TW201422413A - Tool molding method - Google Patents

Abstract

A tool molding method is capable of making a tool having an identification structure by subjecting a metal material to a production process of blank formation and processing treatment. The processing treatment comprises, in sequence, the following steps: a surface hardening step to enhance a surface hardness of the blank by heat treatment; an embossing step to form shallow grooves on a surface of the blank through the use of rolling or stamping equipment; and a coloring step to apply a pigment in the shallow grooves. Accordingly, the time interval required to form the shallow grooves a surface of a blank is less than the working hours that the prior art spends in making deep grooves and it is not easy to damage the structure of the blank. Further, the reduced depth of the shallow grooves reduces the amount of the pigment filled therein, thereby lowering the production cost and correspondingly enhancing the competitiveness in the tool market.

Description

Tool forming method

The present invention relates to a tool forming method.

In the assembly of equipment, equipment or equipment, bolts or nuts are usually locked or unscrewed by means of sleeves, hex wrenches, open-end wrenches or connecting rods.

Due to the metric and imperial specifications, many bolts or nuts of different sizes are produced. It is necessary to pick out the appropriate ones from a wide variety of tools, and it is a waste of time.

Thus, U.S. Patent No. 6,761,093 (same to Taiwan Announcement No. 507630), No. 7,010,998 (same as Taiwan Announcement No. 555626), and No. 7,543,366 (same as Taiwan Certificate No. I340063), etc., revealing metal materials through embryos Processes such as body forming, processing, etc., to create a tool with an identification structure.

In the processing procedure, there is an embossing step, which forms a deep groove on the surface of the embryo body by using one of rolling or stamping equipment, and the deep groove has a contour such as a character, a pattern, a symbol or a numeral, and serves as an identification structure for the embryo body to be visually recognized. The body of the body having the identification structure is surface-hardened by heat treatment, and in the subsequent coloring step, the pigment is sprayed throughout the deep groove.

However, this identification structure must be slowly pressed into the surface to avoid damage to the structure of the embryo and to relatively extend the processing time. Moreover, the amount of filling of the pigment into the deep trench increases with depth, so that the production cost remains high.

Even the applicant's US Patent No. 8,020,274 (same as Taiwan Public Publication No. 201024037) cannot overcome these problems.

Therefore, how to shorten the working hours and reduce the cost to enhance the competitiveness has become an urgent problem to be solved by the present invention.

In view of this, the inventors have intensively explored the problems of the prior art. With years of experience in research and development and manufacturing of related industries, and actively seeking solutions, the inventors have finally succeeded in developing a tool forming method to improve the problem of the conventional materials.

The main purpose of the present invention is to shorten the working hours and reduce the cost based on the original production process, and to change the order of certain steps, thereby improving the competitiveness of the tool market.

Due to the above object, the tool forming method of the present invention is still a production process for the metal material to undergo the molding and processing of the embryo body, and a tool having the identification structure is produced. The processing step includes the following steps: a surface hardening step of increasing the surface hardness of the embryo body by heat treatment; an embossing step, forming a shallow groove on the surface of the embryo body by using one of rolling or stamping equipment; and a coloring step of the pigment Coated in a shallow groove.

The shallow groove profile is selected from one of a group of characters, patterns, symbols or numbers, and serves as an identification structure for the embryo body to be visually recognized.

Thus, the time required to form the shallow groove on the surface of the embryo body is shorter than that of the prior art to form the deep groove, and the embryo body structure is not easily damaged. At the same time, shallower groove depth will reduce the amount of pigment filling, which can reduce the production cost and increase the competitiveness of the tool market.

Hereinafter, the objects, structures, and features of the related embodiments will be described in detail based on the drawings, and it is believed that the techniques, means, and effects of the present invention can be obtained from an in-depth and specific understanding.

Referring to Figure 1, the metal material is subjected to the production process of the body forming 10 and the processing 20 to produce a tool having an identification structure.

The aforementioned blank body forming 10 procedure consists of a blanking step 12 through a forging 14 step to a cutting 16 step. This process can be adjusted as needed, and other steps can be added.

In the step of blanking 12, the producer makes a production plan according to the order, purchases the required metal materials, and transports them to the production site by means of vehicles or other transportation machinery.

In the forging 14 stage, the forging press is used to pressurize the metal material to produce plastic deformation, thereby obtaining a forging piece that meets the requirements. The forging piece has certain mechanical properties, a certain shape and size.

Then perform the cutting 16 steps, using sawing, shearing, turning, drilling, milling, cutting, grinding, boring and other mechanical tools, equipment and tools, according to the required geometry and size, the forgings Part of the material is separated or removed to form a desired embryo body.

The surface of these embryo bodies is the boundary area between the inner material and the surrounding environment. Usually, the material of the outermost layer is submerged to several or several tens of μm (10 ^-6 m) thickness materials, which must be processed to improve the following Excellent state, such as: 1) increase mechanical properties such as surface hardness and wear resistance; 2) increase surface resistance to oxidation and corrosion; 3) increase surface heat resistance, heat conduction and heat reflection; 4) improve surface roughness To reduce the friction; 5) to improve the surface of the conductive properties; 6) to change the surface of the light reflection and selective absorption characteristics; 7) to improve the surface of the clean, shiny, color and aesthetics.

The embryo body referred to herein is a tool prototype selected from the sleeve body 30 (such as Figure 2a), the hexagonal wrench body 40 (as in Figure 2b), the open-end wrench body 50 (as in Figure 2c), and the connecting rod. The embryo body 60 (as in Figure 2d) constitutes one of the ethnic groups.

In order to help the reader understand the essence of the present invention, the sleeve body is taken as an example to specifically describe the production process of the embryo body as a tool.

The foregoing processing 20 process, starting from a surface hardening step, performing a series of steps of forming the identification structure of the sleeve blank body such as embossing 22, coloring 23 and vibration grinding 24, and obtaining a satisfactory condition after a plating step of 25 steps. The finished sleeve of the 18 is.

In the surface hardening step, the control of the permeation temperature and the adjustment of the cooling rate firstly increase the surface hardness of the sleeve body while changing properties such as toughness, stress (strain), ductility and elasticity, such as heat treatment 21. Simply put, the sleeve body is heated to a certain temperature, kept for a certain period of time, and cooled to room temperature or lower at a certain rate to improve the material structure and obtain excellent performance.

When the embossing 22 step is performed, a plurality of shallow grooves 31 are formed on the hard surface of the sleeve blank body 30 by one of the devices such as rolling or pressing, each of which The shallow groove 31 has a contour such as a character, a pattern, a symbol or a numeral, and serves as an identification structure for the embryo body to be visually recognized (as shown in Fig. 3). Since the roller body or the punch of the device is scribed with the desired protrusion on the side of the body, the protrusion has characters, patterns, symbols or numbers, and can be quickly pressed into the hard surface of the body to form a shallow groove. Naturally, it can shorten the processing time. In particular, the structure of the embryo body is not easily damaged by shallow grooves.

Next, the formulated liquid pigment 32 (as shown in Fig. 4) is applied to the shallow groove 31 of the sleeve blank 30 to complete the coloring 23 step.

The pigment 32, also referred to herein as a pigment, refers to a soluble or insoluble organic or inorganic substance that imparts a certain color to the shallow groove. In particular, the shallow grooves can reduce the amount of filling of the pigment 32.

Of course, the pigment 32 will inevitably overflow the outside of the shallow groove 31. As long as the vibration grinding 24 step, for example, the bead blasting method, is performed, the plurality of particles 33 are impacted at high speed and repeatedly against the surface of the sleeve body 30, and the excess pigment 32 overflowing the shallow groove is removed, but the bottom portion of the shallow groove is not touched, so that part of the pigment 32 is obtained. It remains in the shallow slot 31 (as shown in Figures 4 and 5).

At the same time, the particles impact on the surface of the embryo body of the sleeve, which will produce a haze effect of uneven deformation, so that the embryo body retains the residual stress of compression to improve the fatigue resistance, achieve derusting, deburring, deoxidation layer, friction coefficient adjustment, Precision adjustment, high adhesion, beautification and matting characteristics.

Then, the sleeve body having the identification structure is immersed in the plating solution of the container and coupled to the cathode of the plating apparatus, and the anode is bonded to the metal article which is also immersed in the plating solution to complete the preparation step of the plating step 25.

After energization, the electrons of the anode metal become cations, and a metal thin film 34 is formed on the surface of the sleeve blank body 30 covering the cathode except the pigment by using the plating solution as a medium (as shown in Fig. 5).

The power supply is interrupted, and the sleeve is taken out of the plating solution of the container to complete the finished product 18 having the identification structure.

Because the film adheres to the surface of the finished product 18 to emit metallic color, it produces a significant color difference compared with the pigment of the identification structure, improves the visual clarity, and easily recognizes the metric or inch size by recognizing the structure of the text, numbers or graphics, reducing the time spent searching. . Furthermore, the pigments of the identification structure are not easily stained or peeled off, and the period of clear identification is relatively extended.

In particular, the time required to form the shallow groove on the surface of the sleeve body is much shorter than the working time of forming the deep groove in the prior art, and it is not easy to damage the structure of the body. At the same time, shallower groove depth will reduce the amount of pigment filling, which can reduce the production cost and increase the competitiveness of the tool market.

According to the above steps, other tool forming processes can also be derived. For example, in the sixth drawing, the production process is different from the previous production process: a grinding step of 26, which is an auxiliary process belonging to the process of processing 20, and the surface of the body of the heat treatment 21 (surface hardening step) can be removed. Objects or burrs can also enhance surface adhesion.

The term "grinding" as used herein means that the high-hardness particles are fixed to the grinding wheel by the bonding material, and the surface material of the embryo body is removed by high-speed rotation.

The above examples are merely illustrative of the invention and are not intended to limit the invention. Various changes, modifications, and applications derived from the above-described embodiments will be apparent to those skilled in the art.

10‧‧‧ embryo body molding

12‧‧‧Unloading

14‧‧‧Forging

16‧‧‧Cutting

18‧‧‧ finished products

20‧‧‧Processing

21‧‧‧ heat treatment

22‧‧‧ embossing

23‧‧‧Coloring

24‧‧‧Vibration grinding

25‧‧‧Electroplating

26‧‧‧ Grinding

30‧‧‧Sleeve body

31‧‧‧ shallow groove

32‧‧‧ Pigments

33‧‧‧ granules

34‧‧‧film

40‧‧‧Hex wrench body

50‧‧‧Opening wrench body

60‧‧‧ Connecting rod body

Figure 1 is a flow chart of the first tool forming of the present invention.

The 2a, 2b, 2c, and 2d drawings are completed by the completion of the embryo body forming process. The prototype of the tool.

Figure 3 is a perspective view of the sleeve body of the embossing step.

Figure 4 is a schematic view of the action of the sleeve blank body completing the coloring step during the vibration grinding process.

Figure 5 is a partial cross-sectional view of the sleeve body of the plating step.

Figure 6 is a flow chart of the second tool forming of the present invention.

10‧‧‧ embryo body molding

12‧‧‧Unloading

14‧‧‧Forging

16‧‧‧Cutting

18‧‧‧ finished products

20‧‧‧Processing

21‧‧‧ heat treatment

22‧‧‧ embossing

23‧‧‧Coloring

24‧‧‧Vibration grinding

25‧‧‧Electroplating

Claims (10)

A tool forming method for making a metal material through a production process of forming and processing an embryo body to produce a tool having an identification structure; the processing step sequentially comprises the following steps: a surface hardening step: increasing the surface hardness of the embryo body An embossing step: forming a shallow groove on the surface of the embryo body; and a coloring step: coating the pigment in the shallow groove. The tool forming method according to claim 1, wherein the embryo body is a tool prototype, and is selected from the group consisting of a sleeve embryo body, a hexagonal wrench body body, an open-end wrench embryo body, and a connecting rod embryo body. The tool forming method according to claim 1, wherein the surface hardening step enhances the surface hardness of the embryo body by heat treatment. The tool forming method according to claim 1, wherein the embossing step is to form a shallow groove on the surface of the embryo body by using a rolling device. The tool forming method according to claim 1, wherein the embossing step is to form a shallow groove on the surface of the embryo body by using a punching device. The tool forming method according to any one of claims 1 to 5, wherein the shallow groove contour is selected from one of a group of characters, patterns, symbols, and numbers, and serves as an embryo body for visual recognition. Identify the structure. The tool forming method according to claim 6, wherein the coloring step is followed by a vibration grinding step on the surface of the embryo body The treatment is carried out while removing excess pigment from the shallow trough to keep some of the pigment in the shallow trough. The tool forming method according to claim 7, wherein the vibrating grinding step is a bead blasting method, so that the plurality of particles are impacted at high speed and repeatedly against the surface of the embryo body, and the excess pigment overflowing the shallow groove is removed, but the shallow groove is not touched. The bottom part keeps some of the pigment in the shallow groove. The tool forming method according to claim 7, wherein the vibration grinding step is followed by a plating step of forming a metal thin film on a surface of the embryo body other than the pigment. A tool forming method comprises: a blanking step: transporting the metal material to the production site; a forging step: pressurizing the metal material to produce a forging by using a forging machine; a cutting step: the forging forming the body; the surface hardening step: through the heat treatment Lifting the surface hardness of the embryo body; embossing step: forming a shallow groove for visual recognition on the surface of the embryo body; coloring step: coating the pigment in the shallow groove; shaking grinding step: treating the surface of the embryo body while removing the overflow Excess pigment in the notch allows part of the pigment to remain in the shallow groove; electroplating step: forming a metal film on the surface of the embryo body except for the pigment.