A posture adjusting mechanism for crankshaft blank polishing

Abstract

The application relates to the technical field of crankshaft machining, and particularly discloses a posture adjusting mechanism for polishing a crankshaft blank, which comprises a base, a rotating table and two supporting seats, the rotating table is rotatably connected to the base in the vertical direction through a bearing, and a locking assembly for locking the position of the rotating table is arranged on the base; the two supporting seats are arranged on the two sides of the rotating table, a rotating cylinder is transversely arranged on each supporting seat, the rotating cylinder is rotatably connected to the supporting seat around the axis of the rotating cylinder, and a fixing assembly for fixing the crankshaft is arranged on the rotating cylinder; and a rotating assembly for driving the rotating cylinder to rotate is arranged on the supporting seat. The application has the effect of improving the problems that the disassembly and assembly of the crankshaft blank need to be repeatedly carried out during polishing, the operation is complicated, and the use is inconvenient.

Description

Technical Field

[0001] This application relates to the field of crankshaft machining technology, and in particular to a posture adjustment mechanism for polishing crankshaft blanks. Background Technology

[0002] The crankshaft is one of the most important components of 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 bending and torsional loads due to the combined effects of the centrifugal force of the rotating mass, the periodically changing gas inertial force, and the reciprocating inertial force.

[0003] The crankshaft blank needs to be polished during the processing. The common method is to first clamp and fix the crankshaft blank with a fixing mechanism, and then the worker uses a polishing machine to polish its outer surface.

[0004] The aforementioned technologies require constant adjustment of the crankshaft blank's orientation during polishing to ensure comprehensive, thorough polishing. This process necessitates repeated disassembly and assembly of the crankshaft blank, making it cumbersome and inconvenient to use. Utility Model Content

[0005] To address the problem of cumbersome and inconvenient operation caused by the repeated disassembly and assembly of crankshaft blanks during polishing, this application provides a posture adjustment mechanism for crankshaft blank polishing.

[0006] The technical solution of the attitude adjustment mechanism for polishing crankshaft blanks provided in this application is as follows:

[0007] A crankshaft blank polishing posture adjustment mechanism includes a base, a rotating platform, and two support seats. The rotating platform is rotatably connected to the base about a vertical axis, and the base is provided with a locking component for locking the position of the rotating platform. The two support seats are located on both sides of the rotating platform. A rotating cylinder is inserted into the support seat along a horizontal direction. The rotating cylinder is rotatably connected to the support seat about its own axis, and the rotating cylinder is provided with a fixing component for fixing the crankshaft. The support seats are provided with a rotating component for driving the rotating cylinder to rotate.

[0008] By adopting the above technical solution, the crankshaft blank's posture can be flexibly adjusted during the polishing process, eliminating the need for repeated disassembly and reassembly. Specific benefits include: the cooperation between the base and the rotating platform, along with the locking components, allows the crankshaft blank to rotate vertically and be stably locked at the desired angle, thus meeting polishing requirements from different angles; the rotating cylinder and its fixing components on the support base can firmly clamp the crankshaft blank and support its rotation around its own axis, further improving the flexibility and precision of the polishing operation; and the introduction of the rotating component provides a convenient and reliable power source for the cylinder's rotation, enhancing the overall ease of operation of the device.

[0009] Optionally, the fixing component includes a pressing block and an adjusting rod. The pressing block is slidably locked inside the rotating cylinder along the axial direction of the rotating cylinder. The adjusting rod passes through the rotating cylinder along the axial direction of the rotating cylinder and is threadedly connected to the rotating cylinder. The adjusting rod is rotatably connected to the pressing block around its own axial direction. The pressing blocks on the two rotating cylinders have conical grooves on their sides that are close to each other.

[0010] By employing the above technical solution, the cooperation between the pressure block and the adjusting rod enables reliable fixing of the crankshaft. The threaded connection between the adjusting rod and the rotating drum, as well as its rotatable connection with the pressure block, allows the adjusting rod to push the pressure block axially along the rotating drum during rotation, thus accommodating crankshafts of different sizes and providing a stable clamping force. The conical groove design on the two pressure blocks further enhances the positioning effect of the crankshaft, ensuring that the crankshaft maintains a stable posture during polishing and avoiding positional displacement caused by vibration or external forces, thereby improving polishing accuracy and quality.

[0011] Optionally, a high-strength wear-resistant pad is provided inside the conical groove.

[0012] By adopting the above technical solution, the setting of high-strength wear-resistant shims can effectively reduce the wear between the conical groove and the crankshaft, extend the service life of the fixed components, and ensure that the crankshaft maintains a stable fixed state during the polishing process.

[0013] Optionally, the rotating assembly includes a worm gear, a worm, and a handwheel. The worm gear is coaxially connected to the rotating drum, the worm is rotatably connected to the support base, the worm meshes with the worm gear, and the handwheel is connected to the worm.

[0014] By adopting the above technical solution, the worm gear is coaxially connected to the rotating drum, the worm is rotatably connected to the support base and meshes with the worm gear, and the handwheel is connected to the worm, thereby realizing the function of manually driving the rotating drum to rotate. This design allows the operator to easily adjust the crankshaft's attitude by turning the handwheel, improving the flexibility and accuracy of attitude adjustment. At the same time, the worm gear transmission structure has self-locking performance, which can maintain the crankshaft's attitude stability to a certain extent and reduce attitude deviation caused by accidental vibration.

[0015] Optionally, the locking assembly includes a rod and a return spring. The rod is vertically inserted into the rotating platform, and the base has multiple positioning holes evenly distributed around the rotation axis of the rotating platform. One end of the return spring is connected to the rod, and the other end of the return spring is connected to the rotating platform. When the rod is aligned with the positioning hole, the return spring tends to insert the rod into the positioning hole.

[0016] By adopting the above technical solution, when the position of the rotary table needs to be adjusted, the operator can manually pull the insertion rod to overcome the elasticity of the return spring, causing the insertion rod to disengage from the positioning hole. At this time, the lock between the rotary table and the base is released, and the operator can easily rotate the rotary table to the required angle. After the rotary table is rotated to the target position, the insertion rod is released, and under the action of the return spring, the insertion rod automatically inserts into the aligned positioning hole, thereby achieving rapid positioning and locking of the rotary table. This design is not only convenient to operate, but also ensures that the rotary table remains stable after adjustment, effectively meeting the needs for posture adjustment during the polishing process of crankshaft blanks.

[0017] Optionally, the two support seats are slidably connected to each other on a rotating platform, and the base is provided with a drive assembly for driving the two support seats to move closer or further apart.

[0018] By adopting the above technical solution and introducing the drive component, the automation level of the device is improved. The distance between the two support seats can be adjusted according to actual needs, thereby adapting to crankshaft blanks of different lengths and improving the applicability and working efficiency of the equipment.

[0019] Optionally, the drive assembly includes a servo motor, a threaded rod, a sliding sleeve, a first connecting rod, and a second connecting rod. The servo motor is vertically fixed on the base. The threaded rod is connected to the rotating shaft of the servo motor. The sliding sleeve is sleeved on the threaded rod and threadedly connected to the threaded rod. The first connecting rod and the second connecting rod are both rotatably connected to the sliding sleeve. The ends of the first connecting rod and the second connecting rod away from the sliding sleeve are respectively rotatably connected to a support base.

[0020] By adopting the above technical solution, the servo motor drives the threaded rod to rotate, which in turn moves the sliding sleeve along the threaded rod. Then, through the linkage of the first and second connecting rods, the two support seats can be moved closer or further apart. This design can precisely adjust the distance between the two support seats, thereby adapting to crankshaft blanks of different lengths and improving the versatility and flexibility of the equipment.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. Through the rotatable connection between the rotating table and the base and the design of the locking component, the crankshaft blank can be precisely adjusted and locked at multiple angles in the vertical direction. The rotating connection between the rotating cylinder and the support base, together with the fixing component, can stably fix the crankshaft blank and allow the crankshaft blank to rotate around its own axis, improving the efficiency and stability of attitude adjustment. When the crankshaft blank needs to be adjusted in attitude during polishing, it does not need to be repeatedly disassembled and assembled, which improves the problem of having to repeatedly disassemble and assemble the crankshaft blank during the polishing process, which is cumbersome and inconvenient to use.

[0023] 2. The setting of the pressure block and adjusting rod enables quick fixation of the crankshaft blank, and the structure is simple and practical;

[0024] 3. The arrangement of the worm gear, worm, and handwheel allows the operator to easily adjust the crankshaft's attitude by turning the handwheel, improving the flexibility and accuracy of attitude adjustment. Furthermore, the worm gear transmission structure has a self-locking function, which can maintain the crankshaft's attitude stability to a certain extent and reduce attitude deviation caused by accidental vibration. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0027] Figure 2 This is a cross-sectional structural diagram of an embodiment of this application;

[0028] Figure 3 yes Figure 2 A magnified view of part A in the diagram.

[0029] Reference numerals: 1. Base; 11. Positioning hole; 12. Bearing; 2. Rotating table; 21. Locking ring; 3. Support base; 4. Locking assembly; 41. Insert rod; 42. Return spring; 5. Drive assembly; 51. Servo motor; 52. Threaded rod; 53. Sliding sleeve; 54. First connecting rod; 55. Second connecting rod; 6. Rotating cylinder; 7. Fixing assembly; 71. Pressing block; 711. Conical groove; 712. High-strength wear-resistant pad; 72. Adjusting rod; 8. Rotating assembly; 81. Worm gear; 82. Worm; 83. Handwheel. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses a posture adjustment mechanism for polishing crankshaft blanks. (Refer to...) Figure 1The crankshaft blank polishing posture adjustment mechanism includes a base 1, a rotating platform 2, and two support seats 3. The base 1 consists of a base plate and columns. The base plate is a rectangular steel plate with good rigidity and stability, and can be replaced with a flat plate structure made of other high-strength materials. The columns are vertically fixed at the four corners of the bottom of the base plate. The rotating platform 2 is a hollow cylinder, vertically mounted on the base 1, and its bottom is rotatably connected to the base 1 via bearings 12 around its own axis. The base 1 is equipped with a locking assembly 4 for locking the position of the rotating platform 2. The two support seats 3 are radially slidably connected to the upper surface of the rotating platform 2. The base 1 is equipped with a driving assembly 5 for driving the two support seats 3 closer together or further apart. A rotating cylinder 6 is inserted into each support seat 3 along its sliding direction. The rotating cylinder 6 is rotatably connected to the support seat 3 via bearings around its own axis. The rotating cylinder 6 is equipped with a fixing assembly 7 for fixing the crankshaft, and the support seat 3 is equipped with a rotating assembly 8 for driving the rotating cylinder 6 to rotate. The overall structure realizes multi-angle adjustment and fixing functions for the crankshaft.

[0032] In use, the distance between the two support seats 3 is pre-adjusted to be slightly greater than the length of the crankshaft blank by the drive component 5, and then the two ends of the crankshaft blank are fixed by the fixing component 7 to achieve positioning and fixation of the crankshaft blank. When polishing the crankshaft blank, it is not necessary to repeatedly disassemble and assemble the crankshaft blank. The rotation component 8 drives the rotating drum 6 to rotate, and the attitude of the crankshaft blank can be adjusted by rotating the rotating table 2. This facilitates all-round polishing without dead angles and improves the problem of repeatedly disassembling and assembling the crankshaft blank during the polishing process, which is cumbersome and inconvenient to use.

[0033] Specifically, refer to Figure 1-2 The locking assembly 4 includes a rod 41 and a return spring 42. A locking ring 21 is provided on the outer peripheral wall of the bottom of the rotating platform 2. The rod 41 is vertically inserted into the locking ring 21 on the rotating platform 2. Multiple positioning holes 11 are evenly distributed on the base 1 around the rotation axis of the rotating platform 2. The return spring 42 is sleeved on the rod 41. One end of the return spring 42 is connected to the rod 41, and the other end of the return spring 42 is connected to the locking ring 21. When the rod 41 is aligned with the positioning hole 11, the return spring 42 causes the rod 41 to be inserted into the positioning hole 11 under the action of elastic force.

[0034] When the position of the rotating platform 2 needs to be adjusted, the operator overcomes the elastic force of the return spring 42 to disengage the insertion rod 41 from the positioning hole 11, releasing the lock between the rotating platform 2 and the base 1. At this time, the operator can easily rotate the rotating platform 2 to the required angle. After the rotating platform 2 is rotated to the target position, the insertion rod 41 is released. Under the action of the return spring 42, the insertion rod 41 automatically inserts into the aligned positioning hole 11, thereby achieving rapid positioning and locking of the rotating platform 2.

[0035] Furthermore, the drive assembly 5 includes a servo motor 51, a threaded rod 52, a sliding sleeve 53, a first connecting rod 54, and a second connecting rod 55. The servo motor 51 is vertically fixed on the base 1. The threaded rod 52 is coaxially connected to the rotating shaft of the servo motor 51, and the axis of the threaded rod 52 coincides with that of the rotating table 2. The sliding sleeve 53 is sleeved on the threaded rod 52 and threadedly connected to it. The ends of the first connecting rod 54 and the second connecting rod 55 are rotatably connected to the sliding sleeve 53. The end of the first connecting rod 54 away from the sliding sleeve 53 is rotatably connected to one of the support seats 3, and the end of the second connecting rod 55 away from the sliding sleeve 53 is rotatably connected to the other support seat 3.

[0036] When the distance between the two support seats 3 needs to be adjusted, the servo motor 51 is started to drive the threaded rod 52 to rotate. Since the sliding sleeve 53 is connected to the support seat 3 through the first connecting rod 54 and the second connecting rod 55, it cannot rotate synchronously. This allows the threaded rod 52 to rotate, which in turn drives the sliding sleeve 53 to move along the threaded rod 52. Through the linkage of the first connecting rod 54 and the second connecting rod 55, the two support seats 3 can be moved closer or further apart. This design can not only accurately adjust the distance between the two support seats 3 to adapt to crankshaft blanks of different lengths and improve the versatility and flexibility of the equipment, but also utilize the self-locking property of the threaded connection between the sliding sleeve 53 and the threaded rod 52 to make the position adjustment of the support seats 3 more stable and improve the stability of fixing the crankshaft blank. In addition, when the insertion rod 41 is disengaged from the positioning hole 11 to release the lock between the rotating table 2 and the base 1, starting the servo motor 51 can directly drive the rotating table 2 to rotate, reducing the difficulty of rotating the rotating table 2.

[0037] Specifically, refer to Figure 3 The fixing component 7 includes a pressing block 71 and an adjusting rod 72. The pressing block 71 is slidably mounted inside the rotating cylinder 6 along the axial direction. Each of the pressing blocks 71 on both rotating cylinders 6 has a conical groove 711 on one side closest to the other, and a high-strength wear-resistant pad 712 is placed inside the conical groove 711. The adjusting rod 72 passes through the rotating cylinder 6 along the axial direction and is threadedly connected to the rotating cylinder 6. The adjusting rod 72 is rotatably connected to the pressing block 71 around its own axial direction. When the adjusting rod 72 rotates, it can push the pressing block 71 to move along the axial direction of the rotating cylinder 6, thereby pressing the high-strength wear-resistant pad 712 on the pressing block 71 against both ends of the crankshaft, thus achieving precise positioning and clamping fixation of the crankshaft.

[0038] Furthermore, refer to Figure 1The rotating assembly 8 includes a worm gear 81, a worm 82, and a handwheel 83. The worm gear 81 is coaxially connected to the rotating drum 6, and the worm 82 is rotatably connected to the support base 3, meshing with the worm gear 81. The handwheel 83 is connected to the worm 82. Rotating the handwheel 83 drives the worm 82 to rotate, which in turn drives the worm gear 81 to rotate, thus driving the rotating drum 6 to rotate. Combined with the fixing assembly 7, this achieves the functional requirement of the crankshaft blank rotating around its own axis. Simultaneously, the worm gear 81 and worm 82 transmission structure has a self-locking function, which can maintain the crankshaft's posture stability to a certain extent and reduce posture deviation caused by accidental vibrations.

[0039] The implementation principle of the crankshaft blank polishing posture adjustment mechanism in this embodiment is as follows: When fixing the crankshaft blank, first insert the insertion rod 41 into the positioning hole 11 on the base 1 to lock the rotating table 2. Then, start the servo motor 51 to drive the threaded rod 52 to rotate, thereby adjusting the position of the sliding sleeve 53, driving the first connecting rod 54 and the second connecting rod 55 to rotate, thereby adjusting the distance between the two support seats 3 to be slightly greater than the length of the crankshaft blank. Then, rotate the adjusting rod 72 to drive the pressing blocks 71 on the two rotating cylinders 6 to move closer to each other until the high-strength wear-resistant pads 712 are pressed against both ends of the crankshaft blank, thus achieving precise positioning and clamping fixation of the crankshaft blank. When polishing is required on the crankshaft blank, the crankshaft blank can be rotated around its own axis by turning the handwheel 83 to drive the worm gear 82 to rotate, which in turn drives the worm wheel 81 to rotate. By overcoming the elastic force of the return spring 42 and pulling the insertion rod 41 out of the positioning hole 11, the rotating table 2 can be unlocked. Rotating the rotating table 2 can achieve vertical rotation of the crankshaft blank, thereby adjusting the posture of the crankshaft blank and achieving all-round polishing of the crankshaft blank without dead angles. This improves the problem of having to repeatedly disassemble and assemble the crankshaft blank during the polishing process, which is cumbersome and inconvenient to use.

[0040] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A posture adjustment mechanism for polishing crankshaft blanks, characterized in that: The device includes a base, a rotating platform, and two support seats. The rotating platform is rotatably connected to the base via bearings. The base is equipped with a locking component for locking the position of the rotating platform. The two support seats are located on both sides of the rotating platform. A rotating cylinder is inserted into the support seat along the horizontal direction. The rotating cylinder is rotatably connected to the support seat around its own axis. The rotating cylinder is equipped with a fixing component for fixing the crankshaft. The support seats are equipped with a rotating component for driving the rotating cylinder to rotate.

2. The attitude adjustment mechanism for polishing crankshaft blanks according to claim 1, characterized in that: The fixing component includes a pressing block and an adjusting rod. The pressing block is slidably locked inside the rotating cylinder along the axial direction of the rotating cylinder. The adjusting rod passes through the rotating cylinder along the axial direction of the rotating cylinder and is threadedly connected to the rotating cylinder. The adjusting rod is rotatably connected to the pressing block around its own axial direction. The pressing blocks on the two rotating cylinders have conical grooves on their sides that are close to each other.

3. The attitude adjustment mechanism for polishing crankshaft blanks according to claim 2, characterized in that: The conical groove is equipped with a high-strength wear-resistant pad.

4. The attitude adjustment mechanism for polishing crankshaft blanks according to claim 1, characterized in that: The rotating assembly includes a worm gear, a worm, and a handwheel. The worm gear is coaxially connected to the rotating drum, the worm is rotatably connected to the support base, the worm meshes with the worm gear, and the handwheel is connected to the worm.

5. The attitude adjustment mechanism for polishing crankshaft blanks according to claim 1, characterized in that: The locking assembly includes a rod and a return spring. The rod is vertically inserted into the rotating platform, and the base has multiple positioning holes evenly distributed around the rotation axis of the rotating platform. One end of the return spring is connected to the rod, and the other end of the return spring is connected to the rotating platform. When the rod is aligned with the positioning hole, the return spring tends to insert the rod into the positioning hole.

6. The attitude adjustment mechanism for polishing crankshaft blanks according to claim 1, characterized in that: The two support seats are slidably connected to each other on the rotating platform, and the base is provided with a drive assembly for driving the two support seats to move closer or further apart.

7. The attitude adjustment mechanism for polishing crankshaft blanks according to claim 6, characterized in that: The drive assembly includes a servo motor, a threaded rod, a sliding sleeve, a first connecting rod, and a second connecting rod. The servo motor is fixed vertically on the base. The threaded rod is connected to the rotating shaft of the servo motor. The sliding sleeve is fitted onto the threaded rod and threadedly connected to it. The first connecting rod and the second connecting rod are both rotatably connected to the sliding sleeve. The ends of the first connecting rod and the second connecting rod away from the sliding sleeve are respectively rotatably connected to a support base.

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