JPH0195819A - Fully automatic pipe working system - Google Patents

Abstract

PURPOSE:To correct data at a far distance, too, and to improve the working efficiency of pipe work by determining the working procedure according to CAM data, performing simulation of pipe bending and controlling a pipe finishing machine. CONSTITUTION:A pipe system diagram of a plant is made at interactive terminals 2, 3, the view data are registered in the data file of a host computer 1 and transmitted to an interactive terminal 4 in an online system through a transmit circuit. In an interactive terminal 4, the data of joint works, CAD, CAM are created online with a host computer 1. The CAM data is inputted into a floppy disk by an interactive terminal 5. Further, the floppy disk is set in a microcomputer 6 to convert the CAM data into N/C data. The N/C data are transferred to an NC controller 7 and the controller 7 controls a fully- automatic bend working machine 8 according to the data. Accordingly, workings such as marking, edge preparation and cubic bending, etc. in a piping are performed fully automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a fully automatic pre-pipe bending system that is applied to cold and hot bending of pipes.

[Conventional technology]

Conventionally, in order to obtain a bent pipe as shown in FIG. 11, first the first stage of bending is performed as shown in FIG. 12(b) using a bending device as shown in FIG. 12(a), and then To perform the second bending step, see FIG. 12(C).

It is necessary to rotate the bending device downward as shown in (d). Furthermore, if the pipe has a slope, etc. as shown in Figure 13, and the bending angle is other than 90 degrees, it may be difficult for humans to determine the work procedure using props such as wire, or for the human brain alone to handle the problem. Since there are some cases in which bending is possible, this has been a major hindrance in performing setup work before starting the bending process.

Further, even if the bending procedure could be handled, it would be difficult to check the trajectory of the bent pipe, and there was a risk of interference with peripheral equipment during the bending process. Moreover, in order to absorb various installation errors, many drawing changes were required, and the time required to process the changes was also considerable. However, in order to solve these problems, as described in Japanese Patent Application No. 160963/1983, in work processes such as bending, beveling, engraving, marking, etc., all automatic machines dedicated to each work process are connected and controlled. It is a factory automation-like system that has been designed to control these processes, and in addition, since it only has the function of simply converting the upstream CAD data that controls these into CAM data, it is a system that has functions such as bending and interference checking. was not taken into consideration. In addition, the special request
As described in No. 0-104483, the trajectory of the pipe during bending is processed and the presence or absence of interference is checked. The process itself is extremely time-consuming due to the analysis, and no consideration was given to a simple interference checking system. In addition, in both of the above two known examples, for piping of various shapes, which direction is the processing tip, whether only one side of the continuous surface is formed, or whether the work process includes both sides of the surface. No consideration was given to systems with functions such as .

[Problem that the invention seeks to solve]

The above-mentioned conventional technology is not suitable for pipe shapes that undergo bending, etc.
Development of a simple interference check system that determines what work procedure should be used to process the piping, and whether bending can be performed without interfering with other equipment when processing the piping. When a drawing is changed, no consideration is given to a system that immediately inputs corrected data using a graphics terminal and outputs the changed drawing, resulting in the problem that it takes a lot of time to prepare for machining before starting work. there were.

An object of the present invention is to create a fully automatic piping machining system that allows data to be corrected even from a remote site, eliminates wasteful work, and improves the work efficiency of piping machining.

[Means for solving problems]

The above purpose is for the computer to select the corresponding figure data based on the drawing number input from a terminal at a remote location, and to select the figure corresponding to the figure number based on the piping specification data input at the terminal. If the data needs to be changed, the corrected CAM data is created, the processing procedure is determined based on this CAM data, the interference check is performed by pipe bending simulation based on the obtained processing procedure, and the pipe processing machine This can be achieved by controlling based on CAM data determined in the simulation to cause no interference.

[Effect]

It is possible to change the graphic data from the field, and also to modify the CAM data based on the changed graphic data.
Since it is possible to determine the piping processing procedure based on AM data and to check for interference through simulation, unnecessary work can be eliminated and piping processing efficiency can be improved.

〔Example〕

A fully automatic piping addition system which is an embodiment of the present invention will be described below. First, an overview of the processing in the system of this embodiment will be explained. The fully automatic pipe processing system consists of a host computer, an interactive graphic terminal, and a fully automatic bending machine. The host computer and the interactive graphics terminal are connected online.

An interactive graphic terminal displays CAD data (drawing output information) for each turn, such as piping route, bending angle, dimensions (pipe length), slope, welding point position, fittings (
(couplings) etc. in accordance with on-site change requests, and the revised drawings are immediately output. At the same time, the changed CAD data is updated for each spool, including the number of bends, diameter, spool material length, bending tolerance, bending angle correction value, each pipe length, bending angle, solid angle, and booster force (push from the rear of the pipe). force, compressive force) or into CAM data such as beveling and tube end polishing directions. In addition, processing data for the piping spool is created, and the system determines whether or not it can be bent without interfering with equipment, etc., and predicts whether or not it can be bent before bending.

The details of this embodiment will be explained below with reference to the drawings.

FIG. 1 shows the overall system configuration of this embodiment.

In FIG. 1, 1 is a host computer that stores CAD data and systems, and is installed in a factory. 2 and 3 are interactive terminals installed in the factory, and 4 and 5 are installed at field sites located in remote locations away from the factory. A piping system diagram of the plant is created on the interactive terminals 2 and 3, and graphic data of this piping system diagram is registered in a data file of the host computer 1. The graphical data of the piping system diagram registered (stored) in the data file is transmitted online to the interactive terminal 4 via the transmission circuit. The interactive terminal 4 is connected to the host computer 1 and performs online collaborative CAD,
Create CAM data (work procedure data, interference check). The CAM data created by the interactive terminal 4 is input to a floppy disk by the interactive terminal 5. Furthermore, set the floppy disk in microcomputer 6 and use CA.
Convert M data to N/C data. The obtained N/C data is transferred to the NG control device 7.

NG, the control device 7 controls the fully automatic bending machine 8 based on the N/C data. The fully automatic bending machine 8 fully automatically performs processes such as marking on the pipe, beveling, polishing the pipe end, cutting, and three-dimensional bending.

The specific structure of the fully automatic bending machine 8 is shown in FIG. The pipe chuck device 9 is installed on the upper surface of a guide table 19 provided on the base 18 so as to engage with a guide groove 20 provided in the guide table 9. A stamping machine 10 is mounted on a pedestal 18 across a guide table 19. A part of the bender is composed of a booster device 11, a bender head 12, and a bender arm 13, and is arranged beside the guide table 19 on an extension line of the guide table 19 in the longitudinal direction. The booster device 11 grips the pipe and moves in the direction of the extension of the guide groove 20.

The bender head 12 and the bender arm 13 are provided facing each other. The bender head 12, which has a circular horizontal cross section, is rotatable. The bend dome 13 moves in the circumferential direction of the bend dod 12. The booster device 11, the bender head 12, and the bender arm 13 are
The guide table 19 is installed on a movable table 21 provided on the pedestal 18 so as to be movable in a direction perpendicular to the longitudinal direction of the guide table 19.

A cutting machine 14, a tube end polishing machine 15, and a beveling machine 16 are provided on a movable table 22 movably installed on a pedestal 18 beside a part of the bender. The moving table 22 is
It moves in the longitudinal direction of the guide table 19. The piping support means 17 is installed on the moving table 22 provided on the moving table 22. The moving table 22 moves in the same direction as the moving table 22.

FIG. 3 shows a processing procedure executed through cooperation between the interactive terminal 4 and the host 1 to the computer 1. The processing procedure shown in FIG. 3 is stored in the memory (not shown) of the host 1 to computer 1, and is called and executed based on an instruction from the interactive terminal 4.

A construction drawing number is input from the interactive terminal 4. Based on the input construction drawing number, the host computer 1 selects the corresponding spool drawing from the data file. An operator at the site inputs data such as diameter, material, wall thickness, etc. from the interactive terminal 4.

The host computer 1 determines whether or not the selected drawing has been changed based on input data such as the aperture.

If it is determined that the drawing needs to be changed, the CAM data is changed based on the input data such as diameter, material, wall thickness, etc. If it is determined that the drawing does not need to be changed, CAM data is created based on the graphic data of the selected spool drawing (not shown). If it is determined that the drawing does not need to be changed or if the CAM data has been changed, the operator can use the interactive terminal 4 to select either one bend or double turn, as well as the direction of the start. specify. These inputs and CAM data (number of bends for each spool, diameter, spool material length, bending tolerance bending angle correction value, length of each pipe, bending angle, solid angle, booster (pushing force from the rear of the pipe, compressive force) ) or beveling and tube end polishing direction), the host computer 1 selects an appropriate work procedure from the work procedures shown in FIG. 4 or 5. The CAM data is obtained by processing the bending shape data (three-dimensional data) of the spool diagram. The aforementioned work procedure is stored in a data file. Fig. 4 shows the work procedure in the case of facing the river, and Fig. 5 shows the work procedure in the case of double bending. Once the machining procedure is determined, an interference check is performed based on the machining procedure by pipe bending simulation. If it is determined through this simulation that there is no interference, the bending method, crab start direction, and CAM data are registered in the data file of the host computer 1 and in the floppy disk (F/D). If it is determined in the bending simulation that interference occurs, the method of bending is changed (for example, double-sided bending or reverse bending) and rechecked. If it is determined that no interference occurs after this recheck, the above-mentioned host computer 1 and F
/D is registered. If interference still occurs after rechecking, bending of the piping becomes impossible and the drawings are changed.

The above-mentioned interference check will be explained in detail.

In this interference check, in order to continuously digest thousands of spools online, we need to 1) speed up the processing to improve responsiveness, 2) check actual measurement errors in bending space data, processing errors, and check the accuracy of piping during processing. Elements such as deflection need to be on the safe side. As shown in FIG. 6, in the piping model, the piping is treated as a line 30 without substance. The line 30 is placed on the piping center line, and check points 31 for interference check calculation are generated at predetermined intervals on the line. Further, when the piping is modeled as described above, there may be cases where the checkpoint 31 does not interfere, but the actual piping does, as shown in FIG. To avoid such problems,
It is necessary to set the machining space narrower by the value of A so as to frame the machining space. Note that A is expressed by equation (1).

A=Max(D/Z, 1/2 E(D+L), ff/2
LO<θ≦π/2 where A is the distance to the wall, D is the diameter of the pipe, and L is the distance between checkpoints.

If a flange is attached to the tip of the pipe, it is treated as a sphere whose diameter is the circumscribed circle of the flange.

If the above is done, the checkpoint 31 may not interfere, but the reverse will not occur. Additionally, the spool processing process can basically be divided into an extrusion process/rotation process/bending process. Each process is performed on either the horizontal or vertical cross section at the checkpoint in the machining space.
This is a method of checking for interference by checking for the presence or absence of intersections with the piping trajectory. This is an extremely simple method as shown in FIGS. 8(A) to 8(C).

FIG. 9 is an example of an image displayed on the screen of the interactive terminal 4 when it is determined in the bending simulation of FIG. 3 that no interference occurs. In the figure, S is the bending start.
E is the bending end side, and regarding the interference check, if processing is possible without any problems, please enter 5UCC in the message in the upper right column of the diagram.
ESSFULEND (success) is displayed. Furthermore, in the data on the right side of the figure, L indicates the length of the straight portion of the pipe, B indicates the bending angle, and G indicates the rotation angle of the pipe. 10th
The figure shows an example of what is displayed on the screen when interference occurs during interference checking. FAI for message
LEND (failed) is displayed. Further, at this time, the DON mark in the figure indicates that the piping in the direction toward the start side is interfering with the device during the second bending.

When an image as shown in FIG. 9 is displayed on the screen of the interactive terminal 4, each data shown in the image is registered in the F/D. The data registered in this F/D is called by the microcomputer 6, and based on that data, the NG control device 7 controls the fully automatic bending machine 8 so as to achieve the predetermined specifications according to the predetermined work procedure. Perform piping work. That is,
A pipe chuck device 9 grips the pipe and advances the pipe to the stamping machine 1o. The stamping machine 1o stamps the pipe according to the specified specifications. Thereafter, the pipe chuck device 9 moves further forward and grips the pipe with the booster device 11, bender head 12, and bender arm. and booster device 1
1 applies force from behind, the bender arm 13 moves 14) along the bender head 12 to a specified bending angle position. Next, after the pipe support means 17 grips the pipe, the cutting machine 14 ascends to cut the pipe.

Furthermore, the pipe end polishing machine 15 or bevel processing machine 16 performs pipe end polishing or bevel processing on the end surface of the pipe processed according to the specified data, and the automatic processing ends. Note that the tube end polishing machine 15 or the beveling machine 16 may process the pipe end face on the bending start side based on specified data, and in this case, the tube end polishing machine 15 and the beveling machine 16 It can be rotated.

According to this embodiment, the CAM is executed using a remote terminal connected online to a host computer in the factory based on the shape data of the piping system diagram of the plant created by CAD in the factory. It is possible to create data, determine the work procedure for pipe bending, and check whether or not there will be interference between the pipe and the bending machine or other objects when bending the pipe with a bending machine based on the work procedure. Since this can be checked, the efficiency of pipe bending work is improved. Further, since the CAD data can be filed and the host computer in the factory can be used at the site, drawing changes and CAM data changes can be easily carried out at the site. Furthermore, the host computer can automatically determine the work procedure for single-sided or double-sided bevelling.

〔Effect of the invention〕

According to the present invention, it has become possible for the system to easily determine work procedures and interference checks based on pre-input data, which saves time and time during bending that was previously required for humans to make these decisions. The wasted work of remanufacturing piping due to interference with the system has been eliminated, and the efficiency of the work itself has been greatly improved.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of a fully automatic pipe bending system which is a preferred embodiment of the present invention, Fig. 2 is a perspective view of the fully automatic bending machine shown in Fig. 1, and Fig. 3 is a host shown in Fig. 1. An explanatory diagram of a processing procedure executed by cooperation between a computer and an interactive terminal 4, FIGS. 4 and 5 are conceptual diagrams of creating a pipe bending procedure, and FIG. 6 is an explanatory diagram showing a piping model and check points. Figure 7 is an explanatory diagram showing the safety of the piping model, Figure 8
Figures (a) to (c) are explanatory diagrams of the interference check, Figure 9 is an explanatory diagram of the image displayed on the screen of the interactive terminal 4 when no interference occurs in the bending simulation, and Figure 10 is the bending simulation. 11 and 13 are perspective views of bent pipes, and Fig. 12 shows the conventional pipe bending process. It is an explanatory diagram. DESCRIPTION OF SYMBOLS 1... Host computer, 2-5... Interactive terminal, 6... Microcomputer, 7... NC control device, 8... Fully automatic bending machine, 9... Pipe chuck device, 10 ... Stamping machine, 11... Booster device,
12... Bender head, 13... Bender arm, 14... Cutting machine. Figure 5〉Mora Kuchi Go Figure ¥1) 8 Kuchi 1... Nishi r - Responsible Atsushi (2 Kuchi)

Claims (1)

[Claims] 1. A computer containing CAD data, an interactive terminal located at a work site remote from the computer and connected online to the computer, and a piping processing machine, the computer comprising: Select the corresponding graphic data based on the drawing number input on the terminal, and modify if the graphic data corresponding to the drawing number needs to be changed based on the piping specification data input on the terminal. CAM data is created, a machining procedure is determined based on this CAM data, and an interference check is performed by a pipe bending simulation based on the obtained machining procedure, and the pipe processing machine is used to detect interference in the simulation. A fully automatic piping processing system characterized in that the system is controlled based on the CAN data determined to be absent.