KR101506077B1 - Numerical control programming method for hole machining and apparatus thereof - Google Patents

Abstract

The present invention relates to a method and an apparatus for generating a numerical control program for hole machining that automatically processes a hole selection and designation of a work when generating an NC program for machining an assembled work using a 3D modeling program. In the present invention, a 3D modeling of a work, which is an object in a finished state after being constructed in the 3D CAD program 50, is selected and opened in the display 103 of the CAM system (step S51); A step of acquiring a process template prepared by the operator in advance in the template storage section 105 in accordance with the instruction and outputting it on the display 103 and selecting a necessary hole processing process among the output process templates Step S52); A step of selecting and inputting a machining surface on which a hole to be machined exists in the 3D modeling of a work opened on the display 103 (step S53); A step of searching a hole existing on the machining plane input to the machining plane input unit 108 according to the machining plane selection and specifying a machining method for the hole based on the geometry information and the attribute of the found hole (step S54); A process of inserting and inserting a process matching a specific hole processing method in a processing step of a template (step S55); (Step S56) of specifying and specifying a machining process including a hole machining process for the work, and then calculating and generating an NC program for the work including the machining of the holes designated according to the program creation command of the worker (step S56) .

Description

TECHNICAL FIELD [0001] The present invention relates to a numerical control program for a hole machining,

The present invention relates to the generation of a numerical control program, and more particularly, to a method and apparatus for generating an NC program for machining a work (work) to be formed by using a 3D modeling program, The present invention relates to a method and an apparatus for numerical control program generation for hole machining for automatically processing a hole selection and designation by reading information on a machining pattern and specifying a machining method for the hole and inserting it in accordance with the grasped machining process.

CAMTOOL, WorkNC, HyperMILL, Tebis, and others as commercially available CAM (Computer Aided Manufacturing) systems currently used for generating NC programs (or data) for controlling the machining operation of CNC (Computerized Numerical Control) UG CAM, and so on. These commercial CAM systems are widely used in industrial fields with unique characteristics and advantages.

However, these CAM systems have been developed to have general and general functions to cover the processing of various fields or conditions. For this reason, there is a disadvantage in that, when it is applied to a specific field, there is a simple repetitive setting operation or a parameter which must be set even if it is not necessary in the processing field. In addition, when selecting the parameters for the NC program creation, the use of characteristic features of the work or the selection (or setting) methods using the machining attributes are provided at a minimal level, so that troublesome or complicated setting tasks are always involved do.

For example, in JIG processing, various types of holes and planes often occupy more than 90% of the work, and the machining direction should not be limited to the vertical direction but must be machined in various angles and directions.

Particularly, in the hole machining, the tool selection and machining method must be changed according to the size and type of the hole. Therefore, when the NC program is created, the operator selects one hole for each hole in the work drawing formed by the 3D modeling program It is troublesome to check the size and type of the hole and to find and designate the CAM process corresponding to each hole.

Published Unexamined Patent Application Publication No. 2003-0092832

The present invention solves the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for searching a hole of a hole, (Designation) of the hole process of the searched hole is automatically inserted (specified) in the matching process in the template process, and hole selection and designation are automatically performed in the CAM system, And to reduce the defect rate due to the selection error and to improve the working efficiency.

In order to attain the above object, the present invention provides an NC program generating apparatus for a CAM system for controlling a machining operation of a CNC machine, the NC program generating apparatus for generating a numerical control program for hole machining, A control processor that is a processing device that collectively performs control; A display for outputting the 3D modeling of the work, which is the object to be formed, using the 3D CAD program to the screen; A work shape storage unit for storing information on a shape and an attribute of a processed state including a hole of a called work on a display; A process template storage unit for each type of workpiece, in which predetermined machining processes including hole fixation for the workpiece to be machined are set in advance in the CNC equipment; A tool data storage unit in which information on dimensions and attributes of tools including a hole processing tool used in a product to be produced by the CNC equipment is previously entered; A workpiece machining step of acquiring a process template previously created in the template storage unit for each machining type and outputting it to a display when an operator issues a process template calling command to generate an NC program including a hole machining for the called work on the display A template search processing unit; A machining plane input unit for selecting a plane having holes to be machined in the work; A method of searching a hole on a machining surface selected by an operator and specifying a machining method for a hole based on geometrical information and attributes of the hole to be searched, A hole search and process insertion processing unit; And an NC program generation unit for calculating and generating a machining program including hole machining for the work as the operator completes the hole search and the process designation and the operator commands the program creation.

Here, the machining plane input unit is set so that multiple planes in which the machining holes exist can be selected.

A numerical control program generation method for hole machining according to the present invention is a NC program creation method of a CAM system for controlling a machining operation of a CNC machine, the method comprising the steps of: The 3D modeling is selected and opened on the display of the CAM system (step S51); (Step S52) of acquiring a process template prepared in advance by a worker in accordance with a command in a template storage section according to a command, outputting the template to a display, and selecting a required hole processing process among the output template; A step of selecting and inputting a machining surface on which a hole to be machined exists in 3D modeling of a work open on the display (step S53); A step of searching a hole existing on the machining plane input to the machining plane input unit according to the machining plane selection and specifying a machining method for the hole based on the geometry information and the attribute of the detected hole (step S54); A process of inserting and inserting a process matching a specific hole processing method in a processing step of a template (step S55); (Step S56) of specifying and specifying a machining process including a hole machining process for the work, and then calculating and generating an NC program for the work including the machining of the holes designated according to the program creation command of the worker (step S56) .

Here, in the process of selecting and inputting the machining surface (step S53), the 'Select Face' function of the CAM system is used.

According to the method and apparatus for generating a numerical control program for hole machining according to the present invention, the machining process according to the size and type of the hole is made in advance as a template, and then the geometric information and the machining attribute of the holes And the machining method for each hole is specified and the process of the searched hole is automatically inserted into the matching process in the template processing step so that the operator individually selects and confirms the holes to be machined to find and insert a matching process No hole selection and assignment is performed automatically within the CAM system without the need. Therefore, it is possible to minimize the simple repetitive selection work of the operator, reduce the defect rate according to the selection error, and improve the working efficiency.

1 is a diagram showing a configuration of an apparatus for generating a numerical control program for hole machining according to the present invention.
FIG. 2 is a flow chart for explaining a method for generating a numerical control program for hole machining according to the present invention.
3A to 3D are diagrams for explaining an example of a process of generating a numerical control program for hole machining step by step in the CAM system according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a diagram for explaining a configuration of an apparatus for generating a numerical control program for hole machining according to the present invention.

1, the control processor 101 is a processing device provided in a CAM system for collectively performing control for generating a numerical control program for hole machining according to the present invention, The NC program creating unit 102 creates an NC program for the entire work including the machining step of the hole.

The solid model of the work to be machined in the CNC machine is constructed using the 3D CAD program 50. [ (Outputs) the work created through the 3D CAD program 50 to the display 103 such as a monitor or the like of the CAM system, and recognizes the shape of the called work. The operator selects and designates the machining method for various machining parts (holes in the present invention) of the called work.

The work shape storage unit 104 stores information about the shape and attributes of the processed work of the called work on the display 103. [

The processing template-specific processing template storage unit 105 previously inputs specific processing methods (processes) for each type of processing into the CAM system in advance by the operator in the form of template data. In other words, the work to be machined in the CNC equipment is made into a template by defining the process to be processed. For example, in the case of a CNC machine for processing a predetermined jig (s), it is a process template in which a machining tool, a machining method and a step are set by designating all the steps to be applied to the jig (s).

For example, with regard to the hole, the processing method is set differently depending on the size and type (attribute) of the hole. That is, even if the holes have the same size, different properties of holes are naturally set to different processes. As the properties of the hole, for example, a hole that is specified in the design field by the shape and the use of a hole such as a drilling hole, a tap hole, a reamer hole, a counter boring hole, have. Also, even if the shape of the hole is the same, the property is divided again according to the tolerance of the hole (for example, H7, G7, H8, etc.) or the surface roughness.

The tool data storage unit 106 preliminarily inputs information on the dimensions and attributes of tools used in the CNC equipment. In other words, the data of the tools used to machine the products to be produced by the CNC equipment are input in advance.

The workpiece machining process template search processing unit 107 searches the workpiece machining process template template storage unit 105 for the machining type template Obtains the process template, and outputs it to the display 103.

The machining plane input unit 108 is a means for the operator to input a plane on which holes to be machined are present. In the present embodiment, the plane in which the machining holes are present can be selected in multiple ways, thereby making it possible to originally prevent an error that an NC program in a hole having a different direction (for example, a hole not perpendicular to the selected surface) is generated.

The hole search and process insertion processing unit 109 of the machining surface searches for holes existing in multiple machining planes selected by the operator and selects the holes on the basis of the geometry information and the attributes of the searched holes defined by the multiple machining planes (Specified) the process corresponding to the specific processing method in the processing step of the template storage section 105 for each processing type.

The NC program generating unit 110 calculates the machining program for the work as the worker completes the designation of the process from the hole search and designation of the other machining site as described above, The NC program is stored in the NC program storage unit 111.

FIG. 2 is a flow chart for explaining a method for generating a numerical control program for hole machining according to the present invention. FIGS. 3A to 3D are views for explaining an example of a process of generating a numerical control program for hole machining step by step in the CAM system according to the present invention. Please refer to Fig. 1 in parallel.

First, the worker selects 3D modeling of the object in the finished state after construction in the 3D CAD program 50, and opens (calls or outputs) the selected object in the display 103 of the CAM system (step S51 ) (Fig. 3A).

After the operator opens the 3D modeling of the work to be processed on the display 103 and then issues an instruction to call the process template to generate an NC program for the opened work, The process template is acquired and output on the display 103, and the operator selects a desired (used) hole processing process among the output process templates (step S52) (FIGS. 3A and 3B). 3A shows a screen in which a machining process template created as 'drill A' is selected from a process template called by an operator's command. Then, as shown in FIG. 3B, all machining processes for each size (shape) and type (attribute) of the hole are displayed, and the machining process to be set at present is selected from the machining processes. FIG. 3B shows an example in which 'TAP' machining is selected.

Then, the worker selects and inputs the machining surface on which the hole to be machined exists in the 3D modeling of the work open on the display 103 (step S53) (Fig. 3C). For example, in FIG. 3C, when an input button called 'JIG CAM' at the upper right of the screen of the display 103 is pressed, a 'JIG CAM UTILITY' window is displayed and the operator uses the 'Select Face' To select the machined surface.

When the operator selects the machining surface in this way, the control processor 101 controls the hole-search-process inserting processing unit 109 on the machining plane to select the hole (s) in the multiple planes (machining planes) And the machining method for the hole is specified based on the geometric information and the attributes of the searched holes defined by the multiple planes (step S54) (FIG. 3D).

Subsequently, after specifying the machining method for the searched holes, a process matching with the specific machining method is inserted (designated) in the template machining process (step S55) (Fig. 3d).

Referring to FIG. 3D, the operator selects the machining surface as the front surface of the work, searches for the holes existing on the selected machining surface, The method is shown on the display. That is, in FIG. 3D, TAP M10 (DIA = 8.5 4) and TAP M14.0 (DIA = 12.0 2) are found and specified. Here, 'TAP' means a screw (female thread) hole formed by a tap tool, 'M10' means that the nominal diameter of the threaded hole (that is, bone diameter) is 10 mm, 'DIA = 8.5' The diameter of the drill hole (or the diameter of the drill) to be drilled to form the screw hole of the female screw, i.e., the inner diameter of the female screw.

In this case, for the 'TAP M10' process previously set in the template for each processing step, for example, a step of drilling a hole having a diameter of 8.5 mm using a drill having a diameter of 8.5 mm and a step of drilling a hole having a diameter of 25 mm A step of chamfering an 8.8 mm hole and a step of machining a female screw using a 10 mm tap in a perforated 8.5 mm drill hole. Four holes of "TAP M10 (DIA = 8.5 4)" searched in FIG. 3D are automatically assigned to the "TAP_M10" process of the template and two holes of "TAP M14.0 (DIA = 12.0 two) Is automatically assigned to the template 'TAP M14.0'.

After all the machining steps to be performed including the hole machining process for the workpiece are specified and specified, and the operator inputs a program creation command, the NC program for the workpiece including the machining of the designated holes is calculated and generated Step S56). Further, the generated NC program is stored in the NC program storage unit 111. [

The foregoing is a description of certain preferred embodiments of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein, but may be modified and altered without departing from the spirit and scope of the invention as defined in the appended claims.

101: (Numerical control program creation) Control processor
102: 3D CAD program
103: Display
104: Work shape memory unit
105: Process template storage unit for each type of processing
106: Tool data storage unit
107: Workpiece processing template search processor
108:
109: hole search / process insertion processing portion of the machining surface
110: NC program generating section
111: NC program storage unit

Claims (4)

An NC program generating apparatus of a CAM system for controlling a machining operation of a CNC machine,
A control processor (101) as a processing device for collectively performing control for generating a numerical control program for hole machining;
A display 103 for outputting the 3D modeling of the work, which is the object to be formed, to the screen using the 3D CAD program 50;
A work shape storage unit 104 for storing information about a shape and an attribute of a processed state including a hole of a called work in the display 103;
A process template storage unit 105 for each hole processing type in which a machining process according to a shape and an attribute of a workpiece to be machined is set in advance in the CNC equipment;
A tool data storage unit 106 in which information on the dimensions and attributes of a hole processing tool used in a product to be produced by the CNC equipment is input in advance;
When an operator issues a process template calling command in order to generate an NC program including a hole processing for the called work on the display 103, the process template previously created in the template storage section 105 for each processing type is acquired and displayed 103) of the workpiece processing step;
A machining plane input unit (108) outputting on the display (103) so that a worker can select multiple planes in which holes to be machined in the work exist;
The operator searches the holes existing in the multiple planes selected through the processing surface input unit 108 and specifies the processing method for the holes based on the geometrical information and attributes of the holes defined by the multiple planes, A hole search and process inserting processing unit 109 for inserting and inserting a process in a process step of the process template storing unit 105; And
And an NC program generation unit (110) for calculating and generating a machining program including a hole machining operation for the workpiece as the operator completes the hole search and the process designation and instructs the operator to create the program A numerical control program generating device. delete A method of generating an NC program of a CAM system for controlling a machining operation of a CNC machine,
A step of selecting 3D modeling of a work, which is an object in a finished state, constructed and stored in the 3D CAD program 50 according to a program creation command of an operator, and opening the selected 3D modeling on the display 103 of the CAM system (step S51);
A process template prepared by an operator in accordance with a command in advance in a template storage section 105 for each processing type is acquired and output on the display 103 and an operator selects a necessary hole processing step from the output template template (Step S52);
A process 103 for inputting a machining plane input unit 108 for allowing a worker to select a plane having holes to be machined in 3D modeling of a work open on the display 103 Step S53);
The operator searches through the holes existing on the multiple machining planes selected through the machining plane input unit 108 and calculates and specifies the machining method for the holes based on the geometric geometry information and attributes of the holes defined by the multiple planes (Step S54);
A process of inserting and inserting a process in accordance with a specific hole machining method in a machining process set in the process template storage unit 105 (step S55); And
And a step (S56) of calculating and generating an NC program for the work including the machining of the holes designated in accordance with the program creation command of the worker, after specifying the machining process including the hole machining process for the work A method for generating a numerical control program for a hole processing. The method of claim 3,
Wherein a 'Select Face' function of the CAM system is used in the step of selecting and inputting multiple machining planes having holes (step S53).

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