Патент USA US2407558код для вставки
Sept. '10, 1946. ' R. F. KNEISLEY 2,407,557 ARTICLE SURFACING MACHINE ' Filed May 16, 1945 17 l 2 Sheets-Sheet 1 Sept- 10, 1946. ‘ - R. F. KNEISLEY 2,407,557 ARTICLE SURFACING MACHINE Filed May 16, 1945' 2 Shéets-Sheet 2 4__ 4 . 9 16 5 i6 ~ 2104mm]? f?mszz’r "w, _a“m,i9?w W‘ Patented Sept. 10,’ 1946 2,407,557 UNITED‘ STATES PATENT I OFFICE 2,407,557 ARTICLE SURFACING MACHINE Richard F. Kneisley, Toledo, Ohio, assignor to Kneisley Electric Company, Toledo, Ohio, a partnership Application May 16, 1945, Serial No. 594,024 ' ' 3 Claims. (CI. 51-50) 1 2 Thlsinvention relatesto machines for grinding ' ‘ . [5. A work-piece l-B 0f vtubular form is mounted on the mandrel 9 with a sufficiently tight ?t to and truing the surfaces of tubular or cylindrical frictionally turn therewith. This work-piece, members, and is particularly adapted and in tendedfor operation on short tube lengths of rubber, or other plastic material. The primary object of the invention is the pro vision. of a simple and e?icient machine of this character which will simultaneously operate on which constitutes a short length of tubing of soft rubber or plastic'material, is mounted on and removed from the mandrel 9 at the tail piece end thereof before engagement of the man drel between the centers 8. a plurality of work-pieces to not only grind or abrade the surfaces thereof, but also to render them uniform as todiameter and surface con - , _ ‘ . The several work-pieces I6, when mounted on the mandrels 9 and held in working position by the sets of spindle centers 8, are disposed in cir-~ _ . cular series concentric to the axes of ‘the disks 4 in position to be circumferentially engaged-by Further objects and advantages of. the inven tion will be apparent from the following detailed the peripheral surface of an abrading wheel l1, description of ‘the invention and from the ac 15 that is rotatably mounted within the annular ?guration. companying‘drawings illustrating one embodi space. de?ned, by. the work-pieces, as hereinafter . ment thereof, in which described. ‘ ‘ r .. . l . ' The several spindles 6 are driven in unison by Fig. 1 is a side elevation of a machine em bodying theinvention, with the grinding wheel a chain l8 extending ‘around spindles I19 on the near the left end of its stroke ; Fig. 2 is a vertical outer ends of the spindles, and this chain, be cross-section on the line 2‘—2 in‘Fig; 1; Fig.3 tween two of said sprocket Wheels, extends over a drive sprocketwheel 20 on a drive shaft 2|. This shaft is journaled in standards on a bracket 22 which is mounted on the left end portion of the table I for vertical adjustment to tighten or slacken the chain l8. In the present instance, a motor ‘23 for driving the shaft 21 is attached to the under side of the adjacent end portion of the table I and has'a suitable belt and pulley driving is a similar section on the line 3—3 in Fig. 1; Fig. 4 is a fragmentary sectional detail on the line 4-4 in Fig. 2, and Fig. 5 is an enlarged sectional detail on the line 5—-5 in Fig. 2, with parts in full, and ‘Fig. 6 is a diagram of the wiring. , . Referring to the drawings, l designates a sub stantially flat table or frame; supported by standards 2 and carrying the operating parts of 30 the machine.‘ Fixedly mounted on the top of the connection 24 with said shaft; > I ‘ ~ The abrading Wheel ll, which is preferably of table 1 near one end on standards 3 is a pair a nature to grind and reduce the surfaces of of, axially spaced. disks 4 held apart and braced by a plurality of tie-rods 5, eight in the present the member l6 so as to render them of uniform instance, which are equidistantly spaced in con centric .relation around the aXis of the disks. - from and driven by the rotor member of a motor Carried by the disks 4, with one midway between each pair of adjacent rods 5, is a set of work carrying spindles 6 and ‘I, the former being the live spindle and the other the dead spindle. These spindles are provided at their adjacent ends with conical centers 8 for engaging the re spective ends of .a work-carrying mandrel 9 for concentric turning therewith. ‘ Theldead or tail diameter, is mounted on a'shaft 25 projecting 25, and disposed centrally of the set of mandrels 9. This shaft extends beyond the abrading wheel ll and is mounted at each side of such wheel in bearings 21 within tubular housing sec tions 28, the inner one of which relative to‘ the motor 26 is ?xedly attached to the motor hous ing. These housing sections project through center bearing openings 29 in the disks 4 and the outer one is prevented from turning with the spindle 1 -is adapted tolhave limited axial move ments in a sleeve I ?carried by the respective disk 4 and is held in yielding center engagement with the mandrel by theaction of a coiled ex shaft by a feather 30 thereon engaging ,a recess held in adjusted positionithereon by. a set-screw. ards 3B ‘rising from the table I ‘and held thereby in the opening wall of the respective disk. The motor 26 is mounted on a carriage 32 for axial movements toward and away from the ad jacent disk 4. This carriage is mounted on a pansion spring H. The live spindle is provided with a, radially projectingpin l2 >wich engages 50 track 33 supported by the table I. A feed-screw 34 ?xedly projects from the outer or right hand an ‘L ?nger i3 projecting from the adjacent end end of the housing» oi‘the motor 26 through the of the mandrel 9 and causing the mandrel to hub of a pulley 35 in threaded engagement there turn with the spindle. . The finger 13, in the with. This pulley is suitably mounted in stand present instance, is carried by a collar l4 that is 2,407,557 3 4 against axial movements so that rotation of the pulley will impart axial movement to the motor 26 through the medium of the feed-screw 34. It is apparent that such movement of the motor 26 will shift the shaft 25 and the housing sections 28 with respect to the disks 4 so that'the abrading wheel is. caused to have axial movements in par movement until the opposite limit switch has been engaged and opened to effect an opening of the motor control switch 53 and a stopping of the travel of the grinding wheel at the opposite end of its stroke, removal of the ground work pieces and substitution of others on the mandrels may again be repeated. allel relation to=the=axes of ‘th‘e‘work-carrying ' I wish it understoodithatgmy invention is not mandrel 9. The pulley 35 is driven from a motor limited to any speci?c construction, arrangement 49 suspended from the bottom of the right end. 10 or form of the parts, as it is capable of numerous modi?cations and changes without departing portion of the table I, such driving being through from the spiritof the claims. a pulley and belt connection 4! toza'count'ershaft“ Having thus described my invention, what I 42, and thence from a pulley on said shaft and claim‘ras'new; and desire to secure by United belt 43 to the feed-screw pulleyiii?r' The;motor States~Letters~ Patent, is: 49 is of the reverse type so as to drive the‘feed ' screw 34 in either direction as desired, and ‘is 1. In a'machine'of the class described, a man controlled by a reversing switchll?iofTwhichAB is the control handle. When the carriage 32 is at the limitpf‘its" to hold an axially elongated cylindrical work drel mountedrfonrotary movements and adapted piece,‘ means including an electric motor for ro movement to the left, anarm 4‘! thereon engages 20 tating said mandrel and work-piece, a carriage mounted for reciprocatory movements-in-aaplane the control button of-‘a- normally closed: limit: switch‘48"andiop‘ens the motor control‘circ-uit, and‘iwh'en at the limit of its'travel' tozthe‘rigiht; an arm'41' thereon engages the control'button of‘ a‘ normallyfclosed limit switch lwand a'gain'opens" said" motor' control circuit. Since: th'e'operation‘ of'the travel motor 40 is‘ controlled by“ limiti parallel. to the‘.: axis r of ' rotation: of‘the' mandrel, anr‘electric'motor mounted'on said‘carriage for‘ movement therewith;'a grinding wheel driven’ by" . said last motor for‘peripheral’engagement with a side'of "the work-piece carried 'by ‘the mandrel and for ‘movement with the motor to causethe switches, normally open- shunting ‘switches . 505 and wheel to‘ traverse from one end to the other of‘ 51: are provided‘ in parallel'with'the' respective the work-piece; feed means including an electric‘ switches 48 and '49"to'loe.'selectively closed during 30 reversing‘ motorv for imparting predetermined starting? of ‘ the: travel motor ‘ to 1 return it' in ' the: movement to said‘ wheel, ?rst'motor"and 'car opposite direction. Thus, to accomplish" itstre riage lengthwise of a work-piece, said‘ electric turn‘; the 1 control arm: 4'6 fof ’ the reversing switch motors being connected in a common electric cir 45'3is1th'r‘own inl th'eioppo'site‘ ‘direction 'aft'eriwhich' cuit, a normally open main‘switch in said circuit,‘ the‘ respective *sh'unt switch, 50 or 51', is'normally 35 a control circuit including’ means ‘magnetically held? closed until ‘ the" carriage‘ has started: and: operable to maintain said switch closed when moved su?iciently in the opposite direction: to said control circuit is closed; aicontroll’switch and effe'ct'irelease of! the limit switch','when.the:.shunt two ‘normally closed limitswitchesin-said control ' in'g switch maybe released.v Itisgpparent'that. circuit, means‘ movable with said carriage'ifor the carriage 32vand grinding wheel I’! come :to' 40 opening one or' the other of said limit switches rest" at each‘ end‘of their‘ strokes and remaintat rest until the reversing switch 45 'has'b'een thrown‘ and‘ the respective shunt'switc'h' 50?,‘ 5]; closed.‘ In the wiring diagram shown in'Fi’g;i6,:arthree wire~main line‘ circuit having wires 11, b, and c; is employed, and leads d, e; and f'extend-fromv these-totheseveral motors '23, iii-and‘ 46; A main- control'switch- 53, common to all'th'e~motors, is disposed in these‘ leads and'the'reve'rse switch 45 is disposed‘ in two/of’ the branch leads‘ ,, tov the travel motor 40. The‘motor‘switch' 53“is of the-normally open electro-magnettype, with: its ‘solenoid coil “disposed in thecontrolcircuit. g'i'n‘rwh'ic'h ‘the two limit switches 48I-an'd 49 are: disposed- so that- when either‘ of said limit‘ switches,- or a-control switch: 55, in thecircuitg, is "ope'n'the coil is deenerg'ized' so that th'e'motor, contro1iswitch>53 isopen and the motors are at‘ rest‘; Inth'e operation of the'm‘achine, the grinding of'the work-piecesoccurs during axial travel of. the-grinding‘ wheelin?on'e direction or the other‘ and-when the wheel‘ travel isiat‘rest'at’e'ach end‘ ofv its ‘stroke, the mandrels are‘ removed. with the3 groundwork-pieces thereon‘ to‘permi't removal of such pieces zfrom~ the mandrels. When this’has been done and‘ other'work-lpieces placed on the mandrels, the latter are replaced in connection with-thespindles 8i and the button of the shunt switcliB?', 5|, associated with the limit switch‘ 70 that‘is'th'en open, is pressed tov closethe motor control" circuit g and to retain it closed until the carriage 32' is'mo-ved sufficiently in its reverse‘ direction-to release the'eng‘aged: limit switch but ton. The carriage then‘ continues its travel when the carriage'is at one or-theotherend'of’ its intended-reciprocatory'movement, a normally open shunt switch in said control circuit in asso ciation with each limit switch and operable? to close the‘ control circuit- during» an open period‘ ofltheassociated'limit switch, and a manually operable reversing switch in circuit with said re-_ versing motor. 2. In'a'machine of ‘the'class- described, a'plu? ra'lity of mandrels eachforrholding atubular, work-piece, means for-releasably holding said.‘ mandrels’ in circular series with their-axes. par allelandfor rotating-each mandrel about'its -axis,. an- abrading wheel mounted within the series of mandrels concentric "thereto ' for- peripheral trim-V mingengagement withya'work-piece carried by each mandrel, anrelectric motor. operable to ro tatablydrive- said wheel, a" feed means'operable to impart axial movements to said wheel to move. it'lengthwise of‘the work-pieces, a second motor. for drivingjsaid feed means, an electriccircuit including, said'motors; a normally open electro magnet switch for closing said motor circuit, and‘ an electric 'controlycircuit operable when closed to e?e'ct a closing of said ‘switch and‘ including, a normally, closed limitiswit'ch that. is automati cally operable to open said control circuit at. a, predeterminedpoint in an axial movement ofsaid wheel and. its driving motor. 3. In a machine of’ the class, described, a man-‘ drel'ifor holding‘and rotating a cylindrical work-j piece, means includingan electric motor for driv ingj said. mandrel, a grinding wheel 'rnounted" for axialreciprocatory travel and ‘to have peripheral; grinding coaction'with‘ the surface of ‘the work 5 2,407,557 piece during such travel, an electric drive motor for said wheel axially movable therewith, means including an electric reverse motor for imparting axial reciprocatory movements to said wheel and its driving motor, an electric circuit common to all of said motors, a normally open magnetic switch in said circuit, a control circuit for said switch operable ‘when closed to maintain said ' 6 tor, two normally open limit switches and a con trol switch in said control circuit, means movable with said wheel and its motor during axial travel thereof to engage and open one or the other of said limit switches at the end of each stroke of said wheel and its motor, and means associated _ with each limit switch and manually operable to close‘the control circuit during an opening switch in closed position, a manually controlled thereof by the associated limit switch. reversing switch in circuit with said reverse mo- 1*) ‘ RICHARD F. KNEISLEY.