CN104120235A - Thermal treatment deformation control method for slide rail parts with unequal heights of vertical tendons - Google Patents
Thermal treatment deformation control method for slide rail parts with unequal heights of vertical tendons Download PDFInfo
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- CN104120235A CN104120235A CN201410299025.6A CN201410299025A CN104120235A CN 104120235 A CN104120235 A CN 104120235A CN 201410299025 A CN201410299025 A CN 201410299025A CN 104120235 A CN104120235 A CN 104120235A
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- press strip
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Abstract
The invention provides a thermal treatment deformation control method capable of well controlling a plurality of precise faces of a part and particularly provides a thermal treatment deformation control method for slide rail parts with unequal heights of vertical tendons. A deformation control clamp is comprised, a locating platform of the clamp has a theoretical appearance which is the same as that of the lower surface of a planar flange of the part, a positioning core is matched between two vertical tenons of the part, a positioning depression bar is an L-shaped structural block, and a column is formed by a plurality of square rigid frames fixed on two sides of the clamp body. After the part is placed on the upper surface of the positioning platform to be positioned, the deformation control clamp and the part are thermally treated together, and finally, the part and the deformation control clamp are separated.
Description
Technical field
The invention belongs to aircraft manufacturing technical field, relate to part heat treatment deformation control techniques, specifically the unequal slide rail class of a kind of aircraft stud height part method for controlling heat treatment deformation.
Background technology
The unequal slide rail class of aircraft stud height 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 carry out repeatedly digital control processing, rough mill, half finish-milling, the multiple working procedures such as finish-milling.
In the mechanical processing process of part, can produce great internal stress, if these internal stresss can not get effective release, can make part 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 is large, once part distortion is difficult to proofread and correct, its workload is very large, and the cycle is very long; If distortion is serious, also can cause part to scrap.The schedule requirement that this not only can cause huge economic waste but also impact to produce.Therefore, after part digital control processing each time, all to carry out stress relief annealing.
Stress relief annealing is that part is heated to proper temperature, is cooled to a kind of processing method of room temperature after insulation certain hour again.This be one cooling from being heated to, the process that volume of part and micro-metallographic structure change, the generation of thermal stresses and structural stress is inevitable, therefore part in this process, produce distortion be also inevitable, and part is larger, thiner, the distortion of generation also just more greatly, more serious, more serious distortion will make correction work more difficult, even causes part to scrap.
Along with the raising of present generation aircraft to manufacturing technology accuracy requirement, adopt control distortion special tooling as constraint limit and correct the distortion of part in heat treatment process become gesture become.So heat treatment deformation control special tooling arises at the historic moment.This type of frock is different from common machining tool, be repeatedly repeatedly then under cooling cold cycling state, works in heat, there will be and expands with heat and contract with cold, and self also will be faced with the problem of cold and hot distortion.Therefore, heat treatment deformation control special tooling will be in conjunction with the constructional feature of part, how, in the situation that ensureing that frock self structure is stable, also will play the effect of controlling product parts distortion, and this is the current difficult problem facing.
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 well the multiple precision faces of part, particularly to the unequal slide rail class of stud height part method for controlling heat treatment deformation.
The unequal slide rail class of a kind of stud height part method for controlling heat treatment deformation, described part is made up of thin wall shape plane wing plate and two highly unequal studs that run through wing plate, the theoretical profile of known part, it is characterized in that: 1) comprise a Deformation control fixture, this fixture contains chuck body, be fixed on the locating platform in chuck body, locating core, location press strip, be fixed on column and wedge and web member in chuck body, 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 mates between two studs of part, described location press strip is the block structure of a L shape, the tail end of press strip is an inclined-plane, coordinate and hold out against soon with wedge shape, 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 that are fixed on chuck body both sides, there is the hole of passing through of location press strip the inner side of column, there is the patchhole of wedge the upper end of column, 2) upper surface that part is placed in to locating platform is located, locating core is placed in to 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 to the hole of passing through on column, be fitted in the outer surface of stud with the boss of the corresponding locating core of the front end of positioning strip, the upper surface of the side crimping part wing plate of positioning strip, between top-portion apertures insertion press strip tail end and stud wall with the fast Self-stabilised post of wedge shape, 3) after being heat-treated together with part, Deformation control fixture again part is separated with Deformation control fixture.
The invention has the advantages that:
1) the present invention adopts the heat treatment deformation of the preset pieces of a set of frock and multiple precision faces of the unequal slide rail class of press strip control titanium alloy stud height part, cost-saving, raises the efficiency.
2) clamp structure is reasonable, manufactures easy to use;
3) fixture is manufactured according to the theoretical profile precision work of part, also has the school shape function to part.
Below in conjunction with implementing illustration, the application is described in further detail:
Brief description of the drawings
Fig. 1 is the signal of the unequal slide rail class of aircraft stud height design of part
Fig. 2 is the signal of the unequal slide rail class of aircraft stud height 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 locating platform structural representation
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
Referring to accompanying drawing, part in embodiment is the unequal slide rail class of the middle stud height 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 are thick in 4mm, part 1 by plane wing plate 1 and two highly stud 2 not etc. form, two sides of the wing plate top and bottom of part and two studs are all precision faces, must control the face of distortion, highly unequal two studs are perpendicular to plane wing plate, stud root is focal point of stress, when stress relief, can there is moderate finite deformation in stud, the design theory shape data of known this part.
In order to control the distortion of this part in heat treatment process, the invention discloses control method as shown in Figure 2,
The unequal slide rail class of a kind of stud height part method for controlling heat treatment deformation, first there is a Deformation control fixture, 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 and wedge 9 and web member in chuck body, 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 mates 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 and hold out against with wedge shape fast 9, 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 that are fixed on chuck body both sides, there is the hole of passing through of location press strip the inner side of column, there is the patchhole of wedge the upper end of column, when thermal treatment, in order to prevent the distortion of part, part 1 is placed in to the upper surface location of locating platform 5, locating core 6 is placed in to the centre of two studs 3, the surface label of locating core boss 10 is combined in the inner surface of stud, the tail end of location press strip 7 is inserted to the hole of passing through of column 8 inner sides, with the boss of the corresponding locating core of 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 and locates between press strip tail end and stud wall by the top-portion apertures of fast 9 Self-stabilised posts of wedge shape, finally, after being heat-treated together with part, Deformation control fixture again part is separated with Deformation control fixture.
Concrete Deformation control feature of the present invention is as follows:
(1) first, clamp body adopts transverse and longitudinal stainless steel plate welded construction, and frock self will have higher structural stability, not yielding.Should ensure the rigidity of frock, also need to alleviate the weight of frock.
(2) add thermal expansivity difference due to differing materials, locating platform 5 with 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, molecular structure close 1Cr18Ni9Ti with it is all selected at other positions, can realize under the prerequisite of conformal function like this, reduce frock cost.
(3) the present invention not only considers to prevent part deformation, more considers conformal, allows product in the tolerance zone internal strain allowing, and is retrained the distortion of two studs of part by the locating core 6 in the middle of stud and stud location press strip 7.In order to alleviate frock weight, the stud that is positioned at the side that the stud location press strip 7 of the side that stud is high is low with being positioned at stud is located press strip 7 sizes 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 pin 10 can make frock effectively locate part, to ensure the requirement of structural shape size conforms product digital-to-analogue of part.
(5) consider to need heating and heat radiation in heat treatment process, make part in a good heat treatment environment, on the locating core 6 in the middle of stud, offer ventilation hole and lightening grooves.On the press strip 7 of stud location, also have lightening hole.
(6), according to part length, compression point is evenly set.For preventing that, after metallic substance temperature distortion, screw thread cannot turn, 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 is located to press strip 7 one end faces, another face is adjacent to plane wing plate, and to fix part motionless, can not apply excessive strength, otherwise be unfavorable for the release of compression place part stress.
Claims (2)
1. the unequal slide rail class of a stud height part method for controlling heat treatment deformation, described part is made up of thin wall shape plane wing plate and two highly unequal studs that run through wing plate, the theoretical profile of known part, it is characterized in that: 1) comprise a Deformation control fixture, this fixture contains chuck body, be fixed on the locating platform in chuck body, locating core, location press strip, be fixed on column and wedge in chuck body, 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 mates between two studs of part, described location press strip is the block structure of a L shape, the tail end of press strip is an inclined-plane, coordinate and hold out against soon with wedge shape, 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 that are fixed on chuck body both sides, there is the hole of passing through of location press strip the inner side of column, there is the patchhole of wedge the upper end of column, 2) upper surface that part is placed in to locating platform is located, locating core is placed in to 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 to the hole of passing through on column, with the boss of the corresponding locating core of 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 and locates between press strip tail end and stud wall by the top-portion apertures of the fast Self-stabilised post of wedge shape, 3) after being heat-treated together with part, Deformation control fixture again part is separated with Deformation control fixture.
2. the unequal slide rail class of a stud height part heat treatment deformation control fixture, it is characterized in that: comprise a Deformation control fixture, this fixture contains chuck body, be fixed on the locating platform in chuck body, locating core, location press strip, be fixed on column and wedge and web member in chuck body, 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 mates between two studs of part, described location press strip is the block structure of a L shape, the tail end of press strip is an inclined-plane, coordinate and hold out against soon with wedge shape, 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 that are fixed on chuck body both sides, there is the hole of passing through 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 true CN104120235A (en) | 2014-10-29 |
| CN104120235B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| 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 |
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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 |
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| 俸跃伟等: "辅助支承夹具在薄壁机匣加工中的应用", 《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》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN104120235B (en) | 2016-02-24 |
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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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