Re: [CAD_CAM_EDM_DRO] Re: Prox switches

I'll most likely end up getting these, I noticed
however that they are all NO, is there any out
there that are NC?? I was always under the
impression that NC was the switch of choice for
limit switch's?

Jarrett

----- Original Message -----
From: "Robert Campbell" <bob@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, March 03, 2006 11:28 AM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Prox switches


> Jarrett,
>
> The sensing distance is from the face to the
> object being sensed.
>
> I did some work with Multicam and talked with
> their engineers about
> proximity sensors. 2 mm is the best as it is not
> as likely to sense chips or
> other foreign objects. I use 12 mm barrel type
> with a quick disconnect
> cable. You do want a quick disconnect as it
> makes is it easy to screw in the
> sensor.
>
>
> Bob Campbell
> Bob Campbell Designs
> www.Campbelldesigns.com
> Mach 2/3 breakout boards
> Relay boards
> Spindle Speed boards
> Stepper motors
> Plasma Torch Height control
>
> ----- Original Message -----
> From: "jerryflyguy" <hjjohnson@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Friday, March 03, 2006 11:17 AM
> Subject: [CAD_CAM_EDM_DRO] Re: Prox switches
>
>
>> Good to know Bob, I've seen the ones at
>> Automation Direct, but
>> figured if I could get these for $10 then it'd
>> be a good move.
>>
>> When they talk about sensing range they are
>> talking about the
>> distance from the face of the unit to the
>> sensing flag or are they
>> talking about the range in which the sensor
>> goes off as the flag
>> pass in front of it. ie; a 30mm range on my x
>> axis would stop the
>> gantry some place in that 30mm but not any more
>> accuratly than that,
>> or does the sensor just have to be w/in the
>> 30mm to see the flag??
>>
>> If a 2mm is better, would a 1mm barrel type be
>> even better?? How
>> accurate should a person expect one of these
>> type sensor's to be?
>> Can I consistantly stop my gantry w/in
>> 0.010"???
>>
>> I was originally thinking some type of
>> mechanical switch, but
>> figured this type of switch might be better
>> since there is no
>> mechanical interaction and nothing should wear
>> out.
>>
>> Thanks
>> Jarrett
>>
>>
>>> Jarrett,
>>>
>>> No, the sensing range is too big. You want a
>>> sensing range of 2
>> mm. I buy
>>> mine form Automation Direct.
>>>
>>> Bob Campbell
>>> Bob Campbell Designs
>>> www.Campbelldesigns.com
>>> Mach 2/3 breakout boards
>>> Relay boards
>>> Spindle Speed boards
>>> Stepper motors
>>> Plasma Torch Height control
>>>
>>> ----- Original Message -----
>>> From: "jerryflyguy" <hjjohnson@...>
>>> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
>>> Sent: Friday, March 03, 2006 10:31 AM
>>> Subject: [CAD_CAM_EDM_DRO] Prox switches
>>>
>>>
>>> > Can anyone tell me if these will or will not
>>> > work as a prox
>> switch for
>>> > my limit and home switches?
>>> >
>>> > http://cgi.ebay.com/Sick-Inductive-Proximity-
>>> > Sensor_W0QQitemZ7595054869QQcategoryZ42899QQrdZ1QQcmdZViewItem
>>> >
>>> > You may have to cut and paste that link
>>> > together to make it
>> work. I
>>> > know nothing about these types of switches
>>> > so any help offered
>> would
>>> > be appreciated!!
>>> >
>>> > Thanks
>>> > Jarrett
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
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>> NOTICE: ALL POSTINGS TO THIS GROUP BECOME
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> OFF Topic POSTS: General Machining
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> List Mom
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