TW201338890A - Method of manufacturing chain part - Google Patents

Abstract

A method of manufacturing chain part, which can be a link plate, a roller, a bushing and a pin, and comprises: a step of cutting an initial link board and a circular piece waste re-processing step which use the circular piece waste produced from the step of cutting an initial link board to manufacture the part. When the chain part is a link plate, the circular piece waste re-processing step comprises an extension process and a cutting process. When the chain part is a roller or bushing, the circular piece waste re-processing step comprises a shaping process and a punching process. By completely using the circular piece waste produced from cutting an initial link board, the manufacturing method can reduce the waste amount and material costs.

Description

Chain part manufacturing method

The present invention relates to a manufacturing method, and more particularly to a method of manufacturing a part that utilizes waste generated by a chain manufacturing process to produce a chain.

Due to its flexibility and better mechanical strength, the chain is often used in the mechanical field as a power transmission component. As the power of the mounting mechanism varies, the specifications of the chain are also large. For example, The chain of power transmission of large machinery is large in size and strong in structure, and the chain used in general bicycles is small in size. But regardless of the size of the chain, it usually contains parts such as links, chain rolls, bushings, chain shafts, and the like. Wherein, in the manufacture of the chain, the cutting process is performed, and a chain piece having two perforations respectively is cut on a metal plate, and the chain roller and the bushing are solid cylinders which are cut to a predetermined length. Then, a hollow tube body is formed by punching.

It is known that in the process of manufacturing a chain, in order to reduce scrap and reduce material cost, adjacent chains are as close as possible to cut a larger number of chains on the same area of metal sheet. However, in any case, in the process of forming each piece of the chain, two wafer scraps corresponding to the perforations are produced, and these disc scraps are generally sold as low-cost scrap. Although the manufacturing process of the conventional chain has increased the number of chain forming as much as possible, each piece of the chain will produce two pieces of scrap waste treated as waste after molding. If the above-mentioned wafer scrap can be effectively utilized, The amount of waste and the cost of materials can be reduced, and the present invention is directed to the aforementioned defects.

It is an object of the present invention to provide a method of manufacturing a chain component that can reduce the amount of waste and the cost of materials.

The manufacturing method of the present invention is used to manufacture an initial chain plate and a chain part, the chain part is a chain piece, and the manufacturing method comprises the steps of cutting the initial chain plate: cutting two pieces on one metal plate An initial chain plate of the circular hole, and two wafer scraps corresponding to the round holes of the initial chain plate; and a scrap scrap reprocessing step, comprising: stretching processing: the wafer scrap is pressed into an area larger than a stretched sheet having the same thickness as the chain piece, and a cutting process: the chain piece is cut out from the stretched sheet.

Another feature of the manufacturing method of the present invention is that the chain component is a chain roller or a bushing, and the manufacturing method comprises: cutting the initial chain plate step: cutting an initial chain plate having two circular holes on a metal plate And two wafer scraps corresponding to the circular holes of the initial chain plate; and a wafer scrap reprocessing step: comprising: shaping processing: shaping the wafer waste into a cylinder having both end faces, and Punching processing: grooves are punched on the end faces of the cylinder and then penetrated through the grooves.

The beneficial effect of the invention is that the manufacture of the chain parts, the chain rollers, the bushings or the chain shafts and the like according to the size of the wafers produced by the manufacture of the initial chain plates can fully utilize the chain manufacturing time cutting. Cut waste, and achieve the effect of reducing the amount of waste and material costs.

The foregoing and other objects, features, and advantages of the invention are set forth in the <RTIgt;

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 1, 2, and 3, a first preferred embodiment of the manufacturing method of the present invention is for manufacturing a part of a chain 1, the chain 1 generally comprising a plurality of chain pieces 11, a plurality of chain rolls 12, and a plurality of linings. The sleeve 13 and the plurality of chain shafts 14. In the preferred embodiment, the part is a chain 11 having two spaced perforations 111 and a curved silhouette edge 112. The manufacturing method includes the following steps:

Cutting the initial chain plate step: cutting a plurality of initial chain plates 15 on a metal plate 10, each of the initial chain plates 15 having two circular holes 151, which will produce a corresponding initial chain plate 15 after cutting. A plurality of wafer scraps 16 of round holes 151.

Disc Reprocessing Step: In this step, in order to take the wafer scrap 16 to manufacture the chain 11 of the chain 1, it mainly comprises a stretching process and a cutting process. The stretching process is to press the wafer scrap 16 into a circular and enlarged diameter stretched piece 16' and then level it. After the flattening, the diameter D of the stretched piece 16' is larger than the length L of the chain piece L. And the thickness of the stretched piece 16' is equal to the thickness of the chain piece 11.

Further, the stretched sheet 16' has a circular outer peripheral surface 161. For the convenience of subsequent processing, preferably, the shortest distance H of the contour edge 112 of the chain 11 to the stretched sheet 16' is greater than or equal to the The thickness of the chain piece 11.

The cutting process of this embodiment cuts the chain piece 11 having the perforations 111 on the stretched sheet 16'. Since the chain 11 of the embodiment is directly made of the wafer waste 16 for manufacturing the initial chain plate 15, the manufacturing method of the embodiment can not only fully utilize waste materials, reduce waste materials, but also save material cost. efficacy.

Referring to Figures 1 and 4, a second preferred embodiment of the manufacturing method of the present invention is also used to manufacture the components of the chain 1 of Figure 1, which in the preferred embodiment is also a chain 11. The manufacturing method also includes: cutting the initial chain plate step, and the wafer scrap reprocessing step, wherein the step of cutting the initial chain plate is the same as that of the first embodiment, and will not be described again, and the wafer scrap reprocessing step also includes a Extension processing and a cutting process. The stretch processing also presses the wafer scrap 16 into a stretch sheet 16'. The stretched sheet 16' has an elliptical shape, so that the outer peripheral surface 161 has two arc segments 162, and two arcs are connected. The straight section 163 of the segment 162, and the tab 16' also has a long axis 164. The cutting process cuts the chain 11 from the stretched sheet 16'.

In the same way, in order to achieve a better cutting quality, the wafer scrap 16 of the embodiment has a long axis 164 greater than the length L of the chain piece 11 when the stretched sheet 16' is formed by extension processing. The shortest distance H from the outer peripheral surface 161 of the stretched sheet 16' to the contoured edge 112 of the chain 11 is also greater than or equal to the thickness of the chain sheet 11. The shape of the above-mentioned stretched piece 16' is closer to that of the formed chain piece 11, so that the waste remaining in the present embodiment after cutting is less than that of the first embodiment.

Referring to Figures 1, 5 and 6, a third preferred embodiment of the method of manufacture of the present invention is also used to manufacture the components of the chain. In the preferred embodiment, the component is a chain roller 12. The processing method of the embodiment also includes the steps of cutting the initial chain plate and the step of reprocessing the wafer scrap, wherein the step of cutting the initial chain plate is the same as that of the first embodiment, and details are not described herein again. The wafer scrap reprocessing steps include: one-piece processing and one punching processing. That is, the wafer scrap 16 is first flattened into a cylinder 16" of appropriate diameter and height, the cylinder 16" having two parallel end faces 166, which are then stamped by the forging machine to the end faces 166 of the cylinder 16". A recess 167 is formed in each of the grooves 167, and then through the grooves 167 to form a passage 168, that is, the manufacture of the chain roller 12 is completed.

The innovation of the foregoing manufacturing method can also make full use of the wafer scrap 16 generated when the initial chain plate 15 is formed, to manufacture the chain roller 12 conforming to the size specification, and the structure of the bushing 13 of the general chain 1 and the chain roll Similarly, the bushing 13 of the chain 1 can also be manufactured by the manufacturing method of the third preferred embodiment of the present invention. As the chain shaft 14 of the chain 1 is formed into a round rod shape, the wafer scrap 16 can also be formed by forging and shaping, and will not be illustrated by way of illustration.

As can be seen from the above description, the manufacturing method of the chain component of the present invention is not only innovative, but also can fully utilize the scrap scrap 16 which is originally processed in the form of waste. The above manufacturing method can be made into a size according to the weight of the scrap scrap 16 of the disc. Different parts of the chain 11 of the chain 11, the chain roller 12, the bushing 13 and the chain shaft 14 and the like, so the present invention can fully utilize the scraps cut during the manufacture of the chain 1, and thus reduce the amount of waste and materials. The cost of the effect.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

1. . . Chain

10. . . Sheet metal

11. . . Chain

111. . . perforation

112. . . Contour edge

12. . . Chain rolling

13. . . bushing

14. . . Chain shaft

15. . . Initial chain plate

151. . . Round hole

16. . . Disc waste

16’. . . Exhibition tablet

16"...cylinder

161. . . Peripheral surface

162. . . Arc segment

163. . . Straight section

164. . . Long axis

166. . . End face

167. . . Groove

168. . . aisle

D. . . diameter

L. . . length

H. . . Shortest distance

Figure 1 is an exploded perspective view showing the structure of a chain;

2 is a process flow diagram of a first preferred embodiment of the manufacturing method of the present invention;

Figure 3 is a schematic view of the processing to assist in the processing of the first preferred embodiment;

Figure 4 is a schematic view similar to Figure 3, illustrating a second preferred embodiment of the manufacturing method of the present invention;

Figure 5 is a process flow diagram of a third preferred embodiment of the manufacturing method of the present invention;

Figure 6 is a schematic view similar to Figure 3, illustrating the third preferred embodiment.

10. . . Sheet metal

11. . . Chain

111. . . perforation

112. . . Contour edge

15. . . Initial chain plate

151. . . Round hole

16. . . Disc waste

16’. . . Exhibition tablet

161. . . Peripheral surface

D. . . diameter

L. . . length

H. . . Shortest distance

Claims (4)

A method for manufacturing a chain part for manufacturing an initial chain plate and a chain of a chain, the manufacturing method comprising: cutting an initial chain plate step: cutting an initial chain plate having two round holes on a metal plate And two wafer scraps corresponding to the round holes of the initial chain plate; and a wafer scrap reprocessing step: comprising: stretching processing: pressing the wafer scraps into a larger area than the chain and having the same thickness Extrusion, and cutting: The chain is cut out at the exhibition. The method for manufacturing a chain part according to claim 1, wherein the stretched sheet has a circular shape, a diameter larger than a length of the chain, and one of the outer peripheral surfaces of the stretched sheet to the one of the links A shortest distance between the edges of the silhouette is greater than or equal to the thickness of the chain. The method for manufacturing a chain part according to the above aspect of the invention, wherein the stretched sheet has an elliptical shape and has a long axis larger than a length of the chain, and an outer peripheral surface of the stretched sheet is A shortest distance between the contour edges of one of the links is greater than or equal to the thickness of the chain. A method for manufacturing a chain component for manufacturing an initial chain plate and a chain roller or a bushing, the manufacturing method comprising: cutting an initial chain plate step: cutting a circular hole on a metal plate An initial link plate, and a wafer waste corresponding to the round hole of the initial link plate; and a wafer scrap reprocessing step: the method includes: shaping the disk: forming the wafer waste into a cylinder having both end faces And punching processing: grooves are punched on the end faces of the cylinder, and then penetrate the grooves.