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

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8 Cycles 8.3 SL Cycles TNC 360 The machining data are defined in the following cycles: • PILOT DRILLING (cycle 15) • ROUGH-OUT (cycle 6) • CONTOUR MILLING (cycle 16) Each subprogram defines whether RL or RR radius compensation applies. The sequence of points determines the direction of rotation in which the contour is to be machined. The control deduces from these data whether the specific subprogram describes a pocket or an island: • For a pocket the tool path is inside the contour • For an island the tool path is outside the contour • The way the SL contour is machined is determined by MP7420. • We recommend a graphical test run before you machine the part. This will show if all contours were correctly defined. • All coordinate transformations are allowed in the subprograms for the subcontours. • F and M words are ignored in the subprograms for the subcontours. The following examples will at first use only the ROUGH-OUT cycle. Later, as the examples become more complex, the full range of possibilities of this group of cycles will be illustrated. CONTOUR GEOMETRY (Cycle 14) Application Cycle 14 CONTOUR GEOMETRY contains the list of subcontours that make up the complete contour Input data Enter the LABEL numbers of the subprograms. A maximum of 12 subprograms can be listed. Effect Cycle 14 becomes effective as soon as it is defined. C D A B Fig. 8.13: Example of an SL contour: A, B = pockets; C, D = islands 8-17
8 Cycles 8.3 SL Cycles ROUGH-OUT (Cycle 6) 8-18 Process Cycle 6 specifies the cutting path and partitioning. • The tool is positioned in the tool axis above the first infeed point, taking the finishing allowance into account. • Then the tool penetrates into the workpiece at the programmed feed rate for pecking. Milling the contour: • The tool mills the first subcontour at the specified feed rate, taking the finishing allowance into account. • When the tool returns to the infeed point, it is advanced to the next pecking depth. This process is repeated until the programmed milling depth is reached. • Further contours are milled in the same manner. Roughing out pockets: • After milling the contour the pocket is roughed out. The stepover is defined by the tool radius. Islands are jumped over. • If necessary, pockets can be cleared out with several downfeeds. • At the end of the cycle the tool returns to the setup clearance. Required tool This cycle requires a center cut end mill (ISO 1641) if the pocket is not separately pilot drilled or if the tool must repeatedly jump over contours. Input data • SETUP CLEARANCE A • MILLING DEPTH B • PECKING DEPTH C • FEED RATE FOR PECKING: Traversing speed of the tool during penetration • FINISHING ALLOWANCE D : Allowance in the machining plane (positive number) • ROUGH-OUT ANGLE α : Feed direction for roughing out. The rough-out angle is relative to the angle reference axis and can be set such that the resulting cuts are as long as possible with few cutting movements. • FEED RATE: Traversing speed of the tool in the machining plane. Machine parameters determine whether • the contour is first milled and then surface machined, or vice-versa • the contour is milled conventionally or by climb milling • all pockets are first roughed out to the full milling depths and then contour milled, or vice-versa • contour milling and roughing out are performed together for each pecking depth. D Fig. 8.14: Infeeds and distances with the ROUGH-OUT cycle α Fig. 8.15: Tool path for rough-out C D A B TNC 360
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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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4 Programming 4.2 Tools 4-6 Determi
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4 Programming 4.2 Tools Entering to
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4 Programming 4.2 Tools Tool change
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4 Programming 4.3 Tool Compensation
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4 Programming 4.3 Tool Compensation
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4 Programming 4.5 Entering Tool-Rel
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4 Programming 4.6 Entering Miscella
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4 Programming 4-20 Generating a new
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5 Programming Tool Movements 5.1 Ge
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5 Programming Tool Movements 5.2 Co
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Page 183 and 184: 8 Cycles 8.4 Cycles for Coordinate
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Page 193 and 194: 9 Digitizing 3D Surfaces 9-2 The di
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12 Tables, Overviews, Diagrams 12.2
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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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