CN105215594B

CN105215594B - A kind of beam bending bicycle sample vehicle frame processing method

Info

Publication number: CN105215594B
Application number: CN201510625753.6A
Authority: CN
Inventors: 王亚军; 彭天; 彭天一
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2015-09-28
Filing date: 2015-09-28
Publication date: 2017-03-01
Anticipated expiration: 2035-09-28
Also published as: CN105215594A

Abstract

The invention discloses a kind of beam bending bicycle sample vehicle frame processing method, it is characterized in that, first individually complete the independent processing of vehicle frame proterosoma, complete the independent processing to upper beam pipe after lower beam pipe after two and two, complete the independent processing of fuel tank fore-stock and cushion rack, after the completion of elastic axis journal stirrup, the independent processing of rear elastic axis, fuel tank after-poppet and car body covering journal stirrup；Complete seat cushion lock support and hood journal stirrup is individually processed；By weld jig, above-mentioned each component is positioned again, then disposably complete welding and obtain beam bending bicycle sample vehicle frame by connected for each component.The present invention can simplify assemble welding operation, has simple to operate, with low cost, and the advantages of the trial-production of beam bending bicycle sample can be facilitated to adjust.

Description

A kind of beam bending bicycle sample vehicle frame processing method

Technical field

The present invention relates to frame of motorcycle manufacture field, in particular to a kind of beam bending bicycle sample vehicle frame processing method.

Background technology

It is to bend with shape in front of seat cushion under right forward-backward algorithm that bent-beam motorcycle refers in the motorcycle girder in front of seat cushion Become the motor cycle type in a downward space.Bent-beam motorcycle is modal motorcycle now, and in motorcycle family, it holds Long property with simple to operation the features such as firmly get liking of consumer.Bent-beam motorcycle, as a economical and practical vehicle, becomes For all suitable popular car of various consumption stratas.Motorcycle, in R＆D process, generally requires first R ＆ D design and goes out sample simultaneously Product, carries out testing inspection, to ensure the dependable with function of final finished.

In the trendy bent-beam motorcycle of a model LF110, its body frame structure for automotive is included positioned at anterior vehicle frame first half Body structure and the back rest tubular construction being located at rear portion, described vehicle frame proterosoma structure mainly includes the standpipe positioned at front end, after standpipe Laterally connect the overall main-beam pipe to back lower place bending afterwards, main-beam pipe rear end is also fixedly welded with an electromotor and hangs installation Plate, electromotor hangs the symmetrical cover type structure of installing plate and upper end covers and is overlapped on main-beam pipe rear end and welds solid Fixed, electromotor hangs to extend transversely through about in the middle part of installing plate and bottom fork axis is fixedly installed；Back rest tubular construction mainly includes two Rear upper beam pipe and two rear lower beam pipes being set up in parallel that left and right is set up in parallel, rear upper beam pipe front end overlap joint is weldingly fixed on girder Pipe postmedian, the oblique back upper place in rear end is obliquely installed, and rear lower beam pipe front end overlap joint is weldingly fixed on electromotor and hangs on installing plate, Laminating after rear end extends obliquely is weldingly fixed on lower surface after rear upper beam pipe；In addition it is also necessary to consider after two during processing Between upper beam pipe, forward position is welded and fixed an inverted U-shaped fuel tank fore-stock and a cushion rack from front to back successively；Two Elastic axis after upper beam pipe rear positions also need to install after root, after rear elastic axis extends transversely through that being fixed on raises up and is connected to two On elastic axis journal stirrup after two of upper beam pipe rear upper surface, after two, elastic axis journal stirrup upper end also extends transversely through and is fixed with one Elastic axis journal stirrup web beam afterwards, rear elastic axis journal stirrup web beam two ends are exposed rear elastic axis journal stirrup and are each welded forward solid Surely there is a fuel tank after-poppet, and be successively welded with a car body covering journal stirrup；After two, upper beam pipe tail end is also upwards It is welded with the seat cushion lock support that an entirety is in inverted U-shaped frame structure, seat cushion lock support is each side welded and fixed one Individual hood journal stirrup.

The frame of curved beam motorcycle of said structure, when motorcycle research and development sample produces, typically completes vehicle frame proterosoma structure Processing after, first complete back rest tubular construction being individually welded and fixed of each adnexa thereon one by one, finally integral solder is integrated shape again Become vehicle frame.So, there is operation various, complex operation, the defect of high cost.Especially because sample produce usually need right The little structure such as Accessory Members of some local is adjusted, and so, adjustment every time is all realized using the weld jig of fixed structure Welding, greatly increases cost, constrains the expansion of sample research and development.

Content of the invention

For above-mentioned the deficiencies in the prior art, the technical problem to be solved is：How to provide one kind simple Chemical industry sequence is so as to simple to operate, with low cost, and can conveniently manufacture experimently further adjustment beam bending bicycle sample vehicle frame plus Work method.

In order to solve above-mentioned technical problem, present invention employs following technical scheme：When described in scheme, with its installation State after on vehicle frame describes benchmark for orientation.

A kind of beam bending bicycle sample vehicle frame processing method is it is characterised in that first individually complete individually adding of vehicle frame proterosoma Work, completes the independent processing to upper beam pipe after lower beam pipe after two and two, completes the independent of fuel tank fore-stock and cushion rack Processing, after the completion of elastic axis journal stirrup, the independent processing of rear elastic axis, fuel tank after-poppet and car body covering journal stirrup；Complete seat cushion Lock support and hood journal stirrup are individually processed；By weld jig, above-mentioned each component is positioned again, then disposably complete to weld Each component is connected and obtains beam bending bicycle sample vehicle frame.

So, this method is processed using first independent, then entirety positions, and then the disposable mode welded, greatly simplifies Operation, saves cost.

As optimization, described weld jig includes upper surface and all side surfaces be all disposed with according to constant spacing array some The three-dimensional mounting platform of installing hole, and it is arranged on vehicle frame proterosoma positioning fixture structure on three-dimensional mounting platform, back rest pipe Anterior positioning welding clamp structure, back rest pipe rear portion positioning welding clamp structure and back rest pipe afterbody positioning welding clamp structure； Described vehicle frame proterosoma positioning fixture structure is used for realizing the positioning to vehicle frame proterosoma；Described back rest pipe front portion positioning welding folder Lamps structure is used for realizing the positioning of anterior to rear lower beam pipe, rear upper beam pipe front portion, fuel tank fore-stock and cushion rack；The described back rest Pipe rear portion positioning welding clamp structure is used for realizing to rear lower beam pipe rear portion, rear elastic axis journal stirrup, rear elastic axis, fuel tank after-poppet Positioning with car body covering journal stirrup；Described back rest pipe afterbody positioning welding clamp structure be used for realize to rear upper beam pipe rear portion, Seat cushion lock support and the positioning of hood journal stirrup.

So, above-mentioned weld jig, can realize to vehicle frame proterosoma, back rest tubular construction and back rest tubular construction simultaneously Between Set and Positioning between upper each Accessory Members is so as to can directly disposably be realized to each component using welding gun after positioning It is welded and fixed.Make each component relative-position error reliability and welding operation is convenient and swift, save cost.

As optimization, described vehicle frame proterosoma positioning fixture structure includes standpipe positioning component and bottom fork axis positioning component；

Described standpipe positioning component includes the standpipe positioning standard square chest of the rectangular body structure of entirety, described standpipe Positioning with each side of standard square chest all according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures arrangement There are some installing holes, standpipe positioning standard square chest is by being bolted to three-dimensional mounting platform front Middle face and upwardly extending Setting, described standpipe positioning component also includes a standpipe positioning standard being fixed on standpipe positioning standard square chest upper surface Protractor, described standpipe positioning standard angle device includes each having the fixed block of a hinged end and a folding end and turns The hinged end of motion block, fixed block and moving block is rotatably hinged and is provided with for realizing turning of rotational angle positioning in hinged place Dynamic angle alignment pin, described fixed block with moving block all according to three-dimensional mounting platform on the consistent spacing of installing hole and hole Footpath array is disposed with some installing holes, and the fixed block folding end of described standpipe positioning standard angle device is arranged forward and leaned on bolt It is horizontally fixed on standpipe positioning standard square chest upper surface, the described standpipe positioning moving block upper surface middle part of standard angle device It is fixedly installed standpipe positioning round table, described standpipe positioning round table diameter and lower riser end external diameter coupling and standpipe setting circle upwards At platform axle center coaxial on be provided with standpipe locating dowel with standpipe internal diameter coupling, standpipe locating dowel upper end clearance fit has disk Shape for positioning rear profile tube compression standpipe be fixed block；

Described bottom fork axis positioning component includes the bottom fork axis positioning support angle bar of two entirety frame structure in a rectangular trapezoid, On each side of described bottom fork axis positioning support angle bar all according to three-dimensional mounting platform on the consistent spacing of installing hole and aperture Array is disposed with some installing holes, and bottom fork axis positioning support angle bar lower end is by being bolted in the middle part of three-dimensional mounting platform and left and right It is oppositely arranged；Bottom fork axis positioning support angle bar hypotenuse is arranged backward and medial surface is fixedly installed the bottom fork axis positioning extending forward Block, between two bottom fork axis locating pieces, distance and electromotor hang installing plate left and right sides width coupling, two bottom fork axis positioning The front upper end of block is provided with bottom fork axis locating slot and for realizing the positioning to bottom fork axis two ends.

So, during use, the angle first adjusting standpipe positioning standard angle device opens up into required angle, Ran Houzai Standpipe is inserted into standpipe locating dowel makes its lower end and standpipe positioning round table abut the positioning supporting and realizing standpipe, then by vertical Pipe is fixed block compression standpipe upper end and realizes standpipe is completely fixed；Then the electromotor at vehicle frame proterosoma rear portion is hung Installing plate drops between two bottom fork axis positioning support angle bar, and electromotor is hung, and that the installing plate left and right sides exposes is flat Fork shaft end drops into the interior positioning realized to bottom fork axis two ends of bottom fork axis locating slot on bottom fork axis locating piece.So, by three The mode of point location achieves the positioning clamping to vehicle frame proterosoma with simple structure.Ensure that the reliability of follow-up welding, make Each component relative-position error reliability and welding operation is convenient and swift, saves cost.Simultaneously as employ standard square chest, Realize linking between support angle, standard angle device and three-dimensional mounting platform and other non-standard align members and coordinate, make Obtaining each location structure and being flexibly and easily adjusted as needed installing needs to adjust so as to be highly suitable for sample trial-production Use during whole each component partial member position, dramatically saves on R＆D costs.Meanwhile, the bottom fork axis positioning support angle bar of setting The follow-up installation realized to back rest pipe and the assembly of adnexa positioning thereon can also be conveniently installed, beneficial to save space and simplification Cost.

As optimization, described back rest pipe front portion positioning welding clamp structure includes rear upper beam pipe front portion positioning component, fuel tank Fore-stock positioning component, cushion rack positioning component and rear lower beam pipe front portion positioning component；

The rear upper beam pipe that described rear upper beam pipe front portion positioning component includes two entirety frame structure in a rectangular trapezoid is anterior Positioning support angle bar, on each side of positioning support angle bar of described rear upper beam pipe front portion all according to three-dimensional mounting platform on installation The consistent spacing in hole and array of apertures are disposed with some installing holes, and rear upper beam pipe front portion positioning support angle bar lower end is fixed by bolt In the middle part of three-dimensional mounting platform and left and right is oppositely arranged；Upper beam pipe front portion positioning support angle bar hypotenuse is arranged and leading flank backward afterwards Upper beam pipe front portion localization criteria protractor after being fixedly connected with one, described rear upper beam pipe front portion localization criteria protractor includes respectively From the fixed block with a hinged end and a folding end and moving block, the hinged end of fixed block and moving block is rotatably hinged And hinged place is provided with the rotational angle alignment pin for realizing rotational angle positioning, described fixed block and moving block are all pressed According to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, before described rear upper beam pipe The fixed block of portion's positioning standard angle device is vertically arranged and folding end is downwards and by being horizontally fixed on before rear upper beam pipe by bolt Portion's positioning support angle bar leading flank；Laterally it is fixedly connected between the moving block of upper beam pipe front portion positioning standard angle device after two There is a lateral connection block, before upper beam pipe after upper beam pipe forward position is provided with two after corresponding two of lateral connection block upper surface Portion's positioning boss, rear upper beam pipe front portion positioning boss medial surface is provided with for outer downside laminating anterior with rear upper beam pipe Realize the rear upper beam pipe front portion positioning step of positioning；

It is anterior that described fuel tank fore-stock positioning component includes upper beam pipe after described lateral connection block upper surface is located at two Extend between positioning boss and forward the fuel tank fore-stock location division of formation, described fuel tank fore-stock location division upper surface is arranged There is a fuel tank fore-stock positioning boss, fuel tank fore-stock positioning boss upper surface is used for and fuel tank fore-stock middle lower surface patch Close and realize positioning, on described fuel tank fore-stock positioning boss, the installing hole of corresponding fuel tank fore-stock is provided with fuel tank fore-stock positioning Hole and fuel tank fore-stock fastening screw for realizing to the fixation after fuel tank fore-stock positioning；

It is anterior fixed that described cushion rack positioning component includes upper beam pipe after described lateral connection block upper surface is located at two Between the boss of the position and cushion rack location division that extends rearwardly to form, cushion rack location division upper surface is provided with two upwards Cushion rack locating dowel, two cushion rack locating dowel upper ends are provided with that to install in the holes real for inserting on cushion rack two The cushion rack positioning round table now positioning；

The rear lower beam pipe that described rear lower beam pipe front portion positioning component includes two entirety frame structure in a rectangular trapezoid is anterior Positioning support angle bar, on each side of positioning support angle bar of described rear lower beam pipe front portion all according to three-dimensional mounting platform on installation The consistent spacing in hole and array of apertures are disposed with some installing holes, and rear lower beam pipe front portion positioning support angle bar lower end is fixed by bolt In three-dimensional mounting platform postmedian and left and right is oppositely arranged；Lower beam pipe front portion positioning support angle bar hypotenuse is arranged and front side backward afterwards Face be fixedly connected with one after lower beam pipe front portion localization criteria protractor, described rear lower beam pipe front portion localization criteria protractor includes Each there is fixed block and the moving block at a hinged end and a folding end, the hinged end of fixed block and moving block rotatably cuts with scissors Connect and hinged place is provided with the rotational angle alignment pin for realizing rotational angle positioning, on described fixed block and moving block all According to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, described rear lower beam pipe The fixed block of anterior positioning standard angle device is vertically arranged and folding end is downwards and by being horizontally fixed on rear lower beam pipe by bolt Anterior positioning support angle bar leading flank；After two, lower beam pipe is anterior positions laterally fixing between the moving block using standard angle device company Lower beam pipe front portion positioning contiguous block after being connected to one, rear lower beam pipe anterior positioning underbeam after corresponding two of contiguous block upper surface Pipe forward position be provided with two after lower beam pipe front portion positioning boss, rear lower beam pipe front portion positioning boss is provided with two Snap in the rear lower beam pipe front portion locating slot realizing positioning for rear lower beam pipe forward position.

So, during use, first adjusting rear upper beam pipe front portion localization criteria protractor opening angle makes it rotate Block direction Parallel with rear upper beam pipe, then make upper beam pipe front end after two fixed with the main-beam pipe postmedian installation site laminating after positioning Position, then so that in upper beam pipe front portion positioning step after upper beam pipe front waist section drops into two afterwards, realizing anterior to rear upper beam pipe The positioning of section；Fuel tank fore-stock medium position is fitted on fuel tank fore-stock positioning boss, two ends leg fits to rear upper beam Positioning is realized on corresponding installation site on pipe, then leans on the installing hole of latch insertion fuel tank fore-stock and fuel tank fore-stock location hole real Now to the fixation after fuel tank fore-stock positioning；Again two installing holes on cushion rack are nested into cushion rack locating dowel upper end Positioning round table on, and make cushion rack two ends leg fit on rear upper beam pipe corresponding installation site to realize to cushion rack Positioning；The opening angle adjusting rear lower beam pipe front portion localization criteria protractor again is so that its moving block and rear lower beam pipe are put down OK, then the electromotor behind rear lower beam pipe front end and positioning is hung corresponding installation site laminating on installing plate, and after making under Beam pipe front portion drops into the positioning realized in the locating slot of corresponding rear lower beam pipe front portion to rear lower beam pipe forward position.So, Achieve the positioning to back rest pipe front waist section and each Accessory Members thereon, disposably can be realized to rear upper beam pipe using welding gun And afterwards between lower beam pipe and vehicle frame proterosoma, and the welding between fuel tank fore-stock and cushion rack and rear upper beam pipe is solid Fixed.Make each component relative-position error reliability and welding operation is convenient and swift, save cost.Simultaneously as employing supporting Linking and cooperation is realized so that each between angle bar, standard angle device and three-dimensional mounting platform and other non-standard align members Location structure can flexibly and easily be adjusted installing as needed needs adjustment each so as to be highly suitable for sample trial-production Use during component partial member position, dramatically saves on R＆D costs.Meanwhile, wherein partly non-standard align member can be same The positioning to multiple components for the Shi Shixian, structure setting is ingenious and precision that ensure that mutual alignment.

As optimization, described back rest pipe rear portion positioning welding clamp structure include rear lower beam pipe rear portion positioning component, after subtract Shake axle and rear elastic axis journal stirrup positioning component, fuel tank after-poppet positioning component and car body covering journal stirrup positioning component；

Described rear lower beam pipe rear portion positioning component includes the rear lower beam pipe rear portion of two entirety frame structure in a rectangular trapezoid Positioning support angle bar, on each side of described rear lower beam pipe rear portion positioning support angle bar all according to three-dimensional mounting platform on installation The consistent spacing in hole and array of apertures are disposed with some installing holes, and rear lower beam pipe rear portion positioning support angle bar lower end is fixed by bolt In three-dimensional mounting platform postmedian and left and right is oppositely arranged；Positioning support angle bar hypotenuse in lower beam pipe rear portion is arranged and inner side backward afterwards Face upper position be fixedly connected with one after lower beam pipe rear portion locating piece, described rear lower beam pipe rear portion locating piece is provided with for Embed the rear lower beam pipe rear portion locating slot of positioning for rear lower beam pipe rear portion；

Described rear elastic axis and rear elastic axis journal stirrup positioning component include two be separately fixed at two after lower beam pipe rear portion The rear elastic axis locating piece of positioning support angle bar top leading flank, rear elastic axis locating piece front end inwardly front bending extension and Front end upper side be provided with rear elastic axis locating slot for realize positioning to rear elastic axis and rear elastic axis journal stirrup；

Described car body covering journal stirrup positioning component include two be separately fixed at two after lower beam pipe rear portion positioning support Angle bar top is located at the car body covering journal stirrup locating piece of the medial surface of position on rear elastic axis locating piece, and car body covering props up Ear locating piece have one forward extend and lower surface be used for for car body covering journal stirrup lower surface laminating positioning car body cover Part journal stirrup location division, the installing hole that car body covering journal stirrup positions on the corresponding car body covering of lower surface is provided with car body and covers Part journal stirrup positioning bolt hole, car body covering journal stirrup positioning bolt hole is used for screwing in by bolt to be realized to car body covering journal stirrup Positioning and clamping；

Described fuel tank after-poppet positioning component include two be symmetrically arranged and the fuel tank of overall L-shaped frame structure after Support positioning supports angle bar, two fuel tank after-poppets positioning support on each sides of angle bar all according to three-dimensional mounting platform on peace The consistent spacing in dress hole and array of apertures be disposed with some installing holes and be respectively arranged at two after lower beam pipe rear portion positioning support Angle bar anterior position；Two fuel tank after-poppet positioning support angle bar medial surface to be respectively fixedly installed a fuel tank after-poppet positioning Block, fuel tank after-poppet locating piece have one extend rearwardly and upwardly and lower surface to be used for the laminating of oil feeding reservoirs after-poppet upper surface fixed The fuel tank after-poppet location division of position, the installing hole that fuel tank after-poppet positions on the corresponding fuel tank after-poppet of lower surface is provided with oil Case after-poppet positioning bolt hole, fuel tank after-poppet positioning bolt hole is used for screwing in, by bolt, the positioning realized to fuel tank after-poppet And clamping.

So, during use, first oriented for front portion rear lower beam pipe rear portion is embedded in the locating slot of rear lower beam pipe rear portion, real The now positioning to rear lower beam pipe；Again rear elastic axis is inserted in the rear damping axis hole of elastic axis journal stirrup after two, after adjusting Elastic axis journal stirrup right position so that corresponding installation on upper beam pipe after elastic axis journal stirrup lower end fits to afterwards on rear elastic axis Position, and rear elastic axis two ends are dropped in rear elastic axis locating slot, realize rear elastic axis and rear elastic axis are propped up simultaneously The positioning of ear；Then car body covering journal stirrup front underside is fitted to corresponding installation site, rear end upper table on rear elastic axis Face and car body covering journal stirrup position after lower surface is fitted and screw in positioning and the lock realizing car body covering journal stirrup by bolt Tightly；Will corresponding installation site laminating on fuel tank after-poppet rear end and rear elastic axis, and make after its front end upper surface and fuel tank Frame positions lower surface laminating and leans on bolt to screw in positioning and the locking realizing fuel tank after-poppet again.So, it is achieved that to the back rest The positioning of pipe rear section and thereon each Accessory Members, can realize the welding to Accessory Members thereon admittedly using welding gun is disposable Fixed.Make each component relative-position error reliability and welding operation is convenient and swift, save cost.Simultaneously as employing supporting Linking and cooperation is realized so that each between angle bar, standard angle device and three-dimensional mounting platform and other non-standard align members Location structure can flexibly and easily be adjusted installing as needed needs adjustment each so as to be highly suitable for sample trial-production Use during component partial member position, dramatically saves on R＆D costs.Meanwhile, wherein partly non-standard align member can be same The positioning to multiple components for the Shi Shixian, structure setting is ingenious and precision that ensure that mutual alignment.

As optimization, described back rest pipe afterbody positioning welding clamp structure includes rear upper beam pipe rear portion positioning component, seat cushion Lock support positioning component and hood journal stirrup positioning component；

The rear upper beam pipe rear portion positioning that described rear upper beam pipe rear portion positioning component includes the rectangular body structure of entirety is used Standard square chest, described rear upper beam pipe rear portion positioning with each side of standard square chest all according to three-dimensional mounting platform on installing hole Consistent spacing and array of apertures are disposed with some installing holes, and rear upper beam pipe rear portion positioning standard square chest is by being bolted to three Dimension mounting platform rear end medium position, described rear upper beam pipe rear portion positioning component also include one be secured transverse to rear upper beam pipe after Portion's positioning upper beam pipe rear portion locating piece after of standard square chest front side surface upper position, described rear upper beam pipe rear portion positioning Block front upper surface position left and right sides correspondence raises up and is formed with rear upper beam pipe rear portion positioning boss, and rear upper beam pipe rear portion is fixed Rear upper beam pipe rear portion locating slot for embedding positioning for rear upper beam pipe rear portion is provided with the boss of position；

Described cushion lock support positioning component includes being symmetrical set on the positioning standard square chest of rear upper beam pipe rear portion Two seat cushion lock support locating dowels of end face, seat cushion lock support locating dowel upper end is provided with seat cushion lock support positioning boss and is used for Positioning is realized in two installing hole insertions for seat cushion lock support afterbody；

Described hood journal stirrup positioning component includes being symmetrical set about the positioning standard square chest of rear upper beam pipe rear portion Two hood journal stirrup positioning angle bars of side upper end position, hood journal stirrup positioning angle bar integrally L-shaped frame structure and each side Upper all according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, hood journal stirrup Positioning angle bar bottom have a horizontal expansion section backward and by bolt fixing after before the positioning standard square chest of upper beam pipe rear portion Side, on hood journal stirrup positioning angle bar medial surface, evagination is provided with hood journal stirrup locating piece, corresponding hood on hood journal stirrup locating piece The installing hole of journal stirrup is provided with tapped through hole and realizes the positioning to hood journal stirrup and clamping by bolt screw-in.

So, during use, the rear portion that front portion has first completed the rear upper beam pipe of positioning drops into corresponding rear upper beam pipe In the locating slot of rear portion, realize the positioning to rear upper beam pipe rear portion；Then it is right on rear upper beam pipe to fit to cushion lock pedestal lower end The installation site answered, and two installing holes of upper end are nested into determining of seat cushion lock support locating dowel upper end after making seat cushion lock support On the boss of position, realize the positioning to seat cushion lock support；Again two hood journal stirrup the inners are fitted to the seat cushion lock support after positioning On corresponding installation site, and make two hood journal stirrup outer ends and hood journal stirrup locating piece laminating, then by bolt screw in hood Tapped through hole on installing hole on journal stirrup and hood journal stirrup locating piece, realizes positioning and locking to two hood journal stirrups.This Sample, is achieved that the positioning to rear upper beam pipe afterbody and each Accessory Members thereon, disposably can be realized to it using welding gun Being welded and fixed of upper Accessory Members.Make each component relative-position error reliability and welding operation is convenient and swift, save cost.With When, realize rank due to employing between support angle, standard square chest and three-dimensional mounting platform and other non-standard align members Connect and coordinate so that each location structure can flexibly and easily be adjusted installing so as to be highly suitable for trying as needed Sample trial-production needs to adjust and uses during each component partial member position, dramatically saves on R＆D costs.Meanwhile, wherein partly nonstandard Quasi- align member can realize the positioning to multiple components simultaneously, and structure setting is ingenious and precision that ensure that mutual alignment.

In sum, the present invention can simplify assemble welding operation, has simple to operate, with low cost, and can facilitate The advantages of trial-production of beam bending bicycle sample adjusts.

Brief description

Fig. 1 is the side view of the weld jig adopting in best embodiment of the present invention.

The top view of the weld jig that Fig. 2 adopts for best embodiment of the present invention.

Side view when Fig. 3 uses for the weld jig that best embodiment of the present invention adopts.

Top view when Fig. 4 uses for the weld jig that best embodiment of the present invention adopts.

Specific embodiment

With reference to optimum embodiment and accompanying drawing, the present invention is described in further detail.When described in scheme, with State after it is arranged on vehicle frame describes benchmark for orientation.Vehicle frame described in scheme is model LF110 described in background technology Bent-beam motorcycle frame.

Optimum embodiment：A kind of beam bending bicycle sample vehicle frame processing method, it is characterized by, before first individually completing vehicle frame The independent processing of halfbody, completes the independent processing to upper beam pipe after lower beam pipe after two and two, completes fuel tank fore-stock and seat The independent processing of pad support, after the completion of elastic axis journal stirrup, rear elastic axis, fuel tank after-poppet and car body covering journal stirrup individually plus Work；Complete seat cushion lock support and hood journal stirrup is individually processed；Above-mentioned each component is positioned, then once by weld jig again Property complete weld by each component be connected obtain beam bending bicycle sample vehicle frame.

When this method is implemented, first obtain a kind of weld jig, after then each component being positioned using this weld jig, Welded again.As Figure 1-4, described weld jig includes upper surface and all side surfaces are all arranged according to constant spacing array There is the three-dimensional mounting platform 1 of some installing holes, and the vehicle frame proterosoma locating clip being arranged on three-dimensional mounting platform 1 is signed an undertaking Structure, back rest pipe front portion positioning welding clamp structure, back rest pipe rear portion positioning welding clamp structure and back rest pipe afterbody positioning welding Clamp structure；Described vehicle frame proterosoma positioning fixture structure is used for realizing the positioning to vehicle frame proterosoma；Described back rest pipe is anterior Positioning welding clamp structure is used for realizing anterior to rear lower beam pipe, rear upper beam pipe front portion, fuel tank fore-stock 2 and cushion rack 3 Positioning；Described back rest pipe rear portion positioning welding clamp structure be used for realize to rear lower beam pipe rear portion, rear elastic axis journal stirrup 4, after subtract The positioning of shake axle 5, fuel tank after-poppet 6 and car body covering journal stirrup 7；Described back rest pipe afterbody positioning welding clamp structure is used for real The now positioning to rear upper beam pipe rear portion, seat cushion lock support 8 and hood journal stirrup 9.

So, the weld jig of such scheme, can realize to vehicle frame proterosoma, back rest tubular construction and back rest pipe simultaneously Set and Positioning between each Accessory Members in structure so as to can directly adopt after positioning welding gun disposable realize to each component it Between be welded and fixed.Make each component relative-position error reliability and welding operation is convenient and swift, save cost.

Wherein, described vehicle frame proterosoma positioning fixture structure includes standpipe positioning component and bottom fork axis positioning component；

Described standpipe positioning component includes the standpipe positioning standard square chest 10 of the rectangular body structure of entirety, described vertical Pipe positioning with each side of standard square chest 10 all according to three-dimensional mounting platform 1 on the consistent spacing of installing hole and array of apertures It is disposed with some installing holes, standpipe positioning standard square chest 10 is by being bolted to three-dimensional mounting platform 1 front Middle face simultaneously Upwardly extend setting, described standpipe positioning component also includes a standpipe being fixed on standpipe positioning standard square chest 10 upper surface Positioning standard angle device 11, described standpipe positioning standard angle device 11 includes each thering is a hinged end and a folding The fixed block at end and moving block, the hinged end of fixed block and moving block is rotatably hinged and is provided with for realizing turning in hinged place The rotational angle alignment pin of dynamic angle positioning, on described fixed block and moving block all according to three-dimensional mounting platform on installing hole Consistent spacing and array of apertures are disposed with some installing holes, the described standpipe positioning fixed block folding end of standard angle device 11 Arrange forward and be horizontally fixed on standpipe positioning standard square chest 10 upper surface by bolt, described standpipe positioning uses standard angle device 11 moving block upper surface middle part is fixedly installed standpipe positioning round table 12, described standpipe positioning round table 12 diameter and standpipe upwards At lower end external diameter coupling and standpipe positioning round table axle center coaxial on be provided with standpipe locating dowel 13 with standpipe internal diameter coupling, stand Pipe locating dowel 13 upper end clearance fit has the discoidal standpipe for compressing to positioning rear profile tube to be fixed block 14；Specifically real Shi Shi, standpipe is fixed block 14 and is screwed at the axle center of standpipe locating dowel top one by the threaded post arranging along its axis Individual screw thread in the hole, realizes standpipe in the way of by screwing by screw thread male screw and is fixed the compression to positioning rear profile tube for the block, Structure is simple and compresses convenient to operation.

Described bottom fork axis positioning component includes the bottom fork axis positioning support angle bar of two entirety frame structure in a rectangular trapezoid 15, on each side of described bottom fork axis positioning support angle bar 15 all according to three-dimensional mounting platform on the consistent spacing of installing hole and Array of apertures is disposed with some installing holes, and bottom fork axis positioning support angle bar 15 lower end is by being bolted in the middle part of three-dimensional mounting platform And left and right is oppositely arranged；Bottom fork axis positioning support angle bar 15 hypotenuse is arranged backward and medial surface is fixedly installed extend forward flat Fork shaft locating piece 16, between two bottom fork axis locating pieces 16, distance and electromotor hang installing plate left and right sides width and mate, and two The front upper end of individual bottom fork axis locating piece 16 is provided with bottom fork axis locating slot and for realizing the positioning to bottom fork axis two ends.

Wherein, described back rest pipe front portion positioning welding clamp structure includes rear upper beam pipe front portion positioning component, before fuel tank Frame positioning component, cushion rack positioning component and rear lower beam pipe front portion positioning component；

The rear upper beam pipe that described rear upper beam pipe front portion positioning component includes two entirety frame structure in a rectangular trapezoid is anterior Positioning support angle bar, on each side of positioning support angle bar of described rear upper beam pipe front portion all according to three-dimensional mounting platform on installation The consistent spacing in hole and array of apertures are disposed with some installing holes, and rear upper beam pipe front portion positioning support angle bar lower end is fixed by bolt At three-dimensional mounting platform 1 middle part and left and right is oppositely arranged（When being embodied as, described rear upper beam pipe front portion positioning support angle bar and front The bottom fork axis positioning support angle bar 15 stated is same component, and with more efficient dexterously utilization space, saving member simultaneously reduces into This）；Afterwards upper beam pipe front portion positioning support angle bar hypotenuse arrange backward and leading flank be fixedly connected with one after upper beam pipe anterior fixed Position standard angle device 17, described rear upper beam pipe front portion localization criteria protractor 17 include each there is a hinged end and one open Close fixed block and the moving block at end, the hinged end of fixed block and moving block is rotatably hinged and is provided with for realizing in hinged place Rotational angle positioning rotational angle alignment pin, on described fixed block and moving block all according to three-dimensional mounting platform 1 on peace The consistent spacing in dress hole and array of apertures are disposed with some installing holes, and described rear upper beam pipe is anterior to be positioned with standard angle device 17 Fixed block is vertically arranged and folding end is downwards and by being horizontally fixed on rear upper beam pipe front portion positioning support angle bar leading flank by bolt； Laterally it is fixedly connected with a lateral connection block 18 between the moving block of upper beam pipe front portion positioning standard angle device 17 after two, Upper beam pipe front portion positioning boss 19 after upper beam pipe forward position is provided with two after corresponding two of lateral connection block 18 upper surface, Upper beam pipe front portion positioning boss 19 medial surface is provided with and realizes positioning for outer downside laminating anterior with rear upper beam pipe afterwards Upper beam pipe front portion positioning step afterwards；

It is anterior that described fuel tank fore-stock positioning component includes upper beam pipe after described lateral connection block upper surface is located at two Extend between the 19 of positioning boss and forward the fuel tank fore-stock location division of formation, described fuel tank fore-stock location division upper surface sets It is equipped with a fuel tank fore-stock positioning boss 20, fuel tank fore-stock positioning boss 20 upper surface is used for and subordinate in fuel tank fore-stock Positioning is realized in surface laminating, before on described fuel tank fore-stock positioning boss 20, the installing hole of corresponding fuel tank fore-stock is provided with fuel tank Rack positioning hole and fuel tank fore-stock fastening screw 21 for realizing to the fixation after fuel tank fore-stock positioning；

It is anterior fixed that described cushion rack positioning component includes upper beam pipe after described lateral connection block upper surface is located at two Between the position boss 19 and cushion rack location division that extends rearwardly to form, cushion rack location division upper surface be provided with two to On cushion rack locating dowel 22, two cushion rack locating dowel 22 upper ends are provided with for inserting two installations on cushion rack In the hole realizes the cushion rack positioning round table of positioning；

The rear lower beam pipe that described rear lower beam pipe front portion positioning component includes two entirety frame structure in a rectangular trapezoid is anterior Positioning support angle bar 23, on each side of positioning support angle bar 23 of described rear lower beam pipe front portion all according to three-dimensional mounting platform on The consistent spacing of installing hole and array of apertures are disposed with some installing holes, and spiral shell is leaned in rear lower beam pipe front portion positioning support angle bar 23 lower end Bolt is fixed on three-dimensional mounting platform postmedian and left and right is oppositely arranged；Lower beam pipe front portion positioning support angle bar 23 hypotenuse cloth backward afterwards Put and leading flank be fixedly connected with one after lower beam pipe front portion localization criteria protractor 24, described rear lower beam pipe front portion localization criteria Protractor 24 includes each having fixed block and the moving block at a hinged end and a folding end, the hinge of fixed block and moving block Connect and hold rotatably hinged and hinged place is provided with the rotational angle alignment pin for realizing rotational angle positioning, described fixed block With on moving block all according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, The fixed block of described rear lower beam pipe front portion positioning standard angle device 24 is vertically arranged and folding end is downwards and by by bolt level It is fixed on rear lower beam pipe front portion positioning support angle bar 23 leading flank；The anterior positioning of lower beam pipe turning with standard angle device 24 after two Lower beam pipe front portion positioning contiguous block 25 after being laterally fixedly connected with one between motion block, rear lower beam pipe front portion positioning contiguous block Lower beam pipe front portion positioning boss 26 after lower beam pipe forward position is provided with two after corresponding two of 25 upper surfaces, before rear lower beam pipe The rear lower beam pipe forward position of two confessions is provided with portion's positioning boss 26 and snaps in the rear lower beam pipe front portion locating slot realizing positioning.

Wherein, described back rest pipe rear portion positioning welding clamp structure includes rear lower beam pipe rear portion positioning component, rear elastic axis And rear elastic axis journal stirrup positioning component, fuel tank after-poppet positioning component and car body covering journal stirrup positioning component；

Described rear lower beam pipe rear portion positioning component includes the rear lower beam pipe rear portion of two entirety frame structure in a rectangular trapezoid Positioning support angle bar, on each side of described rear lower beam pipe rear portion positioning support angle bar all according to three-dimensional mounting platform on installation The consistent spacing in hole and array of apertures are disposed with some installing holes, and rear lower beam pipe rear portion positioning support angle bar lower end is fixed by bolt In three-dimensional mounting platform postmedian and left and right is oppositely arranged（When being embodied as, described rear lower beam pipe rear portion positioning support angle bar and Aforesaid rear lower beam pipe front portion positioning support angle bar 23 is same component, with more efficient dexterously utilization space, saving member And reduces cost）；Positioning support angle bar hypotenuse in lower beam pipe rear portion is arranged backward and medial surface upper position is fixedly connected with one afterwards Individual rear lower beam pipe rear portion locating piece 27, described rear lower beam pipe rear portion locating piece 27 is provided with for embedding for rear lower beam pipe rear portion The rear lower beam pipe rear portion locating slot of positioning；

Described rear elastic axis and rear elastic axis journal stirrup positioning component include two be separately fixed at two after lower beam pipe rear portion The rear elastic axis locating piece 28 of positioning support angle bar top leading flank, rear elastic axis locating piece 28 front end inwardly front bending extension And elastic axis locating slot is used for realizing the positioning to rear elastic axis and rear elastic axis journal stirrup after front end upper side is provided with；

Described car body covering journal stirrup positioning component include two be separately fixed at two after lower beam pipe rear portion positioning support Angle bar top is located at the car body covering journal stirrup locating piece 29 of the medial surface of position on rear elastic axis locating piece, car body covering Journal stirrup locating piece 29 have one forward extend and lower surface be used for for car body covering journal stirrup lower surface laminating positioning car body Covering journal stirrup location division, the installing hole that car body covering journal stirrup positions on the corresponding car body covering of lower surface is provided with car body Covering journal stirrup positioning bolt hole, car body covering journal stirrup positioning bolt hole is used for screwing in by bolt realizes car body covering is propped up The positioning of ear and clamping；

Described fuel tank after-poppet positioning component include two be symmetrically arranged and the fuel tank of overall L-shaped frame structure after Support positioning supports angle bar 30, two fuel tank after-poppets positioning support on each sides of angle bar 30 all according to three-dimensional mounting platform on The consistent spacing of installing hole and array of apertures be disposed with some installing holes and be respectively arranged at two after lower beam pipe rear portion positioning Support angle anterior position（When being embodied as, after described fuel tank after-poppet positioning support angle bar 30 lower surface is by being bolted to Upper beam pipe front portion positioning support angle bar upper surface, with more efficient dexterously utilization space, saving member reduces cost）；Two Individual fuel tank after-poppet positioning supports angle bar 30 medial surface to be respectively fixedly installed a fuel tank after-poppet locating piece 31, props up after fuel tank Frame locating piece 31 have one rearwardly and upwardly extend and lower surface be used for oil feeding reservoirs after-poppet upper surface laminating positioning fuel tank after Support location division, it is fixed that the installing hole that fuel tank after-poppet positions on the corresponding fuel tank after-poppet of lower surface is provided with fuel tank after-poppet Position bolt hole, fuel tank after-poppet positioning bolt hole is used for screwing in by bolt realizes the positioning to fuel tank after-poppet and clamping.

Wherein, described back rest pipe afterbody positioning welding clamp structure includes rear upper beam pipe rear portion positioning component, cushion lock props up Frame positioning component and hood journal stirrup positioning component；

The rear upper beam pipe rear portion positioning that described rear upper beam pipe rear portion positioning component includes the rectangular body structure of entirety is used Standard square chest 32, described rear upper beam pipe rear portion positioning with each side of standard square chest 32 all according to three-dimensional mounting platform on peace The consistent spacing in dress hole and array of apertures are disposed with some installing holes, and rear upper beam pipe rear portion positioning standard square chest 32 leans on bolt solid Be scheduled on three-dimensional mounting platform 1 rear end medium position, described rear upper beam pipe rear portion positioning component also include one be secured transverse to after Upper beam pipe rear portion positioning upper beam pipe rear portion locating piece 33 after of standard square chest 32 front side surface upper position, described after on Beam pipe rear portion locating piece 33 front upper surface position left and right sides correspondence raises up and is formed with rear upper beam pipe rear portion positioning boss 34, rear upper beam pipe rear portion positioning boss 34 is provided with the rear upper beam pipe rear portion positioning for embedding positioning for rear upper beam pipe rear portion Groove；

Described cushion lock support positioning component includes being symmetrical set on the positioning standard square chest of rear upper beam pipe rear portion Two seat cushion lock support locating dowels 35 of end face, seat cushion lock support locating dowel 35 upper end is provided with seat cushion lock support positioning boss simultaneously Realize positioning for two installing hole insertions for seat cushion lock support afterbody；

Described hood journal stirrup positioning component includes being symmetrical set left in rear upper beam pipe rear portion positioning standard square chest 32 Two hood journal stirrup positioning angle bars 36 of right flank upper end position, the overall L-shaped frame structure of hood journal stirrup positioning angle bar 36 and On each side all according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, tail After cover journal stirrup positioning angle bar 36 bottom has a horizontal expansion section backward and fixes by bolt, upper beam pipe rear portion positioning is marked On front side of quasi- square chest 32, on hood journal stirrup positioning angle bar 36 medial surface, evagination is provided with hood journal stirrup locating piece 37, and hood props up tumour of external auditory meatus On the block 37 of position the installing hole of corresponding hood journal stirrup be provided with tapped through hole and lean on bolt screw in realize the positioning to hood journal stirrup with Clamping.

Claims

1. a kind of beam bending bicycle sample vehicle frame processing method is it is characterised in that first individually complete the independent processing of vehicle frame proterosoma, Complete the independent processing to upper beam pipe after lower beam pipe after two and two, complete fuel tank fore-stock and the independent of cushion rack adds Work, after the completion of elastic axis journal stirrup, the independent processing of rear elastic axis, fuel tank after-poppet and car body covering journal stirrup；Complete cushion lock Support and hood journal stirrup are individually processed；Lean on weld jig again by underbeam after the above-mentioned vehicle frame proterosoma individually machining, two Pipe, upper beam pipe, fuel tank fore-stock, cushion rack, rear elastic axis journal stirrup, rear elastic axis, fuel tank after-poppet, car body cover after two Part journal stirrup, seat cushion lock support and hood journal stirrup are positioned, and then disposably complete welding and obtain beam bending bicycle by connected for each component Sample vehicle frame；

Described weld jig includes upper surface and all side surfaces are all disposed with the three-dimensional of some installing holes according to constant spacing array Mounting platform, and it is arranged on vehicle frame proterosoma positioning fixture structure on three-dimensional mounting platform, back rest pipe front portion positioning welding Clamp structure, back rest pipe rear portion positioning welding clamp structure and back rest pipe afterbody positioning welding clamp structure；Described vehicle frame first half Body positioning fixture structure is used for realizing the positioning to vehicle frame proterosoma；Described back rest pipe front portion positioning welding clamp structure is used for real The positioning of now anterior to rear lower beam pipe, rear upper beam pipe front portion, fuel tank fore-stock and cushion rack；Described back rest pipe rear portion tack welding Welding fixture structure is used for realizing to rear lower beam pipe rear portion, rear elastic axis journal stirrup, rear elastic axis, fuel tank after-poppet and car body covering The positioning of journal stirrup；Described back rest pipe afterbody positioning welding clamp structure be used for realize to rear upper beam pipe rear portion, seat cushion lock support and The positioning of hood journal stirrup；

Described vehicle frame proterosoma positioning fixture structure includes standpipe positioning component and bottom fork axis positioning component；

Described standpipe positioning component includes the standpipe positioning standard square chest of the rectangular body structure of entirety, described standpipe positioning If with each side of standard square chest all according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with Dry installing hole, standpipe positioning standard square chest sets by being bolted to three-dimensional mounting platform front Middle face upwardly extending Put, described standpipe positioning component also includes a standpipe positioning standard angle being fixed on standpipe positioning standard square chest upper surface Degree device, described standpipe positioning standard angle device includes each having fixed block and the rotation at a hinged end and a folding end The hinged end of block, fixed block and moving block is rotatably hinged and is provided with the rotation for realizing rotational angle positioning in hinged place Angle alignment pin, described fixed block with moving block all according to three-dimensional mounting platform on the consistent spacing of installing hole and aperture Array is disposed with some installing holes, and the fixed block folding end of described standpipe positioning standard angle device is arranged forward and leaned on bolt water Flat be fixed on standpipe positioning standard square chest upper surface, described standpipe positioning with the moving block upper surface middle part of standard angle device to On be fixedly installed standpipe positioning round table, described standpipe positioning round table diameter and lower riser end external diameter coupling and standpipe positioning round table At axle center coaxial on be provided with standpipe locating dowel with standpipe internal diameter coupling, standpipe locating dowel upper end clearance fit has disc For to positioning rear profile tube compression standpipe be fixed block；

Described bottom fork axis positioning component includes the bottom fork axis positioning support angle bar of two entirety frame structure in a rectangular trapezoid, described On each side of bottom fork axis positioning support angle bar all according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures Be disposed with some installing holes, bottom fork axis positioning support angle bar lower end by be bolted in the middle part of three-dimensional mounting platform and left and right relatively Setting；Bottom fork axis positioning support angle bar hypotenuse arranges backward and medial surface is fixedly installed the bottom fork axis locating piece extending forward, Between two bottom fork axis locating pieces, distance and electromotor hang installing plate left and right sides width coupling, before two bottom fork axis locating pieces Upper end is provided with bottom fork axis locating slot and for realizing the positioning to bottom fork axis two ends.

2. beam bending bicycle sample as claimed in claim 1 with vehicle frame processing method it is characterised in that the anterior positioning of described back rest pipe Weld jig structure include rear upper beam pipe front portion positioning component, fuel tank fore-stock positioning component, cushion rack positioning component and after Lower beam pipe front portion positioning component；

Described rear upper beam pipe front portion positioning component includes the anterior positioning of rear upper beam pipe of two entirety frame structure in a rectangular trapezoid Support angle, on each side of positioning support angle bar of described rear upper beam pipe front portion all according to three-dimensional mounting platform on installing hole one The spacing causing and array of apertures are disposed with some installing holes, and rear upper beam pipe front portion positioning support angle bar lower end is by being bolted to three Tie up in the middle part of mounting platform and left and right is oppositely arranged；Upper beam pipe front portion positioning support angle bar hypotenuse is arranged backward and leading flank is fixed afterwards Upper beam pipe front portion localization criteria protractor after being connected with one, described rear upper beam pipe front portion localization criteria protractor includes each having Have fixed block and the moving block at a hinged end and a folding end, the hinged end of fixed block and moving block rotatably hinged and Hinged place be provided with for realize rotational angle positioning rotational angle alignment pin, on described fixed block and moving block all according to The consistent spacing of installing hole on three-dimensional mounting platform and array of apertures are disposed with some installing holes, and described rear upper beam pipe is anterior fixed The fixed block of position standard angle device is vertically arranged and folding end is downwards and anterior fixed by being horizontally fixed on rear upper beam pipe by bolt Position support angle leading flank；Laterally it is fixedly connected with one between the moving block of upper beam pipe front portion positioning standard angle device after two Individual lateral connection block, after after corresponding two of lateral connection block upper surface, upper beam pipe forward position is provided with two, upper beam pipe is anterior fixed Position boss, rear upper beam pipe front portion positioning boss medial surface is provided with to be realized for outer downside laminating anterior with rear upper beam pipe The rear upper beam pipe front portion positioning step of positioning；

Described fuel tank fore-stock positioning component includes the anterior positioning of upper beam pipe after described lateral connection block upper surface is located at two With extend the fuel tank fore-stock location division of formation between boss and forward, described fuel tank fore-stock location division upper surface is provided with one Individual fuel tank fore-stock positioning boss, fuel tank fore-stock positioning boss upper surface is used for and the laminating of fuel tank fore-stock middle lower surface is real Now position, on described fuel tank fore-stock positioning boss the installing hole of corresponding fuel tank fore-stock be provided with fuel tank fore-stock location hole and Fuel tank fore-stock fastening screw simultaneously is used for realizing to the fixation after fuel tank fore-stock positioning；

Described cushion rack positioning component includes the anterior positioning of upper beam pipe after described lateral connection block upper surface is located at two and uses Between the boss and cushion rack location division that extends rearwardly to form, cushion rack location division upper surface is provided with two seats upwards Pad support locating dowel, two cushion rack locating dowel upper ends are provided with to be realized determining for inserting two installation in the holes on cushion rack The cushion rack positioning round table of position；

Described rear lower beam pipe front portion positioning component includes the anterior positioning of rear lower beam pipe of two entirety frame structure in a rectangular trapezoid Support angle, on each side of positioning support angle bar of described rear lower beam pipe front portion all according to three-dimensional mounting platform on installing hole one The spacing causing and array of apertures are disposed with some installing holes, and rear lower beam pipe front portion positioning support angle bar lower end is by being bolted to three Tie up mounting platform postmedian and left and right is oppositely arranged；Lower beam pipe front portion positioning support angle bar hypotenuse is arranged backward and leading flank is solid afterwards Surely lower beam pipe front portion localization criteria protractor after being connected with, described rear lower beam pipe front portion localization criteria protractor includes each There is fixed block and the moving block at a hinged end and a folding end, the hinged end of fixed block and moving block rotatably hinged and Hinged place be provided with for realize rotational angle positioning rotational angle alignment pin, on described fixed block and moving block all according to The spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures are disposed with some installing holes, and described rear lower beam pipe is anterior The fixed block of positioning standard angle device is vertically arranged and folding end is downwards and anterior by being horizontally fixed on rear lower beam pipe by bolt Positioning support angle bar leading flank；Laterally it is fixedly connected between the moving block of lower beam pipe front portion positioning standard angle device after two Lower beam pipe front portion positioning contiguous block after one, before rear lower beam pipe front portion positions lower beam pipe after corresponding to two with contiguous block upper surface Position installs lower beam pipe front portion positioning boss after being equipped with two, after rear lower beam pipe front portion positioning boss is provided with two confessions Lower beam pipe forward position snaps in the rear lower beam pipe front portion locating slot realizing positioning.

3. beam bending bicycle sample as claimed in claim 1 with vehicle frame processing method it is characterised in that the described back rest pipe rear portion positioning Weld jig structure is propped up after including rear lower beam pipe rear portion positioning component, rear elastic axis and rear elastic axis journal stirrup positioning component, fuel tank Frame positioning component and car body covering journal stirrup positioning component；

Described rear lower beam pipe rear portion positioning component includes the rear lower beam pipe rear portion positioning of two entirety frame structure in a rectangular trapezoid Support angle, on each side of described rear lower beam pipe rear portion positioning support angle bar all according to three-dimensional mounting platform on installing hole one The spacing causing and array of apertures are disposed with some installing holes, and rear lower beam pipe rear portion positioning support angle bar lower end is by being bolted to three Tie up mounting platform postmedian and left and right is oppositely arranged；Afterwards lower beam pipe rear portion positioning support angle bar hypotenuse arrange backward and medial surface on Portion position be fixedly connected with one after lower beam pipe rear portion locating piece, after described rear lower beam pipe rear portion locating piece is provided with for confession Lower beam pipe rear portion embeds the rear lower beam pipe rear portion locating slot of positioning；

Described rear elastic axis and rear elastic axis journal stirrup positioning component include two be separately fixed at two after lower beam pipe rear portion positioning The rear elastic axis locating piece of support angle top leading flank, rear elastic axis locating piece front end inwardly front bending extension in front end Upper side be provided with rear elastic axis locating slot for realize positioning to rear elastic axis and rear elastic axis journal stirrup；

Described car body covering journal stirrup positioning component include two be separately fixed at two after lower beam pipe rear portion positioning support angle bar Top is located at the car body covering journal stirrup locating piece of the medial surface of position on rear elastic axis locating piece, and car body covering props up tumour of external auditory meatus Position block have one forward extend and lower surface be used for for car body covering journal stirrup lower surface laminating positioning car body covering prop up Ear location division, the installing hole that car body covering journal stirrup positions on the corresponding car body covering of lower surface is provided with car body covering and props up Ear positioning bolt hole, car body covering journal stirrup positioning bolt hole is used for screwing in, by bolt, the positioning realized to car body covering journal stirrup And clamping；

Described fuel tank after-poppet positioning component include two be symmetrically arranged and overall L-shaped frame structure fuel tank after-poppet Positioning supports angle bar, two fuel tank after-poppets positioning support on each sides of angle bar all according to three-dimensional mounting platform on installing hole Consistent spacing and array of apertures be disposed with some installing holes and be respectively arranged at two after lower beam pipe rear portion positioning support angle bar Anterior position；Two fuel tank after-poppet positioning support angle bar medial surface to be respectively fixedly installed a fuel tank after-poppet locating piece, oil Case after-poppet locating piece have one rearwardly and upwardly extend and lower surface be used for oil feeding reservoirs after-poppet upper surface laminating positioning oil Case after-poppet location division, the installing hole that fuel tank after-poppet positions on the corresponding fuel tank after-poppet of lower surface props up after being provided with fuel tank Frame positioning bolt hole, fuel tank after-poppet positioning bolt hole is used for screwing in by bolt realizes the positioning to fuel tank after-poppet and clamping.

4. beam bending bicycle sample as claimed in claim 1 with vehicle frame processing method it is characterised in that the described back rest pipe afterbody positioning Weld jig structure includes rear upper beam pipe rear portion positioning component, cushion lock support positioning component and hood journal stirrup positioning component；

Described rear upper beam pipe rear portion positioning component includes the rear upper beam pipe rear portion positioning standard of the rectangular body structure of entirety Square chest, described rear upper beam pipe rear portion positioning with each side of standard square chest all according to consistent with the installing hole on three-dimensional mounting platform Spacing and array of apertures be disposed with some installing holes, rear upper beam pipe rear portion positioning standard square chest is by being bolted to three-dimensional peace Assembling platform rear end medium position, described rear upper beam pipe rear portion positioning component also includes one and is secured transverse to rear upper beam pipe rear portion calmly Position upper beam pipe rear portion locating piece after of standard square chest front side surface upper position, before the locating piece of described rear upper beam pipe rear portion Portion upper surface location left and right sides correspondence raises up and is formed with rear upper beam pipe rear portion positioning boss, rear upper beam pipe rear portion convex Rear upper beam pipe rear portion locating slot for embedding positioning for rear upper beam pipe rear portion is provided with platform；

Described cushion lock support positioning component includes being symmetrical set in rear upper beam pipe rear portion positioning standard square chest upper surface Two seat cushion lock support locating dowels, seat cushion lock support locating dowel upper end be provided with seat cushion lock support positioning boss and be used for abutment Positioning is realized in two installing hole insertions of pad lock support afterbody；

Described hood journal stirrup positioning component includes being symmetrical set in rear upper beam pipe rear portion positioning standard square chest left and right side Two hood journal stirrup positioning angle bars of upper end position, hood journal stirrup positioning angle bar integrally on L-shaped frame structure and each side all According to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, hood journal stirrup positions Angle bar bottom have a horizontal expansion section backward and by bolt fixing after on front side of the positioning standard square chest of upper beam pipe rear portion, tail On cover journal stirrup positioning angle bar medial surface, evagination is provided with hood journal stirrup locating piece, corresponding hood journal stirrup on hood journal stirrup locating piece Installing hole is provided with tapped through hole and realizes the positioning to hood journal stirrup and clamping by bolt screw-in.