CN87106670A - Method and equipment thereof that bicycle rack is proofreaied and correct - Google Patents

Abstract

The invention discloses a kind of calibrating method of bicycle rack and a kind of dent removal equipment of this method of use.The characteristics of this method are that pipe positions and clamps as benchmark before utilizing, and the axial line of proofreading and correct standpipe and preceding pipe is proofreaied and correct two chain stay contact pin again to this plane symmetry in same plane earlier.This law processing ease, device structure is simple, and the vehicle frame quality of correction improves greatly.

Description

The present invention relates to cycle frame, particularly common 28 inch, 26 inch men and women formula bicycles vehicle frame calibrating method and use the equipment of this method.

The vehicle frame of 28 common inch, 26 inch men and women formula bicycles mainly by preceding pipe, standpipe, go up pipe, pipe, upright fork, chain stay and some joints, contact pin are welded to form down.After the welding, the vehicle frame warpage degenerates the rideability of bicycle, therefore, all will be after the vehicle frame seam through overcorrection, the axial line that makes standpipe and preceding pipe also will make two chain stay contact pin about this plane symmetry in same plane.Always, domestic bicycle trade all uses a kind of unit clamp when carrying out this correction work, and the upper and lower joint external diameter and the standpipe external diameter of former pipe are benchmark.Central axis hole both ends of the surface location with center tap, clamp, reflect that with four pointers preceding pipe and standpipe are in same plane, if not, then pull standpipe with crowbar or/and preceding pipe, pipe is positioned at same plane with the line of centers of standpipe before making, like this, last pipe, following pipe, before pipe and the axial line of four pipes of standpipe just in the plane one by one, and then pull to stand and pitch and chain stay, make two chain stay contact pin about this plane symmetry, like this, in theory, whole vehicle frame is just straight and even, still, in fact, location that this technology is selected for use and reference for installation be crude on, the cylindrical of lower adaptor, because the external diameter error is bigger, and position length is short, therefore accuracy of positioning is low, and this location benchmark does not overlap with the check benchmark of vehicle frame flatness again, and the correction process of vehicle frame requires not conform to the rideability of bicycle, thereby, the item time qualification rate low (can only reach 76%) of correcting vehicle frame influences the quality of bicycle.

The objective of the invention is to overcome the shortcoming of above-mentioned technology, a kind of simple and reliable correcting vehicle frame method is provided, and for the application of this method provides a kind of specialized apparatus, so that improve the qualification rate of correcting vehicle frame and the quality of bicycle significantly.

The characteristics of the inventive method are: position and clamp as benchmark with the worked-out unthreaded hole in preceding pipe two ends, cylindrical with standpipe is made auxiliary positioning, the axial line of proofreading and correct standpipe and preceding pipe is proofreaied and correct two chain stay contact pin again to this plane symmetry in same plane earlier.The central axis hole of center tap is guaranteed by follow-up boring process the squareness of standpipe.In order to make location and reliable clamping, clamp in the unthreaded hole at pipe two ends before can inserting with the moving chuck of deciding a chuck and a band tapering of a band tapering, with one group of live splint subcard posture in standing (qigong) pipe, be carved with scale on the support of clip, scale knows whether the axial line of standpipe and preceding pipe is positioned at same plane thus, if not, just pull clip, after this correction is qualified, pull upright fork or chain stay again, make two chain stay contact pin this plane symmetry.Equipment of the present invention has a base plate, and on base plate, Yi Bian the porose anchor clamps of using are installed, another side is equipped with a measurement mechanism, and a support is equipped with at the middle part.There are two chucks that are positioned at the band tapering on the same axis in the hole with anchor clamps, one is to decide chuck, another is chuck, in the unthreaded hole of pipe vehicle frame is located and clamped before these two chucks can insert respectively, being equipped with one on the support at middle part can be around the clip of support shaft rotation, the folder mouth of clip can be put into the standpipe of vehicle frame just, the line of centers of folder mouth and clip De rotation change line of centers and are positioned at same plane, and the aforesaid axial line of deciding chuck and moving chuck also is positioned at this plane, this plane is preferably parallel with the driving surface of base plate, measurement mechanism has a vertical shaft that is fixed on the base plate, the gauge that can not move along its axis around this rotation overlaps thereon, and the measuring junction of gauge can insert between the up-to-standard two chain stay contact pin just.Also can in the slotted eye of two chain stay contact pin, insert plug, measure the axial location of plug with gauge and check the position degree of two chain stay contact pin the vehicle frame predecessor.Can also measure the position degree of two chain stay contact pin with dial measuring gauge, comparator equivalent instrument, to determine that they are whether to the plane symmetry that axial line was determined of standpipe.Processing ease of the present invention, device structure of the present invention is simple, makes easily, but can guarantee that the steady quality ground of proofreading and correct the back vehicle frame reaches requirement.

Below in conjunction with embodiment and accompanying drawing, method and apparatus of the present invention is described in detail:

Fig. 1 is the birds-eye view that adopts a kind of frame alignment equipment of method of the present invention, Fig. 2 be A to view, Fig. 3 is that B is to view.

With reference to Fig. 1, at an end of base plate 1, anchor clamps 2 are installed, these anchor clamps have the chuck of two band taperings, and one is to decide chuck 3, and another is chuck 4.The axial line of two collet taper overlaps.Moving chuck 4 drives by spiral, hydraulic pressure, pneumatic or manual unit, moves along its axis direction, and stretch out or withdraw, and can be locked with above-mentioned a kind of actuating device.The small end of collet taper is littler than the unthreaded hole of preceding pipe, and big end is bigger than unthreaded hole, its tapering is preferably 15 °, the middle part of base plate 1 is fixed with one group of clip 7 is housed on a support 5, the support shaft 6, referring to Fig. 2, the diameter of the width of clip groove 8 and the degree of depth and seat tube adapts, and can put into standpipe and slightly loosening being advisable with lucky.Clip 7 can rotate around support shaft 6 with manual, motor-driven driving, the axial line of the line of centers of clip groove 8 and support shaft 6 and decide the axial line of chuck 3, the axial line that moves chuck 4 is positioned at same plane 9, this plane 9 is best parallel with base plate 1.The contact interface place of clip 7 and support 5 indicates scale 10, and whether the line of centers that this scale can indicate clip groove 8 is positioned at plane 9.Also can be without this scale 10, the amount of using instead instrument is measured clip 7 two ends and is carried out the inspection of this project with respect to the diff-H of base plate 1.The other end of base plate 1 is equipped with a measurement mechanism 11 of measuring two chain stay contact pin to the symmetry on plane 9, this device has an axle 12 vertical with plane 9, referring to Fig. 3, axle 12 can be made into a step axle, a gauge 13 of can be around its rotational but can not move along its axis is housed on it, and gauge 13 can be made into a clamp, and the width center of clamp overlaps with plane 9, distance between the width of clamp and two chain stay contact pin adapts, and the width dimensions of clamp can be by the standard design of feeler gauge.Whether this gauge 13 overlaps with plane 9 in order to the symmetrical plane of measuring two chain stay contact pin.Be preferably in the slotted eye of two chain stay contact pin and put into a plug 14, there is an annular groove 15 at the middle part of plug 14, and the width of the clamp of the width of annular groove 15 and gauge 13 adapts, and the width of clamp can be pressed the standard design of feeler gauge according to the width dimensions of annular groove 15.Also can on plug 14, make a ring limit, the consumption instrument is measured the height of this ring limit to base plate 1, whether the symmetrical plane of checking two chain stay contact pin overlaps with plane 9, can also directly measure the height of two chain stay contact pin by the consumption instrument, check whether the symmetrical plane of two chain stay contact pin overlaps with plane 9 to base plate.

When proofreading and correct vehicle frame, the standpipe of vehicle frame is put into clip groove 8, with in the unthreaded hole at pipe two ends before decide chuck 3 and moving chuck 4 and inserting respectively with the vehicle frame clamping, locate.Calibrate 10, if the line of centers of clip groove 8 is not in plane 9, the axial line of promptly representing standpipe and preceding pipe is not in same plane, so, the axial line of top tube and down tube is not also in this plane, pull clip 7 with crowbar 16, the line of centers of clip groove 8 is overlapped with plane 9, can make the axial line of standpipe and preceding pipe be positioned at same plane-plane 9.Also can adopt spiral, hydraulic pressure or pneumatics, clip 7 is rotated around support shaft 6, proofread and correct.The line of centers of intact standpipe in school and preceding pipe in same plane after, plug 14 is put into the slotted eye of two chain stay contact pin, check with gauge 13, see whether clamp can be filled in the annular groove 15 of plug 14, if can fill in, represent two chain stay contact pin about the plane symmetry that axial line determined of standpipe and preceding pipe, otherwise, must pull the upright fork or the chain stay of vehicle frame with crowbar, the clamp of gauge 13 can be filled in till the annular groove 15 of plug 14.Also can pull the upright fork or the chain stay of vehicle frame with spiral, hydraulic pressure or pneumatics, make the plane symmetry that axial line determined of two chain stay contact pin about standpipe and preceding pipe.And then look over scale 10, up to preceding pipe, standpipe, go up pipe, down the axial line of pipe all in same plane, and the symmetrical plane of two chain stay contact pin also with this planes overlapping till.So far, vehicle frame is promptly proofreaied and correct and is finished.Bearing 17 on the base plate 1 is provided with as the fulcrum of crowbar.

Our factory adopts method and apparatus of the present invention, proofreaies and correct 5 batches about 40000 of the vehicle frames of 26 inch men, lady's bicycle, and a time qualification rate brings up to 95% by 76% of former technology, and production efficiency improves 50%, than original correction process very big progress has been arranged.

Claims (4)

1, a kind of calibrating method of bicycle rack is made benchmark with the hole on the vehicle frame clamping is installed, and pulls standpipe, upright fork and chain stay and proofreaies and correct.It is characterized in that: do the benchmark location, clamp with the finished unthreaded hole in preceding pipe two ends, make auxiliary positioning with standpipe.Proofread and correct the axial line of standpipe and preceding pipe earlier in same plane.School two chain stay contact pin are to this plane symmetry again.

2, the calibrating method of bicycle rack according to claim 1, it is characterized in that: clamp in the unthreaded hole with pipe two ends before the moving chuck insertion of deciding a chuck and a band tapering of a band tapering, vehicle frame can not be moved, block standpipe with one group of clip, vehicle frame can not be rotated around the axial line of deciding chuck and moving chuck, pull clip, make the axial line of standpipe and preceding pipe be positioned at same plane, pull upright fork or chain stay again, make two chain stay contact pin about this plane symmetry.

3, a kind of equipment that is used for the calibrating method of the described bicycle rack of claim 1, it has a base plate 1, anchor clamps 2 are housed on the base plate 1, it is characterized in that: anchor clamps 2 have one to decide chuck 3 and a moving chuck 4, the axial line of two collet taper overlaps, base plate 1 middle part also is fixed with a support 5, one group of rotating clip 7 is housed on its support shaft 6, the clip groove 8 of clip 7 is with the axial line of support shaft 6 and decide chuck 3, the axial line of the cone of moving chuck 4 is positioned on the same plane 9, also has the measurement mechanism 11 of two chain stay contact pin of a measurement vehicle frame to the symmetry on this plane 9 on the base plate 1.

4, equipment according to claim 3 is characterized in that: measurement mechanism 11 has 12, one gauges 13 that can not move along its axis around axle 12 rotations of axle that are fixed on the base plate 1.