Grizzly G9249 owner manual Setting Feed Rate, Recommended Feed Rates, To set the feed rate

Page 39

Setting Feed Rate

Feed rate is determined by the machined material, the type of tooling used, and by the desired finish. Refer the table in Figure 52 or the Machinery's Handbook for guidelines.

Note: These instructions are valid only for feed rod power feed. Feed rate configuration for thread- ing is discussed in the Threading subsection starting on Page 40.

Recommended Feed Rates

 

Idda;ZZYGViZ>EG

Ldg`BViZg^Va

Rough Cuts

Finish Cuts

BV\cZh^jb

%#%&*¶%#%'*

%#%%*¶%#%&%

6ajb^cjb

%#%&*¶%#%'*

%#%%*¶%#%&%

7gVhh7gdcoZ

%#%&*¶%#%'*

%#%%(¶%#%&%

8deeZg

%#%&%¶%#%'%

%#%%)¶%#%%-

8Vhi>gdcHd[i

%#%&*¶%#%'*

%#%%*¶%#%&%

8Vhi>gdc=VgY

%#%&%¶%#%'%

%#%%(¶%#%&%

B^aYHiZZa

%#%&%¶%#%'%

%#%%(¶%#%&%

8VhiHiZZa

%#%&%¶%#%'%

%#%%(¶%#%&%

6aadnHiZZah=VgY

%#%&%¶%#%'%

%#%%(¶%#%&%

IddaHiZZa

%#%&%¶%#%'%

%#%%(¶%#%&%

HiV^caZhhHiZZa

%#%&%¶%#%'%

%#%%(¶%#%&%

I^iVc^jb

%#%&%¶%#%'%

%#%%(¶%#%&%

=^BV\VcZhZHiZZa

%#%&%¶%#%'%

%#%%(¶%#%&%

Note: These values are a guideline only. Refer to the MACHINERY’S HANDBOOK for more detailed information.

Figure 52. Feed rate table .

To set the feed rate:

1.Use the spindle direction lever to turn the spindle OFF, then allow the spindle to com- pletely stop before making gear changes.

2.Make sure the change gears are in the con- figuration 40T/127T/40T, as illustrated in

Figure 53 (refer to Change Gears on Page 38 for detailed instructions).

Note: The Model G9249 ships with the change gears in the 40T/127T/40T configu- ration, which will cover most feed rates and inch threading.

G9249  12" x 37" Belt Drive Gap Bed Lathe

3.Refer to the table in Figure 53 and find the value closest to your desired feed rate either in millimeters per revolution (top values) or in inches per revolution (bottom values).

Note: This table is also on the bottom of the label to the left of the feed rate selectors.

FEEDING TABLE mm/inch

401 2 3 4 5 6 7 8

127

D

.42

.37

.35

.33

.30

.28

.26

.24

.0165

.0146

.0138

.0131

.0120

.0110

.0101

.0094

40

E

.210

.185

.175

.165

.150

.140

.130

.120

 

 

.0082

.0073

.0069

.0065

.0060

.0055

.0050

.0047

Figure 53. Feed rate table.

4.Pull the knob of the feed rate selector and rotate it down. Line up the selector with the desired indent, rotate the selector up, and allow the pin to engage into the indent (see

Figure 54).

Note: It may be necessary to jog the spindle to facilitate movement of the selectors.

Letter Indents

 

Number Indents

 

 

 

Figure 54. Feed rate selectors.

For Example: The operation is a shallow finish cut on an aluminum workpiece. The chart in Figure 52 recommends a feed rate of 0.005–0.100 IPR (inches per revolution). Because this is a shallow cut, we could select a feed rate of 0.0082 IPR. To set this feed rate, seat the left feed rate selector in the "E" indent, and the right selector in the "1" indent.

-37-

Page 38 Page 40
Image 39
Page 38 Page 40
Contents Model G9249 Ss ,EAD from Leadbased PAINTS Table of Contents Introduction Foreword Functional OverviewContact Info Identification Machine Data Sheet Tailstock Info Other Specifications  !,7!93 53%3 %!2.2 02/4%#4/ %. /0%2!4.! -!#.%29  !,7!93 53% !.3 !002/6%$$ 3!&%49 ,!33%33 7%. /0%2!4 !,7!93 ,/#+ -/,% !3%3 & 53%$ % %&/2% /0%2!4. -!#.%29#  53%3!!2/5.$%$ %84%.3/..#/2$ 2!4%$4&/2/4%-!#.%!-0%2!%2 53%3 2%#/--%.$%$- !##%33/2%3  -!.9 -!#.%3 #!. %*%#4 7/2+0%#%3 4/7!2$ /0%2!4/2Additional Safety Instructions For Metal Lathes 220V Operation Circuit RequirementsUnpacking SetupSetup Safety Items Needed for SetupBox 1 Inventory Figure Qty InventoryBox 2 Inventory Figure Qty Left Cabinet Stand Clean UpFloor Load Lathe Assembly PlacementPlacement Location Site ConsiderationsLoosening the carriage lock bolt Using Machine Mounts Mounting to Shop FloorBolting to Concrete Floors Lubrication subsection on Check Gearbox OilTest Run To test run the machineMERGENCYG3TOP Utton Recommended Adjustments Factory adjustments that should be verifiedSpindle Break-In Headstock Controls Operation SafetyOperations Basic ControlsTailstock Controls Carriage ControlsChuck & Faceplate Mounting/Removal Tools Needed QtyTo remove a chuck or faceplate Mounting a Chuck or Faceplate Mounting a WorkpieceUsing the 3-Jaw Chuck To remove and install the jawsTo mount a workpiece in the 3-jaw chuck To mount a workpiece on the 4-jaw chuck Using the 4-Jaw ChuckTo mount a workpiece on the faceplate Using the FaceplateInstalling a Sleeve and Center into the Spindle CentersInstalling a Tapered Tool into the Quill TailstockRemoving a Sleeve and Center from the Spindle To align the tailstock with the headstock Offsetting TailstockTo set up the tailstock to cut a shallow taper Aligning TailstockStep To set up the tailstock for drilling Drilling with TailstockTo remove a tapered drill arbor or drill bit Steady Rest To install and use the steady restFollow Rest Cross SlideHandwheel Dial Increments To load and use the 4-way tool post Compound SlideTool Posts To set the compound slide angleConfiguring the V-Belts and Back Gear Spindle SpeedCalculating the Correct Spindle RPM To disengage the back gears To engage the back gearsPower Feed Setting Feed Rate Recommended Feed RatesTo set the feed rate Change Gears To re-configure the change gearsChange gear. G9249 12 x 37 Belt Drive Gap Bed Lathe Side Front ViewTo cut threads Threading OperationEdhidc H3022-Measurement Tool Set AccessoriesH2670-HSS Square Tool Bits Pc. Carbide Tipped Tool Bit SetsH5936-2 Pc. Knurling Tool Set H2996-Double Ended Boring BarG1070-MT3 Live Center Set H6879-Lathe Operation & Maintenance BookMaintenance Cleaning ProtectingSchedule To add oil to the spindle bearing reservoirs LubricationSpindle Bearing Oil Lubricant Frequency QtyHeadstock Spindle Pulley Shaft Headstock Change GearsHeadstock Idler Pulley Shaft Headstock GearsFeed Rate Gears Apron GearboxTo lubricate the feed rate gears Back Gear Shaft Ball OilersReplacing Motor V-Belt Adjusting Motor V-BeltTo adjust the motor V-belt tension Tensioning Replacing V-BeltsSpindle V-Belt Power Twist V-Belt G9249 12 x 37 Belt Drive Gap Bed LatheService TroubleshootingMotor & Electrical Faceplate Operations Adjusting Gibs To adjust the saddle gibTo adjust the cross slide and compound slide gibs Cross Slide Backlash To adjust the tailstock lockTo adjust the cross slide backlash Tailstock LockSpindle Bearing Preload Gap RemovalDisconnect Lathe from Power To confirm that the bearings are correctly pre- loaded Type of Finger Tip Part Number To remove/install the rest fingersTo remove/install the brass tips Rest Finger TipsTo adjust the half-nut guide bar Adjusting Half-NutElectrical Safety Instructions WiringMotor Wiring OverviewDiagram on Control PanelElectrical Cabinet Wiring Diagram Box Control Panel & Motor Wiring DiagramsBed PartsHeadstock Figured Flat NUT M8-1.25 Headstock Parts ListBushing Feed Rate Gearbox Feed Rate Gearbox Parts List Apron Apron Parts List + + Carriage Parts List #* #+ Spindle Lever Change Gear Cover Complete Steady Rest Complete Follow Rest Electrical Cabinet Electrical Cabinet Parts List Cabinet Stand Accessories Label Placement 22!.49 #!2$ 99.$5342!, .# 0//88 %,,.!- 7!  Warranty and Returns #ALL 4ODAYD&ORO! &2%%
Top Page Image Contents