File .hol

[gcambiaghi]

Hello

I have many doubts about the .hol file that I cannot understand.
How is the depth of the thread or hole calculated?
In the .hol file, the depth of the drill or thread is not specified but the difference is calculated using DEPTH_RATIO, who defines the value?

Thanks

[Chris3]

You do in the .hol file. As an example:

In particular you might want to change the DEPTH_RATIO to 2 (see below as an example)

TABLE_DATA
PRO_VERSION      24
THREAD_SERIES    TAP
CLASS            H
TABLE_UNITS      metric
DEPTH_RATIO      2.00
CALLOUT_FORMAT  &METRIC_SIZE x &THREAD_DEPTH[.0] DP /(&PATTERN_NO x)

http://support.ptc.com/help/creo/creo_pma/usascii/index.html#page/part_modeling/part_modeling/part_nine_sub/Using_Hole_Charts.html 

Another example:

https://community.ptc.com/t5/3D-Part-Assembly-Design/tapped-hole-parameters/td-p/294994 

[gcambiaghi]

Thanks for the reply, but the change in DEPTH_RATIO is clear to me, it determines the depth of the drill based on the depth of the thread but where does the thread depth dimension come from? There is no entry in the file where it says 20.4,
I attach the image,

[TomU]

From https://www.ptc.com/en/support/article/CS99906:

• The hard coded predefined rules are :
  • DRILL_DEPTH = 3 x DRILL_DIAMETER
  • THREAD_DEPTH = DRILL_DEPTH / DEPTH_RATIO
  • DRILL_DIAMETER and DEPTH_RATIO are 2 values available in the .hol file

[Chris3]

Sorry, I misread your post. As @TomU noted it is fixed. Consider upvoting this idea:

https://community.ptc.com/t5/Creo-Parametric-Ideas/Add-thread-depth-and-or-drill-depth-to-hol-hole-files/idi-p/456835 

[TomU]

From some reason there is an extra character in that KB article link above making it not work.  Here it is again:

https://www.ptc.com/en/support/article/CS99906