A method of manufacturing an automotive component valve plate

Abstract

The application relates to a manufacturing method of an automobile accessory valve plate, which comprises at least the following steps: S1, continuously stamping a strip to form a circular plate body and a waist-shaped hole and a through hole on the plate body; S2, forming a chamfer at the outer side of the waist-shaped hole and the through hole on one side of the plate body formed in the step S1 through a CNC device; S3, double-sided grinding two side faces of the plate body, so that parallelism of the two side faces reaches the requirement of a reference surface in a subsequent process, and roughness meets the accuracy requirement of subsequent grinding; S4, taking one side face of the plate body as a positioning reference surface and grinding the other side face; S5, anodizing the plate body, electrolyzing in a suitable electrolyte, so that an inorganic oxide film is formed on the surface of the plate body; and S6, secondarily grinding the processed surface in the step S4 after the plate body is anodized, so that a product is formed.

Description

Technical Field

[0001] This invention relates to the field of automotive valve plate manufacturing technology, and in particular to a method for manufacturing automotive valve plates. Background Technology

[0002] A valve plate for automotive parts is disclosed. The valve plate is a circular plate with a pair of symmetrically arranged oblong holes that penetrate the plate. A through hole is also provided at the core of the plate. The valve plate is mounted on a valve body and rotates relative to the valve body. When the oblong holes on the valve plate overlap with the channel of the valve body, they form an open state; when they are staggered, they form a closed state. This allows the valve plate to open or close the valve body. Therefore, the parallelism of the two sides of the valve plate is required to be 0.05 mm, and the surface roughness is required to be Ra0.1 to ensure that the valve plate meets the working requirements. In the existing production process of automotive valve plates, most of them are directly precision-machined by cutting and punching with a cutting machine, and then ground on one side with the outer edge as the reference after clamping. This affects the performance of the automotive valve plate. At the same time, no hard anodizing treatment is performed at the end of production. After long-term use, the surface of the automotive valve plate may become uneven, which will affect the use of the valve plate. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects in the prior art and provide a method for manufacturing valve plates for automotive parts.

[0004] To achieve the above objectives, the technical solution of the present invention is to design a method for manufacturing a valve plate for automotive parts, comprising at least the following steps:

[0005] S1: The strip is continuously stamped to form a circular sheet and waist-shaped holes and through holes on the sheet;

[0006] S2: Using a CNC machine, chamfer the outer edge of the waist-shaped hole and the through hole on one side of the sheet formed in step S1;

[0007] S3: Perform double-sided grinding on both sides of the sheet to ensure that the parallelism of the two sides meets the requirements of the reference surface in the subsequent process, while the roughness meets the accuracy requirements of the subsequent grinding.

[0008] S4: Use one side of the sheet as the positioning reference surface and grind the other side;

[0009] S5: The sheet is anodized and electrolyzed in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet.

[0010] S6: The anodized sheet is then ground a second time on the surface processed in step S4 to form the product.

[0011] Further preferred technical solutions, the sheet body is cleaned before the S3, S4, S5 steps and after the S6 step to remove stains and debris generated during the processing of the sheet body.

[0012] Further preferred technical solutions, after the chamfering of the sheet body in the S3 step, deburring treatment is performed on the sheet body by a centrifugal grinder, and then cleaning is performed.

[0013] Further preferred technical solutions, after the S6 step, full-size detection is performed on the product, then the product is laminated, and the finished product is packaged.

[0014] Further preferred technical solutions, in the S1 step, a circular sheet body and a waist-shaped hole and a via hole on the sheet body are punched on an aluminum strip, and the diameter of the circular sheet body is 31.75 mm, the thickness is 3.2-3.3 mm, and the flatness is 0.1 mm.

[0015] Further preferred technical solutions, in the S3 step, the parallelism of the two sides is 0.03 mm by double-sided grinding of the sheet body, and the roughness is Ra0.8.

[0016] Further preferred technical solutions, ultrasonic cleaning is adopted, the ultrasonic cleaning equipment has nine cleaning tanks, the cleaning liquid in the first four cleaning tanks contains a chemical detergent, the chemical detergent is preferably HP-231, the concentration is 2.5±0.5%, the cleaning time of each tank is 3 minutes, the temperature of the cleaning liquid is 60±5℃, 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℃. After the sheet body sequentially passes through the nine cleaning tanks for ultrasonic cleaning, oil stains and dirt can be effectively removed, and then the sheet body is dried again for 3 minutes at a drying temperature of 60±5℃.

[0017] Further preferred technical solutions, in the S4 step, one side of the sheet body is used as a positioning reference surface and the other side is ground, so that the parallelism of the two sides is 0.03 mm, the roughness is Ra0.1, and the thickness is 2.80-2.75 mm.

[0018] Further preferred technical solutions, in the S5 step, the sheet body is anodized, electrolysis is performed in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet body, the film thickness is 0.06-0.07 mm, the thickness is 2.78-2.85 mm, and the surface hardness is >HRB370.

[0019] A further preferred technical solution involves a secondary grinding process in step S6 on the surface processed in step S4 to form a product with a parallelism of 0.03 mm, a roughness of Ra0.1, a thickness of 2.768-2.844 mm, a minimum film thickness of 0.043 mm, and a flatness tester with a standard of within 1.5 light bands.

[0020] The advantages and beneficial effects of the present invention are as follows: the two sides of the plate are ground on both sides to make the parallelism of the two sides meet the requirements of the reference surface of the subsequent process, while the roughness meets the accuracy requirements of the subsequent grinding, so that the parallelism of the two sides of the valve plate meets 0.05mm and the roughness meets Ra0.1, thus ensuring that the valve plate meets the working requirements.

[0021] Anodizing is used to attach a metal film to the surface, which can prevent metal oxidation, improve wear resistance, conductivity, reflectivity and corrosion resistance, and enhance aesthetics. Attached Figure Description

[0022] Figure 1 This is a flowchart illustrating the manufacturing process of the present invention. Detailed Implementation

[0023] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0024] A valve plate for automotive parts, the valve plate being a circular plate with a pair of symmetrically arranged oblong holes penetrating the plate. A through hole is also formed at the core of the plate. The valve plate is mounted on a valve body and rotates relative to the valve body. When the oblong holes on the valve plate overlap with the passageway of the valve body, it forms an open state; when they are staggered, it forms a closed state. This allows the valve plate to open or close the valve body. Therefore, the parallelism of the two sides of the valve plate is required to be 0.05 mm, and the surface roughness is required to be Ra0.1 to ensure that the valve plate meets operational requirements. To meet the requirements of geometric tolerances, such as… Figure 1 As shown, this application provides a method for manufacturing a valve plate for automotive parts, comprising at least the following steps:

[0025] S1: The strip is continuously stamped to form a circular sheet and waist-shaped holes and through holes on the sheet;

[0026] S2: Using a CNC machine, chamfer the outer edge of the waist-shaped hole and the through hole on one side of the sheet formed in step S1;

[0027] S3: double-side grinding is performed on the two side surfaces of the wafer, so that parallelism of the two side surfaces reaches the requirement of the reference surface of the subsequent process, and the roughness meets the accuracy requirement of the subsequent grinding;

[0028] S4: one side surface of the wafer is taken as a positioning reference surface, and the other side surface is ground;

[0029] S5: anodic oxidation is performed on the wafer, electrolysis is performed in a suitable electrolyte, and an inorganic oxide film is formed on the surface of the wafer;

[0030] S6: the wafer after anodic oxidation is subjected to secondary grinding on the processed surface of the S4 step, and a product is formed.

[0031] Further, before the S3, S4 and S5 steps and after the S6 step, the wafer is cleaned to remove stains and debris generated in the wafer processing process. Specifically, at least the following steps are included:

[0032] S1: a strip is prepared; the strip is continuously punched to form a circular wafer and a waist-shaped hole and a via hole on the wafer;

[0033] S2: a CNC device is used to form a chamfer at the outer side of the waist-shaped hole and the via hole on one side surface of the wafer formed in the S1 step;

[0034] The wafer formed in the S2 step is cleaned to remove stains and debris generated in the wafer processing process;

[0035] S3: the two side surfaces of the cleaned wafer are double-side ground, so that parallelism of the two side surfaces reaches the requirement of the reference surface of the subsequent process, and the roughness meets the accuracy requirement of the subsequent grinding;

[0036] The wafer formed in the S3 step is cleaned to remove stains and debris generated in the wafer processing process;

[0037] S4: one side surface of the cleaned wafer is taken as a positioning reference surface, and the other side surface is ground;

[0038] The wafer formed in the S4 step is cleaned to remove stains and debris generated in the wafer processing process;

[0039] S5: anodic oxidation is performed, electrolysis is performed in a suitable electrolyte, and an inorganic oxide film is formed on the surface of the wafer;

[0040] S6: the wafer after anodic oxidation is subjected to secondary grinding on the processed surface of the S4 step, and a product is formed;

[0041] The wafer formed in the S6 step is cleaned to remove stains and debris generated in the wafer processing process, and a product is formed.

[0042] Further, after the chamfering of the piece in S3 step, deburring treatment is performed on the piece by a centrifugal grinder, and then cleaning is performed.

[0043] Further, after the step S6, full-size detection is performed on the product, then film pasting is performed, and finished product packaging is performed.

[0044] In a specific embodiment, the strip is an aluminum strip, model AL6061 T6, and the specification is 45*3.2mm coil.

[0045] A 160T punch and a continuous die are used to punch a circular piece and a waist-shaped hole and a via hole on the aluminum strip, and ensure that the diameter of the circular piece is 31.75mm, the thickness is 3.2-3.3mm, and the flatness is 0.1mm.

[0046] A TC5003 shaft CNC device is used to form a chamfer at the outer side of the waist-shaped hole and the via hole on one side of the piece.

[0047] After the chamfering of the piece, deburring treatment is performed on the piece by a centrifugal grinder, the grinding material is high-frequency porcelain, and the roller speed is 160r / min; the roll grinding time is 10min.

[0048] The piece is cleaned to remove stains and debris generated during the processing of the piece; preferably, ultrasonic cleaning is used, the ultrasonic cleaning device has nine cleaning tanks, the cleaning liquid in the first four cleaning tanks contains a chemical detergent, the chemical detergent is preferably HP-231, the concentration is 2.5±0.5%, the cleaning time of each tank is 3min, the temperature of the cleaning liquid is 60±5℃, the cleaning liquid in the last five cleaning tanks is pure water, the cleaning time of each tank is 3min, the temperature of the cleaning liquid is 60±5℃, after the piece passes through the nine cleaning tanks for ultrasonic cleaning, oil stains and dirt can be effectively removed, and then the piece is dried twice, the drying time is 3min, and the drying temperature is 60±5℃.

[0049] Both sides of the cleaned piece are double-ground to make the parallelism of both sides reach 0.03mm, the roughness reaches Ra0.8, the thickness is 2.83±0.02mm, and the precision requirement of subsequent grinding is met.

[0050] In one embodiment, the double-sided grinding device comprises a rack, a linear drive mechanism provided on the rack, a pair of grinding wheels provided on the linear drive mechanism, and a support frame provided on one side of the rack. The pair of grinding wheels move 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 with the motor shaft of a servo motor, and rotates under the drive of the servo motor. A turntable is provided on the support frame and passes through the pair of grinding wheels. The turntable at least partially overlaps the pair of grinding wheels. The turntable is provided with a placing groove for placing a wafer. A support disc is further provided on the support frame below the turntable.

[0051] In another embodiment, the double-sided grinding device comprises a box body, an upper grinding mechanism fixedly installed on the top of the box body, and a lower grinding mechanism fixedly installed on the bottom of the box body. The upper grinding mechanism and the lower grinding mechanism have the same structure. A frame is fixedly installed on the left inner wall of the box body. A clamping mechanism is fixedly installed on the frame for receiving, clamping, and transferring a wafer. A storage mechanism is fixedly installed in the box body near the front side for separately storing qualified products and unqualified products after grinding. A guide mechanism is fixedly installed on the left inner wall of the box body and is integrally installed above the storage mechanism for wafer feeding. A blowing mechanism is fixedly installed on the right inner wall of the box body for blowing away waste generated during grinding. The clamping mechanism comprises a planetary gear disc, a driving motor installed in the middle of the planetary gear disc, and a plurality of tooth rings uniformly distributed on the planetary gear disc. One of the tooth rings is clamped with a detection piece. The driving motor is in transmission with the planetary gear disc and the tooth ring.

[0052] The above device can ensure double-sided grinding, so that the parallelism of the two sides meets the requirement of the reference surface in the subsequent process, and the roughness meets the accuracy requirement of the subsequent grinding.

[0053] The wafer is cleaned for the second time to remove stains and debris generated during the processing of the wafer. Preferably, ultrasonic cleaning is adopted. The ultrasonic cleaning equipment has nine cleaning tanks. The cleaning liquid in the first four cleaning tanks contains a 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℃. 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℃. After the wafer sequentially passes through the nine cleaning tanks for ultrasonic cleaning, oil stains and dirt can be effectively removed. Then, the wafer is dried again for 3 minutes at a drying temperature of 60±5℃.

[0054] The cleaned sheet is positioned with one side as the reference surface and the other side is ground to achieve a parallelism of 0.03 mm and a roughness of Ra 0.1, and the thickness is 2.80-2.75 mm.

[0055] The sheet is cleaned for the third time to remove stains and debris generated during the processing of the sheet; preferably, the cleaning is performed by ultrasonic cleaning, and the ultrasonic cleaning device has nine cleaning tanks; the cleaning liquid in the first four tanks contains a chemical detergent, preferably HP-231, at a concentration of 2.5±0.5%, and the cleaning time in each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C; the cleaning liquid in the last five tanks is pure water, and the cleaning time in each tank is 3 minutes, and the temperature of the cleaning liquid is 60±5°C; after the sheet is sequentially cleaned in the nine cleaning tanks by ultrasonic cleaning, the oil stains and dirt can be effectively removed, and then the sheet is dried for the second time, the drying time is 3 minutes, and the drying temperature is 60±5°C.

[0056] The sheet is anodized to form an inorganic oxide film on the surface of the sheet by electrolysis in a suitable electrolyte, and the film thickness is 0.06-0.07 mm, the thickness is 2.78-2.85 mm, and the surface hardness is > HRB370.

[0057] Anodizing is an electrochemical oxidation of a metal or alloy, and the workpiece of the metal or alloy is used as an anode to form an oxide film on the surface by electrolysis. The metal oxide film changes the surface state and properties, such as surface coloring, improves corrosion resistance, enhances wear resistance and hardness, and protects the metal surface. For example, aluminum anodizing, aluminum and its alloys are placed in a corresponding electrolyte (such as sulfuric acid, chromic acid, oxalic acid, etc.) as an anode, and electrolysis is performed under specific conditions and an applied current. The aluminum or its alloy anode is oxidized, and an aluminum oxide film is formed on the surface, with a thickness of 5-20 microns, and a hard anodized film of 60-200 microns. The anodized aluminum or its alloy has improved hardness and wear resistance, up to 250-500 kg / square millimeter, good heat resistance, with a hard anodized film melting point of up to 2320K, excellent insulation, with a breakdown voltage of up to 2000V, and enhanced corrosion resistance, with no corrosion in a ω=0.03 NaCl salt mist for thousands of hours. The thin layer of the 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.

[0058] The anodized sheet is ground for the second time on the S4 step processing surface to form a product, with a parallelism of 0.03 mm, a roughness of Ra 0.1, a thickness of 2.768-2.844 mm, a minimum film thickness of 0.043 mm, and a flatness detected by a light band detector within 1.5 light bands.

[0059] Full-size detection is performed on the product, then film pasting is performed, and finished product packaging is performed.

[0060] The above merely describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the technical principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A method of manufacturing an automotive component valve plate, characterized by, The method comprises at least the following steps: S1: continuously punching the strip to form a circular sheet and a waist-shaped hole and a via hole on the sheet; S2: forming a chamfer at the outer side of the waist-shaped hole and the via hole on one side of the sheet formed in the step S1 by a CNC device; S3: double-sided grinding the two side surfaces of the sheet to make the parallelism of the two side surfaces meet the requirement of the reference surface of the subsequent process, and the roughness meets the accuracy requirement of the subsequent grinding; S4: taking one side surface of the sheet as a positioning reference surface and grinding the other side surface; S5: anodizing the sheet, electrolyzing in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet; S6: secondarily grinding the processed surface of the sheet after anodization in the step S4 to form an automobile accessory valve sheet; the parallelism of the automobile accessory valve sheet reaches 0.03 mm, the roughness reaches Ra0.1, the thickness is 2.768-2.844 mm, the minimum film thickness is 0.043 mm, and the flatness is detected by a light band detector, and the standard is within 1.5 light bands.

2. The method of manufacturing an automotive component valve plate according to claim 1, wherein, Before the steps S3, S4 and S5 and after the step S6, the sheet is cleaned to remove stains and debris generated in the processing of the sheet.

3. The method of manufacturing an automotive component valve plate according to claim 2, wherein, After the chamfering of the sheet in the step S3, deburring treatment is performed on the sheet by a centrifugal grinder, and then the sheet is cleaned.

4. The method of claim 1, wherein After the step S6, the automobile accessory valve sheet is detected in full size, then is pasted with a film, and is packaged as a finished product.

5. The method of claim 1, wherein In the step S1, a circular sheet and a waist-shaped hole and a via hole on the sheet are punched on the aluminum strip, and the diameter of the circular sheet is ensured to be 31.75 mm, the thickness is ensured to be 3.2-3.3 mm, and the flatness is ensured to be 0.1 mm.

6. The method of claim 1, wherein In the step S3, the parallelism of the two side surfaces of the sheet is made to reach 0.03 mm by double-sided grinding the sheet, and the roughness is made to reach Ra0.

8.

7. The method of manufacturing an automotive component valve plate of claim 2, wherein, The cleaning is performed by ultrasonic waves, the ultrasonic cleaning device has nine cleaning tanks, the cleaning liquid in the first four cleaning tanks contains a chemical detergent, the chemical detergent is HP-231, the concentration is 2.5±0.5%, the cleaning time of each tank is 3 minutes, the temperature of the cleaning liquid is 60±5℃, 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℃; after the sheet sequentially passes through the nine cleaning tanks for ultrasonic cleaning, oil stains and dirt can be effectively removed, and then the sheet is secondarily dried for 3 minutes at a temperature of 60±5℃.

8. The method of claim 6, wherein the valve plate is made of a material selected from the group consisting of aluminum, zinc, magnesium, and alloys thereof. In the step S4, one side surface of the sheet is taken 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 of claim 7, wherein the valve plate is made of a material having a thickness of 0.5 to 1.5 mm. In the step S5, the sheet is anodized, electrolyzed in a suitable electrolyte to form an inorganic oxide film on the surface of the sheet, the film thickness is 0.06-0.07 mm, the thickness is 2.78-2.85 mm, and the surface hardness is >HRB370.

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