JPS62157720A - Production of steel plate for saw - Google Patents

Abstract

PURPOSE:To obtain saw teeth excellent in cutting quality by forming grooves with a predetermined width on both the front and back faces at the center of a base material to be used as a blade tip, inserting extremely hard blade tip materials into the grooves and heating and pressing and cutting the base material and blade tip materials at the center where the blade tip materials are stuck. CONSTITUTION:Grooves 3 are formed at the center of a base material 1, and blade tip materials 2 with a thickness slightly protruding from the base material surface are inserted into the grooves 3. The blade tip materials 2 are temporarily stuck to the base material 1 by spot welding 6 or with an adhesive. Under this condition, the base material 1 and blade tip materials 2 are heated at a high temperature suitable for pressure welding and are pressurized by a pair of rollers 7, 7. Then, both of them are provided with the same plane and also are firmly stuck due to the deformation of the base material 1 or the blade tip materials 2. Accordingly, the joint can be reliably stuck without displacement. Saw teeth, particularly the top of tips, can be formed with a blade tip material excellent in cutting quality and preferable as a cutting tool, which has been hard to attain in the past.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a steel plate that serves as a blade plate for a saw, especially a hand saw or a jigsy. This invention relates to a method of manufacturing a steel plate that can be made of any material.

[Conventional technology]

Hand saws swing the saw teeth alternately on the left and right at each glance to form a sharp cutting edge (top) on the outer side.Using the thickness of the blade plate, cutting is performed alternately on the left and right to create a top on the outer side. It forms and has the same effect as tooth swing.

In addition, in conventional hand saws, the blade plate itself is relatively thin, so the blade tip is not made of a different material, and the entire blade is usually made of a material such as tool steel. .

[Problem that the invention seeks to solve]

Conventional saws that were made entirely of the same material had the disadvantage that if a hard material was used to make the blade sharper, the blade plate would easily break, and if the blade was made of a material that was less suitable for comparison, the blade would have a poor cutting quality.

Furthermore, it has not been possible to take effective measures to make only the sawtooth portions of a different material because the blade plate itself is thin.

In view of these points, the present invention has devised a method for manufacturing a steel plate for saws in which the saw teeth, particularly the most important top portion, can be made of another material suitable for the cutting blade.

[Means for solving problems]

Steel plates for saws consist of a base material (1) that becomes the blade plate (saw blade) and a cutting edge material (
2), and the cutting edge material is bonded to both sides of the negative end of the base material fl).

To join the cutting edge material (2) to the base material (1),
Grooves (3), (3) with a width that is equal to the width of the cutting edge material are formed on both the front and back sides of the central part of the base material (1), which has a width more than double the width,
A band-shaped cutting edge material (2) is fitted into this groove (3).

Then, the base material (1) into which the cutting edge material was fitted was heated, the cutting edge material part was pressed, and after the two were crimped, the cutting edge material was cut at the center, and the cutting edge material was bonded to both sides of the - side edge. Obtain measuring steel.

[For production]

When joining the base material (1) and the cutting edge material (2), the cutting edge material (2) is heat-pressed while being fitted into the groove (3) formed in the base material (1). It is joined without shifting from the predetermined position of the base material, and the groove (3)
The fine gaps on both sides of the blade are eliminated by the deformation of the base material and the cutting edge material due to pressure, and the blade is integrally joined.

To make a saw using a steel plate that is cut after the cutting edge material has been bonded and has the cutting edge material (2) bonded to both sides of the side edges, the saw teeth (4) are attached to the side edge portion where the cutting edge material is bonded. form. At this time, the outer part of the sawtooth (4), especially the top (5)
The saw teeth located on either the left or right side are formed of the cutting edge material, the cutting action of the saw is carried out by the cutting edge material, and the strength of the saw blade is borne by the base material (1).

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, an embodiment of the method for producing a steel sheet for use according to the present invention will be described based on the attached drawings.

According to the method of manufacturing a saw rope plate of the present invention, an iJl f3) of an appropriate width is formed in the center of a base material (1) having a width at least twice the width required for a saw blade plate, and A cutting edge material (2) is fitted into the blade plate, and the base material (1) is made of a material having suitable strength and characteristics as a blade plate, such as machine structural steel or stainless steel. On the other hand, the cutting edge material (2) is made of a material that is excellent in cutting properties, such as high-speed steel. However, the base material (1) and the cutting edge material (2) can be arbitrarily selected as long as they can be joined.

Then, grooves (3
) The cutting edge material (2) to be inserted into the base material (1) should be thick enough to protrude from the surface of the base material, although in a very small amount. It is advisable to temporarily join the material (2) to the cutting edge material (2). In this state, the base material and the cutting edge material are heated to a high temperature suitable for pressure welding, e.g.
Pressurize with ,(?). Then, due to the deformation of the base material or the cutting edge material, the base material (1) and the cutting edge material (2) become flush with each other and at the same time are firmly joined.

In the illustrated embodiment, the width of the base material (1) is approximately twice the width of the saw, and it is divided into two parts, but it is made four times as wide, and cutting edge material is crimped on both the front and back surfaces of the two parts. may be divided into four parts.

In addition, the width of the cutting edge material (2) is at least twice the height of the saw tooth, so that the entire outer surface of the saw tooth (4) becomes the tooth tip material, but the width of the cutting edge material (2) is smaller than this, and the width of the saw tooth is Only the tip portion may be formed of tip material.

The saw shown in Fig. 2 is an example of a saw made using a steel plate made by the manufacturing method according to the present invention. A saw blade is formed in which the top (5) is positioned alternately on the left and right in the thickness range of It can also be applied to devices that swing the teeth alternately on the left and right sides.

This is possible when the cutting edge material (2) is made of a material that can be bent, or when the cutting edge material is made small, that is, has a narrow width, and the proximal end of the sawtooth (4) is made of a bendable base material. A case may be considered in which it is formed so that it is formed.

[Effects of the Invention] According to the manufacturing method of the steel plate of the present invention, the cutting edge material is joined to both the front and back sides of one side edge of the base material, and this joining is performed reliably and firmly without shifting the position. It is possible to make the serrations, especially the top of the tip, which has been difficult in the past, into a sharp cutting edge material suitable for use as a cutting tool. This cutting edge material has the advantage that even materials that are difficult to process can be used as saw blades.

In addition, the saw made by the method of manufacturing the steel plate for the side of the present invention has excellent strength as a whole and is made of an inexpensive material as a base material, making it durable, and at the same time, the saw blade is sharp and the core of the saw tooth is is formed from the base material, and there is less possibility of tooth spillage, which is a drawback of high hardness materials.

[Brief explanation of drawings]

The attached drawings are for explaining the manufacturing method of the steel plate according to the present invention. Figures 1 (a) to (d) are perspective views showing the process order, and Figure 2 is a diagram showing the method of manufacturing the steel plate according to the present invention. 1 is a sectional view showing an example of a saw. (1) Base material, (2) Tip material, (3)
-Groove, (4)...sawtooth, (5)...top. Patent applicant: Kaneka Trowel Industry Co., Ltd. (2 idiots)

Claims (1)

[Claims] 1. Form grooves (3), (3) of a predetermined width on both the front and back sides of the central part of the base material (1), which will become the blade plate, and fill the grooves (3) with high-hardness cutting edge material (2), (2). A method for manufacturing a steel plate for saws, which comprises: fitting and heat-pressing the steel plate, and then cutting at the central part where the cutting edge material is joined.