High-precision grinding equipment for engine valve assemblies

Abstract

This utility model relates to the field of engine valve assembly technology, specifically to a high-precision grinding equipment for engine valve assemblies. It includes a housing, a guide assembly, and a grinding assembly. The guide assembly is housed within the housing, and a first positioning assembly is located at the top of the housing. Second positioning assemblies and grinding assemblies are located on both sides of the housing. The first positioning assembly includes a sleeve, with a rod fitted to the bottom of the sleeve. One end of the rod is fitted with a fixed sleeve via a bearing. The second positioning assembly includes an electric push rod, the output end of which is bolted to a clamping block. By adding a dual positioning mechanism, utilizing dual positioning and guide limiting, the continuity and convenience of the equipment processing are improved, processing time is shortened, and grinding accuracy is enhanced, thereby improving the overall performance.

Description

Technical Field

[0001] This utility model relates to the field of engine valve assembly technology, specifically to high-precision grinding equipment for engine valve assemblies. Background Technology

[0002] The engine valve assembly typically refers to the collection of core components in the engine valve mechanism, which is mainly responsible for controlling the intake and exhaust processes of the engine cylinders. It is a key part of the engine valve train and directly affects the engine's power, economy, and emissions performance. As the core component of the engine valve assembly, the machining accuracy of the valve head and stem has a direct and critical impact on the engine's intake efficiency, exhaust flow, and sealing performance. Grinding is a key process to ensure dimensional accuracy, shape accuracy, and surface quality.

[0003] Currently, grinding equipment lacks a dual positioning mechanism. In the grinding of valves in engine valve assemblies, traditional equipment often uses a step-by-step grinding method, first machining the head and then the stem. However, the secondary positioning caused by the process interval is prone to errors, affecting the overall machining accuracy of the valve. Moreover, the processing cycle is long, and the processing time per piece is increased, making it difficult to meet the needs of high-efficiency production. Therefore, a high-precision grinding equipment for engine valve assemblies is proposed to incorporate a dual positioning mechanism. By using dual positioning and guide limit methods, the continuity and convenience of equipment processing can be improved, processing time can be shortened, and grinding accuracy can be improved, thereby enhancing the performance. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a high-precision grinding equipment for engine valve assemblies, which can improve the continuity and convenience of equipment processing by using dual positioning and guide limiting methods, thereby improving the performance.

[0005] The technical solution adopted by this utility model to solve its technical problem is a high-precision grinding equipment for engine valve assembly, including a housing, a guide assembly and a grinding assembly. The guide assembly is provided inside the housing, a first positioning assembly is provided at the top inside the housing, and a second positioning assembly and a grinding assembly are provided on both sides of the housing.

[0006] The first positioning component includes a sleeve, and a rod is sleeved to the bottom of the sleeve. A fixed sleeve is installed at one end of the rod via a bearing. The second positioning component includes an electric push rod, and a clamping block is bolted to the output end of the electric push rod.

[0007] By adopting the above technical solution, continuous grinding operations can be achieved at different parts of the engine valve assembly valve by using sliding guide and double limit.

[0008] Specifically, both sides of the fixed sleeve are slidably connected to limit blocks, and both sides of the fixed sleeve are threadedly connected to positioning screws through reserved threaded holes, with one end of the positioning screws rotatably connected to the limit blocks through a rotating shaft.

[0009] Specifically, the guide assembly includes a support frame, a processing table is mounted on the top of the support frame via a bearing, an anti-slip pad is adhered to the surface of the top of the processing table, a drive motor is bolted inside the support frame, and the drive motor is connected to the processing table via a drive shaft, and a lifting cylinder is provided at the bottom of the support frame, and the output end of the lifting cylinder is bolted to the support frame.

[0010] Specifically, a compression spring is installed inside the sleeve at the top of the sleeve rod via a spring seat, and a cylinder is bolted to the top of the housing. The output end of the cylinder is bolted to the top of the sleeve.

[0011] Specifically, the grinding assembly includes a U-shaped frame, which is bolted to the housing. A linear cylinder is slidably connected inside the U-shaped frame, and a grinding head is bolted to the output end of the linear cylinder. A lead screw is mounted on the inner side of the U-shaped frame via bearings, and a corresponding ball bearing slide is sleeved around the lead screw. The ball bearing slide is bolted to the linear cylinder. A servo motor is bolted to the bottom of the U-shaped frame, and the servo motor is connected to the lead screw via a drive shaft.

[0012] Specifically, nozzles are provided on both sides of the housing, and a recycling tank is provided at the bottom of the housing.

[0013] The beneficial effects of this utility model are:

[0014] (1) The high-precision grinding equipment for engine valve assembly described in this utility model adds a double positioning mechanism by setting a housing, sleeve, sleeve rod, electric push rod and clamping block. By using sliding guide and double limit, it can realize continuous grinding operation of different parts of the engine valve assembly valve, improve the continuity and convenience of grinding operation, thereby replacing the traditional secondary positioning operation method, and also helps to improve the processing accuracy and quality of valve.

[0015] (2) The high-precision grinding equipment for engine valve assembly described in this utility model can add an auxiliary adjustment mechanism by setting a fixed sleeve, a limit block and a positioning screw. It can adjust according to the actual valve size by using threaded connection and sliding displacement to adapt to different usage needs and further improve the flexibility and stability of the equipment. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the shell structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the first positioning component of this utility model;

[0020] Figure 4 This is a cross-sectional view of the guide component of this utility model;

[0021] Figure 5 This is a schematic diagram of the grinding assembly structure of this utility model;

[0022] Figure 6 This is a cross-sectional view of the U-shaped frame structure of this utility model;

[0023] In the diagram: 1. Housing; 2. Guide assembly; 201. Support frame; 202. Processing table; 203. Anti-slip mat; 204. Drive motor; 205. Lifting cylinder; 3. First positioning assembly; 301. Sleeve; 302. Sleeve rod; 303. Fixing sleeve; 304. Positioning screw; 305. Limiting block; 306. Compression spring; 4. Second positioning assembly; 401. Electric push rod; 402. Clamping block; 5. Grinding assembly; 501. U-shaped frame; 502. Linear cylinder; 503. Grinding head; 504. Lead screw; 505. Ball bearing slider; 506. Servo motor; 6. Cylinder; 7. Nozzle; 8. Recycling tank. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] To facilitate the use of dual positioning and guide limiting methods, thereby improving the continuity and convenience of equipment processing and enhancing its effectiveness, such as... Figure 1-3 As shown, the high-precision grinding equipment for engine valve assembly of this utility model includes a housing 1, a guide assembly 2 and a grinding assembly 5. The guide assembly 2 is provided inside the housing 1, a first positioning assembly 3 is provided at the top inside the housing 1, and a second positioning assembly 4 and a grinding assembly 5 are provided on both sides of the housing 1.

[0026] The first positioning component 3 includes a sleeve 301, the bottom of which is fitted with a sleeve rod 302, and one end of the sleeve rod 302 is fitted with a fixing sleeve 303 via a bearing. The second positioning component 4 includes an electric push rod 401, the output end of which is bolted to a clamping block 402.

[0027] In use, a double positioning mechanism is added through sleeve 301, sleeve rod 302, fixed sleeve 303, electric push rod 401 and clamping block 402. By using sliding guide and double limit, continuous grinding operations of different parts of the engine valve assembly valve can be realized, improving the continuity and convenience of grinding operations.

[0028] To improve the flexibility of use, for example, such as Figure 2 , Figure 3 As shown, the present invention also includes a limiting block 305 slidably connected to both sides of the fixed sleeve 303, and a positioning screw 304 threadedly connected to both sides of the fixed sleeve 303 through a reserved threaded hole, and one end of the positioning screw 304 is rotatably connected to the limiting block 305 through a rotating shaft.

[0029] An anti-slip pad is provided on the top of the fixed sleeve 303.

[0030] In use, the fixed sleeve 303, the limiting block 305 and the positioning screw 304 can be used to add an auxiliary adjustment mechanism to adjust according to the actual size of the workpiece, thereby improving the flexibility and convenience of the equipment. The limiting block 305 is slidably connected to the fixed sleeve 303 through the top slider. Both the limiting block 305 and the clamping block 402 are provided with V-grooves.

[0031] For example, such as Figure 4 As shown, the present invention also includes the following: the guide assembly 2 includes a support frame 201, a processing table 202 is mounted on the top of the support frame 201 via a bearing, an anti-slip pad 203 is adhered to the surface of the top of the processing table 202, a drive motor 204 is bolted inside the support frame 201, and the drive motor 204 is connected to the processing table 202 via a drive shaft, and a lifting cylinder 205 is provided at the bottom of the support frame 201, and the output end of the lifting cylinder 205 is bolted to the support frame 201.

[0032] In use, the support frame 201, processing table 202, anti-slip pad 203, drive motor 204 and lifting cylinder 205 can be used to lift and move the workpiece to cooperate with the first positioning component 3 and the second positioning component 4 for guidance and positioning. The lifting cylinder 205 includes a protective cover.

[0033] For example, such as Figure 1 , 3 As shown, the present invention also includes a compression spring 306 installed inside the sleeve 301 at the top of the sleeve rod 302 via a spring seat, and a cylinder 6 connected to the top of the housing 1 via bolts, the output end of the cylinder 6 being connected to the top of the sleeve 301 via bolts.

[0034] In use, the compression spring 306 facilitates the downward sliding of the sleeve rod 302 by using elastic force, ensuring the effectiveness of the fixed sleeve 303. The cylinder 6 facilitates the downward sliding of the first positioning component 3 for clamping and positioning.

[0035] For example, such as Figure 5 , 6 As shown, this utility model also includes the grinding assembly 5, which includes a U-shaped frame 501 and is bolted to the housing 1. A linear cylinder 502 is slidably connected inside the U-shaped frame 501. The output end of the linear cylinder 502 is bolted to a grinding head 503. A lead screw 504 is mounted on the inner side of the U-shaped frame 501 via a bearing. A corresponding ball bearing slider 505 is sleeved around the lead screw 504 and is bolted to the linear cylinder 502. A servo motor 506 is bolted to the bottom of the U-shaped frame 501 and is connected to the lead screw 504 via a drive shaft.

[0036] In use, the U-shaped frame 501, linear cylinder 502, and grinding head 503 can be used to grind the workpiece by contacting it with the horizontal movement and rotation. The ball screw 504, ball slider 505, and servo motor 506 can be used to control and adjust the working height of the grinding assembly 5 to adapt to different usage needs. The ball screw 504 is equipped with a telescopic protective cover, and the grinding head 503 is a diamond grinding head.

[0037] For example, such as Figure 2 As shown, the present invention also includes nozzles 7 on both sides of the housing 1 and a recycling tank 8 at the bottom of the housing 1.

[0038] During use, the nozzle 7 facilitates connection to an external water pump to pump coolant for rinsing, and the recovery tank 8 facilitates the recovery of waste chips and waste liquid generated during grinding. A filter screen is installed on the top of the recovery tank 8. The housing 1 includes a controller, a sealing door and a waste discharge port. The drive motor 204, lifting cylinder 205, electric push rod 401, linear cylinder 502, servo motor 506 and cylinder 6 are all electrically connected to the controller via wires.

[0039] In use, the operator first opens the sealed door and places the workpiece on the processing table 202. After closing the sealed door, the electric push rod 401 drives the clamping block 402 to slide inward to both sides of the valve stem for auxiliary correction and limiting. Then, the lifting cylinder 205 drives the processing table 202 to rise, while the cylinder 6 drives the sleeve 301 to slide downward, so that the end of the workpiece is inserted into the fixed sleeve 303 to complete the clamping and limiting. Through the clamping and lifting of the lifting cylinder 205 and the cylinder 6, the processing position of the workpiece is adjusted. The drive motor 204 drives the workpiece and the fixed sleeve 303 to rotate synchronously through the processing table 202. Then, the grinding head 503 is driven to move horizontally to contact the workpiece through the linear cylinders 502 on both sides for grinding. During the grinding process, the workpiece can also be rinsed by the external water pump connected to the spray nozzle 7 to improve the grinding quality of the workpiece.

[0040] To improve the grinding accuracy of different workpieces, the positioning screw 304 can be rotated in advance according to the actual workpiece size to adjust the position and spacing of the limit block 305, so as to provide auxiliary limit treatment for the end of the workpiece, thereby improving the stability of workpiece processing. The overall structure is simple, the operation is convenient and flexible, and it can also realize continuous grinding processing of different parts of the workpiece through double clamping, making it faster and more reliable to use, and also helping to improve the processing accuracy and quality of the workpiece.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision grinding machine for engine valve assemblies, characterized in that, It includes a housing (1), a guide assembly (2) and a grinding assembly (5). The guide assembly (2) is provided inside the housing (1), a first positioning assembly (3) is provided at the top inside the housing (1), and a second positioning assembly (4) and a grinding assembly (5) are provided on both sides of the housing (1). The first positioning component (3) includes a sleeve (301), the bottom of which is fitted with a sleeve rod (302), and one end of the sleeve rod (302) is fitted with a fixing sleeve (303) via a bearing. The second positioning component (4) includes an electric push rod (401), the output end of which is bolted to a clamping block (402).

2. The high-precision grinding equipment for engine valve assemblies according to claim 1, characterized in that, Both sides of the fixed sleeve (303) are slidably connected to limit blocks (305), and both sides of the fixed sleeve (303) are threadedly connected to positioning screws (304) through reserved threaded holes, and one end of the positioning screws (304) is rotatably connected to the limit blocks (305) through a rotating shaft.

3. The high-precision grinding equipment for engine valve assemblies according to claim 1, characterized in that, The guide assembly (2) includes a support frame (201), a processing table (202) is mounted on the top of the support frame (201) via a bearing, an anti-slip pad (203) is adhered to the surface of the top of the processing table (202), a drive motor (204) is bolted inside the support frame (201), and the drive motor (204) is connected to the processing table (202) via a drive shaft, and a lifting cylinder (205) is provided at the bottom of the support frame (201), and the output end of the lifting cylinder (205) is bolted to the support frame (201).

4. The high-precision grinding equipment for engine valve assemblies according to claim 2, characterized in that, A compression spring (306) is installed inside the sleeve (301) at the top of the sleeve rod (302) via a spring seat. A cylinder (6) is bolted to the top of the housing (1). The output end of the cylinder (6) is bolted to the top of the sleeve (301).

5. The high-precision grinding equipment for engine valve assemblies according to claim 1, characterized in that, The grinding assembly (5) includes a U-shaped frame (501), which is bolted to the housing (1). A linear cylinder (502) is slidably connected inside the U-shaped frame (501). The output end of the linear cylinder (502) is bolted to a grinding head (503). A lead screw (504) is mounted on the inner side of the U-shaped frame (501) via a bearing. A corresponding ball block (505) is sleeved around the lead screw (504), and the ball block (505) is bolted to the linear cylinder (502). A servo motor (506) is bolted to the bottom of the U-shaped frame (501), and the servo motor (506) is connected to the lead screw (504) via a drive shaft.

6. The high-precision grinding equipment for engine valve assemblies according to claim 1, characterized in that, The housing (1) is provided with nozzles (7) on both sides, and a recycling tank (8) is provided at the bottom of the housing (1).

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