M1109 Combo Lathe/Mill

Setting Power Feed Rate

The carriage has longitudinal and cross slide power feed capabilities. All directions reverse when spindle rotation is reversed.

NOTICE

Feed rate is based on spindle RPM. High feed rates combined with high spindle speeds result in a rapidly moving carriage or cross slide. Pay close attention to the feed rate you have chosen and be ready to disengage the apron. Failure to do this may cause the carriage to crash into the chuck.

To set and engage the power feed, do these steps:

1.

DISCONNECT THE LATHE/MILL FROM POWER!

2.

Refer to the Change Gear Chart on Page 29, or

 

the chart on the inside of the change gear door to

 

determine the needed combination of gears and

 

which spindle location to install each gear on.

 

See Figure 39 for the gear installation locations on

 

the lathe that are referenced by the chart.

 

See Figure 40 for examples of how certain gear

 

combinations can achieve your needed longitudinal

 

and cross feed rates. For example: The chart shows

 

that 0.0089" of longitudinal travel per revolution of

 

lead screw is needed, or 0.0019" of cross travel per

 

revolution of lead screw is needed.

 

Note: All change gears are stamped with the num-

 

ber of teeth they have.

3.

Loosen the lash adjuster (Figure 39) and swing the

 

assembly out of the way.

4.

Remove the required E-clips, lubricate, and swap

 

out the appropriate change gears.

5.

Move the lash adjuster so the gear backlash is at

 

0.003" to 0.008", and tighten the lock nut.

M

NA

C

Lash

B

D

 

Adjuster

 

 

 

 

 

and

 

 

 

Lock

 

 

 

Nut

 

 

 

Figure 39. Change gear locations.

 

Inch

Longitudinal Cross

 

Threading

Feed

Feed

Figure 40. Using the change gear chart.

Leadscrew Lever

Apron

Lock

OPERATIONS

6. Use the leadscrew lever to select leadscrew rota-

tion direction (Figure 41).

Feed

Bolt

7. Loosen the apron lock bolt, and use the feed lever

(Figure 41) to engage the cross feed or longitudinal

feed.

-27-

Lever

Figure 41. Leadscrew and feed levers.

Page 29
Image 29
Woodstock M1109 owner manual Setting Power Feed Rate, Refer to the Change Gear Chart on Page 29, or