CN210756806U

CN210756806U - Special clamp for grinding large-batch bearing inner rings

Info

Publication number: CN210756806U
Application number: CN201921511294.9U
Authority: CN
Inventors: 孟德章; 王砚军; 高鹏远; 刘雷; 周欣
Original assignee: University of Jinan
Current assignee: University of Jinan
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-06-16
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a special clamp for grinding large-batch bearing inner rings, which comprises a clamp body and a retaining seat, the clamp bodies comprise six same clamp bodies which are concentrically arranged, trapezoidal sliding blocks are processed at the bottoms of the 6 same clamps, the clamp body can move on the guide groove by matching the taper with the guide groove, 3 threaded holes are arranged on the clamp body, the locking countersunk head threaded holes are matched with the screws, the clamp body can be fixed by a screw in the clamping process, the holding seat is in a cylindrical shape, a guide groove with a trapezoidal section shape is arranged on the holding seat, besides the guide groove, the holding seat is also provided with a plurality of chip grooves, and the grinding chips are discharged from the chip grooves through cooling liquid in the processing process, the holding seat is turned with a plurality of scale marks with equal intervals, so that the specific position of the clamp can be conveniently and roughly judged in clamping. The utility model discloses make the clamping of bearing inner race grinding processing can realize quick, accurate location to can make the grinding machine carry out the bearing inner race abrasive machining of multiple model.

Description

Special clamp for grinding large-batch bearing inner rings

Technical Field

The utility model relates to a bearing parts machining technical field especially relates to an anchor clamps that is used for big batch processing bearing inner race.

Background

The bearing is an important part in the mechanical industry, and the precision of the bearing directly influences the working condition of equipment, so that the quality and the service life of the equipment are directly influenced. Rolling bearings are increasingly widely used in various industries, and the demand of the bearings is also increasing. With the continuous expansion of the application field of the rolling bearing and the continuous progress of the technology, the structure of the rolling bearing is more and more complex. The bearing with high quality grade and high precision is produced, and besides a reasonable and advanced processing technology and advanced bearing quality detection equipment, a proper special clamp is required to be ensured in the grinding process. The grinding of bearing inner ring workpieces is always a difficult problem in grinding of bearing manufacturing enterprises. The common method is that a special grinding machine is used for grinding bearings of single or several models, the bearings are aligned on a chuck one by one, a support frame is required to be arranged below the chuck to support and fix the bearings, each end face is machined, and each clamp is only suitable for one type of bearing. Therefore, under the condition that the bearing parts are produced in large scale and the types of the bearings are various, how to effectively improve the machining efficiency of the bearings without increasing the machining cost becomes a problem to be solved urgently.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the fixture for machining the bearing inner ring in large batch is provided, so that the clamping of the bearing inner ring can be realized universally, quickly and accurately under the assistance of the fixture.

The utility model provides a technical scheme that its technical problem adopted is: a special clamp for grinding large-batch bearing inner rings comprises a clamp body and a holding seat, wherein the clamp body comprises six clamp bodies which are concentrically arranged and have the same size, a trapezoidal sliding block is arranged at the bottom of the clamp body and matched with a guide groove through taper with self-locking characteristic to ensure that the clamp body cannot be separated from the guide groove in the machining process, the clamp body can move back and forth on the guide groove, three locking countersunk head threaded holes are formed in the clamp body and are matched with screws, the clamp body can be fixed through the screws in the clamping process, the position of the clamp can be adjusted and fixed according to the inner diameter of a machined bearing part in the clamping process, the holding seat is in a cylindrical shape, a plurality of chip grooves are additionally machined on the holding seat besides the guide groove, and abrasive dust is discharged from the chip grooves through cooling liquid in the machining process, the holding seat is turned with a plurality of scale marks with equal intervals, so that the specific position of the clamp can be conveniently and roughly judged in clamping.

Furthermore, the bottom of the guide groove of the retaining seat is provided with a locking countersunk head threaded hole.

Furthermore, a trapezoidal sliding block with a self-locking characteristic is arranged at the bottom of the clamp body.

Furthermore, the end of the clamp body is provided with a locking countersunk head threaded hole.

Further, the width of the locking countersunk head threaded hole is 20mm, and the depth of the locking countersunk head threaded hole is 40 mm.

Furthermore, the cross section of the guide groove is in a trapezoid shape, and the cross section of the chip groove is in a rectangular shape.

Furthermore, the guide groove and the chip groove point to the same circle center.

Further, the scale marks are circular and are equally spaced.

The utility model has the advantages as follows:

1. the utility model discloses enlarged numerically control grinder's process range, made the grinding machine possess the ability of multiple model bearing processing simultaneously, the precision has surpassed general fixture's precision far away, has improved machining efficiency and has reduced the processing cost simultaneously.

2. The utility model simplifies the installation, disassembly and cleaning of the clamp, reduces the vibration of the clamp in the working process and reduces the processing error through the screw fixation and the design of the trapezoidal slide block at the bottom of the clamp body;

3. the utility model discloses a set up the chip groove, make the abrasive dust get rid of along with the coolant liquid faster in the course of working.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the overall structure of the present invention;

FIG. 3 is a left side view of the overall structure of the present invention;

FIG. 4 is a schematic structural view of the holder of the present invention;

fig. 5 is a front view of the clamp body of the present invention;

fig. 6 is a partial enlarged view of the trapezoidal slider of the clamp body of the present invention.

Fig. 7 is a left side sectional view of the clamp body of the present invention.

In the figure, the locking device comprises a holding seat 1, a holding seat 2, a holding seat 3, scale marks 4, a guide groove 5, a chip groove 6, a locking threaded hole 7, a trapezoidal sliding block 8 and a locking countersunk threaded hole.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

The special fixture for grinding the large-batch bearing inner rings comprises a holding seat 1 and a fixture body 2, wherein the holding seat 1 is cylindrical, a plurality of chip grooves 5 are additionally machined on the holding seat in addition to guide grooves 4, abrasive dust is discharged from the chip grooves through cooling liquid in the machining process, and a plurality of scale marks 3 with equal intervals are turned on the holding seat, so that the fixture body position can be roughly judged in the clamping process. The anchor clamps body 2 includes six the same anchor clamps bodies that set up with one heart, 6 the same anchor clamps of phase pass through guide way 4 and link to each other with the holding seat, and the anchor clamps body 2 can move on guide way 4, is equipped with 3 locking countersunk head screw holes 8 on the anchor clamps body, locking countersunk head screw hole suits with the screw, and accessible screw is fixed the anchor clamps body in the clamping.

As shown in fig. 5 and 6, the bottom of the clamp body further comprises a trapezoidal sliding block, and the clamp body 5 is matched with the guide groove 4 on the retaining base 1 through the taper with the self-locking characteristic, so that the clamp body 5 and the retaining base 1 are not separated from each other up and down in the whole machining process, and the normal machining is ensured.

Fig. 1 is an overall structure schematic diagram of the fixture, and in the processing process, the position of the fixture body can be adjusted according to different types of the processed bearing inner ring, and the fixture body 2 is fixed through three locking countersunk head threaded holes 8.

Specifically, the width of the locking countersunk head threaded hole is 20mm, and the depth is 40 mm.

Specifically, the section of the guide groove is in a trapezoidal shape, and the section of the chip groove is in a rectangular shape.

Specifically, the scale marks turned on the holding seat are circular, and the spacing distance is 6 cm.

Specifically, the trapezoidal sliding block at the bottom of the clamp body is matched with the guide groove on the retaining seat to form self-locking.

The utility model enlarges the processing range of the numerical control grinding machine, and enables the grinding machine to have the processing capability of bearings of various types, and the precision of the grinding machine far exceeds the precision of a universal fixture; the installation, the disassembly and the cleaning of the clamp are simplified, the vibration of the clamp in the working process is reduced through the screw fixation and the design of the trapezoidal sliding block at the bottom of the clamp body, and the machining error is reduced; by arranging the chip grooves, the abrasive dust can be removed more quickly along with the cooling liquid in the machining process.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a special fixture that is used for big bearing inner race to grind processing which characterized in that: including the anchor clamps body and holding seat, the anchor clamps body is including six same anchor clamps bodies that set up with one heart, six same anchor clamps pass through the slider and link to each other with guaranteeing the guide way, and the anchor clamps body can carry out the back-and-forth movement on the guide way, and anchor clamps body bottom is equipped with trapezoidal slider, and tapering and guide way cooperation through having the auto-lock characteristic are equipped with three locking countersunk head screw hole on the anchor clamps body, locking countersunk head screw hole suits with the screw, and accessible screw is fixed the anchor clamps body in the clamping, the holding seat is the cylinder shape, still processes a plurality of chip grooves in addition except that having trapezoidal guide way on the holding seat, and the abrasive dust passes through the coolant liquid and discharges from the chip groove in the course of working, still car has the scale mark that a plurality of intervals equal on the holding seat, and the convenience is roughly judged the anchor clamps body position in the clamping.

2. The special fixture for grinding the large-batch bearing inner rings according to claim 1, is characterized in that: the 6 clamp bodies are uniformly arranged on the holding seat through guide rails.

3. The special fixture for grinding the large-batch bearing inner rings according to claim 1, is characterized in that: the end part of the clamp body is evenly provided with 3 locking threaded holes.

4. The special fixture for grinding the large-batch bearing inner rings according to claim 1, is characterized in that: the slider at the bottom of the fixture body is in a trapezoidal shape.

5. The special fixture for grinding the large-batch bearing inner rings according to claim 1, is characterized in that: the holding seat is in a cylindrical shape, and chip grooves, guide grooves and scale marks are machined in the holding seat.

6. The special fixture for grinding the large-batch bearing inner rings according to claim 1, is characterized in that: the cross section of the chip groove is rectangular, and the cross section of the guide groove is trapezoidal.

7. The special fixture for grinding the large-batch bearing inner rings according to claim 1, is characterized in that: the scale marks on the holding seat are circular, and the intervals between every two scale marks are equal.