An inner and outer diameter measuring device for precision bearings

Abstract

The utility model discloses a kind of inner and outer diameter measuring device for precision bearing, it is related to bearing measurement technical field, including clamping assembly and measuring assembly, clamping assembly includes bearing base, the fixture of bearing base upper movable setting, measuring assembly includes the translation block of bearing base upper movable in horizontal direction, infrared range finder located in translation block one side and with bearing base fixed, and the measuring needle of movable setting in translation block bottom end.The utility model is self-centering clamped to bearing by clamping mechanism, make bearing center and the center position of measuring needle keep on same horizontal straight line, then through translation block drive measuring needle moves respectively and sticks to the outer wall and two sides inner wall of bearing, through infrared range finder measuring the distance difference of translation block corresponding position, bearing inner and outer diameter can be obtained using conversion formula, measurement operation difficulty is low, efficiency is high, to facilitate the bearing inner and outer diameter measurement work to carry out more.

Description

Technical Field

[0001] This utility model relates to the field of bearing measurement technology, and in particular to a device for measuring the inner and outer diameters of precision bearings. Background Technology

[0002] During the machining of precision bearings, it is necessary to measure their inner and outer diameters to determine whether the machining dimensions of the inner and outer rings of the precision bearing meet the preset requirements, so as to ensure that the dimensional machining of the bearing can achieve high precision requirements.

[0003] In existing technologies, the inner and outer diameters of bearings are mainly measured using high-precision measuring tools such as vernier calipers or micrometers. Although this can achieve high-precision measurement of the inner and outer diameters of bearings, the process is complex and requires high user skills, which affects the efficiency of measuring the inner and outer diameters of bearings and makes it difficult to meet the current demand for convenient and efficient use. Therefore, in order to meet the measurement needs of the inner and outer diameters of bearings, a device for measuring the inner and outer diameters of precision bearings is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a device for measuring the inner and outer diameters of precision bearings, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for measuring the inner and outer diameters of precision bearings, comprising:

[0006] The clamping assembly includes a support base and a clamp movably mounted on the support base;

[0007] The measuring assembly includes a translation block that can move horizontally above a support base, an infrared rangefinder located on one side of the translation block and fixed to the support base, and a measuring needle movably disposed at the bottom of the translation block.

[0008] Preferably, the clamp includes:

[0009] Two clamping blocks are movably mounted on the top of the support base, and V-shaped clamping grooves are provided on opposite sides of the two clamping blocks;

[0010] The displacement driving component has a straight through groove at the top of the support base and is disposed on the inner wall of the support base. The displacement driving component is used to drive two clamping blocks to move synchronously towards or in opposite directions.

[0011] Preferably, the displacement driving assembly includes two driving blocks that are slidably connected in a straight through groove. The top end of the driving block is fixedly connected to the bottom end of the clamping block at the corresponding position. The bottom of the driving block extends into the bearing base and is threaded with a bidirectional screw.

[0012] Preferably, the measuring component further includes:

[0013] Two side plates are symmetrically and fixedly connected to the top two sides of the support base, and the infrared rangefinder is fixedly connected to the top of the inner wall of one of the side plates;

[0014] Two linear slide rods are fixedly connected between two side plates from top to bottom in parallel intervals, and the top of the translation block is slidably inserted into the outer wall of the linear slide rod.

[0015] Preferably, a measuring screen is fixedly embedded on the top of the translation block facing the infrared rangefinder, and the side of the measuring screen facing the infrared rangefinder is tangent to the outer wall of the measuring needle.

[0016] Preferably, the bottom of the translation block is provided with a telescopic groove, the measuring needle is movably inserted into the telescopic groove, and a return spring is fixedly connected between the top of the measuring needle and the inner wall of the top of the telescopic groove.

[0017] Preferably, both ends of the bidirectional screw are rotatably connected to the inner walls of both sides of the bearing base, and one end of the bidirectional screw penetrates the outer wall of the bearing base and is fixedly connected to a rotary drive component.

[0018] Preferably, one side of the telescopic groove is connected to the side wall of the translation block, and a lifting rod is fixedly connected to the top of the side wall of the measuring needle. The lifting rod extends along the side wall of the telescopic groove to the outside of the translation block.

[0019] Compared with the prior art, the technical effects of this utility model are as follows:

[0020] This invention uses a clamping mechanism to self-center the bearing, keeping the bearing center and the measuring needle center on the same horizontal line. Then, a translation block drives the measuring needle to move and fit against the outer and inner walls of the bearing on both sides respectively. By measuring the distance difference between the corresponding positions of the translation block using an infrared rangefinder, the inner and outer diameters of the bearing can be obtained using a conversion formula. The measurement operation is simple and efficient, making it easier to measure the inner and outer diameters of bearings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the clamping block of this utility model.

[0023] Figure 3 This is a partial cross-sectional view of the front of the translation block of this utility model.

[0024] In the diagram: 100, bearing base; 101, clamping block; 102, V-shaped clamping groove; 103, driving block; 104, bidirectional screw; 105, straight through groove; 106, rotary driving component; 107, side plate; 108, linear slide bar; 109, translation block; 110, measuring screen; 111, measuring needle; 112, infrared rangefinder; 113, telescopic groove; 114, return spring; 115, lifting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides, for example Figures 1-3 The device shown is for measuring the inner and outer diameters of precision bearings. It includes a clamping assembly and a measuring assembly. The clamping assembly includes a support base 100 and a clamp movably mounted on the support base 100. The measuring assembly includes a horizontally movable translation block 109 above the support base 100, an infrared rangefinder 112 located on one side of the translation block 109 and fixed to the support base 100, and a measuring needle 111 movably mounted at the bottom of the translation block 109. When measuring the bearing, the clamping assembly self-centers bearings of various specifications, aligning the bearing center with the measuring needle 111. The center of the bearing is kept horizontal and straight. Then, the measuring needle 111 is moved by the translation block 109 to make contact with four positions on the outer and inner walls of the bearing. The distance of the translation block 109 at these four positions is measured by the infrared rangefinder 112. By combining the measured distance data with the calculation formula, the length of the outer and inner diameters of the bearing can be directly obtained. The measurement operation only requires moving the translation block 109 to make the measuring needle 111 contact with the outer and inner walls of the bearing. The operation is simple, reduces the skill requirements of the measurement personnel, and makes the measurement of the inner and outer diameters of the bearing more efficient.

[0027] The fixture includes two clamping blocks 101 and a displacement driving assembly. The two clamping blocks 101 are movably mounted on the top of the support base 100. Each clamping block 101 has a V-shaped clamping groove 102 on its opposite side. The top of the support base 100 has a straight through groove 105. The displacement driving assembly is located on the inner wall of the support base 100 and is used to drive the two clamping blocks 101 to move synchronously in opposite directions. The V-shaped clamping groove 102 on the opposite side of the two clamping blocks 101 can not only accommodate the clamping of bearings of various sizes, but also achieve self-centering clamping of bearings of various sizes, thereby achieving the positioning and fixing of the bearing position.

[0028] Furthermore, the displacement drive assembly includes two drive blocks 103 slidably connected within a straight through groove 105. The top end of each drive block 103 is fixedly connected to the bottom end of a corresponding clamping block 101. The bottom of each drive block 103 extends into the interior of the support base 100 and is threadedly connected to a bidirectional screw 104. Both ends of the bidirectional screw 104 are rotatably connected to the inner walls of both sides of the support base 100. One end of the bidirectional screw 104 penetrates the outer wall of the support base 100 and is fixedly connected to a rotary drive component 106. The rotary drive component 106... 06 drives the bidirectional screw 104 to rotate clockwise or counterclockwise. In conjunction with the guiding effect of the straight through groove 105 on the drive block 103, the bidirectional screw 104 drives the drive block 103 to move axially along the straight through groove 105 when it rotates. With the threads on both sides of the outer wall of the bidirectional screw 104 being set in opposite directions, the two clamping blocks 101 can move synchronously towards or in opposite directions. In addition, with the V-shaped clamping groove 102 on the clamping block 101 clamping the bearing at two points, the bearing can be stably clamped and accurately positioned.

[0029] The measuring assembly also includes two side plates 107 and two linear slide rods 108. The two side plates 107 are symmetrically fixed to the top two sides of the support base 100. An infrared rangefinder 112 is fixedly connected to the top of the inner wall of one of the side plates 107. The two linear slide rods 108 are fixedly connected between the two side plates 107 in parallel from top to bottom. The top of the translation block 109 is slidably inserted into the outer wall of the linear slide rod 108. A measuring screen 110 is fixedly embedded on the top of the translation block 109 facing the infrared rangefinder 112. The side of the measuring screen 110 facing the infrared rangefinder 112 is tangent to the outer wall of the measuring needle 111. The side plates 107 and the linear slide rods 108 are symmetrically fixed to the top two sides of the support base 100. The rod 108 not only supports the translation block 109 but also guides its horizontal movement, ensuring smooth motion. Furthermore, a linear bearing can be installed on the translation block 109 to slide along the linear slide rod 108, further enhancing its stability and smoothness. The measuring screen 110 reflects the infrared rays emitted by the infrared rangefinder 112, allowing direct measurement of the horizontal distance between the measuring needle 111 and the infrared rangefinder 112, providing a more intuitive representation of the measured quantity.

[0030] Furthermore, a telescopic groove 113 is provided at the bottom of the translation block 109. The measuring needle 111 is movably inserted into the telescopic groove 113. A return spring 114 is fixedly connected between the top of the measuring needle 111 and the inner wall of the top of the telescopic groove 113. One side of the telescopic groove 113 is connected to the side wall of the translation block 109. A lifting rod 115 is fixedly connected to the top of the side wall of the measuring needle 111. The lifting rod 115 extends along the side wall of the telescopic groove 113 to the outside of the translation block 109. When it is necessary for the translation block 109 to move upward through the bearing, the user only needs to manually lift the lifting rod 115 to drive the measuring needle 111 to retract upward into the telescopic groove 113, eliminating the obstruction problem between the measuring needle 111 and the bearing. At the same time, the return spring 114 can make the measuring needle 111 automatically extend, improving the convenience of operation.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for measuring the inner and outer diameters of precision bearings, characterized in that, include: The clamping assembly includes a support base (100) and a clamp movably disposed on the support base (100); The measuring assembly includes a translation block (109) that can move horizontally above a support base (100), an infrared rangefinder (112) located on one side of the translation block (109) and fixed to the support base (100), and a measuring needle (111) movably disposed at the bottom of the translation block (109).

2. The device for measuring the inner and outer diameters of precision bearings according to claim 1, characterized in that, The clamp includes: Two clamping blocks (101) are movably disposed on the top of the support base (100), and V-shaped clamping grooves (102) are provided on opposite sides of the two clamping blocks (101). The displacement driving component has a straight through groove (105) at the top of the support base (100). The displacement driving component is disposed on the inner wall of the support base (100). The displacement driving component is used to drive two clamping blocks (101) to move synchronously towards each other or in opposite directions.

3. The device for measuring the inner and outer diameters of precision bearings according to claim 2, characterized in that, The displacement drive assembly includes two drive blocks (103) slidably connected in a straight through groove (105). The top of the drive block (103) is fixedly connected to the bottom of the clamping block (101) at the corresponding position. The bottom of the drive block (103) extends into the bearing base (100) and is threaded with a bidirectional screw (104).

4. The device for measuring the inner and outer diameters of precision bearings according to claim 1, characterized in that, The measurement component also includes: Two side plates (107) are symmetrically fixedly connected to the top two sides of the support base (100), and the infrared rangefinder (112) is fixedly connected to the top of the inner wall of one of the side plates (107). Two linear slide rods (108) are fixedly connected between two side plates (107) from top to bottom in parallel intervals. The top of the translation block (109) is slidably inserted into the outer wall of the linear slide rod (108).

5. The device for measuring the inner and outer diameters of precision bearings according to claim 4, characterized in that, The top of the translation block (109) facing the infrared rangefinder (112) is fixedly fitted with a measuring screen (110), and the side of the measuring screen (110) facing the infrared rangefinder (112) is tangent to the outer wall of the measuring needle (111).

6. The device for measuring the inner and outer diameters of precision bearings according to claim 1, characterized in that, The bottom of the translation block (109) is provided with a telescopic groove (113), the measuring needle (111) is movably inserted into the telescopic groove (113), and a return spring (114) is fixedly connected between the top of the measuring needle (111) and the inner wall of the top of the telescopic groove (113).

7. The device for measuring the inner and outer diameters of precision bearings according to claim 3, characterized in that, The two ends of the bidirectional screw (104) are rotatably connected to the inner walls of both sides of the bearing base (100), and one end of the bidirectional screw (104) passes through the outer wall of the bearing base (100) and is fixedly connected to a rotary drive component (106).

8. The device for measuring the inner and outer diameters of precision bearings according to claim 6, characterized in that, The telescopic groove (113) is connected to the side wall of the translation block (109) on one side. A lifting rod (115) is fixedly connected to the top of the side wall of the measuring needle (111). The lifting rod (115) extends along the side wall of the telescopic groove (113) to the outside of the translation block (109).

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