Southbend SB1059F Manuale Utente

Pagina di 140
For Machines Mfg. Since 3/11
EVS Toolroom Lathe w/DRO
-59-
O P E R A T I O N
4.
  Loosen the pivot arm hex nut shown in 
Figure 76, then swing the pivot arm to the 
left so that the 44T/56T gears are away from 
the 57T gear. Hand tighten the hex nut to 
keep the arm in place.
As you remove and replace end gears, use 
a stiff brush and mineral spirits to clean 
away the debris and grime from them, then 
re-lubricate them as instructed in End Gears 
on Page 74.
5.
  Making sure to keep the shaft key firmly 
seated, remove the spacer and the 57T gear, 
then re-install them as follows:
— For the standard end gear configuration, 
slide the 57T gear on first, then the spacer 
on the outside.
— For the alternate end gear configuration, 
slide the spacer on first, then the gear.
6.
  Re-install the cap screw, lock washer, and 
flat washer you removed in Step 3 to secure 
the spacer and 57T gear. Do not overtighten.
7.
 
Slide the pivot arm back so that either the 
44T or the 56T meshes with the 57T gear, 
then retighten the pivot arm hex nut.
Note: 
Make sure to keep approximately 0.002" 
play between the gears.
8.
  Replace and secure the end gear cover before 
re-connecting the lathe to power.
The following subsections describe how to use 
the threading controls and charts on this lathe. 
If you are unfamiliar with the process of cutting 
threads on a lathe, we strongly recommend that 
you read books, review industry trade magazines, 
or get formal training before doing any threading 
projects.
Headstock & Gearbox Threading 
Controls
The threading charts on the headstock face 
display the settings for metric and inch 
threading, and modular and diametral pitches.
For inch or metric threads, use the standard end 
gear configuration. For modular or diametral 
pitches, use the alternate configuration
Use the controls on the lathe and follow along 
with the example below to better understand 
how to set up the lathe for the desired threading 
operation.
Example: Metric Thread Pitch of 2.5mm
1.
  Make sure the end gears are in the standard 
configuration, which is used for all metric 
threading (refer to End Gears on Page 58 
for detailed instructions).
2. 
Locate the line in the metric thread chart 
that lists the setting for 2.5mm threads, as 
illustrated in Figure 77.
Threading Controls
Figure 77. Metric thread chart.
Metric Thread
Width of 2.5mm