Boots – shoes – and leggings
Patent
1987-08-05
1989-08-08
MacDonald, Allen
Boots, shoes, and leggings
36447411, 36447422, G05B 1918
Patent
active
048558982
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
This invention relates to a method of creating NC data and, more particularly, to an NC data creation method in which the rotating direction of a spindle is stored for each and every tool used and a spindle rotating direction command is outputted together with a tool selection instruction.
DESCRIPTION OF THE RELATED ART
As disclosed in the specification of U.S. Pat. No. 4,490,781, automatic programming systems are available for creating NC tapes (NC data) from a design drawing through a simple operation by entering data in a conversational mode using a graphic display screen. With such an automatic programming system, the necessary data are created sequentially in accordance with the following steps:
(1) a step of inputting the material of a blank;
(2) a step of inputting the format of the drawing;
(3) a step of inputting the blank profile (chosen from among a cylinder, hollow cylinder and special profile blank) and profile dimensions;
(4) a step of inputting the finished profile and finished profile dimensions;
(5) a step of inputting a machine reference point and turret position;
(6) a step of deciding a machining process;
(7) a step of deciding a tool; and
(8) a step of deciding cutting limits and cutting conditions.
The steps (6) through (8) are repeated until the final finished profile is obtained. The machining processes, the tools used in these machining processes, the cutting conditions and the cutting limits are decided automatically. For example, the following is registered in memory beforehand as a sequence of machining processes for machining a cylinder: includes the name of the machining process in which the tool is used and tool shape data indicative of the tool.
When the cylinder is inputted as the shape of the blank and the finished profile is then inputted, the names of the machining processes are read out in the order in which the machining processes were registered and tools which will not interfere with the workpiece are selected, upon considering the finished profile and the shapes of the tools, from among the tools registered for the machining processes that have been read. In addition, a machining area is decided based on the blank profile and finished profile, and a direction for approaching the chuck (along the -X or -Z axis) is decided as the cutting direction.
When the inputting of all data necessary for creating NC data is completed by the foregoing steps, the NC data (an NC tape) are finally created in automatic fashion. As for automatically deciding the machining processes, see the, specifications of U.S. Ser. No. 767,264, now U.S. Pat. No. 4,723,203, and International Application No. PCT/JP85/00589. With regard to automatically deciding tools used, see the specification of U.S. Pat. No. 4,723,203.
In the prior art, spindle rotating direction is treated as being dependent upon the machining process and is stored beforehand in a parameter storage area. With each new machining process, the rotating direction is determined upon referring to the parameter storage area. The NC data are created upon outputting a spindle rotation command (M03 for forward rotation and M04 for reverse rotation)) together with a tool selection instruction. More specifically, a corresponding relationship between the machining process and spindle rotating direction (i.e. forward rotation for end face cutting, reverse rotation for outer diameter cutting, and so forth) is stored as a parameter in the parameter storage area in advance and the NC data are created upon determining the spindle rotating direction based on the corresponding relationship.
However, there are right-handed tools and left-handed tools, in which case the spindle rotating direction is fixed at either forward rotation or reverse rotation. If left- and right-handed tools are used, a workpiece cannot be machined unless the spindle is rotated in the direction decided by the particular tool.
With the prior-art method, however, the direction in which a spindle is rotated is decided in
REFERENCES:
patent: 4445182 (1984-04-01), Morita et al.
patent: 4490781 (1984-12-01), Kishi et al.
patent: 4723203 (1988-02-01), Kishi et al.
Translation of 54-82580 Japan 6/30/79.
Translation of 52-127687 Japan 10/26/77.
Kawamura Hideaki
Matsumura Teruyuki
Mineshige Takahiko
Fanuc Ltd
MacDonald Allen
LandOfFree
NC data creation method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with NC data creation method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NC data creation method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-910386