KR101146286B1 - AUTOMATIC PIPE Profile-CUTTING AND BEVELLING EQUIPMENT - Google Patents

Abstract

An operation touch panel for calculating screen input / output, cutting trajectory coordinate values, and a beveling angle; A chuck for rotating the pipe to be processed supported by the support; A horizontal movement adjusting device and a vertical movement adjusting device 40 for adjusting a horizontal movement and a vertical movement of the torch for processing the pipe; A pivot device for controlling pivot movement of the torch; And a PLC for performing control based on the cutting trajectory coordinate value and the beveling angle. Through the present invention it is possible to perform the cutting trajectory processing and the beveling processing for the pipe at the same time.

Description

Automatic Pipe Shape Cutting and Beveling Device {AUTOMATIC PIPE Profile-CUTTING AND BEVELLING EQUIPMENT}

The present invention relates to the field of pipe cutting, and more particularly, to an automatic pipe shape cutting and beveling device that can be performed simultaneously by automatically cutting the cutting trajectory processing and beveling processing for the pipe to be processed.

In the conventional pipe cutting method, the cutting shape and the length of the pipe to be worked on are first displayed on the pipe to be worked on by using a piece of paper which has a shape required by the operator due to the characteristics of the pipe where the curved surface meets the curved surface. The operator directly cut according to the shape.

However, this conventional pipe cutting method by manual operation is inevitably caused because all the processes are made depending on the know-how of the worker and the workpieces appear differently according to the worker's work method, there was a difficulty in standardization.

In addition, this conventional manual pipe cutting method has a problem in that the processing for the beveling (improving the weld) according to the cutting shape of the pipe after cutting has a problem that must be added.

In order to overcome this problem, Korean Patent Laid-Open Publication No. 2000-0012752 and Korean Patent Laid-Open Publication No. 2009-0108153 disclose a device and a method for cutting a pipe by a mechanical method rather than by hand.

However, these methods also required some manual work to improve the details and precision, and in addition, all of them had the focus of the invention on the cutting of pipes, which required additional work for beveling.

Therefore, there is a need for a new type of automated pipe cutting method that solves this conventional problem.

The present invention is designed to eliminate the above-mentioned problems of the prior art, an object of the present invention is an automatic pipe shape cutting and beveling that can simultaneously perform cutting trajectory processing and beveling processing, which is a shape cutting along a cutting trajectory of a pipe. To provide a device.

In other words, the present invention standardizes different cutting trajectories by mathematical modeling, and uses a β-axis that can tilt the angle by ± 45 degrees while processing the cutting trajectory using the linear axis X axis and the rotation axis α axis. It provides automatic pipe shape cutting and beveling device that can simultaneously implement standardization and automation by processing products that do not need post-processing separately.

In the present invention, the pipe cutting through such a conventional manual operation is automated as mentioned above. In the present invention, the main technology is to form a cutting trajectory of various forms for such automation to be formulated into a formula to form a total of four axes while supporting a certain size and load through simultaneous three-axis drive and processing to enable processing It can include mechanical design technology that can be designed, motion control technology to control the trajectory of 4 axes through PLC, and communication technology necessary for RS-485 communication between the operation panel and PLC.

Based on the above techniques, for example, a cutting trajectory is formed by using the coordinate value of the cutting trajectory implemented through a mathematical formula for the cutting trajectory mathematically established according to each shape using a C language-based algorithm. The beveling value for each axis of the cutting trajectory is input to the β axis that implements the ring function, so that the X axis, the α axis, and the β axis are simultaneously implemented.

An operation panel for calculating screen input / output and cutting trajectory coordinate values and beveling angles of the present invention; A chuck for rotating the pipe to be processed supported by the support; A horizontal movement adjusting device and a vertical movement adjusting device for adjusting a horizontal movement and a vertical movement of the torch for processing the pipe; A pivot device for controlling pivot movement of the torch; And a PLC for performing control based on the cutting trajectory coordinate value and the beveling angle.

The display computing device may include a display unit for performing the screen input / output, a trajectory and a beveling angle calculation unit for obtaining a cutting trajectory coordinate value and a beveling angle based on a parameter of the pipe input from the display unit, and the trajectory and the beveling angle calculation unit. It may include a communication unit for transmitting the obtained cutting trajectory coordinate value and the beveling angle to the PLC.

The control panel may further include a ghost unit that displays the cutting track coordinate value and the beveling angle to implement a machining shape to be displayed on the display unit.

The PLC may include a second communication unit configured to receive the cutting trajectory coordinate value and the beveling angle in correspondence with the communication unit, an internal memory storing the cutting trajectory coordinate value and the beveling angle received through the second communication unit, and stored in the internal memory. A motion controller configured to receive and control the cutting trajectory coordinate value and the beveling angle, and to drive the chuck, the horizontal movement adjusting device and the vertical movement adjusting device, and a motor connected to the pivoting device under control of the motion controller. It may include a motor drive.

And the parameters may include the shape required by the operator, the outer diameter of the mother and branch pipes of the pipe, the thickness, the bonding angle, and the processing speed.

In addition, the trajectory and beveling angle calculator may include a computer added manufacturing (CAM) program, and the CAM program may calculate the cutting trajectory coordinate value and the beveling angle.

The display unit may be implemented to include a touch panel driven based on WINDOW CE. However, this is merely an example and it is obvious that other input means may be used in addition to the touch panel.

In addition, the pivoting device may pivot the torch, for example, ± 45 degrees.

The communication unit and the second communication unit may perform communication via RS485.

The CAM program can obtain a cutting trajectory coordinate value and a beveling angle corresponding to the decomposition equal fraction for each axis.

The horizontal movement control device may be a rack and pinion, and the torch may be a plasma torch.

Here, the coordinate value of the cutting trajectory may be an X-axis coordinate value, an α-axis coordinate value, and a β-axis coordinate value required for simultaneous three-axis machining. The definition of the coordinate value is described below.

As described above, according to the automatic pipe cutting and beveling device according to the present invention, it is possible to reduce the financial and time costs required to train skilled manpower for existing manual processing and to standardize slightly different cutting shapes for each worker. Can be.

In addition, it is possible to drastically reduce the inevitable defects in manual processing, and to significantly reduce the working time, thereby achieving economic benefits from the increase of the workload.

Hereinafter, the same reference numerals will be described in detail with reference to the accompanying drawings, with reference to the same components preferred embodiments of the present invention. The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical meanings and concepts of the present invention.

The embodiments described in the specification and the configuration shown in the drawings are preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, various equivalents and modifications that can be substituted for them at the time of the present application are There may be.

-Definition of direction-

First, the definitions of the X-axis direction, the Y-axis direction, the α-axis direction, and the β-axis direction and the like used in the present specification will be described, and a full description of the embodiments of the present invention will be described. The directions defined herein apply throughout the specification of the present invention.

Throughout this specification, the X-axis direction is defined as the horizontal axis direction in the drawing, the Y-axis direction is defined as the direction perpendicular to the X-axis direction, and the α-axis direction is the direction facing the drawing or in the opposite direction, and the β axis The direction may be defined in a clockwise or counterclockwise direction with respect to the direction in which the drawing is viewed.

Hereinafter, the automatic pipe shape cutting and beveling device according to the present invention will be described in detail with reference to the drawings.

1 is a schematic perspective view of an automatic pipe shape cutting and beveling device according to an embodiment of the present invention. FIG. 2 is an enlarged view illustrating a horizontal movement adjusting device and a chuck for cutting trajectory processing included in the automated pipe cutting and beveling device illustrated in FIG. 1. 3 is an enlarged view showing in more detail a pivoting device for beveling processing included in the automated pipe cutting and beveling device shown in FIG. 1.

1 to 3, the automated pipe cutting and beveling device 1 according to an embodiment of the present invention includes a PLC 130, an operation panel 10, a chuck 20, and a horizontal movement control device 30. , Vertical movement control device 40, pivot device 50, and two supporters 60. Motors (not shown) are connected to the chuck 20, the horizontal movement adjusting device 30, the vertical movement adjusting device 40, the pivoting device 50, and the supporter 60, respectively, such as linear movement and rotation. Can be performed.

The PLC 130 is responsible for overall control, which will be described later with reference to FIG. 4.

The operation panel 10 allows the operator to calculate the coordinate values of the cutting trajectories and the beveling angles corresponding to the respective coordinates through the formula.

In more detail, the operation panel 10 is a parameter for the pipe 100 input by the user—for example, the shape required by the user, the outer diameter, thickness, joining angle, processing speed, etc. of the mother and branch pipes of the pipe to be machined. Cutting trajectory according to the function to receive all values related to the operation of each component of the automatic pipe shape cutting and beveling device 1 and the various parameters related to the actual machining and the CAM (delete) program stored therein. It has the function to calculate and display the coordinate value and machining shape of 3 axes. Coordinates calculated by the operation panel 10 are coordinates for the X-axis, the α-axis, and the β-axis, and the cutting coordinate processing and the beveling processing may be simultaneously performed.

The chuck 20 is connected to a motor (not shown) to perform α-axis driving of the pipe 100 to be processed. That is, the pipe 100 is rotated at a given processing speed.

The horizontal movement control device 30 performs the X-axis driving of the plasma torch 110. That is, the horizontal movement adjusting device 30 performs horizontal movement of the plasma torch 110. The horizontal movement control device 30 may be a rack and pinion.

The vertical movement adjusting device 40 performs Y-axis driving of the plasma torch 110, that is, vertical movement of the plasma torch 110, thereby cutting the height of the plasma torch 110 and cutting the bevel path of the pipe 100. Adjust to facilitate ring processing.

The pivot device 50 is connected to a (not shown) motor to perform β axis drive of the plasma torch 110. That is, the plasma torch 110 is pivoted by, for example, ± 45 degrees to facilitate cutting trajectory processing and beveling processing.

The two supporters 60 may move along the rail in the X-axis direction as a mechanism for preventing the pipe 100 from sagging.

As shown in FIG. 2, the cutting trajectory may be implemented by the chuck 20 and the horizontal movement adjusting device 30, which are rotating shafts.

For example, in the case of branch pipe, while the chuck 20 rotates one rotation, the horizontal movement adjusting device 30 moves in the X-axis direction to process the cutting path, and in the case of the mother tube, based on the circle where the chuck 20 is processed. As a result, the cutting trajectory may be realized by simultaneously moving to the coordinate value of the horizontal movement adjusting device 30 corresponding to the angle rotating in the X-axis direction.

The vertical movement control device 40 is not a shaft requiring simultaneous machining such as a cutting trajectory, but a shaft for adjusting the height of the plasma torch 110 only.

As shown in Fig. 3, the pivoting device 50, which is inclined (pivoted) at ± 45 degrees, for example, is a shaft giving a beveling angle in order to facilitate post-processing welding. It is machined in three axes by applying this at the same angle.

FIG. 4 is a block diagram of a control panel 10 and a PLC included in the automatic pipe cutting and beveling device shown in FIG. 1.

Referring to FIG. 4, the operation panel 10 may include a display unit 401, a trajectory and beveling angle calculator 402, a ghost unit 403, and a communication unit 404.

The display unit 401 functions to allow the operator to input information about the pipe 100 to be processed and check the processing status. For ease of input, the display unit 401 may be implemented as, for example, a touch panel driven based on WINDOW CE.

The trajectory and beveling angle calculation unit 402 calculates the cutting trajectory and the beveling angle based on information about the pipe 100 input from the display unit 401, for example, in a predetermined computer program such as a CAM program. Based on the calculation, the cutting trajectory coordinate values corresponding to the decomposition equal fractions for each axis and the beveling angles corresponding thereto can be obtained. The computer program is not particularly limited and may be appropriately implemented according to various situations, and may be a general operation or program for obtaining a conventional cutting trajectory and a beveling angle.

The coordinates and beveling angles calculated by the trajectory and beveling angle calculator 402 are transmitted to the ghosting unit 403 and the communication unit 404, respectively.

The ghost unit 403 implements the machining shape by using the coordinate value and the beveling angle transmitted from the trajectory and the beveling angle calculator 402 to be displayed on the display unit 401 so that the operator can check the machining shape in advance. .

The communication unit 404 transmits the cutting trajectory coordinate value and the beveling angle transmitted from the locus and beveling angle calculator 402 to, for example, a programmable logic controller (PLC) 130 through RS485 communication.

The PLC 130 may include a central processing unit (CPU) 405 including an internal memory 406 and a communication unit 404b, a motion controller 407, and a motor driver 408. .

The cutting locus coordinate values and the beveling angle transmitted from the communication unit 404 of the operation panel 10 are stored in the internal memory 406 via the communication unit 404b of the PLC 130, and the stored cutting locus coordinate values and the beveling angle are respectively. The motion controller 407 is sequentially transmitted to and stored in accordance with the steps of.

The coordinate values and the beveling angles of the cutting trajectories sequentially stored are transmitted to the motor driver 408 as X-axis coordinate values, α-axis coordinate values, and β-axis coordinate values required for simultaneous three-axis machining. By driving a motor (not shown) associated with the shaft, the pipe 100 is actually processed, that is, cutting trajectory processing and beveling processing.

  In FIG. 5, the PLC motion controller receives a cutting trajectory generated by the software embedded in the touch panel, that is, receives the CL data through RS-485 communication, and transmits a driving value in the form of pulse to the driver so as to drive the servo motor to move the axis. By controlling the speed and position of the simultaneous three axes in real time. At this time, the current speed and position of each feed shaft are fed back to the motor drive through the encoder (E). Therefore, simultaneous 3-axis positioning control of PLC cuts the pipe by controlling each feed axis at the cutting speed input along the trajectory by the linear interpolation of the minute section.

In the above embodiment, each of the components of the operation panel 10 and the PLC 130 is taken separately, but the present invention is not limited thereto, and the operation panel 10 and the PLC 130 may be integrally formed. Can be. In this case, the data can be transmitted between the display computing device 10 and the PLC 130 through the above-described RS485 as well as other types of art common in the art, such as a communication bus.

In this case, the communication unit 404 replaces the role of the communication unit 404b so that the communication unit 404b can be omitted.

In addition, in the above embodiment, the CPU 405 included in the PLC 130 includes the internal memory 406 and the communication unit 404b, but the CPU 405 is a kind of control device. It will be apparent to those skilled in the art that the communication unit 404b may be configured separately.

In addition, in the above embodiment, although the display unit 401 is included in the display computing device 10, it may be naturally configured as a separate type of display.

The technical spirit of the present invention has been described above with reference to the accompanying drawings, but this is only illustrative of the preferred embodiments of the present invention and is not intended to limit the present invention. In addition, it is a matter of course that various modifications and variations are possible without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

1 is a schematic perspective view of an automatic pipe shape cutting and beveling device according to an embodiment of the present invention;

Figure 2 is an enlarged view showing in more detail the horizontal movement control device and the chuck for cutting trajectory processing included in the automatic pipe shape cutting and beveling device shown in FIG.

3 is an enlarged view showing a pivoting device for beveling processing included in the automatic pipe cutting and beveling device shown in FIG. 1 in more detail; and

4 is a block diagram of a control panel 10 and a PLC included in the automatic pipe cutting and beveling device shown in FIG.

5 is a diagram illustrating an example in which a motion controller drives a motor according to an embodiment of the present invention.

Claims (13)

An operation panel for calculating screen input / output, cutting trajectory coordinate values, and beveling angles; A chuck for rotating the pipe to be processed supported by the support; A horizontal movement adjusting device and a vertical movement adjusting device for adjusting a horizontal movement and a vertical movement of the torch for processing the pipe; A pivot device for controlling pivot movement of the torch; And A PLC that performs control based on the cutting trajectory coordinate value and the beveling angle, The operation panel, A display unit configured to perform the screen input / output; A trajectory and beveling angle calculation unit for obtaining a cutting trajectory coordinate value and a beveling angle based on the parameter of the pipe input from the display unit, and And a communication unit which transmits the cutting locus coordinate value and the beveling angle obtained from the locus and beveling angle calculator to the PLC. delete The method of claim 1, wherein the operation panel, Automatic pipe shape cutting and beveling device further comprises a ghost to display the cutting portion by implementing the cutting shape by receiving the cutting trajectory coordinate value and the beveling angle. The method of claim 3, wherein the PLC, A second communication unit receiving the cutting trajectory coordinate value and the beveling angle corresponding to the communication unit; An internal memory for storing the cutting trajectory coordinate value and the beveling angle received through the second communication unit; A motion controller configured to receive and control the cutting trajectory coordinate value and the beveling angle stored in the internal memory; And a motor driving unit for driving a motor connected to the chuck, the horizontal movement adjusting device and the vertical movement adjusting device, and the pivoting device under the control of the motion controller. The method of claim 4, wherein And said parameters include a shape required by an operator, outer diameters of the mother and branch pipes of said pipe, thickness, joining angle, and processing speed. The method of claim 5, And the trajectory and beveling angle calculation unit includes a CAM (delete) program and obtains the cutting trajectory coordinate value and the beveling angle according to the CAM program. The method of claim 6, The display unit automatic pipe cutting and beveling device comprising a touch panel driven based on WINDOW CE. The method of claim 7, wherein And said pivot device is capable of pivoting said torch at ± 45 degrees. The method of claim 8, The communication unit and the second communication unit automatic pipe shape cutting and beveling device, characterized in that for performing the communication by RS485. The method of claim 9, The CAM program is an automatic pipe shape cutting and beveling device, characterized in that to obtain a cutting trajectory coordinate value corresponding to the decomposition equal fraction for each axis and a beveling angle corresponding thereto. 11. The method of claim 10, And said horizontal movement control device is a rack-pinion. The method of claim 11, And said torch is a plasma torch. 13. The method of claim 12, The coordinate value of the cutting trace is an automatic pipe shape cutting and beveling device, characterized in that the X-axis coordinate value, α-axis coordinate value, and β-axis coordinate value required for simultaneous three-axis machining.

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