The best setting for an optimum functional speed can often only be determined after briefly testing the chosen tool on the relevant work piece, particularly if it is important to improve the visual appearance of the work piece.

Advice:

1. The lower the working speed, the longer the life-span of the tool.
2. The higher the working speed, the greater the grinding effect, the shorter the life-span of the tool.

The feed rate determines the speed at which the work piece is conveyed past the tool. It is expressed in meters per minute (m/min). The 'process time' is dependant on the feed rate. The process time is the time during which the work piece is in contact with the tool.

=> The longer the process time, the greater the grinding effect.

Direction of feed

The work piece can be conveyed in the direction of rotation or vice versa. If the tool moves in the opposite direction to the work piece, the relative process time is longer and therefore the grinding effect on the material is greater. Therefore, if the line pattern is shorter a greater cutting depth is effected. If the tool moves with the direction of the work piece, the process time is shorter, hence a regular finish is created with a longer line pattern.

Applied pressure

The grinding effect can be influenced by applying different pressures:

• Longer process time
• Better cutting performance
• Faster machining

1. Higher pressure provides higher grinding effect.
2. Lower pressure provides lower grinding effect.
3. Too much pressure can cause smearing of the non-woven material products.

Cutting speed as a function of rotational speed (rpm) and diameter: