Appendix 1.15 Machine Error Compensation Function Outline; Appendix 1.15.1 Outline - Mitsubishi Electric C70 Setup Manual

MITSUBISHI CNC
Appendix 1 Explanation of Parameters

Appendix 1.15 Machine Error Compensation Function Outline

Appendix 1.15.1 Outline

(1) Memorized pitch error compensation
According to the specified parameters‚ this method compensates an axis feed error caused by a ball
screw pitch error‚ etc.
With the reference point defined as the base‚ as shown in Fig 1.1, set the compensation amount in the
division points obtained by equally dividing the machine coordinates.
The compensation amount can be set by either the absolute or incremental system. Select the desired
method with the "#4000 Pinc".
Machine position is compensated between division points n and n+1 as much as compensation amount
between them by linear approximation.
Real machine
position
Compensation
amount
Fig. 1.1 Relationship between the compensation amount and machine position
406
Ideal machine
position
▲
Reference position Compensation
amount
between
division points
▲
ｎ
Real machine position for
which no compensation
has been made
Command machine
▲
▲
position
▲
: Division point
Command machine position
▲ ▲
ｎ＋1 ｎ＋2