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Chapter 6 Memorizing Pitch Error Compensation
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Connection
CHAPTER 6 MEMORIZING PITCH ERROR COMPENSATION
6.1 Function Description
There are more or less precision errors in the pitch of machine axes lead screw, and it will
definitely affect the parts machining precision. This GSK980TDi CNC system has the memorizing
pitch error offset function that it can accurately compensate the pitch error of the lead screw.
6.2 Specification
1) The set offset amount is concerned with the offset origin, offset intervals etc.;
2) Pitch error offset value is get by searching the table about machine coordinates and pitch
error compensation origin;
3) Points to be compensated: 1200 points for 5 axes, each axis confirms point range by
parameter setting;
4) Axis compensated: X, Y, Z ,4th,5th axis
5) Compensation range: -2550
～
2550×least input increment;
6) Compensation interval: 10000
～
9999999××least input increment;
7) Compensation amount of compensation point N(N=0,1,2,3,…1023) is determined by the
mechanical error between point N and point N-1;
8) The setting is the same as the CNC parameters input, see
Operation.
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6.3 Parameter Setting
6.3.1 Pitch Compensation
Bit parameter
0 0 3
PCOMP
Bit5=1: Pitch error offset active;
Bit5=0: Pitch error offset inactive;
6.3.2 Pitch Error Compensation Number
Set the maximum pitch error compensation number and the minimum pitch error compensation
number of each axis through parameters No.096 and No.097 so that the compensation range can be
determined. In an offset value list, the number that corresponds to machine zero point is called pitch
error compensation origin (reference point). The pitch error compensation origin is set by parameter
No. 098. It can be any value within the compensation range according to mechanical requirement.
Data parameter
0 9 6
PECMINn
The maximum pitch error compensation number
0 9 7
PECMAXn
