Coaxiality detection device
By designing a coaxiality testing device and utilizing the combination of a testing groove and a testing gauge, the problem of coaxiality testing in the assembly process was solved, enabling rapid and accurate coaxiality tolerance testing and improving product quality and precision.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KOHWA PRECISION MOLDING (SHANGHAI) CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-05-19
AI Technical Summary
In assembly processes, existing technologies struggle to efficiently detect geometric tolerances, especially coaxiality, during mass production, which impacts product quality and precision.
A coaxiality testing device was designed, including a testing seat and a testing gauge. The coaxiality tolerance of the shaft under test is detected by the cooperation of the testing groove and the testing gauge in the X and Y directions. The coaxiality tolerance value is determined by the movement and interference of the testing gauge.
It enables rapid and accurate detection of the coaxiality tolerance of the shaft under test, ensuring the positional accuracy of the assembled product and improving the quality control capability of mass production.
Smart Images
Figure CN224262427U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of geometric tolerance detection technology, specifically a coaxiality detection device. Background Technology
[0002] In assembly processes, as product precision requirements increase, there are also increasingly stringent requirements for the form and position tolerances of individual components, in addition to the processing technology of individual items.
[0003] The assembly methods of individual components in the assembly are not the same, such as threaded fastening, adhesive bonding, hot fusion, or hook connection. Due to the differences in their mating structure and positioning and stress during the process, the various assembly methods have different effects on the form and position tolerances of the individual components in the assembly, which also poses new challenges to the increasingly high positional accuracy of the assembled products. While improving the assembly process to improve accuracy, for mass production, detecting the behavioral tolerances of the goods is also an important method to ensure product quality. Coaxiality is an important indicator of shaft product assembly, so a coaxiality detection device is provided. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a coaxiality detection device, which solves the problem that it is inconvenient to detect geometric tolerances in mass production during existing assembly processes.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a coaxiality testing device, comprising a testing seat, a testing groove on one side of the testing seat, a testing gauge slidably disposed in the testing seat, the sliding direction of the testing gauge being perpendicular to the opening direction of the testing groove, the top of the testing groove being open, and the bottom surface of the testing gauge being at the same horizontal plane as the top opening end face of the testing groove, a shaft to be tested being placed inside the testing groove, the distance between the shaft to be tested and the inner wall of the testing groove forming a coaxiality tolerance in the X-axis direction, and the distance between the testing gauge and the top of the shaft to be tested forming a coaxiality tolerance in the Y-axis direction.
[0006] Preferably, the detection seat has a movable groove, the detection gauge is slidably disposed in the movable groove, and the detection gauge passes through the inner end face of the movable groove.
[0007] Preferably, a fixing plate is fixedly provided on the outer end face of the movable groove, and an anti-detachment part is fixedly provided on the outer wall of the detection gauge. The anti-detachment part is slidably disposed in the movable groove, and the fixing plate abuts against the anti-detachment part to restrict the detection gauge in the movable groove.
[0008] Preferably, a spring is provided in the movable groove, and the two ends of the spring abut against the inner end face of the movable groove and the anti-detachment part, respectively.
[0009] Preferably, there are two sets of shafts to be tested, and a workpiece is installed between the two sets of shafts to be tested.
[0010] Preferably, bolts are fixedly installed between the two sets of the shafts to be tested and the workpiece.
[0011] Its beneficial effects are as follows:
[0012] This coaxiality testing device works by placing the shaft to be tested into the testing groove from above. If it cannot be placed into the testing groove, it indicates that the coaxiality tolerance in the X-axis direction exceeds the coaxiality tolerance threshold. If it can be placed into the testing groove, the distance between the shaft to be tested and the inner wall of the testing groove is the coaxiality tolerance value in the X-axis direction. Then, by pushing the testing gauge inward, the testing gauge moves towards the top of the testing groove. If the testing gauge interferes with the shaft to be tested, it indicates that the coaxiality tolerance in the Y-axis direction of the shaft to be tested exceeds the threshold. If no interference occurs, the distance between the shaft to be tested and the testing gauge is the coaxiality tolerance value in the Y-axis direction. This facilitates rapid coaxiality tolerance testing. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a cross-sectional view of the inner side of the detection groove of this utility model.
[0016] In the diagram: 1. Spring; 2. Detection seat; 3. Fixing plate; 4. Detection gauge; 5. Shaft to be tested; 6. Bolt; 7. Workpiece; 8. Detection groove; 9. Movable groove; 10. Anti-detachment part. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0019] This utility model discloses a coaxiality detection device, according to the attached... Figure 1-2 As shown, the device includes a detection seat 2, a detection groove 8 on one side of the detection seat 2, a detection gauge 4 slidably disposed in the detection seat 2, the sliding direction of the detection gauge 4 being perpendicular to the opening direction of the detection groove 8, the top opening of the detection groove 8, and the bottom surface of the detection gauge 4 being at the same level as the top opening end face of the detection groove 8. A shaft to be tested 5 is placed inside the detection groove 8, the distance between the shaft to be tested 5 and the inner wall of the detection groove 8 forms a coaxiality tolerance in the X-axis direction, and the distance between the top of the detection gauge 4 and the shaft to be tested 5 is a coaxiality tolerance in the Y-axis direction.
[0020] The testing seat 2 has a movable groove 9. The testing gauge 4 is slidably disposed in the movable groove 9 and passes through the inner end face of the movable groove 9. A fixing plate 3 is fixedly disposed on the outer end face of the movable groove 9. An anti-detachment part 10 is fixedly disposed on the outer wall of the testing gauge 4. The anti-detachment part 10 is slidably disposed in the movable groove 9. The fixing plate 3 abuts against the anti-detachment part 10 to restrict the testing gauge 4 in the movable groove 9. A spring 1 is disposed in the movable groove 9. The two ends of the spring 1 abut against the inner end face of the movable groove 9 and the anti-detachment part 10, respectively. By moving the testing gauge 4 toward the top of the testing groove 8, the anti-detachment part 10 squeezes the spring 1, and the spring 1 is compressed, so that the testing gauge 4 moves to the top of the testing groove 8. At this time, the distance between the shaft to be tested 5 and the testing gauge 4 is the coaxiality tolerance value in the Y-axis direction.
[0021] There are two sets of shafts 5 to be tested, and a workpiece 7 is installed between the two sets of shafts 5 to be tested. Bolts 6 are fixed between the two sets of shafts 5 to be tested and the workpiece 7, which facilitates the quick assembly of the two sets of shafts 5 to be tested.
[0022] Working principle: When using this device, the shaft to be tested 5 is placed into the detection groove 8 from above. If it cannot be placed into the detection groove 8, it means that the coaxiality tolerance in the X-axis direction exceeds the coaxiality tolerance threshold. If it can be placed into the detection groove 8, the distance between the shaft to be tested 5 and the inner wall of the detection groove 8 is the coaxiality tolerance value in the X-axis direction. Then, by pushing the detection gauge 4 inward, the detection gauge 4 moves towards the top of the detection groove 8. If the detection gauge 4 interferes with the shaft to be tested 5, it means that the coaxiality tolerance in the Y-axis direction of the shaft to be tested 5 exceeds the threshold. If no interference occurs, the distance between the shaft to be tested 5 and the detection gauge 4 is the coaxiality tolerance value in the Y-axis direction. This facilitates rapid coaxiality tolerance detection.
[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A coaxiality testing device, comprising a testing base (2), characterized in that, A detection groove (8) is provided on one side of the detection seat (2). A detection gauge (4) is slidably arranged in the detection seat (2). The sliding direction of the detection gauge (4) is perpendicular to the opening direction of the detection groove (8). The top of the detection groove (8) is open, and the bottom surface of the detection gauge (4) is at the same level as the top opening end face of the detection groove (8). The shaft to be tested (5) is placed inside the detection groove (8). The distance between the shaft to be tested (5) and the inner wall of the detection groove (8) forms a coaxiality tolerance in the X-axis direction. The distance between the top of the detection gauge (4) and the top of the shaft to be tested (5) is a coaxiality tolerance in the Y-axis direction.
2. The coaxiality detection device according to claim 1, characterized in that, The detection seat (2) has a movable groove (9), and the detection gauge (4) is slidably disposed in the movable groove (9), and the detection gauge (4) penetrates the inner end face of the movable groove (9).
3. The coaxiality detection device according to claim 2, characterized in that, A fixing plate (3) is fixedly provided on the outer end face of the movable groove (9), and an anti-detachment part (10) is fixedly provided on the outer wall of the detection gauge (4). The anti-detachment part (10) is slidably disposed in the movable groove (9), and the fixing plate (3) abuts against the anti-detachment part (10) so that the detection gauge (4) is restricted in the movable groove (9).
4. The coaxiality detection device according to claim 3, characterized in that, A spring (1) is provided in the movable groove (9), and the two ends of the spring (1) abut against the inner end face of the movable groove (9) and the anti-detachment part (10) respectively.
5. The coaxiality detection device according to claim 1, characterized in that, The shafts to be tested (5) are in two sets, and a workpiece (7) is installed between the two sets of shafts to be tested (5).
6. The coaxiality detection device according to claim 5, characterized in that, Bolts (6) are fixedly installed between the two sets of the shafts to be tested (5) and the workpiece (7).