Internal/concave Path Tool Radius Compensation Example G41/G42

From Dynomotion

Revision as of 19:08, 26 August 2016 by TK (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Internal/concave paths must not be angled as it is impossible for a round tool to follow such a path without gouging.  Instead arcs must be used with a radius larger than the tool radius.  Here is a GCode Example showing a possible internal path and the resulting tool center path with tool radius compensation turned on.

Note a carefully chosen entry move with a convex corner must be made to avoid gouging the path.

InternalCountourG41.png


The G Code:

( Tool Table should contain:          )
( Slot 1 Length 0.000 Diam 0.500 )

G49 G40 G54
G20  (inches mode)

G0 x1y0z0 (Path with no compensation)
T1 M6
F120
G1X4
G3X5Y1I0J1
G1Y4
G3X4Y5I-1J0
G1X1
G3X0Y4I0J-1
G1Y1
G3X1Y0I1J0

G0 x2y3z0
G41 D1 (Tool #1 Radius comp Left of contour)
F60
G1X2Y1
G3X3Y0I1J0
G1X3Y0
G1X4
G3X5Y1I0J1
G1Y4
G3X4Y5I-1J0
G1X1
G3X0Y4I0J-1
G1Y1
G3X1Y0I1J0
G1X3
G40
G0X2y3z0
M30

Retrieved from "https://www.dynomotion.com/wiki/index.php?title=Internal/concave_Path_Tool_Radius_Compensation_Example_G41/G42&oldid=300"