Common methods for workpiece orgin setting of Fanuc system NC lathe

Tool presetting by test cutting directly

1. First use billmpse tool to turn a excircle for test, and remember the current X coordinate. After excircle diameter is measured, use X coordinate subtrac excircle diameter, then input the result into X on "offset" interface.

2. Use billmpse tool to turn a excircle face for test, and remember the current Z coordinate.Then input it into X on "offset" interface

Use G50 to set work orgin

1. First use billmpse tool to turn a excircle for test. After excircle diameter is measured, back off the tool along postive direction of Z axis, then cut face to centre.

2. Select MDI mode.Input G50 X0 Z0, then press START, and set current point to orgin.

3. Select MDI mode.Input G0 X150 Z150 . Make tool start machining.

4. Begining of the program：G50 X150 Z150 ……

5. Note：When use G50 X150 Z150, your start point and end point must be X150 Z150.

6. You can also use G30 to avoid tool confusion.Here, the begining of program: G30 U0 W0 G50 X150Z150

7. In FANUC system, the position of 2nd reference point is setted in parameter. And in SSCNC software, when you press mouse right key dialog box displays,and press left key for confirm.

Use work movment to set work orgin

1. In Offset of FANUC0-TD system there is a work moving interface where you can input orgin offset value.

2. Use billmpse tool to turn a excircle face for test.Here,the position of Z coordinate：Z200.

3. Select "Ref".Press X、Z axis return to reference point.Now, workpiece orgin coordinate system is setted.

4. Note：This orgin is holding, untill offset value Z0 is resetted.

Use G54-G59 to set work orgin

1. Use billmpse tool to turn a excircle for test. After excircle diameter is measured, back off the tool along postive direction of Z axis, then cut face to centre.

2. Input current X and Z coordinate value into G54----G59.Call program:G54X50Z50…….

3. Note:You can use G53 to clear G54-----G59 workpiece coordinate system.