US1875910A - Dual control for universal worktables - Google Patents

Description

Sept. 6, 19.32.

w. F. ZIMMERMANN DUAL CONTRQL FOR UNIVERSAL WORKTABLES Filed Oct 8. I92? 3 Sheets-Sheet l Sept; 6,-1932. w. F. ZIMMERMANN 1,875,910

DUAL CONTROL FOR UNIVERSAL WORKTABLES Filed Oct. '8'. 1927 s Shets-Sheet 2 r--- fl.

11 .4. E: 5/ 72 I p H F 74 Tl i; 75 76 l al 68 l I: I 69 a x L Z 3. avwewco'c 331:; emu/" seiitw 1932- w. F. ZIMMERMANN 1,875,910

DUAL CONTROL FOR UNIVERSAL WORKTABLES Filed Oct. 8. 1927 3.Sheets-Sheet 3 20 justing'the table along a manual means located on the head of the adjusting I ling thework table.

Patented Sept. 6, 1932 warren stares PATENT OFFICE WILLIAIE F. ZIMMERMANN, OF MAPLEWOOD NEW JERSEY, ASSIGNOR TO GOULD & EBEBHARDT, F NEWARK, NEW JERSEY, A CORBORATION 0F NEWJERSEY DUAL CONTROL'FOR UNIVEBSAL WOR KTABLES Application filed October 3, 1927. swarm. 224,990.

The invention disclosed herein relates to certain improvements in shaping machine tools and in its more specific aspects to a dual control means incorporated in a shaper having a universal work table thereon,the dual control means being designed to translate the universal table along the rail and having features whereby'it may be controlled from a plurality of conveniently positioned points.

The type of the machine tool referred to consists in general of a frame having a horizontally reciprocating rain mounted thereon carrying a cutting tool at its outerendi The frame also has mounted thereon for, vertical movement a cross rail which in turn supj screw shaft rotatably mounted longitudinally ports thereon the translatable work table.

In machines of this type the various controls have included means located at the outer end of the cross rail for manually adthe cross rail and also reciprocating ram for vertically the cutting tool thereon;

' In machining certain surfaces it is com- 5 mon practice for the operator to perform each of the above mentioned adjustments simultaneously. During such adjustmentsit is necessary for the operator to maintain a close watch on the work and the relation of the cutting tool thereto.

chines, it has been found difficult to perform each of the above functions since the position of the adjusting means has been such that the operators view is considerably obscured or that he must assume a very uncomfortable and tiresome position and one which could not be maintained for any great period of time. Attempts have heretofore been madeto provide an auxiliary table adjusting means at the outer end of shaper tables but such means were inconvenient to operate in that when one adjusting means was operated the other one was required to be locked. This was troublesome and therefore often not resorted to with the result that it to a large extent remained a single control. means;

step

as in the preceding devices. .7

The invention hereln disclosed is designed toovercome these difiiculties and 1s espec ally 50. adapted for use .in combination with work- In former ma-.

tables having a plurality of adjustments. 5

commonly known as a universal work table. The provision of dual control means in a table of this type presents problems not encountered in a simple rigid table mounted for translation only. The universal work table includes a saddle mounted on the cross rail, a main work carrier mounted to be swiv elled about any axis transverse, to the cross rail and having incorporated on onesurface' thereof, which in certain adjusted positions of the table is the upper horizontal surface, an auxiliary tiltable fixture adapted to carry the work.

The novel dual control means consists of a" I-n machines of this. type it isoften desirable to supply the shaper tool with an auxiliary support comprisinga bracket adapted to be secured to the outer end of the work table. One of the features of this invention includes the idea of so arrangingthe concentric ad- 7 justing shaft that it maybe operated easily through a slot in the supporting bracket which slot also serves the purpose of sup-- porting a clamping bolt therein for securing the bracket to' the universal table in its verticaliy adjustedpositions.

The adjusting features-on a universal worktable include means for-sWivelling the'table, means for tilting theauxiliary table and the above mentioned means for adjusting the table along the cross rail, The arrangement in this invention is such that eachof these adjusting means is conveniently located adjacent each other and operable fromtheouter end of the work table 1 V The-embodiment of this invention as disclosedin the present application'includes a; type of rail and table construction which is peculiarly Well adapted for the incorporation therein of the type of dual control means forming a primary feature of this invention.

This table support and guide 'means are arranged in a novel manner such as to eliminate the bowing and distortion of rails which occurs in the prior constructions and makes provision for anopening extending the length of the rail adapted to receive elements of the dual control mechanism without sacrificing any of the features of rigidity of construction in the cross-railsoughtL H I Other objects and advantages will be in part indicated in the following description andin part renderedap-parent. therefrom in connection with the annexed drawings.

To enable others skilled in the art so fully to apprehend the underlying features hereof that they'may embo-dy'th-e same in the Various ways contemplatedfby this inven-tion draw ings depicting a preferred typical construction have been annexed as a 'part of. this disclosure and, in such drawings, like char- 7 acters ofv reference denote corresponding arts throu hout all the Views of which 7 Figure 1 is a vertical side View of a shaper showing the invention, incorporated therein.

F ig. 2 is a front elevational view looking from the left in Fig. 1. Fig. 3 is .a vertical cross sectional View of the universal table showing the adjusting means and an outer supporting bracket omitted in Fig. 1. Fig. 4 is a portion of a horizontal section taken through'the horizontaladjusting means for the table and Fig. 5 is an enlarged front view of the table showing manyof the details of construction not found in Fig.12. i

The invention is shown incorporated in a shaper" having the general features consist ing of a frame 10, a'rani 11 mounted for horizontal reciprocation thereon',.the outer end of the ram having a vertically adjustable slide 12 thereon carrying the cutting tool 13, V such vertical adjustment being accomplished. by the screw shaft '14 rotatable by means'of the hand'lever 15.

The forward face of the framehas mounted for vertical movement thereon the cross rail 16'adjustable in a well known means including the vertical screw shaft 17. The

cross rail slides in the vertical guides 18 and is clamped in position by clamping bolts projecting through the vertical slots 19 in a conventional mannerl.

A saddle 20 is translatably secured on the.

cross rail 16 which saddle in turn carries the work table 21 having an auxiliary outer support 22 therefor. The work table 21 is pro-.

vided with two working faces 23 and 24, the

working face 24 including a tilting element.

25 having a vise 26 secured thereonas shown in Fig. 1 or it isobvious the work maybe directlyassembled on the tilting element 25.

The conventional elements include a gear train 27 adapted to reciprocate the ram 11 "and" through suitable mechanism, indicated generally at 28," to impart'an intermittent rotary motion to the screw shaft 30 mounted in the cross rail.

As shown most clearly in Fig. 3 the saddle 20'has integral therewith or secured thereto a frame portion 31 having a projecting hub or'drum portion 32 upon which the table frame 33 is rotatably mounted. The rotation is accomplished by means of the large gear 34 formed on the stationary member 31 and having in. mesh therewith the worm member 35 rigid with or secured to the bevel gear 36.

The worm and'bevel gear are mounted on a shaft in the frame 33. Rotation of the bevel gear 36 is accomplished by means of the adjusting shaft 37 mounted in the rotary portion of the table by means of the bearings 38 and 39 and having at its innerend the bevel gear40 meshing with the bevel gear 36. The

outer end of the shaft has a squared portion 41. adapted to receive a manually operated crank. The rotary table frame 33 is secured on the hub 32by means of the bolts 42 threadably engaged in the segmental plates 43 shown in dotted lines in Fig. 5 and as shown in Fig. 3 located within the T-shaped openings 44 which T-shaped openings are formed on a radius concentric with the drum 32.

The means for tiltably supporting the plate 2 5 andsecurin it in adjusted positions include the upstanding journal brackets45 and 46 adapted to support the rigid shaft 47 which inturn also carries the table element 25'. The table element 25 has fixed thereto the bracket 48 provided with a gear segment 49 at the inner end thereof adapted to be en-' gaged by the. worm 50 secured to the shaft 51'mounted in the rotatable portion of the table and having at its outer end the squared portion 52 adapted to receive a manually on erable' lever similar to the squared end 41. The tilting table element 25 is clamped in its ad usted positions by means of the clamping bolts 53 secured in the journal brackets 45 and 46 and projecting through the are shaped concentrically mounted within the drum 32 and the table is the shaft 62 secured against outward movement by any simple means such as the collar 63 fixed thereto and,

bearing against the bushing'64 secured with- 1n the plate 56. The novel dual adjustable means for translating the tablealong the cross rail include the screw shaft 30 rotatably' mounted in the end bracket-members 66 and As shown most clearly in 67 of the cross rail. A squared end 30 is provided on the outer end of shaft 80 for the reception of a hand crank. Engaging with the screw shaft is the nut 68 fixed against rotation and longitudinal movement in the bracket 69 by means of the pin 70 which bracket 69'is secured to the saddle portion of the table and is adapted to move along the screw shaft in the opening 71 as the screw shaft 30 is rotated. The adjusting shaft 62 is connected thereto by means of the bevel gearing 72 and 73, the bevel gear 73 being fixed to the collar 7 4 which in turn is splined to the shaft 30 by means of the key 75. The outer end of the shaft 62 has a squared portion 76 adapted to receive a crank inserted through the vertical slot 77 of the supporting bracket 22.

The table may be rotated about its axis in the manner heretofore described and secured in the position shown in Fig. 1 or that shown in Fig. 2 or an intermediate position similar to that shown in dottedlines in Fig. 2. Such rotation of the table however does not move the adjusting shaft 62 which remains stationary and concentric therewith and with its outer end projecting to a point adjacent the slot 77 such that an actuating crank may be applied therethru. The slot 77 also receives the clamping bolt 77 cooperating with the plate 77 to secure the table in its vertically adjusted positions.

The advantages afforded by the dual control may be seen by inspection of Figs. 1 and 2. The operator, with the present arrangement, ordinarily stands at the right of the table as shown in Fig. 2 with his right hand grasping the lever 15 and using the left to actuate the shaft 62. In such a position the operator would have a constant and an unobstructed view of the work mounted on the table. This is in great contrast to the uncomfortable position the operator would be required to assume if it were necessary to actuate the shaft 30 with the left hand ad-' j acent the outer end of the cross rail. It is clear also that the operator would not be able to stand close to the work especially if the table were moved to a position near the left end of the rail as shown in Fig. 2. These advantageous features are accomplished in a universally adjustable work table without sacrificing any of the features of its adjustability as previously described. As another point in connection with the dual control which should be noted is the specific construction of the connection between the two adjusting means whereby they may be alternately actuated without the necessity of resorting to locking the particular one which is not being immediately utilized.

An ususually rigid and strong supporting means for a heavy work table of this type is required and novel means therefore have been conceived and made adaptable to cooperatewith the dual actuating means. Such a construction consistsv of a cross rail having the lower bearing plate surface 78 against which the lower end of the work table constantly bears and an upper guiding means consisting of a projecting ledge member 79 having integral therewith the overhanging or projecting portion 80 which in turn has integral therewith or rigidly secured thereto the plate 81 by means of screw bolts 82. Within the opening formedby these elements a projecting portion 83 of the Work table extends having the inner upturned end 84 adapted to closely fit in the opening. The under surface of the ledge member 79 is engaged by the pro-- j ecting portion 85 of the work table or saddle, such engaging surfaces being inclined in wardly and upwardly. An adjustable gib member 86 is inserted between these inclined surfaces and likewise an adjustable gibmemfore that the guiding structure is not thereby weakened by insertion therebetween of the long unsupported opening required by the adjusting screw. The guiding surfaces are therefore practically freed from. any-disposition to bow andto thereby destroy the ref lation of the guiding surfaces with an attend- I ant loosening of the securing means.

Any tendency of the table to .turn in a counterclockwise direction in Fig. 3 causes the overhanging hook portion of the guide to firmly engage the upturnedportion .84: of the table saddle and cause the surface 88 to firmly engage the upper fiat surface of the ledge member and the projecting portion 85 to likewise engage the under surface of the ledge in a more firm manner. As a' result of the inclined surface on the projection 85 and also the upturned portion of the table saddle 8 l, normal working forces acting on the table would tend to more firmly draw the table saddle into engagement with the surface 89 of the ledge member and the co-act ing surfaces to be more firmly locked onthe ledge member. By providing the upturned portion at and an overhanging hook portion onthe rail rather than having the table hook over the rail as in many prior constructions the advantages pointed out above are accomplished and in addition a longer lever arm is provided for resisting the turning; movement normally imparted-to the work table, such lever" arm being equal to the distance from the upturned portion Bate a point near the lower part of the bearing plate 78. 1 The above'described cross rail and table construction is especially advantageous in conjunction with the dual control means in that it permits the latte r to be mounted'in such a position that the actuating shaft 62 may be extended out through the support ing drum and concentric therewith.

Without further analysis, the foregoing will sofully reveal the gist of this invention .that otherscan, by applying current knowl- 'Having thus revealed this invention, I,

claim as new and desire to secure the following combinations and elements, or equivalents thereof, by Letters Patent of United States a 1'. A shaper combining a frame; a cross rail mounted thereon; a saddle translatably mounted on said cross-rail; a trunnion extending outwardly from said saddle; a table rotatablymounted on said trunnion; means, including an actuating shaft extending lengthwise of said table and having its operating end accessible from the end of the table, for rotating the table on said trunnion; a tiltable supporting member pivotally mounted on said table; means carried by and rotatable with said table and including an actuating shaft having its operating endaccessible from the end of the table for tilting said supporting member in the various angular positions of said table; means for trans- .lating said saddle along said cross-rail including'a non-rotatable nut carried by said saddle, a rotary feed screw journaled lengthwise of said cross-rail and having a threaded engagement with said nut, said feedscrew being provided with a projecting end adapted to receive an actuating crank to effect rotation of said screw and thereby translation of said table; and auxiliary means for rotating said feed screw to efiect translation of said table, said auxiliary means including a shaft journaled coaxial with said trunnion and having an end adjacent the endof said table adapted to receive an actuating crank, and a splined gear connection between the other end of said shaft and said feed screw.

2. A shaper combining a frame; acrossrail mounted thereon; a' saddle translatably mounted on said cross-rail; a trunnion extending outwardly from said saddle; a table rotatably mounted on said trunnion; a sup porting bracket secured to the outer end of said table and extending above the axis of sai trunnion and having a verticalcslot therein; means, including an actuating shaft extending lengthwise ofsaid table and havlng its operating end accesslble from the end of the table, for rotating the table on said trunnion; a tiltable supporting member pivotally mounted on said table; means carried by and rotatable with said table and include ingan actuating shaft having its operating end accessible from the end of the table for tilting said supporting member in the various angular positions of saiditable; means for translating said saddle along said crossrail including a non-rotatable nut carried by said saddle, a rotary feed screw journaled feed screw being provided with a, projecting end adapted to receive an actuating crank to sheet rotation of said screw and thereby lengthwise of said cross-rail and having a threaded engagement with said nut, said translation of said table; and auxiliary means for rotating said feed screw to effect translation of sai d table, said an: 'liary means including a shalt iournaled coaxial with said trunnion and in alignment wi h the slot in said supporting hr clret having an endedjacent the end of said table adapted to receive an actuating cranlr passed tnrough said slot, and a splined gear connection between the other end of said shaft and said feed screw. i

In witness whereof, I have hereunto subscribed my name.

WTLTJANI F. ZIMWTERMANN.

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