V1: Feedrates; Brief Description - Siemens SINUMERIK 828D Function Manual

V1: Feedrates

17.1

Brief Description

Types of feedrate
The feedrate determines the machining speed (axis or path velocity) and is observed in every type of
interpolation, even where allowance is made for tool offsets on the contour or on the tool center point path
(depending on G commands).
The following types of feedrate allow optimum adaptation to the various technological applications (turning,
milling, drilling, etc.):
• Rapid traverse feedrate (G0)
• Inverse-time feedrate (G93)
• Linear feedrate (G94)
• Revolutional feedrate (G95)
• Constant cutting rate (G96, G961)
• Constant speed (G97, G971)
• Feed rate for thread cutting (G33, G34, G35)
• Feedrate for tapping with compensating chuck (G63)
• Feedrate for tapping without compensating chuck (G331, G332)
• Feedrate for chamfer/rounding FRC, FRCM
• Non-modal feedrate FB
Programmable run-in, run-out path for G33
The thread run-in and run-out path can be programmed. The thread axis is accelerated or braked inside the
specified path.
Note
The axis can be overloaded if the specified path is too short.
Axis assignment of the feedrates
Feedrates can be assigned to the axes variably to adjust to the different technological requirements.
The following versions are possible:
• Separate feedrates for the working plane and the infeed axis
• Variable axis assignment for path feedrate
• Feedrate for positioning axes
Basic Functions
Function Manual 09/2011, 6FC5397-0BP40-2BA0
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