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  1. #1
    Join Date
    Jun 2006
    Posts
    424

    Re: 15" OI TT1800SY

    Quote Originally Posted by lshingleton View Post
    One machine in one cell had 2.5 Million components for 8 Speed Transmission 2 yrs no alarms not stoppage and many more -----Make it simple it runs but im getting older now and really have had enough of productions gimmicks and trials of the yrs from vision systems to tooling touch probes and eyes and really everyone of them fail badly and wernt worth the time and effort ----------Most engineers forget the actual environment machines run in and its not a QA lab thats for sure -Good luck and hopefully you never have to lift a pallet from a machine through its top ATC door as the tool forgot its settings and banna peeled very large reamer and fuse welded itself to the fixture !!!
    I'm still trying to get my new under warranty machines to be serviced to the point of running to pre-sale advertised specifications. It's great if you hate technology and run great without it, but it has nothing to do with Doosan needing to fix these problems for all the rest of us who depend on technology for stability in materials like 17-4 stainless which cut great most of the time (emphasis on most of the time). The load monitor also safeties unreliable stuff like Chipblaster high pressure coolant systems that have float valves that fail, and dump solenoids that get stuck, and PLC's that fail. If you lose coolant, the machine's safety net is load monitoring. The lack of coolant will spike a load the monitoring can feed hold, and prevent the inevitable tool failure that will happen from happening.

    That might also prevent the turret from getting kicked and a service call from needing to happen. Inversely that may happen in lieu of this, after the new under warranty equipment is damaged because the software wasn't supplied functionally and wasn't serviced. So it has a purpose- that's why it exists, and why all the competitive brands in CNC turning machines have a product they use to sell the machine to normal customers who like technology and depend on it.

    We're actually using the monitoring to some limited success right now on even these screwed up new machines, but we are essentially fighting to get all the tools monitored because we don't run on luck in this shop. We run on good machines which were always sold by Doosan until these two which are not nearly as good for these reasons.

    We actually were told this move to I series plus was for thermal compensation because Fanuc penalizes their good customers like Doosan on 31I with heavy fees, and we've had to shut thermal comp off because it began acting up. The Doosan turning thermal compensation can't handle air movement like an air conditioning unit. Shop air flow makes the machine think that the casting is changing size.

  2. #2
    Join Date
    Nov 2007
    Posts
    362

    Re: 15" OI TT1800SY

    Sorry but was on the fore front of Tech for 35 yrs and push its limits even in Robotics so i am all for tech that actually works and seen more systems come and go and fail and money wasted time after time ----------But hey hats off yous are triers even if its in so many directions ------Maybe try and see if a company can make an actual front door that doesn't fall off its barn door wheels before 50,000 Cycles would be better money spent ---------------Double linear ways and balls screw driven slider doors we had installed didn't stop !!-----------Maybe while you can tell the company that Axis should always travel in a minus direction from home position not center of chuck that we had to change on every Doosan lathe from the factory we bought to normal procedures -Why you ask ?-------------If its minus then your geometric is a minus and if some clown or machine malfunctions deletes if the machine moves backwards on its first move and alarms out provided the programmer knows enough to have a first value positive 1!---------So much to learn

  3. #3
    Join Date
    Jun 2006
    Posts
    424

    Re: 15" OI TT1800SY

    Quote Originally Posted by lshingleton View Post
    so i am all for tech that actually works
    So Am I. Tool load monitoring worked on the machine Doosan replaced with this less advanced current one. Either Doosan will fix it, or people will just know that they are going to start moving backwards with future release machines. Everything on the specification list should work. The machine should be tested and debugged before sale. Stuff like thermal compensation where one of the temp sensors monitors outside casting air temperature and responds to air currents that have nothing to do with the casting temperature, need to be addressed.

    Without fixing the thermal comp, there is no good excuse for moving to the I series control and breaking tool load monitoring in the first place. We've had to shut that feature off in the September 2020 TT1800SY II and in one of the 2020 Puma 2100SY II's. It's flawed. It's embarrassing, and customers shouldn't be paying for porked up component build outs, just to be forced to shut off spec features on the floor for lack of function. - If the one sensor hangs the whole system they should expedite a sheet metal or plastic box to keep the air current off the one sensor so the whole system doesn't have to be shut off to get the machine to stop jumping around in diameter. The problem isn't having a problem. It's denying the problem and refusing to fix it. That goes to lack of pride / lack of dedication to customers, lack of commitment to excellence. Between tool failures for jumping around in X during bores and drilling ops, and TLM issues, we had to double staff on second shift. It's more expensive to run the machines now. When tools start breaking and machines need extra attention guys get strung out and the operation can't stop, so when our employee feedback is negative we have to add redundant staffing to prepare for and try to prevent contingencies.

    By the way, we also have Doosan mills with tool setters that work great. We set the entire magazine to the setter, probe the parts and the parts get cut accurately without blend issues, and probes fault themselves if the parts aren't loaded right. Without a tool setter and probe, everyone would have to be a toolmaker to run good parts. The primary issue with needing toolmakers (in lieu of technology) to run good parts is 90% of those guys sit down at an operation or settup interview and attempt to change the position to job estimator or foreman, or some really cake desk pilot job, wasting everyone's time in the interview. AKA they don't want to actually make the process run, so it doesn't matter if they could theoretically do the work and stand in for the technology, because they will refuse to do the work. The technology rather, compensates for prima donnas without work ethic by allowing industry to operate with guys that actually work for a living. Someone smart in the background sets up the process, but he's at a desk so he's willing to do that job. The one smart guy keeps you from needing to have 40 interviews with toolmakers to find 4 that want to settup and run machines which is what toolmakers are supposed to be good at and intended for.

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