Holes In Auto CAD COMMON HOLES IN MACHINED
- Slides: 19
Holes In Auto. CAD
COMMON HOLES IN MACHINED PARTS u COUNTERBORE • COUNTERSINK • DRILL/REAM
COUNTERBORE
COUNTERBORE - RIGHT & WRONG ON THE TOP VIEW SHOW BOTH DIAMETERS AS SOLID CIRCLES ON THE SIDE VIEW SHOW COUNTER BORE DEPTH - USE HIDDEN LINES
COUNTERSINK
COUNTERSINK - RIGHT & WRONG ON TOP VIEW- ON SIDE VIEW- SHOW BOTH DIAMETERS AS SOLID CIRCLES SHOW ANGLE & DEPTH OF COUNTERSINK
DRILL/REAM
THRU-HOLE - RIGHT & WRONG NOTE: USE CONTINUOUS LINETYPE IN TOP VIEW
BLIND DRILL -RIGHT & WRONG USE CONTINUOUS LINE TYPE ON TOP VIEW SHOW THE DEPTH OF THE HOLE IN SIDE VIEWUSE HIDDEN LINES
HOLE ANNOTATIONS ALWAYS USE HOLE DIAMETER - NEVER THE RADIUS!!!! ALWAYS NOTE IF IT IS BLIND OR THRU!!! ALWAYS NOTE DEPTH IF IT IS C’BORE OR BLIND ALWAYS NOTE ANGLE IF IT IS C’SUNK
THRU-HOLE ANNOTATIONS USE DIAMETER USE ‘THRU’ NOTE LEADER ARROWHEAD IS ON OUTER EDGE OF CIRCLE
BLIND HOLE ANNOTATIONS TO MAKE THE DEPTH SYMBOL SHOWN IN THE THIRD VIEW, USE THE SYMBOL DROPDOWN IN THE MTEXT DIALOG BOX.
COUNTERSINK ANNOTATIONS FOR THRU - NOTE DIAMETER OF THREAD, THRU DIAMETER OF C’SINK X ANGLE OF C’SINK FOR BLIND - NOTE DIAMETER OF THREAD, DIAMETER OF C’SINK X ANGLE OF C’SINK DEPTH
COUNTERBORE ANNOTATIONS FOR THRU - NOTE DIAMETER THRU DIAMETER C’BORE DEPTH OF C’BORE FOR BLIND - NOTE DIAMETER X DEPTH DIAMETER C’BORE DEPTH OF C’BORE
REPETITIVE HOLES A SPACE MUST BE USED BETWEEN THE X & THE DIMENSION
REPETITIVE HOLES PATTERNED THE SPACING BETWEEN THE HOLES IS INDICATED AS 4 X THE SPACING MUST BE DETERMINED BY DIVIDING THE DISTANCE BY THE NUMBER OF SPACES BETWEEN THE HOLES
SUMMARY THERE ARE THREE MAIN TYPES OF HOLES SHOWN IN FABRICATED PARTS - • DRILL • COUNTERSINK • COUNTERBORE
SUMMARY HOLES ARE SHOWN IN A SYMBOLIC RATHER THAN ‘TRUE’ MANNER.
SUMMARY HOLE NOTES FOLLOW AN ANSI STANDARD FOLLOW THE RULES!!!!
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