Creeping Ahead

Author Chris Stine
June 01, 2007 - 12:00pm

Replacing milling and broaching with creep-feed grinding. Why more shops have replaced milling and broaching with creep-feed grinding.

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Related Glossary Terms

  • broaching


    Operation in which a cutter progressively enlarges a slot or hole or shapes a workpiece exterior. Low teeth start the cut, intermediate teeth remove the majority of the material and high teeth finish the task. Broaching can be a one-step operation, as opposed to milling and slotting, which require repeated passes. Typically, however, broaching also involves multiple passes.

  • creep-feed grinding

    creep-feed grinding

    Grinding operation in which the grinding wheel is slowly fed into the workpiece at sufficient depth of cut to accomplish in one pass what otherwise would require repeated passes. See grinding.

  • gang cutting ( milling)

    gang cutting ( milling)

    Machining with several cutters mounted on a single arbor, generally for simultaneous cutting.

  • 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.

  • milling


    Machining operation in which metal or other material is removed by applying power to a rotating cutter. In vertical milling, the cutting tool is mounted vertically on the spindle. In horizontal milling, the cutting tool is mounted horizontally, either directly on the spindle or on an arbor. Horizontal milling is further broken down into conventional milling, where the cutter rotates opposite the direction of feed, or “up” into the workpiece; and climb milling, where the cutter rotates in the direction of feed, or “down” into the workpiece. Milling operations include plane or surface milling, endmilling, facemilling, angle milling, form milling and profiling.


Vice President

Chris Stine is vice president of United Grinding Technologies Inc., Miamisburg, Ohio. Contact him at (937) 847-1215 or by e-mail: United Grinding is the North American arm of Körber Schleifring and has two main offices. The company’s factory in Fredericks-burg, Va., handles EWAG and Walter tool grinders and measuring machines, while a factory in Miamisburg sup-ports Studer, Blohm, Jung, Mägerle, Schaudt and Mikrosa cylindrical and profile grinders. For more informa-tion, visit