[torinwalker]

I tried the example for transferring a part from the sub-spindle to the main spindle as shown in the Hardinge Conquest T42 Programmer's on page 16-19. In this example, it uses 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

After trying this, 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? 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?

[hiiesalu]

I tried the example for transferring a part from the sub-spindle to the main spindle as shown in the Hardinge Conquest T42 Programmer's on page 16-19. In this example, it uses 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

After trying this, 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? 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?

You should have this as a sub program here it is for a ball screw T42 sub spindle full program below go slow to test it and have a special cut off (if bar work that will fit between both spindles)

O9170 (SUB SPINDLE TRANSFER)
IF[#19EQ#0]GOTO10
IF[#19EQ1]GOTO5
M85
GOTO1
N5IF[#2EQ#0]GOTO10
IF[#24EQ#0]GOTO10
IF[#9EQ#0]GOTO10
N1M32
IF[#19EQ3]GOTO2
M56
M46
G4U.5
GOTO3
N2M21
G4U.5
N3M84
IF[#19EQ3]GOTO4
M57
M47
IF[#19EQ1]GOTO6
G4U.5
M21
G4U.5
GOTO7
N4M22
G4U.5
M56
G4U.5
GOTO7
N6G1G99X#24F#9
G4U.2
N7M85
IF[#19EQ1]GOTO8
IF[#19EQ2]GOTO10
M35
GOTO10
N8G00X[#2+[#2*.16]]
N10M99
%

[MirNar]

https://youtu.be/AMqEtERgcPA

[g-codeguy]

I realize this is an old post, but maybe it would save someone else time. I am a fan of subroutines where feasible. However, I don't use one for transferring parts on our Hardinges with Y-axis sub. The above listed O9170 (SUB SPINDLE TRANSFER) is not for a Y-axis, but for one where subspindle travel is set by a movable switch located under the subspindle. Notice the M84 & M85. No Y-axis move.

The correct example is in the Hardinge manual. For anyone without a manual, but a Hardinge with Y-axis needing an example, let me know.