Crankshaft eccentric clamp

Abstract

The utility model discloses a crankshaft eccentric clamp, and relates to the technical field of clamps. A fixed plate and a movable plate are arranged on the supporting plate, an adjusting lead screw is arranged between the fixed plate and the movable plate, an adjusting groove is formed in the upper end of the fixed plate, a sliding plate is arranged in the adjusting groove, V-shaped clamping grooves are formed in the upper end of the sliding plate and the upper end of the movable plate, pressing mechanisms are arranged at the upper end of the sliding plate and the upper end of the movable plate, and V-shaped pressing frames are arranged in the pressing mechanisms. The pressing frame is located above the clamping groove. The position of the crankshaft is limited through cooperation of the V-shaped pressing frame and the V-shaped clamping groove, meanwhile, the first rotating rod and the second rotating rod are arranged on the inner side wall of the clamping groove and the inner side wall of the pressing frame correspondingly, it is guaranteed that the crankshaft rotates smoothly while the position of the crankshaft is limited, it is guaranteed that crankshaft machining is conducted smoothly, and machining efficiency is improved. And the crankshaft is effectively fixed through the arrangement of the clamping structures on the left side and the right side, vibration and deviation in the machining process are reduced, and therefore the machining precision and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to an eccentric clamp for a crankshaft. Background Art

[0002] An eccentric crankshaft is a special crankshaft design characterized by a misalignment between the main journal and the connecting rod journal, resulting in a certain eccentricity. This design offers a range of advantages in engines, such as increased cylinder charging efficiency, improved combustion, and increased engine output. However, eccentric crankshafts also increase the complexity of machining and assembly, requiring precise manufacturing processes and strict quality control to ensure engine performance and reliability. In practice, eccentric crankshafts are widely used in various high-performance engines to meet stringent requirements for both power and economy.

[0003] During crankshaft machining, the high centrifugal force generated by the rotation of the triangular chuck can easily cause instability during machining, impacting machining quality and efficiency. Specifically, centrifugal force can cause bending and vibration in the workpiece during rotation, affecting machining accuracy and surface quality.

[0004] In order to ensure the processing quality of the product, this solution proposes a crankshaft eccentric fixture to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an eccentric crankshaft clamp, which solves the technical problems raised in the background technology.

[0006] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0007] The pressing mechanism comprises a pressing frame, which is located directly above the clamping groove. The clamping groove and the pressing frame are both V-shaped, and the opening of the pressing frame is arranged downward.

[0008] Preferably, the inner wall of the clamping groove is provided with a plurality of mounting grooves 1, the inner side of the mounting groove 1 is provided with a rotating rod 1, and the left and right ends of the rotating rod 1 are respectively rotatably connected to the left and right inner walls of the mounting groove 1, and the inner wall of the clamping frame is provided with a plurality of mounting grooves 2, the inner side of the mounting groove 2 is provided with a rotating rod 2, and the left and right ends of the rotating rod 2 are respectively rotatably connected to the left and right inner walls of the mounting groove 2, and a crankshaft is provided above the support plate, and the left and right ends of the crankshaft are respectively located between the two groups of clamping grooves and the clamping frame on the left and right sides.

[0009] Preferably, the clamping mechanism also includes a clamping outer frame, which is U-shaped, and a lifting plate is provided on the inner side of the clamping frame. The front and rear ends of the lifting plate are respectively slidably connected to the front and rear inner walls of the clamping outer frame, and the clamping frame is fixed to the lower end of the lifting plate. A clamping screw is provided above the clamping outer frame, and the lower end of the clamping screw passes through the upper side wall of the clamping outer frame and is rotatably connected to the upper end of the lifting plate. The clamping screw is threadedly connected to the upper side wall of the clamping outer frame.

[0010] Preferably, a driving chuck is provided on the right side of the support plate, and the driving chuck is connected to the left end of the crankshaft.

[0011] Preferably, a sliding groove is provided on the lower inner wall of the adjusting groove, a lifting screw is slidably connected in the sliding groove, the upper end of the lifting screw is fixedly connected to the lower end of the sliding plate, a worm gear is threadedly connected to the lifting screw gear, the worm gear is rotatably connected to the lower inner wall of the adjusting groove, the rear inner wall of the adjusting groove is rotatably connected to the worm, the front end of the worm gear passes through the front side wall of the adjusting groove, and is fixedly connected to handle 2, the worm gear is adapted to the worm gear, and the worm gear is rotatably connected to the front side wall of the adjusting groove.

[0012] Preferably, a locking tube is threadedly connected to the adjusting screw.

[0013] Compared with the related art, the crankshaft eccentric clamp provided by the present invention has the following beneficial effects:

[0014] 1. A V-shaped pressing frame is provided in the clamping mechanism of the device. When in use, the pressing screw is used to push the pressing frame downward, and the position of the crankshaft is limited by the cooperation of the V-shaped pressing frame and the V-shaped clamping groove. At the same time, a rotating rod 1 and a rotating rod 2 are respectively provided on the inner side walls of the clamping groove and the pressing frame. While limiting the position of the crankshaft, it can ensure the smooth rotation of the crankshaft. The setting of the clamping structures on the left and right sides effectively fixes the crankshaft, reduces vibration and deviation during processing, and thus improves the processing accuracy and stability.

[0015] 2. A sliding plate is provided inside the adjusting groove in the fixed plate, and a worm gear and a worm are provided at the lower end of the sliding plate. The height of the sliding plate can be adjusted by using the cooperation of the worm gear and the worm gear. At the same time, the clamping groove and the clamping frame are both arranged in a V-shaped structure to ensure that the device can effectively fix the crankshaft. An adjusting screw is provided between the fixed plate and the movable plate to adjust the distance between the fixed plate and the movable plate, ensuring that the device can limit the position of crankshafts of different sizes, greatly improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention in a processing state;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the crankshaft in a fixed state of the present invention;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the fixed plate position of the utility model;

[0020] Figure 5 For the utility model Figure 4 Enlarged view of point A in the middle;

[0021] Figure 6 This is a schematic diagram of the cross-sectional three-dimensional structure of the fixing plate of the present invention;

[0022] Figure 7 This is a schematic diagram of the three-dimensional structure of the movable plate of the present utility model;

[0023] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the compression frame of the present invention.

[0024] In the figure: 1. Support plate; 2. Drive chuck; 3. Crankshaft; 4. Fixed plate; 5. Moving plate; 6. Adjusting screw; 7. Auxiliary plate; 8. Handle 1; 9. Locking tube; 10. Clamping mechanism; 11. Adjusting slot; 12. Sliding plate; 13. Clamping slot; 14. Mounting slot 1; 15. Rotating rod 1; 16. Sliding slot; 17. Lifting screw; 18. Worm gear; 19. Worm; 20. Handle 2; 21. Clamping outer frame; 22. Lifting plate; 23. Clamping frame; 24. Clamping screw; 25. Mounting slot 2; 26. Rotating rod 2. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example:

[0027] See also Figures 1-8 The utility model provides a technical solution: a crankshaft eccentric clamp, including a support plate 1, the left end of the upper surface of the support plate 1 is fixedly connected to a fixed plate 4, the right end of the upper surface of the support plate 1 is fixedly connected to an auxiliary plate 7, the upper end of the support plate 1 is slidably connected to a movable plate 5, the right end of the fixed plate 4 is rotatably connected to an adjusting screw rod 6, the right end of the adjusting screw rod 6 sequentially passes through the movable plate 5 and the auxiliary plate 7, and is fixedly connected to a handle 8, the auxiliary plate 7 is rotatably connected to the adjusting screw rod 6, the movable plate 5 is threadedly connected to the adjusting screw rod 6, and the upper end of the fixed plate 4 An adjusting groove 11 is provided at the end, and a sliding plate 12 is provided inside the adjusting groove 11. The front and rear ends of the sliding plate 12 are respectively slidably connected to the front and rear inner walls of the adjusting groove 11. A clamping groove 13 is provided at the upper end of the sliding plate 12 and the movable plate 5. A clamping mechanism 10 is provided at the upper end of the fixed plate 4 and the movable plate 5. An adjusting screw 6 is provided between the fixed plate 4 and the movable plate 5, thereby realizing the adjustment of the distance between the fixed plate 4 and the movable plate 5, thereby ensuring that the device can limit the position of crankshafts 3 of different sizes, greatly improving the adaptability of the device;

[0028] The clamping mechanism 10 includes a clamping frame 23, which is located just above the clamping groove 13. Both the clamping groove 13 and the clamping frame 23 are V-shaped, and the opening of the clamping frame 23 is set downward; the inner wall of the clamping groove 13 is provided with a plurality of mounting grooves 14, and a rotating rod 15 is provided inside the mounting groove 14. The left and right ends of the rotating rod 15 are respectively rotatably connected to the left and right inner walls of the mounting groove 14, and a plurality of mounting grooves 25 25 are provided on the inner side wall of the clamping frame 23. A rotating rod 26 is provided inside the mounting groove 25, and the left and right ends of the rotating rod 26 are respectively rotatably connected to the left and right inner walls of the mounting groove 25. A crankshaft 3 is provided above the support plate 1, and the left and right ends of the crankshaft 3 are respectively located between the two groups of clamping grooves 13 and the clamping frame 23 on the left and right sides;

[0029] The pressing mechanism 10 also includes a pressing outer frame 21, which is U-shaped. A lifting plate 22 is provided on the inner side of the pressing frame 23. The front and rear ends of the lifting plate 22 are respectively slidably connected to the front and rear inner walls of the pressing outer frame 21. The pressing frame 23 is fixed to the lower end of the lifting plate 22. A pressing screw 24 is provided above the pressing outer frame 21. The lower end of the pressing screw 24 passes through the upper side wall of the pressing outer frame 21 and is rotatably connected to the upper end of the lifting plate 22. The pressing screw 24 is connected to the pressing outer frame 21. The upper side wall of the outer frame 21 is threadedly connected. During the crankshaft 3 processing, the pressing screw 24 is rotated to drive the lifting plate 22 and the pressing frame 23 to move downward. The V-shaped pressing frame 23 cooperates with the V-shaped clamping groove 13 to limit the position of the crankshaft 3. The inner side walls of the clamping groove 13 and the pressing frame 23 are respectively provided with a rotating rod 15 and a rotating rod 26, which ensure that the position of the crankshaft 3 is limited while ensuring the smooth rotation of the crankshaft 3, thereby ensuring the smooth processing of the crankshaft 3.

[0030] A driving chuck 2 is provided on the right side of the support plate 1. The driving chuck 2 is connected to the left end of the crankshaft 3. When in use, the driving chuck 2 drives the crankshaft 3 to rotate, providing rotational power for the machining of the crankshaft 3.

[0031] A sliding groove 16 is provided on the lower inner wall of the adjusting groove 11, and a lifting screw 17 is slidably connected in the sliding groove 16. The upper end of the lifting screw 17 is fixedly connected to the lower end of the sliding plate 12, and a worm gear 18 is threadedly connected to the lifting screw 17. The worm gear 18 is rotatably connected to the lower inner wall of the adjusting groove 11, and a worm 19 is rotatably connected to the rear inner wall of the adjusting groove 11. The front end of the worm 19 passes through the front side wall of the adjusting groove 11 and is fixedly connected to a handle 20. The worm gear 18 is adapted to the worm 19, and the worm 19 is rotatably connected to the front side wall of the adjusting groove 11. The height of the sliding plate 12 is adjusted by the cooperation of the worm gear 18 and the worm 19, so as to ensure that the device can effectively fix the crankshaft 3;

[0032] A locking tube 9 is threadedly connected to the adjusting screw 6. When the position of the movable plate 5 is adjusted and fixed, the locking tube 9 is rotated to make the right end of the rotating locking tube 9 abut against the left end of the movable plate 5, thereby ensuring that the movable plate 5 is firm during the processing of the crankshaft 3.

[0033] Working principle: When in use, turn the handle 1 8 according to the size of the crankshaft 3 required, use the handle 1 8 to drive the adjusting screw 6 to rotate, adjust the distance between the movable plate 5 and the fixed plate 4, place the crankshaft 3 between the fixed plate 4 and the movable plate 5, and drive the worm 19 to rotate by turning the handle 2 20. Use the worm 19 and the worm wheel 18 to adjust the height of the clamping groove 13 at the upper end of the sliding plate 12, place the crankshaft 3 above the left and right clamping grooves 13, turn the pressing screw 24, and drive the lifting plate 22 The device moves downward with the clamping frame 23, and the V-shaped clamping frame 23 cooperates with the V-shaped clamping groove 13 to limit the position of the crankshaft 3. At the same time, a rotating rod 15 and a rotating rod 26 are respectively provided on the inner side walls of the clamping groove 13 and the clamping frame 23 to ensure that the crankshaft 3 can be smoothly rotated while limiting the position of the crankshaft 3, ensuring the smooth processing of the crankshaft 3. The left and right clamping structures are set to effectively fix the crankshaft 3, reducing vibration and offset during processing, thereby improving processing accuracy and stability. The device uses a worm gear 18 and a worm 19 to adjust the height of the sliding plate 12. At the same time, the clamping groove 13 and the clamping frame 23 are both set with a V-shaped structure to ensure that the device can effectively fix the crankshaft 3. An adjusting screw 6 is provided between the fixed plate 4 and the movable plate 5 to adjust the distance between the fixed plate 4 and the movable plate 5, thereby ensuring that the device can limit the position of crankshafts 3 of different sizes, greatly improving the adaptability of the device.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crankshaft eccentric clamp, comprising a support plate (1), characterized in that: The left end of the upper surface of the support plate (1) is fixedly connected to a fixed plate (4), the right end of the upper surface of the support plate (1) is fixedly connected to an auxiliary plate (7), the upper end of the support plate (1) is slidably connected to a movable plate (5), the right end of the fixed plate (4) is rotatably connected to an adjusting screw rod (6), the right end of the adjusting screw rod (6) sequentially passes through the movable plate (5) and the auxiliary plate (7), and is fixedly connected to a handle (8), the auxiliary plate (7) is rotatably connected to the adjusting screw rod (6), The movable plate (5) is threadedly connected to the adjusting screw rod (6), the upper end of the fixed plate (4) is provided with an adjusting groove (11), the inner side of the adjusting groove (11) is provided with a sliding plate (12), the front and rear ends of the sliding plate (12) are respectively slidably connected to the front and rear inner walls of the adjusting groove (11), the upper ends of the sliding plate (12) and the movable plate (5) are provided with a clamping groove (13), and the upper ends of the fixed plate (4) and the movable plate (5) are provided with a clamping mechanism (10); The clamping mechanism (10) comprises a clamping frame (23), the clamping frame (23) being located directly above the clamping groove (13), the clamping groove (13) and the clamping frame (23) both being V-shaped, and the opening of the clamping frame (23) being arranged downward.

2. The eccentric crankshaft clamp according to claim 1, characterized in that: The inner wall of the clamping groove (13) is provided with a plurality of mounting grooves (14), and a rotating rod (15) is provided inside the mounting groove (14). The left and right ends of the rotating rod (15) are respectively rotatably connected to the left and right inner walls of the mounting groove (14). The inner wall of the pressing frame (23) is provided with a plurality of mounting grooves (25), and a rotating rod (26) is provided inside the mounting groove (25). The left and right ends of the rotating rod (26) are respectively rotatably connected to the left and right inner walls of the mounting groove (25). A crankshaft (3) is provided above the support plate (1), and the left and right ends of the crankshaft (3) are respectively located between the two groups of clamping grooves (13) and the pressing frame (23) on the left and right sides.

3. The eccentric crankshaft clamp according to claim 1, characterized in that: The clamping mechanism (10) further includes a clamping outer frame (21), the clamping outer frame (21) is U-shaped, a lifting plate (22) is provided on the inner side of the clamping frame (23), the front and rear ends of the lifting plate (22) are respectively slidably connected to the front and rear inner walls of the clamping outer frame (21), the clamping frame (23) is fixed to the lower end of the lifting plate (22), a clamping screw (24) is provided above the clamping outer frame (21), the lower end of the clamping screw (24) passes through the upper side wall of the clamping outer frame (21), and is rotatably connected to the upper end of the lifting plate (22), and the clamping screw (24) is threadedly connected to the upper side wall of the clamping outer frame (21).

4. The crankshaft eccentric clamp according to claim 2, characterized in that: A driving chuck (2) is provided on the right side of the support plate (1), and the driving chuck (2) is connected to the left end of the crankshaft (3).

5. The crankshaft eccentric clamp according to claim 1, characterized in that: A sliding groove (16) is provided on the lower inner wall of the adjusting groove (11), and a lifting screw (17) is slidably connected in the sliding groove (16). The upper end of the lifting screw (17) is fixedly connected to the lower end of the sliding plate (12). A worm wheel (18) is threadedly connected to the lifting screw (17), and the worm wheel (18) is rotatably connected to the lower inner wall of the adjusting groove (11). A worm (19) is rotatably connected to the rear inner wall of the adjusting groove (11). The front end of the worm (19) passes through the front wall of the adjusting groove (11) and is fixedly connected to a handle 2 (20). The worm wheel (18) is adapted to the worm (19), and the worm (19) is rotatably connected to the front wall of the adjusting groove (11).

6. The crankshaft eccentric clamp according to claim 1, characterized in that: A locking tube (9) is threadedly connected to the adjusting screw rod (6).

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