Three-pin shaft fork inner raceway detection device

Abstract

The utility model belongs to the technical field of three-pin shaft fork inner raceway detection, and particularly relates to a three-pin shaft fork inner raceway detection device, which comprises a bottom plate, wherein a fixed frame is fixed at the top end of one end of the bottom plate; a positioning sleeve is fixed at the other end of the bottom plate; a hydraulic rod is fixed to the position, corresponding to the positioning sleeve, of the bottom plate. A measuring head is fixed at the telescopic end of the hydraulic rod; the top end of the positioning sleeve is provided with a positioning groove at a position corresponding to the measuring head. Through the cooperative structural design of a contact plate, a moving column, a fixing block, a transmission assembly and a clamping plate, when a machined part is placed in a positioning groove, the clamping plate can be driven to move through the transmission assembly through movement of the contact plate, the moving column and the fixing block; according to the pin shaft part machining device, the clamping plates are arranged, so that the machined pin shaft parts are clamped and fixed through movement of the clamping plates, operators do not need to fix the pin shaft parts through other tools, the working efficiency of detection is improved, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of inner raceway detection of three-pin forks, and specifically relates to a device for detecting the inner raceway of a three-pin fork. Background Technique

[0002] The three-pin fork is a component of an automotive drive shaft. The three-pin fork and the three-pin joint cooperate to form a universal joint of the drive shaft. The accuracy of the inner raceway of the three-pin fork directly affects the performance of the universal joint. Therefore, during the processing of the three-pin fork, the accuracy of the inner raceway of the three-pin fork should be reliably ensured.

[0003] In practical applications, in the production and detection processes of three-pin forks in the fields of automobiles, machinery, aerospace, etc. By regularly detecting the inner raceway of the three-pin fork, problems in the production process can be discovered and corrected in a timely manner, ensuring the stability and reliability of the product quality and performance.

[0004] In the prior art, during the processing of the three-pin fork, the measurement of the inner raceway is very inconvenient. A special measuring instrument is required for measurement. This measurement method results in a low measurement efficiency of the three-pin fork, and at the same time, it is inconvenient to fix the three-pin fork. Therefore, a device for detecting the inner raceway of a three-pin fork is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background technique, the utility model proposes a device for detecting the inner raceway of a three-pin fork.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: A device for detecting the inner raceway of a three-pin fork according to the utility model includes a bottom plate: A fixed frame is fixed at the top end of one end of the bottom plate; A positioning sleeve is fixed at the top end of the other end of the bottom plate; A hydraulic rod is fixed at a position corresponding to the positioning sleeve on the bottom plate; A measuring head is fixed at the telescopic end of the hydraulic rod; A positioning groove is opened at a position corresponding to the measuring head at the top end of the positioning sleeve; A clamping assembly is arranged at a position corresponding to the positioning groove inside the positioning sleeve; The clamping assembly includes a moving column; The moving column is vertically arranged inside the positioning sleeve; The moving column is slidably connected to the positioning sleeve; The top end of the moving column extends into the positioning groove, and a contact plate is fixed at the top end of the moving column; A plurality of fixing blocks are fixed on the outer side of the moving column; The fixing blocks are slidably connected to the positioning sleeve; A transmission assembly is arranged at a position corresponding to the fixing blocks inside the positioning sleeve; The clamping assembly further includes a plurality of clamping plates; Every two clamping plates are respectively arranged on both sides of the axial groove of the positioning groove; The clamping plates are connected to the fixing blocks through the transmission assembly; A plugging assembly is arranged at a position corresponding to the anti-detachment plate inside the positioning sleeve.

[0007] Preferably, the transmission assembly includes a driving rack; the driving rack is fixed at a position on the side of the fixed block away from the moving column; the driving rack is slidably connected to the positioning sleeve; a transmission rod is rotatably connected to a position inside the positioning sleeve corresponding to the driving rack; a transmission gear is fixed to the transmission rod at a position corresponding to the driving rack; the transmission gear is meshed with the driving rack.

[0008] Preferably, an adjusting screw rod is rotatably connected to a position inside the positioning sleeve corresponding to the clamping plate; an internal threaded rod is threadedly connected to the outer side of the end of the adjusting screw rod close to the clamping plate; the internal threaded rod is slidably connected to the positioning sleeve; transmission wheels are fixed to the other end of the clamping plate and the end of the transmission rod; two transmission wheels at the same end are drivingly connected by a transmission belt.

[0009] Preferably, an anti - detachment plate is fixed to the lower end of the moving column; the anti - detachment plate is slidably connected to the positioning sleeve; a first spring is fixed to the lower end of the anti - detachment plate; the other end of the first spring is fixedly connected to the positioning sleeve.

[0010] Preferably, the plug - in assembly includes a plurality of adjusting holes; a plurality of adjusting holes are evenly formed on one side of the moving column; a moving rod is arranged at a position inside the positioning sleeve corresponding to the adjusting holes; the moving rod is slidably connected to the positioning sleeve; a plug - in block is fixed to the end of the moving rod close to the adjusting holes; the plug - in block is slidably connected to the positioning sleeve; the plug - in block is plugged into the moving column through the adjusting holes.

[0011] Preferably, a second spring is sleeved on the outer side of the end of the moving rod close to the plug - in block; one end of the second spring is fixedly connected to the plug - in block; the other end of the second spring is fixedly connected to the positioning sleeve.

[0012] Preferably, the end of the moving rod away from the plug - in block extends to the outside of the positioning sleeve; a lifting ball is fixed to the end of the moving rod located outside the positioning sleeve.

[0013] The beneficial effects of the present utility model:

[0014] 1. The present utility model provides a three - pin - shaft fork inner raceway detection device. Through the cooperative structural design of the contact plate, the moving column, the fixed block, the transmission assembly and the clamping plate, when the workpiece to be processed is placed inside the positioning groove, the movement of the contact plate, the moving column and the fixed block can drive the clamping plate to move through the transmission assembly, so as to clamp and fix each pin - shaft part of the processed workpiece by the movement of the clamping plate. Thus, it is not necessary for the operator to fix it with other tools, which improves the detection work efficiency and enhances the practicability of the device.

[0015] 2. The present utility model provides a detection device for the inner raceway of a three-pin fork. Through the structural design of the first spring, when the limit on the moving column is removed, the first spring can push the moving column upward, thereby enabling the clamping plate to move in the reverse direction. While canceling the clamping of the workpiece, the workpiece can be pushed upward from the inner side of the positioning groove through the movement of the moving column and the contact plate, effectively improving the working efficiency of disassembling the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 is a perspective view of the present utility model;

[0018] Figure 2 is a perspective view of the clamping assembly in the present utility model;

[0019] Figure 3 is a perspective view of the transmission assembly in the present utility model;

[0020] Figure 4 is a perspective view of the plug-in assembly in the present utility model.

[0021] LEGEND DESCRIPTION:

[0022] 1. Bottom plate; 2. Fixed frame; 3. Hydraulic rod; 4. Measuring head; 5. Positioning sleeve; 6. Positioning groove; 7. Contact plate; 8. Moving column; 9. Fixed block; 10. Driving rack; 11. Transmission gear; 12. Transmission rod; 13. Clamping plate; 14. Transmission wheel; 15. Transmission belt; 16. Adjusting screw; 17. Built-in threaded rod; 18. Anti-disengagement plate; 19. First spring; 20. Adjusting hole; 21. Plug-in block; 22. Moving rod; 23. Pulling ball; 24. Second spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The following gives specific embodiments.

[0025] Please refer to Figures 1-4, the utility model provides a three-pin fork inner raceway detection device, including a bottom plate 1: a fixed frame 2 is fixed at the top end of one end of the bottom plate 1; a positioning sleeve 5 is fixed at the top end of the other end of the bottom plate 1; a hydraulic rod 3 is fixed at a position corresponding to the positioning sleeve 5 on the bottom plate 1; a measuring head 4 is fixed at the telescopic end of the hydraulic rod 3; a positioning groove 6 is opened at a position corresponding to the measuring head 4 at the top end of the positioning sleeve 5; a clamping assembly is arranged at a position corresponding to the positioning groove 6 inside the positioning sleeve 5; the clamping assembly includes a moving column 8; the moving column 8 is vertically arranged inside the positioning sleeve 5; the moving column 8 is slidably connected with the positioning sleeve 5; the top end of the moving column 8 extends into the positioning groove 6, and a contact plate 7 is fixed at the top end of the moving column 8; a plurality of fixing blocks 9 are fixed on the outer side of the moving column 8; the fixing blocks 9 are slidably connected with the positioning sleeve 5; a transmission assembly is arranged at a position corresponding to the fixing blocks 9 inside the positioning sleeve 5; the clamping assembly further includes a plurality of clamping plates 13; every two clamping plates 13 are respectively arranged on both sides of the axial groove of the positioning groove 6; the clamping plates 13 are connected with the fixing blocks 9 through the transmission assembly; a plugging assembly is arranged at a position corresponding to the anti-detachment plate 18 inside the positioning sleeve 5. When working, first place the workpiece inside the positioning groove 6. When the workpiece moves into the positioning groove 6, it will contact the contact plate 7. At the same time, the moving column 8 is driven to move through the contact plate 7. When the moving column 8 moves, the fixing blocks 9 are driven to move simultaneously. When the fixing blocks 9 move, the clamping plates 13 located on both sides of the axial groove are driven to move towards each other through the transmission assembly, so as to clamp and fix each pin shaft of the three-pin fork shaft, thus fixing it. Subsequently, the measuring head 4 is driven to move through the hydraulic rod 3, and the workpiece is detected through the measuring head 4. When the workpiece needs to be removed after the detection, the limit on the moving column 8 is cancelled through the plugging assembly, so that the moving column 8 can move, and thus the clamping of the workpiece by the clamping plates 13 is driven by the movement of the moving column 8. Through the cooperative structural design of the contact plate 7, the moving column 8, the fixing blocks 9, the transmission assembly and the clamping plates 13, when the workpiece is placed inside the positioning groove 6, the movement of the contact plate 7, the moving column 8 and the fixing blocks 9 can drive the clamping plates 13 to move through the transmission assembly, so as to clamp and fix each pin shaft part of the workpiece through the movement of the clamping plates 13, thus eliminating the need for operators to fix it with other tools, improving the working efficiency of the detection and enhancing the practicability of the device;

[0026] Further, as Figure 2 and Figure 3As shown in the figure, the transmission assembly includes a driving rack 10; the driving rack 10 is fixed at a position on the side of the fixed block 9 away from the moving column 8; the driving rack 10 is slidably connected to the positioning sleeve 5; a transmission rod 12 is rotatably connected at a position inside the positioning sleeve 5 corresponding to the driving rack 10; a transmission gear 11 is fixed at a position on the transmission rod 12 corresponding to the driving rack 10; the transmission gear 11 is meshed with the driving rack 10. During operation, when the fixed block 9 moves, it drives the driving rack 10 fixed thereto to move simultaneously. When the driving rack 10 moves, it drives the transmission rod 12 to rotate through the transmission gear 11 meshed therewith. This step can be achieved through the cooperative structural design of the transmission gear 11 and the driving rack 10, enabling the transmission rod 12 to be driven to rotate by the driving rack 10 and the transmission gear 11 when the fixed block 9 moves.

[0027] Further, as Figure 2 and Figure 3 shown in the figure, an adjusting screw rod 16 is rotatably connected at a position inside the positioning sleeve 5 corresponding to the clamping plate 13; an internal threaded rod 17 is threadedly connected to the outer side of one end of the adjusting screw rod 16 close to the clamping plate 13; the internal threaded rod 17 is slidably connected to the positioning sleeve 5; transmission wheels 14 are fixed to both the other end of the clamping plate 13 and the end of the transmission rod 12; two transmission wheels 14 at the same end are drivingly connected by a transmission belt 15. During operation, when the transmission rod 12 rotates, it drives the adjusting screw rod 16 to rotate simultaneously through the transmission wheels 14 and the transmission belt 15. When the adjusting screw rod 16 rotates, it drives the internal threaded rod 17 threadedly connected thereto to move along the axial direction of the adjusting screw rod 16. Furthermore, when the adjusting screw rod 16 moves, it can drive the clamping plate 13 fixed thereto to move simultaneously, so that the workpiece can be clamped and fixed by the clamping plate 13. This step, through the structural design of the adjusting screw rod 16 and the internal threaded rod 17, enables the adjusting screw rod 16 to be driven to rotate by the transmission rod 12 through the transmission wheels 14 and the transmission belt 15 when the transmission rod 12 rotates, and thus the clamping plate 13 can be driven to move by the internal threaded rod 17 threadedly connected thereto when the adjusting screw rod 16 rotates.

[0028] As Figure 3As shown in the figure, an anti - detachment plate 18 is fixed to the lower end of the movable column 8; the anti - detachment plate 18 is slidably connected to the positioning sleeve 5; a first spring 19 is fixed to the lower end of the anti - detachment plate 18; the other end of the first spring 19 is fixedly connected to the positioning sleeve 5. During operation, when it is necessary to remove the workpiece, first, the limit on the movable column 8 is cancelled through the insertion component. At this time, under the elastic action of the first spring 19, the movable column 8 is driven to move upward through the anti - detachment plate 18, thereby being able to drive the clamping plate 13 to move in the reverse direction. Through the structural design of the first spring 19 in this step, when the limit on the movable column 8 is cancelled, the movable column 8 can be pushed upward by the first spring 19, so that the clamping plate 13 can be moved in the reverse direction. While cancelling the clamping of the workpiece, the workpiece can also be pushed upward from the inside of the positioning groove 6 through the movement of the movable column 8 and the contact plate 7, effectively improving the working efficiency of disassembling the workpiece.

[0029] As Figure 4 shown in the figure, the insertion component includes a plurality of adjustment holes 20; a plurality of adjustment holes 20 are evenly arranged on one side of the movable column 8; a movable rod 22 is arranged at a position corresponding to the adjustment holes 20 inside the positioning sleeve 5; the movable rod 22 is slidably connected to the positioning sleeve 5; a plug - in block 21 is fixed to one end of the movable rod 22 close to the adjustment hole 20; the plug - in block 21 is slidably connected to the positioning sleeve 5; the plug - in block 21 is inserted and connected to the movable column 8 through the adjustment hole 20. During operation, when clamping workpieces of different sizes, the descending height of the movable column 8 is different. When the movable column 8 moves to a position where one of the adjustment holes 20 corresponds to the plug - in block 21, the limit on the movable column 8 can be completed through the plug - in block 21, making the movable column 8 unable to move upward. Through the structural design of the plug - in block 21 in this step, the movable column 8 can be limited, thus avoiding the upward movement of the movable column 8 and effectively improving the stability of workpiece clamping.

[0030] As Figure 4 shown in the figure, a second spring 24 is sleeved on the outer side of one end of the movable rod 22 close to the plug - in block 21; one end of the second spring 24 is fixedly connected to the plug - in block 21; the other end of the second spring 24 is fixedly connected to the positioning sleeve 5. During operation, when the movable column 8 moves, it will squeeze the plug - in block 21, causing the plug - in block 21 to move in the direction close to the second spring 24. When the movable column 8 moves to a position where the adjustment hole 20 corresponds to the plug - in block 21, the plug - in block 21 can be pushed into the inside of the adjustment hole 20 through the elastic action of the second spring 24 to complete the limit on the movable column 8. Through the structural design of the second spring 24 in this step, the plug - in block 21 can be limited, and at the same time, after the plug - in block 21 moves in the direction away from the movable column 8, the plug - in block 21 can be pushed in the direction close to the movable column 8, improving the stability of the plug - in block 21.

[0031] As Figure 4As shown, one end of the moving rod 22 away from the plug-in block 21 extends to the outside of the positioning sleeve 5; a lifting ball 23 is fixed at one end of the moving rod 22 located outside the positioning sleeve 5. When it is necessary to cancel the limit on the moving column 8 during work, first, by pulling the lifting ball 23, the lifting ball 23 drives the plug-in block 21 to move through the moving rod 22. This step facilitates the operator to drive the plug-in block 21 to move by pulling the lifting ball 23, thereby canceling the limit on the moving column 8 and improving the operation convenience.

[0032] Working principle: During work, first place the workpiece inside the positioning groove 6. When the positioning groove 6 moves into the positioning groove 6, it will contact the contact plate 7, and at the same time drive the moving column 8 to move through the contact plate 7. When the moving column 8 moves, it drives the fixed block 9 to move simultaneously. When the fixed block 9 moves, it drives the clamping plates 13 on both sides of the shaft groove to move towards each other through the transmission component, so as to clamp and fix each pin shaft of the three-pin fork shaft through the two clamping plates 13, and then fix it. Subsequently, drive the measuring head 4 to move through the hydraulic rod 3, and detect the workpiece through the measuring head 4. When it is necessary to remove the workpiece after the detection is completed, cancel the limit on the moving column 8 through the plug-in component, so that the moving column 8 can move, and then drive the clamping of the workpiece by the clamping plate 13 through the movement of the moving column 8; when the fixed block 9 moves, it drives the driving rack 10 fixed to it to move simultaneously. When the driving rack 10 moves, it drives the transmission rod 12 to rotate through the transmission gear 11 meshed with it; when the transmission rod 12 rotates, it drives the adjusting screw 16 to rotate simultaneously through the transmission wheel 14 and the transmission belt 15. When the adjusting screw 16 rotates, it drives the built-in threaded rod 17 threaded with it to move along the axial direction of the adjusting screw 16. Furthermore, when the adjusting screw 16 moves, it can drive the clamping plate 13 fixed to it to move simultaneously, so as to clamp and fix the workpiece through the clamping plate 13; when the moving column 8 moves, it will squeeze the plug-in block 21, so that the plug-in block 21 moves towards the direction close to the second spring 24. When the moving column 8 moves to the position where the adjusting hole 20 corresponds to the plug-in block 21, the plug-in block 21 can be pushed into the inner side of the adjusting hole 20 by the elastic action of the second spring 24 to complete the limit on the moving column 8; when clamping workpieces of different sizes, the descending height of the moving column 8 is different. When the moving column 8 moves to the position where one of the adjusting holes 20 corresponds to the plug-in block 21, the limit on the moving column 8 can be completed through the plug-in block 21, so that the moving column 8 cannot move upward; when it is necessary to remove the workpiece, first cancel the limit on the moving column 8 through the plug-in component. At this time, under the elastic action of the first spring 19, drive the moving column 8 to move upward through the anti-disengagement plate 18, so as to drive the clamping plate 13 to move in the reverse direction.

[0033] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A three-pin fork inner raceway detection device, comprising a base plate (1), characterized in that: A fixing frame (2) is fixed to the top of one end of the base plate (1); a positioning sleeve (5) is fixed to the top of the other end of the base plate (1); a hydraulic rod (3) is fixed at a position of the base plate (1) corresponding to the positioning sleeve (5); a measuring head (4) is fixed to the telescopic end of the hydraulic rod (3); a positioning groove (6) is provided at the top of the positioning sleeve (5) and at a position corresponding to the measuring head (4); a clamping assembly is provided at a position on the inner side of the positioning sleeve (5) and corresponding to the positioning groove (6); the clamping assembly comprises a moving column (8); the moving column (8) is vertically arranged on the inner side of the positioning sleeve (5); the moving column (8) is slidably connected to the positioning sleeve (5); the moving column (8) is The top end of the moving column (8) extends to the inside of the positioning groove (6), and a contact plate (7) is fixed to the top end of the moving column (8); a plurality of fixed blocks (9) are fixed to the outside of the moving column (8); the fixed blocks (9) are slidably connected to the positioning sleeve (5); a transmission component is arranged on the inner side of the positioning sleeve (5) and at a position corresponding to the fixed blocks (9); the clamping component also includes a plurality of clamping plates (13); every two of the clamping plates (13) are respectively arranged at the positions on both sides of the shaft groove of the positioning groove (6); the clamping plates (13) are connected to the fixed blocks (9) through the transmission component; a plug-in component is arranged on the inner side of the positioning sleeve (5) and at a position corresponding to the anti-slip plate (18).

2. A tripod fork inner raceway detection device as claimed in claim 1, characterized in that: The transmission assembly comprises a driving rack (10); the driving rack (10) is fixed at a position on one side of the fixed block (9) away from the movable column (8); the driving rack (10) is slidably connected to the positioning sleeve (5); a transmission rod (12) is rotatably connected to the inner side of the positioning sleeve (5) at a position corresponding to the driving rack (10); a transmission gear (11) is fixed at a position of the transmission rod (12) corresponding to the driving rack (10); and the transmission gear (11) is meshingly connected to the driving rack (10).

3. A tripod inner raceway detection device as claimed in claim 2, characterized in that: An adjusting screw (16) is rotatably connected to the inner side of the positioning sleeve (5) at a position corresponding to the clamping plate (13); an outer side of one end of the adjusting screw (16) close to the clamping plate (13) is threadedly connected to an internal threaded rod (17); the internal threaded rod (17) is slidably connected to the positioning sleeve (5); a transmission wheel (14) is fixed to the other end of the clamping plate (13) and the end of the transmission rod (12); and the two transmission wheels (14) at the same end are connected in transmission via a transmission belt (15).

4. A tripod inner raceway detection device as claimed in claim 1, characterized in that: An anti-slip plate (18) is fixed at the lower end of the movable column (8); the anti-slip plate (18) is slidably connected to the positioning sleeve (5); a first spring (19) is fixed at the lower end of the anti-slip plate (18); the other end of the first spring (19) is fixedly connected to the positioning sleeve (5).

5. A tripod inner raceway detection device as claimed in claim 1, characterized in that: The plug-in assembly comprises a plurality of adjustment holes (20); a plurality of adjustment holes (20) are evenly formed on one side of the movable column (8); a movable rod (22) is provided on the inner side of the positioning sleeve (5) and at a position corresponding to the adjustment hole (20); the movable rod (22) is slidably connected to the positioning sleeve (5); a plug-in block (21) is fixed to one end of the movable rod (22) close to the adjustment hole (20); the plug-in block (21) is slidably connected to the positioning sleeve (5); the plug-in block (21) is plug-connected to the movable column (8) through the adjustment hole (20).

6. A tripod inner raceway detection device as claimed in claim 5, characterized in that: A second spring (24) is sleeved on the outer side of one end of the moving rod (22) close to the plug-in block (21); one end of the second spring (24) is fixedly connected to the plug-in block (21); and the other end of the second spring (24) is fixedly connected to the positioning sleeve (5).

7. A tripod inner raceway detection device as claimed in claim 5, characterized in that: One end of the moving rod (22) away from the plug-in block (21) extends to the outside of the positioning sleeve (5); and a lifting ball (23) is fixed to the end of the moving rod (22) located outside the positioning sleeve (5).

Images