Universal Horizontal Milling Machine
Milling Machine Parts
• Base
• Gives support and rigidity to machine.
• Acts as reservoir for cutting fluids.
• Column face
• Precision-machined and scraped section used to support and guide. knee when moved vertically.
• Knee
• Houses feed mechanism.
• Attached to column face and moved vertically.
• Saddle
• On top of knee
• Moved in or out by
Means of cross feed hand wheel (manually or automatically)
• Swivel table housing
• Fastened to saddle on universal milling machine.
• Enables table to be swiveled 45º either side of centerline
• Table
• Rests on guide ways in saddle and travels left and right
• Supports vise and work
• Cross feed hand wheel
• Used to move table in and out
• Table hand wheel
• Used to move table left and right
• Feed dial
• Used to regulate table feeds
• Spindle
• Provides drive for attachments, arbors, cutters
• Over arm
• Provides for correct alignment and support of arbor and various attachments
• Can be adjusted and locked in various positions.
• Arbor support
• Fitted to over arm and can be clamped
• Aligns and supports various attachments
• Elevating screw
• Gives upward or downward movement to knee and table (manually or automatically)
• Spindle speed dial
• Set by crank used to regulate spindle speed.
Backlash Eliminator
• Eliminates backlash (play) between nut and table lead screw
• Permits operation of climb (down) milling
• Two independent nuts mounted on lead screw
• Nuts engage common crown gear which meshes with rack
• Axial movement of rack controlled by backlash eliminator engaging knob on front of saddle
• Turning knob in, nuts forced to move along lead screw in opposite directions
• Machine Backlash Eliminator
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