Southbend SB10146PF owner manual Apron Controls, Disengaged

Turn-Nado®Gearhead Lathes O P E R A T I O N For Machines Mfg. Since 3/11

Note: In the next step, use the chuck key to rock the spindle back and forth to help mesh the gears as you make adjustments.

3.For a metric thread pitch of 2.5mm, use the configuration string of characters to the right of the selected thread pitch (LCR3Z) to position the threading controls as follows:

L Move the gearbox range lever to the low position.

C Point the left gearbox lever to the C.

R Point the middle gearbox lever to the R.

3Position the bottom gearbox lever in the 3 slot.

ZPoint the right gearbox lever to Z.

The lathe is now setup to cut a 2.5mm thread pitch.

Half Nut

Lever

Feed ON/OFF

Lever

Figure 78. Carriage controls.

Apron Controls

The half nut lever engages the apron with the leadscrew which moves the carriage and cutting tool along the length of the workpiece for threading operations (see Figures 78–79).

Important: Make sure the feed control lever is in the disengaged (middle) position before attempting to engage the half nut.

Feed ON/OFF

Lever

Disengaged

Engaged

Half Nut Lever

and Half Nut

Disengaged

Engaged

Attempting to engage the half nut while the cross slide or carriage is engaged with the feed rod could cause severe damage to the lathe. Never attempt to engage the half nut while the feed control lever is engaged.

Figure 79. Feed ON/OFF lever and half nut positions

for threading.

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