Cam No. 3 (28 and 28A) monitors the effectiveness of the press braking system at the top of the stroke. When cam No. 3 is positioned according to Paragraph 2.3, deviations in stopping position greater than + 15” from top dead center will be detected.
2.0 Installation
n! Danger:
Prior to installation of the Airflex’“’ Timing Rotorseal and Cam Limit Switch, make sure that the machinery is secured in a safe manner. Failure to do so could result in serious injury or possibly death.
n! Warning:
Only qualified maintenance personnel should install, adjust or repair these devices. Faulty workmanship will result in unreasonable exposure to hazardous conditions, injury or severe damage to the equipment.
n! C a u t i o n :
Before you begin any work, study this manual so that you completely understand what is required. Do not risk injury. Follow the instructions.
2.1Mounting
Instructions for mounting the Airflex’) timing rotorseal, foot and shaft mounted cam limit switches are given below. Any combination of these times may be used in the control system. Follow those instructions that pertain to the timers being used.
2.1 .1 Timing Rotorseal:
The Airflex@ timing rotorseal is custom designed to fit the flywheel or bullgear of an Airflex@ FSPA clutch and brake package as shown in Figure 2. The flywheel or bullgear
All control systems, except those capable of inch and continuous functions only, require two timers. When two timers are used, except on control panels with semicontinuous func- tion, only the two piece cam No. 3 of the “A” timer is required for brake monitoring. The cam No. 3 of the “B” timer, is available for a user’s special function such as a counter. The optional one piece cam No. 3 profile is the same as cam No. 4 shown in Figure 1.
LS4 is controlled by split cams 4 (33) and 5 (33A). This set of cams determines the top stop setting and the amount of time the run buttons must be depressed before the operator can remove his hands from them. If the run buttons are released before this predetermined setting, the press will stop.
The minimum dwell setting of these cams is 135”, and they are fannable up to 255” in increments of 40 ‘. For the proper setting of these cams, refer to Paragraph 2.3.
Grease Hole \ | /- Grease Fitting |
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and Lockwasher
Figure 2. Timing rotorseal mounting configuration
The timing rotorseal end plate (36) is used to assemble the device to the crankshaft. The end plate also provides the necessary bearing running clearance and must be properly shimmed. Follow instructions given in Form PP3000.
Before mounting the timing rotorseal, check to be sure its direction of rotation corresponds with that of the flywheel or bullgear.
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