CN212655837U

CN212655837U - TA15 titanium alloy middle and lower beam part stress relief annealing clamp

Info

Publication number: CN212655837U
Application number: CN201922157126.0U
Authority: CN
Inventors: 漆诚; 彭亮亮; 梅海燕; 周航; 吴宁; 汪蕾; 胡建冬; 王云飞
Original assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Current assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2021-03-05
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a underbeam part destressing annealing anchor clamps in TA15 titanium alloy, including lower plate, upper cover plate and a plurality of stand structure, the lower plate is "

The shape of the structure comprises a bottom plate main body and a bottom plate end part which are mutually vertical, wherein a plurality of upright post structures crossing the width of the bottom plate main body are arranged on the bottom plate main body along the length direction of the bottom plate main bodyThe bottom plate is provided with a bottom plate, the bottom plate is provided with a middle lower beam part, and the upper cover plate is pressed above the middle lower beam part through the bottom plate. The utility model discloses an anchor clamps through fixing well underbeam part in anchor clamps, make part and anchor clamps become a whole, effectively prevent the part at vertical and horizontal direction production deformation when eliminating the machine and adding the internal stress that the in-process produced, avoid the part to produce and surpass the deflection that the technology allowed and lead to assembling, the condition of scrapping the part.

Description

TA15 titanium alloy middle and lower beam part stress relief annealing clamp

Technical Field

The utility model relates to a machine parts machining technical field specifically is a lower beam part destressing annealing anchor clamps in TA15 titanium alloy.

Background

In the development of a new type of airplane project, titanium alloy is widely used. The middle and lower beam part (figure 1) of the rear fuselage of the airplane type is a large-size integral TA15 titanium alloy beam part. The design structure of this well underbeam is comparatively complicated, and the size is great, and is about 2050mm long, and about 390mm wide, and thickness is about 110mm, and minimum wall thickness is about 2mm, and most wall thickness is about 3mm, and the biggest groove depth of roof beam left side tip is about 250mm, belongs to typical deep cavity, slender beams class part, and the tail end of part is equipped with part location filling block. And the single-sided reinforcing ribs are more in the final state of part processing, the part sinks deeply, the mechanical processing process of the part is complex, larger internal stress is easily generated in the machining process, and the external dimension and the mechanical property of the part are greatly influenced if the internal stress is not eliminated in time. In the manufacturing process, multiple stress relief annealing is needed to eliminate mechanical stress, so that final stress concentration is avoided, hidden troubles of part deformation, cracks and breakage are eliminated, and the yield limit is recovered.

However, in the early test process, the middle and lower beams are placed in a vacuum heat treatment furnace in a free state for stress relief annealing without using a clamp for fixing and protecting, so that the part is deformed greatly when being discharged from the furnace, the maximum deformation reaches 7mm, the deformation exceeds the process allowable range, the part cannot be fit in the assembly process, the assembly fails, and the part is scrapped.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a underbeam part destressing annealing anchor clamps in TA15 titanium alloy through fixing the underbeam part in anchor clamps, makes part and anchor clamps become a whole, effectively prevents the part and produces deformation in vertical and horizontal direction when eliminating the internal stress that the machine adds the in-process and produce, avoids the part to produce and surpasss the deflection that the technology allowed and lead to assembling, the condition of scrapping the part.

The utility model adopts the technical proposal that:

a TA15 titanium alloy middle and lower beam part stress-relief annealing clamp comprises a lower bottom plate, an upper cover plate and a plurality of upright post structures, wherein the lower bottom plate is "

The bottom plate main body is provided with a plurality of upright post structures crossing the width of the bottom plate main body along the length direction of the bottom plate main body, the end part of the bottom plate is also provided with an upright post structure crossing the width of the bottom plate main body, the lower middle beam part is arranged on the lower bottom plate, and the upper cover plate is pressed above the lower middle beam part through the upright post structures.

Furthermore, the upright column structure comprises a high support column, a low support column and a wedge block, through holes matched with the cross section of the wedge block are vertically formed in the high support column and the low support column, two ends of the wedge block are inserted into the through holes, the inclined surface of the wedge block inclines from the high support column to the low support column, and the high support column and the low support column are fixed on two sides of the lower bottom plate through nuts and stepped screws.

Furthermore, two lifting ring screws are respectively installed on two sides of the bottom plate main body, and two lifting ring screws are also installed on the upper surface of the upper cover plate.

Furthermore, a positioning stop block is arranged at the position where the upright post structure is arranged at the end part of the bottom plate, and an internal thread cylindrical pin is arranged at the tail end of the bottom plate main body.

Further, the shape of the upper cover plate is similar to that of the lower base plate.

Further, the annealing fixture is made of high-temperature-resistant 2520 stainless steel.

The utility model has the advantages that:

1. the utility model discloses an anchor clamps through fixing well underbeam part in anchor clamps, make part and anchor clamps become a whole, effectively prevent the part at vertical and horizontal direction production deformation when eliminating the machine and adding the internal stress that the in-process produced, avoid the part to produce and surpass the deflection that the technology allowed and lead to assembling, the condition of scrapping the part.

2. The utility model discloses an anchor clamps, it is easy and simple to handle, easily workman's operation has ensured well underbeam part size in the within range that assembly tolerance allows after the annealing of destressing to successful assembly has solved the production bottleneck of certain model aircraft.

Drawings

FIG. 1 is a schematic structural view of a middle and lower beam part of the present invention;

FIG. 2 is a front view of the annealing fixture of the present invention;

fig. 3 is a top view of the annealing fixture of the present invention;

FIG. 4 is a diagram of the usage state of the annealing fixture of the present invention;

FIG. 5 is a schematic structural view of FIG. 4 with the upper cover plate removed;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is an assembly view of the lower plate and the pillar structure of the present invention;

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a schematic view of the lower bottom plate structure of the annealing fixture of the present invention;

FIG. 10 is a schematic view of the structure of the upper cover plate of the annealing fixture of the present invention;

fig. 11 is a schematic view of the column structure of the annealing fixture of the present invention.

Detailed Description

In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.

As shown in fig. 1 to 11, a TA15 titanium alloy middle and lower beam part stress-relief annealing fixture is made of 2520 stainless steel with high temperature resistance. The clamp comprises a lower bottom plate 1, an upper cover plate 2 and a plurality of upright post structures 3, wherein the lower bottom plate is "

"shape (the shape of upper cover plate is similar with the shape of bottom plate)," shape (the shape of upper cover plate is similar with the bottom plate) "including mutually perpendicular's bottom plate main part 11 and bottom plate tip 12, be equipped with a plurality of stand structures that span its width on the bottom plate main part 11 along its length direction, also be equipped with the stand structure that spans its width on the bottom plate tip 12, place well underbeam part 4 on the underbeam (the tail end of part is equipped with part location filling block 41, is equipped with the pinhole on the part location filling block 41), upper cover plate 2 compresses tightly in well underbeam part 4 top through stand structure 3. A positioning stop block 5 is arranged at the position of the end part 12 of the bottom plate for mounting the upright post structure, and a cylindrical pin hole 6 is arranged at the tail end of the main body 11 of the bottom plate.

The upright column structure 3 comprises a high support column 31, a low support column 32 and a wedge 33, wherein through holes 34 matched with the cross sections of the wedge are vertically arranged on the high support column 31 and the low support column 32, two ends of the wedge 33 are inserted into the through holes 34, the inclined surface of the wedge 33 inclines from the high support column 31 to the low support column 32, and the high support column 31 and the low support column 32 are fixed on two sides of the lower bottom plate 1 through nuts and stepped screws 7.

Two lifting ring screws 8 are respectively arranged on two sides of the bottom plate main body 11, and two lifting ring screws 8 are also arranged on the upper surface of the upper cover plate 2. The hanging of the parts entering the furnace and exiting the furnace is convenient.

The clamp mounting method comprises the following steps: firstly, the lower base plate with proper size and weight is about 2150mm multiplied by 540mm multiplied by 40mm, the upper cover plate with proper size and weight is about 2100 mm multiplied by 500mm multiplied by 40mm, and six groups of upright column structures are arranged on two sides of the base plate main body of the lower base plate and the end part of the base plate. The part is placed on the lower base plate, the part is located by the locating pin, the upper cover plate is installed after the stop block at the head end and the locating pin at the tail end are located, then five machined wedge blocks with the length of about 260mm are inserted into the stand column structure formed by the high-low support columns and tightly press the upper cover plate, the locating pin is inserted, and the clamp is installed completely. And finally, taking out the positioning pin at the tail end of the fixture tool before the stress relief annealing heat treatment.

The use method of the clamp comprises the following steps: when the clamp is used for the first time, before heat treatment, the surface of the whole clamp is blown with sand or cleaned, and then the whole clamp is placed into a vacuum furnace to carry out degassing treatment at the temperature which is about 100 ℃ higher than the temperature of stress-relief annealing heat treatment of parts. And taking out the workpiece from the furnace, cooling, disassembling the workpiece, clamping the workpiece, and then putting the workpiece into the furnace again for stress relief annealing. And after the heat treatment is finished, the wedge blocks are detached, the upper cover plate is taken down, the part is taken out, and the part positioning patch 41 is cut off when the part is used. The part clamped by the clamp enters the vacuum furnace for stress relief annealing, so that the part can be effectively prevented from deforming, and the requirements of related technical parameters are met.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The TA15 titanium alloy middle and lower beam part stress-relief annealing clamp is characterized by comprising a lower bottom plate, an upper cover plate and a plurality of upright post structures, wherein the lower bottom plate is provided with a plurality of upper support plates and a plurality of lower support platesIs'

2. The TA15 titanium alloy center sill part stress relieving annealing fixture of claim 1, wherein the pillar structure comprises a high pillar, a low pillar and a wedge, the high pillar and the low pillar are vertically provided with through holes matching with the cross section of the wedge, two ends of the wedge are inserted into the through holes, the inclined surface of the wedge is inclined from the high pillar to the low pillar, and the high pillar and the low pillar are fixed on two sides of the lower bottom plate through nuts and stepped screws.

3. The TA15 titanium alloy center sill part stress relieving annealing fixture of claim 1, wherein two suspension bolts are installed on each side of the bottom plate main body, and two suspension bolts are installed on the upper surface of the upper cover plate.

4. The TA15 titanium alloy center sill part stress relieving annealing fixture as claimed in claim 1, wherein a positioning stop is provided at the position where the pillar structure is installed at the end of the bottom plate, and the tail end of the bottom plate main body is provided with an internally threaded cylindrical pin.

5. The TA15 titanium alloy center sill part stress relieving annealing fixture of claim 1, wherein the annealing fixture is made of 2520 stainless steel with high temperature resistance.