Headstock Threading Controls

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.

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

Using the controls on the lathe, follow along with the example below to better understand how to set up the lathe for the desired threading opera- tion.

Setting Metric Thread Pitch of 1.75

1.make sure the end gears are in the standard configuration, which is used for all metric threading (refer to End Gears on Page 55 for detailed instructions).

2.Locate the line in the metric thread chart that lists the setting for 1.75 thread pitch, as illus- trated in Figure 79.

	mm
				C
.2	LT1Z	1.2	LR6Z	6.5	HS7Y
.225	LT2Z	1.25	LS3Y	7	HS8Y
.25	LT3Z	1.3	LR7Y	8	HR1Y
.3	LT6Z	1.4	LR8Z	9	HR2Y
.35	LT8Z	1.5	LS6Y	10	HR3Y
.4	LS1Z	1.75	LS8Y	11	HR4Y
.45	LS2Z	2.0	LR1Y	12	HR6Y
.5	LS3Z	2.5	LR3Y	13	HR7Y

Figure 79. Metric thread chart with 1.75 TPmm

highlighted.

3.The configuration string of characters to the right of the selected thread pitch (LS8Y) displays the positions to set the threading controls for a metric thread pitch of 1.75 (see Figure 79).

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 controls as follows:

Note: Each of the thread charts has a C or V in the header that is to be used for all of the listings in that chart. For the C, use the left quick-change gearbox lever, and for the V use the right.

Grizzly G0740 owner manual Headstock Threading Controls

Models: G0740

Threading