Inside diameter measuring device

Abstract

The utility model relates to a kind of inner diameter measuring devices, including disc body, reinforcing body, crossbeam, swing piece, measuring point, magnetic piece and inner diameter measuring dial gauge;Reinforcing body is fixedly arranged on disc body, the outer wall of reinforcing body is in abutment with workpiece inner wall, and let slot is arranged between two reinforcing bodies;Crossbeam is fixedly arranged on disc body, and magnetic metal piece is fixedly arranged on crossbeam, and crossbeam is provided with perforation;Swing piece is hinged with crossbeam, two swing pieces are oppositely arranged at the both ends of crossbeam, and swing piece is arranged in let slot;Measuring point is fixedly arranged on the outer side wall of swing piece;Magnetic piece and magnetic metal piece are magnetically adsorbed, to make measuring point hide in let slot;The measuring head of inner diameter measuring dial gauge passes through perforation and pushes swing piece, to drive swing piece swing, and measuring point is in abutment with workpiece inner wall.The utility model can be very intuitive to judge whether workpiece is qualified, measurement error is small, effectively improve the accuracy of the present inner diameter measuring device, effectively prolong the service life of inner diameter measuring device.

Description

Technical Field

[0001] This utility model relates to the field of workpiece inspection technology, and in particular to an inner diameter measuring device. Background Technology

[0002] like Figure 1 The workpiece 200 shown needs to have its inner diameter and bottom measured using measuring tools during the production process to ensure that the produced workpiece 200 meets the requirements.

[0003] Chinese patent CN211855158U discloses an internal diameter measuring device for hydraulic engineering pipelines, including a placement box. A transmission gear is movably installed inside the placement box, and two transmission racks located on either side of the transmission gear are engaged inside the placement box. Positioning blocks are fixedly installed at the top of the transmission racks. During measurement, the device is inserted into the pipeline. Rotating a rotating rod drives the drive gear and transmission gear to rotate, causing the two transmission racks, which are mirror-distributed on either side of the transmission gear, to move outwards simultaneously. This causes the positioning blocks at the top of the two transmission racks to press against the inner wall of the pipeline, thus positioning the transmission gear at the center of the pipeline. This pulls the measuring rack located at the center of the transmission gear, causing its top to press against the inner wall of the pipeline for measurement. This internal diameter measuring device for hydraulic engineering pipelines can measure the internal diameter of a workpiece up to 200 mm. However, the lack of a mechanism to fix the transmission racks during measurement makes them prone to displacement, leading to large errors in the measurement results. Furthermore, this inner diameter measuring device can only measure the inner diameter of the workpiece. The determination of whether the workpiece is qualified is based on the comparison between the measured inner diameter value and the standard inner diameter value, which is not intuitive enough. Utility Model Content

[0004] Therefore, it is necessary to provide an inner diameter measuring device to address the problems of existing inner diameter measuring devices lacking corresponding limiting mechanisms, which makes the transmission rack prone to displacement during measurement, resulting in large errors in the measurement results. Furthermore, these devices can only measure the inner diameter of the workpiece, and the judgment of whether the workpiece is qualified is based on the comparison between the measured inner diameter value and the standard inner diameter value, which is not intuitive enough.

[0005] An internal diameter measuring device, comprising:

[0006] Disk body;

[0007] A reinforcing body is fixedly disposed on the disc body. The outer wall of the reinforcing body abuts against the inner wall of the workpiece. There are two reinforcing bodies, and a clearance groove is provided between the two reinforcing bodies.

[0008] A crossbeam is fixedly mounted on the disk body, and a magnetic metal part is fixedly mounted on the crossbeam. The crossbeam is provided with through holes.

[0009] A swing member is hinged to the crossbeam. There are two swing members, which are arranged opposite each other at both ends of the crossbeam and are located in the clearance groove.

[0010] The measuring point is fixedly located on the outer side wall of the swinging component;

[0011] A magnetic component, located at the end of the oscillating component away from the measuring point, is magnetically attracted to the magnetically adsorbing metal component, thereby concealing the measuring point within the clearance groove; and

[0012] An inner diameter measuring dial indicator, wherein the measuring head of the inner diameter measuring dial indicator passes through the perforation and pushes against the swinging component to drive the swinging component to swing, and the measuring point abuts against the inner wall of the workpiece.

[0013] The aforementioned inner diameter measuring device, through the cooperation of the disc body, reinforcing body, crossbeam, swinging component, measuring point, magnetic component, and inner diameter measuring dial indicator, allows for a very intuitive determination of whether a workpiece is qualified, making operation more convenient, reducing measurement errors, effectively improving the accuracy of this inner diameter measuring device, and making it easier for users to determine whether a workpiece is qualified. The magnetic component is attracted to the magnetic metal component, so that the measuring point is hidden within the clearance groove. In this way, during the assembly process of the inner diameter measuring device and the workpiece, it is ensured that the measuring point will not collide with the workpiece, effectively avoiding damage to the measuring point and effectively extending the service life of the inner diameter measuring device.

[0014] In one embodiment, the oscillating member includes an upper oscillating portion and a side oscillating portion connected to the upper oscillating portion, the upper oscillating portion and the side oscillating portion being perpendicular to each other, the measuring point being located on the side oscillating portion, and the magnetic element being located on the upper oscillating portion.

[0015] In one embodiment, the inner diameter measuring device further includes a hinge shaft, and a hinge hole is provided at the connection between the upper swing part and the side swing part. The end of the hinge shaft extends into the crossbeam through the hinge hole.

[0016] In one embodiment, the measuring point includes an upper measuring point and a lower measuring point, the upper measuring point being located on one of the swinging members and the lower measuring point being located on the other swinging member.

[0017] In one embodiment, the inner diameter measuring device further includes an abutment post, which is fixedly disposed on the upper swing portion, and the measuring head of the inner diameter measuring dial indicator passes through the perforation and pushes against the abutment post.

[0018] In one embodiment, the inner diameter measuring device further includes a rotating assembly, which is spaced apart along the circumference of the disc. The rotating assembly includes a limiting post and a roller. The limiting post is fixedly connected to the disc, and the roller is rotatably fitted outside the limiting post. The outer wall of the roller abuts against the inner wall of the workpiece.

[0019] In one embodiment, the inner diameter measuring device further includes a side depth measuring component, which includes a side depth measuring dial indicator and a side telescopic rod. The disc body is provided with a side through hole, and the reinforcing body is provided with a side telescopic hole and a first guide groove. The first guide groove communicates with the side telescopic hole. The side telescopic rod includes a main rod portion and a limiting portion connecting the main rod portion. The main rod portion passes through the side telescopic hole, and the limiting portion is located in the first guide groove. The measuring head of the side depth measuring dial indicator passes through the side through hole and pushes against the side telescopic rod. The lower end of the side telescopic rod passes through the side telescopic hole and abuts against the inner wall of the workpiece.

[0020] In one embodiment, the inner diameter measuring device further includes a center depth measuring component, which includes a center depth measuring dial indicator, a center guide seat, and a center telescopic rod. The disc body is provided with a center through hole, the reinforcing body is provided with a second guide groove, the center guide seat is fixedly connected to the reinforcing body, the center guide seat is provided with a center telescopic hole, the second guide groove communicates with the center telescopic hole, the center telescopic rod includes a measuring rod part and a positioning part connected to the measuring rod part, the measuring rod part passes through the center telescopic hole, the positioning part is provided in the second guide groove, the measuring head of the center depth measuring dial indicator passes through the center through hole and pushes the center telescopic rod, and the lower end of the center telescopic rod passes through the center telescopic hole and abuts against the inner wall of the workpiece. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the workpiece;

[0022] Figure 2 This is an assembly structure diagram of the inner diameter measuring device in one embodiment of the present utility model;

[0023] Figure 3 For example Figure 1 The diagram shows the internal structure of the inner diameter measuring device and the workpiece.

[0024] Figure 4 For example Figure 1 The diagram shows the internal structure of the side depth measuring component and the workpiece in the inner diameter measuring device shown.

[0025] Figure 5 For example Figure 1The diagram shows the internal structure of the depth measuring component in the inner diameter measuring device and the workpiece.

[0026] The meanings of the numbers in the attached diagram are as follows:

[0027] 100 - Inner diameter measuring device;

[0028] 10-Disc body;

[0029] 20-Reinforcing body, 21-Relief groove, 22-Side end expansion hole, 23-First guide groove, 24-Second guide groove;

[0030] 30-Crossbeam;

[0031] 40 - Swinging component, 41 - Upper swinging part, 42 - Side swinging part, 43 - Magnetic metal component.

[0032] 50 - Measurement point, 51 - Upper measurement point, 52 - Lower measurement point;

[0033] 60-Rotating assembly, 61-Limit post, 62-Roller;

[0034] 70 - Dial gauge for measuring inner diameter;

[0035] 80-Side depth measuring assembly; 81-Side depth measuring dial indicator; 82-Side telescopic rod;

[0036] 90-Middle depth measuring component, 91-Middle depth measuring dial indicator, 92-Middle guide seat, 93-Middle telescopic rod;

[0037] 200 - Workpiece. Detailed Implementation

[0038] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0044] Please see Figure 2 An inner diameter measuring device 100 according to one embodiment of the present utility model includes a disc body 10, a reinforcing body 20, a crossbeam 30, a swinging component 40, a hinge shaft, a measuring point 50, a magnetic component, and an inner diameter measuring dial indicator 70.

[0045] Please see Figure 2 The reinforcing body 20 is fixedly mounted on the disc body 10, and the outer wall of the reinforcing body 20 abuts against the inner wall of the workpiece 200. There are two reinforcing bodies 20, and a clearance groove 21 is provided between the two reinforcing bodies 20. The crossbeam 30 is fixedly mounted on the disc body 10, and a magnetic metal part 43 is fixedly mounted on the crossbeam 30. The crossbeam 30 is provided with through holes.

[0046] Please see Figure 3 The swing member 40 is hinged to the crossbeam 30. There are two swing members 40, positioned opposite each other at both ends of the crossbeam 30. Each swing member 40 is located within the clearance groove 21. Each swing member 40 includes an upper swing portion 41 and a side swing portion 42 connecting the upper swing portion 41. The upper swing portion 41 and the side swing portion 42 are perpendicular to each other. A hinge hole is provided at the connection point between the upper swing portion 41 and the side swing portion 42. The end of the hinge shaft extends through the hinge hole into the crossbeam 30, thus hinged to the swing member 40. The measuring point 50 is fixedly located on the outer wall of the side swing portion 42. A magnetic element is located on the upper swing portion 41 and is attracted to the magnetically attracted metal element 43, thus concealing the measuring point 50 within the clearance groove 21. In this way, during the assembly process of the inner diameter measuring device 100 and the workpiece 200, it can be ensured that the measuring point 50 will not collide with the workpiece 200, effectively avoiding damage to the measuring point 50 and effectively extending the service life of the inner diameter measuring device 100.

[0047] Please see Figure 3 The measuring head of the inner diameter measuring dial indicator 70 passes through the perforation and pushes against the upper swing part 41, driving the side swing part 42 to move outward, and the measuring point 50 abuts against the inner wall of the workpiece 200.

[0048] Please see Figure 3 The measuring point 50 includes an upper measuring point 51 and a lower measuring point 52. The upper measuring point 51 is located on one of the swinging components 40, and the lower measuring point 52 is located on the other swinging component 40. By simultaneously measuring the inner diameter of the workpiece 200 through the upper measuring point 51 and the lower measuring point 52, errors can be effectively reduced and the measurement accuracy of the inner diameter measuring device 100 can be improved.

[0049] Please see Figure 3 The inner diameter measuring device 100 also includes an abutment post, which is fixedly installed on the upper swing part 41. The measuring head of the inner diameter measuring dial indicator 70 passes through the perforation and pushes against the abutment post.

[0050] Referring to Figure 2, the inner diameter measuring device 100 further includes a rotating assembly 60. The rotating assembly 60 is spaced apart circumferentially along the disc body 10. The rotating assembly 60 includes a limiting post 61 and a roller 62. The limiting post 61 is fixedly connected to the disc body 10, and the roller 62 is rotatably fitted around the limiting post 61. The outer wall of the roller 62 abuts against the inner wall of the workpiece 200. The rotating assembly 60 makes the inner diameter measuring device 100 rotate more smoothly, effectively reducing errors and improving the measurement accuracy of the inner diameter measuring device 100.

[0051] Please see Figure 4 The inner diameter measuring device 100 further includes a side depth measuring component 80, which includes a side depth measuring dial indicator 81 and a side telescopic rod 82. The disc body 10 is provided with a side through hole, and the reinforcing body 20 is provided with a side telescopic hole 22 and a first guide groove 23. The first guide groove 23 communicates with the side telescopic hole 22. The side telescopic rod 82 includes a main rod part and a limiting part connecting the main rod part. The main rod part passes through the side telescopic hole 22, and the limiting part is provided in the first guide groove 23. The measuring head of the side depth measuring dial indicator 81 passes through the side through hole and pushes the side telescopic rod 82. The lower end of the side telescopic rod 82 passes through the side telescopic hole 22 and abuts against the inner wall of the workpiece 200.

[0052] Please see Figure 5The inner diameter measuring device 100 further includes a central depth measuring component 90, which includes a central depth measuring dial indicator 91, a central guide seat 92, and a central telescopic rod 93. The disc body 10 is provided with a central through hole, the reinforcing body 20 is provided with a second guide groove 24, the central guide seat 92 is fixedly connected to the reinforcing body 20, the central guide seat 92 is provided with a central telescopic hole, the second guide groove 24 communicates with the central telescopic hole, the central telescopic rod 93 includes a measuring rod part and a positioning part connected to the measuring rod part, the measuring rod part passes through the central telescopic hole, the positioning part is provided in the second guide groove 24, the measuring head of the central depth measuring dial indicator 91 passes through the central through hole and pushes the central telescopic rod 93, and the lower end of the central telescopic rod 93 passes through the central telescopic hole and abuts against the inner wall of the workpiece 200.

[0053] The inner diameter measuring device 100 also includes a positioning seat, which is disposed on the through hole, the side through hole and the middle through hole.

[0054] The detection principle of this inner diameter measuring device 100 is as follows: Since the measuring head of the inner diameter measuring dial indicator 70 passes through the positioning seat and pushes against the swing member 40, causing the swing member 40 to swing, when the measuring point 50 abuts against the inner wall of the standard workpiece, the value of the inner diameter measuring dial indicator 70 is 0. Thus, when the absolute value of the inner diameter measuring dial indicator 70 is greater than the standard error value, the workpiece 200 is a defective product; when the absolute value of the inner diameter measuring dial indicator 70 is not greater than the standard error value, the workpiece 200 is a qualified product.

[0055] Since the measuring head of the side depth measuring dial indicator 81 pushes against the side telescopic rod 82 through the side through hole, and the lower end of the side telescopic rod 82 abuts against the inner wall of the standard workpiece through the side telescopic hole 22, the value of the side depth measuring dial indicator 81 is 0. Therefore, when the absolute value of the side depth measuring dial indicator 81 is greater than the standard error value, the workpiece 200 is a defective product; when the absolute value of the side depth measuring dial indicator 81 is not greater than the standard error value, the workpiece 200 is a qualified product.

[0056] Since the measuring head of the center depth measuring dial indicator 91 passes through the center through hole and pushes against the center telescopic rod 93, and the lower end of the center telescopic rod 93 passes through the center telescopic hole and abuts against the inner wall of the standard workpiece, the value of the center depth measuring dial indicator 91 is 0. Therefore, when the absolute value of the center depth measuring dial indicator 91 is greater than the standard error value, the workpiece 200 is a defective product; when the absolute value of the center depth measuring dial indicator 91 is not greater than the standard error value, the workpiece 200 is a qualified product.

[0057] The beneficial effects of this utility model are as follows: Through the cooperation of the disc body 10, reinforcing body 20, crossbeam 30, swinging component 40, measuring point 50, magnetic component, and inner diameter measuring dial indicator 70, it is possible to intuitively determine whether the workpiece 200 is qualified, making operation more convenient, reducing measurement errors, effectively improving the accuracy of this inner diameter measuring device 100, and making it easier for users to determine whether the workpiece 200 is qualified. The magnetic component is attracted to the magnetic metal component 43, so that the measuring point 50 is hidden in the clearance groove 21. In this way, during the assembly process of the inner diameter measuring device 100 and the workpiece 200, it can be ensured that the measuring point 50 will not collide with the workpiece 200, effectively avoiding damage to the measuring point 50 and effectively extending the service life of the inner diameter measuring device 100.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An inner diameter measuring device, characterized in that, include: Disk body; A reinforcing body is fixedly disposed on the disc body. The outer wall of the reinforcing body abuts against the inner wall of the workpiece. There are two reinforcing bodies, and a clearance groove is provided between the two reinforcing bodies. A crossbeam is fixedly mounted on the disk body, and a magnetic metal part is fixedly mounted on the crossbeam. The crossbeam is provided with through holes. A swing member is hinged to the crossbeam. There are two swing members, which are arranged opposite each other at both ends of the crossbeam and are located in the clearance groove. The measuring point is fixedly located on the outer side wall of the swinging component; A magnetic component is provided at the end of the swing component away from the measuring point. The magnetic component is magnetically attracted to the magnetically attracted metal component so that the measuring point is hidden in the clearance groove. as well as An inner diameter measuring dial indicator, wherein the measuring head of the inner diameter measuring dial indicator passes through the perforation and pushes against the swinging component to drive the swinging component to swing, and the measuring point abuts against the inner wall of the workpiece.

2. The inner diameter measuring device according to claim 1, characterized in that, The swinging component includes an upper swinging part and a side swinging part connected to the upper swinging part. The upper swinging part and the side swinging part are perpendicular to each other. The measuring point is located on the side swinging part, and the magnetic component is located on the upper swinging part.

3. The inner diameter measuring device according to claim 2, characterized in that, It also includes a hinge shaft, and a hinge hole is provided at the connection between the upper swing part and the side swing part. The end of the hinge shaft passes through the hinge hole and extends into the crossbeam.

4. The inner diameter measuring device according to claim 1, characterized in that, The measuring point includes an upper measuring point and a lower measuring point. The upper measuring point is located on one of the swinging components, and the lower measuring point is located on the other swinging component.

5. The inner diameter measuring device according to claim 2, characterized in that, It also includes a stop post, which is fixedly installed on the upper swing part, and the measuring head of the inner diameter measuring dial indicator passes through the perforation and pushes against the stop post.

6. The inner diameter measuring device according to claim 1, characterized in that, It also includes a rotating assembly, which is spaced apart along the circumference of the disc body. The rotating assembly includes a limiting post and a roller. The limiting post is fixedly connected to the disc body, and the roller is rotatably fitted outside the limiting post. The outer wall of the roller abuts against the inner wall of the workpiece.

7. The inner diameter measuring device according to claim 1, characterized in that, It also includes a side depth measuring component, which includes a side depth measuring dial indicator and a side telescopic rod. The disc body is provided with a side through hole, and the reinforcing body is provided with a side telescopic hole and a first guide groove. The first guide groove communicates with the side telescopic hole. The side telescopic rod includes a main rod and a limiting part connected to the main rod. The main rod passes through the side telescopic hole, and the limiting part is provided in the first guide groove. The measuring head of the side depth measuring dial indicator passes through the side through hole and pushes the side telescopic rod. The lower end of the side telescopic rod passes through the side telescopic hole and abuts against the inner wall of the workpiece.

8. The inner diameter measuring device according to claim 1, characterized in that, It also includes a central depth measuring component, which comprises a central depth measuring dial indicator, a central guide seat, and a central telescopic rod. The disc body is provided with a central through hole, the reinforcing body is provided with a second guide groove, the central guide seat is fixedly connected to the reinforcing body, the central guide seat is provided with a central telescopic hole, the second guide groove communicates with the central telescopic hole, the central telescopic rod includes a measuring rod part and a positioning part connected to the measuring rod part, the measuring rod part passes through the central telescopic hole, the positioning part is provided in the second guide groove, the measuring head of the central depth measuring dial indicator passes through the central through hole and pushes the central telescopic rod, and the lower end of the central telescopic rod passes through the central telescopic hole and abuts against the inner wall of the workpiece.

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