Boots – shoes – and leggings
Patent
1981-06-22
1984-04-24
Ruggiero, Joseph F.
Boots, shoes, and leggings
318572, 364170, 364171, G06F 1546, G05B 1918
Patent
active
044451822
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a method of control of machine tools of the type wherein the actual movement of the machine is automatically computed by inputting the machining shape and finish size of the workpiece and machining conditions by means of key switches attached to an operating board, whereupon the machine is controlled on the basis of the results of computations.
BACKGROUND OF THE INVENTION
Conventional NC machines are classified into three types, namely, one in which all control data is inputted in the form of punched tapes, another in which data to be punched is inputted by keying, and the other in which actual machining is performed and the data resulting therefrom is stored. However, the first two types necessitate programing in detail the movement of the object to be controlled by using a particular NC language and take much labor and time in preparing punched tapes and also present problems in tool setting. In the third type, the skill of the operator in doing the actual work greatly influences the subsequent operation and there are various disadvantages in the control operation, so that this type has not been in wide use.
Thus, the applicant has previously proposed a device described in U.S. Pat. No. 4,033,206 as means for eliminating the drawbacks described above. This device is characterized by effecting the inputting of data by digital switches rather than by tapes, minimizing the number of steps of inputting data and simplifying the inputting operation. To this end, the device is so arranged that the machining shape and finishing shape and size to be imparted to the blank and machining conditions are inputted, with the mode for movement of the tool being fixed. The advent of this type of device has completely eliminated the drawbacks in the prior art.
SUMMARY OF THE INVENTION
The present invention relates to improvements in a method of control of said device.
An object of the invention is to provide a control method characterized in that the data necessary for machining work to be stored in a microcomputer contained in said device is reduced to a minimum necessary for machining shape and finishing shape position, while various data actually required during machining of work, such as the path of movement of the tool during rough machining, the path of movement of the tool during rough finish machining, and the path of movement of the tool during finish machining, is successively computed on the basis of data stored in a microcomputer. The processing of data associated with a variety of workpieces can be performed with a minimum of stored data.
Another object of the invention is to provide a control method wherein by simply inputting data on finishing shape and size into said microcomputer, the latter automatically computes the rough finish machining size and rough machining size to perform the required machining.
A further object of the invention is to provide a control method which makes it possible, in a simple operation, to machine complicated shapes having concaves and convexes.
An additional object of the invention is to provide a control method wherein data on the machining shape to be inputted into said computer is automatically corrected according to the shape of the cutting edge of the tool used for that machining.
Yet another object of the invention is to provide a control method wherein the operator causes said computer to decide whether the shape of the cutting edge of a tool and the machining shape of a workpiece, on which data is inputted into said computer, are appropriate or not.
Still a further object of the invention is to provide a control method wherein two successive machining steps can be accurately performed with two kinds of tools which are different in nose diameter.
By achieving these objects, it is possible to facilitate and make accurate the control of devices of this kind and provide improved performance.
The arrangement of the invention will become more apparent from the following detailed description of embodiments of the
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Kato Yoshihisa
Morita Eiichi
Oku Takuya
Takeda Koichi
Daihatsu Motor Company Limited
Ruggiero Joseph F.
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