JPS63139612A - Method of forming sticked blade edge of saw - Google Patents

Abstract

PURPOSE:To increase working efficiency, by a method wherein a rotary grinding brush formed by a synthetic resin filament mixed with grinding grain is learned against the back of a saw tooth, and by sticking of cutting material powder to the blade edge of a saw tooth, a sticked blade edge is rapidly formed. CONSTITUTION:Grinding filaments 3 formed by mixing grinding grain (b) in synthetic resin (a) are attached in an annular manner around a core 4 to form a rotary grinding brush B, which is rotated in the direction of an arrow mark C. A blade edge (1') is positioned so that it is polished by the filaments 3, and a saw A is moved in the direction of an arrow mark D. The blade edge 1' is polished from the tooth back 2' side toward the blade edge 1' side, and as a result, the blade edge 1' part is squeezed so that the blade edge is prevented from excessively cutting through the material. When, with this state, sawing is effected, cutting powder of a material is immediately welded to the blade edge 1' to form a sticked blade edge 3'. This constitution enables improvement of cutting capacity and durability.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (Field of Industrial Application) The present invention is a method for forming a built-up cutting edge of a saw for processing metal. Specifically, the present invention provides a method for rapidly forming a built-up cutting edge by appropriately abrading the cutting edge of the sawtooth using a rotating grinding brush.

(Conventional technology) When a saw for metal processing is cut by sharply polishing the cutting edge of the saw blade, the cutting edge digs into the hard material too much, causing the blade to chip. This will result in a chain reaction of the blade chipping and a complete loss of sawing ability, so perform a break-in operation in which the material is lightly pressed against the polished cutting edge to crush the cutting edge to the extent that it does not dig into the material. When this is done, the blade does not chip, and the powder of the cutting material is welded to the crushed edge part, forming a so-called built-up edge, which improves the blade durability of the saw (the problem that the invention aims to solve) However, when the cutting edge of the saw tooth is crushed to form a built-up cutting edge by the breaking-in operation as described above, the degree of tooth soaking varies greatly depending on the type of material, and in the case of hard materials such as 50C, 45C and stainless steel Although the blade collapses and a built-up edge is formed in a relatively short period of time, soft materials such as 5S41.33 have the problem that a built-up edge is not formed even after half a day of running-in.

The present invention was made in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide a method in which a rotating polishing brush is applied to the cutting edge of a sawtooth, and a built-up cutting edge is formed immediately after use.

1 Structure of the Invention (Means for Solving the Problems) The method for forming the structural cutting edge of a saw according to the present invention is to use a rotary grinding brush B formed of filaments 3 of synthetic resin mixed with abrasive grains.
is applied from the back of the saw blade 1 to the saw teeth 2 formed at predetermined intervals, the cutting edge A is slightly crushed, and a structured cutting edge C is quickly formed by adhesion of the cutting material powder to this part. This solves the problems of the conventional technology.

(Function) When forming a built-up cutting edge on a saw tooth using the method of the present invention described above, the rotary polishing brush B is placed in a position where the tip of the polishing line 3 grinds the cutting edge A of the saw tooth 2, and 1st by 5
When the saw 1 is rotated in the direction of the arrow in the figure and the saw 1 is sent in the direction of the arrow with respect to the rotating polishing brush B, the cutting edge A of the saw tooth 2 is moved from the tooth opening side to the cutting edge I by the rotating polishing brush B. As shown in Fig. 3, the cutting edges A of the saw teeth 2 are crushed one after another to prevent them from digging into the material, and when the saw 1 makes one cycle, the cutting edges A of all the saw teeth 2 are crushed. At this time, if the blade crushing operation is finished, and the saw 1 is set on a saw machine (not shown) to saw the material, the saw teeth 2 will cut the material without biting into it, and the cutting that occurs during cutting will A powdered material is attached to the cutting edge to form a structured cutting edge that is hard and has excellent durability.

(Example) Next, an example of implementing the method related to the present invention will be described based on the drawings.

In Figure 1 of the drawings, A is a saw such as a band saw or a circular saw, and a large number of saw teeth 2 are formed at predetermined intervals on the edge of a saw blade 1, and the cutting edge of the saw teeth 2 is sharply polished. When sawn with
To prevent the cutting edge A from digging into the material too much and causing the blade to chip, abrasive filaments 3 made of synthetic resin A mixed with abrasive grains are attached in an annular shape around the core body 4, as shown in Figure 2. The rotary polishing brush B formed by the above-mentioned method is rotated by the drive shaft 5 in the direction shown in FIG. When proceeding in the direction indicated by the arrow in the figure, the cutting edge A of the sawtooth 2 is ground from its tooth opening side to the cutting edge A side, and as shown in the enlarged view of the cutting edge A in Fig. 3, during cutting, Since the material is crushed to avoid biting into the material, when sawing using this saw 1, the cutting edge A will not be chipped due to biting, and the cutting powder of the material will be immediately welded to the cutting edge A, as shown in Figure 3. By forming a structured cutting edge in this way, a sawn material with excellent cutting ability and durability was created.

C1 Effects of the Invention The method according to the present invention uses a rotating polishing brush to grind the cutting edge of the sawtooth, so even in the case of a long band saw, the sawtooth cutting edge can be crushed within a few minutes, and the built-up cutting edge can be used as soon as it is used. This eliminates the need for a break-in operation, making it possible to significantly improve work efficiency.

By simply adjusting the tooth crushing time according to the number of saw teeth, anyone can easily perform appropriate tooth crushing on any saw, and the tooth crushing state can be delicately adjusted by increasing or decreasing the time.

It has the following unique effects.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of implementing the method according to the present invention. FIG. 2 is an enlarged cross-sectional view of polishing filaments constituting the rotating polishing brush used in the above. Figure 3 is an enlarged side view of a state in which a built-up cutting edge is formed in the part where the cutting edge is crushed by the same method as above. In the figure, A is a saw, 2 is a sawtooth, A is a cutting edge, the mouth is on both fronts, and C is a built-up cutting edge. It is.

Claims (1)

[Claims] A rotary grinding brush made of a synthetic resin wire mixed with abrasive grains is hung from the back of the saw teeth formed at predetermined intervals on the saw blade to slightly wear the cutting edge, and then the worn parts are quickly treated with a cutting material. A method for forming a built-up cutting edge of a saw, characterized by forming a built-up cutting edge.