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Class Information
Number: 451/249
Name: Abrading > Machine > Rotary tool > Rotary cylinder > Work rotating > Rotary work holder > Spaced abrading areas
Description: Abrading machine in which the workpiece is abraded in at least two distinct locations.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8678881 Grinding center and method for simultaneous grinding of a plurality of bearings and end-side surfaces of crankshafts Mar. 25, 2014
8602841 Form tap and method of making such Dec. 10, 2013
8602840 Grinding machine comprising two spindle sets Dec. 10, 2013
8360819 Method for grinding a machine part, and grinding machine for carrying out said method Jan. 29, 2013
7837533 Apparatus for processing and measuring workpieces which are provided with cutting teeth Nov. 23, 2010
7458880 Method for grinding of cam profiles Dec. 2, 2008
7115019 Grinding method and grinding machine Oct. 3, 2006
7037176 Through-in grinding method and through-in grinding apparatus May. 2, 2006
6878043 Rough- and finish-grinding of a crankshaft in one set-up Apr. 12, 2005
6869343 Turning tool for grooving polishing pad, apparatus and method of producing polishing pad using the tool, and polishing pad produced by using the tool Mar. 22, 2005
6575812 Setting up process for a tool or workpiece on a gear making machine Jun. 10, 2003
6409573 Combination grinding machine Jun. 25, 2002
6334806 Apparatus for and a method of machining two portions Jan. 1, 2002
6149502 Crankshaft machining method Nov. 21, 2000
6015336 Grinding apparatus Jan. 18, 2000
5984599 Method and machine for rotary milling the crankpins and main bearing pins of crankshafts Nov. 16, 1999
5797992 Method for environmental treatment of heavy metals Aug. 25, 1998
5707187 Crankshaft milling apparatus Jan. 13, 1998
5598618 Mainrotor machining process and apparatus Feb. 4, 1997
5537866 Method and device for correcting imbalance of pneumatic vehicle tires by removing bead material Jul. 23, 1996
5520570 Workpiece radial locator device and method May. 28, 1996
5331769 Grinding apparatus and method Jul. 26, 1994
5189846 Chuck indexing arrangement and method Mar. 2, 1993
5144772 Method and apparatus for angularly indexing a crankshaft Sep. 8, 1992
5030049 Tool-outfitted turn broaching machine Jul. 9, 1991
4998383 Means for resetting a cylindrical grinding machine Mar. 12, 1991
4963164 Machine for surface treatment with means for positioning processing tools Oct. 16, 1990
4934106 Grinding machine Jun. 19, 1990
4928437 Means and method for resetting a cylindrical grinding machine May. 29, 1990
4841682 Process and device for producing turned parts from rods or bars Jun. 27, 1989
4831782 Apparatus for grinding a workpiece May. 23, 1989
4791759 Grinding wheel position detecting means for surface grinding machine Dec. 20, 1988
4790698 Monotonic cutting machine Dec. 13, 1988
4773187 Numerically controlled grinding machine Sep. 27, 1988
4766700 Method and apparatus for determining the position of a workpiece in an NC-controlled machine Aug. 30, 1988
4681491 Milling machine Jul. 21, 1987
4679973 Crankshaft milling machine Jul. 14, 1987
4662118 Grinding machine May. 5, 1987
4625461 Method and apparatus for positioning work supporting units in grinding machines Dec. 2, 1986
4615149 Feed control apparatus for grinding machine Oct. 7, 1986
4614467 Cam milling machine Sep. 30, 1986
4603514 Method of grinding a workpiece having a cylindrical portion and shoulder portions Aug. 5, 1986
4586294 Machine tools May. 6, 1986
4584795 Numerical control grinding machine for grinding a taper portion of a workpiece Apr. 29, 1986
4584796 Numerical control grinding machine Apr. 29, 1986
4580368 Centerless and center-type grinding systems Apr. 8, 1986
4569157 Flagging apparatus and machine equipped therewith Feb. 11, 1986
4569457 Bottle closure Feb. 11, 1986
4527357 Internal grinding machine Jul. 9, 1985
4525112 Milling machine Jun. 25, 1985

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