Auxiliary tool for measuring assembly height of conical bearing

Abstract

The utility model relates to an auxiliary tool for measuring the assembly height of a conical bearing. Belongs to the technical field of conical bearing measurement. The utility model mainly solves the problems that the assembly height is inconvenient to measure, the measurement result is not direct and the calculation error exists when the clearance of the hub bearing is assembled at present. The device is mainly characterized by comprising a cover plate, a height block and a base plate, the upper end face and the lower end face of the cover plate are parallel. The height block is a cuboid, the upper and lower end faces are parallel, and the height is the assembly height nominal size of the measured bearing; the upper and lower parts of the base plate are of two-step circular structures, and the upper and lower step circular planes are parallel. The measuring tool has the advantages of being simple in structure, small in tool size, convenient to use and capable of improving the measurement accuracy of the assembly height and the detection efficiency, avoids later result recalculation, reduces calculation steps, does not have calculation errors, and is mainly used for measuring the assembly height of the conical bearing.

Description

Technical Field

[0001] The utility model belongs to the technical field of tapered bearing measurement, and specifically relates to an auxiliary tool for measuring the assembly height of a tapered bearing. The utility model is used for measuring the assembly height of a tapered bearing, thereby improving the measurement accuracy of the assembly height and increasing the detection efficiency. Background Art

[0002] Xiangzhou Company's products are constantly diversifying, specializing, and developing professionally. Double-row unit products are also the company's key development targets, and their structural types have also changed. For example, the BTH-0087E product has a special product structure. It is a double-row bearing unit composed of two sets of single-row tapered bearings. When matching the clearance of the product, it is necessary to measure the assembly height data of the single-row bearings. Then, the minimum assembly height is calculated based on the assembly height and the inner ring height, thereby obtaining the clearance of the entire product. In the past, in the measurement of assembly height, because the width of the inner and outer rings of the bearings is the same, it is necessary to find a spacer to support the product from the bottom of the inner ring so that the inner and outer ring raceways are in full contact with the rolling element tapered surface. Then, the overall height of the product and the spacer is measured. Finally, the height of the spacer is subtracted to obtain the assembly height of the product. This adds an additional process of measuring the spacer height, which is not convenient for calculating the final size. Utility Model Content

[0003] The purpose of the utility model is to design a high-assisted tool for measuring tapered bearing assembly with a simple structure and convenient operation in response to the above-mentioned shortcomings.

[0004] The technical solution of the utility model is: an auxiliary tool for measuring the assembly height of a tapered bearing, which is characterized by comprising a cover plate, a height block and a pad; the cover plate is disc-shaped, and the upper and lower end surfaces are parallel; the height block is a rectangular parallelepiped, and the upper and lower end surfaces are parallel, and the height is the nominal size of the assembly height of the measured bearing; the upper and lower parts of the pad are two stepped circular structures, and the upper and lower stepped circular planes are parallel.

[0005] In the technical solution of the present invention, the bottom surface of the cover plate is provided with a cylindrical inner hole.

[0006] The outer diameter of the cover plate in the technical solution of the present invention is consistent with the outer diameter of the outer ring of the bearing to be measured.

[0007] The material of the cover plate in the technical solution of the present invention is GCr15, which needs to be quenched to a hardness of HRC55-62, and the upper and lower ends are ground surfaces, with a parallelism error and flatness of no more than 0.002mm.

[0008] In the technical solution of the present invention, the top surface of the cover plate is provided with a circular ring groove.

[0009] The pad in the technical solution of the present invention is a two-step circular ring; the outer diameter of the large ring of the pad is consistent with the outer diameter of the outer ring of the measured bearing, and the outer diameter of the small ring is consistent with the outer diameter of the large rib of the inner ring of the measured bearing.

[0010] In the technical solution of the present invention, the inner diameter of the large ring of the pad is 10 cm smaller than the outer diameter of the large ring, and the inner diameter of the small ring is consistent with the inner diameter of the bearing.

[0011] The material of the pad in the technical solution of the present invention is GCr15, which needs to be quenched to a hardness of HRC55-62, and the upper and lower ends are ground surfaces, with a parallelism error and flatness of no more than 0.002mm.

[0012] The material of the height block in the technical solution of the present invention is GCr15, which needs to be quenched to a hardness of HRC55-62, and the upper and lower ends are ground surfaces, with a parallelism error and flatness of no more than 0.002mm.

[0013] The technical solution of the present invention also includes an instrument, which is a bearing height measuring instrument.

[0014] The utility model uses a cover plate, a height block, and a backing plate to form an auxiliary tool for measuring the assembly height of a tapered bearing. The cover plate is disc-shaped with parallel upper and lower end faces, the height block is a rectangular parallelepiped with parallel upper and lower end faces, and the height is the nominal size of the assembly height of the bearing to be measured. The top and bottom of the backing plate are two stepped circular structures, and the upper and lower stepped circular planes are parallel. Therefore, when measuring the assembly height of a tapered bearing, the height block, the cover plate, and the backing plate can be placed on the instrument table from top to bottom, with the large circular end of the backing plate facing upward. The probe is placed at the center of the cover plate, and the height block is used for calibration. The height block is then removed, and the large circular end of the backing plate is placed downward. The bearing to be measured is placed between the cover plate and the backing plate, and the probe is placed at the center of the cover plate. The needle reading at this time is the bearing assembly height deviation. The utility model does not need to measure the actual height value of the backing plate.

[0015] The utility model has the characteristics of simple structure, easy processing, improved measurement accuracy of assembly height and improved measurement efficiency, and is mainly used for auxiliary measurement of assembly height of tapered bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional schematic diagram of the cover plate of the present invention.

[0017] Figure 2 This is a schematic diagram of the height block of the utility model.

[0018] Figure 3 It is a cross-sectional schematic diagram of the pad of the utility model.

[0019] Figure 4This is the purpose of this utility model.

[0020] Figure 5 This is a schematic diagram of the use of the present utility model.

[0021] Reference numerals: 1-probe; 2-cover plate; 3-height block; 4-outer ring; 5-inner ring; 6-backing plate; 7-instrument. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] like Figure 1 、 Figure 2 、 Figure 3 As shown, an embodiment of an auxiliary tool for measuring the assembly height of a tapered bearing of the present invention is composed of a cover plate 2, a height block 3 and a pad 6.

[0024] The main body of cover plate 2 is disc-shaped, with a cylindrical inner hole on the bottom and an annular groove on the top. The upper and lower end surfaces are parallel. The disc is 15 cm thick, with a wall thickness of 5 cm and an inner hole depth of 10 cm. Its outer diameter matches that of the outer ring 4 of the bearing being tested. The upper and lower ends are ground to ensure a parallelism error of no more than 0.002 mm. The material is GCr15, hardened to a hardness of HRC 55-62. The annular groove on the top surface facilitates alignment of probe 1 with the center of cover plate 2.

[0025] The main body of the height block 3 is a rectangular parallelepiped with parallel upper and lower end faces, a thickness of 10 cm, and a length consistent with the nominal size of the measured bearing assembly height, with an error within the range of ±0.001 mm. The upper and lower ends need to be ground to ensure that the parallelism error and flatness are no more than 0.002 mm. The material is GCr15 and needs to be quenched to a hardness of HRC55-62.

[0026] The main body of the backing plate 6 is a two-step circular ring, consisting of two upper and lower circular raised structures, with the upper and lower stepped circular surfaces parallel to each other. The outer diameter of the large ring of the backing plate 6 is consistent with the outer diameter of the outer ring 4 of the bearing being tested, and the outer diameter of the small ring is consistent with the outer diameter of the large rib of the inner ring 5 of the bearing being tested. The inner diameter of the large ring is 10 cm smaller than the outer diameter of the large ring, and the inner diameter of the small ring is consistent with the inner diameter of the bearing being tested. The thickness of the large and small ring raised structures is approximately 5 cm, and the thickness of the middle structure is approximately 10 cm. The overall thickness of the tooling is approximately 20 cm. The upper and lower ring surfaces need to be ground to ensure that their parallelism and flatness are no more than 0.002 mm. The material is GCr15 and requires quenching to a hardness of HRC55-62.

[0027] The instrument 7 is a bearing height measuring instrument, which is conventional technology and includes a probe 1 .

[0028] Directions:

[0029] First, place the small end of the pad 6 downward on the table of the instrument 7 so that it fits fully, place the cover plate 2 on the large end of the pad 6 so that it fits fully, then place the height block 3 on the cover plate 2 so that it fits fully, and then hit the probe 1 on the height block 3 to complete the alignment. At this time, the pointer reading of the instrument 7 is the nominal size value of the measured bearing assembly height. After the alignment is completed, take out the cover plate 2, height block 3 and pad 6, and then place the large end of the pad 6 downward on the table of the instrument 7 so that it fits fully (Note: the pad 6 is placed upside down, and the overall height of the pad 6 will not change). Place one row of the bearing unit to be measured (a double-row tapered bearing unit with model BTH-0087E) on the pad 6. 7. Place the cover plate 2 on the large end of the bearing outer ring 4 so that the large end face of the bearing inner ring 5 is fully fitted with it (Note: because the width of the outer ring 4 and the inner ring 5 of the measured bearing are the same, the measured bearing needs to be supported during measurement so that the small end face of the outer ring 4 of the measured bearing will not contact the table of the instrument 7 to ensure the accuracy of the measurement result). Then place the cover plate 2 on the large end of the bearing outer ring 4 so that it is fully fitted. Then hit the probe 1 at the center of the cover plate 2, press the cover plate 2 with both hands and rotate it slowly to make all parts of the bearing fully contact. The pointer reading at this time is the deviation of the bearing assembly height relative to the nominal size. Measure the deviation of the bearing assembly height of another row in the same way. The clearance of the entire bearing unit can be obtained by measuring the deviation of the bearing assembly height twice.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A high-assistance tool for measuring tapered bearing assembly, characterized by: The invention comprises a cover plate (2), a height block (3) and a pad (6); the cover plate (2) is in the shape of a disk, with upper and lower end faces being parallel; the height block (3) is in the shape of a cuboid, with upper and lower end faces being parallel, and the height is the nominal size of the measured bearing assembly height; the pad (6) has two stepped circular structures on the upper and lower sides, and the upper and lower stepped circular planes are parallel.

2. The high-assisted tool for measuring tapered bearing assembly according to claim 1 is characterized by: The bottom surface of the cover plate (2) is provided with a cylindrical inner hole.

3. The high-assisted tool for measuring tapered bearing assembly according to claim 2 is characterized by: The outer diameter of the cover plate (2) is consistent with the outer diameter of the outer ring of the bearing to be measured.

4. The high-assisted tool for measuring tapered bearing assembly according to claim 3 is characterized by: The material of the cover plate (2) is GCr15, which needs to be quenched to a hardness of HRC55-62, and the upper and lower ends are ground surfaces, with a parallelism difference and flatness of no more than 0.002 mm.

5. The high-assisted tool for measuring tapered bearing assembly according to claim 4 is characterized by: The top surface of the cover plate (2) is provided with a circular groove.

6. A high-assistance tool for measuring tapered bearing assembly according to any one of claims 1 to 5, characterized in that: The pad (6) is a two-step circular ring; the outer diameter of the large ring of the pad (6) is consistent with the outer diameter of the outer ring (4) of the bearing to be measured, and the outer diameter of the small ring is consistent with the outer diameter of the large rib of the inner ring (5) of the bearing to be measured.

7. The high-assisted tool for measuring tapered bearing assembly according to claim 6, characterized in that: The inner diameter of the large ring of the pad (6) is 10 cm smaller than the outer diameter of the large ring, and the inner diameter of the small ring is consistent with the inner diameter of the bearing.

8. The high-assistance tool for measuring tapered bearing assembly according to claim 7, characterized in that: The material of the pad (6) is GCr15, which needs to be quenched to a hardness of HRC55-62, and the upper and lower ends are ground surfaces, with a parallelism difference and flatness of no more than 0.002 mm.

9. A high-assistance tool for measuring tapered bearing assembly according to any one of claims 1-5, 7-8, characterized in that: The material of the height block (3) is GCr15, which needs to be quenched to a hardness of HRC55-62, and the upper and lower ends are ground surfaces, with a parallelism difference and flatness of no more than 0.002 mm.

10. A high-assistance tool for measuring tapered bearing assembly according to any one of claims 1-5, 7-8, characterized in that: It also includes an instrument (7), which is a bearing height measuring instrument.

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