JPS62176731A - Uniform raw material determination method on automatic programming for lathe - Google Patents

Abstract

PURPOSE:To determine uniform raw material shape without adding excess thickness to raw material part and a part at which manufacturing shape is designated by recognizing shape set data and manufacturing shape according to a uniform raw material data set part. CONSTITUTION:Set data, etc. input from a keyboard 1 is transferred to a control signal CS an input and output control part 3, shape setting is performed in a uniform raw material set part 4 and shape set data SD is output. And a raw material shape formation part 5 forms uniform raw material shape by means of recognizing manufacturing shape on the basis of the data SD, raw material shape data DAT is output in order to require a tool trace as a part of an NC program and at the same time input in a raw material indication part 6. This indication data DD indicate raw material shape in CRT 2 through an input and output control part 3. Accordingly, uniform raw material shape can be determined, productivity is good and programming can be performed without adding excess thickness to a part which remains in raw material in manufactured shape and another part at which manufacturing shape is not designated in a manufacturing shape region.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a uniform material method for determining tool trajectories in automatic programming systems for lathes.

(Technical background of the invention and its dark problems) When processing materials using an NCC&I (1-control gM) lathe, a machine program is first required. One of the criteria for the quality of a programming system is whether it moves well.

In recent automatic programming for lathes, a system has been put into practical use whose purpose is to input a machining shape or a material shape in an interactive manner, finally obtain a cutting trajectory, and generate an NC program. In such a programming system, a common method for determining a uniform I material shape is to generate a material shape by adding a certain amount of extra thickness to the added shape.

However, with this type of Buno method, parts that do not need to be added, such as parts where the material is specified as it is in the added shape, or jump-shaped parts where no machining shape is specified in the machining shape area, etc. This means that extra material is added, so it is necessary to specify the starting point and end point of a straight line or circular arc for each point, which requires a large amount of data to be input and is also complicated. There were drawbacks such as:

(Objective of the Invention) The present invention has been made based on the circumstances as described in -1-, and an object of the present invention is to specify the processing shape when specifying a uniform material for the processing shape input at once. The purpose is to provide uniformity/material determination in automatic programming for lathes, which can be input easily by considering.

(Summary of the Invention) The present invention relates to a method for determining a uniform material in automatic programming for a lathe in which a uniform material is determined by inputting shape data in an interactive manner.Shape settings set by a uniform material data setting section By recognizing the data and machining shape, it is possible to create a uniform material without adding extra thickness H, H to the parts where the raw material is specified in the machining shape or the part where the machining shape is not specified in the machining shape area. This allows the shape to be determined.

(Example of Light II) Figure 1 shows this! This is a block diagram showing an embodiment for realizing the above, in which when setting data etc. are input from the keyboard l, it is converted into a predetermined control signal C8 by the human output control unit 3 connected to this keyboard l, and this Control signal C
5 is uniform material data, which is input to the role determining section 4. The uniform material data setting unit 4 sets the shape from the control signal C8,
Output shape setting data Sn. The material shape generation unit 5 inputs this shape setting data SD, generates a uniform material shape by recognizing the machining shape based on this data SO, outputs material shape data DAT, and outputs the material shape data DAT as part of the NG program. It is ultimately used to find the tool path. The material shape data T is also input manually to the material display section 6, where it is output as display data DO to be displayed on the screen. This display data 70 is input to the input/output control section 3, and is converted into data for controlling the display of the CRT 2, so that the shape of the material is displayed on the CRT 2 connected to the input/output control section 3.

The operation of such a configuration will be explained with reference to the flowchart in FIG. The flowchart shown here forms part of the NC program creation.
This flowchart is performed in an interactive manner, and starts when the uniform material is selected from the material shape designation menu.

First, a starting point of a shape element is determined, and a shape element search is performed from this element start point (steps Sl, S
2), if this element can remain as the material, proceed to step S4, if this element is the starting point (if n = 0), skip to the next step S+2, and if it is not the starting point, proceed to the previous step Close the shape at the end of the element (step 53~
S5).

However, if this processed shape element does not remain as a material in step S3 of j-, it is then determined whether this element is a jump shape (step S6), and if it is a jump shape, the process proceeds to step S4; if it is not a jump shape, The process proceeds to step S7, and if the element in question is not the start point in step S7, and the element immediately before it is neither a raw material nor a jump shape, the end point of the element in the straight line Iγi and the start point of the current element are Find the intersection (step S9)
, Furthermore, if rounding is specified for this element, find the intersection between these two elements and proceed to the next step (Step 5IO),
If the element is the starting point in step S7, or if the previous element in step S8 is the same material or has a jump shape, this e
Close the starting point shape of A (step 5ll) and proceed to the next step 1. Then, when all of the above steps are completed (step 513), these set "argon elements are displayed on the CRT 2 as a graphic display C ( Step 514
).

Next, the operation shown in this flowchart will be explained according to the specific example shown in FIGS. 3 and 4. FIG. The processing drawing is shown, and the same figure (B) shows machining allowance = j, corner R
= Material shape when r? show. In the finishing drawing,
The material shape (the same figure (B
)), no extra meat is needed. and.

Extra meat is required for parts that require processing.

Furthermore, if corner R is specified, the corners of each element are rounded. In other words, for elements that do not need to be machined in the siding drawing, there will be no extra thickness, and for elements that need to be machined, by specifying "total allowance = t", the thickness of the extra wall will be t, and the material will be The corners of the shape are rounded with radius r by specifying "corner R=r".

Regarding the above specific example, Fig. 4 (A) shows a display example and input method until the uniform material shape is determined in an interactive manner.
, (B).

The finished machining shape is displayed in FIG. 5A, which is graphically displayed when a uniform material is selected from among the selections for specifying the material shape described above. here,
When the starting point of the shape element is specified, PO is displayed, and at the same time, the system waits for the input of the amount of excess thickness (horizontal margin) and the amount of rounding (corner radius). When these two values are manually calculated, the calculations shown in the double flowchart are automatically performed, and the canonical form (standard form) of the material shape is determined. As a result, the shape of the material as shown in FIG. 4(B), the specified input amount of extra thickness, and the rounding softness are displayed graphically.

Figures 5 (A) and (B) are shown in Figure 5 (A).
This is another specific example showing the shape of the material ((B) in the same figure). As in the previous example, the excess thickness and rounding Jll are specified, and among the shape elements, the jump shape element JUMP is shown as an example.

(Modified example of the invention) In Theory 11 above, one type each is applied to the amount of excess thickness and rounding as applied to the uniform material shape, but it can also be applied when specifying multiple types. be.

(Effects of the Invention) As described above, according to the present invention, a part where the machining shape is specified to be left as is, or a jump shape part where the machining shape is not specified in the weighted shape area is approved. , uniform
Since the material shape can be generated, it is possible to automatically create the material shape without the need to manually set the starting point and ending IJA for each individual tJ.It is very easy to input and allows for highly productive programming. can.

[Brief explanation of drawings]

1st (ffl is a block diagram showing one embodiment for realizing the present invention, 2nd [ffl is a flowchart for explaining an example of its operation, FIGS. 3(A), (B), and 5th
4(A) and 4(B) are diagrams showing an example of a finishing process and the shape of a material, and FIGS. 4(A) and 4(B) are diagrams showing an example of a graph ink display. l...Keyboard, 2...CRT, 3...Input/output control section, 4...Uniform material data setting section, 5...Wheat material shape generation section, 6...Material display section. Applicant's agent Yu Yasugata Mitsuishi 1 Figure 4 Figure 3 Figure (A). (B) Figure 5

Claims (1)

[Claims] In the uniform material determination method in automatic programming for lathes, which determines the uniform material by inputting shape data in an interactive format, by recognizing the shape setting data and machining shape set by the uniform material data setting section, it is possible to determine the machining shape. The feature is that it is possible to determine a uniform material shape without adding extra thickness to parts where the material is specified as it is or where no machining shape is specified in the machining shape area. A method for determining uniform material in automatic programming for lathes.