Engine valve polishing device and method

Abstract

The application relates to the technical field of engine accessory machining, and particularly discloses an engine valve polishing device, which comprises a polishing table, a support arranged on the polishing table, a rotating handle rotatably connected to the polishing table, an accommodating cavity arranged at one end of the rotating handle facing the support, a plurality of elastic blocks filled in the accommodating cavity, the sizes of the elastic blocks gradually increasing from the opening of the accommodating cavity to the inside of the accommodating cavity, a pressure spring arranged at the bottom of the accommodating cavity, a first driving mechanism arranged on the polishing table and used for driving the rotating handle to rotate, a sliding seat slidably connected to the polishing table, the sliding seat, the support and the rotating handle being arranged on the same straight line, a plurality of push rods rotatably connected to one side of the sliding seat close to the support, and a second driving mechanism arranged on the polishing table and used for driving the sliding seat to slide. The polishing device solves the problem that the two ends of the valve need to be clamped respectively in the traditional valve polishing process, and the clamping process of the valve is relatively complicated and low in efficiency.

Description

Technical Field

[0001] This application relates to the field of engine parts processing technology, and specifically discloses an engine valve grinding device and method. Background Technology

[0002] Among engine components, valves are specifically responsible for introducing air into the engine and expelling exhaust gases after combustion. They mainly consist of a head and a stem. During valve manufacturing, polishing the valve surface is an essential step. The main purpose of polishing is to eliminate any unevenness or roughness on the valve surface, reducing its roughness and resulting in a smoother, more even surface that allows the valve to mesh properly with other engine components.

[0003] In existing valve polishing processes, a triangular chuck is typically used to clamp the valve stem, and a push rod is used to hold the valve head in place. A high-speed rotating motor then drives the push rod, triangular chuck, and valve to rotate. During rotation, sandpaper or sanding belt is applied to the valve surface to create a smoother surface for subsequent passivation and painting. Because this method requires clamping both ends of the valve separately, the clamping process is cumbersome, complex, and inefficient. Therefore, the inventor has provided an engine valve polishing device and method to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the traditional valve polishing process requires clamping both ends of the valve separately, which makes the valve clamping process cumbersome, complicated and inefficient.

[0005] To achieve the above objectives, the basic solution of the present invention provides an engine valve grinding device, comprising:

[0006] Polishing table;

[0007] A support is provided on the grinding table;

[0008] A rotating handle is rotatably connected to the grinding table. One end of the rotating handle facing the support has a cavity, which is filled with several elastic blocks. The size of the elastic blocks increases sequentially from the opening of the cavity to the inside of the cavity. A pressure spring is provided at the bottom of the cavity. The grinding table is provided with a first driving mechanism for driving the rotating handle to rotate.

[0009] The slide is slidably connected to the grinding table, and the slide, support and rotating handle are located on the same straight line. Several push rods are rotatably connected to the side of the slide near the support. The grinding table is provided with a second driving mechanism for driving the slide to slide.

[0010] The principle and effect of this basic scheme are as follows:

[0011] Compared with the prior art, the present invention features elastic blocks whose dimensions increase progressively from the opening of the cavity to the interior of the cavity. This means that as the valve stem extends from the opening into the cavity, the force exerted by the elastic blocks on the valve stem gradually increases. This allows the valve stem to clamp the valve circumference as it extends into the cavity. Subsequently, the second drive mechanism can move the slide block, causing the push rod to move the valve head. This not only clamps the valve head but also allows the valve stem to extend into the cavity for clamping. Compared with the traditional method of clamping both ends of the valve separately, the present invention can fix the valve more efficiently and conveniently.

[0012] Compared with the prior art, the present invention provides a pressure spring in the cavity. When the slide block presses the valve against the cavity through the push rod, the force of the second drive mechanism is greater than the force of the pressure spring, so that the valve can be located in the cavity. When the second drive mechanism drives the slide block to move in the opposite direction, the elastic potential energy of the second spring drives the valve to move outward, thereby making it easier to remove the polished valve.

[0013] Furthermore, the slide, support, and rotating handle are all multiple units arranged in a circumferential array. The first driving mechanism includes a first motor, a first gear ring driven by the first motor, and first gears respectively located at the ends of each rotating handle and meshing with the first gear ring. With this arrangement, multiple rotating handles can be driven to rotate simultaneously by the first driving mechanism, thus simultaneously grinding multiple valves and improving the efficiency of valve grinding.

[0014] Furthermore, the second drive mechanism includes a second motor, a rotating ring driven by the second motor, and helical teeth on the rotating ring. Each slide block has locking teeth at its bottom that mesh with the helical teeth. By driving the rotating ring to rotate with the second motor, and utilizing the meshing between the helical teeth and the locking teeth, multiple slide blocks can be moved simultaneously. This also provides a self-locking effect, preventing the slide blocks from moving backward during valve grinding and causing a safety accident.

[0015] Furthermore, the inner sidewall of the rotating ring is provided with a second gear ring, and the output shaft of the second motor is provided with a second gear that meshes with the second gear ring. The cooperation between the second gear ring and the second gear facilitates the second motor to drive the rotating ring.

[0016] Furthermore, the support is provided with a placement groove adapted to the cross-section of the valve, and a sanding strip is placed inside the placement groove. The sanding strip ensures that the placement groove not only provides support during valve installation but also serves as a surface for polishing the valve surface.

[0017] Furthermore, an elastic layer is provided between the abrasive strip and the inner wall of the placement groove, and an air cavity is provided inside the support, which is connected to an air-cooling pipe. An air guide channel is provided on the support, located between the abrasive strips and connected to the air cavity. The elastic layer ensures tight contact between the abrasive strip and the valve surface, preventing gaps that could affect the polishing effect. The air cavity, air-cooling pipe, and air guide channel cool the valve surface, preventing it from overheating.

[0018] Furthermore, a rotating block is rotatably connected to the side of the slide near the support, and the push rod is located at the end of the rotating block. The rotating block facilitates the connection of multiple push rods, allowing them to move synchronously.

[0019] Furthermore, the slide end is provided with a connecting sleeve, and the connecting sleeve has a rotating cavity. One end of the rotating block is rotatably connected to the rotating cavity, and a plurality of ball bearings are filled between the outer wall of the rotating block and the inner wall of the rotating cavity. The connecting sleeve facilitates the connection of the rotating block, while the ball bearings reduce the friction between the rotating block and the rotating cavity.

[0020] Based on the same inventive concept, the present invention provides a method for polishing engine valves, including polishing the valves using the above-mentioned engine valve polishing device.

[0021] Furthermore, the steps for polishing the valves using the aforementioned engine valve polishing device are as follows:

[0022] Step S1: Place the valve on the support, with the valve stem facing the rotating cavity and extending into the cavity, and the valve head facing the slide.

[0023] Step S2: Drive the slide block to move towards the support through the second drive mechanism, so that the push rod approaches the head of the valve and pushes the valve into the cavity until the pressure spring is compressed and the elastic block clamps the valve rod.

[0024] Step S3: Drive the handle to rotate through the first drive mechanism, which in turn drives the valve and pushrod to rotate together, while simultaneously making the sanding strip close to the valve surface for polishing.

[0025] Step S4: After the valve is polished, the second drive mechanism drives the slide away from the support, and the pressure spring pops out the valve stem, so the polished valve can be removed.

[0026] Using this method to grind the valve, the second drive mechanism pushes the slide to move, causing the push rod to move the valve head. This not only tightens the valve head but also allows the valve stem to extend into the cavity for clamping. Compared to the traditional method of clamping both ends of the valve separately, this method can fix the valve more efficiently and conveniently. Furthermore, when the second drive mechanism drives the slide to move in the opposite direction, the elastic potential energy of the second spring drives the valve to move outward, making it easy to remove the ground valve. Attached Figure Description

[0027] 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.

[0028] Figure 1 A schematic diagram of an engine valve polishing device according to an embodiment of this application is shown;

[0029] Figure 2 A front view of an engine valve grinding device according to an embodiment of this application is shown;

[0030] Figure 3 This illustration shows a schematic diagram of the valve connection in an engine valve polishing device according to an embodiment of this application;

[0031] Figure 4 A cross-sectional view of the support in an engine valve grinding device according to an embodiment of this application is shown. Detailed Implementation

[0032] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0033] The reference numerals in the accompanying drawings of the instruction manual include: 1. Grinding table; 2. Rotating ring; 3. Helical gear; 4. Second gear ring; 5. Second gear; 6. Slide seat; 7. Limit seat; 8. Support; 9. Connecting sleeve; 10. Rotating block; 11. Valve; 12. Rotary handle; 13. First gear; 14. First gear ring; 15. Second motor; 16. First motor; 17. Elastic block; 18. Push rod; 19. Ball bearing; 20. Elastic layer; 21. Air guide channel; 22. Sticker; 23. Sanding strip.

[0034] An engine valve grinding device, performing, for example Figures 1 to 4 As shown, it includes:

[0035] Grinding table 1: Grinding table 1 is a prototype and is installed and fixed by several support legs.

[0036] Support 8: Multiple supports 8 are arranged in a circumferential array on the grinding table 1. Each support 8 has a mounting groove that matches the cross-section of the valve 11, such as... Figure 4 As shown, an elastic layer 20 is provided on the wall of the placement groove, and a sanding strip 23 is provided on the pop-out layer. The sanding strip 23 is adhered to the surface of the elastic layer 20 by a sticker 22. An air chamber is provided in the support 8, and the air chamber is connected to an air-cooling pipe. An air pump is provided on the air-cooling pipe. An air guide channel 21 is provided on the support 8 between adjacent sanding strips 23 and connected to the air chamber. The air supply from the air-cooling pipe can not only cool the surface of the valve 11, but also blow out impurities during the polishing process.

[0037] Rotary handle 12: The number of rotary handles 12 corresponds to the number of supports 8 and they are arranged in a circular array on the grinding table 1. The rotary handles 12 are rotatably connected to the grinding table 1. Correspondingly, the grinding table 1 is provided with a fixed ring. One end of each rotary handle 12 is rotatably connected to the fixed ring and extends into the fixed ring. The grinding table 1 is provided with a first drive mechanism for driving the rotary handles 12 to rotate. The first drive mechanism includes a first motor 16 provided on the lower surface of the grinding table 1, a first gear ring 14 located at the center of the grinding table 1 and driven to rotate by the first motor 16, and a first gear 13 respectively provided at the end of each rotary handle 12 located in the fixed ring and meshing with the first gear ring 14. The rotary handles 12 are distributed radially along the grinding table 1. The other end of each rotary handle 12 facing the outside of the grinding table 1 is provided with a cavity. The cavity is filled with a number of elastic blocks 17. The size of the elastic blocks 17 increases sequentially from the opening of the cavity to the inside of the cavity. A pressure spring is provided at the bottom of the cavity.

[0038] Slide 6: The slide 6 corresponds in number to the support 8 and is arranged in a circular array on the grinding table 1. The slide 6 is slidably connected to the grinding table 1, and the slide 6, support 8 and rotating handle 12 are located on the same straight line. The grinding table 1 is provided with a second driving mechanism for driving the slide 6 to slide. The second driving mechanism includes a second motor 15 provided on the lower surface of the grinding table 1, a rotating ring 2 driven by the second motor 15, and a spiral tooth 3 provided on the rotating ring 2. Specifically, the inner side wall of the rotating ring 2 is provided with a second gear ring 4. The output shaft of the second motor 15 is vertically upward and is provided with a second gear 5 that meshes with the second gear ring 4. The bottom of each slide 6 is provided with a locking tooth that meshes with the spiral tooth 3. Multiple limiting seats 7 are fixedly provided on the grinding table 1, and each slide 6 is slidably connected to each limiting seat 7. The slide 6 is provided with a connecting sleeve 9 on the side near the support 8. The end of the connecting sleeve 9 is provided with a rotating cavity. A rotating block 10 is rotatably connected in the rotating cavity. One end of the rotating block 10 extends into the rotating cavity and is connected to multiple push rods 18. The other end of the rotating block 10 is located in the cavity and is provided with several balls 19 between it and the inner wall of the cavity.

[0039] In the implementation of this invention, the operator first places each valve 11 to be polished onto its respective support, with the stem end of the valve 11 positioned within the cavity of the rotating handle 12 and the head of the valve 11 close to each push rod 18. Then, the second motor 15 is activated. The second motor 15 drives the rotating ring 2 to rotate via the second gear 5 and the second gear ring 4, causing each slide block 6 to move towards the circular area of ​​the polishing table 1. During this process, the push rod 18 assembly pushes the valve 11, causing the stem of the valve 11 to move into the cavity of the rotating handle 12. As the stem of the valve 11 extends into the cavity, the force exerted by the elastic block 17 on the stem of the valve 11 gradually increases, and the pressure spring is compressed. At this time, the force of the second drive mechanism is greater than the force of the pressure spring. The elasticity of the elastic block 17 clamps the valve stem of the valve 11 into the cavity of the rotating handle 12. At this time, the first motor 16 is started. The first motor 16 drives all the rotating handles 12 and valves 11 to rotate through the first gear ring 14 and the first gear 13. During the rotation, the valve 11 contacts the sanding strip 23 in the placement groove for polishing. At the same time, the air pump supplies air to cool and remove impurities from the surface of the valve 11, thus achieving the purpose of polishing the surface of the valve 11. After polishing is completed, the first motor 16 is turned off, and the second motor 15 reverses, causing the slide 6 to move away from the support 8. The thrust on the valve 11 gradually disappears. At this time, the elastic potential energy of the second spring drives the valve 11 to move outward, and the operator can remove the polished valve 11.

[0040] Based on the same inventive concept, the present invention provides a method for polishing engine valve 11, comprising polishing the valve 11 using the aforementioned engine valve 11 polishing device, the steps of which are as follows:

[0041] Step S1: The worker first places each valve 11 that needs to be polished onto each support, so that the end of the valve 11 is located in the cavity of the rotating handle 12, and the head of the valve 11 is close to each push rod 18.

[0042] Step S2: Start the second motor 15. The second motor 15 drives the rotating ring 2 to rotate through the second gear 5 and the second gear ring 4, so that each slide 6 moves toward the circular part of the grinding table 1. During this process, the push rod 18 assembly pushes the valve 11 and moves the valve 11 rod into the cavity of the rotating handle 12. As the valve 11 rod extends into the cavity, the force of the elastic block 17 on the valve 11 rod gradually increases, and the pressure spring is compressed. At this time, the force of the second drive mechanism is greater than the force of the pressure spring. The elasticity of the elastic block 17 makes the valve 11 rod clamped in the cavity of the rotating handle 12.

[0043] Step S3: Start the first motor 16. The first motor 16 can drive all the rotating handles 12 and valves 11 to rotate through the first gear ring 14 and the first gear 13. During the rotation, the valves 11 contact the sanding strips 23 in the placement groove for polishing. At the same time, the air pump supplies air to cool and remove impurities from the surface of the valves 11, thus achieving the purpose of polishing the surface of the valves 11.

[0044] Step S4: After polishing is completed, turn off the first motor 16 and at the same time reverse the second motor 15, so that the slide 6 moves away from the support 8. The thrust on the valve 11 gradually disappears. At this time, the elastic potential energy of the second spring drives the valve 11 to move outward. The staff can then remove the polished valve 11.

[0045] Using this method to grind the valve 11, the second drive mechanism pushes the slide 6 to move, causing the push rod 18 to push the head of the valve 11 to move. This not only provides a clamping effect on the head of the valve 11, but also allows the valve rod to extend into the cavity for clamping. Compared with the traditional method of clamping both ends of the valve 11 separately, this method can fix the valve 11 more efficiently and conveniently. Furthermore, when the second drive mechanism drives the slide 6 to move in the opposite direction, the elastic potential energy of the second spring drives the valve 11 to move outward, making it easier to remove the ground valve 11.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An engine valve grinding device, characterized in that, include: Polishing table; A support is provided on the grinding table; A rotating handle is rotatably connected to the grinding table. One end of the rotating handle facing the support has a cavity, which is filled with several elastic blocks. The size of the elastic blocks increases sequentially from the opening of the cavity to the inside of the cavity. A pressure spring is provided at the bottom of the cavity. The grinding table is provided with a first driving mechanism for driving the rotating handle to rotate. A slide block is slidably connected to the grinding table, and the slide block, support and rotating handle are located on the same straight line. Several push rods are rotatably connected to the side of the slide block near the support. The grinding table is provided with a second driving mechanism for driving the slide block to slide. The slide, support and handle are all of several and distributed in a circumferential array; The first drive mechanism includes a first motor, a first gear ring driven to rotate by the first motor, and first gears respectively disposed at the ends of each rotating handle and meshing with the first gear ring; The second drive mechanism includes a second motor, a rotating ring driven by the second motor, and helical teeth on the rotating ring. The bottom of each slide is provided with locking teeth that mesh with the helical teeth. The inner sidewall of the rotating ring is provided with a second gear ring, and the output shaft of the second motor is provided with a second gear that meshes with the second gear ring. The support is provided with a placement groove adapted to the cross-section of the valve, and a sand bar is provided in the placement groove.

2. The engine valve grinding device according to claim 1, characterized in that, An elastic layer is provided between the sand strip and the inner wall of the placement groove. An air cavity is provided in the support, and the air cavity is connected to an air-cooling pipe. An air guiding channel is provided on the support between the sand strip and connected to the air cavity.

3. An engine valve polishing device according to claim 1 or 2, characterized in that, A rotating block is rotatably connected to the side of the slide near the support, and the push rod is located at the end of the rotating block.

4. The engine valve grinding device according to claim 3, characterized in that, The slide block is provided with a connecting sleeve at its end, and a rotating cavity is provided inside the connecting sleeve. One end of the rotating block is rotatably connected to the rotating cavity, and a number of balls are filled between the outer wall of the rotating block and the inner wall of the rotating cavity.

5. A method for grinding engine valves, characterized in that, This includes using the engine valve polishing apparatus according to any one of claims 1 to 4 to polish the valves.

6. The method for grinding engine valves according to claim 5, characterized in that, The steps for polishing the valve using the engine valve polishing apparatus according to any one of claims 1 to 4 are as follows: Step S1: Place the valve on the support, with the valve stem facing the rotating cavity and extending into the cavity, and the valve head facing the slide. Step S2: Drive the slide block to move towards the support through the second drive mechanism, so that the push rod approaches the head of the valve and pushes the valve into the cavity until the pressure spring is compressed and the elastic block clamps the valve rod. Step S3: Drive the handle to rotate through the first drive mechanism, which in turn drives the valve and pushrod to rotate together, while simultaneously making the sanding strip close to the valve surface for polishing. Step S4: After the valve is polished, the second drive mechanism drives the slide away from the support, and the pressure spring pops out the valve stem, so the polished valve can be removed.

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