Akira A Sugiyama, 76Torrance, CA

2010020, Aug 19, 2010

Oct 6, 2008

12/677629

Akira Sugiyama - Rancho Palos Verdes CA, US
Yoshinori Tatsuda - Ishikawa-ken, JP

TSUDAKOMA KOGYO KABUSHIKI KAISHA - Kanazawa-shi, Ishikawa-ken

B23B 31/26

173213

A machine-tool spindle head makes it possible to prevent the size of the entire device from increasing and can easily control drive motors compared to a related device. A machine-tool spindle head includes a spindle unit and a fork-shaped support head . The spindle unit rotationally drives a spindle to whose end a tool is mounted. The support head supports the spindle unit and includes a pair of fork arms rotatably supporting a pair of support shafts . The spindle head includes a drive shaft , a drive motor , and a pair of drive transmission mechanisms . The drive shaft is rotatably supported in the support head and extends parallel to an axial direction of the support shafts . The drive motor rotationally drives the drive shaft . The drive transmission mechanisms connect end portions of the drive shaft and the respective support shafts to each other, and transmit rotation of the drive motor to the support shafts

2012003, Feb 16, 2012

Aug 3, 2010

13/138688

Akira Sugiyama - Rancho Palos Verdes CA, US

B23Q 1/70

409202

A support configuration enabling reciprocative movement of a ram by use of a saddle in order to suppress vibration of the ram, and chattering phenomenon of a cutting tool, thereby aiming at not only improvement in heavy cutting, and improvement of a finished surface, but also extension in service life of the cutting tool, and prevention of breakage of the cutting tool. A ram guiding apparatus of a machine tool is incorporated in a portal type machine tool and provided with a cross saddle that is cross-like in shape, as seen in a side view of the machine tool , provided so as to be freely movable in the horizontal direction along a horizontal cross beam . The cross saddle has a box , both upper and lower faces thereof being open, in front side of a horizontal part, wherein a first linear guide , a second linear guide , and a third linear guide , respectively serving as linear guides in the box for a ram vertical movement guide the ram so as to be freely movable only in the vertical direction.

2019000, Jan 10, 2019

Jun 28, 2018

16/021901

Akira SUGIYAMA - Rancho Palos Verdes CA, US

B23Q 5/38
B23Q 3/157

In the machine tool , two or more machine tables are movably provided on the linear way of the machine base , the pinion gear is engaged with the rack of the machine base , and the feeding movement of each table , the pinion gear is driven by a feed motor mounted on each table , and the feed motor is controlled by the table control unit so that the table is fed and moved. In the table independent mode, the movement of the table is independently controlled, and in the table linkage mode, the feeding movements of two or more tables are controlled in the same direction at the same speed and in the synchronous state as the same movement amount.