JPS6228127A - Manufacture of tool with high accuracy - Google Patents

Abstract

PURPOSE:To obtain a built up tool maintaining high accuracy, by preparing the base material of a required quality through a required heat treatment to be electric discharge machined by a numerical control into a shape in accordance with a use and manufacturing each part. CONSTITUTION:A tool prepares by electric discharge machining a hold part 1, top part 5, space parts 4, 6, deformed part 2, point end parts 7, 3, etc. from a base material 9 applying a required heat treatment. While the tool enables the required base material to be piled and electric discharge machined, further the base material can utilize an optional material of steel, special steel, cemented carbide system, Ti system, ceramics system, etc. with utilization unable in the past.

Description

[Detailed Description of the Invention] [Technical Field of Industry] The present invention is directed to the manufacture of bin sets, benches, yatcos, and other tools having parts that require good quality, required shapes, and high precision shapes and dimensions. This relates to directly machining precision tools from appropriate materials.

[Issues to be solved with conventional technology]

The conventional method for manufacturing tools is to process rough-shaped parts of the required shape and dimensions of the tool from raw materials of the required material, heat-treat the parts as required, and assemble them. Therefore, in order to make precision tools, it is necessary to improve the precision of each part, integrate each part as much as possible in the design to improve precision - reduce the number of parts that need to be machined, and heat treatment before machining the final shape. The necessary processes were carried out with sufficient consideration and preparation to minimize aging deformation and final machining quantity and quality, and as a result of these efforts, a high-precision, high-precision tool was obtained. However, each part and the advanced processing and machining required for each part result in a relatively large cost increase. In addition, it requires several types of raw materials, several types of parts, several stages of heat treatment, and several stages of management, resulting in an overall high cost, which creates the problem of rationalizing these costs. .

[Technical means to solve the problem]

It is an object of the present invention to provide technical means for solving the above problems. In order to achieve the purpose, the present invention uses the minimum required base material in common, reduces the number of parts by making the parts concentrated to the minimum, and performs the minimum processing and minimum heat treatment. and to best accomplish this, at least a low number of, preferably uniform base materials are used. By electrical discharge machining from this base material, the base material is preferably tempered to correspond to final heat treatment, and then electrical discharge machined into the final shape, and the required parts obtained in this way are assembled.
Achieving the objectives of the invention.

[Example 1] Each figure in FIG. 1 (A), (B), (C), and (D) is
FIG. 2 is a side plan view showing a bottle set according to an embodiment of the present invention and an applied embodiment of the present invention; FIG.

FIG. 1(A) is a plan view of the base material before the tweezers 1 are cut out by wire-cut electric discharge machining from the base material 9 of the required material that has been subjected to the required heat treatment, and the clamping portion 1 and the top portion 5 of the tweezers.
In Figure (A), the spaces 4 and 6 are defined by the deformed part 2 and the tip (
Sakaibe) 3t-shown. (A) shows the same heat treatment applied uniformly to the entire base material 9, and (B), (C), and (D) show the same effect applied to the entire base material 9, especially the tip part 3. Furthermore, it has undergone hardening treatment or chemical resistance treatment depending on the application.

Wire cut electrical discharge machining is performed as in the embodiment shown in FIG. 11 is a guide 12 with a thin wire electrode
The workpiece is moved between the workpieces 9 with a predetermined tension and speed, and is machined facing the workpiece 9. The workpiece 9 has been subjected to the required heat treatment, and is fixed on the processing table 14 and subjected to NC processing.
Precise machining shape feed is given to the control device 15 to perform precise electrical discharge machining. Reference numeral 16 denotes a nozzle for supplying machining fluid, and a pulse power source 17 repeatedly discharges discharge to perform machining. Workpiece 9
is heat-treated in advance, and by finishing it with high precision into the required shape and dimensions by electric discharge machining, each required part of the tool to be manufactured can be machined with high precision.

[Example 2] As shown in FIG. 2(A), the tweezers clamping portion 1 and the top portion 5 are formed to form spaces 4 and 6, and the tip portion 3 and the opening lower portion are connected to each other. , wire-cut electrical discharge machining is performed to cut out the required material base material which has undergone the required heat treatment. Depending on the application, a portion is formed to have the tip portion 3 and the open lower portion shown in FIG. 3B or FIG. If you want to mass-produce the same shape and dimensions as shown in Fig. 2 (A), or if you want to improve the precision, and also perform automatic processing or numerical control processing, and uniformly adjust the required material 9, stacked plates. Therefore, when manufacturing each molded product, it is extremely easy to mass-produce the required products with the same shape and size and the same material using wire-cut electrical discharge machining.

As a specific example, parts manufactured and assembled using the conventional method have an accuracy of ±0.02 m, and the precision shown in Figure 1 (A) or Figure 2 (
A) The one according to the present invention shown in the figure is ±0.008! i has high accuracy.

[Example 3] The other tools shown in FIGS. 3 and 4 were modified by the means of the present invention.
A high-precision tool is manufactured by processing the parts 8 and 18 and the stopper 10 with high precision by electric discharge machining from a required tempered base material, and assembling each part while maintaining high precision. be able to.

〔effect〕

The present invention uses a base material of a desired material that has already been subjected to the required heat treatment, and automatically numerically controls the tool into a shape according to the application, using an integrated and logically designed tool. Electrical discharge machining can be used to easily manufacture highly accurate products without distortion caused by heat treatment, and precision tools for medical use, ME use, etc. can be easily obtained. Moreover, it can be easily mass-produced by stacking each part by wire cutting, which has the effect of lowering costs.

[Brief explanation of the drawing]

Figure 1 (A) is a plan view of one embodiment (tweezers) of the present invention, Figures 1 (B), (C) and (D) are side views of an applied embodiment, and Figure 2 (A) ) is a plan view of another applied example, and (B) and (C) are plan views showing changes in the tip. Figures 3 and 4 are applied examples. FIG. 5 shows an embodiment of wire cut electrical discharge machining. 1... Pinching part 2... Deformed part 3... Tip part 4, 6... Space part 5... Top part 7
...Opening 8...Tool patent applicant Bengami Japax Laboratory Co., Ltd.
Attorney Patent attorney Naka Nishi -@51 ^he^ha< Car Q bl procedure
Masashi Newa (self-motivated) @ Michibe Uga, Commissioner of the Patent Office1, Indication of the case 1985 Patent Application No. 166.9122, Name of invention Method for manufacturing tools with high precision3, Person making amendments case Relationship with Patent Applicant Address 5289-4 Michisho, Nagatsuta-cho, Midori-ku, Yokohama-shi, Kanagawa Prefecture Number of inventions to be increased by amendment “0” 5 Target of amendment Details of claims 1 of the invention in the specification Explanation 9 Drawings (1) The claims of the specification are amended as shown in the attached sheet. (2) After "Iru." in the 9th line of page 3, [the base material may be steel, special steel, carbide, Ti, Ti alloy, ceramic, etc., any material that could not be used in the past. materials are available. ” is inserted. (3) On page 3, line 11, [Electric discharge machining is performed, and after J, [
In addition, at least the friction surface is subjected to electric discharge machining, and " is inserted." (4) Insert the following between the second and third lines of page 6. [Example 4] As shown in Figures 6.7 and 8, the friction surfaces 20 and 21 where the pair of tool bodies 20 come into contact with each other are machined by wire-cut electric discharge machining or die-sinking electric discharge machining. ,
In particular, when finishing by re-machining, 20 to 40% of the depth RmaX of the discharge marks remaining from the previous machining is smoothed out to obtain a smooth surface. By making contact, the coefficient of friction can be extremely reduced, and a tool body 20 that can be opened and closed smoothly as if it were in roller contact can be obtained. In this way, when the tool body 20 is processed and formed by wire-cut electric discharge machining or die-sinking electric discharge machining, any material such as Ti-based, Ti-alloy-based, carbide-based, ceramic-based, etc. may be used in addition to steel material that has been heat-treated such as quenching in advance. The fact that it is now possible to commercialize products using materials that were previously unavailable is the same as in the case of making tools such as pliers and Yatko in Example 3. (5) "One embodiment is shown" on page 6, line 19. "One embodiment, FIG. 6, FIG. 7, and FIG. ” is corrected. (6) Add Figures 6, 7, and 8. [(1) The base material of the required material for the tool is subjected to the required heat treatment and refining, and then numerically controlled and electrical discharge machining is applied to the shape according to the application. A method for manufacturing a tool with high precision, characterized in that each required part of the tool is manufactured by processing the tool, and each of the parts thus obtained is assembled to maintain high precision. (2) A patent that manufactures each required part of a tool by precisely machining base materials of the required material, which have undergone the required heat treatment and refining, by stacking them, numerically controlling them into shapes according to the purpose, and performing electrical discharge machining. A method for manufacturing a tool with high accuracy as set forth in claim 1. (3) A method of manufacturing a tool with high accuracy according to claim 1, wherein electrical discharge machining is performed on at least the friction surface of the tool. ”;f to j” off 1”, t2 country

Claims (1)

[Scope of Claims] 1. A base material of the required material for the tool is subjected to the required heat treatment and tempering, and then numerically controlled and electrical discharge machining is applied to the base material to form a shape according to the intended use, thereby precisely machining the base material to meet the various requirements of the tool. manufacture parts,
A method of manufacturing a tool with high precision, characterized by assembling the thus obtained parts while maintaining high precision. 2. A patent claim that manufactures each required part of a tool by laminating base materials of the required material and subjecting them to the required heat treatment and refining, and performing numerical control and electric discharge machining to form a shape suitable for the intended use. A method for manufacturing a tool having high accuracy as described in item 1 of the scope.