Re: COAXIAL INDICATOR
hello guys, hello vette, wow, a thread about coax
![Quote](images/misc/quote_icon.png)
Originally Posted by
sld4121
The shorter the arm, the more accurate the results yes. My "cheaper" version came with a conversion factor of sorts to assist with that
![Quote](images/misc/quote_icon.png)
Originally Posted by
wildwestpat
That table shows that the shorter arm gives less sensitivity i.e. less deflection as seen per divisionon the inbuilt indicator dial
please, can someone share such a table ? thank you ![Smile](images/smilies/smile.png)
so far, i have used only haimer centro :
... when the indicator moves a full revolution on the dial, the palpator moves with circa 0.85 degrees, regardless of palpator length
... if i use the straight palpator from haimer, and the palpator position is :
...... pretty paralel to centro axis, then the dial will show a value pretty close to the real value
...... tilted, then the dial will still show a value pretty close to the real value, but affected by a deviation caused by the tilted angle; the more you tilt the palpator, error increases ( obviously, you can not center a hole if the palpator is tilted 90 degrees, but also, small tilt angles do not input a huge error; mathematically, there is a threshold angle, until which this error is manifested after many digits, thus beyond 0.001, thus it's effect occurs at a small scale, so it can be ignored in reality )
... if i use longer palpators ( homemade, straight / curved / double curved, etc ), then the dial will show a value affected not only by the tilt angle, but also by the ratio between the " length of the custom palpator" and the ''length of haimer palpator = reference length"; for example, if the "longer palpator" is paralel to the centro axis ( tilt angle = 0 ), and it is twice longer then the "haimer palpator = reference length" , and the real value is 0.4, then the dial will indicate 0.2, thus only half of 0.4
about this " reference length ", pls check dimensions from attached image; image is not at real scale, but pls observe that those dimensions are pretty equal; if a "palpator length" = "reference length ± a bit", then displayed value is pretty close to real value / kindly
Ladyhawke - My Delirium, https://www.youtube.com/watch?v=X_bFO1SNRZg