torinwalker
Aluminum
- Joined
- Nov 28, 2010
- Location
- Oakville, Ontario
Machine: Hardinge Conquest T42 with Fanuc 18-T (rev B) control
Operator: New to this machine
I tried the manufacturer's example for transferring a part from the sub-spindle to the main spindle as shown in the Hardinge Conquest T42 Programmer's Manual on page 16-19. In this example, they use the G10 P0 command to modify the workshift for both Z (turret) and Y (subspindle), as follows:
G10 P0 Z-1.75
G10 P0 Y-1.75
This shifts the zero of the turret and subspindle to the same offset, which is the zero of the part. Later in the example, the sub-spindle is commanded to G0 Y-0.5n to get a 0.5" grip on the part. Note: The G10 P0 modifies the workshift file, not the G53 through G59 offsets.
After trying this however, the Z workshift offset is modified, but the Y workshift offset is NOT.
And get this... I called Hardinge and spoke with Bob Allington who himself tried this out on one of their machines and got the same result! So it's not my machine, after all.
So, if the manual is wrong, what is the best way to transfer a part from the sub-spindle to the main spindle?
Put another way, how do YOU do it? What have you established as the best practice for this operation on a T42? Do you use G54, G55 for main/sub? Do you program in absolute values? Can you provide an example of gcode that you actually use in production? I can easily program the sub-spindle to transfer, but I am interested to know the best practices for this operation and seek your advice.
Operator: New to this machine
I tried the manufacturer's example for transferring a part from the sub-spindle to the main spindle as shown in the Hardinge Conquest T42 Programmer's Manual on page 16-19. In this example, they use the G10 P0 command to modify the workshift for both Z (turret) and Y (subspindle), as follows:
G10 P0 Z-1.75
G10 P0 Y-1.75
This shifts the zero of the turret and subspindle to the same offset, which is the zero of the part. Later in the example, the sub-spindle is commanded to G0 Y-0.5n to get a 0.5" grip on the part. Note: The G10 P0 modifies the workshift file, not the G53 through G59 offsets.
After trying this however, the Z workshift offset is modified, but the Y workshift offset is NOT.
And get this... I called Hardinge and spoke with Bob Allington who himself tried this out on one of their machines and got the same result! So it's not my machine, after all.
So, if the manual is wrong, what is the best way to transfer a part from the sub-spindle to the main spindle?
Put another way, how do YOU do it? What have you established as the best practice for this operation on a T42? Do you use G54, G55 for main/sub? Do you program in absolute values? Can you provide an example of gcode that you actually use in production? I can easily program the sub-spindle to transfer, but I am interested to know the best practices for this operation and seek your advice.