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Examples of turning cycles, 4 tu rn ing cy cles – HEIDENHAIN SW 68894x-02 User Manual

Page 194

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194

Teach-in mode

4.4

Tu

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ing

cy

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Examples of turning cycles

Roughing and finishing an outside contour

The shaded area from AP (starting point of contour) to EP (contour end

point) is rough-machined with the cycle Plunge longitudinal—
expanded,

taking oversizes into account. This contour area is to be

finished subsequently with the cycle Finishing cut longitudinal—
expanded.

The rounding arc and the oblique cut at the contour end are also

machined in "expanded mode."
The parameters for contour starting point X1, Z1 and contour end
point X2, Z2

determine the cutting and infeed directions—in this

example, external machining and infeed in negative X-axis direction.
Tool data

Turning tool (for external machining)

WO = 1 (tool orientation)

A = 93° (tool angle)

B = 55° (point angle)