Boots – shoes – and leggings
Patent
1986-12-15
1988-12-27
Ruggiero, Joseph
Boots, shoes, and leggings
82 2B, 318568, 364192, 36447421, G06F 1546, G05B 1918
Patent
active
047945141
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to an NC program editing method for efficiently creating NC programs of a four-axis lathe having two tool rests by a CNC (computer-controlled numerical control unit) for lathes.
BACKGROUND ART
An NC for controlling a four-axis lathe is applied to lathes having four independent drive shafts for operating two tools rests independently so that turning work can be performed simultaneously by the two tool rests. The NC can be applied to a lathe of this type in which a single workpiece is secured to a single spindle for being machined by the two tool rests simultaneously, or to a lathe of this type in which two workpieces are respectively secured to two spindles for being machined by respective tool rests.
Frequently, in order to edit the NC program for such a four-axis lathe, the program once created is temporarily registered in a memory and the program is then modified by using an MDI (manual data input) unit and a CRT (display unit). FIG. 2 illustrates an example of an MDI/CRT panel 10 used when a program is edited in this manner. In the FIGURE, a menu picture on a CRT character display turned on and off by a power on button 11a and power off button 11b has a next key 12 for advancing the page of the display, ten soft keys 13a-13j, and a return key 14 for turning back a page. Provided at the side of the screen is an MDI comprising a mode selection key 15, a shift key 16, a tool rest selection key 17, data input keys 18 and symbolic keys 19.
Conventionally, to modify an NC program using an MDI/CRT 10 of this type, first a menu reading "Machining Definition", which decides the machining sequence and type of machining, is taken from a buffer and displayed on the CRT. For example, by utilizing a soft key designating "Correction", a machining display of the step requiring modification is selected and NC data are inputted anew.
In order to raise machining efficiency when creating NC programs that make it possible to perform machining simultaneously by two tool rests, it is necessary to adjust the machining speed between the NC programs edited for each tool rest or to effect an adjustment by resetting peripheral speed, which is defined by the menu "Machining Definition", in such a manner that the machining sequences are altered or executed simultaneously. However, to effect program editing by utilizing the menu "Machining Definition" in the prior art, considerable skill is required and it is difficult for a beginner to perform program editing efficiently.
The present invention has been devised in view of the foregoing points and its object is to provide an NC program editing method for a four-axis lathe in which modification of machining speed, resetting of machining sequence and the like can be performed with ease by using the soft key functions of an MDI/CRT.
SUMMARY OF THE INVENTION
The present invention provides a method of editing NC programs of a four-axis lathe having two tool rests. The method includes a machining definition step of defining machining processes by deciding a machining sequence and a type of machining for each tool rest, a process display step of displaying a defined process together with predetermined NC data classified by tool rest, a step of resetting machining sequences of machining types capable of being performed simultaneously by both tool rests, and a step of modifying machining speed in said machining definition. A menu "NC Data Creation" is displayed after the menu "Machining Definition", a machining process which has already been defined is displayed, classified by tool rest, on the initial picture reading "NC Data Creation", editing of an S (spindle function) code, editing of processes and the like are performed on the display screen, and an M (miscellaneous function) code for each tool rest is outputted, thereby creating two NC programs conforming to the edited processes.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a view for describing a menu illustrating an embodiment of the method of the present invention,
FIG. 2 is
REFERENCES:
patent: 4092720 (1978-05-01), Carey
patent: 4558419 (1985-12-01), Kanematsu et al.
patent: 4571670 (1986-02-01), Kishi et al.
patent: 4586125 (1986-04-01), Takagawa
patent: 4680719 (1987-07-01), Kishi et al.
Hideaki Kawamura
Iwagaya Takashi
Matsumura Teruyuki
Mineshige Takahiko
Fanuc Ltd.
Ruggiero Joseph
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