Spline detection device and detection method

Abstract

The invention relates to a spline detection device and a detection method. The device comprises a base; the ring go gauge is connected to the base through a first driving mechanism, the first driving mechanism comprises a mounting seat, a connecting seat and an elastic piece, the mounting seat can move relative to the base, the connecting seat can move relative to the mounting seat, the ring go gauge can rotate relative to the connecting seat, and the connecting seat overcomes the elastic force of the elastic piece when moving relative to the mounting seat; the first detection assembly is used for detecting relative movement between the connecting seat and the mounting seat; the second detection assembly detects the rotation angle of the ring go gauge relative to the connecting seat; and the second driving mechanism is used for being connected with the tested part, limiting the axial movement of the tested part and driving the tested part to rotate around the axis of the tested part. According to the device, the detection of the size of the spline of the part is completed through one device, the detection work of the spline of the part can be automatically carried out, only one station needs to be arranged and one part transfer procedure needs to be carried out, and therefore batch part detection work is efficiently carried out.

Description

Technical Field

[0001] The invention relates to the field of part spline detection technology, and in particular to a spline detection device and a detection method. Background Art

[0002] Shaft parts with splines are commonly used mechanical transmission parts, and are often used to transmit torque in transmission structures. Shaft parts with splines used in precision transmission structures have high spline precision requirements and need to pass strict testing before they can be used.

[0003] At present, the inspection of splines on parts is mainly carried out through spline go gauges and spline stop gauges. During the inspection process, the spline under test should be able to pass the spline go gauge, otherwise it means that the spline size is too large and it is a defective product; the spline under test should not enter the spline stop gauge, otherwise it means that the spline size is too small and it is a defective product.

[0004] Since the spline go gauge detection and the spline no-stop gauge detection cannot be performed at the same time, the method of using the spline go gauge and the spline no-stop gauge to detect the splines of parts requires the design of corresponding detection mechanisms and workstations for the spline go gauge detection and the spline no-stop gauge detection respectively during the automation design of the parts detection system, resulting in more detection processes and part transfer processes, affecting the efficiency of batch parts detection. Summary of the invention

[0005] Based on the above description, the present invention provides a spline detection device to solve the problem that the method of using spline go gauge and spline no-stop gauge to detect the splines of parts in the related technology, when performing the automated design of the parts detection system, the spline go gauge detection and the spline no-stop gauge detection need to design corresponding detection mechanisms respectively, resulting in an increase in the detection process and the parts transfer process, affecting the efficiency of the batch detection of parts.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: In the first aspect, the present application provides a spline detection device, and the technical solution adopted is as follows: A spline detection device, comprising: Base; A ring-type through-gauge, which is connected to the base through a first driving mechanism, the first driving mechanism comprising a mounting seat, a connecting seat and an elastic member, the mounting seat is connected to the base and can move relative to the base along the axial direction of the ring-type through-gauge, the connecting seat is connected to the mounting seat and can move relative to the mounting seat along the axial direction of the ring-type through-gauge, the ring-type through-gauge is connected to the connecting seat and can rotate relative to the connecting seat around its own axial direction, the elastic member is arranged between the connecting seat and the mounting seat, and the connecting seat overcomes the elastic force of the elastic member when moving relative to the mounting seat along the axial direction of the ring-type through-gauge; A first detection component, which is disposed between the connecting seat and the mounting seat and is used to detect the relative movement between the connecting seat and the mounting seat; A second detection component is disposed between the connecting seat and the ring gauge and is used to detect the rotation angle of the ring gauge relative to the connecting seat; A second driving mechanism is connected to the base and is spaced apart from the ring gauge in the axial direction of the ring gauge. The second driving mechanism is used to connect to a measured part that is located between the second driving mechanism and the ring gauge and is coaxial with the ring gauge, and is used to limit the axial movement of the measured part and drive the measured part to rotate around its own axis.

[0007] Preferably, the second detection component includes an encoder and a transmission structure, the encoder is connected to the connecting seat and the axis of the rotating shaft is parallel to the axis of the ring gauge, the transmission structure connects the ring gauge and the rotating shaft of the encoder, and when the ring gauge rotates relative to the connecting seat, the rotating shaft of the encoder is driven to rotate through the transmission structure.

[0008] Preferably, when the ring gauge rotates relative to the connecting seat, the angle of rotation of the rotating shaft of the encoder driven by the transmission structure is greater than the angle of rotation of the ring gauge relative to the connecting seat.

[0009] Preferably, the first detection component comprises a laser displacement sensor connected to the mounting seat, and the laser displacement sensor is used to detect the distance between the laser displacement sensor and the connecting seat in the axial direction of the ring.

[0010] Preferably, a locking structure is further included, wherein the locking structure is arranged between the connecting seat and the ring gauge and is used to limit the rotation of the ring gauge relative to the connecting seat or to release the restriction.

[0011] Preferably, the locking structure comprises: A first friction member connected to the ring gauge; A second friction member, which is connected to the connecting seat and can move relative to the connecting seat along the axial direction of the ring gauge, and the second friction plate can move to contact with or break contact with the first friction plate; A locking driving member is connected to the connecting seat and the second friction member, and is used for driving the second friction member to move relative to the connecting seat.

[0012] Preferably, the second driving mechanism comprises: A motor connected to the base, wherein the motor output shaft is coaxial with the ring gauge; A clamping jaw is connected to the output shaft of the motor, and is used to clamp the measured part coaxial with the ring gauge. The clamping jaw is suitable for clamping the measured part through the clamping jaw, and the motor drives the clamping jaw to rotate, so as to drive the measured part to rotate around its own axis.

[0013] Preferably, the second driving mechanism further comprises a proximity switch, wherein the proximity switch and the clamp are distributed in a direction perpendicular to the axis of the motor output shaft, and a triggering member for triggering the proximity switch is connected to the clamp.

[0014] In a second aspect, the present application provides a spline detection method, which uses the spline detection device as described above to perform detection.

[0015] Compared with the prior art, the technical solution of the present application has at least the following beneficial technical effects: 1. When testing, the testing device of the present application places the tested part between the ring gauge and the second driving mechanism and makes it coaxial with the ring gauge. The second driving mechanism is connected to the tested part, and the tested part is restricted from axial movement by the second driving mechanism and driven to rotate by the second driving mechanism. The mounting seat in the first driving mechanism is moved close to the tested part, so that the connecting seat and the ring gauge are moved close to the tested part. For parts with normal or smaller spline size, the part spline can pass through the ring gauge smoothly. When the ring gauge moves close to the part until the end face abuts against the part spline, if the splines are aligned, the part spline can directly pass through the ring gauge. When the part spline and the ring gauge spline are not aligned, since the part rotates under the drive of the second driving mechanism, the part can also pass through the ring gauge when the spline is rotated to the spline alignment with the ring gauge. Therefore, when the mounting seat moves to the set stroke position, the part spline passes through the ring gauge, and the relative position of the connecting seat and the mounting seat is maintained in the initial state under the elastic force of the elastic member. The first detection component detects that there is no relative movement between the connecting seat and the mounting seat, thereby judging that the part size is not too large. For parts with larger spline size, the part spline cannot pass through the ring gauge. In the process of the ring gauge moving close to the part, the ring gauge and the part spline are always in an end face abutment state. Under the obstruction of the part, the ring gauge and the connecting seat and the mounting seat move relative to each other. When the mounting seat moves to the set stroke position, the first detection component detects the relative movement of the connecting seat and the mounting seat, thereby judging that the part spline size is larger and the part is unqualified. After the part spline passes through the ring gauge and the mounting seat moves to the set stroke position, the second driving mechanism drives the tested part to rotate in one direction to the initial position, and then rotates in the opposite direction by a set angle. With the cooperation of the part spline and the ring gauge spline, the part drives the ring gauge to rotate a certain angle relative to the connecting seat. Due to the matching clearance between the part spline and the ring gauge spline, there is a difference between the set rotation angle of the part and the angle at which the ring gauge is driven to rotate when the part rotates by the set angle. For parts with qualified spline size, the difference between the set rotation angle of the part and the angle at which the ring gauge is driven to rotate is within a reasonable range. The second detection component detects the angle at which the ring gauge rotates relative to the connecting seat during the process of the part rotating by the set angle, and compares it with the set angle driven by the second driving mechanism to rotate the part. If the difference is within the design range, the part spline is judged to be qualified. Otherwise, the part spline size is judged to be too small and the part is unqualified, and the detection of the part spline is completed. The present application can complete the detection of the size of the part spline through a device, and can realize the automation of the part spline detection work. When performing the automation design of the part detection system, only one workstation needs to be set up and a part transfer process needs to be performed once to complete the spline detection work, thereby efficiently performing batch part detection work.

[0016] 2. The present application detects the rotation angle of the ring gauge relative to the connecting seat through an encoder, and the detection accuracy is high. When the ring gauge rotates relative to the connecting seat, the angle of the rotating shaft of the encoder is driven by the transmission structure to be greater than the rotation angle of the ring gauge relative to the connecting seat. That is, the transmission structure amplifies the rotation angle of the ring gauge and inputs it into the input shaft of the encoder, so that the angle data detected by the encoder is larger, thereby amplifying the difference between the rotation angle of the ring gauge and the part to improve the detection accuracy.

[0017] 3. The present application sets a locking structure to limit the rotation of the ring gauge relative to the connecting seat or releases the restriction. When the ring gauge moves close to the measured part, the locking structure limits the rotation of the ring gauge relative to the connecting seat, so that the part driven to rotate by the second driving mechanism can be rotated relative to the ring gauge until the splines are aligned, so that the splines of the part whose spline size is not too large can pass through the ring gauge smoothly. After the part spline passes through the ring gauge, the locking structure can release the restriction so that the part and the ring gauge can be driven to rotate by the second driving mechanism to detect whether the spline size of the part is too small.

[0018] 4. The second driving mechanism of the present application is connected to the part to be measured through the cooperation of the motor and the clamp. The clamp can clamp or release the part to be measured, thereby facilitating the loading and unloading of the part to be measured. The second driving mechanism drives the part to rotate by the cooperation of the proximity switch and the trigger member. After the part spline passes through the ring gauge, the motor starts to drive the clamp to reset and rotate until the trigger member triggers the proximity switch, and the clamp rotates to the initial position. Then the motor runs in reverse to drive the clamp to rotate in the opposite direction until the proximity switch is triggered again. At this time, the clamp rotates one circle, driving the part to rotate one circle, thereby realizing precise control of the rotation angle of the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the tested part in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a spline detection device provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of the spline detection device provided by an embodiment of the present invention without the second driving mechanism and the supporting structure; Figure 4 A schematic diagram of the structure of a second driving mechanism in a spline detection device provided in an embodiment of the present invention; Figure 5 A schematic diagram of a support structure in a spline detection device provided in an embodiment of the present invention; Figure 6 A schematic diagram of the spline detection device provided in an embodiment of the present invention detecting a part under test, wherein the mounting seat is at a maximum stroke position and the spline of the part under test passes the ring gauge.

[0020] Description of reference numerals: 1. Base; 2. Ring gauge; 3. First driving mechanism; 31. Mounting seat; 32. Connecting seat; 321. Reference plane; 33. Elastic member; 34. Support seat; 35. Connecting ring; 4. Laser displacement sensor; 5. Second detection component; 51. Encoder; 52. Transmission structure; 521. Active gear; 522. Driven gear; 6. Second driving mechanism; 61. Motor; 62. Clamp; 63. Proximity switch; 64. Trigger; 7. Slide cylinder; 8. Locking structure; 81. First friction member; 82. Second friction member; 83. Locking driving member; 9. Support structure; 91. Support plate; 911. Arc groove; 92. Support roller. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0023] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0024] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0025] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0026] For ease of understanding, this embodiment uses detection Figure 1 The splined parts are shown for illustration purposes only.

[0027] Reference Figure 2-6 As shown, an embodiment of the present application provides a spline detection device, which includes a base 1, a ring gauge 2, a first driving mechanism 3, a first detection assembly, a second detection assembly 5 and a second driving mechanism 6, wherein the ring gauge 2 is connected to the base 1 through the first driving mechanism 3, the first driving mechanism 3 includes a mounting seat 31, a connecting seat 32 and an elastic member 33, the mounting seat 31 is connected to the base 1 and can move relative to the base 1 along the axial direction of the ring gauge 2, the connecting seat 32 is connected to the mounting seat 31 and can move relative to the mounting seat 31 along the axial direction of the ring gauge 2, the ring gauge 2 is connected to the connecting seat 32 and can rotate relative to the connecting seat 32 around its own axial direction, the elastic member 33 is arranged between the connecting seat 32 and the mounting seat 31, and the connecting seat 32 overcomes the elastic force of the elastic member 33 when moving relative to the mounting seat 31 along the axial direction of the ring gauge 2. The first detection assembly is arranged between the connecting seat 32 and the mounting seat 31, and is used to detect the relative movement between the connecting seat 32 and the mounting seat 31. The second detection assembly 5 is arranged between the connecting seat 32 and the ring gauge 2, and is used to detect the rotation angle of the ring gauge 2 relative to the connecting seat 32. The second driving mechanism 6 is connected to the base 1 and is spaced apart from the ring gauge 2 in the axial direction of the ring gauge 2. The second driving mechanism 6 is used to connect with the measured part located between the second driving mechanism 6 and the ring gauge 2 and coaxial with the ring gauge 2, and is used to limit the axial movement of the measured part and drive the measured part to rotate around its own axis.

[0028] Reference Figure 2 and Figure 6 As shown, during the inspection, the part to be tested is placed between the ring gauge 2 and the second driving mechanism 6 and is coaxial with the ring gauge 2. The part to be tested is connected to the part to be tested through the second driving mechanism 6. The part to be tested is restricted from axial movement by the second driving mechanism 6 and is driven to rotate by the second driving mechanism 6. The mounting seat 31 in the first driving mechanism 3 moves close to the part to be tested, so that the connecting seat 32 and the ring gauge 2 move close to the part to be tested.

[0029] For parts with normal or smaller spline size, the part spline can pass through the ring gauge 2 smoothly. When the ring gauge 2 moves close to the part until the end face abuts against the part spline, if the splines are aligned, the part spline can directly pass through the ring gauge 2. When the part spline and the spline of the ring gauge 2 are not aligned, since the part rotates under the drive of the second driving mechanism 6, the part can also pass through the ring gauge 2 when the spline is rotated to the spline of the ring gauge 2. Therefore, when the mounting seat 31 moves to the set stroke position, the part spline passes through the ring gauge 2, and the relative position of the connecting seat 32 and the mounting seat 31 is maintained in the initial state under the elastic force of the elastic member 33. The first detection component detects that there is no relative movement between the connecting seat 32 and the mounting seat 31, thereby judging that the part size is not too large.

[0030] For parts with oversized spline, the part spline cannot pass through the ring gauge 2. During the movement of the ring gauge 2 close to the part, the ring gauge 2 and the part spline are always in an end face abutment state. Under the obstruction of the part, the ring gauge 2 and the connecting seat 32 and the mounting seat 31 move relative to each other. When the mounting seat 31 moves to the set stroke position, the first detection component detects the relative movement of the connecting seat 32 and the mounting seat 31, thereby judging that the part spline size is oversized and the part is unqualified.

[0031] After the part spline passes through the ring gauge 2 and the mounting seat 31 moves to the set stroke position, the measured part is driven to rotate in one direction to the initial position by the second driving mechanism 6. During this process, one side tooth surface of the part spline teeth is kept in contact with one side tooth surface of the spline teeth of the ring gauge 2, and the rotation angle of the subsequent part is conveniently controlled at the initial position; then it is rotated in the opposite direction to a set angle. During this process, the part will first rotate relative to the ring gauge 2 until the other side tooth surface of the spline teeth contacts the spline tooth surface of the ring gauge 2, and then as the part continues to rotate, the spline of the ring gauge 2 drives the ring gauge 2 to rotate a certain angle relative to the connecting seat 32 under the cooperation of the part spline and the spline of the ring gauge 2. Due to the matching clearance between the part spline and the spline of the ring gauge 2, there is a difference between the set rotation angle of the part and the angle at which the ring gauge 2 is driven to rotate when the part rotates by the set angle. For parts with qualified spline dimensions, the difference between the set rotation angle of the part and the angle at which it drives the ring gauge 2 to rotate is within a reasonable range. The second detection component 5 detects the rotation angle of the ring gauge 2 relative to the connecting seat 32 during the part rotation process at the set angle, and compares it with the set angle driven by the second drive mechanism 6 to rotate the part. If the difference is within the design range, the part spline is judged to be qualified. Otherwise, the part spline size is judged to be too small and the part is unqualified, and the part spline detection is completed.

[0032] Based on the above description, the detection of the size of the part spline can be completed by one device, and the automation of the part spline detection work can be realized. When performing the automation design of the part detection system, only one workstation needs to be set up and a part transfer process needs to be performed to complete the spline detection work, thereby efficiently performing batch part detection work.

[0033] Reference Figure 2-3 As shown, specifically, the ring gauge 2 is connected to the connecting seat 32 through a connecting ring 35, and the connecting ring 35 is coaxially arranged with the ring gauge 2. One end of the connecting ring 35 is fixed to the ring gauge 2, and the other end is rotatably connected to the connecting seat 32 through a bearing. Correspondingly, a through hole for bearing installation is provided on the connecting seat 32, so that the measured part can pass through the connecting ring 35 and the through hole, thereby ensuring that the spline of the measured part passes through the ring gauge 2.

[0034] Reference Figure 2-3 As shown, the mounting seat 31 is installed on the base 1 through the sliding cylinder 7, and the piston rod axis of the sliding cylinder 7 is parallel to the axis of the ring gauge 2. The sliding cylinder 7 is used to realize the movable installation of the mounting seat 31 on the base 1, and the sliding cylinder 7 is used to drive the mounting seat 31 to move, so as to realize the automatic control of the movement of the mounting seat 31 and the precise control of the moving stroke.

[0035] Reference Figure 2-3 As shown, the connecting seat 32 is mounted on the mounting seat 31 through the cooperation of the guide rail and the slider, the guide rail is arranged along the axial direction of the ring gauge 2, the slider is slidably assembled on the guide rail, and the connecting seat 32 is fixedly mounted on the slider. The elastic member 33 is a spring, the axis of the spring is parallel to the axis of the ring gauge 2, and a support seat 34 is arranged on the mounting seat 31, the support seat 34 is spaced apart from the connecting seat 32 in the axial direction of the ring gauge 2, the spring is located between the connecting seat 32 and the support seat 34, and the two ends are respectively fixed to the connecting seat 32 and the support seat 34.

[0036] For parts whose spline size is not too large, when the spline of the tested part does not pass the ring gauge 2, and the end face of the part spline abuts against the end face of the ring gauge 2 to cause the connecting seat 32 to move relative to the mounting seat 31, the elastic member 33 undergoes elastic deformation, and then after the part spline passes the ring gauge 2, the connecting seat 32 can be reset to the initial position under the elastic force of the elastic member 33, and when the mounting seat 31 reaches the set stroke position, there is no relative movement between the connecting seat 32 and the mounting seat 31. That is, the elastic member 33 can ensure that the connecting seat 32 is reset to the initial position after the part spline passes the ring gauge 2, and when the mounting seat 31 reaches the set stroke position, it is determined whether the part spline size is too large based on the detection result of the first detection component at this time, so as to ensure the accuracy of the detection result. After completing the detection of a part, the elastic member 33 restores the relative position of the connecting seat 32 and the mounting seat 31 to the initial state, so as to carry out the detection of the next part.

[0037] Reference Figure 2-3 As shown, the first detection component includes a laser displacement sensor 4 connected to the mounting seat 31, and the laser displacement sensor 4 is used to detect the distance between it and the connecting seat 32 in the axial direction of the ring gauge 2. Specifically, the laser displacement sensor 4 is installed on the support seat 34, and a reference surface 321 perpendicular to the axis of the ring gauge 2 is provided on the side of the connecting seat 32 close to the support seat 34, and the laser displacement sensor 4 detects the distance between it and the reference surface 321. Therefore, the detection data of the laser displacement sensor 4 is used to determine whether the connecting seat 32 and the mounting seat 31 have moved relative to each other.

[0038] Reference Figure 2-3 As shown, the second detection component 5 includes an encoder 51 and a transmission structure 52. The encoder 51 is connected to the connection seat 32 and the axis of the rotating shaft is parallel to the axis of the ring gauge 2. The transmission structure 52 connects the ring gauge 2 and the rotating shaft of the encoder 51. When the ring gauge 2 rotates relative to the connection seat 32, the rotating shaft of the encoder 51 is driven to rotate through the transmission structure 52. Specifically, the transmission structure 52 can be driven by gear transmission or belt and pulley transmission to achieve the purpose of transmitting the rotating torque of the ring gauge 2 to the rotating shaft of the encoder 51. The encoder 51 is used to detect the rotation angle of the ring gauge 2, and the detection result is highly accurate, so that the difference between the rotation angle of the encoder 51 and the rotation angle of the measured part can be more accurately calculated to more accurately determine the spline accuracy of the measured part.

[0039] Furthermore, when the ring gauge 2 rotates relative to the connecting seat 32, the transmission structure 52 drives the rotating shaft of the encoder 51 to rotate at an angle greater than the rotating angle of the ring gauge 2 relative to the connecting seat 32, that is, the transmission structure 52 amplifies the rotating angle of the ring gauge 2 and inputs it to the rotating shaft of the encoder 51. Figure 2-3 As shown, in this embodiment, the transmission structure 52 is illustrated as a gear transmission, specifically including a driving gear 521 and a driven gear 522, the driving gear 521 is coaxially arranged around the ring gauge 2 and fixed with the ring gauge 2, the driven gear 522 is coaxially fixed with the rotating shaft of the encoder 51 and meshes with the driving gear 521, and the diameter of the driving gear 521 is set to be larger than the diameter of the driven gear 522. The angle data detected by the encoder 51 is larger, that is, the difference between the ring gauge 2 and the rotation angle of the part is amplified to improve the detection accuracy, and through the gear transmission, the error in the transmission process is small, which improves the accuracy of the detection result of the rotation angle of the ring gauge 2.

[0040] Reference Figure 2 and Figure 4As shown, the second driving mechanism 6 includes a motor 61 and a clamp 62. The motor 61 is connected to the base 1 and its output shaft is coaxial with the ring gauge 2. The clamp 62 is connected to the output shaft of the motor 61. The clamp 62 is used to clamp the measured part coaxial with the ring gauge 2. It is suitable for clamping the measured part through the clamp 62 and driving the clamp 62 to rotate through the motor 61 to drive the measured part to rotate around its own axis. Specifically, the clamp 62 adopts an electric centering clamp 62, which can stably clamp the part and keep the part coaxial with the ring gauge 2.

[0041] Reference Figure 4 As shown, in order to achieve the purpose of the second driving mechanism 6 driving the part to rotate the set angle, the second driving mechanism 6 also includes a proximity switch 63, the proximity switch 63 and the clamping jaw 62 are distributed in a direction perpendicular to the axis of the output shaft of the motor 61, and the clamping jaw 62 is connected to a triggering member 64 for triggering the proximity switch 63. Specifically, the proximity switch 63 is fixedly connected to the motor 61 through a fixing frame, and the triggering member 64 is installed on the side wall of the clamping jaw 62 in a rod shape.

[0042] When the ring gauge 2 moves close to the measured part, the motor 61 starts to drive the clamping jaw 62 to rotate in one direction, so that the part rotates in one direction so that the part spline passes through the ring gauge 2. When the mounting seat 31 moves to the maximum stroke position and the part spline passes through the ring gauge 2, the laser displacement sensor 4 detects that the connecting seat 32 and the mounting seat 31 do not move relative to each other, and the control system receives a signal and controls the motor 61 to reverse until the trigger member 64 triggers the proximity switch 63 and then stops, that is, the clamping jaw 62 and the part rotate to the initial position, and then the control system controls the motor 61 to flip again to trigger the proximity switch 63 again, and at this time the clamping jaw 62 clamps the part and rotates 360°, achieving the purpose of driving the part to rotate the set angle through the second drive mechanism 6.

[0043] Reference Figure 3 As shown, further, a locking structure 8 is provided between the connecting seat 32 and the ring gauge 2, and the locking structure 8 is used to limit the rotation of the ring gauge 2 relative to the connecting seat 32 or release the restriction. When the ring gauge 2 moves close to the measured part and the measured part is driven to rotate, the locking structure 8 limits the rotation of the ring gauge 2 relative to the connecting seat 32 to prevent the ring gauge 2 from rotating with the measured part during the process, and ensure that the part and the ring gauge 2 rotate relative to each other so that the part spline is aligned with the ring gauge 2 spline, so that the part spline with a not too large spline size can pass through the ring gauge 2 smoothly. When the ring gauge 2 is driven to rotate by the part later, the restriction of the locking structure 8 on the ring gauge 2 can be contacted, so that the ring gauge 2 and the part can rotate smoothly.

[0044] Reference Figure 3As shown, specifically, the locking structure 8 includes a first friction member 81, a second friction member 82 and a locking drive member 83. The first friction member 81 is connected to the ring gauge 2, the second friction member 82 is connected to the connecting seat 32 and can move relative to the connecting seat 32 along the axial direction of the ring gauge 2, the second friction plate can move to contact or disengage with the first friction plate, and the locking drive member 83 connects the second friction member 82 and the connecting seat 32 to drive the second friction member 82 to move relative to the connecting seat 32. Specifically, the first friction member 81 is annular and coaxially fixedly connected to the ring gauge 2, so that the second friction member 82 can contact the first friction member 81 when the ring gauge 2 rotates to any position; the locking drive member 83 can be a cylinder, and further an electric cylinder, so as to drive the second friction member 82 to contact or disengage with the first friction member 81 through the locking drive member 83, and when in contact, the ring gauge 2 is limited to rotate relative to the connecting seat 32 by friction force, and when not in contact, the ring gauge 2 can freely rotate relative to the connecting seat 32.

[0045] Reference Figure 2 and Figure 5-6 As shown, in actual design, in order to facilitate the automatic loading and unloading of the measured part, the ring gauge 2 is set with the axis vertical, and a support structure 9 for supporting the measured part is set on the base 1. The support structure 9 is set between the ring gauge 2 and the second driving mechanism 6, and specifically includes two support plates 91 fixed on the base 1. The support plates 91 are perpendicular to the axis of the ring gauge 2. The two support plates 91 are spaced along the axial direction of the ring gauge 2. Two support rollers 92 are set on the top of one of the support plates 91 to support the measured part, and an arc groove 911 adapted to the cylindrical section at one end of the measured part is opened on the top of the other support plate 91, so that the part is supported by the two support plates 91 and the two support rollers 92, and the part is kept coaxial with the ring gauge 2 by the two support rollers 92 and the arc groove 911. In this way, the measured part can be placed on the support structure 9 or removed from the support structure 9 in the vertical direction through the external loading and unloading mechanism to realize automatic loading and unloading, thereby realizing the automation of part spline detection.

[0046] The embodiment of the present application also provides a spline detection method, which uses the spline detection device as described above to perform detection.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A spline detection device, characterized in that: include: Base (1); A ring gauge (2) is connected to the base (1) via a first driving mechanism (3), the first driving mechanism (3) comprising a mounting seat (31), a connecting seat (32) and an elastic member (33), the mounting seat (31) being connected to the base (1) and being movable relative to the base (1) along the axial direction of the ring gauge (2), the connecting seat (32) being connected to the mounting seat (31) and being movable relative to the mounting seat (31) along the axial direction of the ring gauge (2), the ring gauge (2) being connected to the connecting seat (32) and being rotatable relative to the connecting seat (32) around its own axial direction, the elastic member (33) being arranged between the connecting seat (32) and the mounting seat (31), and overcoming the elastic force of the elastic member (33) when the connecting seat (32) is moving relative to the mounting seat (31) along the axial direction of the ring gauge (2); A first detection component, which is arranged between the connecting seat (32) and the mounting seat (31) and is used to detect relative movement between the connecting seat (32) and the mounting seat (31); A second detection component (5) is disposed between the connecting seat (32) and the ring gauge (2) and is used to detect the rotation angle of the ring gauge (2) relative to the connecting seat (32); A second driving mechanism (6) is connected to the base (1) and is spaced apart from the ring gauge (2) in the axial direction of the ring gauge (2); the second driving mechanism (6) is used to connect to a part to be measured that is located between the second driving mechanism (6) and the ring gauge (2) and is coaxial with the ring gauge (2), and is used to limit the axial movement of the part to be measured and drive the part to be measured to rotate around its own axis.

2. The spline detection device according to claim 1, characterized in that: The second detection component (5) comprises an encoder (51) and a transmission structure (52); the encoder (51) is connected to the connecting seat (32) and the axis of the rotating shaft is parallel to the axis of the ring gauge (2); the transmission structure (52) connects the ring gauge (2) and the rotating shaft of the encoder (51); when the ring gauge (2) rotates relative to the connecting seat (32), the rotating shaft of the encoder (51) is driven to rotate through the transmission structure (52).

3. The spline detection device according to claim 2, characterized in that: When the ring gauge (2) rotates relative to the connecting seat (32), the angle at which the rotating shaft of the encoder (51) is driven to rotate by the transmission structure (52) is greater than the angle at which the ring gauge (2) rotates relative to the connecting seat (32).

4. The spline detection device according to claim 1, characterized in that: The first detection component comprises a laser displacement sensor (4) connected to the mounting seat (31), and the laser displacement sensor (4) is used to detect the distance between the laser displacement sensor and the connecting seat (32) in the axial direction of the ring.

5. The spline detection device according to claim 1, characterized in that: It also comprises a locking structure (8), which is arranged between the connecting seat (32) and the ring gauge (2) and is used to limit the rotation of the ring gauge (2) relative to the connecting seat (32) or to release the restriction.

6. The spline detection device according to claim 5, characterized in that: The locking structure (8) comprises: A first friction member (81) connected to the ring gauge (2); A second friction member (82) connected to the connecting seat (32) and movable relative to the connecting seat (32) along the axial direction of the ring gauge (2), wherein the second friction plate can be moved to contact or be out of contact with the first friction plate; A locking driving member (83) is connected to the connecting seat (32) and the second friction member (82) and is used to drive the second friction member (82) to move relative to the connecting seat (32).

7. The spline detection device according to claim 1, characterized in that: The second driving mechanism (6) comprises: A motor (61) connected to the base (1), wherein an output shaft of the motor (61) is coaxial with the ring gauge (2); A clamping jaw (62) is connected to the output shaft of the motor (61), and is used to clamp the measured part coaxial with the ring gauge (2). The clamping jaw (62) is suitable for clamping the measured part through the clamping jaw (62), and driving the clamping jaw (62) to rotate through the motor (61) to drive the measured part to rotate around its own axis.

8. The spline detection device according to claim 7, characterized in that: The second driving mechanism (6) further comprises a proximity switch (63), wherein the proximity switch (63) and the clamping jaw (62) are distributed in a direction perpendicular to the axis of the output shaft of the motor (61), and the clamping jaw (62) is connected to a triggering member (64) for triggering the proximity switch (63).

9. A spline detection method, characterized in that: The detection is performed using a spline detection device as described in any one of claims 1 to 8.

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