Detection device and control system used after spline shaft manufacturing and forming

By designing an automated spline shaft detection device, the slides and connecting rails in the detection chamber are used to realize the automatic conveying and detection of spline shafts, which solves the problem of low manual detection efficiency in the prior art, improves detection accuracy and efficiency, and reduces costs.

CN119594925APending Publication Date: 2025-03-11ZHANGQIU HAILI MACHINERY MFG CO LTD
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Patent Information

Application Number
CN202411647564.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-18
Publication Date
2025-03-11

AI Technical Summary

Technical Problem

In the prior art, the dimensional accuracy detection of spline shafts relies on manual operation, which is inefficient and costly.

Method used

A detection device including a detection chamber, a first slide, a second slide and a connecting rail is designed, and the spline shaft is transported from the to-test area to the discharge area through an automated conveying system, and a detection component is provided in the detection room to realize automated dimensional accuracy detection at both ends of the spline shaft.

Benefits of technology

The efficiency and accuracy of spline shaft detection is significantly improved, labor costs are reduced, and the reliability of detection results is improved through automated processes.

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Abstract

The invention relates to the technical field of machining detection, in particular to a detection device and a control system after spline shaft manufacturing and forming, and the detection device comprises a machine body which is internally provided with a detection chamber; the detection assemblies are arranged in the detection chamber and two opposite inner walls of the machine body and are used for detecting spline parts at two ends of the spline shaft respectively; the first slide way corresponds to one detection assembly and is used for conveying the spline shaft; the second slide way is parallel to the first slide way, corresponds to one detection assembly and is used for conveying the spline shaft; the connecting rail is connected with the first slide way and the second slide way and used for conveying the spline shaft between the first slide way and the second slide way; the to-be-detected area is arranged on the side, away from the second slide way, of the first slide way, and the connecting rail extends to the to-be-detected area; the discharging area is arranged on the side, away from the first sliding way, of the second sliding way, and the connecting rail extends to the discharging area. The spline shaft testing device has the effects of improving the spline shaft testing efficiency and reducing the labor cost in the measuring process.
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Description

Technical Field

[0001] The present application relates to the field of mechanical processing detection technology, and in particular to a detection device and a control system for a spline shaft after manufacturing and forming. Background Art

[0002] The spline shaft is a mechanical transmission component with a longitudinal keyway on its surface, which cooperates with the rotating part sleeved on the shaft to keep synchronous rotation to transmit torque. In the field of mechanical processing, the spline shaft is a key transmission component and its quality directly affects the performance and stability of the mechanical device. Therefore, the quality inspection of the spline shaft after forming is particularly important.

[0003] Generally, the processing technology of spline shaft includes rolling, milling, grinding, cold forging, cold rolling and other plastic deformation processing methods, with different production batches and precision requirements. Correspondingly, the main quality inspection item after production and molding is dimensional accuracy inspection. The existing method of dimensional accuracy inspection is manual inspection, relying on traditional percentage or thousandth inside diameter ruler, making the detection table of the inside diameter ruler abut against the end surface of the spline shaft, slowly rotating the spline shaft, observing the indication value of the inside diameter ruler, and completing the measurement of the dimensional accuracy of a single spline shaft by rotating one circle.

[0004] Reference Figure 1 A spline shaft includes tooth grooves at both ends, which are spline parts. The spline parts make the cross-sections of both ends of the spline shaft gear-shaped, which are stably meshed and connected with the rotating parts; the middle part of the spline shaft has no tooth grooves, which is the spline roller part; thus, the spline shaft is divided into the middle spline roller part and the spline parts at both ends.

[0005] Therefore, if the traditional manual measurement method is used, the measurement of a single spline shaft requires the measurement personnel to manually measure both ends, which results in low test efficiency. Summary of the invention

[0006] In order to improve the testing efficiency of the spline shaft and reduce the labor cost of the measurement process, the present invention provides a detection device and a control system for the spline shaft after manufacturing.

[0007] On the one hand, the present invention provides a detection device for a spline shaft after manufacturing and forming, which adopts the following technical solution: A detection device for a spline shaft after manufacturing and forming, comprising a body, a detection chamber is provided inside the body, and further comprising: A detection component is arranged in the detection chamber and on two opposite inner walls of the body, and is used for detecting the spline parts at both ends of the spline shaft; A first slideway, arranged corresponding to one of the detection components, for conveying the spline shaft; A second slideway, parallel to the first slideway, is arranged corresponding to one of the detection components and is used to transport the spline shaft; A connecting rail, connecting the first slideway and the second slideway, and used for conveying the spline shaft between the first slideway and the second slideway; An inspection area is arranged on a side of the first slideway away from the second slideway, and the connecting rail extends to the inspection area; A material unloading area is arranged on a side of the second slideway away from the first slideway, and the connecting rail extends to the material unloading area.

[0008] By adopting the above technical solution, the machine body is the main device for detecting the dimensional accuracy of the spline shaft, and the first slide, second slide, connecting rail and other components related to the detection size are all arranged in the detection room inside the machine body; the measurement personnel place the spline shaft to be detected in the inspection area of ​​the detection room, and the inspection area is transported to the first slide through the connecting rail. The detection component corresponding to the first slide detects the dimensional accuracy of one end of the spline shaft, and the first slide then transports the spline shaft to the second slide. The second slide transports the spline shaft to its corresponding detection component to detect the dimensional accuracy of the other end of the spline shaft. After the detection of both ends is completed, the second slide sends the spline shaft to the unloading area through the connecting rail, and the spline shaft that has been tested is sent out of the detection room; Specifically, in the above-mentioned single spline shaft inspection step, a sliding assembly docking with the first slideway should be set on the connecting rail of the inspection area, and the measurement personnel pick the spline shaft to be inspected from a batch of spline shafts and place it on the sliding assembly in the inspection area. After the inspection is completed on the inspection assembly in the first slideway, the spline shaft on the first slideway is transported to the second slideway through the connecting rail, and at the same time, the spline shaft in the inspection area slides onto the first slideway to complete the smooth docking of the spline shaft on the first slideway; Furthermore, while the spline shaft on the first slideway slides to the second slideway and the spline shaft in the inspection area slides to the first slideway, the spline shaft on the second slideway slides to the unloading area to complete the dimensional accuracy inspection of the spline shaft.

[0009] Optionally, a screw rod is rotatably connected in the first slideway and the second slideway, and a slider is passed through the screw rod; The sliding block is provided with a track adapted to the connecting rail.

[0010] By adopting the above technical solution, the sliding movement of the spline shaft in the first slideway and the second slideway is realized by rotating the screw rod and driving the slider; by utilizing the advantages of high stability and high precision of the screw rod transmission, the spline shaft detected by the first slideway and the second slideway can be stably and accurately docked with the connecting rail to complete the subsequent transportation; After the slider slides to the corresponding position along the first slideway and the second slideway, the first slideway, the second slideway, the inspection area and the unloading area form a straight line structure part through the connecting rail to realize the displacement of the spline shaft.

[0011] Optionally, the detection component includes: The detection plates are distributed in a circumferential direction and are slidably arranged. The detection plates slide radially to form a cylindrical structure with a regular polygonal cross section.

[0012] By adopting the above technical solution, the detection plates slide towards each other and radially until the center of the detection plate surface abuts against the spline part of the spline shaft to make point contact, and the inner diameter of the spline shaft at the contact point is measured at the same time. Multiple detection plates detect the inner diameters of the spline shafts at multiple contact points at the same time, and the average value is calculated; The principle on which the above scheme can be implemented lies in the continuity of the actual structure of the spline shaft. When the spline shaft is produced, it is observed by the production staff with their eyes, and a batch of obviously unqualified products are eliminated in advance. Therefore, this scheme is suitable for dimensional measurement with a higher precision that cannot be distinguished by the naked eye. In fact, spline shafts with obvious cross-sections have been eliminated by production staff. Since the surface structure of the spline shaft is continuous, the detection device of this scheme does not need to detect the entire spline shaft surface when detecting the size of the spline part. It only needs to set a few detection points and take the average value.

[0013] Optionally, the detection component further includes: A plurality of detection needles are distributed circumferentially and are slidably disposed between two adjacent detection plates, and the number of the detection needles is equal to the number of the detection plates.

[0014] By adopting the above technical solution, the detection of the detection needle can expand the number of size detection points of the spline shaft, making the detection result more accurate; the detection needle and the detection plate operate in sequence, and the detection needle is set between two adjacent detection plates, that is, at the corner of the regular polygon formed by the detection plates. When the detection plate measurement is completed, the detection needle is moved in opposite and radial directions for measurement; It should be noted that the detection plate has a limiting effect compared to the detection needle. When the detection plate slides toward each other radially, multiple surfaces abut the spline shaft at the same time. The limitation of the plate-like structure can calibrate the position of the spline shaft and improve accuracy.

[0015] On the other hand, the present invention provides a control system for a detection device after the spline shaft is manufactured and formed, which adopts the following technical solution: A control system for a detection device after manufacturing and forming a spline shaft, characterized by comprising a central control module, a dimension measurement module, a slip control module, and a display module; The size detection module detects the inner diameter dimension value of the spline shaft and uploads the data to the central control module; the detection end of the size detection module is integrated with the detection plate surface and the end of the detection needle, and the size detection module collects the inner diameter dimension data of the spline shaft as the detection plate and the detection needle slide; The central control module receives the data from the size detection module, calculates, fits and stores the data, and sends the calculation and fitting results to the display module; the central control module generates a control instruction and transmits the instruction to the sliding control module; The display module displays the detection value of the size detection module and the calculation result of the central control module; The sliding control module is connected to the central control module, receives instructions from the central control module, controls the operation of the first slideway and the second slideway, and transports the spline shaft.

[0016] By adopting the above technical solution, the central control module needs to have data calculation, file execution and storage functions, and a small integrated computer usually equipped with a machine tool can be selected; after the detection module completes the detection, the display module displays the detection data, and displays each set of detected data; it should be noted that the central control module stores data pre-written by technicians, corresponding to each detection board and each detection needle number, such as "left one", "right two", etc., which is convenient for technicians to understand the specific location of the measurement data; the display module also displays the calculation results of the central control module, that is, it intuitively displays whether the spline shaft being detected is qualified; Therefore, in the above-mentioned dimensional accuracy measurement process, the spline shaft slides into the detection assembly corresponding to the first slideway, and the display module displays the dimensional accuracy detection result of one end of the spline shaft. After the spline shaft slides from the first slideway to the second slideway to complete the detection, the display module displays the dimensional accuracy detection result of the other end of the spline shaft, and also displays whether the spline shaft is qualified. In practical applications, the display component can generally be selected as a human-computer interaction display screen.

[0017] Optionally, a measurement control module is also included; The measurement control module is connected to the central control module, and the control end of the measurement control module is connected to the detection plate and the detection needle to control the sliding of the detection plate and the detection needle.

[0018] By adopting the above technical solution, the difference between the measurement control module and the sliding control module is that the measurement control module is used to control the operation of detection-related components such as detection plates and detection needles, and separates the control modules of conveying-related and measurement-related components to facilitate independent operation by users.

[0019] Optionally, an input module is also included; The input module is connected to the central control module, and provides a way for the control personnel to input instructions, and sends the instructions to the central control module, overwriting the original instructions of the central control module.

[0020] By adopting the above technical solution, the input module is used for the measurement personnel to control the above-mentioned conveying-related and measurement-related components, that is, the measurement personnel input instructions through the input module to overwrite the native instructions generated by the central control module, and the central control module immediately sends the input instructions to the sliding control module and the measurement control module; That is, the measurement personnel can manually pause the operation of the detection device or adjust the spline shaft conveying cycle and conveying interval through the input module, speed up or slow down the conveying speed of the spline shaft, or adjust the slip amount of the detection plate and detection needle to adapt to spline shafts of different sizes and diameters.

[0021] Optionally, a wireless module is also included; The wireless module is connected to the central control module, the measurement control module, the slip control module, and the dimension measurement module, and wirelessly transmits the measurement data of the dimension measurement module and the related instructions of the central control module.

[0022] By adopting the above technical solution, the wireless module is used for real-time data transmission inside a limited space, replacing the wired transmission method, thus saving the use space.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up the detection components, the first slideway, the second slideway and the connecting rail, not only the automatic transportation of the spline shaft from the inspection area to the unloading area is realized, but also the effective detection of the spline parts at both ends of the spline shaft is ensured, which significantly improves the detection efficiency and accuracy; 2. The detection assembly is composed of a plurality of sliding detection plates and a plurality of sliding detection needles. The sliding combination of the detection plates and the detection needles can meet the detection requirements of spline shafts of various specifications, thereby increasing the flexibility and application range of the device; 3. The control system integrates multiple functional modules such as the central control module and the dimension measurement module, realizing high-precision measurement of the inner diameter of the spline shaft, and accurately controlling the operation of the slideway through the slip control module, thereby improving the degree of automation of the detection process and ensuring the high reliability of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the background technology of this application.

[0025] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 3 It is a structural schematic diagram designed to highlight the connecting rail in the embodiment of the present application.

[0027] Figure 4 It is a structural diagram for highlighting the detection component in the embodiment of the present application.

[0028] Figure 5 It is a logic block diagram of the control system of an embodiment of the present application.

[0029] Explanation of the accompanying drawings: 1. Spline shaft; 11. Spline part; 2. Machine body; 21. Detection chamber; 22. First slide; 23. Second slide; 24. Slider; 25. Clamp; 26. Connecting rail; 3. Detection assembly; 31. Detection plate; 32. Detection needle; 4. Central control module; 41. Display module; 5. Dimension detection module; 6. Wireless module; 7. Input module; 8. Slide control module; 9. Measurement control module. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-5 This application is described in further detail.

[0031] The present application embodiment discloses a detection device for a spline shaft after manufacturing and forming. Figure 1 A detection device for a spline shaft after manufacturing and forming includes a body 2, a detection chamber 21 is opened inside the body 2, and detection-related structural components are arranged in the detection chamber 21. The detection personnel place the spline shaft 1 in the detection chamber 21 to detect the dimensional accuracy.

[0032] Reference Figure 1 Two slideways are arranged in parallel on the bottom wall of the detection chamber 21, namely the first slideway 22 and the second slideway 23. The opposite ends of the first slideway 22 and the second slideway 23 extend to the inner walls of the two opposite sides of the detection chamber 21 respectively; the first slideway 22 and the second slideway 23 are rotatably connected with a screw rod, and a slider 24 is penetrated and threadedly connected on the screw rod. The slider 24 is driven to slide along the first slideway 22 and the second slideway 23 by the rotation of the screw rod, and the top side surface of the slider 24 is flush with the bottom surface of the detection chamber 21; in this embodiment, the length of the first slideway 22 and the second slideway 23 is greater than half of the distance between the two opposite sides of the detection chamber 21, so that the two sliders 24 can be slidably distributed on a straight line perpendicular to the first slideway 22 and the second slideway 23.

[0033] Reference Figure 1, a waiting area is arranged on the bottom wall of the detection chamber 21 at the side of the first slide 22 away from the second slide 23, and a material unloading area is arranged on the side of the second slide 23 away from the first slide 22, and the connecting line of the central part of the waiting area and the material unloading area is perpendicular to the first slide 22 and the second slide 23. A connecting rail 26 is arranged inside the detection chamber 21, and the connecting rail 26 is perpendicular to the first slide 22 and the second slide 23. Both ends of the connecting rail 26 extend to the two opposite side edges of the detection chamber 21. The connecting rail 26 is divided into multiple sections, and the multiple sections of the connecting rail 26 are respectively arranged in the waiting area, the slider 24 of the first slide 22, the slider 24 of the second slide 23, the material unloading area, and the bottom wall of the detection chamber 21 between the waiting area, the first slide 22, the second slide 23, and the material unloading area. When the sliders 24 of the first slide 22 and the second slide 23 slide to the corresponding positions, the connecting rail 26 forms a straight track laid on the bottom wall of the detection chamber 21.

[0034] Reference Figure 1 The inspection area, the first slideway 22, the first slideway 22 and the second slideway 23, and the second slideway 23 and the unloading area are all slidably connected with a clamping jaw 25, which is used to clamp the spline shaft 1. The spline shaft 1 is clamped by the clamping jaw 25 and remains parallel to the first slideway 22 in the inspection chamber 21. In practical applications, the connecting rail 26 can extend outside the inspection chamber 21, and the two ends are connected outside the inspection chamber 21 or outside the machine tool to form a conveying cycle. The clamping jaw 25 sliding out of the unloading area can be circulated and transported to the inspection area through the connecting rail 26. In this embodiment, the clamping jaw 25 is an electric clamping jaw 25.

[0035] Reference Figure 1 and Figure 2 , detection components 3 are arranged on the opposite inner walls of the two vertical sides of the detection chamber 21, and the two detection components 3 correspond to the first slideway 22 and the second slideway 23 respectively, that is, the spline shaft 1 slides to the detection component 3 through the first slideway 22 and the second slideway 23 for the dimensional accuracy detection of the spline shaft 1. The two detection components 3 have the same composition structure and are arranged on the opposite side walls of the detection chamber 21, so that the spline shaft 1 can be transported to the two detection components 3 in sequence without turning during the transportation process of the detection chamber 21, and the dimensional accuracy of the spline parts 11 at both ends of the spline shaft 1 is detected. Take one of the detection components 3 as an example for explanation.

[0036] Reference Figure 2The detection assembly 3 includes a plurality of detection plates 31 and a plurality of detection needles 32, and the number of the detection plates 31 is equal to the number of the detection needles 32. The number of the detection plates 31 is an even number, and the plurality of detection plates 31 are circumferentially evenly spaced to form a regular polygonal cylindrical structure. The figure shows a regular hexagonal cylindrical structure, but the actual application is not limited thereto. The plate surfaces of the plurality of detection plates 31 are perpendicular to the radial direction of the regular polygon, and the plate bodies are arranged to slide along the radial direction of the regular polygon. In this embodiment, the sliding of the detection plates 31 is achieved by driving the cylinder. An inner diameter detection sensor is provided at the central part of the plate surface of the detection plate 31, which is used to abut and measure the inner diameter of the spline shaft 1. The middle parts of the multiple detection plates 31 are aligned with the first slide 22 and the second slide 23. The jaws 25 of the first slide 22 and the second slide 23 clamp the spline shaft 1 and convey the spline shaft 1 to the part where the spline portion 11 at one end thereof extends to the center of the multiple detection plates 31. The driving cylinder drives the detection plates 31 to slide radially toward each other until the plate surface of the detection plate 31 abuts the surface of the spline shaft 1. Due to the positive polygonal distribution, the abutment points between the plate surfaces of the multiple detection plates 31 and the surface of the spline shaft 1 are circumferentially evenly distributed, and the inner diameter accuracy of the spline portion 11 of the spline shaft 1 is evenly collected.

[0037] Reference Figure 2 The detection needles 32 and the detection plates 31 are distributed alternately, and the detection needles 32 are distributed in the middle part between two adjacent detection plates 31, or in other words, the detection needles 32 are distributed at the corners of the positive polygonal distribution of the detection plates 31. The length direction of the detection needles 32 is parallel to the distribution radial direction of the multiple detection plates 31. In this embodiment, the detection needles 32 are arranged to slide along their length direction, and the sliding is achieved by a micro-electric push rod, that is, a micro-electric push rod is correspondingly installed on the inner wall of the detection chamber 21.

[0038] The implementation principle of the inspection device for a spline shaft after manufacturing and forming in an embodiment of the present application is as follows: the measurement personnel places the spline shaft 1 to be inspected on the clamp 25 in the inspection area of ​​the inspection chamber 21. After the inspection component 3 corresponding to the first slide 22 completes the dimensional accuracy inspection of one end of the spline shaft 1, the first slide 22 transports the spline shaft 1 to the second slide 23, while the clamp 25 slides toward the first slide 22 through the connecting rail 26 to transport the spline shaft 1; at the same time, the second slide 23 transports the spline shaft 1 after inspection to the unloading area, and sends the spline shaft 1 after inspection out of the inspection chamber 21.

[0039] In fact, the spline shaft 1 with obvious cross-section has been eliminated by production personnel. Since the surface structure of the spline shaft 1 is continuous, the detection device of this scheme does not need to detect the entire surface of the spline shaft 1 when detecting the size of the spline part 11. It only needs to set a few detection points and take the average value. The detection of the detection needle 32 can expand the number of size detection points of the spline shaft 1, making the detection result more accurate.

[0040] Based on the above-mentioned detection device for a spline shaft after manufacturing and forming, this embodiment discloses a control system for the detection device for a spline shaft after manufacturing and forming, which is used for controlling the sliding member and the detection component 3 in the above-mentioned detection device. Figure 3 A control system for a detection device after spline shaft manufacturing and forming includes a central control module 4, a size detection module 5, a slip control module 8, a measurement control module 9, an input module 7, a display module 41, and a wireless module 6.

[0041] The wireless module 6 is used for data transmission and command transmission between the above-mentioned size detection module 5, the sliding control module 8, and the central control module 4. In this embodiment, the wireless module 6 preferably adopts the Zigbee wireless transmission module with low price, low energy consumption and high speed to realize data and command transmission within a short distance and limited space.

[0042] The size detection module 5 is connected to the central control module 4 through the wireless module 6. The detection end of the size detection module 5 is integrated into the inside of the detection plate 31 and the end of the detection needle 32 in the form of an inner diameter detection sensor. As the detection plate 31 and the detection needle 32 slide, the detection end of the inner diameter detection sensor abuts against the spline shaft 1. The size detection module 5 collects the inner diameter size data of the spline shaft 1 and transmits the data wirelessly to the central control module 4.

[0043] The central control module 4 receives the data from the size detection module 5, calculates, fits, and stores the data, and sends the calculation and fitting results to the display module 41. At the same time, the central control module 4 generates control instructions and transmits instructions to the slip control module 8 and the measurement control module 9. That is, the central control module 4 can suspend the operation of the slip control module 8 according to the abnormal detection value of the spline shaft 1, and then suspend the subsequent slip conveying and size measurement of the spline shaft 1 until the spline shaft 1 that fails the inspection is removed. In fact, in order to further improve the inspection efficiency of the spline shaft 1, a common marking method is generally used to mark the abnormal spline shaft 1, and the staff can take out the abnormal spline shaft 1 after the conveying from the unloading area is completed.

[0044] The sliding control module 8 is connected to the central control module 4, receives the instruction of the central control module 4, controls the motors corresponding to the first slideway 22 and the second slideway 23, controls the sliding of the clamping claw 25, and orderly completes the conveying of the spline shaft 1. The measuring control module 9 is connected to the central control module 4, and the control end of the measuring control module 9 is connected to the detection board 31 and the detection needle 32 to control the sliding of the detection board 31 and the detection needle 32.

[0045] The input module 7 is connected to the central control module 4. The input module 7 provides a way for the control personnel to input commands, sends the commands to the central control module 4, covers the original commands of the central control module 4, and provides a way for manual control of the detection process.

[0046] The display module 41 displays the detection value of the size detection module 5 and the calculation result of the central control module 4, and at the same time issues a prompt to the inspection personnel for the spline shaft 1 that fails the inspection.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A detection device for a spline shaft after manufacturing, comprising a body (2), wherein a detection chamber (21) is provided inside the body (2), characterized in that: Also includes: A detection component (3) is arranged in the detection chamber (21) and on two opposite inner walls of the machine body (2), and the detection components (3) on the two opposite inner walls of the machine body (2) are respectively used to detect the spline parts (11) at both ends of the spline shaft (1); A first slideway (22), arranged corresponding to one of the detection components (3), and used for conveying the spline shaft (1); A second slideway (23), parallel to the first slideway (22), arranged corresponding to one of the detection components (3), and used for conveying the spline shaft (1); A connecting rail (26) connecting the first slideway (22) and the second slideway (23) and used for transporting the spline shaft (1) between the first slideway (22) and the second slideway (23); An inspection area is arranged on a side of the first slideway (22) away from the second slideway (23), and the connecting rail (26) extends to the inspection area; A material unloading area is arranged on a side of the second slideway (23) away from the first slideway (22), and the connecting rail (26) extends to the material unloading area.

2. A detection device for a spline shaft after manufacturing and forming according to claim 1, characterized in that: The first slideway (22) and the second slideway (23) are both rotatably connected with a screw rod, and a slider (24) is passed through the screw rod; The sliding block (24) is provided with a track adapted to the connecting rail (26).

3. The detection device for a spline shaft after manufacturing and forming according to claim 1, characterized in that: The detection component (3) comprises: The detection plates (31) are distributed in a circumferential direction and are slidably arranged. The detection plates (31) slide radially to form a cylindrical structure with a regular polygonal cross section.

4. A detection device for a spline shaft after manufacturing and forming according to claim 3, characterized in that: The detection component (3) further comprises: A plurality of detection needles (32) are distributed in the circumferential direction and are slidably disposed between two adjacent detection plates (31), and the number of the detection needles (32) is equal to the number of the detection plates (31).

5. A control system applied to a detection device after manufacturing and forming a spline shaft as claimed in claim 4, characterized in that: It comprises a central control module (4), a size detection module (5), a sliding control module (8), and a display module (41); The size detection module (5) detects the inner diameter value of the spline shaft (1) and uploads the data to the central control module (4); the detection end of the size detection module (5) is integrated with the surface of the detection plate (31) and the end of the detection needle (32), and slides with the detection plate (31) and the detection needle (32); The central control module (4) receives data from the size detection module (5), calculates, fits, and stores the data, and sends the calculation and fitting results to the display module (41); the central control module (4) generates a control instruction and transmits the instruction to the sliding control module (8); The display module (41) displays the detection value of the size detection module (5) and the calculation result of the central control module (4); The sliding control module (8) is connected to the central control module (4), receives instructions from the central control module (4), controls the operation of the first slideway (22) and the second slideway (23), and transports the spline shaft (1).

6. The control system of the detection device after the spline shaft is manufactured and formed according to claim 5, characterized in that: Also includes a measurement control module (9); The measurement control module (9) is connected to the central control module (4), and a control end of the measurement control module (9) is connected to the detection plate (31) and the detection needle (32) to control the sliding of the detection plate (31) and the detection needle (32).

7. The control system of the detection device after the spline shaft is manufactured and formed according to claim 6, characterized in that: Also includes an input module (7); The input module (7) is connected to the central control module (4), and the input module (7) provides a way for the control personnel to input instructions, and sends the instructions to the central control module (4), overwriting the original instructions of the central control module (4).

8. The control system of the detection device after the spline shaft is manufactured and formed according to claim 7, characterized in that: Also includes a wireless module (6); The wireless module (6) is connected to the central control module (4), the measurement control module (9), the sliding control module (8), and the dimension measurement module, and wirelessly transmits measurement data of the dimension measurement module and related instructions of the central control module (4).