Manufacturing Procedure – Hinge Mounting System
Cut stock to mill – L x W x H, 1.25” x 0.5” x 0.75” for base, 1” x 0.5” x 0.5” for the arm.
• Base - x 4
o Vice down stock on parallel bars
o Level off one side with end mill
o Flip stock 180 degrees
o Mill stock down to dimension (0.625” or 0.375”)
o Repeat for other side, same process as above.
o Overhang part out of vice
o Mill protruding end flat
o Flip stock 180 degrees again
o Mill protruding end until 1” length is reached
o Choose parallel bars that leave less than 0.25” between top of bar and top of vice.
o Secure part with 0.625” going up, and 1” going along the vice.
o Find zero on right hand and front side of part (front right corner)
o Mill out fist side of tab (0.375” in from right side) to a depth of 0.375”, leaving a 0.25” flange at the base.
o Mill out second side of tab (0.625” from right hand side) to a depth of 0.375”, leaving a 0.25” flange at the base and between the two cuts just made.
o Remove end mill and replace with center drill
o Zero mill to front right corner again
o Center drill at 0.1875” from right side and 0.1875” from front (this would be on the right flange)
o Center drill at 0.8125” from right side and 0.1875 from the front (this is the left flange)
o Replace center drill with #28 drill bit and drill through the piece for both holes just center drilled.
o Remove piece and flip away from you 90 degrees, so the tab and the flange are between the jaws.
o Zero a center drill to the top right corner of the tab
o Center drill 0.125” from the right side of the tab and 0.1875” from the far side of the tab.
o Replace with #28 drill bit and drill through the piece at this location as well
o De-bur all edges and piece is complete.
• Arm – x4
o Vice down stock on parallel bars
o Level off one side with end mill
o Flip stock 180 degrees
o Mill stock down to dimension (0.375”)
o Repeat for other side, same process as above.
o Overhang part out of vice
o Mill protruding end flat
o Flip stock 180 degrees again
o Mill protruding end until 1” length is reached
o Replace end mill with center drill and zero to bottom left corner of piece
o Center drill 0.1875” from left side and 0.1875” from bottom
o Replace with #28 drill bit and drill through the piece at this location
o Flip piece up in the stock (long way down) with parallel bars below to keep it true.
o Replace drill with center drill and zero to bottom right corner of top face
o Center drill 0.1875” from right side and 0.1875” from bottom.
o Replace with #36 drill bit and drill to a depth of 0.6”
o Remove piece from vice and de-bur all edges
o Using a #6-32 tap, tap the 0.6” blind hole in the end to a depth of at least 0.5”
o Remove tap, blow out threads and piece is complete.
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