Patents by Inventor Hayao Hirai
Hayao Hirai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5914876Abstract: In a numerically controlled system including one or more multiple axis, multiple function controlled machines, of the type wherein control is exercised through the use of a processing program including a plurality of control words for respectively controlling functions of one or more machines, the improvement of the invention resides in the use of an expanded set of the control words created by adding one or more subwords to the conventional control words control words, at least a portion of the subwords being specific to a control group within which the control word will be effective or an axis or plane in which the control word will operate. An interpreter for the expanded control words is provided for expanding a processing program containing expanded control words into a plurality of control programs, at least a portion of which are specific to ones of the control groups.Type: GrantFiled: June 5, 1996Date of Patent: June 22, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hayao Hirai
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Patent number: 5815400Abstract: A machining method in which a numerically controlled apparatus carries out a series of operations such as the determination of machining procedures, the selection of a tool, the preparation of a workpiece and inspection programs, machining operation, and inspection, required when a numerically controlled machine tool carries out a machining operation on the basis of input graphics and process information, using at least machine tool information, tool information, cutting condition information, material information, machining method symbol information, finishing symbol information, finishing allowance information, surface treatment information, information about thermal refining, and cost information, the method includes the steps of, while using electronic calculators including a numerical control unit, an FA system, and a personal computer, and a series of data processing units and machine tools, registering a variety of information files; inputting machining pattern data; processing a finished pattern; procType: GrantFiled: July 10, 1996Date of Patent: September 29, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hayao Hirai, Akihiko Fujimoto
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Patent number: 5786777Abstract: The decimal numbers in ASCII code are converted into base n number codes, where the base n is greater than ten, and then are transmitted between the main control unit and the terminals including servo systems and spindle systems in an automated factory system. The data is thus compressed, and greater number of axes of the numerically controlled devices, etc., can be controlled within a predetermined time length for transmitting the data.Type: GrantFiled: April 7, 1997Date of Patent: July 28, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hayao Hirai
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Patent number: 5444640Abstract: A numerical control method for controlling various kinds of machine tools by correcting for thermal displacement. Data relative to thermal displacement, thermal displacement sampling time, and processing cycle time is stored in memory. Before each process, the shift of an absolute position of a machine origin is measured to provide an initial value. The machine tool is energized and thermal displacement data is gathered according to a sampling time. The sampling time is varied according to the degree of thermal displacement. Processing is performed on the data to correct for the thermal displacement of the machine tool.Type: GrantFiled: January 13, 1993Date of Patent: August 22, 1995Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hayao Hirai
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Patent number: 4978901Abstract: A machining data forming system for a numerical control device in which machining data are inputted through interaction with a display unit. Since the present system is provided with a machining menu for a variety of machining position patterns, it is unnecessary to obtain the center or position coordinates of the machining position patterns. As a result, the number of interactive data inputting steps can be reduced to thereby improve the program inputting efficiency.Type: GrantFiled: May 16, 1989Date of Patent: December 18, 1990Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hayao Hirai
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Patent number: 4914364Abstract: Disclosed herein is a numerical control apparatus for controlling drive spindle heads in a rectangular coordinate system of machining apparatuses such as a lathe, a miller, a laser beam machining apparatus, an electric discharge machining apparatus, a robot and the like, to thereby perform positioning control.Type: GrantFiled: October 22, 1987Date of Patent: April 3, 1990Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hayao Hirai
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Patent number: 4881021Abstract: A numerical control equipment comprises a control section for applying to a drive motor for driving a table on which an object under measurement is placed a movement instruction for moving said object to a theoretical position, a position register for receiving a detection signal outputted by a position sensor adapted to detect the position of the table, a memory unit for storing instruction data separately according to functions and uses, and a measuring head for measuring the difference between the stop position of the object and a reference position simultaneously with positioning of the object to the theoretical position, wherein said control unit operates a measurement value provided by the measuring head and a register value of the position register and rewrites the contents of addresses provided separately according to functions and uses in the memory unit with an operated value as a measurement result.Type: GrantFiled: October 23, 1987Date of Patent: November 14, 1989Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hayao Hirai
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Patent number: 4811303Abstract: An integrated circuit memory which can be applied, for example, to a memory device of a dialogue type tool information interface for an NC machine tool or a memory unit of various identification cards, comprises a fixed memory unit where necessary information is fixedly stored and the information cannot be rewritten, and a rewrite memory unit where necessary information among information of various sorts supplied from the interface or the card read/write apparatus can be rewritten if necessary, and the fixed memory unit and the rewrite memory unit are integrated in one chip or a single body of one module.Type: GrantFiled: November 21, 1986Date of Patent: March 7, 1989Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hayao Hirai
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Patent number: 4767972Abstract: In a numerical control equipment in which an image signal from an image unit and a display signal from a central processing unit (CPU) of the numerical control equipment are displayed on a single display unit selectively by a switching means provided in the apparatus, the display unit is driven in response to a synchronizing signal from the CPU and the equipment is equipped with a synchronized image signal feeding means for supplying the image signal to an input interface of the equipment in response to the synchronizing signal. With this construction, the input interface can be used commonly for various image units regardless of the type and characteristics thereof.Type: GrantFiled: September 12, 1986Date of Patent: August 30, 1988Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hayao Hirai