JPH02199505A - Method of forming working program for cylindrical groove shape - Google Patents

Abstract

PURPOSE:To easily form a working program by defining a groove shape corresponding to the one-peripheral side face of a work on a required plane by means of a conversational format. CONSTITUTION:The one-peripheral side face of the work is allowed to correspond to an area 22a in the 0 to 360 deg. angle range of an axis C obtained by linearly developing a rotary shaft on the plane of a rectangular coordinate system formed by the developed axis C and the longitudinal axis 2 of a cylinder. When data are conversationally inputted by using a coordinate value in the rectangular coordinate system to define the shape of the groove and the working program of a tool 24 is formed as numerical data based upon the definition, the working program of the shape of cylindrical groove can easily be formed by the method using the two-dimensional coordinate system.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for creating a machining program for a cylindrical groove shape for an interactive numerical control device for machining a groove shape on the side surface of a cylindrical workpiece. The present invention relates to a method for creating a machining program for a cylindrical groove shape, which enables the creation of a machining program in an interactive format by making the machining program correspond to a specific region of a plane.

[Conventional technology]

Conventionally, when machining a groove shape on the side surface of a cylindrical workpiece using a numerical control device (CNC), the groove shape was defined using a G code or the like, and a machining program was created.

[Problem to be solved by the invention]

However, in the conventional method, programming is not easy unless the operator has sufficient knowledge of the NC tape format, automatic programming language conventions, etc., and programming of three-dimensional shapes takes a considerable amount of time even for experienced operators.

The present invention has been made in view of these points, and provides a method for creating a machining program for a cylindrical groove shape, which allows the creation of a machining program in an interactive format by making the side surface of a workpiece correspond to a specific area on a plane. The purpose is to provide.

[Means to solve the problem]

In the present invention, in order to solve the problem of the upper rudder, in a method for creating a machining program for a cylindrical groove shape for an interactive numerical control device that machines a groove shape on the side surface of a cylindrical workpiece, an axis in which the rotation axis is expanded linearly is used. The circumferential side surface of the workpiece is made to correspond to an area within an angle range of 0° or more and less than 360° of the developed rotational axis on a plane of an orthogonal coordinate system constituted by the longitudinal axis of the cylinder, and the There is provided a method for creating a machining program for a cylindrical groove shape, characterized in that the groove shape is defined by inputting required data in an interactive format using coordinate values of an orthogonal coordinate system, and a machining program is created.

(Operation) On a plane consisting of the linearly developed axis of the rotational axis and the longitudinal axis of the cylinder, and at least 0 degrees 3 of the developed rotational axis.
The groove shape is defined interactively by making the side surfaces of the workpiece correspond to a region having an angle of less than 60 degrees. Machining programs can be easily created in a two-dimensional coordinate system and in an interactive format.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. In the following description, the rotation axis will be referred to as the C axis, and the axis in the longitudinal direction of the cylinder will be referred to as the Z axis.

FIG. 4 is a perspective view showing an example of machining of a cylindrical groove shape. In the figure, the machining shape 2o has a predetermined width on the side surface 22 of a cylindrical workpiece 2■ with a length of 65 mm and a cylindrical diameter of 2
The groove shape 23 has a depth of 7 mm. The groove shape 23 controls the workpiece 21 while controlling the tool 24 in the Z-axis direction.
It is manufactured by rotating 720° (2 rotations) in the C-axis direction.

Next, a method for creating a machining program for this groove shape 23 using the method for creating a machining program for a cylindrical groove shape according to the present invention will be described.

FIG. 1(a) is a conceptual diagram of one embodiment of the present invention;
This corresponds to a diagram in which the processed shape 20 in the figure is developed with respect to the side surface 22. The horizontal axis of the coordinate system in this figure is the Z axis, and the unit of coordinate values is rrim. The vertical axis is a linear expansion of the C-axis, and the units of coordinate values are angles. Region 22a corresponds to side surface 22 in FIG.

FIG. 1(b) is a table showing a procedure for creating a machining program for a cylindrical groove according to an embodiment of the present invention. Definition step 1 consists of steps STI to ST9, and shape constituent elements 2 and numerical data 3 are set for each step. This setting is performed in such a way that the operator answers questions displayed on the display screen of the interactive numerical control device each time by operating predetermined shape symbol keys and numerical keys. Hereinafter, with reference also to FIG. 1(a), the operator's operation procedure will be described in detail in accordance with the order of the definition steps.

(STI) In response to the shape component question, set the shape component in the downward direction.

Next, in response to questions about the C and Z coordinates of the starting point and the diameter of the cylinder, set values of 0°, 20 mm, and 27 mm, respectively.

In response to the question about the cutting direction parameter, rlJ is set. Here, the parameter r1g means cutting on the left side with respect to the advancing direction of the shape component. In addition, when cutting on the right side or on the element with respect to the direction of movement of the shape component, the value of the parameter is set to tr-14.
Or set it to "0". In response to the question about the end point coordinates, the C coordinate is set to 1206.

The machining path defined by the operations up to this point is shown in Figure 1 (
This is a passage starting from point Pa in a), placing the tool 24 at the position shown in the figure, and moving to point Pb.

rsT2) For the shape component question, set the shape component of roundness, and for the radius question, set 10 mm.

(Sr1) For the question of shape constituent elements, set the element in the lower left direction. For the question of end point coordinates, set the Z coordinate to 50
Set the mm and C coordinates to 240°.

This operation defines a machining path in which the tool 24 is moved to point Pc after chamfering with a radius of 10 mm at point Pb.

(Sr4) For the shape component question, set the shape component of roundness, and for the radius question, set 10 mm.

(Sr5) For the shape component question, set the shape component in the downward direction. For the question of end point coordinates, set the C coordinate to 480°.

This operation defines a machining path in which the tool 24 is moved to point Pd after chamfering with a radius of 10 mm at point Pc.

(Sr6) For the shape component question, set the shape component of roundness, and for the radius question, set 10 mm.

(Sr7) In response to the shape component question, set the shape component in the lower right direction. Regarding the question of end point coordinates, set the Z coordinate to 20 mm and the C coordinate to 600°.

This operation defines a machining path in which the tool 24 is moved to point Pe after chamfering with a radius of 10 mm at point Pd.

rsT8) For the shape component question, set the shape component of roundness, and for the radius question, set 10 mm.

(Sr9) In response to the shape component question, set the shape component in the downward direction. For the question of end point coordinates, set the C coordinate to 720°.

This operation defines a machining path in which the tool 24 is moved to point Pa after chamfering with a radius of 10 mm at point Pe.

FIG. 2 shows the display screen of the interactive numerical control device after performing the above operations. In the figure, the shape constituent elements 2 are displayed on the display screen 4 according to the set order, and the area 2
A machining passage 23a corresponding to the groove shape 23 is drawn inside 2a.

FIG. 3 is a schematic diagram of the hardware configuration of an interactive numerical control device for implementing the method of creating a machining program for cylindrical groove shapes according to the present invention. The processor 11 controls the entire interactive numerical control device according to a system program stored in the ROM 12.

EFROM or EEFROM is used as the ROM 12. A DRAM or the like is used as the RAM 13, and various data and input/output signals are stored therein.

The nonvolatile memory 14 has battery-backed C
MO3 is used and stores parameters, pitch error correction amount, tool correction amount, etc. that should be retained even after the power is turned off.

The graphic control circuit 15 converts the digital signal into a display signal and supplies it to the display 16. Display 16 is CR
A T or liquid crystal display device is used to display the position of each axis, the status of input/output signals, parameters, etc. The operation panel 17 includes a keyboard and the like, and is used for inputting various data or operating the machine tool 18. These are connected by a bus 29.

Although the above explanation uses an interactive numerical control device, the method for creating a machining program for cylindrical grooves according to the present invention can also be applied to an automatic program creation device. [Effects of the Invention] As explained above. In the present invention, on a plane composed of an axis obtained by expanding the rotation axis into a linear shape and an axis in the longitudinal direction of the cylinder,
In addition, the side surface of the workpiece is made to correspond to an angle range of 0° or more and less than 360° of the unfolded rotation axis, and this region is displayed on the display screen of the interactive numerical control device to interactively determine the groove shape. Because it is defined, machining programs can be easily created even by non-skilled operators.

In addition, the coordinate values of the developed rotation axis are expressed in angle units, and machining paths with rotation angles of 360° or more are also drawn in one area, making it easy to correspond to the side surface of the actual workpiece. Program creation time is reduced.

[Brief explanation of the drawing]

FIG. 1(a) is a conceptual diagram of a method for creating a machining program for a cylindrical groove shape according to an embodiment of the present invention, and FIG. 1(b) is a conceptual diagram of a method for creating a machining program for a cylindrical groove shape according to an embodiment of the present invention. A table showing the steps of the creation method, FIG. 2 is a display screen of an interactive numerical control device according to the method for creating a machining program for a cylindrical groove shape according to an embodiment of the present invention, and FIG. 3 is a diagram showing the steps for implementing the present invention. A schematic configuration diagram of the hardware of the interactive numerical control device, FIG. 4 is a diagram showing an example of machining of a cylindrical groove shape. 2-・- 4-・-・ 2a 3a -・Definition Step - Shape Component - Numerical Data/Display Screen Processor Work Side Groove Shape Area Machining Passage Tool Patent Applicant Fanuc Co., Ltd. Agent Patent Attorney Takeshi Hattori No. 1 Figure (0) Figure 1 (b) Figure 4

Claims (4)

[Claims] (1) In the method of creating a machining program for a cylindrical groove shape for an interactive numerical control device that processes a groove shape on the side surface of a cylindrical workpiece, the rotary axis is linearly expanded and the axis in the longitudinal direction of the cylinder is A side surface of one circumference of the workpiece is made to correspond to an area within an angle range of 0° or more and less than 360° of the developed rotation axis on a plane of the constructed orthogonal coordinate system, and using the coordinate values of the orthogonal coordinate system, A method for creating a machining program for a cylindrical groove shape, characterized in that the groove shape is defined by inputting required data in an interactive format, and a machining program is created. (2) The program for machining a cylindrical groove shape according to claim 1, characterized in that the region is displayed on a display screen, and a machining path is drawn in the region based on the input data. How to make. (3) The method for creating a machining program for a cylindrical groove shape according to claim 1, wherein the coordinate values of the developed rotation axis are expressed in units of angle. (4) A cylindrical groove shape according to claim 1, characterized in that the groove shape in a range corresponding to an angle of the rotation axis of less than 0 degrees or more than 360 degrees is displayed superimposed on the region. How to create a machining program.