Airbearing Endmill Grinding Fixtures

June 01, 2011

Rush Machinery Inc. offers a series of airbearing end mill grinding fixtures that allow precision sharpening of end mills, reamers, shell mills and other cutters. The spindle floats almost frictionless on a thin film of air, resulting in a smooth, even grind. The fixture quickly mounts on Rush drill and tool grinders, and it is also available with a universal base to mount on most tool and cutter or surface grinders.

The units feature a hard chrome plated and ground spindle with a 10" stroke. Tools are held by 5-C or 5-ST collets or extension bushings for up to 2" (50mm) diameter shanks. The fixtures allow for grinding the O.D. of any number of flutes and include a 12-position index plate for end grinding (other index plates are available). The micrometer infeed is graduated in .001" (.04mm) of diameter. Use of the fixture allows the operator to customize end mill geometry for optimum performance.

Related Glossary Terms

  • fixture

    fixture

    Device, often made in-house, that holds a specific workpiece. See jig; modular fixturing.

  • flutes

    flutes

    Grooves and spaces in the body of a tool that permit chip removal from, and cutting-fluid application to, the point of cut.

  • grinding

    grinding

    Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.

  • micrometer

    micrometer

    A precision instrument with a spindle moved by a finely threaded screw that is used for measuring thickness and short lengths.

  • milling machine ( mill)

    milling machine ( mill)

    Runs endmills and arbor-mounted milling cutters. Features include a head with a spindle that drives the cutters; a column, knee and table that provide motion in the three Cartesian axes; and a base that supports the components and houses the cutting-fluid pump and reservoir. The work is mounted on the table and fed into the rotating cutter or endmill to accomplish the milling steps; vertical milling machines also feed endmills into the work by means of a spindle-mounted quill. Models range from small manual machines to big bed-type and duplex mills. All take one of three basic forms: vertical, horizontal or convertible horizontal/vertical. Vertical machines may be knee-type (the table is mounted on a knee that can be elevated) or bed-type (the table is securely supported and only moves horizontally). In general, horizontal machines are bigger and more powerful, while vertical machines are lighter but more versatile and easier to set up and operate.

Additional Products from Rush Machinery

The Truing Parameters Calculator is the result of a 3-year collaboration between Rush Machinery, the International Grinding Institute, and Dr. Jeffrey Badger, the ‘Grinding Doc’. Rush Machinery commissioned the project that was later presented at the 2008 CIRP General Assembly in Tokyo by Read More

The CH-CM0406 Cut Pre-Point Chamfer Machine makes carbide blanks that are ready for tool grinding. The machine converts blank carbide rods into tool blanks. It is suitable for cutting tool manufacturers that want to make tools from a blank that is already pre-pointed and chamfered. The machine is Read More

Rush Machinery offers the Model FC-350EX and Model FC-350W wheel truing and dressing machines, designed for truing and dressing flats, angles, and radii on diamond and CBN single wheels and multiple wheel packs.

Rush Machinery is offering the CH-CM0203 CNC Carbide Rod Chamfer Machine for chamfering blanks for carbide and HSS cutting tools. The machine comes equipped with a large-capacity magazine, an automatic loader, a flood coolant system, 2-axis servomotor and servo amplifier, and fully automatic CNC.

Rush Machinery offers the new Rush Easy-Cut XL semiautomatic carbide cut-off machine for quick and easy cutting of carbide flat stock up to 2”x4” or rod and tool ends with diameters between 1/8” to 2”.

The 2 Rod “Auto-Cut” CNC Carbide Cut-Off Machine automatically cuts carbide rod into precision lengths. This production machine, designed for cutting tool manufacturers and carbide rod processors, has a large-capacity magazine and an automatic loader to provide hours of unattended operation.

The BMT-150M On-Machine Balancing Kit from Rush Machinery for balancing wheels and wheel packs on truers or grinding machines. The kit comes with everything you need to get started.

Rush offers the Models FC-200D, FC-300D, FC-500D and FC-200CNC polycrystalline tool grinders, which allow for economical manufacturing and regrinding of PCD, CVD, PCBN, carbide and HSS tools. These machines grind angles and radii on standard and special turning and milling inserts, boring tools, Read More

Rush Machinery Inc.'s Drill and Tool Grinders have helped thousands lower their holemaking costs through higher precision, faster production, less down time and reduced tool inventory.

Ideal for tool manufacturers, grinding wheel manufacturers, and production grinding facilities, the economical Model FC-250W Diamond/CBN Wheel Truing and Dressing Machine from Rush Machinery Inc. is for truing and dressing flats, angles, and radii on diamond and CBN single wheels and multiple Read More