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MultiAxis Help!


slyym
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Hi guys. I'm programming a  multi axis toolpath on a DMF 260 using the B and C axis. B on the head and C on the table. When I run the toolpath its really jerky and not smooth and the tool is gouging a lot. I've messed around with the Cycle 832 settings but I cant stop it from gouging the part. I'm wondering if its on the mastercam side of things. I'm looking at the Utility page on a morph between 2 curves toolpath and see a check box for smooth surface normal but I've never used that and don't know what it does. Any help would be greatly appreciated. Thanks!

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move you tool axis pivot point out further so the motion is less violent???

Yea I've messed around with that a little but it still seems like it literally stops and starts with each line of code. Is that just how table head machines run or what?

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Gcode is right, some controls need a lot of points to run smoothly. Other than that toolpaths look fine.

You are on the shopfloor so i suppose it is ok but as I didn't find a stock level in your file (i don't know how it really is, if your holder definition is ok, if you planned a roughing operation before these 5-axis toolpaths...) but 'just in case' pay attention to this:

post-2201-0-15676600-1458825463_thumb.jpg

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Gcode is right, some control needs a lot of points to run smoothly. Other than that toolpaths look fine.

You are on the shopfloor so i suppose it is ok but as I didn't find a stock level in your file (i don't know how it really is, if your holder definition is ok, if you planned a roughing operation before these 5-axis toolpaths...) but 'just in case' pay attention to this:

Good catch. Yea I basically just posted something to test it out. I'm running it 6 inches above the part right now.

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is your post turning the rotatory axis brakes off?

if the brakes are automatically on it will stop at every block, engage the brake

then unengaged the brake and make the next move

there should be codes to turn the brakes off.. and your post should output them

for a toolpath like this if it's set up properly

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.I just cant seem to figure it out.

 

there may also be machine  codes to control the direction of rotation

the should probably be set to shortest distance

 

this could also be a post issue

look at the C axis code carefully...

it is moving in one direction ... or is it cycling back and forth

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.I just cant seem to figure it out.

 

there may also be machine  codes to control the direction of rotation

the should probably be set to shortest distance

 

this could also be a post issue

look at the C axis code carefully...

it is moving in one direction ... or is it cycling back and forth

Its vectored output so its hard to tell

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Here is some of the code.

 

 

  1/4 BALL ENDMILL
N2 T60
N11 M6
N12 G56 D1
N13 CYCLE832(.005,202001)
N14 G0 C53.5 B-52.877
N15 TRAORI
N16 G56 D1
N17 G0 G90 X-5.0345 Y-2.4174 Z6.
N18 M8
N19 S2292 M3
N20 G0 Z.6074 A3=.08 B3=.059 C3=.075
N21 G0 X-5.2909 Y-2.6071 Z.366 A3=.08 B3=.059 C3=.075
N22 G1 G94 X-5.5473 Y-2.7968 Z.1246 A3=.08 B3=.059 C3=.075 F20.
N23 G1 X-5.5481 Y-2.7971 Z.1007 A3=.081 B3=.06 C3=.074  F100.;F6.
N24 G1 X-5.5489 Y-2.7975 Z.0769 A3=.082 B3=.06 C3=.073
N25 G1 X-5.5497 Y-2.7979 Z.0531 A3=.083 B3=.06 C3=.072
N26 G1 X-5.5505 Y-2.7982 Z.0293 A3=.083 B3=.061 C3=.071
N27 G1 X-5.5513 Y-2.7986 Z.0055 A3=.084 B3=.061 C3=.069
N28 G1 X-5.552 Y-2.7989 Z-.0182 A3=.085 B3=.061 C3=.068
N29 G1 X-5.5518 Y-2.7986 Z-.1104 A3=.085 B3=.061 C3=.068
N30 G1 X-5.5504 Y-2.7977 Z-.139 A3=.084 B3=.061 C3=.069
N31 G1 X-5.5485 Y-2.7962 Z-.1687 A3=.083 B3=.061 C3=.071
N32 G1 X-5.5465 Y-2.7948 Z-.1984 A3=.082 B3=.06 C3=.072
N33 G1 X-5.5441 Y-2.793 Z-.2271 A3=.081 B3=.06 C3=.074
N34 G1 X-5.5413 Y-2.7906 Z-.2567 A3=.08 B3=.059 C3=.075
N35 G1 X-5.5385 Y-2.7883 Z-.2862 A3=.079 B3=.059 C3=.076
N36 G1 X-5.5353 Y-2.7856 Z-.3152 A3=.079 B3=.059 C3=.078

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The code looks like it's all moving in the same direction

I'm not familiar with this machine/control

is 2 feedrates on the same line normal??

 

N23 G1 X-5.5481 Y-2.7971 Z.1007 A3=.081 B3=.06 C3=.074  F100.;F6.

 

have you checked to make sure your brakes aren't cycling off and on with each line

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The code looks like it's all moving in the same direction

I'm not familiar with this machine/control

is 2 feedrates on the same line normal??

 

N23 G1 X-5.5481 Y-2.7971 Z.1007 A3=.081 B3=.06 C3=.074  F100.;F6.

 

have you checked to make sure your brakes aren't cycling off and on with each line

 on a Siemens control it won't read what comes after the semicolon.

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The code looks like it's all moving in the same direction

I'm not familiar with this machine/control

is 2 feedrates on the same line normal??

 

N23 G1 X-5.5481 Y-2.7971 Z.1007 A3=.081 B3=.06 C3=.074  F100.;F6.

 

have you checked to make sure your brakes aren't cycling off and on with each line

Yea the brakes are off.

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