Here is a good explanation of the differences, advantages and disadvantages of conventional and climb milling.
http://www.harveytool.com/secure/Content/Documents/Tech_ConventionalMillingVsClimbMilling.pdf
Short and informative, thanks.
Here is a good explanation of the differences, advantages and disadvantages of conventional and climb milling.
http://www.harveytool.com/secure/Content/Documents/Tech_ConventionalMillingVsClimbMilling.pdf
One important tip I picked up was which side of the chip cutting begins, along with the heat generated or not generated in different materials and the benefits.The one thing it doesn't mention is why backlash is a huge problem for climb milling. When moving towards the workpiece you're are one limit of the backlash. If you're conventional milling, when the workpiece touches the cutter, the cutter pushes the machine back into the drivescrew and all that happens is that the resistance to advancing the cutter increases. If you're conventional milling, when the workpiece touches the cutter, the cutter pulls the machine forward against the drivescrew and it suddenly jumps forward by the amount of the backlash.
Climb milling isn't a problem if the mill is tight and only has a thou or two of backlash, or (in the CNC case) if you're using gentle entry techniques when approaching the workpiece (e.g. rolling into the piece from the side.). As long as you don't have that initial cutter-snapping jerk, there's no real difference in how the machine behaves.
The one thing it doesn't mention is why backlash is a huge problem for climb milling. When moving towards the workpiece you're are one limit of the backlash. If you're conventional milling, when the workpiece touches the cutter, the cutter pushes the machine back into the drivescrew and all that happens is that the resistance to advancing the cutter increases. If you're conventional milling, when the workpiece touches the cutter, the cutter pulls the machine forward against the drivescrew and it suddenly jumps forward by the amount of the backlash.
Climb milling isn't a problem if the mill is tight and only has a thou or two of backlash, or (in the CNC case) if you're using gentle entry techniques when approaching the workpiece (e.g. rolling into the piece from the side.). As long as you don't have that initial cutter-snapping jerk, there's no real difference in how the machine behaves.
... People who insist on climb milling are just showing their lack of understanding and a degree of laziness, some in fact many don't really know what it is until it's too late.