Indicating angled faces with a Haimer

V

vmipacman

Cast Iron

Joined

Nov 21, 2014

Location

Virginia, USA

• Feb 24, 2021

• #1

Been doing this a while but wanted to verify logic.

I should rotate the spindle so the haimer dial face is at right angles with the face being measured so as not to induce both an X-Y component. There is little enough friction between the haimer tip and face that I can jog either x or y of the machine into the face.
That sound right?
Thank

 

A

Agfrvf

Aluminum

Joined

Feb 5, 2018

• Feb 24, 2021

• #2

No, you introduce runout error from tool holding setup. Indicate angled surfaces as a trig function with spindle in same orientation. The probe tips should be concentric spheres if not replace with a fresh one.

Note: do not measure flat to angle faces as this introduces error.

 

Cole2534

Diamond

Joined

Sep 10, 2010

Location

Oklahoma City, OK

• Feb 24, 2021

• #3

I don't think the Haimer is the proper tool for this job.

 

V

vmipacman

Cast Iron

Joined

Nov 21, 2014

Location

Virginia, USA

• Feb 24, 2021

• #4

Then what is the proper tool?
I find two points on the face to plot a straight line, then a third on another intersecting face.

 

V

vmipacman

Cast Iron

Joined

Nov 21, 2014

Location

Virginia, USA

• Feb 24, 2021

• #5

I’m using the haimer like a reneshaw. Probing points on angled faces. But where’s the reneshaw is ok to approach faces on a 45 deg angle, I don’t think the haimer lines non orthogonal indicating.

 

S

snowshooze

Stainless

Joined

Sep 15, 2010

Location

Anchorage, Alaska, USA

• Feb 24, 2021

• #6

I noticed real quick that my Haimer does not read out in true thousandths.
It repeats fine, but the graduations are arbitrary.
At least on X and Y. I haven't checked accuracy so far as Z.
I am usually looking for a true edge, or the center of something when I use it.
I do use it for comparative Z measurments, but I am going to zero on the Haimer, and taking my readings off the control.
I expect if you worked to zero off the control like that, you'd be ok.

 

V

vmipacman

Cast Iron

Joined

Nov 21, 2014

Location

Virginia, USA

• Feb 24, 2021

• #7

I probably misused the “indicate” term.
I just mean edge finding angles surfaces. So I always go to zero on the haimer.

 

A

Agfrvf

Aluminum

Joined

Feb 5, 2018

• Feb 24, 2021

• #8

vmipacman said:

I’m using the haimer like a reneshaw. Probing points on angled faces. But where’s the reneshaw is ok to approach faces on a 45 deg angle, I don’t think the haimer lines non orthogonal indicating.

Click to expand...

I get it, but it should read consistant. Between the DRO x/y displacement across the two points they should give you a solid trig function.

Just be sure to hit the same zero on the same face with the same spindle orientation.

 

G

gregormarwick

Diamond

Joined

Feb 7, 2007

Location

Aberdeen, UK

• Feb 25, 2021

• #9

The haimer does not have any means to discriminate between X-Y movement, the stylus is mounted on a spherical pivot, so all radial movement is linearised purely by the direction of travel.

There is also no way to lock out the axial movement of the stylus so if displacing the stylus against a sloped surface you can never have 100% certainty that you are not inducing some axial movement of the stylus and getting a false reading.

Using a Haimer for this is risky, and you should have some other means to verify your results.

 

J

jmullett

Aluminum

Joined

Apr 22, 2009

Location

Northwest Ohio, USA

• Mar 2, 2021

• #10

I use gage pin against the angled surface and the fixture base or vise. I use the Haimer probe to pick up the edge and top of the pin (highest reading). Works great to locate parts tilted on a sine vise. I use a drawing of the setup with the pin and the dimensions to the pin tangent points done in CAD to set my coordinate offsets.