A new "smart" tool in SpaceClaim recognizes standard-sized holes in imported geometry, as well as recognizes chamfers, counterbores
, and countersinks.
For example, a counterbore
locking fastener arrangement secures a flywheel, weighing several thousand pounds, to canning machinery.
The bolt face counterbore
wall of the Model 75 has two slots--one for a spring-loaded extractor, another for passage of a fixed-blade ejector located in the floor of the receiver bridge.
To reassemble the gas block, first insert the gas pipe piston with the counterbore
facing up into the lower gas block.
Center it in the chuck and use a center drill to counterbore
The company says along with the new speed prep feed system is a precision ID mount end prep machine tool designed to bevel, compound bevel, J prep, face and counterbore
pipe, fittings and valves.
To accommodate a shrink-fit bearing, accuracy of the finished counterbore
must be +/- 0.0006".
With the stretcher in place against the cleats (C), drill recess holes (counterbore
holes) and 9/32-in.
To mill this counterbore
we are using a 0.750" diameter 4-flute end mill.
In the new design, the holes are formed with a lead-in chamfer to facilitate pushpin insertion and a counterbore
formed inside the hole that creates a shoulder to hold the pins in place.
where [p.sub.c] the back pressure built up in the counterbore
as the plug enters it, and [A.sub.c] = the effective area under pressure.