User's Manual TNC 360 (from 259 900-11) - heidenhain

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5 Programming Tool Movements 5.6 M-Functions for Contouring Behavior and Coordinate Data Machining open contours: M98 5-38 Standard behavior – without M98 The TNC calculates the intersections S of the radius-compensated tool paths and changes traverse direction at these points. If the corners are open on one side, however, machining is incomplete. Machining open corners with M98 With the miscellaneous function M98 the TNC temporarily suspends radius compensation to ensure that both corners are completely machined. Duration of effect The miscellaneous function M98 is effective only in the blocks in which it is programmed. Programming example . . . Fig. 5.45: Tool path without M98 Fig. 5.46: Tool path with M98 10 L X ... Y ... RL F .. ................................................ Move to contour point 10 11 L X .. IY–.. ... M98 ............................................... Move to contour point 11 12 L IX + .. ... ........................................................... Move to contour point 12 . . . 10 S S 11 12 TNC 360
5 Programming Tool Movements 5.6 M-Functions for Contouring Behavior and Coordinate Data Programming machine-reference coordinates: M91/M92 TNC 360 Standard behavior Coordinates are referenced to the workpiece datum (see page 1-7). Scale reference point The position feedback scales are provided with one or more reference marks. Reference marks are used to indicate the position of the scale reference point. If the scale has only one reference mark, its position is the scale reference point. If the scale has several – distance-coded – reference marks, then the scale reference point is indicated by the leftmost reference mark (at the beginning of the measuring range). Machine zero — miscellaneous function M91 The machine zero point is required for the following tasks: • Defining the limits of traverse (software limit switches) • Moving to machine-reference positions (e.g. tool-change position) • Setting the workpiece datum Machine zero is identical with the scale reference point. If you want the coordinates in a positioning block to be reference to the machine zero point, end the block with the miscellaneous function M91. Coordinates that are referenced to the machine zero point are indicated in the display with REF. Additional machine datum M92 In addition to the machine zero point, the machine tool builder can define another machine-reference position, the machine datum. The machine tool builder defines the distance for each axis from the machine zero to the machine datum. If you want the coordinates in a positioning block to be referenced to the machine datum, end the block with the miscellaneous function M92. Workpiece datum The user enters the coordinates of the datum for workpiece machining in the MANUAL OPERATION mode (see page 2-7). Y M Z Y M Fig. 5.44: Machine datum and workpiece datum Z X X M 5-39
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May 1994 HEIDENHAIN User's Manual H
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TNC Guideline: From workpiece drawi
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How to use this manual TNC 360 This
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Contents User's Manual TNC 360 (fro
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2 Manual Operation and Setup TNC 36
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4 Programming TNC 360 4.1 Editing p
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6 Subprograms and Program Section R
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8 Cycles TNC 360 8.1 General Overvi
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10 External Data Transfer TNC 360 1
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12 Tables, Overviews, Diagrams TNC
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1 Introduction 1.1 The TNC 360 The
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1 Introduction 1.1 The TNC 360 TNC
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1 Introduction 1.2 Fundamentals of
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1 Introduction Programming tool mov
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1 Introduction 1.4 Graphics and Sta
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1 Introduction 1.4 Graphics and Sta
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1 Introduction 1.5 Programs The TNC
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1 Introduction 1.5 Programs To remo
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2 Manual Operation and Setup Traves
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2 Manual Operation and Setup 2.2 Sp
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2 Manual Operation and Setup 2.3 Se
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2 Manual Operation and Setup 2.4 3D
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2 Manual Operation and Setup 2.6 Me
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2 Manual Operation and Setup 2.6 Me
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3 Test Run and Program Run 3.1 Test
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3 Test Run and Program Run 3.2 Prog
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3 Test Run and Program Run 3.3 Bloc
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4 Programming 4-2 In the PROGRAMMIN
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4 Programming 4.1 Editing Part Prog
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Page 169 and 170: 8 Cycles 8.3 SL Cycles 8-16 Subcont
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8 Cycles 8.3 SL Cycles SL Cycles: O
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8 Cycles 8.3 SL Cycles 8-22 Area of
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8 Cycles 8.3 SL Cycles 8-24 Area of
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8 Cycles 8.3 SL Cycles PILOT DRILLI
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8 Cycles 8.3 SL Cycles 8-28 The fol
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8 Cycles 8.4 Cycles for Coordinate
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8 Cycles 8.5 Other Cycles DWELL TIM
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9 Digitizing 3D Surfaces 9-2 The di
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9 Digitizing 3D Surfaces 9.2 Digiti
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9 Digitizing 3D Surfaces 9.3 Line-B
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9 Digitizing 3D Surfaces 9.4 Contou
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9 Digitizing 3D Surfaces 9.4 Contou
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9 Digitizing 3D Surfaces 9.5 Using
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10 External Data Transfer 10.2 Pin
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11 MOD Functions 11-2 The MOD funct
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11 MOD Functions 11.5 Machine-Speci
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11 MOD Functions 11.10 Setting the
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12 Tables, Overviews, Diagrams 12.1
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Miscellaneous Functions (M Function
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