Axial dimension detection device for shaft parts

Abstract

The present application relates to the technical fields of shaft parts machining, in particular, the present application provides a kind of shaft parts axial dimension detection device, by setting base, feeding cleaning assembly and clamping assembly, first clamping assembly cooperation feeding cleaning assembly is used, can satisfy wide-range adjustment clamping length, and by feeding cleaning assembly from the side of base is fed, it is convenient to operate, substantially improve applicability and feeding efficiency;And feeding cleaning assembly is divided into feeding mechanism and cleaning mechanism, after the shaft parts to be detected is sent into the inside of clamping assembly by feeding mechanism, it is automatically wrapped, realize from the middle of the shaft parts to be detected to two sides synchronous cleaning, in this way, improve the efficiency of cleaning the outside of the shaft parts to be detected, improve appearance detection efficiency;And, the switching mechanism in the inside of clamping assembly cooperation clamping piece is used, can be freely switched, select different clamping piece, to satisfy the fixation of the shaft parts of different end shapes.

Description

Technical Field

[0001] This invention relates to the field of shaft parts processing technology, and more specifically, to a device for detecting the axial dimensions of shaft parts. Background Technology

[0002] Parts require inspection before, during, and after processing to remove defective products and ensure that all parts leave the factory as qualified products. Inspection items include material composition analysis, appearance defect inspection, metallographic inspection, and dimensional measurement. The specific inspection items may vary slightly depending on the technical requirements of different types of parts. Material composition analysis and metallographic inspection are generally performed when raw materials arrive at the factory, and metallographic inspection is also performed after heat treatment during processing. Appearance defect inspection and dimensional inspection are conducted through random sampling during processing, and a full inspection is performed before the parts leave the factory after processing.

[0003] After machining, shaft parts require visual and dimensional inspection. Visual inspection includes checking for scratches, pitting, and dents. Dimensional inspection includes measuring the shaft diameter and determining if it meets design requirements. For threaded parts, it also involves checking for any missing threads and ensuring the thread pitch meets design specifications. Traditionally, these inspections are performed manually using conventional tools. Visual inspection is done by eye, diameter is measured with a micrometer, and threads are checked with a thread gauge. Manual inspection is not only time-consuming and labor-intensive, but also prone to errors and omissions.

[0004] To improve the accuracy of inspection, machines are gradually replacing manual inspection. However, current shaft parts inspection machines are prone to problems with loading long shaft parts. Also, for longer shaft parts, the cleaning operation is less efficient during appearance inspection, and loading and appearance cleaning cannot be performed simultaneously.

[0005] To this end, we disclose an axial dimension detection device for shaft-type parts that can significantly improve the detection efficiency of long shaft-type parts. Summary of the Invention

[0006] The purpose of this invention is to provide an axial dimension detection device for shaft-type parts to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an axial dimension detection device for shaft parts, comprising a base, on which a feeding and cleaning assembly and a clamping assembly are respectively arranged on opposite sides of the base. The feeding and cleaning assembly is used to feed the shaft parts to be inspected into the clamping assembly and to perform surface cleaning on the outside of the shaft parts to be inspected. The clamping assembly is used to receive and clamp the shaft parts to be inspected fed in by the feeding and cleaning assembly, and to inspect the axial dimensions of the shaft parts.

[0008] A further technical solution of this application: The clamping assembly specifically includes a mounting groove set on one side of the base and a second motor placed inside one end of the mounting groove. The power output shaft of the second motor is connected to one end of a fourth screw, and the other end of the fourth screw is connected to a third screw. Two clamping sleeves are symmetrically connected to the outer sides of the fourth screw and the third screw. A switching mechanism is connected to a single clamping sleeve through a stabilizing rod. A switching component is also connected to the switching mechanism. The switching component has a cross structure, and a clamping component is inserted into any end of the switching component. A length detection device is provided on the clamping component.

[0009] A further technical solution of this application: The switching mechanism includes a movable seat connected to the outside of the stabilizing rod, a plug-in cavity disposed inside the movable seat, and an inner ring cavity opened on the inner ring surface of the plug-in cavity. One end of a rotating column is inserted into the plug-in cavity. A sleeve is disposed on the outer ring surface of the rotating column corresponding to the position of the inner ring cavity. One end of the sleeve column is connected to the bottom of the sleeve through a retaining spring. Several pin holes are opened around the inside of the inner ring cavity, and the other end of the sleeve column is switched in several pin holes. An actuating lever is also connected to the outside of the rotating column between the switching element and the moving seat. The position of the actuating lever is perpendicular to the switching element. The fourth screw and the third screw have the same length, and their outer threads are in opposite directions.

[0010] A further technical solution of this application: the feeding and cleaning assembly specifically includes a feeding mechanism placed on the other side of the base, and a cleaning mechanism connected to the feeding mechanism; The feeding mechanism specifically includes a feeding cylinder installed on the other side of the base and a telescopic part connected to the movable end of the feeding cylinder. The cleaning mechanism is connected above the telescopic part. Guide inclined blocks are provided at both ends of the other side of the base. The guide inclined blocks are provided with a slope that faces the clamping component and is inclined from top to bottom. A bonding block is attached to the slope and is connected to both sides of the cleaning structure. Furthermore, when the moving end of the feeding cylinder pushes the telescopic part to move the cleaning mechanism, the telescopic part pulls the cleaning mechanism back to move along the slope, sending the cleaning mechanism and the shaft parts to be inspected into the clamping assembly.

[0011] A further technical solution of this application: The telescopic part specifically includes a sliding seat connected to the movable end of the feeding cylinder, a shrinking cylinder installed on the upper end of the sliding part, and a shrinking spring installed inside the telescopic cylinder. The top end of the shrinking spring is connected to one end of the shrinking column, and the other end of the shrinking column is connected to the bottom of the cleaning mechanism.

[0012] A further technical solution of this application: The cleaning mechanism specifically includes a cleaning frame connected to the upper end of the telescopic part and a first motor set at one end of the cleaning frame. The power output shaft of the first motor extends into the interior of the cleaning frame and is connected to one end of a first screw. The other end of the first screw is connected to one end of a second screw. Cleaning screw sleeves are symmetrically arranged on the outer sides of the first screw and the second screw. A feeding seat is connected to a single cleaning screw sleeve. One end of an extension rod is connected to the side of the feeding seat. The other end of the extension rod is connected to a feeding lap ring. The feeding lap ring is used to carry the shaft parts to be inspected. Furthermore, the first screw and the second screw are of the same length, and their outer threads are in opposite directions.

[0013] A further technical solution of this application: A squeezing chamber is provided inside the feeding ring, and an opening is provided on the inner side of the upper end of the feeding ring. A rotating shaft is provided at the upper end of the feeding ring, and one end of the squeezing arc plate is connected to the outer side of the rotating shaft. Inside the extrusion chamber, at the opening, there is also a pressure-bearing arc plate. The pressure-bearing arc plate is located below the extrusion arc plate. One end of the pressure-bearing arc plate away from the extrusion arc plate is connected to one end of a retaining spring. The other end of the retaining spring is connected to one end of a surrounding arc plate. When the extrusion arc plate extrudes the pressure-bearing arc plate, the surrounding arc plate is squeezed out of the extrusion chamber by the retaining spring and wraps around the outside of the shaft part to be tested. One end of the pressure arc plate near the extrusion arc plate is connected to one end of a return spring, and the other end of the return spring is connected to the inside of the extrusion chamber.

[0014] A further technical solution of this application: the pressure arc plate is provided with several rolling columns located below the extrusion arc plate.

[0015] A further technical solution of this application: flexible cleaning components are provided on the inner sides of both the feeding ring and the surrounding arc plate.

[0016] Compared with the prior art, the technical solution provided by this invention has the following advantages: This invention, by setting up a base, a feeding and cleaning component, and a clamping component, allows for a wide range of adjustable clamping lengths. The feeding and cleaning component loads the part from the side of the base, making operation convenient and significantly improving applicability and loading efficiency. Furthermore, the feeding and cleaning component consists of a feeding mechanism and a cleaning mechanism. After the feeding mechanism feeds the shaft part to be inspected into the clamping component, the cleaning mechanism automatically wraps it, achieving simultaneous cleaning from the center of the shaft part to both sides. This improves the efficiency of cleaning the outer side of the shaft part and enhances the efficiency of visual inspection. Additionally, the switching mechanism inside the clamping component, used in conjunction with the clamping elements, allows for free switching, enabling the selection of different clamping elements to fix shaft parts with different end shapes, further improving applicability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a cross-sectional view of the cleaning mechanism of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A; Figure 5 This is a cross-sectional view of the switching mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a cross-sectional view of the internal structure of the cleaning rack of the present invention; Figure 8 For the present invention Figure 7 A magnified structural diagram at point C.

[0018] Explanation of the labels in the diagram: 1. Base; 2. Feeding and cleaning assembly; 3. Feeding mechanism; 4. Cleaning mechanism; 5. Clamping assembly; 6. Feeding cylinder; 7. Guide block; 8. Adhesive block; 9. Telescopic part; 10. Cleaning screw sleeve; 11. First screw; 12. Cleaning frame; 13. First motor; 14. Feeding seat; 15. Second screw; 16. Sliding seat; 17. Retraction cylinder; 18. Retraction spring; 19. Retraction column; 20. Extension rod; 21. Feeding lap ring; 22. Clamping component; 3. Switching component; 24. Rotating column; 25. Moving seat; 26. Inner ring cavity; 27. Pin hole; 28. Sleeve; 29. ​​Sleeve column; 30. Clamping screw sleeve; 31. Pressing spring; 32. Third screw; 33. Stabilizing rod; 34. Mounting groove; 35. Extrusion chamber; 36. Pull-back spring; 37. Rotating shaft; 38. Extrusion arc plate; 39. Surrounding arc plate; 40. Pressurized arc plate; 41. Abutment spring; 42. Rolling column; 43. Fourth screw; 44. Second motor. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The present invention will be further described below with reference to the embodiments.

[0020] Please see Figures 1 to 8In one embodiment of this application, an axial dimension detection device for shaft parts includes a base 1, on which a feeding and cleaning assembly 2 and a clamping assembly 5 are respectively arranged on opposite sides. The feeding and cleaning assembly 2 is used to feed the shaft parts to be inspected into the clamping assembly 5 and to perform surface cleaning on the outside of the shaft parts to be inspected. The clamping assembly 5 is used to receive and clamp the shaft parts to be inspected fed in by the feeding and cleaning assembly 2, and to inspect the axial dimensions of the shaft parts.

[0021] Furthermore, the clamping assembly 5 specifically includes a mounting groove 34 disposed on one side of the base 1 and a second motor 44 disposed at one end inside the mounting groove 34. The power output shaft of the second motor 44 is connected to one end of a fourth screw 43, and the other end of the fourth screw 43 is connected to a third screw 32. Two clamping sleeves 30 are symmetrically connected to the outer sides of the fourth screw 43 and the third screw 32. A switching mechanism is connected to a single clamping sleeve 30 through a stabilizing rod 33. A switching component 23 is also connected to the switching mechanism. The switching component 23 has a cross structure, and a clamping component 22 is inserted into any end of the switching component 23. A length detection device is provided on the clamping component 22.

[0022] This embodiment is implemented as follows: In use, the shaft part to be tested needs to be placed on the feeding and cleaning assembly 2, and the feeding and cleaning assembly 2 feeds the shaft part to be tested into the clamping assembly 5. Before this, the clamping assembly 5 needs to be adjusted. It should be noted that this adjustment is only an initial adjustment and is not a one-step adjustment of the clamping length of the clamping assembly 5. It is also necessary to ensure that the clamping length of the clamping assembly 5 is slightly greater than the length of the shaft part to be tested. The purpose is to ensure that the clamping and fixing operation can be performed in advance. Subsequently, the feeding and cleaning assembly 2 feeds the shaft parts to be inspected into the clamping assembly 5, where they are fixed. At this time, the shaft parts to be inspected are in a fixed state. Then, the cleaning feed moves from the middle of the shaft parts to both sides for cleaning, which improves the cleaning efficiency and the inspection efficiency.

[0023] During the cleaning process, the length detection device installed on the clamping part 22 can detect the length of shaft parts. For the length detection device, measuring devices such as infrared rangefinders can be used. Only devices that meet the requirements for length measurement are needed, so we will not go into too much detail here.

[0024] The step of adapting the clamping assembly 5 involves not only adjusting the clamping length of the clamping assembly 5, but also rotating the switching component 23 above the switching structure to select different clamping components 22 to fix shaft parts. This improves the applicability of the clamping. At the same time, different clamping components 22 can be inserted into the switching component 23, thus improving the selection of clamping specifications and greatly increasing applicability.

[0025] Please see Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As a preferred embodiment of this application, the switching mechanism includes a movable seat 25 connected to the outside of the stabilizing rod 33, a plug-in cavity disposed inside the movable seat, and an inner ring cavity 26 opened on the inner ring surface of the plug-in cavity. One end of a rotating column 24 is inserted into the plug-in cavity. A sleeve 28 is disposed on the outer ring surface of the rotating column 24 corresponding to the position of the inner ring cavity 26. One end of a sleeve column 29 is connected to the bottom of the sleeve 28 through a retaining spring 31. A plurality of pin holes 27 are opened around the inside of the inner ring cavity 26, and the other end of the sleeve column 29 is switched in the plurality of pin holes 27. A lever is also connected to the outside of the rotating column 24 between the switching element 23 and the moving seat 25. The position of the lever is perpendicular to the switching element 23. The fourth screw 43 and the third screw 32 have the same length, but their outer threads are in opposite directions.

[0026] This embodiment is implemented as follows: the switching component 23 in the switching mechanism is set in a cross shape, and each of the four top ends is provided with a universally compatible opening for inserting different clamping components 22. As for how to adjust it, this embodiment uses a lever to drive the rotating column 24 to rotate, so that the switching component 23 can rotate inside the moving seat 25. In order to ensure stability while rotating, the sleeve 28 cooperates with the sleeve column 29 to rotate inside the inner ring cavity 26. During the rotation, the force is released by the clamping spring 31 set in the sleeve 28, which pushes the sleeve column 29 out and abuts inside the pin hole 27, thus realizing the switching of adjustment and fixation.

[0027] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As a preferred embodiment of this application, the feeding and cleaning assembly 2 specifically includes a feeding mechanism 3 located on the other side of the base 1, and a cleaning mechanism 4 connected to the feeding mechanism 3; The feeding mechanism 3 specifically includes a feeding cylinder 6 installed on the other side of the base 1 and a telescopic part 9 connected to the movable end of the feeding cylinder 6. The cleaning mechanism 4 is connected above the telescopic part 9. Guide inclined blocks 7 are provided at both ends of the other side of the base 1. The guide inclined blocks 7 are provided with a slope that faces the clamping component 5 and is inclined from top to bottom. A bonding block 8 is attached to the slope. The bonding block 8 is connected to both sides of the cleaning structure. Furthermore, when the moving end of the feeding cylinder 6 pushes the telescopic part 9 to move the cleaning mechanism 4, the telescopic part 9 pulls back the cleaning mechanism 4 to move along the slope, sending the cleaning mechanism 4 and the shaft parts to be inspected into the clamping assembly 5.

[0028] Furthermore, the telescopic part 9 specifically includes a sliding seat 16 connected to the movable end of the feeding cylinder 6, a shrinking cylinder 17 installed on the upper end of the sliding part, and a shrinking spring 18 disposed inside the telescopic cylinder. The top end of the shrinking spring 18 is connected to one end of the shrinking column 19, and the other end of the shrinking column 19 is connected to the bottom of the cleaning mechanism 4.

[0029] Furthermore, the cleaning mechanism 4 specifically includes a cleaning frame 12 connected to the upper end of the telescopic part 9 and a first motor 13 provided at one end of the cleaning frame 12. The power output shaft of the first motor 13 extends into the cleaning frame 12 and is connected to one end of a first screw 11. The other end of the first screw 11 is connected to one end of a second screw 15. Cleaning screw sleeves 10 are symmetrically arranged on the outer sides of the first screw 11 and the second screw 15. A feeding seat 14 is connected to a single cleaning screw sleeve 10. One end of an extension rod 20 is connected to the side of the feeding seat 14. The other end of the extension rod 20 is connected to a feeding lap ring 21. The feeding lap ring 21 is used to carry the shaft parts to be inspected. Furthermore, the first screw 11 and the second screw 15 have the same length, but their outer threads are in opposite directions.

[0030] Furthermore, the feeding ring 21 has an extrusion chamber 35 inside. The extrusion chamber 35 has an opening on the inner side of the upper end of the feeding ring 21. A rotating shaft 37 is provided at the upper end of the feeding ring 21. One end of the extrusion arc plate 38 is connected to the outer side of the rotating shaft 37. Inside the extrusion chamber 35, at the opening, there is also a pressure-bearing arc plate 40. The pressure-bearing arc plate 40 is located below the extrusion arc plate 38. One end of the pressure-bearing arc plate 40 away from the extrusion arc plate 38 is connected to one end of the abutment spring 41. The other end of the abutment spring 41 is connected to one end of the surrounding arc plate 39. When the surrounding arc plate 39 is extruded by the extrusion arc plate 38 and the pressure-bearing arc plate 40 is squeezed by the abutment spring 41, it is squeezed out of the extrusion chamber 35 and wrapped around the outside of the shaft part to be tested. One end of the pressure arc plate 40 near the extrusion arc plate 38 is connected to one end of the return spring 36, and the other end of the return spring 36 is connected to the inside of the extrusion chamber 35.

[0031] Furthermore, the pressure arc plate 40 is provided with several rolling columns 42 located below the extrusion arc plate 38.

[0032] Furthermore, flexible cleaning components are provided on the inner sides of both the feeding ring 21 and the surrounding arc plate 39.

[0033] This embodiment is implemented as follows: The purpose of the feeding and cleaning component 2 is to support the shaft-like parts outside the base 1 and feed them into the clamping component 5 for clamping and inspection. During this process, the external parts of the shaft-like parts are adhered and cleaned. The purpose of the adherence is to achieve better appearance cleaning.

[0034] Firstly, the feeding part is achieved through the feeding mechanism 3. The feeding mechanism 3 uses the feeding cylinder 6 to push the telescopic part 9 and the cleaning mechanism 4 into the clamping assembly 5. However, the pushing operation of the feeding cylinder 6 alone cannot achieve the external contact between the cleaning mechanism 4 and the shaft part. Therefore, a guide wedge 7 is used in conjunction with the contact block 8 and the telescopic part 9. The slopes on the outside of the contact block 8 and the guide wedge 7 are in contact. This ensures that when the cleaning mechanism 4 is not in the clamping assembly 5, it is located at the high point on the left side of the guide wedge 7. When it is fed in, the telescopic part 9 will pull the cleaning mechanism 4 down to move along the slope and send the cleaning mechanism 4 and the shaft part to be inspected into the clamping assembly 5, and make it horizontal with the clamping member 22 inside the clamping assembly 5, so that the clamping member 22 can stably clamp the shaft part.

[0035] Furthermore, after the clamping member 22 has clamped the shaft part, the feeding cylinder 6 will continue to push the telescopic part 9. At this time, the telescopic part 9 will also pull down the cleaning mechanism 4, so that the extrusion arc plate 38 inside the feeding ring 21 contacts the outside of the shaft part. Simultaneously, the pressure arc plate 40 will be extruded by the extrusion arc plate 38 and move into the extrusion cavity 35. During the displacement, the abutment spring 41 will squeeze the surrounding arc plate 39 out of the extrusion cavity 35, thus wrapping around the outer ring surface of the shaft part. In order to ensure that the lower outer side of the shaft part can still contact the lower side of the feeding ring 21 at this time, a flexible cleaning member can be used. The flexible cleaning member can be a cleaning brush made of rubber or shrinkable material, so that after the shaft part leaves the lower side of the feeding ring 21, it can stand upright and ensure contact with the lower side of the feeding ring 21.

[0036] At this point, simultaneous cleaning at both ends can be performed. The power output shaft of the first motor 13 drives the first screw 11 inside the cleaning frame 12 to rotate. The first screw 11 drives the second screw 15 to rotate. When both rotate, they drive the outer cleaning screw sleeve 10 to rotate. Since the feeding seat 14 is connected above the cleaning screw sleeve 10 and slides above the cleaning frame 12, it restricts the rotation of the cleaning screw sleeve 10. This achieves the displacement of the cleaning screw sleeve 10 and the feeding ring 21. Since the first screw 11 and the second screw 15 have the same length and their outer thread directions are opposite, the displacement directions of the two cleaning screw sleeves 10 and the feeding rings 21 connected to them are opposite. This achieves simultaneous displacement from the middle section of the shaft part to both ends for appearance cleaning.

[0037] In summary, this invention, by setting up a base 1, a feeding and cleaning assembly 2, and a clamping assembly 5, allows for a wide range of adjustable clamping lengths. Furthermore, the feeding and cleaning assembly 2 feeds material from the side of the base 1, making operation convenient and significantly improving applicability and feeding efficiency. The feeding and cleaning assembly 2 consists of a feeding mechanism 3 and a cleaning mechanism 4. After the feeding mechanism 3 feeds the shaft part to be inspected into the clamping assembly 5, the cleaning mechanism 4 automatically wraps it, achieving simultaneous cleaning from the center of the shaft part to both sides. This improves the efficiency of cleaning the outer side of the shaft part and enhances the efficiency of visual inspection. Additionally, the switching mechanism inside the clamping assembly 5 works with the clamping member 22, allowing for free switching between different clamping members 22 to fix shaft parts with different end shapes, further improving applicability.

[0038] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for detecting the axial dimension of shaft-type parts, comprising a base (1), characterized in that: On the opposite sides of the base (1), there are parallel feeding and cleaning components (2) and clamping components (5). The feeding and cleaning assembly (2) is used to feed the shaft parts to be inspected into the clamping assembly (5) and to perform surface cleaning on the outside of the shaft parts to be inspected. The clamping assembly (5) is used to receive and clamp the shaft parts to be inspected fed by the feeding and cleaning assembly (2), and to inspect the axial dimensions of the shaft parts; The clamping assembly (5) specifically includes a mounting slot (34) set on one side of the base (1) and a second motor (44) placed inside one end of the mounting slot (34). The power output shaft of the second motor (44) is connected to one end of the fourth screw (43), and the other end of the fourth screw (43) is connected to the third screw (32). Two clamping sleeves (30) are symmetrically connected to the outside of the fourth screw (43) and the third screw (32). A switching mechanism is connected to a single clamping sleeve (30) through a stabilizing rod (33). A switching component (23) is also connected to the switching mechanism. The switching component (23) has a cross structure, and a clamping component (22) is inserted into any end of the switching component (23). A length detection device is provided on the clamping component (22). The feeding and cleaning assembly (2) specifically includes a feeding mechanism (3) located on the other side of the base (1), and a cleaning mechanism (4) connected to the feeding mechanism (3); The feeding mechanism (3) specifically includes a feeding cylinder (6) installed on the other side of the base (1) and a telescopic part (9) connected to the movable end of the feeding cylinder (6). The cleaning mechanism (4) is connected above the telescopic part (9). Guide inclined blocks (7) are provided at both ends of the other side of the base (1). A slope is provided on the guide inclined block (7) facing the clamping component (5) and inclined from top to bottom. A bonding block (8) is attached to the slope. The bonding block (8) is connected to both sides of the cleaning structure. When the moving end of the feeding cylinder (6) pushes the telescopic part (9) to drive the cleaning mechanism (4) to move, the telescopic part (9) pulls back the cleaning mechanism (4) to move along the slope and send the cleaning mechanism (4) and the shaft parts to be inspected into the clamping assembly (5); The telescopic part (9) specifically includes a sliding seat (16) connected to the moving end of the feeding cylinder (6), a shrinking cylinder (17) installed on the upper end of the sliding part, and a shrinking spring (18) installed inside the telescopic cylinder. The top end of the shrinking spring (18) is connected to one end of the shrinking column (19), and the other end of the shrinking column (19) is connected to the bottom of the cleaning mechanism (4). The cleaning mechanism (4) specifically includes a cleaning frame (12) connected to the upper end of the telescopic part (9) and a first motor (13) set at one end of the cleaning frame (12). The power output shaft of the first motor (13) extends into the cleaning frame (12) and is connected to one end of the first screw (11). The other end of the first screw (11) is connected to one end of the second screw (15). Cleaning screw sleeves (10) are symmetrically arranged on the outer sides of the first screw (11) and the second screw (15). A feeding seat (14) is connected to a single cleaning screw sleeve (10). One end of the extension rod (20) is connected to the side of the feeding seat (14). The other end of the extension rod (20) is connected to a feeding ring (21). The feeding ring (21) is used to carry the shaft parts to be inspected. Furthermore, the first screw (11) and the second screw (15) have the same length, and their outer threads are in opposite directions; The feeding ring (21) has an extrusion chamber (35) inside. The extrusion chamber (35) has an opening on the inner side of the upper end of the feeding ring (21). The opening is located at the upper end of the feeding ring (21) and a rotating shaft (37) is provided. One end of the extrusion arc plate (38) is connected to the outer side of the rotating shaft (37). Inside the extrusion chamber (35), a pressure-bearing arc plate (40) is also provided at the opening. The pressure-bearing arc plate (40) is located below the extrusion arc plate (38). One end of the pressure-bearing arc plate (40) away from the extrusion arc plate (38) is connected to one end of the abutment spring (41). The other end of the abutment spring (41) is connected to one end of the surrounding arc plate (39). When the surrounding arc plate (39) is extruded by the abutment spring (41) from the pressure-bearing arc plate (40) by the extrusion arc plate (38), it is squeezed out of the extrusion chamber (35) and wrapped around the outside of the shaft part to be tested. One end of the pressure arc plate (40) near the extrusion arc plate (38) is connected to one end of the return spring (36), and the other end of the return spring (36) is connected to the inside of the extrusion chamber (35).

2. The axial dimension detection device for shaft-type parts according to claim 1, characterized in that, The switching mechanism includes a movable seat (25) connected to the outside of the stabilizer bar (33), a plug-in cavity set inside the movable seat, and an inner ring cavity (26) opened on the inner ring surface of the plug-in cavity. One end of a rotating column (24) is inserted into the plug-in cavity. A sleeve (28) is set on the outer ring surface of the rotating column (24) corresponding to the position of the inner ring cavity (26). One end of a sleeve column (29) is connected to the bottom of the sleeve (28) through a retaining spring (31). Several pin holes (27) are opened around the inside of the inner ring cavity (26), and the other end of the sleeve column (29) is switched in several pin holes (27). A lever is also connected to the outside of the rotating column (24) between the switching element (23) and the moving seat (25). The position of the lever is perpendicular to the switching element (23). The fourth screw (43) and the third screw (32) have the same length and opposite outer thread directions.

3. The axial dimension detection device for shaft-type parts according to claim 1, characterized in that, Several rolling columns (42) are also provided below the extrusion arc plate (38) of the pressure arc plate (40).

4. The axial dimension detection device for shaft-type parts according to claim 1, characterized in that, Flexible cleaning components are provided on the inner sides of both the feeding ring (21) and the surrounding arc plate (39).

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