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AssigneeUnova U.K. Limited
InventorMichael Laycock
Estimating the term…
A method of supporting a workpiece having journal and eccentric regions, in a grinding machine for grinding the eccentric regions thereof, is described which involves mounting the workpiece in a headstock of the grinding machine, providing a coupling between the workpiece and a rotary drive mechanism for rotating the workpiece about its main axis and fitting around at least one remote journal region of the workpiece a pair of members which form a journal bearing complementary to the said region, and fixing the lower of the two members to the machine, thereby providing support for the workpiece at the said remote position. The method is particularly relevant to the grinding of crankpins of a crankshaft. A grinding machine for grinding the crankpins of a crankshaft workpiece comprises headstock means mounted on the machine bed, a grinding wheel mounted on a wheelhead assembly, drive means for moving the wheelhead towards and away from a workpiece when fitted to the headstock, drive means for rotating a workpiece when mounted in the headstock, and two part cradle means mounted in the machine at least one part of which presents at least an upwardly directed curved support surface for engaging the underside of a journal bearing region of a crankshaft workpiece when fitted to the headstock.
A method of supporting a workpiece having crankpins and journal regions, in a grinding machine for grinding the crankpins while the workpiece rotates about a main axis thereof which passes through the journal regions, comprising the steps of:
Crankshaft supporting apparatus in combination with a crankshaft for use in a grinding machine for supporting the crankshaft for grinding the crankpins thereof, in which the crankshaft has journal regions and is carried at one end by a headstock and is rotatable by drive means about a main axis thereof which passes through the journal regions, said support apparatus comprising at least one two part combination at least one part of which is securable to the machine, and which two parts are fitted around and at least in part encircle at least one of the journal regions of the crankshaft, to provide support therefor remote from the headstock.
Crankshaft supporting apparatus in combination with a crankshaft and a grinding machine for grinding crankpins of the crankshaft having coaxial journal regions disposed between the crankpins, comprising:
A cradle cradle assembly in combination with a crankshaft for supporting a cylindrical journal region of the crankshaft while the latter is being machined, comprising a lower part secured to a fixed part of a machine and shaped to receive the lower half of the said region, and an upper part movable toward the lower part to enclose and capture the region before and during machining, and movable away from said lower part to enable the crankshaft when machined to be removed and a new crankshaft to be inserted.
Dependencies are inferred from the claim text.