S1: Spindles; Brief Description - Siemens SINUMERIK 840D Function Manual

S1: Spindles

18.1

Brief Description

The primary function of a spindle is to set a tool or workpiece in rotary motion in order to facilitate
machining.
Depending on the type of machine, the spindle must support the following functions in order to
achieve this:
● Input of a direction of rotation for the spindle (M3, M4)
● Input of a spindle speed (S, SVC)
● Spindle stop, without orientation (M5)
● Spindle stop with orientation / Spindle positioning
(SPOS, M19 and SPOSA)
● Gear change (M40 to M45)
● Spindleaxis functionality (spindle becomes rotary axis and vice versa)
● Thread cutting (G33, G34, G35)
● Tapping without compensating chuck (G331, G332)
● Tapping with compensating chuck (G63)
● Revolutional feedrate (G95)
● Constant cutting rate (G96, G961, G97, G971)
● Programmable spindle speed limits (G25, G26, LIMS=)
● Position encoder assembly on the spindle or on the spindle motor
● Spindle monitoring for min. and max. speed as well as
max. encoder limit frequency and end point monitoring of spindle
● Switching the position control (SPCON, SPCOF, M70) on/off
● Programming of spindle functions:
– From the part program
– Via synchronized actions
– Via PLC with FC18 or via special spindle interfaces for simple spindle activation
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
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