Camshaft hole roughness detection clamp

Abstract

The utility model relates to the technical field of camshaft detection clamps, in particular to a camshaft hole roughness detection clamp which comprises a track seat, a motor is fixedly connected to one end of the track seat, a screw is rotatably connected in the track seat, and the output end of the motor penetrates through the side wall of the track seat and is fixedly connected with one end of the screw. The top of one end of the rail base is slidably connected with a clamping assembly. By means of the rotating assembly, the fixing assembly and the clamping assembly, after one end of the cam shaft is fixed through the fixing assembly and then the middle of the cam shaft is stabilized through the clamping assembly, the rotating assembly can drive the cam shaft to rotate automatically by triggering the stopping plate, and the cam shaft can rotate automatically. Therefore, the roughness of the camshaft hole can be detected in an omnibearing and multi-angle manner, and the detection comprehensiveness and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of camshaft detection jigs, in particular to a camshaft hole roughness detection jig. Background Art

[0002] A camshaft is a component in a piston engine, and its function is to control the opening and closing of the valves. Although the rotational speed of the camshaft is half of that of the crankshaft in a four-stroke engine, its rotational speed is still usually very high. Therefore, high requirements are imposed on the strength and support of the camshaft in the design. As a result, high precision is required in the production of the camshaft. When producing the camshaft, it is necessary to scan the inner wall of its shaft hole to measure its surface roughness. At the same time, to ensure stable measurement of the camshaft during measurement, a jig is needed to fix it.

[0003] In the prior art, such as the "Jig for Measuring the Roughness of the Camshaft Hole of a Cylinder Head" with the Chinese patent number CN209102049U, it includes a portable roughness measuring instrument and a jig body. One end of the jig body is fixedly connected with a handle, and the handle has a hollow chamber. Although this technology can avoid friction or collision between the measuring needle and the measured part during testing, has a simple structure, is easy to operate, convenient for maintenance and replacement, and can greatly improve the measurement efficiency, it is the same as the traditional method in that: traditionally, when measuring the roughness of the camshaft hole, after fixing it with a jig, the jig and the camshaft are moved to make the measuring needle slide on the top of the camshaft, and then the data is transmitted to the measuring instrument through the measuring needle to analyze its roughness. Doing so, because the traditional jig cannot rotate after fixing the camshaft, the detection range is usually limited, and other surfaces of the camshaft cannot be detected, resulting in some areas not being detected, thus leading to the problem that the detected data is not accurate enough. At the same time, when manually adjusting the detection angle by hand, the operation steps are cumbersome and complex, time-consuming and laborious, affecting the work efficiency and detection speed. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to provide a camshaft hole roughness detection jig to solve the problem that the existing detection jig cannot rotate, resulting in the inability to detect other surfaces.

[0005] For the above purposes, the present utility model provides a roughness detection fixture for a camshaft hole, including a track base. One end of the track base is fixedly connected with a motor. A screw rod is rotatably connected inside the track base. The output end of the motor penetrates through the side wall of the track base and is fixedly connected with one end of the screw rod. A clamping assembly is slidably connected to the top of one end of the track base. The clamping assembly is used to fix the middle part of the camshaft. A fixing assembly is slidably connected to the top of the track base. The fixing assembly is used to fix one end of the camshaft. A linkage assembly is arranged between the fixing assembly and the clamping assembly. The linkage assembly is used to drive the fixing assembly and the clamping assembly to fix the middle part and one end of the camshaft in one step. A rotating assembly for rotating the camshaft is arranged on one side of the fixing assembly. The rotating assembly includes a U-shaped frame slidably connected to the top of the track base and a baffle fixedly connected to the top of one end of the track base. A rotating column is rotatably clamped inside one end of the U-shaped frame. A pressing cylinder is slidably clamped inside the other end of the U-shaped frame. One end of the pressing cylinder is sleeved outside one end of the rotating column. One end of the pressing cylinder is fixedly connected with a pressing column. An extrusion groove is formed on the outer part of the rotating column. One end of the pressing column penetrates through the side wall of the pressing cylinder and is slidably clamped inside the extrusion groove.

[0006] Preferably, the clamping assembly includes a fixing base slidably connected to the top of the track base. A fixing frame is fixedly connected to the top of the fixing base. A gear is rotatably connected inside the fixing base through a shaft. A second rack and a first rack are respectively meshed and connected to the top and bottom of the gear. The outer parts of the second rack and the first rack are respectively slidably clamped inside the side walls on both sides of the fixing base. The mutually remote ends of the second rack and the first rack are respectively rotatably connected with connecting plates through shafts. One ends of the two connecting plates, which are respectively remote from the second rack and the first rack, are rotatably connected with clamping rods through shafts. The end of the clamping rod remote from the connecting plate penetrates through the top of the fixing frame and is fixedly connected with an arc-shaped plate.

[0007] Preferably, fixing plates are respectively fixedly connected to both sides of the bottom of the fixing frame. One ends of the fixing plates remote from the fixing frame are rotatably connected with the middle parts of the connecting plates through shafts. A resisting plate is fixedly connected to the outer part of the clamping rod. A compression spring is fixedly connected to one side of the resisting plate. The compression spring is sleeved outside the clamping rod, and the other end of the compression spring is fixedly connected with one side of the fixing frame. The heights of the two arc-shaped plates are equal, and a plurality of pulleys are respectively rotatably connected to the opposite sides of the two arc-shaped plates through shafts.

[0008] Preferably, the fixing component includes a connecting cylinder rotatably connected to one end of the loop-shaped frame. One end of the connecting cylinder is fixedly connected with a fixing ring. One side of the fixing ring away from the connecting cylinder is rotatably clamped with an adjusting ring. One side of the adjusting ring is provided with a hexagonal groove. Six trapezoidal plates are slidably clamped inside the hexagonal groove. Six adjusting holes are provided inside the fixing ring. One side of the trapezoidal plate away from the adjusting ring is fixedly connected with a positioning column. One end of the positioning column away from the trapezoidal plate is slidably clamped inside the adjusting hole. The long sides and hypotenuses of the six trapezoidal plates are in contact with each other pairwise. An insertion hole is provided in the middle of the adjusting ring. The six trapezoidal plates are arranged in a ring on one side of the insertion hole.

[0009] Preferably, a positioning disk is fixedly connected to the outside of the connecting cylinder. A plurality of insertion holes are annularly provided on one side of the positioning disk. A plug rod is slidably connected inside the adjusting ring. The position of the plug rod corresponds to the position of the insertion hole. One end of the connecting cylinder is fixedly connected with one end of the rotating column.

[0010] Preferably, the linkage component includes a driving wheel fixedly connected to one side of the adjusting ring. The bottom of the driving wheel is connected with a driven wheel through a belt. One side of the driven wheel is fixedly connected with a connecting shaft. One end of the connecting shaft away from the driven wheel penetrates through the side wall of the fixed seat and is fixedly connected with one side of the gear. The outside of the middle of the connecting shaft is rotatably clamped with a moving frame.

[0011] Preferably, the shape of the extrusion groove is composed of two long grooves and two inclined grooves. The two ends of the two long grooves are respectively communicated with the two ends of the two inclined grooves.

[0012] Preferably, a positioning groove is provided at the top of the extrusion cylinder. A positioning rod is fixedly connected to the top of one end of the loop-shaped frame. The bottom end of the positioning rod penetrates through the inside of the loop-shaped frame and is slidably clamped inside the positioning groove. A return spring is fixedly connected inside the extrusion cylinder. One end of the return spring is fixedly connected with one end of the rotating column. One end of the extrusion cylinder is rotatably clamped with a rotating knob. The other end of the return spring is fixedly connected with one end of the rotating knob.

[0013] Preferably, the position of the abutting baffle corresponds to the position of the rotating knob, and the height of the abutting baffle is equal to the height of the rotating knob.

[0014] Preferably, three movable blocks are threadedly connected to the outside of the screw rod. A moving groove is provided at the top of the track seat. The tops of the three movable blocks respectively penetrate through the inside of the moving groove and are respectively fixedly connected with the bottom of the fixed seat, the bottom of the moving frame and the bottom of the loop-shaped frame.

[0015] The beneficial effects of the present utility model:

[0016] 1. Through the provided rotating component, fixing component, and clamping component, after the fixing component fixes one end of the camshaft, and then the clamping component stabilizes the middle part of the camshaft, the rotating component can prompt the camshaft to rotate automatically by triggering the baffle plate, which helps to detect the roughness of the camshaft hole comprehensively and multi - angularly, improving the comprehensiveness and accuracy of the detection.

[0017] 2. Through the provided clamping component, the middle part of the camshaft can be fixed, which facilitates the subsequent driving of the camshaft to rotate by the fixing component and the rotating component. At the same time, it can firmly fix the middle part of the camshaft, ensuring the stability and accuracy during the detection process.

[0018] 3. Through the provided fixing component, one end of the camshaft can be fixed, which facilitates the rotating component to drive the camshaft to rotate. At the same time, through the cooperation with the clamping component, the overall stability and firmness of the fixture are enhanced, ensuring the reliability during the detection process.

[0019] 4. Through the provided linkage component, the clamping component and the fixing component can be operated simultaneously in one step to fix the camshaft, simplifying the operation steps and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall three - dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall side - view sectional structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the three - dimensional structure of the rotating component part of the present invention;

[0024] Figure 4 For the present invention Figure 3 Side - view sectional structure diagram;

[0025] Figure 5 It is a schematic diagram of the enlarged structure of the adjusting ring and the fixing ring of the present invention;

[0026] Figure 6 It is a schematic diagram of the three - dimensional structure of the adjusting ring of the present invention.

[0027] The labels in the figure are:

[0028] 1. Orbit base; 2. Screw; 3. Motor; 4. Baffle; 5. Movable block; 6. Fixed base; 7. Gear; 8. First rack; 9. Second rack; 10. Connecting plate; 11. Fixed plate; 12. Clamping rod; 13. Extrusion spring; 14. Contact plate; 15. Fixed frame; 16. Arc plate; 17. Pulley; 18. Connecting shaft; 19. Linking wheel; 20. Driving wheel; 21. Adjusting ring; 22. Fixed ring; 23. Insertion hole; 24. Hexagonal groove; 25. Trapezoidal plate; 26. Adjusting hole; 27. Positioning column; 28. Connecting cylinder; 29. Positioning disc; 30. Inserting rod; 31. Rotating column; 32. Extrusion groove; 33. Return-shaped frame; 34. Extrusion cylinder; 35. Extrusion column; 36. Positioning groove; 37. Rotating knob; 38. Return spring. Detailed implementation mode

[0029] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the following further elaborates on the present utility model in combination with specific embodiments.

[0030] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meaning understood by those with general skills in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to represent relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0031] Refer to the present utility model Figures 1 to 6The shown camshaft hole roughness detection fixture is provided, which includes a track base 1. One end of the track base 1 is fixedly connected with a motor 3. A screw rod 2 is rotatably connected inside the track base 1. The output end of the motor 3 penetrates through the side wall of the track base 1 and is fixedly connected with one end of the screw rod 2. A clamping assembly is slidably connected to the top of one end of the track base 1. The clamping assembly is used to fix the middle part of the camshaft. A fixing assembly is slidably connected to the top of the track base 1. The fixing assembly is used to fix one end of the camshaft. A linkage assembly is arranged between the fixing assembly and the clamping assembly. The linkage assembly is used to drive the fixing assembly and the clamping assembly to fix the middle part and one end of the camshaft in one step. A rotating assembly for rotating the camshaft is arranged on one side of the fixing assembly. The rotating assembly includes a U-shaped frame 33 slidably connected to the top of the track base 1 and a baffle 4 fixedly connected to the top of one end of the track base 1. A rotating column 31 is rotatably clamped inside one end of the U-shaped frame 33. A pressing cylinder 34 is slidably clamped inside the other end of the U-shaped frame 33. One end of the pressing cylinder 34 is sleeved outside one end of the rotating column 31. One end of the pressing cylinder 34 is fixedly connected with a pressing column 35. A pressing groove 32 is formed on the outer side of the rotating column 31. One end of the pressing column 35 penetrates through the side wall of the pressing cylinder 34 and is slidably clamped inside the pressing groove 32;

[0032] By setting the rotating assembly, the fixing assembly and the clamping assembly, after the fixing assembly fixes one end of the camshaft, and then the clamping assembly stabilizes the middle part of the camshaft, the rotating assembly can automatically rotate the camshaft by triggering the baffle 4, which helps to detect the roughness of the camshaft hole in all directions and at multiple angles, improving the comprehensiveness and accuracy of the detection.

[0033] Such as Figure 1 and Figure 2As shown, the clamping assembly includes a fixed seat 6 slidably connected to the top of the rail seat 1. A fixed frame 15 is fixedly connected to the top of the fixed seat 6. A gear 7 is rotatably connected to the inside of the fixed seat 6 through a shaft. A second rack 9 and a first rack 8 are respectively meshed and connected to the top and bottom of the gear 7. The outer parts of the second rack 9 and the first rack 8 are respectively slidably clamped inside the side walls on both sides of the fixed seat 6. The mutually remote ends of the second rack 9 and the first rack 8 are respectively rotatably connected to a connecting plate 10 through a shaft. The mutually remote ends of the two connecting plates 10 away from the second rack 9 and the first rack 8 are respectively rotatably connected to a clamping rod 12 through a shaft. The end of the clamping rod 12 away from the connecting plate 10 penetrates through the top of the fixed frame 15 and is fixedly connected to an arc-shaped plate 16. Fixing plates 11 are respectively fixedly connected to both sides of the bottom of the fixed frame 15. The ends of the fixing plates 11 away from the fixed frame 15 are rotatably connected to the middle parts of the connecting plates 10 through a shaft. A resisting plate 14 is fixedly connected to the outside of the clamping rod 12. A compression spring 13 is fixedly connected to one side of the resisting plate 14. The compression spring 13 is sleeved on the outside of the clamping rod 12, and the other end of the compression spring 13 is fixedly connected to one side of the fixed frame 15. The heights of the two arc-shaped plates 16 are equal, and a plurality of pulleys 17 are respectively rotatably connected to the mutually facing sides of the two arc-shaped plates 16;

[0034] By providing the clamping assembly, the middle part of the camshaft can be fixed, thus facilitating the subsequent fixed assembly and rotating assembly to drive the camshaft to rotate. At the same time, the middle part of the camshaft can be firmly fixed to ensure the stability and accuracy during the detection process. When fixing the middle part of the camshaft, place the middle part of the camshaft between the two arc-shaped plates 16. At this time, rotate the gear 7 to cause the first rack 8 and the second rack 9 to move away from each other. According to the lever principle, at this time, the two connecting plates 10 will respectively drive the clamping rods 12 to move, and at the same time drive the mutually facing sides of the two arc-shaped plates 16 to approach each other. At this time, the two arc-shaped plates 16 will clamp the middle part of the camshaft, thereby fixing the middle part of the camshaft. At the same time, by setting the outer shape of the arc-shaped plate 16 to be arc-shaped, it can be ensured that the measuring needle can measure the camshaft between the two arc-shaped plates 16, thus facilitating the measurement of the camshaft. At the same time, by providing the pulleys 17, after the two arc-shaped plates 16 fix the camshaft, in order to facilitate the subsequent rotating assembly to drive the camshaft to rotate, when the rotating assembly drives the camshaft to rotate, the camshaft can rotate on one side of the pulleys 17, thus facilitating the rotation of the camshaft.

[0035] As Figures 3 to 6As shown in the figure, the fixing component includes a connecting cylinder 28 rotatably connected to one end of the rectangular frame 33. One end of the connecting cylinder 28 is fixedly connected to a fixing ring 22. A regulating ring 21 is rotatably clamped to the side of the fixing ring 22 away from the connecting cylinder 28. A hexagonal groove 24 is formed on one side of the regulating ring 21. Six trapezoidal plates 25 are slidably clamped inside the hexagonal groove 24. Six regulating holes 26 are formed inside the fixing ring 22. A positioning post 27 is fixedly connected to the side of the trapezoidal plate 25 away from the regulating ring 21. One end of the positioning post 27 away from the trapezoidal plate 25 is slidably clamped inside the regulating hole 26. The long sides and hypotenuses of the six trapezoidal plates 25 are in contact with each other pairwise. An insertion hole 23 is formed in the middle of the regulating ring 21. The six trapezoidal plates 25 are arranged in a ring on one side of the insertion hole 23. A positioning disk 29 is fixedly connected to the outside of the connecting cylinder 28. A plurality of insertion holes are formed in a ring on one side of the positioning disk 29. A plug rod 30 is slidably connected inside the regulating ring 21. The position of the plug rod 30 corresponds to the position of the insertion hole. One end of the connecting cylinder 28 is fixedly connected to one end of the rotating column 31;

[0036] By setting the fixing component, one end of the camshaft can be fixed, which facilitates the rotating component to drive the camshaft to rotate. At the same time, through the cooperation with the clamping component, the overall stability and firmness of the fixture are enhanced, ensuring the reliability during the detection process. When fixing one end of the camshaft, one end of the camshaft is placed inside the connecting cylinder 28 through the middle of the insertion hole 23. At this time, the regulating ring 21 is manually rotated, causing the six trapezoidal plates 25 to drive the positioning posts 27 to move along the track of the regulating holes 26. At this time, one side of the six trapezoidal plates 25 will approach the middle of the insertion hole 23, thereby causing the six trapezoidal plates 25 to clamp the camshaft, and further fixing one end of the camshaft. At the same time, through the setting of the plug rod 30 and the positioning disk 29, when the six trapezoidal plates 25 clamp one end of the camshaft, the plug rod 30 is passed through the inside of the regulating ring 21 and connected to the insertion hole on one side of the positioning disk 29, thereby fixing the position of the regulating ring 21 and avoiding the problem of loosening when the camshaft is clamped.

[0037] As Figure 1 and Figure 2 As shown in the figure, the linkage component includes a driving wheel 20 fixedly connected to one side of the regulating ring 21. The bottom of the driving wheel 20 is connected to a driven wheel 19 through a belt drive. One side of the driven wheel 19 is fixedly connected to a connecting shaft 18. One end of the connecting shaft 18 away from the driven wheel 19 penetrates through the side wall of the fixing seat 6 and is fixedly connected to one side of the gear 7. A moving frame is rotatably clamped to the outside of the middle of the connecting shaft 18;

[0038] Through the provided linkage component, the clamping component and the fixing component can be operated simultaneously in one step to fix the camshaft, which simplifies the operation steps and improves work efficiency. When adjusting the clamping component and the fixing component to fix the camshaft, when the adjusting ring 21 rotates, the driving wheel 20 will rotate, and at the same time drive the linkage wheel 19 to rotate. At this time, the gear 7 is driven to rotate through the connecting shaft 18, thereby promoting the rotation of the adjusting ring 21, and at the same time driving the clamping component and the fixing component to fix one end and the middle part of the camshaft, thus avoiding the trouble of manual and cumbersome fixing operations.

[0039] As Figures 1 to 6 shown, the outer shape of the extrusion groove 32 is composed of two long grooves and two inclined grooves. The two ends of the two long grooves are respectively communicated with the two ends of the two inclined grooves. A positioning groove 36 is opened at the top of the extrusion cylinder 34. A positioning rod is fixedly connected to the top of one end of the return frame 33. The bottom end of the positioning rod passes through the inside of the return frame 33 and is slidably clamped with the inside of the positioning groove 36. A return spring 38 is fixedly connected inside the extrusion cylinder 34. One end of the return spring 38 is fixedly connected to one end of the rotating column 31. One end of the extrusion cylinder 34 is rotatably clamped with a rotating knob 37. The other end of the return spring 38 is fixedly connected to one end of the rotating knob 37. The position of the abutting baffle 4 corresponds to the position of the rotating knob 37, and the height of the abutting baffle 4 is equal to the height of the rotating knob 37. Three movable blocks 5 are threadedly connected to the outside of the screw rod 2. Moving grooves are opened at the top of the track base 1. The tops of the three movable blocks 5 respectively pass through the inside of the moving grooves and are fixedly connected to the bottom of the fixed seat 6, the bottom of the moving frame, and the bottom of the return frame 33;

[0040] The provided rotating component can trigger the baffle plate 4 to cause the camshaft to rotate automatically, thereby helping to detect the roughness of the camshaft hole comprehensively and from multiple angles, improving the comprehensiveness and accuracy of the detection. After the clamping component and the fixing component fix the camshaft, the measuring needle will contact the top of one end of the camshaft. At this time, start the motor 3 to cause the screw 2 to rotate. Then, due to the effect of the thread, the movable block 5 drives the clamping component, the fixing component, the linkage component, and the camshaft to move for detection simultaneously. When the detection of the top of the camshaft by the measuring needle is completed, the rotary knob 37 just touches the baffle plate 4. At this time, the baffle plate 4 will squeeze the rotary knob 37, causing the rotary knob 37 to drive the extrusion cylinder 34 to move. Then, through the provided extrusion column 35 and the extrusion groove 32, the extrusion column 35 will move from the long groove of the extrusion groove 32 to the inclined groove of the extrusion groove 32. At this time, through the provided positioning groove 36, it is ensured that the extrusion cylinder 34 can only move linearly. At this time, the rotating column 31 will rotate. Then, through the setting that one end of the connecting cylinder 28 is fixedly connected to one end of the rotating column 31, the rotating column 31 will drive the connecting cylinder 28 to rotate, thereby causing the camshaft to rotate. At this time, by starting the motor 3 to drive the screw 2 to reverse, the camshaft is caused to move towards the end away from the baffle plate 4, thereby causing the other side of the camshaft to be detected, and thus achieving the effect of detecting the roughness of the camshaft hole from multiple angles. At the same time, when the rotary knob 37 moves away from the baffle plate 4, the return spring 38 pushes the extrusion cylinder 34 away from the end of the rotating column 31, thereby causing the extrusion column 35 to move back into the long groove of the extrusion groove 32 again, which facilitates the next use.

[0041] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0042] The present invention aims to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A camshaft hole roughness detection fixture, characterized in that: It comprises a track seat (1), one end of the track seat (1) is fixedly connected to a motor (3), the inside of the track seat (1) is rotatably connected to a screw rod (2), the output end of the motor (3) passes through the side wall of the track seat (1) and is fixedly connected to one end of the screw rod (2), and the top of one end of the track seat (1) is slidably connected to a clamping assembly, and the clamping assembly is used to fix the middle part of the camshaft; The top of the track seat (1) is slidably connected with a fixing component, the fixing component is used to fix one end of the camshaft, a linkage component is provided between the fixing component and the clamping component, the linkage component is used to drive the fixing component and the clamping component in one step to fix the middle part and one end of the camshaft; A rotating assembly for rotating the camshaft is provided on one side of the fixed assembly, the rotating assembly comprising a circular frame (33) slidably connected to the top of the track seat (1) and a top stop plate (4) fixedly connected to one end of the track seat (1); the interior of one end of the circular frame (33) is rotatably engaged with a rotating column (31); the interior of the other end of the circular frame (33) is slidably engaged with an extrusion cylinder (34); the interior of one end of the extrusion cylinder (34) is sleeved on the exterior of one end of the rotating column (31); one end of the extrusion cylinder (34) is fixedly connected with an extrusion cylinder (35); an extrusion groove (32) is provided on the exterior of the rotating column (31); one end of the extrusion cylinder (34) passes through the side wall of the extrusion cylinder (34) and is slidably engaged with the interior of the extrusion groove (32).

2. A camshaft hole roughness detection fixture according to claim 1, characterized in that: The clamping assembly comprises a fixed seat (6) slidably connected to the top of the track seat (1), the top of the fixed seat (6) is fixedly connected to a fixed frame (15), the interior of the fixed seat (6) is connected to a gear (7) by an axis rotation, the top and bottom of the gear (7) are respectively meshed and connected to a second rack (9) and a first rack (8), the outside of the second rack (9) and the first rack (8) are respectively slidably clamped in the side walls on both sides of the fixed seat (6), the ends of the second rack (9) and the first rack (8) away from each other are respectively connected to a connecting plate (10) by an axis rotation, the ends of the two connecting plates (10) away from the second rack (9) and the first rack (8) are respectively connected to a clamping rod (12) by an axis rotation, and the end of the clamping rod (12) away from the connecting plate (10) passes through the top of the fixed frame (15) and is fixedly connected to an arc plate (16).

3. A camshaft hole roughness detection fixture according to claim 2, characterized in that: The two sides of the bottom of the fixing frame (15) are respectively fixedly connected with fixing plates (11), and one end of the fixing plate (11) away from the fixing frame (15) is rotatably connected to the middle part of the connecting plate (10) through an axis. The outside of the clamping rod (12) is fixedly connected with a resisting plate (14), and one side of the resisting plate (14) is fixedly connected with a squeezing spring (13), and the squeezing spring (13) is sleeved on the outside of the clamping rod (12), and the other end of the squeezing spring (13) is fixedly connected to one side of the fixing frame (15). The two arc plates (16) are of equal height, and the opposite sides of the two arc plates (16) are respectively rotatably connected with a plurality of pulleys (17) through an axis.

4. A camshaft hole roughness detection fixture according to claim 2, characterized in that: The fixing assembly comprises a connecting tube (28) rotatably connected to one end of the circular frame (33); one end of the connecting tube (28) is fixedly connected to a fixing ring (22); a side of the fixing ring (22) away from the connecting tube (28) is rotatably clamped with an adjusting ring (21); one side of the adjusting ring (21) is provided with a hexagonal groove (24); six trapezoidal plates (25) are slidably clamped inside the hexagonal groove (24); six An adjusting hole (26) is formed, a positioning column (27) is fixedly connected to one side of the trapezoidal plate (25) away from the adjusting ring (21), and one end of the positioning column (27) away from the trapezoidal plate (25) is slidably engaged with the inside of the adjusting hole (26), the long sides and the oblique sides of the six trapezoidal plates (25) are in contact with each other, a plug-in hole (23) is opened in the middle of the adjusting ring (21), and the six trapezoidal plates (25) are arranged in a ring shape on one side of the plug-in hole (23).

5. A camshaft hole roughness detection fixture according to claim 4, characterized in that: The outside of the connecting tube (28) is fixedly connected to a positioning plate (29), one side of the positioning plate (29) is provided with a plurality of insertion holes in an annular shape, the inside of the adjusting ring (21) is slidably connected to an insertion rod (30), the position of the insertion rod (30) corresponds to the position of the insertion hole, and one end of the connecting tube (28) is fixedly connected to one end of the rotating column (31).

6. A camshaft hole roughness detection fixture according to claim 4, characterized in that: The linkage assembly comprises a driving wheel (20) fixedly connected to one side of an adjusting ring (21); the bottom of the driving wheel (20) is connected to a linkage wheel (19) via a belt transmission; one side of the linkage wheel (19) is fixedly connected to a connecting shaft (18); one end of the connecting shaft (18) away from the linkage wheel (19) passes through a side wall of a fixed seat (6) and is fixedly connected to one side of a gear (7); and a movable frame is rotatably engaged with the outer portion of the middle portion of the connecting shaft (18).

7. A camshaft hole roughness detection fixture according to claim 1, characterized in that: The outer shape of the extrusion groove (32) consists of two long grooves and two oblique grooves, and the two ends of the two long grooves are respectively connected to the two ends of the two oblique grooves.

8. The camshaft hole roughness detection fixture according to claim 1, characterized in that: A positioning groove (36) is provided at the top of the extrusion cylinder (34); a positioning rod is fixedly connected to the top of one end of the circular frame (33); the bottom end of the positioning rod passes through the interior of the circular frame (33) and is slidably engaged with the interior of the positioning groove (36); a return spring (38) is fixedly connected to the interior of the extrusion cylinder (34); one end of the return spring (38) is fixedly connected to one end of the rotating column (31); a rotating knob (37) is rotatably engaged with one end of the extrusion cylinder (34); the other end of the return spring (38) is fixedly connected to one end of the rotating knob (37).

9. A camshaft hole roughness detection fixture according to claim 8, characterized in that: The position of the retaining plate (4) corresponds to the position of the rotating knob (37), and the height of the retaining plate (4) is equal to the height of the rotating knob (37).

10. A camshaft hole roughness detection fixture according to claim 6, characterized in that: The external thread of the screw rod (2) is connected to three movable blocks (5), the top of the track seat (1) is provided with a movable groove, and the tops of the three movable blocks (5) respectively penetrate the interior of the movable groove and are respectively fixedly connected to the bottom of the fixed seat (6), the bottom of the movable frame and the bottom of the circular frame (33).

Images