Numerically controlled lathe with guide bush, and method of processing workpiece by using the numerically controlled lathe
AssigneeCitizen Holdings Co., Ltd.
InventorsAkihide Kanaya, Noriyuki Haseba
Life of this patent
Estimating the term…
Abstract
Disclosed is a numerically controlled lathe 100 which includes a head stock 110 which rotatably supports a spindle 120; a guide bush 170 disposed so as to face the head stock 110 and configured to support one end of a bar-like workpiece W extending from the spindle 120; and a tool post 130 having a tool T1 to process the workpiece W supported by the spindle 120 and the guide bush 170, the guide bush 170 being movable in the same direction as a spindle axis C, the lathe further including a first processing region A which is provided between the guide bush 170 and the spindle 120 and in which the workpiece W is processed by the tool T1 attached to the tool post 130.
Claims9
A numerically controlled lathe, comprising:
- a spindle;
- a guide bush having a guide hole thereon and supporting an end portion of a workpiece extending from the spindle;
- a first tool post having a first tool machining the workpiece;
- and
- a second tool post having a second tool machining the workpiece,
- wherein an inner diameter of the guide hole is smaller than an outer diameter of the workpiece,
- the first tool post is disposed to machine the workpiece between the guide bush and the spindle by the first tool so that the outer diameter of the workpiece fits to the inner diameter of the guide hole,
- the guide bush is disposed to pass the workpiece machined by the first tool through the guide hole so that the end portion of the workpiece machined by the first tool projects from the guide bush, and
- the second tool post is disposed to machine the end portion of the workpiece projecting from the guide bush by the second tool.
A method of processing a workpiece with a numerically controlled lathe including a guide bush supporting an end portion of the workpiece extending from a spindle and machining the workpiece between the spindle and the guide bush while supporting the workpiece with the guide bush, the method comprising:
- preparing a first tool post having a first tool machining the workpiece between the guide bush and the spindle, and a second tool post having a second tool machining the end portion of the workpiece projecting from the guide bush;
- machining the workpiece between the guide bush and the spindle by the first tool to form an outer diameter of the workpiece fitting into an inner diameter of a guide hole of the guide bush;
- passing the workpiece machined by the first tool through the guide bush to hold the workpiece with the guide bush;
- and
- machining the end portion of the workpiece projecting from the guide bush by the second tool.
Dependencies are inferred from the claim text.