Патент USA US2111288код для вставки
., " 2,111,288; March 175, ,1938.1 , _ MILLING MÁGHINE‘~ l» Filed Nov. 22, 19,35 ' ~ ` y ' '-4 sheets-Sheet 1 limi 2€. ATTORNEY. " l March 15, 1938. ` H„~H¢R|__ACHER MILLING MACHINE -Filed NOV. 22, 1935 :g1-¿QJ - 6 2,111,288 I 4 Sheets-Sheet 3 /ff ATTORNEY. March 115,- 1938. 2,111,288 ' H; HoRLÁcHIi-:R MILLING MACHINE "Filed Nov. 22, 1955 4 Sheets-Sheet 4 . .fl Èä.È , B. Y ATTORNEY. 2,111,288 Patented' Mar. 15, 1938 UNITED STATES VPMI-:NT "oi-‘Fics MILLING Herman Hoi-lacher, lCincinnati, Ohio, assignor to The Cincinnati Milling Machine Co., Cincin nati, Ohio, a corporation of Ohio Application November 22, 1935, Serial No. 51,124 7 Claims. (Cl. 90--21.5) , This invention relates to machine tools and -up with the ordinary and conventional types of milling machines. more particularly to an improved form of mill The machine of this invention has been so ing machine. One of the objects of this invention is to pro 5 vide a machine ‘tool in which cutting paths in angularly related planes may be obtained ‘and without changingl the setup of a Work piece. Another object of this invention is to provide a machine tool in which rcutting paths may be' . .l O generated in angularly related planes, and mech anism for preventing generation of more than one y cutting path at a time. A further object of this invention is to pro _ vide a machine tool for generating. cutting paths ' A‘lying in different planes. ' ' Other objects and advantages of the present invention should be readily apparent hy reference to the following specification, considered in con“ junction with the accompanying drawings form 0 ing a part thereof and it is to be understood that any modiiications may be made in the exact structural details there shown and descriloed,` within the scope of the appended claims, without departing from or exceeding the -spirit of the invention. ~ Referring to the drawings in which like refer» contrived that a number of surfaces not sus ceptible of being machined in a single operation on conventional machines may be machined in a single setup of the work piece. Such a machine is illustrated in Figures 1 and 3 of the draw ings and comprises a large rectangular base por tion iii upon which is formed suitable guide: 10 ways it for receiving and supporting a Work receiving table it. Mounted on another portion of the bed it is an upstanding structure I3 in which is journaled a pair of cutter spindles I4 and it. The structure it has a guideway i6 formed on the top thereof in which is slidably mounted a spindle carrier i‘i having a cutter spindle it rotatably journaled in the end thereof. Power operable means are provided for re ciprocating the table it transversely of the cut ter spindles it .and it whereby a cutting path may he generated parallel to the direction of movement of the table; and additional power operable means have been provided for moving the spindle carrier i'i along a path angularly re 25 lated to the path of movement of the table where ` by a cutting path may be generated when the ence numerals indicate liire or similar parts: table is >held stationary whichhas a direction Figure l is a front elevation of a machine tool which is angularly related to the direction of embodying the principles of this invention. '30 Figure 2 is a sectional view showing the power transmission to the vertical spindle of the ina chine. Figure V3 is a plan view >of the machine shown in Figure 1. _ Figure i is a sectional view 'showing the power transmission to the horizontal cutter spindles. Figure 5 is a detail view in elevation ci the trip mechanism associated with the movable cut ter spindle carrier. _ Figure 6 is a planview of a portion oi the mechanism shown in Figure 5, as viewed on the `line t-t oi that figure. \ Figure 7 is a plan view of the trip mechanism mounted on the rear side of the work table. Figure 8 is ‘a detail section on the line t-»t of Figure l. ‘ . .. - table movement. - 30 Separate power operable means have been pro vided for rotating the vertical spindle and the horizontal spindles and these means are illus trated in Figures 2 and t respectively of the drawings. The power transmission for rotat 35 ing the vertical spindle is shown in Figure 2 and is self-contained and movable with the carrier ill. This transmission includes a prime mover, such as the electric motor it, which is connected through a chain drive ‘it for rotation of shaft 2 i. 4:0 This shait has a bevel pinion 22 which ínter meshes with a large bevel gear ‘it which is jour naled in anti-'friction hearings 2t and which has a splined connection with the spindle i8. The spindle4 It is anti-frictionally journaled in a d5 >quill mi which is vertically adjusted in the car Figure 9 is a detail view as taken on the line ii-ii rier il whereby the plane of rotation of the cut ter 2li attached to the spindle may he variably Figure 10 is a detail view taken on the linev determined. it-it of Figure l. The quill adjusting mechanism may be of a 50 Figure 1l is a view in elevation as taken on conventional type comprising a manually rotat the line ii-ii of Figure 10. ‘ able shaft 2l which is connected through bevel Figure l2 is a. diagrammatic view of the trans- . gearing 28 to a worm Wheel it, íntermeshing with mission and control mechanism for the machine. suitably formed teeth iii) cut in the periphery of In milling large castings there is usually a number of plain surfaces to be finished or ma-n the quill 25. There has thus been provided a chined, but dueto the size of the casting the carrier which is movable in an angular‘relation with respect to the table and which has self surfaces are widely separated and lie in ldif of Figure 8. ferent planes which prevents the possibility oi 60. milling more than one surface‘in a single seti» contained therein a power transmission for ro tating a. Yelftlcal spindle which is axially adjust 2,111,258 able in accordance with the height of the surface - tion. Thus, no-fluid will be delivered to the cyl to be finished. Thehorizontal cutter spindles I4 and I5, shown in Figure 4, are driven from a second prime mover, such as the motor 5| which is mounted upon the top of the structure i3 connected by a chain and sprocket drive 32 for rotation of a common drive shaft 33. This. shaft carries a pinion 34 which rotates spur gear 35 for rotation 10 of cutter spindle I5; and drives spur gear 35 for rotation of spindle I4, the spur gear 35 inter meshing with gear 31 .which has a spline- con nection with spindle |4. . The cutter spindle |4 is anti-frictionally jour 15 naled at one end in an adjustable quill 35 where inder 55, but will be delivered to the cylinder 53. In the latter case, the port 53 of valve 55, which`is connected by channel 54 to the feed port 55 of cylinder 53, is connected by a can nelure 55 in plunger 52 to port 51. The variable delivery feed pump 55 has a delivery line 55 connected to port 51 and a return line 55 which is connected to port 15. The port 15 is con nected by a cannelure 1| to port 12 of valve 55 10 and this port is ~connected by channel 13 to the other end of cylinder 53. Thus, .the fluid from the variable delivery pump 55 is delivered to one end of cylinder 55 and the fluid escaping from the other end of the cylinder is returned 15 may be variably located in accordance with the to 'the intake of the variable delivery pump. In order to care for any leakage of oil from the position of the surface to be finished. A mech anism indicated generally by the reference nu system and to insure a constant pressure, a low volume high pressure booster pump 51 is super meral 45 may be utilised for adjusting the quill charged by the rapid traverse pump 55 through channel 14 and the delivery port of the pump is connected by channel 15 to channel 55 which is the delivery line of the variable feed pump. It will be noted that the port 51 is in the form by a cutter 35 attached to theend of the spindle and this mechanism may be the same as that described in connection with the quill adjusting mechanism shown in Figure 2. The cutter spindle I5 is eccentrically Journaled in a quill 4| and‘has an internal gear 42 keyed . of an annular groove in valve 55 and this annular to the upper end thereof. The internal gear 42 l'groove is connected by channel 15 to port 11 of meshes with a spur gear 45 which is fixed with valve 55. The port 11 thus corresponds to port shaft 44 which carries the spur gear 35. By 51 of valve 55 in that both are supplied from the means of this arrangement the cutter spindle |5 lvariable delivery feed pump 55 so that by con may be rotated in its eccentric position and the necting either of these ports to the respective cylinders, the respectivel slides will be moved at quill 4| may be rotatably adjusted without break a feed rate; Similarly, the port 15 is connected ing the driving connection to the spindle. ~ In addition the internal gear 42 has elongated by a channel 15 to port 15 of valve 55 so that the return side of cylinder 55 may be connected teeth whereby the quill 4| may be axially ad justed to vary the cutting plane of the cutter 45 to the intake side of the variable delivery pump when the output of the pump is connected to the attached to the end of spindle I 5. 4A quill adjust ing mechanism, indicated generally by the ref~ opposite _end of the cylinder. As previously mentioned, the valve plunger 5I erence numeral 45, is provided for effecting'axial adjustment of the quill. ' 'I‘he support Il is di 40 vided, as shown at 41 in Figure 1, for clamping ` purposes and a pair of clamping bolts 45 are provided for securely clamping the quill in any adjusted position. It will be noted from Figure 1 that the end of the quill 4| _has a plurality of radial holes 45 drilled in the periphery thereof whereby a suitably formed wrench may be uti lized for changing the eccentric position of the cutter spindle. By means of this arrangement the cutter 45 may be raised or lowered in a ver 50 tical plane and axially adjusted in a horizontal so' is in a stop position and therefore the- pressure port 11 is disconnected by the spool 55 from port 5| and channel 52 leading to one end of cylinder 55. Likewise the port 15 is disconnected by the valve spool 53 from port 54 and channel 55 lead ing to the opposite end of cylinder 55. The rapid traverse pump 55 is utilized for re 45 turning either oi' the slides to a starting position at a fast rate and has a delivery channel 55 which is connected to port 51 of valve 55. When the pump is not being utilized for effecting movement of the slide, it is desirable that the same be con nected to reservoir so as to eliminate high pres >plane in accordance with the position of the sur . sures building up in the various channels. There face on the work which is to be finished. Fluid operable means are provided for recipro fore, at this time, the port 51 is connected by cating the table I2 and the carrier i1. As shown cannelure __55 to port 59 and channel 55. This channel is connected by port 9|, cannelure 52 55 55 in Figure l2, a cylinder 55 having a contained piston 5| is provided for moving the table i2, the and port 53 to the return line 54 which leads to piston being connected by a piston rod 52 to the the reservoir 95". The port 51 thus becomes the end of the table. rapid traverse supply port for valve 55 and the A cylinder 53 having a contained piston 54 is port 9| the rapid traverse supply port for valve 59. In other words, when the plunger 52 is shift 60 provided for moving the carrier, the piston being connected by the piston rod 55 to one end of ed to the extreme right position it moves a suf the carrier. ilcient distance to interconnect port 9| with port Fluid is supplied to these cylinders from a com 12, whereby fluid from pump 55 will be delivered mon set of pumps including a‘variable delivery to the end of cylinder 53 opposite to the feed port feed pump 55, a pump 51 and a rapid traverse 55 to thereby cause a rapid return movement of pump 55. A first control valve 55 is provided the slide i1. At this time the channel 54 is con for determining the coupling of the pumps to the nected by the cannelure 55 to the return port cylinder 55, and a second control valve 55 is pro 55 which is connected by branch 51 to the return ‘ vided for controlling the flow to cylinder 55. line 54. When the plunger 52 is in the same These valves are exactly the same in construc position as the plunger 5| is now shown the tion and ‘each one has three positions, including slide |1 will be stopped. . a feed position, a central or stop position and a The valve~ plunger 5| which controls movement rapid traverse position. The plunger 5| of valve 55 is shown in a stop position and the plunger 75 52 of valve 55 is shown in a feed forward P951 of slide I 2 has the same three positions as plunger 52v and when shifted to the left will connect the feed port 11 to port 5| to cause feed movement ' 2,111,288 of slide l2 ltoward the left; and in its'other ex treme position will connect the rapid traverse port 01 to port 84 to cause a rapid return move ment of slide l2. 'I'he valve plunger 82 is shifted by a lever arm 98 connected to rotatable shaft 99. The shaft 99 extends through the bed of the machine, as shown in “Figure 1, where it is pro vided with a manually-operable handle |00. The shaft 99 is also adapted to be trip actuated 10 from a feed position to a rapid traverse position. The shaft 99 extends through to the opposite ' “ 3 _ prevent the. operator from actuating the control lever |00 in a direction to complete this move ment,»which would result in the slide moving ahead again on a. feed stroke. The valve plunger 6| is operated by a simple Ul trip mechanism comprising a trip plunger |22 to which is attached another trip lever ||0 which is operable by dogs |23 and |24 carried by the slide |2. Also attached to the trip plunger |22 is a lever |25 which is connected by a link |26 ,to a lever |21 which is keyed to shaft |28. This end of the bed where it is provided with crank ' shaft carries another detent plate |20 having a arm |0| which is connected by a link |02 to the ’ oscillatable member |03. spring pressed detent |2|. A manually operable This member has a lever |29 mounted on the front of the machine is 15 pivotal connection at |04 to'a link |05 which is keyed to the end of the shaft |28 for manual op eration of the valve plunger 6| through the lever |30 keyed to shaft |28. In the position of the operatively connected througha bell crankv|06 to- link |01. The link |01 is connected to the crank arm |09 of a trip plunger |09. A trip lever i |0 is attached to the trip plungerfand has a pair 20 of contact portions ||| and ||2 at opposite ex tremities thereof which, as shown in' Figure 6, lie in different planes. The contact portion ||| is adapted to be engaged by trip dog. t and the portion ||2 is adapted to be engaged by the trip 25 dog lli. A detent plate M5 is keyed to the will permit movement of the lever in a counter clockwise direction to institute a feeding move ment of slide I2. - ' An interlocking mechanism has been provided fora preventing ymovement of either hand lever associated therewith tor normally holding the |00 or hand lever |29 to a feed position when the other has already been moved to such a position and comprises an interlock lever |3i formed trip plunger in either one of two rotatable posi integral Withthe pivoted member |03 which is plunger |09 and a spring pressed detent ~|| 6 is tions. 30 parts shown the trip dog |23 prevents movement oi' the trip lever |30 in a clockwise direction, but i . - ‘ in other Words, as the slide il? advances on its adapted to cooperate with an interlock plate |32 carried by the slide i2. The plate |32 has a notch |33 formed in it which is adapted to receive a roller |34 carried in the end of lever l3| when the slide l2 is in a returned stop po sition. ` If the slide i2 is actuated, the roller i3 is moved out of the slot by the moving plate itt, 35 detent plate t. lit will be noted, however, that » which rotates the shaft 33 and detent |20 in a the notches il! and itt in the detent' plate are clockwise direction to a mid-position if not,` cut to different depths so that the peak t is not already in such position, further movement in' located midway of the throw oi the lever, but that direction is prevented by the lever H0 con iacting the tn'p dog H3. It will thus be seen 4:0 to one side oi the center whereby after approxi that during the movement of the slide I2 the mately one-third of the Athrow has been com . pleteol the detent member it wiil ride over the valve plunger 62 is located in an intermediate feeding stroke, which would be to the left as viewed in Figure 5, the trip dog H3 will engage the contact portion iii and rotate plunger» 003 in a counterclockwise direction, as viewed in `Figure 5. This wili aiso cause rotation oi’ the peak and automatically complete the remainder of thé throw. A similar detent lever iii is asso ciated with the shaft itt“ and has a cooperating spring pressed detent t it . IThe end of this detent ' lever is formed the same as lever tit and there fore will assist in completing the automatic shitt ing of plunger t2. By having a detent lever at position. v ' Similarly, when the slide -_«||1 is moving, a de tent plateiâü attached to the slide l1 engages the Li5 end of an interlock lever |30 4which is keyed to a rotatable shaft |31, this shaft having an arm i3@ connected by intermediate linkage, .to _shaft |22. This linkage comprises a link |39 which is con 50 each end of the linkage it is possible to obtain 'nected through a bell crank |40 to a’ link iti accurate positioning of the valve plunger t2, as 4which, in turn, is pivotally connected to lever Iltiiof trip plunger |22, When-the slide il is in well as accurate positioning of the trip plunger. When the valve piunger tt is shifted to its its return position the end of the interlock lever extreme right position ‘by the trip mechanism, iii'ß..may move in a clockwise direction beyond 55 the rate, as well as the direction of movement. of the‘encl of plate- |35.- But when the slide |1 is 55 the slide il is changed because, first, the rapid ' eigeciiting a. cycle, movement of lever' '|30 con traverse pump is connected to the cylinder 53 and nected to plunger |3| is‘_prevented in one di furthermore this pump is connected to the op À'rection by interlock lever |36 engaging inter posite end of the. cylinder to which the i’eed pump lock plate |35, andin the opposite direction b 60 was connected. trip arml IIlengagingY-trip dog |23. - ¿t separate stop~1ever- M2 has been provided on tion at a rapid traverse'ratethe dog tit will en- , the front of the machine, as shown in. Figure l, gage the contact portion iii offlever i and and this lever is so connected that regardless of “rotate the same in a clockwise direction, as viewed which slide is being moved, operation of this in Figure 5. This movement _will continue until lever will stop said movement. This lever is con the valve t2 has moved sufliciently toward the nected to a shaft |03, which, as shown in Figure 8, has a crank arm Itri connected by a link itt left ‘to disconnect the' rapid traverse port @i from to acrank arm |06 keyed to shaft |41. The port 12, but further movement oi the valve shaft |41 actually extends in a vertical direction plunger will not take place due to the fact that in the machine, as shown in Figure 9, and has the detent members i it and |2| are in the deeper aA pair of spools |40 keyed thereto, each spool detents and the trip operated movement is not having a ñat side |49. These spools are posi suiiicient to move them over the peak points on ticned opposite the detent levers |20 whereby the detent levers. The result is that the slide is when they are in the position shown in Fig 75 stopped. This condition of the parts does not ures l0 and 11 the levers may be rotated but 75 As the 4slide il? returns toits starting posi 4 ananas when the spool is rotated to the position shown in Figures 8 and 9, the detent levers will be moved to a central position and heldin such po sition against movement until the stop lever is returned to a running position. If it is desired that the slide -|1 move at vari able rates, a rate control cam |50 may be at tached to the side of the slide for cooperation interlock means to prevent utilization of more than one of said valves at a time. 4. In a milling machine having a bed, a cutting means carried by the bed, a work slide and a cut ter slide carried by the bed, the combination of transmission means for effecting sequential move ment of the slides to produce different cutting paths including fluid operable pistons, individual with a crank |5| which is connected by link |52, « control valves therefor having stop positions, bell crank |55 and link |54 to lever |55 pivotally means to move either of said valves from its stop 10 mounted on the fixed shaft |56. 'I'he lever |55 position to an operating position, and positive acting means effective on said movement for may have integrally connected therewith a suit ably shaped cam member |51 which can engage holding the other _valve in a stop position, said the roller |55 in the end of the pump control positive acting means including a dog carried by pendulum |55 whereby rotation of the cam |51 the slide, a plate carried by the moving slide‘and 15 linkage interposed therebetween and connected to in a clockwise -direction will increase the dis ' ’ placement of the pump. A spring |50 may be the valve. 5. In a millingmachine having a bed, a cutter attached to the cam |51 to rotate the same in a counterclockwise direction and permit the pump spindle journaled on the bed, a work slide, and a cutter slide having a cutter spindle journaled 20 pendulum to return to a zero displacement po therein, the combination of transmission means sition. 'I‘here has thus been provided an improved -for producing different cutting paths including machine for the purposes disclosed which is branch transmissions to each slide, control mem simple to construct and operate and which makes bers for each branch transmission having a cen rit possible to machine a number of surfaces on a trai or stop position, a feed position on one side land a rapid traverse position on the other side of single set-up of a work piece, which would nor mally be inaccessible' on the conventional type said central position, means carried by the slides when in a starting position to prevent movement of machines and therefore require- a second set of either of. said controls to a rapid traverse up in order to machine them'. position, either of said controls being movable at I claim: l. In a machine tool having a work support will however to a feed position to cause movement and a tool support, the combination of power- of its respective slide, and means positionable by operable means for effecting a ,cycle of movement the moved slide as it leaves its starting position between the supports including feed forward, reverse, and rapid return; a shiftable control member having a central position which stops the support, and positions on either side thereof to effect feed advance and rapid return, a detent mechanism'associated with said control mem ber, a trip plunger operable by the slide, a de tent plate having notches of different depth, and a cooperating spring pressed detent whereby a predetermined movement of the trip plunger in one direction will effect shifting of said control member from one extreme position to the other,_ but movement of the trip plunger the same pre determined amount of movement in the opposite direction will only shift said control member from an extreme position to a central position. 2. In a machine tool having a pair oi' slides to lock the control member of the other slide in its stop position. 6. In a milling machine having a bed, a‘cutter spindle journaled in the bed, a work slide, and a cutter supporting slide, the combination oi' trans mission means for moving each of said slides for producing different cutting paths includins branch transmissions to each slide, individual rate and direction control members therefor having a _ stop position, a feed forward position and a rapid return position, a trip plunger associated with each slide.linkages operatively connecting the trip 45 plungers to the respective control members, man ual control levers for the control members and remotely located with respect to said trip plung ers, dogs carried by each of said slides and effec tive upon return movement thereof to shift said selectively movable to generate different cutting control members to a stop position, each linkage paths,~ the combination'of power operable means including an interlock lever, interlock plates car ried by the slides and cooperating with the inter lock lever of the other slide whereby upon move ment of one slide the control linkage of the other for moving the respective. slides including indi vidual controls, each movable to a starting po sition to initiate a cycle of movement of .the re spective slides, and .means carried by the slides whereby the moving slide will automatically pre vent movement of the control lever for the'other slide to a starting position, including a plate car ried by the slide and a pivoted member opera tively connected to the control lever, said member being positioned to engage said plate when the lever is in a stop position. 3. In a machine tool having a pair of movable slides and fluid operable motors for moving the respective slides, the combination of means for controlling operation of said motors, including individual control valves therefor, a feed pump connected in parallel to said valves, a rapid trav 70 erse pump connected in series to said valves,_ means in each valve to connect the feed pump for operation of the respective motor in one direction and to connect the rapid traverse pump for oper ation of the motor in an opposite direction, and slide is locked; and relieved portions in each plate and eñective when the slides are in a starting position to permit operation of either linkage at will 7. In a machine tool having a cutter support and a work support, one of which is movable relative to the other, the combination with trans mission means for effecting said movement, of a transmission control member, a trip control plunger associated with the movable slide and re motely located with respect to said control mem ber, a linkage mechanism interconnecting said trip plunger for transmission of movement to said control lever, and a detent mechanism con nected to each end of said linkage for insuring accurate positioning of both said trip plunger and said control member. ~ È HERMAN HORLACHER.