CN103949856A - Method for increasing force value of extension spring - Google Patents
Method for increasing force value of extension spring Download PDFInfo
- Publication number
- CN103949856A CN103949856A CN201410171479.5A CN201410171479A CN103949856A CN 103949856 A CN103949856 A CN 103949856A CN 201410171479 A CN201410171479 A CN 201410171479A CN 103949856 A CN103949856 A CN 103949856A
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- tempering
- spring
- wound around
- processing
- temper
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
- Springs (AREA)
Abstract
The invention belongs to a spring manufacturing technology, and relates to a method for increasing the force value of an extension spring. The method adopts a twice winding technology; a certain stress is generated during the first winding; a pre-tightening force is effectively increased for the second winding because of the principle that the greater the acting force is, the greater the counter-acting force is during the second winding; thus, the force value of the spring is increased, unnecessary trial-manufacture and waste are avoided, and the rolled throughput yield of the elastic part is increased. The method is not only applicable to springs at key parts of a helicopter but also applicable to processing and production of all major parts requiring higher stress.
Description
Technical field
The invention belongs to spring manufacturing technology, relate to a kind of method that improves extension spring power value.
Background technology
The processing of extension spring is at present all to adopt lathe to be wound around one-shot forming, in winding process, lean on workman's manual control biscuit or the propelling of straight material to complete the winding process of extension spring, large, the straight material of general biscuit diameter all can not produce pretightning force when being wound around, cause extension spring when being wound around, to produce the power value that gap directly affects spring, for helicopter, critical component, require heavily stressed spring, be difficult to arrive the power value performance of instructions for use.
In helicopter is produced, centrifugal stop block spring is for propeller hoop, restriction fluctuating effect, this part requires the higher pretightning force of performance will reach the force use value that certain requirement could meet drawing, and existing processing method power value is low, and initial tension is little cannot meet design requirement.
Summary of the invention
The object of the invention is to propose a kind of method that improves extension spring power value.
Technical solution of the present invention is,
1, turner: be wound around for the first time, steel wire be placed on bin with biscuit, the fixing lathe charging folder place, one end of steel wire, according to drawing requirement select to buckle, pitch, carry out close around processing;
2, cut off: the every end of length reserves the surplus cut-out steel wire that secondary is wound around by drawing;
3, temper: by the workpiece tempering stable dimensions twining for the first time, the technological parameter of tempering is determined according to material therefor;
4, by the part air cooling after tempering after room temperature, one end of part is extracted a part of length and is placed on the fixing frock clamp of lathe, is wound around for the second time;
5, temper: the spring after secondary is wound around carries out tempering stable dimensions, and the technological parameter of tempering is determined according to material therefor;
6, the part after tempering is processed crotch by drawing;
7, temper: part is carried out to the stable processing of crotch part;
8, the processing of halting: spring is carried out to 5-10 stretch processing.
The advantage that the present invention has and beneficial effect,
The present invention adopts secondary winding technology, be wound around for the first time and produce certain stress, when being wound around for the second time due to the larger principle of the larger reaction force of active force, thereby for being wound around for the second time, effectively increased the power value that pretightning force has improved spring, to have avoided unnecessary trial-production and waste to improve the once friendship inspection qualification rate of elastic part.This invention is not only applicable to the spring of helicopter key position, is applicable to allly require the processing of the important parts that stress is higher and produce.
The specific embodiment
Concrete grammar of the present invention is as follows:
1, turner: be wound around for the first time, steel wire be placed on bin with biscuit, the fixing lathe charging folder place, one end of material, according to drawing requirement select suitable to buckle, pitch, carry out close around processing.
2, cut off: the every end of length reserves surplus (general every end 3-4 circle) the cut-out steel wire that secondary is wound around on request.
3, temper: by the workpiece tempering stable dimensions twining for the first time.
4, pincers worker: after room temperature, it is standby that one end of part (made allowance part) extracts a part of length charging by the part air cooling after tempering.
5, turner: part is placed on the fixing frock clamp of lathe, extracts part and pack lathe charging folder place into, be wound around for the second time.
6, temper: the spring after secondary is wound around carries out tempering stable dimensions.
7, pincers worker: the part after tempering is processed crotch by drawing.
8, temper: part is carried out to the stable processing of crotch part.
9, the processing of halting: spring is carried out to 5-10 stretch processing in order to eliminate stress.
10, dynamometry: carry out on request the detection of power value.
Embodiment mono-
Preparative centrifugation stop block spring
Drawing requirement:
Material: 1Cr18Ni9 steel wire diameter:
spring outer diameter:
Free height: 60.5 ± 1mm building ring: 38.5 ± 1
First power: length is 68.4 o'clock power value 15.2 ± 1.06N
Second point power: length is 94.4 o'clock power value 22.5 ± 1.57N
1, turner: be wound around for the first time, steel wire be placed on bin with biscuit, the fixing lathe charging folder place, one end of material, according to drawing requirement select to buckle, pitch, carry out closely around processing, guaranteeing spring outer diameter:
2, cut off: the every end of length reserves the surplus that secondary is wound around on request, guarantee that number of effective coils 44.5-46.5 cuts off steel wire.
3, temper: air cooling after the workpiece twining is for the first time incubated to 30 minutes in temperature is the circulating tempering furnace of tempering of 360 ± 10 ℃, stable dimensions.
4, pincers worker: after room temperature, it is standby that one end of part (made allowance part) extracts a part of length charging by the part air cooling after tempering.
5, turner: part is placed on the fixing frock clamp of lathe, extracts part and pack lathe charging folder place into, be wound around for the second time assurance spring outer diameter:
6, temper: air cooling after the spring after secondary is wound around is incubated 30 minutes in temperature is the circulating tempering furnace of tempering of 360 ± 10 ℃, stable dimensions.
7, pincers worker: the part after tempering is processed crotch by drawing, processing dimension 60.5 ± 1, assurance opening size≤3 and size 6 ± 1.
8, temper: air cooling after part after moulding is incubated to 30 minutes in temperature is the circulating tempering furnace of tempering of 360 ± 10 ℃, stable dimensions.
9, the processing of halting: in order eliminating stress, spring to be pulled to length 94.4mm under maximum working load and to carry out 5-10 stretch processing, eliminate machining stress.
10, dynamometry: the part after eliminating stress is carried out on 100 newton's torsion tester to the detection of power value, testing result is as follows:
First power: when spring is pulled to 68.4mm, spring force value is 16N
Second point power: when spring is pulled to 94.4mm, spring force value is 23N
From result of the test, find out that 2 power values all can meet drawing requirement, save raw material, reduce energy resource consumption, guarantee that once handing over inspection qualification rate is 100%.
Embodiment bis-
Preparative centrifugation stop block spring
Drawing requirement:
Material: 70C steel wire diameter:
spring outer diameter:
Free height: 50 ± 1mm building ring: 22 ± 1
First power: length is 65 o'clock power value 57 ± 4N
Second point power: length is 75 o'clock power value 70 ± 6N
1, turner: be wound around for the first time, steel wire be placed on bin with biscuit, the fixing lathe charging folder place, one end of material, according to drawing requirement select to buckle, pitch, carry out closely around processing, guaranteeing spring outer diameter:
2, cut off: the every end of length reserves the surplus that secondary is wound around on request, guarantee that number of effective coils 22-24 cuts off steel wire.
3, temper: air cooling after the workpiece twining is for the first time incubated to 30 minutes in temperature is the circulating tempering furnace of tempering of 280 ± 10 ℃, stable dimensions.
4, pincers worker: after room temperature, it is standby that one end of part (made allowance part) extracts a part of length charging by the part air cooling after tempering.
5, turner: part is placed on the fixing frock clamp of lathe, extracts part and pack lathe charging folder place into, be wound around for the second time assurance spring outer diameter:
6, temper: air cooling after the spring after secondary is wound around is incubated 30 minutes in temperature is the circulating tempering furnace of tempering of 280 ± 10 ℃, stable dimensions.
7, pincers worker: the part after tempering is processed crotch by drawing, processing dimension 50 ± 1, assurance opening size≤3 and size 6 ± 1.
8, temper: air cooling after part after moulding is incubated to 30 minutes in temperature is the circulating tempering furnace of tempering of 280 ± 10 ℃, stable dimensions.
9, the processing of halting: in order eliminating stress, spring to be pulled to length 25mm under maximum working load and to carry out 5-10 stretch processing, eliminate machining stress.
10, dynamometry: the part after eliminating stress is carried out on 100 newton's torsion tester to the detection of power value, testing result is as follows:
First power: when spring is pulled to 65mm, spring force value is 57 ± 4N
Second point power: when spring is pulled to 75mm, spring force value is 70 ± 6N
From result of the test, find out that 2 power values all can meet drawing requirement, save raw material, reduce energy resource consumption, guarantee that once handing over inspection qualification rate is 100%.
Claims (1)
1. a method that improves extension spring power value, is characterized in that,
(1), turner: be wound around for the first time, steel wire be placed on bin with biscuit, the fixing lathe charging folder place, one end of steel wire, according to drawing requirement select to buckle, pitch, carry out close around processing;
(2), cut off: the every end of length reserves the surplus cut-out steel wire that secondary is wound around by drawing;
(3), temper: by the workpiece tempering stable dimensions twining for the first time, the technological parameter of tempering is determined according to material therefor;
(4), by the part air cooling after tempering after room temperature, one end of part is extracted a part of length and is placed on the fixing frock clamp of lathe, is wound around for the second time;
(5), temper: the spring after secondary is wound around carries out tempering stable dimensions, and the technological parameter of tempering is determined according to material therefor;
(6), the part after tempering is processed crotch by drawing;
(7), temper: part is carried out to the stable processing of crotch part;
(8), the processing of halting: spring is carried out to 5-10 stretch processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410171479.5A CN103949856B (en) | 2014-04-25 | 2014-04-25 | A kind of method improving extension spring force value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410171479.5A CN103949856B (en) | 2014-04-25 | 2014-04-25 | A kind of method improving extension spring force value |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103949856A true CN103949856A (en) | 2014-07-30 |
| CN103949856B CN103949856B (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410171479.5A Active CN103949856B (en) | 2014-04-25 | 2014-04-25 | A kind of method improving extension spring force value |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287564A (en) * | 2016-09-30 | 2017-01-04 | 浙江鼎鑫工艺品有限公司 | A kind of lantern |
| CN111715781A (en) * | 2019-03-18 | 2020-09-29 | 深圳市千业精密金属有限公司 | Spring forming process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1771342A (en) * | 2003-04-04 | 2006-05-10 | 泰森克鲁普汽车股份公司 | Method for producing helical springs or stabilisers. |
| CN101439458A (en) * | 2007-11-20 | 2009-05-27 | 上海中国弹簧制造有限公司 | Process for manufacturing heavily stressed valve spring |
| DE102009007020A1 (en) * | 2009-01-31 | 2010-08-26 | Schaeffler Technologies Gmbh & Co. Kg | Coil spring i.e. legless coil spring, for use in e.g. braking system in automobile, has body formed by winding of wire material, where wire material forms cross section having flattening part in axial plane that comprises spring center axis |
| CN101829882A (en) * | 2010-01-11 | 2010-09-15 | 安徽安簧机械股份有限公司 | Manufacture method of variable cross-section reed with high strength of more than 1800 MPa |
-
2014
- 2014-04-25 CN CN201410171479.5A patent/CN103949856B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1771342A (en) * | 2003-04-04 | 2006-05-10 | 泰森克鲁普汽车股份公司 | Method for producing helical springs or stabilisers. |
| CN101439458A (en) * | 2007-11-20 | 2009-05-27 | 上海中国弹簧制造有限公司 | Process for manufacturing heavily stressed valve spring |
| DE102009007020A1 (en) * | 2009-01-31 | 2010-08-26 | Schaeffler Technologies Gmbh & Co. Kg | Coil spring i.e. legless coil spring, for use in e.g. braking system in automobile, has body formed by winding of wire material, where wire material forms cross section having flattening part in axial plane that comprises spring center axis |
| CN101829882A (en) * | 2010-01-11 | 2010-09-15 | 安徽安簧机械股份有限公司 | Manufacture method of variable cross-section reed with high strength of more than 1800 MPa |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287564A (en) * | 2016-09-30 | 2017-01-04 | 浙江鼎鑫工艺品有限公司 | A kind of lantern |
| CN111715781A (en) * | 2019-03-18 | 2020-09-29 | 深圳市千业精密金属有限公司 | Spring forming process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103949856B (en) | 2016-06-01 |
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