Grizzly G0755 owner manual Symptom Possible Cause Possible Solution

Page 38

Symptom

Possible Cause

Possible Solution

Tool loose in spindle.

1.

tool is not fully drawn up into

1.

tighten draw bar.

 

 

spindle taper.

 

 

 

2.

debris on tool or in spindle taper.

2.

Clean collet and spindle taper.

 

3.

taking too big of a cut.

3.

Lessen depth of cut and allow chips to clear.

 

 

 

 

 

Breaking tools or cutters.

1.

spindle speed/feed rate is too fast.

1.

set spindle speed correctly (Page 25) or use slower

 

 

 

 

feed rate.

 

2.

Cutting tool too small.

2.

use larger cutting tool and slower feed rate.

 

3.

Cutting tool getting too hot.

3.

use coolant fluid or oil for appropriate application.

 

4.

taking too big of a cut.

4.

decrease depth of cut.

 

5.

spindle extended too far down.

5.

Fully retract spindle and lower headstock. This

 

 

 

 

increases rigidity.

 

 

 

 

 

Workpiece vibrates or

1.

table locks not tight.

1.

tighten down table locks.

chatters during operation.

2.

Workpiece not secure.

2.

properly clamp workpiece on table or in vise.

 

3.

spindle speed/feed rate is too fast.

3.

set spindle speed correctly (Page 25) or use a

 

 

 

 

slower feed rate.

 

4.

spindle extended too far down.

4.

Fully retract spindle and lower headstock. This

 

 

 

 

increases rigidity.

 

 

 

 

 

Table is hard to move.

1.

table locks are tightened down.

1.

Make sure table locks are fully released.

 

2.

Chips have loaded up on ways.

2.

Frequently clean away chips that load up during

 

 

 

 

operations.

 

3.

Ways are dry and need lubrication.

3.

Lubricate ways (Page 32).

 

4.

table limit stops are interfering.

4.

Check to make sure that all table limit stops are not

 

 

 

 

in the way.

 

5.

gibs are too tight.

5.

Adjust gibs (see Page 37).

 

 

 

 

 

Bad surface finish.

1.

spindle speed/feed rate is too fast.

1.

set spindle speed correctly (Page 25) or use a

 

 

 

 

slower feed rate.

 

2.

using a dull or incorrect cutting tool.

2.

sharpen cutting tool or select one that better suits

 

 

 

 

the operation.

 

3.

Wrong rotation of cutting tool.

3.

Check for proper cutting rotation for cutting tool.

 

4.

Workpiece not secure.

4.

properly clamp workpiece on table or in vise.

 

5.

spindle extended too far down.

5.

Fully retract spindle and lower headstock. This

 

 

 

 

increases rigidity.

 

 

 

 

 

Cutting results not square.

1.

table and spindle are not at 90° to

1.

tram the spindle (Page 38).

 

 

each other.

 

 

 

 

 

 

 

-36-

Model G0755 (Mfg. Since 1/13)

Image 38
Contents Model G0755 Page Table of Contents Contact Info IntroductionMachine Description Manual Accuracy Identification Machine Data Sheet Table Info Safety Safety Instructions for MachineryPage Additional Safety for Mill/Drills Full-Load Current Rating Power SupplyAvailability Circuit Requirements forMinimum Gauge Size 14 AWG Grounding InstructionsExtension Cords 50 ftUnpackingInventory SetupNeeded for Setup Basic steps for removing rust preventative CleanupBefore cleaning, gather the following Site Considerations Lifting & Placing To move your machine into positionMachine Base Concrete Anchoring to Floor AssemblyAnchoring to Concrete Floors To join the drill chuck and arbor Joining Drill Chuck ArborLubricating Mill/Drill Test Run To test run the machineInspections Adjustments Spindle Break-InOperations Operation OverviewControl Panel Downfeed Controls Using Coarse DownfeedUsing Fine Downfeed IdentificationRaising/Lowering Headstock Depth StopHeadstock Movement Graduated Dials Table TravelTilting Headstock Axis Handwheels Axis Power FeedON/OFF Switch To install tool holder Installing/Removing ToolingInstalling Tool Holder Tool Needed QtyDetermining Spindle Speed Spindle SpeedRemoving Tool Holder Tools Needed QtySetting Spindle Speed Spindle Speed Range Lever Speed LeverAccessories ISO 68 and ISO 32 machine oilH7527-6 Rotary Table Set H7527 6 Rotary Table SetG5641-1-2-3 Blocks G9815-Parallel Set G9612-Test IndicatorG5774-R-8 End Mill Holder Set H5930-4-Pc Center Drill Set H5931-4-Pc Center Drill SetSchedule MaintenanceCleaning Protecting LubricationHeadstock Reservoir To change the headstock oilBall Oilers Table/Column Ways & Quill Table Leadscrews Quill Rack & PinionAxis Leadscrew Service TroubleshootingSymptom Possible Cause Possible Solution Adjusting Gibs Adjusting Leadscrew BacklashTramming Spindle To tram the spindle with the tableReplacing Power Feed Carbon Brushes To adjust the return spring tension Tightening Return Spring TensionWiring Wiring Safety InstructionsElectrical Box Wiring Control PanelMotors & Other Electrical Wiring Electrical Box Axis Motor Axis Limit SwitchElectrical Photos Control Panel Rear View Spindle MotorParts HeadHead Parts List DescriptionDescription Table & Column Table & Column Parts List Electrical Components 401 406 402 403 405 404 415 411 408 407 409 412 410 413 414Power Feed Accessories Machine Labels & Cosmetics Warranty Card CommentsGrizzly INDUSTRIAL, INC BOX BELLINGHAM, WAWarranty & Returns