CN103010375B - Manufacturing process of bicycle frame - Google Patents
Manufacturing process of bicycle frame Download PDFInfo
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- CN103010375B CN103010375B CN201210545413.9A CN201210545413A CN103010375B CN 103010375 B CN103010375 B CN 103010375B CN 201210545413 A CN201210545413 A CN 201210545413A CN 103010375 B CN103010375 B CN 103010375B
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Abstract
The invention discloses a manufacturing process of a bicycle frame. The manufacturing process mainly comprises the steps of: (1) blanking; (2) cutting of an arc-shaped groove at one end of an upper tube and an upper fork; (3) welding; (4) polishing; and (5) repair welding. By adopting the manufacturing process, the strength of the bicycle frame can be enhanced, and the attractive appearance of the bicycle frame can be improved.
Description
Technical field
The present invention relates to the manufacturing process of cycle frame.
Background technology
For intensity and the aesthetics of cycle frame are provided, traditional a bicycle frame structure comprises head tube, middle pipe crossbeam and back vent, wherein head tube is welded on the front end of crossbeam, and the middle part that back vent is divided into forward crossbeam by crossbeam rear end forms, and middle pipe is clamped between back vent.The main manufacturing process of the cycle frame of said structure is, moulding head tube and middle pipe, then, crossbeam is divided into forward to crossbeam middle part from rear end, then head tube is welded to the leading section of crossbeam, by middle tube grip between back vent and welding, the medial surface of the back vent of finally polishing.The manufacturing process of said structure, owing to the rear end part of crossbeam need to being isolated, technique is more complicated, and efficiency is low, and most importantly after back vent is split to form, space between back vent reduces gradually from rear end forward end, so, and in polishing back vent process, owing to being subject to the limitation in space, by a procedure, be difficult to reach the requirement of polishing, to polishing, brought many inconvenience, even the operation of polishing cannot be realized in some place.
For this reason, occurred crossbeam and back vent separately to manufacture below, finally by the mode of welding, be connected on middle pipe, but this structure is because forming weld seam at middle pipe place, easily forming stress concentrates, so, in the junction of crossbeam and middle pipe and the junction of back vent and middle pipe easily occur fracture phenomenon, thereby affected the intensity of cycle frame, meanwhile, in center, crossbeam and back vent at middle pipe place because the reason of weld seam cannot shape all-in-one-piece streamlined structure, therefore, affected the outward appearance of cycle frame.
Summary of the invention
The object of the invention is the manufacturing process for a kind of cycle frame is provided, this worker artistic skill improves the intensity of cycle frame, and the outward appearance U.S. that can improve cycle frame, reduces production costs.
For achieving the above object, a kind of manufacturing process of cycle frame, cycle frame comprises head tube, middle pipe, upper pipe, lower pipe, upper fork, lower fork, five-way; One end of upper pipe is welded in head tube, and the other end of upper pipe is welded on middle pipe; One end of lower pipe is welded in head tube, and the other end of lower pipe is welded on five-way; One end of upper fork is welded on middle pipe, and the other end of upper fork is connected by back claw with the other end of lower fork, and one end of lower fork is welded on five-way; Described five-way is welded on middle pipe; The technical process of manufacturing above-mentioned cycle frame is.
(1) for the blanking respectively of head tube, middle pipe, upper pipe, lower pipe, upper fork, lower fork, five-way and back claw.
(2) processing head tube, middle pipe, lower pipe, lower fork, five-way and back claw.
(3) pipe in processing, in processing, the process of pipe is: as above the diameter of pipe material is greater than middle pipe diameter, at the vertical arc groove coordinating with middle pipe outer wall of an end-grain cutting one of upper pipe material, as above the diameter of pipe material is less than or equal to the diameter of middle pipe, first one end of upper pipe material is flattened, make the width of pipe material one end be greater than the diameter of middle pipe, then in one end of upper pipe material, cut out the arc groove consistent with flattening direction.
(4) fork in processing, in processing, the process of fork is: upper fork left and right fork curved arc is processed, between the left and right fork of upper fork, weld pole, assurances in fork-join pipe width be greater than middle pipe diameter 2-4MM, then with vertical knee-type milling machine, process the arc groove of pipe in milling cooperation;
(5) the upper pipe one end of cutting arc groove is welded in middle pipe, now, the end face of upper pipe one end with through middle tubular axis line and with through the distance of the vertical plane of top tube and down tube axis plane, be 2-4mm, and form weld seam in upper Guan Yuzhong pipe contact position.
(6) the upper fork one end of cutting arc groove is welded in middle pipe, now, the end face of upper fork one end with through middle tubular axis line and with through the distance of the upper fork shaft line plane vertical with the plane of lower fork axis, be 2-4mm, and at upper fork and middle pipe contact position formation weld seam.
(7) five-way is welded on middle pipe; Head tube is welded to the other end of upper pipe; One end of lower pipe is welded in head tube, the other end of lower pipe is welded on five-way; One end of lower fork is welded on five-way, the other end of upper fork and lower fork is linked together by back claw.
(8) polish off middle pipe place upper pipe and on the weld seam that forms between fork.
(9) upper pipe and on fork junction repair welding, make to form between upper fork and upper pipe at middle pipe place two horizontal circular arc weld seams.
As improvement, the processing of spraying paint on cycle frame.
The invention has the beneficial effects as follows: adopt above-mentioned manufacturing process, due to the end face of upper pipe one end with through middle tubular axis line and with through the distance of the vertical plane of top tube and down tube axis plane, be 2-4mm, the end face of one end of the central tube with through middle tubular axis line and with through the distance of the upper fork shaft line plane vertical with the plane of lower fork axis, be 2-4mm, and form weld seam at upper fork and middle pipe contact position, in bruting process, can be by smooth the weld grinding between upper pipe and upper fork, and can not be polished to pipe and upper fork and damage pipe and upper fork; After polishing, pipe is connected together with upper fork, therefore, improved the bonding strength of upper Guan Yuzhong pipe and upper fork and middle pipe junction, thereby, improved the intensity of whole cycle frame.Meanwhile, from the appearance, after polishing and repair welding, upper pipe has become an entirety with upper fork-shaped, has realized fairshaped connection, therefore, and appearance looks elegant.
Accompanying drawing explanation
Fig. 1 is the structural representation of cycle frame of the present invention.
Fig. 2 is the upward view of cycle frame of the present invention.
Fig. 3 is the structural representation that welds for the first time rear cycle frame.
Fig. 4 is the structural representation of cycle frame after polishing.
Fig. 5 is the enlarged drawing of A.
Fig. 6 is the enlarged drawing of B.
Fig. 7 is the enlarged drawing of C.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
As depicted in figs. 1 and 2, cycle frame comprises head tube 1, middle pipe 2, upper pipe 3, lower pipe 4, upper fork 5, lower fork 6 and five-way 71; One end of upper pipe 3 is welded in head tube 1, and the other end of upper pipe 3 is welded on middle pipe 2; One end of lower pipe 4 is welded in head tube 1, and the other end of lower pipe 4 is welded on five-way 71, and five-way is welded on the lower end of middle pipe; Upper fork 5 consists of two of left and right forks, between two left and right forks, is welded with pole.One end of upper fork is welded on middle pipe 2, and the other end of upper fork 5 is connected by back claw 81 with lower fork 6, and one end of lower fork 6 is welded on five-way 71.
The technical process of manufacturing above-mentioned cycle frame is.
(1) for head tube 1, middle pipe 2, upper pipe 3, lower pipe 4, upper fork 5, lower fork 6, five-way 71 and back claw 81 blankings respectively.
(2) processing head tube 1, middle pipe 2, lower pipe 4, lower fork 6, five-way 71 and back claw 81.
(3) pipe 3 in processing, in processing, the process of pipe 3 is: as above the diameter of pipe material is greater than middle pipe diameter, at the vertical arc groove coordinating with middle pipe outer wall of an end-grain cutting one of upper pipe material, as above the diameter of pipe material is less than or equal to the diameter of middle pipe, first one end of upper pipe material is flattened, make the width of pipe material one end be greater than the diameter of middle pipe, then in one end of upper pipe material, cut out the arc groove consistent with flattening direction, when upper pipe joins middle pipe to, the end face that makes pipe one end with through middle tubular axis line and with through the distance of the vertical plane of top tube and down tube axis plane, be 2-4mm.
(4) fork 5 in processing, in processing, the process of fork is: upper fork left and right fork curved arc is processed, by pole will be on two fork couple together, in assurances in fork-join pipe width be greater than middle pipe diameter 2-4MM, then with vertical knee-type milling machine, process the arc groove of washing pipe in cooperation; When upper fork-join is incorporated into middle pipe, the end face that makes fork one end with through middle tubular axis line and with through the distance of the upper fork shaft line plane vertical with the plane of lower fork axis, be 2-4mm.
(5) the upper pipe one end of cutting arc groove is welded in middle pipe, now, the end face of upper pipe one end with through middle tubular axis line and with through the distance of the vertical plane of top tube and down tube axis plane, be 2-4mm, preferably 3mm, as shown in Figure 3 and Figure 6, in upper Guan Yuzhong pipe contact position, form weld seam 7.
(6) the upper fork one end of cutting arc groove is welded in middle pipe, now, the end face of upper fork one end with through middle tubular axis line and with through the distance of the upper fork shaft line plane vertical with the plane of lower fork axis, be 2-4mm, preferably 3mm, as shown in Figure 3 and Figure 6, at upper fork and middle pipe contact position, form weld seam 8.
(7) five-way is welded on middle pipe; Head tube is welded to the other end of upper pipe; One end of lower pipe is welded in head tube, the other end of lower pipe is welded on five-way; One end of lower fork is welded on five-way, the other end of upper fork and lower fork is linked together by back claw.
(8) polish off middle pipe place upper pipe and on the weld seam that forms between fork, as shown in Fig. 4 and Fig. 7, upper pipe and on form a smooth joint face 9 between fork.
(9) as shown in Figure 1 and Figure 5, upper pipe and on fork junction repair welding, make to form between upper fork and upper pipe at middle pipe place two horizontal circular arc weld seams 10.
(10) processing of spraying paint on cycle frame.
In the present invention, due to the end face of upper pipe 3 one end with through middle tubular axis line and with through the distance of the vertical plane of top tube and down tube axis plane, be 3mm, the end face of one end of the central tube with through middle tubular axis line and with through the distance of the upper fork shaft line plane vertical with the plane of lower fork axis, be 3mm, and form weld seam at upper fork and middle pipe contact position, in bruting process, can be by smooth the weld grinding between upper pipe and upper fork, and can not be polished to pipe and upper fork and damage pipe and upper fork; After polishing, eliminated the stress of upper pipe and upper fork junction, and pipe is connected together with upper fork, therefore, improved the bonding strength of upper Guan Yuzhong pipe and upper fork and middle pipe junction, thereby, improved the intensity of whole cycle frame.Meanwhile, from the appearance, after polishing and repair welding, upper pipe has become an entirety with upper fork-shaped, has realized fairshaped connection, therefore, and appearance looks elegant.
Claims (2)
1. a manufacturing process for cycle frame, cycle frame comprises head tube, middle pipe, upper pipe, lower pipe, upper fork, lower fork, five-way; One end of upper pipe is welded in head tube, and the other end of upper pipe is welded on middle pipe; One end of lower pipe is welded in head tube, and the other end of lower pipe is welded on five-way; One end of upper fork is welded on middle pipe, and the other end of upper fork is connected by back claw with the other end of lower fork, and one end of lower fork is welded on five-way; Described five-way is welded on middle pipe; It is characterized in that: the technical process of manufacturing above-mentioned cycle frame is:
(1) for the blanking respectively of head tube, middle pipe, upper pipe, lower pipe, upper fork, lower fork, five-way and back claw;
(2) processing head tube, middle pipe, lower pipe, lower fork, five-way and back claw;
(3) pipe in processing, in processing, the process of pipe is: as above the diameter of pipe material is greater than middle pipe diameter, at the vertical arc groove coordinating with middle pipe outer wall of an end-grain cutting one of upper pipe material, as above the diameter of pipe material is less than or equal to the diameter of middle pipe, first one end of upper pipe material is flattened, make the width of pipe material one end be greater than the diameter of middle pipe, then in one end of upper pipe material, cut out the arc groove consistent with flattening direction;
(4) fork in processing, in processing, the process of fork is: upper fork left and right fork curved arc is processed, between the left and right fork of upper fork, weld pole, assurances in fork-join pipe width be greater than middle pipe diameter 2-4MM, then with vertical knee-type milling machine, process the arc groove of pipe in milling cooperation;
(5) the upper pipe one end of cutting arc groove is welded in middle pipe, now, the end face of upper pipe one end with through middle tubular axis line and with through the distance of the vertical plane of top tube and down tube axis plane, be 2-4mm, and form weld seam in upper Guan Yuzhong pipe contact position;
(6) the upper fork one end of cutting arc groove is welded in middle pipe, now, the end face of upper fork one end with through middle tubular axis line and with through the distance of the upper fork shaft line plane vertical with the plane of lower fork axis, be 2-4mm, and at upper fork and middle pipe contact position formation weld seam;
(7) five-way is welded on middle pipe; Head tube is welded to the other end of upper pipe; One end of lower pipe is welded in head tube, the other end of lower pipe is welded on five-way; One end of lower fork is welded on five-way, the other end of upper fork and lower fork is linked together by back claw;
(8) polish off middle pipe place upper pipe and on the weld seam that forms between fork;
(9) upper pipe and on fork junction repair welding, make to form between upper fork and upper pipe at middle pipe place two horizontal circular arc weld seams.
2. the manufacturing process of cycle frame according to claim 1, is characterized in that: the processing of spraying paint on cycle frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210545413.9A CN103010375B (en) | 2012-12-17 | 2012-12-17 | Manufacturing process of bicycle frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210545413.9A CN103010375B (en) | 2012-12-17 | 2012-12-17 | Manufacturing process of bicycle frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103010375A CN103010375A (en) | 2013-04-03 |
| CN103010375B true CN103010375B (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210545413.9A Active CN103010375B (en) | 2012-12-17 | 2012-12-17 | Manufacturing process of bicycle frame |
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| CN (1) | CN103010375B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013114916B4 (en) * | 2013-08-16 | 2022-09-15 | Hyundai Motor Co. | Process for manufacturing a frame assembly for a bicycle |
| CN106272094A (en) * | 2016-08-28 | 2017-01-04 | 广州市银三环机械有限公司 | A kind of method using sandblasting that vehicle frame is polished |
| CN107442904B (en) * | 2017-09-12 | 2020-03-31 | 西安庄信新材料科技有限公司 | Method for manufacturing titanium alloy vehicle frame |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4286013B2 (en) * | 2003-01-27 | 2009-06-24 | 中央精機株式会社 | Hub hole machining method for automobile wheels |
| CN201863962U (en) * | 2010-11-05 | 2011-06-15 | 巨辁国际有限公司 | Frame joint sleeve for bicycle |
| CN202541740U (en) * | 2012-04-01 | 2012-11-21 | 广州市银三环机械有限公司 | Bicycle frame |
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