Boots – shoes – and leggings
Patent
1987-12-04
1989-08-29
Fleming, Michael R.
Boots, shoes, and leggings
36447414, 318625, G06F 1546, B24B 1908
Patent
active
048623806
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a numerical control unit and, more particularly, to a numerical control unit for synchronously controlling first and second axes, as the occasion may demand, along which first and second members are respectively moved in the same direction, or for controlling these axes independently.
When a workpiece is subjected to machining, there are occasions where plural types of processing machinery are required. For example, there are cases where a workpiece is subjected to turning work, after which the workpiece, which has been machined into a cylindrical configuration by the turning work, is cut off, followed by drilling a screw hole in the cut face. In this instance, a lathe and a drill are required. When such is the case, the conventional practice is for the operator to set the workpiece for the drill at the conclusion of the machining performed by the lathe.
Thus, when a workpiece is machined using plural types of processing machinery in the prior art, the operator must set the workpiece for each type of processing machinery. The problem that results is inefficient machining.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a numerical control unit which makes possible machining by plural types of processing machinery without requiring that the operator reset the workpiece.
In order to solve the aforementioned problem, the present invention provides a numerical control unit for controlling motion along each axis in accordance with numerical information, wherein movement along first and second axes is controlled synchronously in accordance with numerical information regarding the first axis in response to a synchronous control command, and movement along the first and second axes is controlled in accordance with numerical information regarding each of the first and second axes in response to an independent control command.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram of an embodiment of the invention, and FIG. 2 is a flowchart showing the contents of processing executed by a microprocessor of FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENT
FIG. 1 is a block diagram of an embodiment of the invention, in which numeral 1 denotes a microprocessor; 2 a memory in which is stored a control program that causes the microprocessor 1 to perform a predetermined operation; 3 a tape reader; 4 a command tape on which command blocks (NC data) are recorded; 5 a keyboard; 6 a spindle controller; 7, 8 and 9 X-, Y- and Z-axis controllers, respectively; 10-13 drive circuits for spindle motors and the respective axes; 14 and 15 spindle motors; 16 and 17 chucks; 18 a workpiece; 19 a motor for transporting a cutter 25 along the X axis; 20 and 21 motors for respectively transporting tables 26, 27, on which the respective spindle motors 14, 15 are mounted, in horizontal directions (the horizontal direction of the table 26 is taken as the direction along the Y axis and the horizontal direction of the table 27 is taken as the direction along the Z axis); 22 -24 position sensors; 28 a rotary mechanism; 29 a drill; and 30 an output unit. The chuck 17 grips the workpiece 18 if a signal a outputted by the output unit 30 is "1" and releases the workpiece 18 if the signal a is "0". The rotary mechanism 28 changes the orientation of the spindle motor 14 by 180 degrees, depending upon whether a signal b outputted by the output unit 30 is "1" or "0". The state indicated by the solid lines in FIG. 1 prevails when b="1" holds, and the state indicated by the dashed lines prevails when b="0" holds.
FIG. 2 is a flowchart illustrating the contents of processing executed by the microprocessor 1. This Figure will now be referred to in order to describe the operation of FIG. 1.
The operator first mounts the workpiece 18 in the chucks 16, 17, as shown in FIG. 1 and then inputs a machining start command from the keyboard 5. When the machining start command is inputted thereto, the microprocessor 1 applies a control signal to the output unit 30
REFERENCES:
patent: 4424569 (1984-01-01), Imazeki
patent: 4586124 (1986-04-01), Wiederstein
patent: 4608643 (1986-08-01), Breitenstein
patent: 4624607 (1986-11-01), Kato
patent: 4683786 (1987-08-01), Kersten
patent: 4684862 (1987-08-01), Rohrle
Kawamura Hideaki
Sasaki Takao
Fanuc Ltd
Fleming Michael R.
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