Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
  • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B19/00—Program-control systems
  • G05B19/02—Program-control systems electric
  • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
  • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by monitoring or safety
  • G05B19/4061—Avoiding collision or forbidden zones
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B19/00—Program-control systems
  • G05B19/02—Program-control systems electric
  • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
  • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by monitoring or safety
  • G05B19/4069—Simulating machining process on screen
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B19/00—Program-control systems
  • G05B19/02—Program-control systems electric
  • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
  • G05B19/409—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by using manual data input [MDI] or by using control panel, e.g. controlling functions with the panel; characterised by control panel details or by setting parameters
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B19/00—Program-control systems
  • G05B19/02—Program-control systems electric
  • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
  • G05B19/4093—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part program, for the NC machine
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B19/00—Program-control systems
  • G05B19/02—Program-control systems electric
  • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
  • G05B19/4155—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by program execution, i.e. part program or machine function execution, e.g. selection of a program

Definitions

• This disclosure relates to a geometric model creation support device, a geometric model creation support method, a geometric model creation support program, and a machining system that support the work of creating a geometric model of a structure within a machine tool.
• Machine tools that machine workpieces according to a machining program.
• Machine tools have, for example, a table or turning spindle to which the workpiece is fixed by a fixture, a tool spindle to which a tool is attached, a drive mechanism that moves the table or turning spindle and the tool spindle relative to one another, and a numerical control device that numerically controls the drive mechanism based on the machining program. If there is an error in the machining program, there is a risk of structures arranged within the machine tool colliding with each other.
• Patent Document 1 discloses a method that includes image acquisition means that photographs structures such as a chuck, workpiece, tool post, and tool, recognizes the shape or position of each structure from images acquired by the image acquisition means, and predicts collisions between structures based on the recognition results.
• the shapes of structures such as workpieces and fixtures may change each time they are machined, and their relative positions may change when they are reattached to other structures. This makes creating the shape model time-consuming for workers, and there is a risk that the shape model may not be created accurately.
• the present disclosure has been made in consideration of the above, and aims to provide a support device for geometric model creation work that can assist in the geometric model creation work so that geometric models of structures can be accurately created.
• the geometric model creation support device disclosed herein is a geometric model creation support device that supports the creation of geometric models of multiple structures including workpieces placed in a machine tool, and is characterized by comprising: a sensor data receiving unit that receives input of sensor data obtained by sensing at least some of the multiple structures from an external source; a display unit that displays a sensing model of the structure based on the sensor data received by the sensor data receiving unit and a geometric model of the structure so that they can be compared; and a sensor data information receiving unit that receives input of sensor data information obtained from the sensing model from an external source in order to align the position, orientation, and dimensions of the structure in the geometric model displayed on the display unit with the structure in the sensing model displayed on the display unit.
• the geometric model creation support device disclosed herein has the effect of supporting geometric model creation work so that geometric models of structures can be accurately created.
• FIG. 1 is an explanatory diagram illustrating a processing system according to a first embodiment
• FIG. 1 is a perspective view schematically illustrating an example of a machine tool constituting a machining system according to a first embodiment
• FIG. 1 is a block diagram showing a support device for creating a shape model according to a first embodiment
• FIG. 1 is an explanatory diagram schematically illustrating an example of a display unit included in a support device for creating a shape model according to a first embodiment
• FIG. 1 is an explanatory diagram schematically illustrating an example of a display unit included in a support device for creating a shape model according to a first embodiment
• 1 is a flowchart showing a method for supporting a shape model creation operation according to a first embodiment.
• FIG. 1 is an explanatory diagram schematically illustrating an example of a display unit included in a support device for creating a shape model according to a first embodiment
• FIG. 1 is an explanatory diagram schematically illustrating an example of a display unit included in a support device for creating a shape model according to a first embodiment
• FIG. 1 is an explanatory diagram schematically illustrating an example of a display unit included in a support device for creating a shape model according to a first embodiment
• FIG. 1 is an explanatory diagram schematically illustrating an example of a display unit included in a support device for creating a shape model according to a first embodiment
• FIG. 1 is an explanatory diagram schematically illustrating an example of a display unit included in a support device for creating a shape model according to a first embodiment
• FIG. 1 is an explanatory diagram schematically illustrating an example of a display unit included in a support device for creating a shape model according to a first embodiment
• FIG. 1 is an explanatory diagram schematically illustrating an example of a display unit included in a support device for creating a shape model according to a first embodiment
• FIG. 10 is a block diagram showing a support device for creating a shape model according to a second embodiment.
• FIG. 10 is an explanatory diagram schematically illustrating an example of a display unit included in the support device for creating a shape model according to the second embodiment; 10 is a flowchart showing a method for supporting a shape model creation operation according to a second embodiment.
• FIG. 1 is an explanatory diagram showing an example of the configuration of a computer system that realizes an apparatus for supporting a geometric model creation operation according to an embodiment of the present invention
• Fig. 1 is an explanatory diagram showing a machining system according to a first embodiment.
• a machining system 300 according to the first embodiment includes a machine tool 200 and a shape model creation operation support device 100.
• the machine tool 200 controls structures within the machine tool 200 in accordance with a machining program created by, for example, a CAM system, and machines a workpiece.
• the shape model creation operation support device 100 supports the operation of creating shape models of multiple structures including workpieces placed within the machine tool 200.
• the machine tool 200 includes, as an example of a structure, a bed 20, a column 21, a table 22 on which the workpiece W is placed, a tool 23 for cutting the workpiece W, a tool spindle 24 to which the tool 23 is attached, a drive mechanism for moving the table 22 and the tool spindle 24 relative to each other, and a numerical control device (not shown) for numerically controlling the drive mechanism based on a machining program for the workpiece W.
• the workpiece W is fixed to the table 22 by a mounting fixture (not shown).
• the drive mechanism moves tool 23 attached to tool spindle 24 relative to workpiece W fixed to table 22. Rotation of tool spindle 24 causes rotation of tool 23, which then comes into contact with workpiece W, cutting away a portion of the workpiece W.
• machine tool 200 processes workpiece W while determining whether or not a collision has occurred between structures based on geometric models of the structures. If a collision between geometric models of the structures is confirmed prior to cutting processing of workpiece W, machine tool 200 stops the movement of the drive mechanism.
• the machine tool 200 is not limited to the configuration shown in the figure and may have other forms.
• the machine tool 200 may be configured to have a turning spindle or the like that can hold and rotate the workpiece W.
• the turning spindle or the like becomes a structure within the machine tool 200.
• FIG. 3 is a block diagram showing a shape model creation work support device according to the first embodiment.
• the shape model creation work support device 100 includes a sensor data receiving unit 1, a shape model receiving unit 2, a display unit 3, and a sensor data information receiving unit 4.
• the sensor data receiving unit 1 is an interface that receives input of sensor data for at least some of the multiple structures that have been sensed.
• the structures include the table 22, tool spindle 24, drive mechanism, workpiece W, fixtures, and tool 23. These structures are sensed using at least one sensing means: a camera, LiDAR (Light Detection and Ranging), or a 3D scanner.
• the sensor data varies depending on the sensing means and may be, for example, image data or 3D point cloud information.
• the structures sensed by the sensing means are primarily the workpiece W and fixtures that secure the workpiece W. This is because the shapes of the workpiece W and fixtures often change each time cutting is performed, and their relative positions are often changed by reattaching them to other structures. In this case, a new shape model must be created to be registered in the machine tool 200.
• the shapes and relative positions of the table 22, tool spindle 24, drive mechanism, etc. rarely change.
• the sensing means may be one that is sensed by an operator from outside the machine tool 200, or one that is installed inside or outside the machine tool 200 and performs sensing automatically. For example, if a camera is used as the sensing means, an image is taken that captures the entire workpiece W fixed to the table 22 with a mounting fixture.
• the camera may also use the camera function of a smartphone or tablet, for example.
• Some cameras are equipped with a keystone correction function, for example. In this case, even if it is not possible to take an image from directly above, it is possible to obtain a photograph that looks like it was taken from directly above.
• the geometric model reception unit 2 is an interface that receives input data related to the geometric model of each structure.
• Data related to the geometric model refers to data that represents a three-dimensional shape, such as in the STL (Standard Triangulated Language) file format.
• STL Standard Triangulated Language
• the display unit 3 is an interface that displays a sensing model 30 based on sensor data of the structure received by the sensor data receiving unit 1, and a shape model 31 of the structure that has been created in advance, in a manner that allows them to be compared.
• the display unit 3 shown in FIG. 4 is configured, as an example, to display the sensing model 30 and the shape model 31 side by side.
• the sensing model 30 shown in FIG. 4 is, as an example, image data of a workpiece W fixed on the table 22 captured by a camera from directly above.
• the sensing means is a camera
• a photograph can be taken toward the Z axis in the X-axis, Y-axis, and Z-axis coordinate system of the machine tool 200, and a photograph that appears to have been taken from directly above can be obtained by performing trapezoidal correction, tilt correction, etc.
• the sensing model 30 shown in Figure 4 shows the table 22, the workpiece W, a mounting fixture 22a for mounting the workpiece W on the table 22, a fixture 22b for fixing the mounting fixture 22a on the table 22, and a backing plate 22c for gripping the workpiece W.
• the shape model 31 shown in Figure 4 shows the table 22 and the workpiece W as an example.
• the shape model 31 displayed on the display unit 3 is simplified to the extent that it does not affect the collision detection of structures.
• Simplification means, for example, displaying a structure in a simple shape such as a rectangular parallelepiped, cylinder, or sphere.
• the shape model 31 of the table 22 shown in Figure 4 has been simplified and is shown as a simple cylinder, unlike the actual structure.
• By displaying the simplified shape model 31 in this way even structures with complex shapes can be made into a combination of simple shapes, thereby reducing the number of faces of the shape model. Therefore, when determining whether a collision between structures has occurred based on the shape model of the structures, the calculation load required for collision detection can be reduced, and, for example, processing stoppages can be suppressed.
• the display unit 3 may also have a function to display either the sensing model 30 or the shape model 31 in a flashing or semi-transparent manner.
• the display unit 3 may also have a function to switch either the sensing model 30 or the shape model 31 from displayed to hidden.
• the display unit 3 may be configured to display each structure in the shape model 31 in a flashing or semi-transparent manner, or to switch each structure from displayed to hidden. This allows the operator to easily check the differences between the sensing model 30 and the shape model 31.
• the display unit 3 is not limited to a configuration that displays the sensing model 30 and the shape model 31 side by side, as shown in FIG. 4.
• the display unit 3 may be configured to display the sensing model 30 and the shape model 31 superimposed on each other, for example.
• FIG. 5 shows a case where the dimensions of the sensing model 30 and the shape model 31 are different.
• the display unit 3 may display either the sensing model 30 or the shape model 31 in a flashing manner, or display either one semi-transparently.
• the display unit 3 may switch between displaying and hiding either the sensing model 30 or the shape model 31.
• the display unit 3 may be configured to flash or display semi-transparently for each structure in the shape model 31, or to switch between displaying and hiding for each structure.
• the sensor data information receiving unit 4 is an interface that receives input of sensor data information in order to match the position, orientation, and dimensions of the structure in the shape model 31 displayed on the display unit 3 with the structure in the sensing model 30 displayed on the display unit 3.
• the sensor data information is input externally by an operator.
• the sensor data information is information related to the position, orientation, and dimensions of the structure in the sensing model 30.
• the structures in the sensing model 30 displayed on the display unit 3 and the structures in the shape model 31 may not match in all or any of their positions, orientations, and dimensions.
• the operator may not be able to visually determine the differences between the sensing model 30 and the shape model 31. This may make it impossible to create a shape model of the structure that matches the actual shape of the structure and match the positional relationship between the structures. Therefore, the position, orientation, and dimensions of the shape model are corrected based on the sensor data information received by the sensor data information receiving unit 4, and the sensing model 30 displayed on the display unit 3 is made to match the shape model 31.
• Figure 6 is a flowchart showing the method for supporting a shape model creation operation according to the first embodiment.
• the method for supporting a shape model creation operation according to the first embodiment is performed using the shape model creation operation support device 100 configured as described above.
• the geometric model creation support device 100 receives, via the sensor data receiving unit 1, input of sensor data obtained by sensing at least some of the structures within the machine tool 200 (step S101).
• a structure sensed by the operator by the sensing means is a workpiece W, whose shape and positional relationship change each time cutting is performed, and for which there is a high possibility that a new geometric model 31 will be created.
• the geometric model creation support device 100 displays on the display unit 3 a comparison of the sensing model 30 of the structure based on the sensor data input to the sensor data receiving unit 1 and the geometric model 31 of the structure (step S102).
• the geometric model creation support device 100 externally accepts input of sensor data information obtained from the sensing model 30 via the sensor data information accepting unit 4 in order to match the position, orientation, and dimensions of the structure in the geometric model 31 displayed on the display unit 3 with the structure in the sensing model 30 displayed on the display unit 3 (step S103).
• the worker inputs sensor data information into the sensor data information accepting unit 4 while looking at the sensing model 30 displayed on the display unit 3.
• FIG. 7 is an explanatory diagram schematically illustrating an example of a display unit included in the support device for creating a shape model according to the first embodiment.
• the operator specifies an arbitrary point on the workpiece W in the sensing model 30 and inputs the relationship between the pixel position of the arbitrary point obtained from the sensing model 30 and the actual position of the specified arbitrary point into the sensor data information receiving unit 4 as sensor data information.
• the pixel position of the arbitrary point can be obtained, for example, by checking the X and Y coordinates of the sensing model 30.
• the pixel position of the specified point can be confirmed by, for example, moving the cursor to an arbitrary point on the sensing model 30 and clicking on that point.
• the actual position of the specified arbitrary point can be determined as the position of the contact point of the workpiece W as viewed from the origin of the machine tool 200 by the operator manually operating the machine tool 200 and bringing the tip of the tool 23 into contact with the specified arbitrary point on the workpiece W. This corrects the position of the workpiece W in the shape model 31, and as shown in Figure 4, the position of the workpiece W in the shape model 31 can be made to match the position of the workpiece W in the sensing model 30.
• FIGS. 8 and 9 are explanatory diagrams schematically illustrating an example of a display unit provided in the support device for geometric model creation work according to the first embodiment.
• the sensing means is a camera
• a photograph can be taken, for example, toward the Z axis in the X, Y, and Z axes that form the coordinate system of the machine tool 200, and by performing keystone correction and tilt correction, etc., a photograph that appears to have been taken from directly above can be obtained.
• FIG. 8 for example, there are cases where the sensing model 30 is displayed slightly tilted within the XY axis plane.
• the worker then specifies an arbitrary ridge line or shape in the sensing model 30, for example, and measures the inclination angle of the specified ridge line or shape.
• the worker then inputs the inclination angle of the arbitrary ridge line or shape specified in the XY-axis plane into the sensor data information receiving unit 4 as sensor data information.
• FIG. 10 is an explanatory diagram schematically illustrating an example of a display unit included in the support device for creating a shape model according to the first embodiment.
• the dimensions of the workpiece W and table 22 in the shape model 31 may not match the dimensions of the workpiece W and table 22 in the sensing model 30.
• the operator specifies an arbitrary edge line included in the workpiece W in the sensing model 30 and inputs the relationship between the number of pixels of the edge line obtained from the sensing model 30 and the actual dimensions of the edge line as sensor data information to the sensor data information receiving unit 4. For example, information indicating how many millimeters one pixel in the sensing model 30 corresponds to in the actual dimensions is input.
• the operator may, for example, trace the arbitrary edge line with a cursor to specify the range of the edge line.
• the actual dimensions of the edge line may be measured using a ruler, calipers, or other methods. This modifies the dimensions of the workpiece W and table 22 in the shape model 31, allowing the dimensions of the workpiece W and table 22 in the shape model 31 to match the dimensions of the workpiece W and table 22 in the sensing model 30, as shown in Figure 4.
• the geometric model creation support device 100 receives external input of sensor data information obtained from the sensing model 30 via the sensor data information receiving unit 4, and is able to align the position, orientation, and dimensions of the structure in the geometric model 31 displayed on the display unit 3 with the structure in the sensing model 30 displayed on the display unit 3.
• the method for matching the position, orientation, and dimensions of the structure in the shape model 31 displayed on the display unit 3 to the structure in the sensing model 30 displayed on the display unit 3 is not limited to the method described above. Other methods may be used as long as they can match the position, orientation, and dimensions of the structure in the shape model 31 to the structure in the sensing model 30.
• the shape model creation support device 100 displays the sensing model 30 and the shape model 31, which has been adjusted in position, orientation, and dimensions to the sensing model 30, side by side on the display unit 3, as shown in FIG. 4 or FIG. 9 (step S104).
• the worker can discover that the shape model 31 does not include shape models for the mounting fixture 22a, fixing fixture 22b, and backing plate 22c.
• the geometric model creation support device 100 can prompt the worker to create a geometric model of the mounting fixture 22a and the backing plate 22c by not including them in the geometric model 31 displayed on the display unit 3.
• the geometric model creation support device 100 receives input of geometric model data for the structure via the geometric model receiving unit 2 (step S105).
• the structure is, for example, a mounting fixture 22a and a backing plate 22c that are at risk of colliding with the workpiece W. Note that there is no need to create a geometric model for other structures that can be determined to have no risk of collision with each other.
• FIG. 11 is an explanatory diagram schematically illustrating an example of a display unit included in the shape model creation support device according to the first embodiment.
• the shape model creation support device 100 displays, on the display unit 3, the sensing model 30 and the shape model 31 received and created by the shape model receiving unit 2 (step S106).
• the mounting fixture 22a and the backing plate 22c do not need to be created using different shape models; they may be represented, for example, by a combination of three rectangular parallelepipeds 31a, 31b, and 31c. This is because it is sufficient to be able to determine whether or not a collision between the structures has occurred, and unnecessary surfaces may be omitted.
• the operator may adjust the X- and Y-axis dimensions of the rectangular parallelepipeds 31a, 31b, and 31c to match the dimensions of the sensing model 30 while visually checking the display results on the display unit 3, or may adjust them by inputting actual measured dimensions into the shape model receiving unit 2. Furthermore, in addition to the configuration described above in which the sensing model 30 of the structure sensed along the Z axis is compared with the shape model 31, the operator may also make additional adjustments to the shape model 31 by comparing the sensing model 30 of the structure sensed along the X and Y axes with the shape model 31 of the structure based on sensor data on the display unit 3.
• the support device 100 for creating a shape model has been described as an example in which the sensing model 30 and the shape model 31 are displayed side by side.
• the sensing model 30 and the shape model 31 may be displayed superimposed on each other.
• the display unit 3 may be configured to display either the sensing model 30 or the shape model 31 in a blinking or semi-transparent manner, or to switch either the sensing model 30 or the shape model 31 from displayed to hidden. This allows the operator to easily check the differences between the sensing model 30 and the shape model 31.
• the shape model receiving unit 2 may receive input of shape model data for a structure at a time other than step S105.
• the worker can input shape model data into the shape model receiving unit 2 at any time from steps S101 to S105 to create or modify a shape model.
• the geometric model creation work support device 100 includes a sensor data receiving unit 1 that receives from the outside input of sensor data obtained by sensing at least some of a plurality of structures; a display unit 3 that displays a sensing model 30 of the structure based on the sensor data received by the sensor data receiving unit 1 and a geometric model 31 of the structure in a comparable manner; and a sensor data information receiving unit 4 that receives from the outside input of sensor data information obtained from the sensing model 30 in order to align the position, orientation, and dimensions of the structure in the geometric model displayed on the display unit 3 with the structure in the sensing model 30 displayed on the display unit 3.
• the shape model creation work support device 100 displays on the display unit 3 the sensing model 30 and a shape model 31 that matches the position, orientation, and dimensions of the structure on the sensing model 30, and prompts the worker to create and modify the shape model 31, thereby supporting the creation of the shape model 31 so that the shape model 31 of the structure can be accurately created. Therefore, the shape model creation work support device 100 according to the first embodiment can create a shape model 31 that is true to the shape of the actual structure and can also match the positional relationships between structures, thereby enabling the collision prevention function to function effectively.
• a shape model creation work support device 101 according to the second embodiment will be described.
• Fig. 12 is a block diagram showing the shape model creation work support device according to the second embodiment.
• Fig. 13 is an explanatory diagram schematically showing an example of a display unit included in the shape model creation work support device according to the second embodiment. Note that the same components as those in the shape model creation work support device 100 according to the first embodiment are given the same reference numerals, and their description will be omitted as appropriate.
• the geometric model creation work support device 101 is characterized by the addition of a motion range calculation unit 5 in addition to the configuration of the first embodiment.
• the motion range calculation unit 5 calculates the motion range of the moving structures within the machine tool 200 from the machining program for the workpiece W.
• the motion range of the structures is the range within which interference between structures may occur. Examples of structures for which the motion ranges are calculated include the tool 23, tool spindle 24, table 22, and drive mechanism for moving the tool spindle 24.
• the motion range of the structure can be calculated, for example, by defining an extrusion figure that follows the movement of the structure calculated from the machining program.
• the motion range of the structure can be calculated by converting this into the movement of the drive mechanism for the tool spindle 24 relative to the turning spindle. Then, as shown in FIG. 13 , the display unit 3 displays, for example, the movement range R of the outer shape of the workpiece W on the geometric model 31 based on the motion ranges of the drive mechanism and the like calculated by the motion range calculation unit 5.
• Figure 14 is a flowchart showing the method for supporting shape model creation work according to the second embodiment.
• the method for supporting shape model creation work according to the second embodiment is performed using the shape model creation work support device 101 configured as described above. Note that steps S201 to S203 shown in Figure 14 are the same as steps S101 to S103 shown in Figure 6, and therefore their description will be omitted.
• the sensor data information receiving unit 4 receives input of sensor data information (step S203), and then the operating range calculation unit 5 calculates the operating range of the structure that will perform the operation based on the machining program (step S204).
• the structure here refers to the tool 23, tool spindle 24, table 22, and drive mechanism that moves the tool spindle 24, etc.
• the geometric model creation support device 100 displays, on the display unit 3, a sensing model 30 of the structure and a geometric model 31 that has been adjusted to match the position, posture, and dimensions of the sensing model 30.
• the display unit 3 also displays the movement range R of the external shape of the workpiece W on the geometric model based on the operating range of the drive mechanism calculated by the operating range calculation unit 5 (step S205). This allows the worker to visually confirm the display results on the display unit 3 and encourages them to create and modify the geometric model 31 of the structure. For example, by comparing the sensing model 30 and the geometric model 31 displayed on the display unit 3, the worker can discover that the mounting fixture 22a, fixing fixture 22b, and backing plate 22c are not included in the geometric model 31.
• the shape model creation support device 100 can prompt the worker to create a shape model for the backing plate 22c by not including the backing plate 22c in the shape model 31. Note that there is no need to create shape models for other structures that can be determined to have no possibility of collision with each other.
• the geometric model creation support device 101 receives input of geometric model data for the structure via the geometric model receiving unit 2 (step S206).
• the structure is, for example, a backing plate 22c that poses a risk of collision with the workpiece W.
• the geometric model creation support device 101 displays, on the display unit 3, the sensing model 30 and the geometric model 31 received and created by the geometric model receiving unit 2 (step S207), and then ends the process.
• the support device 101 for creating a shape model has been described as an example in which the sensing model 30 and the shape model 31 are displayed side by side.
• the sensing model 30 and the shape model 31 may be displayed superimposed on each other.
• the display unit 3 may be configured to display either the sensing model 30 or the shape model 31 in a blinking or semi-transparent manner, or to switch either the sensing model 30 or the shape model 31 from displayed to hidden. This allows the operator to easily check the differences between the sensing model 30 and the shape model 31.
• FIG. 15 is an explanatory diagram showing an example configuration of a computer system that realizes a shape model creation work support device according to this embodiment.
• the shape model creation work support devices 100, 101 according to this embodiment function as shape model creation work support devices 100, 101 by executing a computer program on the computer system that describes the processing in the shape model creation work support devices 100, 101.
• this computer system includes a processor 400 and memory 401, which are connected via a system bus 402.
• the processor 400 and memory 401 can send and receive information to and from each other via the system bus 402.
• the processor 400 is, for example, an example of a processing circuit, and includes one or more of a CPU (Central Processing Unit), a DSP (Digital Signal Processor), and a system LSI (Large Scale Integration).
• the memory 401 includes one or more of a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, an EPROM (Erasable Programmable Read Only Memory), and an EEPROM (registered trademark) (Electrically Erasable Programmable Read Only Memory).
• the memory 401 also includes a recording medium on which a computer-readable program is recorded.
• Sensor data reception unit 2. Geometric model reception unit, 3. Display unit, 4. Sensor data information reception unit, 5. Operating range calculation unit, 20. Bed, 21. Column, 22. Table, 22a. Mounting fixture, 22b. Fixture, 22c. Backing plate, 23. Tool, 24. Tool spindle, 25. Y-axis movement mechanism, 26. X-axis movement mechanism, 27. Z-axis movement mechanism, 30. Sensing model, 31. Geometric model, 31a, 31b, 31c. Rectangular parallelepiped, 100, 101. Geometric model creation work support device, 200. Machine tool, 300. Machining system, 400. Processor, 401. Memory, 402. System bus, W. Work.

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