CN103028620A - Thermode draw forming method - Google Patents
Thermode draw forming method Download PDFInfo
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- CN103028620A CN103028620A CN2012105912156A CN201210591215A CN103028620A CN 103028620 A CN103028620 A CN 103028620A CN 2012105912156 A CN2012105912156 A CN 2012105912156A CN 201210591215 A CN201210591215 A CN 201210591215A CN 103028620 A CN103028620 A CN 103028620A
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- thermode
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- thermocouple cable
- armoured thermocouple
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Abstract
The invention belongs to a thermode processing technique, and relates to a thermode draw forming method. The method comprises the steps that an armored thermocouple cable is arranged on a rack and passes through a circular through hole which is formed by the rack and a fixed forming die and used for drawing; and the end part of a traction direction of the armored thermocouple cable is fixed by a clamping device. Accordign to the thermode draw forming method, an armored thermocouple is subjected to unidirectional traction and passes through the die with a certain dimension; when the armored thermocouple cable passes through the smooth forming die with a small hole diameter, the outside diameter of the armored thermocouple cable is reduced due to cross extrusion of the die; the fixed forming dies with the circular through holes in different dimensions are replaced successively; and a final forming purpose is achieved. The thermode draw forming method can effectively prevent thermo wires of the thermocouple from being twisted and prevent a housing of the thermocouple from being cracked, the practical yield is increased to above 90%, a sensor meets the requirements after trial run use, a larger economic benefit is generated, and the method has a larger practical application value.
Description
Technical field
The invention belongs to the thermode process technology, relate to a kind of thermode drawing method for processing forming.
Background technology
The advantages such as armoured thermocouple is simple in structure with it, dynamic response is fast, mechanical strength is high, good seal performance are widely used at aerospace field.Along with the development of aero-engine, automaticity and the complexity of various systems progressively increase, and the information content that need to obtain is more and more, and be more and more higher to response time and the precision reliability requirement of sensor.So traditional thermocouple sensor, poor because of its function, volume greatly has been difficult to meet the demands again and will have been eliminated gradually, therefore the structure of airborne thermocouple sensor is towards miniaturization, lightweight, microminiaturized future development, the structure optimization of sensor and loss of weight work are imperative.
We find that the thermal response time of sensor that the thermode size is respectively Φ 2mm, Φ 2.5mm is respectively 2.39s, 2.79s to contrast domestic armoured thermocouple formula thermal response time of sensor.Therefore the diameter that reduces armoured thermocouple cable becomes small-sized, the light-weighted main path of present stage realization armoured thermocouple formula sensor, and it can effectively alleviate the weight of thermocouple sensor, the response time of improving thermode.
Take the mode of secondary operations to reduce the thermode head dimensions in the actual production process more.Traditional armoured thermocouple secondary operations mostly is the processing technology of swaging, this process is by reaching the purpose that armoured thermocouple cable is attenuated to armoured thermocouple cable rotary squeezing radially, but causes easily inner thermo wires hank knotting and shell to be prone to crackle in this processing mode process.Therefore, when armoured thermocouple cable length is longer, swage processing percent defective very high.
Summary of the invention
The objective of the invention is: a kind of thermode drawing method for processing forming is provided, and thermo wires is not subject to cross force in the process, can not cause the hank knotting of thermo wires, has solved the problem of shell crackle simultaneously yet.
Technical scheme of the present invention is: a kind of thermode drawing method for processing forming, it comprises the steps:
Step 1:
Armoured thermocouple cable one termination section is machined to less than the final demand size, makes armoured thermocouple cable can pass mould and be connected with draw-gear;
Step 2:
Select than the fixed-type mould of the little 0.1mm specification of armoured thermocouple cable external diameter and after being fixed on the stand, the armoured thermocouple cable that step 1 is machined passes mould and is fixed on the draw-gear, start draw-gear, the armoured thermocouple cable of fixed-type mould manhole is passed in the traction drawing, and traction is to thinking that greater than final demand length subsequent handling provides the pruning surplus;
Step 3:
Behind the fixed-type mould of replacing than the little 0.1mm of step 2 manhole specification, the operation of repeating step 2, the fixed-type mould manhole size of successively decreasing successively is to the final demand external diameter;
Step 4:
Take off armoured thermocouple cable, obtain the armouring thermode of final demand specification behind the pruning length dimension.
Described fixed-type mould arranges Φ 1mm-Φ 5mm series size manhole take 0.1mm as step-length.
The edge of manhole is done rounding and is processed, and fillet is of a size of R2mm.
Draw-gear with the speed of 50mm/s traction armoured thermocouple cable by mould, traction to greater than final demand length 20mm the time till.
Technique effect of the present invention is: thermode drawing method for processing forming of the present invention adopts one by one drawing armoured thermocouple cable of special fixed-type mould, and control drawing speed, thereby effectively avoid thermocouple thermo wires hank knotting and shell crackle to occur, actual yield rate is increased to more than 90%, and sensor uses through test run and meets the requirements, produce larger economic benefit, have larger actual application value.
Description of drawings
Fig. 1 is the principle schematic of thermode drawing method for processing forming of the present invention;
Fig. 2 is the mould schematic diagram,
Wherein: 1-clamping device; 2-fixed-type mould; 3-armoured thermocouple cable; 4-stand; 5-manhole; 6-fixedly mounts the hole.
The specific embodiment
Below by specific embodiment the present invention is described in detail:
See also Fig. 1, it is the principle schematic of thermode drawing method for processing forming of the present invention.Armoured thermocouple cable 3 is arranged on the stand 4, pass the manhole that is used for drawing that stand and fixed-type mould 2 consist of, and the end of armoured thermocouple cable 3 leads is provided with clamping device.
See also Fig. 2, it is the structural representation of fixed-type mould.Described fixed-type mould is fixed on the stand 4 by the fixed installation hole for the middle boss structure that is provided with for the manhole of drawing, both sides.And fixed-type mould arranges Φ 1mm-Φ 5mm series size manhole take 0.1mm as step-length, and the edge in hole is done rounding and processed, and fillet is of a size of R2mm.
Thermode drawing method for processing forming of the present invention is by carrying out the one direction traction and making it pass through the mould of certain size specification to armoured thermocouple, and have the fixed-type mould of different size manhole by changing one by one, thereby reach the purpose of final molding.When armoured thermocouple cable during by round and smooth small size aperture mould, dwindle its outside dimension when being subject to the horizontal extruding of mould, its concrete steps are as follows:
Step 1:
The mode of armoured thermocouple cable one end with machining (extruding) is machined to head less than the final demand size, makes armoured thermocouple cable can pass mould and be connected with draw-gear.
Step 2:
Select than the mould of the little 0.1mm specification of armoured thermocouple cable external diameter and after being fixed on the stand, the armoured thermocouple cable that step 1 is machined passes mould and is fixed on the draw-gear, applies lubricating grease to prevent that mould is to the armoured thermocouple cable injury in the mould porch after guaranteeing the smooth foreign in mould porch.The startup draw-gear draws armoured thermocouple cable by mould with the speed of 50mm/s, only provides the pruning surplus for subsequent handling when drawing extremely greater than final demand length 20mm.
Step 3:
Behind the mould of replacing than the little 0.1mm of step 2 specification, the operation of repeating step 2, the die size that successively decreases successively is to the final demand external diameter.
Step 4:
Take off armoured thermocouple cable, obtain the armouring thermode of final demand specification behind the pruning length dimension.
Among certain embodiment, the present invention will adopt the drawing forming technique that the thermocouple temperature measurement end is machined to Φ 1.5mm for the thermocouple that certain h type engine h need be monitored its fan bearing temperature, thereby effectively alleviate the weight of thermocouple sensor, the response time of improving thermode, and in process, can effectively avoid thermocouple thermo wires hank knotting and shell crackle to occur, actual yield rate is increased to more than 90%, and sensor uses through test run and meets the requirements, produce larger economic benefit, have larger actual application value.
Claims (4)
1. a thermode drawing method for processing forming is characterized in that, comprises the steps:
Step 1:
Armoured thermocouple cable one termination section is machined to less than the final demand size, makes armoured thermocouple cable can pass mould and be connected with draw-gear;
Step 2:
Select than the fixed-type mould of the little 0.1mm specification of armoured thermocouple cable external diameter and after being fixed on the stand, the armoured thermocouple cable that step 1 is machined passes mould and is fixed on the draw-gear, start draw-gear, the armoured thermocouple cable of fixed-type mould manhole is passed in the traction drawing, and traction is to thinking that greater than final demand length subsequent handling provides the pruning surplus;
Step 3:
Behind the fixed-type mould of replacing than the little 0.1mm of step 2 manhole specification, the operation of repeating step 2, the fixed-type mould manhole size of successively decreasing successively is to the final demand external diameter;
Step 4:
Take off armoured thermocouple cable, obtain the armouring thermode of final demand specification behind the pruning length dimension.
2. thermode drawing method for processing forming according to claim 1 is characterized in that, described fixed-type mould arranges Φ 1mm-Φ 5mm series size manhole take 0.1mm as step-length.
3. thermode drawing method for processing forming according to claim 2 is characterized in that, the edge of manhole is done rounding and processed, and fillet is of a size of R2mm.
4. thermode drawing method for processing forming according to claim 1 is characterized in that, draw-gear with the speed of 50mm/s traction armoured thermocouple cable by mould, traction to greater than final demand length 20mm the time till.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210591215.6A CN103028620B (en) | 2012-12-27 | 2012-12-27 | Thermode drawing method for processing forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210591215.6A CN103028620B (en) | 2012-12-27 | 2012-12-27 | Thermode drawing method for processing forming |
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| Publication Number | Publication Date |
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| CN103028620A true CN103028620A (en) | 2013-04-10 |
| CN103028620B CN103028620B (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210591215.6A Active CN103028620B (en) | 2012-12-27 | 2012-12-27 | Thermode drawing method for processing forming |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112642868A (en) * | 2020-12-04 | 2021-04-13 | 中国科学院力学研究所 | Device and method for batch production of thermocouple transient heat flow sensors |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558456A (en) * | 2004-01-20 | 2004-12-29 | Method of making armored thermocouple material | |
| US20050210950A1 (en) * | 2004-03-27 | 2005-09-29 | Mitchell George A | Method of making metal workpiece |
| CN101049613A (en) * | 2007-05-11 | 2007-10-10 | 北京工业大学 | Mode for wire drawing electrode material of multielement composite rare earth tungsten |
| CN201536020U (en) * | 2009-07-22 | 2010-07-28 | 袁勤华 | Armored thermocouple cable |
-
2012
- 2012-12-27 CN CN201210591215.6A patent/CN103028620B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558456A (en) * | 2004-01-20 | 2004-12-29 | Method of making armored thermocouple material | |
| US20050210950A1 (en) * | 2004-03-27 | 2005-09-29 | Mitchell George A | Method of making metal workpiece |
| CN101049613A (en) * | 2007-05-11 | 2007-10-10 | 北京工业大学 | Mode for wire drawing electrode material of multielement composite rare earth tungsten |
| CN201536020U (en) * | 2009-07-22 | 2010-07-28 | 袁勤华 | Armored thermocouple cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112642868A (en) * | 2020-12-04 | 2021-04-13 | 中国科学院力学研究所 | Device and method for batch production of thermocouple transient heat flow sensors |
| CN112642868B (en) * | 2020-12-04 | 2021-09-14 | 中国科学院力学研究所 | Device and method for batch production of thermocouple transient heat flow sensors |
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| CN103028620B (en) | 2015-08-12 |
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