- Maximum peripheral speed
- Circumferential speed
- Rotation speed (rotation speed)
- Fracture rotation peripheral speed
Maximum peripheral speed
The maximum peripheral speed must be strictly observed for safety reasons, and it is said that the maximum operating speed must not be exceeded under any circumstances. This is stipulated in Article 119 of the Occupational Safety and Health Regulations.
The maximum peripheral speed is the maximum peripheral speed that the grinding wheel can safely use, and is how many meters per second (m / sec).
It is displayed in the unit of.
Circumferential speed
It represents the length that the grindstone advances by rotating in 1 second. (Unit: m / sec)
Rotation speed (rotation speed)
The axis of the mounting tool represents the number of revolutions per minute.(Unit: r.p.m)
The relative formula of peripheral speed and rotation speed is as follows.
For example, what is the maximum number of revolutions that can be installed on a cutting wheel that displays a maximum peripheral speed of 80 (eg Kin no tamago 105)?
In the case of "Kin no tamago 105", you can see that it can be attached to a grinder up to 14,556 rpm.
Fracture rotation peripheral speed
The largest factor affecting the safety of the grinding wheel is the internal stress induced by the centrifugal force due to rotation.
If the peripheral speed gradually increases and this internal stress exceeds the inherent strength of the grinding wheel, the grindstone will break.
The peripheral speed of the grinding wheel at this time is called the "destructive rotation peripheral speed", and knowing this value is the basis for ensuring the safety of the grinding wheel.
The peripheral speed of the grinding wheel at this time is called the "destructive rotation peripheral speed", and knowing this value is the basis for ensuring the safety of the grinding wheel.
The maximum working peripheral speed of the grinding wheel is the breaking rotation peripheral speed divided by a certain safety factor, and all safety rules and standards for grinding machines and grinding wheels are set around this point. ..
When using a grindstone, for safety, check the maximum working peripheral speed displayed on the grindstone and the rotation speed of the tool used, and use it at a speed that does not exceed the "maximum working peripheral speed".
