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Transform C-axis Contour Toolpaths

Orvie

By Orvie,
in Post Processor Development Forum

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Orvie Newbie

Orvie

Posted
Posted

Below is an example of proper code for transforming a C-axis Contour toolpath. (no Y-axis).

The text in blue is what I had to add.

 

I have tried this with MPLFAN, & MPLMASTER, and i get the same results.

The posts I have tested are for Fanuc and Okuma Controls.

When I try to do this same thing using Y-axis, the output is perfect.

 

(*****************************)

N1(INTERPOLATE HOLES)

M67

G28 U0. W0. H0.

T0303(.75 SOLID CARBIDE EMILL W/.032 RAD.)

M93 (CHIP CONVEYOR ON)

G54 G98 M68

G0 C0.

G0 Z2.

X7.

G97 S2500 M24

G12.1

G1 X7. C0. F500.

Z.25

Z0. F100.

X7.375 F40.

X7.75

G3 X6.25 Z-.05 R.375

X7.75 Z-.1 R.375

X6.25 Z-.15 R.375

X7.75 Z-.2 R.375

X6.25 Z-.25 R.375

X7.75 Z-.3 R.375

X6.25 Z-.35 R.375

X7.75 Z-.4 R.375

X6.25 Z-.45 R.375

X7.75 Z-.5 R.375

X6.25 Z-.55 R.375

X7.75 Z-.6 R.375

X6.25 Z-.65 R.375

X7.75 Z-.7 R.375

X6.25 Z-.75 R.375

X7.75 Z-.8 R.375

X6.25 Z-.85 R.375

X7.75 Z-.9 R.375

X6.25 Z-.95 R.375

X7.75 Z-1. R.375

X6.25 R.375 F4.

X7.75 R.375

G1 X7.

Z.25 F500.

Z2. F500.

(INTERPOLATE HOLES)

G13.1

G0 C90. X7.0

Z.25

G12.1

G1 Z0. F100.

X7.375 F40.

X7.75

G3 X6.25 Z-.05 R.375

X7.75 Z-.1 R.375

X6.25 Z-.15 R.375

X7.75 Z-.2 R.375

X6.25 Z-.25 R.375

X7.75 Z-.3 R.375

X6.25 Z-.35 R.375

X7.75 Z-.4 R.375

X6.25 Z-.45 R.375

X7.75 Z-.5 R.375

X6.25 Z-.55 R.375

X7.75 Z-.6 R.375

X6.25 Z-.65 R.375

X7.75 Z-.7 R.375

X6.25 Z-.75 R.375

X7.75 Z-.8 R.375

X6.25 Z-.85 R.375

X7.75 Z-.9 R.375

X6.25 Z-.95 R.375

X7.75 Z-1. R.375

X6.25 R.375 F4.

X7.75 R.375

G1 X7.

Z.25 F500.

Z2. F500.

(INTERPOLATE HOLES)

G13.1

G0 C180. X7.0

Z.25

G12.1

G1 Z0. F100.

X7.375 F40.

X7.75

G3 X6.25 Z-.05 R.375

X7.75 Z-.1 R.375

X6.25 Z-.15 R.375

X7.75 Z-.2 R.375

X6.25 Z-.25 R.375

X7.75 Z-.3 R.375

X6.25 Z-.35 R.375

X7.75 Z-.4 R.375

X6.25 Z-.45 R.375

X7.75 Z-.5 R.375

X6.25 Z-.55 R.375

X7.75 Z-.6 R.375

X6.25 Z-.65 R.375

X7.75 Z-.7 R.375

X6.25 Z-.75 R.375

X7.75 Z-.8 R.375

X6.25 Z-.85 R.375

X7.75 Z-.9 R.375

X6.25 Z-.95 R.375

X7.75 Z-1. R.375

X6.25 R.375 F4.

X7.75 R.375

G1 X7.

Z.25 F500.

Z2. F500.

(INTERPOLATE HOLES)

G13.1

G0 C270. X7.0

Z.25

G12.1

G1 Z0. F100.

X7.375 F40.

X7.75

G3 X6.25 Z-.05 R.375

X7.75 Z-.1 R.375

X6.25 Z-.15 R.375

X7.75 Z-.2 R.375

X6.25 Z-.25 R.375

X7.75 Z-.3 R.375

X6.25 Z-.35 R.375

X7.75 Z-.4 R.375

X6.25 Z-.45 R.375

X7.75 Z-.5 R.375

X6.25 Z-.55 R.375

X7.75 Z-.6 R.375

X6.25 Z-.65 R.375

X7.75 Z-.7 R.375

X6.25 Z-.75 R.375

X7.75 Z-.8 R.375

X6.25 Z-.85 R.375

X7.75 Z-.9 R.375

X6.25 Z-.95 R.375

X7.75 Z-1. R.375

X6.25 R.375 F4.

X7.75 R.375

G1 X7.

Z.25 F500.

Z2. F500.

G13.1

G28 U0. M05 M25

G28 W0. M95 (CHIP CONVEYOR OFF)

M66

M30

%

 

Below is what my post actually outputs. (no Y-axis).

The text in red is where the post seems to reset C-axis to zero each time.(from what i gather in the debugger).

 

(*****************************)

N1(INTERPOLATE HOLES)

M67

G28 U0. W0. H0.

T0303(.75 SOLID CARBIDE EMILL W/.032 RAD.)

M93 (CHIP CONVEYOR ON)

G54 G98 M68

G0 C0.

G0 Z2.

X7.

G97 S2500 M24

G12.1

G1 X7. C0. F500.

Z.25

Z0. F100.

X7.375 F40.

X7.75

G3 X6.25 Z-.05 R.375

X7.75 Z-.1 R.375

X6.25 Z-.15 R.375

X7.75 Z-.2 R.375

X6.25 Z-.25 R.375

X7.75 Z-.3 R.375

X6.25 Z-.35 R.375

X7.75 Z-.4 R.375

X6.25 Z-.45 R.375

X7.75 Z-.5 R.375

X6.25 Z-.55 R.375

X7.75 Z-.6 R.375

X6.25 Z-.65 R.375

X7.75 Z-.7 R.375

X6.25 Z-.75 R.375

X7.75 Z-.8 R.375

X6.25 Z-.85 R.375

X7.75 Z-.9 R.375

X6.25 Z-.95 R.375

X7.75 Z-1. R.375

X6.25 R.375 F4.

X7.75 R.375

G1 X7.

Z.25 F500.

Z2. F500.

(INTERPOLATE HOLES)

F500.

F500.

Z.25

Z0. F100.

X7.375 F40.

X7.75

G3 X6.25 Z-.05 R.375

X7.75 Z-.1 R.375

X6.25 Z-.15 R.375

X7.75 Z-.2 R.375

X6.25 Z-.25 R.375

X7.75 Z-.3 R.375

X6.25 Z-.35 R.375

X7.75 Z-.4 R.375

X6.25 Z-.45 R.375

X7.75 Z-.5 R.375

X6.25 Z-.55 R.375

X7.75 Z-.6 R.375

X6.25 Z-.65 R.375

X7.75 Z-.7 R.375

X6.25 Z-.75 R.375

X7.75 Z-.8 R.375

X6.25 Z-.85 R.375

X7.75 Z-.9 R.375

X6.25 Z-.95 R.375

X7.75 Z-1. R.375

X6.25 R.375 F4.

X7.75 R.375

G1 X7.

Z.25 F500.

Z2. F500.

(INTERPOLATE HOLES)

F500.

F500.

Z.25

Z0. F100.

X7.375 F40.

X7.75

G3 X6.25 Z-.05 R.375

X7.75 Z-.1 R.375

X6.25 Z-.15 R.375

X7.75 Z-.2 R.375

X6.25 Z-.25 R.375

X7.75 Z-.3 R.375

X6.25 Z-.35 R.375

X7.75 Z-.4 R.375

X6.25 Z-.45 R.375

X7.75 Z-.5 R.375

X6.25 Z-.55 R.375

X7.75 Z-.6 R.375

X6.25 Z-.65 R.375

X7.75 Z-.7 R.375

X6.25 Z-.75 R.375

X7.75 Z-.8 R.375

X6.25 Z-.85 R.375

X7.75 Z-.9 R.375

X6.25 Z-.95 R.375

X7.75 Z-1. R.375

X6.25 R.375 F4.

X7.75 R.375

G1 X7.

Z.25 F500.

Z2. F500.

(INTERPOLATE HOLES)

F500.

F500.

Z.25

Z0. F100.

X7.375 F40.

X7.75

G3 X6.25 Z-.05 R.375

X7.75 Z-.1 R.375

X6.25 Z-.15 R.375

X7.75 Z-.2 R.375

X6.25 Z-.25 R.375

X7.75 Z-.3 R.375

X6.25 Z-.35 R.375

X7.75 Z-.4 R.375

X6.25 Z-.45 R.375

X7.75 Z-.5 R.375

X6.25 Z-.55 R.375

X7.75 Z-.6 R.375

X6.25 Z-.65 R.375

X7.75 Z-.7 R.375

X6.25 Z-.75 R.375

X7.75 Z-.8 R.375

X6.25 Z-.85 R.375

X7.75 Z-.9 R.375

X6.25 Z-.95 R.375

X7.75 Z-1. R.375

X6.25 R.375 F4.

X7.75 R.375

G1 X7.

Z.25 F500.

Z2. F500.

G13.1

G28 U0. M05 M25

G28 W0. M95 (CHIP CONVEYOR OFF)

M66

M30

%

 

If i were to chain all 4 holes and not use Transform, the code would be correct like below.

The problem is, I want my operator to be able to read the code, & this is much easier if the C-axis is rotated between each location and basically the same program is run again.

Also this is just an extrememly simple example to be able to read the code easier.

 

(*****************************)

N1(INTERPOLATE HOLES)

M67

G28 U0. W0. H0.

T0303(.75 SOLID CARBIDE EMILL W/.032 RAD.)

M93 (CHIP CONVEYOR ON)

G54 G98 M68

G0 C0.

G0 Z2.

X7.

G97 S2500 M24

G12.1

G1 X7. C0. F500.

Z.25

Z0. F100.

X7.375 F40.

X7.75

G3 X6.25 Z-.05 R.375

X7.75 Z-.1 R.375

X6.25 Z-.15 R.375

X7.75 Z-.2 R.375

X6.25 Z-.25 R.375

X7.75 Z-.3 R.375

X6.25 Z-.35 R.375

X7.75 Z-.4 R.375

X6.25 Z-.45 R.375

X7.75 Z-.5 R.375

X6.25 Z-.55 R.375

X7.75 Z-.6 R.375

X6.25 Z-.65 R.375

X7.75 Z-.7 R.375

X6.25 Z-.75 R.375

X7.75 Z-.8 R.375

X6.25 Z-.85 R.375

X7.75 Z-.9 R.375

X6.25 Z-.95 R.375

X7.75 Z-1. R.375

X6.25 R.375 F4.

X7.75 R.375

G1 X7.

Z.25 F500.

X0. C3.5 F500.

Z0. F100.

X.375 F40.

X.75

G3 X-.75 Z-.05 R.375

X.75 Z-.1 R.375

X-.75 Z-.15 R.375

X.75 Z-.2 R.375

X-.75 Z-.25 R.375

X.75 Z-.3 R.375

X-.75 Z-.35 R.375

X.75 Z-.4 R.375

X-.75 Z-.45 R.375

X.75 Z-.5 R.375

X-.75 Z-.55 R.375

X.75 Z-.6 R.375

X-.75 Z-.65 R.375

X.75 Z-.7 R.375

X-.75 Z-.75 R.375

X.75 Z-.8 R.375

X-.75 Z-.85 R.375

X.75 Z-.9 R.375

X-.75 Z-.95 R.375

X.75 Z-1. R.375

X-.75 R.375 F4.

X.75 R.375

G1 X0.

Z.25 F500.

X-7. C0. F500.

Z0. F100.

X-6.625 F40.

X-6.25

G3 X-7.75 Z-.05 R.375

X-6.25 Z-.1 R.375

X-7.75 Z-.15 R.375

X-6.25 Z-.2 R.375

X-7.75 Z-.25 R.375

X-6.25 Z-.3 R.375

X-7.75 Z-.35 R.375

X-6.25 Z-.4 R.375

X-7.75 Z-.45 R.375

X-6.25 Z-.5 R.375

X-7.75 Z-.55 R.375

X-6.25 Z-.6 R.375

X-7.75 Z-.65 R.375

X-6.25 Z-.7 R.375

X-7.75 Z-.75 R.375

X-6.25 Z-.8 R.375

X-7.75 Z-.85 R.375

X-6.25 Z-.9 R.375

X-7.75 Z-.95 R.375

X-6.25 Z-1. R.375

X-7.75 R.375 F4.

X-6.25 R.375

G1 X-7.

Z.25 F500.

X0. C-3.5 F500.

Z0. F100.

X.375 F40.

X.75

G3 X-.75 Z-.05 R.375

X.75 Z-.1 R.375

X-.75 Z-.15 R.375

X.75 Z-.2 R.375

X-.75 Z-.25 R.375

X.75 Z-.3 R.375

X-.75 Z-.35 R.375

X.75 Z-.4 R.375

X-.75 Z-.45 R.375

X.75 Z-.5 R.375

X-.75 Z-.55 R.375

X.75 Z-.6 R.375

X-.75 Z-.65 R.375

X.75 Z-.7 R.375

X-.75 Z-.75 R.375

X.75 Z-.8 R.375

X-.75 Z-.85 R.375

X.75 Z-.9 R.375

X-.75 Z-.95 R.375

X.75 Z-1. R.375

X-.75 R.375 F4.

X.75 R.375

G1 X0.

Z.25 F500.

Z2. F500.

G13.1

G28 U0. M05 M25

G28 W0. M95 (CHIP CONVEYOR OFF)

M66

M30

%

 

2 of my lathes here do not have Y-axis, and I do this type of operation almost daily.

 

I have searched through this forum and have not seen anyone make mention of this issue.

So I always thought that I was doing something wrong.

 

Anybody else come across this?

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