US3094820A

US3094820A - Honing stone retainer

Info

Publication number: US3094820A
Application number: US216268A
Authority: US
Inventors: William F Hannon
Original assignee: Fafnir Bearing Co
Current assignee: Fafnir Bearing Co
Priority date: 1962-08-01
Filing date: 1962-08-01
Publication date: 1963-06-25
Anticipated expiration: 1980-06-25

Description

June 25, 1963 w. F. HA NNON 3,094,820

, HONING STONE RETAINER w Original Filed April 20. 1966 2 Sheets-Sheet 1 v 4 1 19 a 17 I 181? 16 INVENTOR. Mzz/m/ [fi m/NON iTTOP/VEYS June 25, 1963 w. F. HANNON HONING STONE RETAINER Original Filed April 20. 1960 2 Sheets-Sheet 2 I IN V EN TOR. Ma MM/TMAWQA/ United States Patent Connecticut Continuation of application Ser. No. 23,422, Apr. 20, 1960. This application Aug. 1, 1962, Ser. No. 216,268

8 Claims. (Cl. 51-1841) This invention relates to honing machinery generally and, more particularly, to a device to retain a honing stone for use in such machinery.

This application is a continuation of application Serial No. 23,422, filed April 20, 1960, now abandoned.

A principal object of the invention is to provide a new and improved structural arrangement for a honing stone retainer.

Another object of the invention is to provide a honing stone retainer which will permit more accurate control over the relative pressure between the honing stone and the work piece.

Still another object of the invention is to provide a device to retain honing stones of extremely small dimensions.

Yet another object of this invention is to provide a honing stone apparatus which can operate on very small rings, such as about 01150" in diameter.

Briefly, one form of the invention provides a body having a channel terminating in a honing stone chamber such that a fluid under pressure, such as air pressure for example, can be connected to the channel and com- 'municated to one end of a honing stone. By this arrangement, the honing stone itself acts as a piston, and the honing action on a work piece is controlled accurately by varying the pressure of the fluid.

The above and other objects and advantages of the invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. '1 is a bottom-side perspective view of a honing stone retainer in accordance with the principles of the invention;

' FIG. 2 is a plan view diagrammatically showing a honing machine with which the retainer of the invention is adapted for use;

FIG. 3 is a view taken along the line 3-3 in FIG. 2; and

FIG. 4 is a view taken along the line 44 in FIG. 3.

Referring now to the form of the invention shown in the drawing, the numeral identifies the honing stone retainer generally, the retainer having a body 11 terminating at one end in a plurality of threads 12 and in a honing stone receiving or head end 13. While the body 11 may take any desired configuration, it is shown in the drawings as being elongated or rod-shaped.

The head end 13 is provided with a chamber 14 with an axis transverse to the longitudinal axis of the body 11 and with an opening externally of the head end 13. The dimensions of the chamber 14 are appropriate to receive a honing stone 15 (FIG. 3) in relatively close fitting relationship therewith.

To communicate a fluid pressure to the chamber 14, a channel 16 extends along the axial length of the body 11 and terminates at the innermost end of the chamber 14, as best seen in FIG. 3 of the drawings.

The opposite end of the :body 11 from the chamber 14, terminates in a threaded end 12, as mentioned previously, for connection with a suitable fluid pressure line 17. An adapter 18 may be used when it is necessary to fit the threaded end 12 to a line 17 having threads of a different character from the threads 12. While any suitable connection means may be used to connect the chan- 3,094,820 Patented June 25, 1963 nel 16 to a suitable fluid pressure line 17, a threaded means is shown in the drawings for illustrative purposes.

A flange 19 extends radially from the outer surface of the body 11 and may be formed integrally therewith in some instances. However, in the preferred form of the invention, the flange 19 is a separate unit and is attached to the body 11 by a screw 20, FIG. 3. When using the honing stone retainer of the invention with a honing machine, it is essential that the stone 15 be accurately positioned longitudinally of the axis of the machine, and the flange 19 serves this purpose. When the flange 19 is a separate unit, its position may be shifted by loosening the screw 20 as will be understood. The use of the honing stone retainer in a honing machine will be described in greater detail presently.

As mentioned previously, the dimensions of the chamber 14 are suitable to receive a honing stone 15 in relatively close sliding frictional relationship. However, to ensure that the stone '15 does not drop out of the chamber 14 in the event the dimensions of the chamber 14 are not sufliciently close to hold the stone 15 in place by friction alone, a small aperture 30, Fl-G. 4 is formed laterally in the head 13, and the inner end of the aperture 30 is formed suitably to permit a ball 31 to prortude therethrough. That is, a flange 32 extends circumferentially about the inner end of the aperture 30 as best seen in FIG. 4.

With a .ball 31 in place, a coil spring 33 is inserted thereafter and pressure is applied against the ball 31 by adjustment of a screw 34. It will be understood that only a slight pressure is needed on the ball 31.

The ball 31 presses the honing stone 15 against the opposite side of the chamber 14 to increase the frictional force holding the stone 15 within the chamber 14. Therefore, it may be seen that the requirements for the circumferentially extending flange 32 is that it reduce the diameter of the aperture 30 to a dimension just slightly less than the diameter of the ball 31. By this means, the ball 31 cannot drop into the chamber 14 when the honing stone 1-5 is removed. Yet, the ball 31 may move outwardly and inwardly relative to the inner end of the aperture 30 by an amount slightly less than its radius.

-In operation, the retainer 10 is inserted within an aperture 40, FIG. 3, of a rocker arm 41, FIG. 2, and a screw 42 is tightened to fix the retainer 10in position. As mentioned previously, the flange 19 is attached to the retainer 10 to position the retainer 10 accurately within the aperture 40.

By the application of a suitable fluid pressure to line 43, FIG. 2, the piston rod 44 is retracted to a loading position, so that a work piece 45 is dispensed onto a pair of

shoes

46 and 47. Then, fluid in the line 43 is relieved and pressure is applied to the line 48 whereby the rod 44 moves forwardly and upwardly carrying the

shoes

46 and 47 and the work piece 45 therewith. The upward movement is accomplished by another cylinder (not shown).

In this instance, the Work piece 45 'is the outer ring of a hearing which is to be honed on the inner surface thereof. j

To position the work piece 45 accurately for hon-ing, a hollow cyl-indrically shaped member 50 is fixedly attached to the end of the rod 44 to bear tightly with a iirlctional force against the circumference o'f'the work piece 45 and press it tightly against

rollers

51 and 52. Then, a suitable power means (not shown) turns the cylindrical member 50 at a predetermined speed, turning the work piece 45 therewith. I With the work piece 45 in position against the

rollers

51 and 52, suitable fluid pressure isxapplied through the channel 16 to the inner end of the chamber 14 to urge the honing stone 15 against the Work piece with a force which is proportional to the pressure of the fluid. The rotation of the work piece 45 with the honing stone in position together with a rocking action by the rocker arm 41 accomplishes the honing action.

With the honing operation completed, the fluid pressure against the stone 15 is relieved, and the work piece is lowered and retracted to achieve disengagement. The ball 31 and spring 33 maintains the honing stone 15 within the chamber 14.

It is essential that the pressure in the chamber 14 and in the channel 16 be relieved prior to disengagement with the work piece. Otherwise, the honing stone 15 would be ejected from the chamber 14 by the fluid pressure. Therefore a suitable interlocking valve system, illustrated in FIG. 4 by the numeral 53, is connected to the fluid pressure line 17 to relieve the pressure in the line 17 before the rocker arm 41 is movable.

As viewed in FIG. 2, the rocker arm 41 is supported between spaced apart

journals

56 and 57, and movement of the rocker arm 41 is controlled by a suitable linkage indicated generally by the numeral 58.

Although the honing stone 15 fits in relatively close fitting relationship Within the chamber 14, the pressurized fluid within the channel 16 is dispensed around the periphery of the boning stone 15 to lubricate the honing action automatically.

It is understood that variations in the form and details of the embodiment shown and described may be made without departing from the principles of the invention. Therefore, it is the intention to be limited only as indicated by the scope of the appended claims.

1 claim:

-1. A honing stone retainer comprising a body menu ber having a bore therein,

means on said body me ber to connect a source of pressurized fluid with said bore,

said body member having a chamber in communication with said bore,

and said chamber being dimensioned to receive a honing stone therein in close-fitting but axially movable relationship,

said fluid flowing through said bore and communicating directly with said chamber to contact said honing stone and to exert pressure directly upon said honing stone, whereby the pressure upon said honing stone may be varied in accordance with variations in said fluid pressure,

said pressurized fluid being dispensed around the peripheral fit of said honing stone to lubricate the honing action automatically.

2. A honing stone retainer comprising a body member having a bore therein,

means to connect a source of said bore,

said body member having an elongated chamber in communication at one end with said bore,

and said chamber having an aperture opening externally thereof at the opposite end to receive a honing stone within said chamber in relatively close-fitting but avially movable relationship,

3. A honing stone retainer comprising a body member having a longitudinal axis, a

said body member having an elongated chamber the axis of which is transverse to the longitudinal axis of said body member,

pressurized fluid with means on the elongated axis of said chamber to define an opening externally of said chamber,

the dimensions of said opening being predetermined to receive a honing stone in relatively close-fitting sliding relationship therewith,

and means to communicate a pressurized fluid to the inner end of said chamber,

4. A honingstone retainer comprising a body member having one axis,

means to define a chamber in said body member with a second axis transverse said one axis of said body member,

means on said second axis to define an opening externally of said chamber,

the dimensions of said opening being predetermined to receive a honing stone in relatively close-fitting but axially movable relationship therewith,

and means to communicate a pressurized fluid to the inner end of said chamber,

said fluid flowing through said body and communicating directly with said chamber to contact said honing stone and to exert pressure directly upon said honing stone, whereby the pressure upon said honing stone may be varied in accordance with variations in said fluid pressure,

said pressurized fluid being dispensed around the peripheral fit of said honing stone to lubricate the houing action automatically.

5. A honing stone retainer comprising a body member having one axis,

means on said second axis to define an opening externally of said chamber,

the dimensions of sad opening being predetermined to receive a honing stone in relatively close-fitting relationship therewith,

means to communicate a pressurized fluid to the inner end of said chamber,

and means to cut oil communication of said fluid pressure before terminating a honing operation,

6. A honing stone retainer comprising an elongated body member having a longitudinal axis,

a flange fitted about said elongated body member,

means on said flange to detachably fix said flange to said body member at a predetermined position,

said body member having a channel extending substantially throughout the length of the elongated body member,

means at one end of said channel to connect a source of pressurized fluid,

the opposite end of said channel terminating in a chamber extending substantially transverse to said longitudinal axis and opening externally of said body member at a point removed from said channel,

the cross-sectional dimensions of said chamber being predetermined to receive a honing stone in relatively close-fitting but axially movable relationship,

7. A honing stone retainer comprising a body member having a bore therein,

means on said body member to connect a source of pressurized fluid with said bore,

said body member having a chamber in communication with said bore,

said pressurized fluid being dispensed around the peripheral fit of said honing stone to lubricate the honing action automatically, and said retainer having holding means engageable with said honing stone to prevent said stone from dropping from said retainer when said honing stone is not acting upon an object. 8. The retainer of claim 7 in which said holding means comprises a spring biased detent.

References Cited in the file of this patent UNITED STATES PATENTS

Claims

1. A HONING STONE RETAINER COMPRISING A BODY MEMBER HAVING A BORE THEREIN, MEANS ON SAID BODY MEMBER TO CONNECT A SOURCE OF PRESSURIZED FLUID WITH SAID BORE, SAID BODY MEMBER HAVING A CHAMBER IN COMMUNICATION WITH SAID BORE, AND SAID CHAMBER BEING DIMENSIONED TO RECEIVE A HONING STONE THEREIN IN CLOSE-FITTING BUT AXIALLY MOVABLE RELATIONSHIP, SAID FLUID FLOWING THROUGH SAID BORE AND COMMUNICATING DIRECTLY WITH SAID CHAMBER TO CONTACT SAID HONING