Manufacturing method of automobile accessory valve plate

Abstract

The invention relates to a manufacturing method of an automobile accessory valve plate. The manufacturing method at least comprises the following steps that S1, a strip is continuously punched to form a circular plate body and kidney-shaped holes and via holes in the plate body; s2, chamfers are formed on the outer side edges of the kidney-shaped hole and the via hole in one side face of the sheet body formed in the step S1 through CNC equipment; s3, double-sided grinding is conducted on the two side faces of the sheet body, so that the parallelism of the two side faces meets the requirement of a follow-up procedure datum plane, and meanwhile the roughness meets the precision requirement of follow-up grinding; s4, one side face of the sheet body serves as a positioning datum plane, and the other side face of the sheet body is ground; s5, anodic oxidation is carried out on the sheet body, electrolysis is carried out in a proper electrolyte, and an inorganic oxide film is formed on the surface of the sheet body; and S6, secondary grinding is conducted on the machined face in the step S4 through the sheet body subjected to anodic oxidation, and a product is formed.

Description

Technical Field

[0001] The invention relates to the technical field of automobile accessory valve sheet manufacturing, and in particular to a method for manufacturing an automobile accessory valve sheet. Background Art

[0002] A valve plate for automobile accessories, the valve plate is a circular plate body, a pair of symmetrically arranged waist-shaped holes are provided on the plate body, the waist-shaped holes penetrate the plate body, a through hole is further provided at the core position of the plate body, the valve plate is mounted on the valve body, and rotates relative to the valve body, so that the waist-shaped holes on the valve plate and the channel of the valve body are overlapped up and down to form an open state, and are staggered up and down to form a closed state, so that the valve body is opened or closed by the valve plate, therefore, the parallelism of the two sides of the valve plate is required to be 0.05mm, and the roughness is required to be Ra0.1, so as to ensure that the valve plate meets the working requirements, most of the existing production processes of automobile valve plates are to directly use a cutting machine to perform precision punching, and then use the outer edge as the reference for single-sided grinding after clamping, thereby affecting the performance of the automobile valve plate, and at the same time, no hard anodizing treatment is performed at the end of production, and the automobile valve plate may have an uneven surface after long-term use, thereby affecting the valve plate during use. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects in the prior art and provide a method for manufacturing a valve sheet of an automobile accessory.

[0004] To achieve the above object, the technical solution of the present invention is to design a method for manufacturing a valve sheet of an automobile accessory, comprising at least the following steps: S1: continuously punching the strip to form a circular sheet and waist-shaped holes and through holes on the sheet; S2: CNC equipment is used to chamfer the waist-shaped hole and the outer edge of the via hole on one side of the sheet formed in step S1; S3: Double-sided grinding is performed on the two sides of the sheet body so that the parallelism of the two sides meets the requirements of the reference surface of the subsequent process, and the roughness meets the accuracy requirements of the subsequent grinding; S4: Using one side of the sheet as a positioning reference surface and grinding the other side; S5: Anodizing the sheet, electrolyzing in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet; S6: The anodized sheet is subjected to secondary grinding on the surface processed in step S4 to form a product.

[0005] According to a further preferred technical solution, before steps S3, S4, and S5 and after step S6, the sheet is cleaned to remove stains and debris generated during the sheet processing.

[0006] According to a further preferred technical solution, after the sheet body is chamfered in step S3, the sheet body is deburred by a centrifugal grinder and then cleaned.

[0007] According to a further preferred technical solution, after step S6, the product is subjected to full-size inspection, then film is applied, and the finished product is packaged.

[0008] Further preferred technical solution, in step S1, a circular sheet and waist-shaped holes and vias on the sheet are punched out on the aluminum strip, and the diameter of the circular sheet is ensured to be 31.75 mm, the thickness is 3.2-3.3 mm, and the flatness is 0.1 mm. According to a further preferred technical solution, in step S3, the sheet is double-sided ground so that the parallelism of the two side surfaces reaches 0.03 mm and the roughness reaches Ra0.8.

[0009] A further preferred technical solution is to use ultrasonic cleaning. The ultrasonic cleaning equipment has nine cleaning tanks. The cleaning liquid in the first four cleaning tanks contains chemical detergent. The chemical detergent is preferably HP-231 with a concentration of 2.5±0.5%. The cleaning time of each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C. The cleaning liquid in the last five cleaning tanks is pure water. The cleaning time of each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C. After the sheet is ultrasonically cleaned in the nine cleaning tanks in turn, oil stains and dirt can be effectively removed, and then it is dried twice with a drying time of 3 minutes and a drying temperature of 60±5°C.

[0010] According to a further preferred technical solution, in step S4, one side surface of the sheet is used as a positioning reference surface and the other side surface is ground so that the parallelism of the two side surfaces reaches 0.03 mm, the roughness reaches Ra0.1, and the thickness is 2.80-2.75 mm.

[0011] According to a further preferred technical solution, in step S5, the sheet is anodized and electrolyzed in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet, with a film thickness of 0.06-0.07 mm, a thickness of 2.78-2.85 mm, and a surface hardness of >HRB370.

[0012] According to a further preferred technical solution, in step S6, the anodized sheet is subjected to secondary grinding on the surface processed in step S4 to form a product with a parallelism of 0.03mm and a roughness of Ra0.1. The thickness is 2.768-2.844mm, with a minimum film thickness of 0.043mm. A light band detector is used for flatness detection, and the standard is within 1.5 light bands.

[0013] The advantages and beneficial effects of the present invention are: the two sides of the sheet body are double-sided ground so that the parallelism of the two sides meets the requirements of the reference surface of the subsequent process, and the roughness meets the accuracy requirements of the subsequent grinding, so that the parallelism requirements of the two sides of the valve sheet meet 0.05mm, and the roughness requirements meet Ra0.1, so as to ensure that the valve sheet meets the working requirements; Anodic oxidation is used to adhere a layer of metal film to the surface, thereby preventing metal oxidation, improving wear resistance, conductivity, reflectivity and corrosion resistance, and enhancing aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a manufacturing flow chart. DETAILED DESCRIPTION

[0015] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0016] A valve plate for automobile parts, the valve plate is a circular plate body, a pair of symmetrically arranged waist-shaped holes are provided on the plate body, the waist-shaped holes penetrate the plate body, a through hole is further provided at the core position of the plate body, the valve plate is installed on the valve body, and rotates relative to the valve body, so that the waist-shaped holes on the valve plate and the channel of the valve body are overlapped up and down to form an open state, and are staggered up and down to form a closed state, so that the valve body is opened or closed by the valve plate, therefore, the parallelism of the two sides of the valve plate is required to be 0.05mm, and the roughness is required to be Ra0.1, so as to ensure that the valve plate meets the working requirements, in order to meet the requirements of form and position tolerance, such as Figure 1 As shown, the present application provides a method for manufacturing a valve sheet of an automobile accessory, comprising at least the following steps: S1: continuously punching the strip to form a circular sheet and waist-shaped holes and through holes on the sheet; S2: CNC equipment is used to chamfer the waist-shaped hole and the outer edge of the via hole on one side of the sheet formed in step S1; S3: Double-sided grinding is performed on the two sides of the sheet body so that the parallelism of the two sides meets the requirements of the reference surface of the subsequent process, and the roughness meets the accuracy requirements of the subsequent grinding; S4: Using one side of the sheet as a positioning reference surface and grinding the other side; S5: Anodizing the sheet, electrolyzing in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet; S6: The anodized sheet is subjected to secondary grinding on the surface processed in step S4 to form a product.

[0017] Furthermore, before steps S3, S4, and S5 and after step S6, the sheet is cleaned to remove stains and debris generated during sheet processing. Specifically, the method includes at least the following steps: S1: preparing a strip; continuously punching the strip to form a circular sheet and waist-shaped holes and vias on the sheet; S2: CNC equipment is used to chamfer the waist-shaped hole and the outer edge of the via hole on one side of the sheet formed in step S1; Cleaning the sheet formed in step S2 to remove stains and debris generated during sheet processing; S3: Double-sided grinding is performed on the two sides of the cleaned sheet body, so that the parallelism of the two sides meets the requirements of the reference surface of the subsequent process, and the roughness meets the accuracy requirements of the subsequent grinding; Cleaning the sheet formed in step S3 to remove stains and debris generated during sheet processing; S4: grinding the cleaned sheet body with one side surface as a positioning reference surface and the other side surface as a grinding surface; Cleaning the sheet formed in step S4 to remove stains and debris generated during sheet processing; S5: Anodic oxidation, electrolysis in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet; S6: performing secondary grinding on the surface processed in step S4 of the anodized sheet to form a product; The sheet formed in step S6 is cleaned to remove stains and debris generated during the sheet processing to form a product.

[0018] Furthermore, after the sheet body is chamfered in step S3, the sheet body is deburred by a centrifugal grinder and then cleaned.

[0019] Furthermore, after step S6, the product is subjected to full-size inspection, and then film is applied and the finished product is packaged.

[0020] In a specific embodiment, the strip is an aluminum strip, the model is AL6061 T6, and the specification is 45*3.2mm coil.

[0021] A 160T punching machine and a progressive die are used to punch a circular sheet body and waist-shaped holes and through holes on the sheet body on the aluminum strip, and the diameter of the circular sheet body is ensured to be 31.75 mm, the thickness is 3.2-3.3 mm, and the flatness is 0.1 mm.

[0022] The TC5003-axis CNC equipment is used to form chamfers on the outer edges of the waist-shaped holes and through holes on one side of the sheet.

[0023] After the sheet body is chamfered, the sheet body is deburred by a centrifugal grinder, the grinding material is high-frequency porcelain, the roller speed is 160r / min, and the rolling time is 10min.

[0024] The sheet is cleaned to remove stains and debris generated during the sheet processing; preferably, ultrasonic cleaning is used, and the ultrasonic cleaning equipment has nine cleaning tanks. The cleaning liquid in the first four cleaning tanks contains chemical detergent, and the chemical detergent is preferably HP-231 with a concentration of 2.5±0.5%. The cleaning time of each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C. The cleaning liquid in the last five cleaning tanks is pure water, and the cleaning time of each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C. After the sheet is ultrasonically cleaned in the nine cleaning tanks in turn, oil stains and dirt can be effectively removed, and then it is dried twice, with a drying time of 3 minutes and a drying temperature of 60±5°C.

[0025] The two sides of the cleaned sheet are double-sided ground to achieve a parallelism of 0.03 mm, a roughness of Ra0.8, and a thickness of 2.83 ± 0.02 mm, meeting the accuracy requirements of subsequent grinding. In one embodiment, a double-sided grinding device comprises a frame, a linear drive mechanism is provided on the frame, a pair of grinding wheels is provided on the linear drive mechanism, and the pair of grinding wheels moves in the same direction or in opposite directions under the drive of the linear drive mechanism; the main shaft of each grinding wheel is connected to the motor shaft of a servo motor, and rotates under the drive of the servo motor; a support frame is also provided on one side of the frame, a turntable is provided on the support frame and passes through the pair of grinding wheels, the turntable and the pair of grinding wheels at least partially overlap, a placement groove is provided on the turntable for placing a sheet, and a support plate is also provided on the support frame below the turntable; In another embodiment, a double-sided grinding device includes a box body, an upper grinding mechanism is fixedly installed on the top of the box body, and a lower grinding mechanism is fixedly installed on the bottom of the box body. The upper grinding mechanism and the lower grinding mechanism have the same structure, wherein a frame is fixedly installed on the left inner wall of the box body; a clamping mechanism is fixedly installed on the frame, which is used to receive, clamp and transfer the sheet body; a storage mechanism is fixedly installed in the box body near the front side, which is used to separate qualified and unqualified sheets after grinding; a guide mechanism is fixedly installed on the left inner wall of the box body, and the guide mechanism is installed as a whole just above the storage mechanism for feeding the sheet body; a blowing mechanism is fixedly installed on the right inner wall of the box body, which is used to blow away the waste generated by grinding the sheet body; wherein the clamping mechanism includes a planetary gear disk, a driving motor is installed in the middle of the planetary gear disk, and the planetary gear disk is evenly distributed with gear rings along the circumference, and the number is five, and they are distributed on the planetary gear disk in an equilateral pentagonal shape, one of which is clamped and installed with a detection member in the planetary gear disk, and the driving motor is driven by meshing with the gear ring through the planetary gear disk.

[0026] The above device can ensure double-sided grinding, so that the parallelism of the two side surfaces meets the requirements of the reference surface of the subsequent process, and the roughness meets the accuracy requirements of subsequent grinding.

[0027] The sheet is cleaned for a second time to remove stains and debris generated during the sheet processing; preferably, ultrasonic cleaning is used, and the ultrasonic cleaning equipment has nine cleaning tanks. The cleaning liquid in the first four cleaning tanks contains chemical detergent, and the chemical detergent is preferably HP-231 with a concentration of 2.5±0.5%. The cleaning time of each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C. The cleaning liquid in the last five cleaning tanks is pure water, and the cleaning time of each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C. After the sheet is ultrasonically cleaned in the nine cleaning tanks in turn, oil stains and dirt can be effectively removed, and then it is dried for a second time, with a drying time of 3 minutes and a drying temperature of 60±5°C.

[0028] The cleaned sheet is ground with one side as the positioning reference surface and the other side as the grinding surface, so that the parallelism of the two sides reaches 0.03mm, the roughness reaches Ra0.1, and the thickness is 2.80-2.75mm.

[0029] The sheet is cleaned for the third time to remove stains and debris generated during the sheet processing; preferably, ultrasonic cleaning is used, and the ultrasonic cleaning equipment has nine cleaning tanks. The cleaning liquid in the first four cleaning tanks contains chemical detergent, and the chemical detergent is preferably HP-231 with a concentration of 2.5±0.5%. The cleaning time of each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C. The cleaning liquid in the last five cleaning tanks is pure water, and the cleaning time of each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C. After the sheet is ultrasonically cleaned in the nine cleaning tanks in turn, oil stains and dirt can be effectively removed, and then it is dried twice, with a drying time of 3 minutes and a drying temperature of 60±5°C.

[0030] The sheet is anodized and electrolyzed in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet, with a film thickness of 0.06-0.07mm, a thickness of 2.78-2.85mm, and a surface hardness of >HRB370.

[0031] Anodizing is an electrochemical oxidation of metals or alloys. The metal or alloy parts are used as anodes, and an oxide film is formed on their surface by electrolysis. The metal oxide film changes the surface state and properties, such as surface coloring, improving corrosion resistance, wear resistance and hardness, protecting the metal surface, etc. For example, in aluminum anodizing, aluminum and its alloys are placed in corresponding electrolytes (such as sulfuric acid, chromic acid, oxalic acid, etc.) as anodes, and electrolysis is carried out under specific conditions and external current. The aluminum or its alloy of the anode is oxidized, and a thin layer of aluminum oxide is formed on the surface, with a thickness of 5 to 20 microns, and the hard anodized film can reach 60 to 200 microns. The aluminum or its alloy after anodizing has improved its hardness and wear resistance, which can reach 250 to 500 kg / mm2, good heat resistance, hard anodized film melting point up to 2320K, excellent insulation, breakdown voltage up to 2000V, enhanced corrosion resistance, and no corrosion in ω=0.03NaCl salt spray for thousands of hours. The thin oxide film has a large number of micropores, which can absorb various lubricants and is suitable for manufacturing engine cylinders or other wear-resistant parts.

[0032] The anodized sheet is subjected to secondary grinding of the S4 step processed surface to form a product with a parallelism of 0.03mm and a roughness of Ra0.1. The thickness is 2.768-2.844mm, and the minimum film thickness is 0.043mm. The flatness is detected by a light band detector, and the standard is within 1.5 light bands.

[0033] The products are inspected at full size, then filmed and packaged as finished products.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for manufacturing a valve sheet for an automobile part, characterized in that: Includes at least the following steps: S1: continuously punching the strip to form a circular sheet and waist-shaped holes and through holes on the sheet; S2: CNC equipment is used to chamfer the waist-shaped hole and the outer edge of the via hole on one side of the sheet formed in step S1; S3: Double-sided grinding is performed on the two sides of the sheet body so that the parallelism of the two sides meets the requirements of the reference surface of the subsequent process, and the roughness meets the accuracy requirements of the subsequent grinding; S4: Using one side of the sheet as a positioning reference surface and grinding the other side; S5: Anodizing the sheet, electrolyzing in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet; S6: The anodized sheet is subjected to secondary grinding on the surface processed in step S4 to form a product.

2. The method for manufacturing a valve sheet for an automobile accessory according to claim 1, characterized in that: Before steps S3, S4, and S5 and after step S6, the sheet is cleaned to remove stains and debris generated during sheet processing.

3. The method for manufacturing a valve sheet for an automobile accessory according to claim 2, characterized in that: After the sheet body is chamfered in step S3, the sheet body is deburred by a centrifugal grinder and then cleaned.

4. The method for manufacturing a valve sheet for an automobile accessory according to claim 1, characterized in that: After the S6 step, the product is inspected in full size, then film is applied and the finished product is packaged.

5. The method for manufacturing a valve sheet for an automobile accessory according to claim 1, characterized in that: In step S1, a circular sheet and waist-shaped holes and via holes on the sheet are punched out on the aluminum strip, and the diameter of the circular sheet is ensured to be 31.75 mm, the thickness is 3.2-3.3 mm, and the flatness is 0.1 mm.

6. The method for manufacturing a valve sheet for an automobile accessory according to claim 1, characterized in that: In step S3, the sheet is double-sided ground so that the parallelism of the two side surfaces reaches 0.03 mm and the roughness reaches Ra0.

8.

7. The method for manufacturing a valve sheet for an automobile accessory according to claim 2, characterized in that: Ultrasonic cleaning is adopted, and the ultrasonic cleaning equipment has nine cleaning tanks. The cleaning liquid in the first four cleaning tanks contains chemical detergent, and the chemical detergent is preferably HP-231 with a concentration of 2.5±0.5%. The cleaning time of each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C. The cleaning liquid in the last five cleaning tanks is pure water, and the cleaning time of each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C. After the sheet body is ultrasonically cleaned in the nine cleaning tanks in turn, oil stains and dirt can be effectively removed, and then it is dried for the second time, with a drying time of 3 minutes and a drying temperature of 60±5°C.

8. The method for manufacturing a valve sheet for an automobile accessory according to claim 6, characterized in that: In step S4, one side surface of the sheet is used as a positioning reference surface and the other side surface is ground so that the parallelism of the two side surfaces reaches 0.03 mm, the roughness reaches Ra0.1, and the thickness is 2.80-2.75 mm.

9. The method for manufacturing a valve sheet for an automobile accessory according to claim 7, characterized in that: In step S5, the sheet is anodized and electrolyzed in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet, with a film thickness of 0.06-0.07 mm, a thickness of 2.78-2.85 mm, and a surface hardness of >HRB370.

10. The method for manufacturing a valve sheet for an automobile accessory according to claim 8, characterized in that: In step S6, the anodized sheet is re-ground on the surface processed in step S4 to form a product with a parallelism of 0.03mm and a roughness of Ra0.

1. The thickness is 2.768-2.844mm, with a minimum film thickness of 0.043mm. A light band detector is used for flatness detection, and the standard is within 1.5 light bands.

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