Applied Machining Technology by Heinz Tschätsch

By Heinz Tschätsch

Machining and slicing applied sciences are nonetheless an important for plenty of production procedures. This reference provides all very important machining approaches in a entire and coherent manner. It offers the training engineer with many technical info of the producing techniques and collects crucial facets equivalent to greatest accessible precision, error or reference values.

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

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Grooves for ends of threads. 3, is straight-lined and in parallel to the workpiece axis, then, in recessing, the whole width of the major cutting edge of the parting tool is engaged. The tool included angle is here 90°. 2 Cutting off Cutting off a finished workpiece from the rod is done using cutting off technology. 4). The tool-included angle of the parting tool is less than 90°. As a result, two different end diameters (d1, d2) are created. Consequently, in the final stage of cutting off, the part that is hanging on at the smaller pivot diameter breaks off without residual end.

1 summarises the most significant chip shapes. Each chip form is assigned to a chip volume ratio R, which defines by what factor the transport volume needed for the specific chip form exceeds the intrinsic material volume of the chip. 3 Chip volume ratios 41 The appraisal of the chip form involves both criteria (safety of the operator and transportability). According to this approach, ribbon-, entangled- and coil chips are not preferred. The desirable chip forms are short coil chips, spiral chips and pieces of spiral chips.

6 Copy turning The shape of the workpiece is taken from geometry storage (taper guide bar, template, and replica) and transmitted to the longitudinal- and cross slides. 10). 10 Taper turning attachment (taper guide bar) a fixing screw, b adjusting screw, c binder screw, d pedestal, e guide rod photo courtesy of Neue Magdeburger Werkzeugmaschinenfabrik, Sinsheim/Els. It is possible to swivel out the guide bar sidewise and to bring it into the desired taper angle. The cross slide is immediately connected with the taper guide bar, and is shifted radially during the longitudinal turning motion, according to the guide bar’s angle of inclination.

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