Cylindrical roller crushing load test tool

Abstract

The utility model provides a cylindrical roller crushing load test tool which comprises an upper pressing block and a lower pressing block, the upper pressing block is located above the lower pressing block, V-shaped grooves are formed in the opposite faces of the upper pressing block and the lower pressing block, a cylindrical roller can be arranged in the V-shaped grooves, and the cylindrical roller is ballasted when the lower pressing block applies force upwards. The cylindrical roller crushing load test tool is reasonable in design structure, can meet the crushing load test work of cylindrical rollers with different sizes, solves the blank that no suitable tool is provided for the cylindrical roller crushing load test in the prior art, meets the requirements of customers for the cylindrical roller crushing load test, and has the advantages of being simple in structure and easy and convenient to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylindrical roller detection, and particularly relates to a test tool for the crushing load test of cylindrical rollers. Background Art

[0002] Cylindrical rollers are one of the main components of cylindrical roller bearings. During the operation of the bearings, they need to bear a certain axial load and radial load. The rollers and the raceways of the rings are in line contact, which makes them the parts most prone to stress concentration. They are easily crushed during the working process, resulting in the early failure of the bearings. Therefore, the crushing load value of cylindrical rollers has a crucial impact on the service life of the bearings. Since some customers have put forward requirements for the crushing load value of single cylindrical rollers, but there is no dedicated detection method and test tool for the crushing load test of cylindrical rollers. Therefore, based on the above reasons, the inventor provides a test tool for the crushing load test of cylindrical rollers to solve the problem that there is no suitable tool in the prior art to conduct the crushing load test on cylindrical rollers. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a test tool for the crushing load test of cylindrical rollers. Its design structure is reasonable, which can meet the crushing load test work of cylindrical rollers with different sizes, solve the blank that there is no suitable tool for the crushing load test of cylindrical rollers in the prior art, meet the needs of customers for the crushing load test of cylindrical rollers, and has the advantages of simple structure and convenient operation.

[0004] The technical solution adopted by the utility model is: a test tool for the crushing load test of cylindrical rollers, including an upper pressing block and a lower pressing block. The upper pressing block is located above the lower pressing block. V-shaped grooves are opened on the opposite surfaces of the upper pressing block and the lower pressing block. The cylindrical roller can be placed in the V-shaped groove, and the cylindrical roller is pressed when the lower pressing block applies an upward force.

[0005] The V-shaped groove includes a first V-shaped groove opened on the lower surface of the upper pressing block and a second V-shaped groove opened on the upper surface of the lower pressing block. The V-shaped angles of the first V-shaped groove and the second V-shaped groove are both 90°.

[0006] An installation hole for connecting the screw press rod of the pressure testing machine is opened on the upper surface of the upper pressing block.

[0007] A process hole is opened on the side surface of the upper pressing block to facilitate driving the upper pressing block to rotate.

[0008] A first positioning pin hole is opened on the lower surface of the upper pressing block, and a second positioning pin hole is opened on the upper surface of the lower pressing block. When the center lines of the first positioning pin hole and the second positioning pin hole coincide with each other, the length directions of the first V-shaped groove and the second V-shaped groove are parallel to each other, and in the cross section, the midlines of the first V-shaped groove and the second V-shaped groove coincide with each other.

[0009] A positioning pin hole three is formed at the lower surface position of the lower pressing block.

[0010] The beneficial effects of the present utility model are as follows:

[0011] The present utility model has a reasonable design structure, can meet the crushing load test work of cylindrical rollers with different sizes, solve the blank of the lack of a suitable tooling for the crushing load test of cylindrical rollers in the prior art, meet the needs of customers for the crushing load test of cylindrical rollers, and has the advantages of simple structure and convenient operation. Description of the Drawings

[0012] Figure 1 It is a structural diagram of the upper pressing block of the present utility model;

[0013] Figure 2 It is a structural diagram of the lower pressing block of the present utility model;

[0014] Figure 3 It is a working principle diagram of the present utility model.

[0015] Markings in the figure: 1, upper pressing block; 2, process hole; 3, positioning pin hole one; 4, first V-shaped groove; 5, mounting hole; 6, lower pressing block; 7, positioning pin hole two; 8, second V-shaped groove; 9, positioning pin hole three. Specific Embodiments

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0017] As shown in the figure, a tooling for the crushing load test of cylindrical rollers includes an upper pressing block 1 and a lower pressing block 6. The upper pressing block 1 is located above the lower pressing block 6. V-shaped grooves are formed on the opposite surfaces of the upper pressing block 1 and the lower pressing block 6. The cylindrical roller can be placed in the V-shaped groove, and the cylindrical roller is subjected to a pressing load when the lower pressing block 6 applies an upward force.

[0018] The V-shaped groove includes a first V-shaped groove 4 formed at the lower surface position of the upper pressing block 1 and a second V-shaped groove 8 formed at the upper surface position of the lower pressing block 6. The V-shaped angles of the first V-shaped groove 4 and the second V-shaped groove 8 are both 90°. Among them, both the first V-shaped groove 4 and the second V-shaped groove 8 are through grooves. After processing and forming, heat treatment is required for the position of the V-shaped groove to make the surface hardness of the upper and lower V-shaped grooves be HRC60 - 63, which can meet the requirements of the crushing load test of cylindrical rollers with different hardnesses and different lengths.

[0019] The upper surface of the upper pressing block 1 is provided with a mounting hole 5 for connecting the lead screw press rod of the pressure testing machine. The mounting hole 5 is a threaded hole for connecting the upper pressing block 1 to the press rod of the press, so as to install the upper pressing block 1. In this example, the threaded hole is an M20 thread. When the upper pressing block 1 is installed at the end of the press rod of the press, the upper pressing block 1 and the press rod can be locked by a nut.

[0020] A process hole 2 is provided at the side position of the upper pressing block 1 to facilitate the rotation of the upper pressing block 1. In this example, process holes 2 are provided on the outer walls of the four sides of the upper pressing block 1, mainly for inserting a rod-shaped tool (such as an internal hexagonal wrench) into the process hole 2 to facilitate the rotation of the upper pressing block 1, so as to facilitate the alignment of the first V-shaped groove 4 of the upper pressing block 1 and the second V-shaped groove 8 of the lower pressing block 6, achieving the effect of facilitating the rotation of the upper pressing block 1.

[0021] A first positioning pin hole 3 is provided on the lower surface of the upper pressing block 1, and a second positioning pin hole 7 is provided on the upper surface of the lower pressing block 6. When the center lines of the first positioning pin hole 3 and the second positioning pin hole 7 coincide with each other, the length directions of the first V-shaped groove 4 and the second V-shaped groove 8 are parallel to each other, and in the cross section, the center lines of the first V-shaped groove 4 and the second V-shaped groove 8 coincide with each other. Such a setting is to install a positioning pin at the second positioning pin hole 7, and then rotate the upper pressing block 1 to a certain angle, and the lower pressing block 6 moves upward so that the positioning pin can be inserted into the first positioning pin hole 3 of the upper pressing block 1. At this time, it is proved that the tooling is corrected in place, and the directions and angles of the first V-shaped groove 4 and the second V-shaped groove 8 are the same. After locking the upper pressing block 1, the cylindrical roller can be placed in the second V-shaped groove 8 for the crushing load test.

[0022] A third positioning pin hole 9 is provided at the lower surface position of the lower pressing block 6, which is mainly used to position the lower pressing block 6. In this example, the lower pressing block 6 is installed on the bottom platform of the pressure testing machine by bolts.

[0023] When this cylindrical roller crushing load test tooling is in use, the lower pressing block 6 is installed on the platform of the pressure testing machine, and the upper pressing block 1 is installed at the lifting and pressing rod of the pressure testing machine. The cylindrical roller can be placed in the second V-shaped groove 8. By driving the lower pressing block 6 to rise with the platform, the cylindrical roller can be loaded. It can be set according to the requirements of the cylindrical crushing load value. After reaching the set load value, if the roller does not break, it proves that the crushing load meets the product requirements. During the debugging stage of this tooling, first fix the lower pressing block 6, and thread-connect the upper pressing block 1 to the end of the pressing rod. At this time, the upper pressing block 1 can rotate relative to the lower pressing block 6. In order to make the first V-shaped groove 4 of the upper pressing block 1 correspond to the second V-shaped groove 8 of the lower pressing block 6, use tools such as a wrench to insert into the process hole 2 to rotate the upper pressing block 1, and observe the relative positions of the first V-shaped groove 4 and the second V-shaped groove 8 during the rotation. When the upper pressing block 1 rotates to a certain position, move the lower pressing block 6 upward. The positioning pin originally inserted into the positioning pin hole two 7 can be inserted into the positioning pin hole one 3 at the same time. In this state, lock the position of the upper pressing block 1 to complete the entire debugging work.

[0024] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cylindrical roller crushing load test tooling, characterized in that: It includes an upper pressing block and a lower pressing block. The upper pressing block is located above the lower pressing block. V-shaped grooves are provided on the opposite surfaces of the upper pressing block and the lower pressing block. The cylindrical rollers can be placed in the V-shaped grooves, and the cylindrical rollers are loaded when the lower pressing block applies an upward force.

2. The cylindrical roller crushing load test tooling according to claim 1, wherein: The V-shaped groove includes a first V-shaped groove provided on the lower surface of the upper pressing block and a second V-shaped groove provided on the upper surface of the lower pressing block. The V-shaped angles of the first V-shaped groove and the second V-shaped groove are both 90°.

3. The cylindrical roller crushing load test tooling according to claim 1, characterized in that: The upper surface of the upper pressing block is provided with a mounting hole for connecting the lead screw press rod of the pressure testing machine.

4. A cylindrical roller crushing load test tooling according to claim 3, characterized in that: A process hole is provided at the side position of the upper pressing block to facilitate driving the upper pressing block to rotate.

5. A cylindrical roller crushing load test tooling according to claim 2, characterized in that: A first positioning pin hole is provided on the lower surface of the upper pressing block, and a second positioning pin hole is provided on the upper surface of the lower pressing block. When the center lines of the first positioning pin hole and the second positioning pin hole coincide with each other, the length directions of the first V-shaped groove and the second V-shaped groove are parallel to each other, and in the cross section, the midlines of the first V-shaped groove and the second V-shaped groove coincide with each other.

6. The cylindrical roller crushing load test tooling according to claim 1, characterized in that: A third positioning pin hole is provided at the lower surface position of the lower pressing block.

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