US2321413A - Planer and shaper attachment for lathes - Google Patents

Description

June 8, 1943-. R. c. PALMER PLANER AND SHAPER ATTACHMENT FOR LATHES' flied-July 28,31941 2 Sheets-Sheet l ATT O'RN EYS Patented June 8, 1943 1 PLANER AND SHAPER ATTACHMENT FOR LATHES Raymond C. Palmer, Chicago, Ill.

Application July 28, 1941, Serial No. 404,409

4 Claims.

This invention relates to a planer and shaper attachment for lathes, and has for an object to provide an attachment of which will plane fiat surfaces, cut dovetails, rack teeth, keyways, switches, tapers, V cuts, angular cuts, and will square shafts.

A further object is to provide apparatus of this character which will be formed of a few strong, simple and durable parts, which will be inexpensive to manufacture, and which will not easily get out of order.

With the above and other objects in view the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be resorted to within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings forming a part of this specification:

Figure 1 is a front elevation of a lathe equipped with a planer and shaper attachment constructed in accordance with the invention.

Figure 2 is a plan view of the planer and shaper attachment.

Figure 3 is a longitudinal sectional view of the attachment shown in Figure 1 with parts in elevation.

Figure 4 is a cross sectional view taken on the line l-t of Figure 1 showing the attachment in end elevation.

Referring now to the drawings in which like characters of reference designate similar parts in the various views, It] designates the tail stock, II the head stock, l2 the bed, l3 the traveling work holding vice, M the feed screw and IS the frame of a conventional lathe. The vice swivels 360 degrees.

The planer and shaper attachment comprising the subject matter of this invention includes a frame having parallel side bars l6 and parallel end bars H. The frame is adapted to be secured to and extend between the tail stock 12 and the head stock ll of the lathe. A center opening I8 is formed in one of the end bars to receive the tail stock and other end bar is provided with a mandrel l9 and with anti-friction bearings 20 of the conventional Morse taper which fits into the spindle of the lathe head stock.

A base plate 2| is disposed transversely between the side bars l6 of the frame and is rigidly secured to the adjacent end bar I! by parallel webs 22. The base plate is thus a unitary structure with the frame, The frame is restrained from rotary movement on the head stock by a pair of arms 23 which project rearwardly from the base plate and engage the top of the head, stock at spaced points. The arms are braced by inclined braces 24 connected at the lower ends to the adjacent bar IT. The base plate is provided at the upper end with an integral arcuate guide 25 having an arcuate slot 26 the center of curvature of which is on the axis of rotation of the mandrel I9.

A slide bracket 21, in the nature of a flat plate, is disposed on the front side of the base plate and is provided with an integral hub 28 which is rotatably engaged in an opening 29 in the base plate in axial alignment with mandrel IS. A screw bolt 30 is threadedly engaged through the hub and into the slide bracket. A washer 3| is disposed underneath the head of the bolt and is engaged against the rear face of the base plate H. The slide bracket is thus mounted for swinging movement on the base plate, the hub 28 forming the pivot.

For adjustably securing the slide bracket at any adjusted position of its swinging movement a screw bolt 32 is threadedly engaged in the slide bracket and projects through the guide groove 26. The bolt is provided with a nut 33 von the outer end which may be loosened to adjust the slide bracket and may be tightened against the base plate to hold the slide bracket in adjusted position.

A slide 34 is splined on the front face of the slide bracket. The slide is in the nature of a flat plate having dovetail guide ribs 35 which slidably fit in guide grooves 36 formed in the front face of the slide bracket adjacent to the side edges of the slide bracket. The slide is secured in adjusted positions of its rectilinear movement on the slide bracket through the medium of an adjusting screw 31 which is swivelly engaged in a tubular bearing 38 which is formed integral with the slide bracket between the upper ends of the dovetail grooves 36. The screw is engaged in a threaded opening 39 formed in the lower portion of the slide 3d. The upper portion of the slide is cut away as shown at Ml to receive the tubular bearing 38 and permit rectilinear movement of the slide relatively to the tubular hearing when the slide is moved to adjusted positions on the slide bracket. The adjusting screw 31 is provided with stop disks ll above and below the tubular bearing 38 to prevent endwise movement of the adjusting screw in the bearing.

adjusted to take up wear by adjusting screws 43, thus assuring necessary rigidity.

A tool holder carrier 44, in the nature of a fiat plate is swingably mounted on the front face of the slide through the medium of a pivot pin 45 passed through hinge ears 46 on the lower portion of the slide and through a hinge ear 4'! formed at the upper end of the tool holder car rier. The purpose of hinging the tool holder carrier is to permit the same to swing out and lift from the path of the work when the traveling vice is returned to starting position. The tool holder carrier is provided in the front face with an opening 48 to receive the head 49 of a tool holder 50.

The tool holder is provided with an opening 5| to receive a tool 52. A securing screw 53 is threadedly engaged in an opening in the tubular holder and bears against the tool to rigidly secure the tool in the slot.

In operation the work is fed past the tool to perform the desired cut. The tool may be adjusted to various angular positions relative to the Work to perform desired cuts usually accomplished through the medium of a planer or shaper and not possible on a lathe.

From the above description it is thought that the construction and operation of the invention will be fully understood without further explanation.

What is claimed is:

1. In a lathe having a traveling workvice, a head stock and a tail stock, a planer and shaper attachment comprising a stationary frame having parallel side bars and parallel end bars, said frame extending between the head stock and the tail stock, a spindle having an anti-friction bearing connected with one of the end bars adapted to engage the head stock, an arm projecting from the first mentioned bar adapted to engage the head stock and prevent rotation of the frame on its axis, there being a recess in the other end bar adapted to receive the tail stock, and tool carrying means connected to the head stock and tail stock, a planer and shaper attachment comprising a stationary frame having parallel side bars and parallel end bars, said frame extending between the head stock and the tail stock, a spindle connected with one of the ends bars adapted to engage the head stock, an arm projecting from the first mentioned bar adapted to engage the head stock and prevent the rotation of the frame on its axis, the other end of the bar having a recess adapted to receive the tail stock, and tool carrying means connected to the first named end bar adapted to dispose a tool at various rectilinear and angular adjusted positions relative to the work vise.

4. In a lathe having a traveling work vise, a head stock and tail stock, a planer and shaper attachment comprising a stationary frame having parallel side bars and parallel end bars, said frame extending between the head stock and the tail stock, a spindle having an anti-friction bearing connected with one of the end bars adapted to engage the head stock, an arm projecting from the first mentioned bar adapted to engage the head stock and prevent rotation of the frame on its axis, the other end bar having a recess adapted to receive the tail stock, a tool carrying means connected to the first mentioned end bar adapted to dispose a tool at various rectilinear and angular adjusted positions relative to the work vise, and a tool pivotally mounted on the tool carrying means adapted to be swung upwardly longitudinally of the frame.

RAYMOND C. PALMER.

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