阅读说明：本技术 一种钛合金薄壁卷筒焊接用精度控制工装 (Titanium alloy thin wall reel precision control frock for welding ) 是由 郑申清 田永武 刘茵琪 李渤渤 杨学东 于 2021-08-12 设计创作，主要内容包括：一种钛合金薄壁卷筒焊接用精度控制工装,包括用于套设在待焊接薄壁卷筒内、沿薄壁卷筒径向支撑薄壁卷筒内壁的装夹圆盘,装夹圆盘由通过斜面配合的第一盘体和第二盘体组成；还包括沿装夹圆盘轴向对第一盘体和第二盘体施压、以驱动第一盘体和第二盘体沿所述斜面移动、进而调节装夹圆盘的外径使薄壁卷筒内壁得到稳定支撑的调节装置。本发明能够通过斜面对接的装夹圆盘实现错位安装,在方便工装安装的同时能精准的控制装夹圆盘的尺寸,保证钛合金薄壁卷筒的薄板表面受力稳定均匀,有效防止钛合金薄壁卷筒的薄板在焊接过程中发生变形。(A titanium alloy thin-wall winding drum welding precision control tool comprises a clamping disc, a first clamping disc and a second clamping disc, wherein the clamping disc is sleeved in a thin-wall winding drum to be welded and supports the inner wall of the thin-wall winding drum along the radial direction of the thin-wall winding drum; the adjusting device is used for applying pressure to the first disc body and the second disc body along the axial direction of the clamping disc so as to drive the first disc body and the second disc body to move along the inclined plane and further adjust the outer diameter of the clamping disc to enable the inner wall of the thin-wall winding drum to be stably supported. The invention can realize dislocation installation through the clamping disc butted by the inclined planes, can accurately control the size of the clamping disc while facilitating the installation of the tool, ensures the stable and uniform stress on the surface of the thin plate of the titanium alloy thin-wall winding drum, and effectively prevents the thin plate of the titanium alloy thin-wall winding drum from deforming in the welding process.)

1. The precision control tool for welding the titanium alloy thin-wall winding drum is characterized by comprising a clamping disc (3) which is sleeved in the thin-wall winding drum to be welded and radially supports the inner wall of the thin-wall winding drum along the thin-wall winding drum, wherein the clamping disc (3) consists of a first disc body (301) and a second disc body (302) which are matched through an inclined plane (303);

the adjusting device is characterized by further comprising an adjusting device which applies pressure to the first disc body (301) and the second disc body (302) along the axial direction of the clamping disc (3) so as to drive the first disc body (301) and the second disc body (302) to move along the inclined surface (303) and further adjust the outer diameter of the clamping disc (3) to enable the inner wall of the thin-wall winding drum to be stably supported.

2. The precision control tool for welding the titanium alloy thin-wall winding drum as claimed in claim 1, wherein the adjusting device comprises an upper base (1) and a lower base (4) which are arranged on two end faces of the clamping disc (3), and a bolt assembly (2) which is used for adjusting pressing force of the upper base (1) and the lower base (4) and is used for applying axial pressure along the clamping disc (3) to the first disc body (301) and the second disc body (302) is arranged through the upper base (1), the clamping disc (3) and the lower base (4).

3. The precision control tool for welding the titanium alloy thin-wall winding drum according to claim 2, wherein four bolt assemblies (2) are arranged and penetrate through the clamping disc (3) uniformly.

4. The precision control tool for welding the titanium alloy thin-wall winding drum as claimed in claim 1, wherein an included angle of 40-50 degrees is formed between the inclined surface (303) and the axis of the clamping disc (3).

5. The precision control tool for welding the titanium alloy thin-wall winding drum according to claim 1, wherein an included angle of 45 degrees is formed between the inclined surface (303) and the axis of the clamping disc (3).

6. The precision control tool for welding the titanium alloy thin-wall winding drum according to any one of claims 1 to 5, wherein the clamping disc (3) is made of a material with a thermal expansion coefficient higher than that of the titanium alloy.

7. The precision control tool for welding the titanium alloy thin-wall winding drum according to claim 6, wherein the clamping disc (3) is made of 45# steel.

8. The precision control tool for welding the titanium alloy thin-wall winding drum according to claim 7, wherein the adjusting device is made of 45# steel.

Technical Field

The invention relates to the technical field of titanium alloy welding, in particular to a precision control tool for welding a titanium alloy thin-wall winding drum.

Background

In aviation structural materials, titanium alloys have been developed rapidly with their excellent overall properties. The titanium alloy sheet metal is out of shape great when welding, there are horizontal shrink, vertical shrink, bending deformation etc., it has certain complexity, pluralism to warp, the regional temperature variation in welding process ground violently, lead to titanium alloy thin wall structure to produce great welding residual stress easily in welding process, arouse welding seam department to warp scheduling problem easily, to the requirement of size precision extremely strict, the aviation, space flight titanium alloy product that can't process again will produce the great problem, the frock of current graphite type frock has following problem: the assembly and disassembly difficulty is very high, and a hammer is required for knocking; the graphite type tool can not be used repeatedly, the graphite type tool can be used only once, and the graphite type tool must be damaged in the dismantling process; the dimensional accuracy can not be guaranteed, and the graphite type tool is difficult to realize high-accuracy control on the deformation of the titanium alloy thin-wall winding drum due to the fact that the tight fit size can change in the installation process.

In addition, the existing titanium alloy product is often in an annealing state as a final use state, so the titanium alloy deformation correction is usually performed at this stage, a processed graphite type is often adopted at present, the graphite type is knocked into a deformation part, and the purpose of deformation correction is achieved through annealing. Therefore, how to improve welding deformation and improve the dimensional accuracy of the component is always a hot spot problem in the manufacture of titanium alloy thin-wall structures.

Disclosure of Invention

The invention aims to provide a precision control tool for welding a titanium alloy thin-wall winding drum, and aims to solve the problem that the existing tool is difficult to control the deformation of the titanium alloy thin-wall winding drum with high precision during welding of the titanium alloy thin-wall winding drum.

The technical scheme adopted by the invention to solve the technical problems is as follows:

a titanium alloy thin-wall winding drum welding precision control tool comprises a clamping disc, a first clamping disc and a second clamping disc, wherein the clamping disc is sleeved in a thin-wall winding drum to be welded and supports the inner wall of the thin-wall winding drum along the radial direction of the thin-wall winding drum;

the adjusting device is used for applying pressure to the first disc body and the second disc body along the axial direction of the clamping disc so as to drive the first disc body and the second disc body to move along the inclined plane and further adjust the outer diameter of the clamping disc to enable the inner wall of the thin-wall winding drum to be stably supported.

Furthermore, adjusting device is including setting up last base and the lower base on clamping disc both ends face, runs through upper base, clamping disc and lower base and is equipped with the bolt assembly that is used for adjusting upper base and lower base packing force to exert along clamping disc axial pressure to first disk body and second disk body.

Furthermore, the number of the bolt assemblies is four, and the bolt assemblies are uniformly distributed to penetrate through the clamping disc.

Furthermore, the inclined plane and the axis of the clamping disc form an included angle of 40-50 degrees.

Furthermore, the inclined plane and the axis of the clamping disc form an included angle of 45 degrees.

Furthermore, the clamping disc is made of a material with a thermal expansion coefficient higher than that of the titanium alloy.

Furthermore, the clamping disc is made of 45# steel.

Furthermore, the material of adjusting device is 45# steel.

The invention has the beneficial effects that:

1. according to the tool, the clamping disc is designed to be formed by butting the two discs through the inclined planes, so that staggered installation is realized, the size of the clamping disc can be accurately controlled while installation is facilitated, the surface stress of the thin plate of the titanium alloy thin-wall winding drum can be ensured to be stable and uniform, and the thin plate of the titanium alloy thin-wall winding drum is effectively prevented from deforming in the welding process.

2. The tool is made of a material with a thermal expansion coefficient slightly larger than that of the titanium alloy, and the thermal expansion coefficient of the titanium alloy is about 9 multiplied by 10^-6V. by usingCoefficient of thermal expansion of 1.2X 10^-5The 45# steel at/DEG C can well utilize the thermal expansion coefficient of the material to be slightly larger than that of the titanium alloy in the annealing process, and the dimensional accuracy of the product is accurately controlled through the self contraction and expansion of the material, so that the control of the welding ultrahigh-accuracy size of the titanium alloy thin plate reel in the annealing process is realized.

Description of the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a chuck disk according to the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic structural view of the upper and lower bases of the present invention.

The labels in the figure are: 1. the clamping device comprises an upper base, 2, a bolt assembly, 3, a clamping disc, 301, a first disc body, 302, a second disc body, 303, an inclined plane, 4 and a lower base.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and detailed description, wherein in the description of the invention it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The invention relates to an embodiment 1 of a precision control tool for welding a titanium alloy thin-wall winding drum, which comprises:

as shown in fig. 1 to 4, the precision control tool for welding a titanium alloy thin-wall reel in this embodiment includes a clamping disc 3, the clamping disc 3 can be disposed according to titanium alloy thin-wall reels to be welded with different sizes, an existing titanium alloy thin-wall reel to be welded is usually formed by rolling a titanium alloy thin plate into a cylindrical shape, and spot welding is performed on a rolled interface, the clamping disc 3 is used for being sleeved in the thin-wall reel to be welded and supporting an inner wall of the thin-wall reel along a radial direction of the thin-wall reel, in order to perform high precision control on the size when the thin-wall reel is welded, the clamping disc 3 includes a first disc 301 and a second disc 302, the first disc 301 and the second disc 302 are assembled together by an inclined plane 303 to form the clamping disc 3, that is, the first disc 301 and the second disc 302 may be two semicircular discs, and the abutting joint of the two semicircular discs for abutting to form a circular clamping disc is provided with an inclined plane-shaped abutting end, the opposed interface between the first tray 301 and the second tray 302 is formed in an inclined surface shape, and after the first tray 301 and the second tray 302 are used in combination, the chucking disk 3 having an inclined interface, i.e., an inclined surface 303 is formed, and it should be noted that the inclined surface 303 is provided to allow the first tray 301 and the second tray 302 to move relative to each other along the inclined surface 303, and therefore, the inclined surface 303 formed by the opposed interface between the first tray 301 and the second tray 302 is not limited to a flat surface or a curved surface as a whole.

After the inclined plane 303 is arranged, the first disc body 301 and the second disc body 302 move along the inclined plane 303 by arranging an adjusting device for applying pressure to the first disc body 301 and the second disc body 302 along the axial direction of the clamping disc 3, so as to adjust the supporting force to the inner wall of the thin-wall winding drum and achieve the accurate control of the size of the thin-wall winding drum, when the adjusting device is implemented specifically, the adjusting device comprises an upper base 1 and a lower base 4 which are arranged on two end surfaces of the clamping disc 3, the upper base 1 and the lower base 4 are attached to the end surface of the clamping disc 3 in the axial direction of the clamping disc 3, the clamping disc 3 is clamped, wherein the clamping disc 3 is provided with a through hole, a bolt assembly 2 is arranged along the through hole and penetrates through the clamping disc 3, the upper base 1 and the lower base 4, the bolt assembly 2 is used for adjusting the pressing force of the upper base 1 and the lower base 4 to the clamping disc 3, and the first disc body 301 and the second disc body 302 are applied with pressure along the axial direction of the clamping disc 3 by screwing a nut in the bolt assembly 2, the first disc body 301 and the second disc body 302 can move along the inclined plane 303 through the pressure, so that the outer diameter of the clamping disc 3 changes along the radial direction, the inner wall of the thin-wall winding drum is stably supported until the outer diameter of the titanium alloy thin-wall winding drum to be welded is adjusted to meet the welding requirement, and the purpose of accurately controlling the size of the titanium alloy thin-wall winding drum is achieved.

The number of the bolt assemblies 2 in this embodiment may be set according to an actual situation, for example, four or six bolt assemblies may be provided, and the bolt assemblies are uniformly distributed to penetrate through the clamping disk 3, so that the pressure applied to the first disk 301 and the second disk 302 along the axial direction of the clamping disk 3 is more uniform, which is beneficial to improving the control precision, and the specific bolt assemblies 2 may be respectively provided on the first disk 301 and the second disk 302, for example, two or three bolt assemblies 2 are respectively provided on the first disk 301 and the second disk 302.

The invention relates to an embodiment 2 of a precision control tool for welding a titanium alloy thin-wall winding drum, which comprises the following components:

different from the embodiment 1, in the embodiment, the inclined surface 303 forms an included angle of 40 ° to 50 ° with the axis of the clamping disc 3, and the included angle is preferably 45 °, and therefore, when the first disc body 301 and the second disc body 302 are subjected to axial pressure along the clamping disc 3, relative displacement changes can occur more stably due to the inclined surface 303 of the angle, which is beneficial to stable size changes of the clamping disc 3 in the radial direction, and the phenomenon of misalignment between the first disc body 301 and the second disc body 302 is effectively avoided.

Embodiment 3 of the precision control tool for welding the titanium alloy thin-wall winding drum of the invention:

different from the above embodiment, the precision controller for welding the titanium alloy thin-wall winding drum in the embodiment is made of a carefully screened material, and the clamping disc 3 is made of a material with a thermal expansion coefficient slightly higher than that of the titanium alloy.

The diameter tolerance of the titanium alloy reel finished product is required to be within 0.5mm, in order to accurately control the dimensional precision, a material with a thermal expansion coefficient slightly higher than that of the titanium alloy is selected to manufacture the clamping disc 3 through calculation, and the thermal expansion coefficient of the titanium alloy is about 9 multiplied by 10^-6The invention selects 45# steel to manufacture the clamping disc 3, and the thermal expansion coefficient of the 45# steel is about 1.2 multiplied by 10^-5The temperature per DEG C is that after the titanium alloy thin-wall winding drum is welded, the tool and the titanium alloy thin-wall winding drum can be annealed together, and the thermal expansion coefficient of the clamping disc 3 is slightly larger than that of the titanium alloy, so that the clamping disc can be used for clamping the titanium alloy thin-wall winding drumThe problem of ultrahigh-precision size control of titanium alloy thin-wall reel welding is further solved by utilizing the difference of thermal expansion coefficients in annealing treatment.

In this embodiment, in order to better enable the titanium alloy thin-wall winding drum and the tool to be annealed together, and to solve the problem of controlling the ultra-high precision size, the material of the whole adjusting device may be 45# steel.

The precision control tool of the embodiment is utilized to customize the diameter phi of a companymm, TA15 titanium alloy reel welding with thickness of 1.8mm, the requirement can only be used for argon arc welding, the product has large diameter, thin wall, extremely high requirement for dimensional accuracy, large welding heat input, and great deformation of the product is easy to cause, before welding, the first disk 301 of the clamping disk 3 is placed above the lower base 4 and is connected in series through the bolt component 2, the first disk is placed at the position to be welded of the titanium alloy reel, the second disk 302 is placed above the lower base 4 and is connected in series through the bolt, the upper base 1 is sleeved in the bolt component 2, the nut in the bolt component 2 is screwed by a spanner to drive the upper base 1 to move towards the clamping disk 3, the outer diameter of the clamping disk 3 is continuously increased until the outer diameter of the titanium alloy thin-wall reel is increased to the required size, the tool and the titanium alloy thin-wall reel are annealed after welding, then the nut in the bolt component 2 is screwed by the spanner, and unloading the tool to obtain a titanium alloy reel product, and detecting to obtain a product with the diameter of phi 375.2mm, so that the requirement is met.

The precision control tool of the embodiment is utilized to customize the diameter phi of a companymm, TC4 titanium alloy reel welding that thickness is 2.2 mm adopts unilateral shaping one shot laser welding, and this product diameter is big, the wall is thin, and the size precision requirement is extremely high, forms the welding seam department in the welding process and collapses the deformation easily, can't guarantee size precision. Before welding, the first plate body 301 of the clamping disc 3 is placed above the lower base 4 and connected in series through the bolt assemblies 2, and then placed on a to-be-welded positionConnecting the parts, placing the second plate body 302 of the disc 3 above the lower base 4 and connecting the parts in series through the bolt assembly 2, according to the size of the titanium alloy thin-wall cylinder part, sleeving the upper base 1 into the bolt assembly 2, screwing the nut in the bolt assembly 2 with a wrench to drive the upper base 1 to move towards the clamping disc 3, enabling the outer diameter of the clamping disc 3 to be continuously enlarged until the outer diameter of the titanium alloy thin-wall drum is enlarged to reach the size required, stopping the process after the welding is finished, annealing the tool and the titanium alloy thin-wall drum together, then screwing the nut in the bolt assembly 2 off with the wrench, dismounting the tool to obtain a titanium alloy drum product, and detecting that the diameter of the product is phi 275.1mm to meet the requirements.

It should be noted that the above embodiments are only for illustrating the present invention, but the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention fall within the protection scope of the present invention.