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View Full Version : BP- vertical quill depth indicator ideas



Abner
11-21-2012, 09:44 AM
Hi Guys,

I keep wishing I had some way, with calipers or dial indicator of measuring quill depth on my BP clone. Do you do it this way or do you measure table rise?

Abner

Toolguy
11-21-2012, 11:34 AM
There is an inexpensive digital caliper type attachment you can add to the quill stop area that works fairly well.

lakeside53
11-21-2012, 12:11 PM
I did both. For my prior BP, in addition to the quill attachment I mounted an old x-axis scale and dro (beaten up box on top of the other) just for the knee . Less than $100 surplus. Loved it. Mounting is tricky on the curved cast surfaces so I made it adjustable in all axis as below.

My current cnc BP (also full manual control) doesn't have a knee scale and every now and then it pisses me off ;) One day I'll add the 4 scale and summing box.


http://i238.photobucket.com/albums/ff150/lakeside53/DSC_8101Medium.jpg


Scale mount.
http://i238.photobucket.com/albums/ff150/lakeside53/DSC_8102Medium.jpg


Head mount:
http://i238.photobucket.com/albums/ff150/lakeside53/DSC_8103Medium.jpg

Boucher
11-21-2012, 01:02 PM
This shows the way mine is set up. The bracket is attached with two screws.
http://i109.photobucket.com/albums/n50/boucherbyron/IMG_0308Small.jpg

JCHannum
11-21-2012, 01:52 PM
CDCO tools has a scale assembly that attaches to the quill. For some reason, I can't get a direct link to it, but click on DRO Systems and scroll down;

http://www.cdcotools.com/index.php

Rich Carlstedt
11-22-2012, 12:09 AM
I do it the way it was made to be used.
Come down and touch the part with the end mill, and then raise / spin the stop up to the required depth move.
For depth settings , I use number drills , or dowel pins or adjustable parrallels to set the stop distance.
Fast and expedient.
Otherwise, I use the knee, which is very accurate.
Just don't lock/clamp the knee without knowing the additional elevation change !

Rich

Jaakko Fagerlund
11-22-2012, 04:02 AM
I do it the way it was made to be used.
..and those who follow todays technology get the work done faster and more efficiently than fudging around with the quill stop.

John Stevenson
11-22-2012, 04:10 AM
Or trying to convert an imperial quill reading stop to metric.

Fitted a vertical DRO bar to mine and would be lost without it.

JCHannum
11-22-2012, 08:19 AM
Rich is pointing out that there is more than one way to do a job. I picked up a purpose made Mitutoyo digital scale like the CDCO scales I linked to on the cheap. I only use it occasionally, mostly when drilling to depth on a critical application. Most of the time; for keyways, when plunge cutting or milling pockets and such, where multiple passes are made to reach the desired depth; I use the knee.

For my purposes, the digital scale is a convenience, not a necessity. But, then, I also don't have a DRO for the mill table either. I have a couple of long reach dial indicators, 0-2" & 0-5" and have brackets for mounting them on the table when needed.

BTW, adjustable parallels can be had in Imperial and Metric, I have a set of each. Makes conversion unnecessary.

Spin Doctor
11-22-2012, 09:43 AM
Jo blocks.

Rich Carlstedt
11-22-2012, 10:19 AM
..and those who follow todays technology get the work done faster and more efficiently than fudging around with the quill stop.

I find that an interesting comment !
Not having a "stop" makes depth errors far more likely in my experience, and requires full attention !
Also, while some may think it's faster, I can do another task, while my power quill feed is running.( DRO is no help here)

If you are using the mill like a drill press, and making multiple quill moves , then yes, a digital RO will help immensely.
But each of us are dedicated to our methods, and whatever works is fine as long as it makes you happy.
Rich

I think a DRO on a drill press would be a far more productive application ?

JCHannum
11-22-2012, 12:16 PM
If you are using the mill like a drill press, and making multiple quill moves , then yes, a digital RO will help immensely.
But each of us are dedicated to our methods, and whatever works is fine as long as it makes you happy.
Rich

I think a DRO on a drill press would be a far more productive application ?

As I mentioned, I use mine more for drilling than anything else. In my experience, when using the DRO for drilling, it is much slower than coming down to a positive stop as you are slowing the feed down as you approach the end point. For one or two holes, the DRO will have the advantage. For multiple holes, the positive stop will increase the production rate.

There have been several articles in HSM as well as threads on this and other sites detailing modifying and installing dial and digital calipers on quill feeds. It provides a convenience, but I would not consider it a must by any means.