TWI434757B - Folding repair tool manufacturing process - Google Patents

Description

Folding repair tool process

The invention relates to a folding repair tool manufacturing process, and the improved folding wrench obtained by using the pre-wired material after multi-stroke cold forging, annealing and bending processing can make the peripheral side of the bent end of the folding wrench have a flat and uniform appearance surface. At the same time, it removes the extra-volume features inherent in the peripheral side of the conventional technology, and has the characteristics of making the whole tool light and easy to carry, and providing the user with convenient storage and operation.

Nowadays, the conventional folding wrench is formed by forming a hinge hole at one end by using a bar bending process, and forming a use end as a wrench tool at the other end, so that the plurality of wrench tools can be pivoted on the tool holder through the pivot hole. Form a folding wrench.

Different sizes of wrench tools have the same size of the hinge hole. However, when the thickness of the bar is larger, the strength is stronger, which leads to the breakage or the inability to bend during the bending process, resulting in production stability. Poor, and the mold wears out quickly. In addition, the folding wrench formed by the traditional bending process has a larger volume and weight on the circumferential side of the bending hub, which increases the size of the bar, reduces the portability of the user to carry the appeal, and the peripheral side of the bending hinge Unable to achieve a flat appearance.

Please refer to the Republic of China Patent Publication No. 201117933 "Forming Method of Bicycle Repair Tool Assembly", which allows the wrench tools of different sizes to have a uniform appearance on the peripheral side of the hinge hole through milling, and has a flat appearance. However, this process uses CNC cutting to mill the outer side of the shaft to obtain a flat surface, which not only causes the production cost of the wrench tool to be too high, but also hardens after the flattening process, which is not conducive to the subsequent rotation of the shaft. Side milling planes and drilling hub holes and other cutting processes become unstable factors in the process, What is important is that a series of secondary machining processes required in the actual mass production will not only greatly increase the manufacturing cost, increase the required production time, but also affect the market willingness to consume.

Please also refer to the Republic of China Patent No. I369274 "Plipping tool and its bending process", which is used to flatten the bending end before the traditional bending process, and to use the stamping to remove the residual material and the like, also for obtaining the wrench tool. The peripheral side of the pivot hole has a flat surface appearance and a light weight appeal. However, the flattened plastic deformation process will cause the bending end to harden during the processing, which will also cause process defects in the bending process during the bending process, which may affect the stability of the production process. Process mold life is shortened and other issues. In addition, in the process of using general punching to remove the residual material, the higher the thickness of the punching, the more the trimming edge is produced, which not only affects the appearance of each wrench tool, but also requires additional trimming.

In view of the above-mentioned shortcomings of the prior art, the present invention discloses a folding repair tool process to overcome the defects of the conventional process technology and structure, with the practical experience accumulated in related industries.

The invention is a folding repair tool manufacturing process, the main purpose of which is to form a use section in a multi-stroke cold forging process, and a preset length bar having a square-shaped bent end, which is softened by annealing. Bending processing can make the folding wrench of different sizes obtain a uniform flat surface on the circumferential side of the bent end section, which is beautiful and does not hurt the hand, and the conventional technology is effective to reduce the volume and weight, and is convenient to carry and use.

The secondary object of the invention is to avoid the instability of work hardening after flattening in the prior art process, and the reduction process can form the folding wrench of the flat surface on the circumferential side without the need of the flattening and trimming process, thereby effectively reducing the folding wrench Cost and increase production speed.

In order to achieve the above objects and effects, the "folding repair tool process" of the present invention comprises the following steps: preparing materials, selecting a wire for use in a compatible multi-stroke cold forging process; and feeding, processing the wire by multi-stroke cold forging. Forming a suitable length of wire into a rectangular section of a bent section, a use section, and a connecting bend section and a use section of the shape transfer section to become a semi-finished product of the folding wrench; annealing, applying a folding wrench semi-finished annealing procedure, Reduce the hardness of the semi-finished structure of the folding wrench and eliminate the residual stress of the feeding process for subsequent processing; bending and bending the bending section to plastically deform the bending section to form a hinge hole and bend The circumferential side of the segment presents a flat surface.

The "folding repair tool process" of the present invention further includes the following technical features: * Performing a cutting process between the annealing and the bending process, which performs cutting and material removal on the shape transfer section, and cutting the shape at the end of the use section.

*Cutting is performed at the end of the section for cutting and forming. It is a tool head such as a hex wrench, a TORX wrench, a cross wrench or a flat wrench.

*Cutting includes cutting on the circumferential side of the shape transfer section or cutting on the opposite side of the shape transfer section.

* The section is shaped by hexagonal, circular or square.

The "folding repair tool process" of the invention is quite practical and innovative in use, and is worthy of promotion by the industry and is publicized to the public.

The above-mentioned objects, structures and features of the present invention will be described in detail with reference to the preferred embodiments of the present invention. .

The following is a description of the preferred embodiment, and is not intended to limit the invention in any way. Please refer to the first to fourth figures, the "folding repair tool process" of the present invention, which comprises the following steps: the preparation material S1, The wire 1 used in the compatible multi-stroke cold forging process is selected; the material S1 is processed, and the wire 1 is processed by multi-stroke cold forging, and a suitable length of wire 1 is formed into a bent section 11 having a rectangular section and a used section 12 And a connecting bending section 11 and the shape transfer section 13 of the segment 12 are used as a semi-finished product of the folding wrench; annealing S3, applying a semi-finished annealing S3 program of the folding wrench, reducing the structural rigidity of the semi-finished product of the folding wrench, and eliminating the S2 program Residual stress for subsequent processing; bending process S4, bending process S4 for the bending segment 11 to plastically deform, so that the bending segment 11 surrounds a hinge hole 14, and the outer surface of the bending segment 11 is flat surface.

The foregoing steps are the process steps of the main embodiment of the present invention, and the process steps and materials thereof have the necessary technical features to implement the main items of the patent application scope of the present invention, and the contents of the first item of the patent application scope of the present application are implemented. The technical features required for the content of the process steps of the present invention, and the technical features described in the remaining scope of the patent application are detailed or additional technical features of the first content of the patent application scope, and are not intended to limit the scope of the patent application. The scope of the definition of the item should be understood that the scope of the patent application in this case does not necessarily include the technical features described in the scope of the remaining subsidiary patents.

The folding repair tool process of the invention comprises the preparation material S1, the material S2, the annealing S3 and the folding In the step of bending processing S4, the wire 1 of a circular section is selected in the step of preparing the material S1; and the step S2 is performed in a continuous manner, and the wire 1 is placed in the stamping die through a plurality of passes, and is extruded. , cutting, stripping, etc., forming a suitable length of wire 1 into a rectangular section of the bent section 11, a use section 12, and a connecting bend section 11 and the use section 12 of the shape transfer section 13 The semi-finished product of the folding wrench; the semi-finished annealing S3 program of the folding wrench is applied to uniformly disperse the semi-finished carbide of the folding wrench, reduce the structural rigidity of the semi-finished product of the folding wrench, and eliminate the residual stress of the S2 program for subsequent processing, thereby improving the subsequent processing property. And the wear resistance of the final product; the bending process S4 is plastically deformed for the bending section 11 so that the bending section 11 surrounds a hinge hole 14, and the outer surface of the bending section 11 is a flat surface; In the invention, the wire 1 is made into the semi-finished product of the folding wrench by the material S2, and after the annealing S3 process, the subsequent bending process S4 is used to surround the bending section 11 around the pivot hole 14, and the bending section is processed after the bending process S4. 11 outside The surface is a flat surface, avoiding the conventional improvement technique 201117933, which is hardened in the flattening process, and the hub hole is not cut, and the outer side of the uniform shaft of the different size wrench needs to use an expensive CNC milling process and the like, and the invention does not need to be processed multiple times. The bending section 11 having a uniform flat surface on the outer peripheral side can be obtained, so that the manufacturing cost and the time required for manufacturing can be reduced, and the effect of not losing the hand and effectively reducing the weight of the folding tool can be obtained. The main purpose of the folding tool is to improve the defects of the traditional processing technology of Xi.

In addition, the present invention avoids the instability of work hardening after flattening on the process of the prior art I369274 by the steps of the preparation material S1, the material S1, the annealing S3, and the bending process S4, and the reduction process does not need to pass the pressure. The flat and trimming process can form a folding wrench on the outer flat surface, which can effectively reduce the cost and increase the production speed, and achieve the secondary purpose of the creation.

The folding repair tool process of the present invention further includes a step S5 of cutting, and is shown in the fifth figure of the drawing, which is a second embodiment of the present invention. The cutting process S5 is performed between the annealing S3 and the bending process S4, which performs cutting and material removal on the shape transfer section 13 and the end cutting forming process on the use section 12; wherein the cutting process S5 is opposite to the shape transfer section 13 Or the circumferential side cutting process, and the description of the end cutting machining of the use section 12 are as follows: * Cutting process S5 is performed on the opposite side of the shape transfer section 13: as shown in the sixth and seventh figures of the figure, due to folding The wrenches 15 are arranged to overlap each other, and an assembly gap is required, and a spacer 16 is installed between the pivot holes 14 of the adjacent folding wrenches 15, and the material is cut and unloaded in the shape transfer section 13 to avoid the thickness of the spacers 16. Exceeding the assembly gap of the folded folding wrenches 15 with each other, when one of the folding wrenches 15 is pulled, the process is not interfered by the adjacent folding wrenches 15 and cannot be stored.

*Cutting process S5 on the circumferential side of the styling transfer section 13: Please refer to the eighth and ninth drawings of the drawing, which is the circumferential side cutting process S5 of the styling transfer section 13 (here, the cutting process S5 is The turning method is an example), and the description can be used to assemble the adjacent folding wrenches 15 to maintain the assembly gap, so that the adjacent folding wrenches 15 can surely avoid assembly interference and unsmooth operation, whether in assembly or operation.

* For the use of segment 12 end cutting modeling: The present invention performs the end cutting modeling process on the end of the use section 12 by turning or milling to make a tool head such as a hex wrench, a TORx wrench, a cross wrench or a word wrench.

In addition, when the cutting process S5 is performed in the present invention, the shape transfer section 13 may be first cut or the end portion 12 of the use section 12 may be subjected to shape molding, and the order of the two may be reversed.

Finally, the assembled product of the folding repair tool is shown in Figure 11 and is worn through the shaft 21 The pivot hole 14 of the folding wrench 15 and the spacer 16 (the pivot hole 14 is not shown) are disposed, and the folded folding wrenches 15 are stacked in the tool holder 22, and the two sets of folding wrenches 15 are stacked on each other. The two sections are arranged in opposite directions, so that the folding wrenches 15 of different sizes and shapes have a uniform flat surface on the outer side of the bending section 11, which has an aesthetic appearance and does not cut the hand, and has the overall weight reduced and is convenient for carrying.

Further, the use section 12 of the present invention is formed into a hexagonal or circular cross section by the material S2.

The above is only a preferred embodiment for explaining the present invention, and is not intended to limit the invention in any way, so that any modification or alteration of the present invention made in the same spirit of creation is For other types that can be implemented and have the same effect, they should still be included in the scope of the intention of the present invention.

In summary, the "folding repair tool process" of the present invention is practically and cost-effectively, and is indeed fully in line with the needs of industrial development, and the disclosed structural creation is also an unprecedented innovative structure, so it has "newness" Sexuality should be undoubtedly considered, and the invention can be more effective than the conventional structure, and therefore has "progressiveness", which fully complies with the requirements of the application requirements of the invention patents of the Chinese Patent Law, and is a patent application according to law. Please check with the bureau for an early review and give it affirmation.

S1‧‧‧Material

S2‧‧‧

S3‧‧‧ Annealing

S4‧‧‧ Bending processing

S5‧‧‧Cutting

1‧‧‧Wire

11‧‧‧Bend section

12‧‧‧Use paragraph

13‧‧‧Model transfer section

14‧‧‧Pivot hole

15‧‧‧Folding wrench

16‧‧‧shims

The first figure is a flow chart of the folding repair tool of the present invention.

The second figure is a schematic view of the wire of the present invention.

The third figure is a schematic view of a semi-finished product of the folding wrench of the present invention.

The fourth figure is a perspective view of the finished product of the folding wrench of the present invention.

Figure 5 is a flow chart of a folding repair tool of a second embodiment of the present invention.

The sixth figure is a three-dimensional schematic diagram of the folding wrench of the present invention being stacked on each other by cutting.

The seventh figure is a schematic plan view of the folding wrench of the present invention which is stacked on each other by cutting.

The eighth figure is a three-dimensional schematic view of the folding wrench of the present invention through another cutting process.

The ninth drawing is a perspective view of the finished product of the folding wrench of the present invention.

The tenth figure is a perspective view of the folding wrench assembly of the present invention in the tool holder.

S1‧‧‧Material

S2‧‧‧

S3‧‧‧ Annealing

S4‧‧‧ Bending processing

Claims (6)

The utility model relates to a folding repair tool process, which comprises the following steps: preparing a material, selecting a wire used in a compatible multi-stroke cold forging process; feeding material, processing the wire by multi-stroke cold forging, forming a rectangular wire with a suitable length. The bending section of the surface, a section of use, and a connecting section of the connecting bending section and the using section become a semi-finished product of the folding wrench; annealing, applying a semi-finished annealing procedure of the folding wrench, reducing the hardness of the semi-finished structure of the folding wrench, and eliminating the warp The residual stress of the materializing program facilitates subsequent processing; the bending process is performed by bending the bending section to plastically deform, so that the bending section forms a hinge hole, and the outer surface of the bending section is a flat surface. The process of the folding repair tool according to the first aspect of the patent application, wherein the cutting process is performed between the annealing and the bending process, which is to cut and remove the shape transfer section, and to cut and shape the end of the use section. For example, the folding repair tool process described in claim 2, wherein the cutting process is performed at the end of the use section to perform a cutting design process, such as a hex wrench, a TORX wrench, a cross wrench or a word wrench. The folding repair tool process of claim 2, wherein the cutting process comprises cutting the circumferential side of the forming transfer section. The folding repair tool process of claim 2, wherein the cutting comprises cutting the opposite side of the forming transfer section. The folding repair tool process as described in claim 1, wherein the segment is formed into a hexagonal shape, a circular shape or a square shape by means of a material.