JPS62224550A - Area machining indication system in automatic nc programming - Google Patents

Abstract

PURPOSE:To make it possible to perform machining with the same machining shape factor input once by writing programs without repeating the input of the same machining shape based on the data resistered and stored in a technical and machining data resistration section and input data and shape factor data storing section respectively. CONSTITUTION:A main control section 1 determines the most suitable cutting speed, feed rates, clearance amounts, step feed, and so on for tool material, tool diameter, and workpiece material for each of indicated machining processes based on the input data of tools to be used, cutting diameter, depth, and width, infeed and so on and the cutting data resistered in a technical data resistration section 7. In the next step, when such input process as the shape factor data of each machining process and the repeat of the indication of these data for every shape, machining, and angle of machining face are completed, the main control section 1 processes the data in an input data storing section 6 and shape factor data storing section 10 according to the data in a post processor data storing section 9 and writes an NC part program suitable for a desired NC machine tool. Repeated input of the same shape data can, therefore, be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to an area machining designation method when a machining program is created by an automatic programming function in a numerically controlled (NC) machine tool or an automatic programming device for an NG machine tool.

(Technical background of the invention and its problems) With the development of NC machine tools, a wide variety of processing has become possible. However, there are still many problems in terms of ease of use from the user's perspective, such as ease of creating machining programs.

N using automatic programming system for NG machine tools
When creating a machining program for C, for area machining, machining is often specified by inputting the same machining shape. For example, when chamfering is attempted after milling or pocket machining, the shape of the chamfer is the same as the shape element data input for the pre-processing edge cutter or pocket machining, but conventionally this Duplicate operations such as having to re-enter shape element data are performed. Now, after performing contour processing of the shape as shown in Figure 9 (A) which shows the planar input shape diagram, the figure (
Let us consider a case where the ridgeline part (IN) of the upper part of the workpiece is chamfered as shown in B). Note that FIG. 9(B) shows an elevational processing shape diagram of FIG. 9(A). The machining shape of the workpiece displayed here is.

Naomi Sou......Sentence 1~! L? ?・・・・・・Total 2
2 arc elements...R1" R18...
・Total! It is formed at 8 locations, and for contour machining, in addition to these linear and circular arc elements, it is necessary to specify the positioning point M before the start of machining, the approach point A, and the escape point E after the end of machining. In order to specify the shape shown in Fig. 9 (A), it is necessary to input data regarding a total of 43 shape elements, and for these shape elements, input the following data ■ to ■. There is a need. Namely.

(OM...X, Y, Z $ mark of positioning point,
Feed form t, >A...X and Y coordinates of approach point, approach method, approach circle radius.

■Line element...X, Y coordinates of the end point (radius and angle if input in polar coordinates) Connection form with secondary shape elements ■Circular element...X, Y coordinates of the end point of the arc 2X of the center of the arc
, Y coordinate 1 arc radius 1 circular arc rotation direction 1 connection form with the shape element ■E...X, Y, Z coordinates of escape point, escape circle radius, feed form, these data ■～■ It is not necessarily necessary to input all the data, but once you have finished inputting the data regarding the final shape elements, the data for all shape elements must be determined, whether by data input or internal automatic calculation. There is.

If all the above-mentioned data were to be input for the 43 shape elements that make up the processed shape shown in FIG. When machining (chamfer) IN after machining the contour NN as shown in Fig. 9 (B), when inputting the machining shape, the data of the 205 items mentioned above must be input in exactly the same way. It won't happen.

An example of data input for such contour processing and chamfering processing will be explained with reference to FIG. 1θ.

First, specify contour machining from the machining menu (Step 5ll), then enter the machining data necessary for contour machining (Step 512). The machining data includes surface roughness, tool diameter, finishing allowance, and machining source. and so on. Contour machining conditions are automatically determined based on these input data and technical data (step 513), and cutting conditions such as cutting speed, feed rate, clearance, presence or absence of coolant are automatically determined. Next, machining shape elements are specified. Next, in step 514), the data of the 205 items described above are input.

When the shape element designation for contour machining is completed, chamfer machining is specified from the primary machining menu in step 515.
), chamfering data is input (step 31B). As this chamfering data, data such as chamfering tool diameter, chamfering amount, chamfering direction, etc. are input. Based on these input data and technical data, chamfering processing conditions are automatically determined (stay, step 517), and cutting conditions such as cutting speed, feed rate, presence or absence of coolant, etc. in this chamfering processing are automatically determined.
Next, in step 518), the data of the above-mentioned 205 items are input to specify the machining shape element to be chamfered. In this case, positioning point M, approach point A
, Regarding the relief point E after machining, it does not necessarily have a direct effect on chamfering even if it is not the same as when specifying the contour, but the shape element data may be different from that during contour machining. Input errors cannot be tolerated because inputting the information will make it impossible to chamfer or may damage the workpiece.

As described above, according to the conventional method, it is difficult to process multiple areas on the same machined shape, such as milling, pocket, groove, etc.
When contour machining etc. is applied, the same machining shape element data is required to be input for the second and subsequent machining, which places a heavy mental burden on the program creator, and the number of data input items also depends on the type of machining. increases in proportion to

For this reason, there are problems such as it takes time to input data, increases the possibility of data input errors, and the same data may be stored twice in the finite shape element data storage area secured inside the automatic programming device. This method is uneconomical, and there is a problem in that the number of shape elements that can be specified is actually reduced.

(Object of the Invention) The present invention was made in view of the above-mentioned circumstances, and the first purpose of issuing one is to
The purpose of the same processing shape element is to provide an area processing designation method in automatic programming for NG that allows processing of all areas with only one data input.

(JN Essentials of the Invention) The present invention relates to an area machining designation method in automatic programming for NC that creates a machining program by setting machining data and machining conditions, and registers technical data necessary for determining machining conditions. There is a processing data registration section that stores standard processing data with pre-named names, and a processing data registration section that stores input data for performing desired processing and internally automatically determined processing data. an input data storage section for storing data, and a shape element data storage section for storing shape element data for processing into a desired shape,
Based on the respective data registered or stored in the technical data registration section, the processing data registration section, the input data storage section, and the shape element data storage section, the desired processing shape can be obtained without duplicating the same processing shape. It is designed to create a machining program.

(Embodiment of the Invention) Fig. 1 shows an example of a block diagram of the configuration of an interactive automatic programming system to which the present invention is applied. It is designed to manage and generate processing programs. First, the dialog input data input from the keyboard 2 is stored in the input data storage section 6. In addition, the technical data necessary for determining machining conditions is registered in advance in the technical data registration section 7, and the post-processor data registration section 9 stores G codes, M codes, and tool change sequences related to the target machine tool and NC device. Unique data such as: Furthermore, the machining data registration unit 4 contains data regarding combinations of area machining that can be applied to the same machining shape, that is, registered names and the number of process steps for area machining.

Standard machining data such as machining type and tools used in each process is registered, and editing such as new registration, correction, and deletion of machining data is performed by the machining data editing means 3.
It is done through. On the other hand, data regarding processing shape elements is stored in the shape element data storage fs10. Here, the main control section 1 transfers data from the input data storage section 6 and the shape element data storage section 10 to the post-processor data registration section 9.
An NG part program suitable for the target machine tool is created and stored in the machining program storage section 8. These series of registration, storage, etc. are carried out in an interactive manner, such as input guidance and input display on the graphic CRT 5 and data input using the keyboard 2.

The operation of such a configuration will be explained with reference to the flowchart in FIG.

First, a machining surface angle is specified as interactive input data input using the keyboard 2 (step S1).
, In this case, when creating an NC part program for a machine tool without an additional axis, input of machining surface angle data is not necessary.In the 0th order, machining is specified (step S2), hole machining, area machining ( Milling cutter, pocket, groove 1
For each of these machining processes, input the tool used, machining diameter, machining depth, cutting width, depth of cut, etc. Based on the data, etc., the main control unit 1 determines the optimum cutting speed, feed rate, clearance amount, step feed feed amount, etc. under the combination conditions of the tool material, tool diameter, and material to be cut.

Next, the machining shape is specified (step S3).
, here, specific shape data for each machining, such as hole arrangement in hole machining.

The number of pieces and data of each shape element forming the shape to which pocket processing is applied are input. Then, these data specifications are repeated for each required shape, machining, and machined surface angle (steps S1 to S8). When these data input processes are completed, the main control unit 1 stores the input data storage unit 6 and the shape element data storage. The data in section 8 is sent to the post-processor data registration section l.
Processing is performed based on the data of O to create an NC part program suitable for the desired NC machine tool (step S7
), then this N according to the instructions of the program creator
Perform machining simulation of the G part program (
In step s9), the tool trajectory, machining process, etc. are checked. Note that the shape support element group data once input in the shape element designation in step S3 is regarded as shape element input data for area processing of all processes in which the area processing method registered in the processing data registration unit 4 is 4IIr&. , can be incorporated into the NG pardobe a-gram.

FIG. 3 is a flowchart for the shape processing shown in US91M(x), CB) D, when Mitatsu II is applied, and corresponds to the flowchart in FIG. 10 for conventional hojo processing. In FIG. 3, first, the registered machining name is specified (step 521), and the machining data necessary for contour 9 chamfering is surface roughness 9 contour tool diameter, machining depth 9 chamfer amount.

Input the chamfering direction 2, chamfering tool diameter, etc. (step 522)
Based on this input data, the machining conditions for the one-sided chamfer machining are automatically determined (step 523), and the machining shape elements are specified (step 524). This machining shape element designation data is as explained in Fig. 1O. This is the same as step S14 or S18, and by applying the present invention, 1. 43 elements, 2.
It turns out that you only need to input the data for 05 once.

FIGS. 4(A) and 4(B) show the shape element data storage unit in the conventional method and the present invention method regarding the combination of area processing. This figure shows an example of the - shape to see the difference in the utilization efficiency of O. Figure (B) shows the input shape elements for machining, and the linear element +-! L4. Seven milling FF is performed on the upper surface of the workpiece for the machining shape composed of circular arc elements R1 and R2.

The side surface is contoured NN, and the intersection line of the milled surface FF and the contoured surface NN is chamfered (2).

FIGS. 5 and 6 (A) show the data input operation procedure for processing a shaped object as shown in FIG. 4 (A) using a conventional method.

In (B), the method according to the present invention is shown in FIGS. 7 and 8, and the conventional method is f:! As shown in Figure S7, first, milling is specified (step 531), then milling data is input (step 532), milling conditions are automatically determined based on this input data (step 533), and the next 8. Specify the milling shape required 1!1 (-P) as shown by ■ in FIG. Similarly, for contour processing, proceed according to steps S35 to S37,
Milling shape element data P as shown by ■ in Fig. 8
Input the contour processing shape element that is exactly the same as (Step 5)
38), and step 538~ for single chamfer processing
5t41, and input a chamfering shape element that is exactly the same as the milling shape element data P shown by ■ in FIG. 8 (step 542). In this way, milling 1 contour machining 1 Since each chamfering process is treated as an independent process, it is necessary to input the shape elements for each process, and the shape element data storage section! 0 has exactly the same content, A, E, it ~dan4.

Shape element data P such as R1 and R2 is stored redundantly for three processes.

On the other hand, looking at the data input operation procedure shown in FIG. 5 using the unissued I11 method, first, a registered processing name is specified (step 551), but in this case.

In the processing data registration section 4, registered processing names are registered in advance in Fig. 6 (A
), and when machining data is input (step 552), machining conditions are automatically determined based on J and Ii based on the input machining data (step 553), and then Specifying processing shape elements as shown in FIG. 6(B) (step 554),
To explain such a procedure in more detail with reference to FIG. FMT registered in data registration section 4
Based on the data regarding LLI, FNrLL1tJI
The machining data input guide for each machining method of M-forming 7 rices and 1 contour chamfer is displayed on the graphic GRT5, and the machining conditions for each process are automatically determined based on the input machining data. In specifying the machining shape elements, it is only necessary to input heel, A, E, 1-14.
Shape element data for l machining is stored as MILLI. In other words, compared to the conventional method, the amount of data to be input and data to be stored is 1/3.

(Effects of the Invention) As described above, according to the method of the present invention, when multiple area machining is applied to the same machining shape, not only the input operation of shape element data becomes simple, but also the input operation of shape element data becomes easy. By avoiding duplicate input of
It is possible to reduce the mental burden on the program creator. At the same time, since shape element data regarding the same shape does not need to be stored redundantly, the number of shape elements that can be specified can be substantially increased.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a configuration example of an interactive automatic programming system to which the present invention is applied, FIGS.
A) and CB) are diagrams showing an example of a workpiece, FIG. 5 is a flowchart showing the area processing designation method according to the present invention, FIGS. 6 (A) and (B) are diagrams showing examples of the data, and FIG. 7 8 is a flowchart showing the conventional method, FIG. 8 is a diagram showing an example of the data, 91M(A) and (B) are diagrams showing an example of the workpiece, and FIG. 1O is a diagram showing the program creation operation procedure by the conventional method. It is a diagram. l... Main control unit, 2... Keyboard, 3... Processing data editing means, 4... Processing data registration unit, 5...
Graphic CRT, 6... Input data storage section, 7.
...Technical data registration diagram, 8...Machining program storage section, 9...Post processor data registration section, 10...
Shape element data storage. Applicant's agent Yu Yasugata Figure 3 Figure 2 Hidden $3 (A) t CB) Figure 4 Sheep (Disaster Calculation) Figure 5 Figure O (A) Figure 6 CB> Figure 7 ! 5 8M Figure 9

Claims (1)

[Claims] In automatic programming for NC, which sets machining data and machining conditions to create a machining program, there is a technical data registration section that registers the technical data necessary to determine machining conditions, and a technical data registration section that pre-names standard machining data. a processing data registration section for registering data, an input data storage section for storing input data for performing a desired processing and internally automatically determined processing data, and a shape element for processing into a desired shape. a shape element data storage section for storing data, and each data registered or stored in the technical data registration section, the processing data registration section, the input data storage section, and the shape element data storage section, respectively. based on,
A region machining designation method in automatic programming for NC, characterized in that a desired machining program is created without repeatedly inputting the same machining shape.