US1368499A

US1368499A - Grinding attachment for lathes

Info

Publication number: US1368499A
Application number: US173723A
Authority: US
Inventors: Hardy Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-06-09
Filing date: 1917-06-09
Publication date: 1921-02-15
Anticipated expiration: 1938-02-15

Description

v C. HARDY.

Gamma .ATTACHMENT Foa LATHEs.. y 'APPLICATION FIL'ED JUNE E?, 19|?- 14,368,499. Patented Feb. 15, 1 921.

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1111// .llllllllli c? ATTORNEY UNITED s'rn'rgsrarnur oFFlcr..

CHARLES HARDY, GE' CONEY SLAND,"NE'W YORK.

GRINIDING ATTAGHMENT EUR LATHES.

Application filed .Tune 9,

To all wim/m, t may concer/n.:

Be it known that I, CHARLES HARDY, residing at Coney lslanchin the county of Kings and State of New York, have invented certain new and useful improvements in Grinding Att-achn ents for Lathes, of which. the following is a specification.

This invention relates to. a grinding attachment for lathes.

The object of the invention is to provide a simple, inexpensive and yethighly eiiicient device of this character. A further and more detailed object is to provide a grinding attachment and means whereby it may be adjustably connected with the lathes so as to be capable of adj ustment to dispose the grinding element in various planes with respect to the rotating axis of the lathe.

A further object j is to provide means whereby the grinding element of the attachment may be connected therewith in different ways so as to acconnnodate it for the different types oflworlr which it is desirable that itV shall perform.

Other objects and aims of the invention, more or less specific than those referred to above,'will be in part obvious and in part pointed out in the course of the following description of the elements, combinations, arrangements of parts and applications of principles, constitutingthe invention; and the scope of protection contemplated will be indicated in the appended claims. j

In the accompanying drawings which are to be taken as a part of this specification, and in which l have shown merely a preferred form of embodiment ofthe invention:

Figure l is a side elevational view of the attachment showing the same in operative position upon a lathe.

Fig. 2 is an enlarged view of the attachment detached and shown in horizontal section substantially upon the plane of line ll of Fig. l. l

Fig. 3 is an end view of one of the bearing sleeves employed, and

Fig. 4l is a diagrammatic detail view, on a reduced scale showing a different manner of attaching the grinding element.

Referring to the drawings for describing in detail the structure which is illustratedtherein, the reference character L indicates the lathe supporting the part 1 which ordinarily is employed to carry the tool post,

Specification of Letters Patent.

.Patented Feb. 15, 1921.

1917. sei-m1 No. 173,723.

the part 1 being movable transversally of the lathe bed through the medium of the guide Z and being movable longitudinally7 of the lathe bed through the mediiun of the guide 3 in the usual manner so that the tool post member 1 may be adjusted in any horizontal direction.

vThe reference character G indicates a threaded standard which is supported by the partl in the location ordinarily occupied by the toolpost, the tool post being temporarily removed, and the reference character H indicates the grinding attachment proper which is supported by the standard G to project laterally therefrom in a horizontal plane".

The standard G is provided with a head Ll at its lower end which engages beneath the shoulders 5, of the part 1 and a clamp nut 6 is threaded upon the standard to engage the top surface of the shoulders 5 to grip said shouldersbetween the nut and the head so as to retain the standard in a rigid vertical position. il'he length of the standard is preferably such as to extend for some distance above `the horizontal plane of the rotating axis as 7 of the lathe.

.The attachment proper consists of a body member S and a spindle carrying member 9.

The body member 8 is apertured as at 10, to telescope over the standard GV and is adapted to be held in any position of vertical adjustment along lthe standard by meansof a pair of clamp nuts 11 and 12 which are threaded upon the standard', one below and one above the body member. At its outer end it carries a stud 13 which is formed with an annular groove 14; therein. A flat annular surface 15 is provided surrounding the stud.

The spindle carrying member 9 is provided at its inner end with a socket 1G adapted to receive the stud 13 and with a flat annular surface 1"(A adapted tores't fiat against thesurface 15 of the body member when assembled.

TheseY parts afford a convenient radial adjustment of the member 9 with respect to the body member, and a set screw 18, which is carried by the member 9 engages within the groove 14: to hold the member 9 in any position of radial adjustment and also to retain the member 9 against disconnection from the stud.

At its outer end the spindle carrying member is bifurcated to forma pair of legs 19 and 2O with an open space between them 'adapted to receive a drive pulley 21. The

ends of the legs 19 and 2O are enlarged and each is apertured to receive a bearing sleeve 22. The sleeves 22 are rigidly fixed 1n position preferably by being driven into the central. portion thereof which bridges the space between the

legs

19 and 20. The outer, or left hand, end of the spindle is enlarged toV provide a hea-d 24 and theinner surlace as 26, of this head is cone-shaped and is received ina correspondingly shaped depression formed in the outer end of the adjacent bearing 22. From the inner end of the cone-shaped portion 24 to the inner endV of the adjacent sleeve 22 the spindle is slightly tapered as indicated at 26, and the bearing opening in the sleeve is likewise tapered to provide a snug fit.

The inner end portion of the spindle is continued at a reduced diameter as at 27, so as to facilitate assembling7 as'will be readily understood, and the bearing connection with the inner sleeve 22 is provided by means of a bearing sleeve 28 which is iitted to the part 27 of the spindle and which is formed with a head 29 providing a cone surface 30 and with a tapered portion l31 providing` an outwardly tapering exterior surface similar to that described at the outer end of the spindle.

' The two bearing sleeves 22 are of identical shape and the cone-shaped seats and tapering' openings thereof are in opposed relation. Each is provided with a shoulder 32 at its outer end for engaging against the outer surface of the

legs

19 and 20 to limit possible inward movement at all times. The

bearing member 28 is connected with the spindle in such a manner as to have a slight longitudinal movement upon the spindle'but no rotary movement. This is effected by means of a pin 33 which is carried by the bearing member and which extends into a runway 34 formed longitudinally of the spindle. The adjacentY end portion of the spindle is threaded as at 35 Vand carries a clamp nut 36 by means of which the bearing member maybe slid to cause it to move in one direction while drawing the spinp die in the opposite direction, thus causing the cone and tapered parts of the spindle and bearuig member 28 to assume a proper rotating relation within the bearing mem-V bers 22. A. set screw 37 may be carried by the clamp nut 36 to retain it against possible accidental movement.

The pulley 2l is connected to the spindle by meam'of a set screw 38 which extends into a longitudinal slot 39 formed in the spindle, whereby to provide the necessary movement of the spindle for the adjustment formed with a small longitudinal groove 4l at its inner surface terminating short ofthe two ends of said surface as clearly vndicated, and with a passage 42 extending from the groove 41 through the sleeve to the'oil cup, the oil cup being carried by the respective leg of the member 9 and the aperture 42 being continued through the material of the leg to the oil cup.

v t the outer end of the spindle the head 24 is provided with a reduced extension 43 adapted to receive the grinding wheel .44. The retaining screw 45 is threaded into the end of the spindle to retain the grinder iirmly in position.

ln some instances' it is desirable that the grinder be supported at a greater orless distance from the head 24 and for this reason it 1s contemplated that an extension piece, as shown at 46 in Fig. 4 may be employed carrying the grinder` at its outer end. L

The extension piece 46 may be connected to rotate with the spindle by any desired means but preferably it is formed with a tapered inner end portion 47 adapted to lbe received within av tapered seat 4S formed at the outer end of the spindle. The seat is formed as a conical enlargement-cf a central bore 49 which extends throughout the length of the spindle, and a tiebolt() extends through this bore into threaded engagement with the inner end of the extension 46, the bolt having a head 51 for engaging the inner end surface of the spindle whereby rotation of the bolt will draw the tapered portion 4T of the, extension inwardly into firm engagement with the spindle.

rlhe threads, as 52, for receiving the inlio ner end of the screw .45 are formed within the bore 49 at the inner end of the seat4tl, and it will be noted that the seat 4S, by its conical shape, provides a desirable means for Y lathe, it is apparent that a vast number of diperent operations may be performed upon the work in a simple, eflicient and expeditious manner. Various parts of the work may be milled, ground or polished while the work is rotating in the lathe, The helix angle of threads may be readily ground, or operations may be performed either interiorl or exteriorly of the work.

ny suitable means, as the drive wheel 53, and belt 54, may be employed for driving the spindle through the medium of the pulley 21.

lt is to be particularly noted that the axis of rotation of the member 9 about the stud 13 extends so that it directly intersects the axis of rotation of the spindle. Also that the point of intersection with the axis of the spindle is directly in the center of the pulley 2l. lt will thus be seen that rotation of the member 9 about the stud 13 will produce no appreciable movement of the member la longitudinally of the rotating axis of the lathe. Also, and what is perhaps more important, that rotation of the member 9 about the stud will produce no bodily shifting of the position of the pulley 2l. lllhe position of the center of the pulley will remain unchanged so that the drive belt 5a will be able to continue its driving function without likelihood of causing trouble such as might arise if the center of the pulley be made to shift.

As many changes could be made in the construction without departing from the scope of the invention as deiined in the following claims, it is intended that all matter contained in the above description or shown in the accompanying drawings, shall be interpreted as illustrative only and not in a limiting sense.

Having thus described my invention what l claim as new and desire to secure by Letters Patent is:

l. A grinding attachment for lathes comprising, a grinder carrying member, a support therefor comprising a substantially vertical standard from which said member projects in a substantially horizontal position, and said member including a part within which the grinder is rotatably mounted and means whereby said part is rotatably connected for adjustment about a horizontal axis, the axial line of which intersects the rotating aXis of said grinder.

2. A grinding attachment for lathes comprising, a grinder carrying member, a spindle upon which the grinder may be directly^ mounted, said spindle being rotatably carried by said member, an extension member through the medium of which the grinder may be indirectly connected with the spindle, and said spindle having parts adapted to receive and removably retain said eXtension member.

3. A grinding attachment for lathes comprising, a grinder carrying member, a spindle adapted for directly carrying the grinder, said spindle being rotatably mounted in said member, and the spindle having a longitudinal bore therethrough terminating in a conical seat at one end thereof, the conical seat being adapted to receive an extension-member and the remainder of the bore being adapted to receive a tightening bolt therethrough for engaging the eXtension member to retain the extension member within thev seat, whereby the grinder may be supported by the extension in rigid relation to the spindle.

e. A grinding attachment for lathes comprising a grinder carrying member, supporting means adapted to be connected with the bed of the lathe for movement therealong, a standard carried by said supporting means proj ecting` upwardly therefrom, the grinder carrying member being connected with said standard, being rotatable thereabout in a substantially horizontal plane and being vertically adjustable along the length of the standard, and means for retaining said grinder carrying member in any position of vertical and rotary adjustment upon said standard.

5. A grinding attachment for lathes comprising a grinder carrying member, a support therefor, comprising a Standard which projects upwardly from said support` the grinder carrying member being connected with said standard, being rotatable thereabout in a substantially horizontal plane and being vertically adjustable along the length of the standard, means for retaining said grinder carrying member in any position of vertical and rotary adjustment upon said standard, and said grinder carrying member including a Separate part with which the grinder is connected and means whereby said separate part is rotatably adjustable about a horizontal axis.

In testimony whereof I affix my signature in the presence of two witnesses.

CHARLES HARDY.

Witnesses:

L. Gnssronn nanny, AARON BENJAMIN.