CN102275117B - Oilstone jig for ultra-finishing of bearing grooves - Google Patents

Abstract

A whetstone jig used for superfinishing of bearing grooves, the whetstone jig includes a swing head body, a whetstone installation hole and a swing rod, a stepped hole is arranged in the swing head body along its axial direction, and one end of the swing rod passes through the step hole and The body of the oscillating head is connected with each other, and there is a rotating pair between the body of the oscillating head and the oscillating rod. There are two mounting holes for oil stones on the body of the oscillating head. On the side, the oil stone is fixedly installed in the oil stone installation hole. The present invention is used for the superfinishing of the bearing groove. The main body of the oilstone jig is provided with two positions for installing the oilstone, which can realize two working steps of rough grinding and fine grinding, simplify the structure of the machine tool, and improve the processing efficiency. There is clearance fit between the hole of the swing head body and the shaft at the end of the swing rod. Simultaneously, the length of the swing rod shaft is slightly greater than the length of the installation hole in the swing head body, which is convenient for adjusting the position of the swing head body.

Description

Oilstone jig for ultra-finishing of bearing grooves

technical field

The invention relates to mechanical processing equipment, in particular to a bearing groove finishing equipment, in particular to an oil stone fixture for superfinishing of a bearing groove.

Background technique

The ultra-finishing processing technology of the bearing groove (channel) of the bearing is a kind of final processing technology of the groove (channel) generally adopted by the manufacturing enterprises. Due to its high processing accuracy requirements, higher requirements are put forward for the oil stone and the processing technology. . At present, the one-sequence two-step superfinishing method is widely used, that is, the superfinishing of the bearing groove (channel) is divided into two steps of rough superfinishing and fine superfinishing. There are two superfinishing heads and two oilstones respectively, and two A set of driving mechanism controls for super-finishing processing. Therefore, the structure of the machine tool is complex and the processing efficiency is low. Chinese utility model patent "Superfinishing head for superfinishing conical and cylindrical bearing channels" (application date March 22, 2004, authorization announcement date March 16, 2005, authorization announcement number CN 2685002Y) discloses a super Fine head, although there are two pressure plates to install two oil stones, but each of the two oil stones needs a driving device, and the oil stone in this ultra-fine head can only move in a straight line, so it can only be used for cones and cylinders whose generatrix is a straight line The fine grinding of the bearing groove cannot be used for the processing of the deep groove ball bearing groove whose generatrix is an arc line.

Contents of the invention

The object of the present invention is to provide a kind of oilstone jig used for super-finishing of bearing grooves. The described oilstone jig for super-finishing of bearing grooves needs two One ultra-precision head and two sets of control mechanisms lead to technical problems with complex machine tool structures.

The object of the present invention is achieved through the following technical solutions: the whetstone fixture includes a swing head body, a whetstone installation hole and a swing rod, a stepped hole is arranged in the swing head body along its axial direction, and one end of the swing rod passes through the step hole and the swing head The main body is connected, and there is a rotating joint between the swing head body and the swing rod. There are two oil stone installation holes on the swing head body. The two oil stone installation holes are located on both sides of the axis of the swing head body in the shape of "eight". The included angle between the axes of the two oil stone installation holes is 5°~15°. The oil stone is fixedly installed in the oil stone installation hole. There is a shaft at one end of the swing rod, and the shaft matches the stepped hole in the swing head body. , the outer diameter of the shaft is slightly smaller than the inner diameter of the small end of the stepped hole, and the length of the shaft is slightly larger than the length of the small end of the stepped hole.

A threaded hole is provided on the side wall of the oilstone installation hole, and the oilstone is fixed in the oilstone installation hole by set screws.

Gaskets are arranged between the small end faces of the stepped holes and the screws.

Compared with the prior art, the present invention has positive and obvious effects. There are two positions for installing the oilstone in the body of the oilstone jig used for superfinishing of the bearing groove, which can realize two working steps of rough superfinishing and fine superfinishing, simplify the structure of the machine tool and improve the processing efficiency; at the same time, due to the pendulum The rod drives the body of the swing head, thereby driving the oilstone mounted on it to swing back and forth around the center line of the arc groove of the bearing being processed, so the fixture can be used for the finishing process of the groove of the deep groove ball bearing. There is clearance fit between the hole of the swing head body and the shaft at the end of the swing rod, and at the same time, the length of the swing rod shaft is slightly greater than the length of the installation hole in the swing head body, which is convenient for adjusting the position of the swing head body.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the assembly structure of the swing head and the swing rod in the present invention.

Fig. 3 is a schematic diagram of the structure of the swing head body in the present invention.

Fig. 4 is a schematic diagram of the structure of the swing rod in the present invention.

Fig. 5 is a working diagram of the present invention.

Detailed ways

The present invention will be described in further detail below through embodiments in conjunction with the accompanying drawings.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, the whetstone fixture includes a swing head body 1, a whetstone installation hole 2 and a swing rod 3, and the swing head body 1 along its axis A stepped hole 4 is provided to one end of the swing rod 3, and one end of the swing rod 3 is connected with the swing head body through the step hole. The stepped hole 4 in the swing head body matches, and the outer diameter of the shaft 31 is slightly smaller than the inner diameter of the small end of the stepped hole 4, so that there is a gap fit between the stepped hole 4 and the shaft 31 to form a revolving pair. The length of the shaft 31 is longer than the stepped hole 4 The length of the small end is slightly larger, and the end of the shaft 31 is provided with a threaded hole 32 to be connected with the screw 7. The outer diameter of the screw 7 is greater than the diameter of the small end of the stepped hole and smaller than the diameter of the large end of the stepped hole. A spacer 8 can be arranged between the left end faces of the stepped holes of the main body, and the end of the shaft 31 is connected with the screw 7, and there is a gap between the screw 7 and the right end face of the stepped holes to ensure that the swing head body can rotate freely around the swing rod . There are two oil stone installation holes 2 on the swing head body 1, and the two oil stone installation holes 2 are arranged in the shape of "eight" on both sides of the axis of the swing head body 1, that is, the two oil stone installation holes 2 are in the shape of "eight". It is located on both sides of the axis of the stepped hole of the swing head body. The angle between the two axes of the two oilstone installation holes is suitable for the diameter of the bearing channel to be processed. The value of the angle is 5°~15°. If the diameter of the bearing channel is large, choose a larger included angle. The oil stone 5 is fixedly installed in the oil stone installation hole 2. There is a threaded hole 21 on the side wall of the oil stone installation hole 2. The oil stone 5 is fixed in the oil stone installation hole by the set screw 6. .

As shown in Figure 5, when working, the swing rod 3 drives the swing head body 1, thereby driving the oil stone 5 installed in the swing head body to swing back and forth around the center line of the processed workpiece 9 grooves, so as to realize the overshoot of the workpiece groove. Refined processing.

In addition to the above solutions, the body of the swing head can be connected with the swing rod through precision bearings; the inner side of the upper end of the oilstone installation hole can be slightly inclined outward, which is convenient for installing the oilstone.

Claims (3)

1. oilstone anchor clamps that are used for the super lappingout of bearing channel, it is characterized in that: these oilstone anchor clamps comprise the yaw body, oilstone installing hole and fork, be axially arranged with shoulder hole along it in the yaw body, fork one end is connected with the yaw body by this shoulder hole, be provided with revolute pair between yaw body and the fork, the yaw body is provided with two oilstone installing holes, these two oilstone installing holes are " eight " font and are located at yaw body axis both sides, corner dimension value between these two oilstone installing hole axis is 5 ° ~ 15 °, oilstone is fixedly installed in the oilstone installing hole, be provided with axle at fork one end, axle matches with shoulder hole in the yaw body, the external diameter of axle is slightly less than shoulder hole small end internal diameter, the length of axle is more bigger than the length of shoulder hole small end, the tip of the axis is provided with screwed hole and is connected with screw, and the external diameter of this screw is greater than the shoulder hole end diameter, less than the shoulder hole outside diameter.

2. oilstone anchor clamps for the super lappingout of bearing channel as claimed in claim 1, it is characterized in that: be provided with screwed hole at oilstone installing hole sidewall, oilstone is fixed in the oilstone installing hole by holding screw.

3. the oilstone anchor clamps for the super lappingout of bearing channel as claimed in claim 2 is characterized in that: be provided with pad between shoulder hole small end face and the screw.

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