Yamazaki Mazak Corporation

Makoto Tahara

Kiyoshi Nishida

Jojiro Kimura

Kazuhiro Noda

Takeshi Yasuda

Nobuhiro Sakai

A table rotation device includes a bearing assembly, a table support member, a support block, and a cooling block. The bearing assembly includes a fixed ring, a movable ring, and rolling elements provided between the fixed ring and the movable. The movable ring is rotatable about the rotation axis. The table support member is connected to the movable ring so as to fix a position of the table support member relative to a position of the movable ring. The support block is connected to the fixed ring so as to fix a position of the support block relative to a position of the fixed ring. The cooling block is connected to at least one of the fixed ring and the support block such that the cooling block is in contact with both the fixed ring and the support block. The cooling block provides a cooling passage.

Table rotation device and machine tool

A machine tool includes a main machine, a pallet change unit, a main body cover, a machine entry door, an internal machine cover, and an internal entrance area. The main machine is configured to machine a workpiece. The pallet change unit is adjacent to the main machine. The main body cover is provided on the pallet change unit. The machine entry door is provided in the main body cover. The internal machine cover is connected to the machine entry door. The internal entrance area is defined by the machine entry door and the internal machine cover. The machine entry door and the internal machine cover are constructed to sweep the internal entrance area.

Growing community of inventors

Niwa-gun, Japan

Makoto Tahara