A disc-shaped blade used in a power tool includes opposite side faces and an outer circumferential zone having radially aligned, equally spaced notches extending outwardly from gullets to define arcuate blade segments spaced about the outer periphery of the disc-shaped body. A first composite mixture containing diamond particles of a first mesh size is electroplated to an outermost peripheral edge of each of the blade segments to provide a cutting edge. In one embodiment, a second composite mixture containing diamond particles of a second mesh size is electroplated to the opposite side faces of the blade for beveling cut ends of PVC and ductile iron pipe.




DESCRIPTION

BACKGROUND OF THE INVENTION
1. Field of the Invention

The present invention relates generally to circular saw blades and, more particularly, to a circular saw blade having an outer segmented rim which is electroplated with abrasive diamond particles to provide equally spaced arcuate cutting edge segments about the outer circumference of the blade and, an abrasive surface on opposite side faces of the blade for beveling cut pipe.

2. Discussion of the Related Art

Circular saw blades are used in many fields for cutting different types of material including wood, metal, concrete, PVC and the like. Of particular relevance to the present invention is the need to cut ductile iron pipe and PVC pipe as well as metal studs used for framing walls during construction.

Presently, ductile iron and PVC pipe are cut with the use of abrasive blades in power cutting tools. Typically, circular abrasive blades are 12′ or 14′ in diameter and consist of a central layer formed of aluminum oxide and silicon carbide resins, and reinforced fiberglass mats on each side to hold the core layer together. When used to cut PVC pipe, abrasive blades are generally effective and have good longevity. However, when abrasive blades are used for cutting ductile iron pipe, the cutting longevity drops drastically. Specifically, the cutting life of an abrasive blade used in cutting ductile iron pipe is approximately 7 to 9 minutes of cutting time before the blade needs to be replaced. Replacement of the blade requires approximately 6 to 8 minutes of labor. Thus, when using abrasive blades to cut ductile iron pipe, thirteen hours of cutting time will require approximately 100 blades and approximately 700 minutes (over 10 hours) of labor. Depending upon the geographical area of the country, the cost of the labor required for changing 100 blades may range between $275 to over $500. Furthermore, cutting ductile iron pipe with the use of abrasive blades presents serious safety concerns. In addition to unsafe flexing and possible disintegration of abrasive blades when cutting ductile iron pipe, the matting of the blade wears fairly quickly and, once this happens, the blade will come apart in chunks, putting anyone in the surrounding area at serious risk of injury.

Once ductile iron pipe or PVC pipe has been cut, the cut edge needs to be beveled. The proper and safe way to bevel the cut pipe involves the use of a hand grinder powered by a generator or air compressor located on the job site. Because this beveling operation is labor intensive and can be extremely expensive, particularly in union locations, many contractors, against recommendations of blade manufacturers, use the sides of the abrasive blade to bevel the pipe. However, because abrasive blades often flex during the beveling application, and sometimes break apart, this practice presents yet a further danger to anyone working near the beveling operation.

OBJECTS AND ADVANTAGES OF THE INVENTION
It is a primary object of the present invention to provide a blade for use in an electric power tool or gas powered high-speed saw for cutting and beveling ductile iron pipe and PVC pipe.

It is a further object of the present invention to provide a blade for use in an electric power tool or gas powered high-speed saw for cutting and beveling ductile iron pipe and PVC pipe and which provides a significantly larger number of cuts per blade (i.e. longer useful life) than conventional abrasive blades.

It is still a further object of the present invention to provide a blade for use in an electric power tool for cutting metal studs used for framing walls during construction.

It is still a further object of the present invention to provide a blade for use in an electric power tool or gas powered high-speed saw for cutting and beveling ductile iron pipe and PVC pipe while providing a significantly reduced cost per cut when compared to conventional abrasive blades used for the same purpose.

It is still a further object of the present invention to provide an improved blade for use in an electric power tool or gas powered high-speed saw for cutting and beveling ductile iron pipe and PVC pipe, as well as metal studs, and wherein the blade significantly reduces labor costs.

It is still a further object of the present invention to provide a segmented and electroplated diamond blade which is specifically designed for use in cutting and beveling ductile iron pipe and PVC pipe, as well as metal studs, and wherein the blade is specifically structured to resist cracking, fracture, and potentially harmful disintegration during use.

It is still a further object of the present invention to provide a blade for use in an electric power tool or gas powered high-speed saw for cutting and beveling ductile iron pipe and PVC pipe at a faster rate then conventional abrasive blades.

It is still a further object of the present invention to provide a blade for use in an electric power tool or gas powered high-speed saw for cutting and beveling ductile iron pipe and PVC pipe and which will last the life of at least 100 conventional blades.

It is still a further object of the present invention to provide a blade for use in an electric power tool or gas powered high-speed saw for cutting and beveling ductile iron pipe and PVC pipe and wherein the labor saved by not having to change the blade as often as conventional abrasive blades results in savings which account for at least 50% of the cost of the blade.

It is still a further object of the present invention to provide a blade for cutting and beveling ductile iron pipe and PVC pipe, as well as metal studs, and wherein the blade eliminates the dangerous carcinogens produced from abrasive blades, while providing a much cleaner working environment.

It is still a further object of the present invention to provide a blade for cutting and beveling ductile iron pipe and PVC pipe and wherein the blade is not affected by water on maintenance projects (e.g. broken mains in cities).

These and other objects and advantages of the present invention are more readily apparent with reference to the following detailed description.

SUMMARY OF THE INVENTION
The present invention is directed to a disc-shaped blade for use in a power tool. The blade includes opposite side faces and an outer circumferential zone having radially aligned, equally spaced notches extending outwardly from gullets to define arcuate blade segments spaced about the outer periphery of the disc-shaped body. A first composite mixture containing diamond particles of a first mesh size is electroplated to an outermost peripheral edge of each of the blade segments to provide a cutting edge. In one embodiment, a second composite mixture containing diamond particles of a second mesh size is electroplated to the opposite side faces of the blade for beveling cut ends of PVC and ductile iron pipe.

Previous:One kind of hot press diamond blade Next:Set diamond blade

Thank you for your interest in the above content, please leave us inquiry, you can expect a response within 24 hours.
Required fields are marked *


Name *:
Email *:
Phone :
Message *:
ip:
riqi:
yemian:
yemian: Click image to refreshClick the picture to refresh
 
7 steps diamond polishing pad for granite marble stone polishing
7 steps diamond polishing
Buy best arix segment for diamond core drill bit from China professional factory
Buy best arix segment for
Vacuum brazed diamond wire saw rope for reinforced concrete and Steel
Vacuum brazed diamond wir
Granite marble stone diamond cutting wire saw
Granite marble stone diam

conatct us

Tel: +86-595-2288-5227(Ext:2)
Mob: 0086-133-2887-5227 WhatsApp/Wechat
Email: sales@diamond-blade.org

Copyright © 2006-2023.China(Quanzhou) Diamond Saw Blade Association All Rights Reserved. Email:sales@diamond-blade.org