US1243989A - Metal-working machine. - Google Patents

Description

L. F. 8: R. SCHULZE.

METAL WORKING MACHINE. APPLICATION FILED IAN/21. 1914.

Patented Oct. 23, 1917.

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FIG.1.

L. F. m. SCHULZE. METAL WORKING MACHINE.

APPLICATION FILED JAILZI. 1914. I

* Patented Oct. 23,1917.

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L. F. & R. SCHULZE.

METAL WORKING MACHINE.

APPLICATION FILED JAN. 21, I914. 1,2%3,98.. Patented mt. 23,1917.

4 SHEETS-SHEET 3.

L.- F. & R. SCHULZE. METAL WORKING MACHINE. APPLICATION FILED JAN-21.1914.

Patented Oct. 23, 1917.

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LEON F. scnunzn AND ROBERT scHULzE, on CLEVELAND, OHIO.

METAL-WORKING MACHINE.

Specification of Letters Patent. Patented Oct. 23, 1917.

Application filed January 21, 1914. Serial No. 813,546.

ordinary multiple spindle screw machine,

wherein the entire shaping andfinishing operation, or the finishing operation only, is performed by a tool comprising a cutting tool and backing tool which close in diametl'ical opposition upon the stock.

The invention further relates to means by which the cutting tool and the backing tool may automatically adjust themselves with respect to the center of the work holding spindle, so as to compensate for any error in the position of said spindle.

The invention may be further briefly summarized as consisting in the combination and arrangement of parts hereinafter set forth in the following description, drawings and claims.

Referring to the drawings, Figure 1 isa' side elevation of a portion of a multiple spindle machine showing the spindle head and tool slide with the device applied; Fig.

2 is an end elevation of the device; Fig. 3 is an enlarged side elevation of the member carried by the tool slide for operating the device; Fig. t is a top plan view of this operating member; Fig. 5 is a side elevation of the device; Fig. 6 shows the lower end with the tool and backing member; Fig. 7 is an end elevation looking at the chuck end of the spindle head; Fig. 8 shows a modified form of backing member for the device; Fig. 9 is an el vation of this device in another position; Fig. 10 is a side elevation of the device with a modified form of backing tool; and Fig. 11 is a frontv elevation of the backing tool member.

In carrying out the invention any preferred form and construction of. parts may be employed so long as they possess the necessary characteristics, but we-have shown an arrangement in. the drawings, which, is effective in operation, and in such embodi ment 1 represents the main frame of the machine provided with a suitable bearing'2 for the spindle head 3 which carries .a plurality-of spindles 4h The frame is also provided with a suitable guideway 5 for a tool slide 6. Mounted upon the top of the spin dle head is a support 7 for slides 8 adapted to receive-radially 'moving-tools and it is upon one of these slides 8 that the device is mounted, although it may be mounted in any other suitable manner, except that it' must move radially or laterally toward the work. Suitable mechanism, not shown, is provided for moving thetool toward and from the work, and also for operating the tool slide 6, but it is deemed unnecessary to show these mechanisms since mechanisms of this sort are common in the-art.

Secured to the support 7 is the main portion of the attachment, and this attachment comprises a mainbody portion 9 secured to the slide 8 by means of suitable bolts 10. This main body portion is provided'near its edges with a pair of supporting members 11 and 12 spaced apart for receiving the operating arts of, the device. Secured in the member 11 is a pair of stop pins 13 and 14, shown in Figs. 2, 5 and 7 These stop pins are spaced apart and are for a purposeto be described; Secured in the supporting members 11 and12 is a suitable screw 15 passing loosely through the member 11 and-threaded into the member 12. Pivotally mounted upon this screw or pin is a cutting tool member 16 and a backing tool member 17.

Each of these members is provided with a portion 18 extending at right-angles thereto, and each of these right angular portions 18 is provided with a guideway 19, as shown in Fig. 2, and in the guideway of the cutting tool memberv there is acutting tool 20 having an extension 21 fitting into the guideway 19 and a slotted opening 22 for acla-mping bolt 23. This cutting tool is adjusted by means of an adjusting screw 2% threaded into the end of'the right angular portion 18 of the cutting tool member and having a flange 25 for engaging the back end of the cutting tool; In this way the cutting tool is adjusted and clamped in any desired position by the clamping bolt 23. In a similar manner, the backing tool member is provided with a backing tool 27 which is adapted to conform to the shape of the piece sufficiently to back up the work and prevent the stock from being forced out of center by the cutting tool. This backing tool is adjusted in a manner similar to the cutting tool. The upper portions of the cutting tool member and the backing tool member are drawn together and the cutting tool and backing tool themselves drawn apart, since they lie on the opposite side of the center, by means of a rod 28 pivoted in the cutting tool member 16 extending through an opening in the backing tool member 17 and provided with a nut 29 having a hollow portion 30 for receiving a spring 31 entering an opening in the backing tool member. This nut is held in place by a check nut 32. The spring 31 tends to force the members 16 and 17 together and move the cutting tool and the backing tool apart. On the inner face of the cutting tool member is a hardened block 33 which is opposed to the hardened point 34 of a screw 35. This screw 35 forms an adjustment for regulating the throw of the two members, or in other words regulating the cut of the cutting tool.

Secured in the tool slide 6 is a bar 36 carrying at its end a clamping sleeve 3"? having rigid therewith an arm 38. The outer end of this bar is provided with a radially disposed opening 39 and with a spring socket 40 in alinement with this opening 39. Mounted in the opening 39 is a block %1 integral with a projecting arm 42 having rounded corners e3 at the end. The faces formed by these rounded corners are adapted to enter between the hardened block 33 and the end of the adjusting screw 35. The block 41 is provided with an open-- ing a l adapted to receive a pin 45 extending through the sides of the arm 38 at the opening 39 and the pin 45 is preferably made smaller than the opening 1% and the block 41 made slightly narrower than the open ing in the arm, as shown in Fig. 4 so that the projecting arm 4:2 may not only have rocking movement about the pin as, but will move transversely to the axis of pin 45, due to the large hole 14, and also move slightly lengthwise of the pin, due to the opening 39 being wider than block 411. In

order to hold this block 41 and arm 4:! in proper position a suitable spring actuated follower is provided, and it comprises a follower plate 16 integral with a stem 47 passing into the opening 40 and through the back of the arm, as shown in Fig. 3. Around the stem 47 is suitable spring 4-8. By the arrangement of the parts, the follower block e6 presses against the back of the block 47 and normally holds the arm 12 in proper position with respect to the other parts, the parts being adapted to give slightly to account for slight variations 1n adjustment.

In use, the cutting tool is made with a cutting edge to conform in cross section to the configuration of the article to be made and the backing tool is made of similar configuration. At the proper step in the cycle of operation of the machine, this tool is advanced laterally toward the stock until the edge of the cutting tool stands in proper relation with respect to the stock. At the proper time the tool slide advances and the rounded corners of the arm 42 enter between the hardened block 33 and the end 34. of the adjusting screw 35 and cause the cutting tool member and the backing tool member to be moved outward, with the result that the cutting tool and the backing tool are pressed inward toward the stock. The pivoted mounting of the cutting and hacking tools allows the cutting tool and the backing tool to press with equal force against the stock thereby supporting it during the cutting operation and also allowing.

the cutting tool and backing tool to automatically adjust themselves to exact position with respect to the working center of the spindles. The stock is thus shaped and finished according to the shape of the cutting tool. Upon the return of the tool slide to idle position, the cutting tool and backing tool are moved away from the work and the entire attachment is withdrawn as is customary in the different operations of ma chines of this type.

In F 8 and 9 we have shown a modified form of backing tool wherein the backing tool member 17 is provided with a roller 49 pivoted upon a pin 50 mounted in suitable ears 51 carried by the backing tool block w 52. This roller is made to conform properly to the work and by the use of it friction between the work and the backing tool is materially lessened.

From the construction of the device, it is quite obvious that the cutting tool and backing tool members as well as the operating cam member mounted upon the slide will adjust themselves to slight variations in the centers of the spindles, and the tool willv always cut in diametrical opposition to the backing tool in spite of such variations. As a matter of fact there is substantially no variation in the sizes of the finished articles due to variations in the centers of the spindles or other slight inaccuracies in the arrangement of the parts in view of the automatic self adjusting feature. In view of the fact that the cutting tool always cuts in diametrical opposition to the backing tool, the device may be utilized for shaping an article from the stock to the finished product without a previous roughing or shaping opera-' tion, and this result is attained because of the cutting being in diametrical opposition to the backing.

In the modification shown in Figs. 10 and 11, the backing tool block 52 supports a pair of pins 53 and 54 upon which are mounted backing rollers 55 and 56, these rollers being so arranged that lines drawn from their point of tangency with respect to the work to the point ofapplication' of the cutting edge of the cutting tool' will beequal. In this way the stock is firmly backed with respect to the cutting operation.

Having described our invention, we claim 1. In a metal working, machine, in combination, a stock spindle, a shaping tool having a cutting edge, a backing tool and means for operating said tools, said tools and said operating means being movable during operation relative to the stock spindle to cause automatic adjustment of the tools toward and from each other to center them about the stock spindle, thereby permitting the shaping operation to be per formed without any tendency of moving the stock out of the center line of the spindle.

2. In a metal working machine in combination, a stock spindle, a shaping tool having a cutting edge, a backing tool, supporting means for said tools, an operating device for moving the cutting tool and the backing tool into engagement with the work, and a support for said operating device, the tools and the operating device being so mounted in their supports that the said tools automatically adjust themselves to the work whereby the shaping operation is performed without any tendency of moving the stock out of the center line of the spindle.

3. In a metal working machine in combination, a stock spindle, a shaping tool comprising a cutting tool, a backing tool, said entire device being supported against longitudinal movement during the working operation with respect to the stock and adapted to close against the stock, means for operating said tools and a support for said means, said operating device being mounted in its support so as to actuate the tools and at the same time permit them to automatically adjust themselves whereby the shaping operation is performed without any tendency of moving the stock out of the center line of the spindle.

4:. In a metal working machine in combination, a stock spindle, a shaping tool comprising a cutting tool, a backing tool, said entire device being supported against longitudinal movement during the working operation with respect to the stock and adapted to close against the stock, an operating device for said tools, a support for said operating device, and yielding connections between the operating device and its support and permitting the tools in their engagement with the work to adjust themselves with respect to the center line of the spindle.

5. In a metal working machine in combination, a rotating work spindle and a longitudinally stationary cutting device comprising atransversely moving cutting tool and a transversely moving backing tool adapted to be operated concurrently and conjointly toward and from the center of the work spindle and to automatically adjust themselves relative to the center of the work spindle, and an operating member to thus operate the cutting and backing tools.

6'. Anattachment for metal working machine's comprising a main body' portion,a cutting tool member, a backing tool memher, said members being? pivotediir said main bodyportion, a cutting tool adjustably mounted on the cutting tool member, abacking tool adjustably mounted on the backing tool member, means for holding said tools in a normally open position, and means for moving said tools into operative position and into engagement with the work, said means for moving the tools being adapted to give in its operation and permit the tools to adjust themselves to the center of the stock spindle;

7 .An attachment for metal working machines comprising a main body portion, a cutting tool member pivoted therein, a backing tool member also pivoted insaid main body portion, suitable stops for said members, means for forcing said members into engagement with said stops, a cutting tool block movably mounted on the cutting tool member, means for holding said block in any adjusted position, a backing tool block movably mounted in said backing tool member, means for holding said backing tool block in any adjusted position, and means for moving the tools of said members into operative position, said means for moving the tools being adapted to give in its operation and permit the tools to adjust themselves to the center of the stock spindle.

8. An attachment for metal working machines comprising a main body portion, a cutting tool member pivoted therein, a backing tool member also pivoted in said main body portion, means for forcing said members toward each other, a cutting tool block movably mounted on the cutting tool member, means for holding said block in any adjusted position, a backing tool block movably mounted in said backing tool member, means for holding said backing tool block in any adjusted position, and means for moving the tools of said members into operative position and comprising a bar having camming faces for engagement with said members, a support for said bar suitably mounted and connections between the bar and the support for permitting it to have a slight movement and allowing the tools to equalize themselves upon the work and with respect to the center of the stock spindle.

9. An attachment for metal working machines comprising a main body portion, a

cutting tool member pivoted therein, a backing tool member also pivoted in said main body portion, means for forcing said members toward each other, a cutting tool block slidably mounted on the cutting tool member, means for holding said cutting tool block in any adjusted position, a backing tool block movably mounted in said backing tool member, means for holding said backing tool block in any adjusted position, and means for moving the tools of said members into operative position and comprising a bar having camming faces for engagement with said members, and means for permit ting a slight movement of said operating 15 member to allow for inaccurate position of the parts, and for permitting the tools to automatically adjust themselves to the stock and to the center line of the stock spindle.

In testimony whereof We afliX our signatures in presence of tWo Witnesses as fol- OWSZ LEON F. SCHULZE. ROBERT SCHULZE.

Witnesses:

G. O. FARGUHARSON, C. H. TRESOH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C.

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