Valve lifter grinding tool

Abstract

The utility model discloses a valve tappet grinding frock relates to machining technical field, including processing box, be provided with driving motor in the processing box, be provided with fixed establishment on driving motor upper end, and fixed establishment includes: telescopic push rod, moving block, moving block is connected in telescopic push rod drive end, the first inclined plane is established to moving block top outside, the second inclined plane is established to moving block bottom inside, fixed block, fixed block is located moving block outer end, and the recess is established to fixed block inside. The utility model discloses design structure is reasonable, it can guarantee valve tappet to keep stable position and posture in the grinding process, improves the grinding accuracy, and the loading and unloading are convenient and fast, and the production efficiency is improved, can accurately deliver cooling liquid to the vicinity of the grinding head, carries out the full cooling and lubrication to the grinding process, effectively reduces the grinding temperature, avoids the surface burn of valve tappet and the hardness change etc.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a valve tappet grinding fixture. Background Technology

[0002] As a key component in the engine's valve train, the machining accuracy of the outer end face of the valve tappet directly affects the engine's valve train efficiency, operational stability, and service life. In the manufacturing process of valve tappets, grinding is a crucial step to ensure its dimensional accuracy, geometric tolerances, and surface roughness, while the performance of the grinding tooling is the core factor determining grinding quality and production efficiency.

[0003] However, most commonly used valve tappet grinding fixtures currently employ external clamping methods, such as clamping the workpiece from the outside with jaws or using pressure plates for axial fixation. However, these traditional fixtures have many technical limitations: the loading and unloading process often requires manual and repeated adjustment of the clamping components, which is cumbersome and time-consuming, severely restricting the automation level and production efficiency of the production line; the external clamping jaws or pressure plates can obstruct the movement trajectory of the grinding head, limiting the grinding range and easily leading to insufficient grinding or interference and collision problems, increasing the processing difficulty.

[0004] To address these issues, we provide valve tappet grinding fixtures. Utility Model Content

[0005] 1) Technical problems to be solved

[0006] This utility model proposes a valve tappet grinding fixture. Through the cooperation of the fixing mechanism, drive motor, and various components such as cooling and protection, it solves the problems of traditional valve tappet clamping fixtures, which mostly rely on manual external clamping and fixing. These fixtures require repeated manual adjustment of the clamping components, resulting in high labor intensity, low efficiency, and the external clamping can obstruct the movement trajectory of the grinding head, limiting the grinding range and easily causing problems such as insufficient grinding or interference and collision, thus increasing the processing difficulty.

[0007] (ii) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a valve tappet grinding fixture, comprising a machining box, a drive motor disposed within the machining box, and a fixing mechanism disposed at the upper end of the drive motor, the fixing mechanism comprising:

[0009] A telescopic push rod and a movable block, wherein the movable block is connected to the drive end of the telescopic push rod, and a first inclined surface is provided on the outer side of the top of the movable block, and a second inclined surface is provided on the inner side of the bottom of the movable block;

[0010] A fixed block is located at the outer end of the movable block. A groove is formed inside the fixed block. The upper wall of the groove is set as a third inclined surface and the lower wall is set as a fourth inclined surface. The first inclined surface is slidably connected to the third inclined surface, and the second inclined surface is slidably connected to the fourth inclined surface.

[0011] A support plate is located at the lower end of a fixed block. The drive end of a telescopic push rod is slidably connected inside the support plate. A groove is provided inside the support plate. A slider is connected to the lower end of the fixed block and is slidably connected inside the groove.

[0012] Furthermore, the fixing mechanism also includes a support rod, which is connected to the upper end of the support plate and is located in the gap between adjacent fixing blocks.

[0013] Furthermore, the fixing mechanism also includes a top pad, which is connected to the upper end of the support rod and is located at the upper end of the fixing block. A cotton pad is connected to the outer end of the fixing block, and the surface of the cotton pad is provided with an anti-slip texture.

[0014] Furthermore, a protective cover is connected inside the processing box, the drive motor is located inside the protective cover, an installation plate is connected inside the protective cover, a heat dissipation slot is opened in the installation plate, and a water flow slot is opened at the lower end of the protective cover.

[0015] Furthermore, a horizontal telescopic rod is connected inside the processing box, a vertical telescopic rod is connected to the driving end of the horizontal telescopic rod, and an adjustment motor is connected to the driving end of the vertical telescopic rod.

[0016] Furthermore, the drive end of the regulating motor is connected to a mounting rod, a grinding head is mounted on the side end of the mounting rod, and a protective shell is provided on the outer end of the regulating motor.

[0017] Furthermore, a liquid guiding hose is provided inside the processing box, and a storage box is connected to the rear end of the processing box. A pump is provided inside the storage box, and one end of the liquid guiding hose is connected to the pump, while the other end is connected to the mounting rod.

[0018] Furthermore, a control panel is connected to the side of the processing box, a door is provided at the front of the processing box, and a drain pipe is connected to the lower end of the processing box.

[0019] Furthermore, a hot air duct is connected to the upper end of the processing box, and a fan and a heating component are connected inside the hot air duct. The heating component consists of multiple electric heating rods, and a dust filter screen is provided at the upper end of the hot air duct.

[0020] (iii) Beneficial effects:

[0021] Compared with existing technologies, this valve tappet grinding fixture has the following advantages:

[0022] I. This valve tappet grinding fixture features a fixing mechanism. The valve tappet is secured to the outer end of the top pad. When the telescopic push rod is activated, it pushes the moving block upward. As the moving block rises, its first inclined surface interacts with the third inclined surface of all the fixed blocks. Under the constraint of the slider, all the fixed blocks expand outward, thus clamping and fixing the valve tappet from the inside. When the telescopic push rod falls back, the moving block descends, and its second inclined surface interacts with the fourth inclined surface of all the fixed blocks, causing all the fixed blocks to retract inward. This releases the fixed blocks from fixing the valve tappet. This fixing method not only provides high precision, ensuring the valve tappet maintains a stable position and posture during grinding and improving grinding accuracy, but also allows for convenient and quick loading and unloading, improving production efficiency. Furthermore, fixing it from the inside avoids the clamping components obstructing the grinding head, facilitating the grinding process.

[0023] II. This valve tappet grinding fixture, by setting up a fluid guide hose, storage tank and pump, can accurately deliver coolant to the vicinity of the grinding head, so as to fully cool and lubricate the grinding process, effectively reduce the grinding temperature, avoid problems such as burning and hardness change of the valve tappet surface, reduce grinding resistance, and improve processing efficiency and valve tappet surface quality.

[0024] Third, this valve tappet grinding fixture, by setting a fan and heating components in the hot air pipe, can dry the processed valve tappet to prevent rusting. The dust filter prevents external dust from entering the processing box, and the drain pipe discharges waste liquid in time to keep the processing environment clean. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0026] Figure 1 This is a schematic diagram of the overall structure of the valve tappet grinding fixture of this utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the valve tappet grinding fixture of this utility model;

[0028] Figure 3 This is a schematic diagram of the side cross-sectional structure of the valve tappet grinding fixture of this utility model;

[0029] Figure 4 This is a schematic diagram of the fixing block structure of the valve tappet grinding fixture of this utility model;

[0030] Figure 5This is a schematic cross-sectional view of the protective cover of the valve tappet grinding fixture of this utility model.

[0031] Figure 6 This is a schematic diagram of the cross-sectional structure of the moving block of the valve tappet grinding fixture of this utility model;

[0032] Figure 7 This is a cross-sectional structural diagram of the valve tappet grinding fixture of this utility model when the valve tappet is fixed by the fixing block.

[0033] In the diagram: 1. Processing box; 2. Drive motor; 3. Telescopic push rod; 4. Moving block; 401. First inclined plane; 402. Second inclined plane; 5. Fixed block; 501. Third inclined plane; 502. Fourth inclined plane; 503. Slider; 6. Support plate; 601. Slide groove; 7. Support rod; 8. Top pad; 9. Protective cover; 10. Mounting plate; 11. Horizontal telescopic rod; 12. Vertical telescopic rod; 13. Adjusting motor; 14. Mounting rod; 15. Liquid guiding hose; 16. Storage box; 17. Drain pipe; 18. Hot air pipe; 19. Fan; 20. Heating component. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] The telescopic push rod 3, the horizontal telescopic rod 11, and the vertical telescopic rod 12 in this utility model are all common electrical devices in the prior art. This application will not elaborate on their models or internal structures.

[0036] like Figures 1-7 As shown, this utility model provides a technical solution: a valve tappet grinding fixture, including a machining box 1. The machining box 1 serves as the main structure of the entire fixture, providing installation space and working environment for other components. The box door at its front end facilitates the installation and removal of valve tappets and the maintenance and inspection of the interior by the operator. A control panel is connected to the side of the machining box 1, which integrates the control functions of each component. The operator can conveniently start, stop, and adjust the operating parameters of each component through the control panel to achieve precise control of the entire grinding process.

[0037] The machining box 1 is connected to a horizontal telescopic rod 11. The driving end of the horizontal telescopic rod 11 is connected to a vertical telescopic rod 12. The driving end of the vertical telescopic rod 12 is connected to an adjusting motor 13. The driving end of the adjusting motor 13 is connected to a mounting rod 14. A grinding head is mounted on the side of the mounting rod 14. The adjusting motor 13 is used to adjust the direction angle of the mounting rod 14, thereby changing the angle of the grinding head. A protective shell is provided on the outer end of the adjusting motor 13 to protect the adjusting motor 13 from the influence of chips, coolant, etc. generated during the grinding process, ensuring the normal operation of the motor. The horizontal telescopic rod 11 can drive the vertical telescopic rod 12 and its connected components to move horizontally. The vertical telescopic rod 12 can make the adjusting motor 13, the mounting rod 14, and the grinding head move vertically. This design allows the grinding head to be accurately aligned with the part of the valve tappet that needs to be ground, meeting the grinding requirements of different valve tappets and improving the versatility and machining accuracy of the tooling.

[0038] The machining box 1 is equipped with a fluid guiding hose 15. The rear end of the machining box 1 is connected to a storage box 16, which is equipped with a pump. One end of the fluid guiding hose 15 is connected to the pump, and the other end is connected to the mounting rod 14. The storage box 16 stores coolant. When the pump is working, the coolant is delivered to the mounting rod 14 through the fluid guiding hose 15. The coolant flows to the vicinity of the grinding head to cool and lubricate the grinding process.

[0039] The machining chamber 1 is equipped with a drive motor 2, and a fixing mechanism is installed on the upper end of the drive motor 2. The drive motor 2 is the power source for the movement of the fixing mechanism. The drive motor 2 drives the valve tappet to rotate at high speed. A protective cover 9 is connected inside the machining chamber 1, and the drive motor 2 is located inside the protective cover 9. The protective cover 9 can prevent metal chips, dust and other impurities generated during the grinding process from entering the drive motor 2, avoiding motor failure. A mounting plate 10 is connected inside the protective cover 9. The mounting plate 10 has heat dissipation slots. The heat generated by the drive motor 2 during operation is dissipated through these heat dissipation slots to ensure that the motor operates within a suitable temperature range and extend the service life of the motor. A drainage slot is opened at the lower end of the protective cover 9, and a drain pipe 17 is connected to the lower end of the machining chamber 1, which is used to drain the waste liquid generated during the grinding process.

[0040] The fixing mechanism includes: a telescopic push rod 3, a moving block 4, a fixed block 5, and a support plate 6. The moving block 4 is connected to the driving end of the telescopic push rod 3. The telescopic push rod 3 pushes the moving block 4 up and down by its own extension and retraction. A first inclined surface 401 is provided on the outer side of the top of the moving block 4, and a second inclined surface 402 is provided on the inner side of the bottom of the moving block 4. The first inclined surface 401 and the second inclined surface 402 are key structures for controlling the fixed block 5. The fixed block 5 is located at the outer end of the moving block 4. A groove is provided in the fixed block 5. The upper wall of the groove is set as a third inclined surface 501, and the lower wall is set as a fourth inclined surface 502. The first inclined surface 401 and the third inclined surface 501 are slidably connected, and the second inclined surface 402 and the fourth inclined surface 502 are slidably connected. The surfaces of the first inclined surface 401, the second inclined surface 402, the third inclined surface 501, and the fourth inclined surface 502 are all smooth.

[0041] When the telescopic push rod 3 pushes the moving block 4 upward, the first inclined surface 401 of the moving block 4 and the third inclined surface 501 of the fixed block 5 slide in contact with each other. Due to the force, under the constraint of the slide groove 601 of the support plate 6 and the slider 503, the fixed block 5 will expand outward along the slide groove 601. Similarly, when the telescopic push rod 3 falls back and the moving block 4 descends, the second inclined surface 402 and the fourth inclined surface 502 interact, causing the fixed block 5 to contract inward. This design cleverly utilizes the mechanical principle of inclined surfaces to realize the clamping and releasing action of the valve tappet.

[0042] The support plate 6 is located at the lower end of the fixed block 5. The drive end of the telescopic push rod 3 is slidably connected to the support plate 6. The support plate 6 has a groove 601. The lower end of the fixed block 5 is connected to a slider 503, which is slidably connected to the groove 601. The groove 601 is an inverted T-shaped groove, and the slider 503 is an inverted T-shaped block. In this way, the slider 503 will not be pulled out from the groove 601, so that the fixed block 5 can only slide on the upper end of the support plate 6 and will not be pushed up by the moving block 4. This ensures the stability and accuracy of the fixed block 5 during the movement process, and thus ensures the positional accuracy of the valve tappet during the fixing and grinding process.

[0043] The fixing mechanism also includes: a support rod 7, which is connected to the upper end of the support plate 6 and is located in the gap between adjacent fixing blocks 5. The fixing mechanism also includes: a top pad 8, which is connected to the upper end of the support rod 7 and is located at the upper end of the fixing block 5. The valve tappet is placed at the outer end of the top pad 8 to support the valve tappet. A cotton pad is connected to the outer end of the fixing block 5, and the surface of the cotton pad is provided with anti-slip texture.

[0044] The upper end of the processing box 1 is connected to a hot air pipe 18, and a fan 19 and a heating component 20 are connected inside the hot air pipe 18. The heating component 20 is composed of multiple electric heating rods. The fan 19 and the heating component 20 work together to blow hot air into the processing box 1. A dust filter screen is installed at the upper end of the hot air pipe 18, which can effectively prevent external dust from entering the processing box 1, ensuring a clean processing environment and avoiding secondary pollution of the valve lifter surface by dust.

[0045] Working principle: When in use, the valve tappet is placed on the top pad 8. Through the control panel, the telescopic push rod 3 is activated to push the moving block 4 upward. The first inclined surface 401 of the moving block 4 interacts with the third inclined surface 501 of the fixed block 5. Under the constraint of the sliding groove 601 and the slider 503, the fixed block 5 expands outward. The cotton pad at its outer end is tightly attached to the inner wall of the valve tappet, firmly clamping and fixing the valve tappet. Then, the drive motor 2 drives the fixing mechanism and the valve tappet to rotate at high speed.

[0046] According to the grinding requirements of the valve tappet, the position of the grinding head is precisely adjusted by operating the horizontal telescopic rod 11 and the vertical telescopic rod 12 through the control panel. The angle of the grinding head is adjusted by adjusting the motor 13 so that the grinding head contacts the surface of the high-speed rotating valve tappet for processing. At the same time, the pump in the storage tank 16 is started to deliver coolant to the vicinity of the grinding head through the liquid guide hose 15 for cooling and lubrication. The mixture of coolant and debris is finally discharged through the drain pipe 17.

[0047] After grinding is completed, operate the control panel to make the telescopic push rod 3 fall back and the moving block 4 descend. Its second inclined surface 402 interacts with the fourth inclined surface 502 of the fixed block 5, and the fixed block 5 retracts and moves inward to release the fixation of the valve tappet. If drying is required, start the fan 19 and heating component 20 in the hot air pipe 18 to dry the valve tappet.

[0048] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0049] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A valve tappet grinding fixture, comprising a machining box (1), characterized in that: The processing box (1) is equipped with a drive motor (2), and the upper end of the drive motor (2) is equipped with a fixing mechanism, which includes: Telescopic push rod (3) and moving block (4), the moving block (4) is connected to the driving end of telescopic push rod (3), the top outer side of the moving block (4) is provided with a first inclined surface (401), and the bottom inner side of the moving block (4) is provided with a second inclined surface (402); A fixed block (5) is located at the outer end of the movable block (4). A groove is provided in the fixed block (5). The upper wall of the groove is set as a third inclined surface (501) and the lower wall is set as a fourth inclined surface (502). The first inclined surface (401) is slidably connected to the third inclined surface (501), and the second inclined surface (402) is slidably connected to the fourth inclined surface (502). A support plate (6) is located at the lower end of a fixed block (5). The drive end of the telescopic push rod (3) is slidably connected to the support plate (6). A groove (601) is provided in the support plate (6). A slider (503) is connected to the lower end of the fixed block (5). The slider (503) is slidably connected to the groove (601).

2. The valve tappet grinding fixture according to claim 1, characterized in that: The fixing mechanism also includes a support rod (7), which is connected to the upper end of the support plate (6) and is located in the gap between adjacent fixing blocks (5).

3. The valve tappet grinding fixture according to claim 2, characterized in that: The fixing mechanism also includes a top pad (8), which is connected to the upper end of the support rod (7) and is located at the upper end of the fixing block (5). The outer end of the fixing block (5) is connected to a cotton pad, and the surface of the cotton pad is provided with an anti-slip texture.

4. The valve tappet grinding fixture according to claim 1, characterized in that: The processing box (1) is connected to a protective cover (9), the drive motor (2) is located inside the protective cover (9), the protective cover (9) is connected to a mounting plate (10), the mounting plate (10) has a heat dissipation slot, and the lower end of the protective cover (9) has a water flow slot.

5. A valve tappet grinding fixture according to claim 1, characterized in that: The processing box (1) is connected to a horizontal telescopic rod (11), the driving end of the horizontal telescopic rod (11) is connected to a vertical telescopic rod (12), and the driving end of the vertical telescopic rod (12) is connected to an adjusting motor (13).

6. A valve tappet grinding fixture according to claim 5, characterized in that: The drive end of the regulating motor (13) is connected to a mounting rod (14), a grinding head is mounted on the side end of the mounting rod (14), and a protective shell is provided on the outer end of the regulating motor (13).

7. A valve tappet grinding fixture according to claim 6, characterized in that: The processing box (1) is equipped with a liquid guiding hose (15), and the rear end of the processing box (1) is connected to a storage box (16). The storage box (16) is equipped with a pump. One end of the liquid guiding hose (15) is connected to the pump, and the other end is connected to the mounting rod (14).

8. A valve tappet grinding fixture according to claim 1, characterized in that: The processing box (1) is connected to a control panel on its side, and a door is provided at the front end of the processing box (1). The processing box (1) is connected to a drain pipe (17) at its lower end.

9. A valve tappet grinding fixture according to claim 1, characterized in that: The processing box (1) is connected to a hot air pipe (18) at the upper end. A fan (19) and a heating component (20) are connected inside the hot air pipe (18). The heating component (20) is composed of multiple electric heating rods. A dust filter screen is provided at the upper end of the hot air pipe (18).

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