Southbend SB1059F owner manual Setting Power Feed Rate, Example Power Feed Rate of 0.0025/rev

For Machines Mfg. Since 3/11 O P E R A T I O N EVS Toolroom Lathe w/DRO

Setting Power Feed Rate

The power feed rate chart displays the settings for the headstock feed controls for metric and inch feed rates (see Figure 72).

Feed Rate

Chart

Figure 72. Power feed rate chart.

Using the controls on the lathe, follow along with the example below to better understand how to set the lathe for the desired power feed rate.

Example: Power Feed Rate of 0.0025"/rev

1.Make sure the end gears are in the standard configuration, which is applicable for general feed operations (refer to End Gears on the Page 58 for detailed instructions).

2.Locate the line in the feed rate chart that lists the setting for 0.0025" of feed per revolution of the spindle, as illustrated in Figure 73.

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 power feed rate of 0.0025"/rev., use the configuration string of characters to the left of the selected feed rate (LCT7Y) to configure the controls as follows:

L Move the gearbox range lever on the headstock up to the low position.

C Point the left gearbox lever to “C”.

T Point the middle gearbox lever to “T”.

7Position the bottom gearbox lever in slot “7”.

YPoint the right gearbox lever to “Y”.

The lathe is now set up for a power feed rate of 0.0025" per spindle revolution.

When using power feed to move the cross slide, the feed rate is 1⁄2 the value stated in the feed rate chart.

Feed Rate of

0.0025"/rev.

Requires a

Configuration of

LCT7Y

Figure 73. Feed rate chart.

-57-