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Ron Branch @ Verisurf

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Everything posted by Ron Branch @ Verisurf

  1. No I sure do not. Send it to me again.
  2. Well Randy drilling equates to plunge milling is an essence. You are putting all the force in an upward direction where all the strength of any machine is located. When you look at turning or milling you are now putting side load on a tool and this in turn puts side load on the worm drive which puts the head in position this is on any 5 axis machine the greater the pivot distance the greater the wear on the worm gear that positions the head into that position. This seems like a simple concept, but over looked by so many people with respect to doing this type of work. A good thing to do is have a break-in routine and most think of a break in routine as something you only do with new machine. It is really a good practice with any machine you run. The warm up cycles in all reality a break in cycle is meant to normalize the way the spindle and get everything in a state where it is ready to run. This seems again to a lot of companies a waste but in the long term makes a lot of sense and if you have every machine on a cold morning trying to hold .0001 and have fits till the machine warms up you know what I am talking about. The bigger machines have thermal compensation in them to make up for difference as the day gets warmer as the weather gets warmer to allows for the natural nature of any material on earth as it heats up it grows. Or some people who do very large parts and have to hold specific tolerances have programs for cold days and hot days taking this change in to account. Seems off what I am saying but it all relates to wear and putting to much pressure on a machine in a specific area. You create heat anywhere you have long periods of high pressure. Taking that .400 doc for say 72" puts lets say about 27 tons(just a guess for those of you that want to do the math be my guest) of force at one focal point on the worm drive. This force creates heat and that causes that worm drive to expand may only .0000005 difference. Do that all day and then position or move the head really creates a high spot this high spot then gets wore off by the harder drive gear to the softer worm drive. Doing this repeatedly causes wear which in turn causes inaccuracy in the machine. This translates all the way down the scope of things to making and getting poor parts. In the long run relates to poor performance out of the machine. This is something that has faced engineers for many many years how do you design something that not wearing or heating up but last a long time giving predictable results are always the same everytime you use it. Your car, home appliance, carpet, clothes all go through this cycles seems weird to say .400 D.O.C. does not relate but it does. You wear a size large and try to wear a size small you tear the shirt. You take a 1952 VW and keep trying to do 120mph in it not going to happen and it is going to tear up at some point. The list goes on and on the point is yeah that machine might take the .400 D.O.C and seems great, but when you try to rotate that head and hold a .002 true position like a part I just did on our Integrex and wonder why it will not do it remember those .4 doc verse some .200 depths that may take longer, but stay in the threshold of what maybe the engineers had in mind when they were looking at the wear coefficients to keep the machine in tolerance over a longer period of time verse a shorter period of time. The machine might just be designed to take these cuts and you may be in the area that it is designed for, but you are still going to create wear. It will relate at some point down the road just something to keep in mind. Sorry for the length and hope it did not jump around too much for you.
  3. Did you use the top plane in which to rotate from and did you use toolplane or coordiante?
  4. Well what I doing was giving you the same thing. You can get facny and have it defualt to your post's highfeed rate for retracts. Just depends on if you want to bitch about Mastercam or change somethings to get what you want.
  5. If you contact your dealer they can help you modify your post to do such a thing. If you know how to modify posts you could easily do this. HTH

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