Cam surface laser texturing processing device based on profiling method and use method

Abstract

The present invention provides a cam surface laser texturing processing device and method for use based on the profiling method, comprising a positioning unit including a base, a limiting post, and an elastic component. The limiting post and the elastic component are both fixed to the base, the limiting post is plugged into the synchronization plate of the transmission unit, and the top of the elastic component is fixedly connected to the synchronization plate. A stepper motor is fixed to the synchronization plate, the output shaft of the stepper motor is connected to the limiting cam transmission shaft, a limiting cam is provided on the limiting cam transmission shaft, a driven shaft is provided on one side of the limiting cam transmission shaft, and is mounted on the synchronization plate via a supporting device. A transmission wheel is provided at one end of the driven shaft, and a cam to be processed is mounted at the other end. The driving wheel on the output shaft of the stepper motor drives the transmission wheel to rotate synchronously via a transmission member, and the limiting cam and the cam to be processed have the same structure. The limiting unit contacts the edge of the limiting cam. This solves the high cost of traditional methods for processing cam surface laser texturing and solves the problem that the same equipment cannot process cams of different shapes.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser texturing processing equipment, and in particular relates to a cam surface laser texturing processing device based on a profiling method and a use method thereof. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The cam-tappet contact pair is a critical friction pair in the engine valvetrain. However, high temperatures can cause severe wear on the friction pair's surface, impacting the entire valvetrain's operating precision and engine performance. To address this issue, existing technologies offer surface texturing technologies that effectively reduce friction and wear, store lubricating oil, and absorb wear debris. Existing surface texturing methods primarily include mechanical etching, electrical discharge machining (EDM), chemical etching, and laser surface texturing. Due to the irregular structure of the cam, chemical etching is a common method for cam texturing. Compared to laser processing, chemical etching requires significant time to research the composition, concentration, and etching time of the etching solution. Existing technologies offer three-dimensional laser processing, but this approach is more expensive than planar laser processing. Using a planar laser to texture the cam's outer surface requires mounting the cam on a three-dimensional coordinate platform, which is also expensive, increasing processing costs. Therefore, existing laser processing technologies for cam surface texturing are often limited to processing structures with a single shape, limiting their adaptability to diverse workpieces. Therefore, there is an urgent need to develop a processing device that simplifies the operation of cam surface texturing and increases the types of cams that can be processed. Summary of the Invention

[0004] In response to the above problems, the present invention provides a cam surface laser texturing processing device and a method of use based on the profiling method, which solves the problem of high cost of traditional methods of processing cam surface laser texturing. At the same time, it realizes the processing of cam surface laser texturing through plane processing, ensuring the overall horizontal stability of the device, and the problem of difficulty in improving processing accuracy; ensuring that the laser focus is always on the cam surface to achieve uniform processing; solving the problem that the same equipment cannot process cams of different shapes, thereby improving the applicability of the device.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, the present invention provides a cam surface laser texturing processing device based on a profiling method, comprising: a positioning unit, a limiting unit, and a transmission unit; the limiting unit and the transmission unit are both arranged on the positioning unit, and the limiting unit is located on one side of the transmission unit;

[0007] The positioning unit includes a base, a limiting column and an elastic component, wherein the limiting column and the elastic component are fixedly arranged on the base, the limiting column is plugged into the synchronization plate of the transmission unit, and the top end of the elastic component is fixedly connected to the synchronization plate;

[0008] The transmission unit further includes a stepper motor, a limit cam transmission shaft, a driven shaft, a supporting device and a transmission wheel; the stepper motor is fixedly arranged on the synchronization plate, the output shaft of the stepper motor is connected to the limit cam transmission shaft, a limit cam is provided on the limit cam transmission shaft, the driven shaft is provided on one side of the limit cam transmission shaft, the driven shaft is arranged on the synchronization plate through the supporting device, a transmission wheel is provided at one end of the driven shaft, and a cam to be processed is detachably mounted on the other end; the driving wheel on the output shaft of the stepper motor drives the transmission wheel through a transmission member, the limit cam rotates synchronously with the cam to be processed, and the limit cam and the cam to be processed have the same structure;

[0009] The limiting unit contacts the edge of the limiting cam. When the limiting cam rotates, the height of the limiting unit remains unchanged, and the synchronization plate floats up and down, which facilitates the laser to process the gear to be processed from above.

[0010] Furthermore, the elastic component is a spring; a plurality of the springs are provided between the base and the synchronization plate for controlling the synchronization plate to float along the limiting column.

[0011] Furthermore, at least four limiting columns are provided and are arranged near the four corners of the base; they are used to guide the synchronization plate and ensure the stability of the synchronization plate when floating up and down.

[0012] Furthermore, the stepper motor is fixed to the synchronization plate via a stepper motor fixing plate, both ends of the stepper motor fixing plate are fixedly connected to the synchronization plate via connectors, and the stepper motor fixing plate is a strip of flat iron or stainless steel strip.

[0013] Furthermore, a bearing is provided between the driven shaft and the supporting device, and the supporting device is fixedly connected to the synchronization plate via a supporting fixing member.

[0014] Furthermore, the transmission member is a chain or a synchronous toothed belt; when the transmission member is a chain, the drive wheel and the transmission wheel are both sprockets; when the transmission member is a synchronous toothed belt, the drive wheel and the transmission wheel are both synchronous pulleys.

[0015] Furthermore, the limiting unit consists of a telescopic positioning rod and a horizontal limiting rod. The bottom of the telescopic positioning rod is connected to the base through a limiting fixing piece, and the top of the telescopic positioning rod is connected to the horizontal limiting rod. A positioning knob is provided on the telescopic positioning rod for controlling the telescopic movement and fixation of the telescopic positioning rod.

[0016] Furthermore, the base is fixed by a device positioning piece to prevent the base from jumping during operation.

[0017] In a second aspect, the present invention further provides a method for using a cam surface laser texturing processing device based on a profiling method, comprising the following steps:

[0018] S1. Use the positioning knob to extend the telescopic rod so that the limit cam and the limit rod are not in contact.

[0019] S2. Prepare two identical cams, one as a limit cam mounted on the drive shaft, and the other as a processing cam mounted on the drive shaft, and both are placed in the same orientation;

[0020] S3. Lower the limit rod so that it is always in contact with the limit cam;

[0021] S4. When the laser focus is on the surface of the processing cam, the control program adjusts the speed of the stepper motor to process the cam to be processed.

[0022] Furthermore, the laser processing method includes but is not limited to pulse laser processing and continuous laser processing, and a suitable laser processing method can be selected according to the material of the cam, processing accuracy requirements, etc.

[0023] Compared with the prior art, the present invention has the following advantages and positive effects:

[0024] The present invention realizes the laser texturing of the cam surface through plane processing, which solves the problem of high cost of laser texturing of the cam surface through traditional methods. The positioning unit ensures the stability of the synchronous plate when it is horizontally fixed and floating up and down through the limiting columns and multiple elastic components, avoids the synchronous plate from tilting due to different elastic forces of the elastic components, and fixes the horizontal position of each component in the device, providing a stable foundation for processing; the transmission unit enables the limiting cam transmission shaft and the driven shaft to rotate synchronously through the transmission parts, and the limiting cam has the same structure and speed as the cam to be processed, ensuring that the laser processing device can process the cam to be processed evenly; the limiting unit can control the height of the contact position between the limiting cam and the limiting rod through the telescopic positioning rod and the horizontal limiting rod, and then adjust the height of the components on the synchronous plate, so that the laser focus is always in the appropriate position on the cam surface, ensuring processing accuracy.

[0025] The processing method of the present invention is a contour processing method and can be applied to processing cams of various shapes. By selecting cams of the same shape as limit cams and using the contact path of the limit rod to simulate the shape of the limit cam, multiple cams of the same shape can be processed, thereby improving the applicability of the device; the structure and working principle of the device are relatively simple, and the equipment is easy to clean and maintain after the processing is completed; it can be applied to a variety of laser processing methods including pulse laser processing, continuous laser processing, etc., and the appropriate processing method can be selected according to the material of the cam, processing accuracy requirements, etc., thereby increasing the flexibility of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0027] Figure 1 This is a structural diagram of the cam surface laser texturing processing device of the present invention;

[0028] Figure 2 This is an isometric view of the cam surface laser texturing apparatus of the present invention;

[0029] Figure 3 This is a side view of the cam surface laser texturing processing device of the present invention;

[0030] Figure 4 This is a front view of the cam surface laser texturing processing device of the present invention;

[0031] Figure 5 It is a top view of the cam surface laser texturing processing device of the present invention.

[0032] In the figure: 1. Synchronous plate; 2. Elastic component; 3. Device positioning member; 4. Base; 5. Limit column; 6. Transmission wheel; 7. Support fixing member; 8. Positioning knob; 9. Support device; 10. Bearing; 11. Limit fixing member; 12. Driven shaft; 13. Cam to be processed; 14. Telescopic positioning rod; 15. Horizontal limit rod; 16. Limit cam; 17. Limit cam transmission shaft; 18. Transmission member; 19. Stepper motor; 20. Stepper motor fixing plate; 21. Connecting member. DETAILED DESCRIPTION

[0033] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise clearly indicated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprising" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations;

[0035] Traditional three-dimensional laser processing technology directly uses three-dimensional laser processing or plane laser to process the cam's peripheral surface texture. The cam needs to be installed on a three-dimensional coordinate platform, but the price of the three-dimensional coordinate platform equipment is also high, which increases the processing cost. In addition, the existing laser processing technology for processing cam surface texture is often only able to process structures of a single shape, making the equipment less capable of processing different workpieces. In response to these problems, the present invention provides a cam surface laser texturing processing device and method based on the profiling method, which solves the problem of high cost of traditional methods for processing cam surface laser texturing, and at the same time realizes the processing of cam surface laser texturing through plane processing. It solves the problem that the same equipment cannot process cams of different shapes, and improves the applicability of the device. The following technical solutions are combined with the accompanying drawings to illustrate the present invention.

[0036] Example 1

[0037] This embodiment provides a cam surface laser texturing processing device based on the profiling method, such as Figure 1-Figure 5 As shown, it includes: a positioning unit, a limiting unit, and a transmission unit; the limiting unit and the transmission unit are both arranged on the positioning unit, and the limiting unit is located on one side of the transmission unit;

[0038] The positioning unit includes a base 4, a limiting column 5 and an elastic component 2. The limiting column 5 and the elastic component 2 are both fixedly arranged on the base 4. The limiting column 5 is plugged into the synchronization plate 1 of the transmission unit, and the top end of the elastic component 2 is fixedly connected to the synchronization plate 1. The positioning unit is a mechanism for keeping the entire device horizontal. By fixing the horizontal position of the synchronization plate 1, the horizontal position of each component in the device is fixed.

[0039] The transmission unit also includes a stepper motor 19, a limit cam transmission shaft 17, a driven shaft 12, a support device 9 and a transmission wheel 6; the stepper motor 19 is fixedly arranged on the synchronization plate 1, the output shaft of the stepper motor 19 is connected to the limit cam transmission shaft 17, the limit cam transmission shaft 17 is provided with a limit cam 16, the limit cam transmission shaft 17 is provided with the driven shaft 12 on one side, the driven shaft 12 is arranged on the synchronization plate 1 through the support device 9, and one end of the driven shaft 12 is provided with a transmission The wheel 6 has a cam 13 to be processed that is detachably mounted on the other end; the driving wheel on the output shaft of the stepping motor 19 drives the transmission wheel 6 through the transmission member 18, and the limit cam 16 rotates synchronously with the cam 13 to be processed, and the limit cam 16 has the same structure as the cam 13 to be processed; the transmission unit can use a transmission belt to make the limit cam transmission shaft 17 and the driven shaft 12 rotate synchronously, so that the processing cam and the limit cam 16 rotate at the same speed; the support device 9 is responsible for fixing the position of the transmission shaft on the synchronization plate 1.

[0040] The limiting unit contacts the edge of the limiting cam 16. When the limiting cam 16 rotates, the height of the limiting unit remains unchanged, and the synchronous plate 1 floats up and down, which facilitates laser processing from above the gear to be processed.

[0041] Specifically, the shape of the limit cam 16 is exactly the same as that of the cam to be processed 13, and the limit rod is used to limit the height of the contact position between the limit cam 16 and the limit rod, thereby affecting the height of each component on the synchronization plate 1; when installing the cam, the direction of the cam is made the same as the direction of the limit cam 16, so that the two can rotate synchronously, thereby achieving the requirement that the laser focus is always on the cam surface.

[0042] Furthermore, the elastic component 2 is a spring; multiple springs are disposed between the base 4 and the synchronizing plate 1 to control the floating of the synchronizing plate 1 along the limiting posts 5. At least four limiting posts 5 are provided, positioned near the four corners of the base 4, to guide the synchronizing plate 1 and ensure its stability during its up-and-down floating motion.

[0043] Specifically, a plurality of springs are provided in the limiting unit, which provide an upward thrust to the synchronization plate 1; the limiting column 5 ensures the vertical up and down movement of the synchronization plate 1, and at least four limiting columns 5 prevent the synchronization plate 1 from tilting due to different spring forces when floating up and down; the limiting rod controls the height of the synchronization plate 1 by controlling the height of the cam.

[0044] Furthermore, the stepper motor 19 is fixed to the synchronization plate 1 through a stepper motor fixing plate 20, and both ends of the stepper motor fixing plate 20 are fixedly connected to the synchronization plate 1 through connecting pieces 21, and the stepper motor fixing plate 20 is a strip of flat iron or stainless steel belt; these two methods can ensure that the limit cam 16 and the cam to be processed 13 rotate synchronously. Since the limit cam 16 and the cam to be processed 13 have the same structure, the transmission unit can use the transmission belt to make the limit cam transmission shaft 17 and the driven shaft 12 rotate synchronously, so that the processing cam and the limit cam 16 rotate at the same speed, so that the laser processing device can evenly process the cam to be processed 13.

[0045] The above content belongs to a method of profiling, which can be applied to processing cams of various shapes. A cam of the same shape is selected as the limit cam 16. The shape of the limit cam 16 can be simulated through the contact path of the limit rod, and then multiple cams of the same shape can be processed, thereby further improving the applicability of the device of the present invention.

[0046] Furthermore, a bearing 10 is provided between the driven shaft 12 and the supporting device 9 , and the supporting device 9 is fixedly connected to the synchronizing plate 1 via a supporting fixing member 7 .

[0047] Furthermore, the transmission member 18 is a chain or a synchronous toothed belt; when the transmission member 18 is a chain, the drive wheel and the transmission wheel 6 are both sprockets; when the transmission member 18 is a synchronous toothed belt, the drive wheel and the transmission wheel 6 are both synchronous pulleys.

[0048] Furthermore, the limiting unit is composed of a telescopic positioning rod 14 and a horizontal limiting rod 15. The bottom of the telescopic positioning rod 14 is connected to the base 4 through a limiting fixing piece 11, and the top of the telescopic positioning rod 14 is connected to the horizontal limiting rod 15. A positioning knob 8 is provided on the telescopic positioning rod 14 for controlling the telescopic movement and fixation of the telescopic positioning rod 14.

[0049] Furthermore, the base 4 is fixed by a device positioning member 3 to prevent the base 4 from jumping during operation.

[0050] Example 2

[0051] This embodiment also provides a method for using a cam surface laser texturing device based on a profiling method, comprising the following steps:

[0052] S1. Use the positioning knob 8 to extend the telescopic rod so that the limit cam 16 does not contact the limit rod;

[0053] S2 prepares two identical cams, one as a limit cam 16 mounted on the drive shaft, the other as a processing cam mounted on the drive shaft, and both placed in the same orientation;

[0054] S3. Lower the limit rod so that the limit rod is always in contact with the limit cam 16; specifically, by adjusting the height of the telescopic positioning rod 14 in the limit unit, the limit rod is used to limit the height of the contact position of the limit cam 16 and the limit rod, and then adjust the height of each component on the synchronization plate 1 to ensure that the laser focus can be in the appropriate position on the cam surface;

[0055] S4. When the laser focus is on the processing cam surface, the control program adjusts the speed of the stepper motor 19 to process the cam to be processed 13; specifically, check whether the components of the stepper motor 19 and the transmission unit are normal to ensure that the limit cam 16 and the cam to be processed 13 can rotate synchronously; start the stepper motor 19, the stepper motor 19 drives the limit cam transmission shaft 17 to rotate, and the driven shaft 12 rotates synchronously through the transmission member 18, thereby driving the cam to be processed 13 and the limit cam 16 to rotate at the same speed; during the rotation process, the limit cam 16 contacts the limit unit. Since the height of the limit unit remains unchanged when the limit cam 16 rotates, the synchronous plate 1 floats up and down. At this time, the laser is processed from above the cam to be processed 13, and the shape of the limit cam 16 and the contact path of the limit rod are used to simulate the processing shape to achieve laser texturing processing on the cam surface; after the processing is completed, turn off the stepper motor 19 and other equipment, disassemble the cam to be processed 13, and clean and maintain the equipment for next use. Furthermore, the laser processing method includes but is not limited to pulse laser processing and continuous laser processing, and a suitable laser processing method can be selected according to the material of the cam, processing accuracy requirements, etc.

[0056] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. A cam surface laser texturing processing device based on the profiling method, characterized in that: The invention comprises: a positioning unit, a limiting unit and a transmission unit; the limiting unit and the transmission unit are both arranged on the positioning unit, and the limiting unit is located on one side of the transmission unit; The positioning unit includes a base, a limiting column and an elastic component, wherein the limiting column and the elastic component are fixedly arranged on the base, the limiting column is plugged into the synchronization plate of the transmission unit, and the top end of the elastic component is fixedly connected to the synchronization plate; The transmission unit further includes a stepper motor, a limit cam transmission shaft, a driven shaft, a supporting device and a transmission wheel; the stepper motor is fixedly arranged on the synchronization plate, the output shaft of the stepper motor is connected to the limit cam transmission shaft, a limit cam is provided on the limit cam transmission shaft, the driven shaft is provided on one side of the limit cam transmission shaft, the driven shaft is arranged on the synchronization plate through the supporting device, a transmission wheel is provided at one end of the driven shaft, and a cam to be processed is detachably mounted on the other end; the driving wheel on the output shaft of the stepper motor drives the transmission wheel through a transmission member, the limit cam rotates synchronously with the cam to be processed, and the limit cam and the cam to be processed have the same structure; The limit unit contacts the edge of the limit cam. When the limit cam rotates, the height of the limit unit remains unchanged, and the synchronization plate floats up and down, which facilitates the laser to process from above the gear to be processed; the limit unit is composed of a telescopic positioning rod and a horizontal limit rod. The bottom of the telescopic positioning rod is connected to the base through a limit fixing piece, and the top of the telescopic positioning rod is connected to the horizontal limit rod. A positioning knob is provided on the telescopic positioning rod for controlling the telescopic movement and fixation of the telescopic positioning rod.

2. The cam surface laser texturing processing device based on the profiling method according to claim 1, characterized in that: The elastic component is a spring; a plurality of the springs are provided between the base and the synchronization plate for controlling the synchronization plate to float along the limiting column.

3. The cam surface laser texturing processing device based on the profiling method according to claim 2, characterized in that: At least four limiting columns are provided and are arranged near the four corners of the base; they are used to guide the synchronization plate and ensure the stability of the synchronization plate when floating up and down.

4. The cam surface laser texturing processing device based on the profiling method according to claim 1, characterized in that: The stepper motor is fixed to the synchronization plate via a stepper motor fixing plate. Both ends of the stepper motor fixing plate are fixedly connected to the synchronization plate via connectors. The stepper motor fixing plate is a strip of flat iron or a stainless steel strip.

5. The cam surface laser texturing processing device based on the profiling method according to claim 1, characterized in that: A bearing is provided between the driven shaft and the supporting device, and the supporting device is fixedly connected to the synchronous plate via a supporting fixing member.

6. The cam surface laser texturing processing device based on the profiling method according to claim 1, characterized in that: The transmission member is a chain or a synchronous toothed belt; when the transmission member is a chain, the driving wheel and the transmission wheel are both sprockets; when the transmission member is a synchronous toothed belt, the driving wheel and the transmission wheel are both synchronous pulleys.

7. The cam surface laser texturing processing device based on the profiling method according to claim 1, characterized in that: The base is fixed by means of a positioning member to prevent the base from jumping during operation.

8. A method for using a cam surface laser texturing processing device based on a profiling method according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Use the positioning knob to extend the telescopic rod so that the limit cam and the limit rod are not in contact. S2. Prepare two identical cams, one as a limit cam mounted on the drive shaft, and the other as a processing cam mounted on the drive shaft, and both are placed in the same orientation; S3. Lower the limit rod so that it is always in contact with the limit cam; S4. When the laser focus is on the surface of the processing cam, the control program adjusts the speed of the stepper motor to process the cam to be processed.

9. The method for using the cam surface laser texturing processing device based on the profiling method according to claim 8, characterized in that: Laser processing methods include but are not limited to pulse laser processing and continuous laser processing, and a suitable laser processing method can be selected according to the material of the cam and the processing accuracy requirements.

Images