JPS6040246A - Composite material for tool having excellent vibration-damping property - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite material for tools that has excellent vibration damping properties, and more particularly to a composite material for tools that has a laminated structure and has excellent vibration damping properties.

In recent years, legal regulations regarding factory noise and vibration have become stricter, and how to suppress the noise and vibration generated when cutting or processing hard materials such as metal or stone has become a major issue. Composite vibration-damping steel plates with resin sandwiched between steel plates are well known as having a vibration-distributing effect. Tool steels used for cutting and processing metal and stone materials are Composite vibration-damping steel plates were considered unsuitable because the temperature rises, cutting oil and water are constantly used, and the sharpness required for tool steel is required.

An object of the present invention is to provide a composite material for tools that has excellent vibration damping properties without impairing its original function as a tool steel even under the above-mentioned severe usage conditions.

The above objects of the present invention are achieved by the following two inventions.

The gist of the first invention is as follows, that is, a composite material for tools with excellent distribution properties characterized by being made of a laminate of a plurality of tool steels and integrated by spot welding or seam welding. It is.

The gist of the second invention is as follows. In other words, it is a composite material for tools that is characterized by being made of a laminate of a plurality of tool steels and sandwiched metals, and is integrated by spot welding or seam welding.

In the present invention, tool steel is made into a composite laminated plate to provide structural vibration distribution properties, and furthermore, by using another tool steel or a vibration-proof alloy as a sandwiching material, the tool steel can be used even under the above-mentioned severe usage conditions. It has allocability without impairing its original function, and is manufactured into an integrated laminate using a relatively simple method such as spot welding or seam welding.

The details of the invention are illustrated by the following various examples.

Example 1 Figure 1 shows a cutting bar fl. 150 mm in length, which was assembled by two people using a 10 mm thick tool steel plate with a J142 B tool of two different thicknesses and spot welding. Welding is performed at five spot welding points 4. Various tests were conducted on this cutting tool, and it was found that the noise during cutting was lower than that of conventional cutting tools with a single structure, and the effect of the allocability was recognized. Moreover, the sharpness is comparable to that of the conventional single-structured one.Example 2 This example is a band saw as shown in FIG.
As shown in the enlarged figure (b), tool steel 2 with a plate thickness of 0.8 m
A Cu-based material 6 with a thickness of 0.5 mm and having vibration damping properties is sandwiched and integrated by spot welding.

A strip-shaped test piece was cut out using a band saw, and its vibration was investigated using the mechanical impedance method. The loss coefficient was approximately 0.05 at 20°C, and the loss coefficient was approximately 0.05 at 20°C.
It is several tens of times larger than that of a conventional band saw, which shows that it has excellent allocating properties.In addition, when cutting steel materials with this band saw, the noise is reduced and the working environment is significantly improved, and its lifespan is also longer than that of a conventional single-structure band saw. It was unattractive compared to.

Example 3 In this example, a tool steel 2.0 mm (2.0 mm) 9-mm was machined to an illumination diameter of 1200 mm using a circular saw as shown in Fig. 3.
As shown in the enlarged view of Fig. 1Jl, a Cu-based material 6 with a thickness of 0.5 mm with distributive properties is sandwiched and seam bath bonded to form an integral structure. One day, the attachment is through the hole 8 and the two circular side seam weld lines 10 on the outside.

A strip-shaped test piece was cut out using a circular saw, and its vibration was investigated in the same manner as in Example 2. It was found that the test piece had a loss coefficient of 0.05 at 20°C, indicating excellent vibration distribution. When cutting wood into rounds using this circular saw, the metal noise emitted during cutting was reduced compared to conventional methods, and the working environment was significantly improved. Note that the life of the circular saw of this example was almost the same as that of a conventional single material, and there were no problems.

Example 4 This example relates to a cemented carbide tool bit for machining extremely hard materials. Length 150-1 as shown in Figure 4
The tool steel 2 with a thickness of 10mm is sandwiched with a Cu-based material 6 with a thickness of 0.5cm which has vibration damping properties, and is integrated by spot welding to form a laminate. 1
Compared to the conventional cemented carbide alloy with a composite layer attached with 2) + n, the sharpness was of course unchanged, and the vibration noise during cutting was reduced.

Example 5 This example is also a circular saw, but the cutting edge part is made only of tool steel, and only the middle part is sandwiched with a distributable metal.

That is, as shown in Fig. 5, the diameter is 1200 gourd and the thickness is 2.
．． Otm's tool fi'l 2 has a slightly smaller diameter and vibration damping properties of 0.5 t! In Fig. 5, the diagonally shaded area is where the Cu-based material 6 is sandwiched between n-thick Cu-based material 6 and made into an integral laminate by seam bath welding, and then induction hardened at the cutting edge. It is the part of the laminated body covered with
The outer cutting edge part is not sandwiched.

Although this example does not have a distributable metal sandwiched between the cutting edge, noise and vibration during cutting were reduced. In addition, the cutting edge can be used by re-sharpening, ensuring good sharpness and sharpness at all times.

As is clear from the many embodiments described above, the present invention is achieved by integrating a plurality of tool steels or a plurality of tool steels sandwiching other metals into a laminate by spot bath welding or seam welding. It was possible to obtain a composite material for tools with excellent vibration properties, and the effect of reducing noise and vibration during tool use was achieved.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a cutting tool according to an embodiment of the present invention;
Figure (A) shows the belt V of the embodiment of the present invention. Figure 3 (5) is a plan view showing a circular saw according to an embodiment of the present invention, Figure 3 (5) is a perspective view without showing;
4 is a perspective view showing a cemented carbide cutting tool according to an embodiment of the present invention, and FIG. 5 is a plan view showing a circular saw according to another embodiment of the present invention. . 2 (2A, 213)... Tool steel 4... Spot welding point 6... Cu-based H material 8...
Hole 51 10 Seam weld line 12 Cemented carbide agent Patent attorney Takeo Nakaji Figure 1 (A) Figure 3 Figure 4m

Claims (2)

[Claims] (1) A composite material for tools with excellent allocability characterized by being made up of a J-shaped body made of a plurality of tool steels and integrated by spot welding or seam welding. (2) A composite material for tools with excellent distribution properties, which is made of a laminate of a plurality of tool steels and sandwiched metals and is integrated by spot welding or seam welding.