CN114774666A - Heat treatment deformation control clamp and control method for sheet type assembly with studs - Google Patents
Heat treatment deformation control clamp and control method for sheet type assembly with studs Download PDFInfo
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- CN114774666A CN114774666A CN202210404381.4A CN202210404381A CN114774666A CN 114774666 A CN114774666 A CN 114774666A CN 202210404381 A CN202210404381 A CN 202210404381A CN 114774666 A CN114774666 A CN 114774666A
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- plate
- bottom plate
- assembly
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The heat treatment control fixture comprises a fixture body, a base plate and a compression structure, wherein the fixture body is a supporting structure matched with the thin plate type component, the middle part of the fixture body is a supporting flat plate, the supporting plane is matched with the concave part of the bottom plate of the thin plate type component main body, the peripheral flat plate of the fixture body surrounds the supporting flat plate in the middle part, the surface of the peripheral flat plate and the surface of the supporting flat plate in the middle part are provided with step differences, the base plate is connected with the peripheral flat plate on one side of the fixture body in a matching manner, the compression structure comprises a plurality of pressure plate components, pressure strip components and pressure blocks, the pressure plate components are uniformly compressed on the transverse side edges of the component bottom plate, the pressure strip components are compressed on the longitudinal side edges of the component bottom plate, and the pressure blocks are placed on the upper surface of the bottom plate between rib plates of the component main body.
Description
Technical Field
The application relates to an airplane manufacturing technology, and further relates to a heat treatment deformation control clamp and a heat treatment deformation control method for a criss-cross welding type sheet assembly with studs.
Background
With the rapid development of modern aircraft transportation and aircraft manufacturing, titanium alloy is widely used in key parts of aircraft due to its excellent characteristics in terms of high specific strength, high temperature resistance, corrosion resistance, etc. Titanium and titanium alloy are commonly used for special load parts with large bearing capacity and high temperature, such as fuselages, undercarriages and the like of airplanes. Because of the relatively low material density, the aluminum alloy and the structural steel are gradually replaced to become the main bearing structural material of the airplane and also become one of the main lightweight materials of the airplane structural member. However, the titanium alloy components of the aircraft have the characteristics and disadvantages of large structural size, thin wall, complex structure, high requirement on coordination precision, poor rigidity capability, more materials to be machined and removed, and the like, and usually present a combination state of various deformations in the machining process, so that the machining precision of parts is reduced, and even the parts are scrapped.
The criss-cross welding type thin plate assembly with the studs designed by a certain type of airplane has large stress generated during welding, and a part machining piece in the assembly needs to remove more materials in the machining process, so certain initial deformation and large machining stress can be generated inevitably. The stress relief annealing heat treatment is required to eliminate the stress generated in the machining and welding processes, however, the machining initial residual stress of the part and the thermal stress generated in the heat treatment process bring new heat treatment deformation in the heat treatment process. Therefore, when the thin plate type assembly is subjected to heat treatment, a reasonable and reliable heat treatment tool needs to be designed to control the heat treatment deformation of the airplane assembly.
The criss-cross welded thin plate type component with the studs designed for an airplane of a certain type mainly has the characteristics of thin wall, large quantity, high strength, different sunken bottom plates and the like. The whole length 990mm, width 990mm, height 43mm of subassembly are formed by welding square bottom plate, horizontal gusset and vertical gusset, and the material is TC 4. The square thin plates of the assembly are used as bottom plates, the thicknesses of the bottom plates are different, namely 1mm is provided, and 3mm is provided; the depressions below the bottom plate are different and have various specifications such as 0.5mm, 1.2mm, 2mm and the like. The flatness requirement of the bottom plate is extremely high. 3 longitudinal rib plates and 12 transverse rib plates are uniformly welded above the bottom plate, and the longitudinal rib plates penetrate through the left side and the right side of the bottom plate; the transverse rib plates are sequentially distributed in the front and the back of the bottom plate. The similar components are corrected in welding deformation through a set of heat treatment deformation control tools and deformation of the similar components during heat treatment is controlled.
Disclosure of Invention
The method aims to meet the requirements of designing and manufacturing heat treatment shape-keeping tools for thin-wall titanium alloy welding components with different specifications in the development of key airplane models and the problems in the prior art. The application aims to provide a criss-cross welding type thin plate assembly heat treatment deformation control clamp with studs and a control method.
A thin plate type assembly heat treatment deformation control clamp with studs is characterized in that the heat treatment control clamp comprises a clamp body, a backing plate and a compression structure, the clamp body is a supporting structure matched with the thin plate type assembly, the middle part of the clamp body is a supporting flat plate, the supporting flat plate is matched with the bottom plate recess of a thin plate type assembly main body, the peripheral flat plate of the clamp body surrounds the supporting flat plate at the middle part, a step difference exists between the surface of the peripheral flat plate and the surface of the supporting flat plate at the middle part, the backing plate is matched and connected with the peripheral flat plate at one side of the clamp body, the upper surface of the backing plate is matched with the surface of the bottom plane of the assembly bottom plate, the compression structure comprises a plurality of pressing plate assemblies, pressing strip assemblies and pressing blocks, the pressing plate assembly is uniformly pressed on the transverse side edge of the assembly bottom plate, the pressing strip assembly is pressed on the longitudinal side edge of the assembly bottom plate, and the pressing block is placed on the upper surface of the bottom plate between the rib plates of the assembly main body.
The fixture body is of a frame type structure formed by welding a plurality of criss-cross supporting beams, the middle part of the frame type structure is connected with the supporting flat plate, the upper plane of the supporting flat plate is matched with the concave part of the component bottom plate, the periphery of the frame type structure is used for supporting the peripheral flat plate, the peripheral flat plate and the supporting flat plate have a height difference, the height difference is matched with the thickness of the cushion plate, and the height difference between the upper surface of the cushion plate and the upper surface of the supporting flat plate is the depth value of the concave part of the component bottom plate.
Lightening holes are uniformly distributed in the middle of the support flat plate and the support beam, and lightening holes and connecting holes for connecting the pressing components are distributed on the peripheral flat plate.
The utility model provides a take stud sheet metal class subassembly thermal treatment deformation control method, sheet metal class subassembly, contain square bottom plate, there is the step form sunken in the lower surface middle part of bottom plate, the upper surface welding of bottom plate has vertically and horizontally staggered's stud, its characterized in that contains following content: 1) the deformation control clamp for the heat treatment of the sheet assembly with the studs is used; 2) before heat treatment, the thin plate type component is arranged on the fixture body, so that a bottom plate of the thin plate type component main body is sunken and attached to a support flat plate in the middle of the fixture body, and the peripheral plane of the component bottom plate is attached to the upper surface of the backing plate; 3) firstly, a pressing block is placed on the upper plane of the middle part of the bottom plate between the ribbed plates of the thin plate type assembly, then the transverse periphery of the bottom plate of the assembly is pressed tightly by the pressing plate assembly, and the longitudinal periphery of the bottom plate of the assembly is pressed tightly by the pressing strip assembly, so that the bottom plate of the assembly is fixed and pressed tightly on the clamp body; 4) then placing the integrally fixed sheet assembly and the deformation control clamp into a heat treatment furnace for heat treatment; 5) and cooling the heat-treated sheet assembly and the deformation control fixture to a normal temperature state, and then removing the deformation control fixture.
The beneficial effect of this application lies in: the fixture has strong universality, and can be used for heat treatment deformation control of different concave assemblies of the same type of sheet by switching different cushion block thicknesses; the design of the pressing block between the rib plates breaks the fixation of the pressing of the former pressing plate assembly, so that the pressing part is more random, the uncertainty of welding deformation can be flexibly dealt with, and the welding deformation can be better corrected; similar sheet metal class subassembly sharing one set of frock, practice thrift the cost, improve the availability factor.
The present application is described in further detail below with reference to the accompanying drawings of embodiments.
Drawings
FIG. 1 is a schematic view of a criss-cross welded thin plate assembly with studs.
FIG. 2 is a schematic view of a bottom plate recess structure of a thin plate assembly
FIG. 3 is a schematic view of a heat treatment control jig for a sheet assembly.
Fig. 4 is a structural schematic diagram of a middle supporting surface of a clamp body of the control clamp.
The numbering in the figures illustrates: the structure comprises a base plate 1, a transverse rib plate 2, a longitudinal rib plate 3, a recess 4, a support plate 5, a peripheral plate 6, a support beam 7, a lightening hole 8, a layering assembly 9, a pressing plate assembly 10, a pressing block 11 and a base plate 12.
Detailed Description
Referring to the attached drawings, fig. 1 shows a crisscross welding type thin plate assembly with studs in aircraft manufacturing, the main body of the thin plate assembly is a crisscross welding structure composed of a bottom plate 1, transverse rib plates 2 and longitudinal rib plates 3, a recess 4 is arranged below the bottom plate 1, and the bottom plate 1 deforms after being welded. When the stress relief annealing is carried out after the welding of the sheet type assembly, the deformation surface to be controlled comprises the upper surface and the lower surface of the bottom plate 1 and the sunken surface, and the three surfaces are totally arranged, and the flatness requirement of the bottom plate 1 is extremely high. The control fixture is used for controlling the deformation of the component during heat treatment and correcting the deformation of the component after welding. Therefore, the control clamp provided by the application comprises a clamp body, a base plate and a pressing structure as shown in fig. 3, wherein the clamp body is a supporting structure matched with a thin plate type component, the middle part of the clamp body is a supporting flat plate 5, the upper plane of the supporting flat plate 5 is matched with the bottom plate recess 4 of a thin plate type component main body, peripheral flat plates 6 are arranged on the periphery of the clamp body, the upper plane of the peripheral flat plates 6 has a step difference with the lower surface of the middle supporting flat plate 5 and is used for placing the base plate 12, and the upper surface of the base plate 12 is matched with the lower surface of the bottom plate 1 of the component main body. The compaction structure comprises a plurality of pressing strip assemblies 9, a pressing plate assembly 10 and a pressing block 11. The pressing strip assembly 9 is tightly pressed on the longitudinal side edge of the assembly bottom plate 1, the pressing plate assembly 10 is uniformly tightly pressed on the transverse side edge of the assembly bottom plate 1, and the pressing block 11 is placed on the upper surface of the bottom plate 1 between the rib plates of the assembly main body. The pressing strip assembly 9 and the pressing plate assembly 10 are both connected to the peripheral flat plate 6 of the fixture body.
In order to reduce the overall weight of the control clamp and improve the stability of the control clamp, the main body of the clamp body is of a frame structure formed by welding a plurality of criss-cross supporting beams 7, the cross section of the frame structure formed by the supporting beams 7 is of a stepped structure with two low ends and a high middle part, the supporting flat plate 5 is borne at the high middle part, the peripheral flat plate 6 is borne at the low two ends, a backing plate 12 is arranged on the peripheral flat plate 6, the height difference between the upper plane of the backing plate 12 and the upper plane of the supporting flat plate 5 at the middle part of the clamp body is the depth value of a concave surface 4, and the purpose of processing different concave components of the same sheet product by the same set of tool is realized by adjusting the thickness of the backing plate 12. Lightening holes 8 are uniformly distributed in the middle of the support flat plate 5 and the support beam 7. Lightening holes 8 and connecting holes of each pressing component are distributed on the peripheral flat plate 6.
Before the airplane sheet type component is subjected to heat treatment, the airplane sheet type component is placed on the clamp body by using the deformation control clamp for the heat treatment of the airplane sheet type component, so that the bottom plate depression 4 of the main body of the sheet type component is attached to the supporting flat plate 5 in the middle of the clamp body, and the bottom plane of the bottom plate 1 of the sheet type component is attached to the upper surface of the backing plate 12; a pressing block 11 is placed on the upper plane of the middle part of the bottom plate 1 between the component rib plates, so that the middle plane of the bottom plate 1 of the thin plate type component is attached and pressed with the supporting flat plate 5 of the fixture body; the transverse side edge of the assembly bottom plate 1 is pressed by a pressing plate assembly 10, so that the thin plate type assembly is transversely attached and fixed with the peripheral flat plate 6 of the fixture body; the longitudinal side edge of the assembly bottom plate 1 is pressed by a pressing strip assembly 9, so that the thin plate type assembly is longitudinally attached and fixed with the peripheral flat plate 6 of the fixture body; then placing the integrally fixed airplane sheet assembly and the deformation control clamp in a heat treatment furnace together for heat treatment; and finally, cooling the aircraft sheet assembly subjected to annealing heat treatment and the deformation control fixture to a normal temperature state, and then removing the deformation control fixture.
Claims (4)
1. The utility model provides a take stud sheet metal class subassembly thermal treatment deformation control anchor clamps, sheet metal class subassembly, contain square bottom plate, there is the step form in the middle part of the lower surface of bottom plate sunken, the last skin weld of bottom plate has vertically and horizontally staggered's stud, a serial communication port, thermal treatment control anchor clamps contain the anchor clamps body, backing plate and compact structure, the anchor clamps body be a bearing structure who matches with sheet metal class subassembly, the middle part of the anchor clamps body is for supporting flat plate, this bearing surface matches with the bottom plate depressed part of sheet metal class subassembly main part, the support flat plate at middle part is encircleed around to the peripheral flat plate of the anchor clamps body, there is the step difference between the surface of peripheral flat plate surface and the middle part support flat plate, backing plate and the peripheral dull and stereotyped accordant connection in one side of the anchor clamps body, the backing plate upper surface matches with the bottom plane surface of subassembly bottom plate, compact structure contain a plurality of clamp plate subassemblies, The pressing strip assembly is uniformly pressed on the transverse side edge of the assembly bottom plate, the pressing strip assembly is pressed on the longitudinal side edge of the assembly bottom plate, and the pressing block is placed on the upper surface of the bottom plate between the rib plates of the assembly main body.
2. The jig for controlling deformation of sheet metal components with studs as claimed in claim 1, wherein the jig body has a frame structure formed by welding a plurality of criss-cross support beams, the frame structure having a central portion for receiving the support plate, the support plate having an upper surface adapted to the recess of the bottom plate of the component, the frame structure having a peripheral edge for supporting the peripheral plate, the peripheral edge having a height difference from the support plate, the height difference being adapted to the thickness of the backing plate, the height difference between the upper surface of the backing plate and the upper surface of the support plate being the depth of the recess of the bottom plate of the component.
3. The jig for controlling deformation of sheet assemblies with studs as claimed in claim 1, wherein lightening holes are uniformly distributed in the middle of the support plate and the support beam, and lightening holes and connecting holes for connecting the hold-down assembly are distributed in the peripheral plate.
4. The utility model provides a take stud sheet metal class subassembly thermal treatment deformation control method, sheet metal class subassembly, contain square bottom plate, the lower surface middle part of bottom plate has the step form sunken, the upper surface welding of bottom plate has vertically and horizontally staggered's stud, its characterized in that contains following content: 1) using the ribbed sheet-like assembly heat treatment deformation control fixture of claim 1, 2 or 3; 2) before heat treatment, the thin plate type assembly is placed on the fixture body, a bottom plate of the thin plate type assembly main body is attached to a support flat plate in the middle of the fixture body in a concave mode, and the peripheral plane of the assembly bottom plate is attached to the upper surface of the backing plate; 3) firstly, a pressing block is placed on the upper plane of the middle part of the bottom plate between the ribbed plates of the thin plate type assembly, then the transverse periphery of the bottom plate of the assembly is pressed tightly by the pressing plate assembly, and the longitudinal periphery of the bottom plate of the assembly is pressed tightly by the pressing strip assembly, so that the bottom plate of the assembly is fixed and pressed tightly on the clamp body; 4) then placing the integrally fixed sheet assembly and the deformation control clamp into a heat treatment furnace for heat treatment; 5) and cooling the heat-treated sheet assembly and the deformation control fixture to a normal temperature state, and then removing the deformation control fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210404381.4A CN114774666A (en) | 2022-04-18 | 2022-04-18 | Heat treatment deformation control clamp and control method for sheet type assembly with studs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210404381.4A CN114774666A (en) | 2022-04-18 | 2022-04-18 | Heat treatment deformation control clamp and control method for sheet type assembly with studs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114774666A true CN114774666A (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210404381.4A Pending CN114774666A (en) | 2022-04-18 | 2022-04-18 | Heat treatment deformation control clamp and control method for sheet type assembly with studs |
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| Country | Link |
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| CN (1) | CN114774666A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202317519U (en) * | 2011-11-05 | 2012-07-11 | 合肥海源机械有限公司 | Rib plate and fitting seat installing and welding tool for forklift steering bridge |
| CN107254570A (en) * | 2017-06-14 | 2017-10-17 | 沈阳航空航天大学 | Modularization fixture and its application method for sensing heating local heat treatmet |
| CN206614144U (en) * | 2017-04-01 | 2017-11-07 | 马鞍山南实科技有限公司 | Plate-shaped workpiece agitating friction welding clamp |
-
2022
- 2022-04-18 CN CN202210404381.4A patent/CN114774666A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202317519U (en) * | 2011-11-05 | 2012-07-11 | 合肥海源机械有限公司 | Rib plate and fitting seat installing and welding tool for forklift steering bridge |
| CN206614144U (en) * | 2017-04-01 | 2017-11-07 | 马鞍山南实科技有限公司 | Plate-shaped workpiece agitating friction welding clamp |
| CN107254570A (en) * | 2017-06-14 | 2017-10-17 | 沈阳航空航天大学 | Modularization fixture and its application method for sensing heating local heat treatmet |
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