ISO programming
G240
G240
Use Cycle 240 CENTERING to machine center holes. You can specify the centering diameter or depth and an optional dwell time at the bottom. This dwell time is used for chip breaking at the bottom of the hole. If there is already a pilot hole then you can enter a deepened starting point.
Help graphic | Parameter |
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Q200 Set-up clearance? Distance between tool tip and workpiece surface. This value has an incremental effect. Input: 0...99999.9999 or PREDEF | |
Q343 Select diameter/depth (1/0) Select whether centering is based on the entered diameter or depth. If the control is to center based on the entered diameter, the point angle of the tool must be defined in the T-ANGLE column of the TOOL.T tool table. 0: Centering based on the entered depth 1: Centering based on the entered diameter Input: 0, 1 | |
Q201 Depth? Distance between workpiece surface and centering bottom (tip of centering taper). Only effective if Q343=0 is defined. This value has an incremental effect. Input: –99999.9999...+99999.9999 | |
Q344 Diameter of counterbore Centering diameter. Only effective if Q343=1 is defined. Input: –99999.9999...+99999.9999 | |
Q206 Feed rate for plunging? Traversing speed of the tool in mm/min while centering Input: 0...99999.999 or FAUTO, FU | |
Q211 Dwell time at the depth? Time in seconds that the tool remains at the hole bottom. Input: 0...3600.0000 or PREDEF | |
Q203 Workpiece surface coordinate? Coordinate on the workpiece surface referenced to the active datum. This value has an absolute effect. Input: –99999.9999...+99999.9999 | |
Q204 2nd set-up clearance? Distance in the tool axis between tool and workpiece (fixtures) at which no collision can occur. This value has an incremental effect. Input: 0...99999.9999 or PREDEF | |
Q342 Roughing diameter? 0: There is no hole >0: Diameter of the pre-drilled hole Input: 0...99999.9999 | |
Q253 Feed rate for pre-positioning? Traversing speed of the tool when approaching the deepened starting point. The speed is in mm/min. Only in effect if Q342 ROUGHING DIAMETER is not 0. Input: 0...99999.9999 or FMAX, FAUTO, PREDEF |
NC programs contained in this User's Manual are suggestions for solutions. The NC programs or individual NC blocks must be adapted before being used on a machine.
Some NC programs depend on the machine kinematics. Adapt these NC programs to your machine kinematics before the first test run.
In addition, test the NC programs using the simulation before the actual program run.
With a program test you determine whether the NC program can be used with the available software options, the active machine kinematics and the current machine configuration.
11 CYCL DEF 240 CENTERING ~ | ||
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12 L X+30 Y+20 R0 FMAX M3 M99 | ||
13 L X+80 Y+50 R0 FMAX M99 |