Originally Posted by
victorofga
well...
probably these are true..
on assembly lines workers are are not ""professionals"" ..
how much they are educated, I have no clue.. what I am sure, even at ford, or Chevrolet not all lineworker a certified car mechanic... don't even engineer..
we all very well awared all about these problems..
while it is true you wrote..
my viewpoint is on a complicated setup, like servo, atc even added vacuum, the price difference between a praised brand and a Chinese can be 4 times or more..
can be 80000 !!!!
for that money, I will not worry on a bad powersupply I will not care if the spindle burns out on the first day even..
additionally any fix need, ican identify any parts and buy from at least 10 different places..
versus a praised brand use to be a closed system a programmed plc, what means fixing on your own could cost 10K someone reverse engineering the pic... that's a little too costly..
yet... a high run business example a cabinet shop makes weekly 2-3 kitchen, they going to buy an onsrud or a termwood or a European machine..
with Chinese machines we have to be prepared to fix ourself.. and looking trough the forum, were very luckily that many talented guy happy to help..
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in the past months I imported some led screens from shenzen..
one place makes the moduls and cabinets and other place makes only controls..
it doesn't says too much... but from shenzen comes the most electronics.. Nanjing also has electronic production ...
the factory that makes the moduls they have engineer, the other factory with only controls they also have..
and they very helpful..
true also, you have to be clear what you want to order.. when I didn't feel something clear, I asked photos, even videos..
again if it were a wellknown brand not Chinese, sure get a lawyer and sue them.. but agauin the price leaves so huge gap even with custom fee that still very affordable..
not for a large business..
the certifications..
the really critical parts, the spindle, the vfd the powersupply , they 99 percent conform with CE and I believe could pass the UL requirements too..
faulty parts... even boeing can produce faulty parts, despite the quality possible the highest in the industry..
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for your machine, I would call simply the motor manufacturer, if it were mine..
the factory where stepper motor made, or servo, they sure have engineer and they can tell you everything about wiring up a motor..
most machine manufacturer wouldn't be capable to design a control, or even just a simple stepper motor.. not only the Chinese, but anywhere on the earth..
same apply to a bearing or similar """simple looking things""