Grizzly G1005Z Graduated Dials, Micro-Downfeed Handwheel, Backlash, To correct for backlash

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Graduated Dials

The handwheels and the micro-downfeed adjust- ment knob have graduated dials. Each mark represents 0.001" of movement and one full revo- lution of the micro-downfeed knob equals 0.100". The graduated dials float and can be indexed or "zeroed" using the knurled knob on the dial. One full revolution of the handwheel equals 0.100".

Micro-Downfeed

Handwheel

The micro-downfeed handwheel (Figure 13) is used when vertical milling accuracy is required. Each full rotation of the micro-downfeed handwheel is equal to 0.100".

Backlash

Backlash and graduated dials are somewhat interconnected. When you change direction of the table in either axis, you must correct the gradu- ated dial for backlash. Normal recommended backlash is less than 0.010".

Note: It is up to you to determine an acceptable amount of backlash for your system. The frictional wear on your lead screw increases as backlash is reduced. Attempting to completely eliminate backlash can place excessive wear on your lead screw and decrease its operational capability.

To correct for backlash:

1.Turn the handwheel and move the table the opposite direction of your next operation.

2.Turn the handwheel to move the table in the intended direction.

3.The exact moment the lead screw catches and the table begins to move, backlash has been eliminated and the graduated dial can be "zeroed."

Note: You will not need to adjust for back- lash as long as the table keeps moving in the same direction.

Figure 13. Pinion hub lock knob.

To engage the micro-downfeed handwheel, tight- en the pinion hub lock knob clockwise against the pinion hub.

To disengage the micro-downfeed handwheel, hold the downfeed handles and loosen the pinion hub lock knob counterclockwise.

G1005Z Mill/Drill

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Contents Model G1005Z MILL/DRILL Page Table of Contents Introduction ForewordContact Info Machine Data Sheet Lead Screw Info Identification Safety G1005Z Mill/Drill Additional Safety for Mill/Drills 110/220V Operation Circuit RequirementsAmperage Draw Circuit RequirementsExtension Cords Grounding110V Operation 220V OperationSet Up Safety SET UPItems Needed for Set UnpackingInventory Main Components Figure QtyOther Components and Hardware Site Considerations Clean UpWorkbench Load Operational ClearancesTo assemble the Model G1005Z MountingAssemblyTo test run the machine Test Run Installing/Removing Tooling Operation Safety Using Clean Tapers To install tooling on included mill arborTo install end mill tooling To install an arborTo install the drill chuck To remove an arborTo remove a drill bit To install a drill bitLongitudinal Feed Cross FeedMicro-Downfeed Handwheel Graduated DialsBacklash To correct for backlashDepth Stop Quill LockChoosing Milling Speeds Using the Drill Bit Speed ChartChoosing Drilling Speeds Lubrication SuggestionsDrill bit speed chart To change speeds Changing SpeedsDrilling Guidelines Accessories H2689-R8 Quick Change Collet SetH1300 H1298 G7984 H2347 H0736 Cleaning MaintenanceSchedule Unpainted Cast IronService TroubleshootingMotor & Electrical Operation Symptom Possible Cause Possible SolutionSymptom Possible Cause Possible Solution To calibrate the depth stop Depth Stop Feed Shaft Spring CalibrationPage G1005Z Junction Box G1005Z Mill/Drill Electrical ComponentsWiring Diagram G1005Z Description G1005Z Main Assembly Parts ListG1005Z Table Breakdown G1005Z Table and Labels Parts List Warranty and Returns Page Page
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