US2380039A - Turning tool - Google Patents

Description

July 10, 1945. v. w. GIDEON TURNING TOOL Filed Oct. l2, 1942 3 Sheets-Sheet 1 July 10, 1945.

if@ 6 l Y;- Mi [l 515055 n.47 '49 @j 4647 44 4 J8 l l 4T 45 July l0, 1945. v. w. GIDEON `2,380,039

TURNING TOOL 5 sheets-Shen 5 Filed Oct. l2, 1942 INH lllllpFW/.Illll fifi/622W @@z? Mdm J' Patented July 10, 19475 Lamas v.

" Victor' Gideon;Clicago,llll;assgnorto Boyar? Schultz Corporation, Chicago, Illiia corporation Application october 12,142g1sefia1 no fmnma .1 i denim; (crise-assi",

Thecinvention relates `tinning tools, and

particularly to` those adapted 'for use in lathes'or .the like. i i

` Anobjectof theinvention is. to provide a new and improvedtool of this character which is simple, sturdy and compact inpconstruction and :includes .novelI means for effectingY retraction.` of Y the cutting tooluwhen desired and; for opposing i the thrust imposed on the" workpieoebytheA cut- `members"han/ing novel, quickly` adjustable means for varying the' position and relation of the memberstodilerent workpieces. i

Other objects and advantages will become ap-` parent `in thev following. description and from the accompanyingdrawings `in which;

prokimateneeritrauy located @mamme here ri for theaend of aworkpiece.` A cutting tool I8 andrzitsnsupportingl means,` generally indicated atri Ila-(Figi. 1 )1, are mounted on. the-front Afa `ze`- o .the fbody at onesid'eiof the bore Wand tliriiste` i opposing means; generally` designated 2tlg` is` disl` posed` diametr'ca'll'y' opposite thereton` The cnt# tingztool isarranged for adjustment relative: to

a workpiece supportedy substantiallyion the axis` of the-boren I1,i and Athe thrdst`opposing` means is.` adjustably arranged ffor" `proper engagement withtsuclworkpiece to support orbacli` it against radiali movement `during a cutting operation.`

.. Referringrtothe cutti'ngtoolsupportingmeans aseshownubestin Figs; 1;,-2`1and 4,1tl'1e-1ower por` i tionof-,thewfront-facef oi the-body l5 (as seen in FigureV 1 shows in elevation .the enfacefof l ak turning tool embodying the features off the invention. i Y l y Fig. 2#` is a side=elevation thereof..

Fig.` 3 is a transverse sectionaliview through the tool taken substantially along the line' 3.43

Fig. 4 is af sectional vieWtaken substantially `along.theline 4-4' of Fig. 11; i i

Fig. 5- is 4a sectional Viewfshowing` a detail of the tool retracting means andistakenwsubstan tia1ly-as-indicated by the line -f-ofFig. 3

Fig..6 is a planviewothe'tool. i i l f Fig.` '7 is a sectional View through thethrust.-

opposing means taken snbstantiallyalong.` the 'g line 'l-l of Fig. l,` with parts in thebackground brokenaway.

Fig.` 8` is a detail View illustratingv'thesend: face ofthe supporting member for? the thrust-opp0s` ing means. l M u Fig; 9-isf a perspectiver Viewof one ofsthe thrust-opposingroll and armV assemblies.

While the invention is susceptible or various `modifleations\ and alternative constructions'gfl have shownin the drawingsand will hereiny describein detail, the preferred embodiment, butit is to be understood that I ido not thereby intend `to limit'the` invention to thespecic form disclosed, but intend` to cover` all modifications and alternative constructions falling within; the spirit and scope of the invention as'.expressednin` the appended claims. i R

The turningitoo-l in its exemplary form illus--` trated herein, is adaptedfor nseawith such ma#- chine tools as lathes; Itl embodies a somewhat rectangularly shaped bod; :i5 having a. shank I6` extending from its rear face for mounting the tool on vthe lathe; The: body.` hast am ap`` supporting atool carriage or'slide 2'2` held' on the waysfby gibs on opposite sides of theborelf'l yIi'he slideris.recessedyfasL at 2'41, to clearthebore lil-` and` Vat one side. or the bore has an ontwadlv projectingsknee: angularly traversed by"a1:`oo1`` receiving opening 26 slopingl toward: the bore y I'L `'I?he:tool"sf adjustably heldinthecopenin'g 2,6;byfsuchfmeansuaslscrewsf2lif i `Adjusting meansfondetermining thefposition otfthen toolwrelative to the workpiece has associ n `atediztherewithmeansfoperable to retractithe tool to clearltheiworl or to return theto'ol tor its org-4 inahposition: Referring particularly" to Figs 3 and-: il; the'V body' 5i hasta recess 28l between the slidably mounted in the bores 43 have taper:`

3U inoculated.Y errandA projecting from `the lre'ar face of"tl:re.'slid`e 22".E y side yofthehml'yinto `the recess 23l in a direction paralleling the" ways.` adjustingfscrew assem` bly! :i2-Gis` rotatably mountedrn the bore 3l. The screwassem'b'ly has af-threadedfinner end 313'fo`r i engagement w'itlr a threaded boreg3`4* in the enlarge'dr end M29 ofithe pinSUf Adjoiningfthe threadediend is 'an integrali flange 35 andl spaced therefrom nearl the outer en'd of ther screw" is` a fknurled llrieanili; The `flange andlheadlare dif` Inensionedtost the bore 3i snugly; Theouter end'of-the` screw may be squared as at and `the. head- 36? and the body may havecorrelating "Ai .cylindrical sleeve `399 dimensioned snugly vto tfftheborelL is mounted 'for relative rotational butLnon-axiall movementon the screw 32 between thetcollar'and headfithe sleeve beingslotte'd errent awayonone side, `asindicatedat "t` (Fig.`

3) "tof` permit`assemblyil thereof` over ther "screw` shanln `Injthe outer surface ofthe4 sleeveoppo'- site?y the slot-` a pair of norrnally'` extending-axially spacednotehes or recesses'lil areformed having axalfa'ce's 42 which are angularly related; to" converge inwardly'. 'Il'hefsideof""the body upositev tnesnotchesfhas apair of bores 43"V 'opening' into the bore'Sfl' andiinto a recessddfin thebody: i Pins Av bore v3l `extends throughone` ment of the two pins are equal.

` itsoperative positions.

ing cam noses, indicated at 46, opposed surfaces of which arecomplemental to the surfaces 42 of vthe notches 4I The ends of the pins 45 in the recess 44 have heads 41 which are urged by springs 48 againstl Vthe face 49 of an operating lever 50 pivoted, as

at 5 I, on the body within the recess 44. The axis of 'the pivot is on the center line between and paralleling the axes of the bores 43. The leverv Abores 43 and pins 45 are preferably spaced apart a. distance slightly greater than the distance between the center lines of the notches 4|the arrangement being such that when both pinsproject equally into the slots only the outer of theV notch surfaces 42 will be engaged by the correspondingfouter faces of the pins 45. Thev collar 39 is thus clamped against axial movement by the pins 45 and rotation of vthe ladjusting screw 32 will shift the slide to adjust the position of the tool relative to the work. l Moreover, by this ar- Y rangement rocking movement of? the ylever 'V in either direction willdepress one pin 45 and release the other pin and the incrementsof move- The identical angularityfof the complementary meeting surfaces onv the notches and the noses of the `.pins insures that as the pins lrespectively move into and out of the notches contact between the meeting `surfaces of the pins and notches will be maintained, thus insuring that the slide in anyposition thereof will be positively clamped against movement other than that produced by the pins. l The intermediate position of the parts as illustrated will` not frequently be used since the slide will generally be in one or the other of its'extreme `operative positions. Thus, movement of the lever handle 52 to the left or counterclockwise (as seen in Figs. 1 and 3) depresses the inner one of the pins 45 and releases the outerone. The movementof the inner pin cams the sleeve 39 and adjusting screw 32 to the left moving the slide accordingly. At the limit of such movement, as determined by full engagement of both sides .of the nose of the inner pin 45 with its associated notch, the tool will be clamped invariably in its predetermined operative cutting position. Thisv Vposition is, of course, determinedby the adjusting screw. When the operator wishes to retract the tool-to relieve itfrom the work, the lever handle 52 is swung to theright, or clockwise, thereby reversing the previous movement of the pins 45 to cam the sleeve 39 and the slide to the right.

The convenience to the operator inthe manipulation of the device will be noted. Thus, an operator located in his usual position at the right side of the device, as illustrated in Fig. 3, controls the movement of the slide by movingthe lever handle 52 in the same direction as that Yin which the slide is to be moved. If desired means may be provided for maintaining the parts in any of In this instance, as shown in Figs. 3 and 5, such means may comprise a pair of friction plates 54 mounted in a transverse bore 55 in the lever 50 for engagement with the side walls of the recess 44, a spring A56 being interposed between the friction plates to urge them into yielding engagement with the walls of the recess. 1

`In the present device improved means is provided for backing up the workpiece and opposing any tendency thereof to yield in a generally radial direction to the force imposed on the work by the tool during a cutting operation. Referring to the illustrated embodiment (Figs. 3, and l6 to 9, incl.)

of the thrust-opposing means, the side of the body opposite to the cutting tool, has a bore 51 therein,`the axis `of which parallels the axis of the central bore` l1. A cylindrical supporting member 58 slidably and non-rotatably mounted in the bore 51 is adapted to be clamped therein in any position of axial adjustment. Thus, vthe body may be split or divided, as at 59, axially of the bore51 and provided with a clamping screw,

lll'traversing the division. The supportlng'member may conveniently be held against relative rotation by a key El interposed between the divided body sections and engaging a keyway 62 in 'the` a semi-circle. 'Ihe arcuate ribs of each pair have e substantially the same radius. The outer peripheral or circumferential face 61 of the rib is angular providing a rib of outwardly ytapering cross-sectional form. The approximately diametricalfaces of'the arm and rib are cut away, as at 68, on lan arc concentric with the face 61 rto provide clearance for a headed securing or clamping bolt 69 that extends between both arms 63 and throughv a'bore 10- in the Supporting member 58. 'The front faces of the arms are recessed, as at 'l|,to

receive the head of'the securing bolt. 'At its `rear end the supporting member 58 is recessed, as at 12,-to receive and forma seat for a spring 13 which bears againsta washer 14 held in place by the ybolt nut 15. The spring acting through the l engaging a Way 11` inthe supporting member to prevent misadjustmentl of the arms as the nut is tightened.

The front face of the supporting member has a recess 18 (Fig. 8) therein to receive the ribs 66 on the arms and the peripheral walls of the recess are complemental in shape to the tapering rib faces 61. Accordingly, the-arms when drawn into engagement with the supporting member,-

have a securely wedged, intertting relation therewith. .The arms have outstanding shoulders 19 thereon for engagement by the inner ends of backing-up screws 8l] mounted in lugs 8| on the body. n* Y f In the adjustment of the thrust-opposing means for any workpiece the supporting member 58 is, if necessary, flrstaxially adjusted by manipulation of the Screw 50 to locate the work-engaging rolls at a desired axial position relative to the work. The arms 63 are then released and' adjusted with respect to each other and to the supporting member 58 to t the work, these adjustments being about the axis of the bolt 59 as dethe recess 18. Thefspring 13 holds the arms in advanced to such position by an `operating mem-V ber which moves in the same direction as the tool slide. An improved feature of the tool slide mechanism is the positive clamping of thetool slide against other than an intended movement in all positions thereof. The thrust-opposing means may be readily and quickly adjusted through a wide range for proper engagement with workpieces of varying dimensions. I claim as myinvention:

1. In a turning tool of the character described,` the combination of a body having a recess adapted l to receive a rotary workpiece, a tool slide adapted to support a turning tool in position to project into said recess for cutting engagement with the workpiece and being supported on said body for adjustment transversely of said recess, an adjustl ing screw journaled in said body for rotation and for axial movement in a path parallel that of said slide, a nut rigid with said slide and threaded on A said screw, whereby said slide is adjustable by the movement of said nut along said screw inci-` dent to rotation of the latter, and means including an operating lever pivoted on said body for movement between alternate limit positions for shifting said screw and the slide connected thereto bodily as a unit between corresponding alternate limit positions of axial displacement of said screw.

2. In a turning tool of the character described,

the combination of a body having a recess adapted to receive a rotary workpiece, a tool slide adapted of the latter as an incident `to rotation of said device, and means including an operating mem.

ber movably mounted on said body for shifting said device and the slide connected thereto bodily as a unit and holding such unit against displacement from `the position to which it is moved by said operating member.

4. In a turning tool of the character described,

the combination of a body, a toolslide thereon,` an adjusting screw journalel in said body `for rotation and for axial `movement ina path paralleling that of said slide, a nut rigid with Vsaid slide and threaded on said screw, whereby said slide is adjustable by the movement of` said nut along said screw incident to rotation of the latter, a pair of pins having tapering cam noses, means l connected with, said adjusting means having `recessestherein provided with complemental surfaces engageable `by said noses, and means for moving one of said pins into its associatedrecess while moving the other of said pins out of `its i Vcorresponding recess whereby the engagement between the complementalsurfaces is effective to shift said adjusting screw andslide bodily as a unit.

. 5.\In a turning toolof the character described, the combination of abody, a tool slide thereon.,

. an adjusting screw journaled in said body for 40having recesses therein provided with ccmpleto supporta turning tool in position to project i into said recess for cutting engagement with the workpiece and being supported on said body for adjustment transversely of said recess, an adjusting screw journaled in said body for rotation and for axial movement in a path paralleling that of said slide, a nut rigid with said slide and threaded 0n said screw, whereby said slideis ad-` justable by the movement of said nut along said screw incident to rotation of the latter, an operating lever pivoted on said body for movement between alternate limitpositions, means includl ing coacting cam i devices respectively connected to said screw and operable by said lever for shifting said screw and the slide connected thereto bodily as a unit between alternate limit Positions i of axial displacement of said screw in response to corresponding movement of said lever, and means 4for restraining said lever against movement by the reaction thrust of the work on the tool imparted to such lever through the connections back to the same from said slide.

3. In a turning tool of the character described, the combination of a body having a recess adapted to receive a rotary workpiece, a tool slide adapted to support a turning` tool in position to plOJ'eCt into said recess forcutting engagement with the workpiece and being supported on said body for adjustment transversely of said recess, `a rotary adjusting device journaled in said body for rotation and for axial movement in a path paralleling that of said slide, means threadably connecting .said device and said slide for adjusting movement rotation and for axial movement in a `path paralleling that of1 said slide, a nut rigid with said slide and threaded on said screw,rwhereby said. slide is adjustable bythe movement of said nut along said screw incident to rotation of the latter, l a pair of pins having tapering cam noses slidably Amounted in said body generally transaxially of l saidscrewand projectingtoward` the latter, a non-rotatable sleeve telescoped over saidscrew, means interconnecting said screw and sleeve for axial movement of the two in unison, said` sleeve mental surfaces engageable by said noses,` and means .including an operating lever rockably mounted on said body and frictionally restrained against inadvertent displacement for moving one `of said pins into its associated recess while moving the other of said pins out of its corresponding recess whereby the engagement betweenthe complemental surfaces is effective' to shift said adjust..

ing screw and slide bodily as a unit. i 6. Ina turning tool of the character described,

`the combination of a body, a tool slide thereon.

axially shiftable adjusting means connected with said slide for 'determining an operative position thereof, said adjusting means including a part having an inwardly tapering notchtherein, and cam means disposed off center with respect to said notch and movable into said notch to shift said adjusting means axially, the limit of such` shifting movement being determined by the `fully l `seated relation of said cam means and notch.

7. In a turning tool ofthe character described,

`the combination of a body, a tool slide thereon,

adjusting means connected with saidslide for plemental surfaces iseifective to shift said ad`- determining an operative position thereof,a pair of pins `having tapering cam noses, means co`n` nected with said adjusting means having recesses therein provided with complemental surfaces engageable by said noses, and means for moving one of said pins into its associated recess while movl `ing the other of said pins out of its corresponding recess whereby the engagement between the comjusting means and slide,`

' vIC'roa wcmEoN.

Images