TW201636169A - Method for manufacturing foldable bicycle tool - Google Patents

Abstract

The present invention relates to a method for manufacturing a foldable bicycle tool, which comprises the following steps: material preparation, cutting, trimming and processing, lathing and milling, forming an assembling end by milling and cutting, and forming an assembling hole of the assembling end. With the aforementioned steps, it is able to manufacture a product of a foldable tool according to the present invention. In the present invention, the step of material preparation is provided to prepare a bar, wherein the bar is a rigid body having a cross-section that can be a regular hexagonal shape, a quadrilateral shape, or a circular shape. The step of cutting is provided to cut the bar to a predetermined length to serve as a base material. The step of trimming and processing is provided to conduct a processing operation to trim and finish two ends of the base material with the predetermined length for forming planar surfaces thereby providing a semi-finish product of a foldable tool. The step of lathing and milling is provided to conduct a lathing/milling operation to form an operation end of the semi-finish product of the foldable tool. The step of forming an assembling end by milling and cutting is provided to use a milling/cutting operation for second time to form an assembling end. The step of forming an assembling hole of the assembling end is provided to use a drill bit or an end milling cutter to conduct an operation of closed formation for an assembling hole in the assembling end.

Description

Bicycle folding tool making method

The present invention relates to a method of making a folding tool, and more particularly to a method of making a folding tool that does not require a heat treatment process.

The conventional technique of the conventional folding tool wrench is directly formed by a bar which is processed at one end and used as a wrench end by a bending process. The cross section of the bar body is equilateral distance or round shape, and the forming end of the processing wrench is matched with the universal coaxial turning and milling forming process, which can have the manufacturing advantages of low cost and mass production. However, in addition to the length of the wrench to be used, it must also cover the length of the bend forming assembly (such as the L segment shown in the first figure), so the cost of materials is high and the assembly end appears. It is quite bulky and inconvenient to carry.

In the case of Taiwan Patent No. I383868 of the previous case, it is necessary to first process the cylindrical steel material by re-grinding (forging and forging), which causes the billet body to accumulate considerable residual stress in the process and cause work hardening, so it is required in the manufacturing process. The annealing process is added to soften, so that the flattening and profile milling can be performed to the desired thickness and final dimension of the assembled end; this process can be obtained by shrinking (forging) and pressure equal plastic deformation process while reducing the volume. Better structural rigidity, however, the annealing process added to eliminate the machining stress remaining in the workpiece after forging may be possible in mass production. The risk of decarburization causes the tool to fail to meet the strength of the material after subsequent heat treatment hardening, especially for smaller folding tools, such as the use of scraping and lengthening The processing process will make the cost more expensive, not practical and popular.

In addition, the conventional technology I369274 proposes to increase the bending end flattening and remove the residual material before the traditional bending process, which can overcome the shortcomings of the I383868 costly and complicated process, and achieve the same appeal. However, although the flattened plastic deformation process effectively increases the structural density of the body and the assembled end to increase the rigidity, the residual stress generated after the flattening causes the bending end to be work hardened during the processing, as shown in the fifth figure. As shown in the following, during the bending process of high plastic deformation, the bar is prone to breakage or process defects that cannot be bent, which in turn affects the stability of production and shortens the life of the process die; Generally, the bending process wrench has a notched shape at the turning end, and the non-closed notch structure cannot withstand a large torque, as shown in the sixth figure (also similar to the conventional technique of the first figure), if necessary In view of the structural strength used, this method still cannot effectively reduce the volume of the assembled end, and there is also a cost problem.

The inventor of the present invention is actively developing, researching and improving based on the complexity of the above-mentioned processes, and has developed a "bicycle folding tool making method" to improve the economic and convenience of manufacturing related products, and to shorten the processing time. At the same time, it does not use traditional bending forming to reduce the volume and weight, and can also reduce the material formation. Accordingly, the object and effect of the present invention are achieved accordingly.

The method for manufacturing a bicycle folding tool of the present invention comprises the following steps: First, preparing a bar: wherein the cross section of the bar can be an equilateral hexagonal shape, a quadrangular shape or a circular rigid body; : The bar is cut to the preset length, and is a substrate; Third, the trimming process: the two ends of the substrate of the preset length are processed by plane trimming, and the semi-finished product is a folding tool; Milling processing; through the process of turning and milling processing to form the use end of the folding tool semi-finished product; five, the milling forming set end: then using the milling process to form the set end; six, forming the set end of the set hole: using the drill bit or end The milling cutter performs the closed molding of the set holes of the assembly end; by the above steps, the finished folding tool of the present invention can be produced.

1‧‧‧Bar

10‧‧‧Substrate

11‧‧‧Folding tools semi-finished products

12‧‧‧Use side

13‧‧‧Set end

131‧‧‧Set holes

14‧‧‧Folding tools

The first figure is a schematic diagram of the structure of a conventional technique.

The second figure is a schematic representation of the lack of work hardening during the resection of the conventional technique folding tool.

The third figure is a schematic diagram of the conventional technology folding tool without forming structural indentation.

The fourth figure is a schematic flow chart of the method for manufacturing the bicycle folding tool of the present invention. Figure.

The fifth drawing is a schematic diagram of the first step of the method for manufacturing the bicycle folding tool of the present invention.

The sixth drawing is a schematic diagram of the second step of the method for manufacturing the bicycle folding tool of the present invention.

The seventh drawing is a schematic diagram of the third step of the method for manufacturing the bicycle folding tool of the present invention.

The eighth figure is a schematic view of the fourth step of the method for manufacturing the bicycle folding tool of the present invention.

The ninth drawing is a schematic view of the fifth step of the method for manufacturing the bicycle folding tool of the present invention.

The tenth figure is a schematic diagram of the sixth step of the method for manufacturing the bicycle folding tool of the present invention.

The eleventh drawing is a block diagram showing the procedure for removing the residual material of the bicycle folding tool manufacturing method of the present invention, which can be carried out in the fifth step of the present invention.

Fig. 12 is a block diagram showing the procedure for removing the excess material of the bicycle folding tool manufacturing method of the present invention, which can be carried out in the sixth step of the present invention.

First, please refer to the fourth figure of the drawing, which is a flow chart of the bicycle folding tool manufacturing method of the present invention. The main steps include: 1. Preparation: a bar (1) is prepared, wherein the bar (1) The cross section may be an equilateral hexagonal, quadrangular or circular rigid body (as shown in the fifth figure); Second, cutting: the bar (1) is cut to the preset length, and is a substrate (10) (shown in Figure 6); Third, trimming: the substrate will be preset length (10) The two ends are processed by plane trimming, and are a semi-finished product of a folding tool (11) (as shown in the seventh figure); four, turning and milling; and then through the process of turning and milling, forming a semi-finished product of folding tools (11) The use end (12) (as shown in the eighth figure); five, the milling forming set end: then use the milling process to form the assembly end (13) (as shown in the ninth figure); The set of holes is set: the set hole (131) of the assembly end (13) is closed by a drill or an end mill, and is the folding tool (14) of the present invention (as shown in the tenth figure); Since this step is designed to be closed in the assembly end (131) through the assembly hole (131), the overall rigidity of the folding tool (14) can be effectively improved, unlike the conventional folding tool (ie, as shown in the second figure). The fragile loss caused by the conventional structure gap; and since the formation of the hole (131) is formed in the final step, the assembly end (13) may still be used after the hole (131) is removed from the forming group. Processing step of deformation generated in the case, and the impact group provided apertures (131) and a position accuracy.

According to the manufacturing method of the above steps of the present invention, since the semi-finished product adopts a bar which is equilaterally corresponding to the distance, the bar of the above-mentioned cross-section conforms to the mass production and processing basis of the concentric shaft processing in the preparation of the semi-finished product, and the use of the end 12 Longer tool life and faster processing during molding, which reduces manufacturing time. In addition, the end 12 can also be used to form a work with equilateral distance characteristics through a special mold. With the size (such as hex wrench or TORX Torx wrench), the bar with equilateral distance or circular cross section is easy to use and easy to use in the market, and it is easy to obtain. , effectively reducing the cost required.

In addition, it is particularly pointed out that since the present invention is designed to close the assembly hole (131) through the assembly end (13), the overall rigidity of the folding tool (14) can be effectively improved, unlike the structure gap of FIG. The resulting fragility is missing.

It must also be mentioned that the invention of the present invention can also avoid the processing troubles in forming the holes (131) after the assembly end (13) is processed and deformed.

In the molding step of the folding tool (14) of the present invention, it is not necessary to use the annealing process, so with the above description, the cost can be effectively reduced in sufficient structural stability, which is quite in line with the industry. demand.

Of course, the horizontally-arranged storage space utilization can also be maximized to facilitate space saving for carrying. Moreover, the application of the bicycle folding tool can effectively reduce the cost and reduce the carrying space and weight. Accordingly, the object and effect of the present invention are achieved, and it is worthy of promotion by the industry.

A further feature of the present invention is that the step of removing the residual material can be added, and the process of removing the residual material can be simultaneously performed at the milling forming end (ie, the fifth step) or the forming grouping hole (ie, the sixth step). Refer to the process descriptions in Figures 11 through 12.

Further, the present invention has been found experimentally (as shown in the tenth figure), if the maximum outer diameter of the assembled end (13) is X, and the diameter of the set hole (131) is Y, and makes it 0.35X<= When Y<=0.65X, it can simultaneously combine the "multiple" folding tools (14) with the holes (131), and can maintain the structural stability of the assembled end (13).

Claims (4)

A bicycle folding tool manufacturing method comprises the following steps: First, preparing a material: preparing a bar, wherein the cross section of the bar may be an equilateral hexagon, a quadrangle or a round rigid body; second, cutting: about The bar is cut to a preset length, and is a substrate; 3. Trimming processing: the two ends of the substrate of the preset length are processed by plane trimming, and the semi-finished product is a folding tool; Through the process of turning and milling, the end of the semi-finished product of the folding tool is formed; five, the milling forming set end: the milling forming program is used to form the set end; and the forming set of the forming end is set by the hole: using the drill bit or the end milling cutter The closed molding of the set holes of the assembly end is performed; the finished product of the folding tool of the present invention can be produced by the above steps. For the method of manufacturing the bicycle folding tool according to the first aspect of the patent application, the procedure for removing the residual material may be further added in the fifth step. For example, in the method for manufacturing a bicycle folding tool according to the first aspect of the patent application, the procedure for removing the residual material may be added in the sixth step. The bicycle folding tool manufacturing method according to claim 1, wherein if the maximum outer diameter of the assembled end is X, and the diameter of the assembled hole is Y, and 0.35X<=Y<=0.65X For the best implementation.