Grizzly MODEL G0765 owner manual Apron Threading Controls, Thread Dial Chart

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Apron Threading Controls

The half nut lever engages the carriage with the leadscrew, which moves the carriage and cutting tool along the length of the workpiece for thread- ing operations (see Figure 65).

Half Nut

 

Thread Dial

Lever

 

 

 

 

 

Disengaged

Halfnut

Lever

Engaged

Figure 65. Apron threading controls.

Thread Dial

The numbers on the thread dial (Figure 65) are used with the thread dial chart to show when to engage the half nut during inch threading.

Note: The thread dial is not used for metric threading. You must leave the half nut engaged from the beginning until the turning is complete for this type of operation.

When threading, we recommend using the slowest speed possible and avoiding deep cuts, so you are able to disengage the half nut when required to prevent a carriage crash!

When the first cutting pass is complete, the opera- tor disengages the carriage from the leadscrew using the half nut lever. The operator returns the carriage for the next pass and re-engages the half nut using the same thread dial setting to resume the cut in the previous pass.

Model G0765 (Mfd. Since 12/13)

Thread Dial Chart

The thread dial chart is located on the headstock, as shown in Figure 66.

Thread Dial

Chart

Figure 66. Thread dial chart location.

Find the TPI (threads per inch) that you want to cut on the thread dial chart (see Figure 67), then reference the scale number to the right. The scale numbers indicate when to engage the half nut for a specific thread pitch as indicated by the thread dial.

Thread Dial Chart

TPI

Scale

TPI

Scale

 

 

 

 

12

1,3,5,7

26

1,5

 

 

 

 

13

1

28

1,3,5,7

 

 

 

 

14

1,5

32

1 – 8

 

 

 

 

16

1 – 8

36

1,3,5,7

 

 

 

 

18

1,5

38

1,5

 

 

 

 

19

1

40

1 – 8

 

 

 

 

20

1,3,5,7

44

1,3,5,7

 

 

 

 

22

1,5

48

1 – 8

 

 

 

 

24

1 – 8

52

1,3,5,7

 

 

 

 

 

 

 

 

Figure 67. Thread dial chart.

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Contents Model G0765 14 Benchtop Lathe Page Table of Contents Control Panel Wiring ServiceMachine Description Manual Accuracy IntroductionContact Info Identification Control Panel Controls ComponentsCarriage End Gears Tailstock Rear ControlsMachine Data Sheet Tailstock Info Features Safety Instructions for Machinery SafetyPage Additional Safety for Metal Lathes Additional Chuck Safety Availability Power SupplyFull-Load Current Rating 110V Circuit RequirementsExtension Cords Grounding & Plug RequirementsMinimum Gauge Size 14 AWG 50 ftNeeded for Setup SetupPreparation UnpackingInventory Installed Components Figure QtyPackaged Components Figures Qty Before cleaning, gather the following CleanupBasic steps for removing rust preventative Site Considerations Power Connection AssemblyConnecting Power Disconnecting PowerTest Run Disengaged Factory adjustments that should be verified Recommended AdjustmentsSpindle Break-In Operation Overview OperationsChuck & Faceplate Mounting Installation Removal DeviceTo install the chuck Chuck InstallationTools Needed Qty Changing Jaw Set Scroll Chuck ClampingTo change the jaw set To mount a non-concentric workpiece to the faceplate FaceplateTailstock Using QuillTailstock Quill Specs Positioning TailstockOffsetting Tailstock Installing ToolingTo install tooling in the tailstock Removing ToolingTo offset the tailstock Aligning Tailstock to Spindle CenterlineItems Needed Qty To align the tailstock to the spindle centerlinePage Dead Centers CentersMounting Dead Center in Spindle Removing Center from SpindleRemoving Center from Tailstock Mounting Center in TailstockMounting Workpiece Between Centers To mount a center in the tailstockTo install and use the steady rest Tools Needed for Installation/Removal QtySteady Rest Compound Rest Four-Way Tool Post Installing ToolBelow are two common methods Aligning Cutting Tool with Spindle CenterlineTo align cutting tool with tailstock center Top ViewSpindle Speed Manual FeedSetting Spindle Direction & Speed Setting Spindle Speed RangeConfiguration Example To set spindle speed to 100 RPMPower Feed Controls Power FeedTo set power feed for 0.04 in./rev Setting Power Feed RatePower Feed Configuration Primary Threading ConfigurationSecondary Threading Configuration End GearsTo configure end gears for threading 20 TPI End Gear Configuration Example40T 65T Gear 50 T Ge ar 20 TPI Page Headstock Threading Controls ThreadingTo set the lathe to thread 20 TPI Feed Direction LeverApron Threading Controls Thread Dial ChartThread Dial Dial Number Thread Dial D3640-Shop Fox Tool Table Plus AccessoriesCleaning/Protecting MaintenanceSchedule Lubrication Frequency LubricationBall Oilers Bedways Leadscrew & Carriage RackCross Slide & Compound Slide Change Gear Bushing Machine StorageTumbler Gears Preparing Lathe for StorageTroubleshooting ServiceSymptom Possible Cause Possible Solution Lathe Operation Leadscrew End-Play Adjustment Backlash AdjustmentCross Slide To remove leadscrew end playTo adjust cross slide and compound slide gibs Gib AdjustmentFuse Replacement Half Nut AdjustmentTo adjust half nut To replace fuseTo replace motor brushes Brush ReplacementTensioning Timing Belt Timing Belt Tension ReplacementReplacing Timing Belt Wiring Safety Instructions WiringMachine Frame Control Panel WiringG0765 wiring overview Control Panel Wiring Photos110 VAC Motor/Speed Sensor/ Plug WiringMain Description Description 255 254 256 257 259 258 253 252 261 251 260 Labels & Cosmetics FrontAppendix Threading ChartsComments Warranty CardBOX BELLINGHAM, WA Grizzly INDUSTRIAL, INCWarranty & Returns