Company Filing History:

9 out of 42,485

Hitachi, Ltd.

patents

3 out of 228

Hitachi Software Engineering Company, Ltd.

patents

2 out of 832,680

Other

patents

where one patent can have more than one assignee

Years Active: 1991-2006

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7149599 - Apparatus and method for creating tool path (2006-12-12),

2. 6999845 - Numerically controlled curved surface machining unit (2006-02-14),

3. 6934601 - Numerically controlled curved surface machining unit (2005-08-23),

4. 6718226 - Method of providing data for numerical control machining unit (2004-04-06),

5. 6675061 - Numerically controlled curved surface machining unit (2004-01-06),

6. 6587747 - Numerically controlled curved surface machining unit (2003-07-01),

7. 5649081 - Method and apparatus for pattern data processing (1997-07-15),

8. 5566281 - Method and apparatus for generating a surface by simulating a physical (1996-10-15),

9. 5537523 - Method and apparatus for displaying altitude of form characteristics (1996-07-16),

10. 5485560 - Displaying method and system for displaying an object by designating a (1996-01-16),

11. 5003498 - Graphic display method (1991-03-26),

Title: Hiroshi Arai: Innovator in Tool Path Creation and Machining Technology

Introduction

Hiroshi Arai is a prominent inventor based in Hitachiota, Japan. He has made significant contributions to the field of machining technology, holding a total of 11 patents. His work focuses on improving the efficiency and accuracy of tool path creation and numerically controlled machining units.

Latest Patents

Among his latest patents, Arai has developed an "Apparatus and method for creating tool path." This invention allows for the creation of a new tool path from two existing tool paths, enhancing the precision of cutting operations. The first tool path data consists of a position vector and a direction vector for the tool, while the second tool path data is similarly structured for further cutting of the workpiece. A computer utilizes this data to calculate a medium tool path that lies between the two original paths.

Another notable patent is the "Numerically controlled curved surface machining unit." This unit features three linearly moving axes and at least one rotary axis, enabling simultaneous multiple-axis control. It incorporates a numerical control unit with a NURBS interpolation function, allowing for the reading of cutter location data and the calculation of position vectors and feed rates necessary for operating the machine effectively.

Career Highlights

Hiroshi Arai has worked with several esteemed companies, including Hitachi, Ltd. and Hitachi Software Engineering Company, Ltd. His experience in these organizations has significantly influenced his innovative work in machining technology.

Collaborations

Arai has collaborated with notable coworkers such as Junichi Hirai and Osamu Chiba, contributing to advancements in their respective fields.

Conclusion

Hiroshi Arai's contributions to tool path creation and machining technology have established him as a key figure in the industry. His innovative patents continue to influence the efficiency and accuracy of machining processes.

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