Rotatable adjusting positioning clamp for crankshaft machining

Abstract

The utility model discloses a rotatable adjusting positioning clamp for crankshaft machining, which comprises a concave frame, and a clamping component is arranged on one side of the inner wall of the concave frame; the clamping assembly comprises a mounting block, the outer wall of the curved bar is fixedly connected with a second auxiliary block, the bottom of the inner wall of the mounting block is fixedly connected with a first auxiliary block, one end of the hydraulic rod is fixedly connected with a protruding block, and one end of the protruding block is rotationally connected with the inner wall of the first auxiliary block. A sliding plate is connected to the inner wall of the sliding groove in a sliding mode, a distance adaptation rod is rotationally connected between the inner walls of the third auxiliary blocks, and one end of the distance adaptation rod is rotationally connected with one end of a bent lever. According to the positioning clamp for crankshaft machining, the hydraulic rod is started to push the bent lever to rotate, the bent lever pushes the sliding plate to move on the sliding groove through the distance adaptive rod, and then the movable clamping block is driven to get close to the fixed clamping block to clamp and fix a pin shaft of a crankshaft.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft machining technology, specifically a rotatable adjustable positioning fixture for crankshaft machining. Background Technology

[0002] The crankshaft is the most important component in an engine. It bears the force transmitted from the connecting rod and converts it into torque, which is then output through the crankshaft to drive other accessories on the engine. The crankshaft is subjected to the combined effects of centrifugal force from the rotating mass, periodically changing gas inertial force, and reciprocating inertial force, resulting in bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the journal surfaces must be wear-resistant, operate evenly, and have good balance.

[0003] The patent publication number "CN220637586U" discloses a "rotatable adjustable positioning fixture for crankshaft machining," which includes a mounting plate, a controller, a rotating mechanism, and a clamping mechanism. The rotating mechanism includes a turntable and a drive assembly. The clamping mechanism includes a fixed clamping block, a movable clamping block, a telescopic assembly, and a transmission assembly. The fixed clamping block is located at one end of the top of the turntable, and a groove is provided at the other end of the top of the turntable. The movable clamping block is slidably disposed inside the groove via a slider. Both the fixed clamping block and the movable clamping block are provided with trapezoidal grooves. The telescopic assembly is located on the outer wall of the turntable, and the transmission assembly is located between the movable clamping block and the telescopic assembly. The drive assembly and the telescopic assembly are electrically connected to the controller. This utility model relates to a rotatable adjustable positioning fixture for crankshaft machining, which can prevent the movable clamping block from collapsing the hollow part of the pin due to excessive speed and force during clamping. While achieving clamping and fixing, it effectively protects the pin and improves the clamping effect.

[0004] The electric push rod of the device is inserted into one end of the guide rail, and its output end extends into the guide rail and is fixed to the rack and gear. The rack and gear mesh with each other to make the connecting rod rotate so that the movable clamping block can be clamped. However, the rack and gear is a transmission mechanism. When the electric push rod applies pressure to the rack, the teeth of the meshing part of the gear and rack will bear a large pressure and wear severely. After long-term use, the teeth are prone to breakage, which will damage the equipment.

[0005] To address these issues, this invention provides a rotatable adjustable positioning fixture for crankshaft machining. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a rotatable adjustable positioning fixture for crankshaft machining, which solves the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rotatable adjustable positioning fixture for crankshaft machining, comprising a concave frame, a clamping assembly on one side of the inner wall of the concave frame; a flipping adjustment assembly on one side of the concave frame; the clamping assembly comprising a mounting block, a crank rod rotatably connected between the inner walls of the mounting block, a second auxiliary block fixedly connected to the outer wall of the crank rod, a first auxiliary block fixedly connected to the bottom of the inner wall of the mounting block; the clamping assembly further comprising a hydraulic rod, the movable end of the hydraulic rod rotatably connected to the inner wall of the second auxiliary block, a protruding block fixedly connected to one end of the hydraulic rod, one end of the protruding block rotatably connected to the inner wall of the first auxiliary block; a sliding groove is provided on the top of the mounting block, a sliding plate is slidably connected to the inner wall of the sliding groove, a third auxiliary block is fixedly connected to the bottom of the sliding plate, a distance adapter rod rotatably connected between the inner walls of the third auxiliary block, one end of the distance adapter rod rotatably connected to one end of the crank rod.

[0008] Furthermore, a fixed clamping block is fixedly connected to the top of the mounting block, and a movable clamping block is fixedly connected to the top of the sliding plate.

[0009] The above technical solution is used to clamp one end of the crankshaft.

[0010] Furthermore, the two sides of the slide are fixedly connected with ribs, and the inside of the mounting block is provided with a limiting groove, and the ribs are slidably connected to the inner wall of the limiting groove.

[0011] The above technical solution is used to limit the movement of the skateboard.

[0012] Furthermore, the flipping adjustment assembly includes a docking plate, which is rotatably connected to one side of the inner wall of the concave frame, and the mounting block is fixedly connected between the two docking plates.

[0013] The above technical solution is used to install other important components.

[0014] Furthermore, the tilting adjustment assembly also includes a driven pulley, the shaft of which is fixedly connected to one side of the mating disc. The tilting adjustment assembly also includes a driving pulley, and a transmission belt is wound between the driving pulley and the driven pulley.

[0015] The above technical solution is used for power transmission.

[0016] Furthermore, the tilting adjustment assembly also includes a reducer, with the shaft of the drive pulley fixedly connected to the output shaft of the reducer. The tilting adjustment assembly also includes a servo motor, with the output shaft of the servo motor fixedly connected to the input shaft of the reducer.

[0017] By adopting the above technical solution, power is provided to ultimately drive the docking plate to rotate.

[0018] Beneficial effects

[0019] This invention provides a rotatable adjustable positioning fixture for crankshaft machining. Compared with the prior art, it has the following advantages:

[0020] 1. This crankshaft machining rotatable adjustable positioning fixture, by activating the hydraulic rod, pushes the crankshaft to rotate. The crankshaft then pushes the slide plate on the slide groove through the distance adapter rod, thereby driving the moving clamping block to approach the fixed clamping block to clamp and fix the crankshaft pin. The distance adapter rod is used to adapt to the distance changes between the crankshaft and the third auxiliary block. The crankshaft, the hydraulic rod and the bottom of the inner wall of the mounting block form a triangular structure, and the rotation of the first auxiliary block and the second auxiliary block is used to adapt to the angle changes of each inner angle of the triangle. The rib and the limiting groove can restrict the slide plate to prevent the slide plate from slipping.

[0021] 2. This crankshaft machining rotatable adjustable positioning fixture can amplify torque by starting a servo motor and passing it through a reducer, thereby driving the drive pulley to rotate. The drive pulley drives the driven pulley to rotate through a transmission belt, and the driven pulley drives the mating disc to rotate, thus realizing the angle adjustment of the entire clamping assembly. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a perspective view of the external structure of this utility model;

[0024] Figure 2 This is a partial structural side view of the present invention;

[0025] Figure 3 This is an enlarged view of the structure at point A of this utility model;

[0026] Figure 4 This is a structural diagram of the internal structure of the mounting block of this utility model;

[0027] Figure 5 This is a partial structural cross-sectional view of this utility model.

[0028] In the diagram: 1. Concave frame; 2. Clamping assembly; 21. Mounting block; 22. Fixed clamping block; 23. Slide groove; 24. Limiting groove; 25. Slide plate; 26. Moving clamping block; 27. Rib; 28. First auxiliary block; 29. ​​Protruding block; 210. Hydraulic rod; 211. Curved rod; 212. Second auxiliary block; 213. Third auxiliary block; 214. Distance adapter rod; 3. Tilting adjustment assembly; 31. Connecting plate; 32. Driven pulley; 33. Transmission belt; 34. Driving pulley; 35. Reducer; 36. Servo motor. Detailed Implementation

[0029] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0030] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] Reference Figures 1 to 5This application provides a rotatable adjustable positioning fixture for crankshaft machining, including a concave frame 1, a clamping assembly 2 disposed on one side of the inner wall of the concave frame 1; a flipping adjustment assembly 3 disposed on one side of the concave frame 1; the clamping assembly 2 includes a mounting block 21, a crank rod 211 rotatably connected between the inner walls of the mounting block 21, a second auxiliary block 212 fixedly connected to the outer wall of the crank rod 211, and a first auxiliary block 28 fixedly connected to the bottom of the inner wall of the mounting block 21; the clamping assembly 2 also includes a hydraulic rod 210, the hydraulic rod 210 being movable... The mounting block 21 is rotatably connected to the inner wall of the second auxiliary block 212. One end of the hydraulic rod 210 is fixedly connected to a protrusion 29, and one end of the protrusion 29 is rotatably connected to the inner wall of the first auxiliary block 28. The top of the mounting block 21 has a sliding groove 23, and the inner wall of the sliding groove 23 is slidably connected to a sliding plate 25. The bottom of the sliding plate 25 is fixedly connected to a third auxiliary block 213, and the inner walls of the third auxiliary block 213 are rotatably connected to a distance adapter rod 214. One end of the distance adapter rod 214 is rotatably connected to one end of the crank rod 211. The top of the mounting block 21 is fixedly connected to a fixed clamping block 22, and the top of the sliding plate 25 is fixedly connected to a movable clamping block 26. Ribs 27 are fixedly connected to both sides of the sliding plate 25. The interior of the mounting block 21 has a limit groove 24, and the ribs 27 are slidably connected to the inner wall of the limit groove 24.

[0032] In specific implementation: by activating the hydraulic rod 210, the crank rod 211 is driven to rotate. The crank rod 211 then pushes the slide plate 25 to move on the slide groove 23 through the distance adaptation rod 214, thereby driving the moving clamping block 26 to approach the fixed clamping block 22 to clamp and fix the crankshaft pin. The distance adaptation rod 214 is used to adapt to the distance change between the crank rod 211 and the third auxiliary block 213. The crank rod 211, the hydraulic rod 210 and the bottom of the inner wall of the mounting block 21 form a triangular structure, and the rotation of the first auxiliary block 28 and the second auxiliary block 212 is used to adapt to the angle change of each inner angle of the triangle. The rib 27, in conjunction with the limiting groove 24, can restrict the slide plate 25 to prevent it from slipping off.

[0033] Reference Figures 1 to 5 In one aspect of this embodiment, the tilting adjustment assembly 3 includes a mating plate 31, which is rotatably connected to one side of the inner wall of the concave frame 1, and a mounting block 21 is fixedly connected between the two mating plates 31. The tilting adjustment assembly 3 also includes a driven pulley 32, the shaft of which is fixedly connected to one side of the mating plate 31. The tilting adjustment assembly 3 also includes a driving pulley 34, with a transmission belt 33 wound between the driving pulley 34 and the driven pulley 32. The tilting adjustment assembly 3 also includes a reducer 35, the shaft of which is fixedly connected to the output shaft of the reducer 35. The tilting adjustment assembly 3 also includes a servo motor 36, the output shaft of which is fixedly connected to the input shaft of the reducer 35.

[0034] In practice: by starting the servo motor 36, the torque can be amplified through the reducer 35, thereby driving the drive pulley 34 to rotate. The drive pulley 34 drives the driven pulley 32 to rotate through the transmission belt 33. The driven pulley 32 then drives the mating plate 31 to rotate, thereby realizing the angle adjustment of the entire clamping assembly 2.

[0035] All electrical equipment in this solution are powered by external power supplies.

[0036] Working principle: By activating the hydraulic rod 210, the crank rod 211 is driven to rotate. The crank rod 211 then pushes the slide plate 25 to move on the slide groove 23 through the distance adapter rod 214, thereby driving the moving clamping block 26 to approach the fixed clamping block 22 to clamp and fix the crankshaft pin. The distance adapter rod 214 is used to adapt to the distance changes between the crank rod 211 and the third auxiliary block 213. The crank rod 211, the hydraulic rod 210 and the bottom of the inner wall of the mounting block 21 form a triangular structure. The rotation of the first auxiliary block 28 and the second auxiliary block 212 is used to adapt to the angle changes of each inner angle of the triangle. The rib 27 and the limiting groove 24 can restrict the slide plate 25 to prevent the slide plate 25 from slipping. By activating the servo motor 36, the torque can be amplified through the reducer 35, thereby driving the drive pulley 34 to rotate. The drive pulley 34 drives the driven pulley 32 to rotate through the transmission belt 33. The driven pulley 32 drives the docking plate 31 to rotate, thereby realizing the angle adjustment of the entire clamping assembly 2.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotatable adjustable positioning fixture for crankshaft machining, comprising a concave frame (1), characterized in that: A clamping assembly (2) is provided on one side of the inner wall of the concave frame (1); a flipping adjustment assembly (3) is provided on one side of the concave frame (1); the clamping assembly (2) includes a mounting block (21), a crank rod (211) is rotatably connected between the inner walls of the mounting block (21), a second auxiliary block (212) is fixedly connected to the outer wall of the crank rod (211), a first auxiliary block (28) is fixedly connected to the bottom of the inner wall of the mounting block (21), and the clamping assembly (2) also includes a hydraulic rod (210), the movable end of the hydraulic rod (210) is connected to the inner wall of the second auxiliary block (212). The hydraulic rod (210) is rotatably connected to the inner wall of the first auxiliary block (28). The top of the mounting block (21) is provided with a sliding groove (23). The inner wall of the sliding groove (23) is slidably connected to a sliding plate (25). The bottom of the sliding plate (25) is fixedly connected to a third auxiliary block (213). The inner walls of the third auxiliary block (213) are rotatably connected to a distance adapter rod (214). One end of the distance adapter rod (214) is rotatably connected to one end of the crank rod (211).

2. The rotatable adjustable positioning fixture for crankshaft machining according to claim 1, characterized in that: The top of the mounting block (21) is fixedly connected to a fixed clamping block (22), and the top of the sliding plate (25) is fixedly connected to a movable clamping block (26).

3. The rotatable adjustable positioning fixture for crankshaft machining according to claim 1, characterized in that: The two sides of the slide plate (25) are fixedly connected with ribs (27), and the mounting block (21) has a limiting groove (24) inside. The ribs (27) are slidably connected to the inner wall of the limiting groove (24).

4. The rotatable adjustable positioning fixture for crankshaft machining according to claim 1, characterized in that: The flip adjustment assembly (3) includes a docking plate (31), which is rotatably connected to one side of the inner wall of the concave frame (1), and the mounting block (21) is fixedly connected between the two docking plates (31).

5. The rotatable adjustable positioning fixture for crankshaft machining according to claim 1, characterized in that: The flip adjustment assembly (3) also includes a driven pulley (32), the shaft of which is fixedly connected to one side of the docking plate (31). The flip adjustment assembly (3) also includes a driving pulley (34), and a transmission belt (33) is wound between the driving pulley (34) and the driven pulley (32).

6. The rotatable adjustable positioning fixture for crankshaft machining according to claim 1, characterized in that: The tilt adjustment assembly (3) also includes a reducer (35), the shaft of the drive pulley (34) is fixedly connected to the output shaft of the reducer (35), and the tilt adjustment assembly (3) also includes a servo motor (36), the output shaft of the servo motor (36) is fixedly connected to the input shaft of the reducer (35).

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