scans changing hit number during online run vs. programmed offline

dwade 11 months ago

I've got a real problem with the DEMON changing the number of hits in a scan, programmed offline vs. being ran online. My real issue is pulling hits from these scans for intersect points on short surfaces. It there a way to lock this up so the hits are what I programmed it to or do I need to get my program changed. Picture a small piece of pie (each side approximately 7mm long) with chamfers on the 3 corners at 0.65mm to 0.7mm. Running the program offline produced exactly what I the CAD/print shows and I've been beating my head against the wall (run this through Inspect so I saw no data) tryin to get this figured out.

Any help is greatly appreciated.

Duane

Parents

NinjaBadger 11 months ago

Confirmed:

Number of hits offline = hit density on surface

Number of hits online = hit density of path travelled by tip centre.


DAT_B      =FEAT/CONTACT/CYLINDER/DEFAULT,CARTESIAN,IN,LEAST_SQR
            THEO/<40,30,0>,<0,0,1>,30,10
            ACTL/<39.996,30.009,0>,<-0.000369,0.0003466,0.9999999>,29.933,10
            TARG/<40,30,0>,<0,0,1>
            START ANG=0,END ANG=360
            ANGLE VEC=<1,0,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=YES
              NUMHITS=7,NUMLEVELS=3,DEPTH=1,END OFFSET=2.1,PITCH=0
              SAMPLE METHOD=SAMPLE_HITS
              SAMPLE HITS=0,SPACER=0
              AVOIDANCE MOVE=BOTH,DISTANCE BEFORE=10,DISTANCE AFTER=10,DIRECTION=ALONG FEATURE VECTOR
              FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
            SHOW HITS=NO
$$ NO,
            hit density 4 pnts/mm
            ASSIGN/PI=4*ATAN(1)
            ASSIGN/CIRCUMF=DAT_B.D*PI
            ASSIGN/CIRCNUMHITS=CIRCUMF*4
            ASSIGN/OFFLINEHITS=376
$$ NO,
            4mm tip gives a 26mm tip centre diameter
            ASSIGN/DIAM_PRB_CENT=26
            ASSIGN/CIRCUMF_CENT=DIAM_PRB_CENT*PI
            ASSIGN/ONLINEHITS=CIRCUMF_CENT*4
ONLINE_SCAN=FEAT/SCAN,LINEARCLOSE,NUMBER OF HITS=325,SHOW HITS=NO,SHOWALLPARAMS=NO
            MEAS/SCAN
              BASICSCAN/LINE,NUMBER OF HITS=325,SHOW HITS=NO,SHOWALLPARAMS=NO
              ENDSCAN
            ENDMEAS/
OFFLINESCAN=FEAT/SCAN,LINEARCLOSE,NUMBER OF HITS=376,SHOW HITS=NO,SHOWALLPARAMS=NO
            MEAS/SCAN
              BASICSCAN/LINE,NUMBER OF HITS=376,SHOW HITS=NO,SHOWALLPARAMS=NO
              ENDSCAN
            ENDMEAS/

Reply

NinjaBadger 11 months ago

Confirmed:

Number of hits offline = hit density on surface

Number of hits online = hit density of path travelled by tip centre.


DAT_B      =FEAT/CONTACT/CYLINDER/DEFAULT,CARTESIAN,IN,LEAST_SQR
            THEO/<40,30,0>,<0,0,1>,30,10
            ACTL/<39.996,30.009,0>,<-0.000369,0.0003466,0.9999999>,29.933,10
            TARG/<40,30,0>,<0,0,1>
            START ANG=0,END ANG=360
            ANGLE VEC=<1,0,0>
            DIRECTION=CCW
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=YES
              NUMHITS=7,NUMLEVELS=3,DEPTH=1,END OFFSET=2.1,PITCH=0
              SAMPLE METHOD=SAMPLE_HITS
              SAMPLE HITS=0,SPACER=0
              AVOIDANCE MOVE=BOTH,DISTANCE BEFORE=10,DISTANCE AFTER=10,DIRECTION=ALONG FEATURE VECTOR
              FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
            SHOW HITS=NO
$$ NO,
            hit density 4 pnts/mm
            ASSIGN/PI=4*ATAN(1)
            ASSIGN/CIRCUMF=DAT_B.D*PI
            ASSIGN/CIRCNUMHITS=CIRCUMF*4
            ASSIGN/OFFLINEHITS=376
$$ NO,
            4mm tip gives a 26mm tip centre diameter
            ASSIGN/DIAM_PRB_CENT=26
            ASSIGN/CIRCUMF_CENT=DIAM_PRB_CENT*PI
            ASSIGN/ONLINEHITS=CIRCUMF_CENT*4
ONLINE_SCAN=FEAT/SCAN,LINEARCLOSE,NUMBER OF HITS=325,SHOW HITS=NO,SHOWALLPARAMS=NO
            MEAS/SCAN
              BASICSCAN/LINE,NUMBER OF HITS=325,SHOW HITS=NO,SHOWALLPARAMS=NO
              ENDSCAN
            ENDMEAS/
OFFLINESCAN=FEAT/SCAN,LINEARCLOSE,NUMBER OF HITS=376,SHOW HITS=NO,SHOWALLPARAMS=NO
            MEAS/SCAN
              BASICSCAN/LINE,NUMBER OF HITS=376,SHOW HITS=NO,SHOWALLPARAMS=NO
              ENDSCAN
            ENDMEAS/

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