(1) Indexing applications with:
HIGH
(2) Indexing applications with: MEDIUM AND LOW SPEED AND SMALL FEED ANGLE (Feed frequency: N = Up to 300 cycles/min.) (Feed angle: 0 = Up to 90°; N × 0 = 20,000 max.) Indexing in this application range is applicable to many machines. Figure 17 shows an example of a paper feeding section on an automatic stapler. The reciprocating movement of the eccentric disk is converted by the Cam Clutch into an intermittent feed motion, which drives the belt conveyor. Hence, stapling is timed to the intermittent feeding motion and load overrun is prevented by a brake. Stapling is done at an exact pitch. This indexing can be applied extensively to food and other packaging machines.
SPEED AND SMALL FEED ANGLE (Feed frequency: N = 300 to 1,200 cycles/min.) (Feed angle: 0 = Up to 90°; N x 0 = 20,000 max) The example in Figure 16 shows a roll feeding device which is frequently used in high-speed automatic clamp presses. Driving power is taken from the eccentric disk provided at the end of the continuously rotating crankshaft, and this power drives the feed rolls intermittently through a Cam Clutch. The feed length can be changed quickly and easily for improved work efficiency. In order to attain high-speed, high-precision feeding, a cone brake with less torque fluctuation and a Cam Clutch for backstopping are used together.
Figure 16: Common roll feeding device utilizing indexing and backstop Cam Clutch
Figure 17: Automatic stapler indexing application
Typical Series
Advantage
For medium speeds (up to 300 cycles/min.) Excellent follow-up response at the time of engagement
MIUS
For low speed (up to 150 cycles/min.) Maintenance-free For low speeds (up to 100 cycles/min.) Same dimensions as #62 bearing
MZ, MZEU
BB
For low speeds (up to 150 cycles/min.) Sleeve-type outer race enables mounting of sprocket or gears as well as torque arms
PBUS
For medium speeds (up to 300 cycles/min.) Uses a special surface hardening cam to improve abrasion resistance
MI-S, MIUS-E, MIUS-K
For high speeds (up to 1,200 cycles/min.) Applicable also to low speeds
MX *
* Contact Tsubaki for more information.
www. ustsubaki .com
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