CN202639717U

CN202639717U - Titanium alloy bicycle frame welding fixture

Info

Publication number: CN202639717U
Application number: CN201220274855XU
Authority: CN
Inventors: 王俊萍; 卢亚锋; 周伟; 杜宇; 孙文鸿
Original assignee: TIANJIN QINGTAI SPORTS EQUIPMENT CO Ltd
Current assignee: TIANJIN QINGTAI SPORTS EQUIPMENT CO Ltd
Priority date: 2012-06-12
Filing date: 2012-06-12
Publication date: 2013-01-02
Anticipated expiration: 2022-06-12

Abstract

The utility model provides a titanium alloy bicycle frame welding fixture which comprises movable frames, a frame body, a water pump, a pipeline and a drain plug, wherein one movable frame is used for fixing a first pipe, one movable frame is used for fixing a seat post bottom bracket, one movable frame used for fixing a rear falcula seat post, the water pump is used for pressing and injecting water. Each movable frame is connected with the frame body through bolts, the first pipe movable frame can well achieve adjustment and fixation of the first pipe through a slide rail and a carving groove during assembling and welding, and the seat post bottom bracket movable frame and the rear falcula movable frame respectively and flexibly adjust the height of a rear triangle of a bicycle frame through a pin. The titanium alloy bicycle frame welding fixture can ensure that welding angles between an upper pipe and the first pipe, and between a lower pipe and the first pipe can be adjusted, achieves circulating water cooling during a welding process, well resolves the technical problem of multi-part integration welding and rapid cooling of thin-wall titanium tubing, and greatly improves welding efficiency and welding joint quality.

Description

A kind of titanium alloy cycle frame welding tooling

Technical field

What the present invention relates to is a kind of nonferrous materials processing technique field, is specifically related to a kind of titanium alloy cycle frame welding tooling.

Background technology

Along with developing by leaps and bounds of bicycle industry, modern bicycle is more and more higher to the requirement of performance, particularly the loss of weight index is had higher requirement.Titanium or titanium alloy tubing is high because of specific strength, the advantages such as corrosion resistance good, high-low temperature resistant, has been widely used in various bicycles both at home and abroad and has done the vehicle frame use.Titanium is as high activity metal, in air during melting welding easily and the element reactions such as hydrogen, oxygen, nitrogen cause the weld seam embrittlement, and the titanium thermal conductivity is low, and welding heat affected zone is wide, for the welding of the high titanium or titanium alloy thin-wall curved-surface of dimension precision requirement and angle welding difficulty especially just.Vehicle frame is the crucial load parts of bicycle, and (wall thickness 0.8～1.5mm) seamless pipe, the technique of its welding and quality are determining production efficiency and the service life of bicycle mostly to be thin-walled.For guaranteeing weldquality and performance, need to guarantee that welding position heat conduction is rapid, this has just proposed technical difficulty for welding preparation titanium alloy bicycle rack.

Cycle frame comprises that first pipe, upper pipe, lower pipe, standpipe, Seat stay, Chain stay, five-way are sat pipe and rear hook is sat eight parts of pipe, relates to the docking welding of multiple tracks girth joint and angle welding.Welding difficulty is to guarantee that the axis of tubing is in the same plane in the vehicle frame, also will avoid the stress of first welding position weld seam to concentrate the mouth of pipe docking that makes rear welding position to cause a deviation.Usually processing the docking deviation can be remedied by the mode that adopts butt welding to widen weld seam in welding, but each parts of bicycle use are thin-wall part, and titanium material thermal conductivity is low, poor thermal conductivity, then can cause the serious quality problems such as Welding bead subsidence, heat affected area expansion, plasticity degradation if widen weld seam or increase the welding passage.Parts and weld seam that the while bicycle frame relates to are many, are to guarantee welding precision, avoid the impact of the improper distortion that brings of welding procedure and welding protection equipment, should adopt as far as possible simultaneously assembling, the fixing integrally-built mode of spot welding to weld.

Hook and lower fork weld fixture apparatus behind the bicycle of CN201020608686.X design, though can efficiently realize the disposable welding of lower fork and rear hook, but the device design is complicated, and only can realize the efficient welding of vehicle frame part, still need increase assembling and welding that operation is proceeded the car load frame.The front triangular frame of bicycle welding clamping device of Chinese patent CN201020543334.0 design can simply, efficiently be realized the disposable welding of frame front triangle, but can't regulate down tube and first pipe position soldering angle, the assembling free degree and welding very flexible.

The welding of titanium or titanium alloy is different from common steel welding, and the bicycle assembly parts welding processed of domestic titanium all selects manual argon arc welding mode to implement, and must carry out under argon shield or vacuum condition, to reduce welding oxidation and welding position temperature.The vacuum condition welding cost is high, inefficiency, poor operability, for this multi-part of cycle frame, large scale structure and inapplicable.The argon shield method is used flexible, easy and simple to handle, and its shortcoming is for small-bore (Φ _In＜40mm) and the profiled parts with labyrinth be difficult to realize welding the protection at back, reduced welding quality.

Summary of the invention

For These characteristics and the shortcoming that present domestic mountain bike field titanium material is used, the object of the invention is to design a kind of simple, practical, efficient titanium alloy cycle frame one welding tooling, to improve welding quality and production efficiency.

For realizing above purpose, the utility model provides a kind of titanium alloy cycle frame welding tooling, comprise the adjustable shelf 2 for fixing first pipe, be used for the fixing adjustable shelf 4 of sitting the pipe five-way, be used for fixing rear hook and sit adjustable shelf 5 and the support body 3 of pipe, also comprise pressure water injection water pump 22,

pipeline

20,21 and

plug

16,17,18,19, above-mentioned each adjustable shelf is respectively by

bolt

10,11,12 link to each other with support body 3 along support body 3 length directions orders, change the position of the adjustable angle vehicle frame each several part between each adjustable shelf and the support body 3 by rotation, determine assembly structure, on the described adjustable shelf 2 for fixing first pipe two parallel cuttings 6 are set along its length, 7, article two, slide rail 15 is set in the middle of the cutting, wherein cutting 6, the 7th, be used for keeping the fixture of first pipe position, slide rail 15 holds first pipe and makes it move up and down to adjust first pipe 23 and upper pipe 24, soldering angle between the lower pipe 25, first pipe upper and lower side, riser top ends and five-way two have end to fill in respectively plug 16 hereby, 17,18,19, water pump 22 is connected to plug 16 by pipeline, 19.

Preferably, described for fixing sit the adjustable shelf 4 of pipe five-way and be connected fixing after hook sit pipe adjustable shelf 5 respectively by

13,14 with vehicle frame after seat pipe five-way 27 be connected the hook seat and manage 30 and be connected, rotate to adjust simultaneously the height of bicycle rack Vee formation take

bolt

11,12 as the center of circle, determine the welding position between standpipe and upper pipe, the lower pipe.

Preferably, on the described support body 3 along its length order two cuttings 8,9 are set, the cutting wire rope handling is used for fixing respectively pipe and standpipe under the cycle frame of adjusted good assembly structure.

The present invention compared with prior art has the following advantages:

1, Fixture Design of the present invention is simple in structure, and is easy and simple to handle, just can realize through the simple study of operating personnel;

2, realized that by water-circulating cooling device the welding position is cold soon, reduced the impact of heat affected area width and welding deformation, improved weldquality;

3, reduced welding sequence, welding when realizing each parts of vehicle frame.Use this frock to assemble simultaneously and weld, guaranteed welding precision, shortened manufacturing procedure and production procedure, realized the high efficiency shortened process production of cycle frame;

4, practical, the assembling free degree is large.Use this frock to produce, down tube is freely adjustable with first pipe position soldering angle, and the welding and assembling height of enough free adjustment vehicle frames, has reduced workman's operation easier, and is practical flexibly;

5, applied range can be widely used in welding, assembling and the reparation of all types of vehicle frames of titanium bicycle processed.This frock both can be used for the welding of common arch bar truck, also can be used for the welding of K shape folding stand, can also be used for the assembling of all types of vehicle frame support bodys and the weld seam reparation of product.

Description of drawings

Fig. 1 is titanium alloy cycle frame welding tooling

Fig. 2 is the titanium alloy cycle frame of using frock of the present invention and method welding

The specific embodiment

Embodiment one titanium alloy cycle frame welding tooling

Titanium alloy cycle frame welding tooling shown in Figure 1, comprise for the adjustable shelf 2 of fixing first pipe, be used for fixing adjustable shelf 5 and the support body 3 of sitting the adjustable shelf 4 of pipe five-way, sitting pipe for hook after fixing, each adjustable shelf uses respectively bolt 10,11,12 to be connected with support body 3, by rotation change

adjustable shelf

2,4,5 and support body 3 between angle, reach the position of adjusting vehicle frame support body each several part, determine the purpose of assembly structure.Wherein, cutting 6,7 and slide rail 15 is set on the adjustable shelf 2, cutting 6,7 can fix first pipe position by wire rope handling, and slide rail 15 can hold first pipe and make it move up and down to adjust soldering angle between first pipe and upper pipe, the lower pipe; Adjustable shelf 4 is connected with adjustable shelf respectively and is sat pipe and to be connected hook and to sit to manage and be connected with the five-way of vehicle frame by

13,14, rotate the adjustable shelf 4 that is used for fixing seat pipe five-way and the height of adjusting the bicycle rack Vee formation for the adjustable shelf 5 of hook seat pipe after fixing as the center of circle take

bolt

11,12 simultaneously, determine the welding position between standpipe and upper pipe, the lower pipe; Cutting 8 and 9 are set on the support body 3, and the cutting wire rope handling is used for fixing respectively pipe and standpipe under the cycle frame of adjusted good assembly structure.

Wherein, first pipe adjustable shelf by slide rail and cutting can well realize assembling, the adjustment of first pipe and fixing when welding, sit pipe five-way adjustable shelf and rear solid end and collude all height by pin flexible modulation vehicle frame Vee formation of adjustable shelf, therefore, this welding tooling can guarantee the soldering angle capable of regulating of upper, lower tube and first pipe, thereby solved the technical barrier of many one welding of thin-wall titanium tubing, increased substantially welding efficiency and weldquality.

The using method of this welding tooling may further comprise the steps:

1) will sit pipe five-way 27, rear hook 30 by

13,14 adjustable shelfs 4 at welding tooling, 5 fixing;

2) head is managed 23, upper pipe 24, standpipe 26, Seat stay 28, Chain stay 29 put on the welding tooling of horizontal positioned, rotate relative position and each the parts connecting portion of argon arc welding spot welding of each parts more than the adjusting as the center of circle take

bolt

10,11,12, each connecting portion is welded in argon arc welding successively by hand again, form weld seam a, c, d, e, f, g, h, tentatively determine vehicle support body Welding Structure;

3) lower pipe 25 is positioned on the welding tooling that level puts, regulate lower pipe 25 and first angle of managing between 23 according to the preliminary welding deformation degree of support body, and pass the rope class from cutting 6,7,8,9 and fix first pipe, lower pipe and standpipe position, adopt manual argon arc welding to be welded to connect the position, form weld seam b and i;

4) welding tooling is placed perpendicular to horizontal plane, managing upper and lower side, riser top ends and five-way two at head has end to fill in respectively plug 16,17,18,19 hereby, by water pump 22 by pipeline 20 pressure water injection in the plug 16, water circulates in support body, 21 export back water pumps by the road, adopt this moment the mode of manual argon arc welding again to add welding wire at all weld seam positions and weld, finally obtain titanium cycle frame processed.

Claims

1. titanium alloy cycle frame welding tooling, it is characterized in that: comprise the adjustable shelf (2) for fixing first pipe, be used for the fixing adjustable shelf (4) of sitting the pipe five-way, be used for fixing rear hook and sit adjustable shelf (5) and the support body (3) of pipe, also comprise pressure water injection water pump (22), pipeline (20,21) and plug (16,17,18,19), above-mentioned each adjustable shelf is respectively by bolt (10,11,12) link to each other with support body (3) along support body (3) length direction order, change the position of the adjustable angle vehicle frame each several part between each adjustable shelf and the support body (3) by rotation, determine assembly structure, on the described adjustable shelf (2) for fixing first pipe two parallel cuttings (6 are set along its length, 7), article two, slide rail (15) is set in the middle of the cutting, wherein cutting (6,7) be the fixture that keeps first pipe position, slide rail (15) holds first pipe and makes it move up and down to adjust first pipe (23) and upper pipe (24), soldering angle between the lower pipe (25), first pipe upper and lower side, riser top ends and five-way two have end to fill in respectively plug (16 hereby, 17,18,19), water pump (22) is connected to plug (16 by pipeline, 19).

2. titanium alloy cycle frame welding tooling as claimed in claim 1, it is characterized in that: described for fixing sit the adjustable shelf (4) of pipe five-way and be connected fixing after hook sit pipe adjustable shelf (5) respectively the seat pipe five-way (27) by pin (13,14) and vehicle frame be connected the hook seat and manage (30) and be connected, rotate to adjust simultaneously the height of bicycle rack Vee formation take bolt (11,12) as the center of circle, determine the welding position between standpipe and upper pipe, the lower pipe.

3. titanium alloy cycle frame welding tooling as claimed in claim 1, it is characterized in that: on the described support body (3) along its length order two cuttings (8,9) are set, the cutting wire rope handling is used for fixing respectively pipe and standpipe under the cycle frame of adjusted good assembly structure.