CN112547902A - Diaphragm spring processing technology - Google Patents
Diaphragm spring processing technology Download PDFInfo
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- CN112547902A CN112547902A CN202110096816.9A CN202110096816A CN112547902A CN 112547902 A CN112547902 A CN 112547902A CN 202110096816 A CN202110096816 A CN 202110096816A CN 112547902 A CN112547902 A CN 112547902A
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- forming
- diaphragm spring
- die
- window
- punching
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
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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
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
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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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Springs (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a processing technology of a diaphragm spring, which comprises blanking and punching a middle hole; punching a window; punching a separation finger slot; extruding a window fillet; cold pressing and forming; quenching; tempering at medium temperature; separating refers to high-frequency quenching; tempering at low temperature; shot blasting; and (5) detecting. The cold press forming process adopts a new cold press forming die which comprises a forming male die, a forming female die and other parts, wherein the forming male die is designed according to the shape of the diaphragm spring, and the forming male die and the forming female die are matched and assembled. According to the processing technology, the cold pressing forming die is used for replacing the press quenching forming in the prior art, so that the diaphragm spring forming die, the forming equipment and the press machine are reduced, the cost is reduced, and the production efficiency of the diaphragm spring is improved; the multiple forming is reduced, the accumulated error can be eliminated, the product size precision is improved, the product qualification rate is improved, and the service life and the performance of the diaphragm spring are greatly improved.
Description
Technical Field
The invention relates to processing of a diaphragm spring, in particular to a processing technology of the diaphragm spring.
Background
The clutch is an important part of an automobile transmission system, the diaphragm spring is an important pressing element in the clutch, a plurality of long radial grooves are uniformly distributed on the circumferential surface of an inner hole of the diaphragm spring, a large long round or rectangular window hole is formed at the root of each groove and can penetrate through a supporting rivet, and the part is called as a separation finger; the portion from the bottom of the window to the outer circumference of the spring is shaped like a bottomless broadside dish, whose cross-section is truncated cone, called the dish spring portion.
At present, a processing process flow adopted by a diaphragm spring is blanking, punching a middle hole → punching a window → punching a separating finger groove → extruding a window round corner → press quenching forming → medium temperature tempering → separating finger high frequency quenching forming → low temperature tempering → shot blasting → detection process completion, the process flow is more and single, the production efficiency is low, the product precision is not high, the finger end jumping is poor, the product percent of pass is low, the fatigue life is shortened, and the performance of a clutch assembly is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a diaphragm spring processing technology, and the processing technology can reduce the working procedures, improve the production efficiency of the diaphragm spring, reduce the cost, eliminate the accumulated error, improve the dimensional precision and the qualification rate of products and prolong the service life of the diaphragm spring.
The technical scheme for realizing the purpose of the invention is as follows:
a diaphragm spring processing technology comprises the following steps:
step one, blanking raw materials of the diaphragm spring and punching a middle hole, namely simultaneously blanking the outer circle shape of the diaphragm spring and punching the middle hole shape on a punch;
secondly, punching a window, namely placing the diaphragm spring prepared in the first step on a window punching machine to punch the shape of the window;
thirdly, punching a separating finger groove, namely placing the diaphragm spring punched with the window in the second step on a separating finger groove punching machine to punch a separating finger groove;
step four, extruding a window fillet, placing the diaphragm spring punched with the separation finger groove in the step three on a press machine, and directly extruding the window fillet in one step through a window fillet die;
step five, cold press forming, namely placing the diaphragm spring with the window fillet extruded in the step four on a press machine, and cold press forming the angle of the diaphragm spring and the separating finger hook through a cold press forming die;
step six, quenching, namely heating the diaphragm spring formed by cold pressing in the step five in a mesh belt furnace at 860 +/-10 ℃, and cooling the heated diaphragm spring by using oil in an oil groove;
seventhly, tempering at a medium temperature, namely putting the diaphragm spring quenched in the sixth step into a mesh belt tempering furnace, and tempering at the medium temperature of 380 +/-10 ℃;
step eight, performing high-frequency quenching on the separation finger end of the diaphragm spring by using a high-frequency machine, heating the separation finger end of the diaphragm spring to 860 +/-10 ℃, and rapidly cooling the separation finger end by using water after heating to improve the hardness of the separation finger;
ninth, low-temperature tempering is carried out, wherein the temperature is 200 +/-10 ℃;
step ten, shot blasting;
and step eleven, detection.
The cold-pressing forming die comprises an upper die plate, an upper backing plate, a forming male die, a guide sleeve, a guide pillar, a forming female die holding plate, a forming female die, a lower backing plate and a lower die plate;
the forming male die consists of a cuboid and an isosceles trapezoid integrally formed with the cuboid, and an arc-shaped bulge is arranged at the joint of the upper bottom edge and the two waists of the isosceles trapezoid;
the forming male die is designed according to the shape of the diaphragm spring, the arc-shaped bulge on the forming male die is designed according to the shape of the diaphragm spring separation finger hook, the arc length M = R5-R10 mm of the arc-shaped bulge, R is the arc radius, and the depth H = 4-6 mm of the arc-shaped bulge is convenient for the rapid formation of the separation finger hook shape, and no interference exists;
the forming female die is a cuboid, and the upper surface of the forming female die is provided with a concave part which can be fitted with the isosceles trapezoid shape of the forming male die;
the forming male die is inverted and fixedly connected with the upper die plate, and an upper base plate is arranged between the forming male die and the upper die plate;
the forming female die is fixed on the lower die plate, a lower backing plate is also arranged between the forming female die and the lower die plate, and the forming female die holding plate and the forming female die are fastened together;
the upper template and the lower template are connected through a guide sleeve and a guide pillar, the guide sleeve is installed on the upper template, and the guide pillar is installed on the lower template corresponding to the guide sleeve.
And sixthly, quenching, namely cooling the diaphragm spring by using oil in an oil groove after the diaphragm spring is heated, and not requiring a forming die and a hydraulic machine.
And step eight, the separation refers to high-frequency quenching, and a separation-finger forming die and a hydraulic press are not needed.
In the diaphragm spring processing technology, a punch used in the step one, a window punch used in the step two, a separating finger groove punch used in the step three and a window fillet die used in the step four are all in the prior art.
In the diaphragm spring processing technology, the cold pressing forming die is used for replacing the press quenching forming in the prior art, so that the diaphragm spring forming die, the forming equipment and the press machine are reduced, the cost is reduced, and the production efficiency of the diaphragm spring is improved; the multiple forming is reduced, the accumulated error can be eliminated, the product size precision is improved, the product qualification rate is improved, and the service life and the performance of the diaphragm spring are greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of a cold-press forming die in the diaphragm spring processing technology of the present invention;
FIG. 2 is a schematic structural view of the forming punch of FIG. 1;
in the figure: the device comprises an upper template 1, an upper backing plate 2, a forming male die 3, an arc-shaped bulge 3-1, a fixing screw 4, a guide sleeve 5, a guide pillar 6, a forming female die holding plate 7, a forming female die 8, a concave part 8-1, a fixing pin 9, a lower backing plate 10 and a lower template 11.
FIG. 3 is a schematic structural diagram of a diaphragm spring;
in the figure: r1 is the first angle of the diaphragm spring;
r2 is the second angle of the diaphragm spring;
l is a separation finger hook.
Detailed Description
The present invention will be further described with reference to the following examples and drawings, but the present invention is not limited thereto.
Examples
A diaphragm spring processing technology comprises the following steps:
step one, blanking raw materials of the diaphragm spring and punching a middle hole, namely simultaneously blanking the outer circle shape of the diaphragm spring and punching the middle hole shape on a punch;
secondly, punching a window, namely placing the diaphragm spring prepared in the first step on a window punching machine to punch the shape of the window;
thirdly, punching a separating finger groove, namely placing the diaphragm spring punched with the window in the second step on a separating finger groove punching machine to punch a separating finger groove;
step four, extruding a window fillet, placing the diaphragm spring punched with the separation finger groove in the step three on a press machine, and directly extruding the window fillet in one step through a window fillet die;
step five, cold press forming, namely placing the diaphragm spring with the window fillet extruded in the step four on a press machine, and cold press forming the angle of the diaphragm spring and the separating finger hook through a cold press forming die;
step six, quenching, namely heating the diaphragm spring formed by cold pressing in the step five in a mesh belt furnace at 860 +/-10 ℃, and cooling the heated diaphragm spring by using oil in an oil groove;
seventhly, tempering at a medium temperature, namely putting the diaphragm spring quenched in the sixth step into a mesh belt tempering furnace, and tempering at the medium temperature of 380 +/-10 ℃;
step eight, performing high-frequency quenching on the separation finger end of the diaphragm spring by using a high-frequency machine, heating the separation finger end of the diaphragm spring to 860 +/-10 ℃, and rapidly cooling the separation finger end by using water after heating to improve the hardness of the separation finger;
ninth, low-temperature tempering is carried out, wherein the temperature is 200 +/-10 ℃;
step ten, shot blasting;
and step eleven, detection.
Referring to fig. 1-3, the cold press forming die in the fifth step includes an upper die plate 1, an upper backing plate 2, a forming male die 3, a fixing screw 4, a guide sleeve 5, a guide pillar 6, a forming female die holding plate 7, a forming female die 8, a fixing pin 9, a lower backing plate 10 and a lower die plate 11;
the forming male die 3 consists of a cuboid and an isosceles trapezoid integrally formed with the cuboid, and an arc-shaped bulge 3-1 is arranged at the joint of the upper bottom edge and the two waists of the isosceles trapezoid;
the forming punch 3 is designed according to the shape of the diaphragm spring, as shown in fig. 3; the arc-shaped bulge 3-1 on the forming convex die 3 is designed according to the shape of a hook L of a diaphragm spring separation finger, the arc length M = R5-R10 mm of the arc-shaped bulge 3-1, R is the radius of an arc, and the depth H = 4-6 mm of the arc-shaped bulge 3-1, as shown in figure 2;
the forming female die 8 is a cuboid, and the upper surface of the forming female die is provided with a concave part 8-1 which can be fitted with the isosceles trapezoid shape of the forming male die 3;
the forming male die 3 is inverted and fixedly connected with the upper die plate 1 through a fixing screw 4, and an upper base plate 2 is arranged between the forming male die 3 and the upper die plate 11;
the forming female die 8 is fixed on a lower template 11 through a fixing pin 9, a lower cushion plate 10 is arranged between the forming female die 8 and the lower template 11, the forming female die holding plate 7 is fastened with the forming female die 8, and the forming female die holding plate 7 plays a role in positioning besides the role of protecting the forming female die 8;
the upper template 1 and the lower template 11 are connected through a guide sleeve 5 and a guide post 6, the guide sleeve 5 is installed on the upper template 1, and the guide post 6 is installed on the lower template 11 corresponding to the guide sleeve 5.
In the diaphragm spring processing technology, the cold press forming die is used for replacing the press quenching forming in the prior art, so that the diaphragm spring forming die, the forming equipment and the press machine are reduced, the cost is reduced, and the production efficiency of the diaphragm spring is improved.
Claims (3)
1. A diaphragm spring processing technology is characterized by comprising the following steps:
step one, blanking raw materials of the diaphragm spring and punching a middle hole, namely simultaneously blanking the outer circle shape of the diaphragm spring and punching the middle hole shape on a punch;
secondly, punching a window, namely placing the diaphragm spring prepared in the first step on a window punching machine to punch the shape of the window;
thirdly, punching a separating finger groove, namely placing the diaphragm spring punched with the window in the second step on a separating finger groove punching machine to punch a separating finger groove;
step four, extruding a window fillet, placing the diaphragm spring punched with the separation finger groove in the step three on a press machine, and directly extruding the window fillet in one step through a window fillet die;
step five, cold press forming, namely placing the diaphragm spring with the window fillet extruded in the step four on a press machine, and cold press forming the angle of the diaphragm spring and the separating finger hook through a cold press forming die;
step six, quenching, namely heating the diaphragm spring formed by cold pressing in the step five in a mesh belt furnace at 860 +/-10 ℃, and cooling the heated diaphragm spring by using oil in an oil groove;
seventhly, tempering at a medium temperature, namely putting the diaphragm spring quenched in the sixth step into a mesh belt tempering furnace, and tempering at the medium temperature of 380 +/-10 ℃;
step eight, performing high-frequency quenching on the separation finger end of the diaphragm spring by using a high-frequency machine, heating the separation finger end of the diaphragm spring to 860 +/-10 ℃, and rapidly cooling the separation finger end by using water after heating to improve the hardness of the separation finger;
ninth, low-temperature tempering is carried out, wherein the temperature is 200 +/-10 ℃;
step ten, shot blasting;
and step eleven, detection.
2. The process for manufacturing a diaphragm spring according to claim 1, wherein:
the cold-pressing forming die comprises an upper die plate, an upper backing plate, a forming male die, a guide sleeve, a guide pillar, a forming female die holding plate, a forming female die, a lower backing plate and a lower die plate;
the forming male die consists of a cuboid and an isosceles trapezoid integrally formed with the cuboid, and an arc-shaped bulge is arranged at the joint of the upper bottom edge and the two waists of the isosceles trapezoid;
the forming female die is a cuboid, and the upper surface of the forming female die is provided with a concave part which can be fitted with the isosceles trapezoid shape of the forming male die;
the forming male die is inverted and fixedly connected with the upper die plate, and an upper base plate is arranged between the forming male die and the upper die plate;
the forming female die is fixed on the lower die plate, a lower backing plate is also arranged between the forming female die and the lower die plate, and the forming female die holding plate and the forming female die are fastened together;
the upper template and the lower template are connected through a guide sleeve and a guide pillar, the guide sleeve is installed on the upper template, and the guide pillar is installed on the lower template corresponding to the guide sleeve.
3. The process for manufacturing a diaphragm spring according to claim 2, wherein:
the forming male die is designed according to the shape of the diaphragm spring, the arc-shaped protrusion on the forming male die is designed according to the shape of a hook of a diaphragm spring separation finger, the arc length M = R5-R10 mm of the arc-shaped protrusion, R is the radius of an arc, and the depth H = 4-6 mm of the arc-shaped protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110096816.9A CN112547902B (en) | 2021-01-25 | 2021-01-25 | Diaphragm spring processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110096816.9A CN112547902B (en) | 2021-01-25 | 2021-01-25 | Diaphragm spring processing technology |
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| Publication Number | Publication Date |
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| CN112547902A true CN112547902A (en) | 2021-03-26 |
| CN112547902B CN112547902B (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110096816.9A Active CN112547902B (en) | 2021-01-25 | 2021-01-25 | Diaphragm spring processing technology |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09143566A (en) * | 1995-11-21 | 1997-06-03 | Exedy Corp | Diaphragm spring and method for heat treating the same |
| CN101655129A (en) * | 2009-09-21 | 2010-02-24 | 湖北大帆汽车零部件有限公司 | Diaphragm spring and finger tip thermal processing process thereof |
| CN101664788A (en) * | 2009-09-09 | 2010-03-10 | 浙江龙华汽配制造有限公司 | Manufacture process improvement of diaphragm springs |
| CN102284606A (en) * | 2011-08-05 | 2011-12-21 | 桂林福达股份有限公司 | Optimized stamping process for diaphragm spring with DST (direct solution treatment) structure |
| CN102974715A (en) * | 2012-12-24 | 2013-03-20 | 桂林福达股份有限公司 | Optimized stamping process of DST structure cover |
| CN202991927U (en) * | 2012-11-23 | 2013-06-12 | 浙江龙华汽配制造有限公司 | Diaphragm spring improved structure |
| CN104338820A (en) * | 2014-10-20 | 2015-02-11 | 重庆长安离合器制造有限公司 | Continuous punching method of diaphragm spring |
| CN106271405A (en) * | 2016-08-16 | 2017-01-04 | 湖北大帆汽车零部件有限公司 | A kind of diaphragm spring processing technique |
| CN107338400A (en) * | 2017-07-05 | 2017-11-10 | 南京钢铁股份有限公司 | A kind of production technology of automobile diaphragm spring SUP6 spring steel |
-
2021
- 2021-01-25 CN CN202110096816.9A patent/CN112547902B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09143566A (en) * | 1995-11-21 | 1997-06-03 | Exedy Corp | Diaphragm spring and method for heat treating the same |
| CN101664788A (en) * | 2009-09-09 | 2010-03-10 | 浙江龙华汽配制造有限公司 | Manufacture process improvement of diaphragm springs |
| CN101655129A (en) * | 2009-09-21 | 2010-02-24 | 湖北大帆汽车零部件有限公司 | Diaphragm spring and finger tip thermal processing process thereof |
| CN102284606A (en) * | 2011-08-05 | 2011-12-21 | 桂林福达股份有限公司 | Optimized stamping process for diaphragm spring with DST (direct solution treatment) structure |
| CN202991927U (en) * | 2012-11-23 | 2013-06-12 | 浙江龙华汽配制造有限公司 | Diaphragm spring improved structure |
| CN102974715A (en) * | 2012-12-24 | 2013-03-20 | 桂林福达股份有限公司 | Optimized stamping process of DST structure cover |
| CN104338820A (en) * | 2014-10-20 | 2015-02-11 | 重庆长安离合器制造有限公司 | Continuous punching method of diaphragm spring |
| CN106271405A (en) * | 2016-08-16 | 2017-01-04 | 湖北大帆汽车零部件有限公司 | A kind of diaphragm spring processing technique |
| CN107338400A (en) * | 2017-07-05 | 2017-11-10 | 南京钢铁股份有限公司 | A kind of production technology of automobile diaphragm spring SUP6 spring steel |
Non-Patent Citations (1)
| Title |
|---|
| 刘香国等: "离合器膜片弹簧的感应回火生产线", 《金属热处理》 * |
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