Grizzly g0749, g0746 Headstock Threading Controls, To set levers and dials for 16 TPI

Threading

The following subsections will describe how to use the threading controls and charts to set up the lathe for a threading operation. If you are unfamil- iar 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 attempting any threading projects.

Headstock Threading Controls

The threading charts on the headstock face dis- play the settings for inch and metric threading.

Using the controls on the lathe, follow the exam- ple below to understand how to set up the lathe for the desired threading operation.

To set levers and dials for 16 TPI:

1.Configure the gears, as instructed in the End Gear Configuration Example on Page 56.

2.Locate 16 TPI on the inch threading chart shown in Figure 86.

Lever & Dial Positions
G Dial	F Lever
	Position
Position
16 TPI
E Lever Position

Figure 86. 16 TPI and corresponding lever and

dial positions.

3.To the left of 16 TPI, locate the E lever in the 2 position. Above 16 TPI, locate the F lever position and the G dial position—which will be set to 1 (see Figure 86).

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.

4.Position the gearbox levers and dials, as shown in Figure 87.

F Lever				E Lever
Position				Position
G Dial
Position
				Selection
				Lever
mm			˶	3 2 1
		F		E
	Lever			Lever
		G
	1	1		Leadscrew (UP)
	1	2
1	0		3
9			4
	8		5
	7	6
		G		Feed Rod (DOWN)
	Dial			Selection Lever

Figure 87. Lever and dial settings for 16TPI.

5.Move the leadscrew feed rod selection lever up.

The lathe is now set up to cut 16 TPi threads.

Model G0746/G0749 (Mfg. Since 3/13) -57-