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

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5 Programming Tool Movements 5.2 Contour Approach and Departure 5-4 An especially convenient way to approach and depart a workpiece is on a tangential arc. This is done with the “corner rounding” function (RND) (see page 5-25). Starting and end positions Starting position The tool moves from the starting position to the first contour point. The starting position is programmed without radius compensation. The starting position must be: • approachable without collision • near the first contour point • located to prevent contour damage during workpiece approach If you choose a starting position within the hatch marked area of Figure 5.3 the tool will damage the contour as it approaches the first contour point. The best starting position S lies on the extension of the tool path for machining the first contour element. First contour point Workpiece machining starts at the first contour point. The tool moves on a radius-compensated path to this point. Approaching the starting point in the spindle axis. The spindle moves to its working depth as it approaches the starting position S . If there is any danger of collision, move the spindle axis separately to the starting position. Example: L X ... Y ... Positioning in X/Y L Z–10 Positioning in Z S Fig. 5.3: Starting position S for contour approach RL RL S A R0 A Fig. 5.4: First contour point A for machining Fig. 5.5: Move the spindle axis separately if there is any danger of collision TNC 360
5 Programming Tool Movements 5.2 Contour Approach and Departure TNC 360 End position The end position, like the starting point, must be • approachable without collision • near the last contour point • located to prevent contour damage during workpiece departure The best end position E lies on the extension of the tool path. The end position can be located anywhere outside of the hatch marked area in Fig. 5.6. It is approached without radius compensation. Departing the end position in the spindle axis The spindle axis is moved separately when the end position is departed. Example: L X ... Y ... R0 approaching the end position L Z+50 retracting the tool Common starting and end position A common starting and end position SE can be located outside of the hatch marked area in the figures. The best common starting and end position lies exactly between the extensions of the tool paths for machining the first and last contour elements. A common starting and end position is approached without radius compensation. Fig. 5.6: End position E after machining E Fig. 5.7: Retract separately in the spindle axis SE S R0 A R0 Fig. 5.8: Common starting and end position A 5-5
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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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7 Programming with Q Parameters 7.2
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8 Cycles 8.1 General Overview of Cy
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8 Cycles 8.1 General Overview Dimen
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8 Cycles 8.2 Simple Fixed Cycles 8-
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8 Cycles 8.2 Simple Fixed Cycles 8-
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8 Cycles 8.2 Simple Fixed Cycles SL
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8 Cycles 8.2 Simple Fixed Cycles PO
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8 Cycles 8.2 Simple Fixed Cycles CI
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8 Cycles 8.3 SL Cycles 8-16 Subcont
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8 Cycles 8.3 SL Cycles ROUGH-OUT (C
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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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User's Manual TNC 360 (from 259 900-11) - heidenhain

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