US2479112A - Honing machine - Google Patents

Description

F. P. HEGEMAN HONING MACHINE Aug. 16, 1949;

Filed June 11, 1948 ms A TTOEJVE Y.

Patented Aug. 16, 1949 UNITED STA-r HONING MACHINE Franklyn P. Hegeman, UnionQN. J., assignor to corporation of Delaware General Motors Corporation, Detroit, Mich., a

'Application June ll, 1948, Serial No. 32.320

16 Claims.

' This invention relates to honingmachines and 4' is illustrated by way of example as constructed for honing the peripheral surfaces of conical rollers. An object of the invention is to provide an improved honing machine for finishing the peripheral surfaces of round work pieces. Another-object is to provide improved apparatus for controlling the introduction and removal of work pieces to and from their honing positions. Another object is to provide an improved mounting for a hone, as to enable it to tilt and conform to the work surface as it reciprocates. To these ends and also to improve generally upon machines of this character, the invention consists in the various matters hereinafter de-. scribed and claimed. In the drawings Fig. 1 is a plan view with certain honing mechanism removed and with a support in section.

Fig. 2 is chiefly a front view of Fig. 1, the hone carrierand associated parts being added.

I Fig. 3 is a perspective view; Figs. 4 and 5 are perspective views with different parts removed or displaced to reveal other parts.

Fig. 6 is a front view in section.

Fig. 7 is an exploded View of the hone holder andits carrier in perspective. Fig. 8 is a vertical section of Fig. 9 one of the carrier cheeks being removed and Fig. 9 is a hori zonta'l section of Fig. 8. r e Referring first to important elements and functions, work pieces W, herein shown as tapered rollers, are supplied, largeand foremost,by any suitable feeding mechanism to a hollow loading block 2 from which they are-intermittently released onto a hardened work rest 4 for a honing operation by a reciprocating hone ID. The work is rotated by engagement with a pair of driven rolls 6 and 8 and is released after honing by an ejector blade l2 which normally lies between the driven rolls but is advanced simultaneously with the retraction of the hone. An escapement mechanism releases a new roller onto the ejector blade and, upon retraction of the blade accompanied by advance of the hone, the new roller is dropped from the blade onto the work rest. The driven rolls 6 and 8 are each secured by a washer land a bolt IE to a vertical spindle l3 suitably journalled in a quill 20 on a support 22. The rolls are driven in the same direction about their axes as by mechanism disclosed in patent to Hutchinson 2,433,455 except that it is preferred that the spindles be parallel instead of skewed. A ring 24 on the quill 20 has a flange projecting into a circular groove of each driven roll to ex-. clude grit. j The loading end'of a slotted plate 26 adjustably-secured by screws ztto-aclamping. plate .30 oath: that:

of the loading block party block 2 is welded or brazed to the r 2 I I of the support 22. Each side of the loading block has a pair of vertically perforated lugs 34 each holding/the upper end of a spring wire 36 which projects downwardly beyond the lower end of theloading block. The wires are guided in slits 38 at opposite sides of the loading block and their lower ends are closer together than the diameter of the work. It will be noted that the lugs and wires are offset from the center of the loading block. Hence the wires will act to urge the work piece into contact with the driven rolls but they can be spread apart to release a finished roller when the blade I2 is advanced.

The loading block has an opening 40 through which a lug 42 on a lever 44 is normally projected to support the column of rollers. The lever 44 is pivoted at 46 in a fork at the end of anarm 48 fixed on the bottom of the plate 26. The lever and lug, are urged to holding position by a coil spring 50 attached to an upright lug 52 on the lever and to the plate 26. An adjusting screw 54 one short upright lug of the lever wil1 engage the loading block to limit the entry of the lug 42 through the opening 40. The upper portion of the lug 52 lies in the path of a screw 56 adjustably secured to an offset arm 58 on an upright bar 60 which is secured by plates 62 to a slide 64. The'lower end. of the bar 60 passes through the slotted plate 26 and is slotted to receive the ejecting blade l2. The slide 64 is shiftable along a fixed slideway 66 by means of a piston and cylinder unit 68. The slide carries the honing tool and appurtenances.

The hone ID has its forward end curved to fit the work and it is clamped by a headed screw 10 in a split block or hone holder 12. The holder fits freely between forwardly projecting cheeks on a carrier 14, the cheeks having V-shaped recesses 16 in which bear the sharp edges of lugs '18 projecting from the hone holder. The sides of each recess 16 make a larger angle than the sides of each lug 18 so that the hone holder is capable of rocking movement to a limited extent. The lugs and recesses are kept seated by means of a projection on the hone holder connected by a coil spring 82 to a cross pin 84 on the carrier. The carrier is bored out to receive the spring and the projection. One of the checks of the'carrier has a slot 85 of greater width than the head of the clamping screw ll'lto allow rocking of the hone holder.

The carrier 14 is brazed to the lower end of a sleeve as which is adjustably secured by set screws to the lower end of a reciprocating rod passing through a guide bearing 92 on the slide 64 andreciprocated. through a short stroke by any suitable crank mechanism .94 mounted on the slide. Thus the honing mechanism is shiftable towards the work simultaneously with the retreat 9f the. b a e za ay t omthe, w handis sh ft:

able away from the work as the blade advances towards the work. The Work rest 4 is formed on the t0.p:offan upright blade carriedby a slotted base 96 which'is adjustably securedt'o thesup port 22. In the illustrated construction the work W consists of tapered rollers and the driverr rollers 6 and 8 are conical to support thefiworks with its axis in a vertical position. The rod 90 reciprocates at a slight angle-toithevvertical tcarry the hone lengthwise alongthework: Theapparatus is adaptable to hone cylindrical work in which case the driven rolls are cylindricaliandi the hone is reciprocated parallel to the roll axes..

In operation, with aroller on the work'rest, the hone is reciprocated for a timed interval wheteupomthelslide filllisar-etract'ed. Asa-theshone moves away; from". the: work; the; blade I 2-: pushes thework: offi'the; rest, the workzspreadingstheiwire; springs 36;, As, this: occurs. the; screw 565 errgagessth'e; lug- 52" amt withdraws the dog 42 from" thedoading: block thereby releasing :thea nextrrollerwhichtldrops :upon therblade l 2 temporarily: The slide 64 then: advances; fi'rsta allowing: the coil spring: 50: to project: the lug 423 into" the loading black to'clamp:thezcolummofiwork pieces. Further: advance-softh'eislide causes=theb1ade1 [Z ta ride-.out-from: beneath the-piece anddropzit upon' the work rest, the wire springsinsurings contact of? the". work: with. the driven rolls: as: the hone makes-: contact: with the: work; The: rockable U mounting of; the hone causes it' to-seat itselfand' conformzto lJhG'JWOEkL I-' claim:

11 Ima honlng'machin'e' having a pain-of roe tatable rollsstoengage the'peripher-y: of a round work: piece'-. and a: work rest to engage and sup portgone:endiof thezworlipiece; a bladeextendingbetween: the rotatable rolls; a hone in opposed relatiomtoithe blade, .mechan'ismfor. reciprocatingthe hone lengthwise of the work piece, a slide forming a common: support for said mechanism ands said blade; andmeans: for: shiftihg the slide toiwithdraw. the-hone from the work and advance the blade? across the work: rest towexpel alfi'nish'ed- 2: In a;..h0ning machineihaying' a: pairtotro tatable rolls to: engagewthe periphery of a srounrl work piece and a work rest toren'gage andisuppont one. ends of the: work: piece, a 7 blade: extendingrbetween themotatable 11011833; hone in "opposed relax tion tothe blade; mechanism= ion-reciprocating the: honelengthwise of the work: piece; a: slidefonming a.common support for said mechanism and said blade, means for shifting the sli'd'e to withdraw: thehone from the work .and expel-a finished piece from-the; work rest; a hollo wrload ing-block'togulde a column-of worl pleces inline with the workrest; andmeans actuated-by the slide for releasing a new work piece from the lbadingblockz 3; In a honing machinehavi'ng a pair-of rotatable rolls to engagethe periphery of-a round' work-piece and a work rest to engage and support one end of thework piece,- a blade extending between: the rotatable rolls, a honeon the opposite side of the work rest from the -blade',-ahollow loading block to guide a column- 0f work pieces-in line with the'work rest; mechanism for reciprocating the hcnelengthwise of the; workpiece; a detent for supporting 'asupply-ofwork pieces" in the loading block, a common. support for said reciprocating mechanism and said -blade, means for shifting the common support to withdraw the hone fromthe---worl:- and' advance the blade between.- the work restand" loading 4 block, and means carried by said common support for actuating the detent to release a work piece ontossaid blade.

4: Irr a-honing machiiie-having a pair of rotatable rolls to engage the periphery of a round work piece and a work rest to engage and support onegende of the work piece, a blade extending between the rotatable rolls, .a hone in opposed relation to the blade, mechanism for retracting the hone: fromi thework and advancing the blade across" the work rest, a hollow loading block to g uidaacolunmgof, work pieces in line with the work rest, a pair of spaced spring members for guidinga work piece from the loading block to the work rest, said springs normally being spaced apart: an distance; 1555i thanz the: diameter; of? a work; piece: and adapted to: be=spread= apart. when; the,- blades expo-ls: a finished; work piece, from the worhzresiz.

a In": as honing machine: having; a: pain-of: ro; tatablea rolls; to" engage; the;--periphery; of: a: round: workpiece andiazworkcrestctoi engagezandasupport oneaendliOffllhel workpiece; ahollowsloadina block to: guide: a columm ofi work: pieces; in; line with the-workirest;v a .pa'irlroiyspringzmembers for-"gum:- ing: a work piece;- from: the loading blocks, to; the wonkarest; .saidaspringmembers-being offsetlfrom, the; center of: the: loading. block andi having their terminal;portionszclosen'together thanthe; diam? eter of: 33 work pieces to: urgerw work piece into, contact withrthezrotatable.110115;, a blades. and means ior projecting; the; blade across the. work rest: tozexpel a. work piece; between the: spring members, a

6. In a;honing:machine;hayingaalpain ei-rotataable rolls to engage: the periphery of; a; round work. piece: and; a.- work; rest t0 engage: and: support-one: end at the workpieceaaqhollow-loading block to guide a column of work pieces imp-line, with: the! work" .rest at pair of spring members offset from the center of the loading blockandextending towardsathe work're'sn.thersides ofi the I loading block havingzslitseto;receiyeintermediate portions-10f the =.spring:membe'rs;- and theiterminal portions: of the spring members. being closerto,- gether than the diameter ofazworkxpiece tore:- tain the -latter in contaet:with therotatableirolls.

7-. I11 aalioning machine havingra: painofrotataable rolle to engage the periphery of a round worl'e piece and a workrest-to engage and sup port oner-end of the work piece, a: hollow loading block to guide a column of Work pieces in line with the work rest; and a pair of spaced spring members'for-guidinga wonk-piece from the loadting block to the work' rest; said: spring members bein'g ofiset' from' thecenter-of the loading block: and-being cl'osertogether'than the diameter of a 'worlc'piece to urge the-work piecetowards the driven rolls;

8; In a honing machine having a pain-of rotata able rolls' to engage the periphery of a round work -pierce-and awork rest to engageand support oneend-ofthe work piece; a hollow loading block in line-with-=thework rest to guide: a column of work pieces thereto; a'blade adapted to be advanced-between the 'loadin'g block and the work rest'to expel a work piece from the rest; a reciprocating slide 'for advancing and retracting theblade, a detention supportingwork pieces m--the loading blockg means actuated by' advance of -the bladeforreleasing the: detent to d-ropa work piece onto the blade, and a spring' f'on moving the detent' to-liol'ding position: asthe bl'ade is retractedi-to release,- the workpiece onto the; rest;

9% In ac-honingmachine having:a'pair: of rotatable rolls to engage the periphery of around workpiece and a work rest to engage and support one end of the Work piece, ahollow loading block in line with the work rest to guide a work piece thereto, a hone, mechanism for recipro-" cating the hone lengthwise of the work piece, a slide supporting said mechanism, a springpressed detent for holding work pieces in the loading block, and means for shifting the slide to retract the hone from the work, expel a finished work piece and move the detent from holding position to release a new work piece from the loading block.

10. In a honing machine having means to support and rotate a round work piece on its axis, a hone, a pair of hone mounting members connected together for relative rocking movement, one member having a pair of projecting cheeks embracing a portion of the other member to, prevent lateral movement, the cheeks having angular recesses, the other member having projections with edges to seat in the recesses, the

sides of each recess defining a larger angle than V the sides of the projections, a spring connecting the members together to hold the projections and recesses in seated relation, means for clamping the hone to one of the members, and reciprocating mechanism connected to the other member to actuate the hone along the work piece.

11. In a honing machine having means to support and rotate a round work piece on its axis, a hone, a pair of relatively rockable members, one member having a pair of recesses and the other member having a pair of projections to seat in the recesses and rock therein, a spring connecting the members together to hold the projections and recesses in seated relation, means for clamping the hone to one of the members, and mechanism for reciprocating the other member in a direction to traverse the hone lengthwise of the work piece.

12. In a honing machine having means to support and rotate a round work piece on its axis, a pair of relatively rockable members, one member having a recess and the other member having a projection to seat in the recess and rock therein, a spring connecting the members together to hold the projection seated in the recess, a hone, means for clamping the hone to one of the members, mechanism for reciprocating the other member in a direction to traverse the hone lengthwise of the workpiece, and means for preventing relative movement of the members laterally of the work piece.

13. In a honing machine having a'pair of driven rolls rotatable in a horizontal plane, a work rest and a work loading block in vertical alignment with each other and offset to one side of the plane of the roll axes, means for feeding round work pieces in succession from the loading block to the work rest, a hone, mechanism for reciprocating the hone lengthwise of the work, and a slide carrying said mechanism for causing the hone to press against the work and urg it into rotating contact with the driven rolls.

14. In a honing machine having a pair of driven rolls, a work rest and a work loading block in alignment with each other and ofiset to one side of the line of roll centers, means for feeding round work pieces in succession from the loading block to the work rest, a hone, a mechanism for reciprocating the hone lengthwise of the work, and means for pressing the hone against the work to hold the work in rotating contact with the driven rolls.

15. In a honing machine having a pair of driven rolls, a work rest and a 'work loading block in alignment with each other and ofiset to one side of the line of roll centers, means for feeding round work pieces in succession from the loading block to the work rest, a hone, mechanism for reciprocating the hone lengthwise of the work, said mechanism including a rockable mounting for the hone to provide for selfconforming contact of the hone with the work,

and means for pressing the hone against the,

work.

16. In a honing machine having a pair of driven rolls, a work rest and a work loading block in alignment with each other and offset to one side of the line of roll centers, means ford feeding round work pieces in succession from the loading block to the work rest, a hone, mechanism for reciprocating the hone length- Wise of the work, a slide carrying said mechanism for moving the hone towards or from the work, and a blade connected to the slide and actuated thereby to project the blade between the driven rolls and across the work rest.

FRANKLYN P. HEGEMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,085,863 Hess Feb. 3, 1914 1,531,043 Strong Mar. 24, 1925 1,892,364 Raule Dec. 2'7, 1932 2,354,347 Peets July 25, 1944 2,433,455 Hutchinson Dec. 30, 1947

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