Frame Calculation From Three Measuring Points In Space (Meaframe) - Siemens SINUMERIK 840D sl Programming Manual

Work preparation
3.8 Coordinate transformations (frames)
<value_x>:
Further information
PRESETONS in NC programs
A detailed description of PRESETONS in NC programs is provided in the Function Manual
Basic Functions.
PRESETONS in synchronized actions
A detailed description of PRESETONS in synchronized actions is provided in Function Manual
Synchronized Actions.
3.8.7

Frame calculation from three measuring points in space (MEAFRAME)

The MEAFRAME function is used to support measuring cycles. It calculates the frame from
three ideal points and the corresponding measured points.
When a workpiece is positioned for machining, its position relative to the Cartesian machine
coordinate system is generally both offset and rotated in relation to its ideal position. For exact
machining or measuring either a costly physical adjustment of the part is required or the
motions defined in the part program must be changed.
A frame can be defined by sampling three points in space whose ideal positions are known. A
touch-trigger probe or optical sensor is used for sampling that touches special holes precisely
fixed on the supporting plate or probe balls.
Syntax
MEAFRAME(<ideal points>,<measuring points>,<quality>)
Meaning
MEAFRAME:
<ideal points>:
<measuring points>:
644
New current actual value of the machine axis in the machine coordinate system
(MCS)
The input is made in the active measuring system (inch/metric)
An active diameter programming (DIAMON) is taken into account
Type: REAL
Function call
2-dim. REAL array containing the three coordinates of the ideal points
2-dim. REAL array containing the three coordinates of the measured points
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming