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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> http://www.metalworking.com/news_servers.html
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> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for
> OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
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> List Mom
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> Yahoo! Groups Links
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