Rapid-Air AIR FEED / CUT-TO-LENGTH WITH KEYPAD - Manual (Page 6)

5
AIR FEED PROGRESSION SET UP
The feed guide rollers are adjustable by loosening the machine screws and moving the
rollers to the desired position. For best results the stock should be centrally located in
the feed.
The notches in the guide rails provide for coarse feed adjustment of the stop block. The
final feed adjustment for stroke length is made by the screw in the center of the stop
block. The final feed adjustment is aided by the use of accurately dimensioned spacers
or gage blocks placed between the adjusting screw and the main cushion bolt, and with
the air pressure turned on to keep the slide block tight against the main body.
With the air pressure off, the material is then inserted between the guide rollers and
passed under the feed clamp. Lift the stock clamp and push the material through to the
starting position. Turn on the air (75-120 PSI) and the feed is ready to operate.
The last adjustment, if necessary, would be the speed adjusting valve. The valve
adjustment is located on top of the main body on the opposite side of the actuating
valve. Adjust the screw for minimum impact by turning clockwise and for faster speed
by turning counterclockwise. When the impact is high, slippage is possible resulting in
poor repeatability and also part fatigue. Refer to the diagram below.
MAINTENANCE
The ram head assembly requires very little maintenance. There are four dynamic “O”
rings that would need to be replaced on the rare occasion of an air leak. These are as
follows per Rapid Master head assembly drawing #24000001 parts list.
item 43, part no. 60108212 1 req.
item 45, part no. 60108234 1 req.
item 90, part no. 60108269 2 req.
To absorb mechanical shock, reduce noise and prolong machine life, a rubber bumper
is incorporated into the assembly. Some stroke accuracy could be affected by rubber
deterioration. Stroke adjustment will compensate for any small overall stroke increase.
The rubber bumper (item 52, part no 35900037), should bbe examined during any “O”
ring maintenance procedure.