CBN machining of lift traction wheels 丨 machining accuracy, machining life significantly improved

The traction system is the core component of the lift, and the traction sheave is the rope sheave on the traction machine, also known as the traction rope sheave or the driving rope sheave, which is the device for transmitting the traction power of the lift, using the friction between the traction wire rope and the rope groove on the rim of the traction sheave to transmit the power, and is mounted on the worm-gear shaft of the traction machine.

Due to the traction wheel to withstand the car, load, counterweight and other devices of all dynamic and static load, so the requirements of the traction wheel strength, toughness, wear resistance, impact resistance, so in the material more ductile cast iron.

Lift traction sheave wear in addition to increased safety hazards also affects the operating speed, lift traction, as well as increased noise. In order to reduce the traction rope in the traction sheave damage, in addition to selecting a reasonable traction sheave groove shape, the roughness of the working surface of the rope groove, hardness has certain requirements, at the same time, there is a rope groove and the spindle connecting holes in the coaxial degree and the end face and the hole of the perpendicularity of the requirements.

The traction sheave is a rotating body part, and the machining is mainly based on turning. The use of CBN tools, can be installed at a time while machining one side of the end face, outer circle, rope winding groove and bore, because CBN tool machining can achieve higher precision and lower surface roughness of the workpiece, and longer life, can greatly reduce the time of tool change, and effectively guarantee the accuracy required by the part drawing.