Because the milling cutter is rotating, the feed direction must be defined clockwise and counterclockwise.
Look along the feed direction of the tool, the tool is to the left of the workpiece, then the feed direction is called clockwise. Conversely, when the tool is on the right side of the workpiece, the feed direction is defined as counterclockwise.for the same tool, the same route, the milling method may be different if the 20 right end milling cutter processing a long width and height for 80605 shape and processing a long width and depth for 80605 groove, if the same feed direction, the direction of the tool filling, the [milling](https://www.cnclathing.com/cnc-milling) method is different.
When machining groove, the cutter in the right side of the workpiece, the feed direction is counterclockwise, the milling cutter rotation direction and the opposite direction of the feed, it is the reverse milling.
2.Milling cutter rotation direction.
CNC milling machine can be through instructions or buttons to achieve spindle forward rotation and
reverse, spindle forward rotation and reverse by milling cutter rotation restrictions, not spindle forward
rotation is milling, and vice versa.
As a general end mill, because most of the right, the spindle can only turn forward; Also like the left
and right screw thread knives, the spindle for the reverse and forward rotation.
Difference and selection of milling and reverse milling
The milling parts are compression, the reverse milling parts are tensile, compression smooth, easy to
Milling has a trend to let the knife, the reverse milling has a deep chewing trend, such as internal
corner had better be milling.
Processing of some soft materials, such as copper, it is best to use reverse milling, finish will be better than milling.
Due to the worktable feed screw thread clearance, milling cutter cutting force will make the workpiece
moving forward, but milling than milling can reduce tool wear, improve the surface finish, to ensure dimensional accuracy.
When the table is hydraulically driven, the workpiece blank surface is not hard, the process system to
have enough rigidity. Milling should be used as far as possible, especially for difficult materials milling, the use of milling can not only reduce cutting deformation, reduce cutting force and power consumption.
On the contrary, when the cutting surface has a hard layer, slag, the surface of the workpiece more
uneven, such as forging blank, should be used to reverse milling.