Multiple-view hole shape display method

Details Multiple-view hole shape display method Multiple-view hole shape display method

1990-03-05

1991-12-10

Harkcom, Gary V.

G06F 1562

Patent

active

050724134

DESCRIPTION:

BRIEF SUMMARY
DESCRIPTION

1. Technical Field
This invention relates to a multiple-view hole shape display method and, more particularly, to a multiple-view hole shape display method in which the shapes of holes in a part are displayed in the form of multiple views on a display screen using hole shape data.
2. Background Art
In order to check hole shape machining data obtained by automatic programming, there are cases where a part and the shapes of holes therein are displayed in the form of multiple views (e.g., a plan view and side or front perspective projection views) on a display screen using the shape data. In the plan-view display, the shapes of the holes are displayed in display colors and display patterns which differ depending upon differences in hole depth. In the display of a front perspective projection view or a side perspective projection view, hole shapes are displayed in the same color and using the same pattern irrespective of the depths of the holes.
Consequently, as shown in the multiple views of FIG. 5, the shapes of holes H1, H2, H3 in the plan view PLF are displayed in distinguishable form using display colors and display patterns which differ depending upon differences in hole depth. In the front view FRF, however, only a front hole shape H1' of the hole H1 of greatest depth is displayed using a prescribed color and pattern.
In other words, if holes overlap in the conventional front perspective projection view or side perspective projection view, only the front shape or side shape of the deepest hole is displayed. A problem that results is that the relationships among the hole depths cannot be distinguished. Examples of the display patterns are a painted-out pattern, a pattern of slanting lines rising from left to right, a pattern of slanting lines rising from right to left, a cross. hatched pattern and a parallel-line pattern.
Accordingly, an object of the present invention is to provide a multiple-view hole shape display method through which the relationships among hole depths can be distinguished even if the shapes of the holes overlap one another.


DISCLOSURE OF THE INVENTION

The invention provides is a multiple-vew hole shape display method in which the shapes of holes in a part are displayed in the form of multiple views on a display screen using hole shape data. In this multiple-view hole shape display method, the shapes of holes are displayed using display colors and display patterns which differ depending upon hole depth. In a case where hole shapes overlap one another in a side view or front view of the holes, the shapes of shallower holes are displayed preferentially on top of the shapes of deeper holes. By adopting such an arrangement, the relationships among the hole depths can be distinguished with ease.


BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic explanatory view of the present invention;
FIG. 2 is a block diagram of a graphic display system according to the present invention;
FIG. 3 is a flowchart of processing according to the present invention;
FIGS. 4(a)-(f) are an example of a multiple-view display according to the present invention; and
FIG. 5 is an explanatory view of an example of the prior art.


BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a schematic explanatory view of the present invention, in which the reference letters WK represent a workpiece, PLF a plan view, FRF a front view and SDF a side view. The symbol Hi (i=1, 2, . . . 4) denotes a plan view of a hole, the symbol Hi denotes a front perspective projection view of a hole, and the symbol Hi" denotes a side perspective projection view of a hole. The symbol PAi represents a display pattern. A perspective projection view is a view in which the contours of holes, grooves and the like in an object are displayed along with the external contour of the object.
In the present invention, the plan views Hi of the holes, the front perspective projection views Hi' of the holes and the side perspective projection views Hi" of the holes are displayed using display colors and display patterns PAi (i=1, 2,

REFERENCES:
patent: 4791579 (1988-12-01), Kranitzky
patent: 4875097 (1989-10-01), Jackson
patent: 4933865 (1990-06-01), Yamamoto et al.
patent: 5010502 (1991-04-01), Diebel et al.

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