Part profile input method

Details Part profile input method Part profile input method

1988-12-02

1990-02-13

MacDonald, Allen

Boots, shoes, and leggings

36447426, 36447427, G05B 19403

Patent

active

049012207

DESCRIPTION:

BRIEF SUMMARY
DESCRIPTION

1. Technical Field
This invention relates to a part profile input method and, more particularly, to a part profile input method in an NC data creating apparatus in which a part profile is specified by inputting profile elements of a part using arrow keys and NC data are created to perform machining in accordance with the specified part profile.
2. Background Art
An automatic programming system is available in which a conversational display and a function key (soft key) display are each presented in accordance with each step of a plurality of data input steps, a function key (soft key) conforming to a prescribed function and appearing on the function key display is pressed to thereby execute processing corresponding to the function, and an NC program is prepared using data inputted while referring to the conversational display. For example, see U.S. Pat. No. 4,490,781 (title: System and Method for Producing Numerical Control Information, registered on Dec. 25, 1984).
An automatic programming system of this kind, which will be described with reference to FIG. 7, successively displays predetermined prompt images (the conversational display) on a display screen in accordance with the following steps: next); position; the same tool; and keyboard. Finally, an NC program(NC data) is created using all of the entered data.
In the part profile input step (the seventh step) performed by this automatic programming system, a prompt (ES =) calling for a part profile element is displayed on the display screen, as shown in FIG. 8. In response to this prompt, arrow keys (.uparw., .fwdarw., .dwnarw., .rarw., , , , , , ,), a thread-cutting key, a chamfering key (C key), a rounding key (R key), a grooving key and a corner-removal key, which are provided on a keyboard, are operated in accordance with the part profile while a design drawing is observed. The part profile is thus inputted Whenever a single part profile element is inputted using an arrow key, a prompt calling for the dimensions of this element is displayed. In response to this prompt, dimensions taken from the design drawing are inputted, whereupon profile element symbols PFS and graphic images PFG of these profile elements appear on the display screen.
For example, when linear elements are inputted by pressing the arrow keys indicated by .uparw., .fwdarw., .dwnarw., .rarw., , , , , prompts appear calling for the X coordinate (X.sub.E) of the end point of the straight line, the Z coordinate (Z.sub.E) of this end point, whether or not this straight line contacts the preceding profile element or the next profile element, the angle which the straight line forms with the Z axis, etc. The dimensions written on the drawing are entered in response to these prompts. However, when the prescribed dimensions are not written on the drawing (as in the case of the angle formed with the Z axis, for example), this input is not required.
When a circular arc is inputted by pressing the arrow keys indicated by and , prompts appear calling for the X and Z coordinates (X.sub.E,Z.sub.E) of the end point of the circular arc, the X and Z coordinates (X.sub.C,Z.sub.C) of the center of the circular arc, the radius R of the circular arc, and whether the arc contacts the preceding profile element or the next profile element. The dimensions written on the drawing are inputted in response to these prompts.
When chamfering is inputted by the C key, a prompt calling for the amount of chamfering appears. When rounding is inputted by the R key, a prompt inquiring about the radius of rounding is displayed. In response, the dimensions are entered in similar fashion.
When inputting of all profile elements is completed, all of the profile element symbols PFS of the part profile and the overall part profile figure PFG are displayed on the display screen.
Corner portions are defined between adjacent profile elements except in cases where the two profile elements are in contact. These corner portions can be broadly classified into outside corner portions and inside corner portions.
When a ch

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