Applied Machining Technology by Heinz Tschätsch

By Heinz Tschätsch

Machining and slicing applied sciences are nonetheless an important for lots of production strategies. This reference offers all vital machining approaches in a accomplished and coherent method. It presents the practicing engineer with many technical info of the producing procedures and collects crucial features equivalent to greatest available precision, blunders or reference values.

Many examples of concrete calculations, difficulties and their options illustrate the fabric and help the training reader. the net addresses given within the appendix supply with a quick hyperlink to additional information sources.

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Table 1 elucidates ks as a function of material and thickness of cut h. 1 Material to be removed The specific amount of cutting force amount depends on the material to be removed. In the case of steel, kc1,1 increases as a function of C content and alloying components. The coefficients kc1,1 and z are regarded as material constants. 2 Thickness of cut h Thickness of cut is the variable that has the most effect on ks. The greater h, the less ks. 19). kch  z kch kc1,1 (1 mm) z s kc1,1 hz chip thickness exponent (material constant) in N/mm2 spec.

Tool life travel path L includes the sum of drilling depths, or the sum of machined lengths in case of milling, which were cut with one tool in the period between sharpening operations. The rate of removal of the metal chips produced by the milling tool between sharpening operations is another way to assess the tool life characteristics of milling tools. 1 Cutting materials for which dulling is mainly caused by temperature In these tools, the cutting edge becomes unusable as a result of the temperature that occurs on the cut surface.

G. transfer lines) T = 240 min may be classified (with some limitations) as follows: T = 15 min vc15 T = 60 min vc60 T = 240 min vc240 The respective cutting speed values assigned are designated as vc15, vc60, vc240, thus, vc60 is the cutting speed, at which a tool life of 60 min can be achieved. 8). 6 Cost-optimal tool life The adjustment of optimal tool life values is possible as a result of the development of cutting tool tips that are held in specially designed clamping steel holders and thus are quick to exchange.

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