JP2019207499A - Processing route generation apparatus - Google Patents

Abstract

To provide a processing route generation apparatus that generates a processing route for shortening a processing time in manufacturing a target processed article by performing cutting processing on a raw material.SOLUTION: A processing route generation apparatus 1 includes: a processing route candidate generation part 5 which generates a plurality of processing route candidates in manufacturing a target processed article by performing cutting processing on a raw material based upon raw material data representing the size and shape of the raw material and processed article data representing the size and shape of the target processed article; and a processing route candidate selection part 7 which selects a candidate, having a maximum processing volume velocity as a value obtained by dividing the volume of a part of the raw material to be cut through the cutting processing by a processing time needed for the cutting processing, out of the plurality of processing route candidates generated by the processing route candidate generation part 5, and then determines the selected candidate as a processing route in manufacturing the target processed article through the cutting processing.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a machining path generation device that generates a machining path when a target workpiece is manufactured by cutting a material.

  Conventionally, a wire electric discharge machine, a laser processing machine, or the like can be cut off by cutting a material through a straight groove formed in the material and removing unnecessary portions. In this cutting processing, the processing volume speed, which is the removal volume per unit time, can be increased compared to other removal processing such as cutting, so the processing volume speed is fast to a point close to the shape of the target workpiece. There is an expectation that the total machining time can be shortened by machining by cutting and machining the remaining part by other removal machining. As a technique for obtaining a machining path for cut-off machining, Patent Document 1 discloses a technique for obtaining a machining path while an operator designates a machining target surface.

Japanese Patent No. 4142936

  However, in the technique disclosed in Patent Document 1, it is difficult for an operator to know whether the obtained machining path is efficient, and it is difficult to generate a machining path with reduced machining time. . In addition, when another removal process is performed following the cutting process, it is difficult to determine a range of the cutting process that can shorten the total processing time and generate a processing path. There is a demand for a technique for generating a machining path that shortens a machining time when a target workpiece is manufactured by performing a cutting process or a cutting process and a removal process on a material.

  The present invention has been made in view of the above, and a machining path generation device that generates a machining path that shortens a machining time when a target workpiece is manufactured by performing a cutting process on a material. The purpose is to obtain.

  In order to solve the above-described problems and achieve the object, the present invention is based on the material data indicating the size and shape of the material and the workpiece data indicating the size and shape of the target workpiece. A machining path candidate generation unit that generates a plurality of machining path candidates when manufacturing the target workpiece by cutting off the material. According to the present invention, the one of the plurality of processing path candidates generated by the processing path candidate generation unit is cut when a part of the material is cut by performing the cutting process. The candidate with the highest machining volume velocity, which is a value obtained by dividing the volume of the part by the machining time required for the cutting process, is selected, and the target workpiece is obtained by performing the cutting process on the selected candidate. It further has a machining path candidate selection unit that is determined as a machining path for manufacturing.

  According to the present invention, there is an effect that it is possible to generate a machining path that shortens a machining time when a target workpiece is manufactured by performing a cutting process on a material.

The figure which shows the structure of the processing path | route production | generation apparatus concerning embodiment. The figure which shows the shape of the raw material concerning embodiment The figure which shows the shape of the target processed goods concerning embodiment The figure which shows an example of the data memorize | stored in the related data memory | storage part which the processing path generation apparatus concerning Embodiment has The figure for demonstrating the processing width in the data memorize | stored in the relational data storage part which the processing path generation apparatus concerning Embodiment has The figure which shows the structure of the process path candidate selection part which the process path generation apparatus concerning embodiment has. The figure for demonstrating the function of the time calculation means which the processing path generation apparatus concerning embodiment has The figure for demonstrating the procedure at the time of the process path candidate production | generation part which the process path generation apparatus concerning embodiment has a process path candidate generated The figure which shows the 1st process path candidate of the 3 process path candidates which the process path candidate production | generation part which the process path generation apparatus concerning Embodiment has has produces | generates. The figure which shows the 2nd process path candidate of the 3 process path candidates which the process path candidate production | generation part which the process path generation apparatus concerning Embodiment has has produces | generates. The figure which shows the 3rd process path candidate of the 3 process path candidates which the process path candidate production | generation part which the process path generation apparatus concerning Embodiment has has produces | generates. In the embodiment, the first cutting process is performed after the material is cut along the first machining path determined by the machining path candidate selection unit included in the machining path generation device according to the embodiment. Diagram showing material during processing The figure which shows the 4th process path candidate which the process path candidate production | generation part which the process path generation apparatus concerning Embodiment has has is produced | generated. The figure which shows the 5th process path candidate which the process path candidate production | generation part which the process path generation apparatus concerning Embodiment has has is produced | generated. After the cutting process is performed on the first intermediate material in the embodiment along the second machining path determined by the machining path candidate selection unit included in the machining path generation device according to the embodiment. The figure which shows the 2nd process middle material obtained The figure which shows five kinds of total machining time when the cutting-off process is each performed from 1 to 5 times in embodiment.

  Hereinafter, a machining path generation device according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
First, the configuration of the machining path generation device 1 according to the embodiment will be described. FIG. 1 is a diagram illustrating a configuration of a machining path generation device 1 according to the embodiment. The processing path generation apparatus 1 is an apparatus that generates a processing path when a target processed product is manufactured by cutting off a material. FIG. 2 is a diagram illustrating the shape of the material M according to the embodiment. In the embodiment, the shape of the material M is a rectangular parallelepiped. FIG. 3 is a diagram illustrating the shape of the target processed product G according to the embodiment. In the embodiment, the target processed product G is composed of a rectangular parallelepiped and a quadrangular prism having a trapezoidal cross section located thereon.

  Specifically, the machining path generation device 1 performs a removal process after cutting the material M any number of times from 1 to n times to manufacture a target processed product G. It is an apparatus that generates an execution machining path that is a machining path. For example, the cutting process is wire electric discharge machining. For example, the removal process is a cutting process. The above “n” is an integer of 2 or more.

  Returning to FIG. The processing path generation device 1 stores a material data storage unit 2 for storing material data indicating the size and shape of the material M, and processed product data indicating the size and shape of the target processed product G. And a processed product data storage unit 3. The processing path generation apparatus 1 further includes an input unit 4 that receives material data and processed product data, stores the material data in the material data storage unit 2, and stores the processed product data in the processed product data storage unit 3.

  For example, the input unit 4 receives material data and processed product data from the user. For the convenience of the following description, the input unit 4 has already received material data and processed product data, has already stored the material data in the material data storage unit 2, and has already stored the processed product data in the processed product data storage unit 3. Is assumed. That is, it is assumed that the material data storage unit 2 has already stored the material data, and the processed product data storage unit 3 has already stored the processed product data.

  The processing path generation device 1 generates a plurality of processing path candidates when manufacturing a target processed product G by performing a cutting process on the material M based on the material data and the processed product data. A route candidate generation unit 5 is further included. The machining path candidate generation unit 5 uses the material data stored in the material data storage unit 2 and the processed product data stored in the processed product data storage unit 3 when generating a plurality of processing path candidates. The function of the machining path candidate generation unit 5 will be described later.

  The machining path generation device 1 further includes a candidate storage unit 6 for storing data indicating each of a plurality of machining path candidates generated by the machining path candidate generation unit 5. When the machining path candidate generation unit 5 generates a plurality of machining path candidates, the machining path candidate generation unit 5 stores data indicating each of the generated plurality of machining path candidates in the candidate storage unit 6. The candidate storage unit 6 stores data indicating each of a plurality of machining path candidates.

  The machining path generation device 1 further includes a machining path candidate selection unit 7 that selects a candidate having the highest machining volume speed from among a plurality of machining path candidates generated by the machining path candidate generation unit 5. Here, the processing volume speed is a value obtained by dividing the volume of the material portion to be cut off by the processing time in each processing path candidate, and is a removal volume per unit time. Furthermore, the processing volume speed is a value obtained by dividing the volume of a part of the material M that is cut off when the part of the material M is cut off by the cutting time and dividing it by the processing time required for the cutting. is there. Details of the processing volume velocity will be further described later with reference to FIGS. 6, 7, Formula (1), and Formula (2). When the machining path candidate selection unit 7 selects a candidate with the highest machining volume velocity, the material data stored in the material data storage unit 2 and a plurality of machining path candidates stored in the candidate storage unit 6 are selected. Data indicating each is used.

  The processing path generator 1 is a cutting width obtained by continuously forming a processing width, which is the length of a linear groove formed in the material M when the cutting process is performed, and a linear groove. It further has a relational data storage unit 8 for storing data indicating the relation with the machining area speed, which is the area per unit time of the surface. FIG. 4 is a diagram illustrating an example of data stored in the relational data storage unit 8 included in the machining path generation device 1 according to the embodiment. The relation between the machining width and the machining area speed when the cutting process is performed is specified by the data stored in the relation data storage unit 8. FIG. 4 shows an example of wire electric discharge machining. The machining area speed increases until the machining width reaches Ws, and decreases after Ws. In the case of wire electric discharge machining, it is possible to increase the machining area speed by increasing the power supplied to the machining as the machining width increases to some extent. However, electrical discharge machining has the property that parts involved in electrode machining are consumed simultaneously with machining, and in wire electrical discharge machining, consumption increases as the time involved in machining a part of the wire electrode increases as the machining width increases. It progresses and the problem of the process precision fall by the tension | tensile_strength suppression of a wire electrode for avoiding the cutting | disconnection of a wire electrode and a cutting | disconnection arises. In order to avoid this problem, a measure is taken to reduce the power supplied to the machining after the machining width is at a certain level, thereby reducing the machining area speed.

  FIG. 5 is a diagram for explaining the machining width in the data stored in the relation data storage unit 8 included in the machining path generation device 1 according to the embodiment. The processing path information includes path information that defines the passage positions of the action elements for forming a linear groove in the material, and information that defines the direction of the action elements at each passage position. Here, the action element refers to a wire in wire electric discharge machining, a laser beam in laser machining, or the like. FIG. 5 shows a workpiece X in the case where the material M is a rectangular parallelepiped and is cut and processed with P as the path of the passing position of the action element E and D as the direction of the action element. The broken line in FIG. 5 is a line for indicating that the material M is a rectangular parallelepiped. When the cut-off processing is wire electric discharge machining, the wire X which is an action element moves along the path P, so that an intermediate workpiece X is formed.

  In FIG. 5, the hatched surface is a cut surface that is formed when the material M is cut and processed and a workpiece X is formed. Q ". The processing width W is a length applied to the processing surface Q of the action element. The machining width W depends on the position and direction of the action element and the shape of the machining surface Q, and is often not constant.

  Returning to FIG. The machining path candidate selection unit 7 further uses data indicating the relationship between the machining width and the machining area speed stored in the relation data storage unit 8 when selecting a candidate having the highest machining volume velocity. The processing path candidate selection unit 7 determines the selected candidate as a processing path for manufacturing the target processed product G by performing the cutting process. The function of the processing path candidate selection unit 7 will be further described later with reference to FIGS. 6 and 7, Expression (1), and Expression (2).

  The machining path generation device 1 further includes a machining path storage unit 9 for storing data indicating the machining path determined by the machining path candidate selection unit 7. When the machining path candidate selection unit 7 determines the machining path, the machining path candidate selection unit 7 stores data indicating the determined machining path in the machining path storage unit 9. The machining path storage unit 9 stores data indicating the machining path determined by the machining path candidate selection unit 7. Although details will be described later, the machining path storage unit 9 stores data indicating each of the n machining paths. The machining path generation device 1 further includes a first machining time storage unit 10. Details of the first machining time storage unit 10 will be further described later with reference to FIG.

  The processing path generation device 1 generates processing material data indicating the size and shape of a material in the middle of processing obtained from the material M by processing according to the determined processing path every time a cutting processing path is determined. A material data generation unit 11 is further included. The processing material data generation unit 11 uses data stored in the material data storage unit 2 and data indicating a processing path stored in the processing path storage unit 9 when generating the processing material data. The processed material data generation unit 11 stores the generated processed material data in the material data storage unit 2. The material data storage unit 2 also stores processed material data.

  The machining path generation device 1 converts a cutting process material into a processing material based on the size of the processing material indicated by the processing material data generated by the processing material data generation unit 11 every time a cutting processing path is determined. The apparatus further includes a second processing time calculation unit 12 that calculates a second processing time that is a processing time required for the removal processing when the target processed product G is manufactured by performing the removal processing. The second machining time calculation unit 12 uses the machining material data stored in the material data storage unit 2 and the workpiece data stored in the workpiece data storage unit 3 when calculating the second machining time. . In the embodiment, the second processing time is calculated as being proportional to the volume obtained by subtracting the volume of the target processed product G from the volume of the material being processed.

  The machining path generation device 1 further includes a second machining time storage unit 13 for storing data indicating the second machining time calculated by the second machining time calculation unit 12. After calculating the second machining time, the second machining time calculation unit 12 stores data indicating the second machining time in the second machining time storage unit 13. The second machining time storage unit 13 stores data indicating the second machining time.

  The machining path generation device 1 uses the second machining time calculated by the second machining time calculation unit 12 to perform a cutting process and a removing process to manufacture a target workpiece G from the material M. It further has a total machining time calculation unit 14 for calculating the total machining time. Although details will be described later, the total machining time calculation unit 14 calculates n total machining times. When the total machining time calculation unit 14 calculates each of the n total machining times, the total machining time calculation unit 14 stores the data stored in the first machining time storage unit 10 and the second machining time storage unit 13. Data indicating processing time is used.

  The machining path generation device 1 further includes a total machining time storage unit 15 for storing data indicating the total machining time. When the total machining time is calculated, the total machining time calculation unit 14 stores data indicating the total machining time in the total machining time storage unit 15. The total machining time storage unit 15 stores data indicating the total machining time. The machining path generation device 1 further includes a display unit 16 that displays information indicating the n total machining times calculated by the total machining time calculation unit 14. When the total machining time is calculated, the total machining time calculation unit 14 outputs information indicating the total machining time to the display unit 16. The display unit 16 displays information indicating n total machining times.

  The machining path generation device 1 identifies a path having the shortest total machining time from among the n total machining times calculated by the total machining time calculation unit 14, and the identified path is processed from the material M to the target machining. An execution machining path determination unit 17 that determines an execution machining path that is a machining path when manufacturing the product G is further included. The execution machining path is a machining path in which the total machining time when manufacturing the target workpiece G from the material M is the shortest among the n machining paths indicated by the data stored in the machining path storage unit 9. is there. When the execution machining path determination unit 17 determines the execution machining path, data indicating the machining path stored in the machining path storage unit 9 and data indicating the total machining time stored in the total machining time storage unit 15. And are used.

  The machining path generation device 1 further includes an execution machining path storage unit 18 for storing data indicating an execution machining path. When the execution machining path is determined, the execution machining path determination unit 17 stores data indicating the execution machining path in the execution machining path storage unit 18. The executed machining path storage unit 18 stores data indicating the executed machining path. The execution machining path is a machining path when the target workpiece G is actually manufactured.

  FIG. 6 is a diagram illustrating a configuration of the machining path candidate selection unit 7 included in the machining path generation device 1 according to the embodiment. The machining path candidate selection unit 7 includes a volume calculation unit 71 that calculates the volume of a portion to be cut by the cutting process for each of the plurality of machining path candidates generated by the machining path candidate generation unit 5. For example, the part cut by the cutting process is an object constituted by the processed surface Q and the surface indicated by the broken line in FIG. When calculating the volume, the volume calculating unit 71 stores material data or processed material data stored in the material data storage unit 2 and data indicating each of a plurality of processing path candidates stored in the candidate storage unit 6. Is used. FIG. 6 also shows the material data storage unit 2 and the candidate storage unit 6.

  The machining path candidate selection unit 7 includes, for each of the plurality of machining path candidates, a machining width when the cutting process is performed, and an area per unit time of a cut surface formed when the cutting process is performed. The time for calculating the processing time based on the relationship between the processing area speed and the shape and size of the processing surface, which is the surface formed when the material or material being processed is cut off A calculation means 72 is further provided.

  When calculating the machining time, the time calculation means 72 is data indicating each of a plurality of machining path candidates stored in the candidate data or the material data or the processed material data stored in the material data storage unit 2. And data indicating the relationship between the machining width and the machining area speed when the cutting process is performed, which is stored in the relation data storage unit 8. FIG. 6 also shows the relationship data storage unit 8.

  FIG. 7 is a diagram for explaining the function of the time calculation unit 72 included in the machining path generation device 1 according to the embodiment. FIG. 7 shows a workpiece X in the case where the material M is a rectangular parallelepiped and the cutting process is performed along the path P. A broken line in FIG. 7 indicates that the material M is a rectangular parallelepiped. When the cutting process is wire electric discharge machining, the workpiece X is formed by moving the wire along the path P.

When the cutting process is wire electric discharge machining, the wire moves from the position P _i to the position P _{i + 1} in a certain minute time. It is assumed that the machining width W when the wire is located at the position P _i is W _i and the machining area speed v is v _i . v _i is specified by the data shown in FIG. On the processing surface Q, it is assumed that the area of the region through which the wire passes when the wire moves from the position P _i to the position P _{i + 1} is A _i . In FIG. 7, the area A _i is an area of a region surrounded by a relatively thick line. In this case, the time calculation means 72 calculates the machining time T based on the following formula (1). That is, the time calculation means 72 calculates the machining time T by adding up all “A _i / v _i ” of the machining surface Q. “A _i / v _i ” is obtained by dividing the area A _i by the machining area speed v _i .

  Returning to FIG. The machining path candidate selection unit 7 divides the volume calculated by the volume calculation unit 71 by the machining time calculated by the time calculation unit 72 for each of the plurality of machining path candidates generated by the processing path candidate generation unit 5. It further has speed calculation means 73 for calculating the processing volume speed. For example, the part cut by the cutting process is an object constituted by the processed surface Q and the surface indicated by the broken line in FIG. Volume calculation means 71 calculates the volume of the object. It is assumed that the volume of the object is C and the time calculation means 72 calculates the machining time T using the above equation (1). The speed calculation means 73 calculates the processing volume speed V based on the following formula (2).

  The machining path candidate selection unit 7 selects and selects the candidate having the highest machining volume velocity calculated by the speed calculation unit 73 from among the plurality of machining path candidates generated by the machining path candidate generation unit 5. It further has a route determination means 74 for deciding a candidate as a processing route in cutting. The route determination unit 74 stores data indicating the machining time for the selected candidate in the first machining time storage unit 10. The route determination unit 74 uses the data indicating the machining time calculated by the time calculation unit 72 when storing the data indicating the machining time of the selected candidate in the first machining time storage unit 10. The machining time at the candidate selected by the route determination means 74 is defined as the first machining time.

  The processing path candidate generation unit 5 shown in FIG. 1 uses, based on the material data and the processed product data, or the processed material data and the processed product data for each of the first to n-th cutting operations. Originally, a plurality of machining path candidates for producing the target workpiece G is generated by performing the cutting process. Specifically, the machining path candidate generation unit 5 performs the cutting process on the basis of the material data and the processed product data for the first cutting process when the target processed product G is manufactured. A plurality of machining path candidates are generated. The machining path candidate generation unit 5 is the data generated by the machining material data generation unit 11 for each cutting process from the second time to the nth time, and is in the process of being obtained by performing the previous cutting process. Based on the processed material data and the processed product data about the material, a plurality of processing path candidates for producing the target processed product G is generated by performing the cutting process.

  The machining path candidate selection unit 7 shown in FIG. 1 has the highest machining volume speed among the plurality of machining path candidates generated by the machining path candidate generation unit 5 for each of the first to n-th cutting processes. Select a candidate. The machining path candidate selection unit 7 determines the selected candidate as a machining path and calculates a first machining time that is a time required for the cutting process for each cutting process from the first to the n-th time. Data indicating the first machining time is stored in the first machining time storage unit 10.

  Specifically, the path determination unit 74 shown in FIG. 6 performs a machining volume from among a plurality of machining path candidates generated by the machining path candidate generation unit 5 for each of the first to n-th cutting processes. Select the candidate with the highest speed. The route determination unit 74 determines the selected candidate as a processing route, and stores data indicating the first processing time calculated by the time calculation unit 72 and indicating the first processing time in the first processing time storage unit 10. Store.

  The total machining time calculation unit 14 adds the second machining time to the total of the first machining times calculated by the machining path candidate selection unit 7 every time the machining path for each cutting process from the first to the n-th machining is determined. The total machining time is calculated by adding the second machining time calculated by the machining time calculator 12. Thereby, the total machining time calculation unit 14 calculates n total machining times corresponding to each of the cutting operations from the first to the n-th time. As the number of cutting operations increases, the second processing time becomes shorter.

  Next, the operation of the machining path generation device 1 according to the embodiment will be described with a specific example. In a specific example, “n” is “5”. The processing path candidate generation unit 5 generates a plurality of processing path candidates when manufacturing the target processed product G by cutting and cutting the material M. In a specific example, the machining path candidate generation unit 5 generates three machining path candidates.

The processing path candidate generation procedure is as follows.
1) The machining path candidate generation unit 5 generates a reference direction as a reference for generating a machining path candidate from the shape data of the target workpiece G. The reference direction is a direction perpendicular to a specific surface of the shape represented by the shape data, a direction along a specific edge, an arbitrarily generated direction, for example, a specific direction is rotated around a specific axis at regular angular intervals. Direction can be generated from.
2) The machining path candidate generation unit 5 performs the following operation for each generated reference direction.
2-1) The machining path candidate generation unit 5 generates a contour line of the shape of the target workpiece G viewed from the reference direction.
2-2) The machining path candidate generation unit 5 extracts a portion where a straight line passing through the outline and parallel to the reference direction intersects the inside of the material shape from the outline.
2-3) The machining path candidate generation unit 5 generates one machining path candidate from the extracted part of the contour line and the reference direction.

FIG. 8 shows an example of contour generation in the procedure 2-1). That is, FIG. 8 is a diagram for explaining a procedure when the machining path candidate generation unit 5 included in the machining path generation device 1 according to the embodiment generates machining path candidates. FIG. 8 shows a contour line when O ₀ is viewed from the reference direction when the direction N ₀ perpendicular to the surface F ₀ of the shape data of the target workpiece G is selected as the reference direction. Further, FIG. 9 shows machining path candidates generated by the procedure 2-2) and the procedure 2-3). L is a straight line passing through the contour line and parallel to the reference direction N ₀ , and a contour line portion where L intersects the inside of the material shape is P. Machining path candidates are generated by the part P and the reference direction N ₀ of the contour. 10 and 11 respectively show that machining path candidates are generated by selecting T ₀ and T ₁ which are directions along the edges E ₀ and E ₁ of the shape of the target workpiece as reference directions. Is shown. That is, FIG. 9 is a diagram illustrating a first machining path candidate among the three machining path candidates generated by the machining path candidate generation unit 5 included in the machining path generation device 1 according to the embodiment. FIG. 10 is a diagram illustrating a second machining path candidate among the three machining path candidates generated by the machining path candidate generation unit 5 included in the machining path generation device 1 according to the embodiment. FIG. 11 is a diagram illustrating a third machining path candidate among the three machining path candidates generated by the machining path candidate generation unit 5 included in the machining path generation device 1 according to the embodiment.

  The machining path candidate selection unit 7 selects a candidate having the highest machining volume speed from among the three machining path candidates generated by the machining path candidate generation unit 5. Among the above three machining path candidates, the machining volume speed in the first machining path candidate shown in FIG. 9 is higher than the machining volume speed in the second machining path candidate shown in FIG. Assume that the machining volume velocity in the third machining path candidate shown is faster. In this case, the machining path candidate selection unit 7 selects the first machining path candidate shown in FIG. 9 from the three machining path candidates, and determines the first machining path candidate as the first machining path. To do.

  The machining path candidate selection unit 7 calculates a first machining time that is a machining time in the first machining path, and stores data indicating the first machining time in the first machining time storage unit 10. Specifically, the route determination means 74 selects a first machining route candidate, determines the first machining route candidate as the first machining route, and is the first machining time in the first machining route. Data indicating the machining time is stored in the first machining time storage unit 10.

  The processed material data generation unit 11 determines the size and shape of the intermediate material to be obtained after the material M is cut off along the first processing path determined by the processing path candidate selection unit 7. The processing material data shown is generated. In FIG. 12, the cutting process is performed on the material M in the embodiment along the first machining path determined by the machining path candidate selection unit 7 included in the machining path generation device 1 according to the embodiment. It is a figure which shows the 1st process middle material H1 obtained after a heat treatment. That is, the processed material data generation unit 11 generates processed material data indicating the size and shape of the first in-process material H1 shown in FIG.

  The second machining time calculation unit 12 performs a removal process on the first intermediate material H1 shown in FIG. 12 to produce a target processed product G, which is a second machining time that is a machining time for the removal process. Is calculated. Specifically, the second processing time calculation unit 12 performed removal processing on an object having a volume obtained by subtracting the volume of the target workpiece G from the volume of the first processing intermediate material H1. The 2nd processing time which is processing time in case is calculated.

  The total machining time calculation unit 14 performs the cutting process with the first machining path candidate shown in FIG. 9 and then performs the removal process, thereby producing the total processed time G from the material M. Is calculated. Specifically, the total machining time calculation unit 14 sets the second machining time of the removal machining after the cut machining in the first machining path is performed to the first machining time in the first machining path. By adding, the total machining time is calculated. The total machining time is defined as “first total machining time” because it is the total machining time when the cut-off machining is performed once. Hereinafter, the total machining time when the cutting process is performed n times is defined as “nth total machining time”.

  The machining path candidate generation unit 5 performs the cutting process on the first halfway material H1 obtained after the cutting process is performed on the first machining path candidate shown in FIG. A plurality of processing path candidates for producing the product G is generated. In a specific example, the machining path candidate generation unit 5 generates two machining path candidates.

  FIG. 13 is a diagram illustrating a fourth machining path candidate generated by the machining path candidate generation unit 5 included in the machining path generation device 1 according to the embodiment. FIG. 14 is a diagram illustrating a fifth machining path candidate generated by the machining path candidate generation unit 5 included in the machining path generation device 1 according to the embodiment. Both the fourth processing path candidate and the fifth processing path candidate are two processing path candidates when the target processed product G is manufactured by cutting and processing the first in-process material H1. One of the

  In each of FIGS. 13 and 14, the target processed product G shown in FIG. 3 and the first intermediate material H1 shown in FIG. 12 are shown. The path P is indicated by a relatively thick line arrow. The arrow indicates the traveling direction of the path P. A relatively thick broken line indicates the wire L at each of a plurality of positions along the path P.

  The machining path candidate selection unit 7 selects a candidate having the highest machining volume speed from the two machining path candidates generated by the machining path candidate generation unit 5. It is assumed that the machining volume speed in the fourth machining path candidate is faster than the machining volume speed in the fifth machining path candidate. In this case, the machining path candidate selection unit 7 selects the fourth machining path candidate shown in FIG. 13 from the fourth machining path candidate and the fifth machining path candidate, and the fourth machining path candidate. Is determined as the second machining path.

  The machining path candidate selection unit 7 calculates the first machining time in the second machining path, and stores data indicating the first machining time in the first machining time storage unit 10. Specifically, the route determination means 74 selects the fourth machining route candidate, determines the fourth machining route candidate as the second machining route, and indicates the first machining time in the second machining route. Data is stored in the first machining time storage unit 10.

  The processing material data generation unit 11 cuts the first processing material H1 and cuts the processing material obtained after the cutting processing is performed along the second processing path determined by the processing path candidate selection unit 7. Process material data indicating the size and shape is generated. FIG. 15 illustrates a second machining path in which the cutting process is determined by the machining path candidate selection unit 7 included in the machining path generation device 1 according to the embodiment for the first in-process material H1 in the embodiment. It is a figure which shows the 2nd process raw material H2 obtained after performing along. That is, the processed material data generation unit 11 generates processed material data indicating the size and shape of the second intermediate material H2 shown in FIG.

  The second machining time calculation unit 12 performs a removal process on the second intermediate material H2 shown in FIG. 15 to produce a desired processed product G, which is a second machining time that is a machining time for the removal process. Is calculated. Specifically, the second processing time calculation unit 12 performs the removal processing on an object having a volume obtained by subtracting the volume of the target workpiece G from the volume of the second processing intermediate material H2. A second machining time that is a machining time is calculated.

  The total machining time calculation unit 14 performs the cutting process with the first machining path candidate shown in FIG. 9, then performs the cutting process with the fourth machining path candidate shown in FIG. 13, and then performs the removal process. To calculate the total processing time for manufacturing the target processed product G from the material M. Specifically, the total machining time calculation unit 14 performs the first machining time on the first machining path, the first machining time on the second machining path, and the cut-off machining on the second machining path. The total machining time is calculated by adding the second machining time of the removal machining after being performed. The total machining time is defined as “second total machining time” because it is the total machining time when the cut-off machining is performed twice.

  In a specific example, “n” is “5”. Therefore, the total machining time calculation unit 14 calculates the total machining time when manufacturing the target workpiece G from the material M by performing the cutting process three times and then performing the removal process. The total machining time is defined as “third total machining time” because it is the total machining time when the cut-off machining is performed three times. In order to calculate the third total machining time, the machining path candidate generation unit 5 performs a cutting process on the second halfway material H2 shown in FIG. A plurality of processing path candidates for manufacturing are generated.

  The total machining time calculation unit 14 calculates a fourth total machining time when the target workpiece G is manufactured from the material M by performing the cutting process four times and then performing the removal process. The fourth cutting process is performed on a material in the middle of processing obtained by the third cutting process. In addition, the total processing time calculation unit 14 calculates a fifth total processing time when the target processed product G is manufactured from the material M by performing the cutting processing five times and then performing the removal processing. The fifth cutting process is performed on a material in the middle of processing obtained by the fourth cutting process.

  In a specific example, “n” is “5”. Therefore, the machining path candidate selection unit 7 determines five machining paths including the first machining path, the second machining path, the third machining path, the fourth machining path, and the fifth machining path. The machining path storage unit 9 stores data indicating each of the five machining paths. The first machining time storage unit 10 stores data indicating the first machining time corresponding to each of the five machining paths. That is, the first machining time storage unit 10 stores data indicating each of the five first machining times. The total machining time calculation unit 14 calculates five total machining times.

  FIG. 16 is a diagram illustrating five total machining times when the cutting process is performed each time from 1 to 5 times in the embodiment. The display unit 16 displays information indicating the five total machining times shown in FIG. In FIG. 16, a block having a diagonal line indicates a second processing time that is a processing time of the removal processing. In FIG. 16, a block including any one of (1) to (5) indicates a first processing time that is a processing time of the cutting-off processing indicated by the number. For example, the block including (1) indicates the first processing time of the first cutting processing. For example, the block including (3) indicates the first machining time of the third cutting process. FIG. 16 also shows the total processing time when only the removal processing is performed on the material M.

  As shown in FIG. 16, in the embodiment, the total machining time when the cutting process is performed three times is the shortest among the five total machining times when the cutting process is performed. Therefore, the execution machining path determination unit 17 determines a path when the cutting process is performed three times from the five total machining times calculated by the total machining time calculation unit 14 from the material M to the target workpiece G. Is determined as an execution machining path, which is a machining path when manufacturing.

  As described above, the machining path candidate selection unit 7 selects a candidate having the highest machining volume speed from among a plurality of machining path candidates generated by the machining path candidate generation unit 5. Therefore, the machining path generation device 1 can generate a machining path that shortens the machining time when the target workpiece G is manufactured by performing the cutting process on the material M.

  More specifically, the execution machining path determination unit 17 specifies a path having the shortest total machining time from the n total machining times calculated by the total machining time calculation unit 14, and uses the identified path as a material. It is determined as an execution machining path which is a machining path when manufacturing the target workpiece G from M. Therefore, the machining path generation device 1 can generate a machining path that shortens the total machining time when the target workpiece G is manufactured by performing the removal process after the material M is cut off. .

  In the embodiment described above, a specific example of “n” is “5”. However, “n” is not limited to “5”. “N” may be an integer of 2 or more.

  In the above-described embodiment, since the specific example of “n” is “5”, the total machining time calculation unit 14 calculates five total machining times. However, when the total machining time calculated by the total machining time calculation unit 14 decreases until the cutting process is performed a specific number of times and increases when the cutting process exceeds a specific number of times, the execution machining path determination unit 17 May cut off the operation for calculating the total machining time and decide to stop after the machining has exceeded a specific number of times. The machining path generation device 1 stops the operation for calculating the total machining time according to the determination by the execution machining path determination unit 17.

  In that case, the execution machining path determination unit 17 determines a path where the cutting process is performed a specific number of times as the execution machining path. Also with this technique, the machining path generation device 1 generates a machining path that shortens the total machining time when the target workpiece G is manufactured by performing the removal process after the material M is cut off. be able to.

  The cutting process may be a water jet process. The removal processing may be laser processing.

  The material data storage unit 2, the processed product data storage unit 3, the candidate storage unit 6, the relational data storage unit 8, the processing path storage unit 9, and the first processing time storage unit 10 included in the processing path generation device 1 according to the embodiment, An example of each of the second machining time storage unit 13, the total machining time storage unit 15, and the execution machining path storage unit 18 is a semiconductor memory.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

  DESCRIPTION OF SYMBOLS 1 Processing path | route production | generation apparatus, 2 Material data storage part, 3 Work product data storage part, 4 Input part, 5 Processing path candidate production | generation part, 6 Candidate storage part, 7 Processing path candidate selection part, 8 Relational data storage part, 9 Processing Path storage unit, 10 first machining time storage unit, 11 machining material data generation unit, 12 second machining time calculation unit, 13 second machining time storage unit, 14 total machining time calculation unit, 15 total machining time storage unit, 16 Display unit, 17 execution machining path determination unit, 18 execution machining path storage unit, 71 volume calculation unit, 72 time calculation unit, 73 speed calculation unit, 74 path determination unit.

Claims (5)

Based on the material data indicating the size and shape of the material and the processed data indicating the size and shape of the target processed product, the target processed product is manufactured by cutting the material. A machining path candidate generation unit for generating a plurality of machining path candidates when performing,
Among the plurality of machining path candidates generated by the machining path candidate generation unit, the part volume to be cut off when a part of the material is cut by performing the cutting process. When selecting a candidate having the highest machining volume speed, which is a value divided by the machining time required for the cutting process, and manufacturing the target processed product by performing the cutting process on the selected candidate. A machining path generation device comprising: a machining path candidate selection unit that determines a machining path. n is defined as an integer greater than or equal to 2,
The processing path generation device is a processing path when manufacturing the target processed product by performing removal processing after performing the cutting process on the material any number of times from 1 to n times. An apparatus for determining an execution machining path,
A machining material data generation unit that generates machining material data indicating the size and shape of a material in the middle of machining obtained from the material each time the machining path for the cutting process is determined,
The machining path candidate generation unit performs a plurality of processes when manufacturing the target processed product by performing the cutting process based on the material data and the processed product data for the first cutting process. Is obtained by performing the previous cutting process on data generated by the processing material data generation unit for each of the cutting processes from the second time to the nth time. Based on the processed material data and the processed product data about the material being processed, generate a plurality of processing path candidates when manufacturing the target processed product by performing the cutting processing,
The machining path candidate selection unit has the highest machining volume speed among the plurality of machining path candidates generated by the machining path candidate generation unit for each of the cutting processes from the first to the n-th time. The machining path generation device according to claim 1, wherein a candidate is selected and the selected candidate is determined as the machining path. Each time the machining path for the cutting process is determined, the machining material data generated by the machining material data generation unit is based on the size of the machining material that is indicated by the machining material data. A second machining time calculation unit that calculates a second machining time that is a machining time required for the removal machining when performing the removal machining to produce the target workpiece;
Using the second machining time calculated by the second machining time calculation unit, a total machining time when the target workpiece is manufactured from the material by performing the cutting process and the removing process is calculated. A total machining time calculation unit to calculate,
A route that provides the shortest total machining time among the n total machining times calculated by the total machining time calculation unit is specified, and the specified route is used when manufacturing the target processed product from the material. An execution machining path determination unit for determining the execution machining path;
The machining path candidate selection unit calculates a first machining time that is a time required for the cutting process for each of the cutting processes from the first to the n-th time.
The total machining time calculation unit calculates the total of the first machining times calculated by the machining path candidate selection unit each time the machining path of each cutting process from the first time to the n-th time is determined. By adding the second machining time calculated by the second machining time calculation unit to calculate the total machining time, the n patterns corresponding to the cutting operations from the first to the n-th time are calculated. The machining path generation device according to claim 2, wherein a total machining time is calculated. The machining path generation apparatus according to claim 3, further comprising a display unit that displays information indicating the n total machining times calculated by the total machining time calculation unit. The machining path candidate selection unit
For each of the plurality of machining path candidates generated by the machining path candidate generation unit, volume calculation means for calculating a volume of a portion to be cut by the cutting process;
For each of the plurality of machining path candidates, the relationship between the machining width when the cutting process is performed and the machining area speed that is the area per unit time of the cut surface formed when the cutting process is performed And time calculating means for calculating a processing time based on the shape and size of the processing surface that is a surface formed when the cutting processing is performed,
For each of the plurality of machining path candidates, speed calculation means for calculating the machining volume speed by dividing the volume calculated by the volume calculation means by the machining time calculated by the time calculation means;
Path selection means for selecting a candidate having the highest machining volume speed calculated by the speed calculation means from among the plurality of machining path candidates, and determining the selected candidate as the machining path. The machining path generation device according to any one of claims 1 to 4, wherein the machining path generation device is characterized.