sploo
Somewhat extinguished member
I've recently acquired one of the many Sieg SX2.7L clones. Unlike my mini mill, the left side of the table has no handwheel but instead has a slot on the end of the leadscrew for an optional power feed. The official power feed is over £300, but I have various "bits" I've collected over the years for other projects, so...
I turned a ring to mount a 24V 6000rpm brushed motor, and milled a slot in the shaft to interface with an Oldham style coupling:
The ring got a few more tapped holes, and the motor was mounted on an MCP-4 25:1 reduction gearbox (obtain used on eBay about 20 years ago ):
With the end of the table removed, the slot on the leadscrew can be seen:
I machined a plate to help interface the gearbox to the end of the table, and also a shaft that slots into the hollow axle in the gearbox:
Later a knob was added to the end of the shaft to make it easier to slide. Note the slot in the shaft, that will line up with the hole in the gearbox's hollow axle:
The end of the table got two new holes drilled and counterbored, and those holes were used to mount two tapped lengths of steel rod:
Rods and plate mounted to the table:
Gearbox and motor mounted to the plate. Note how a bolt through the hollow axle captures the shaft, and allows easy engagement/disengagement of the power feed:
Next a 3D printed cover was added to protect the "clutch" from chips:
Final shot of the mounted power feed:
Next it was on to the control box for the motor...
I turned a ring to mount a 24V 6000rpm brushed motor, and milled a slot in the shaft to interface with an Oldham style coupling:
The ring got a few more tapped holes, and the motor was mounted on an MCP-4 25:1 reduction gearbox (obtain used on eBay about 20 years ago ):
With the end of the table removed, the slot on the leadscrew can be seen:
I machined a plate to help interface the gearbox to the end of the table, and also a shaft that slots into the hollow axle in the gearbox:
Later a knob was added to the end of the shaft to make it easier to slide. Note the slot in the shaft, that will line up with the hole in the gearbox's hollow axle:
The end of the table got two new holes drilled and counterbored, and those holes were used to mount two tapped lengths of steel rod:
Rods and plate mounted to the table:
Gearbox and motor mounted to the plate. Note how a bolt through the hollow axle captures the shaft, and allows easy engagement/disengagement of the power feed:
Next a 3D printed cover was added to protect the "clutch" from chips:
Final shot of the mounted power feed:
Next it was on to the control box for the motor...