Re: [CAD_CAM_EDM_DRO] Re: Vexta stepper, or maybe.....

On Wednesday, April 3, 2002, at 05:03 PM, RC wrote:

> Dave, thanks for the info... you mentioned a stepper/gearhead with a 2
> to 1
> ratio stepper, well I think that is what you were saying, at any rate, I
> believe that would work great for my "Z" axis, the ball screw is a 3mm
> pitch
> so, gearing it down would help keep the stepper from creeping at small
> movements, and add power ....do you think of that logic? Also my Yamaha
> linear z axis is so efficient, that the resistance of the gearhead would
> keep it from moving, when power is off the stepper......But do gearheads
> have backlash? If anyone out have any stepper/gearhead with the above
> specs, and would like to share more info, please let me know.....

Vextas have a tapered gear system to eliminate as much as they can
without getting into elaborate anit-backlash methods.

-Jerry

>
>
> Russ
> ----- Original Message -----
> From: dave_ace_me <davemucha@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Wednesday, April 03, 2002 5:02 AM
> Subject: [CAD_CAM_EDM_DRO] Re: Vexta 2Phase 4 volt, 1.1 amp #C518-9212
> stepper????
>
>
>> I saw a pair of these on e-bay (since you mentioned it)
>>
>> They are NEMA 23 single stack. Not really powerful, less than
>> 50in/oz holding torque. But holding tourque is not the end all and
>> be all of steppers. There was a gentleman on here last week, 2:1
>> NEMA23 into a 10 TPI leadscrew, yet the power delivered was over 300
>> pounds of force !
>>
>> Here is what you can do with something like these.
>>
>> Circuit board etcher, Dremel type milling machine.
>>
>> small lightwieght router, think trim router, but there is no reason
>> your table could not be 48" x 48"
>>
>> Plasma cutting table
>>
>> but the best thing you could do is anything ! put something
>> together, see how easy it is, then see your mistakes and not only
>> will you have more certainty about learning, you will have
>> accomplished something !
>>
>> Dave
>>
>>
>>
>>
>>
>>
>>
>> --- In CAD_CAM_EDM_DRO@y..., Jerry Biehler <j.biehler@v...> wrote:
>>>
>>> On Tuesday, April 2, 2002, at 09:56 PM, RC wrote:
>>>
>>>> Currently listed on e-bay.... say there new in box, seller has no
>> idea!
>>>>
>>>> Russ
>>>
>>> Yeahm saw those the other day. I thought they were odd ball motors.
>>> Those are older motors. Might give Oriental Motors a call they
>> might be
>>> able to help you. Tell them you have a bad motor with this motor
>> and you
>>> need a cross reference part number for a current replacement.
>>>
>>> -Jerry
>>>
>>>> ----- Original Message -----
>>>> From: Jerry Biehler <j.biehler@v...>
>>>> To: <CAD_CAM_EDM_DRO@y...>
>>>> Sent: Tuesday, April 02, 2002 6:34 PM
>>>> Subject: Re: [CAD_CAM_EDM_DRO] Vexta 2Phase 4 volt, 1.1 amp #C518-
>> 9212
>>>> stepper????
>>>>
>>>>
>>>>>
>>>>> On Tuesday, April 2, 2002, at 09:41 PM, RC wrote:
>>>>>
>>>>>> Jerry, it has 6 wires, and is 2 phase... hope this helps
>>>>>
>>>>> Hmm. Any idea how old? Vexta's current book lists the first
>> number as
>>>>> the # of phases, second number as the width and the third as the
>>>>> length.
>>>>>
>>>>> -Jerry
>>>>>> ----- Original Message -----
>>>>>> From: Jerry Biehler <j.biehler@v...>
>>>>>> To: <CAD_CAM_EDM_DRO@y...>
>>>>>> Sent: Tuesday, April 02, 2002 6:20 PM
>>>>>> Subject: Re: [CAD_CAM_EDM_DRO] Vexta 2Phase 4 volt, 1.1 amp
>> #C518-9212
>>>>>> stepper????
>>>>>>
>>>>>>
>>>>>>>
>>>>>>> On Tuesday, April 2, 2002, at 09:06 PM, RC wrote:
>>>>>>>
>>>>>>>> First of all, I want to thank everyone that sent info on
>> Vexta
>>>>>>>> stepper
>>>>>>>> motors, it's been a big help, but still, for some reason, can
>> not
>>>>>>>> find
>>>>>>>> any info on the Vexta # C518-9212. other than it is a 4 volt,
>> 1.1
>>>>>>>> amp
>>>>>>>> double shaft stepper, but no info on holding torque .....or
>> want
>>>>>>>> they
>>>>>>>> can be used for. So if anyone knows anything on this series
>> of
>>>>>>>> stepper, please direct me!
>>>>>>>>
>>>>>>>> Thanks again,
>>>>>>>> Russ
>>>>>>>
>>>>>>> How many wires?
>>>>>>>
>>>>>>> -Jerry
>>>>>>>>
>>>>>>>>
>>>>>>>> [Non-text portions of this message have been removed]
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