26
1) If the oscillating gear is not properly positioned, the machine may not operate.
2) If the backlash is excessive, the machine might cause increasing noises during operation. If the
backlash is too small, the machine might not operate.
Caution
6.3) Adjustment of Lower Shaft Gear and Oscillating Shaft
－ Loosen tightening screws ①, ②
－ Rotate the upper shaft and move the oscillating gear in the arrow direction to find the position where the gear
can smoothly operate without any load.
－ Attach the oscillating shaft collar (right) to the bed faceⒶ and fasten the collar screw②.
－ Turn the oscillating shaft collar (right) in the arrow direction, while it is closely attached to the bed face Ⓐ, to
find the place where the roll driver can smoothly rotate with the backlash of 0.1mm or below.
If the area near the shuttle upside spring’s groove is scratched or grows rough, it may cause thread
break and the separation of thread strands. To prevent it, check the status of the shuttle upside
spring.
Caution
6.4) Adjustment of Shuttle Upside Spring Position
－ Disassemble the lower feed plate and the needle plate in order to enable the adjustment of the shuttle upside spring.
－ Loosen the tightening screw for the front spring. Vertically move the needle to make its rear end contact the Ⓐ
area. Adjust the shuttle front spring to make the needle center contact Ⓑ in the middle. When adjustment
completes, fasten the tightening screw.
②
①
Tightening Screw
Tightening
Screw
Ⓐ
Oscillating Shaft Collar
(right)
Backlash: 0.1mm or below
To Next Page
Loading...
Need help?
General
