Micro-precision angular contact ball bearing limit speed tester

Abstract

The application provides a micro-precision angular contact ball bearing limit speed testing machine, which comprises a base and a motor, a ring block and a test shaft are arranged on the base, one end of the test shaft penetrates into the ring block to form a test station for installing a bearing to be tested, a first connecting part is arranged on the test shaft, the motor comprises a second connecting part on an output shaft, a plurality of first connecting holes and a plurality of second connecting holes are arranged on the first connecting part and the second connecting part respectively, and the first connecting holes and the second connecting holes can be connected by a connecting line to form a flexible connection between the first connecting part and the second connecting part. In view of the defects of the prior art, the micro-precision angular contact ball bearing limit speed testing machine provided by the application is designed to be flexibly connected and can avoid aggravating damage.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bearing test device, especially to a micro-precision angular contact ball bearing limit speed tester. BACKGROUND

[0002] As the core equipment of attitude perception and motion control, the gyroscope has been widely used in aerospace, navigation, navigation, robot and other fields. The micro-precision angular contact ball bearing is arranged in the gyroscope as the core rotating supporting component, and the performance of the micro-precision angular contact ball bearing directly determines the operation precision, stability and service life of the whole machine, and is an important "joint" element. However, in the test process, the motor output shaft and the test shaft of the tester in the prior art are rigidly connected, and when the workpiece end occurs serious jamming phenomenon during operation, the workpiece is easily damaged. SUMMARY

[0003] In view of the defects of the prior art, the present application provides a micro-precision angular contact ball bearing limit speed tester with flexible connection design and damage prevention.

[0004] In order to achieve the above-mentioned purpose, the present application provides a micro-precision angular contact ball bearing limit speed tester, which comprises a base and a motor. The base is provided with a ring block and a test shaft. One end of the test shaft penetrates the ring block to form a test station for installing the bearing to be tested. The test shaft is provided with a first connecting part. The motor comprises a second connecting part on the output shaft. The first connecting part and the second connecting part are respectively provided with a plurality of first connecting holes and a plurality of second connecting holes. The first connecting holes and the second connecting holes can be connected by a connecting line to form a flexible connection between the first connecting part and the second connecting part.

[0005] The advantages of the above technical solution are: by arranging a plurality of connecting holes on the first connecting part of the test shaft and the second connecting part of the motor output shaft, and using the connecting line to form a flexible connection, compared with the rigid connection of the prior art, on the one hand, the additional stress caused by the motor vibration and the shaft system coaxiality deviation can be effectively buffered, so that the test shaft runs more smoothly, and the accuracy of the limit speed test data is improved. On the other hand, when the bearing end to be tested is jammed, the connecting line will break under pressure first. This flexible connection method can avoid the forced transmission of the motor driving torque, and prevent the workpiece from being damaged by instantaneous impact load, such as raceway damage, ball fragmentation and other irreversible failures.

[0006] The present application can be further provided with: a plurality of spacing blocks are arranged at the test station for abutting against the axial two sides of the bearing to be tested.

[0007] Further, a plurality of spacing blocks are arranged at the test station to abut against both sides of the bearing to be tested in the axial direction, so that the installation and positioning of the bearing to be tested are optimized, the axial movement of the bearing during high-speed operation is limited by abutting against the spacing blocks, the protrusion of the bearing can be adjusted by the spacing blocks, and the bearing to be tested is protected.

[0008] Further, the spacing block comprises an outer ring part and an inner ring part, the outer ring part and the inner ring part are respectively sleeved with the ring block and the test shaft sleeve, and the outer ring part and the inner ring part are separately arranged and spaced.

[0009] Further, the spacing block comprises an outer ring part and an inner ring part, the outer ring part and the inner ring part are respectively sleeved with the ring block and the test shaft sleeve, and the outer ring part and the inner ring part are separately arranged and spaced.

[0010] Further, the test shaft is provided with a boss and a limiting block at one end corresponding to both sides of the test station, the limiting block is detachably connected, and the boss and the limiting block can abut against the spacing blocks on both sides of the test station.

[0011] Further, the test shaft is provided with a boss and a limiting block at one end corresponding to both sides of the test station, the limiting block is detachably connected, and the boss and the limiting block can abut against the spacing blocks on both sides of the test station.

[0012] Further, the test shaft is provided with a boss and a limiting block at one end corresponding to both sides of the test station, the limiting block is detachably connected, and the boss and the limiting block can abut against the spacing blocks on both sides of the test station.

[0013] Further, the test shaft is provided with a boss and a limiting block at one end corresponding to both sides of the test station, the limiting block is detachably connected, and the boss and the limiting block can abut against the spacing blocks on both sides of the test station.

[0014] The application can be further provided with: the base comprises a mounting groove, and the ring block is detachably connected in the mounting groove.

[0015] Through the further provision, the seat realizes the detachable connection of the ring block through the mounting groove, when different specifications and different types of micro-precision angular contact ball bearings need to be tested, the old ring block can be quickly disassembled and replaced with a new ring block of an appropriate specification according to the testing requirements, and the equipment adaptation flexibility is greatly improved.

[0016] The application can be further provided with: the ring block is provided with a detection groove, and the detection groove is provided for inserting a temperature sensor.

[0017] Through the further provision, the ring block is provided with the detection groove for inserting the temperature sensor, the temperature is a core performance index in the high-speed running process of the bearing, and abnormal temperature rise often directly reflects problems such as bearing lubrication failure, intensified raceway wear or excessive assembly stress, by inserting the temperature sensor through the detection groove, the temperature change data of the bearing to be tested can be collected in real time, and in combination with the limit speed test result, a complete test data chain between the speed and the temperature can be formed, and the stable performance of the bearing in actual application is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of an embodiment of the application;

[0019] Figure 2 is a top view of an embodiment of the application;

[0020] Figure 3 is an embodiment of the application Figure 2 is a sectional view at A-A in the embodiment of the application;

[0021] Figure 4 is an embodiment of the application Figure 3 is an enlarged view of part a in the embodiment of the application;

[0022] Figure 5 is a schematic view of the cooperation structure of a test shaft and a limiting block in the embodiment of the application;

[0023] Figure 6 is a schematic view of the structure of a retaining ring in the embodiment of the application;

[0024] Wherein: the base 1; the ring block 11; the abutting portion 111; the detection groove 112; the test shaft 12; the first connecting portion 121; the first connecting hole 1211; the boss 122; the test station 13; the mounting groove 14; the motor 2; the second connecting portion 21; the second connecting hole 211; the spacer block 3; the outer ring portion 31; the inner ring portion 32; the limiting block 4; the retaining ring 5. DETAILED DESCRIPTION

[0025] An embodiment of the present invention, a miniature precision angular contact ball bearing limiting speed testing machine, is shown below. Figures 1-6 As shown: It includes a base 1 and a motor 2. The base 1 is provided with a ring block 11 and a test shaft 12. One end of the test shaft 12 passes through the ring block to form a test station 13 for mounting the bearing to be tested. The test shaft 12 is provided with a first connecting part 121. The motor 2 includes a second connecting part 21 located on its output shaft. The first connecting part 121 and the second connecting part 21 are respectively provided with a plurality of first connecting holes 1211 and a plurality of second connecting holes 211. The first connecting holes 1211 and the second connecting holes 211 can be flexibly connected between the first connecting part 121 and the second connecting part 21 through a connecting line.

[0026] The test station 13 is equipped with several spacer blocks 3 for supporting the axial sides of the bearing to be tested.

[0027] The spacer block 3 includes an outer ring portion 31 and an inner ring portion 32. The outer ring portion 31 and the inner ring portion 32 are respectively fitted into the ring block 11 and the test shaft 12, and the outer ring portion 31 and the inner ring portion 32 are separate and spaced apart.

[0028] The test shaft 12 is provided with a boss 122 and a limiting block 4 on both sides of the test station 13. The limiting block 4 is detachably connected and can form an abutment with the outer ring 31 of the spacer block 3 on both sides of the test station 13.

[0029] The ring block 11 is provided with an abutment part 111 and a detachable retaining ring 5 at both ends. The retaining ring 5 and the abutment part 111 can respectively form an abutment fit with the inner ring part 32 of the spacer block 3 on both sides of the test station 13. The retaining ring 5 and the limiting block 4 are in clearance fit.

[0030] The base 1 includes a mounting groove 14, and the ring block 11 is detachably connected to the mounting groove 14.

[0031] The ring block 11 is provided with a detection groove 112, which is used for inserting a temperature sensor.

[0032] The above examples are merely one preferred embodiment of the present invention. Ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included within the protection scope of the present invention.

Claims

1. A miniature precision angular contact ball bearing limiting speed testing machine, comprising a base and a motor, characterized in that: The base is provided with a ring block and a test shaft. One end of the test shaft passes through the ring block to form a test station for mounting the bearing to be tested. The test shaft is provided with a first connecting part. The motor includes a second connecting part located on its output shaft. The first connecting part and the second connecting part are respectively provided with a plurality of first connecting holes and a plurality of second connecting holes. The first connecting holes and the second connecting holes can be flexibly connected between the first connecting part and the second connecting part through a connecting line. The test station is provided with a plurality of spacers for abutting the axial sides of the bearing to be tested. The spacers include an outer ring part and an inner ring part. The outer ring part and the inner ring part are respectively fitted with the ring block and the test shaft, and the outer ring part and the inner ring part are separate and spaced apart. One end of the test shaft is provided with a boss and a limiting block on both sides of the test station. The limiting blocks are detachably connected, and the boss and the limiting block can abut against the spacers on both sides of the test station.

2. The miniature precision angular contact ball bearing limiting speed testing machine according to claim 1, characterized in that: The ring block is provided with an abutment part and a detachable retaining ring at both ends. The retaining ring and the abutment part can respectively form an abutment fit with the spacer blocks on both sides of the test station, and the retaining ring and the limiting block are in clearance fit.

3. The miniature precision angular contact ball bearing limiting speed testing machine according to claim 1 or 2, characterized in that: The base includes a mounting groove, and the ring block is detachably connected to the mounting groove.

4. The miniature precision angular contact ball bearing limiting speed testing machine according to claim 1 or 2, characterized in that: The ring block is provided with a detection slot, which is used for inserting a temperature sensor.

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