Abstract
The simulation of the cutting layer in the CAD system during milling internal corners of elements with complex geometry has been presented. A case of variable cutting width in the finishing process was considered and the strategy of multitransitional corner milling was analyzed.
Highlights
In the milling process one of the fundamental problems is finishing of internal corners with a small rounding radius
The problem is mainly driven, among other things, by irregular cutting width for the last finishing pass. This is justified on economic grounds: material rough machining with milling cutter with larger diameter is much more effective than with milling cutter for finishing machining
If the mill with a large diameter is to be used for rough machining or in the case of the occurrence of acute angle between machined paths it may be that mill will work over the entire wrap angle range, this would result in its or workpiece damage. [1,2,3, 6]
Summary
In the milling process one of the fundamental problems is finishing of internal corners with a small rounding radius. The problem is mainly driven, among other things, by irregular cutting width for the last finishing pass This is justified on economic grounds: material rough machining with milling cutter with larger diameter is much more effective than with milling cutter for finishing machining. This increases cutting width, which in turn results in major change the wrap angle Changing the wrap angle directly affects cross-sectional area of the machined layer and contact area of the tool with the workpiece, and – significant increase of machining forces This can lead to vibrations, which contribute to significant deterioration in the accuracy of the produced elements during finishing milling. If the mill with a large diameter is to be used for rough machining or in the case of the occurrence of acute angle between machined paths it may be that mill will work over the entire wrap angle range, this would result in its or workpiece damage. (fig. 2) [1,2,3, 6]
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