Lathe Conical surface has accurate matching and positioning, small matching clearance and convenient disassembly, and is widely used in mechanical equipment and tools. Such as the cooperation between the taper hole of the main shaft and tailstock of the lathe and the top and the shank of the drill, the cooperation of the positioning taper hole of the gear and the shaft, the taper pipe thread of the lathe, and the sealing cooperation of the water valve and the air valve, etc.
Basic knowledge of cones
1. Features of lathe taper fit
I) The conical surface has high coaxiality precision and good general performance.
2) The positioning is stable and reliable, with excellent interchangeability, and the original positioning accuracy is still maintained during repeated installations.
3) It has the performance of no clearance fit, and plays a sealing effect on fluid substances such as water and gas.
4) When the cone angle is less than 3. It has a stable self-locking effect and can transmit a large torque.
5) Easy to disassemble and easy to maintain.
2. Formation of the conical surface of the lathe
When the right-angled triangle ABC revolves around the right-angled side AC, the geometry contained by the inter-home trajectory formed by the hypotenuse AB is a cone, the surface formed by AB is a conical surface, A is the generatrix of the conical surface, and AC is the cone axis. If the lathe cuts off the top part of the cone, it is called a truncated cone, which is our common form.
The cone is resistant to the outer conical surface and the inner conical surface, which are called cone and conical hole respectively.