CN210648969U

CN210648969U - Tool for controlling geometric tolerance and size of TIG welding of thin-walled pipe and flange

Info

Publication number: CN210648969U
Application number: CN201921547125.0U
Authority: CN
Inventors: 陈基明; 司国栋
Original assignee: Shenzhen Shengda Vacuum Brazing Technology Ltd
Current assignee: Shenzhen Shengda Vacuum Brazing Technology Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-06-02
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a control thin wall pipe and flange TIG welding geometric tolerances and frock of size, include: the detachable positioning cylinder is coaxially sleeved on the outer wall of the thin-wall pipe to be welded, and the length of the detachable positioning cylinder is consistent with that of the thin-wall pipe to be welded. The end faces of two ends of the detachable positioning cylinder are concavely provided with sinking grooves, the flanges to be welded are placed in the sinking grooves and sleeved on the outer wall of the pipe orifice of the thin-walled pipe to be welded, and the depth of the sinking grooves is consistent with the thickness of the flanges to be welded. The beneficial effects of the utility model reside in that: the welding device has the advantages that the whole structure is simple, the use is convenient, the welding device can correct the thin-wall pipe to be welded and the flanges at the two ends of the thin-wall pipe to be welded before welding, so that the verticality between the thin-wall pipe and the flanges after welding is effectively guaranteed, the coaxiality between the two flanges is effectively guaranteed, and the whole length size of a finished product is effectively guaranteed.

Description

Tool for controlling geometric tolerance and size of TIG welding of thin-walled pipe and flange

Technical Field

The utility model relates to a technical field of welding frock, in particular to frock of control thin wall pipe and flange TIG welding geometric tolerances and size.

Background

In a tube body structure which is connected with a normal temperature section of a superconducting magnet and a low temperature section of 269 ℃ below zero and internally filled with low temperature helium gas, a stainless steel thin-wall tube with the wall thickness of 0.3mm to 0.4mm and a stainless steel flange need to be subjected to TIG welding, and the welding structure usually needs to ensure that the verticality between the stainless steel flange and the stainless steel thin-wall tube reaches 0.3mm and the coaxiality between the two stainless steel flanges reaches phi 0.15 mm.

When the pipe body structure is processed in the industry, a stainless steel thin-wall pipe is processed into a pipe blank by adopting a coil welding mode. The pipe blank mouth of pipe that the roll welding processed out is not parallel and level usually, so need do the length with the pipe blank, wire-electrode cutting both ends again, with whole length wire-electrode cutting to required size, cut the mouth of pipe flat simultaneously to subsequent TIG welding is convenient for. However, when wire cutting is performed, the pipe orifices at two ends are easy to deflect due to the fact that the thin-walled pipe is long and has certain flexibility; and the path of molybdenum wire cutting can not be completely perpendicular to the thin-walled tube clamping tool, so that the perpendicularity of the tube mouth of the tube blank subjected to wire cutting and the axis thereof usually exceeds 0.5mm, if the tube blank is directly welded without tool correction, the requirement of perpendicularity of the welded product is difficult to guarantee, the requirement of coaxiality between two flanges can not be met, and the whole length and size of the welded finished product are difficult to control.

SUMMERY OF THE UTILITY MODEL

The main objective of the utility model is to provide a frock of control thin wall pipe and flange TIG welding geometric tolerances and size, when aiming at solving TIG welding thin wall pipe and the flange of cover at thin wall pipe both ends, straightness that hangs down between thin wall pipe and the flange, axiality between two flanges and the problem that finished product's whole length size is difficult to control after the welding between thin wall pipe and the flange.

In order to achieve the above object, the utility model provides a control thin wall pipe and flange TIG welding geometric tolerances and frock of size, include: the detachable positioning cylinder is coaxially sleeved on the outer wall of the thin-wall pipe to be welded, and the length of the detachable positioning cylinder is consistent with that of the thin-wall pipe to be welded. The end faces of two ends of the detachable positioning cylinder are concavely provided with sinking grooves, the flanges to be welded are placed in the sinking grooves and sleeved on the outer wall of the pipe orifice of the thin-walled pipe to be welded, and the depth of the sinking grooves is consistent with the thickness of the flanges to be welded.

Preferably, the removable positioning cartridge comprises: the outer wall of the two semicircular positioning plates is sleeved with a fixing sleeve.

Preferably, the perpendicularity between the end face of the sinking groove and the central axis of the detachable positioning cylinder is less than 0.15 mm.

Preferably, the coaxiality of the sinking groove and the detachable positioning cylinder is less than phi 0.05 mm.

Compared with the prior art, the beneficial effects of the utility model reside in that: the welding device has the advantages that the whole structure is simple, the use is convenient, the welding device can correct the thin-wall pipe to be welded and the flanges at the two ends of the thin-wall pipe to be welded before welding, so that the verticality between the thin-wall pipe and the flanges after welding is effectively guaranteed, the coaxiality between the two flanges is effectively guaranteed, and the whole length size of a finished product is effectively guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a front structure view of TIG welding connection of a thin-wall pipe and a flange;

3 FIG. 32 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 in 3 FIG. 31 3; 3

Fig. 3 is an explosion structure diagram of an embodiment of the tool for controlling the TIG welding form and position tolerance and size of the thin-wall pipe and the flange according to the present invention;

the purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.

Detailed Description

The utility model provides a control thin wall pipe and flange TIG welding geometric tolerances and frock of size.

3 referring 3 to 3 fig. 31 3- 3 3 3, 3 fig. 31 3 is 3 a 3 front 3 structural 3 view 3 of 3 a 3 thin 3- 3 walled 3 tube 3 and 3 flange 3 TIG 3 welding 3 connection 3, 3 fig. 32 3 is 3 a 3 sectional 3 structural 3 view 3 of 3 a 3 position 3 a 3- 3 a 3 in 3 fig. 31 3, 3 and 3 fig. 3 3 3 is 3 an 3 explosion 3 structural 3 schematic 3 view 3 of 3 an 3 embodiment 3 of 3 the 3 tool 3 for 3 controlling 3 the 3 form 3 and 3 position 3 tolerance 3 and 3 size 3 of 3 the 3 thin 3- 3 walled 3 tube 3 and 3 flange 3 TIG 3 welding 3 of 3 the 3 present 3 invention 3. 3

As shown in fig. 1-2, in the embodiment of the present invention, the tool for controlling the form and position tolerance and the size of the TIG welding of the thin-walled tube and the flange is used for correcting the form and position tolerance between the thin-walled tube 100 and the flange 200 and the overall length and size of the assembly of the thin-walled tube 100 and the flange 200 before the TIG welding of the thin-walled tube 100 and the flange 200 sleeved at both ends of the thin-walled tube 100.

As shown in fig. 3, the tool for controlling the form and position tolerance and the size of the TIG welding of the thin-wall pipe and the flange comprises: and the detachable positioning cylinder is coaxially sleeved on the outer wall of the thin-walled tube 100 to be welded, and the length of the detachable positioning cylinder is consistent with that of the thin-walled tube 100 to be welded. The end faces of the two ends of the detachable positioning cylinder are concavely provided with a sinking groove 310, the flange 200 to be welded is placed in the sinking groove 310 and sleeved on the outer wall of the pipe orifice of the thin-walled pipe 100 to be welded, and the depth of the sinking groove 310 is consistent with the thickness of the flange 200 to be welded.

Specifically, for installation and dismantlement when facilitating the use, can dismantle a location section of thick bamboo and include: two semicircular locating plates 320 of symmetry laminating, two semicircular locating plate 320 outer wall cover are equipped with fixed sleeve 400.

When the thin-wall pipe is installed, firstly, the thin-wall pipe 100 is coated by the two semicircular positioning plates 320; then, the two flanges 200 are respectively pressed into the sinking grooves 310 at the two ends of the two semicircular positioning plates 320 and sleeved at the two ends of the thin-walled tube 100; then, the fixing sleeve 400 is sleeved on the outer wall of the two semicircular positioning plates 320, so that the two semicircular positioning plates 320 are fixed; finally, the pipe openings at the two ends of the thin-walled pipe 100 are finely adjusted to be flush with the end surfaces of the two flanges 200 respectively. Therefore, the perpendicularity between the thin-walled pipe 100 and the two flanges 200 can be corrected, the coaxiality between the two flanges 200 can be corrected, and the whole length size of the thin-walled pipe 100 and the two flanges 200 after assembly can be corrected.

During welding, 6 points are uniformly spot-welded at the welding seam where the corrected pipe orifice of the thin-walled pipe 100 to be welded is attached to the end faces of the flanges 200 at the two ends of the pipe, so that the flanges 200 are preliminarily fixed on the thin-walled pipe 100, and a semi-finished product is obtained. Then the fixing sleeve 400 and the two semicircular positioning plates 320 are removed, the preliminarily welded semi-finished product is placed on a rotating table of a welding machine in the next working procedure, and then the welding seam at the joint of the pipe orifice of the thin-wall pipe 100 and the end faces of the flanges 200 at the two ends of the thin-wall pipe is fully welded, so that a finished product is obtained, the verticality between the welded thin-wall pipe 100 and the flanges 200 is ensured, the coaxiality between the two flanges 200 is ensured, and the integral length size of the thin-wall pipe 100 and the two flanges 200 after welding is ensured.

Further, in the present embodiment, in order to ensure the perpendicularity between the welded thin-walled tube 100 and the flange 200, the perpendicularity between the end surface of the sinking groove 310 and the central axis of the detachable positioning cylinder is less than 0.15 mm.

Further, in this embodiment, in order to ensure the requirement of coaxiality between the two flanges 200 after welding, the coaxiality between the sink 310 and the detachable positioning cylinder is less than phi 0.05 mm.

The utility model discloses an use form and position tolerance and length dimension to treat welded thin wall pipe 100 and cover and rectify at the flange 200 at thin wall pipe 100 both ends with the flange of dismantling of guaranteeing more easily of length and dimension, simple structure, it is very convenient to use. And then performing TIG welding on the corrected thin-walled tube 100 and the flange 200, thereby ensuring the verticality between the welded thin-walled tube 100 and the flange 200, ensuring the coaxiality between the two flanges 200 and ensuring the overall length size of a welded finished product.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The utility model provides a control thin wall pipe and flange TIG welding geometric tolerances and frock of size which characterized in that includes: the detachable positioning cylinder is coaxially sleeved on the outer wall of the thin-wall pipe to be welded, and the length of the detachable positioning cylinder is consistent with that of the thin-wall pipe to be welded; the flange to be welded is placed in the sinking groove and sleeved on the outer wall of the orifice of the thin-walled tube to be welded, and the depth of the sinking groove is consistent with the thickness of the flange to be welded.

2. The tooling for controlling the form and position tolerance and size of the TIG welding of the thin-walled tube and the flange according to claim 1, wherein the detachable positioning cylinder comprises: the outer wall of the two semicircular positioning plates is sleeved with a fixing sleeve.

3. The tool for controlling the form and position tolerance and the size of the TIG welding of the thin-walled tube and the flange according to claim 1, wherein the perpendicularity between the end surface of the sinking groove and the central axis of the detachable positioning cylinder is less than 0.15 mm.

4. The tool for controlling the form and position tolerance and the size of TIG welding of the thin-walled tube and the flange according to any one of claims 1 to 3, wherein the coaxiality of the sinking groove and the detachable positioning cylinder is less than phi 0.05 mm.