US1009989A - Steady-rest for grinding-machines. - Google Patents

Description

U. H. NORTON.

STEADY REST FOR GRINDING' MACHINES. -APPL10AT10N FILED Nov. 5, 190e.V`

1,009,989. Patented Nov. 2a, 1911.

pnlTnn sTATEs PATENT orrion.

CHARLES H. NORTON, F WORCESTER, MASSACHUSETTS, ASSIGNOR TO NORTON GRIND- ING COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHU- SET TS.

STEADYREST FOR GRINDING-MACHINES.

Specification of Letters Patent.

Application filed November 5, 1902i.

Patented Nov. 28, 1911.

serial no. 461,246.

To all whom 'it may concern:

Be it known that l, Chamois lll. ltlon'ron, a citizen ot the YUnited States, residing` at ll/oreester. county of lllorcester. and State of Massachusetts, have invented a new and useful Steady-Rest for Grindinglaclxines.

' of which the following,` is a specilication.

fitted to slide on Ways so as to present the Workl longitudinally or axially to the periphery of a. grinding wheel. lin other machines the table isstat-iouary. and the 'wheel moves longitudinally, relatively to the work. lt is necessary in machines of these types to provide steady-rests or supports tor holding; the "work in a straight line, so that it will not spring); in its length` and so that the `grinding' wheel will not bend the saine. These steadyaests as previously constructed have comprised. means :For adjustably and yieldingly holding1 shoes or yokcs'to bear on the wei-lr. These shoes have loeen made of wi'iod or sotty metal, and hence a continual adjustment. is required to compensate `for 1. ear.. .l have improved 'this construction by exnployitail unyieldingly supported shoes so a ranged that they aan be removed and sul stituted by' othe for dilterent diameters oil. shatts. by maar the shoes or bearing; bloelts as separable or detachable parts. and by providina' sets ol." shoes or bearing blocks 2" A tor each 'me to be gg'ro'a'lnd. l can harden the .sante ano 'thus provide a noinyeldinot and supporting' face or work en- This alsffenables nie to provY s poing; means inthe aifljusting mechanism oy 'which each' shoe is adjusted to the work, that by setting the steady-rest or steady ress once 'lor a ,.iven piece o3t` worn,

duplicate 'Worin can he obtained. with no lhlrthen or very little :turther adjustment.

'lthh combination a detachable non-yield might supported hardened bearing shoe or block with stopping' means 'for preserving i a once accurately obtained adjustment. cnables the operator to produwy a much larger quantity of duplicate work as con'ipared with the old methods where adjustment of the steady-rest or steady-rests had to be made continually.

The invention consists ot further important points ot construction which will be understood by reference to the accompanying' drawing'. in which, A

Figure l is a side elevation partly in section of a steady-rest arranged to embody 1n), invention; Fig. 2 is a plan View, and Fig. 3 a rear elevationl of the stopping' means employed in connection with the adjusting device which raises and lowers the work engaging' part; Fig'. Ll. is a plan View of the stopl'iing means employed in conneotion with the device which adjusts the said part in `and out from the work; Fig. isa face or plan view on the line 5 ol.E Fig'. l of the detachable shoe-holder; F (i is an end elevation ot the parts shown in Fig. 5; Fig'. 7 is a perspective view of the shoe or work engaging` part; and Fig. 8 is a rear View thereof.

Referring to the drawing and in detail, I designates the table, Gr the grinding wheel, and W the work. The table is provided with the usual gib construction, and one or more steady-rests are fitted thereto. steady-rests are duplicates, and only one .need be shown and described for an understandingn of my invention.

T hesteady-rest trarne or block l is titted to the `g'ilo on said talole` and is provided with a. pivoted Clamp 1l which engages the'gib on the table, and which can be moved to look the steady-rest block in adjusted 'position by a nut 19. threaded on the end of an eye-bolt 13. rllhe upper part ot thosteadyrest block l0 is made hollow, and fitting" in the same is a, 'universally adjustable steadypost 'l/lv, the shank 15 of which extends` into the hollow or cavity in the steady rest block 10.

The shank l is provided with a bearing rib 16 which is turned so as to have a spheri-l cal contour, so that the shank can move ab lfut the Center of the sphere. A. cover 17 is ivated by screw 18 to the top olf the stemilfy-4 rest so as to engage-the rib 16, and is! `provided with a hook 19 which' fits under a,

These i knob 20 formed on the end of a screw 21 threaded into the steady-rest block. By unscrewng-the knob 20, the cover 17 can be' pulled to one side, so that the post 14 and its attachments can be lifted or taken out of the steady-rest block. Theppost 14 is adjusted in and out of the steady-rest block by a screw 22 which has a knob 23. Fitted on the screw is a slotted ring-sha ed stoparm 24. The screw 22 is thread 'into the stop-arm, and the stop-arm can be rigidly ,held on the' screw 22 by a screw 25 threaded inthe stop-arm across the slot. A screw 26 is threaded into the end of the stop-arm 24 in position to engage a. projection or ear-27 extending from the steady-rest block. By adjusting the screws 25 and 26 the position of the screw 22 and hence the in and out position'of the post 14 can be determined. A screw 28 may also be threaded into the steady-.rest to engage the screw 22 to lock the same in any position.' The screws 26 and 28 are provided with knobs 260 and 280, so that they can be readily manipulated.

On the front or inner end of the post .14 is formed a su port 29. Fitting into a boss 30 on the underside of said support is a plunger 31, the lower end ot' which is yoked, and turning on a pin passing through the yoke is a roll 32 which engages the movable table T. The plunger 31 is held from turning in the boss 30 by a 'screw 33 threaded through the support 29 and engaging a slot in the plun er. The plunger is adjusted in the boss 30 y a screw 34 which is threaded into the boss 30, and the end of which engages the plunger 31. The screw 34 is provided With a knob 340, and with a cylindrical extension 35 fitted on which is a slotted ring shaped stop-arm 36 which is adjustably held thereon by a screw- 37 which is threaded across the slot of the stop-arm as shown in Fig. 2, and which screw 37 engages a groove cut in the cylindrical extension 35 to hold the stop-arm 36 in place. The stop-arm 36 is rovided with an extending arm 38 in which is threaded a screw'39 having a knob 390, the end of which screw 39 engages a projection 40 extending up from the post 14. By this construction after the proper adjustment is obtained of the screw34, the stopping means comprising the arm 3,6 and the screw 39 can be set so that the adjustment of the screw 34 will always be retainedy by bringing the screw 39 up against the projection 40.

The surface of the support 29 is provided with three pins 41, as shown, and hung on the upper pin 41 is a shoeholder H which has a slot in its rear surface A,to engage therewith. The shoe just fits between the lower pins 41 and hence the shoe can ,be dropped into place on the pins 41 very quickly. The shoe-holder H is provided with a boss or hub h in which is fitted a se'i'ew 43. The

holder is also prev/idea with a ledge or ridg 44 at its foot.

S designates one of the shoes. The same is provided with three legs or supporting the casting thereof, as by placing an ironV bar or core in contact with the bearing faces 46-46. By this arrangement a hardened shoe can be unyieldingly held in engagement with the work. l

By the arrangement described the shoe holder is universally adjustable, that is,'it can rock in any direction, so that the shoe will engage the work properly.

After the shoe is in engagement with the Work, by adjusting the same in and out, and

by adjusting the same up and down, the Y shoe can be positioned so that very accurate grinding can be done. After the proper adjustment has been made of the shoe, the horizontal adjustment can be accurately retained by setting the stop-arm 24 and screws 25 and 26 so that the screw 26 will engage the ear 27, and the vertical adjustment of the shoe and shoe holder can be retained .by setting the stop-arm 36, screw 37, and screw 39, so that the screw 39 will engage the projection 40 when the parts are accurately adjusted.'

As the shoes are made out of hardened material very little wear will occur as thesame are used for duplicate grinding work, and when the adjustments are once made they practically can be retained for a long time without further manipulation by the operator, even if the shoe is backed off horizontally or lowered relatively to the work, as these movements can be made Without disturbing the position of the stopping means, and which movements are necessary if the work has to be gone over a number of times by the Wheel' which is the usual practice.

The arrangementsh'erein shown and described 'may be greatly varied by a skilled mechanic without departing from the scope of my invention as expressed in the claims.

Having thus fully described my invention, what I claim-is:-.

1. In a steady-rest forgrinding machines,.

the combination of a shoe holder having a rigid flange thereon,a steady-rest having a pair of feet-on the forward edge thereof.

adapted to engage said iiange and a rear foot, andI meanson the shoe holder for enmoonen gaging the rear foot and 'orcing,- it rmiy forwai to fix the sieady-rest firmly between Said meaneI and Said nnge.

2. In a steady-rest for grinding' machines, the combination of ay steady-rest bioek, a Steady-post moxibiy carried thereby "and havinggv a supporting surface, a detachable Shoe holder carried by said surface, and a hardened steel or iron shoe carried by the shoe holder.

In a steady-rest construction, Ure eonif binacion of the bioek, a. post extending,` therein, means for adjusting the post horizontally, a Stopping means determini'ngl rhe position Qi' the adj listing meehanisn'i, and a shoe detaohabiy carried. by the post.

. 4. n a steady-rest 'for grinding machines, the combination oit' the block, a post extending therein, means for adjusting the post, a shoe of hardened iron or steel Supported from the post, amd stopping means arranged 1n commotion-With the adjustingmechanlsnm 5. In a Steady-rest for grinding' machines,

the combination of a post, meanS for 'adjust-A ing the post horizontally and vertically', a shoe supportedr from the post, and stopping moans arranged in connection with the adjusting' mechanisms. l

in a steady rest construction, the combination of a post,`means for adjusting the post, a stopping means fordetermining the position of the zu'ijnsting mechanism, and a shoe detaohabiy carried by the post.

in testimony whereof have hereunto Set .my h :1nd in the presence of two subscribing W i tliesse s.

CHARLES H. NQRTON. iii'rinesses VFnnnn.. C. BUTTERFIELD,

V fi. HERBERT JOHNSON.

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