On 26 September 2011 11:05, andy pugh <bodge...@gmail.com> wrote:
> The behaviour seems to be encoded in interp_convert.cc, lines
> 4365-4366 and 4399-4400.
> If safe_x is safe, why add/subtract anything from it, why not just
> move back to it, and retract?
This patch seems to make the G76 preview look a little more like what
one might expect. I haven't tried threading with it, but don't foresee
any problems.
I think the current behaviour explains problems I have had with
internal lathe threading.
It also does remove that funny little wrong-way-wiggle at the
beginning of the cycle.
Does anyone know why the current return passes are offset by the cut depth?
--------------------
[PATCH] Simplify G76 threading. This patch makes all return moves
happen along the
"drive line". This makes it easier to do tight-clearance internal threading.
Signed-off-by: Andy Pugh <a...@bodgesoc.org>
---
src/emc/rs274ngc/interp_convert.cc | 10 ++--------
1 files changed, 2 insertions(+), 8 deletions(-)
diff --git a/src/emc/rs274ngc/interp_convert.cc
b/src/emc/rs274ngc/interp_convert.cc
index 026eac0..e2c3f2b 100644
--- a/src/emc/rs274ngc/interp_convert.cc
+++ b/src/emc/rs274ngc/interp_convert.cc
@@ -4072,10 +4072,7 @@ threading_pass(setup_pointer settings,
block_pointer block,
double start_y, double start_z, double zoff, double taper_dist,
int entry_taper, int exit_taper, double taper_pitch,
double pitch, double full_threadheight, double target_z) {
- STRAIGHT_TRAVERSE(block->line_number, boring?
- safe_x + depth - end_depth:
- safe_x - depth + end_depth,
- start_y, start_z - zoff, AABBCC); //back
+ STRAIGHT_TRAVERSE(block->line_number, safe_x, start_y, start_z -
zoff, AABBCC); //back
if(taper_dist && entry_taper) {
DISABLE_FEED_OVERRIDE();
START_SPEED_FEED_SYNCH(taper_pitch, 0);
@@ -4106,10 +4103,7 @@ threading_pass(setup_pointer settings,
block_pointer block,
start_y, target_z - zoff, AABBCC); //over
}
STOP_SPEED_FEED_SYNCH();
- STRAIGHT_TRAVERSE(block->line_number, boring?
- safe_x + depth - end_depth:
- safe_x - depth + end_depth,
- start_y, target_z - zoff, AABBCC); //out
+ STRAIGHT_TRAVERSE(block->line_number, safe_x, start_y, target_z -
zoff, AABBCC); //out
ENABLE_FEED_OVERRIDE();
}
--
1.7.0.4
--
atp
"Torque wrenches are for the obedience of fools and the guidance of wise men"
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