Efficient grinding device for crankshaft machining
By adopting the linkage design of rotator, vertical shaft, bracket, rotating disc and flexible polishing pad in the crankshaft processing device, combined with pneumatic clamps, the problem of uneven polishing at the curved corners is solved, and efficient and uniform polishing of the crankshaft surface is achieved, improving the improvement of the improvement of the crankshaft surface. The engine's operating performance.
Patent Information
- Application Number
- CN202411413615.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-01-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the existing crankshaft machining and grinding devices deal with rounded corners and transition areas at the curved corners, it is difficult to achieve the ideal surface treatment effect, resulting in uneven grinding and poor surface roughness, which affects the smoothness and durability of the engine.
A highly efficient grinding device for crankshaft processing is designed, adopting a linkage structure of rotator, vertical shaft, bracket, rotating disc, grinding arm and flexible grinding pad. The flexible grinding pad elastically deforms when curvature changes through the elastic support, and combines with a pneumatic clamp. Achieve rapid clamping and release of crankshafts of different diameters to ensure fit and stability during grinding.
It significantly improves the grinding quality and efficiency of complex parts of the crankshaft, improves the appearance quality, and improves the smoothness and durability of the engine.
Smart Images
Figure CN119260505A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of crankshaft machining, and in particular to a high-efficiency grinding device for crankshaft machining. Background Art
[0002] The crankshaft is one of the important rotating parts in the engine. Its main function is to convert the reciprocating motion of the piston into rotational motion. The quality of the crankshaft directly affects the performance and service life of the engine. In the manufacturing process of the crankshaft, the grinding process is the key link to ensure its surface quality and dimensional accuracy.
[0003] Although the existing crankshaft processing and grinding devices can meet the basic processing requirements to a certain extent, it is often difficult to achieve the ideal surface treatment effect when processing the fillet and transition area of the crank. Due to the large curvature changes and narrow space in these areas, traditional grinding tools are difficult to effectively fit the grinding surface, resulting in uneven grinding and substandard surface roughness. These problems not only affect the appearance quality of the crankshaft, but more importantly, they directly affect the smoothness and durability of the engine operation. Summary of the invention
[0004] The purpose of the present invention is to provide an efficient crankshaft machining and grinding device to solve the problem raised in the above background technology that the current crankshaft machining and grinding device is difficult to achieve an ideal surface treatment effect in the fillet and transition area at the bend.
[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an efficient grinding device for crankshaft processing, comprising a frame, a rotator installed in the middle of the frame, the bottom of the rotator is connected to a bracket via a vertical axis, a rotating disk is driven by a spindle motor at the front end of the bracket, a grinding arm is provided on the outer side of the rotating disk, a flexible grinding pad is provided at the outer end of the grinding arm, the flexible grinding pad is connected to the grinding arm via an elastic support member, the elastic support member can undergo elastic deformation during the grinding process to adapt to the curvature change of the crankshaft surface, and pneumatic clamps are provided on both sides of the frame to achieve rapid clamping and release of crankshafts of different diameters.
[0006] Preferably, the frame is composed of two columns and a crossbeam, the crossbeam is fixed to the top of the columns, and reinforcing ribs are welded and fixed to the upper and lower ends of the columns.
[0007] Preferably, two elastic support members are symmetrically provided between the flexible polishing pad and the polishing arm, and a support spring is provided between the elastic support members.
[0008] Preferably, a positioning ring is symmetrically provided on the back side of the bracket, the bottom end of the vertical axis is inserted into the interior of the positioning ring, and a positioning bolt is connected to the positioning ring via a threaded structure.
[0009] Preferably, arc-shaped guide blocks are symmetrically arranged on the outer side of the rotating disk, and an annular guide groove matching the arc-shaped guide block structure is arranged on the back side of the rotating disk.
[0010] Preferably, a slider is symmetrically provided at the bottom of the crossbeam through a linear guide rail, a lifting cylinder is provided at the bottom of the slider, a solid block is provided at the output end of the lifting cylinder, and the pneumatic clamp is installed at the bottom of the solid block.
[0011] Preferably, telescopic rods are connected to the four corners between the sliding block and the solid block, and a reinforcing shaft is connected between the bottom ends on the same side of the telescopic rods.
[0012] Preferably, a circular ring is fixed to the bottom of the solid block by welding, and a loop rope is connected to the circular ring at the bottom of the solid block.
[0013] Preferably, each group of the pneumatic clamps is provided with two clamping jaws of an arc-shaped structure, and an elastic protective pad is provided on the inner wall of the clamping jaws of the pneumatic clamps.
[0014] Preferably, the flexible grinding pad is a circular structure made of wear-resistant material, and a support plate is provided on the back side of the flexible grinding pad.
[0015] Compared with the prior art, the invention has the following beneficial effects: the high-efficiency grinding device for crankshaft processing can better fit the surface of the complex parts of the crankshaft, achieve uniform grinding, and significantly improve the grinding quality and efficiency, thereby improving the appearance quality of the crankshaft and helping to improve the smoothness and durability of the engine operation. The device is designed through the linkage of the rotator, vertical shaft, bracket, rotating disk, grinding arm, and flexible grinding pad and elastic support member. In particular, under the action of the elastic support member, the flexible grinding pad can undergo elastic deformation according to the curvature change of the crankshaft surface, ensuring the fit and stability during the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of a high-efficiency grinding device for crankshaft machining according to the present invention;
[0017] Figure 2 This is a schematic diagram of the external top view of a bracket of a crankshaft processing and high-efficiency grinding device of the present invention;
[0018] Figure 3 It is a schematic diagram of the connection structure between the pneumatic clamp and the slider of a crankshaft processing and high-efficiency grinding device of the present invention;
[0019] Figure 4 This is a schematic diagram of the back structure of a bracket of a high-efficiency grinding device for crankshaft processing according to the present invention;
[0020] Figure 5 This is a schematic diagram of the external side view of a bracket of a high-efficiency crankshaft machining and grinding device of the present invention.
[0021] In the figure: 1, frame; 101, column; 102, beam; 103, reinforcing rib; 2, rotator; 3, vertical axis; 4, bracket; 5, rotating disk; 6, grinding arm; 7, flexible grinding pad; 8, elastic support; 9, slider; 10, lifting cylinder; 11, telescopic rod; 12, solid block; 13, pneumatic clamp; 14, rope; 15, support spring; 16, arc guide block; 17, positioning ring; 18, reinforcing shaft. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0023] See also Figure 1-5The present invention provides a technical solution: an efficient grinding device for crankshaft processing, comprising a frame 1, a rotator 2 is installed in the middle of the frame 1, the bottom of the rotator 2 is connected to a bracket 4 through a vertical shaft 3, a rotating disk 5 is driven at the front end of the bracket 4 by a spindle motor, a grinding arm 6 is arranged on the outer side of the rotating disk 5, a flexible grinding pad 7 is arranged on the outer end of the grinding arm 6, the flexible grinding pad 7 is connected to the grinding arm 6 through an elastic support 8, the elastic support 8 can be elastically deformed during the grinding process to adapt to the curvature change of the crankshaft surface, and pneumatic clamps 13 are arranged on both sides of the frame 1 to realize the rapid clamping and release of crankshafts of different diameters. The frame 1 of this structure serves as the basic support of the entire device, and the vertical shaft 3 is driven to rotate by the rotator 2. The rotation causes the bracket 4 to move accordingly, thereby allowing the rotating disk 5 at the front end to rotate stably, and the rotating disk 5 is driven by the spindle motor to drive the grinding arm 6 to rotate around the center of the rotating disk 5 until the grinding arm 6 drives the flexible grinding pad 7 to move to a suitable position. The flexible grinding pad 7 can be elastically deformed according to the curvature change of the crankshaft surface under the action of the elastic support 8, so as to closely fit the complex surface of the crankshaft for grinding. At the same time, the pneumatic clamps 13 on both sides of the frame 1 can quickly clamp or release crankshafts of different diameters through pneumatic control, ensuring that the crankshaft can be firmly fixed during the entire grinding process, thereby achieving efficient and uniform grinding of the crankshaft, especially the fillet and transition area at the crank, improving the grinding quality and efficiency, and solving the existing technology In order to solve the problem of uneven grinding and substandard surface roughness caused by the difficulty of effectively fitting the grinding surface to the complex parts of the crankshaft, the frame 1 is composed of two columns 101 and a crossbeam 102. The crossbeam 102 is fixed to the top of the column 101, and the upper and lower ends of the column 101 are welded and fixed with reinforcing ribs 103. The structural column 101 provides a stable vertical support. The crossbeam 102 connects the tops of the two columns 101 horizontally, thereby enhancing the lateral rigidity of the entire frame 1, and the reinforcing ribs 103 respectively increase additional structural strength and stability at the upper and lower ends of the column 101. Through such a design, the entire frame 1 can not only withstand the vibration and impact loads generated during the grinding process, but also ensure that the rotator 2 and other components mounted thereon, such as the rotating disk 5 In order to ensure the precise positioning and stable operation of components such as the grinding arm 6, two elastic support members 8 are symmetrically arranged between the flexible grinding pad 7 and the grinding arm 6. The elastic support members 8 are made of a thin elastic metal material with a bending structure, and a supporting spring 15 is arranged between the elastic support members 8. The elastic support members 8 of this structure can ensure that the flexible grinding pad 7 is subjected to uniform force in all directions, and the supporting spring 15 located between the two further enhances the overall elastic buffering effect, so that the flexible grinding pad 7 can better fit the complex surface contour of the crankshaft. A positioning ring 17 is symmetrically welded and fixed on the back side of the bracket 4. The bottom end of the vertical shaft 3 is inserted into the interior of the positioning ring 17, and a positioning bolt is connected to the positioning ring 17 through a threaded structure. The positioning ring 17 of this structure can effectively fix the vertical shaft 3.To ensure the stability and concentricity of the vertical axis 3 during rotation, the interlaced cooperation between the positioning ring 17 and the vertical axis 3, plus the tightening effect of the positioning bolt, can not only prevent the vertical axis 3 from deflecting or shaking during high-speed rotation, but also when it is necessary to adjust the initial height of the bracket 4, the height of the bracket 4 can be conveniently adjusted by loosening the positioning bolt until the desired working position is reached and then retightening the positioning bolt, thereby ensuring that the entire device still maintains good stability and positioning accuracy when operating at different heights, thereby providing reliable protection for the precise movement of the grinding arm 6. The outer side of the rotating disk 5 is symmetrically welded and fixed with an arc guide block 16, and the back side of the rotating disk 5 is provided with an annular guide groove that matches the arc guide block 16 structure. In this structure, the rotating disk 5 is rotated through the arc guide block 16. The annular guide groove on the back side of the rotating disk 5 cooperates with each other, so that the rotating disk 5 can slide smoothly along the annular guide groove during the rotation process, ensuring the rotation accuracy and stability of the rotating disk 5. The bottom of the beam 102 is symmetrically provided with a slider 9 through a linear guide rail, and the bottom of the slider 9 is provided with a lifting cylinder 10. The output end of the lifting cylinder 10 is provided with a solid block 12, and the pneumatic clamp 13 is installed at the bottom of the solid block 12. When the height of the two pneumatic clamps 13 needs to be adjusted to adapt to crankshafts of different diameters, the lifting cylinder 10 drives the pneumatic clamp 13 to move up and down through the solid block 12 at its output end, ensuring that the pneumatic clamp 13 can quickly and accurately clamp or release crankshafts of different sizes, and the slider 9 can move in a straight line direction under the beam 102 to cooperate with the lifting cylinder 10. The lifting action of the cylinder 10 provides a firm fixing effect during the grinding process. The four corners between the slider 9 and the solid block 12 are connected with telescopic rods 11, and the bottom ends of the telescopic rods 11 on the same side are connected with reinforcing shafts 18. When the lifting cylinder 10 performs the lifting action, the telescopic rods 11 can be synchronously extended and retracted with the action of the cylinder to ensure that the solid block 12 and the pneumatic clamp 13 below it remain stable during the lifting process. At the same time, the reinforcing shaft 18 further enhances the lateral stability of the entire structure and reduces the shaking of the pneumatic clamp 13 due to external force when clamping or releasing the crankshaft, thereby not only enhancing the stability and reliability of the entire device, but also effectively reducing the pressure on the lifting cylinder 10 during operation. The bottom of the solid block 12 is also fixed by welding. A circular ring is fixed, and a rope 14 is connected to the circular ring at the bottom of the solid block 12. In this structure, when the pneumatic clamp 13 clamps the crankshaft, the rope 14 can bypass a specific part of the crankshaft and be tightened and fixed on the circular ring, thereby further enhancing the fixing effect of the crankshaft on the basis of the pneumatic clamp 13. Each group of the pneumatic clamp 13 is provided with two arc-shaped jaws, and the inner wall of the jaws of the pneumatic clamp 13 is provided with an elastic protective pad. In this structure, the pneumatic clamp 13 can better adapt to different diameters and shapes of the crankshaft through each group of two arc-shaped jaws to ensure the fit during clamping, and the elastic protective pad provided on the inner wall of the jaw can effectively reduce the hard contact with the crankshaft surface when the pneumatic clamp 13 clamps the crankshaft, and prevent the crankshaft surface from being damaged due to excessive clamping force.At the same time, the elastic protective pad can also play a certain buffering role in the clamping process, ensuring that the crankshaft remains stable during the grinding process without sliding or vibrating. The flexible grinding pad 7 is a circular structure made of wear-resistant material, and a support plate is provided on the back side of the flexible grinding pad 7. The flexible grinding pad 7 made of wear-resistant material with this structure can ensure that it is not easily damaged during long-term grinding operations and extend its service life. The support plate on the back side of the flexible grinding pad 7 can enhance the connection strength between the flexible grinding pad 7 and the grinding arm 6, ensuring the stability and positioning accuracy of the flexible grinding pad 7 during the grinding process.
[0024] Working principle: When using the high-efficiency grinding device for crankshaft processing, first adjust the initial height of the bracket 4 by loosening the positioning bolts on the positioning ring 17, and then retighten the positioning bolts after reaching the required working position. Then, move along the linear guide rail under the crossbeam 102 through the slider 9, and adjust the height of the pneumatic clamp 13 in cooperation with the lifting action of the lifting cylinder 10 to adapt to crankshafts of different diameters. Then, start the spindle motor to drive the rotating disk 5 to rotate around the center of the rotating disk 5. The rotating disk 5 cooperates with the annular guide groove on the back side of the rotating disk 5 through the arc guide block 16 until the grinding arm 6 drives the flexible grinding pad 7 to move to a suitable position. At this time, the pneumatic clamps 13 on both sides of the frame 1 quickly clamp the crankshaft through pneumatic control, and at the same time, the rope 14 connected to the circular ring at the bottom of the fixed block 12 can bypass a specific part of the crankshaft and be fixed on the circular ring by tightening. Finally, the flexible grinding pad 7 undergoes elastic deformation according to the curvature change of the crankshaft surface under the action of the elastic support 8 and the support spring 15, so as to fit closely to the complex surface of the crankshaft for grinding, thereby completing a series of work.
[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A crankshaft processing and high-efficiency grinding device, comprising a frame (1), characterized in that: A rotator (2) is installed in the middle of the frame (1), the bottom of the rotator (2) is connected to a bracket (4) via a vertical axis (3), the front end of the bracket (4) is driven by a spindle motor to have a rotating disk (5), a grinding arm (6) is provided on the outer side of the rotating disk (5), a flexible grinding pad (7) is provided at the outer end of the grinding arm (6), the flexible grinding pad (7) and the grinding arm (6) are connected via an elastic support member (8), the elastic support member (8) can undergo elastic deformation during the grinding process to adapt to the curvature change of the crankshaft surface, and pneumatic clamps (13) are provided on both sides of the frame (1) to achieve rapid clamping and release of crankshafts of different diameters.
2. The high-efficiency crankshaft grinding device according to claim 1, characterized in that: The frame (1) is composed of two upright posts (101) and a crossbeam (102); the crossbeam (102) is fixed to the top of the upright posts (101); and reinforcing ribs (103) are welded and fixed to the upper and lower ends of the upright posts (101).
3. The high-efficiency crankshaft grinding device according to claim 1, characterized in that: Two elastic support members (8) are symmetrically arranged between the flexible polishing pad (7) and the polishing arm (6), and a support spring (15) is arranged between the elastic support members (8).
4. The high-efficiency grinding device for crankshaft machining according to claim 1, characterized in that: A positioning ring (17) is symmetrically provided on the back side of the bracket (4), the bottom end of the vertical shaft (3) is inserted into the interior of the positioning ring (17), and a positioning bolt is connected to the positioning ring (17) via a threaded structure.
5. The high-efficiency crankshaft grinding device according to claim 1, characterized in that: The outer side of the rotating disk (5) is symmetrically provided with an arc-shaped guide block (16), and the back side of the rotating disk (5) is provided with an annular guide groove that matches the arc-shaped guide block (16) structure.
6. The high-efficiency crankshaft grinding device according to claim 1, characterized in that: A slider (9) is symmetrically arranged at the bottom of the crossbeam (102) via a linear guide rail, a lifting cylinder (10) is arranged at the bottom of the slider (9), a solid block (12) is arranged at the output end of the lifting cylinder (10), and the pneumatic clamp (13) is installed at the bottom of the solid block (12).
7. The high-efficiency crankshaft grinding device according to claim 6, characterized in that: The four corners between the sliding block (9) and the solid block (12) are connected with telescopic rods (11), and the bottom ends on the same side of the telescopic rods (11) are connected with reinforcing shafts (18).
8. The high-efficiency crankshaft grinding device according to claim 6, characterized in that: A circular ring is also fixed to the bottom of the solid block (12) by welding, and a sleeve rope (14) is connected to the circular ring at the bottom of the solid block (12).
9. The high-efficiency crankshaft grinding device according to claim 1, characterized in that: Each group of the pneumatic clamps (13) is provided with two clamping jaws with an arc-shaped structure, and an elastic protective pad is provided on the inner wall of the clamping jaws of the pneumatic clamp (13).
10. The high-efficiency crankshaft grinding device according to claim 1, characterized in that: The flexible grinding pad (7) is a circular structure made of wear-resistant material, and a support plate is provided on the back side of the flexible grinding pad (7).