US326050A - Iiiiiiiiiiiiiibf - Google Patents

Description

4 SheetS-Sfieet 1.

(No Model.)

W. J. MUNOASTER.

v MACHINE FOR BORING AND TURNING PU'L'LEYS.

No. 326,050. Patented Sept. 8, 1 885.

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N4 PETERS. Pmumo n hun Wnhinnon. D. C.

(No Model.) 4Sheets-Sliee't'21 W. J. MUNOASTER.

MACHINE FOR BORING AND TURNING PULLEYS}. No. 326,050. Patented Sept. 8, 1885.

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(No Model.) 4 she t s-sneet 3. W. J. MUVNGASTER.

MAGHINB FOR BORING AND TURNING PULLEYS.

Patented Sept. 8, 1886.

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(No Model.) U W. J. MU-NGASTER.

V MACHINE: FOR BORING AND. TURNI U L Y L No. 326,050. v Patented Sept; 8, 1885 lnvenio r:

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" UNITED STATES PATENT (Darren.

WALTER J. MUNGASTER, OF CUMBERLAND, MARYLAND,ASSIGNOR or one HALF TO MERWIN MOKAIG, or SAME PLACE.

MACHINE FOR BORING AND TURNING PULLEYS.

SPECIFICATION forming part of Letters Patent No. 326,050, dated September 8, 1885. Application filed May 13, 1885 7 (N0 model.)

To all whom it may concern Be it known that I, WALTER J. MUNOAS- TER, of Cumberland, in the county of Alleghany and State of Maryland, have invented certain new and useful Improvements in Machines for Boring, Turning, and Finishing iFulleys, of which the following is a specificaion.

My invention relates to machines for boring, turning, and finishing pulleys; andit consists in various features and details hereinafter explained.

In the accompanying drawings, Figure 1 is a front elevation of the improved machine; Fig. 2, a side elevation; Fig. 3, a top plan view; Fig. 4, a detail sectional view of the head; Fig. 5, a side view of the machine when used only for turning; Figs. 6 and 7, views illustrating the gearing.

A indicates a frame of suitable form, having a vertically-movable tool stock, B, mounted in its head, and provided with a rotary horizontal bed or table, 0, at a suitable distance from the floor-line, and below the head.

D indicates a horizontal shaft, carrying a bevel-pinion, E, gear-wheels F and G, and cone or series of pulleys H.

In rear or at one side of the shaft D is a second shaft, I, carrying gear-wheel J and pinion K, and carried in eccentric boxes or bearings, which may be partially rotated by a lever, L, to throw the gears J K into or out of mesh with gears F G of shaft D, this being merely the ordinary arrangement of back-gearing used in lathes or like machinery.

Motion is taken from pinion E to bed or table 0 through a shaft, M, carrying at its upper end a bevel-pinion, N, and at its lower end a pinion, O, which meshes with a like pinion, O, on thehorizontal table 0.

The cone H affords three changes of speed. The back-gear permits this number to be doubled, and by employing a double-speed countor-shaft, the number may be again doubled, thus giving all speeds required for workup to forty inches diameter. For larger machines a greater range of speed should be provided, with, of course, correspondingincrease or decrease of power.

The bed 0 is provided with radial T-grooves,

which serve to receive bolts or movable jaws by which to secure' the pulley, or like work, upon the bed, and as it continuously rotates during the operation of the machine the tool: stock is not required to rotate, but merely to 51 rise and fall to feed or withdraw the tool which it carries.

The boring-tool stock B is formed with a rack at its rear end, and is movedup or down as required, by a pinion, a, secured upon a 6( shaft, 12, journaled in the head of frame A,and provided at one end with a worm-wheel, T, and at the other end witha hand-wheel, U, the latter being used to raise the boring-tool stock, for which purpose a rapid movement is desirable. The worm-wheel receives motion from a worm, V, on a shaft, 0, which is provided with a gimbal-joint, d, to permit its front end to be raised or lowered to throw the worm into orout of gear with the worm-wheel. 7c The forward end of the shaft 0 is carried by a box, 6, which is raised and lowered by an eccentric, f, provided with asuitable handle, as shown in Figs. 1 and 2.

Heretofore in this class of machines no provision has been made for disconnecting wormwheel T and worm V, and as a consequence the ascent of the boring-tool stock has been slow, but by merely turning the eccentric f and dropping worm V the shaft 5 is left free to be rotated by hand-wheel U.

The rearend of shaft 0 is furnished with a geanwheel, g, which receives motion from a pinion, 71, attached to a cone-pulley, 1;, and driven by bclt from any convenient part of the machine or from a counter-shaft, as may be expedient. So long as the worm V remains in gear With worm T the shaft 1) and pinion a will be slowly rotated and the boring-tool stock B will be advanced.

It sometimes happens that a continuous and automatic feed is not desiredas, for instance, in centering work upon thebed '0, when it is necessary or desirable to have the boring-tool stock under instant control, so that the necessary adjustment of the work may be conveniently made, and when turning a pulley upon a mandrel, or without the necessity of boring. In such cases a center is placed in the boringtool stock and another in the bed, and the stock is lowered until the work is held between the two centers.

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For effecting the lowering of the stock for such work, the shaft cis furnished with a crank or handle, 9', by which it may be rotated, and when this is to be used the belt is thrown off the pulley i or off the pulley from which the belt takes motion, the handle is turned, and the boring-tool stock is fed down through the action of the worm and worm-wheehbut by hand-feed instead of power.

This mechanism also admits of use as a handfced for drilling or like work when such feed is desirable, and the gimbal-joint d permits the front end of shaft 0 to be thrown in toward the head of frame A within easy reach of the operator.

In order to adapt the machine to turning or dressing off the peripheries of pulleys or like'work simultaneously with or independently of the boring operation, I provide the frame A with an upright plate or face, \V, strongly braced by webs or ribs, and at such distances from the center of the bed C as to clear any work that may be placed thereon; and I place upon such upright face two sliding blocks, X, each carrying a plate, Y, capable of being rocked in a vertical plane, and each plate in turn carrying a slide, Z, provided with a cross-slide, k, the latter bearing a toolclamp, Z.

The main slides or blocks X are preferably connected by a right-and-left feed-screw, m, journaled in frame A, by which the blocks may be moved to or from each other, a handle being provided at each end of the screw m to permit adjustment from either side of the machine.

Each slide Z is furnished with a feed-screw, 12, carrying a hand-wheel, 0, and ratchet'wheel p, the former for feeding by hand and thelatter constituting part of an automatic or power feed, the screw serving to raise and lower the cutting-tool and its supporting devices. In like manner each cross-slide k is furnished with a fled-screw, q, by which the tool may be moved toward or away from the center of bed 0 independently of the sliding blocks X and While the latter remain at rest.

As shown in Figs. 2 and 3, the plates Y are each formed with a forwardly-extending web, braced and stiffened by ribs or flanges and spread or widened at the front to form a guide and support for its slide Z, the forward projection of the web being such that, together with the slide Z and cross-slide k, the tools shall be brought into line with each other in a plane parallel with upright face WV of frame A, and in line with the axis of toolstock B or approximately so.

By means of screw m, the turningtools r, carried by the clamps k, may be set apart far enough to clear the work secured upon the bed 0, by screws n the vertical adjustment of the tools may be regulated, and when proper connection is established with the feedinggear of the machine the tools are caused by said screws to move up or down to dress the periphery of the work; and, finally, by means of the feed-screws q, the tools may be advanced or receded independently, quickly, and to any extent required.

Motion is given to each of the ratchetwheelsp bya spring-sustained pawl or dog, 8, carried by a plate, 15, arranged to swing horizontally about the stem or screw it, and, connected by a rod or pitman, u, tot-he crank-pin or a crank-wheel or disk,@ carried by a vertical, shaft, to. The two vertical shafts w are each furnished with a bevel-pinion, y, each of which pinions receives motion from a horizontal cross'shaft, 00, provided with bevel-pinions z and a, the latter meshing with and receiving motion from a bevel-pinion, P, on a shaft, Q, provided with a bevel-pinion, R, to which motion is given by a bevel-pinion, S, on theshaft of bed 0, as shown in Figs. 5, 6, and 7. The crank-pins of the disks 1; are adjustable in radial slots 6 to vary the throw of the plates t, and consequently the feeding action of the screws n.

In order to permit the feed-slides to be set for taper work, the plates Y are so mounted that they may be rocked in a vertical plane, as already mentioned; and in order to secure them rigidly in any adjusted position the plates are provided with curved slots f, through which pass clamping-bolts g, as best shown in Fig. 1. To permit such adjustment of the plates without interfering with the connecting rods or pitman a, the connection of said pitman with the crank-pins is advisably made in the form of a ball-and-socketjoint, the opposite ends of each being passed through and clamped in an eye or opening in the swinging plate t by a set-screw, h, as shown in all the figures.

With this machine I am enabled to bore and turn pulleys at one and the same operation or to perform either operation independently, thus permitting a large amount of work to be done in a short time, insuring perfect concentricity of the eye and rim, and avoiding the IIO necessity of two extensive machines by adapting the one machine to do the work of both.

The turning appliances can be applied to boring and drilling machines already in use, and thus the value of such machines may be vastlyenhauced at a comparatively small cost.

The saving in space effected by this invention is also an item of marked importance in machineshops, and one operator or attendant may do the work hitherto performed by two.

One turning-tool may be used instead of two, if preferred.

Fig. 5 shows the machine when designed for turning alone, the boring bar or stock B being replaced by a centering-arbor or tailstock.

I am aware that it is not broadly new to combine a turning or dressing tool with a boring-tool in machines for boring, turning, and finishing pulleys, and I make no broad claim to such combinations. So far as I am aware, however, the turning or dressing tool has in all cases heretofore been carried by or with the boring-tool slide or stock, or connected with the feed of said boring-tool, and consequently advanced proportionately and arbitrarily therewith. renders each tool independent of the other or others, and permits the feed to be adjusted with the greatest nicety or any tool to be stopped in its action without affecting any other, and this is a feature of much practical importance.

I am also aware that an eccentric has been employed to throw the worm-gear of a drilling-machineinto and out of gear, and my claim in this connection is restricted to a combination of which a jointed or flexible shaft constitutes an element, a joint being necessary to permit the shaft to run at an angle to the axis of its driving-gear wheel.

Having thus described my invention, what I claim is- 1; In a machine for boring and turning pulleys, the combination of a frame, a rotary bed to receive and hold the work, a boring-tool stock, and turning-tool holders wholly independent of the boring-tool stock, and its feed mechanism adjustable toward and from the center of the bed, substantially as and for the purpose set forth.

'2. In combination with a main frame, a rotary bed or table, a drill or boring-tool stock perpendicular to the table, and a toolholder adjustable to and from the drill-stock, and wholly independent of said stock and its feed.

3. In combination with a frame, a rotary bed or table, a drill or boring-tool stock perpendicular to the bed, and a tool-holder adjustable to and'from the drill or boring-tool stock, and also adjustable in the direction of the length of the boring-tool stock, said toolholder being wholly independent of the boring-tool stock and its feed.

' 4. In combination with a frame, a rotary bed, a drill or boring-tool stock perpendicular to the bed, and a tool-holder adapted and arranged to be moved toward or from the drill-stock, to be moved in line with the axis of said stock, and to move at an angle to said axis but in the direction of its length.

5. In combination with a frame, a rotary bed, a drill or boring-tool stock perpendicular to and adjustable to and from the bed, and a rotary support mounted upon the frame and adapted to be adjusted vertically, horizontally, and at intermediate angles, substantially as set forth.

6. The herein-described pulley boring and turning machine, consisting of frame A, boring-tool stock B, rotary bed 0, upright face W, sliding block X, plate Y, slide Z, and cross-slide k, the block X and slides Z being each provided with a fixed or adjustable screw, all combined and arranged to operate substantially as described.

7. In combination with a supporting-frame My plan, however,

power-feed may be produced automatically or i manually at will and a quick return of the drill stock may be effected independently of the power-feed.

8. The combination, substantially as described and shown, of frame A, verticallyadjustable stock B, shaft 1), provided with pinion a, worm-wheel T, and hand-wheel U, and shaft 0, provided with worm V, handle 9, and pinion g, to receive motion from the driving-gear, said shaft and worm being adjustable to and from the worm-wheel.

9. The combination, substantially as described and shown, of frame A, verticallyadjustable stock B, bed 0, shaft 6, provided with pinion a,worm-wheel T, and hand-wheel U, shaft 0, provided with worm V, handle j, and flexible joint d, box 6, supporting said shaft, and eccentric f, adapted to move said box and shaft and throw the wormand wormwheel into and out of gear.

10. In combination with frame A, stock B, and rotary bed 0, upright face W, verticallymovable slide Z, feed-screw n, ratchet-wheel 1), plate t, dog 3, carried by said plate, crank disk 1;, and pitman U, connecting the plate It and crank-disk, substantially as described and shown.

11. In combination with frame A, stock B, and rotary bed 0, upright face W, rocking plate Y, slide Z, mounted upon said plate, feed-screw it, provided with ratchet-wheel 19, plate t, dog 8, carried by said plate, crankdisk 1), and pitman u, connected with the crank-pin of disk 1) by a universal joint and adjustably connected with the plate t, substantially as set forth.

12. In a machine for turning pulleys, the combination of a frame, a rotary bed to re ceive and hold the work, and turningtool holders adjustable to and from the center of the bed, substantially as andfor the purpose set forth, and wholly independent of the bor-. ing-tool stock and its feed.

13. In a machine for turning pulleys, the combination of a frame, a rotary bed to re ceive and hold the work, a stock movable to and from the center of. the bed, and turningtool holders adjustable to and from the center of the bed and wholly independent of the boring tool stock and feed.

WALTER J. MUNOASTER. Witnesses:

0. SMITH, J r.,

F. M. OFFUTT.

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