JPS58149507A - Nc automatic programming system - Google Patents

Abstract

PURPOSE:To facilitate the automatic processing due to a numerical control machine tool, by giving a signal, which controls a shape, besides coordinates of space curve data to a computer as an input signal to make it possible to generate automatically NC commands. CONSTITUTION:Plural coordinates 18 of space curve data a16 and b17 are given as the input signal. An NC command which controls a numerical control machine tool 2 on a basis of this signal is operated as a signal which is outputted to a servomotor so that the tool is moved to a target value Cij19. Shape control signals e1 and e2 are superposed to lengths DELTAp20 and DELTAq21 from coordinates 18 of the input signal, and obtained signals are weighted to coordinates 18 of the input signal, thereby determining the target value Cij. Consequently, the NC command outputted to the servomotor is controlled freely by shape control signals e1-en 15.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a No. automatic programming method, and particularly a No. automatic programming method suitable for automatically creating a No. command when automatically machining a curved surface shape such as a mold using a No. machine tool. It concerns an automatic programming method.

Conventionally, this type of No automatic programming method has a first
The system shown in the schematic diagram of FIG. 2 is known, and uses the coordinates of the operating curve data and reference curve data having the shape shown in FIG. 2 as input signals.

In Figure 1, (1) is a computer, (2) is a numerically controlled machine tool, (3) is a keyboard for inputting input data, (4) is a computer (OPU of 11), (5) is a computer ( 1) input circuit. (6) is the output circuit of the computer fl), (7) is the program memory inside the computer + (81
Display output device for the calculation result of HOP u (a), (9)
is the input signal from the keyboard (3), α (1 is the input signal from the computer (
1) is the output signal of 0. In the schematic configuration shown in FIG. 1, the input signal (9).

First, the operation of the conventional method for providing the coordinates of the operating curve data DOQI) and the reference curve data BOQ21 having the shapes shown in FIGS. 2(a) and 2(b) will be described. First, as the input signal (9), the operating curve data (
11) and the reference curve data (I) using the keyboard (
3) to the computer (1), the operating curve 1 (11-a) shown in Fig. 2(b) moves and changes along the reference curve α force to the other operating curve 2 (11-b). When calculating NC commands for machining, a parallel state is always maintained to create a curved surface shape. A program for automatically calculating this curved surface shape is stored in advance in the memo IJ-(71).
When input signal (9) is given to computer (1).

A No command for machining the curved surface shape using the fully numerically controlled machine tool (2) is automatically calculated and created.

Although FIG. 2 shows a case in which the operating curve αB maintains a parallel state along the reference curve a, it may also maintain a radial state or a vertical state. In addition, the number of curves input as input signals is the operating curve Qll and the reference curve α.
1 each. -It is common to have two.

The conventional No. automatic programming method explained based on FIGS. 1 and 2 uses the operating curve tJll given as the input signal (9) and the reference curve α2 (the former becomes the latter).
State 1: For example, calculate the curved surface shape created when moving while maintaining parallel, radial, and perpendicular. 1. NC for processing
I am trying to create a command, and the data given as the input signal (9) has only a single strength, and I want to create a curved surface shape that strengthens the shape of a specific curve from among these curve data, or It was impossible to calculate and output an NC command to a weakened curved surface shape.

The present invention addresses the above-mentioned problem VC@, and solves the problem by giving a signal for controlling the shape to the computer in addition to the coordinates of the space curve data as an input signal.
The purpose is to provide an automatic No programming method that automatically calculates a curved surface shape that strengthens or weakens the shape of a specific spatial curve over the entire curved surface and automatically creates a No command for processing. .

The present invention will be explained in detail below. FIG. 3 is a conceptual diagram for explaining a simple embodiment of the present invention, and the same parts as in FIG. 1 are given the same reference numerals, and the explanation thereof will be omitted. In FIG. 3, the shape control signal Q! 9 is the input to the CRT using the light ben 0■ or the digitizer.
Alpha.

Keyboard +3) K is input, and this signal controls the machining shape.

Next, the control method will be explained based on FIG.

First, as input signals, space curve data a ue and space curve data b (171 multiple coordinates ■α & In the present invention, the target value 01j (19 is calculated as the signal output to the servo motor).

Distance △p(7), △ from coordinate V Qg which is input signal
Superimposing the shape control signal θ++e2 (151 on qQυ)
p×θ1. It is determined by setting ΔqXe2 and weighting this value to the input signal coordinate VQg1.

That is, the No command determines the curved surface shape to be machined.

In other words, the signal output to the servo motor is.

Shape control signal J, θ2. -9. It will be freely controlled by enα4.

By the method explained above, an output signal is created to be sent to the numerically controlled machine tool (2) so that the tool moves to the target value c1, 1α. However, the shape control signal θQ! Target value 0 by 9
1j (II) is displayed on the display device (8), and the results are shown in FIGS. 6 to 10.

The space curve shape data given as the input signal (9) is
As shown in the figure. Here, the space curve data is.

Q4 and c! (2) Since there are two signals, the shape control signal α9 is.

There are two signals: el and θ2. This input space curve data (c) on the X-Z plane is converted to space curve a (
IFA, space curve data on the Z-Y plane (2 is defined as space curve b Q71. Next, use a calculator (11) to calculate △
p×81. △qX82 is weighted to the coordinate ■αS which is an input signal. FIG. 6 shows the shape control signal 81/. 2-1
．． Figure 7 is θ1l, 62=Q, Figure 8 is θ1/θ2
= 1/3, Figure 8 is e1/a2 = 3, Figure 10
The figure is calculated and displayed with weighting set as 61==Q and θ2(0).

In addition, as a method that can achieve all the same effects.

The communication path through which the input signal (9) in FIG. 3 is transmitted to the input circuit (5) may be configured as shown in FIG. 11. In this embodiment, among the coordinates α of the space curve data which is the input signal (9), the coordinate signal of the curve that strongly represents the characteristics of the curved surface shape to be processed is selected by the full switching circuit Q4, and the amplifier circuit (C) Furthermore, when a spatial curve whose characteristics are to be weakened in the processed shape is input, only that signal is selected by the switching circuit Q4) and directly transmitted to the input circuit (5). . As described above, the No. automatic programming method of the present invention allows the creation of No. commands by freely calculating and controlling the curved surface shape of a mold, etc., and facilitates automatic machining using numerically controlled machine tools. This has the effect of making it possible to create a desired shape in a short period of time.

[Brief explanation of the drawing]

Figures 11 and 2 are a schematic configuration diagram and an input signal diagram for explaining the conventional No automatic programming method, respectively;
FIG. 3 is a schematic configuration diagram for explaining the No automatic programming method which is an embodiment of the present invention, FIG. 4 is a schematic diagram showing a shape control method, and FIG. Fig. 11 is an explanatory diagram of the operation and is a diagram for explaining another embodiment.1 In the figures, the same or equivalent parts are denoted by the same reference numerals3.
, (1)...computer, (2)...numerical control machine tool,
(3)...Keyboard, (4)...OP U,
(5+...input circuit, (6)...output circuit, (force/
...Memo IJ, (81...display output, (9)...
・Input signal, (10+...output signal, αD...operation curve, αri...reference white Mj1.(131...light pen, 041...digitizer-1(1!19...
・Shape control signal, θe... Space curve a, Q7)...
Space curve b9α... Coordinate ■, α...Target value Oij
, (A)...distance △I), C1,)...to distance, (two...Z-Y+space curve on curved surface, 231.
...Space curve on Z -X XV- plane, 124)...
・Switching circuit, Cl51... Amplifier circuit representative Shin Kuzuno - Figure 9 Figure 1O

Claims (1)

[Claims] In the No. automatic programming method for machining a workpiece with a numerically controlled machine tool by inputting multiple pieces of space curve data as initial values and calculating nine curved surface shapes, the space curve data to be input in the space curve to be input is If there is spatial curve data that strongly represents the characteristics of the curved surface shape to be processed from the inside, or spatial curve data that has weaker characteristics than relatively thin spatial curve data, specific spatial curve data across the entire 9 curved surfaces. No automatic programming method 0 with t% characteristics as a t% characteristic to calculate and automatically process a shape that strengthens or weakens the shape.