Metal removal rate

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The removal rate , Formula letter describes in the material- cutting method is in the form of chips worn in a certain time volume . In the manufacturing technology represents the removal rate is an important factor, since the basis of which the productivity of the tools and machines can be measured and classified. The aim of many developments in the field of machine tools and tools is to improve the metal removal rate by increasing the cutting speed or the feed rate .

Depending on the machining process, the formulas for calculating the metal removal rate differ slightly, but in general the feed rate and the cutting depth are decisive. If necessary, the cutting speed, the work engagement (width of the tool) and, when machining with multi-tooth tools, the number of cutting edges are also important. The metal removal rate is usually given in cm³ per minute. With face milling, the metal removal rate can also be calculated using the chip thickness and the number of teeth in mesh.

With rotating tools, the total number of cutting edges is used. (Q when milling). With static tools when turning, several (different) cutting edges can be engaged . B. with double offset roughing.

In the case of special tools with special shapes, the calculation is based on the chip cross-section or the rake face , which can be composed of composite surfaces or of various geometric shapes and does not have to describe a square or rectangle ( or ).

Metal removal rate during milling:



Metal removal rate for face milling:


Metal removal rate when turning:


Legend:

Individual evidence

  1. https://www.werkstatt-betrieb.de/themen/basics/laufen/rechner-grundlagen/artikel/zeitspanvol-und-verarbeitungzeit-875925.html