KR101078800B1 - External part program writing device - Google Patents

Abstract

The present invention relates to an external part program creation apparatus, and more particularly, an external type that assists a user to easily and quickly create a part program for driving a numerical control machine having various processing functions through an interactive user interface. The part program preparation apparatus of the present invention.
In the external part program generating apparatus according to the present invention, a display screen and a touch panel are integrated, and a button input screen and a data input screen are displayed at a predetermined position on the screen, and the user touches a button or a variable input from a keypad on the touch panel. A part program generator having a wired / wireless communication means for receiving a value to generate a part program and transmitting the generated part program to a numerically controlled machine tool or for monitoring a numerically controlled machine tool; A cradle capable of fixing the part program creator; And it characterized in that it comprises a fixing means for mounting the cradle to a machine tool.

Description

External device for generating the part programs

The present invention relates to an external part program writing apparatus, and more particularly, to assist a user in easily and quickly creating a part program for driving a numerically controlled machine tool having various machining functions through an interactive user interface. An external part program writing apparatus. By using the external part program creation device of the present invention, the user communicates with the numerical control device of the machine tool at the office as well as the machining site, and generates a machining path and generates the machining path quickly and conveniently. Can increase the productivity.

Numerous numerical control machine tools are in mass production today, and it is common to manually create a part program in the numerical control device that lists the commands for driving the numerical control machine tool. However, due to the increasing number of unskilled workers, the task of manually creating part programs has not been made smoothly. In addition, there is a limit to the manual creation of part programs for machining complex curved shapes. CAM) is provided separately to create a part program for a numerical control machine tool on a personal computer.

However, most CADCAM systems are more often used for advanced machining technicians than for non-skilled workers. Especially, many variables needed for cutting-feed rate, cutting speed, cutting depth, spindle speed, direction of spindle rotation, tools, etc. It is necessary to input directly, and the CAD method that defines the machining shape is complicated, which requires a lot of training time to use the CADCAM system smoothly. Nevertheless, the milling part program for mold machining with free surface is generated by using expensive CAD cam system, but most lathe part programs are created manually by a few skilled workers, thus improving the productivity of turning. It is in a declining state.

In addition, the recent trend of machine tools has been progressing to multi-axis and complex, so that non-skilled people can operate part programs using G-code and M-code. It is very difficult to write by hand, and there are many time consuming problems. In addition, most users of numerically controlled machine tools want to create a part program using the information on the machine tool's specifications and installed tools on the numerical control device. In the office, the part program using the CADCAM system is being made.

Therefore, there is a need for a part program device that supports a conversational method that is simpler than the existing CADCAM method and allows a programmer to quickly create a program in the workplace.

The present invention has been made to solve the above-mentioned field trouble point, and it is convenient to generate the part program for machining of numerical control machine tool, which is difficult to create the part program manually, especially the outer cover surface of the machine tool installed in the workshop as well as the office The purpose of the present invention is to provide an external part program writing device that can be mounted on the system so that the part program can be created conveniently and quickly in the field.

It is still another object of the present invention to provide an external part program generating apparatus capable of transmitting a created part program to a plurality of numerically controlled machine tools through short-range wireless communication means.

In addition, the present invention, by reading the various parameters, tool offset value, tool position and shape information, etc. in the numerical control device mounted on the machine tool, by using the above information in generating the part program, creating an external external part program It is to provide the same effect as the device is built in the numerical control device.

External part program creation apparatus according to the present invention for achieving the above object, the display screen and the touch panel is integrated, the button input screen and the data input screen is displayed at a certain position of the screen and the user touches or touches the button A part program generator which receives a variable value input from a keypad on a panel to generate a part program, and transmits the generated part program to a numerically controlled machine tool or is provided with a wired or wireless communication means for monitoring the numerically controlled machine tool; A cradle capable of fixing the part program creator; And it characterized in that it comprises a fixing means for mounting the cradle to a machine tool.

The part program generator may further include an input unit that receives a user input; A data memory section for storing data used in the part program creator; A system memory unit which stores a core driving module of the part program maker; A communication unit connected to the numerical control device and the external Internet and transmitting a part program; A display unit for outputting a screen for a user interface; A system control unit connected to each element unit to control an entire system; And a power supply unit including a voltage adjusting circuit for supplying power to the entire system.

   According to the present invention, on the external part program creation device, the user naturally proceeds with a series of processes such as program environment setting, tool setting, machining process setting, and final machining path operation with the help of a graphic interactive screen, thereby naturally executing the part program. It can be written quickly and accurately, and ultimately, the productivity of the workplace is improved.

In addition, it is possible to create a part program for a number of numerically controlled machine tools in one part program creation device, and transmit the part program to each numerically controlled machine tool through short-range wireless communication means. It also has the effect of increasing the uptime of many similar numerically controlled machine tools located in the workplace.

Furthermore, by reading various parameter values including tool offset value, tool position and shape information in the numerical control device and creating part program in the field, it is possible to quickly solve the problem of the existing CAD Cam system that is created in the office rather than the field. It also has an effect.

1 is a perspective view of an external part program creating apparatus according to an embodiment of the present invention;
Figure 2 is an embodiment of the fixing means for attaching the cradle of the external part program writing device to the outer surface of the machine tool,
3 is a schematic structural diagram of a part program generator according to an embodiment of the present invention;
4 is an embodiment of a process input screen of a part program generator according to an embodiment of the present invention;
5 is an embodiment for inputting tool information according to an embodiment of the present invention;
6 is a flowchart of a program creation method of a part program generator according to an embodiment of the present invention;
7 is an embodiment of transferring a part program from a part program creator to a plurality of machine tools.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. For reference, in describing the embodiments of the present invention, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a perspective view of an external part program writing apparatus according to an embodiment of the present invention, Figure 2 shows an embodiment of the fixing means for attaching the cradle of the external part program writing device to the outer surface of the machine tool.

As shown in FIG. 1, the external part program generating device includes a part program generator 100, a cradle 200, and fixing means 210, 220, and 230.

The part program creator 100 is a separate device existing outside the numerical control device for controlling a machine tool, and a display screen and a touch panel are integrated to display a button input screen and a data input screen at a predetermined position of the screen. The user interface is realized by accepting the variable value input by the user or by using the keypad on the touch panel. In addition, a wired communication means such as RS-232C for transmitting to a numerically controlled machine tool aiming for a completed part program is provided, and short-range wireless communication means such as Bluetooth or Zigbee for wirelessly transmitting and receiving data may also be provided. Can be. In addition, the numerical control device may be provided with a communication means for monitoring the state of the machine tool by being connected in a wired or wireless form such as Wi-Fi, Ethernet.

The part program creator 100 may be mounted and fixed to the holder 200 and, if necessary, is a mobile type part program maker that can be separated from the holder and brought to the office. 1 shows an embodiment in which the part program composer 100 is fitted to the cradle 200, but may be implemented as a structure in which a small cradle is fitted into a groove formed in the rear of the part program composer. That is, the cradle 200 may be configured in a form of fixing the upper and lower sides by inserting the part program creator 100 as shown in Figure 1, alternatively, the cradle in the groove formed on the back of the part program creator 100 It is also possible to form the projection formed in the fitting.

As a fixing means for mounting the cradle 200 on the surface of the numerical control machine tool, a method of simply using a magnet may be considered. The magnet holder 220 is fixed to the surface of the holder 200 by bolts, and a lever 210 is provided in the magnet holder 220. The holder is mounted on the surface of the machine tool by turning the lever 210 left and right. Or it has a structure that can be removable. That is, as shown in FIG. The lever 210 can be rotated along the inclined groove of the magnet holder 220. At this time, the magnet 230 connected to the lever 210 moves vertically up and down to change the separation distance from the surface of the machine tool. The stand features a structure that can be attached or detached conveniently.

In one embodiment of the present invention has been described an example of fixing the part program creator with the holder 200 and the magnet holder 220 for fixing the holder as described above, but is not limited thereto and directly to the surface of the machine tool using a bolt It can be fixed and installed in a variety of ways, such as the method of fixing the cradle, the method of inserting the cradle and the part program writer in the machine tool control panel.

3 is a schematic structural diagram of a part program generator according to an embodiment of the present invention. As shown, the part program generator of the present invention includes an input unit 10 that accepts user input, a data memory unit 20 for storing data used in the part program generator, and a core driving module of the part program generator. Connected to the system memory unit 30, the numerical control device and the external Internet, a communication unit 50 for transmitting a part program, a display unit 60 for outputting a screen for a user interface, the input unit, a data memory unit, a system memory unit And a system control unit 70 connected to the communication unit and the display unit to control the entire system, and a power supply unit 80 to supply power to the entire system.

The input unit 10 is a component for inputting a user's selection and essential data to the part program creator 100, and the display unit 60 is a component indicating a state of the part program creator to the user. The input unit 10 may receive input from a general keyboard and a mouse, and preferably, a touch interface may be installed in close contact with the surface of the display unit 60, and the user may simply input a button or input box displayed on the display unit 60 through an interactive method. Input can be input by touch.

In addition, the communication unit 50 is an interface part for connecting the part program generator with another system, and the wired serial communication means 52 for transmitting the created part program into the numerical control device of the corresponding machine tool, and the wireless method. Short-range wireless communication means 54, and also wired and wireless Ethernet 56 that is directly connected to an external Internet connection or numerical control device may be optionally provided. For example, the part program creator equipped with the short range wireless communication means 54 such as Zigbee or Bluetooth transmits the part program to the ZigBee or Bluetooth device provided in the numerical machine tool of the local area via a wireless method or controls the numerical value. Data required to create a part program can be transmitted from the device.

The data memory unit 20 is a variable assigned to a specific machining process, such as machine data 21 for storing a numerical control device for driving a part program and variables related to a machine tool, outer diameter machining, drill machining, tap machining, and the like. Process data 22 for storing the data, tool data 23 for storing the tool materials, dimensions, and offsets associated with the machining tool, cutting condition data 24 for storing the tool materials, the machining materials, and machining parameters according to the process. , Material material data (24) for storing data related to the material of the workpiece frequently used for machining, and the optimal tool movement strategy such as machining method, tool change position, rapid approach or departure method according to each process It is characterized in that it is composed of machining strategy data 26 and wide-area data 27 for storing system-wide variables used in the creation of each part program.

In addition, the system memory unit 30 includes a process management module 32, a tool management module 31, a file management module 33, a shape definition module 34, a cutting condition module 35, and a code generation module 36. ), A processing time calculation module 37, a simulation processing module 38, and a communication management module 39. The main functions of each module are as follows.

The process control module 32 includes a basic process routine for firstly declaring basic data in all processes, a process data input routine for receiving detailed data required for each process, and a process operation routine for copying, moving, or modifying a process. This is the included module.

The basic process routines include the global variables used in the system, including coordinate systems (absolute / incremental), programming units (inch / meter or diameter / radius), spindle data settings, feed units (mm / rev, m / min), tool retraction points. It is a routine that is selectively set by the user for the tool retraction method, the material of the workpiece, or the machine to be used. This basic process routine must be preceded before entering each machining process, wherein the determined data is stored in the wide area data 27 of the data memory unit 20 to be driven in association with each module of the system memory unit 30. do. In addition, the process data input routine is a routine that receives parameters required for the machining process selected by the user in an interactive form using a graphical user interface.

4 is a view showing an embodiment of a process input screen of a part program generator according to an embodiment of the present invention, and is a screen on which a process data input routine is driven. In this embodiment, the information on the type of machining required for milling on the lathe, machining direction, shape number, depth of machining, finishing allowance, and the like, and then specify the tool number to be used, the number of revolutions, feed rate, The cutting conditions and the cutting strategy of the depth of cut are selected and displayed, which shows the features that assist the user to easily and quickly create a part program even if the user is not skilled.

Machining processes can be classified into milling, turning, drilling, grooving, tapping, threading, and other machining cycles, including machining cycles such as roughing, finishing, drilling, grooves, screws, and pockets. You can make a program simply and efficiently by commanding as one block.

On the other hand, the process manipulation routine is a routine that allows the user to easily display and modify the machining processes entered at any time while inputting the machining process. In other words, it shows the processes entered up to now, knows the values entered in the previous process, can modify the parameters of the entered process, delete unnecessary processes, and between the processes entered so far. You can add new machining processes anywhere and change the order of the machining processes.

The tool management module 31 performs a function of setting and managing information on a tool to be mounted on an actual machine tool. To do this, tool information can be input from an external part program generator using a tool list to be used for machining.

5 shows an embodiment of inputting tool information according to an embodiment of the present invention. As shown, the tool type (tool type), tool material, and tool shape parameters are received through an interactive screen. The data input in this manner is stored in the tool data 23 of the data memory unit 20.

On the other hand, since a tool data screen for managing a tool mounted in the numerical control device of a machine tool is provided, the numerical control device and the part program creator 100 of the present invention share the tool data through communication with each other. Tool data in the numerical control device can be taken and stored in the tool data 23 without the input process shown in FIG.

The file management module 33 manages copying, deleting, storing, or moving a created part program, a tool data file, a trajectory file generated in a simulation, and provides a text editor for modifying each file.

Shape Definition Module 34 As a module for defining the shape of a workpiece, a user interface different from the existing CAD is supported. For this, a tabular shape definition method consisting of various graphic menus including lines and arcs is applied. In particular, when finishing, the surface roughness of each section can be set differently, and accordingly, the cutting feed rate of each section can be automatically designated, and the definition of chamfer (chamfer, round) is easily processed.

Generally, the cam system emphasizes the vast CAD function for defining the geometrical shape of the part as a way of defining the shape that represents the geometric or processing characteristics of the workpiece, but this is one of the most inconvenient processes for the user. In the part program creator of the present invention, not only a method in which a worker directly inputs a machining drawing, but also a data file (for example, DWG, DXF, IGES, etc.) generated from an existing CAD card is read and displayed to display a shape desired for machining. It also supports a method of easily defining the shape by allowing the operator to select from the touch screen.

The cutting condition module 35 is a module for selecting cutting conditions (spindle speed, feed amount, depth of cut, etc.) with reference to the tool data 23 and the material data 25 including information on the shape and material of the tool. . The selected cutting conditions are automatically displayed in the cutting conditions input field of the process input, making it easy for unskilled workers to program. In addition, the cutting conditions such as selected or modified by some data selected by the user are stored in the cutting condition data 24 so that the modified data is recommended when a process, a tool and a material under the same conditions are selected.

The code generation module 36 refers to the data of the data memory unit 20 based on the user input element input from the process management module 32, such as a movement path, cutting condition, synchronous processing, etc. Creates a part program with information. At this time, by using the post processor information of the numerical control device stored in the machine data 21 to generate a part program having a code system that can be understood by the numerical control device.

Machining time calculation module 37 provides a function for estimating the time required when the machining is actually performed with the generated part program. The module calculates the time required for the entire machining in consideration of the code type in the part program, the acceleration / deceleration time of the corresponding machine tool, the tool change time, the M code operation time, and the like. It is characterized by finding the shortest machining time by changing machining strategy.

The simulation module 38 is a module that verifies the tool trajectory of the part program automatically generated by the system based on the user's basic input by simulation through the graphic process. The final shape is formed from the material for the high sensitivity user interface. Handles dynamically In addition, it continuously displays the machining time (cutting time, non-cutting time) according to the movement of the tool and is used as a tool for optimizing the tool trajectory. In addition, it checks the collision with the clamp set in the initialization routine, and shows the cutting process from the initial shape of the workpiece to the finished shape in solid graphic form. In addition to verifying the tool path, the process of changing the shape of the workpiece during machining can be observed. .

The communication management module 39 is connected to the communication unit 50 and performs a function of exchanging data with an external device through the external part program apparatus. For example, a DCC function for transmitting a part program to the numerical controller using the short range wireless communication 52, and the data in the numerical controller using the Ethernet 56 are read to the part program generator 100. The monitoring function is a representative function, and in addition, a function of transmitting and receiving data by connecting to an external Internet network may be provided.

On the other hand, the system control unit 70 is connected to each of the elements to control the entire system to perform the graphics control module 62 and each module in the system memory unit 30 that manages the graphics shown on the display unit 60. A central computing device 65 is included, and an internal memory 67 may be included to provide a space for the central computing device to temporarily store data during the operation.

In addition, the power supply unit 80 for supplying power to the entire system includes a voltage adjusting circuit for changing the input power to the power required by the system, and may further include a charging circuit including a battery, if necessary. The battery and the charging circuit are useful in the case where the external part program generator 100 is used as a mobile device by positioning the part program generator to a place other than a machining site.

Hereinafter, with reference to the accompanying Figure 6 will be described a program creation method of the part program generator according to an embodiment of the present invention.

When power is supplied to the part program maker, the program creation screen appears after the initial screen of the entire system is displayed. The first input is a step (S100) of determining the input order according to the priority selected by the user.

In the case of turning, it is necessary to define the machining shape in order to machine the inside and outside diameter of the machined rotating body. Step (S110) may be selected to first define the shape desired to be processed in the process.

In addition, the program device is set to select a step (S120) of directly inputting and setting a tool used in a machine tool or receiving a tool data set in a numerical control device through the communication unit 50 and managing a tool to be actually used for machining. Can be driven.

If the shape definition step (S110) or the tool management step (S120) is not performed, the basic process input step (S130) may be performed immediately, and of course, the shape definition step (S110) or the tool management step. Even after selectively performing (S120), the process moves to the basic process input step (S130). In this step, the basic process routine of the process management module 32 is used to set up the global variables for programming, coordinate system (absolute / incremental) setting, programming unit (inch / meter or diameter / radius) setting, spindle data setting, feed unit Data such as a setting, a tool retraction point, a tool retraction method, a material of a workpiece, a machine definition, and the like are set and stored in the data memory unit 20.

 After the basic process is set, after selecting a process to be set among machining processes such as turning, milling, drilling, tapping, groove, and screw, a process selection and data input step of inputting data and tool information required for the selected process (S140). ). This step is performed by the process data input routine of the process management module 32.

In some processes of turning and milling, shape definition is required. If the shape is defined in advance by performing step S110, the shape may be called and used. In addition, the tool information must be input in all processes. If the tool information is set in step S120, the information can be called and used. If the shape definition and tool information have not been entered in advance, they can be defined and used in each required process.

When the data input for the machining process is completed, the cutting conditions and the machining strategy input step (S150) is performed. That is, the cutting conditions necessary for the machining should be selected by referring to the selected tool and the shape and material of the workpiece, and the machining strategy that specifies the method of machining should be selected. For example, in the case of drilling, it is necessary to select whether to process while removing the chip or to cut off the chip.In another example, in the case of roughing, whether the machining is performed along the shape at the machining end point and then moved to the return point, or The machining strategy in various cases, such as whether to move directly from the machining end point to the return point, is conveniently set using the interactive screen provided by the process management module 32.

 The next step is to generate a part program that can be understood by the numerical control apparatus based on the machining data, the machining shape, the machining tool, the machining strategy, the cutting conditions, etc. inputted to date (S160). The code generation module 36 generates a part program having information such as a movement path, cutting conditions, and whether synchronous machining is performed by the cutting tool by referring to the data of the data memory unit 20 based on a user input element. A part program having a code system for the numerical controller is generated using the post processor information of the numerical controller.

Simulation step (S170) verifies the tool trajectory of the part program automatically generated using the simulation module 38 by simulation through graphics, and also tests the collision between the tool and the workpiece or the tool, You can check whether there is a problem. The simulation step (S170) may be performed when the input for one machining process is completed, and may also be performed for the entire process after the input of all the machining processes is completed.

Through the steps described above, the processing process is programmed to determine whether the process is completed (S180), and the input of the required processing process is sequentially performed to prepare the pod program for the entire processing process.

The program terminating portion S190 may be optionally used, and may specify a task to be performed next before terminating the program. For example, it is possible to specify optional functions such as whether to use a counter that counts the number of machining operations, the number of programs to be executed after the current program, the number of repetitions of the current program, and whether to call an M code for connection with an automated device.

Fig. 7 shows an embodiment of transferring a part program from a part program creator to a plurality of machine tools.

The part program generator 100 may create a part program for a machine tool installed thereon, and may also create a part program for a nearby machine tool, so that a part program created in one part program generator may be used for a plurality of machine tools. Can be transmitted and used.

The part program finally completed through each step of FIG. 5 is driven by a part program transmission function (DC function) managed by the communication management module 39 and wirelessly connected to the short range wireless communication means 54 of the communication unit 50. It is transmitted to the numerical control device of the machine tool through the near field communication means 58 of the connected machine tool. Of course, it is important to note that part programs can be transmitted to each machine tool using a conventional wired serial communication method without using wireless.

10: input unit 20: data memory unit
30: system memory unit 50: communication unit
60: display unit 70: system control unit
80: power supply section 100: part program creator
200: holder 210: lever
220: magnet holder 230: magnet

Claims (12)

In the part program generator for numerically controlled machine tools,
The display screen and the touch panel are integrated, and the button input screen and the data input screen are displayed at a certain position on the screen, and the part program is generated by the user touching the button or accepting the variable values input from the keypad on the touch panel. A part program generator provided with wired / wireless communication means for transmitting the programmed part program to the numerical control machine tool or for monitoring the numerical control machine tool; A cradle capable of fixing the part program creator; And fixing means for mounting the cradle to a machine tool.
The part program creator,
An input unit in which a touch interface is closely attached to a surface of a display unit to receive data from a user; A data memory unit for storing variable values used in the part program generator; A system memory unit for generating a part program using the data received from the input unit, and storing a module for performing simulation and file transmission / reception; A communication unit selectively provided with a wired serial communication means, a wireless short-range wireless communication means or Ethernet, connected to the numerical control device and the external Internet, and transmitting and receiving a part program or numerical control device monitoring data; A display unit for outputting a graphic interactive screen for a user interface; A system controller connected to the input unit, the data memory unit, the system memory unit, the communication unit, and the display unit to control the entire system; And a power supply unit including a voltage regulation circuit for supplying power to the entire system,
The system memory unit,
A process management module for performing basic process setting, process-specific data input and process operation;
A tool management module for setting and managing information on a tool to be mounted on an actual machine tool;
A file management module which manages copying, deleting, storing or moving of a part program, a tool data file, and a trajectory file generated by simulation, and including a text editor;
A shape definition module in which a user directly defines a shape of a workpiece or reads CAD data to designate a shape of the workpiece;
A code generation module for generating a part program having a cutting tool movement path, cutting conditions, and synchronous machining information according to the post processor information of the numerical controller;
A simulation module for verifying a tool trajectory of the generated part program through a graphic and checking a collision of a tool; And
A communication management module connected to the communication unit to exchange a part program or data with an external device;
External part program writing device characterized in that the configured point including a. delete The method of claim 1, wherein the fixing means,
Is connected to the cradle. A magnet holder having an inclined groove formed on an outer circumferential surface thereof;
A lever moving along the inclined groove of the magnet holder; And
A magnet provided in the magnet holder and connected to the lever;
External part program writing device characterized in that the configured point including a. delete The method of claim 1, wherein the power supply unit,
External part program writing device characterized in that the battery and the charging circuit is further provided. The method of claim 1, wherein the data memory unit,
Machine data for storing variables associated with the numerical control device and the machine tool on which the part program is to be driven;
Process data for storing variables assigned to the process;
Tool data for storing tool materials, dimensions, and offset amounts associated with the tool for machining;
Cutting condition data for storing tool materials and processing parameters according to materials and processes;
Material data for storing data related to the material of the workpiece;
Machining strategy data for storing an optimal tool movement strategy for each machining process; And
Global data for storing system wide variables used in the part program creation;
External part program writing device, characterized in that configured to include a. delete delete The method of claim 1, wherein the system memory unit,
An external part program writing device, characterized in that it further comprises a cutting condition module for selecting cutting conditions with reference to tool data and material data. The method of claim 1, wherein the process management module,
Basic process routines to selectively set system wide variables, coordinate systems, programming units, spindle data, feed units, tool retraction methods, material of workpiece or machine used;
A process data input routine for receiving parameters required for a machining process selected by a user in an interactive form using a graphical user interface; And
Process manipulation routines for copying, moving or modifying a process;
External part program writing device characterized in that the configured point including a. The method of claim 1, wherein the tool management module,
An external part program generating device characterized in that a tool list to be used for machining is input from a user, or tool data in a numerical control device is received and used. According to claim 1, wherein the communication management module,
External part program writing device, characterized in that the transmission of the part program through the serial communication, Ethernet, Bluetooth or ZigBee of the communication unit, or to monitor the data in the numerical control device.

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