Probe travels too far into hole

[Aitch]

Bear with me, my tech quit and I'm left hanging. My two days instruction ten years ago has expired from dis-use.

I've created a plane and am now attempting to measure a boss ID .5 below this z zero plane. I have typed in the coordinates, diameter, depth for probe to measure etc.
The probe moves to the center of the hole and then bottoms out.
I just need to shorten the travel of the probe as it finds the hole.

[bob mappes]

sounds like you have "find center" turned on

it will go straight down, but search depth cannot be controlled easily

turn it off

then see what happens

OR

the hole vector is incorrect and it wants to approach the hole from the far side

change the vector if the first suggestion does not work

HTH
bob

[#2#]

Bear with me, my tech quit and I'm left hanging. My two days instruction ten years ago has expired from dis-use.

I've created a plane and am now attempting to measure a boss ID .5 below this z zero plane. I have typed in the coordinates, diameter, depth for probe to measure etc.
The probe moves to the center of the hole and then bottoms out.
I just need to shorten the travel of the probe as it finds the hole.

sounds like you have "find center" turned on

it will go straight down, but search depth cannot be controlled easily

turn it off

then see what happens

OR

the hole vector is incorrect and it wants to approach the hole from the far side

change the vector if the first suggestion does not work

HTH
bob

I think Bob is right that you have find hole turned on. However search depth CAN be easily changed. When doing a find hole, the probe will travel along the hole's vector the set search distance below the nominal location. The search distance is set up in the F10 menu under the tab marked motion. Change the search distance to the depth at which you want to measure or less (.5 in your case). So, just before your hole, hit F10 and change the search distance. Hit OK. Then after your hole hit F10 again and change your check distance back to what it was before (if you want to).

I wouldn't set it less because let's say you have a hole that is supposed to be 0.6 in deep and you want to measure it at 0.5. Now let's assume you have your check distance set to 0.2. Let's also assume that the hole is actually only 0.49 deep. When you execute the hole it will search nice and slow to 0.2 and then try to run at movespeed to 0.5. Obviously it will hit the bottom of the hole at 0.49 going movespeed and you'll get an unexpected hit error.

[T Miller]

After you took the plane did you set your zero to it?

[Aitch]

I unchecked Find Hole. Probe moved to hole center then to Spacer distance and took three hits on top of boss then quit.

Was unsuccessful in changing the check distance under the Parameter Settings>Motion tab. It is set at a default of .125. I must be trying to insert the F10 at the wrong place.

[#2#]

I unchecked Find Hole. Probe moved to hole center then to Spacer distance and took three hits on top of boss then quit.

Was unsuccessful in changing the check distance under the Parameter Settings>Motion tab. It is set at a default of .125. I must be trying to insert the F10 at the wrong place.

Hmm, you should be able to insert a change in check distance wherever you want (in between other lines of code).

Your autocircle window should look something like this one. It is for an 11 hit circle located at 0,0,0 with a depth of .5 and a diameter of .5.

And the code with the check distance changes should look like this.

	    CHECK/ 0.5,1
CIR6       =AUTO/CIRCLE,SHOWALLPARAMS = NO,SHOWHITS = YES
            THEO/0,0,0,0,0,1,0.5
            ACTL/0,0,0,0,0,1,0.5
            TARG/0,0,0,0,0,1
            MEAS/CIRCLE
            HIT/BASIC,0.25,0,-0.5,-1,0,0,0.25,0,-0.5
            HIT/BASIC,0.2103,0.1352,-0.5,-0.8413,-0.5406,0,0.2103,0.1352,-0.5
            HIT/BASIC,0.1039,0.2274,-0.5,-0.4154,-0.9096,0,0.1039,0.2274,-0.5
            HIT/BASIC,-0.0356,0.2475,-0.5,0.1423,-0.9898,0,-0.0356,0.2475,-0.5
            HIT/BASIC,-0.1637,0.1889,-0.5,0.6549,-0.7557,0,-0.1637,0.1889,-0.5
            HIT/BASIC,-0.2399,0.0704,-0.5,0.9595,-0.2817,0,-0.2399,0.0704,-0.5
            HIT/BASIC,-0.2399,-0.0704,-0.5,0.9595,0.2817,0,-0.2399,-0.0704,-0.5
            HIT/BASIC,-0.1637,-0.1889,-0.5,0.6549,0.7557,0,-0.1637,-0.1889,-0.5
            HIT/BASIC,-0.0356,-0.2475,-0.5,0.1423,0.9898,0,-0.0356,-0.2475,-0.5
            HIT/BASIC,0.1039,-0.2274,-0.5,-0.4154,0.9096,0,0.1039,-0.2274,-0.5
            HIT/BASIC,0.2103,-0.1352,-0.5,-0.8413,0.5406,0,0.2103,-0.1352,-0.5
            ENDMEAS/
            CHECK/ 0.1,1