Device for testing inner diameter, outer diameter and height of roller

Abstract

The utility model discloses a roller internal and external diameter and height testing device, which comprises a testing seat provided with a cylindrical internal diameter measuring head arranged along the vertical direction and an annular external diameter measuring head which is arranged outside the internal diameter measuring head and is coaxial with the internal diameter measuring head, and the external diameter measuring head is provided with a through opening along the radial line direction, the outer surface of the inner diameter measuring head is uniformly provided with a plurality of first air holes. The inner surface of the outer diameter measuring head is uniformly provided with a plurality of second air holes. The top end of the plane seat is higher than the bottom surface of the opening of the outer diameter measuring head, and the plane seat is provided with an accommodating groove corresponding to the opening of the outer diameter measuring head; the height measuring head is provided with a first measuring part and a second measuring part, a third air hole is formed in the bottom surface of the first measuring part, a fourth air hole is formed in the top surface of the second measuring part, the third air hole is located above the top end of the roller placed on the plane seat, and the fourth air hole is located below the bottom end of the roller; according to the utility model, the problem of low detection efficiency of the inner diameter, the outer diameter and the height of the roller for the traditional air condition compressor can be solved.

Description

A roller inner and outer diameter and height testing device Technical Field

[0001] This utility model relates to the field of air conditioning compressors, specifically to a device for testing the inner and outer diameters and height of rollers used in air conditioning compressors. Background Technology

[0002] The compressor rollers are a crucial component of an air conditioning compressor, typically located inside the compressor cylinder. Their primary function is to work in conjunction with the piston rings to compress gas. During compressor operation, the rollers reciprocate within the cylinder, thereby achieving gas compression. Currently, before leaving the factory, the rollers require inspection of their outer diameter, inner diameter, and height. Traditional inspection methods involve separate measurements on inner diameter, outer diameter, and height measuring platforms, resulting in high inspection costs and low efficiency. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a roller inner and outer diameter and height testing device.

[0004] To achieve the above objectives, the technical solution adopted by this utility model includes: a test seat, which is provided with a columnar inner diameter probe arranged in a vertical direction and an annular outer diameter probe arranged outside the inner diameter probe and coaxial with it. The outer diameter probe has a through opening along the radial direction. The outer surface of the inner diameter probe is uniformly provided with a plurality of first air holes, and the inner surface of the outer diameter probe is uniformly provided with a plurality of second air holes; a flat seat, which is placed between the outer diameter probe and the inner diameter probe. The top of the flat seat is higher than the bottom surface of the opening of the outer diameter probe. The flat seat has a receiving groove corresponding to the opening of the outer diameter probe; a height probe, which has a first measuring part and a second measuring part arranged sequentially along the height direction. The bottom surface of the first measuring part has a third air hole, and the top surface of the second measuring part has a fourth air hole. The height probe is configured to enter the receiving groove of the flat seat through the opening of the outer diameter probe, such that the third air hole is located above the top of the roller placed on the flat seat, and the fourth air hole is located below the bottom of the roller.

[0005] In the preferred embodiment of the above-mentioned roller inner and outer diameter and height testing device, the test seat and height probe are disposed on a base, the base is provided with a guide rail, the height probe is slidably mounted on the guide rail by means of a base plate, and the base plate is driven to move by a first driving device.

[0006] In the preferred embodiment of the above-mentioned roller inner and outer diameter and height testing device, the top surface of the flat seat is provided with a plurality of grooves, and a pad is disposed in the groove, with the top surface of each pad being at the same horizontal plane.

[0007] In the preferred embodiment of the above-mentioned roller inner and outer diameter and height testing device, the height probe further includes a main body, and the height of the first measuring part and the second measuring part on the main body is adjustable.

[0008] In the preferred embodiment of the above-mentioned roller inner and outer diameter and height testing device, the top of the inner diameter probe is located above the top of the outer diameter probe.

[0009] In the preferred embodiment of the above-mentioned roller inner and outer diameter and height testing device, a first limiting block is installed on the top surface of the base along the length direction of the guide rail, and the first limiting block is located on the side of the base plate away from the test seat.

[0010] In the preferred embodiment of the above-mentioned roller inner and outer diameter and height testing device, a second limiting block is installed on the top surface of the base along the length direction of the guide rail. The second limiting block is located opposite the bottom plate on the side close to the test seat. When the ends of the first measuring part and the second measuring part move to a predetermined position in the receiving groove, the bottom plate abuts against the second limiting block.

[0011] In the preferred embodiment of the above-mentioned roller inner and outer diameter and height testing device, the first driving device is a cylinder or a lead screw module. Attached Figure Description

[0012] Figure 1 is a front view of this utility model;

[0013] Figure 2 is a front view of this utility model;

[0014] Figure 3 is a top view of this utility model;

[0015] Figure 4 is a schematic diagram of the structure of the inner diameter probe and the outer diameter probe;

[0016] Figure 5 is a schematic diagram of the height probe;

[0017] Figure 6 is a schematic diagram of the height probe (II).

[0018] In the figure: test seat 1, inner diameter probe 2, first air hole 21, outer diameter probe 3, opening 31, second air hole 32, flat seat 4, receiving groove 41, groove 42, pad layer 43, height probe 5, first measuring part 51, third air hole 511, second measuring part 52, fourth air hole 521, main body 53, base 6, guide rail 7, bottom plate 8, first driving device 9, first limiting block 10, second limiting block 11. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] As shown in Figures 1 to 6, the roller inner and outer diameter and height testing device of this utility model includes: a testing base 1, equipped with a columnar inner diameter probe 2 arranged vertically and an annular outer diameter probe 3 located outside the inner diameter probe 2 and coaxial with it; the outer diameter probe 3 has a through opening 31 along the radial direction; the outer surface of the inner diameter probe 2 has a plurality of first air holes 21 evenly distributed, and the inner surface of the outer diameter probe 3 has a plurality of second air holes 32 evenly distributed; a flat seat 4, placed between the outer diameter probe 3 and the inner diameter probe 2, with the top of the flat seat 4 higher than the opening 31 of the outer diameter probe 3. On the bottom surface, the flat seat 4 has a receiving groove 41 corresponding to the opening 31 of the outer diameter measuring head 3; the height measuring head 5 has a first measuring part 51 and a second measuring part 52 arranged sequentially along the height direction. The bottom surface of the first measuring part 51 has a third air hole 511, and the top surface of the second measuring part 52 has a fourth air hole 521. The height measuring head 5 is configured to enter the receiving groove 41 of the flat seat 4 through the opening 31 of the outer diameter measuring head 3, so that the third air hole 511 is located above the top of the roller placed on the flat seat 4, and the fourth air hole 521 is located below the bottom of the roller.

[0023] Referring to Figures 1 to 4, the test seat 1 includes at least an outer diameter probe 3 and an inner diameter probe 2. The outer diameter probe 3 has a circular cross-section, and the inner diameter probe 2 has a columnar structure. The inner diameter probe 2 is located inside the outer diameter probe 3. The inner diameter probe 2 and the outer diameter probe 3 are coaxial. The outer diameter of the inner diameter probe 2 is smaller than the inner diameter of the outer diameter probe 3, so that when the inner diameter probe 2 is placed inside the outer diameter probe 3, there is a gap between the inner diameter probe 2 and the outer diameter probe 3. The disc-shaped flat seat 4 is placed in the gap between the inner diameter probe 2 and the outer diameter probe 3. Along the radial direction, part of the sidewall of the outer diameter probe 3 is penetrated to form an opening 31. The top surface of the flat seat 4 is higher than the bottom surface of the opening 31 of the outer diameter probe 3. When the circular roller is sleeved on the inner diameter probe 2 and falls onto the flat seat 4, the bottom end of the roller is higher than the bottom surface of the opening 31 of the outer diameter probe 3. The flat seat 4 has a receiving groove 41 in the vertical direction.

[0024] Referring to Figure 4, the inner diameter probe 2 has several first air holes 21 on the outer wall near the plane seat 4. The first air holes 21 are connected to an external air pump through an air passage opened inside the inner diameter probe 2. The first air holes 21 are evenly distributed around the central axis of the inner diameter probe 2. The outer diameter probe 3 has several second air holes 32 on its inner side. The second air holes 32 are connected to an external air pump through an air passage opened inside the outer diameter probe 3. The second air holes 32 are evenly distributed around the central axis of the outer diameter probe 3.

[0025] Referring to Figures 5 and 6, the height probe 5 has at least a first measuring part 51 and a second measuring part 52 arranged sequentially in the vertical direction. The first measuring part 51 has a third air hole 511 on the bottom surface of one end facing the test seat 1, and the second measuring part 52 has a fourth air hole 521 on the top surface of one end facing the test seat 1. Both the third air hole 511 and the fourth air hole 521 are connected to an external air pump. The height probe 5 is configured to move toward the test seat 1. When the roller is sleeved on the inner diameter probe 2 and falls onto the flat seat 4, the first measuring part 51 of the height probe 5 can extend above the top of the roller, and the second measuring part 52 can extend into the receiving groove 41 and be placed below the bottom of the roller. At this time, the third air hole 511 is located directly above the top of the roller, and the fourth air hole 521 is located directly below the bottom of the roller.

[0026] It should be noted that the first measuring part 51 and the second measuring part 52 of the inner diameter probe 2, the outer diameter probe 3, and the height probe 5 are all equipped with air pressure sensors.

[0027] Before measuring the outer diameter, inner diameter, and height of the roller, the roller is first placed into and fitted onto the inner diameter measuring head 2 from the top. Under gravity, the roller falls onto the flat seat 4. Then, an air pump supplies air to the first air hole 21 of the inner diameter measuring head 2. The airflow from the first air hole 21 enters the gap between the inner diameter measuring head 2 and the inner wall of the roller. A pressure sensor measures and records the airflow pressure in this gap. This airflow pressure is compared with the pressure value obtained by the measurement calibration gauge. When the pressure value in this gap falls within a certain range of the pressure value obtained by the measurement calibration gauge, the inner diameter of the roller can be determined. After the inner diameter measurement is completed, the air pump stops supplying air to the first air hole 21. Similarly, the outer diameter of the roller is measured... During testing, only an air pump needs to supply air to the second air hole 32, and the air pressure value between the inner wall of the outer diameter measuring head 3 and the outer wall of the roller is detected and recorded by the air pressure sensor to measure the outer diameter of the roller. When measuring the height of the roller, firstly, the first measuring part 51 and the second measuring part 52 of the height measuring head 5 are controlled to move towards the roller, so that the third air hole 511 of the first measuring part 51 is located directly above the top of the roller, and the fourth air hole 521 of the second measuring part 52 enters the receiving groove 41 of the flat seat 4. Then, an air pump is used to supply air to the third air hole 511 and the fourth air hole 521, and the air pressure sensor is used to detect the airflow pressure at the top and bottom of the roller to obtain the height of the roller.

[0028] This application greatly improves the efficiency of roller size detection and reduces production costs by using an inner diameter probe 2 to detect the inner diameter of the roller, an outer diameter probe 3 to detect the outer diameter of the roller, and a height probe 5 to detect the height of the roller.

[0029] In one or more embodiments, the test base 1 and the height probe 5 are disposed on the base 6, the base 6 is provided with a guide rail 7, the height probe 5 is slidably mounted on the guide rail 7 by means of a base plate 8, and the base plate 8 is driven to move by a first driving device 9.

[0030] Referring to Figures 1 to 3, the first driving device 9 can be a driving cylinder or a lead screw module. When the first driving device 9 is a driving cylinder, the extended shaft end of the driving cylinder is connected to the base plate 8. By controlling the extension and retraction of the extended shaft end of the driving cylinder, the base plate 8 and the height probe 5 can be moved closer to or further away from the test seat 1, thereby realizing the automated detection of the height probe 5. At the same time, the base plate 8 is slidably mounted on the base 6 with the help of the guide rail 7, which can reduce the friction force when the base plate 8 moves.

[0031] In one or more embodiments, the top surface of the flat seat 4 has a plurality of grooves 42, and a pad 43 is disposed in the grooves 42, with the top surface of each pad 43 being at the same horizontal plane. Referring to Figure 2, the top surfaces of the plurality of pads 43 being at the same horizontal plane allows the roller to be placed vertically when it falls onto the flat seat 4, improving the accuracy of roller size measurement; when it is necessary to raise or lower the roller placement height, the pads 43 in the grooves 42 can be replaced and a pad 43 of predetermined thickness can be installed.

[0032] In one or more embodiments, the height probe 5 further includes a main body 53, and the height of the first measuring part 51 and the second measuring part 52 on the main body 53 is adjustable.

[0033] Referring to Figures 1, 2, 5, and 6, the first measuring part 51 and the second measuring part 52 can be bolted to the main body 53. With this arrangement, the height of the first measuring part 51 and the second measuring part 52 on the main body 53 can be controlled, thereby adjusting the distance between the first measuring part 51 and the second measuring part 52 to accommodate rollers of different heights and improve the measurement range of roller dimensions of this application.

[0034] In one or more embodiments, the top of the inner diameter probe 2 is located above the top of the outer diameter probe 3. Referring to Figure 4, this arrangement facilitates the placement of the roller on the inner diameter probe 2 by the operator, improving the efficiency of roller size measurement.

[0035] In one or more embodiments, a first limiting block 10 is installed on the top surface of the base 6 along the length direction of the guide rail 7, and the first limiting block 10 is located opposite the base plate 8 on the side away from the test seat 1; a second limiting block 11 is installed on the top surface of the base 6 along the length direction of the guide rail 7, and the second limiting block 11 is located opposite the base plate 8 on the side closer to the test seat 1. When the ends of the first measuring part 51 and the second measuring part 52 move to a predetermined position in the receiving groove 41, the base plate 8 abuts against the second limiting block 11.

[0036] Referring to Figures 1 to 3, when the first driving device 9 controls the base plate 8 to move away from the test seat 1, the first limiting block 10 is used to restrict the position of the base to prevent the base from moving out of the guide rail 7 and improve the stability when measuring the height of the roller; when the first driving device 9 controls the base plate 8 to move towards the test seat 1, so that the first measuring part 51 and the second measuring part 52 of the height probe 5 move into place, the base plate 8 abuts against the second limiting block 11. Through this setting, by preventing the first measuring part 51 and the second measuring part 52 of the height probe 5 from hitting the inner diameter probe 2, the accurate positioning of the height probe 5 is ensured.

[0037] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A device for testing the inner and outer diameters and height of a roller, characterized in that, include: A test stand includes a vertically oriented cylindrical inner diameter probe and a coaxial annular outer diameter probe located outside the inner diameter probe. The outer diameter probe has a through opening along its radial direction. The outer surface of the inner diameter probe has a plurality of first air holes evenly distributed, and the inner surface of the outer diameter probe has a plurality of second air holes evenly distributed. A planar seat is placed between the outer diameter probe and the inner diameter probe. The top of the planar seat is higher than the bottom surface of the opening of the outer diameter probe. The planar seat has a receiving groove corresponding to the opening of the outer diameter probe. A height probe has a first measuring part and a second measuring part arranged sequentially along the height direction. The bottom surface of the first measuring part has a third air hole, and the top surface of the second measuring part has a fourth air hole. The height probe is configured to enter the receiving groove of the planar seat through the opening of the outer diameter probe, such that the third air hole is above the top of a roller placed on the planar seat, and the fourth air hole is below the bottom of the roller.

2. The roller inner and outer diameter and height testing device according to claim 1, characterized in that: The test stand and height probe are disposed on a base, the base is provided with a guide rail, the height probe is slidably mounted on the guide rail by means of a base plate, and the base plate is driven to move by a first driving device.

3. The roller inner and outer diameter and height testing device according to claim 1, characterized in that: The top surface of the flat seat has several grooves, and a pad is disposed in the groove. The top surface of each pad is on the same horizontal plane.

4. The roller inner and outer diameter and height testing device according to claim 1, characterized in that: The height probe also includes a main body, and the heights of the first measuring part and the second measuring part on the main body are adjustable.

5. The roller inner and outer diameter and height testing device according to claim 1, characterized in that: The top of the inner diameter probe is located above the top of the outer diameter probe.

6. The roller inner and outer diameter and height testing device according to claim 2, characterized in that: Along the length of the guide rail, a first limiting block is installed on the top surface of the base, and the first limiting block is located on the side of the base plate away from the test seat.

7. The roller inner and outer diameter and height testing device according to claim 2, characterized in that: Along the length of the guide rail, a second limiting block is installed on the top surface of the base. The second limiting block is located opposite the base plate on the side near the test seat. When the ends of the first measuring part and the second measuring part move to a predetermined position in the receiving groove, the base plate abuts against the second limiting block.

8. The roller inner and outer diameter and height testing device according to claim 2, characterized in that: The first driving device is a cylinder or a lead screw module.

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