US2039224A - Gauging machine - Google Patents

Description

April 28, M36.

P. H. HUTCHENSON GAUGING MACHINE Filed April 15, 1930 2 Shefits-$h8t 2 H/SA TTUH'A/EY.

Patented Apr. 28, 1936 UNITED STATES PATENT OFFICE GAUGING MACHINE Application April 15, 1930, Serial No. 444,543

20 Claims. (01. 33-472) This invention relates to gauging machines and comprises all the features of novelty herein disclosed. An object of the invention is to provide an improved machine for testing the condition of a surface, especially a surface that is intended to be perpendicular to the axis of an article. Another object is to provide an improved machine for gauging the length of a round article or testing the out-of-square condition of an end face or shoulder thereof. Another object is to provide an improved machine for rotatably supporting a round article in a definite relation to a tool operating on an end face thereof whereby axial shifting of the article is prevented during the operation in spite of tool pressure or an out-of-square condition in an opposed end face.

To these ends and to improve generally and in detail upon machines of this character, the invention consists in the various matters hereinafter described and claimed. In its broader aspects, the invention is not necessarily limited to the specific construction selected for illustrative purposes in the accompanying drawings in which Fig. 1 is a side elevation of the machine.

Fig. 2 is a plan view with some parts broken away.

Fig. 3 is a detail sectional view of the wabble plate in its operative relation to an article.

Fig. 4 is a partial plan view, enlarged, with one of the rollers in section.

Fig. 5 is a sectional view of the pressure roller and its mounting.

Fig. 6 is a diagrammatic end view and Fig. 7 is a front view illustrating the immediate article engaging parts.

The present machine is especially adapted to indicate any variation in the length of a sleeve S at different portions of its periphery. The

sleeve is supported and rotated by a series of rollers which maintain the axis of the sleeve in a definite line of direction. A wabble-plate acts as an abutment for one end face of the sleeve to prevent any axial shifting while the spring pressed stem of an indicator rides on the other end.

The numeral 8 indicates a frame or base which can be conveniently fastened to a bench. The frame has a pair of inclined dovetail ways [8 separated by a space or recess l2. A slide [4 is shiftable along the ways and has the usual gib I 6 secured to the slide by screws I8. A nut 20 is fastened to the under side of the slide by screws 22 and is threaded on an adjusting screw 24 having an operating knob 26. The screw is journalled for rotation without endwise movement in a plate 28 fastened by counter-sunk screws 30 to the frame. The slide I4 has a pair of end standards 32 which revolubly support a roller 34 which in the present instance is a plain cylinder. The details of the roller mounting will be clear from a description of a similar roller hereinafter re-' ferred to.

A bracket 36 is fastened to one end of the frame by screw bolts 38. A boss 40 on the bracket is bored to removably support one end of a shaft 42. Another bracket 44 is fastened to the rear of the frame by screw bolts 46 and has a boss 48 which is bored to removably receive the other and smaller end of the shaft 42. As indicated in 15 Fig. 4, the shaft supports a pair of ball race rings 50 and 52 separated by a sleeve 54, the race ring 50 engaging a shoulder afforded by the larger end of the shaft. Another sleeve 56 on the shaft engages the inner wall of the boss 48 and a nut 20 58 threaded on the-smaller end of the shaft clamps the shaft and its sleeves in a fixed position. Upon removal of the nut 58, the shaft can be slid out endwise through the hole in the boss 40, the sleeves and race rings being stripped oil 25 by contact with the boss. A roller 60 is rotatably mounted on the bearings and has a groove 62 for a driving belt 64. An outer race ring 66 is held in one end of the roller by a nut 68. Another outer race ring 10 is slidably supported in the 30 other end of the roller and is pressed outwardly by coil springs 12 engaging an interposed washer 14. A nut 16 closes this end of the roller which is preferably a plain cylinder. The spring-tensioned bearings provide an initial load which in- 35 sures a true running of the roller on a line axis. The other roller 34 preferably has a similar hearing mounting to promote true running on a parallel line axis. The sleeve S to be gauged is supported. by line contact with the two rollers and 40 the adjustment of the slide l4 along its inclined ways provides means to support sleeves of any selected diameter at the same level. An inclination of 22 /2 degrees in the ways [0 will satisfy this requirement. The sleeve S is pressed against 45 the two supporting rollers by a third or pressure roller so that, when one or more of the rollers is driven, the sleeve and all the other rollers roll at the same surface speed.

The pressure roller 80 rotates around a sup- 50 porting shaft 82 removably mounted in a yoke 84 which can swivel on the head 86 of a stud 88 secured by a lock screw 90 to a block 92 which is clamped on a rod or arm 94. The block is split and can be clamped in adjusted position on the 55 arm 94 by a screw 96. This adjustment affords means to maintain the roller 80 in substantially the same angular relation to sleeves of difierent diameter, this roller being moved outwardly on the arm when the supporting roller 34 is lowered. The arm 94 is split and clamped by a screw 98 to a shaft I which is rockably mounted at one end in a lug $02 of the bracket 36 and at the other end in a lug I04 of the bracket 44. The shaft I00 has a long keyway I06 and the arm 94 has a key I08 to engage it. Adjustment of the arm along the shaft is to position the pressure roller 80 for long or short sleeves, the pressure roller preferably engaging the selected sleeve substantially centrally. A collar IIU-is clamped to the shaft I00 at one side of the lug I02, and an arm I I2 is keyed to the shaft and clamped thereon by a nut at the other side of the lug. The arm H2 is pivotally connected by a stud II4 to the eye I I6 of a vertical operating rod II8 which is guided loosely in an opening of a guide arm I on the bracket 36. The lower end of the operating rod is threaded in a coupling I22 which may be connected in any suitable way to a treadle (not shown). A coil spring I24 interposed between the guide arm I20 and adjusting nuts I26 affords the pressure tending to hold the pressure roller 80 against the sleeve to be tested. When no work is between the rollers, the movement of the operating rod I I8 and of the roller 80 is limited by stop nuts I28 engaging the guide arm I20.

The pressure roller 80 desirably has spaced ribs I32 to support the work at two locations and the swivel mounting 88 for the roller, being at an angle to the axis of the roller, insures contact of both ribs with the sleeve S. The roller has an end flange I34 engaging one end of an outer race ring of a ball bearing I36 while a nut I38 clamps the race ring in the roller. The supporting shaft 82 has a reduced portion I40 over which the inner race ring of the bearing is sleeved and a still smaller portion I42 receives a spacing sleeve I44. The larger end of the shaft 82 is removably received in one arm of the yoke 84 while the smallest portion I42 is passed through the other arm and threaded to receive a clamping nut I46 which holds the shaft, inner race ring and sleeve I44 as a unit rigidly to the yoke, sufficient clearance being left between the inner race ring and the roller parts to let the roller rotate freely on the bearing balls. Upon removal of the nut I46, the shaft is readily removed from the yoke by axial movement towards the larger end.

While the sleeve S or other work-piece is rotating on the rollers and held from endwise movement by the wabble plate hereinafter described, a tool is presented to an end face thereof. In the illustrated construction, a contact button I50 on the end of a spring pressed indicator stem rides on the end face of the sleeve and tests the length or out-of-square condition of the sleeve at all points in the periphery. The stem is arranged to slide in a line parallel to the axis of the work-piece. The indicator I52 has the usual pointer I54 and is clamped in any suitable way on a supporting stud I56. The stud has a threaded portion I58 slidable in a holder I60 which has a portion threaded in a supporting standard I62 on the frame. The holder has a slot I64 for a knurled nut I66 engaging the threaded portion of the stud to adjust the stud endwise, and a knurled nut I68 locks the stud in adjusted position. The adjustment is to set the indicator initially with respect to the sleeve and to bring the pointer to the zero of the dial.

The rollers above described hold the axis of the sleeve S always in a definite line of direction which is in the same plane with the line of contact of the sleeve with any one of the rollers and also parallel to that line when the rollers and the sleeve are cylindrical. The sleeve is restrained from axial movement by an abutment member herein shown as a wabble plate I10 which bears flatwise against that end face of the sleeve which is opposite to the spring-pressed gauge button I50. Whether the end face is square across the axis or ground on a bias, the wabble plate always conforms to it and rotates co-axially with it. The wabble plate I10 abuts against a flange I12 on a threaded holder I14 where it is held by a clamping nut I16. Both the flange and the holder are slotted for a spanner wrench. Thus, the wabble plate is easily removable and replaceable by another as when treating sleeves of another diameter. The holder has an internal spherical surface I18 which is hardened and has a universal movement on a hardened ball I80.

The holder rotates with the wabble plate and sleeve S but wear is distributed on spherical surfaces and is not of consequence inasmuch as the speed of rotation is comparatively slow. The holder has a hole I82 which has a clearance with a shouldered screw stud I84 which keeps the t holder on the ball. Preferably the center of oscillation for the wabbling motion is in the axis of the work and in the plane of the work-engaging face of the wabble plate. This work-engaging face is preferably flat and continuous in order I 7 to bear at a plurality of points spaced about the axis of the work-piece. The ball is connected by a necked-down portion I86 to a supporting rod I88 clamped to a slide I90. The slide has a tongue I92 guided in a slot I94 in a shelf I96 of the bracket 36. The slide is split at one side and the two parts are pulled together by a vertical clamping bolt I98 to grip the rod I88. The bolt has a head 200 below the shelf I96, a flat-sided portion 202 entering the slot I94 to prevent rotation, and a wing nut 204 is threaded on its upper end. The slide is adjusted to such a position that the rod I88 and wabble plate I10 are concentric with the sleeve whatever its diameter,

and all sizes of sleeves are supported with their centers in a plane parallel to the shelf. For long sleeves, the supporting rod I88 can be shifted endwise to adjusted position in the slide I90.

If the end face of the sleeve S engaged by the wabble plate I 10 is square with the axis, the plate will rotate with the sleeve without wabbling and will hold the sleeve from shifting endwise. If the end face has an inclination, the plate will wabble during rotation but will always conform to the face (tool pressure such as the spring pressure in the usual gauge stem always pressing the sleeve against the plate) and so will prevent any. axial shifting of the sleeve. Hence the gauge will indicate any out-of-square condition in the opposite face and show the variation in length at different portions of the periphery. If there is no variation in length, the gauge can be made to indicate the length either directly or by comparison with a known length. When the sleeve has internal shoulders or external flanges, the condition of such faces can be tested in a similar way. In the present machine, the holder I14 and screw I84 enter the bore of the sleeve S but the wabble plate mount-- ing is easily adapted to act as an abutment for a solid piece to be gauged.

I claim:

1. In a gauging machine, means for rotating a work-piece and maintaining its axis of rotation in a definite line, the work-piece having a face at an angle to its axis, a gauge member riding on the face of the work-piece, an abutment member engaging the work piece to prevent axial shifting thereof, and a wabbling support for the abutment member; substantially as described.

2. In a gauging machine, means for rotating a work-piece and maintaining its axis of rotation in a definite line, the work-piece having a face at an angle to its axis, a gauge member riding on the face of the work-piece, an abutment member engaging the work-piece to prevent axial' shifting thereof, and means independent of the work rotating means for supporting the abutment member for co-axial rotation with the work-piece; substantially as described.

3. In a gauging machine, means for rotating 2. work-piece and maintaining its axis of rotation in a definite line, the work-piece having a face at an agle to its axis, a gauge member riding on the face of the work-piece, an abutment member engaging the work-piece to prevent axial shifting thereof, and means for supporting the abutment member for rotation with the work-piece and for wabbling movement to compensate for out-of-square condition in the surface of the work-piece engaged by said abutment member; substantially as described.

4. In a gauging machine, means for rotating a work-piece and maintaining its axis of rotation in a definite line, the work-piece having a face at an angle to its axis, a gauge member riding on the face of the work-piece, an abutment member engaging the workpiece to prevent axial shifting thereof, a rocking support for the abutment member, and means for locating the center of rocking in the axis of rotation of the work-piece; substantially as described.

5. In a gauging machine, means for rotating a work-piece which has end faces and maintaining its axis of rotation in a definite line, a gauge member riding on one end face of the work-piece, an abutment member engaging the other end face of the work-piece to prevent axial shifting thereof, and means providing for a wabble motion of the abutment member around a center in the plane of said other end face of the work-piece; substantially as described.

6. In a machine of the character described, rollers having rolling line contact with a workpiece for rotating the work-piece and maintaining its axis of rotation in a definite line, the work-piece having a face at an angle to its axis, a gauge member engaging the face of the Workpiece, and means engaging portions of the workpiece spaced about its axis for preventing axial shifting of the work-piece on the rollers; substantially as described.

7. In a machine of the character described, roilers having rolling line contact with a workpiece for rotating the work-piece and maintaining its axis of rotation in a definite line, a gauge member engaging the work-piece, an abutment member engagina face of the work-piece for preventing axial shifting of the work-piece, and means providing a wabbling support for the abutment member to compensate for out-ofsquare condition in the face of the work-piece engaged by said member; substantially as described.

8. In a machine of the character described, rollers having rolling line contact with a workpiece for rotating the Work-piece and maintaining its axis of rotation in a definite line, a gauge member engaging the work-piece, an abutment member engaging the work-piece for preventing the axial shifting thereof, and means for supporting the abutment member for coaxial rotation with the work-piece; substantially as described.

9. In a machine of the character described, rollers having rolling line contact with a workpiece for rotating the work-piece and maintaining its axis of rotation in a definite line, a gauge member engaging the work-piece, an abutment member engaging the work-piece for preventing axial shifting thereof, and a support for the abutment member providing for rotation and a wabbling motion thereof; substantially as described.

10. In a machine of the character described, a control roller having rolling line contact with a work-piece to control rotation thereof, means for maintaining the axis of the work-piece in a plane with said line of contact, a gauge member for engaging the work-piece, and a wabble plate engaging the work-piece to prevent axial shifting thereof; substantially as described.

11. In a machine of the character described, means for rotating a round work-piece and maintaining its axis of rotation in a definite line, the work-piece having a face at an angle to its axis, a tool engaging the face of the work-piece, and a wabble plate engaging the work-piece to prevent axial shifting thereof; substantially as described.

12. In a machine of the character described, means for rotating a round work-piece and maintaining its axis of rotation in a definite line, the work-piece having a face at an angle to its axis, a tool engaging the face of the work piece, a support coaxial with the axis of the workpiece, and a wabble plate detachably carried by the support and engaging the work-piece; substantially as described.

13. In a machine of the character described, means for rotating a round work-piece and maintaining its axis of rotation in a definite line, a tool engaging the work-piece, a wabble plate engaging the work-piece to prevent axial shifting thereof, and means for adjusting the wabble plate with respect to the tool to suit the length of the work-piece; substantially as described.

14. In a machine of the character described, means for rotating a round work-piece and maintaining its axis in a definite line, the work-piece having a face at an angle to its axis, a tool engaging the face of the work-piece, a support coaxial with the axis of the work-piece, and a wabble plate detachably carried by the support, the wabble plate engaging the work-piece and rotating therewith and being positioned to oppose the pressure of the tool; substantially as described.

15. In a machine of the character described, means for rotating a work-piece having opposed faces and maintaining its axis of rotation in a definite line, a tool member and an abutment member at opposite faces of the work-piece, and a wabble support for one of said members; substantially as described.

16. In a machine of the character described,

control roller means for rotating a work-piece having opposed faces and maintaining-its axis of rotation in a definite line, a tool member and an abutment member at opposite faces of the work-piece, a

- slidable support for one of said members to the control roller, a gauge member engaging the work-piece, and an abutment opposing the gauge member; substantially as described.

18. In a machine of the character described, means for supporting and rotating a round workpiece, a gauge member and an abutment member spaced apart to receive the work-piece between them, the abutment member thereby opposing the gauge member, and a tiltable mounting-for the abutment; member; substantially as described.

19. In a machine of the character described, m ans for supporting and rotating a round workpiece, a guage member riding on the work-piece during such rotation, a. pressure roller engaging the work-piece and holding it against the supporting means, and a swivelling support for the pressure roller, the axis of swivelling being at an angle to the axis of rotation of the pressure roller; substantially as described.

20. In a gauging machine, means for rotating a work-piece having opposed end faces and maintaining the axis of the work-piece in a definite line of direction, a gauge member engaging one end face of the Work-piece as the latter rotates an abutment member mounted independently of said rotating means and engaging the other or opposed end face of the work piece at a plurality of points to prevent shifting of the work-piece in the direction of its axis, and a support providing for said independent mounting of the abutment member; substantially as described. PHILIP H. HUTCI-IINSON.

CERTIFICATE OF CORRECTION.

Patent NO 2,059,224. April 28, 1936.

HILIP H. I-IUTCHINSON.

fied that errer appear in printed specification of Page 5, secend t is hereby certi s ction as follows:

I the above numbered patent requiring eorre column, line 10, claim 8, strike out the article the" page 1-, second col-- umn, line 16, claim 20, insert a comma after "retatesE and that the said Letters Patent should be read with these eorreetiene therein that the same eenferm t0 the record. of the case in the Patent Offic Signed. and sealed this 26th day of May A. D. 19-56.

Leslie Frazer (Seal) Acting Commissioner of Patents,

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