1. engineering

Mill belt drive conversion

My photo-log of converting my Sieg X2 mini-mill from gear driven to a belt drive.

Full written log can be found here:- http://madmodder.net/index.php?topic=1245.0
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  • Blank for the large pulley<br />
Marking out and then cutting by hand a 3" round Ali bar, Took me 20-30 mins. <br />
<br />
I gotta get a bandsaw!!

    Blank for the large pulley
    Marking out and then cutting by hand a 3" round Ali bar, Took me 20-30 mins.

    I gotta get a bandsaw!!

    7009

  • Method of making sure the rough-cut 3" blank is gripped paralell to the lathe ways, in order to face each rough-cut end smooth and true.

    Method of making sure the rough-cut 3" blank is gripped paralell to the lathe ways, in order to face each rough-cut end smooth and true.

    7010

  • Turning the smaller section of the Large pulley

    Turning the smaller section of the Large pulley

    7014

  • Center drilling the bore

    Center drilling the bore

    7022

  • After drilling the bore out to 1/2", I set up the boring bar to just reach through

    After drilling the bore out to 1/2", I set up the boring bar to just reach through

    7024

  • Milling out some of the "meat" for the key way

    Milling out some of the "meat" for the key way

    7025

  • Cutting out some more waste of the key

    Cutting out some more waste of the key

    7026

  • Turning the outer diameters of the 2 V's

    Turning the outer diameters of the 2 V's

    7028

  • Filing the key way

    Filing the key way

    7029

  • Plunge cutting the V shape with a custom ground Hss tool

    Plunge cutting the V shape with a custom ground Hss tool

    7031

  • The custom ground V shaped Hss tool

    The custom ground V shaped Hss tool

    7035

  • The custom ground V shaped Hss tool

    The custom ground V shaped Hss tool

    7036

  • The custom ground V shaped Hss tool

    The custom ground V shaped Hss tool

    7037

  • The large pulley with both V sections completed

    The large pulley with both V sections completed

    7038

  • The large pulley with both V sections completed

    The large pulley with both V sections completed

    7039

  • Setup for milling the spindle-locking slot

    Setup for milling the spindle-locking slot

    7043

  • Setup for milling the spindle-locking slot

    Setup for milling the spindle-locking slot

    7044

  • The spindle-locking slot milled

    The spindle-locking slot milled

    7045

  • The small pulley for fitting to the motor, I've just formed the larger of the 2 V sections.

    The small pulley for fitting to the motor, I've just formed the larger of the 2 V sections.

    7046

  • The base with just the main pulley and fixing holes bored. The base is made out of 4" x 1/2" ali plate.

    The base with just the main pulley and fixing holes bored. The base is made out of 4" x 1/2" ali plate.

    7116

  • The motor pulley completed

    The motor pulley completed

    7119

  • Milling out one of the "ears"

    Milling out one of the "ears"

    7120

  • Where the "ear" will fit

    Where the "ear" will fit

    7122

  • Milling out the othe "ear"

    Milling out the othe "ear"

    7124

  • Ears mounted onto the base

    Ears mounted onto the base

    7125

  • Ears mounted onto the base (underside view)

    Ears mounted onto the base (underside view)

    7126

  • Marking out positions of the motor mounting holes and pivot holes on the motor mount ( a piece of 1/2" x 4" x 5.5" ali plate )

    Marking out positions of the motor mounting holes and pivot holes on the motor mount ( a piece of 1/2" x 4" x 5.5" ali plate )

    7127

  • Boring out the hole for the pulley on the motor mount

    Boring out the hole for the pulley on the motor mount

    7130

  • The chamfer turned on the motor mount

    The chamfer turned on the motor mount

    7131

  • Making the brass bush for the pivot pin, drilling it 6mm

    Making the brass bush for the pivot pin, drilling it 6mm

    7133

  • Using a grub screw the wrong way up in the base to mark out for the curved slot on the motor-mount.

    Using a grub screw the wrong way up in the base to mark out for the curved slot on the motor-mount.

    7135

  • Chain drilling the bulk of the curved slot

    Chain drilling the bulk of the curved slot

    7136

  • Holding the motor-mount with a F-Wrench to rotate it to smooth the slot with a 6mm slotting mill while keeping my fingers out of trouble

    Holding the motor-mount with a F-Wrench to rotate it to smooth the slot with a 6mm slotting mill while keeping my fingers out of trouble

    7137

  • Holding the motor-mount with a F-Wrench to rotate it to smooth the slot with a 6mm slotting mill while keeping my fingers out of trouble

    Holding the motor-mount with a F-Wrench to rotate it to smooth the slot with a 6mm slotting mill while keeping my fingers out of trouble

    7138

  • Milling down the motor mount for more clearance for the belt

    Milling down the motor mount for more clearance for the belt

    7139

  • Drilling and then tapping for the grubscrew on the large pulley

    Drilling and then tapping for the grubscrew on the large pulley

    7140

  • setup for drilling / tapping the smaller pulley for the grubscrew

    setup for drilling / tapping the smaller pulley for the grubscrew

    7141

  • the 2 pulleys completed

    the 2 pulleys completed

    7143

  • tapping the tension adjustment know

    tapping the tension adjustment know

    7216

  • Knurled knob for adjusting the belt tension

    Knurled knob for adjusting the belt tension

    7217

  • The setup for drilling the hole for the spring loaded spindle locking pin.

    The setup for drilling the hole for the spring loaded spindle locking pin.

    7219

  • Turning the spindle locking pin out of steel

    Turning the spindle locking pin out of steel

    7220

  • The completed spindle locking pin mounted on the base

    The completed spindle locking pin mounted on the base

    7222

  • Showing the completed spindle locking pin mounted on the base

    Showing the completed spindle locking pin mounted on the base

    7224

  • The completed spindle locking pin mounted on the base

    The completed spindle locking pin mounted on the base

    7225

  • The completed mini-mill belt drive conversion

    The completed mini-mill belt drive conversion

    7226

  • The completed mini-mill belt drive conversion, all taken apart

    The completed mini-mill belt drive conversion, all taken apart

    7227

  • The spring loaded locking pin mechinism taken apart

    The spring loaded locking pin mechinism taken apart

    7228

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