Instruction manual

Shuttle Frame Assembly
243
Shuttle Frame Assembly
The central element of the printing mechanism is the shuttle frame assembly,
which houses the hammer bank assembly and the shuttle drive motor. (See
Figure 48.)
Figure 48. Shuttle Frame Assembly
Hammer Bank Assembly
The hammer springs are grouped in comb-like assemblies mounted on a solid
hammer bank. Both the number of hammer springs per hammer spring
assembly and the number of hammer spring assemblies on the hammer bank
vary according to printer model:
• P5X05, P5X05A, and P5X05B printers have seven 4-hammer
assemblies, for a total of 28 hammer springs.
• P5X08, P5X09 printers have seven 7-hammer assemblies, for a total of
49 hammer springs.
• P5X10 printers have six 10-hammer assemblies, for a total of 60 hammer
springs.
• P5212, P5214, and P5XKA printers have seven 13-hammer assemblies,
for a total of 91 hammer springs.
• P5X15 printers have six 17-hammer assemblies, for a total of 102
hammer springs.
Shuttle Drive Motor
The shuttle drive motor is built into the shuttle assembly casting and drives
two connecting rods on a crankshaft. The small end of one connecting rod
attaches to the hammer bank; the small end of the other connecting rod
attaches to a counterweight frame surrounding the hammer bank. (The
hammer bank and the counterweight constitute the shuttle assembly.) The
rotary motion of the shuttle drive motor converts to linear and opposing
motion of the hammer bank assembly and counterweight, in an arrangement
Shuttle Frame
Assembly
Hammer Bank Assembly
Counterweight Assembly
Connecting Rod
Guide Shaft
Shuttle
Motor