A spline detection device and a detection method

Abstract

The present invention relates to a spline detection device and a detection method. The device includes: a base; a ring go gauge connected to the base through a first driving mechanism. The first driving mechanism includes a mounting seat, a connecting seat and an elastic member. The mounting seat is movable relative to the base, the connecting seat is movable relative to the mounting seat, the ring go gauge is rotatable relative to the connecting seat, and the connecting seat moves relative to the mounting seat against the elastic force of the elastic member; a first detection component for detecting the relative movement between the connecting seat and the mounting seat; a second detection component for detecting the rotation angle of the ring go gauge relative to the connecting seat; a second driving mechanism for connecting with a part to be measured, restricting the axial movement of the part to be measured and driving the part to be measured to rotate around its own axis. This application completes the detection of the spline size of parts through one device, can realize the automation of the spline detection work of parts, and only needs to set one station and perform one part transfer process, so as to efficiently carry out the batch detection work of parts.

Description

Technical Field

[0001] The present invention relates to the field of spline detection technology for parts, and particularly relates 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. For splined shaft parts used in precision transmission structures, the spline accuracy requirements are high, and they need to pass strict inspections before being used.

[0003] Currently, the detection of splines on parts is mainly carried out through spline go gauges and spline no-go gauges. During the inspection process, the spline to be measured should be able to pass through the spline go gauge; otherwise, it indicates that the spline size is too large and it is a non-conforming product. The spline to be measured should not enter the spline no-go gauge; otherwise, it indicates that the spline size is too small and it is a non-conforming product.

[0004] Since spline go gauge detection and spline no-go gauge detection cannot be carried out simultaneously, when using the method of spline go gauge and spline no-go gauge to detect the splines of parts in the automated design of the part detection system, the corresponding detection mechanisms and workstations need to be designed separately for spline go gauge detection and spline no-go gauge detection, resulting in more detection processes and part transfer processes, and affecting the efficiency of batch part detection work. Summary of the Invention

[0005] Based on the above description, the present invention provides a spline detection device to solve the problem that in the automated design of the part detection system using the method of spline go gauge and spline no-go gauge to detect the splines of parts, the corresponding detection mechanisms need to be designed separately for spline go gauge detection and spline no-go gauge detection, resulting in an increase in detection processes and part transfer processes and affecting the efficiency of batch part detection work.

[0006] The technical solution of the present invention to solve the above technical problems is as follows:

[0007] In a first aspect, the present application provides a spline detection device, and the technical solution adopted is as follows:

[0008] A spline detection device includes:

[0009] A base;

[0010] A ring gauge is connected to the base through a first driving mechanism. The first driving mechanism includes 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 axis of the ring gauge. The connecting seat is connected to the mounting seat and can move relative to the mounting seat along the axis of the ring gauge. The ring gauge is connected to the connecting seat and can rotate relative to the connecting seat about its own axis. The elastic member is disposed between the connecting seat and the mounting seat, and the connecting seat moves relative to the mounting seat along the axis of the ring gauge against the elastic force of the elastic member;

[0011] A first detection component 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;

[0012] A second detection component is disposed between the connecting seat and the ring gauge and is used to detect the angle of rotation of the ring gauge relative to the connecting seat;

[0013] A second driving mechanism is connected to the base and is spaced from the ring gauge in the axial direction of the ring gauge. The second driving mechanism is used to connect to a measured part located between the second driving mechanism and the ring gauge and coaxial with the ring gauge, and is used to limit the axial movement of the measured part and drive the measured part to rotate about its own axis.

[0014] 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. When the ring gauge rotates relative to the connecting seat, the rotating shaft of the encoder is driven to rotate through the transmission structure.

[0015] Preferably, when the ring gauge rotates relative to the connecting seat, the angle by which the rotating shaft of the encoder is driven to rotate through the transmission structure is greater than the angle by which the ring gauge rotates relative to the connecting seat.

[0016] Preferably, the first detection component includes a laser displacement sensor connected to the mounting seat, and the laser displacement sensor is used to detect the distance between it and the connecting seat in the axial direction of the ring gauge.

[0017] Preferably, a locking structure is further included. The locking structure is disposed 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 release this limitation.

[0018] Preferably, the locking structure includes:

[0019] A first friction member, which is connected to the ring gauge;

[0020] A second friction member, which is connected to the connection seat and can move axially relative to the connection seat along the ring gauge, and the second friction plate can move into contact with or out of contact with the first friction plate;

[0021] A locking drive member, which connects the connection seat and the second friction member and is used to drive the second friction member to move relative to the connection seat.

[0022] Preferably, the second driving mechanism includes:

[0023] A motor connected to the base, and the output shaft of the motor is coaxial with the ring gauge;

[0024] Jaws, which are connected to the output shaft of the motor, and the jaws are used to clamp a part to be measured coaxial with the ring gauge, and are adapted to clamp the part to be measured through the jaws and drive the jaws to rotate through the motor to drive the part to be measured to rotate around its own axis.

[0025] Preferably, the second driving mechanism further includes a proximity switch, the proximity switch and the jaws are distributed in a direction perpendicular to the axis of the output shaft of the motor, and a trigger member for triggering the proximity switch is connected to the jaws.

[0026] In a second aspect, the present application provides a spline detection method, which is detected by using the spline detection device as described above.

[0027] Compared with the prior art, the technical solution of the present application has at least the following beneficial technical effects:

[0028] 1. When the detection device of the present application is detecting, the part to be measured is placed between the ring go gauge and the second driving mechanism and coaxially aligned with the ring go gauge. The second driving mechanism is connected to the part to be measured. The part to be measured is restricted from axial movement by the second driving mechanism and is driven to rotate by the second driving mechanism. The mounting base in the first driving mechanism moves closer to the part to be measured, causing the connecting seat and the ring go gauge to move closer to the part to be measured. For parts with normal or smaller spline sizes, the spline of the part can pass through the ring go gauge smoothly. When the ring go gauge moves closer to the part and its end face abuts against the spline of the part, if the splines are aligned, the spline of the part can directly pass through the ring go gauge. When the spline of the part is not aligned with the spline of the ring go gauge, since the part rotates under the drive of the second driving mechanism, the part can also pass through the ring go gauge when the splines are rotated to be aligned. Therefore, when the mounting base moves to the set travel position, the spline of the part passes through the ring go gauge, and the relative position between the connecting seat and the mounting base remains 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 base, thereby determining that the part size is not too large. For parts with larger spline sizes, the spline of the part cannot pass through the ring go gauge. During the process of the ring go gauge moving closer to the part, the ring go gauge and the spline of the part are always in an end-face abutting state. Blocked by the part, the ring go gauge and the connecting seat move relative to the mounting base. When the mounting base moves to the set travel position, the first detection component detects that the connecting seat and the mounting base have relative movement, thereby determining that the spline size of the part is too large and the part is unqualified. After the spline of the part passes through the ring go gauge and the mounting base moves to the set travel position, the part to be measured is driven by the second driving mechanism to rotate to the initial position in one direction and then rotate a set angle in the opposite direction. Under the cooperation of the spline of the part and the spline of the ring go gauge, the part drives the ring go gauge to rotate a certain angle relative to the connecting seat. Due to the clearance between the spline of the part and the spline of the ring go gauge, there is a difference between the set rotation angle of the part and the angle by which the ring go gauge rotates when the part rotates this set angle. For parts with qualified spline sizes, the difference between the set rotation angle of the part and the angle by which the ring go gauge rotates is within a reasonable range. The second detection component detects the angle by which the ring go gauge rotates relative to the connecting seat during the process of the part rotating the set angle and compares it with the set angle by which the second driving mechanism drives the part to rotate. If the difference is within the design range, it is determined that the spline of the part is qualified; otherwise, it is determined that the spline size of the part is too small and the part is unqualified, completing the detection of the spline of the part. The present application can complete the detection of the spline size of parts through one device, and can realize the automation of the spline detection work of parts. Moreover, when designing the automation of the part detection system, only one station needs to be set and one part transfer process needs to be carried out to complete the spline detection work, thereby efficiently carrying out batch part detection work.

[0029] 2. In the present application, the rotation angle of the ring gauge relative to the connecting seat is detected by an encoder, with high detection accuracy. When the ring gauge rotates relative to the connecting seat, the rotation angle of the rotating shaft of the encoder is driven by the transmission structure, which is 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 to the input shaft of the encoder, making the angle data detected by the encoder larger, thereby amplifying the difference in the rotation angles between the ring gauge and the part to improve the detection accuracy.

[0030] 3. In the present application, a locking structure is provided to restrict or release the rotation of the ring gauge relative to the connecting seat. During the process of the ring gauge moving closer to the part to be measured, the rotation of the ring gauge relative to the connecting seat is restricted by the locking structure, enabling the part driven to rotate by the second driving mechanism to rotate relative to the ring gauge until the splines are aligned, so that the splines of the part with a non-over-sized spline size can smoothly pass through the ring gauge. After the splines of the part pass through the ring gauge, the locking structure can release this restriction to enable the part and the ring gauge to be driven to rotate by the second driving mechanism for detecting whether the spline size of the part is too small.

[0031] 4. The second driving mechanism of the present application realizes the connection with the part to be measured through the cooperation of a motor and a clamp. The clamp can clamp or release the part to be measured, thus facilitating the loading and unloading of the part to be measured. The rotation angle of the part driven by the second driving mechanism is realized through the cooperation of a proximity switch and a trigger. After the splines of the part pass through the ring gauge, the motor starts to drive the clamp to rotate back to the initial position until the trigger triggers the proximity switch. Then the motor runs in the reverse direction to drive the clamp to rotate in the reverse direction until the proximity switch is triggered again. At this time, the clamp rotates one week, driving the part to rotate one week, achieving precise control of the rotation angle of the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of the part to be measured in the embodiment of the present invention;

[0033] Figure 2 is a schematic structural diagram of the spline detection device provided by the embodiment of the present invention;

[0034] Figure 3 is a schematic structural diagram of the spline detection device provided by the embodiment of the present invention after removing the second driving mechanism and the support structure;

[0035] Figure 4 is a schematic structural diagram of the second driving mechanism in the spline detection device provided by the embodiment of the present invention;

[0036] Figure 5 is a schematic structural diagram of the support structure in the spline detection device provided by the embodiment of the present invention;

[0037] Figure 6The figure shows a schematic diagram of the spline detection device provided by the embodiment of the present invention when detecting a part to be measured. Among them, the mounting base is in the maximum stroke position, and the spline of the part to be measured has passed through the ring through gauge.

[0038] Explanation of reference numerals:

[0039] 1. Base; 2. Ring through gauge; 3. First driving mechanism; 31. Mounting base; 32. Connecting seat; 321. Reference plane; 33. Elastic member; 34. Support seat; 35. Connecting ring; 4. Laser displacement sensor; 5. Second detection assembly; 51. Encoder; 52. Transmission structure; 521. Driving gear; 522. Driven gear; 6. Second driving mechanism; 61. Motor; 62. Claw; 63. Proximity switch; 64. Triggering member; 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 implementation manners

[0040] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown 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, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of the present application in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0042] It can be understood that spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. can be used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that in addition to the orientation shown in the figure, spatial relationship terms also include different orientations of the device during use and operation. For example, if the device in the drawing is flipped, the element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" other elements or features. Therefore, the exemplary terms "under" and "beneath" can include both the upper and lower orientations. In addition, the device can also include other orientations (for example, rotated 90 degrees or other orientations), and the spatial description terms used herein are accordingly interpreted.

[0043] 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. In the following embodiments, "connection", if there is a transfer of electrical signals or data between the connected circuits, modules, units, etc., should be understood as "electrical connection", "communication connection", etc.

[0044] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / include" or "has" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0045] For ease of understanding, this embodiment takes the detection Figure 1 of the splined part shown as an example.

[0046] Referring to Figures 2-6 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 component, a second detection component 5 and a second driving mechanism 6. Among them, 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 axially relative to the base 1 along the ring gauge 2. The connecting seat 32 is connected to the mounting seat 31 and can move axially relative to the mounting seat 31 along the ring gauge 2. The ring gauge 2 is connected to the connecting seat 32 and can rotate axially relative to the connecting seat 32 about its own axis. The elastic member 33 is arranged between the connecting seat 32 and the mounting seat 31. When the connecting seat 32 moves axially relative to the mounting seat 31 along the ring gauge 2, it overcomes the elastic force of the elastic member 33. The first detection component 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 component 5 is arranged between the connecting seat 32 and the ring gauge 2 and is used to detect the angle of rotation 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 from the ring gauge 2 axially of the ring gauge 2. The second driving mechanism 6 is used to connect to a 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 restrict the axial movement of the measured part and drive the measured part to rotate about its own axis.

[0047] Referring to Figure 2 and Figure 6As shown, during detection, the part to be measured is placed between the ring go gauge 2 and the second driving mechanism 6 and coaxially aligned with the ring go gauge 2. The second driving mechanism 6 is connected to the part to be measured, restricting the axial movement of the part to be measured and driving it to rotate. The mounting base 31 in the first driving mechanism 3 moves closer to the part to be measured, causing the connecting seat 32 and the ring go gauge 2 to move closer to the part to be measured.

[0048] For parts with normal or smaller spline dimensions, the spline of the part can smoothly pass through the ring go gauge 2. When the ring go gauge 2 moves closer to the part and its end face abuts against the spline of the part, if the splines are aligned, the spline of the part can directly pass through the ring go gauge 2. When the spline of the part and the spline of the ring go 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 go gauge 2 when it rotates to align the spline with the spline of the ring go gauge 2. Therefore, when the mounting base 31 moves to the set travel position, the spline of the part passes through the ring go gauge 2, and the relative position between the connecting seat 32 and the mounting base 31 remains 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 base 31, thereby determining that the part size is not too large.

[0049] For parts with too large spline dimensions, the spline of the part cannot pass through the ring go gauge 2. During the process of the ring go gauge 2 moving closer to the part, the ring go gauge 2 and the spline of the part are always in an end-face abutting state. Blocked by the part, the ring go gauge 2 and the connecting seat 32 move relative to the mounting base 31. When the mounting base 31 moves to the set travel position, the first detection component detects that the connecting seat 32 and the mounting base 31 have relative movement, thereby determining that the spline size of the part is too large and the part is unqualified.

[0050] After the spline of the part passes through the ring master gauge 2 and the mounting base 31 moves to the set stroke position, the second drive mechanism 6 drives the part to be measured to rotate in one direction to the initial position. During this process, one side tooth surface of the spline teeth of the part is kept in contact with one side tooth surface of the spline teeth of the ring master gauge 2, and it is convenient to control the rotation angle of the subsequent part at the initial position. Then, it rotates a set angle in the opposite direction. During this process, the part will first rotate relative to the ring master gauge 2 until the other side tooth surface of the spline teeth contacts the spline teeth of the ring master gauge 2. After that, during the continuous rotation of the part, under the cooperation of the spline of the part and the spline of the ring master gauge 2, the part drives the ring master gauge 2 to rotate a certain angle relative to the connecting seat 32. Due to the fitting clearance between the spline of the part and the spline of the ring master gauge 2, there is a difference between the set rotation angle of the part and the angle that the ring master gauge 2 rotates when the part rotates this set angle. For parts with qualified spline dimensions, the difference between the set rotation angle of the part and the angle that it drives the ring master gauge 2 to rotate is within a reasonable range. The second detection component 5 detects the angle that the ring master gauge 2 rotates relative to the connecting seat 32 during the process that the part rotates the set angle, and compares it with the set angle that the second drive mechanism 6 drives the part to rotate. If the difference is within the design range, it is judged that the spline of the part is qualified; otherwise, it is judged that the spline dimension of the part is too small and the part is unqualified, thus completing the detection of the spline of the part.

[0051] Based on the above description, a device can complete the detection of the size of the spline of the part, and can realize the automatic detection of the spline of the part. Moreover, when carrying out the automatic design of the part detection system, only one station needs to be set and one part transfer process needs to be carried out to complete the detection of the spline, so as to efficiently carry out the batch detection of parts.

[0052] Refer to Figures 2-3 As shown in the figure, specifically, the ring master gauge 2 is connected to the connecting seat 32 through the connecting ring 35. The connecting ring 35 is coaxially arranged with the ring master gauge 2. One end of the connecting ring 35 is fixed to the ring master gauge 2, and the other end is rotatably connected to the connecting seat 32 through a bearing. Correspondingly, through holes for installing the bearing are provided on the connecting seat 32 so that the part to be measured can pass through the connecting ring 35 and the through holes, thereby ensuring that the spline of the part to be measured passes through the ring master gauge 2.

[0053] Refer to Figures 2-3 As shown in the figure, the mounting base 31 is installed on the base 1 through the slide cylinder 7. The axis of the piston rod of the slide cylinder 7 is parallel to the axis of the ring master gauge 2. The slide cylinder 7 is used to realize the movable installation of the mounting base 31 on the base 1, and the slide cylinder 7 drives the mounting base 31 to move, so as to realize the automatic control of the movement of the mounting base 31 and the precise control of the movement stroke.

[0054] Refer to Figures 2-3As shown, the connecting seat 32 is installed on the mounting seat 31 through the cooperation of a guide rail and a 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 installed 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 arranged at an interval 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.

[0055] For parts with normal spline dimensions, when the spline of the part to be measured does not pass through the ring gauge 2 and the end face of the part spline abuts against the end face of the ring gauge 2, causing the connecting seat 32 to move relative to the mounting seat 31, the elastic member 33 undergoes elastic deformation. Then, after the spline of the part passes through the ring gauge 2, the connecting seat 32 can be reset to the initial position under the elastic force of the elastic member 33. 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 spline of the part passes through the ring gauge 2, and when the mounting seat 31 reaches the set stroke position, it can judge whether the spline dimension of the part is too large according to the detection result of the first detection component at this time, ensuring the accuracy of the detection result. And after completing the detection of one part, the elastic member 33 restores the relative position between the connecting seat 32 and the mounting seat 31 to the initial state for the detection of the next part.

[0056] Refer to Figures 2-3 As shown, the first detection component includes a laser displacement sensor 4 connected to the mounting seat 31. 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 plane 321 perpendicular to the axis of the ring gauge 2 is arranged on the side of the connecting seat 32 close to the support seat 34. The laser displacement sensor 4 detects the distance between it and the reference plane 321. Thus, it is judged whether there is relative movement between the connecting seat 32 and the mounting seat 31 according to the detection data of the laser displacement sensor 4.

[0057] Refer to Figures 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 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 transmission structure 52 drives the rotating shaft of the encoder 51 to rotate. Specifically, the transmission structure 52 can adopt a gear transmission or a belt and pulley transmission, etc., to achieve the purpose of transmitting the rotation torque of the ring gauge 2 to the rotating shaft of the encoder 51. And the rotation angle of the ring gauge 2 is detected by the encoder 51, and the detection result has high accuracy, so as to more accurately calculate the difference between the rotation angle of the encoder 51 and the rotation angle of the part to be measured, and more accurately judge the spline accuracy of the part to be measured.

[0058] Furthermore, when the ring gauge 2 rotates relative to the connecting seat 32, the angle by which the transmission structure 52 drives the rotating shaft of the encoder 51 to rotate is set to be greater than the angle by which the ring gauge 2 rotates relative to the connecting seat 32, that is, the transmission structure 52 amplifies the rotation angle of the ring gauge 2 and inputs it to the rotating shaft of the encoder 51. Refer to Figures 2-3 As shown, in this embodiment, the transmission structure 52 is schematically shown 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 to the ring gauge 2. The driven gear 522 is coaxially fixed to the rotating shaft of the encoder 51 and meshes with the driving gear 521. 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 rotation angles of the ring gauge 2 and the part is amplified to improve the detection accuracy. And through the gear transmission, the error in the transmission process is small, improving the accuracy of the detection result of the rotation angle of the ring gauge 2.

[0059] Refer to Figure 2 and Figure 4 As shown, the second driving mechanism 6 includes a motor 61 and a clamping jaw 62. The motor 61 is connected to the base 1 and the output shaft is coaxial with the ring gauge 2. The clamping jaw 62 is connected to the output shaft of the motor 61. The clamping jaw 62 is used to clamp the measured part coaxial with the ring gauge 2, and is adapted to clamp the measured part through the clamping jaw 62 and drive the clamping jaw 62 to rotate through the motor 61 to drive the measured part to rotate around its own axis. Specifically, the clamping jaw 62 adopts an electric centering clamping jaw 62, which can stably clamp the part and keep the part in a state coaxial with the ring gauge 2.

[0060] Refer to Figure 4 As shown, to achieve the purpose of driving the part to rotate a set angle by the second driving mechanism 6, the second driving mechanism 6 further 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. A trigger 64 for triggering the proximity switch 63 is connected to the clamping jaw 62. Specifically, the proximity switch 63 is fixedly connected to the motor 61 through a fixing bracket, and the trigger 64 is rod-shaped and installed on the side wall of the clamping jaw 62.

[0061] During the process of the ring go - gauge 2 moving close to the part to be measured, the motor 61 starts to drive the jaw 62 to rotate in one direction, so that the part rotates in one direction to enable the spline of the part to pass through the ring go - gauge 2. When the mounting base 31 moves to the maximum stroke position and the spline of the part passes through the ring go - gauge 2, the laser displacement sensor 4 detects that there is no relative movement between the connecting seat 32 and the mounting base 31. The control system receives the signal and controls the motor 61 to reverse until the trigger 64 triggers the proximity switch 63 and then stops. That is, the jaw 62 and the part rotate to the initial position. Then the control system controls the motor 61 to rotate again until the proximity switch 63 is triggered again. At this time, the jaw 62 holds the part and rotates 360°, achieving the purpose of driving the part to rotate by a set angle through the second driving mechanism 6.

[0062] Refer to Figure 3 As shown, further, a locking structure 8 is provided between the connecting seat 32 and the ring go - gauge 2. The locking structure 8 is used to restrict the rotation of the ring go - gauge 2 relative to the connecting seat 32 or release this restriction. During the process of the ring go - gauge 2 moving close to the part to be measured and the part to be measured being driven to rotate, the rotation of the ring go - gauge 2 relative to the connecting seat 32 is restricted by the locking structure 8 to prevent the ring go - gauge 2 from rotating with the part to be measured during this process, ensuring that there is relative rotation between the part and the ring go - gauge 2 so that the spline of the part is aligned with the spline of the ring go - gauge 2, so that the spline of the part with a non - oversized spline size can smoothly pass through the ring go - gauge 2. And during the subsequent rotation of the ring go - gauge 2 driven by the part, the restriction of the locking structure 8 on the ring go - gauge 2 can be released so that the ring go - gauge 2 and the part can rotate smoothly.

[0063] Refer to Figure 3 As 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 go - gauge 2, the second friction member 82 is connected to the connecting seat 32 and can move axially relative to the connecting seat 32 along the ring go - gauge 2. The second friction plate can move to contact or disengage from the first friction plate. The locking drive member 83 connects the second friction member 82 and the connecting seat 32 and is used to drive the second friction member 82 to move relative to the connecting seat 32. Specifically, the first friction member 81 is annular and is coaxially and fixedly connected to the ring go - gauge 2, so that the second friction member 82 can contact the first friction member 81 at any position where the ring go - gauge 2 rotates; the locking drive member 83 can be a cylinder, and more specifically an electric cylinder, to drive the second friction member 82 to contact or disengage from the first friction member 81 through the locking drive member 83. When in contact, the rotation of the ring go - gauge 2 relative to the connecting seat 32 is restricted by friction, and when not in contact, the ring go - gauge 2 can freely rotate relative to the connecting seat 32.

[0064] Refer to Figure 2 and Figures 5-6As shown, in actual design, for the convenience of automatic loading and unloading of the part to be measured, the ring plug gauge 2 is set with its axis vertical, and a support structure 9 for supporting the part to be measured is arranged on the base 1. The support structure 9 is arranged between the ring plug 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 plug gauge 2, and the two support plates 91 are arranged at intervals along the axial direction of the ring plug gauge 2. Two support rollers 92 are arranged at the top of one of the support plates 91 to support the part to be measured, and an arc-shaped groove 911 adapted to the cylindrical section at one end of the part to be measured is formed at the top of the other support plate 91, so as to support the part through the cooperation of the two support plates 91 and the two support rollers 92, and keep the part coaxial with the ring plug gauge 2 through the two support rollers 92 and the arc-shaped groove 911. In this way, the part to be measured can be placed on the support structure 9 or taken off from the support structure 9 in the vertical direction by an external loading and unloading mechanism, so as to realize automatic loading and unloading, and further realize the automation of spline detection of the part.

[0065] The embodiment of the present application also provides a spline detection method, which is detected by using the spline detection device as described above.

[0066] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spline detection device, characterized in that, Including: Base (1); Ring gauge (2), which is connected to the base (1) through a 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 axially relative to the base (1) along the ring gauge (2). The connecting seat (32) is connected to the mounting seat (31) and can move axially relative to the mounting seat (31) along the ring gauge (2). The ring gauge (2) is connected to the connecting seat (32) and can rotate about its own axis relative to the connecting seat (32). The elastic member (33) is arranged between the connecting seat (32) and the mounting seat (31). When the connecting seat (32) moves axially relative to the mounting seat (31) along the ring gauge (2), it overcomes the elastic force of the elastic member (33); A first detection assembly, which is arranged between the connecting seat (32) and the mounting seat (31) and is used for detecting the relative movement between the connecting seat (32) and the mounting seat (31); A second detection assembly (5), which is arranged between the connecting seat (32) and the ring gauge (2) and is used for detecting the angle of rotation of the ring gauge (2) relative to the connecting seat (32). The second detection assembly (5) includes an encoder (51) and a transmission structure (52). The encoder (51) is connected to the connecting seat (32) and the axis of its 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), it drives the rotating shaft of the encoder (51) to rotate through the transmission structure (52); A second driving mechanism (6), which is connected to the base (1) and is arranged at an interval from the ring gauge (2) in the axial direction of the ring gauge (2). The second driving mechanism (6) is used for connecting to a measured part located between the second driving mechanism (6) and the ring gauge (2) and coaxial with the ring gauge (2), and is used for restricting the axial movement of the measured part and driving the measured part to rotate about its own axis; Wherein, after the spline of the measured part passes through the ring gauge (2) and the mounting seat (31) moves to the set stroke position, the measured part is driven by the second driving mechanism (6) to rotate in one direction to the initial position, and then rotate in the opposite direction by a set angle. The set angle is compared with the detection value of the second detection assembly (5) during the process of the part rotating the set angle to judge whether the spline size of the part is too small.

2. The spline detection device according to claim 1, characterized in that: When the ring gauge (2) rotates relative to the connecting seat (32), the angle by which the transmission structure (52) drives the rotating shaft of the encoder (51) to rotate is greater than the angle by which the ring gauge (2) rotates relative to the connecting seat (32).

3. The spline detection device according to claim 1, characterized in that: The first detection component includes a laser displacement sensor (4) connected to the mounting base (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).

4. The spline detection device according to claim 1, wherein: It further includes a locking structure (8), and the locking structure (8) is arranged between the connecting seat (32) and the ring gauge (2) for restricting the rotation of the ring gauge (2) relative to the connecting seat (32) or releasing this restriction.

5. The spline detection device according to claim 4, wherein The locking structure (8) includes: 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), and the second friction member (82) can move to contact or disengage from the first friction member (81); A locking driving member (83) connecting the connecting seat (32) and the second friction member (82) for driving the second friction member (82) to move relative to the connecting seat (32).

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

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

8. A spline detection method, characterized in that, The detection is carried out by using the spline detection device according to any one of claims 1-7.

Images