Also referenced on the web:
http://www.vscore.biz/vsguide.html
Blade Angles...
You may have noticed the absence of the mention of larger blade angles (45,
60, 90 degrees etc.). Although the data we have shown for 30 degree blades
can be extrapolated out for usage on other angles, we suggest you consider
the following;
If there is no specific use for the bevel-type finish of a larger angle
blade, we contend that the clearance/leverage advantage that they offer for
separation, is a poor substitute for using the proper web thickness. If this
seems a little radical...then good! There are, of course, many specific
application blades that, for design reasons, must be used. Beyond that
however, there seems to be a great deal of confusion over blade angles. As
far as we can tell, larger blade angles appear to be a throw-back to an
earlier time when space was less of an issue, and Z-axis control was not as
precise as it is today. With today's designs, 30 degree blades seem to offer
the optimum balance of a narrow score path, ample clearance for separation
and acceptable blade life performance.
Kevin Glidden
-----Original Message-----
From: Brian Chandler [mailto:[log in to unmask]]
Sent: Wednesday, March 04, 2009 2:58 PM
To: [log in to unmask]
Subject: [TN] V-Score Standards?
Are there any industry standards for the angle of the V-score? Our equipment
supplier suggests 30 deg. but some of our PCB suppliers say they don't have
30 deg blades.
Thanks in advance,
Brian
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