US1785212A

US1785212A - Piston-ring peener

Info

Publication number: US1785212A
Application number: US264213A
Authority: US
Inventors: Shaw James
Original assignee: C H OEHM; F M OEHM
Current assignee: C H OEHM; F M OEHM
Priority date: 1928-03-23
Filing date: 1928-03-23
Publication date: 1930-12-16
Anticipated expiration: 1947-12-16

Description

Dec; "16,1930. J. SHAW PISTON RING PEENER Filed March 23, 1928 I m II e l u I i z- INVENTOR (fl M88 av 'Q xguAA';

- ATTORNEY Patented Dec. 16, 1930 UNITED STATES PATENT ounce Jams SHAW, or 1.00:, GALIFoBNIA, AssIeNoR or oNn -rnmn are c. x. 0mm AND F. 1:. 0mm, Born or BROOKLYN, NEW Your PISTON-RING PEENER Application filed March 23, 1928. Serial No. 264,213.

This invention relates to devices for peening piston rings such as are used in as engines and the like; my principal ob ect eing to provide a machine for this purpose by means of which the inner peripheries of piston rings of any diameter may be evenly and quickly peened, and in which adjustments may be easily made to enable rings of different widths to be handled, to alter the pressure exerted on the ring by the peening implement, and to alter the length of the are on the ring which is engaged by the peener.

A further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purpose for which it is designed. 7

These objects I accomplish by means of such structure and relative arrangements of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views Fig. 1 is a sectional elevation of my improved peening machine.

Fig. 2 is a fragmentary sectional plan taken on the line 2-2 of Fig. 1.

Fig. 3 is a similar view taken on the line 33 of Fig. 1.

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes a base and frame structureof suitable size andfrom which is provided as an integral feature with an upper horizontal table elements 2. Journaled in this structure is a vertical shaft 3 which is driven intermediate its ends from a horizontal drive shaft 4 by worm gearing 5 between the shafts. On the upper end of the shaft is removably secured a peening disk 6 of suitable character, the lower surface of which is flush with the table and overhangs the inner end of the same. Disposed beyond said end of the table in longitudinal alinement with and normall parallel to the shaft 3 is another shaft 7, which is driven adjacent its lower end from the shaft 3 by reduction gear ing 8. The lower end of said shaft is supported by a single bearing ball 9, WlllCh permits of swivel or rocking movement of the shown at 'A, both portions, however, being concentric with the shaft. Theportion A is adapted to engage a roller 11 whichis turnably mounted in a slide block 12 supported in a socket or guide member 13 mounted above thetable and disc 6. An adjustable screw 14 bears against the inner end of this block to enable the same to be moved toward orfrom the cam. Below the cam the shaft 7. is turnable and slidable in a transverse cylindrical swivel bearing member 15 which is mounted in a horizontal slide block 16. This block is guided for horizontal movement radially of and to and from the peening disc by guides l7brpounted on the frame structure beyond the ta. e.

Between the

shafts

7 and 3 and longitudinally alined therewith the block 16 carries a circumferentially grooved roller 18, the roller projecting slightly from the adjacent end of the block and the groove being horizontally alined with the peening disc. Mounted in the block 16 on the opposite side of the shaft 7 is a heavy composition spring 19. This spring bears at its inner end against the block and at its outer end against a slide 20 which is held in any desired position by a hand adj ustment screw 21 mounted on the frame struc-' ture, and by means of which the spring may be compressed as desired. The block 16 is not supported by the guides 17, but by the screw 21 at one end, and by a roller R at the other. i 1

In operation it will be seen that with the rotation of the drive shaft4, the

shafts

3 and 7 will be likewise rotated." The cam 10 on the shaft 7 engaging the roller 11, causes said shaft to be alternately swung to and from the shaft 3 against the resistance offered by the spring 19; and the rollerv 18 likewise of course moves to and from the disc 6. If no ring is disposed between the peening disc and the roller 18, the cam will remain constantly engaged with the roller 11.

If, however, a piston ring 22 is in place to be peened so that its inner periphery will be engaged by the peening disc and its adjacent outer surface is disposed toward the roller 18, then the cam will be separated from the roller 11 when the enlarged portion A thereof leaves said roller as shown in Fi 1. The pressure of the spring 19 is then ree to act without restraint to press the roller 18 firmly against the ring, and the latter into pressing engagement with the peening disc. With the rotation of the shaft 3, therefore, the ring will be turned horizontally by the rotative effect imparted by said peening disc, which at the same time peens the surface engaged thereby. The circumferential extent of engagement of the peening disc with the ring depends upon the circumferential extent of the relatively small portion of the cam 10, the relative speed of rotation of the

shafts

3 and 7 and the size of the peening disc; since as soon as the large cam portion A engages the roller 11, the shaft 7 7 and parts connected therewith will move away from the ring and the latter will be released from pressing engagement with the peener. I i

The spacin between the roller 18 and the peening disc is then suflicient to enable the ring to be readily withdrawn and another one placed in position, the speed of the shaft 7 being slow enough to enable this to be easily done before the enlarged portion A of the cam clears the roller 11 and allows the spring 19 to again press the roller 18 towards the peener. The roller 18 being grooved and the ring entering said groove, the ring cannot ssibly shift vertically while being acted on y the peening disc. The pressure holding the ring engaged with the peener, and consequently the peening action, is regulated by the adjustment of the spring 19 as will be evident. 1

Adjustment of the block 12 to or from the cam enables the spacing between the roller 11 and the peener to be altered so as to accommodate the machine to rings of clifferent widths, while insuring ample space between theroller 18 and the peener being had for the removal of the ring when said roller moves away from the peener.

The use of the single ball support for the lower end of the shaft 7 permits of the necessary swivel movement of said shaft without strain. The gearing between said shaft and the shaft 3 being at the lower end of-the shaft 7, permits such swivel movement to take place without unmeshing the gears, since the shaft movement at this point is very slight as will be obvious.

The member 18 is supported from the main frame structure by side extensions 13a which are disposed sufficiently far apart so that rings of practically any size may be supported on the table and worked on by the peening disc without interference with such extensions.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

l/Vhile this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

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

1. A piston-ring peener including a peening disc, means for rotating the disc, a mem ber. horizontally alined with the disc and spaced relative thereto to enable the width of a ring being received between the disc and said member, pressure means acting to force the member toward the disc to cause the ring to be frictionally engaged by the disc, and means for moving said member away from the ring at predetermined intervals against the resistance offered by the pressure means.

2. A structure as in claim 1, with means for enabling the effectiveness of the pressure means to be altered at will.

3. A structure as in claim 1, with means for enabling the normal spacing of said member from the disc to be altered at will.

4. A piston-ring peener including a peening disc, means for rotating the disc, a roller horizontally alined with the disc and spaced relative thereto to enable the width of a ring being received between the roller and disc, a horizontally slidable support for the roller movable radially to and from the disc to press the ring against the disc, a spring acting on the support for forcing the same toward the disc, and means functioning with the rotation of the disc for moving the support away from the disc at recurrin intervals a distance sufficient to enable t e ring to be withdrawn.

5. A piston-ring peener including a peening disc, means for rotating the disc, a roller horizontally alined with the disc and spaced relative thereto to enable the width of a ring being received between the roller and disc, a horizontally slidable support for the roller movable radially to and from the disc, a spring acting on the support for forcing the same toward the disc, a rotatable cam disc, means connecting said cam with the support, means for rotating the cam, and a relatively fixed member disposed to be engaged by the cam; the latter being arranged relative to the support and member to cause the rotation of the cam to intermittently move said support against the resistance of the spring.

6. A piston-ring peener including a peening disc, a shaft for driving the same, a second shaft substantially parallel to said first named shaft, a swivel support for one end of said second shaft, drive connections between the shafts, a block through which said second shaft passes, a swivel bearing connec- 5 tion between the blockand shaft, a roller mounted in the block in parallel and horizontal alinement with the disc, and spaced therefrom a suflicient distance to enable the width of a ring being received between said roller and disc, spring means acting to force the block toward the disc radially thereof, and means applied to said second shaft for causing the block to be moved away from the disc at recurring intervals.

7. A pistomring peener including a peening disc, a shaft for driving the same, a second shaft substantially parallel to said first named shaft, a swivel support for one end of said second shaft, drive connections between the shafts, a block through which said second shaft passes, a swivel bearing connection between the block and shaft, a roller mounted in the block in parallel and horizontal alinement with the disc, and spaced therefrom a sufficient distance to enable the width of a ring being received between said roller and disc, sprin means acting to force the block toward t e disc radially thereof, a cam-disc on the second shaft, and a'relatively fixed member to be engaged by the disc during a certain portion of a revolution thereof and arranged to cause the second shaft to swivel on its first named bearing and the block to be moved away from the disc.

In testimony whereof I aflix m si ature.

JAMES S AW.