Vertical Machine Tool Apparatus And Method

摘要

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.

主权项

1. A vertical machine tool for performing milling and turning operations on a workpiece, the vertical machine tool comprising:
an upper headstock having a housing; a headstock spindle of the headstock configured to receive a milling tool or a turning tool, the headstock spindle being rotatable relative to the headstock housing; a lower tailstock having a rotatable tailstock spindle for supporting the workpiece; a mechanical spindle lock of the headstock having an unlocked configuration that permits the headstock spindle to rotate relative to the headstock housing and perform milling operations on a workpiece with the milling tool and a locked configuration that mechanically fixes the headstock spindle relative to the headstock housing and permits the turning tool received in the fixed headstock spindle to perform a turning operation on the workpiece with rotation of the tailstock spindle.