Патент USA US2106216код для вставки
Jan. 25„ T938. EA. îM¿10ml-1Ns'oN _ 2,106,216 II‘IONING MACHINE Filed aan. :2a. 21.955 ' kr" o om mmu „WN ‘n B > WENTOQ/ /úer/c/ä 0/7/750” r »CATTOQN 55s Patented Jan. 25, 1938 2,106,216» UNITED STATES PATENT OFFICE 2,106,216 HONING MACHINE Albert M. Johnson, Rockford, Ill., assignor to Barnes Drill Company, Rockford, Ill., a cor poration ^ of Illinois Application January 28, 1'935, Serial No. 3,714 23 Claims. (C1. 51-34) This invention relates to honing machines for producing a Very smooth, true ñnish ony the in ternal cylindrical walls of tubes or cylinders, and has especial reference to an improved machine 5 of this character particularly adapted to operate on the internal surfaces of relatively long tubes disposed in horizontal positions. Referring to the drawings: Figure 1 is a front elevational view of a ma chine embodying the invention. Fig. 1a is a side view of the spring plunger mechanism provided for maintaining the recip- 5 rocation controlling mechanism in proper -posi-- ‘ ' ' 'I'he‘operation of honing the internal cylindri cal surface of a tube or cylinder consists gen erally in simultaneously rotating and reciprocat ing a honing tool within the same. The nature of this work is such that the reciprocating move ment of the tool should be very smooth and with _ a quick and shockless change of direction at each, end of the stroke. Hydraulically actuated means, usually taking the form of a cylinder and piston, have been found to meet these conditions satis factorily in machines designed to operate on rela tively short work pieces. Inthe case of machines for operatingr on very long work pieces such as large gun barrels, however, the use of the usual cylinder and piston reciprocating means is im practical because of the large amount of space it requires. With this in view it is one object of PS bl the invention to provide a honing machine capa ble of operating on work pieces of great length Fig. 2 is a fragmentary longitudinal sectional view of the machine showing parts of the recipro ' cating drive mechanism. . 10 Fig. 3 is a vertical-sectional View taken approxi mately in .the plane of line 3-3 of Fig. land illustrating a. portionof the control mechanism. ` Fig. 4 is a fragmentary sectional view of the spindle carriage supporting means, the view being 15 taken approximately in _the plane of line 4--4 of Fig. 2. I Fig. 5 is a longitudinal sectional View of the tool supporting sleeve and illustrating the tool and a` portion of the spindle in retracted position. 20 Fig. 6 is a view, partly" in section, taken ap proximately in .the plane of line 6_6 of Fig. 2 and illustrating parts of the spindle carriage re-. ciprocating mechanism. Fig. 7 is a, schematic representation of the vari 25 ous electrical and hydraulic circuits and their which embodies a reciprocating drive means hav relationship with the mechanical operating and ing operating characteristics comparable with control means of the machine. ` _ - Generally stated,~ the honing machine as illus those of hydraulic cylinder and piston means but ' trated herein comprises an elongated frame one 30 30 occupying considerably less space. Another object of the invention‘is the provision end of which is provided with a horizontally dis of a novel and efficient means for supporting the posed track or ways upon which a spindle head spindle carriage upon the Ways in a manner or carriage is movably -supported. Smooth,_ shockless reciprocating movement is imparted to which entirely eliminates any possibility of ver (d vl tical movement of the carriage while oiîering a the spindle carriage by means -of cables attached 3,5. Y minimum amount of frictional resistance to its . Another object of the invention is the provision of unitary manual controlling means which per mits of easy and convenient control oi thev various operations of the machine. A further object of the invention 'is the pro vision of readily adjustable bearing or sleeve for supporting the honing tool in retracted position and for effectively guiding the tool into and out vof the work piece. to the carriage and wound in opposite directions on a drum driven through a speed reducing gearl horizontal movement. , . Other objects and advantages will be apparent train by a reversible fluid motor. As a. means of ` ‘ conserving space, the drum is preferablycarried ' in a housing _attached to one end of the frame and, 40 the fluid motor and driving gears are disposed ' at one side of the frame adjacent the housing. The driving cables are disposed within the frame ` and are attached to the underside of the car riage. The latter is effectually supported and guided for horizontal movement by four depend' ing spool shaped rollers. These rollers engage ~ in pairs with the respective members comprising ferred embodiment of the invention illustrated ' the ways and provide for substantially friction from the following detailed description of a pre 50 in the accompanying drawings. It is to be under stood, however, that many changes in form, con struction and arrangement may be made by those skilled in the art without departing from the scope and spirit of the invention as expressed in the appended claims. less horizontal movement of the carriage on the ways. ` At the end of Athe frame opposite the drum is ‘ provided means for supportinga work piece -in operative relation to _a tool and spindle carried _` by the spindle carriage; also'V _a teol_supportin'g 55 v` 2 2,106,216 More specifically described, the machine Vhere 24 maintains the member 21 and its lower bear ing in place on the stud and rovides for the vertical adjustment of the mem er for purposesto be described hereinafter. The nut and lower bearing are enclosed by a cup-shaped cover member 35 bolted or otherwise attached to the lower side of member 21. The upper bearings ~ in disclosed comprises an elongated horizontally of the rollers are protected by oil retaining rings disposed frame consisting of a main bed I and a work supporting bed 2 which is bolted or other wise attached to one end of the main bed. The main bed is constructed in the form of a rec 36 of conventional design.- and guiding sleeve and a coolant directing means. As a further means of conserving space, provi sion is made for accommodating a coolant set tling tank, filter and reservoir or sump Within the portion of the frame devoted to supporting the work. ’ l tangular box-like structure with vertically dis posed side walls 3 and end walls 4. Side walls 15 3 terminate at their upper edges in integrally formed inwardly extending flanges 5 (Fig. 4) ' which serve as protecting shields for certain of the parts and equipmentdocated within the bed. Underlying the flanges of the respective side 20 walls are supported a pair of cylindrical rods 6 extending longitudinally of the bed and forming tracks or ways for a tool spindle head or car riage to be described hereinafter and generally designated by the reference character 1. The 25 rods 6 which are disposed horizontally and paral lel to each other are rigidly secured to the spac ing blocks 8 which, in turn, are firmly bolted or otherwise attached to the walls 3. The spindle carriage 1 (Figs. 1 and 2) com 30 prises generally a horizontally disposed base member 9 with depending flanges I0 along each . side overhanging the sides 3 of the main bed. At one end of the base member is an upwardly projecting housing II within which are enclosed the change speed gears for driving a spindle I2. The spindle I2.is journaled in centrally disposed bearings (not shown) formed on the underside of member 9. The gear housing and rear spindle bearing 4are closed by a removable cover plate I3 40 which provides access thereto for the inspection or lubrication of the enclosed parts. A drive shaft I4 for the gearmechanism extends out wardly through a bearing I5 formed on the housing II and is connected by a coupling I6 with the shaft of an electric motor I1 supported ' on the member 9. Current is supplied to the motor over conductors forming a flexible cable I8 which is connected to the motor through a rigid arm comprising a bushing I9„elbow 20, 50 conduit 2| and outlet box 22. The spindle .carriage is movably supported on the ways by four spool shaped rollers 23 (Figs. 2 and 4) which are carried by depending studs 24 set in the underside of the base member 9. Each roller consists of a hollow, inverted, gen erally cone shaped bearing member 25 having a ` cylindrical depending extension 26 telescoping into the hollow interior portion of a second gen erally cone shaped bearing member 21. The roll 60 ers 23 are supported at their upper and lower ends by conventional anti-friction bearings each comprising a series of steel balls 28. ' The balls comprising the upper bearing are disposed be tween an inner ball race 29 which abuts against 65 a shoulder 39 formed on the stud 24 and an outer ball race 3l which abuts against a shoulder formed on the interior surface of the member 25. The balls comprising the lower bearing are disposed between an inner ball race 32 and an 70 outer ball race 33. The ball- race 32 abuts against a supporting lring 33’ positioned on the stud 24. The outer ball race 33 is provided with an out wardly extending shoulder which overhangs the lower edge of member 21. A lock nut 34 engag 76 ing threads formed on the lower portion of stud ' The bearing structure, above described, sup ports the spindle carriage 1 for horizontal re ciprocating movement on the ways formed by guide members 6.. The weight of the carriage is carried by the members 25 whose downwardly facing inwardly sloping bearing surfaces rest 15 upon the rods 6. Vertical movement of the car riage is prevented by the members 21 whose up wardly facing inwardly sloping bearing surfaces also engage the rods 6. The members 21 are adjusted with respect to members 25 so that a 20 clamping effect is exerted on the guide members. This serves to prevent any vertical movement of the carriage and likewise to center the carriage on the ways. The carriage may be leveled up with respect to the ways by means of shlms 31 disposed between the stud shoulders 30 and the lower surface of the carriage base member 9. The motor I1 - rotates the tool spindle I2 through the medium of the change speed gear mechanism. This mechanism may be of any suitable type providing a selectively variable gear train whereby the spindle can be rotated at any one of a number of diñerent speeds. The spindle is provided at its free end with a socket for holding a honing tool 38 (Fig. 5) with which the honing operation is performed. The honing tool 38 shown in Fig. 5, may be of any desired construction and generally comprises a series of elongated circumferentially spaced honing stones 39 arranged in a suitable retaining head 40 provided with interiorly disposed adjust ing means permitting expansion and contraction of the _stones within a limited range of diameter. To protect the stones from injurious contact with the work piece when the tool is being inserted or 45 removed, the head 49 is also provided with a plurality of circumferentially spaced rigidly se cured ñber guide members 4I disposed intermedi ate the honing stones 39. The honing tool as used in the present construction is provided'with 50 a rearwardly extending tubular shank 42 the free end of which is detachably secured in the spindle socket. Knurled gripping members 43 on the Shank provide means for setting and locking the stone adjusting means through the medium of mechanism (not shown) disposed within the tubular shank. The shank also carries a ser rated ñber supporting ring 44 which serves as a support for the tool in its movement toward and from retracted position, as will be explained here 60 inafter. The honing operation, as hereinbefore ex plained, consists in simultaneously rotating `and reciprocating the honing tool in the work piece. Rotation of the tool is effected by the spindle 65 rotating motor I 1 and gear train above described. The reciprocating motion is imparted to the tool by reciprocating the spindle carriage and tool supporting spindle. It will be appreciated that in honing a horizontally disposed cylinder, uni 70 form, smooth reciprocation of the tool is neces sary to obtain a true surface. Further, th-e change in direction of motion at each end of the stroke must be effected quickly and without shock so that the surface at these points will receive 75 3 2,106,216 substantially the same amount of honing as at intermediate points. To this end a novel and effective carriage driving mechanism in the form of a drum and cable arrangement has -been pro when desired on cylinders having relatively large diameters. The upper face of. the bed 2 com prises a platen which carries a pair of suitable work holding members 80 which are preferably vided. adjustable to accommodate cylinders of different ‘ - The driving mechanism comprises generally a spirally grooved drum 45 (Figs. 2 and 6) mounted in an enclosing housing` 46 and operatively con nected to the spindle carriage. The drum is in 10 tegral with or rigidly supported on a' shaft 41 dis posed transversely of the main bed >| the shaft being suitably journaled in bearings 48 in the ends of the housing 46. A spur gear 49, integral with the drum, meshes with a pinion 50 keyed 15 to a shaft 5l extending .through an outwardly projecting journal member 52 on the housing into a gear box 53. To the gearbox end of the shaft 5| is keyed a worm gear 54 which meshes with a . worm 55 keyed to the drive shaft of a rotary fluid 20 motor 56. . ' The fluid motor 56 may be of any suitable and well known type adapted for quick reversal. The diameters. To permit the most advantageous positioning of the work holders 80 with respect tothe work, -the holders are preferably clamped to the platen by means of bolts extending through longitudinally disposed slots therein. Adjacent the rear end of the bed 2 and at tached to the top face thereof is an upwardly ex tending member 8| formed to receive one end of a cylinder 82 constituting the work piece and to abut against the same in substantially liquid tight contact. A duct 8|a (Figi)l formed within the member 8| provides a passage through which coolant delivered through the conduit 83 is di rected into the cylinder 82. Adjacent the other end of the bed`2 and cen tered on the face thereof is an upwardly extend ing longitudinally disposed U-shaped bracket 84 motor is connected to a pressure fluid pump 5'! I (Fig. 1) having flanges 85 at each end for attach '(Figs. 2 and ‘7) of well known construction ment to the bed. A The upper end of the member 84 25 through a hydraulic circuit in which a stop valve is formed to provide ways 86 (Fig. 5) for a tool 58 and a reversing Vvalve 59, to be described later,y supporting and guide member 81. are~ interposed. The pressure fluid pump is driven 81 ‘comprises generally a base portion 88 formed ' by an electric motor 60 through an over-load re to ride on the ways86 and having a depending portion overhanging the Ways and terminating lease mechanism 6|. Thenñuid motor, pump and 30 driving motor are supported on a sub-base 62 vad The member in teeth constituting a downwardly facing rack i» jacent and. preferably attached to one side of the 89. The member 81 is also provided with up main bed I. A surplus ñuid sump 63 shown in wardly extending clamping members 90 designed _ to hold a tool guiding sleeve 9|. The sleeve is Fig. 7 may be located within the sub-base. The above described drive mechanism serves preferably in the form of a hollow tube having 35 to drive the cable drum 45 in either direction as peripheral shoulders 92 designed to fit in the required and, through its connection with the clamping members. One end of the sleeve is bev eled so` that an inwardly sloping surface is pre spindle carriage, to impart reciprocatory move ments to the latter. Said connection comprises sented to the work piece 82. The sleeve is moved two ñexible cables, 64 and 65, attached to the into abutment with and retracted from the work piece by means of a manually operable crank §23> 40 40 drum so that when the drum rotates in one direc tion, one cable is wound up and the other cable which controls a pinion 94 engaging the rack 09. is payed out. One end of the cable 64 is anchored For locking the sleeve in place, a manually oper tothe drum at 66 and the other end is anchored »ated locking screw 95 is provided. It will be further noted that the work sup' toa lug 61 ‘formed on the underside of the spindle carriage 1 as shown in Fig. 2. One end porting bed 2 provides a housing within which the of cable 65 is anchored to the drum at'68 and the coolant storage and filtering equipment may be other end, after passing over >a sheave 69 is conveniently disposed as shown in. Fig. 1. The anchored to the lug 61 bymeans of a threaded coolant equipment includes a settling tank 96 lto rod 10 provided for the purpose of adjusting the vwhich coolant is returned from the work piece through a screened aperture 91 in the face of the 50 tension of the cable. The sheave 69 is provided with a shaft 1| supported in a bearing formed bed. Coolant is discharged from the tank 96 in one end of a lever 12 which is pivoted at 13 onto .a removable filter 98 which removes dirt or on a bracket 1li-bolted or otherwise attached to other foreign matter and permits the coolant to the end wall of main bed |. Pivotally attached . drain into a reservoir or sump 99. A pump |00, driven by an electric motor |0| draws the coolant to the other end of lever 12 is a vmember-'I5 ex tending substantially horizontally through an aperture in the channel member -16 which is rigidly attached tothe sides of the »main bed.' A compression spring 11 bearing at _one end upon 60 the inner face of member’16 and at the other end upon a retaining ring 18 secured to member 15 by a nut 19, exerts its force on lever 12 tend ing to rotate the lever on its pivot and increase the distance between the sheave- 69 and drum 45. ‘ from the reservoir and delivers it under pressure to the work through the conduit 83 and coolant directing means Sla. ` - Ñ ' Having in mind the' construction of the various working partsof the honing machine above de-scribed, the means for controlling the operations of the machine will now be explained. The vari ous manual control members provided for this purpose are grouped for convenient handling at 'I'his serves to take up any slack in cable 65 and va point near the center or" and on the front of maintains the cable under uniform tension. It also provides a cushioning eiîect which tends to lessen or substantially eliminate any shock in cident to the change in the direction of move 70 ment ofthe spindle carriage. ' Referring now toFig. 1, it will be noted that >thesupporting frame as shown in Fig. 1. These j include a unitary manually operated means for startingv and stopping the' spindle driving motor |1 and the iiuid motor 56. This control means asI shown herein comprises a shaft |02 (Fig. 3)- dis posed transversely of the axis of> the main bed of `the work supporting bed 2 is offset vertically with ' the machine and journaled in spaced bearing respect to the main bed I. This is to provide suff members |03 threaded into opposite ends of a ñcient clearance for the tube or cylinder beingV cylindrical passage through a sleeve member |04. 75 operated on and permits the machine to be used ' The shaft is lield in normal position by opposed 4 2,106,216 compression springs |05 which bear on the inner faces of the respective members |03 and on> spaced collars |06 fast on the shaft. Stop collars inwardly extending lug carried by the depending |01, also fast on the shaft, are adapted to engage |26 carrie-d by the frame of the machine. Recip rocatory movement of the shaft |02 and exten sion member |22 rocks the control member on the pivot |25n thereby causing the arm |26a of Ul the outer faces of the respective membersY |03 and thereby limit the extent of longitudinal motion of the shaft. L ,The sleeve member |04 comprises a cylindrical body portion journaled for rotation in a bearing |08 extending through an aperture in and rigidly attached to wall 3 of the main bed I. The body portion terminates in a flange -|09 providing a shoulder which‘abuts against the outer rim of the bearing. Upon the outer face of the flange |09 is formed an outwardly extending rib ||0 which carries. a bearing stud ||| in a position substan tially perpendicular to the axis of the member |04. The upper portion of the rib4 |||J defines two upwardly facing, arcuate segments centered on the axis of the stud |||. The rearmost seg ment is formed on a slightly longer radius than the forward segment and thus presents a shoulder ||2 which serves as a stop for limiting the move ment of and defining a neutral position for a manual control lever ||3. ' The control lever | I3 (Fig. 3) comprises a base member ||4 having a transversely disposed bear ing member ||5 adapted to receive the bearing stud ||| upon which the lever is enabled to rock in a plane transversely of the longitudinal axis of the machine bed. A depending arm ||6 integral with the member ||4 defines two cam surfaces adapted to engage spaced stop collars | |'| fast on the shaft |02. Carried on the upwardly facing end of the member ||4 and offset slightly there from is a tubular extension member | I8 and a grip member ||9. Within these members is dis posed a stop pin |20 normally held in engagement with the arcuate segments by a compression spring |2|. Manipulation of the grip member | I9 relieves the spring tension thus withdrawing the pin |20 and permitting the movement of the control lever past the neutral point defined by the shoulder ||2. Thus, when the pin has been 45 withdrawn from its _stop position, the lever ||3 arm of the control member. The control mem ber is pivotally supported at |25a on a bracket the control member to engage one or the other of the ’switch operating push buttons |21 and' |28. When the shaft | 02 is shifted- to the left as viewed in Fig. 3, the arm |26a will engage the “start” push button |21. Shifting the shaft |02 to the right brings the arm |26 into engage ment with -the “stop” push button |28. These push buttons control circuits for the spindle motor 15 I7 as shown diagrammatically in Fig. 7 and ae-‘ cordingly, the motor may be started by moving lever | I3 toward the machine and may be stopped ' by moving the lever away from the machine. As a means of guar-ding against the accidental start 20 ing of the motor, the shoulder || 2 prevents the movement of the lever past the neutral positiony without first releasing the stop pin. The second controlling function of the control' mechanism above described is that of starting and stopping the fluid motor 56. This is accom-, plished through the medium of a link mecha nism shown in Figs. 2, 3, and '7 which is actuated by the rotation of the sleeve member |04 when the lever ||3 is rocked in a plane parallel with the longitudinal axis of the machine. This mech anism as shown comprises a link member |29 (Fig. 2) pivotally attached at one end by a pin |30 to an upwardly extending arm |3| integrally formed with a split collar |32 clamped on the sleeve |04. The link is disposed within the main bed | of the machine and its other end is piv otally attached to one arm of a bell crank lever |33. The lever |33 is pivotally supported to turn on a vertical axis on a transverse member |34 rigi-dly supported on the sides of frame I, and the other arm of the lever is attached to a transversely disposed link |35 (Fig. 7) which actuates the valve 58. The valve 58 which is preferably supported in a housing |36 carried on the-frame of the pump 5l consists generally of a cylinder |3'! within which a piston |38 recipro cates under control of the mechanism previously described. Pressure fluid is delivered by the pump 5l to the -valvethrough a duct |39 having 50 may be moved toward the right as viewed in Fig. 3, thereby causing the arm | I6 to move shaft |02 to the left against the force o'f the left hand spring |05. Movement of .the lever in the op 50 posite direction 4results in the movement of the shaft |02 to the right, the limit of movement in . two branches terminating in ports at each end either direction being governed by the position of the valve. A duct |40 connects the stop valve ing of the stop collars |01. Moreover, lever 58 with the reversing valve 59 and a duct |4| movement in either direction results in the com connects the valve with a return duct |42 leading 55 pression of one or the other of the springs |05 to the sump 63. which tends to maintain the shaft |02 in a posi To start the fluid motor and, incidentally, the tion corresponding to the neutral position of the lever ||3. Accordingly, the lever is automati cally returned to neutral position after each op 60 eration as soon as the operator releases the same. ' The actuation of the control lever ||3 as above described reciprocates the shaft |02 and thereby effects the starting and stopping of _the spindle driving motor I1. This shaft |02 is operatively 65 attached to an extension member |22 journaled , in a bearing |23 which extends through an aper ture in and is rigidly attached to the rear wall 3 of the main bed |. The other end of the ex tension member |22 is operatively connected with 70 a switch controlling member |25 adapted to actu ate switch operatingàpush buttons. In the pres ent instance, the operative connection between the extension member |22`and the member |25 is provided by a peripheral groove |24 in one end of the extension member which engages with reciprocation `of the spindle carriage, control lever ||3 is rocked in a counter-clockwise direc tion as viewed in Fig. l. Arm |_3| follows this movement and shifts link |29 to the left (Fig. 2) and the link, through the medium of the bell vcrank |33 and link' |35, effects the movement of the piston |38 (Fig. 7) toa position in which the ports for the lower branch of fluid pressure duct |39 and the discharge duct |4| are closed. Pres sure fluid is accordingly delivered through the duct |40 to reversing valve 59 and thence to the fluid motor. When lever ||3 is rockedl in a clockwise direction, the motion of the link mechanism is reversed'and piston |38 is shifted to a position in 'which it covers the portsA for the upper branch of duct |39 and for duct |40. Pressure fluid is thereby delivered through the lower branch of duct |39 and ducts |4| and |42 75 5 2,106,216 to the sump 63 and the operation of the motor 56 is stopped. ` 'I’he two positions of the control lever are de fined by a yieldable detent device provided on the sleeve |04. 'I'his mechanism as shown herein comprises-a ball |43 which together with a com pression spring |44 is disposed within a recep tacle formed in an outwardly extending projec tion |45 on the flange |09. The spring urges 10 the ball into depressions |46 provided in the shoulder of the bearing member |08 at the points corresponding to the start and stop position of the lever. This arrangement facilitates the cor rect positioning of the lever. . ' Additional manual‘control elements provided include a start-stop push button switch |41 (Figs. l and 7) for controlling the operation of the pump motor 60. This switch is located on the side of the main bed | adjacent the control lever 20 ||3. Also included is a manual control of the reciprocating movement of the spindle carriage, provided by a lever |48 pivotally mounted on the side of the work supporting bed 2 and connected by a link and removable pin with a stop bar 25 |49 to be described later. Further control of spindle carriage reciprocation is provided by a lever |50 also attached to the stop bar |49 and adapted to rotate the same for purposes to be described hereinafter. ‘ 30 While the reciprocating movement of the spin dle carriage may be controlled manually as above the movement of the spindle carriage will again be reversed. The function of the pawl stop is to define the limit of the stroke toward the re tracted position of the tool, and, once the ma chine is started, the carriage will be reciprocated within the limits defined by this stop and mem ber |51. - ~ When the honing tool -is to be withdrawn from the work, the manually operated control lever |50 is pulled forward, thereby rotating the 10 stop bar .and moving the pawl stop |59 out of the path of lug |60. The carriage will then be moved back to its retracted position with the tool entirely withdrawn from the work and resting in the supporting sleeve 81. 'I'he release of the 15 lever |50 will permit the stop bar and pawl stop » - to bc moved back into their normahpositions. under the influence of spring operated plungers |6| which bear against the ends of a cross mem ber |6|~1 fast on~ the stop bar |49 as shown' in 20 Fig. 1a. ' ’ It will be noted also, that the manual control levèr |48 is adapted for connection to the stop bar by means of a link |48EL and pin |48b. This connection is required only when a new work piece is being set up in the machine and enables the operator to manually control the extent of tool movement during the setting up process. During the operating period of the machine, the pin |48h may be withdrawn so that the lever |48 30 will not be required to follow the movements of the Stop bal’. stated; it is normally controlled automatically. The operation of the reversing valve 59 under, The mechanism provided for this purpose in the control of the stop bar will be most readily seen present instance is generally similar to that dis 35 closed in `United States Patent No. 1,945,044, by referring to Fig. 7 of the drawings. The valve 35 granted January 30, 1934, to A. M. Johnson and- operating link |52 is provided with two piston enlargements |62 and |63' forireciproca'tion in the W. M. Fairbairn and comprises a cam plate |5| valve cylinder. With the stop bar shifted to the (Fig. ’1) and `link |52 for actuating the revers ing valve 59. The cam plate is disposed in a left, as shown, the pistons |62 and |63 will de ñne an annular chamber connecting the pressure 40 housing |53 supported on a bracket |54 at tached to the main bed | '(Fig. 1). The link ' fluid duct |40 with a duct |64 leading to» one side extends from the cam plate to the valve 59 which of the motor 56. At the same time, the upper surface of the piston |63 will deflnea cylindri is preferably enclosed in the housing |36 sup cal chamber connecting a duct |65 leading from ported on the frame of the pump 51. The cam 45 plate is actuated by the stop bar |49 which is ' the other side of the motor with a discharge duct supported on'the frame :Dy bearing members |55 |65a which is lconnected to the main discharge and |56, the latter of which is adjustable. The duct |42. Pressure iluid supplied to the motor stop bar is providedwith a front stop member through the hydraulic circuit l‘íbove described |51, a rear stop member |58 and a pawl stop will cause the motor lto rotate its shaft in the direction required to drive the spindle carriage 50 member |59, each of which is adjustable with 50 _ respect to its position on the bar. 'I‘he front and to retracted position. As the spindle carriage approaches retracted rear stop members are preferably in the form of disk shaped collars and are adapted to» engage position, the lug |60 will engage the stop mem a lug |60 depending from the spindle carriage 1. ber |59 therebyl forcing the stop bar and cam The pawl stop is designed to operatively engage plate to the right. Link |52, accordingly, will shift and position the pistons |62 and |63 so that the lug |60 only when contact is made there with by the spindle carriage moving toward the duct |65 will be connected with pressure duct |40 retracted positions. ' K and duct |64 will be connected with discharge With the spindle carriage in the retracted po duct I 42. This will cause motor 56 to rotate its 60 sition shown in Fig. 1 of the drawings, the stop shaft so as to drive the spindle carriage in the 60 " « ' bar |49 will be in its extreme right position opposite direction. and the reversing valve will be set Iso that the 'I'he spindle carriage of the machine disclosed cable drum will be rotated in the proper direc tion for moving the spindle carriage toward the work. As the carriage moves, lug |60 will pass over the pawl stop without effect and, on reach ing a position defined as one limit of the stroke by the member |51,’will engage that member and force the stop bar to the left. In this position of the stop bar, the reversinggvalve will be actuated to reverse the direction of rotation ofthe cable drum with a consequent reversal of direction of motion of the~ spindle carriage. When the lug |60 now engages the pawl stop, the stop bar will be forced to the right and the direction of herein is required to operate through a relatively long stroke in operating on long cylinders. Since the spindle driving motor is mounted on the car 65 riage, it too will reciprocate which makes it nec essary to provide a very flexible and durable connection over which to supply electric current to the motor. 'I'his connection takes the form, in the present instance, of the flexible cable |8 -adapted to be wound up _on the drum 45 adjacent the cable 64 as the spindle carriage is moved to ward the retracted position. The cable I8 is anchored to the drum as atl |66 ‘and the three conductors enclosed therein are respectively con- 75- 6 2,106,216 contact fluid motor which thereupon rotates the cable rings |61 (Figs. 2 and 6). The rings are sup ported coaxially of the drum by an insulating plate |68 (Fig. 6) rigidly attached at one end of the drum. A set of brushes |69 engaging the rings provide electrical contact with the con drum in a direction to move the spindle carriage toward the work. As the tool enters the work, the lug |60 on the spindle carriage passes over the pawl stop |59 which then becomes effective to limit the rearward movement of the spindle carriage. The tool is advanced into the work until the lug |60 on the spindle carriage engages nected with concentrically disposed ductors of a feed cable |10 which terminates at the switching contacts to be described herein , the front stop member |51 and shifts the stop after. The electrical circuits of the spindle motor |1, rod |49 to the left. The stop rod, through the 10 10 coolant pump motor |0I and pressure ñuid pump medium of the cam plate |51 actuates the re motor 60 are shown schematically in Fig. 7 of versing valve 59 as hereinbefore described, there the drawings. The spindle motor |1 and coolant by reversing the direction of the fluid motor 56. pump motor |0| are connected in multiple, and The fluid motor, accordingly, rotates the cable drum in a directionto move the spindle car 15 the individual conductors extending thereto are connected to respective terminals of the switch riage away from the work. The limit of return | 1|. The conductors |12 of the incoming power movement of the carriage is now defined by the line are connected by branch conductors |13 paw] stop |59 which is engaged by the lug |69 with corresponding terminals of the switch. A on the spindle carriage before the tool 38 is with drawn from the work. The stop bar is thereby 20 20 solenoid |14 provided with a series of switch shifted to the right and actuates the reversing closing members |15 connects the respective con ductors when the solenoid is energized. The valve in the manner hereinbefore described to solenoid is further provided with a switch closing again effect the movement of the tool into the member |16 for completing a locking circuit for work. Since the spindle motor |1 is rotating the itself. The circuit of the solenoid includes a spindle, the tool is, accordingly, reciprocated 25 normally open switch- |11 closed by a contact and rotated within the tube being worked upon. member actuated by the push button |21. This The_honing stones carried by the tool are thus . enabled to produce a smooth true surface on the circuit also includes a normally closed switch |18 l closed by a contact member actuated by push interior of the tube. When the honing operation is finished, the 30 button |28. attendant will cause the honing tool to be with Referring backl to the description of the man ual control mechanism, it will be recalled that the drawn from the work by‘pulling the lever |50 'inward and outward movement of the control forward to move the pawl stop |59 out of the lever ||3 effected the operation of push buttons path of the lug |50 on the spindle carriage. The spindle carriage will accordingly return to its 35 |21 and |28, respectively. The actuation of the push button |21 results in the closure through retracted position and, when it has reached this position, the attendant will stop further recip s'wítch |11 of an energizing circuit for the sole noid |14 which thereupon closes the switches |15 rocating movement by rotating lever ||3 in a to connect motors |1 and | 0| to the power- line clockwise direction. The actuation of the lever ||3 in this manner eiTects the operation of the 40 40 and switch |16 to complete the solenoid locking stop valve 58 which stops the fluid motor 56 and, circuit. The actuation of button |28 opens the incidentally, the carriage driving cable drum. switch |18 to interrupt the solenoid locking cir cuit and the solenoid becomes deenergized and ~The spindle and coolant pump motors may be opens switches |15 and |16. The motors are thus ' stopped at this time by pulling lever ||3 forward 45 stlarted and stopped under control of the lever | 3. ` - The oil pump motor 60 is connected with branch conductors |19 leading to the power line |12 by switches |80 operated under control of a 50 solenoid |8|. This solenoid is provided with a circuit similar to that above described for sole noid 114. The circuit is initially closed by a push button operated start switch |82 and the sole noid locks over a circuit including its own switch |83. The solenoid is deenergized and the pump motor stopped incident to the opening of push button operated stop switch |84. In operating the machine herein described, the thereby operating the stop push button |28 which 45 controls the motor circuits. Scratching or otherwise marring the work as the tool is re tracted therefrom is prevented by the tool guid ing sleeve 9| which maintains the tool in proper alinement with the work. The fiber supporting 50 ring 44, which ñts snugly into the sleeve 9| sup ports the weight of the tool and serves as a guide for the same until the tool is Withdrawn suf ñciently so that the fiber members 4| engage the wall of the sleeve and take over the support and 55 guidance of the tool. It will be apparent from the foregoing that the present invention provides a novel arrangement of mechanisms constituting an improved honing cylinder or tube 82 to be operated on is placed in the work holders and adjusted to the proper -machine of minimum dimensions consistentwith position with respect to the tool 38. The tool -the character of the tubes or cylinders to be supporting sleeve 9| is then moved into tight worked on, which is smooth and shockless in op abutment with the work and is clamped in this eration, is easily and conveniently controlled, position by means >of the clamp screw 95. ' After 65 the stop members |51, |58 and |59 have been ap propriately positioned on the stop bar, the pres sure fluid pump motor 60 is started by the actuation of the start push` button |82. The spindle drive motor |1 and coolant pump motor |0| are then started by momentarily pushing the manual control lever | I3 forward, that is, toward the machine to actuate the push button |21. At the same time, the lever | I3 may be rotated in a counter-clockwise direction thereby operating the 75 piston valve |38 to direct pressure fluid to the co and which is efficient in use. I claim as my invention: l. A honing machine comprising, in combina tion, an elongated horizontally disposed frame, a carriage mounted on one end of the frame for relative movement longitudinally thereof, a spin dle rotatably supported on the carriage, work holding means supported on the other end of said frame for holding the Work coaxially with the spindle, a honing tool attached to said spindle and adapted to enter the work, a drum supported at said one end of the frame, a sheave supported 65 2,106,216 at a point intermediate the two ends of the ~frame, a cable anchored at one end to said drum and at the other end to said carriage and run-_ ning over said sheave, a second cable anchored Ul at one end to said drum and at the other end to said carriage, said second cable being wound on the drum«in such manner that it is paid out when said ñrst mentioned cable is being wound on the drum, and means ~for rotating said drum. 10 2. A honing machine comprising, in combina tion, a horizontally disposed frame, work sup porting means on one end of the frame, a spindle supporting carriage mounted on the other end of the frame for movement longitudinally there of, a cable drum supported at one end of the frame, a cable passing over said drum and-at tached. to said carriage, means for rotating said drum to alternately reel up and pay out said cable to reciprocate said carriage on said frame, and 20 yieldable means operatively associated with said cable for absorbing the shock incidental to the ,reversal of the direction of carriage movement. 3. A honing machine comprising, in combina ' 7~ a lever pivotally supported intermediate the ends of the bed, a sheave supported on one arm of said lever, a spring member attached to the other arm of the lever and adapted to exert a force tending to move said one arm of the lever Gl and said sheave farther from said drum,v and a second cable adjustably attached tothe car riage, passing over said sheave and adapted to be wound on said drum incident to its rotation in a counter-clockwise direction to move 'the 10 carriage toward said sheave. ` 7 _ A mechanism for reciprocating the tool sup porting carriage on the bed of a honing machine comprising, in combination, cables attached to the carriage, a drum adapted to alternately Wind up 15 one ofthe cables and unwind the other of the cables, a reversible rotary' ñuid motor drivingly ' connected to said drum, a pressure fluid pump for supplying pressure fluid to said motor, a valve interposed between said pump and said motor for 20 regulating the delivery of pressure fluid to the motor to control its direction of rotation, andA carriage actuated means for controlling said tion, a frame, Work holding means on one ‘end 25 of said frame, a spindle supporting carriagev 8. A honing machine comprising, in combina mounted on the other end of said frame, a cable tion, an‘ elongated frame, av carriage mounted drum supported _at said other 'en_d of the frame, cn said frame for relative movement longitudinal a sheave supported intermediate the ends of the ly thereof. a spindle journaled on said carriage frame, a cable connected to said carriage and and movable therewith, a motor supported on said 30 passing over said sheave and said drum, a sec carriage and having a driving connection with valve. _ ` ' ond cable connected to said carriage and passing over said drum, said cables being alternately wound up and paidout incidental to the drum ro supporting a piece of work to be operated on, a tating in one direction or the other to reciprocate supporting means and having a shank secured to 35 the spindle carriage, and a fluid motor for ro tating said drum in either direction. ' ‘ 4. A honing machine comprising, 1n combina tion, a frame, a carriage mounted on the frame for relative movement longitudinally thereof, a 40 spindle journaled on the carriage and movable therewith, means at one end of the frame for supporting a tube to be worked on concentrically honing tool adapted to enter the Work on said said spindle, means for reciprocating the carriage including a cable drumÍ rotated alternately in clockwise and counter-clockwise directions, a cur rent supplying cable comprising electrical con ductors connected to said motor and adapted to be wound on the cable drum incident to its‘ro 40 tating in the direction-for moving the carriage of the axis of the spindle, a honing tool adapted toward the drum, a plurality of annular members terminating the conductors of said cable and sup to enter the tube and having a shank secured 45 to said spindle, means for rotating the-spindle, ported on one cnd‘of the drum concentrically with the axis of the drum, and means for connect and means for reciprocating the spindle includ ing a cable, a drum for alternately reeling up and payingV out the cable, a yieldably supported sheave for taking up the slack in the cable, and 50 means for alternately rotating said drum in op posite directions. 30 said spindle, means at one end of the frame for ing said conductors with a source of current in cluding a plurality of stationarily supported brushes engaging said annular members. . -9. In a honing machine, the combination of a reciprocating carriage, a tool supporting spindle rotatably mountedon'said carriage, means for 5. A mechanism for reciprocating the tool sup- ' supporting work in position for operation thereon porting carriage >of a machine tool comprising,_ in combination, a _cable drum, a motor for driv 55 ing said drum in clockwise or counter-clockwise directions, va cable attached to the carriage and adapted to be wound on the drum incident to its rotation in a clockwise direction and to move the by the tool, atool supporting and guiding mem ber having an opening adapted to receive the tool, means providing-ways for supportingsaid guiding member, means 'for moving said member toward and from said work including a manually rotatable pinion journaled on said ways anda rack formed carriage >toward said drum, a yieldably supported Y' on the member, and manually operable means on said member for preventing movement thereof. 60 60 sheave having its axis paralleliwith. the axis of said drum and spaced'therefrom, and a second l0. In a honing machine, the combination of a - l 'cable attached to the carriage-and passing over reciprocating carriage, a tool supporting spindle said sheave ~to said drum and adapted to be rotatably mounted on said carriage and movable therewith, means for supporting. work in position for operation thereon bythe tool,»a member hav ,wound on the drum incident to its rotation in a 65 counter-clockwise direction to move the carriage away from the drum. ' ing an opening >adapted to receive and support the 6. A mechanism for reciprocating a tool sup ' tool adjacent‘the work and to guide the same into porting v,carriage on the bed of a machine tool the work, means supporting sa-id member for comprising, in combination, a cable drum sup 70 ported on one end of the' bed, a fluid motor for rotating said drum alternately vin clockwise 'and counter-clockwise direction, a cable attached to the carriage and aiiapted to be wound on the _ drum incident to- its rotation in a clockwise di 75 rection to move the carriage toward said drum, movement longitudinally of said spindle, means for moving said' member into abutment withy the 70 work including the pinion journaledin said sup- ' porting means and a rack carried by the member, and means for locking said member in position to prevent its movement away from the work. .11. In a honing machine, the combination of a 75 8 2,106,216 bed, a carriage mounted on the bed for move ment longitudinally thereof, a motor for recipro cating said carriage, a tool supporting spindle journaled on said carriage and movable therewith, a motor for rotating said spindle, a manual con trol lever supported on said bed for movement in two planes relative to the axis of the bed, means actuated responsive to the movement of said lever through an arc in a plane parallel to the axis of the bed for controlling the operation of said car riage reciprocating motor, and means actuated in response to the movement of said lever through an arc in a plane perpendicular to the axis of of the sleeve incident to the movement of the lever in a plane transversely of the axis of _the sleeve, and an arm projecting downwardly from said lever between the spaced collars on the outer end of the shaft, operative responsive to the movement of the lever on its supporting bearing for reciprocating the shaft in opposition to the force exerted by said spring members. 16. In a honing machine, in combination, a frame, a tool spindle carriage movably supported 10 on said frame, and means for rapidly reciprocat ing said carriage with substantially instantane ous, shockless reversal at each end of its stroke, the bed for controlling said spindle rotating motor. said means comprising a rotary fluid motor, a l2. In a honing machine, the combination of a frame, a carriage mounted on said frame for re quick reverse valve mechanism controlling the operation of the motor, a cable drum driven by the motor, a flexible cable connecting the drum ciprocating movement thereon, a rotatable tool supporting spindle journaled on said carriage, a manual control lever supported on said frame for movement in two intersecting planes, means actu ated in response to the movement of said lever through an arc in one plane for controlling the rotation of said tool supporting spindle, and means actuated in response to the movement of said lever through an arc in the _other plane for controlling the reciprocation of said carriage. 13. A manual controlling mechanism for a ma chine tool comprising, in combination, a sleeve rotatably mounted on the frame of the tool, a shaft extending through said sleeve transversely of the frame, means in said sleeve tending to maintain said shaft in an intermediate position in the sleeve, a lever supported on said sleeve for movement in a plane perpendicular to the aids of the sleeve to rotate the sleeve and for movement in a plane parallel to the axis of the sleeve to reciprocate said shaft against the ac tion of said maintaining means, and machine controlling means actuated in response to the 40 movements of said sleeve and said shaft. 14. A manual controlling mechanism for a machine tool comprising, in combination, a sleeve rotatably supported on the frame of the tool, a and the carriage, and means controlled by the carriage for operating said valve mechanism. 1'7. In a honing machine, in combination, a 20 frame, ways carried by the frame, a tool spindle carriage supported for reciprocation on said Ways, and means for rapidly reciprocating said car riage on said ways with substantially instan taneous, shockless reversal at the end of each of 25 its strokes, said means comprising a ñuid motor, a pressure fluid pump, and an electric motor for driving the pump, _a quick reverse valve mecha nism interposed between the pump and the fluid motor for controlling the direction of rotation of 30 the motor, a rotary element driven alternately in opposite directions by the fluid motor, flexible driving means operatively connecting said ele ment with the spindle carriage, and means con trolled by the spindle carriage for actuating said valve mechanism. l 18. In a honing machine, in combination, a reciprocating carriage, a spindle journaled at one end on said carriage and carrying a honing tool at its other end, means for supporting work to be operated on by said tool, means for recip rocating said carriage to advance the tool into operative engagement with the work and to with shaft extending through said sleeve and sup draw the tool from the work, and means for ported for reciprocation therein, a manual con trol'lever mounted on said sleeve for rotating the supporting the tool in withdrawn position and for guiding the tool into the work, said tool sup porting means including an elongated member disposed substantially parallel to the axis of the tool spindle adjacent the tool supporting end sleeve and reciprocating said shaft, and machine controlling means_independently actuated by said sleeve and said shaft incidental to the rotation and reciprocation thereof, respectively, said con trolling means including a first electrical switch actuated in response to the movement of the shaft in one direction, a second electrical switch actuated lin response to the movement of the shaft in the other direction and valve mecha nism actuated in response to the rotation of said sleeve. l5. A manual control mechanism for a ma chine tool comprising, in combination, a tubular sleeve rotatably supported on the frame of the machine. an outwardly extending projection on one end of said sleeve, a collar having an up wardly extending arm rigidly clamped on the other end of the Sleeve, a valve controlling link pivoted on said. arm, a shaft extending through the sleeve and having opposed spring members engaging spaced collars on the sleeve for posi tioning thev shaft transversely with respect to the sleeve, spaced collars fast on the outer endof said shaft, a switch controlling member engaged by 'Itheother end of said shaft, a manual con trol lever supported on a bearing carried by said projection on the sleeve, said bearing being dis posed eccentrically with respect to the axis of the sleeve to provide leverage for the rotation thereof, means supporting said member for end- a wise movement relative to the spindle, manually operable means for moving said member in either ' direction to adjustA its position relative to the work, and means-for locking the member in ad- ' justed position. A 'n Ll 19. In a machine for dressing cylindrical sur faces, in combination, a frame, a cylindrical abra sive tool, a support on said frame for said tool, a support on said_frame for work to be operated on by said tool, a cable drum supported at one- l‘ end of the frame, a sheave >supported on said frame at a point spaced substantially from said one end thereof, a cable connected to one of said supports and passing over `said sheave and said drum, a second cable connected to said one sup port and passing over said drum, said cables be ing alternately wound up and paid out incidental `to the drum rotating in one direction or the f’ other to reciprocate said one'Y support relative to ,_ the other sup-port, and a fluid motor for rotating said drum in either direction. 20. In a machine for dressing cylindrical sur faces, in combination, a cylindrical abrasive tool, a support on said frame for said tool, a support on said frame for, work to be operated on‘by said 75 2,106,216 9 tool, and means for reciprocating one of said sup ports relative to the other support with substan tially shockless reversal at each end of its stroke, said means comprising a rotary fluid motor, a quick reverse valve mechanism controlling the operation of the motor, a cable drum driven by the motor, a ilexiblecable connecting the drum and the reciprocating support, and means con eating support and extending to said drum, said cables being pulled alternately in opposite direc the reciprocating support for controlling said tions for winding up and paying out said cable tions in response to the rotations of said drum, and means included in said mechanism for cush ioning the shock incident to the reversal of the direction of rotatio-nof said drum. 23. In a honing machine, the combination of an elongated frame, a carriage mounted on said trolled by the reciprocating support for operating- frame for movement longitudinally thereof, a 10 said valve mechanism. ' _ spindle journaled at one end on said carriage and 10 21. A mechanism for effecting relative recipro movable therewith, a honing tool secured to the catory movement between the Work support and other end of said spindle, supporting means for the tool support of a machine for dressing cy holding work to be operated on by said tool, lindrical surfaces comprising, in combination, ca 15 bles attached to one of said supports, a drum means for reciprocating said carriage to traverse the tool across the Work, a spindle driving motor k15 adapted to alternately wind up one of the cables on. said carriage for rotating the spindle and tool and unwind the other cable, a reversible rotary to cause the tool to operate on the work, and ñuid motor drivingly connected to said drum, a means `for supplying operating -current to said pressure iluid pump for supplying pressure iluid 20 to said motor, a valve interposed between said motor while said carriage is reciprocating _com prising a current supply cable including a plu 20 pump and said motor for regulating the delivery rality of electrical conductors connected to said of pressure ñuid to the motor to control its direc motor, a cable drum supported at one end of said tion of rotation, and control means actuated by . frame adapted to be rotated in opposite direc 25 valve. ' 22. The combination in a machine tool having a Work support and a tool support, of means for reciprocating one of said supports relative to the other support with substantially instantaneous, to maintain the cable taut while the carriage is 25 reciprocating, a plurality of contact members,- one ' for each conductor of said cable, said contact members being supported at one end of said drum l .30 shockless reversal at the end of each stroke com- ' for rotation therewith, and means for connecting said contact members with a source of current 30 prising, a cable drum, driving means including including a plurality of stationarily supported ^ quick reversing means _for rotating said drum ñrst in one direction and then in the other. direction, cables connected to opposite sides of the recipro contact engaging elements adapted to engage the respective contact members. ALBERT M. JOHNSON.