Chamfering Tools are used for Chamfering the flank edges of spur and helical cylindrical gears prevents edge distortion during heat treatment and protects the tooth profile against any nicks that may occur during handling.
The chamfering tool is like taper gear, with a width of roughly 10 – 15 mm, and normally is very well finished, with a surface like a mirror in order to prevent a quickly wear .The reasons for choosing a controlled, high-quality chamfering and deburring process are:
• To avoid breakage – Excessive carburizing along the tooth edges can often cause breakage when the gear is running
• To avoid damaging gears and bearings – If burrs are not removed, they may chip off during the running cycle and cause damage to the other gears and bearings.
• To avoid poor tool life in the following finishing processes (see next slide) – Hardened burrs will cause shorter tool life in the following finishing processes – The build-up of material along the profile due to chamfering must be straightened in a subsequent rolling cycle. If this is not done, such build-up can reduce the life-span of the finishing tools.
• Removal of very sharp burrs reduces the risk of tool handling injuries