Detection tool for detecting symmetry degree of spline
By designing a spline symmetry detection fixture, the problems of long time consumption and low precision in spline shaft detection are solved, and efficient and accurate spline shaft symmetry detection is achieved, which is suitable for workpieces of various specifications.
Patent Information
- Application Number
- CN202422914392.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In the prior art, symmetry detection of spline shafts is time-consuming, costly, and has low precision, especially due to the insufficient efficiency and precision of manual detection.
A spline symmetry detection fixture is designed, which includes a base, a mounting platform, a clamping mechanism and a detection mechanism. The mounting platform fixes the workpiece to be tested, the clamping mechanism fixes the workpiece, and the detection mechanism uses a micrometer for precise detection to adapt to the height adjustment of workpieces of different specifications.
It improves the efficiency and accuracy of spline axis symmetry detection, reduces manual operations, avoids detection position deviation, ensures detection stability and accuracy, and is suitable for workpieces of various specifications.
Smart Images
Figure CN223361338U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of detection tools, and in particular relates to a spline symmetry detection tool. Background Art
[0002] Spline shafts are commonly used in mechanical transmissions, mating with transmissions through splines to transmit power. Spline shaft symmetry, which refers to the symmetry between the axis and the gap between the splines or keyway width, is a crucial factor in ensuring mechanical transmission accuracy. Poor spline shaft symmetry can lead to unstable operation, increased noise, and even failure of the transmission.
[0003] In the existing technology, after automotive parts are processed with splines, the spline symmetry needs to be tested. The current conventional testing method is three-coordinate testing, which is time-consuming and occupies a large amount of testing resources. Manual testing of spline symmetry has the problems of slow testing efficiency and low testing accuracy. In particular, for splines of different specifications, factors such as the installation of the splines and the positioning of the testing equipment will affect the testing accuracy and efficiency. Therefore, a spline symmetry testing fixture is needed to solve the problems of the existing technology for spline symmetry testing, such as the long testing time and high testing cost when using three-coordinate testing, and the low testing efficiency and testing accuracy when using manual testing. Utility Model Content
[0004] The utility model provides a spline symmetry detection tool, aiming to solve the current technical problems.
[0005] The utility model is implemented as follows: a spline symmetry detection fixture includes a base, a mounting platform, a clamping mechanism and a detection mechanism, the mounting platform is fixedly mounted on the base and is provided with a mounting groove for mounting a workpiece to be measured; the clamping mechanism is fixedly mounted on the side of the mounting platform and is provided with a driving member and a clamping head; the workpiece to be measured is placed in the mounting groove, and the driving member drives the clamping head to abut against the workpiece to fix the workpiece; the detection mechanism is mounted on the side of the mounting platform and is provided with a dial indicator for performing symmetry detection on the splines of the workpiece to be measured.
[0006] Specifically, the workpiece to be measured is an integrated spline shaft structure, which includes a shaft body and a spline located at the end of the shaft body; the workpiece to be measured is placed in the mounting groove of the mounting table through the shaft body, and the spline extends to the outside of the mounting table.
[0007] Specifically, the base includes a bottom plate, a positioning block and a pad; the positioning block is fixedly installed on the bottom plate, and it is provided with a positioning portion whose shape is adapted to the shape of the mounting platform. The mounting platform is positioned and installed on the bottom plate by abutting against the positioning portion; the pad is fixedly installed on the side of the mounting platform for installing the clamping mechanism.
[0008] Specifically, rubber feet are provided at the four corners of the bottom plate, and carrying handles are provided on both sides of the top of the bottom plate.
[0009] Specifically, the shape of the mounting groove of the mounting platform is adapted to the shape of the shaft of the workpiece to be measured, and it is provided with at least a V-shaped groove section for centering the shaft.
[0010] Specifically, the clamping mechanism includes a clamping frame, a clamping rod, a locking piece and a clamping handle; one end of the clamping rod is rotatably mounted on the clamping frame, and a clamping head is mounted on the other end; the clamping handle is rotatably mounted on the clamping frame for clamping the clamping rod; the locking piece is installed between the clamping handle and the clamping rod for locking the clamping handle to the clamping rod.
[0011] Specifically, the locking member is a locking link, one end of the locking link is rotatably mounted on the pressure rod, and the other end is rotatably mounted on the pressure handle, and the locking link protrudes outward on one side of the pressure rod to form an elastic check portion; the pressure handle is pressed against the pressure rod through the elastic check portion of the locking link, and is locked to the pressure rod by compressing the elastic check portion.
[0012] Specifically, the pressing head is a rubber pressing head.
[0013] Specifically, the detection mechanism includes a detection box, a mounting clamp and a height adjustment mechanism; the height adjustment mechanism includes a slider, a guide assembly and an adjustment assembly; the slider is radially slidably installed on the detection box through the guide assembly, and the mounting clamp is fixedly installed on the slider; one end of the slider is connected to the adjustment assembly for adjusting the radial height of the mounting clamp; the micrometer is fixedly installed on the mounting clamp. The guide assembly of the present application preferably adopts a slide rail or guide rail type guide assembly in the prior art to ensure that the slider is radially slidably installed on the detection box. At the same time, in order to ensure the stability of the slider sliding, the guide assembly of the present application can add a guide rod to guide and support the slider to ensure the stable sliding of the slider. Since the slider slides radially, a reset spring can be provided on the guide rod to achieve the reset of the slider.
[0014] Specifically, the adjustment assembly includes a reference block, a limit rod and a height adjustment rod; the reference block is fixedly mounted on the detection box, the limit rod is fixedly mounted on the slider, and one end of the limit rod extends toward the reference block to form a limit end; the height adjustment rod is fixedly mounted on the slider, and one end of the height adjustment rod extends radially to the outside of the detection box to form an adjustment end; an adjustment frame is provided at a position corresponding to the detection box and the adjustment end of the height adjustment rod, a handle is rotatably mounted on the adjustment frame, the handle is provided with an arc-shaped abutting end, and a abutting plate is provided at a position corresponding to the arc-shaped abutting end on the adjustment frame, one end of the arc-shaped abutting end abuts against the abutting plate, and the other end extends toward the adjustment end and is hinged to the adjustment end.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] The spline symmetry detection fixture of the present application is provided with a mounting table on the base, and a mounting groove is provided on the mounting table for mounting the workpiece to be tested. A clamping mechanism and a detection mechanism are provided on the side of the mounting table to achieve the purpose of clamping the workpiece by the clamping mechanism during detection to ensure that the workpiece is placed stably and the detection position is accurately positioned, thereby achieving the purpose of improving detection efficiency and detection accuracy.
[0017] On the basis of the above, the base of the present application is provided with a positioning block and a pad block. The positioning block is used for positioning and installing the mounting table, and the pad block is used for installing the clamping mechanism, thereby achieving high positioning accuracy among the mounting table, the clamping mechanism and the detection mechanism, ensuring that when the detection mechanism is used to detect the workpiece spline, the clamping mechanism can accurately position and clamp the workpiece, and the relative position between the detection mechanism and the workpiece remains stable, so as to facilitate rapid detection of the workpiece spline and improve detection efficiency and detection accuracy.
[0018] On the basis of the above, the clamping mechanism of the present application includes a clamping frame, a pressure rod, a locking member and a pressure handle. The present application adopts a pressure handle and a pressure rod that are both rotatably installed on the clamping frame. By manually driving the pressure handle, the pressure rod is pressed toward the workpiece to drive the clamping head at the end of the pressure rod to clamp the workpiece. After clamping, the pressure rod and the pressure handle are locked by the locking member to ensure that the clamping force of the clamping head on the workpiece remains unchanged during the detection process, so that the position of the workpiece does not shift. At the same time, there is no need for manual clamping, which reduces manual workload and improves detection accuracy. In addition, the clamping head of the present application is made of rubber material and uses the elastic force of rubber to achieve flexible contact with the workpiece, which will not cause indentation damage to the surface of the workpiece.
[0019] On the basis of the above, the detection mechanism of the present application includes a detection box, a mounting clamp and a height adjustment mechanism, wherein the height adjustment mechanism is provided with a slider and an adjustment component, the slider is radially slidably installed on the detection box, and the mounting clamp is installed on the slider, so that the slider is driven by the adjustment component to slide radially to adjust the radial height of the mounting clamp, so that when testing workpieces of different specifications, the adaptability of the detection mechanism can be adjusted by adjusting the height of the mounting clamp, thereby improving the applicability of the product. In addition, the adjustment component of the present application includes a reference block, a limit rod and a height adjustment rod. By setting the reference block, the reference block with a height that matches the spline specification of the workpiece to be tested can be selected, so that the initial position of the micrometer is the reference position of the spline of the workpiece to be tested. At the same time, the height adjustment is performed through the height adjustment rod to achieve the purpose of improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 Schematic diagram of the structure of the spline symmetry detection fixture of this embodiment;
[0021] Figure 2This is a side view of the structure of the spline symmetry detection fixture of this embodiment;
[0022] Figure 3 Schematic diagram of the structure of the clamping mechanism of the spline symmetry detection fixture of this embodiment;
[0023] Figure 4 Schematic diagram of the structure of the detection mechanism of the spline symmetry detection fixture of this embodiment (the front cover of the detection box is not shown). DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0025] See also Figures 1-4 The utility model provides a spline symmetry detection fixture, which includes a base 1, a mounting platform 2, a clamping mechanism 3 and a detection mechanism 4. The mounting platform 2 is fixedly mounted on the base 1 and is provided with a mounting groove for mounting a workpiece 5 to be measured; the clamping mechanism 3 is fixedly mounted on the side of the mounting platform and is provided with a driving member and a clamping head 30; the workpiece to be measured is placed in the mounting groove, and the driving member drives the clamping head to stop against the workpiece to fix the workpiece; the detection mechanism 4 is mounted on the side of the mounting platform and is provided with a micrometer 40 for performing symmetry detection on the spline of the workpiece to be measured.
[0026] Furthermore, the workpiece 5 to be measured in this embodiment is an integrated spline shaft structure, which includes a shaft body and a spline located at the end of the shaft body; the spline shaft is placed in the mounting groove of the mounting table through the shaft body, and the spline extends to the outside of the mounting table. The shape of the mounting groove of the mounting table in this embodiment is compatible with the shape of the shaft body of the workpiece to be measured, and it is provided with at least a V-shaped groove section for centering the shaft body. The shaft body of the spline shaft in this embodiment is a stepped multi-shaft structure. In order to ensure the stable placement of the spline shaft, the mounting groove in this embodiment includes two V-shaped groove sections for centering the shaft body, and is also provided with a shaft body avoidance groove for avoiding the large-diameter shaft body section on the shaft body, facilitating rapid and stable placement.
[0027] The base 1 of this embodiment comprises a base plate 10, a positioning block 11, and a spacer 12. The positioning block 11 is fixedly mounted to the base plate and has a positioning portion shaped to match the mounting platform. The mounting platform 2 abuts against the positioning portion to be positioned and mounted on the base plate 10. The spacer 12 is fixedly mounted to the side of the mounting platform to accommodate the clamping mechanism. In this embodiment, rubber feet 13 are provided at the four corners of the base plate, and carrying handles 14 are provided on both sides of the top of the base plate.
[0028] The clamping mechanism 3 of this embodiment includes a clamping frame 31, a pressure rod 32, a locking member 33, and a pressure handle 34. One end of the pressure rod 32 is rotatably mounted on the clamping frame, and a clamping head 30 is mounted on the other end. The pressure handle 34 is rotatably mounted on the clamping frame and is used to clamp the pressure rod. The locking member 33 is installed between the pressure handle and the pressure rod and is used to lock the pressure handle to the pressure rod. The locking member of this embodiment is a locking link, one end of which is rotatably mounted on the pressure rod and the other end is rotatably mounted on the pressure handle. The locking link protrudes outward toward one side of the pressure rod to form an elastic check portion. The pressure handle is pressed against the pressure rod through the elastic check portion of the locking link and is locked to the pressure rod by compressing the elastic check portion. The clamping head of this embodiment is a rubber clamping head.
[0029] In addition, the detection mechanism 4 of this embodiment includes a detection box 41, a mounting clamp 42 and a height adjustment mechanism; the height adjustment mechanism includes a slider 43, a guide assembly and an adjustment assembly; wherein the guide assembly includes a slide rail 44, a guide rod 45 and a reset spring 46. The slide rail and the guide rod of this embodiment are relatively parallel and fixedly installed in the detection box along the radial direction. The slider is slidably installed on the slide rail at one end and is sleeved on the guide rod at the other end, and a reset spring is sleeved on the guide rod between the slider and the detection box; the mounting clamp is fixedly installed on the slider; one end of the slider is connected to the adjustment assembly for adjusting the radial height of the mounting clamp; the micrometer is fixedly installed on the mounting clamp.
[0030] Furthermore, the adjustment assembly of this embodiment includes a reference block 47, a limit rod 48 and a height adjustment rod 49; the reference block is fixedly mounted on the detection box, the limit rod is fixedly mounted on the slider, and one end thereof extends toward the reference block to form a limit end; the height adjustment rod is fixedly mounted on the slider, and one end thereof extends radially to the outside of the detection box to form an adjustment end; an adjustment frame is provided at a position corresponding to the detection box and the adjustment end of the height adjustment rod, a handle is rotatably mounted on the adjustment frame, the handle is provided with an arc-shaped abutting end, and a abutment plate is provided at a position corresponding to the arc-shaped abutment end on the adjustment frame, one end of the arc-shaped abutment end abuts against the abutment plate, and the other end extends toward the adjustment end and is hinged to the adjustment end.
[0031] Working principle of the present utility model: When using the spline symmetry detection fixture of this embodiment, the operator first selects a mounting table and a reference block with a shape that matches the specifications of the workpiece to be tested, installs the mounting table and the reference block, and installs the pad and the detection box on the base. Then, the micrometer is installed on the mounting clamp to complete the component installation before testing. When in use, the workpiece to be tested is placed in the mounting slot of the mounting table, the micrometer is zeroed, and the clamping head of the clamping mechanism is pressed against the shaft of the workpiece. The clamping head is pressed and locked to the workpiece by manually pressing the pressure handle. Finally, the micrometer is used to detect the spline of the workpiece. During the detection process, the clamping mechanism is manually reset to release the workpiece. The workpiece is rotated to adjust the detection position, and the radial height of the micrometer is adjusted by manually adjusting the handle to detect different positions of the spline.
[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A spline symmetry detection fixture, comprising a base, a mounting platform, a pressing mechanism, and a detection mechanism, characterized in that: The mounting table is fixedly mounted on the base and is provided with a mounting groove for mounting the workpiece to be measured; the clamping mechanism is fixedly mounted on the side of the mounting table and is provided with a driving member and a clamping head; the workpiece to be measured is placed in the mounting groove, and the driving member drives the clamping head to stop against the workpiece to fix the workpiece; the detection mechanism is mounted on the side of the mounting table and is provided with a micrometer for performing symmetry detection on the splines of the workpiece to be measured; the detection mechanism includes a detection box, a mounting clamp and a height adjustment mechanism; the height adjustment mechanism includes a slider, a guide assembly and an adjustment assembly; the slider is radially slidably mounted on the detection box through the guide assembly, and the mounting clamp is fixedly mounted on the slider; one end of the slider is connected to the adjustment assembly for adjusting the radial height of the mounting clamp; the micrometer is fixedly mounted on the mounting clamp.
2. A spline symmetry detection fixture according to claim 1, characterized in that: The workpiece to be measured is an integrated spline shaft structure, which includes a shaft body and a spline located at the end of the shaft body; the workpiece to be measured is placed in the mounting groove of the mounting table through the shaft body, and the spline extends to the outside of the mounting table.
3. A spline symmetry detection fixture according to claim 1, characterized in that: The base includes a bottom plate, a positioning block and a cushion block; the positioning block is fixedly installed on the bottom plate, and is provided with a positioning portion whose shape is adapted to the shape of the mounting platform, and the mounting platform is positioned and installed on the bottom plate by abutting against the positioning portion; the cushion block is fixedly installed on the side of the mounting platform for installing the clamping mechanism.
4. A spline symmetry detection fixture according to claim 3, characterized in that: The four corners of the bottom of the base plate are respectively provided with rubber feet, and both sides of the top of the base plate are respectively provided with carrying handles.
5. The spline symmetry detection fixture according to claim 2, characterized in that: The shape of the mounting groove of the mounting platform is adapted to the shape of the shaft of the workpiece to be measured, and the mounting platform is provided with at least a V-shaped groove section for centering the shaft.
6. A spline symmetry detection fixture according to claim 1, characterized in that: The clamping mechanism includes a clamping frame, a clamping rod, a locking piece and a clamping handle; one end of the clamping rod is rotatably mounted on the clamping frame, and the other end is provided with the clamping head; the clamping handle is rotatably mounted on the clamping frame for clamping the clamping rod; the locking piece is mounted between the clamping handle and the clamping rod for locking the clamping handle to the clamping rod.
7. A spline symmetry detection fixture according to claim 6, characterized in that: The locking member is a locking link, one end of the locking link is rotatably mounted on the pressure rod, and the other end is rotatably mounted on the pressure handle, and the locking link protrudes outward on one side of the rod toward the pressure rod to form an elastic check portion; the pressure handle is pressed against the pressure rod through the elastic check portion of the locking link, and is locked to the pressure rod by compressing the elastic check portion.
8. The spline symmetry detection fixture according to claim 1, characterized in that: The pressing head is a rubber pressing head.
9. The spline symmetry detection fixture according to claim 1, characterized in that: The adjustment assembly includes a reference block, a limit rod and a height adjustment rod; the reference block is fixedly mounted on the detection box, the limit rod is fixedly mounted on the slider, and one end of the limit rod extends toward the reference block to form a limit end; the height adjustment rod is fixedly mounted on the slider, and one end of the height adjustment rod extends radially to the outside of the detection box to form an adjustment end; an adjustment frame is provided at a position of the detection box corresponding to the adjustment end of the height adjustment rod, a handle is rotatably mounted on the adjustment frame, the handle is provided with an arc-shaped abutting end, and a abutting plate is provided at a position of the adjustment frame corresponding to the arc-shaped abutting end, one end of the arc-shaped abutting end abuts against the abutting plate, and the other end extends toward the adjustment end and is hinged to the adjustment end.