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  1. R

    Sometimes youre the Hammer other times youre the nail

    The manual specified both metric and in Imperial. Not all of us do our work in Metric. I literally wont change machine units to do a job in Metric. As I said its 5% of our work.
  2. R

    Sometimes youre the Hammer other times youre the nail

    .005" INCHES. 95% of our work is done in imperial.
  3. R

    Sometimes youre the Hammer other times youre the nail

    Again this machine is a name ive never heard of. Im used to running Haas and Doosan and Moris. This is a DMC? Apparently it is a Doosan Clone. Even the colors are suspiciously close. Unless it is a Doosan made machine just rebranded. But regardless there is a something off in the machine...
  4. R

    Sometimes youre the Hammer other times youre the nail

    Most modern CNC machines unless they are highly expensive $250k+ machines are only repeatable in their own manual to within .002" My CNC operators manual even shows the turret is only repeatable to .005" I showed my boss this as well and hes not thrilled. Im not making excuses. But now ive...
  5. R

    Sometimes youre the Hammer other times youre the nail

    So another update. The engineer for the company these parts are for had our QC department do a complete 100% inspection of EVERY dimension. All Diameters were perfectly within tolerance. Locations of the grooves seems to be a possible issue not 100% certain. However the overall length being...
  6. R

    Sometimes youre the Hammer other times youre the nail

    And yes we are looking into a more rigid holder for the grooving operation. Likely just a top clamp tool-flo holder and their inserts.
  7. R

    Sometimes youre the Hammer other times youre the nail

    I think I found the issue. I do believe the machine has an issue with its screw. I touched off and indicatator on my jaws zeroed everything out on the indicator. Moved the turret .150 in the z+ axis. And back. Was off .0047"
  8. R

    Runout (Roundness error) on a turned part

    It sounds like the parts "springing" from the stress relief of the material as its being machined and still attached to the parent bar it has structure behind it. The moment you part it off the part looses that structural backing and pop, out of round. Had this happen a few times. Always able...
  9. R

    Sometimes youre the Hammer other times youre the nail

    Yeah. And I likely should have checked far better but since ive never once had an issue of my parts being this "out of whack", im going to do a few tests tomorrow before running the parts I need to tomorrow. And see if its something with the turret. 20 years doing this and never had this.
  10. R

    Sometimes youre the Hammer other times youre the nail

    Well I was checking with a groove mic and a set of Calipers, little hard to check a part in the machine with a cadillac gage and indicator. But also were really not allowed to have all the measuring tools we need at the machine bench, such as a surface plate and height gage and what not. This...
  11. R

    Sometimes youre the Hammer other times youre the nail

    Yeah I think something could be up with the machine. I will know better tomorrow as I will running some parts in the CNC that will be utilizing that axis a lot. 8 Long boring operations. But only time will tell once I get into that job tomorrow. I will know pretty quick if the Z axis is...
  12. R

    Sometimes youre the Hammer other times youre the nail

    I did think that. And very well could be an issue. But dont know how I would check it hydraulic tank looks clean. And didnt wanna run the chuck pressure to high as the wall thickness of the part is about .200" And yeah its a lathe job.
  13. R

    Sometimes youre the Hammer other times youre the nail

    Im using a spacer ring against a step in the soft jaws. Shouldnt be able to move away from the cutting force. And this machines tool setter was crashed by a former employee and never fixed. So my tools are all set using a 1" gage block. The jaws were turned for this job. So yeah im...
  14. R

    Sometimes youre the Hammer other times youre the nail

    Nope. My supervisor says a 9 year old Machine is "Brand New". And its NEVER the Machines fault. Hell Ive have 450 part runs all within .001" of each other. This is the first time Ive had so many inconsistencies in my Z dimensions. So mad.
  15. R

    Sometimes youre the Hammer other times youre the nail

    So last year in Novemberish I got a job to do for our shop. Not a hard job but slightly complex with mutliple operations. But I did what I thought was the right process and has worked for me countless times. Well the parts finally got to QC and EVERY. SINGLE. PART is wrong. I used a stop...
  16. R

    3.5" NPT G76 Cycle

    Bahahahahahaahahahahaha....Subcontract. Thats funny. Ok. read this stuff tomorrow when ready to start these nipples. There is a reason were not purchasing them as our local supplier has told us 3.5" NPT nipples/pre threaded pipes are $200 minimum and 10 week lead time. Subcontract. LOL...
  17. R

    3.5" NPT G76 Cycle

    Its not having a bad attitude. I am an underling Machinist that works 2 jobs, works weekends, I literally dont have time to read an entire book. Its not that im ungrateful. Some people have one job and nothing else to do. Thats fine. So as I said Im just trying to figure out what values...
  18. R

    3.5" NPT G76 Cycle

    This part isnt going to be a perfect part. And from what ive heard you never wanna take that heavy of a first cut. I dont know. But yeah time isnt an issue on this job. Its not a production job its literally for in house assembly operation. There is no inspector checking these and there is...
  19. R

    3.5" NPT G76 Cycle

    G01 X4.1 Z.2 F.05 M08 G76 P040055 Q0030 R0005 G76 X3.916 Z-1.25 P1000 Q0020 R-.0438 F.125
  20. R

    3.5" NPT G76 Cycle

    None of our machines are live tooling because the owner is a cheapskate. LOL. And the i model is newer sure. But the G76 also works on a 30 year old control we use. So I dont think its necessary to buy your book no offense. I am not serious about programming nor am I going to read a book...

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