CN104120235B - A kind of stud height unequal slide rail class part method for controlling heat treatment deformation - Google Patents
A kind of stud height unequal slide rail class part method for controlling heat treatment deformation Download PDFInfo
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- CN104120235B CN104120235B CN201410299025.6A CN201410299025A CN104120235B CN 104120235 B CN104120235 B CN 104120235B CN 201410299025 A CN201410299025 A CN 201410299025A CN 104120235 B CN104120235 B CN 104120235B
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Abstract
The invention provides a kind of method for controlling heat treatment deformation that can control the multiple precision face of part well, particularly to stud height unequal slide rail class part method for controlling heat treatment deformation, comprise a deformation control clamp, the locating platform of this fixture has the theoretical profile identical with part plane wing plate lower surface, locating core coupling is between part two studs, described location press strip is the block structure of a L shape, column is multiple square rigid frames being fixed on chuck body both sides, after part being placed in the upper surface location of locating platform, deformation control clamp is heat-treated together with part, finally again part is separated with deformation control clamp.
Description
Technical field
The invention belongs to aircraft manufacturing technical field, relate to part heat treatment deformation control techniques, specifically a kind of aircraft stud height unequal slide rail class part method for controlling heat treatment deformation.
Background technology
Aircraft stud height unequal slide rail class part, structure is thin, mostly is the deep groove structure of the vertical stud of large planar band, highly unequal between stud.Length is long, belongs to thin-wall part.Need repeatedly digital control processing be carried out, rough mill, half finish-milling, the multiple working procedures such as finish-milling.
In the mechanical processing process of part, great internal stress can be produced, if these internal stresss can not get effective release, part can be made to produce gross distortion, or leave hidden danger in part military service process, cause stress concentration and the dire consequences of product fracture occurs.
Titanium alloy material intensity is high, elasticity large, and part, once distortion, is difficult to correct, and its workload is very large, and the cycle is very long; If distortion is serious, also part rejection can be caused.This schedule requirement that huge economic waste but also impact not only can be caused to produce.Therefore, after part digital control processing each time, all stress relief annealing will be carried out.
Stress relief annealing is by heat parts to proper temperature, is cooled to a kind of processing method of room temperature after held for some time again.This be one from being heated to cooling, the process that volume of part and micro-metallographic structure change, the generation of thermal stresses and structural stress is inevitable, therefore part produces distortion in the process is also inevitable, and part is larger, thiner, the distortion of generation also more greatly, more serious, more serious distortion will make correction work more difficult, even causes part rejection.
Along with present generation aircraft is to the raising of manufacturing technology accuracy requirement, adopting the special tooling of controlling distortion to limit and correct the distortion of part in heat treatment process as constraint becomes gesture and become.So heat treatment deformation controls special tooling and arises at the historic moment.This type of frock is different from common machining tool, and work under the cold cycling state that repeatedly repeatedly then cool in heat, there will be and expand with heat and contract with cold, self also will be faced with the problem of cold and hot distortion.Therefore, heat treatment deformation controls special tooling will in conjunction with the constructional feature of part, and how when ensureing that frock self structure is stable, also will play the effect controlling product parts distortion, this is the current difficult problem faced.
Summary of the invention
The object of the present invention is to provide a kind of method for controlling heat treatment deformation that can control the multiple precision face of part well, particularly to stud height unequal slide rail class part method for controlling heat treatment deformation.
A kind of stud height unequal slide rail class part method for controlling heat treatment deformation, described part is made up of thin wall shape plane wing plate and two the highly unequal studs running through wing plate, the theoretical profile of known part, it is characterized in that: 1) comprise a deformation control clamp, this fixture contains chuck body, be fixed on the locating platform in chuck body, locating core, location press strip, be fixed on column in chuck body and wedge and web member, the upper surface of described locating platform has the theoretical profile identical with part plane wing plate lower surface, described locating core is the rectangular pellet structure that both sides are provided with multiple positioning boss, locating core coupling is between part two studs, described location press strip is the block structure of a L shape, the tail end of press strip is an inclined-plane, coordinate soon with wedge shape and hold out against, the front end of press strip is a plane of mating with stud side, the side of press strip is a plane of mating with part wing plate upper surface, described column is multiple square rigid frames being fixed on chuck body both sides, there is the passing hole of location press strip the inner side of column, there is the patchhole of wedge the upper end of column, 2) part is placed in the upper surface location of locating platform, locating core is placed in the centre of two studs, the boss surface of locating core is fitted in the inner surface of stud, the tail end of positioning strip is inserted the passing hole on column, the outer surface of stud is fitted in the boss of the corresponding locating core in the front end of positioning strip, the upper surface of the side crimping part wing plate of positioning strip, inserts between press strip tail end and stud wall by the top-portion apertures of the fast Self-stabilised post of wedge shape, 3) again part is separated with deformation control clamp after deformation control clamp being heat-treated together with part.
The invention has the advantages that:
1) the present invention adopts the preset pieces of a set of frock and press strip to control the heat treatment deformation in multiple precision faces of titanium alloy stud height unequal slide rail class part, cost-saving, raises the efficiency.
2) clamp structure is reasonable, manufactures easy to use;
3) fixture manufactures according to the theoretical profile precision work of part, also has the school shape function to part.
Below in conjunction with enforcement illustration, the application is described in further detail:
Accompanying drawing explanation
Fig. 1 is the signal of aircraft stud height unequal slide rail class design of part
Fig. 2 is the signal of aircraft stud height unequal slide rail class part method for controlling heat treatment deformation;
Fig. 3 is the section structure schematic diagram of Fig. 2;
Fig. 4 is for controlling clamp body and location platform arrangement schematic diagram
Fig. 5 is the location pellet schematic diagram in the middle of stud
Number description: 1 part, 2 wing plates, 3 vertical studs, 4 chuck body, 5 locating platforms, 6 locating cores, 7, location press strip, 8 columns, 9 wedges, 10, boss
Embodiment
See accompanying drawing, part in embodiment is the middle stud height unequal slide rail class part of certain model aircraft, the material of this part is Ti-6Al-4V forging, as shown in Figure 1, part is about 3 meters, wall thickness and muscle thick in 4mm, part 1 by plane wing plate 2 and two highly stud 3 not etc. form, two sides of the wing plate top and bottom of part and two studs are all precision faces, the i.e. face of necessary controlling distortion, highly unequal two studs are perpendicular to plane wing plate, stud root is focal point of stress, during stress relief, can moderate finite deformation be there is in stud, the design theory shape data of this part known.
In order to control the distortion of this part in heat treatment process, the invention discloses control method as shown in Figure 2,
A kind of stud height unequal slide rail class part method for controlling heat treatment deformation, first a deformation control clamp is had, this fixture contains chuck body 4, be fixed on the locating platform 5 in chuck body, locating core 6, location press strip 7, be fixed on column 8 in chuck body and wedge 9 and web member, the upper surface of described locating platform 5 has the theoretical profile identical with the lower surface of part plane wing plate 2, described locating core 6 is rectangular pellet structures that both sides are provided with multiple positioning boss 10, locating core coupling is between two studs 3 of part, described location press strip 7 is block structures of a L shape, the tail end of location press strip 7 is inclined-planes, coordinate with wedge shape fast 9 and hold out against, the front end of location press strip is a plane of mating with stud side, the side of press strip is a plane of mating with part wing plate upper surface, described column 8 is multiple square rigid frames being fixed on chuck body both sides, there is the passing hole of location press strip the inner side of column, there is the patchhole of wedge the upper end of column, during thermal treatment, in order to prevent the distortion of part, part 1 is placed in the upper surface location of locating platform 5, locating core 6 is placed in the centre of two studs 3, the surface of locating core boss 10 is fitted in the inner surface of stud, the tail end of location press strip 7 is inserted the passing hole inside column 8, with the boss of the corresponding locating core in the front end of location press strip, be fitted in the outer surface of stud, the side of location press strip is crimped on the upper surface of part wing plate 2, inserts between location press strip tail end and stud wall by the top-portion apertures of fast 9 Self-stabilised posts of wedge shape, finally, again part is separated with deformation control clamp after deformation control clamp being heat-treated together with part.
Concrete Deformation control feature of the present invention is as follows:
(1) first, clamp body adopts transverse and longitudinal stainless steel plate material welded construction, and frock self will have higher structural stability, not yielding.The rigidity of frock should be ensured, also need the weight alleviating frock.
(2) thermal expansivity difference is added due to differing materials, with the locating platform 5 of part joint place, locating core 6 in the middle of stud adopts the material Ti-6Al-4V identical with product with stud location press strip 7, the 1Cr18Ni9Ti that molecular structure is close with it is all selected at other positions, under the prerequisite realizing conformal function, frock cost can be reduced like this.
(3) the present invention not only considers to prevent part deformation, more considers conformal, namely allows product in the tolerance zone internal strain of permission, locates by the locating core 6 in the middle of stud and stud the distortion that press strip 7 retrains part two studs.In order to alleviate frock weight, the stud being positioned at press strip 7 side low with being positioned at stud, stud location of the high side of stud locates press strip 7 size should be different and different according to the height of two studs.
(4) locating platform 5, the locating core 6 in the middle of stud, the design of stud location press strip 7 and positioning boss 10 can enable frock effectively locate part, to ensure the requirement of the structural shape size conforms product digital-to-analogue of part.
(5) consider to need heating and heat radiation in heat treatment process, make part be in a good heat treatment environment, the locating core 6 in the middle of stud offers ventilation hole and lightening grooves.Stud location press strip 7 also has lightening hole.
(6) according to part length, compression point is evenly set.After preventing metallic substance temperature distortion, screw thread cannot turn, and hold-down mechanism can kill on part, can not adopt screw thread compacted form, and therefore the present invention adopts voussoir compacted form.Because the own gravity of locating core 6 in the middle of stud has played certain pressuring action to part, therefore, the strength of knocking voussoir leans stud stud to be located press strip 7 one end face, another face is adjacent to plane wing plate, and to fix part motionless, excessive strength can not be applied, otherwise be unfavorable for the release of compression place part stress.
Claims (2)
1. a stud height unequal slide rail class part method for controlling heat treatment deformation, described part is made up of thin wall shape plane wing plate and two the highly unequal studs running through wing plate, the theoretical profile of known part, it is characterized in that: 1) comprise a deformation control clamp, this fixture contains chuck body, be fixed on the locating platform in chuck body, locating core, location press strip, be fixed on the column in chuck body and wedge, the upper surface of described locating platform has the theoretical profile identical with part plane wing plate lower surface, described locating core is the rectangular pellet structure that both sides are provided with multiple positioning boss, locating core coupling is between part two studs, described location press strip is the block structure of a L shape, the tail end of press strip is an inclined-plane, coordinate with wedge and hold out against, the front end of press strip is a plane of mating with stud side, the side of press strip is a plane of mating with part wing plate upper surface, described column is multiple square rigid frames being fixed on chuck body both sides, there is the passing hole of location press strip the inner side of column, there is the patchhole of wedge the upper end of column, 2) part is placed in the upper surface location of locating platform, locating core is placed in the centre of two studs, the boss surface of locating core is fitted in the inner surface of stud, the tail end of location press strip is inserted the passing hole on column, with the boss of the corresponding locating core in the front end of location press strip, be fitted in the outer surface of stud, the upper surface of the side crimping part wing plate of location press strip, inserts between location press strip tail end and stud wall by the top-portion apertures of wedge Self-stabilised post, 3) again part is separated with deformation control clamp after deformation control clamp being heat-treated together with part.
2. a stud height unequal slide rail class part heat treatment deformation controls fixture, it is characterized in that: comprise a deformation control clamp, this fixture contains chuck body, be fixed on the locating platform in chuck body, locating core, location press strip, be fixed on column in chuck body and wedge and web member, the upper surface of described locating platform has the theoretical profile identical with part plane wing plate lower surface, described locating core is the rectangular pellet structure that both sides are provided with multiple positioning boss, locating core coupling is between part two studs, described location press strip is the block structure of a L shape, the tail end of press strip is an inclined-plane, coordinate with wedge and hold out against, the front end of press strip is a plane of mating with stud side, the side of press strip is a plane of mating with part wing plate upper surface, described column is multiple square rigid frames being fixed on chuck body both sides, there is the passing hole of location press strip the inner side of column, there is the patchhole of wedge the upper end of column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299025.6A CN104120235B (en) | 2014-06-27 | 2014-06-27 | A kind of stud height unequal slide rail class part method for controlling heat treatment deformation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299025.6A CN104120235B (en) | 2014-06-27 | 2014-06-27 | A kind of stud height unequal slide rail class part method for controlling heat treatment deformation |
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| CN104120235A CN104120235A (en) | 2014-10-29 |
| CN104120235B true CN104120235B (en) | 2016-02-24 |
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| CN201410299025.6A Active CN104120235B (en) | 2014-06-27 | 2014-06-27 | A kind of stud height unequal slide rail class part method for controlling heat treatment deformation |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114908240A (en) * | 2022-06-01 | 2022-08-16 | 沈阳飞机工业（集团）有限公司 | Heat treatment method of TC4 titanium alloy special-shaped structural part with closed angle area |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361535A (en) * | 2001-06-08 | 2002-12-18 | Yanmar Co Ltd | Method and device for clamping thin-walled cylinder |
| CN102168276A (en) * | 2011-04-06 | 2011-08-31 | 上海电机学院 | Heat treatment technology for automobile piston ring |
| CN203484938U (en) * | 2013-09-13 | 2014-03-19 | 强龙科技（苏州）有限公司 | Clamp special for CNC thin-walled workpiece machining |
| CN103878608A (en) * | 2014-01-30 | 2014-06-25 | 无锡透平叶片有限公司 | Clamp used for processing aviation thin-wall blade pitch |
-
2014
- 2014-06-27 CN CN201410299025.6A patent/CN104120235B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361535A (en) * | 2001-06-08 | 2002-12-18 | Yanmar Co Ltd | Method and device for clamping thin-walled cylinder |
| CN102168276A (en) * | 2011-04-06 | 2011-08-31 | 上海电机学院 | Heat treatment technology for automobile piston ring |
| CN203484938U (en) * | 2013-09-13 | 2014-03-19 | 强龙科技（苏州）有限公司 | Clamp special for CNC thin-walled workpiece machining |
| CN103878608A (en) * | 2014-01-30 | 2014-06-25 | 无锡透平叶片有限公司 | Clamp used for processing aviation thin-wall blade pitch |
Non-Patent Citations (1)
| Title |
|---|
| 辅助支承夹具在薄壁机匣加工中的应用;俸跃伟等;《第十五届中国科协年会第13分会场：航空发动机设计、制造与应用技术研讨会论文集》;20130525;第1-5页 * |
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| CN104120235A (en) | 2014-10-29 |
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Address after: No. 710089 in Shaanxi province Xi'an city Yanliang District West Avenue Patentee after: AVIC Xi'an Aircraft Industry Group Co.,Ltd. Address before: 1 No. 710089 Shaanxi province Xi'an city Yanliang District West Avenue Patentee before: AVIC AIRCRAFT Corp. |
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Effective date of registration: 20210615 Address after: 1 No. 710089 Shaanxi province Xi'an city Yanliang District West Avenue Patentee after: AVIC AIRCRAFT Corp. Address before: 1 No. 710089 Shaanxi province Xi'an city Yanliang District West Avenue Patentee before: XI'AN AIRCRAFT BRANCH OF XI'AN AIRCRAFT INTERNATIONAL Corp. |
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