JP2008221246A - Method and apparatus for applying three-dimensional experimental simulation to plastic working - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for evaluating and checking a working process designing, a die-designing or a countermeasure of working defect, etc., after obtaining the inner part deforming information of complicated shape parts applying three-dimensional plastic deformation. <P>SOLUTION: A model die is used and a model material resembled with the deforming characteristic of a metallic material is used, and the model material embedding a gage mark is plastic-worked with the model die. The movement of the gage mark is picked up as one image by switching at one scene in the image at the timing in the irradiation with radiation from two directions forming a parallax and thereafter, the three-dimensional coordinate of the gage mark is calculated in arbitrary plastic working step from the working start to the working finish, from the two-dimensional gage mark image in two direction forming the parallax, and the gage mark data and the model die shape data are piled up and indicated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention obtains internal deformation information of complex-shaped parts that deform three-dimensionally in plastic processing such as forging and extrusion, and evaluates and examines processing process design, mold design, or countermeasures for processing defects, etc. The present invention relates to a method and apparatus for three-dimensional experimental simulation of plastic working for the purpose.

  Conventionally, evaluation and examination of machining process design and mold design by plastic working of complex shape parts that deform three-dimensionally have been performed as follows.

(1) Evaluation / examination based on actual prototype results Select the material to be processed and the processing equipment for the designed complex shape parts, and design the processing process and the corresponding mold. Next, in order to determine the appropriateness of the machining process design and the mold design, the mold was actually manufactured and actually prototyped, and the quality was judged from the result. However, this method often relies on the past experience and intuition of the skilled engineer to judge the quality of the result, and numerical data for objectively judging where to improve cannot be obtained. In addition, the trial production was repeated several times, which required a lot of time and cost. In addition, after trial and error by a skilled engineer, even if the optimized result is finally obtained, the process cannot be systematized. Could not be applied to.

(2) Evaluation / examination by computer simulation There is a method of analyzing and evaluating / determining the deformation process of a work material using a computer simulation technique by numerical mechanics using a finite element method. This method requires various complicated boundary conditions, input conditions, and the like when performing analysis. In particular, if various conditions are introduced into the analysis in consideration of the influence on the mold, the calculation process becomes complicated and inefficient. Such a condition is only an assumption for a completely new process. In addition, since the contact conditions and friction conditions between the workpiece and the mold, which change from moment to moment, are assumed to be constant values, results that differ greatly from actual phenomena may be obtained, and reliability is lacking. It is used only as a guideline. In addition, in the case of a complex shaped part that deforms three-dimensionally, the analysis time takes several days to one week, and there is no way to verify the validity of the obtained results. Furthermore, it is difficult to completely eliminate mistakes in setting conditions, and it has been necessary to reset the conditions and modify the analysis program in accordance with the actual phenomenon.

(3) Evaluation / examination by experimental simulation using model materials Visualization of material deformation is performed by simulation experiments using model materials such as oil clay and resin models that show deformation characteristics similar to those of metal materials. There are methods for evaluation and examination (for example, see Patent Document 1 and Non-Patent Document 1). Patent document 1 is intended for plane strain and axisymmetric parts, and it is impossible to visualize the deformation phenomenon inside the material of a complex shaped part accompanied by three-dimensional deformation. In addition, since the processing from the start to the end of processing is divided into predetermined processing amounts and sequentially processed, it is possible to visualize only the sequential processing steps, and it is not possible to visualize the continuous processing phenomenon. In addition, Non-Patent Document 1 is intended for steady deformation, and stops processing when it becomes steady deformation during plastic processing, takes out the processed product, and identifies the internal deformation by cutting it into a thin layer, In order to cover all processes in unsteady deformation such as forging, it is necessary to stop the processing in many sequential processing stages and cut through a thin layer in each step, so there is a disadvantage that it takes a lot of time and cost there were.

Japanese Patent No. 3345662 Yoshida, Ito, “Analysis of strain (velocity) and stress by Visioplasticity”, Journal of Japan Society for Technology of Plasticity, Vol. 33, No. 379 (1992-1) P34-39

  When machining a complex shape part that is plastically deformed three-dimensionally, if the machining process or mold design is not appropriate, the metal material will not fill the mold, and the surface of the workpiece may be caused by material instability. Defects such as entrainment occur. In order to elucidate the cause of these defects, it is necessary to visualize in real time the state of internal deformation of a molded article that changes from moment to moment, but there is a problem that it is difficult with the prior art.

  The present invention has been made in view of the above problems in the prior art, and an object of the present invention is to provide a method and an apparatus for continuously visualizing the internal deformation of a complex-shaped part that is three-dimensionally plastically deformed. It is what.

  The method of three-dimensional experimental simulation of plastic working of the present invention uses a model mold and uses a model material similar to the deformation characteristics of a metal material to embed a gauge mark inside the model material of a predetermined shape, The model material loaded in the model mold is continuously plastically processed, and at the same time, the movement of the mark accompanying the plastic processing is determined by the radiation from the two directions forming the parallax, and the timing of radiation irradiation is displayed in one frame of the image. Switching each time and imaging as one video, recording the video, sorting the recorded video into still images for each of two directions forming the parallax, and for each of the two directions forming the parallax A step of calculating the two-dimensional coordinates of the mark at an arbitrary plastic processing stage from the start of processing to the end of processing using the still image classified into two, and the standard separated for each of the two directions forming the parallax. The three-dimensional coordinates of the target point are calculated at an arbitrary plastic processing stage from the start of processing to the end of processing using the two-dimensional coordinates of the above, and at the arbitrary plastic processing stage from the start of processing to the end of processing, the three-dimensional coordinates From the step of superimposing and displaying the gauge data and the model type shape data in the process, and the step of judging the quality of the processing based on the result of superimposing and displaying the mark data and the model type shape data Thus, the above-described problem is solved.

  In the three-dimensional experimental simulation method for plastic working according to the present invention, the wavelength of radiation is from 1 pm to 10 nm. Thereby, the nondestructive inspection inside the model material can be performed.

  The plastic processing three-dimensional experimental simulation method of the present invention uses a material whose mark is higher in density than the model material and the model mold, and the density difference between the mark and the model material and between the mark and the model mold is 12 grams per cubic centimeter or more. It was supposed to be. As a result, it is possible to obtain a radiographic image of a target with good contrast.

  In the three-dimensional experimental simulation method for plastic working according to the present invention, the model material and the model mold have substantially the same or similar shapes as the shapes of the actual mold and the workpiece material. Thereby, the movement of the target point obtained by the simulation experiment of the model mold and the model material is similar to the deformation inside the material in the process using the metal material as the actual mold and the work material.

  The plastic processing three-dimensional experimental simulation apparatus of the present invention includes a model material in which a plurality of marks are embedded, a model mold for plastic processing of the model material, and a pressure device for plastic processing of the model material, A model type installation table in which the pressurizing device is integrated, a model type installation table rail for moving the model type installation table, and a model type installation table position control device for moving the model type installation table And two radiation generators for imaging the movement of the target accompanying plastic working by forming a parallax, and a radiation irradiation control device that switches the irradiation timing of the two radiation generators for each frame of the image A radiation generator installation table for installing the radiation generator, a radiation generator installation rail for moving the radiation generator installation table, and moving the radiation generator installation table Radiation generator installation table position control device for the above, an image intensifier for converting a radiation transmission image of a target point into an optical image, and an optical image obtained by the image intensifier into an optical image of a predetermined size An optical system for conversion, one radiation TV camera for converting an optical image of a predetermined size converted by the optical system into an analog video signal, a video capture for recording the analog video signal, A program for controlling the position of the model-type installation table and the radiation generator installation table, and the images of the radiation from the two directions forming the imaged parallax are divided into time-series images for each direction as a still image. Two-dimensional coordinates of the mark at any plastic working stage using a program to be stored and a time-series image for each direction in which the parallax is formed A program for arithmetic processing, a program for arithmetic processing of the three-dimensional coordinates from the two-dimensional coordinates of the target point in the arbitrary plastic working stage, an arithmetic processing device in which the programs are stored, the arithmetic processing result and the model type This problem is solved by comprising a display device that displays the shape data in a superimposed manner. The pressurizing device is a hydraulic or electric press.

  In the three-dimensional experimental simulation apparatus for plastic working according to the present invention, the model-type installation base moves in a direction perpendicular to the imaging surface of the radiation TV camera when the radiation TV camera is viewed from directly above. Thereby, the target image imaged by the radiation can be accommodated in the field of view of the radiation TV camera, and can be enlarged or reduced in order to improve the visibility.

  The plastic processing three-dimensional experimental simulation apparatus according to the present invention is configured such that a radiation generator installation table including two radiation generators maintains parallax formation of the radiation generator when viewed from directly above the radiation TV camera. It was decided to move in the same direction or in the opposite direction independently in the horizontal direction parallel to the imaging surface of the radiation TV camera. Thereby, it is possible to change the interval between the two radiation generators so that the transmission image of the target image picked up by the radiation from the two directions forming the parallax falls within the field of view of the radiation TV camera.

The present invention has the following excellent effects.
(1) When machining complex shaped parts that are plastically deformed three-dimensionally, if the machining process or the mold design is not appropriate, the metal material will not fill the mold, and the process may be caused by unstable material flow. Defects such as entrainment of the product surface occur. In order to elucidate these causes, it is possible to continuously visualize the internal deformation of the molded product that changes every moment.
(2) In the visualization of internal deformation of a material by a simulation experiment using one model material in which a target is embedded, a method of forming a parallax with a single focus radiation generator is also conceivable. While only dimensional information can be obtained, the present invention makes it possible to visualize the phenomenon of plastic deformation three-dimensionally in real time with the addition of a time axis.
(3) A numerical calculation model is not required, and simulation can be performed in which the main examination items in machining process design and die design are arbitrarily and widely changed without requiring skill levels such as past experience and intuition.
(4) Since the experimental results include the contact conditions between the work material and the mold, the friction conditions, the boundary conditions, the deformation characteristics of the materials, and the like, a simulation result corresponding to the actual phenomenon can be obtained.

An embodiment of a three-dimensional experimental simulation method for plastic working according to the present invention will be described. The machining process design by the three-dimensional experimental simulation method for plastic working according to the present invention is performed by the processes shown in (1) to (9) of FIG.
(1) The material shape before processing is determined, and the material is manufactured using the model material. A mark having a higher density than the model material is embedded in the material in advance.
(2) Design and manufacture model molds.
(3) An image of the movement of the mark accompanying plastic working is taken with radiation forming parallax.
(4) The three-dimensional coordinates of the mark are calculated using the two-dimensional coordinates of the mark in the parallax image obtained at an arbitrary time.
(5) Display a superposed image of a gauge and a model type on the display device.
(6) The quality of processing is determined. If the determination is good, the design ends. In the case of a negative determination, one or more of the following (7) to (9) are performed, and this is repeated until a good determination is obtained.
(7) Change the material shape with reference to the result of (6), and return to (1).
(8) Change the shape of the model type with reference to the result of (6), and return to (2).
(9) Change the processing conditions with reference to the result of (6), and return to (3).

  Data for calculating the three-dimensional position of a gauge point affected by the above method even in machining in which the deformation characteristics of the model material or the friction distribution between the model material and the model mold changes every moment. Therefore, visualization according to the actual phenomenon can be performed, and high reliability can be expected. As described above, according to the three-dimensional experimental simulation method for plastic working according to the present invention, it is possible to easily perform simulation in which the main examination items in the machining process such as the tool shape, the lubrication condition, and the material shape are arbitrarily changed over a wide range. Can be implemented.

Next, a three-dimensional experimental simulation apparatus for plastic working according to the present invention will be described with reference to FIGS. The three-dimensional experimental simulation apparatus 40 for plastic working according to the present invention includes:
(A) radiation generators 11a and 11b arranged at positions where parallax is formed, radiation generator installation bases 12a and 12b for installing the radiation generators 11a and 11b, and radiation generator installation bases 12a and 12b The radiation generator installation table rail 13 for moving the radiation TV camera in a lateral direction parallel to the imaging surface of the radiation TV camera when viewed from directly above, and irradiation timings of the two radiation generators 11a and 11b The radiation irradiation control device 14 for switching the image for each frame of the image, and the radiation generator position control device 15 for controlling the positions of the radiation generator installation bases 12a and 12b on the radiation generator installation rail 13 A mechanism unit 10;
(B) A material 21 made of a model material, a resin model die 22 for plastic processing of the material 21, a pressurizing device 23 that performs a pressing function, and a metal mark 24 that is an object of radiation imaging. A model type installation table 25 for installing the model type 22, a model type installation table position control device 28, a rail 26 for the model type installation table for moving the model type installation table 25 in the radiation direction, and a material A pressurizing mechanism unit 20 comprising a punch 29 for pressurizing 21;
(C) An image intensifier 31 that converts a radiographic image of the mark 24 into an optical image, an optical system 32 that converts an optical image obtained by the image intensifier 31 into an optical image of a predetermined size, and optical A radiation TV camera 33 that converts an optical image of a predetermined size converted by the system 32 into an analog image signal, a video capture 34 for recording the image, and an arithmetic processing unit 36 in which various processing programs 35 are stored. And a data processing mechanism unit 30 including a display device 37 that displays the calculation processing result and the shape data of the model mold 22 in a superimposed manner. (The defensive wall that protects against radiation exposure is not shown)

  Using the three-dimensional experimental simulation apparatus 40 for plastic working according to the present invention, the deformation characteristics (slope of stress-strain curve, that is, the N value) of the metal material are reproduced (the N value is the same) at the mold design stage. ) By using commercially available plasticine (oil clay), color clay (oil clay), and Filia (wax) as model materials, it is possible to easily examine the shape of the material and the formability in a short period of time. Can do.

  Here, the frame configuration of the images of the plurality of target points 24 that are transmitted and photographed with the radiation of the radiation generators 11a and 11b will be described with reference to FIG. An image of the radiation TV camera 33 of the target 24 taken by the radiation irradiation control device 14 that switches the irradiation timing of the radiation generators 11a and 11b for each frame of the image is displayed on the radiation TV camera 33 for each frame of the image. 11a is irradiated with radiation, and the image 50a of the captured target 24 is irradiated with the radiation generator 11b. The captured image 24b of the captured target 24 is alternately displayed in time series 51a, 51b, 52a, 52b,.・ It is paid as follows. Here, since one frame of the video by the NTSC signal is 1/30 second interval, it is possible to specify the moving time of the mark in the processing, and it is possible to calculate the moving speed of the mark 24.

Data processing in the three-dimensional experimental simulation method for plastic working according to the present invention is performed according to the processes shown in FIGS.
(1) A parallax image of a plurality of target points 24 embedded in a model material is obtained as one image by radiation from two directions by the radiation irradiation control device 14 that switches the irradiation timing for each frame of the image. Is recorded by video capture and stored in the arithmetic processing unit 36.
(2) A parallax image due to radiation from two directions forming a parallax is segmented for each frame and stored as a time-series still image.
(3) The two-dimensional coordinates of all the reference points 24 in the time-series still image are calculated. Note that this processing may substitute for the barycentric coordinate search function of the image processing software.
(4) The three-dimensional coordinates are calculated from the two-dimensional coordinates of the mark 24 in the time-series still image forming the parallax.
(5) The three-dimensional data of the target 24 and the model-type three-dimensional shape data are superimposed on the display device and displayed in time series.
The processing after (5) is as shown in FIG. 1 (6).

  The calculation processing procedure of the three-dimensional coordinates of the reference point 24 in the plastic processing three-dimensional experiment simulation method according to the present invention will be described with reference to FIG. In this calculation, in addition to the imaging 27 a and 27 b of the target point 24, the known position information of the radiation generators 11 a and 11 b and the imaging surface 38 of the radiation TV camera 33 is used.

  In FIG. 6, f1 is the focal point coordinate of the radiation generator 11a, f2 is the focal point coordinate of the radiation generator 11b, a is the coordinate of the target point 24 to be obtained, and a1 is the target point imaged by the radiation emitted from the radiation generator 11a. The coordinates of the transmission image on the imaging surface 38 of the radiation TV camera 33 of 24, a2 is the coordinates of the transmission image on the imaging surface 38 of the radiation TV camera 33 of the target 24 imaged by the radiation irradiated from the radiation generator 11b. , O indicates the origin (0, 0, 0).

  Here, the focal coordinates f1 and f2 are f1 (−L / 2, 0, F), where L is the distance between the focal points, and F is the distance between the radiation generator 11a and the imaging surface 38 of the radiation TV camera 33. It is expressed as f2 (L / 2, 0, F). Further, a1 (X1, Y1, 0) and a2 (X2, Y2, 0) are set, and a desired coordinate a is set to a (X, Y, Z).

In the above coordinates, a straight line passing through f1 and a1 is expressed by the following equation.
A straight line passing through f2 and a2 is expressed by the following equation.
Substituting basic coordinates into (1) and (2) establishes the following relationship.
If the X coordinate is arranged from the relationship of (3) and (4), the following relationship is established.
The coordinates a obtained from the above relationship are as follows.

  As an example of the three-dimensional experimental simulation method for plastic working according to the present invention, the result of visualizing the forging phenomenon of the helical gear will be described. The processing target is the helical gear 60 shown in FIG. 7, and has a cylindrical portion 61 and a gear portion 61 a that deforms three-dimensionally.

In the simulation experiment, a commercially available Filia (wax) capable of reproducing the deformation characteristics (slope of the stress-strain curve, that is, the N value) of the metal material (with the same N value) was used as the model material. Other model materials such as plasticine (oil clay) and color clay (oil clay) may be used. FIG. 8 shows a Filia (wax) material before processing. The material was manufactured according to the following procedures (1) to (6).
(1) The melted Filia (wax) is well kneaded, and the Filia (wax) is poured into the hollow portion of a metal cylindrical frame made according to the shape of the material.
(2) Apply vibration to the cylindrical form to remove bubbles in Fila (wax).
(3) Hold Fila (wax) in an environment of −20 ° C. for about 1 hour, and when Fila (wax) contracts, remove Fila (wax) that has become columnar from the cylindrical form.
(4) Cylindrical Fila (wax) is divided in half by a plane passing through the central axis to form two semi-cylindrical materials 71 and 71a.
(5) A plurality of spherical marks 24 made of cemented carbide with a diameter of 1 mm are arranged at equal intervals of 4 mm on the divided surface of the half-divided half-cylinder material 71. In addition, the arrangement | positioning of the mark 24 may mix | blend Filia (wax) and a mark simultaneously at the time of a fusion | melting, and may be arbitrarily embedded in a model material.
(6) The split surfaces of the semi-cylindrical materials 71 and 71a are combined to form a helical gear pre-processing material 70.

  The model type used for the simulation experiment is shown in FIG. In manufacturing the model mold, two-component epoxy resin was poured into a mold and cured, then taken out from the mold and cut into a predetermined dimension. The resin-made helical gear molding model die 84 was inserted into the resin case 83, and the resin pressure receiving plate 85 was placed below the helical gear molding model die 84.

  The material 70 before processing was loaded into a helical gear molding model die 84 and processed by a punch 82 installed on a ram 81 of a pressurizing device having a maximum load of 9.8 kN. Processing was carried out continuously under the condition of a pressing speed of 1 mm / s from the start of processing to the end of processing. Vaseline as a lubricant was thinly and uniformly applied to the helical gear molding model 84. During deformation, the radiation generators 11a and 11b using soft X-rays as the radiation source emit radiation at 90 kV and 80 μA, and the three-dimensional coordinates of the target point 24 are obtained from data obtained by capturing a transmission image of the target point 24. Calculated.

  An example of a radiation transmission image obtained in a simulation experiment is shown in FIG. In addition, the white point corresponding to the mark 24 in the figure is an image processed for easy visibility. From FIG. 10, it can be confirmed that the mark 24 spreads as the helical gear portion 61a is formed.

  FIG. 11 shows the result of calculating the three-dimensional coordinates of the mark 24 based on the radiation transmission image obtained in the simulation experiment and displaying it on the display device. From FIG. 11, the three-dimensional state inside the material can be clearly confirmed.

  The above-mentioned invention is for obtaining, evaluating and examining basic data such as machining process design or mold design or countermeasures for machining defects of complex-shaped parts deformed three-dimensionally in plastic working such as forging and extrusion. Is available.

Functional explanatory diagram of 3D experiment simulation method of plastic working Top view of 3D experimental simulation equipment for plastic working Side view of the pressurization mechanism of a three-dimensional experimental simulation device for plastic working Video composition diagram of a gyroscope taken through radiation Data processing flow diagram in 3D experimental simulation method of plastic working Explanatory drawing for 3D coordinate calculation of gage Helical gear used in the example Wax material before processing used in the examples Model type used in the examples Radiation transmission image of the target imaged in the example Display results of the three-dimensional data of the target points calculated in the embodiment on the display device

Explanation of symbols

10 Radiation mechanism part 11a Radiation generator (L)
11b Radiation generator (R)
12a Radiation generator installation stand (L)
12b Radiation generator installation stand (R)
DESCRIPTION OF SYMBOLS 13 Radiation generator installation table rail 14 Radiation irradiation control device 15 Radiation generator position control device 20 Pressurization mechanism part 21 Material 22 Model type 23 Pressurization device 24 Marking point 25 Model type installation table 26 Model type installation table rail 27a Imaging the gauge (L)
27b Image of the target (R)
28 Model Type Installation Table Position Control Device 29 Punch 30 Data Processing Mechanism Unit 31 Image Intensifier 32 Optical System 33 Radiation TV Camera 34 Video Capture 35 Various Programs 36 Arithmetic Processing Device 37 Display Device 38 Imaging Surface of Radiation TV Camera 40 3D experiment simulation apparatus for plastic working 50a First frame of parallax image of the target point by the radiation generator 10a 50b First frame of parallax image of the target point by the radiation generator 10b 51a The parallax image of the target point by the radiation generator 10a Second frame 51b Second frame of the parallax image of the mark by the radiation generator 10b 52a Third frame of the parallax image of the mark by the radiation generator 10a 52b Third frame of the parallax image of the mark by the radiation generator 10b 60 Helical gear 61 Cylindrical part of helical gear 61a Helicopter Semicylindrical material 71a semicylincrical material 80 simulation modeling used in the experiments of arranging the gear portion 70 before processing material 71 gauge marks Rugiya 81 press ram 82 punch 83 Case 84 helical molding modeling 85 pressure receiving plate

Claims (8)

  Using a model mold and using a model material similar to the deformation characteristics of a metal material, embedding a gauge point inside the model material of a predetermined shape, and continuously loading the model material loaded in the model mold A step of performing plastic processing, and simultaneously imaging the movement of the mark accompanying the plastic processing as a single image by switching the timing of radiation irradiation for each frame of the image by radiation from two directions forming a parallax; The process of recording the video, the process of separating the recorded video into still images for each of two directions forming a parallax, and processing from the start of processing using the still images sorted for each of the two directions forming the parallax Arbitrary processing from the start of processing to the end of processing using the two-dimensional coordinates of the target point, which is divided for each of the two directions forming the parallax, and the step of calculating the two-dimensional coordinates of the target point at any plastic processing stage until the end The process of calculating the 3D coordinates of the mark at the plastic working stage, and the mark data at the 3D coordinates and the model shape data are superimposed and displayed at any plastic working stage from the start of machining to the end of machining. A three-dimensional experimental simulation method for plastic working, comprising: a step of determining the quality of processing based on a result of superimposing and displaying the gage data and model shape data.   The three-dimensional experimental simulation method for plastic working according to claim 1, wherein the wavelength of the radiation is from 1 pm to 10 nm.   The three-dimensional experimental simulation method for plastic working according to claim 1, wherein the reference point is made of a model material and a substance having a higher density than the model mold.   2. The three-dimensional experimental simulation method for plastic working according to claim 1, wherein the density difference between the gauge point and the model material and between the gauge point and the model mold is 12 grams per cubic centimeter or more.   2. The three-dimensional experimental simulation method for plastic working according to claim 1, wherein the model material and the model mold have substantially the same or similar shapes as the shapes of the actual mold and the workpiece material. .   A model material in which a plurality of marks are embedded, a model mold for plastic processing of the model material, a pressure device for plastic processing of the model material, and a model mold installation base in which the pressure device is integrated A model type installation table rail for moving the model type installation table, a model type installation table position control device for moving the model type installation table, Two radiation generators for forming and imaging, a radiation irradiation control device for switching the irradiation timing of the two radiation generators for each frame of an image, and radiation generation for installing the radiation generator A radiation generator installation table, a radiation generator installation table rail for moving the radiation generator installation table, a radiation generator installation table position control device for moving the radiation generator installation table, An image intensifier for converting a transmission image into an optical image, an optical system for converting an optical image obtained by the image intensifier into an optical image of a predetermined size, and a predetermined size converted by the optical system One radio TV camera for converting the optical image into an analog video signal, a video capture for recording the analog video signal, and the positions of the model type installation table and the radiation generator installation table are controlled. A program, a program for cutting and storing a captured image of radiation from two directions forming a parallax as a time-series image for each direction as a still image, and a time-series image for each direction forming the parallax And a program for computing the two-dimensional coordinates of the mark at an arbitrary plastic working stage, and at the arbitrary plastic working stage A program for calculating the three-dimensional coordinates from the two-dimensional coordinates of the reference point, an arithmetic processing device storing the program, and a display device for displaying the arithmetic processing result and model-type shape data in a superimposed manner A three-dimensional experimental simulation apparatus for plastic working, characterized in that   The three-dimensional experimental simulation of plastic working according to claim 6, wherein the model-type installation base moves in a direction perpendicular to the imaging surface of the radiation TV camera when the radiation TV camera is viewed from directly above. apparatus.   The two radiation generator installation stands can be viewed in the same direction independently in the horizontal direction in parallel with the imaging surface of the radiation TV camera while maintaining the parallax formation of the radiation generator when viewed from directly above the radiation TV camera. The three-dimensional experiment simulation apparatus for plastic working according to claim 6, wherein the apparatus moves in the reverse direction.