US1215000A - Metal-working machine. - Google Patents

Description

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METAL wonnlwc MACHINL APPLICATION 'FILED NOV. 23. 19|5.

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A'IETAL WORKING MACHINE. APPLICATION FILED NOV. 23| MN5.

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METAL WORKING MACHINE. APPLICATION mso Nov. 2s, 1915.

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METAL WORKING MACHINE.

APPLIcAloN man Nov. 23. m5.

Patented Feb. 6,1917.

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METAL WORKING MACHINE.

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` FRANK L. GONE, 0F WINDSOR, VERMONT, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE NATIONAL-ACME COMPANY, 0F CLEVELAND, OHIO, A CORPORATION OF O-HO.

METAL-WORKING MACHINE.

Specification of Letters Patent.

Application led November 23,1915. Serial No. 62,967.

lState of Vermont, .have invented new and useful Improvements Machines, lication.

Thisinvention has relation to metalworking machines, and particularly to those in which a plurality of tools are presented successively by a turret to the work for operating thereon. The object of the invention is to provide a mechanism adapted to he supported \on the turret for performing the operation known as forming, and thereby to produce the finished work rapidly and with accuracy. To this end the turret is provided with a cross slide equipped with a cutter of the desired character, which is brought automatically into potential working position, after which :by automatic mechanism the cross slide is moved transversely with reference to the work axis to cause the cutter to perform its operation.

0n the accompanyingr drawings, which in Metal-Working of which the following is a speciillustrate one embodiment of the inventionz Figure l represents, in side elevation, a single-spindle turret machine equipped with mechanism embodying the invention.

Fig. 2 represents an end elevation of the saine, looking toward the end of thc turret.

Fig.- 3 represents a silnilar end view, partly in section. on the line 3-3 of Fig. 1. and a port-ion of the case being removed to show the construction of one of the operating cams.

Fig. 4 represents a rear elevation of the turret and adjacent parts.

Fig. 5 represents a vertical transverse section through the machine, the work spindle 4 being shown in section.

Fig. 6 represents, in part, a similar section with the cross slide just completing its outward movement.

Fig. 7 illustrates, on a larger scale, a plan view of the turret end of the machine.

Fig. 8 represents a longitudinal vertical section through the turret and adjacent parts.

Figs. 9 and 10 illustrate, in detail, the construction of the cross slide, showing the latter in two different positions.

Fig. 1l illustrates, on a larger scale, in plan view, the cross slide and adjacent parts.

On the drawing l have shown my invention as being constructed for operation upon what is known as the Gridley single-spindle'machlne, the details of construction of which 1t wlll be unnecessary herein to describe. It will be understood, however, that the invention is not necessarily limited to this particular type of turret machine, as it may be utilized on machines of other types. I desire to have it understood, before proceeding to a ldetailed description of the machine, that the parts are shown more or less conventionally and that the phraseology which l herein employ is for the purpose of description and not of limitation.v

Referring to the drawings,-the frame of the machine is indicated as a whole at 20, and it is provided with bearings for the spindle which is indicated at 21. Suitable mechanism is utilized for rotating the spindie at the desired speeds, and also for automatically feeding the stock from which the work is to be produced therethrough. These features, however, are not intimately connected with the subject-matter of the p1cscnt invention and need not be described.

The frame of the machine, as shown in Fig'. 8 is provided with a bearing 22 in which is journaled one end of the. turret Q3. This turret is provided with a plurality of tool slides, one of which is indicated at :24 and the others of which are indicated at 25. The turret is hollow as shown, and each slide is provided with al pin or projection 26. extending into the interior thereof. Any

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moved in succession as the turret is rotated with a step-by-step movement. It is unnecessary to describe the mechanism for reciprocating the bar 27, as it is illustrated and described in detail in Letters Patent to George Otis (irridley, 725,438, dated April 14, 1903.

It will be understood that the turret is 1rotated with a step-by-step movement at intervals and that, after it has completed each step and is locked in position, the tool slide then in potential working position is advanced and retracted longitudinally of the work. The tool slide 24 is formed on its tace with a guideway consisting of 'a dovetail groove 29 on which there is mounted a cross slide4 30. On said cross slide may be mounted any suitable form of tool, but I prefer to mount thereon a forming cutter 31 which will perform what is known as a finishing cut. This cutter may be secured in place in any suitable way, and I have shown the slide as provided with a bridge bar' 32 through which clamping screws 33 may be passed downwardly to clamp the cutter 31 tightly upon the cross slide. The character and shape of the cutter 31 will depend upon the form of the finished work. For example, it may be so formed as to provide the finished cutpn the hub of a motorcycle vwheel or upon any other piece of work which is round in cross section.l

The bridge bar 32is Aprovided with an up- Ward extension 34 at '6ne"=. -d thereof and is provided with a clamp and a socket for the reception -of a cutting-oill tool 36. After the maintool slide 24 has been moved axially toward the work, the cross slide is moved transversely to cause the cutters supported thereb toperform their opera.- tions upon the n orfk, after whieh the cross slide is withdrawn and the, main slide 24 is moved outwardly away from the spindle to inactive position.

Any suitable mechanism may be utilized for operating the cross slide. In the presentinstance I employ an arm 37 such as is utilized in the Gridley machine for feeding one of the supplemental tool holders mounted on the bed. In the present case the two-'armed lever 37 is fulcrumed upon the bar 38 which is supported by the bed, and its depending arm is provided with a roll 39 to be engaged by suitable cams 40 mounted upon the inner face of a cam disk 41 located upon the cam shaft 42. This shaft 42 is the main cam shaft of the machine and is driven by any suitable mechanism, which need not be described but which is explained in detail in the Gridley patent previously referred to. In my' aplication for patent, Serial No. 6,879, filed ebruary 8, 1915, I have described a suitathe groove constituting complemental in` terlot-,king members for interlocking the lever and the cross slide. When the main slide 24 is moved toward the spindle. the eross slide engages the roll 45, and thereafter when the lever 37 is rocked it moves the cross slide with it, as will be readily understood.

It is desirable that the cross slide shall be locked in position when it is not being operated. .It will be noted, in Fig. (i for example, that the cross slide projects laterally beyond the mainslide 24, and that it is provided with a depending block 47 having a groove 48. To the turret is secured a locking bar 49 having a rib 50 Which registers with the groove 48 and which is caused to enter the groove when the main slide 24 reaches the end of its travel away from the work spindle. After the main slide has been moved a short distance toward the spindle, the rib 50 becomes disengaged from the block 47 and permits the cross slide to be fed transversely. When the main slide 24 is out of potential working position the cross slide is securely locked against movement relatively thereto.

I have stated that the cross slide carries the "forming cutter which performs the {inishing operation. I'l`he roughing former is preferably mounted upon a` sup\' lemental tool slide 5l u'lolnited upon the bed and upon transverse ways afi'orded thereby. as indieated at in Fig. l., The roughing cutter is indicated at. and is clamped by any suitable means in a tool holder 54 seeured to the supplemental tool slide 51. Said tool slide and its operating mechanism do not differ materially from the equivalent parts shown in my application to which I have. herein previously referred. In the present. instance the tool slide'l is reeiproeated by a two-armed lever 55 journaled on -a stud 56. shown in Fig. 3. The upper end of the arm is provided with an adjustable pin 57 bearing against the depending bloek 58 of the tool slide. The said lever is also provided with a roll 59 for engagement with the bracket or lu 460 secured to the tool slide. The lower en of the lower arm is provided with a roll for engagement. by the cams 61,

62 on the cam disk 41 to which reference has previously been made. As a matter of detailed construction it will .be noted that the cutter 53 rests upon an adjustable wedge 63 so that it may be adjusted both as to height and lateral position relatively to the work. v

One of the features of the present invention consists in a device mounted upon the slide 24 in the rear of the cross slide for holding the work against cutting strains and thereby preventing chattering and the formation of a rough surface. Where the end of the bar upon which operations are being performed is hollowed out as by means of a boring tool and a reamer, I provide a work support which enters the cavity in the work. Where the finished work is solid, on the other hand, I may provide a work rest which will lengage the periphery thereof at its outer end. As shown, however, the slide 24 is provided with a holder 70. This is secured4 by any suitable means upon the top of theslide 24 and may be of any suitable construction, As shown, in Fig. 9 for example, it is split at one side'to form two clamping members one of which is drawn toward the other bya screw 71. Tn this clamping holder' isinserted va bar 72 which,when the slide 24 is in potential Working position, is in axial alinement with the work spindle'. The end of the bar 72 which projects toward the spindle is reduced and is provided on its reduced end with a roll 73 of a size sufficient to fit nicely within the cavity in' the Work. This roll is held in place by a washer-74 and a screw 75.

The operation vof the mechanism will be readily understood from the foregoing description. Assuming for instance that the work to be produced is the hub of a motorcycle wheel and that the preliminary operations of boring and reaming have been completed, the next rotative movement of the lturret brings the slide 24 into potential working position Thereupon by means of the bar 27 the slide 24 is advanced rapidly toward the spindle, carrying with `it the cross slide 30.A As the slide 24 moves forwardly, the block 47 is disengaged from the lock 49 so that the cross slide is free to he moved transversely of the work. As the slide 24 continues its movement toward the bed it finally reaches a position in which the roll 73 of the work support or work rest has enteredthe open end of the hollow piece'of X work and the roll 45 on the lever 37 has entered or become engaged with the groove in the end of the cross slide. Thereupon the slide 24 is held at rest. Then the supplemental tool slide 5l is operated to move it toward the work so that the cutter thereon, which is of the proper shape and charactela-performs what is known as the roughing forming cut. After the roughing cutter has completed its operation, the finishing cutteron the cross slide engages the work and completes the cut. The movement of the cross slide, however, continues until the cutting-off cutter has completely severed the finished piece of work, after which the cross slide is returned to its initial position and the slide 24 is fed backwardly away from the work spindle to its original starting point. Thereupon the turret is indexed. The two cutters, that is, the roughing cutter and the finishing cutter, may both operate simultaneously upon the work, and the cutting-ofi1 cutter may start its cut before the forming is completed.

From the foregoing description it will be apparent that the operation of the tool slide 24 and the operation `of the cross slide 30 are controlled from the same feed or drum shaft 27 through suitable cams mounted thereon.

The mechanism which T have herein described as embodying some of the features of the invention, to wit, the main slide'24 having a cross slide thereon, the work rest, and cutters supported by the ,cross slide,

may all be sold separately as an attachment K for the Gridley machine, or they maybe incorporated directly in the machine in the course of its manufacture.

Having `thus explainedthe nature of my said invention and described a way of constructing and using the same, although without attempting to set forth all the forms in which it may be made' or all the modes of its use, what I claim is:

1. A metal-working machine comprising a work spindle, a cam, a lever actuated thereby, a tool slide movable longitudinally of the work spindle, a cross slide on said main tool slide, and separable means for .interlocking said cross slide with said lever.

2. Ametal-working machine comprising a work spindle, a main tool slide, means for revolving said main'tool slide to move it into and out of potential working position, a cross slide on said main tool slide, a member for actuating said cross slide, said cross slide and said member having complemental separable interlocking elements, and means for moving said main slide to cause said cross slide to interlock with said actuating member.

3. A metal-working machine comprising a work spindle, a turret movable about an axis with that of the work spindle, a cross slide thereon, mechanism for effecting a relative movement of said cross slide and said spindle in a direction lengthwise-of said spindle, av rotary cam supported on said bed, and a (aun-operated lever supported on said bed `for moving said cross slide transversely with relation to said work spindle.

A metal-working machine comprising a main frame, a work spindle journaled therein, 'a turret movable about an'axis parallel v with the work spindle, a cross slide there- CIT on, mechanism for moving said cross slide bodily lengthwise of said workspindle, a lever supported by said bed, mechanism for automatically rocking said lever, and complemental interlocking members'on said lever and said cross Slide adapted to be alternate'ly engaged and disengaged by the movement of the cross slide toward and from the work spindle.

6. A metal-Working machine comprising a work spindle, ay turret, a main tool slide thereon, a cross slide mounted on said main slide, means for moving said main tool slide on said turret toward and from the work spindle a bed for supporting said spindle and said turret, a. lever mounted on said hed, and complemental interlocking members on said lever and said cross slide adapted to be alternately engaged and disengaged by the movement of said main slide toward and from said spindle.

7. A metal-working machine comprising a work spindle, a tool slide movable lengthwise toward and from the spindle, a cross slide on the tool slide, mechanism for rc-l volving said tool slide about an axis, mechanism for moving said tool slide lengthwise, mechanism l'or moving said cross slide, and mechanism for' locking 'said cross slide against individual movement.

8. A metal-working machine comprising a work spindle, a turret adapted to'rotate with a step by step movement, a tool slide on the turret, mechanism for advancing and retracting said tool' slide, a cross slide on said tool slide, mechanism for feeding; and retracting said cross slide, and a lock for locking sald cross slide while 1t 1s m a retracted position.

9. A metal-Working machine comprising a work spindle, a turret adapted to rotate with a step by step movement, a tool slide on thel turret, mechanism for advancing and retracting said tool slide, a cross slide on said said cross slide bodily toward and from the end of the work spindle, and mechanism for positively feeding and retracting the cross slide in lines transverse to the axis of the spindle.

11. A metal-Working machine comprising a Work spindle, a tool "slide movable in a path longitudinal of said spindle, a cross slide mounted on said tool slide, a work rest mounted on the tool slide in rear of the cross slide, mechanism for` 'automatically movlng the tool slide to posltlon the cross slide and to engage the work rest with the work, and mechanism for feedin and retracting said cross slide relative y' to the tool slide and to the Work rest thereon.

12. A metal-Working machine comprising a Work spindle, a tool slide movable in a path longitudinal of said spindle, a cross slide mounted on said tool slide, a Work rest mounted on the tool slide in rear of the cross slide and having a rotatable member adapted to enter the open end of a hollow piece of work, mechanism for automatically moving the tool slide to position the cross slide relatively to the work, and to cause said rotatable member to enter the Work, and 4mechanism for automatically feeding and retracting the cross slide relatively to the tool slide and to the work rest thereon.

13. A metal-working machine comprising a. bed, a cam shaft ythereon having a cam, a lever fulcrumcd on said bed in operative re lation to said cam, a turret journaled on said bed, a tool slide on said turret, a cross slide on said tool slide, a forming cutter on the cross slide, and-mechanism for moving said Ltool slide to bring the cross slide into operative engagement with said lever, 'whereupon the actuation of said lever effects the operation of said cross slide and said forming tool. In testimony whereof I 4have aiixed my signature. f

FRANK L. GONE.)

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