Stock Removal (Cycle952) - Siemens SINUMERIK 828D Operating Manual

Computerized numerical controller for machine tools

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Programming technology functions (cycles)

9.3 Contour turning

Stock removal (CYCLE952)

For stock removal, the cycle takes into account a blank that can comprise a cylinder, an

allowance on the finished-part contour or any blank contour. You must define a blank

contour as a separate closed contour in advance of the finished-part contour.

Precondition

For a G code program, at least one CYCLE62 is required before CYCLE952.

If CYCLE62 is only present once, then this involves the finished part contour.

If CYCLE62 is present twice, then the first call is the blank contour and the second call is the

finished-part contour (also see Chapter "Programming (Page 390)").

Execution from external media

If you execute programs from an external drive (e.g. local drive or network drive), then you

require the execution from external storage function (EES).

For additional information, please refer to the following documentation:

Commissioning Manual SINUMERIK Operate (IM9) / SINUMERIK 840D sl

Using the execution from external storage function (EES) you have the

option of accessing any logical drive with part programs and

directly executing these the same as via the NC program memory

Rounding the contour

In order to avoid residual corners during roughing, you can enable the "Always round the

contour" function. This will remove the protrusions that are always left at the end with each

cut (due to the cut geometry). The "Round to the previous intersection" setting accelerates

machining of the contour. However, any resulting residual corners will not be recognized or

machined. Thus, it is imperative that you check the behavior before machining using the

When set to "automatic", rounding is always performed if the angle between the cutting edge

and the contour exceeds a certain value. The angle is set in a machine data element.

Machine manufacturer

Please refer to the machine manufacturer's specifications.

Operating Manual, 01/2015, 6FC5398-8CP40-5BA2

Sinumerik 840d sl