PriddyShiddy
Cast Iron
- Joined
- Mar 1, 2011
- Location
- anaheim, ca
Last night I ran my production parts and my OM2A had cut each one progressively higher in Z moving X-
The fixture holds 6 rows of 19 parts. The code calls sub program that faces each part for a row, then calls M97 sub for all 19 parts tool 1, then same for T2 etc. When it's done I have a seperate file that takes a skim cut straight across all 19. When it took the skim cut it was hitting one side and not the other. The parts are tapered to a 0.000" line width then skim cut to the correct line weight (0.004") The actual machining cut each part a few tenths maybe a thou higher with each part right to left on the table.
**EDIT TO ADD*** The parts are 3D machined with tapered engravers so cutting higher in Z makes them wider. I have run 5,000 parts on the machine in 2 months without this issue. I tried again this morning. Same thing. Machine is a 2010 with only 300 hours when it arrived here in Feb.
I pulled the first and last part from a row after I initial facing and they are the same length. Jogged an indicator across the fixture, pushed pulled. Fixture is tight and square. Tried pulling parts out with 14" channel locks, they are tight. I pulled a file from last week that was fine (still in machine hard drive) and it did the same thing. Each part slightly (wider, cut higher in Z) from right to left.
After thinking about it all night I checked the minimum oil system and realized it is still almost full from when I got the Machine (used) 2 months ago. I have 600 hours on the machine in the last 2 months and I'm pretty sure it should be giving more oil than that. Could stiction from inadequate oil cause this? An immediate and repeatable error? Mind you I ran parts earlier in the day and they were fine.
I pulled the Z way cover and while not dripping wet the screw didn't seem completely dry neither did the rails. The oil reservoir is nearly full, pressing the solenoid valve Spike's the pressure up to 30 PSI and the sensor obviously has not detected a lack of oil pressure on the back of the machine where it splits off to each axis. This makes me think it isn't the solenoid valve or air pressure but a clogged line somewhere or everywhere.
Any ideas before I get Haas out here to poke the thing with a stick?
The fixture holds 6 rows of 19 parts. The code calls sub program that faces each part for a row, then calls M97 sub for all 19 parts tool 1, then same for T2 etc. When it's done I have a seperate file that takes a skim cut straight across all 19. When it took the skim cut it was hitting one side and not the other. The parts are tapered to a 0.000" line width then skim cut to the correct line weight (0.004") The actual machining cut each part a few tenths maybe a thou higher with each part right to left on the table.
**EDIT TO ADD*** The parts are 3D machined with tapered engravers so cutting higher in Z makes them wider. I have run 5,000 parts on the machine in 2 months without this issue. I tried again this morning. Same thing. Machine is a 2010 with only 300 hours when it arrived here in Feb.
I pulled the first and last part from a row after I initial facing and they are the same length. Jogged an indicator across the fixture, pushed pulled. Fixture is tight and square. Tried pulling parts out with 14" channel locks, they are tight. I pulled a file from last week that was fine (still in machine hard drive) and it did the same thing. Each part slightly (wider, cut higher in Z) from right to left.
After thinking about it all night I checked the minimum oil system and realized it is still almost full from when I got the Machine (used) 2 months ago. I have 600 hours on the machine in the last 2 months and I'm pretty sure it should be giving more oil than that. Could stiction from inadequate oil cause this? An immediate and repeatable error? Mind you I ran parts earlier in the day and they were fine.
I pulled the Z way cover and while not dripping wet the screw didn't seem completely dry neither did the rails. The oil reservoir is nearly full, pressing the solenoid valve Spike's the pressure up to 30 PSI and the sensor obviously has not detected a lack of oil pressure on the back of the machine where it splits off to each axis. This makes me think it isn't the solenoid valve or air pressure but a clogged line somewhere or everywhere.
Any ideas before I get Haas out here to poke the thing with a stick?