Bowl Tooling Techniques - Case 10
Pointy Tapered Part with Large Diameter Head
End Orientation - Part traveling diameter to diameter, hanging centerline axis vertical with tapered end down
For use with flat track bowls such as:
8" - CB 151 or CB150 on Model 5 Base Unit
11" - CB 274 or CB 273 on Model 8 Base Unit
18" - CB 154 or CB 152 on Model 10 Base Unit
24" - CB 168 or CB 167 on Model 15 Base Unit
Note: Flat track bowls generally have a 7 degree positive rake to allow parts to find the corner of the track and sidewall of the bowl.
Orientation Sequence
Parts are allowed to travel up the bowl helix randomly until they reach the last full quadrant of the bowl. A wiper is installed in conjunction with a spill-off/dish-out to allow only one row of parts to pass. A pressure break wedge can be installed to relieve back pressure in downstream tooling and reject a line of parts that may "snake" together if the pointy end of a part is allowed to enter an open cap end of an adjacent part. A slight radius can be machined into the track to lead the tapered end of the part toward the center of the impending parallel hanging rails. A "pocket" can be machined in the bowl with parallel hanging rails spanning the pocket to allow parts to start across the bridge and hang with the tapered end down. The pocket should be machined deep enough to allow enough space for correctly oriented parts to hang and allow misoriented parts to pass under the hanging parts. Parts that don't hang will spill into the pocket on either side of the bridge rail and return to the bottom of the bowl. Parts that do not freely fall away from the parallel rails can be ejected back into the bowl by use of an "air jet". Air jets are regulated streams of air used to precisely manipulate parts without the fear of creating a jam situation that "hard tooling" could create. Once hanging parts are settled in the rails, a cover/hold-down can be introduced to contain the part.
