A Practical Method of Modelling and Simulation for Ball End Mill CNC Grinding
Abstract
The spherical cutting edge on the ball end mill directly affects its cutting performance. This paper presents a practical method for end mill rake/clearance face modelling. The rake face is a developed ruled surface to fulfill the desired normal rake angle. Revolution surface of the bottom curve on the rake face avoids the interference between the wheel with the designed rake face while grinding. An equidistance curve of the cutting edge on the sphere is deduced by the geodesic curve in order to adjust the position of the cutting edge. With this new modelling method as a platform, it is very helpful for model modification and contour error compensation. The measurement results show that the average value of contour error on spherical cutting edge of the machined sample is 0.01mm inspected by the tool measuring instrument. Its validity is verified by good agreement between the results computed and the data measured.
- Publication:
-
Materials Science and Engineering Conference Series
- Pub Date:
- November 2019
- DOI:
- 10.1088/1757-899X/688/3/033035
- Bibcode:
- 2019MS&E..688c3035P