CN114346717B - Clamp combination for controlling machining deformation of unilateral slotting thin-wall waveguide cavity - Google Patents
Clamp combination for controlling machining deformation of unilateral slotting thin-wall waveguide cavity Download PDFInfo
- Publication number
- CN114346717B CN114346717B CN202111583374.7A CN202111583374A CN114346717B CN 114346717 B CN114346717 B CN 114346717B CN 202111583374 A CN202111583374 A CN 202111583374A CN 114346717 B CN114346717 B CN 114346717B
- Authority
- CN
- China
- Prior art keywords
- clamp
- milling
- heat treatment
- waveguide cavity
- deep groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003754 machining Methods 0.000 title claims abstract description 31
- 238000003801 milling Methods 0.000 claims abstract description 52
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000012937 correction Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims description 20
- 230000032683 aging Effects 0.000 claims description 4
- 238000004881 precipitation hardening Methods 0.000 claims description 4
- 239000006104 solid solution Substances 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 5
- 238000012797 qualification Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Waveguides (AREA)
Abstract
The invention relates to a clamp combination for controlling machining deformation of a unilateral slotting thin-wall waveguide cavity, which comprises a back deep groove milling clamp, a front oblique seam milling clamp and a correction heat treatment shape-preserving clamp. According to the structural characteristics of the parts, corresponding profiling limiting clamps are provided for deep groove milling, oblique joint milling and final heat treatment procedures, the rigidity of the asymmetric thin-wall cavity parts is improved, the processing deformation is restrained, and the processing efficiency and the product qualification rate are improved.
Description
Technical Field
The invention relates to the technical field of precision machining of waveguide components, in particular to a machining deformation clamp combination for controlling a unilateral slotting thin-wall waveguide cavity.
Background
The crack waveguide assembly formed by processing and welding the aluminum alloy thin-wall high-precision parts is an important component part in a space-borne radar antenna feeder system, the manufacturing process is complex, the processing difficulty is high, and the processing and manufacturing precision of the thin-wall waveguide cavity is directly closely related to the telecommunication performance index of the product.
The traditional technological scheme of cutting and processing the aluminum alloy thin-wall precise part adopts staged successive cutting, and a plurality of stress relief heat treatment procedures are arranged between the two steps, so that the production efficiency is low, and the requirement on the skill of operators is high. For a unilateral slotting thin-wall waveguide cavity part, the wall thickness of the part is smaller than 0.8mm, the precision requirement is 0.03mm, the non-opposite unilateral slot structure design is extremely easy to generate buckling deformation, the deformation clamp combination is required to be developed and controlled, the production efficiency and the product qualification rate are improved, and the requirement of mass production is met.
Disclosure of Invention
Aiming at the problem that the high-precision unilateral slotting thin-wall waveguide cavity is difficult to mold, the invention provides a clamp combination for controlling machining deformation of the unilateral slotting thin-wall waveguide cavity, which ensures the dimensional precision and the surface quality of the thin-wall, high-precision and low-rigidity aluminum alloy waveguide cavity parts and can realize batch manufacturing of the slotted waveguides.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the clamp assembly for controlling machining deformation of the unilateral slotting thin-wall waveguide cavity comprises a back deep groove milling clamp, a front oblique seam milling clamp and a correction heat treatment shape preserving clamp, wherein the back deep groove milling clamp consists of a deep groove milling clamp bottom plate and a deep groove milling clamp pressing plate, the deep groove milling clamp bottom plate is provided with three transverse and three longitudinal limiting bosses, the characteristic width of each boss is equivalent to the characteristic width of the front slotting of the waveguide cavity rough machining structural member 1, the theoretical design clearance is 0.02mm, and the clamp is tightly matched with a waveguide cavity rough machining blank, so that the back thin-wall deep groove milling is facilitated; the inclined seam milling clamp consists of a milling inclined seam clamp bottom plate and a milling inclined seam clamp pressing plate, wherein the milling inclined seam clamp bottom plate is provided with an inclined seam limiting boss, the boss characteristic width is equivalent to the deep groove characteristic width at the back of the waveguide cavity finish machining part, the theoretical design clearance is 0.02mm, and the boss characteristic width is matched and tightly adhered to the deep groove of the waveguide cavity, so that the outer side surface of the thin-wall cavity and the inclined seam characteristic can be conveniently machined; the correction heat treatment shape-preserving clamp consists of a correction heat treatment shape-preserving clamp bottom plate and a correction heat treatment shape-preserving clamp pressing plate, wherein the shape-preserving clamp bottom plate is provided with three transverse and three longitudinal limit bosses and inclined seam profiling limit bosses, a theoretical design clearance is 0.02mm, and a unilateral slotting thin-wall waveguide cavity is positioned and compressed for size-stable heat treatment.
Furthermore, each fixture body is made of precipitation hardening stainless steel, and the solid solution aging heat treatment and the cold treatment at-45 ℃ are adopted, so that the strength and the dimensional stability of the fixture are improved.
Furthermore, positioning tenons and mortises are arranged at the two ends of the bottom plate and the pressing plate of each milling clamp, so that positioning and alignment are facilitated during processing.
Furthermore, the heat treatment conformal clamp is provided with an eccentric clamping mechanism, so that quick clamping and compaction are realized.
Compared with the prior art, the clamp combination for controlling the processing deformation of the unilateral slotting thin-wall waveguide cavity has the following advantages:
according to the structural characteristics of the parts, corresponding profiling limiting clamps are provided for deep groove milling, oblique joint milling and final heat treatment procedures, the rigidity of the asymmetric thin-wall cavity parts is improved, the processing deformation is restrained, and the processing efficiency and the product qualification rate are improved.
Drawings
1. FIG. 1 is a schematic diagram of a rough machining structure of a waveguide cavity of the present invention;
2. FIG. 2 is a schematic diagram of the waveguide cavity back deep groove clamping semi-finishing process of the present invention;
3. FIG. 3 is a schematic diagram of a waveguide cavity semi-finished structure of the present invention;
4. FIG. 4 is a schematic diagram of the front side oblique seam clamping finishing of the waveguide cavity of the present invention;
5. FIG. 5 is a schematic diagram of a waveguide cavity finish structure of the present invention;
6. FIG. 6 is a schematic illustration of a waveguide cavity size correction clamping heat treatment of the present invention;
7. FIG. 7 is a schematic diagram of a waveguide cavity cover plate of the present invention after welding;
8. fig. 8 is a physical diagram of a single-sided slotted thin-walled waveguide cavity of the present invention.
Reference numerals illustrate: 1. rough machining of structural parts of the waveguide cavity; 2. milling a deep groove clamp bottom plate; 3. milling a deep groove clamp pressing plate; 4. semi-finishing the structural part of the waveguide cavity; 5. milling a bottom plate of the oblique seam clamp; 6. milling an inclined seam clamp pressing plate; 7. finish machining a structural member of the waveguide cavity; 8. correcting a heat treatment conformal clamp bottom plate; 9. and correcting the heat treatment conformal clamp pressing plate.
Detailed Description
Specific embodiments of the present invention are described in detail below with reference to FIGS. 1-8.
A clamp combination for controlling machining deformation of a unilateral slotting thin-wall waveguide cavity comprises a back deep groove milling clamp, a front oblique seam milling clamp and a correction heat treatment shape preserving clamp. The back deep groove milling clamp consists of a deep groove milling clamp bottom plate 2 and a deep groove milling clamp pressing plate, wherein the deep groove milling clamp bottom plate is provided with three transverse and three longitudinal limiting bosses, the characteristic width of each boss is equal to the characteristic width of the front surface grooving of the rough machining structural member 1 of the waveguide cavity, the theoretical design clearance is 0.02mm, and the deep groove milling clamp is matched and tightly attached to the rough machining blank of the waveguide cavity, so that the back thin-wall deep groove milling is facilitated; the inclined seam milling clamp consists of a milling inclined seam clamp bottom plate 5 and a milling inclined seam clamp pressing plate 6, wherein the milling inclined seam clamp bottom plate is provided with an inclined seam limiting boss, the characteristic width of the boss is equal to the characteristic width of a deep groove on the back surface of the waveguide cavity finish machining structural member 7, the theoretical design clearance is 0.02mm, and the milling clamp is matched and tightly adhered with the deep groove of the waveguide cavity, so that the outer side surface of the thin-wall cavity and the inclined seam characteristic can be conveniently machined; the correction heat treatment shape-retaining clamp consists of a correction heat treatment shape-retaining clamp bottom plate 8 and a correction heat treatment shape-retaining clamp pressing plate 9, wherein the shape-retaining clamp bottom plate is provided with three transverse and three longitudinal limit bosses and a diagonal seam profiling limit boss, a theoretical design clearance is 0.02mm, and a unilateral slotting thin-wall waveguide cavity is positioned and pressed for size-stable heat treatment. Each fixture body is made of precipitation hardening stainless steel, and is subjected to solid solution aging heat treatment and cold treatment at-45 ℃ so as to improve the strength and dimensional stability of the fixture. Positioning tenons and mortises are arranged at the two ends of the bottom plate and the pressing plate of each milling clamp, so that positioning and alignment are facilitated during processing; the heat treatment conformal clamp is provided with an eccentric clamping mechanism, so that quick clamping and compaction are realized.
Referring to fig. 1, the machining object of the invention is a unilateral slotting thin-wall waveguide cavity, a 3A21 aluminum alloy plate is adopted to obtain a waveguide cavity rough machining structural member 1 according to a design drawing, a finish machining allowance and a surrounding clamping process allowance are reserved, and stress relief annealing is carried out according to the process parameters of air cooling at 260 ℃ for 2 hours.
Referring to fig. 2, the rough machining structural member 1 of the waveguide cavity, the bottom plate 2 of the clamp for milling the deep groove and the pressing plate 3 are clamped. And the tenon and mortise structure is positioned, the boss characteristic width of the clamp bottom plate 2 is equivalent to the front grooving characteristic width of the waveguide cavity, the theoretical design clearance is 0.02mm, the matching and the adhesion are ensured, and the back thin-wall deep groove milling is convenient. The pressing plate is firmly pressed on the working table surface of the high-speed milling center, and deep groove machining forming is carried out on the back surface of the waveguide cavity structure according to the technological parameters of 10000r/min of rotation speed and 0.02mm of chip depth, so that the waveguide cavity semi-finished structural member 4 shown in fig. 3 is obtained.
Referring to fig. 4, the waveguide cavity semi-finished structural member 4, the milling oblique seam clamp base plate 5 and the pressing plate 6 are clamped. And the tenon and mortise structure are positioned, the boss characteristic width of the milling oblique seam clamp bottom plate 5 is equivalent to the deep groove characteristic width of the back surface of the waveguide cavity, and the theoretical design clearance is 0.02mm, so that the matching and the adhesion are ensured. The pressing plate is firmly pressed on the workbench surface of the high-speed milling center, and the front allowance and the slot finish machining of the waveguide thin-wall cavity are carried out according to the technological parameters of 10000r/min of rotation speed, 20m/min of feeding amount and 0.02mm of chip depth, so that the waveguide cavity finish machining structural member 7 shown in fig. 7 is obtained.
Referring to fig. 6, the waveguide cavity finish machining structural member 7 is assembled with the correction heat treatment clamp base plate 8 and the pressing plate 9, the clamp base plate 8 is provided with a deep groove and a diagonal seam profiling limiting boss, a theoretical design clearance is 0.02mm, the unilateral slotting thin-wall waveguide cavity is positioned and pressed, and the eccentric wheel clamping mechanism is clamped. The whole is placed in an oven, the temperature is kept for 4 hours at 100 ℃, and the whole is cooled along with the oven, so that the residual stress is fully released, and the deformation is restrained.
Referring to fig. 7, the unilateral slotted waveguide cavity 7 and the cover plate are welded by a vacuum brazing technology, after the molding, the slow wire is cut by adopting a wire cutting process to remove the reinforcing rib surrounding frame, so that a final sample is obtained, and the precision is ensured.
Further, in the clamp combination for controlling the machining deformation of the unilateral slotting thin-wall waveguide cavity, each clamp body is made of precipitation hardening stainless steel, and the solid solution aging heat treatment and the cold treatment at-45 ℃ are adopted, so that the strength and the dimensional stability of the clamp are improved.
Referring to fig. 8, the fixture for controlling the processing deformation of the unilateral slotting thin-wall waveguide cavity is successfully applied to the manufacturing of a sample, realizes batch production and meets the precision of +/-0.02 mm.
The clamp combination for controlling the machining deformation of the unilateral slotting thin-wall waveguide cavity provides a corresponding profiling limit clamp for deep groove milling, oblique slotting and final heat treatment according to the structural characteristics of parts, improves the rigidity of the asymmetric thin-wall cavity parts, inhibits the machining deformation, and improves the machining efficiency and the product qualification rate.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (2)
1. The clamp assembly comprises a back deep groove milling clamp, a front oblique seam milling clamp and a correction heat treatment shape preserving clamp, wherein the back deep groove milling clamp consists of a deep groove milling clamp bottom plate and a deep groove milling clamp pressing plate, and the deep groove milling clamp bottom plate is provided with three transverse and three longitudinal limiting bosses which are matched and tightly attached with a rough machining blank of the waveguide cavity; the inclined seam milling clamp consists of a milling inclined seam clamp bottom plate and a milling inclined seam clamp pressing plate, wherein the milling inclined seam clamp bottom plate is provided with an inclined seam limiting boss which is matched and tightly attached to the deep groove of the waveguide cavity; the correction heat treatment shape-retaining clamp consists of a correction heat treatment shape-retaining clamp base plate and a correction heat treatment shape-retaining clamp pressing plate, wherein the shape-retaining clamp base plate is provided with three transverse and three longitudinal limit bosses and inclined seam profiling limit bosses, a unilateral slotting thin-wall waveguide cavity is positioned and pressed for dimensional stability heat treatment, each clamp body is made of precipitation hardening stainless steel, solid solution aging heat treatment and-45 ℃ cold treatment are carried out, and the heat treatment shape-retaining clamp is provided with an eccentric clamping mechanism.
2. The fixture assembly for controlling machining deformation of a unilaterally slotted thin-walled waveguide cavity according to claim 1, wherein the fixture assembly comprises: positioning tenons and mortises are arranged at two ends of the bottom plate and the pressing plate of each milling clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111583374.7A CN114346717B (en) | 2021-12-22 | 2021-12-22 | Clamp combination for controlling machining deformation of unilateral slotting thin-wall waveguide cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111583374.7A CN114346717B (en) | 2021-12-22 | 2021-12-22 | Clamp combination for controlling machining deformation of unilateral slotting thin-wall waveguide cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114346717A CN114346717A (en) | 2022-04-15 |
| CN114346717B true CN114346717B (en) | 2024-02-27 |
Family
ID=81100804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111583374.7A Active CN114346717B (en) | 2021-12-22 | 2021-12-22 | Clamp combination for controlling machining deformation of unilateral slotting thin-wall waveguide cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114346717B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323291A (en) * | 2022-06-29 | 2022-11-11 | 西安航天精密机电研究所 | Low-temperature storage heat treatment method for aluminum alloy castings |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006009180A1 (en) * | 2004-07-23 | 2006-01-26 | Dai Nippon Printing Co., Ltd. | Method and device for mounting thin metal plate on frame |
| CN101670462A (en) * | 2009-09-29 | 2010-03-17 | 江西洪都航空工业集团有限责任公司 | Wall plate processing technology for hyperboloid thin wall |
| CN104384825A (en) * | 2014-08-01 | 2015-03-04 | 中国人民解放军第五七一九工厂 | Machining deformation control method of bushing thin-wall part |
| CN105033566A (en) * | 2015-09-09 | 2015-11-11 | 南京春睿精密机械有限公司 | Thin-wall thin-bottom product machining method suitable for numerical control machine tool |
| CN107932137A (en) * | 2017-12-04 | 2018-04-20 | 广东长盈精密技术有限公司 | The fixing method of lumen type thin-wall part processing |
| CN207840730U (en) * | 2017-12-13 | 2018-09-11 | 北京华航无线电测量研究所 | A kind of fine gap thin-slab structure positioning fixture of high density for Milling Process |
| CN213470291U (en) * | 2020-06-23 | 2021-06-18 | 苏州市昌星模具机械有限公司 | Thin-wall aluminum profile frame clamping assembly based on semi-automatic clamping and aligning technology |
| CN213977777U (en) * | 2020-11-09 | 2021-08-17 | 飞而康快速制造科技有限责任公司 | Accuse anchor clamps |
| CN113798351A (en) * | 2021-10-08 | 2021-12-17 | 内蒙古北方重工业集团有限公司 | Thermal correction method for large-scale frame thin-wall parts |
| CN115805417A (en) * | 2022-12-28 | 2023-03-17 | 成都航新航空装备科技有限公司 | Machining method for thin-wall parts of aluminum alloy middle frame |
-
2021
- 2021-12-22 CN CN202111583374.7A patent/CN114346717B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006009180A1 (en) * | 2004-07-23 | 2006-01-26 | Dai Nippon Printing Co., Ltd. | Method and device for mounting thin metal plate on frame |
| CN101670462A (en) * | 2009-09-29 | 2010-03-17 | 江西洪都航空工业集团有限责任公司 | Wall plate processing technology for hyperboloid thin wall |
| CN104384825A (en) * | 2014-08-01 | 2015-03-04 | 中国人民解放军第五七一九工厂 | Machining deformation control method of bushing thin-wall part |
| CN105033566A (en) * | 2015-09-09 | 2015-11-11 | 南京春睿精密机械有限公司 | Thin-wall thin-bottom product machining method suitable for numerical control machine tool |
| CN107932137A (en) * | 2017-12-04 | 2018-04-20 | 广东长盈精密技术有限公司 | The fixing method of lumen type thin-wall part processing |
| CN207840730U (en) * | 2017-12-13 | 2018-09-11 | 北京华航无线电测量研究所 | A kind of fine gap thin-slab structure positioning fixture of high density for Milling Process |
| CN213470291U (en) * | 2020-06-23 | 2021-06-18 | 苏州市昌星模具机械有限公司 | Thin-wall aluminum profile frame clamping assembly based on semi-automatic clamping and aligning technology |
| CN213977777U (en) * | 2020-11-09 | 2021-08-17 | 飞而康快速制造科技有限责任公司 | Accuse anchor clamps |
| CN113798351A (en) * | 2021-10-08 | 2021-12-17 | 内蒙古北方重工业集团有限公司 | Thermal correction method for large-scale frame thin-wall parts |
| CN115805417A (en) * | 2022-12-28 | 2023-03-17 | 成都航新航空装备科技有限公司 | Machining method for thin-wall parts of aluminum alloy middle frame |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114346717A (en) | 2022-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7650773B2 (en) | Method for manufacturing an edge protector and die assemblies therefor | |
| CN114346717B (en) | Clamp combination for controlling machining deformation of unilateral slotting thin-wall waveguide cavity | |
| CN102319989B (en) | Manufacturing method of airplane horizontal tail beam edge strip | |
| CN105382313A (en) | Machining method for numerical control milling of thin-wall curved-surface irregular parts | |
| CN201645193U (en) | Combined three-shaft adjustable milling machine universal fixture | |
| CN104755213B (en) | Method for plane machining workpiece surface | |
| CN106694906A (en) | Machining method of large-diameter thin-wall furcated ring | |
| CN106514152A (en) | Processing method and device for thin-wall multi-rib titanium alloy parts | |
| CN103978105B (en) | A kind of method for processing and assembling of covering die | |
| EP1462190A1 (en) | Method and apparatus for incremental forming | |
| CN105855820A (en) | Rapid manufacturing method of frame mold | |
| CN104289861A (en) | Long rod piece machining method and auxiliary tool for long rod piece machining | |
| CN110997190B (en) | Method for producing a sintered component and sintered component | |
| CN114986107B (en) | Manufacturing method of camshaft retainer and camshaft retainer | |
| US9919457B2 (en) | Method for producing preforms | |
| CN109128732A (en) | A kind of processing method of glass mold | |
| CN115488585A (en) | Method and device for manufacturing top first-wall graphite mounting plate | |
| CN103639646A (en) | Machining technique for longitudinal seam bevel of punching-welding axle housing | |
| CN110666449B (en) | Machining method for aluminum alloy virtual reference part | |
| CN110153650B (en) | Method for processing saddle groove blade seat of large axial flow compressor | |
| CN105013949A (en) | Two-lower punching die and manufacturing method thereof | |
| CN204892708U (en) | Two times dies | |
| CN104625175A (en) | Processing method for glass fibre reinforced plastic bend mould | |
| CN216464039U (en) | Grinding wheel for grinding crankshaft | |
| CN108655883B (en) | Processing machine tool of vernier caliper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |