公开(公告)号：US10421168B2

公开(公告)日：2019-09-24

申请号：US15961998

申请日：2018-04-25

Applicant: STAR MICRONICS CO., LTD.

Inventor： Shin Ito

IPC: B23Q11/08 ,  B23B7/06 ,  B23B13/12 ,  B23B25/04 ,  B23Q5/40

Abstract: The machine tool comprises a headstock provided with a main spindle; a driving unit which moves the headstock in a main spindle axial direction and has a feed mechanism extended in the main spindle axial direction and a front end supporter which rotatably supports a front end of the feed mechanism; a first front cover mounted on the headstock in a first position between the main spindle and the feed mechanism with respect to a diameter direction from a main spindle axis toward the feed mechanism; and a second front cover mounted on the front end supporter in a second position between the main spindle and the feed mechanism. Part of the feed mechanism is covered by both of the first front cover and the second front cover when at least part of the first front cover is on the rear side of the second front cover.

公开(公告)号：US11358225B2

公开(公告)日：2022-06-14

申请号：US17032230

申请日：2020-09-25

Applicant: STAR MICRONICS CO., LTD.

Inventor： Masatoshi Deno ,  Shin Ito

IPC: B23B3/24

Abstract: Provided is a lathe capable of facilitating replacement of a ball screw. A machine tool comprises a base, a moving unit, a ball screw, a cap, and a supporting unit provided on the base to support the cap. The cap has a body and a flange expanded larger than the body on the outer side thereof with respect to the axis direction. The supporting unit comprises a recess part which receives the body. The recess part is provided with an opening allowing the threaded shaft to pass in a direction perpendicular to the axis direction in the state that the supporting unit is provided on the base. The supporting unit further comprises a positioning part on which an inner surface of the flange abuts in the axis direction in the state that the body is received in the recess part.

公开(公告)号：US20210008631A1

公开(公告)日：2021-01-14

申请号：US17032230

申请日：2020-09-25

Applicant: STAR MICRONICS CO., LTD.

Inventor： Masatoshi Deno ,  Shin Ito

IPC: B23B3/24

Abstract: Provided is a lathe capable of facilitating replacement of a ball screw. A machine tool comprises a base, a moving unit, a ball screw, a cap, and a supporting unit provided on the base to support the cap. The cap has a body and a flange expanded larger than the body on the outer side thereof with respect to the axis direction. The supporting unit comprises a recess part which receives the body. The recess part is provided with an opening allowing the threaded shaft to pass in a direction perpendicular to the axis direction in the state that the supporting unit is provided on the base. The supporting unit further comprises a positioning part on which an inner surface of the flange abuts in the the axis direction in the state that the body is received in the recess part.