Thread: Chinese Spindles
there is also a model with a cam to operate the atc fitted to the top of the spindle which will allow a direct drive motor, i'll see if i can find the link.
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Can anybody read chinese.? I would really like to know what this says and motor spec.
I think I'm reading it for the 400W motor has.
At £170 for motor and drive this is cheap and not worth messing with steppers. Don't think it includes encoder like but still I'm sure they will be on there some where cheap enough.?
Edit: Maybe it does include encoders becasue I'm sure the bit say 2500(chinese squigle) means 2500ppr the squigle bit I hope means x 4 for quadriture so 10,000PPR encoders.?
Last edited by JAZZCNC; 26-05-2012 at 10:13 AM.
It looks like BT30 taper tooling is capable of much more than 6000rpm, so it makes you wonder why that spindle can't do it - is it just not balanced very well, or cheap bearings? That would explain the price.
Last edited by Jonathan; 26-05-2012 at 11:14 AM.
To get '>6000rpm and 1000rpm should the need arise' is challenging. The vast majority of spindles use induction motors and to get the variable speed we use a VFD. The problem with this is you can only get full power down to about half the motor's rated rpm, then below that it drops linearly. So in short either you use a massively overrated motor, or have belts so you can change the drive ratio and keep the motor operating in the rated power region. On my micro lathe I went for the former, which would have been expensive except I had already got the motor.
26-05-2012 #38Always bear in mind that your own resolution to succeed is more important than any other - Abe Lincoln
But I do agree the 6K is a bit on the low side for some jobs 10K minimum would be nicer, 30K Woopie dooo.
Thanks for offering about asking for translation, yes please.
26-05-2012 #40Always bear in mind that your own resolution to succeed is more important than any other - Abe Lincoln
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