Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1992-04-09
1994-01-11
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
318570, 318569, 36447422, 36447426, G06F 1132
Patent
active
052784797
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a tool path drawing method, and more particularly, to a tool path drawing method in which a tool path based on the machining conditions and a tool path based on a machining drawing, both associated with a part program for three-dimensional machining, are simultaneously drawn so that the movement of a tool can be easily confirmed.
2. Description of the Related Art
In originating NC data of a machining program using an automatic programming apparatus, an operator enters a part program, prepared with reference to a machining drawing, in the programming apparatus, whereupon the programming apparatus automatically originates the NC data on the basis of the input part program. In this automatic programming, as is generally known, a tool path associated with the originated NC data is drawn on the display screen of the programming apparatus in order that the operator can check the part program for propriety. When using a program associated with three-dimensional machining, e.g., machining on the peripheral surface of a cylindrical workpiece, according to a conventional tool path drawing method, a tool path on a three-dimensional work surface, e.g., a cylindrical surface, is drawn. According to another conventional tool path drawing method, moreover, a tool path obtained by developing the tool path associated with the three-dimensional machining on a plane is drawn.
It is difficult, however, to confirm the movement of a tool on the basis of only one of the tool paths, one on the three-dimensional work surface and one developed on the plane, and the propriety check of the part program required has been laborious.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a tool path drawing method which facilitates confirmation of the movement of a tool associated with three-dimensional machining.
In order to achieve the above object, a tool path drawing method according to the present invention comprises: three-dimensionally drawing a tool path associated with three-dimensional machining on a display screen in accordance with NC data originated on the basis of a part program for three-dimensional machining; and drawing another tool path, obtained by developing the aforesaid tool path on a plane, on the same display screen at the same time with the drawing of the tool path associated with the three-dimensional machining.
According to the present invention, as described above, the tool path associated with the three-dimensional machining and the second tool path obtained by developing it on the plane are simultaneously drawn on the same display screen. Accordingly, an operator can easily confirm the tool movement with reference to both the three-dimensional tool path based on the actual machining conditions and the developed tool path on the plane based on a machining drawing. Thus, the part program for three-dimensional machining can be prepared quickly and accurately, so that the NC data originated on the basis of the part program is subject to no or less errors.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a diagram for illustrating a tool path drawing method according to one embodiment of the present invention;
FIG. 2 is a block diagram showing an automatic programming apparatus for carrying out the tool path drawing method of FIG. 1; and
FIG. 3 is a flow chart showing the operation of the programming apparatus of FIG. 2.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to FIG. 1, a tool path drawing method according to one embodiment of the present invention will be described.
First, NC data is automatically originated in the conventional manner on the basis of a part program for three-dimensional machining, e.g., a part program used in grooving the peripheral surface of a cylindrical workpiece, and the originated NC data is executed. Based on NC data associated with a figure definition statement, moreover, a workpiece FIG. 1 indicative of the cylindrical workpiece is three-dimensionally drawn in
REFERENCES:
patent: 4521860 (1985-06-01), Kanematsu et al.
patent: 4530046 (1985-07-01), Munekata et al.
patent: 5010502 (1991-04-01), Diebet et al.
patent: 5075866 (1991-12-01), Goto et al.
patent: 5126646 (1992-06-01), Fujita et al.
Matsunaka Toru
Seki Masaki
Takegahara Takashi
Fanuc Ltd.
Shoop Jr. William M.
Sircus Brian
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