JP5577263B2 - Hull block mounting accuracy prediction system, method and recording medium thereof - Google Patents

Description

  The present invention relates to a hull block mounting accuracy prediction system, method, and recording medium thereof, and more specifically, before a mounting block or the like is directly mounted, a dimensional deviation of the hull block or the like to be combined is calculated in advance by a program and mounted. The present invention relates to a technique for optimizing the size of a block so that the mounting block can be mounted on a reference block in only one mounting process.

  Marine structures including ships are usually assembled by cutting, processing, and welding accessories such as metal thick tubes, square bars, wire rods, and design materials. In the case of a ship, more than 100 blocks are assembled and completed. In order to complete the hull, according to the assembly order, the thick plate, which is a kind of metal plate material, is first processed and cut according to the design plan, then welded to the already assembled hull part, and then in the following order. Weld the thick plate. Since each block constituting the hull is considerably large in size and made of metal, the outer shape can be deformed through a process of cutting, processing and welding. That is, the outer shape may be different from the design plan. Therefore, when assembling the hull, after actually measuring the dimensions of the reference block and mounting block already assembled on the hull with the joint surface as the center, re-work the mounting block using the measurement results, Weld to the block. In the following, “reference block” means a hull block already assembled in the hull, and “mounted block” means a hull block coupled to the “reference block”.

With reference to FIG. 1, a conventional process for predicting the mounting accuracy of a hull block will be described.
Conventionally, an operator measures a main part where a reference block is joined to a mounting block with an optical wave measuring instrument (1), and measures a main part where the mounting block is joined to the reference block with an optical wave measuring instrument. (2). The light wave measuring device measures the three-dimensional coordinates of the measurement point focused by the operator, and the measurement data corresponding to the coordinate values of the three-dimensional coordinates is stored in a PDA (Personal Digital Assistant).
After reading the measurement data of the reference block and the measurement data of the mounted block from the PDA, the computer compares the measurement data, calculates a deviation between each measurement point, and outputs it to the text base (3).

Thereafter, the worker outputs the design drawing of the mounting block, and then directly displays the three-dimensional numerical value displayed in the text on the design drawing by hand to complete the mounting accuracy report (4). The operator must use the concept of empirical space to match the 3D numerical value to the mounting block to understand the degree of deformation of the mounting block, and display the 3D numerical value directly on the 2D mounting accuracy report by hand. Therefore, a high level of skill of the worker is required in reality.
By using the mounting accuracy report, it is possible to cut the mounting block and rework the mounting block, and the rework accuracy of the mounting block is determined according to the accuracy of the mounting accuracy report.

  Considering the mounting process, conventionally, the mounting block is lifted by a crane and positioned on the joint surface of the reference block of the hull, and the reference block and the mounting block are used by using a scaled scale in a temporarily connected state. The dimensional coupling state of the joint surface between the two is actually measured. Next, after cutting the mounting block using the actual measurement result, the mounting block is again positioned on the joint surface of the reference block with a crane to confirm the coupling state. If the measurement result in the state where the mounting block is temporarily connected to the reference block becomes inaccurate, the mounting block mounting process using a crane must be repeated several times in order to ensure the mounting accuracy of the mounting block.

Thus, the conventional hull block mounting technology has the following drawbacks.
First, since the operator directly predicts the mounting accuracy using only the coordinate values for the three-dimensional solid, the skill level of the worker is necessarily required.
Second, since there are many parts that depend on the skill level of the worker, considerable time and cost are required to improve the skill level of the worker.
Third, since the operator directly makes predictions with three-dimensional coordinate values, it is not easy to manage the numerical values of the mounted blocks for blocks having a complicated shape.
Fourth, it is possible to predict the mounting accuracy only for two blocks based on the joint surface, and automatically determine whether the deviation corresponding to the prediction result is a gap or an overlap. There is an inconvenience that you can't.
Fifth, in the block mounting process of the hull, the mounting block is assembled using a crane or the like according to the conditions at the site. Will increase. In the case of cranes currently used on site, considerable additional costs are incurred as the usage time increases.

In addition, when performing measurement and cutting work in the mounted state, it takes a long time, is inaccurate, and is not safe.
In order to solve the above-mentioned problems, the development of technology to measure and manage the dimensions of the reference block and the mounting block accurately and complete the block mounting process with only one ground processing and mounting is urgently required. It has been demanded.

The present invention outputs a three-dimensional diagram for the reference block and the mounting block on the monitor, compares the measured value of the reference block with the measured value of the mounted block with respect to the coupling surface of the reference block and the mounting block, and the deviation It is an object of the present invention to provide a method for automatically creating a mounting accuracy report indicating a deviation corresponding to a mounting accuracy prediction result on the mounting block after calculating the mounting accuracy.
Another object of the present invention is to improve the mounting accuracy of the mounting block, thereby reducing the time of the mounting process using a crane and simplifying the hull block mounting and the welding process.

  A hull block mounting accuracy predicting system according to the present invention receives a command for predicting hull block mounting accuracy from an operator, a user interface showing a result of executing the command in three-dimensional graphics, a reference block, and a mounting Provided is a design file storage unit for storing a design file for a block, and a check sheet displaying a management point for the reference block and a management point for the mounted block in conjunction with the user interface, and the reference block A measurement point for the mounting block and a measurement point for the mounting block are compared with each other, and a mounting accuracy prediction unit that provides a completion check sheet based on the deviation, and a measurement point on the reference block under the control of the mounting accuracy prediction unit Etc., and the measurement points of the mounted blocks Constructed and a block file storage unit but the coupling block files are stored.

  Preferably, the mounting accuracy prediction unit according to the present invention indicates a management point selected in the design file of the reference block selected by the user interface, and combines the management point etc. with the design file to generate a block file. After the generation, the block file can be stored in the block file storage unit.

  Preferably, the mounting accuracy prediction unit according to the present invention matches the measurement points to the control points combined with the block file of the reference block, and then combines the measurement points with the block file to store the block file. Can be stored in the department.

  Preferably, the mounting accuracy prediction unit according to the present invention indicates a management point or the like selected for the mounting block selected by the user interface, and a block file in which the management point or the like is combined with the mounting block is displayed as the block file. It can be stored in the storage unit.

  Preferably, the mounting accuracy prediction unit according to the present invention matches the measurement points to the control points combined with the block file of the mounted block, and then combines the measurement points with the block file to store the block file. Can be stored in the department.

  Preferably, the mounting accuracy prediction unit according to the present invention compares a measurement point or the like combined with the block file of the reference block with a measurement point or the like combined with the block file of the mounting block, and the comparison result The corresponding deviation can be shown on the user interface.

  Preferably, the measurement point or the like in the present invention has a three-dimensional coordinate value, and the deviation can be displayed as a three-dimensional vector.

  Preferably, when the mounting block is moved or rotated, the mounting accuracy prediction unit according to the present invention moves a three-dimensional coordinate value such as a measurement point of the mounting block according to the movement or rotation state of the mounting block, and Deviations between the measurement points of the mounted block and the measurement points of the reference block can be recalculated.

  Preferably, the three-dimensional vector of the deviation according to the present invention is displayed with different symbols depending on the degree thereof, and may be displayed so that the overlap or gap state between the two measurement points is distinguished.

  Preferably, the mounting block in the present invention is at least one.

  The hull block mounting accuracy predicting method according to the embodiment of the present invention includes (a) calculating the mounting accuracy of the mounting block by adding the measurement coordinates such as the measurement point of the reference block to the design coordinates such as the management point of the reference block. A process of matching and connecting the measurement point and the like to the reference block; and (b) measuring the measurement point of the mounting block to the design coordinates of the management point of the mounting block in order to measure the mounting accuracy with the reference block. (C) connecting the reference block and the mounting block, matching the coordinates, and connecting the measurement point and the like to the mounting block, and the measurement point of the reference block and the measurement point of the mounting block And (d) analyzing the deviation of each measurement point based on the comparison result of each measurement point, etc., and comparing each measurement point of the mounting block with each measurement point of the reference block Constructed and a step of calculating a deviation value.

  Preferably, in the step (d) of the present invention, the deviation analysis result for each measurement point is displayed as a three-dimensional vector, and a gap is formed or an overlap is formed at each measurement point of the mounting block. Can be displayed.

  Preferably, the mounting block and the reference block in the present invention are represented by a three-dimensional graphic, and the design coordinates of the reference point and the measurement coordinates of the measurement point are three-dimensional coordinate values.

  Preferably, in the present invention, when the mounting block is moved or rotated after the step (c), a three-dimensional coordinate value such as a measurement point of the mounting block is moved according to the movement or rotation state of the mounting block. The method may further comprise a step of recalculating a deviation between the measurement point of the mounted block and the measurement point of the reference block.

  Preferably, in the present invention, the mounting block is moved by a one-point movement or a two-point movement method, and the mounting block is rotated by one point-axis rotation (displacement), two points-axis rotation (displacement), It can be performed by any one method selected from a point-axis rotation (angle) and a two-point-axis rotation (angle) method.

  Preferably, in the step (b) of the present invention, the connection between the measurement point of the reference block and the measurement point of the mounting block is any of a point name reference connection method, a point position reference connection method, and a manual connection method. This can be done in one way.

  Preferably, the present invention may further include a step of generating a completion check sheet in which a deviation value from the reference block is indicated at each measurement point of the mounting block.

  Preferably, when a management point or the like is selected for the reference block having a three-dimensional coordinate value before the step (a) of the present invention, the management point or the like is combined with the reference block and stored, and the reference The method may further include generating a check sheet in which the coordinate values of each control point of the block are shown.

According to the hull block mounting accuracy prediction system and method according to the present invention, the block mounting accuracy can be accurately predicted based on the three-dimensional reference block and the three-dimensional mounting block. Since there is no need to carry out measurement and cutting work, the work is not only quick and accurate, but also safe.
In addition, since the present invention does not require a high degree of skill in using the 3D graphic-based mounting accuracy prediction system, the work adaptation period can be dramatically shortened and human power can be managed efficiently. There is an effect.

It is the figure which showed the prediction process of the mounting accuracy of the hull block based on the prior art. It is the figure which showed the prediction system of the mounting accuracy of the hull block which concerns on this invention. It is the figure which showed the output example of the mounting precision prediction program screen used for the prediction system of the block mounting precision of the ship which concerns on this invention. 3 is a flowchart showing a pre-measurement process of a hull block according to the present invention. It is the flowchart which showed the prediction method of the mounting accuracy of the hull block which concerns on this invention. It is the figure which showed the example of a display of the measurement point on the mounting precision prediction program screen which concerns on this invention. FIG. 6 is a diagram illustrating a method of connecting blocks to a point position reference according to the present invention. FIG. 6 is a diagram illustrating a method of manually connecting blocks according to the present invention. It is the figure which showed the example of the method using the deviation vector based on this invention. It is the figure which showed the example of the method using the deviation vector based on this invention. It is the figure which showed the example of the method using the deviation vector based on this invention. It is the figure which showed the example of the method using the deviation vector based on this invention. FIG. 4 is an exemplary representation of a block moving method according to the present invention. FIG. 4 is an exemplary representation of a block moving method according to the present invention. FIG. 5 is an exemplary representation of a block rotation method according to the present invention. FIG. 5 is an exemplary representation of a block rotation method according to the present invention. It is the figure which showed the structural example of the completion check sheet which concerns on this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 2 is a diagram showing a block configuration of a system to which the hull block mounting accuracy prediction system according to the embodiment of the present invention is applied.
The hull block mounting accuracy prediction system includes a user interface 10, a design file storage unit 12, a mounting accuracy prediction unit 16, and a block file storage unit 14.

  The user interface 10 inputs a command for predicting the mounting accuracy of the hull block, and displays the execution result of the command. The user interface 10 may be configured with a mounting accuracy prediction program screen. As shown in FIG. 3, the screen of the mounting accuracy prediction program may include a graphic work window 30, an analysis work window 32, coordinate axes 33, a legend 34, a tool bar 35, a menu bar 36, and a cursor coordinate display bar 37.

  The graphic work window 30 is an area where various data such as design models, measurement data, and deviation values are displayed in a three-dimensional graphic, and the analysis work window 32 is used to check various data such as design coordinates, measurement coordinates, and deviation values numerically. The coordinate axis 33 is a symbol for confirming the direction of the entire coordinate axis, and the legend 34 is displayed in a hue so that the degree of deviation is displayed via a deviation vector for easy identification of the deviation value. Or it is a symbol which makes it possible to confirm a display symbol. The toolbar 35 is an area where various shortened icons are arranged, and the menu bar 36 is an area where various commands necessary for predicting the mounting accuracy of the hull block are displayed in a menu form. The cursor coordinate indicator 33 is an area where the three-dimensional position of the cursor on the graphic is displayed.

  The design file storage unit 12 stores a three-dimensional design drawing of each block constituting the hull. The three-dimensional design drawing may be a three-dimensional design drawing such as a dxf file, a tropon vol file, an iges file, an igs file, and a sat file.

  The mounting accuracy prediction unit 16 controls the display of the mounting information prediction program screen on which the mounting accuracy prediction program is mounted and displayed on the user interface 10, and the reference block and the mounting block input via the mounting information prediction program screen are displayed. Predict the mounting accuracy of mounting blocks using measurement coordinates. When the operator selects a reference block or mounting block, the mounting accuracy prediction unit 16 displays the selected reference block or mounting block on the graphic work window 30 of the mounting information prediction program screen, and the reference block or mounting block is displayed. Are combined with the management points generated by the operator's selection to generate a block file for the reference block or the mounted block. A plurality of management points must be generated on the joint surface, and the management points have design coordinates. The design coordinates are three-dimensional coordinate values. Thereafter, the mounting accuracy prediction unit 16 creates a check sheet in which the management points are displayed on the mounting blocks.

Further, when the measurement points for the reference block and the mounting block are input, the mounting accuracy prediction unit 16 connects the measurement point to a management point coupled to the reference block and the mounting block, and The mounting accuracy of the mounting block is calculated by comparing the position of the measuring point with the position of the measuring point of the mounting block. The mounting accuracy prediction unit 16 creates a completion check sheet for the mounting block based on the calculation result of the mounting accuracy. The measurement point also has measurement coordinates, and the measurement coordinates are three-dimensional coordinate values.
The design file storage unit 12 stores the block file generated by the mounting accuracy prediction unit 16. The block file may have a form in which a management point is coupled to the block or a form in which a management point and a measurement point are coupled to the block.

Next, a method for predicting mounting accuracy of a hull block according to an embodiment of the present invention will be described with reference to the flowcharts shown in FIGS.
FIG. 4 is a flowchart for explaining the pre-measurement processing operation for the hull block.
When the mounting accuracy prediction program is executed, a screen of the mounting accuracy prediction program is output on the user interface 10.
When an arbitrary block is selected on the mounting accuracy prediction program screen (Yes in S42), the mounting accuracy prediction unit 16 reads the design file of the block selected by the design file storage unit 12, and puts the block on the graphic work window 30. Output (S44).

When the management point generation is selected on the mounting accuracy prediction program screen in a state where the block is output (Yes in S46), the management point selected by the operator is displayed on the block (S48). The management point is a point for performing accuracy control, and is determined based on a position that must be considered when joining with another block. A plurality of management points are preferably set. Control points may be manually selected by the operator, or automatically generated at the corners or critical portions of the block.
Information on the selected management point may be displayed in the analysis work window 32 of the mounting accuracy prediction program screen. The management point information can include a management point name, an x coordinate value corresponding to a design coordinate, a y coordinate value, and a z coordinate value.

When creation of a check sheet is requested in a state where the generation of management points is completed (Yes in S50), the mounting accuracy prediction unit 16 combines the management points with the blocks to generate a block file, and the generated blocks The file is stored in the block file storage unit 14 (S52). The block file includes management point information and is stored. Further, the mounting accuracy prediction unit 16 generates a check sheet in which the management points are displayed on the block (S54).
The check sheet displays the 3D shape of the block and the design coordinates of the control points for reference to the actual measurement of the block, the length between the control points, the block size information, the angle, etc. Used as an auxiliary means of time.

FIG. 4 illustrates a process of generating a management point for a specific block and generating a check sheet for actual measurement. In the present invention, it is preferably performed for each of the reference block and the mounting block. Thereby, the operator should be able to obtain a check sheet for the reference block and a check sheet for the mounting block.
The operator measures the reference block and the mounting block with reference to the check sheet.

  A light wave measuring device can be used for the measurement. First, a measurement origin where measurement starts is determined, and measurement is continuously performed in a certain direction around the reference point. There are various methods for measuring a hull block using an optical wave measuring device, and the measurement can be performed using a conventionally known method. Data such as measurement coordinates of each measurement point measured by the light wave measuring device is stored in storage means connected to the light wave measuring device. As the storage means, a PDA (Personal Digital Assistant) or the like can be used, and the PDA or the like can be connected to an optical wave measuring device by wire / wireless. A file stored in a memory such as the PDA can be read by a computer having a built-in accuracy prediction program built therein. The measurement is performed for each of the reference block and the mounting block.

The operator measures the same position as the management point displayed on the check sheet in the actual block, and manages the measured position at the measurement point. The number of measurement points must be the same as the number of management points displayed on the check sheet, and the measurement point information includes a measurement point name, measurement coordinates, and the like.
The measurement coordinates of the reference block and the measurement coordinates of the installation block can be input to an installation accuracy prediction program to check the installation accuracy of the installation block with respect to the reference block.

FIG. 5 is a flowchart showing a process of predicting the mounting accuracy of the hull block according to the embodiment of the present invention.
When the mounting accuracy prediction program is executed, a screen of the mounting accuracy prediction program is output on the user interface 10.
When the reference block is selected on the mounting accuracy prediction program screen (Yes in S60), the mounting accuracy prediction unit 16 reads the block file of the reference block selected by the block file storage unit 14 and supplies the reference block to the graphic work window 30. Is output (S62).

  When a measurement file is selected on the mounting accuracy prediction program screen (Yes in S64), the mounting accuracy prediction unit 16 reads the selected measurement file from the PDA and outputs each measurement point and the like to the graphic work window 30 (S66). ). Measurement points and the like displayed on the graphic work window 30 are displayed in a state where the positional relationship between the measurement points and the like is maintained.

Next, the mounting accuracy prediction unit 16 matches the measurement point with the management point of the reference block in order to display the measurement point on the reference block (S68).
In the method of matching the measurement point with the management point, the management point and the measurement point are matched after aligning the plurality of management points and the plurality of measurement points. In other words, an operation is first performed in which the management points and the measurement points coupled to the blocks are aligned so as to have a one-to-one correspondence with each other. As shown in FIG. 6, in the process of S66, the graphic work window 30 displays the reference blocks 61 on which the management points 63 are displayed and the measurement points 62 scattered and distributed. At this time, it is difficult for the management point 63 and the measurement point 63 of the reference block 61 to coincide with each other accurately. In particular, when the block is measured and measured independently without being linked to the control point, the position and direction of the design point and the measurement point appear completely different. In such a case, before connecting the management point and the measurement point, an operation of aligning the management point and the measurement point with each other according to a certain standard and making a one-to-one correspondence must be preceded. For example, alignment can be performed using two control points and two corresponding measurement points. Two measurement points to be converted are selected by mouse input or keyboard input in a dialog box. At this time, the first point is the origin, and the second point forms a reference axis that passes through the two points. Next, if two management points corresponding to the measurement points selected above are selected, the measurement points and the like are automatically aligned with the remaining management points. Such a connecting operation can be performed in various ways. The management point and the measurement point can be manually designated and matched one by one, and the matching can be performed based on the position of the point. The method of matching based on the position of a point is that if a numerical range for matching a measurement point and a management point is input, the management point and the measurement point are matched by matching only the points within the numerical range. Is done. When the alignment is completed so that the management point-measurement point has a one-to-one correspondence through the previous steps, measurement points existing within a certain radius range with respect to each management point are connected to the management point. The radius is a distance corresponding to a given connection range numerical value.

The mounting accuracy prediction unit 16 stores the block file of the reference block in which the measurement point is combined with the reference block in the block file storage unit 14 (S70).
Thereafter, the mounting accuracy prediction unit 16 determines whether a mounting block is selected on the mounting accuracy prediction program screen (S72).
As a result of the determination in S72, when a mounting block is further selected (Yes in S72), the mounting accuracy prediction unit 16 connects the measurement point to the selected mounting block by performing steps S62 to S70, and the measurement point is combined. The block file of the mounted block is stored in the block file storage unit 14.

  In the present invention, in order to predict the accuracy with which the mounting block is mounted on the reference block, the measurement points of all the mounting blocks are combined by performing steps S62 to S70 on at least one mounting block and the reference block, Measurement points must be connected to the reference block. When there is one mounting block connected to the reference block, it is sufficient that there is one block file for the reference block and one block file for the mounting block, but there are a plurality of mounting blocks connected to the reference block. In the case of a single block, there must be as many block files of mounted blocks as there are mounted blocks.

If the block file for the reference block and the block file for the mounted block all exist, an instruction to connect the mounted block to the reference block can be executed.
When the block connection is instructed on the screen of the mounting accuracy prediction program with the reference block and at least one mounting block selected (Yes in S74), the mounting accuracy prediction unit 16 is selected. The block file of the reference block and the mounted block is read from the block file storage unit 14, and the three-dimensional graphic for the reference block and the three-dimensional graphic for the mounted block are output to the graphic work window 30 of the mounting accuracy prediction program screen. Referring to FIG. 7, the reference block 100 and the mounting block 200 are shown in the graphic work window 30 of the mounting prediction program screen.

Next, the mounting accuracy prediction unit 16 sets the measurement point connection relationship between the reference block and the mounting block, and then determines the measurement coordinates of the measurement points of the reference block and the measurement coordinates of the measurement points of the mounting block. Calculate the mounting accuracy of the mounting block.
Setting the measurement point matching between the reference block and the mounting block means setting which measurement point of the reference block 100 and which measurement point of the mounting block 200 are matched. In the present invention, the matching operation between the measurement point of the reference block 100 and the measurement point of the mounting block 200 can be performed by various methods. The positions of the respective measurement points can be linked based on the reference, the names of the respective measurement points can be matched based on the reference, and the measurement points to be matched manually can be designated one by one. The method of matching with the position of the point as a reference is a method of automatically matching the measurement point of the mounted block 200 that is closest to the measurement point of the reference block 100.

  FIG. 7 is a diagram showing a method of connecting the reference block and the mounting block based on the position of the point. After selecting and setting the reference block and mounted block to be connected with a mouse or the like, a matching range is set and input. Here, the measurement points and the like outside the matching range may not be matched with each other. That is, matching is performed only between measurement points within the numerical range of the connection range. In this way, the measurement points of the reference block 100 and the measurement points of the mounting block 200 can be matched with each other. At this time, it is necessary to select whether or not the block to be mounted is an insert block. That is, the bow / stern relationship or the internal / external relationship of the block must be set. The inside / outside relationship means whether the block is inside or outside in the width direction (y-axis) with reference to the center line of the block in the figure. This is because it is first determined whether the mounting block 200 is coupled to the reference block 100 in the front or rear, or the left or right.

  In the method of matching between measurement points based on a point name, matching is automatically performed when the names of adjacent measurement points in the reference block 100 and the mounting block 200 are the same. This can be performed when the mounting block 200 is measured in the same order as the measurement point order of the reference block 100.

FIG. 8 is a diagram illustrating a method of manually connecting blocks according to the present invention.
This is used when the user manually attempts to match the measurement point 210 etc. of the mounting block 200 with the measurement point 110 etc. of the reference block 100. As shown in the figure, a measurement point or the like to be matched with each other can be selected by clicking on the graphic work window 300 with a mouse, or a block name and a measurement point name can be input in a dialog box for direct matching.

Further, in the present invention, when the measurement point of the reference block and the measurement point of the mounted block are not matched, the measurement point of the reference block and the measured point of the mounted block can be matched by performing linear interpolation or curve interpolation. . The linear interpolation generates a straight line using two measurement points of the mounting block, generates an XY plane, a YZ plane, and a ZX plane that pass through one measurement point of a reference block adjacent to the mounting block. This is a method of generating a virtual measurement point on the mounted block by performing an intersection calculation. The curve interpolation generates a curve using three or more measurement points of the mounting block, generates an XY plane, a YZ plane, and a ZX plane that pass through one measurement point of a reference block adjacent to the mounting block. A virtual measurement point is generated on the mounted block by performing an intersection calculation with the curve .

In step S76, if the measurement point of the reference block matches the measurement point of the measurement block and the mounting analysis is completed, the operator can adjust the result of the mounting analysis by moving or rotating the mounting block.
Specifically, when the operator inputs a block movement / rotation command on the mounting accuracy prediction program screen (Yes in S78), the mounting accuracy prediction unit 16 corresponds to the result of the mounting analysis as shown in FIGS. Displays the deviation as a vector value. As shown in FIG. 9, the deviation vectors can have different identification codes according to the degree of deviation. In the present invention, the identification code can be classified by hue, and the hue can be used together with the legend 34 so that the operator can recognize the magnitude of the deviation at a glance. That is, if the deviation vector is displayed using arrows of different hues according to the magnitude of the deviation, the degree of deviation can be recognized at a glance. In the figure, if the deviation vector is ← → shape, the deviation gap 801 is represented, and if the deviation vector is → ← shape, the deviation overlap 802 is represented. Such a deviation vector is a value calculated through comparison of measurement points between blocks in step S76, and is obtained by a method of displaying with an arrow corresponding to the deviation.

  As shown in FIG. 10, the deviation vector can be specified so that the directions of the deviation vectors are different from each other for each measurement point. In the figure, deviations between three measurement points appear differently in the x-axis direction 803, the y-axis direction 804, and the z-axis direction 805, respectively. As a method for designating the direction of the deviation vector, for example, a measurement point can be selected one by one using a mouse, or a number of measurement points can be simultaneously selected by dragging. Thereafter, the direction of the deviation vector may be selected by a pop-up window or the like.

  Incidentally, as shown in FIG. 11, in a graphic diagram in which the mounted block is represented by being combined with the reference block, the deviation vector may be hidden by the block and may not be seen well. In order to solve such a problem, a deviation correction value is used in the present invention. That is, as shown in FIG. 12, after the mounting block 200 is separated from the reference block 100 by a certain distance, if the distance is specified as the deviation correction value, even if the mounting block 200 is separated from the reference block 100, When calculating the deviation value, it can be calculated such that the blocks are combined with reference to the correction value. Deviation correction values can be set in three directions of x, y, and z axes, respectively.

  The operator can move / rotate the mounting block 200 with reference to the deviation vector, and can adjust the deviation between the reference block 100 and the mounting block 200 by moving / rotating the mounting block 200. become.

  On the other hand, the worker can rework the mounting block 200 by using the deviation calculated in step S76. Therefore, it can be said that the above-described movement / rotation of the mounting block is not an essential procedure of the present invention. However, due to the structure of the hull block, there are portions that are difficult to rework and portions that are relatively easy to rework. Therefore, it is preferable that the measurement point of the mounting block is moved and rotated again to make a precise adjustment so that the difficult-to-work part has no deviation or the deviation becomes small. As the deviation of parts that are relatively difficult to machine decreases, even if the deviation of parts that are relatively easy to machine increases, the parts with large deviations are parts that are easy to work with. Work efficiency is improved.

In the present invention, the method for moving the block includes one-point movement and two-point movement. The method for rotating the block includes one-point rotation (displacement), two-point rotation (displacement), one-point rotation. Angle) and 2-point rotation (angle).
The one-point movement is to move the mounting block in the entire area axis (x, y, z axis) direction as shown in FIG. That is, after selecting a block to be moved by moving the mouse or the like, the movement direction axis is selected, and the block is simply dragged with the mouse in the graphic work window 30 or the movement displacement is directly input.
As shown in FIG. 14, the two-point movement is used when the two measurement points 901 and 902 are moved in different directions in different directions. This is an effective method when rotating both ends of the block by twisting them in different directions. Similarly, two measurement points of a block to be moved are selected in the graphic work window 30, or a block name and a measurement point name are selected or input in a dialog box.

  The block rotation method includes a displacement reference rotation and an angle reference rotation. The displacement reference rotation is a method of rotating the block using the x-, y-, and z-axis direction displacements of measurement points to be rotated. A general rotation method uses a rotation axis and a rotation angle. However, in the case of block mounting analysis, it is more effective to use the movement displacement in the x-, y-, and z-axis directions of the point to be rotated than to use the rotation angle. The displacement reference rotation method is roughly classified into two types according to the method of setting the rotation axis.

  15 and 16 are diagrams exemplarily illustrating the block rotation method according to the present invention. As shown in FIG. 15, the one-point-axis rotation (displacement) is a method of moving one measurement point selected by the user and the entire axis (x, y, z axis) passing through the measurement point to the rotation axis. It is. First, the measurement point 1001 that becomes the rotation origin is selected in the graphic work window 30, or the target block name and the measurement point number that becomes the rotation origin are selected in the dialog box. If the rotation origin is selected, the rotation axis is drawn in the graphic work window 30. Next, a measurement point 1002 that is a rotation point to be rotated is selected, or a measurement point number that is a rotation point is selected in a dialog box. Select the global axis to be used as the rotation axis in the dialog box.

  Two-point rotation (displacement) is a method of using two measurement points when setting the rotation axis, as shown in FIG. That is, this is a method in which a straight line passing through two measurement points 1004 and 1005 selected by the user is used as the rotation axis. Using the mouse, select two measurement points 1004 and 1005 that will become the rotation axis, or select the target block name and the measurement point number that will become the rotation axis point in the dialog box. Next, a measurement point 1003 to be a rotation point that is a point to be rotated is selected using a mouse or a dialog box. Finally, the rotational direction and rotational displacement may be input and executed. Along with this, the entire displacement of the measurement point rotates with respect to the rotation axis as a given displacement.

Angle reference rotation is a method of rotating a block or a measurement point using a rotation axis and a rotation angle. Here, as already described, there is a method of one point-axis rotation (angle) and two points-axis rotation (angle), except for the point that an angle is used instead of displacement. Since it is the same as the method of one point-axis rotation (displacement) and two points-axis rotation (displacement), detailed description is omitted.
When the mounting analysis is completed through the above-described process and the deviation adjustment with respect to the mounting accuracy is completed, the operator can instruct the creation of a completion check sheet.

When the operator commands creation of a completion check sheet on the screen of the mounting accuracy prediction program (Yes in S82), the mounting accuracy prediction unit 16 includes deviation analysis data between the measurement points of the reference block and the measurement points of the mounting block. A completion check sheet as a final report is output (S84).
In this way, it is possible to output a report in a specified format for the mounting block for which mounting analysis has been completed. FIG. 17 is a view showing an example of a completion check sheet according to the present invention. On the completion check sheet, gaps between blocks and overlap information are displayed numerically.

  For the portion displayed in the overlap on the completion check sheet, the portion corresponding to the measurement point displayed in the overlap is cut with a mounting block, and the processed mounting block is lifted with a crane and joined to the reference block. . The gap between the blocks is welded in a state where the mounting block and the reference block are joined, and the portion corresponding to the measurement point displayed in the gap is filled, thereby completing the assembly of the hull.

  In the embodiment of the present invention, a case where one mounting block is combined with one reference block has been described. However, a plurality of mounting blocks that are combined and mounted on various surfaces of one reference block are analyzed at the same time, and thus the same. It is also possible to perform the work. Therefore, in the present invention, the crane is used after actually measuring the numerical value with a graduated scale in the state where the mounting block is lifted with a crane as before and the mounting block is temporarily connected to the already assembled reference block. Then, after the mounting block is lowered to the ground, the mounting process of cutting the mounting block and lifting the mounting block with a crane again may not be repeated. Therefore, the present invention can minimize the use of the crane and reduce the amount of correction work, and can improve the dock rotation rate and shorten the ship construction period.

Claims (27)

In order to mount a mounting block on a reference block of a hull, a mounting accuracy prediction system for a hull block that measures the dimensional accuracy between the reference block and the mounting block, compares and analyzes the dimensional accuracy, and processes the mounting block. And
A user interface for inputting an instruction for predicting the mounting accuracy of the reference block and the mounting block from an operator, and displaying a performance result for the command in a three-dimensional graphic;
A design file storage for storing a design file for the reference block and the mounted block;
In conjunction with the user interface, a check sheet displaying at least one management point for the reference block and at least one management point for the mounting block is provided, and at least one measurement point for the reference block and the mounting block A mounting accuracy prediction unit that compares at least one measurement point with respect to each other and provides a completion check sheet based on the deviation,
A block file in which a block file in which the at least one measurement point is coupled to the reference block and a block file in which the at least one measurement point is coupled to the mounting block are stored under the control of the mounting accuracy prediction unit. A storage unit,
The management point is selected by the operator and displayed in the design file, and represents a position to be considered for predicting the mounting accuracy when the mounting block is mounted on the reference block,
The at least one measurement point for the mounting block is matched with the at least one management point for the reference block when mounting the mounting block on the reference block;
The measurement point is matched one-to-one with the management point, and represents the same position as the management point with respect to the reference block and the mounting block,
The completion check sheet displays whether the deviation between the at least one measurement point of the reference block and the at least one measurement point of the mounting block is a gap or an overlap,
The mounting accuracy prediction system for a hull block, wherein the mounting block is processed based on the completion check sheet before being mounted on the reference block. The mounting accuracy prediction unit
The at least one management point selected in the design file of the reference block selected by the user interface is displayed, and the block file is generated by combining the at least one management point with the design file to generate a block file. The hull block mounting accuracy prediction system according to claim 1, wherein the system is stored in the block file storage unit. The mounting accuracy prediction unit
After at least one measurement point is matched with at least one management point combined with the block file of the reference block, the measurement point is combined with the block file and stored in the block file storage unit. The hull block mounting accuracy prediction system according to claim 1. The mounting accuracy prediction unit
If the measurement point of the reference block and the measurement point of the mounting block are not matched,
A straight line is generated using two measurement points of the mounting block, and an XY plane, a YZ plane, and a ZX plane passing through one measurement point of a reference block adjacent to the mounting block are generated, and the intersection with the straight line is calculated. To generate a virtual measurement point on the mounting block, or to match the measurement point of the reference block and the virtual measurement point of the mounting block,
A curve is generated using three or more measurement points of the mounting block, an XY plane, a YZ plane, and a ZX plane passing through one measurement point of the reference block adjacent to the mounting block are generated, and the curve The virtual measurement point on the mounting block is generated by performing the intersection calculation with the reference block, and then the measurement point of the reference block and the virtual measurement point of the mounting block are matched. Mounting accuracy prediction system for ship hull blocks. The mounting accuracy prediction unit
Displaying at least one management point selected on the mounting block selected by the user interface, and storing the block file in which the at least one management point is coupled to the mounting block in the block file storage unit; The hull block mounting accuracy prediction system according to claim 1. The mounting accuracy prediction unit
After at least one measurement point is matched with at least one management point combined with the block file of the mounted block, the measurement point is combined with the block file and stored in the block file storage unit. The hull block mounting accuracy prediction system according to claim 4. The mounting accuracy prediction unit
Compare at least one measurement point combined with the block file of the reference block with at least one measurement point combined with the block file of the mounted block, and display a deviation corresponding to the comparison result on the user interface The hull block mounting accuracy prediction system according to claim 3 or 6, characterized in that: The at least one measurement point has a three-dimensional coordinate value;
The hull block mounting accuracy prediction system according to claim 7, wherein the deviation is displayed as a three-dimensional vector. The mounting accuracy prediction unit
When the mounting block is moved or rotated, the three-dimensional coordinate value of at least one measurement point of the mounting block is moved based on the movement or rotation state of the mounting block, and at least one measurement point of the mounting block is 9. The mounting accuracy prediction system for a hull block according to claim 8, wherein a deviation of at least one measurement point of the reference block is recalculated. The three-dimensional vector of the deviation is
Depending on the degree, they are shown with different symbols,
9. The hull block mounting accuracy prediction system according to claim 8, wherein an overlap or gap state between the two measurement points is displayed so as to be classified. The mounting block is
The hull block mounting accuracy prediction system according to claim 1, wherein at least one or more. In order to mount a mounting block on a reference block of a hull, a dimensional accuracy between the reference block and the mounting block is measured, a comparison analysis of the dimensional accuracy is performed to process the mounting block, and this is a mounting accuracy prediction method for a hull block. And
(A) In order to calculate the mounting accuracy of the mounting block, the measurement coordinates of at least one measurement point of the reference block are matched with the design coordinates of at least one management point of the reference block, and the at least one reference point is matched with the reference block. The process of combining two measuring points;
(B) In order to measure the mounting accuracy with the reference block, the measurement coordinates of at least one measurement point of the mounting block are matched with the design coordinates of at least one management point of the mounting block, and the mounting block The process of combining one measurement point;
(C) connecting the at least one measurement point of the reference block and the at least one measurement point of the mounting block; and at least one measurement point of the reference block and at least one measurement point of the mounting block. The process of comparing,
(D) Based on the comparison result of each of the measurement points, the deviation of each of the measurement points is analyzed, and the deviation value of each of the at least one measurement point of the mounting block with respect to the at least one measurement point of the reference block is calculated. The process of
(E) Displaying whether the deviation between the at least one measurement point of the reference block and the at least one measurement point of the mounting block is a gap or an overlap based on the deviation value Providing a completion check sheet;
(F) before mounting the mounting block on the reference block, processing the mounting block based on the completion check sheet,
The control points may be displayed on selected by create skilled design file, when the mounting block is mounted on the reference block, indicates the position to be taken into account to predict the mounting accuracy,
The at least one measurement point for the mounting block is matched with the at least one management point for the reference block when mounting the mounting block on the reference block;
The hull block mounting accuracy prediction method, wherein the measurement points are matched one-to-one with the management points and represent the same positions as the management points with respect to the reference block and the mounting block. The step (d)
The analysis result of the deviation with respect to the measurement point is displayed as a three-dimensional vector,
The hull block mounting accuracy prediction method according to claim 12, wherein a state where a gap is formed or an overlap is formed at the at least one measurement point of the mounting block is displayed. The mounted block and the reference block are displayed in a three-dimensional graphic.
The hull block mounting accuracy prediction method according to claim 13, wherein the design coordinates of the management points and the measurement coordinates of the measurement points are three-dimensional coordinate values.   After the step (c), when the mounting block is moved or rotated, a three-dimensional coordinate value of at least one measurement point of the mounting block is moved based on the movement or rotation state of the mounting block, and the mounting block is moved. The method according to claim 14, further comprising a step of recalculating a deviation of at least one measurement point of the moved block and at least one measurement point of the reference block. The mounting block is moved by a one-point movement or a two-point movement method, and the rotation of the mounting block is one point-axis rotation based on displacement, two points-axis rotation based on displacement, and an angle as a reference. One point-axis rotation and two-point axis rotation method based on an angle are performed by any one method selected from the following:
The one-point-axis rotation with reference to displacement is to rotate based on the displacement with one measurement point and the x-, y-, and z-axis global axes passing through the measurement point as rotation axes.
The one-point-axis rotation based on an angle is a rotation based on the angle with one measurement point and the x, y, and z-axis global axes passing through the measurement point as rotation axes,
The two-point-axis rotation based on the displacement is based on the displacement with a straight line passing through the two measurement points as a rotation axis,
The hull block mounting accuracy prediction method according to claim 15, wherein the two-point-axis rotation based on an angle rotates based on the angle with a straight line passing through two measurement points as a rotation axis. In the step (b), the connection between at least one measurement point of the reference block and at least one measurement point of the mounting block is any of a point name reference connection method, a point position reference connection method, and a manual connection method. It is done in one way,
The point name standard connection method is a method of automatically connecting when the names of adjacent measurement points of the reference block and the mounting block are the same,
The point position reference connection method is a method of automatically connecting the measurement points of the mounting block that most closely approximate the measurement points of the reference block,
The hull block mounting accuracy prediction method according to claim 12, wherein the manual connection method is a method of manually connecting the measurement point of the mounting block to the measurement point of the reference block.   The method according to claim 12, wherein the completion check sheet displays a deviation value from the reference block for each of the at least one measurement point of the mounting block.   If at least one management point is selected for the reference block having a three-dimensional coordinate value before the step (a), the at least one management point is combined with the reference block and stored. The method for predicting mounting accuracy of a hull block according to claim 12, further comprising a step of generating a check sheet on which the coordinate value of the at least one management point is displayed. In step (c),
If the measurement point of the reference block and the measurement point of the mounting block are not matched,
A straight line is generated using two measurement points of the mounting block, and an XY plane, a YZ plane, and a ZX plane passing through one measurement point of a reference block adjacent to the mounting block are generated, and the intersection with the straight line is calculated. To generate a virtual measurement point on the mounting block, or to match the measurement point of the reference block and the virtual measurement point of the mounting block,
A curve is generated using three or more measurement points of the mounting block, an XY plane, a YZ plane, and a ZX plane passing through one measurement point of the reference block adjacent to the mounting block are generated, and the curve The virtual measurement point on the mounting block is generated by performing an intersection calculation with the reference block, and then the measurement point of the reference block is matched with the virtual measurement point of the mounting block. Method for predicting mounting accuracy of hull blocks. Stores a mounting accuracy prediction program for a hull block that measures the dimensional accuracy between the reference block and the mounting block, and compares and analyzes the dimensional accuracy to process the mounting block in order to mount the mounting block on the reference block of the hull. A recorded recording medium,
(A) In order to calculate the mounting accuracy of the mounting block, the measurement coordinate of at least one measurement point of the reference block is matched with the design coordinate of at least one management point of the reference block, and the at least one The process of combining two measuring points;
(B) In order to measure the mounting accuracy with the reference block, the measurement coordinates of at least one measurement point of the mounting block are matched with the design coordinates of at least one management point of the mounting block, and the mounting block The process of combining one measurement point;
(C) connecting the at least one measurement point of the reference block and the mounting block, and comparing at least one measurement point of the reference block with the at least one measurement point of the mounting block;
(D) Based on the comparison result of each of the measurement points, the deviation of each of the measurement points is analyzed, and the deviation value of each of the at least one measurement point of the mounting block with respect to the at least one measurement point of the reference block is calculated. The process of
(E) Displaying whether the deviation between the at least one measurement point of the reference block and the at least one measurement point of the mounting block is a gap or an overlap based on the deviation value Providing a completion check sheet;
(F) before mounting the mounting block on the reference block, processing the mounting block based on the completion check sheet,
The control points may be displayed on selected by create skilled design file, when the mounting block is mounted on the reference block, indicates the position to be taken into account to predict the mounting accuracy,
The at least one measurement point for the mounting block is matched with the at least one management point for the reference block when mounting the mounting block on the reference block;
A program for predicting mounting accuracy of a hull block is stored, wherein the measurement points are matched one-to-one with the management points and represent the same positions as the management points with respect to the reference block and the mounting block. A computer-readable recording medium.   Before the step (a), when the at least one management point is selected for the reference block having a three-dimensional coordinate value, the at least one management point is combined with the reference block and stored. The program for predicting the mounting accuracy of a hull block according to claim 21, further comprising a step of generating a check sheet in which the coordinate value of the at least one management point is indicated. Recording medium that can. The mounting block and the reference block are shown in a three-dimensional graphic.
The program for predicting the mounting accuracy of a hull block according to claim 21, wherein the design coordinates of the management points and the measurement coordinates of the measurement points are three-dimensional coordinate values, and can be read by a computer. recoding media. The analysis result of the deviation of the measurement point is represented by a three-dimensional vector,
24. The program for predicting mounting accuracy of a hull block according to claim 23, wherein a state in which a gap is formed or an overlap is formed at the at least one measurement point of the mounting block is displayed. A storage medium that can be stored and read by a computer.   After the step (c), when the mounting block is moved or rotated, a three-dimensional coordinate value of at least one measurement point of the mounting block is moved based on the movement or rotation state of the mounting block, and the mounting block is moved. The program for predicting mounting accuracy of a hull block according to claim 21, further comprising a step of recalculating a deviation of at least one measurement point moved by the block and at least one measurement point of the reference block. Media that can be stored and read by a computer. Provide one-point movement or two-point movement in the mounting block movement method,
In the mounting block rotation method, one point-axis rotation based on displacement, two points-axis rotation based on displacement, one point-axis rotation based on angle, and two points-axis based on angle Providing a rotation method,
The one-point-axis rotation with reference to displacement is to rotate based on the displacement with one measurement point and the x-, y-, and z-axis global axes passing through the measurement point as rotation axes.
The one-point-axis rotation based on an angle is a rotation based on the angle with one measurement point and the x, y, and z-axis global axes passing through the measurement point as rotation axes,
The two-point-axis rotation based on the displacement is based on the displacement with a straight line passing through the two measurement points as a rotation axis,
26. The hull block mounting accuracy according to claim 25, wherein the two-point-axis rotation based on an angle is based on the angle with a straight line passing through two measurement points as a rotation axis. A recording medium in which a program is stored and can be read by a computer. In step (c),
If the measurement point of the reference block and the measurement point of the mounting block are not matched,
A straight line is generated using two measurement points of the mounting block, and an XY plane, a YZ plane, and a ZX plane passing through one measurement point of a reference block adjacent to the mounting block are generated, and the intersection with the straight line is calculated. To generate a virtual measurement point on the mounting block, or to match the measurement point of the reference block and the virtual measurement point of the mounting block,
A curve is generated using three or more measurement points of the mounting block, an XY plane, a YZ plane, and a ZX plane passing through one measurement point of the reference block adjacent to the mounting block are generated, and the curve The virtual measurement point on the mounting block is generated by performing intersection calculation with the reference block, and then the measurement point of the reference block and the virtual measurement point of the mounting block are matched. A recording medium in which a program for predicting the mounting accuracy of the hull block is stored and can be read by a computer.

Images