Патент USA US2409707код для вставки
Oct. 22, 1946. Y J, |__ REPP'A ' 2,409,706 ATTACHMENT FOR DRILL PRESSES OR THE LIKE Filed Sept. 22, 1944 2 Sheets-Sheet l i :3 _ J/zl ,/ w - 23 . “m; i7; 20 2a a 1;} >2 3/ 1: , ’ 6 B o ‘max/m ‘z. 28 , » Joseph! A. Esp/M. 0a. 22, 1946. 4 J. L. REPPA ' 2,409,706 ATTACHMENT FOR DRILL PRESSES OR THE LIKE‘ Filed Sept. 22, 1944 2 Sheets-Sheet 2 I K/ /% Patented Oct. 22, 1946 2,409,706 UNITED STATES PATENT OFFICE 2,409,706 ArrscnMENr ronrldillitillpln BRESSES on THE ' ' ‘ Joseph I]. Rcppa, Chicago, n1. " Application September 22, 1944, Serial No. 555,211‘ 6 Claims. ‘ (01. 77-63) 2 1 My invention is in connection with rotary spindle machines for drilling, tapping, or per forming other work on work pieces, and relates particularly to an improved and simpli?ed at tachment for such machines for aligning and holding the work pieces during the rotary or Figure 1 shows a conventional type of drill press comprising the base ID with a cylindrical column ll rising therefrom and supporting at its upper‘ end the drill press head assembly I2 in which the tool supporting spindle I3 is axially shiftable and is rotatable by the motor M, a work table I5 being supported on the collar [6 vertically axial movement of the tools. An important object of my’ invention is to pro-,' adjustable on the column I I in a well known vide a simple attachment which may be readily manner. ‘ applied to existing drill presses or the like and 10 My improved attachment comprises a down which is adjustable for the size and shape of turned arm ll extending from a clamp member work pieces and for guiding the work pieces ac l8 which,_ with the complementary clamp mem curately into proper position for the performance ber Hi,’ will adjustably clamp the attachment to of work thereon and to hold them against rotary the column I! above the work table l5. At its or lateral" displacement while the work is being 15 outer end the arm I1 carries a head 20 which is performed thereon and‘while the tools are being withdrawn. ‘ 1 Another object of the invention is to provide a simple attachment which can be readily applied to the column of a drill press or the like above a work supporting table on the, column to hold the work pieces in proper’position on the table for operation thereon. ' r A further object is‘ to provide an attachment shown in rectangular plate form and which may be integral with the arm ll, this plate being parallel with the work table I5. The plate has the passageway 29 therein through which the tool‘, such as, a drill X supported by the spindle 13; may pass for application to work pieces held between'the plate and the table. Adjustably mounted on the head 20 are a plurality of aligning and holding elements such in the form of an arm adjustably mounted on 25 as A and B, the elements A being shown as of the column above the work supporting table and terminating in a head parallel with the table and provided with adjustable abutment members for de?ning a recess for receiving the work pieces and for holding them against lateral displace Si) merit on the table during drilling or- other oper ation thereon. Another object is to provide an attachment having a plurality of elements thereon adjust able to de?ne a recess or space into which work pieces may be inserted in proper position on the work table for drilling or other operation and to be rigidly held against displacement during such operation. L-shape and the elements B as to T-shape. Each element comprises a rectangular supporting bar ‘22;, and these bars are received and are adjust able in rectangular channels 23 shown as extend ing transversely across the bottom of the head 23. In alignment with these channels the head has, the slots 2% through which screws 25 ‘are extended for engagement in the threaded holes 26 in the bars, so that after adjustment of the bars they may be rigidly held in set position. I have shown the attachment set for receiving and. holding work pieces W in the form of rectangu lar plates which are to be drilled: The bars of the aligning and holding members A terminate at The above referred to and other features of my invention are shown embodied in the struc their outer ends in aligning ‘and holding ?ngers ture on the drawings; which drawings: from at right angles, while the aligning and hold?‘ Figure l is a side elevation of a drill press with my attachment applied thereto; ' ' Figure 2 is an enlarged section on plane II-QII ‘ of Figure 1; Figure 3 is an enlarged section on plane III-I'll’ of Figure 2; ' Figure 4 is an underside view of the end‘of the attachment; Figure 5 is a section on plane V—:V of Figure 4'; Figure 6 is an enlarged perspective view of one form of guide and abutment ?ngers; and Figure 7‘ is a perspective of another form of guide and abutment‘ elements. 21 which depend therefrom and extend there ing elements B terminate at their outer ends in ?ngers 28 depending therefrom and extending crosswise thereof. The bars for the ?ngers 21 are shown as slidable in the outer channels 23 with the ?ngers extending toward each other for engagement with one side of the work piece, while the bars for the ?ngers 28 are in the intermediate channels for engagement of these ?ngers with the opposite side'of the work piece. The setting of the holding and aligning elements is such that when the attachment is positioned over the table I 5‘, the work piece may be moved into position on’ the table between the ?ngers for transverse ' ' 2,409,706 4 channels in its lower side and having slots therethrough in alignment with said channels, bars in said channels terminating at their ends in ?ngers, screws extending through said slots for engagement with said bars for setting of said bars in adjusted position with their ?ngers forming aigning abutments for side edges of a work piece to hold the work piece against trans alignment thereof for the drilling operation. For aligning the work piece longitudinally for the desired drilling operation thereon an abutment element 29 is provided. This element is shown in the form of a cylindrical bar which is received at its inner end in the transverse bore 30 pro vided in the arm ll adjacent the head 26. The outer end of the bar 29 is reversely bent to pro verse displacement during a drilling or other vide a foot 3| against which the inner edge of operation thereon, said arm having a transverse the work piece will abut when it is in proper bore therethrough adjacent said head, a cylindri longitudinal alignment for the drilling opera cal bar received at one end in said bore and tion. The inner portion of the bar is parallel having its other end bent to provide an abutment, with the head 20 and the bar can be rotated and shifted axially in the bore 30 to bring the foot end- __ said bar being rotatably and axially adjustable in said bore to position said abutment for en 3| thereof into the proper abutment position for gagement by the end of a work piece when in the work piece, and then the bar is locked in the serted between said ?ngers whereby said work set position as by means of a set screw 32 thread piece will then be in the desired position for ing through the arm‘ l'l. Now, work pieces may drilling or other operation and will be rigidly held be inserted one after the other into position on against displacement during such operation, and the table l5 between the holding and abutment means for holding said abutment bar in its set elements for drilling thereof at the desired point, position. and during the drilling operation the work pieces 3. A device for centering a workpiece on a drill will be held against displacement and also while press table and holding it against displacement the drill or other tool is being withdrawn. A' multiplicity of work pieces may thus be quickly 25 during machining, comprising an arm swingable 0n the drill press post and secured thereto above and accurately and safely drilled or otherwise the table, said arm carrying a ?xed head at its free end to be applied over a workpiece on the table, a plurality of bars endwise slidable in said operated on. The drills or other tools, after pass ing through the work pieces, will enter passage way 33 usually provided in the work table I5, through which passageway the material re 30 head in parallelism, said bars having depending moved from the work pieces will drop. All the aligning, holding and abutment elements for the work pieces are mounted on the attachment I ‘l which may be readily swung out of service position when its services are not required and - which can be readily swung into service posi tion to cooperate with the table 15 to receive and hold the work. Although I have shown an attachment adapted for holding work pieces of rectangular shape, it is evident that, by changing the shape of the ?ngers engageable with margins of a workpiece on the table and adapted to rest on the table, the horizontal lengths of said ?ngers being greater than the widths of said bars, some of said bars being reversed with respect to others to position some of the ?ngers against one margin of the workpiece and other ?ngers against an opposite margin of the workpiece, another bar mounted in said arm and endwise movable therein at right angles to the direction of movement of said ?rst ' mentioned bars to engage a margin of the work aligning and holding elements, the attachment piece in substantially ninety degree relation with will serve to hold work pieces of different shapes or contours. Other changes and modi?cations could also be made without departing from the scope of my invention as de?ned in the appended claims. respect to the engagement of the ?ngers of said ?rst mentioned bars with the workpiece. 4. A work holding attachment for a drill press I claim as my invention: 1. A holding attachment for drill presses or the like comprising an arm having clamping means at one end for adjustable clamping to the drill press above the drill press work support and terminating in a head, said head having transverse channels in its lower side and having slots therethrough in alignment with said chan nels, bars in said channels terminating at their ends in ?ngers, screws extending through said slots for engagement with said bars for setting of said bars in adjusted position with their ?ngers forming aligning abutments for side edges of a 60 work piece to hold the work piece against trans verse displacement during a drilling or other operation thereon, said arm having a transverse bore therethrough, and a bar received at one end in said bore and at its other end providing an abutment foot for engagement by one end of a work piece when inserted between said ?ngers whereby the work piece will then be held on the work support against displacement during drill or the like having a work supporting table, com prising an arm having clamping means at one end for adjustable clamping to the drill press above the supporting table and having a head at the oher end overlying the supporting table, means carried by said head for engaging two opposite sides of a workpiece on said table, said means comprising a plurality of parallel endwise movable bars mounted in said head and movable transversely thereof, the outer ends of said bars terminating in ?ngers downturned with respect to the bar lengths and with the horizontal lengths of said ?ngers greater than the horizontal widths of said bars, said bars being so disposed in said head that the ?nger of at least one of said bars will engage one side margin of a workpiece and the ?nger of at least one other bar will en gage the opposite side margin of the workpiece, and means for securing said bars to said head with their ?ngers in engagement with the side margins of the workpiece, said ?ngers resting on said supporting table when said attachment is set for use. 5. A work holding attachment for a drill press ing or other operation thereon. 70 or the like having a Work supporting table, com 2. A holding attachment for drill presses or the prising an arm having clamping means at one like comprising an arm having clamping means end for adjustable clamping to the drill press at one end for adjustable clamping to the drill above the supporting table and having a head at the other end overlying the supporting table, press above the drill press work support and ter minating in a head, said head having transverse 75 means carried by said head for engaging the op posite sides of a workpiece on said table in hold head and movable transversely thereof, the outer ing engagement, means for providing a stop to ends of said bars terminating in ?ngers down engage an end of the workpiece on the supporting turned with respect to the bar lengths and with table, said last means comprising a rod mounted the horizontal lengths of said ?ngers greater for axial and rotative movement in said arm and than the horizontal widths of said bars, said having its outer end reversely bent toprovide a bars being so disposed in said head that the foot to engage the adjacent end of the workpiece ?nger of at least one bar will engage one side which is supported on said table and underneath margin of the workpiece and the ?nger of at said head, rotative movement of said rod in said least one other bar will engage the opposite side arm permitting vertical adjustment of its foot 10 margin of the workpiece, means for securing said with respect to the height of the workpiece, and bars to said head with their ?ngers in tight en means for securing said rod in adjusted position gagement with the side margin of the workpiece, in said arm. means for providing a stop to engage an end of the workpiece on said table, said last means com prising a rod mounted for axial and rotative 6. A work holding attachment for a drill press or the like having a work supporting table, com prising an arm having clamping means at one end for adjustable clamping to the drill press above the supporting table and having a head at movement in said arm and having its outer end its other end overlying the supporting table, on said table underneath said head, and means means for engaging two opposite sides of a work for securing said rod in adjusted position in said piece on said table comprising a plurality of parallel endwise movable bars mounted in said arm. reversely bent to provide a foot to‘ engage the adjacent end of the workpiece which is supported JOSEPH L. REPPA.