34169621 - heidenhain - DR. JOHANNES HEIDENHAIN GmbH

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Fundamentals 4 Fundamentals You can skip this chapter if you are already familiar with coordinate systems, incremental and absolute dimensions, nominal positions, actual positions and distance-to-go. Coordinate system The Cartesian1) coordinate system is used to describe the geometry of a workpiece. The Cartesian coordinate system consists of three mutually perpendicular axes X, Y and Z. The point of intersection of these axes is called the datum or origin of the coordinate system. Think of the axes as scales with divisions (usually in millimeters) which allow us to fix points in space referenced to the datum. To determine positions on a workpiece, the coordinate system is “laid” onto the workpiece. The machine axes are parallel to the axes of the coordinate system. The Z axis is normally the tool axis. 1) Named in honor of the French mathematician and philosopher René Descartes (1596 to 1650) Y –X +Y Z +Z –Z Graduation –Y X +X Datum or origin
Datum setting The workpiece drawing is used as the basis for machining the workpiece. To enable the dimensions in the drawing to be converted into traverse distances of machine axes X, Y and Z, each drawing dimension requires a datum or reference point on the workpiece (since a position can only be defined in relationship to another position). The workpiece drawing always indicates one absolute datum (the datum for absolute dimensions). However, it may contain additional relative datums. In the context of a numerical position display unit, datum setting means bringing the workpiece and the tool into a defined position in relation to each other and then setting the axis displays to the value that corresponds to that position. This establishes a fixed relationship between the actual positions of the axes and the displayed positions. You can set 2 absolute datum points and store them in nonvolatile memory. 1225 750 320 0 Absolute datum 0 300±0,1 150 0 -150 325 -250 -216,5 -125 0 125 216,5 250 0 450 700 900 950 216,5 125 0 -125 -216,5 250 Relative datum -250 Fundamentals 5
Page 1 and 2: User’s Manual Position Display Un
Page 3: This manual is for the ND display u
Page 7 and 8: Nominal position, actual position a
Page 9 and 10: Switch-On, Traversing the Reference
Page 11 and 12: SPEC FCT SPEC FCT or PROBING ENT PR
Page 13 and 14: Datum Setting with the KT Edge Find
Page 15 and 16: X PROBE X (appears only briefly) 5
Page 17 and 18: PROBE MIDP. X ENT If required, sele
Page 19 and 20: Moving the Axes with Distance-To-Go
Page 21 and 22: Bolt Hole Circles and Bolt Circle S
Page 23 and 24: HOLE DEPTH 5 START SPEC FCT ENT ENT
Page 25 and 26: SPEC FCT LIN. HOLE ENT 1ST HOLE X 2
Page 27 and 28: Working with Scaling Factors Scalin
Page 29 and 30: Part II Installation and Specificat
Page 31 and 32: Connections on Rear Panel ID label
Page 33 and 34: Connecting the Encoders Your displa
Page 35 and 36: List of Operating Parameters P1 Uni
Page 37 and 38: P80 Function of the CL key Set to z
Page 39 and 40: Parameter settings for HEIDENHAIN l
Page 41 and 42: Multipoint Axis Error Compensation
Page 43 and 44: Deleting a compensation value table
Page 45 and 46: RS-232-C/V.24 (Option) In addition
Page 47 and 48: Measured value output when probing
Page 49 and 50: Measured value output over the cont
Page 51 and 52: Example of measured value output ov
Page 53 and 54: Dimensions in mm/inches Tilting bas

34169621 - heidenhain - DR. JOHANNES HEIDENHAIN GmbH

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