Manuals / Southbend / Power Tools / Lathe

Southbend SB Apron Threading Controls, Thread Dial, Cross Slide, Disengaged, O P E R A T I O N

Models: SB

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Apron Threading Controls

	O P E R A T I O N
For Machines Mfg. Since 5/11	O P E R A T I O N	13" Heavy 13® Gearhead Lathe

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 threading operations (see Figure 77).

Important: Make sure the feed selection lever is in the disengaged (middle) position before attempting to engage the half nut.

Half Nut

Feed ControlLever Lever

Thread Dial

The numbers on the thread dial are used with the thread dial chart to show when to engage the half nut during inch threading. The thread dial gear must be engaged with the leadscrew for this to work. Loosen the knurled knob on the thread dial, pivot the dial gear toward the leadscrew

so that it properly meshes with the leadscrew threads, then re-tighten the knob, as shown Figure 78.

Leadscrew

Dial Gear

Knurled

Knob

Cross Slide

Disengaged

Carriage

Feed Control

Lever

Disengaged

Halfnut

Lever

Engaged

Figure 78. Thread dial engaged with the leadscrew.

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

Figure 77. Apron threading controls.

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Image 59

Southbend SB Apron Threading Controls, Thread Dial, Cross Slide, Disengaged, Halfnut Lever Engaged, O P E R A T I O N

Contents

January, 2012 by South Bend Lathe Co 13 HEAVY 13 GEARHEAD LATHEMODEL SB1049 13 X MODEL SB1050 13 X OWNERS MANUALManual Feedback UpdatesCustomer Service Scope of ManualPREPARATION Table of ContentsSAFETY INTRODUCTIONTROUBLESHOOTING ACCESSORIESMAINTENANCE SERVICECapabilities FeaturesAbout This Machine ForewordGeneral Identiﬁcation I N T R O D U C T I O N Master Power SwitchControls Components HeadstockI N T R O D U C T I O N Control PanelCarriage I N T R O D U C T I O N Safety Foot BrakeTailstock End GearsSB1050 MODEL SB1049 & SB1050 13 HEAVY 13 GEARHEAD LATHESModel Number SB1049SB1050 I N T R O D U C T I O NModel Number SB1049SB1049 DimensionsI N T R O D U C T I O N Model NumberSB1050 I N T R O D U C T I O NModel Number SB1049S A F E T Y Basic Machine SafetyUnderstanding Risks of Machinery S A F E T Y S A F E T Y Additional Metal Lathe SafetyS A F E T Y Additional Chuck SafetyPreparation Overview For Power ConnectionPower Supply Requirements on the next page for details For Cleaning & AssemblyAvailability Power Supply RequirementsSingle-Phase S Type, 3-Wire, 12 AWG, 300 VACGROUNDED L6-30 LOCKING RECEPTACLE Grounding Prong is Hooked L6-30 Grounding RequirementsExtension Cords P R E P A R A T I O NMain Inventory 1 Figure Pre-Installed Not ShownUnpacking InventoryP R E P A R A T I O N Cleaning & ProtectingBefore cleaning, gather the following Basic steps for removing rust preventativePhysical Environment Electrical InstallationWeight Load LocationP R E P A R A T I O N Lifting & MovingTo lift and move the lathe P R E P A R A T I O N Leveling & MountingLeveling P R E P A R A T I O N AssemblyLubricating Lathe Bolting to Concrete FloorsTo Plug Power ConnectionTo connect the power cord to the lathe Adding CoolantP R E P A R A T I O N Test RunTo test run your machine Spindle Speed Feed Range LeverNeutral HighDisengaged Halfnut Lever to Brake & Switch on Page 78 to makeCarriage Feed Control LeverP R E P A R A T I O N To perform the spindle break-in Recommended AdjustmentsFactory adjustments that should be veriﬁed Spindle Break-InTo complete a typical operation, the operator does the following Operation OverviewO P E R A T I O N O P E R A T I O N Installation & Removal DevicesChuck & Faceplate Mounting O P E R A T I O N Chuck InstallationTo install the chuck INCORRECTO P E R A T I O N Chuck RemovalRegistration Marks To remove the chuckO P E R A T I O N Scroll Chuck Clamping4-Jaw Chuck Mounting WorkpieceFigure 36. Example photo of non-cylindrical workpiece FaceplateO P E R A T I O N Figure 35. 4-jaw tightening sequenceTo mount a non-concentric workpiece to the faceplate Using QuillTailstock Positioning TailstockO P E R A T I O N Installing ToolingTo install tooling in the tailstock Tools Needed Offsetting TailstockRemoving Tooling To offset the tailstockO P E R A T I O N Aligning Tailstock to Spindle CenterlineItems Needed To align the tailstock to the spindle centerlineO P E R A T I O N CentersDead Centers Mounting Center in Tailstock Live CentersMounting Dead Center in Spindle Removing Center from SpindleDrift Key Slot Figure 51. Drift key slot in the side of the quill Removing Center from TailstockMounting Workpiece Between Centers O P E R A T I O NO P E R A T I O N To install and use the steady restSteady Rest Cap Screws Figure 55% Follow rest attachment Follow RestCarriage & Slide Locks O P E R A T I O NFour-Way Tool Post Installing ToolTo install a tool in the tool post Compound RestTop View Aligning Cutting Tool with Spindle CenterlineTo align the cutting tool with the tailstock centerO P E R A T I O N Adjustable Feed StopMicrometer Stop To set the micrometer stopCross Slide Handwheel Manual FeedSpindle Speed Carriage HandwheelConﬁguration Examples Setting Spindle SpeedSetting Spindle Speed of 200 RPM 350 RPM or lower when using the high H gearbox range2000 RPM Power FeedSetting Spindle Speed of 2000 RPM to HIGHO P E R A T I O N Power Feed ControlsD. Quick-change Gearbox Feed Levers O P E R A T I O N Setting Power Feed RateSetting Power Feed Rate of 0.18mm/rev 18 LCS8W End GearsStandard End Gear Conﬁguration O P E R A T I O NTools Needed Alternate ConﬁgurationConﬁguring End Gears To conﬁgure the end gearsO P E R A T I O N Setting Metric Thread Pitch ofThreading Headstock Threading ControlsDisengaged Apron Threading ControlsThread Dial Cross SlideOdd Numbered TPI Thread Dial ChartTPI Divisible By Even TPI Not Divisible ByO P E R A T I O N Chip Drawer1⁄4 or 3⁄4 Fractional TPI 27⁄8 TPIO P E R A T I O N Coolant SystemTo use the coolant system on your lathe BIOLOGICAL & POISON HAZARDD1-5 Back Plates SB1397-61⁄4 SB1399-81⁄4 SB1401-101⁄2 AccessoriesA C C E S S O R I E S SB1279-10 Pc. Precision 5-C Collet SetSB1245-MT#2 Bull Nose Center Keyless Integral Chucks SB1379-MT #3 1⁄2 SB1380-MT #3 5⁄8SB1238-High Performance MT#3 Live Center ss 7ATERPROOF DESIGNA C C E S S O R I E S SB1365-Way OilSB1251-Machinists Oak Tool Box SB1282-High Performance MT#3 Live Center SetM A I N T E N A N C E Maintenance ScheduleAlways disconnect power performing maintenanceService Item South Bend Lathe Co. Lathe Monthly Maintenance ChartAnnual Service posal, and safetyChanging Oil LubricationChecking Oil Level Adding OilDraining Oil & Flushing Reservoir Quick-Change GearboxApron Draining OilDrain Plug Figure 104. Location of apron drain plug One-Shot OilerLongitudinal Leadscrew M A I N T E N A N C EEF Figure 107. Tailstock ball oilers Ball Oilers & Oil CupM A I N T E N A N C E A B C DM A I N T E N A N C E Handling & CareLubricating End GearsM A I N T E N A N C E Coolant System ServiceHazards for proper disposalTo change the coolant Adding FluidChanging Coolant Items NeededM A I N T E N A N C E Machine StorageTo prepare the lathe for storage S E R V I C E Backlash AdjustmentCompound Rest Cross SlideS E R V I C E Leadscrew End Play AdjustmentGib Adjustment To remove leadscrew end playS E R V I C E V-Belts Half Nut AdjustmentTo adjust the V-belts To adjust the half nutTools Needed Brake & SwitchTo adjust the brake and brake switch S E R V I C ES E R V I C E Figure 125. Brake belt adjustment componentsFigure 126. Brake pedal travel adjustment Brake Switch Pedal Cam Figure 127. Brake switch and pedal camTools Needed Leadscrew Shear Pin ReplacementTo replace the shear pin S E R V I C ERotate Washer Slot Figure 133. Shroud washer positioning Shear Pin Figure 132. New shear pin installed in boreS E R V I C E Inner Bore Outer Bore Figure 131. Shear pin bores alignedTools Needed Gap Insert Removal & InstallationGap Removal S E R V I C ES E R V I C E Gap InstallationMachinerys Handbook or a speeds and feeds SymptomPossible Solution Possible CausePage SymptomPossible Solution Possible CauseWorkpiece is SymptomPossible Solution Possible CauseWIRING DIAGRAM COLOR KEY Electrical Safety InstructionsE L E C T R I C A L Page Work Lamp Page Spindle Switches Page Wiring OverviewPower Supply Connection Chuck Guard Limit Switch Page Brake Pedal Micro Switch PageP age Component Location IndexE L E C T R I C A L P agePOWER Electrical Cabinet WiringTo Chuck Guard Micro Switch, Page To Power Supply Connection, PageFigure 138. Electrical box Electrical BoxE L E C T R I C A L Spindle Coolant Pump Motor WiringSpindle Motor E L E C T R I C A LE L E C T R I C A L Control Panel WiringSpindle Switches Figure 140. Spindle rotation switch locationMaster Power Switch Additional Component Wiring220VAC L6-30 Plug as recommended Power ConnectionTOP COVER GASKET Headstock CoverP A R T S CAP SCREW M6-1 XFor Machines Mfg. Since 5/11 HeadstockControls P A RP A R T S Headstock Controls Parts ListP A R T S Headstock Internal GearsCOMBO GEAR ASSEMBLY 45T/52T Headstock Internal Gears Parts ListCOMBO GEAR ASSEMBLY 22T/76T COMBO GEAR ASSEMBLY 30T/38TCOMBO GEAR ASSY 21T/42T Headstock Transfer GearsP A R T S STEEL FLUTED RIVET 2 X 5MMP A R T S GearsGearbox EXT RETAINING RING 22MM Gearbox Gears Parts ListP A R T S NEEDLE ROLLER BEARING TAF202820R T S Gearbox ControlsLOWER MIDDLE PARTITION SUPPORT Gearbox Controls Parts ListP A R T S P A R T S Apron Front ViewCOMPRESSION SPRING 4 X Apron Front View Parts ListP A R T S COMPRESSION SPRING 6 XP A R T S Apron Rear ViewNEEDLE ROLLER BEARING NK29/30 Apron Rear View Parts ListP A R T S THRUST BEARING NTB/AS-2542P A R T S Compound Rest & Tool PostP A R T S Saddle Top ViewTHRUST BEARING NTB/AS2-1730 Saddle Top View Parts ListP A R T S STRAIGHT ADAPTER 1/8 X 6MM Saddle Bottom ViewP A R T S STRAIGHT ADAPTER 1/8PT X 4MMP A R T S Dial IndicatorMicrometer Stop SB1050 Bed & ShaftsP A R T S LONGITUDINAL LEADSCREW SB1050 Bed & Shafts Parts ListP A R T S LONGITUDINAL LEADSCREW SB1049GEAR FLAT WASHER 8MM End GearsP A R T S GEAR FLAT WASHER 14MMP A R T S Main MotorPULLEY FLAT WASHER 10MM Main Motor Parts ListSIDE MOTOR ACCESS COVER P A R T SP A R T S Stands & PanelsBRAKE PEDAL ROD SB1050 Cabinets & Panels Parts ListP A R T S BRAKE PEDAL ROD SB1049P A R T S TailstockLOCK SHAFT FLAT WASHER 12MM Tailstock Parts ListP A R T S HANDLE CAP SCREW M8-1.25P A R T S Steady RestFollow Rest Electrical Cabinet Electrical Cabinet & Control PanelP A R T S 1551 AccessoriesP A R T S 1611 Front Machine LabelsP A R T S SB MODEL NUMBER LABEL SB1050 Rear & Side Machine LabelsP A R T S SB MODEL NUMBER LABEL SB1049Page W A R R A N T Y Warranty#TS14496 Printed In U.S.A