Yamazaki Mazak Corporation

Mazak Corporation

Jonathon Marshall

Javon D Carson

Takuya Il

Takuya Ii

In accordance with one aspect, a vertical machine tool is provided having an upper headstock with an upper spindle and a lower tailstock with a lower spindle. A workpiece is secured to the lower tailstock and the headstock drives the upper spindle and a milling tool connected thereto at high speeds for milling the workpiece. The vertical machine tool is also operable to perform turning operations on the workpiece using a turning tool connected to the headstock spindle. The headstock has a mechanical spindle lock that may be configured to rigidly fix the headstock spindle to the headstock housing so that, during the turning operation, the headstock spindle is secured against rotation from loading applied to the turning tool held in the headstock spindle. The lower tailstock drives the lower spindle to rotate the workpiece at speeds up to 2,500 RPM while the non-rotating turning tool held in the upper headstock machines the workpiece.

Vertical machine tool apparatus and method

A tool magazine includes at least one tool carriage movable along a circulation path. The tool holders each have tool pot sockets to which the tool pots are mountable. The tool holders are disposed pivotably about a pivot axis with respect to the at least one tool carriage. The tool pot sockets include a first and second tool pot sockets. An angle is created in a pivoting direction about the pivot axis between a first tool pot mounted to the first tool pot socket and a second tool pot mounted to the second tool pot socket. The turning device turns each of the tool holders about the pivot axis at a position on the circulation path. The tool pot stopper positions each of the tool pots and stops one of the first tool pot and the second tool pot at a pivotable location in the pivoting direction.

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Amelia, OH, United States of America

Jonathon Marshall