JP3130755U - Long-lasting mowing circular saw - Google Patents

Abstract

[PROBLEMS] To keep a sharpness for a long time by minimizing chip breakage due to stone or concrete in a mowing circular saw with a carbide tip.
SOLUTION Stone and concrete are pulverized at part A, grass is cut at the parts of blades B and C, and a shape that can be easily re-polished. And he worked to alleviate the impact force through a rubber plate on the mowing machine's attachment part to the mower.
[Selection] Figure 1

Description

Detailed description of the invention

Device for mowing circular saws with carbide inserts to strengthen the cutting edge

When cutting a vacant lot, stone wall, road or important wall near the cutting edge, a hard tip such as a stone hits the cutting edge to prevent the sharpness from dropping. For example, there are technologies such as (Patent Document 1) and (Utility Model Document 1).

Application Number Patent Application No. 11-318545 Publication number Patent publication 2001-128530
Applicant Inventor of Nikko Manufacturing Co., Ltd. Yukio Fukumoto One other name of invention Carbide cutting blade for brush cutter

Utility model document 1

Application Number Utility Model Application No. 102901
Registration number Registered utility model No. 3053659 Right holder of utility model Kanagawa Saw Industry Co., Ltd.

Problems that the device tries to solve

  Currently, we use a circular saw with a cemented carbide tip to cut weeds that grow on roads and stone walls, large and small stones, and vacant lots where garbage is scattered. It will fall, and if you hit a big stone, the hard tip will also fly away. This is very dangerous and has a problem in terms of safety management for workers. This is devised for the realization of a long-lasting mowing circular saw, preventing this by the shape of the chip and the method of attaching the circular saw to the mowing machine.

Means to solve the problem

The shape of the cemented carbide chip and the brazing method to the base plate, and the mowing circular saw are attached to the mowing machine through a rubber plate.

As shown in [Fig. 1], the tip A of the carbide tip is left, the B part is cut off at an angle of about 30 degrees, and then cut through the base plate part C to D, and the same is cut from the back side as well. The angle of the blade is 60th, and the brazing of the tip to the base plate is performed by setting the tip and the base plate to an outer peripheral circle on the same plane, and the clearance angle at the conventional blade tip shown in Fig. 2 Do not add E. The mowing circular saw is attached to the mowing machine through a rubber plate F as shown in FIG.

Effect of device

Many conventional circular saws with cemented carbide tips are perpendicular to the ground, so the blades move parallel to the grass. The efficiency is low and there are many uncuts. In the present invention, the blade created by the chip base plate moves horizontally with respect to the ground. The grass that hits part A shown in [Fig. 1] is cut cleanly from B to C and to D. Absent. Parts B and C in [Fig. 1] are scraped at an angle of 20 ° to 30 ° with respect to the disk surface. The same is done from the back. The angle between the two blades is set to 40 ° to 60 ° to match the situation in the field. The angle of the blade can be selected, and in the case of re-polishing the tip and base plate blades, it can be easily sharpened with a kamaboko-shaped diamond wheel. The deadly part of the conventional mowing circular saw is that there is a blade for mowing the grass where the stones and concrete are most likely to collide. As shown in Fig. 2), the A part is not attached with a blade, and it is made to be a strong shape with little damage. The brazed part of the tip is shown in [Fig. 2]. The tip of the blades B and C in [Fig. 1] starts from the vicinity of the outer periphery, so that the portion A is smaller. Therefore, at the site where there are few stones and concrete, the sharpness of the grass is improved and the efficiency is improved. Conversely, if the beginning of B and C is separated from the outer periphery, the portion A spreads and it can cope with severe conditions with many stone walls and rubble . As shown in [Fig.4], the mowing circular saw is fixed to the mower by using the rubber plate F, and when the blade hits the stone, it can absorb the impact and prevent the chip from being damaged. The combination of the above ideas has resulted in the birth of a long-cut mowing circular saw that is hard to fly.

Figure of chip shape of the present invention <A> ... Carbide chip <I> ... Base plate Appendix A is the part that crushes stones. Appendix B. C. And D are the parts that cut the grass. The tip E of the cutting edge part of a conventional mowing circular saw with a tip is the clearance angle of the cutting edge. Illustration of the mower circular saw installation part of the mower. Appendix F is a rubber plate for shock absorption

  A device for cutting mowers with cemented carbide inserts to reinforce the cutting edge

  In cutting grass near vacant lots, stone walls, roads, and important walls, a hard tip such as stones is attached to the cutting edge to prevent the sharpness from falling. For example, there are techniques such as (Patent Document 1) and (Utility Model Document 1).

Application No. Patent Application No. 11-318545 Publication No. Patent Publication No. 2001-128530 Applicant Nikko Seisakusho Co., Ltd. Inventor Yukio Fukumoto One Other Name of Invention Carbide Cutting Blade for Temporary Payment Machine

Utility model document 1

Application Number Utility Model Application No. 102901
Registration number Registered utility model No. 3053659 Right holder of utility model Kanagawa Saw Industry Co., Ltd.

Problems that the device tries to solve

Currently, we use a circular saw with a cemented carbide tip to cut weeds that grow on roads and stone walls, large and small stones, and vacant lots where garbage is scattered. I will. If you nest and hit a big stone, a hard tip will blow off, and this is prevented by the shape of the tip and the method of attaching the circular saw to the mower, and it is a device for realizing a permanent cutting mower.

Means for solving the problem

  The shape of the cemented carbide chip and the brazing method to the base plate, and the mowing circular saw are attached to the mowing machine through a rubber plate.

  As shown in FIG. 1, the tip portion A of the cemented carbide tip is left and the portion B is cut off at an angle of about 30 degrees, and then cut down to the location B through the base plate portion C. The blade is attached at an angle of about 60 degrees. Brazing of the chip to the base plate is performed through the rubber plate f as shown in FIG.

Effect of device

  Many conventional circular saws with cemented carbide tips have a blade at the tip perpendicular to the ground and the blade moves in parallel with the grass. The blade created by the chip and the base plate moves horizontally with respect to the ground, and the grass that hits the part A shown in FIG. 1 cleans from B to C and then to D. There is no remnant in the structure to be cut. The parts B and C in FIG. 1 were cut at an angle of 20 ° to 30 ° with respect to the disk surface in the same manner, and the angle formed by the double-edged blades was adjusted to 40 ° to 60 ° to match the situation at the site. You can choose the angle of the blade. In the case of re-polishing the tip and base plate blades, it can be easily sharpened with a kamaboko-type diamond grindstone. The deadly part of the conventional mowing circular saw is that the cutting edge is immediately cut off in severe places because the blade for cutting the grass is attached to the place where stones and concrete are most likely to collide. As shown in “FIG. 1”, the A portion is not attached with a blade and is made to have a strong shape with little breakage, and the brazed portion of the tip is provided with a clearance angle E on the conventional blade edge shown in “FIG. 2”. The chip does not protrude from the base plate, and only the compressive stress is applied to the chip in the same way as the outer periphery. Also, as shown in Fig. 1, the part A is small and there is less stone and concrete. Then, the sharpness of the grass is improved and the efficiency is improved. Conversely, if the start of B and C is separated from the outer periphery, the portion A can be expanded to cope with a severe situation where there are many stone walls and rubble. As shown in FIG. 3, the mowing circular saw is fixed to the mowing machine through the rubber plate F, and when the blade hits the stone, the impact is absorbed and the chip can be prevented from being damaged. The combination of the above ideas has resulted in the birth of a long-cut mowing circular saw that is hard to fly.

Diagram of the shape of the chip of the present invention <A> ... Carbide chip <I> ... Base plate code A is a part for crushing stones, etc., B, C, and D are parts for cutting grass, The symbol E for the blade part of a conventional cutting mower with a tip is the clearance angle of the cutting edge. Illustration of mower circular saw mounting part of mower, Fugo F is rubber for shock absorption

Explanation of symbols

＜A＞ ・ ・ ・ ・ ・ ・ ・ ・ Carbide carbide tip of silicone carbide ＜ I ＞ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Steel A of mowing circular saw A ・ ・ ・ ・ ・ ・ ・ ・ Stone Part B, C, D for crushing, etc. Part F for mowing grass, etc .... Rubber washer

Claims (2)

Tip shape, brazing method to base plate and how to attach blade in mowing circular saw with carbide tip How to attach a mowing circular saw to a mower

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