CN211564893U - Thin-wall part welding anti-deformation processing device - Google Patents
Thin-wall part welding anti-deformation processing device Download PDFInfo
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- CN211564893U CN211564893U CN202020034409.6U CN202020034409U CN211564893U CN 211564893 U CN211564893 U CN 211564893U CN 202020034409 U CN202020034409 U CN 202020034409U CN 211564893 U CN211564893 U CN 211564893U
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Abstract
The utility model discloses a thin wall part welding anti-deformation processingequipment, include: the screw rod is provided with a section of coaxial thread with opposite rotation directions on the surfaces of the left end and the right end of the screw rod; the left-expanding tire is in threaded connection with the left end of the screw, the surface of the left-expanding tire, which is in contact with the part, is an arc surface, and the arc length of the arc surface is smaller than the arc length of the semicircle; the right expansion type tire is in threaded connection with the right end of the screw, the surface of the right expansion type tire, which is in contact with the part, is an arc surface, and the arc length of the arc surface is smaller than the arc length of the semicircle. The utility model discloses a fumble the welding shrink condition that the cold limit of hydraulic oil heat dissipation connects different positions, through the great circle external stay mode messenger treat that the welding part forms opposite direction deformation, treat to make the part reconversion guarantee the part through welding deformation after the part welding and require the size, realize the effective control that the part warp.
Description
Technical Field
The utility model belongs to the technical field of thin wall part welding, especially manual argon arc welds welding deformation's controlling means.
Background
As shown in fig. 1 and 5, the aviation aluminum heat exchanger product is an aviation aluminum heat exchanger product, and in the first processing process of the product, the design requirements cannot be met by using the conventional processing method, namely: besides the complicated profile of the product nozzle, the wall thickness of a processing position is thin, and the diameter of the nozzle is of a size
The practical processing result shows that the diameter sizes of the nozzles are inconsistent in all directions, specifically, the diameter size of the nozzle is ①②, the direction size is 141mm, the direction size of ③④ is 144mm, the size over-tolerance is large, batch scrap is caused, the problems are that the product has a technological bottleneck in the implementation process, the product delivery cannot be completed, and the scientific research and production progress is seriously influenced.
Disclosure of Invention
The utility model aims at providing a thin wall part welding anti-deformation processingequipment relies on thin wall part welding anti-deformation processingequipment to make the mouthpiece take place and the welding deformation in the opposite direction before the welding, and welding and cooling process frock must not be dismantled down, and the deformation that produces just in time and the deformation that the frock produced offset each other in the messenger welding process, makes the mouthpiece size reach the requirement.
The utility model discloses rely on the type device that rises to make the mouthpiece take place and welding deformation in the opposite direction before the welding, at two specific directions promptly: two radial one that mutually perpendicular of mouthpiece cross-section is expanded and is contracted, and the thin wall part welding anti-deformation processingequipment must not dismantle in welding and the cooling process, and the deformation that produces in the messenger welding process just offsets with the deformation that the frock produced each other, makes the mouthpiece size reach the requirement.
A welding reversible deformation processing method for a thin-wall part comprises the steps of welding a nozzle with a circular section, and before welding, a tensioning force along the diameter direction of the circular section of the nozzle is given to the nozzle from the inside of the nozzle, so that the size of the outer diameter of the nozzle in the diameter direction is larger than the size required by design, and meanwhile, the size of the outer diameter of the nozzle in the direction perpendicular to the diameter direction is smaller than the size required by design; and keeping the tension force unchanged during the welding process and during cooling after welding until the welding and cooling are finished.
A thin-wall part welding reversible deformation processing device comprises,
the screw rod is provided with a section of coaxial thread with opposite rotation directions on the surfaces of the left end and the right end of the screw rod;
the left expansion type tire is in threaded connection with the left end of the screw, the surface of the left expansion type tire, which is in contact with a part, is an arc surface, the arc length of the arc surface is smaller than the arc length of a semicircle, and the arc length is smaller than the arc length of the semicircle (corresponding to the inner circumference of a product), so that incomplete support of the inner circumference of the product can be realized, namely the inner circumference of the product is lengthened in a certain direction and shortened in a certain direction;
the right expansion type tire is in threaded connection with the right end of the screw, the surface, in contact with the part, of the right expansion type tire is an arc surface, the arc length of the arc surface is smaller than that of a semicircle, and the arc length is smaller than that of the semicircle (corresponding to the inner circumference of the product), so that incomplete support of the inner circumference of the product can be realized, namely the inner circumference of the product is lengthened in a certain direction, and the inner circumference of the product is shortened in a certain direction.
Furthermore, a convex block is connected to the middle position of the screw rod in the axial direction, and a round hole penetrating through the screw rod is formed in the convex block.
Furthermore, threaded holes are formed in the connecting surfaces of the left expansion type tire and the right expansion type tire with the screw.
Furthermore, a plurality of bulges are arranged on the surfaces of the arc surfaces of the left expansion type tire and the right expansion type tire, and the axes of the bulges are collinear with the radial direction of the arc surface.
Furthermore, the bulges comprise first bulges positioned at the intersection positions of the axis of the screw rod and the arc surfaces of the left-expansion type tyre and the right-expansion type tyre, and second bulges which are symmetrically arranged on the arc surfaces of the left-expansion type tyre and the right-expansion type tyre relative to the first bulges. The bulges play a role in limiting, the expansion type tires on the two sides are enabled to be flush, deviation of a process device in the correction and welding process is avoided, and the device is prevented from falling into the inner cavity of a product to damage the product.
Further, the left-hand expanding tire and the right-hand expanding tire are symmetrical about a plane perpendicular to the axis of the screw.
The welding method adopting the thin-wall part welding reversible deformation processing device comprises the following steps:
the method comprises the following steps that firstly, a thin-wall part welding reversible deformation processing device is arranged in a pipe nozzle of a part, the position of the thin-wall part welding reversible deformation processing device is adjusted to meet the condition that the arc surface surfaces of a left expansion type tire and a right expansion type tire are attached to the inner wall of the pipe nozzle, and meanwhile, the axis of a screw rod is ensured to be collinear with the radial line of the inner circle of the pipe nozzle of the part;
rotating the screw rod to increase the distance between the left expansion type tire and the right expansion type tire, and stopping rotating the screw rod when the first outer diameter of the nozzle of the part is larger than the design requirement size and the second outer diameter is smaller than the design requirement size, wherein the first outer diameter is the outer diameter of the collinear position of the nozzle and the axis of the screw rod, and the second outer diameter is the outer diameter vertical to the first outer diameter;
step three, keeping the thin-wall part welding reversible deformation processing device still, and welding the parts;
and step four, keeping the thin-wall part welding reversible deformation processing device still, and taking out the thin-wall part welding reversible deformation processing device after the part is cooled to the room temperature.
The utility model discloses be applied to aluminum alloy thin wall spare abnormal shape mouthpiece profile, especially offset welding deformation through control mouthpiece opposite direction deformation in welding process, the final processing goes out high accuracy size part. Before welding, the expansion tool is used for enabling the nozzle to deform in the opposite direction of welding deformation in a specific direction, so that deformation generated in the welding process and deformation artificially generated by the expansion tool before welding are offset mutually, and the special-shaped nozzle of the thin-wall part meets the size required by a drawing.
The utility model discloses it is spacing to be different from among the current welding deformation control method common whole (along the outside tight that rises of whole inner wall circumference promptly in the mouthpiece, perhaps the mode of pressing down the mouthpiece wall simultaneously at mouthpiece inner wall and surface), and what have pertinence is according to the direction of deformation and carries out predeformation, especially to circular cross-section, only just realizes one of two directions with a tight power that rises and contracts.
Compared with the prior art, the utility model discloses an advantage is embodied in: the utility model discloses a carry out directional predeformation to the mouthpiece for welding deformation becomes regular and controllable, has selected promptly to produce predeformation at two external diameter directions of mouthpiece mutually perpendicular, and an orientation is greater than the welding design and requires the size, and an orientation is less than the welding design and requires the size, and keeps this deformability unchangeable in welding process and the cooling process after the welding, finally makes the mouthpiece external diameter size after the welding satisfy the requirement.
Drawings
FIGS. 1 and 4 are schematic views of product parts;
FIGS. 2 and 6 are schematic structural diagrams of a product part clamped on a thin-wall part welding reversible deformation processing device; FIG. 3 is a schematic view of a thin-wall part welding reversible deformation processing device;
FIG. 5 is an enlarged partial view of region I of FIG. 4;
in the figure: 1-part, 2-left expansion type tire, 3-screw and 4-right expansion type tire.
Detailed Description
The following description of the present invention will be made with reference to the accompanying drawings and specific embodiments, but it should not be understood that the scope of the present invention is limited to the following embodiments, and various modifications, substitutions and changes made according to the ordinary technical knowledge and conventional means in the art without departing from the technical spirit of the present invention are included in the scope of the present invention.
Referring to fig. 1, in this embodiment, a manual argon arc welding method is used for a thin-wall aluminum alloy high-precision nozzle assembly, the size of the component is ensured by a back-support tensioning method, a left-expansion type tire 2 and a right-expansion type tire 4 are selected as appropriate according to the diameter size of an inner hole of a part 1 to be processed, the outer circle of the part 1 to be processed is deformed by an adjusting screw 3, and the welding deformation and the tool expansion deformation are mutually offset, so that the outer circle size of the part 1 is ensured to be 142.6 ± 0.5 mm.
The processing mode of the part 1 is manual argon arc welding, and the welding mode of the part 1 enables the welding of parts to change into a rule: the welding deformation direction is a single direction, the deformation conditions in the same direction are basically consistent, the front and rear welding joints of the zero (assembly) component are consistent in form, and the left and right welding joints of the zero (assembly) component are consistent in form.
Welding under 1 free state of part lets part 1 freely warp, its change law: the size of the excircle in the direction is increased (the size is 144mm), the size of the excircle in the direction is decreased (the size is 141mm), the deformation direction is basically controllable, and the deformation sizes are basically the same.
The thin-wall part welding anti-deformation processing device is adjusted before welding to enable the pipe nozzle of the part 1 to deform in the opposite direction, the large-arc-surface left-expansion type tire 2 and the large-arc-surface right-expansion type tire 4 are selected, and the left-rotation threaded screw 3 and the right-rotation threaded screw 3 are selected to enable the left-expansion type tire 2 and the right-expansion type tire 4 to have the function of expanding the pipe nozzle of the part 1, so that the device is convenient to install and disassemble.
The method comprises the steps of deforming a pipe nozzle of a part 1 to a certain size by using a thin-wall part welding anti-deformation processing device, enabling the deformation amount to be just offset with the welding deformation amount, expanding the pipe nozzle of the part 1 by using the thin-wall part welding anti-deformation processing device, deforming the outer circle size in the direction to 144mm, reducing the outer circle size in the direction to 141mm, and preventing the thin-wall part welding anti-deformation processing device from being detached in the welding process.
As shown in fig. 3, the thin-wall part welding reversible deformation processing device comprises a screw rod 3, a left expansion type tire 2 and a right expansion type tire 4, wherein the surfaces of the left end and the right end of the screw rod 3 are respectively provided with a section of coaxial thread with opposite rotation directions; the left expanding tire 2 and the right expanding tire 4 are consistent in size and shape. The left expanding tire 2 is in threaded connection with the left end of the screw 3, the surface of the left expanding tire 2, which is in contact with the part 1, is an arc surface, and the arc length of the arc surface is smaller than the arc length of the semicircle; the right expansion type tyre 4 is in threaded connection with the right end of the screw rod 3, the surface of the right expansion type tyre 4, which is in contact with the part 1, is an arc surface, and the arc length of the arc surface is smaller than the arc length of the semicircle. Since the thread directions of the two ends are opposite, when the screw 3 is rotated, the distance between the left and right expanding tires 2, 4 is increased (or decreased). The middle position of the screw rod 3 in the axial direction is connected with a convex block, the convex block is provided with a round hole which is communicated with the screw rod 3, the screw rod 3 is convenient to operate, and when the screw rod is used, the round rod is inserted into the round hole, so that the screw rod 3 can be rotated. The arc surface surfaces of the left expanding tire 2 and the right expanding tire 4 are provided with 3 bulges, the axes of the bulges are collinear with the radial direction of the arc surface, one of the 3 bulges is positioned at the intersection position of the axis of the screw rod 3 and the arc surface, and the other 2 bulges are symmetrical about the bulges.
FIG. 2 and FIG. 6 show the assembling position and the dimension of the thin-walled part inverse deformation (expansion) welding processing device of the present embodiment, after the inverse deformation (expansion) welding processing device is assembled on the nozzle of the cold-side gas-collecting hood assembly, the large containing surfaces (arc surfaces) of the left expansion tire 2 and the right expansion tire 4 are attached to the inner hole of the assembly of the part 1 in large area by the adjusting screw 3, so that the overall dimension of the assembly nozzle in the required ③④ direction reaches 144mm, and the dimension in the ①② direction is 141mm
Request (see figure 5 for an enlarged rotation in direction i).
Specifically, in the present embodiment, a solution is proposed for the problem of out-of-tolerance dimensional deformation and disqualification that is likely to occur in the component 1 in fig. 1 and 5 as follows:
designing and manufacturing an internal support thin-wall part welding reversible deformation processing device (expansion type clamp) as shown in figure 3. Welding is then carried out according to the following steps:
the first step is as follows: expanding the inner hole of the nozzle of the positioned part 1 to 144mm in the direction shown in figure 2 by using a thin-wall part welding reversible deformation processing device, and at the moment, 141mm in the direction;
the second step is that: keeping a thin-wall part welding reversible deformation processing device assembled on the part 1 to weld a nozzle assembly of the part 1, such as a welding seam shown in figure 1;
the third step: after welding, the thin-wall part welding reversible deformation processing device is not detached for cooling;
the fourth step: and (5) disassembling the thin-wall part welding reversible deformation processing device after cooling.
The fifth step: and (4) after the thin-wall part welding reversible deformation processing device is detached, checking the size, and properly correcting the component by using the thin-wall part welding reversible deformation processing device.
Claims (5)
1. The utility model provides a thin wall part welding anti-deformation processingequipment which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the screw rod (3), the left end of the said screw rod (3), the right end surface processes a section of turning on opposite and coaxial whorl separately;
the left-expansion type tire (2), the left-expansion type tire (2) is in threaded connection with the left end of the screw (3), the surface of the left-expansion type tire (2) in contact with the part (1) is an arc surface, and the arc length of the arc surface is smaller than that of the semicircle;
the right expansion type tire (4) is in threaded connection with the right end of the screw (3), the surface of the right expansion type tire (4) in contact with the part (1) is an arc surface, and the arc length of the arc surface is smaller than that of the semicircle.
2. The thin-wall part welding reverse deformation processing device according to claim 1, characterized in that: the middle position of the screw rod (3) in the axial direction is connected with a convex block, and a round hole penetrating through the screw rod (3) is formed in the convex block.
3. The thin-wall part welding reverse deformation processing device according to claim 1, characterized in that: the arc surface surfaces of the left expansion type tire (2) and the right expansion type tire (4) are provided with a plurality of bulges, and the axes of the bulges are collinear with the radial direction of the arc surface.
4. The thin-wall part welding reverse deformation processing device of claim 3, characterized in that: the bulges comprise first bulges positioned at the intersection positions of the axis of the screw rod (3) and the arc surfaces of the left expansion type tyre (2) and the right expansion type tyre (4), and second bulges which are symmetrically arranged on the arc surfaces of the left expansion type tyre (2) and the right expansion type tyre (4) relative to the first bulges.
5. The thin-wall part welding reverse deformation processing device according to claim 1, characterized in that: the left expansion type tire (2) and the right expansion type tire (4) are symmetrical about a plane perpendicular to the axis of the screw (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020034409.6U CN211564893U (en) | 2020-01-08 | 2020-01-08 | Thin-wall part welding anti-deformation processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020034409.6U CN211564893U (en) | 2020-01-08 | 2020-01-08 | Thin-wall part welding anti-deformation processing device |
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| Publication Number | Publication Date |
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| CN211564893U true CN211564893U (en) | 2020-09-25 |
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| CN202020034409.6U Active CN211564893U (en) | 2020-01-08 | 2020-01-08 | Thin-wall part welding anti-deformation processing device |
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- 2020-01-08 CN CN202020034409.6U patent/CN211564893U/en active Active
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