Патент USA US2409164код для вставки
A2,409,160 E. SIRP WORK SUPPORT Filed June 29, 1944 4:a sheets-sheet 1 H6. E 4% 46 » /2 /3 3/ 4 43 4Z 34 E. slRP . . 2,499,16 wom: SUPPORT ` Filed June 29. 1944 _ 3/1, / laß ` L! /0 , V 33 ' 43 ` / 9 2 sheets-'sheet .2 ' 3// Y ` i 4a H65 /1/7 f'. slp/D ATTO/@V57 2,409,160 Patented Oct. 8, 1946 Unirse srres- PATENT orifice f WORK SUPPORT Emil Sirp, Downers Grove, Ill., assigner to West kern Electric Company, Incorporated, New York, N. Y., a corporation of New York Application June 29, 1944, Serial No. 542,760 6 Claims. l This invention relates to work supports and more particularly to a work supporting jig for mounting work upon the bed of a machine tool during machining operations. The invention is particularly useful inthe manufacture of anode inserts Íor'magnetron type vacuum tubes. Such an insert may comprise an annulus of copper with an outside diameter of (Cl..77-62) will more fully appear from the following de tailed description, taken in conjunction with the accompanying drawings in -which Fig.. 1 is a plan -view of a work supporting jig embodying the features of this invention; Fig. 2 is a longitudinal vertical vsectionV taken on the line 2-2‘ of Fig. 1; j 1 'r‘ . Fig. 3 is a side view of the two jig plates carry ing the drill guides, the aligning `pin and an .anode .595", in which twelve apertures of .079" diam eter are to be drilled in concentric arrangement 10 insert to be drilled, shown in separated .relation with respect to a preformed central aperture of .204” diameter, from which twelve preformed slots of .021” in width extend radially, each of which is to communicate with one of the smaller before assemblage; . . Fig. 4 is a transversevertical irregular section taken on the linell-diof Fig. l; Fig. 5 is an `enlarged fragmentary*transverse> vertical section taken Aon the line 5-«5» of ‘.Fig., 15 apertures which are to be so located that the 1; and . longitudinal median lines of the slots coincide Figs. 6 and 7 are enlarged fragmentary bottom with the axes of the central and smaller aper and plan views of the upper and lower jig >plates. tures. Great difilculty has been encountered in taken on irregular lines ¿lì-_6 and 'If-l, 'respec-> so locating the smaller apertures to be drilled due _ . . , ‘ ,. to the minute dimensions involved and the high 20 tively, of Fig. 2. Referring to thedrawings, particularlyitoyFigs. degree of accuracy required in aligning the small 1 and 2, the work supporting jig zin the present' er apertures with the slots. embodiment comprises two rectangular shaped An object of the present invention is to pro steel plates I0 and II providedateach end Vwitni vide a practicable and eñicient work support for 25 a pair of feet I2 for supporting the :assembled handling work of the nature described above. jig when in use upona bed >of a drill press. (not. In accordance with the above object, the'pres shown) »or in supporting each plate when the jigy ent invention, in one embodiment thereof, as ap plied to a drill jig for supporting an anode in sert of the type described hereinbefore, for use in magnetron vacuum tubes, comprises two aligned plates between which the insert is clamped, the inner opposed faces of the plates having shouldered apertures for receiving in iiush relation two annular shaped drill guides having their inner opposed faces abutting the outer is disassembled. In the latter case, the plateV I0 is rotated 180° from the position shown `in Figs. 1 and 2. The plate I0 carries at each end inter mediate the feet I2 a vertical aligningipin |13, the pins being arranged to freely enter» _apertures I4 Vsimilarly «arranged in the plate II. Also carried by theplate .-Iil lat its lef-t end (Figi) is‘a , stop or gauge member I'I, which `maintainer-he space between the'assembled plates at such sendA parallel faces of the insert. The drill guides are of the >assembled plates to the thickness lof an each similarly provided with a series of drill guld anode insert I8 interposed îbetween the :plates ing apertures arranged on centers and having adjacent 'the opposite ends thereof. The upper diameters corresponding to the apertures to be end face of the insert I8 abuts the lower `face of drilled in the insert, the central apertures of the the plate I0, in which is carried an :annular drill guides having a dimension similar to that of the guide I9 flush with such face of the plate, while central aperture of the insert. Formed in the the lower face of the insert abutsthe upper end peripheral walls of the central apertures in the face of an annular drill guide '2,0 carriedin and guides are radially extending short slots arranged on centers corresponding to the slots in the in 45 flush the plates with the I0 and upper I.I face are parallel of the plate whenAI the I.4 ljig is sert. After a preliminaryaligning of the drill assembled and in use. For the purpose .of limit guide slots with those of the insert, an aligning ing any unparallelism of the plates yIll and :II pin formed with radially extending teeth cor which may occur, the plate Iû carries adjacent responding in number and arranged to fit closely into the aligned slots of the drill guides and in 50 each end a pair lof pins 2I, which 'normally are spaced a few Athousandths of .an inch from Vthe sert is inserted to finally align the slotted parts. upper face of the plate II (Fig. 2).' f Means including a cam lever is provided for re ‘The anode insert I8, as hereinbefore described, taining the jig plates, drill guides and'insert in comprises an annulus of copper 'in which is tobe operative assembled relation. Other. objects and advantages of this invention 55 drilled, in the present example, vtwelve aperturesl 2,409,160 . y _ 4 3 24 (Figs. 1, 5 and 7) arranged concentrically rela tive to a preformed central and larger aperture 25, from which radially extend twelve preformed slots 26, each of which is to communicate with to its full line position (Fig. 1), enters the cam slot 52 of the post 49 and in cooperation there with clamps and holds the parts together. To assemble the jig plates I0 and II, each car rying its respective drill guide I9 and 2U retained one of the apertures 24 on a line coinciding with Ci the axes of the apertures 24 and 25, the diameters therein in the manner previously described, the of the anode, 4central and smaller apertures and aligning pin 34 and an anode insert I8 accurately .the communicating'slots vbeing of the' dimensions previously mentioned; ` ‘ Formed in the plates I9 and II are aligned shouldered apertures 21 and 28 (Figs. 5, 6 and 7) for receiving the drill guides I 3 and 20, respec tively, the apertures having their outer smaller ends flared for clearance purposesf, »Each of the drill guides is similarly formed with fa series of drill guiding apertures 3I arranged on centers and having diameters corresponding to the apertures 24 to be drilled in the anode insert I8.V Also formed in each of the drill guides I9 and 20 are angularly positioned and clamped between the plates, the following procedure may be employed: Referring particularly to Fig; 3, wherein the Darts are shown in separated relation, .the align ing pin 34 may be flrst inserted in the aperture 32 of the drill guide 20 with the ribs 35 of the pin riding snugly into the slots 33 of the guide. Thereafter, the anode insert I8 is threaded onto the pin 34 with the pin ribs 35 snugly ñtting the slots 26 of the insert. The plate I0 is then aligned with the plate II and lowered into position Vto thread the aligning pin 34 through the aperture central apertures 32 having radially extending 20 32 of the drill guide I9 in the manner of thread relatively short slots 33 arranged on centers cor ing the pin 34 into the aperture 32 of the drill responding to and similar in width `to the slots guide 20, previously referred to. At the same 26 of the anode insert I8. In order to accurately time, the post 49 is threaded through the aligned position .the drill guides I9 and 29 with respect aperture in the plate I0. As thus arranged, the to the insert I8 to be drilled so that the axes of 25 drill guiding apertures 3I of the guides I9 and 20 the apertures 24 to be drilled in the insert I8 will will be in accurate axial alignment and the slots coincide with the median line of the preformed 26 of the anode insert I8 to be drilled will be accu slots 26 thereof, an aligning pin 34 is provided having a series of longitudinally extending teeth rately centrally aligned on lines passing through the axis of the apertures 24 and 25 of the insert. or ribs 35 arranged on centers corresponding to 30 After rocking the cam lever 54 to its full line posi the slots 33 of the drill guides I9. and 20 and the tion (Figs. l and 4) to clamp the parts together, slots 26 of the insertIB and in which they snugly the anode insert I8 is ready to have the apertures fit when the jig and insertare assembled for drill 24 drilled therein by the drill 4I, the jig being ing operations, which assemblage will be pres mounted upon the bed of a drill press in any suit ently described. To facilitate the entrance of the 35 able manner. pin 34 and its ribs 35 into the apertures 32 and 25 What is claimed is: and slots 33 and 26, opposite ends of the pin and 1. A work support and tool jig for guiding a its ribs are bevelled, as indicated at 38, and the tool to a predetermined point on a work piece opposite ends of the walls of the slots 33 are also having a preformed aperture and a slot extend bevelled at 39. » ‘ 40 ing therefrom with which said point is to be ac The apertures 3| of the drill guide I9 are curately located comprising apertured supports bevelled atl40 for guiding avdrill, indicated in bro between which a work piece is supported, adjust ken loutlne at 4|, into the aligned aperture. A able tool guides between said supports abutting notch 42 in the periphery ofeach of the drill opposite faces of a work piece, each of said guides guides I9 and 20 and cooperating pins 43 ñxed in having an aligned central aperture and alignable the plates I 0 and I I serve to initially arrange thetool guiding apertures, said central apertures drill guides in substantially their desired posi having alignable slots extending therefrom and tions, the notches being of such dimensions that similarly located relative to the tool guiding aper the guides will rotate slightly in one direction ture as said work piece slot is to said point, andl or the other when the pin 34 is mounted in posi 50 an aligning member enterable into said central tion to ñnally accurately align the guides with the apertures of the guides and work piece and hav insert I8 to be drilled. ‘ To retain the drill guides ing a peripheral projection fitting into the align I9 and 29 in the plates I0 and II, respectively, a able slots of the guides and work piece. pair of diametrically `'opposite screws 46» are '2. A work support and tool jig for guiding a threaded into each of «the plates until the inner 55 tool to a predetermined point on a work piece annular face of the heads of the screws abut the having a preformed aperture and a slot extend adjacent face of the plates. In order to facilitate' ing therefrom with which said point is to be the escape of .the drill shavings or chips and also accurately located comprising separable supports in the cleaning of the jig, the drill guide, upon between which a work piece is supported, an its lower face, is centrally counterbored at 41 and 60 nular tool guides rotatably carried in inner op notched therefrom to its periphery at four equally posed apertured faces of said supports and abut spaced points 48 (Figs. 5 and 6) . ting opposite faces of a work piece, each of said After complete assemblage of the jig and anode guides having aligned central apertures and insert I8 to be drilled, as shown in Figs. 1, 2 and 5, alignable tool guiding apertures, said central the parts are clamped together by the-following 65 apertures having alignable slots extending there means. Fixed to the lower face of and extending from and similarly located relative to the toolA through an aperture in the plate II (Fig. 4) is a flanged post 49 formed adjacent its upper end withï guiding aperture as said work piece slot is to said point, an aligning pin enterable into said central a horizontal cam slot 52. The plate III is pro-' apertures of the guides and work piece and hav vided with an aperture for receiving the upper 70 ing a peripheral projection fitting into the align end of the post 49, the bottom face of the cam slot able slots of the guides and work piece, and 52 being in thegplane 'of the >upper face of the means for releasably maintaining said supportsv plate I0. Pivoted at 53 tothe plate V.III is a Vcam and guides in clamping relation with the work lever 54 vhaving acamV face 55,.;which, when the lever» is rocked from _its _broken outline position 75 piece. . _ . _ i 3. A work support and tool jig-for guiding a 2,46%), ico 5 tool to a predetermined point on a Work piece having a preformed aperture and a slot extend ing therefrom with which said point is to be ac curately located comprising separable supports between which a Work piece is supported, means for maintaining said supports in accurate align ment, tool guides carried in and capable of slight rotation in inner opposed apertured faces of said supports and abutting opposite faces of a Work piece, means for predeterminedly limiting such rotation of said guides, each of said guides hav ing aligned central apertures and alignable tool guiding apertures, said central apertures having alignable slots extending therefrom and simi larly located relative to the tool guide aperture as said work piece slot is to said point, an align ing pin enterable into said central apertures of the guides and Work piece and having a periph eral projection fitting into the alignable slots of the guides and work piece, and means for re- ~. leasably maintaining said supports and guides in clamping relation with the Work piece. 4. A Work support and tool jig for guiding a tool to predetermined points on a Work piece having a preformed aperture and slots extend ing therefrom with which said points are to be accurately located comprising separable supports between which a Work piece is supported, means 6 a a series of alignable slots extending therefrom and each similarly located relative to the tool guiding apertures as said Work piece slots are to said points, an aligning member enterable into said central apertures of the guides and Work piece and having a series of peripheral projec tions fitting into the alignable slots of the guides and Work piece, and means for releasably main taining said supports and guides in clamping re lation with the Work piece. 5. _A Work support and tool jig comprising a plate having an aperture, a work piece support freely rotatably mounted for limited rotation in said aperture and having a tool guiding aper ture, means carried by said plate cooperating with a formation on said support for predeter minedly limiting the rotation of said support, and a member having peripheral formations engage ab-le in alignable slots formed in central aper tures in said support and the work piece to main tain said support and Work piece in predeter mined alignment. 6. A Work support and tool jig comprising apertured plates between which a Work piece is« supported, Work piece supports freely rotatably lmounted for limited rotation in the apertures of said plates abutting opposite faces of a work piece and having alignable tool guiding aper tures, means carried by said plates cooperating for maintaining said supports in lateral, longi tudinal and parallel alignment, tool guides rotat 30 with formations on said supports for predeter minedly limiting the rotation of said supports, ably carried in inner opposed apertured faces of said supports and abutting opposite faces of a work piece, means on each of said supports co operating With peripheral notches of said tool guides for permitting slight rotary movement of said supports, each of said guides having aligned central apertures and a series of alignable tool guiding apertures, said central apertures having and a member having peripheral formations en gageable in alignable slots formed in central apertures in said supports and the Work piece to maintain said supports and Work piece in prede termined alignment. EMIL SIRP'.