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Checking Perpendicularity without using a CMM

Standard Work Instruction Software by Dozuki
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B

Big Red

#3
#3
We use a V-block and Indicator when we don't use the CMM.
We usually only use the CMM when we are checking parts for PPAP.
 
D

Dawn

#4
#4
That's what we are using and putting a snug fitting pin in the ID of the gear and then running the indicator off the face. Are we on the right track? (Thanks!)
 
D

Dawn

#5
#5
That's what we are using and putting a snug fitting pin in the ID of the gear and then running the indicator off the face. Are we on the right track? (Thanks!)
 
S

Steven Truchon

#6
#6
Assuming that the form of the hole is good enough to provide a stable datum axis and the hole/pin fit has no obvious play to distort your measurement, you are on a very solid track in my opinion.
 
D

DICKIE

#7
#7
Steven is correct about the pin and hole. I believe this method is superior to almost any other. Just make sure every compoment of MTE is calibrated.
 
J

Jeremy S

#8
#8
If the item being checked is a simple right angle, you can check it with an indi-square and an indicator of the necessary accuracy. Setup the object to be checked on a surface plate, and run the indicator (attached to the indi-square) up and down the surface you are checking.

Any further questions on this method, email me at [email protected]
 
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