Work with probe

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14 Mar 2019 11:37 #128575 by pl7i92
Replied by pl7i92 on topic Work with probe
is the tool running
or did you use a Precision PIN
Calibrated pin or diameter
is the Z Axis Straighten

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14 Mar 2019 16:33 #128598 by vmihalca
Replied by vmihalca on topic Work with probe
The tool is not running, its probe with cable. I have calibrated the tip of the probe by spinning it and touching with a DTI.
What precision pin? I am testing it on a ballbearing which has precise dimensions
The machine is an 900kg SyilX7 mill, so the column is straight and however the Z travel is about 5mm

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14 Mar 2019 17:41 #128600 by andypugh
Replied by andypugh on topic Work with probe

vmihalca wrote: Any idea where can the 0.2 error come from?


How far does the probe tip have to deflect before it triggers?
What type of probe is it?

0.2mm seems a lot, but I have heard reports of some probes being that bad.

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14 Mar 2019 20:12 #128606 by Mike_Eitel
Replied by Mike_Eitel on topic Work with probe
If you probe a 100 mm distance, do you still miss by 0.2mm?

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14 Mar 2019 20:59 #128608 by vmihalca
Replied by vmihalca on topic Work with probe
This is the probe
www.sorotec.de/shop/3D-Finder---3D-Measu...411.html?language=en

It trips in less than 0.01mm so if I jog back and forth with increments of 0.01 its gonna trip/untrip the probe.
I've went to smaller divisions and I saw that the precision is about 0.006
I am using 30mm stylus with 2mm ruby ball.

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14 Mar 2019 21:00 #128609 by vmihalca
Replied by vmihalca on topic Work with probe
Haven't tried that yet, I tried to stick to the ballbearing dimensions that are accurate enough so that I have a reference.

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14 Mar 2019 21:29 - 14 Mar 2019 21:40 #128610 by Leon82
Replied by Leon82 on topic Work with probe
Are you able to build that error into a probing routine?

Get yourself a ring and probe it and whatever you're off with just the probing routine until it reads correct.

I guess it easier to cheat the ball size though
Last edit: 14 Mar 2019 21:40 by Leon82.

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15 Mar 2019 12:56 #128651 by andypugh
Replied by andypugh on topic Work with probe
Is the error constant with probe velocity or does it reduce with speed?

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15 Mar 2019 13:00 #128652 by andypugh
Replied by andypugh on topic Work with probe
(Supplementary question) Are you looking at the position that the probing move stops in, or the values in the probe result parameters?

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16 Mar 2019 16:18 #128748 by vmihalca
Replied by vmihalca on topic Work with probe
Once I get to the shop, I'll come up with a video showing the response to all questions, perhaps you can spot something that I'm doing wrong

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