JPH0310717A - Manufacture of saw body and say body - Google Patents

Abstract

PURPOSE:To manufacture a saw body easy for cutting work by punching a normal circular or about circular hole on the part becoming the bottom between saw teeth later on, and making one part of the hole remaining as a recessed part on the bottom at the saw teeth forming time. CONSTITUTION:Prior to forming saw teeth 31 on a saw body 30 circular holes 32 are punched at the position becoming the bottoms between the saw teeth 31 later on. These holes 32 may be in a normal circle or about circular and even oval as occasions demand. The saw body 30 is ordinarily formed by rapping a tempered steel body and saw teeth are formed on the web of a rapped saw body. For the formation of the holes 32, the holes in the necessary number are punched at specific positions by a drill device, etc., simultaneously with die cutting time in case of punching the die of the saw body 30 form a strip like steel sheet. Otherwise the holes 32 are punched at the specific positions, namely the positions becoming the bottoms between saw teeth 31 by a drill device, etc., prior to the rapping of the saw body 30 or after the rapping. The saw teeth 31 are thus formed on the saw body 30 on which the holes 32 were opened in advance at the specific positions.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a saw blade, and particularly relates to an improvement in saw teeth formed on a saw blade.

<Prior Art> A saw is equipped with saw teeth suitable for its use. This is because the structure of the wood that the saw is trying to cut is not uniform, and a saw that cuts in a direction perpendicular to the grain (fibers) of the wood has horizontal cutting teeth 11 as shown in FIG. A saw that pulls in a direction parallel to the wood grain is generally provided with vertical teeth 21 as shown in FIG. 6, and a saw that draws in the direction of the wood regardless of the direction of the wood grain is generally provided with one loose tooth.

Conventional saw teeth, whether they are horizontal teeth as shown in Figure 5, vertical teeth as shown in Figure 6, or single loose teeth, are all different from saw teeth. The valley bottom 1 between the saw teeth is notched into a pointed shape.

<Problems to be Solved by the Invention> Regardless of the type of sawteeth, sawdust tends to dig into the valley bottom 1 cut into a pointed shape during cutting.

If sawdust is stuck in the valley bottom 1, the sawing resistance increases, which tends to adversely affect the cutting operation. especially,
In the case of so-called coarse saws with large saw teeth, the above-mentioned drawbacks are noticeable.

Therefore, an object of the present invention is to provide a method for manufacturing a saw blade that solves the above-mentioned problems and facilitates cutting operations, and a saw blade.

Means for Solving the Problems> This invention provides that prior to the formation of sawtooths, a perfect circular or approximately circular hole is bored in a portion that will later become the bottom of the valley between the sawtooths, and during the formation of sawtooths. A method for manufacturing a saw blade, characterized in that a part of the drilled hole remains as a recessed part at the bottom of the valley between the saw teeth.

Further, in the present invention, a portion that will later become a valley between saw teeth is recessed, and a hole that is connected to the recess is formed at the bottom of the portion that is to become a valley, and then a saw tooth is formed. This is a method for producing sawfish, which is characterized by the following.

Furthermore, this invention provides that each valley bottom between the saw teeth has a
It is characterized by having a loop-shaped recessed part formed therein.
It is a saw body.

Furthermore, the saw body of the present invention is characterized in that it is manufactured by the above-mentioned manufacturing method.

Effect> According to the saw blade manufacturing method according to the present invention, a new saw blade can be formed while using the conventional saw blade forming process as is.

That is, since it is only necessary to drill holes at predetermined positions prior to forming the saw teeth, the saw teeth can be formed in the same process as the conventional manufacturing process.

Further, in the saw blade according to the present invention, sawdust does not get stuck in each valley bottom between the saw teeth.

<Embodiments> Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial side view of a saw blade 10 according to an embodiment of the present invention. The saw body 10 is provided with horizontal pulling teeth 11 in a row.

The horizontal pulling teeth 11 include a front blade 12 formed in the sawing direction shown by arrow A1, a back blade 13 formed in the sawing direction shown by arrow A2, and a manual blade 14 formed at the tip. The tip 15 formed by the front blade 12 and the manual force 14 forms the top of the horizontal pulling tooth 11. This top 15 has a sharp convex point that is effective in cutting the grain of the wood.

The feature of this embodiment is that the adjacent horizontal pulling teeth 11 and the horizontal pulling teeth 11
A loop-shaped recessed part 16 is formed at the bottom of the valley between. As a result, sawdust does not dig into the bottom of the valley between the horizontal pulling teeth 11, and sawing can be carried out easily, and the cutting quality during sawing does not deteriorate.

Incidentally, depending on the type of the saw, the horizontal pulling teeth 11 may or may not be provided with a shaving.

FIG. 2 is a partial side perspective view of a saw body 20 according to another embodiment of the invention. Vertical teeth 21 are arranged in rows on the saw body 20.

The vertical pulling tooth 21 has a lower blade 22 whose surface is perpendicular to the sawing direction indicated by arrow A1. The lower blade 22, which is perpendicular to the sawing direction A1, is effective in cutting soft fiber layers and removing chips during shrinking work in which wood is cut parallel to the grain. On the other hand, when attempting to use it for horizontal sawing to cut wood grains, it is difficult to cut hard wood grains with the lower blade 22 whose surface is perpendicular to the sawing direction A1.

A feature of this embodiment is that a loop-shaped recessed notch 16 is formed at the bottom of the valley between the vertical pulling teeth 21 having the above-described structure. This prevents sawdust from biting into the bottom of the valley between the vertical pulling teeth 21, and the sawdust that has entered the loop-shaped recessed notch 16 is quickly removed.

FIG. 3 is a diagram for explaining a method for manufacturing a saw body according to an embodiment of the present invention.

Referring to FIG. 3, prior to forming the saw teeth 31 on the saw body 30, circular holes 32 are bored at positions that will later become the valley bottoms between the saw teeth 31. This hole 32 may be a perfect circle, a substantially circular shape, or an ellipse as the case may be.

Usually, the saw body is a hardened steel body (this is called a "hoop")
It is formed by cutting out a saw, and serrations are formed on the belly of the saw.

Therefore, when punching out the shape of the saw body 30 from a strip-shaped steel plate, it is preferable to form the holes 32 by simultaneously punching out the shape and drilling the required number of holes at predetermined positions using a drill device or the like.

Alternatively, before or after cutting out the shape of the saw body 30, the hole 32 is drilled at a predetermined position using a drill device or the like, that is, at a position that will later become the bottom of the valley between the saw teeth 31. You may.

In this way, saw teeth 31 are formed in the saw body 30 in which holes 32 have been pre-drilled at predetermined positions.

The saw teeth 31 are generally formed using a saw tooth forming device equipped with a disk-shaped diamond cutter. When the sawtooth 31 is formed, the hole 32 is partially left as a loop-shaped recessed part 16 (see FIGS. 1 and 2) at the bottom of the valley between the sawtooth 31. It looks like this.

In this embodiment, when the saw teeth 31 are formed using a disc-shaped diamond cutter, the holes 32 are formed in advance at the portions that should become the valley bottoms between the saw teeth 31. The blade can be reliably sharpened (sharpened) while cutting all the way to the desired part.

In addition, according to this manufacturing method, the conventional manufacturing process of forming saw teeth on the saw blade can be used as is,
The saw blade according to this embodiment can be easily manufactured by simply forming holes 32 at predetermined positions as a pretreatment for forming saw teeth.

FIG. 4 is a diagram for explaining a saw body manufacturing method according to another embodiment of the present invention.

This manufacturing method includes performing the following pretreatment on the saw body 30. That is, prior to forming the saw teeth 31, a substantially triangular recess 33 is formed in a portion that will later become a valley between the saw teeth 31, and a hole 32 is formed in series with the recess 33. form. The shape of this hole 32 may be any of a perfect circle, a substantially circular shape, and an elliptical shape.

This approximately triangular recessed part 33 and the hole 3 connected thereto
2, the hole 32 may be formed after the recessed portion 33 is formed, or the recessed portion 33 may be formed after the hole 32 is formed.

Alternatively, the holes 32 and the recessed portions 33 may be simultaneously punched out using a punching device or the like.

If such punching is to be performed, it may be performed at the same time as punching out the saw body 30 from the strip-shaped steel plate.

Then, the saw body 3 in which the recessed part 33 and the hole 32 are formed
The cutting process is performed on the original shape of 0 so that the recessed part 33 becomes the valley of the sawtooth 31.

Even in this case, when processing the blade, that is, sharpening, a hole 3 is formed at the bottom of the valley between the saw teeth 31.
2, the sawtooth 31 has the advantage that it can be reliably and neatly sharpened down to the bottom of the valley.

The saw blade produced in accordance with the above-mentioned embodiments exhibits particularly favorable effects when used for coarse-grained saws.

This is because coarse-grained saws are generally used to cut wood with highly sticky fibers, such as raw wood, and such wood fibers are This is because it often gets stuck between the serrations and the serrations.

The above explanation has been made using the saw of a hand saw as an example, but the saw body manufacturing method and the saw body according to the present invention are as follows:
I would like to mention that this can also be applied to band saws.

<Effects of the Invention> Since the present invention is configured as described above, in addition to the conventional saw blade manufacturing method, it is possible to easily create a new saw blade by simply performing a simple pre-operation called drilling. You can manufacture your own body.

Further, according to the present invention, it is possible to provide an easy-to-use saw blade and a saw in which sawdust does not get stuck between the saw teeth during sawing work.

[Brief explanation of drawings]

FIG. 1 is a partial side view of a saw blade according to an embodiment of the present invention. FIG. 2 is a partial side perspective view of a saw blade according to another embodiment of the invention. FIG. 3 is a diagram for explaining a method for manufacturing a saw body according to an embodiment of the present invention. FIG. 4 is a diagram for explaining a saw body manufacturing method according to another embodiment of the present invention. FIGS. 5 and 6 are diagrams for explaining conventional horizontal saw blades and vertical saw blades. In the figure, 10, 20.30... Nokomi, 11...
・Horizontal drawing tooth, 16... Loop-shaped recessed part, 21... Vertical tooth, 31... Sawtooth, 32... Hole, 33... Recessed part. 63: Concave notch

Claims (4)

[Claims] (1) Prior to the formation of serrations, a perfect circular or approximately circular hole is drilled in the part that will later become the valley bottom between the serrations, and during the formation of the serrations, the hole is drilled in the bottom of the trough between the serrations. . A method for manufacturing a saw body, characterized in that a part of the drilled hole remains as a recessed part. (2) The part that will later become the valley between the sawtooths is recessed, and a hole connected to the recess is formed at the bottom of the part that will become the valley, and then the sawtooth is formed. characterized by
How to manufacture sawfish. (3) A saw blade characterized in that a loop-shaped recessed part is formed at the bottom of each valley between the saw teeth. (4) The saw body according to claim 3 is produced by the method according to claim 1 or 2.