CN115430998B - Production process of double-scroll spring - Google Patents
Production process of double-scroll spring Download PDFInfo
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- CN115430998B CN115430998B CN202211146913.5A CN202211146913A CN115430998B CN 115430998 B CN115430998 B CN 115430998B CN 202211146913 A CN202211146913 A CN 202211146913A CN 115430998 B CN115430998 B CN 115430998B
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- spring
- volute
- tempering
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- strip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention provides a production process of a double-scroll spring, which is characterized by comprising the following steps of: the first step is as follows: sorting the raw materials into spring strips of strip-shaped profiles according to specified sizes by using a punch press; the second step is that: adopting a folding machine to wind the strip-shaped section from the middle to the two ends of the spring steel in the first step in the same direction to form two reverse volute springs, wherein the number of the volute coils of the two volute springs is equal, an elastic gap is formed between each volute coil, and finally, bending the end head of the outermost ring of each volute spring; the third step: carrying out atmosphere protection quenching treatment; the fourth step: carrying out medium-low temperature tempering treatment, and cooling after tempering; the fifth step: performing shot blasting process; and a sixth step: surface oiling treatment; in the manufacturing process, the spring raw material is subjected to quenching and tempering treatment after blanking and forming, and finally shot blasting treatment is performed, so that the strength and the weather resistance of the double-scroll spring are greatly improved.
Description
Technical Field
The invention relates to the technical field of spring production, in particular to a production process of a double-scroll spring.
Background
In a limited space, the automobile gear shifting clutch needs to be provided with a bidirectional scroll torsion spring which is arranged on a transmission worm of a micro motor, so that the bidirectional scroll torsion spring can generate larger torque and can play a role in kinetic energy transmission and buffer protection; however, the existing spring production equipment and process can only produce common scroll springs, and cannot meet the production of the bidirectional scroll torsion spring, so that a double-scroll spring production process is needed.
Disclosure of Invention
The present invention provides a bidirectional spiral torsion spring to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: the method is characterized by comprising the following steps:
the first step is as follows: blanking, namely cutting the raw material into spring strips of strip-shaped profiles according to specified sizes by using a punch;
the second step is that: forming, namely winding the strip-shaped section from the middle to the two ends of the spring steel in the first step in the same direction by using a folding machine to form two reverse volute springs, wherein the number of the volute coils of the two volute springs is equal, an elastic gap is formed between each volute coil, and finally, bending the end head of the outermost ring of each volute spring;
the third step: quenching, namely performing atmosphere protection quenching treatment on the formed part obtained in the second step;
the fourth step: tempering, namely performing medium-low temperature tempering treatment on the formed part in the third step, and cooling after tempering;
the fifth step: and (4) performing shot blasting, namely performing shot blasting process on the formed part in the fourth step.
And a sixth step: and (5) surface treatment, namely performing an oil coating process on the formed part in the fifth step.
Preferably, the spring steel is made into a strip-shaped section with the length of 325 +/-0.8 mm and the thickness of 2 +/-0.2 mm by a punch press, and the strip-shaped section is wide in the middle and narrow on two sides.
Preferably, the quenching temperature is 855 +/-25 ℃.
Preferably, the tempering temperature is 425 +/-25 ℃, the tempering time is 50 +/-10 minutes, and the cooling mode adopts water cooling or natural cooling in air.
Preferably, the shot blasting process adopts steel shots with the diameter of 0.6mm and the hardness of 610-670 HV for 8-10 minutes.
The invention has the beneficial effects that: the two symmetrical bending machines are utilized to simultaneously wind the belt-shaped section from the middle to the two ends in the same direction for one time to form two reverse volute spiral springs, the number of the volute spiral coils of the two volute spiral springs is equal, an elastic gap is formed between each volute spiral coil, and the production efficiency of products is improved through one-time winding forming;
in the manufacturing process of the double-volute spiral spring, the spring material is subjected to blanking and forming, then quenching and tempering treatment are carried out on the spring material, and finally shot blasting treatment is carried out, so that the strength and the weather resistance of the double-volute spiral spring are greatly improved.
Drawings
FIG. 1 is a flow chart of the production process of the present invention.
Detailed Description
The following will explain in detail a process for producing a double-volute coil spring according to the present invention with reference to the accompanying drawings.
Referring to fig. 1, the process for producing a double-volute coil spring in the embodiment is characterized by comprising the following steps:
the first step is as follows: blanking, namely cutting the raw material into spring strips of strip-shaped profiles according to specified sizes by using a punch; the spring steel is made into a belt-shaped section with the length of 325 +/-0.8 mm and the thickness of 2 +/-0.2 mm by adopting a punch press, and the belt-shaped section is wide in the middle and narrow on two sides.
The second step is that: and forming, namely, simultaneously winding the strip-shaped section from the middle to two ends in the same direction by using a folding machine to form two reverse volute spiral springs by using the spring steel in the first step, wherein the number of the volute spiral springs is equal, an elastic gap is formed between every two volute spiral springs, and finally, the end head of the outermost ring of each volute spiral spring is bent.
The third step: quenching, namely performing atmosphere protection quenching treatment on the formed part obtained in the second step; the quenching temperature is 855 ℃.
The fourth step: tempering, namely tempering the formed part in the third step, and cooling after tempering; the tempering temperature is 425 ℃, the tempering time is 50 minutes, and the cooling mode adopts water cooling or natural cooling in the air.
The fifth step: and (3) performing shot blasting, namely performing shot blasting process on the formed part in the fourth step, wherein the specification of shot blasting steel shots is phi 0.6mm, the hardness is 610-670 HV, and the shot blasting steel shots are uniformly sprayed to the formed part through spraying equipment for 8 minutes.
And a sixth step: and (5) surface treatment, namely, oiling the formed part in the fifth step.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (5)
1. The production process of the double-scroll spring is characterized by comprising the following steps of:
the first step is as follows: blanking, namely cutting the raw material into spring strips of strip-shaped profiles according to specified sizes by using a punch;
the second step: forming, namely winding the strip-shaped section from the middle to the two ends of the spring steel in the first step in the same direction by using a folding machine to form two reverse volute springs, wherein the number of the volute coils of the two volute springs is equal, an elastic gap is formed between each volute coil, and finally, bending the end head of the outermost ring of each volute spring;
the third step: quenching, namely performing atmosphere protection quenching treatment on the formed part obtained in the second step;
the fourth step: tempering, namely performing medium-low temperature tempering treatment on the formed part in the third step, and cooling after tempering;
the fifth step: performing shot blasting, namely performing shot blasting on the formed part in the fourth step;
and a sixth step: and (5) surface treatment, namely, oiling the formed part in the fifth step.
2. The process for producing a twin scroll spring according to claim 1, further characterized by: the spring steel band is made into a strip-shaped section with the length of 325 +/-0.8 mm and the thickness of 2 +/-0.2 mm by a punch, wherein the strip-shaped section is wide in the middle and narrow at two sides.
3. The process for producing a twin scroll spring according to claim 1, further characterized by: the quenching temperature is 855 plus or minus 25 ℃.
4. The process for producing a twin scroll spring according to claim 1, further characterized by: the tempering temperature is 425 +/-25 ℃, the tempering time is 50 +/-10 minutes, and the cooling mode adopts water cooling or natural cooling in air.
5. The process for producing a twin scroll spring according to claim 1, further characterized by: the shot blasting process adopts steel shots with phi of 0.6mm and hardness of 610-670 HV for 8-10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211146913.5A CN115430998B (en) | 2022-09-21 | 2022-09-21 | Production process of double-scroll spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211146913.5A CN115430998B (en) | 2022-09-21 | 2022-09-21 | Production process of double-scroll spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115430998A CN115430998A (en) | 2022-12-06 |
| CN115430998B true CN115430998B (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211146913.5A Active CN115430998B (en) | 2022-09-21 | 2022-09-21 | Production process of double-scroll spring |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3329177A (en) * | 1965-01-12 | 1967-07-04 | Ametek Inc | Method and apparatus for making two-coil non-cumulative force spiral springs, and more particularly two-coil non-cumulative force spiral springs having a saddle between the coils |
| JPH09206866A (en) * | 1996-01-31 | 1997-08-12 | Asahi Seiki Kogyo Kk | Method for forming spiral spring |
| CN102699624A (en) * | 2011-09-21 | 2012-10-03 | 杭州富春弹簧有限公司 | Spring manufacturing process |
| CN205978211U (en) * | 2016-08-18 | 2017-02-22 | 江阴市云晟带箔有限公司 | Spiral spring |
| CN110064896A (en) * | 2019-06-18 | 2019-07-30 | 青海金泽恩新材料科技有限公司 | A kind of preparation method of plane scroll spring |
| CN114083246A (en) * | 2021-12-23 | 2022-02-25 | 重庆三四零三汽车零部件有限公司 | Manufacturing process of high-stress plate spring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105579726B (en) * | 2013-10-01 | 2019-03-01 | 舍弗勒技术股份两合公司 | Component with rubbing device |
-
2022
- 2022-09-21 CN CN202211146913.5A patent/CN115430998B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3329177A (en) * | 1965-01-12 | 1967-07-04 | Ametek Inc | Method and apparatus for making two-coil non-cumulative force spiral springs, and more particularly two-coil non-cumulative force spiral springs having a saddle between the coils |
| JPH09206866A (en) * | 1996-01-31 | 1997-08-12 | Asahi Seiki Kogyo Kk | Method for forming spiral spring |
| CN102699624A (en) * | 2011-09-21 | 2012-10-03 | 杭州富春弹簧有限公司 | Spring manufacturing process |
| CN205978211U (en) * | 2016-08-18 | 2017-02-22 | 江阴市云晟带箔有限公司 | Spiral spring |
| CN110064896A (en) * | 2019-06-18 | 2019-07-30 | 青海金泽恩新材料科技有限公司 | A kind of preparation method of plane scroll spring |
| CN114083246A (en) * | 2021-12-23 | 2022-02-25 | 重庆三四零三汽车零部件有限公司 | Manufacturing process of high-stress plate spring |
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| CN115430998A (en) | 2022-12-06 |
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