User's Manual ISO TNC 360 (260020xx, 280490xx) - heidenhain

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8 Cycles 8.3 SL Cycles ROUGH-OUT G57 TNC 360 Process Cycle G57 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 subcontours 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 working 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 working 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 C Fig. 8.14: Infeeds and distances with the ROUGH-OUT cycle α Fig. 8.15: Tool path for rough-out D A B 8-17
8 Cycles 8.3 SL Cycles 8-18 Example: Roughing out a rectangular island Rectangular island with rounded corners Tool: center-cut end mill (ISO 1641), radius 5 mm. Coordinates of the island corners: X Y 1 70 mm 60 mm 2 15 mm 60 mm 3 15 mm 20 mm 4 70 mm 20 mm Coordinates of the auxiliary pocket: X Y 6 –5 mm –5 mm 7 105 mm –5 mm 8 105 mm 105 mm 9 –5 mm 105 mm Starting point for machining: 5 X = 40 mm Y = 60 mm Setup clearance: 2 mm Milling depth: 15 mm Pecking depth: 8 mm Feed rate for pecking: 100 mm/min Finishing allowance: 0 Rough-out angle: 00 Feed rate for milling: 500 mm/min Cycle in a part program Y 60 20 15 70 %S818I G71 * ............................................................ Begin program N10 G30 G17 X+0 Y+0 Z–20 * ................................... Define workpiece blank N20 G31 X+100 Y+100 Z+0 * N30 G99 T1 L+0 R+3 * .............................................. Tool definition N40 T1 G17 S2500 * .................................................. Tool call N50 G37 P01 2 P02 1 * .............................................. Define in cycle CONTOUR GEOMETRY that the contour elements are described in subprograms 1 and 2 N60 G57 P01 –2 P02 –15 P03 –8 P04 100 P05 +0 P06 +0 P07 500 * ....................................................... Cycle definition ROUGH-OUT N70 G00 G40 G90 Z+100 M06 * ............................... Retract the spindle, insert the tool N80 X+40 Y+50 M03 * .............................................. Pre-positioning in X and Y, spindle ON N90 Z+2 M99 * .......................................................... Pre-positioning in Z to setup clearance, cycle call N100 Z+100 M02 * N110 G98 L1 * Subprogram 1: N120 G01 G42 X+40 Y+60 * Geometry of the island N130 X+15 * (From radius compensation G42 and counterclockwise machining, the control concludes that the contour element is N150 Y+20 * an island) N160 G25 R12 * N170 X+70 * N180 G25 R12 * N190 Y+60 * N200 G25 R12 * N210 X+40 * N220 G98 L0 * N230 G98 L2 * Subprogram 2: N240 G01 G41 X-5 Y-5 * Geometry of the auxiliary pocket: N250 X+105 * External limitation of the machining surface N260 Y+105 * (From radius compensation G41 and counterclockwise N270 X–5 * machining, the control concludes that the contour element is N280 Y–5 * a pocket) N290 G98 L0 * N9999 %S818I G71 * 2 5 3 4 9 R12 1 G98 L1 X 6 G98 L2 8 7 TNC 360
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February 1994 HEIDENHAIN User's Man
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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 ISO
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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 MOD Functions TNC 360 10.1 Selec
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1 Introduction 1.1 The TNC 360 1-2
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1 Introduction 1.1 The TNC 360 1-4
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1 Introduction 1.2 Fundamentals of
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1 Introduction 1.3 Switch-On 1-14 S
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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 Selecti
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2 Manual Operation and Setup 2.1 Mo
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2 Manual Operation and Setup 2.1 Mo
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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 2.4 3D
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2 Manual Operation and Setup 2.6 Me
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3 Test Run and Program Run 3.2 Prog
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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 4.1 Editing Part Prog
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4 Programming 4.2 Tools TNC 360 Eac
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4 Programming 4.2 Tools Entering to
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4 Programming 4.2 Tools Calling too
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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 4.4 Program Creation
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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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5 Programming Tool Movements 5.1 Ge
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5 Programming Tool Movements 5.2 Co
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Page 169: 8 Cycles 8.3 SL Cycles CONTOUR GEOM
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Page 177 and 178: 8 Cycles 8.3 SL Cycles 8-24 Example
Page 179 and 180: 8 Cycles 8.3 SL Cycles CONTOUR MILL
Page 181 and 182: 8 Cycles 8.3 SL Cycles 8-28 Example
Page 183 and 184: 8 Cycles 8.4 Cycles for Coordinate
Page 191 and 192: 8 Cycles 8.5 Other Cycles DWELL TIM
Page 193 and 194: 9 External Data Transfer 9-2 The TN
Page 195 and 196: 9 External Data Transfer 9.3 Prepar
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11 Tables, Overviews, Diagrams 11-2
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User's Manual ISO TNC 360 (260020xx, 280490xx) - heidenhain

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