JP2018010333A - Processing tool use time prediction device, cutting processing system and processing tool use time prediction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To predict a use time in a processing tool which is used for processing of a workpiece, before actual cutting processing of the workpiece by a processing device.SOLUTION: A processing tool use time prediction method is configured to predict a use time of a processing tool, on a processing device for cutting processing a workpiece based on a processing program, by a processing tool which is held and rotated by a spindle which relatively moves to the workpiece. The method comprises: a processing simulation step for reading a processing program, performing a control same to a control which the processing device performs based on the processing program, in a pseudo state, and acquiring a time when the spindle of the processing device holds and rotates the processing tool, as a processing tool use time; a processing tool use time integration step for integrating the processing tool use times acquired by the processing simulation step, for every processing tool, for acquiring an integration processing tool use time; and a display step for displaying the integration processing tool use time acquired in the processing tool use time integration step.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a machining tool usage time prediction apparatus, a cutting system, and a machining tool usage time prediction method, and more specifically, machining based on a machining program such as NC data (NC program) by numerical control using a microcomputer or the like. The present invention relates to a processing tool use time prediction apparatus, a cutting system, and a processing tool use time prediction method that are suitable for use in a processing apparatus that cuts a workpiece in three dimensions with a tool.

  Conventionally, the workpiece is tertiaryized by a processing tool such as an end mill with a blade tip at the tip of the shank based on a processing program such as NC data (NC program) having a plurality of processing steps by numerical control using a microcomputer or the like. 2. Description of the Related Art Processing apparatuses that produce a three-dimensional structure having a desired shape by cutting are known.

  In such a processing apparatus, for example, a spindle on which a shank of a processing tool is attached and a table on which a workpiece is placed are arbitrary in the X axis direction, the Y axis direction, and the Z axis direction in the XYZ orthogonal coordinate system. The relative positional relationship between the cutting edge of the processing tool and the workpiece placed on the table is arbitrarily changed in three dimensions by moving in the direction. Then, according to each machining step of the machining program, the workpiece is moved to the desired shape by the cutting edge of the machining tool by moving the spindle and the table while bringing the cutting edge of the machining tool rotated by the spindle into contact with the workpiece. To make a three-dimensional structure.

  Further, in such a processing apparatus, it is common to use a plurality of processing tools having cutting edges having shapes corresponding to respective uses such as roughing and finishing as processing tools. A tool box for housing the is disposed. Then, under the control of the microcomputer, the processing device returns the processing tool for roughing and finishing, which holds the shank base end to the spindle chuck, to the tool box and holds it from the spindle chuck. Selected on the spindle by removing the machining tool and selecting one of the other machining tools contained in the toolbox and holding the proximal end of the shank of the selected machining tool on the chuck of the spindle A function to automatically hold the processing tool is provided.

  Such a function is a well-known technique disclosed in, for example, JP-A-9-314435, JP-A-2002-345844, or JP-A-2015-62974, and is widely used as an auto tool changer function. Generally known. Therefore, conventionally known techniques can be applied to such an auto tool changer function, and thus detailed description of the configuration and operation thereof will be omitted.

  On the other hand, in a processing apparatus, for example, as shown in Japanese Patent Application Laid-Open No. 2002-73126, a processing time required for cutting a workpiece is estimated. Further, Japanese Patent Application Laid-Open No. 2002-73126 discloses that the machining time / remaining time in one machining tool may be calculated.

  However, in the prior art, a specific method for predicting the time that each processing tool is used for processing for each processing tool before cutting the workpiece by a processing apparatus using a plurality of processing tools. Was not proposed. Therefore, there is a problem that it is difficult for the operator to determine the replacement timing of the processing tool before cutting the workpiece by the processing apparatus. For this reason, in the technical field related to processing equipment, there is a strong proposal for a technique for predicting the usage time of a processing tool used for processing the workpiece before the actual cutting of the workpiece by the processing apparatus. It was desired.

JP 9-314435 A JP 2002-345844 A Japanese Patent Laying-Open No. 2015-62974 JP 2002-73126 A

  The present invention has been made in view of the problems and demands with respect to the conventional techniques as described above, and the object of the present invention is to provide the workpiece before actual cutting of the workpiece by the processing apparatus. The present invention is intended to provide a processing tool use time prediction device, a cutting system, and a processing tool use time prediction method for predicting the use time of a processing tool used in the machining.

  In order to achieve the above object, a processing tool usage time predicting apparatus according to the present invention is configured to process the workpiece on the basis of a machining program by a machining tool held and rotated by a spindle that moves relative to the workpiece. In a machining tool usage time prediction device for predicting the usage time of the machining tool in a machining device for cutting, the machining tool usage time prediction unit, and a display unit connected to the machining tool usage time prediction unit, The processing tool usage time predicting unit reads a storage unit that stores a processing program used when cutting a workpiece in the processing device, and reads the processing program stored in the storage unit, and the processing device performs the processing. The same control as that performed based on the program is performed in a pseudo manner, and the spindle of the above processing device rotates while holding the processing tool. A machining simulation unit that obtains the machining tool usage time as an interval, and a machining tool usage time integration unit that accumulates the machining tool usage time acquired by the machining simulation unit for each machining tool to obtain an integrated machining tool usage time, and And a display control unit that controls the display unit to display the integrated machining tool use time acquired by the processing tool use time integration unit.

  Further, the machining tool usage time prediction device according to the present invention is the above-described machining tool usage time prediction device according to the present invention, wherein the machining simulation unit reads the machining program stored in the storage unit, and the machining device A machining program analysis unit that performs the same control as the control based on the machining program and obtains a predicted machining time that is expected to be required when the machining device cuts the workpiece based on the machining program. And a machining tool usage time acquisition unit that acquires, as a machining tool usage time, a time during which the spindle of the machining device holds and rotates the machining tool from the predicted machining time acquired by the machining program analysis unit. It is made to have.

  Further, the machining tool usage time prediction apparatus according to the present invention is the above-described machining tool usage time prediction apparatus according to the present invention, wherein the machining simulation unit processes the machining program for each command and is used in the machining program. The processing tool usage time is obtained for each tool.

  The cutting system according to the present invention includes the above-described processing tool usage time prediction device according to the present invention and a processing device connected to the processing tool usage time prediction device.

  Further, the cutting system according to the present invention is such that, in the above-described cutting system according to the present invention, the processing device performs cutting according to the processing program in which the processing tool use time prediction device has acquired the integrated processing tool use time. It is a thing.

  The machining tool usage time prediction method according to the present invention is a machining apparatus for cutting the workpiece based on a machining program by a machining tool held and rotated by a spindle that moves relative to the workpiece. In the machining tool usage time prediction method for predicting the usage time of the machining tool, the machining program is read and the same control as that performed by the machining device based on the machining program is performed in a pseudo manner, and the spindle of the machining device performs machining. The machining simulation process that acquires the rotation time while holding the tool as the machining tool usage time, and the machining tool usage time acquired by the machining simulation process is integrated for each machining tool to obtain the total machining tool usage time. Machining tool usage time integration process to be acquired and the above processing tool usage time integration It is obtained so as to have a display step of displaying has been accumulated machining tool use time obtained in extent.

  Further, the machining tool usage time prediction method according to the present invention is the above-described machining tool usage time prediction method according to the present invention, wherein the machining simulation step reads out the machining program and the control performed by the machining apparatus based on the machining program. And a machining program analysis step for obtaining a predicted machining time predicted to be required when the machining device cuts the workpiece based on the machining program, and the machining program analysis step. A machining tool usage time acquisition step for acquiring, as a machining tool usage time, a time during which the spindle of the machining device holds and rotates the machining tool from the predicted machining time acquired by It is.

  Further, the machining tool usage time prediction method according to the present invention is the above-described machining tool usage time prediction method according to the present invention, wherein the machining simulation step is a machining used by the machining program by processing the machining program for each command. The processing tool usage time is obtained for each tool.

  Since the present invention is configured as described above, it is possible to predict the usage time of a processing tool used for processing the workpiece before the actual cutting of the workpiece by the processing apparatus. This is an excellent effect.

FIG. 1 is a block configuration explanatory diagram showing an example of an embodiment of a cutting system according to the present invention. FIG. 2 is an explanatory perspective view of a schematic configuration showing a machining apparatus in an example of an embodiment of a cutting system according to the present invention. FIG. 3 is a block configuration explanatory diagram showing a processing tool usage time prediction device in an example of an embodiment of a cutting system according to the present invention. FIG. 4 is a flowchart showing a processing time prediction processing routine executed by the processing tool usage time prediction device.

  Hereinafter, an example of an embodiment of a processing tool use time prediction apparatus, a cutting system, and a processing tool use time prediction method according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a block configuration explanatory diagram showing an example of an embodiment of a cutting system according to the present invention. The cutting system 300 includes a processing device 10 that cuts the workpiece 100 with a processing tool 110, and a processing tool usage time prediction device 200 that is connected to the processing device 10 through a line L that enables wired communication. Configured.

  FIG. 2 is a schematic configuration perspective view showing the machining apparatus 10 in an example of the embodiment of the cutting system according to the present invention. The entire operation of the machining apparatus 10 is controlled by a microcomputer 32, and the workpiece 100 is cut based on a machining program. The processing apparatus 10 includes a fixed base member 12, side members 14 </ b> L and 14 </ b> R that are erected at right and left ends of the base member 12 and perpendicular to the base member 12, and a rear end of the base member 12. In addition to standing upright and a rear member 16 that connects the left and right side members 14L and 14R, a processing space S for cutting the workpiece 100 is formed.

  The processing space S is separable from the outside by a cover member (not shown) that is detachably disposed on the front side, and the workpiece 100 is processed in the processing space S in a state isolated from the outside. can do. The guide rail 18 is disposed so that both ends thereof are supported by the side members 14L and 14R and extended in the X-axis direction in the XYZ orthogonal coordinate system. A support member 20 is slidably mounted on the guide rail 18 and supported so as to be movable in the X-axis direction. A carriage 22 is disposed on the support member 20 so as to be movable in the Z-axis direction. The carriage 22 has a spindle 24 for holding various processing tools 110 having a cutting edge 110b having a shape corresponding to each application such as roughing and finishing at the tip of the shank 110a so as to be rotatable around the Z axis. It is arranged.

  A pair of guide rails 26 extending in the Y-axis direction are disposed on the base member 12 in parallel. The table 28 is slidably disposed on the guide rail 26 and is supported so as to be movable in the Y-axis direction. The upper surface 28a of the table 28 is processed using, for example, zirconia used for producing a denture. An object 100 is placed. Examples of the workpiece 100 include a resin material such as a transparent acrylic plate and other various materials in addition to the above-described zirconia. The workpiece 100 may be fixed to the upper surface 28a of the table 28 using, for example, a double-sided tape.

  Reference numeral 38 denotes a motor serving as a drive source for rotating the machining tool 110 held on the spindle 24 around the Z axis. Note that illustration of a motor serving as a drive source for moving the support member 20 supporting the carriage 22 in the X-axis direction and a motor serving as a drive source for moving the carriage 22 supported by the support member 20 in the Z-axis direction is omitted. Similarly, illustration of a motor that is a drive source for moving the table 28 in the Y-axis direction is omitted.

  Since the spindle 24 is movable in the X-axis direction and the Z-axis direction via the carriage 22, the machining tool 110 held by the spindle 24 and the spindle 24 moves in the Z-axis direction in the carriage 22 and moves the carriage 22. To move in the X-axis direction. In the processing apparatus 10, the positional relationship between the table 28 that moves in the Y-axis direction and the spindle 24 that moves in the X-axis direction and the Z-axis direction can be relatively changed in three dimensions.

  In the processing apparatus 10, the microcomputer 32 controls the driving of each of the motors including the motor 38 according to each processing step of the processing program, whereby the cutting edge 110 b of the processing tool 110 rotated by the spindle 24 is processed. The carriage 22 and the table 28 are moved while being brought into contact with 100, and the workpiece 200 is cut into a desired shape by the cutting edge 110b of the processing tool 110 to produce a three-dimensional structure.

  On the upper surface 28a of the table 28, there is disposed a tool box 30 that accommodates various processing tools 110 each having a cutting edge 110b having a shape corresponding to each application such as roughing and finishing. In the processing apparatus 10 according to the present embodiment, the tool box 30 is disposed in the vicinity of the side member 14L, and is configured so that the processing tool 110 held by the spindle 24 can be disposed on the tool box 30 from above. Yes.

  The processing apparatus 10 has a conventionally known auto tool changer function. The processing tool 110 holding the base end portion of the shank 110a on the chuck 24a of the spindle 24 is returned to the tool box 30, and the chuck of the spindle 24 is recovered. The processing tool 110 held by the tool box 30 is removed and any one of the other processing tools 110 housed in the tool box 30 is selected, and the base end portion of the shank 110a of the selected processing tool is set to the spindle 24. By holding the chucking tool 24a, the processing for holding the selected processing tool 110 on the spindle 24 is automatically performed.

  Various methods have been proposed for selecting a desired processing tool 110 from the tool box 30 as needed. In the present embodiment, the following method is used. That is, a number is assigned in advance to each of the machining tools 110, such as “3” for the roughing machining tool 110 and “8” for the finishing machining tool 110, and the tool tool 30 includes The storage location is determined in advance, and the information is stored in the microcomputer 32. When the microcomputer 32 recognizes that the command of the machining program is, for example, replacement with the machining tool with the number “3” assigned to the machining tool 110 for roughing, the respective motors described above are driven. , The machining tool 110 held on the chuck 24a of the spindle 24 when the "No. 3" number is input is returned to the tool box 30, and the machining held on the chuck 24a of the spindle 24 is performed. While removing the tool 110 and holding the base end portion of the shank 110a of the processing tool 110 assigned the number “3” accommodated in the tool box 30 to the chuck 24a of the spindle 24, the spindle 24 is roughed. The operation of holding the machining tool 110 is performed.

  Next, FIG. 3 shows a block configuration explanatory diagram showing a processing tool usage time prediction device 200 in an example of an embodiment of a cutting system according to the present invention. The processing tool usage time prediction device 200 is constructed by a computer and includes a processing tool usage time prediction unit 202 and a display unit 204.

  The display unit 204 is a display, for example, and displays an accumulated machining tool usage time (described later) acquired by the machining tool usage time prediction unit 202. The display unit 204 may be an operation screen (not shown) provided in the processing apparatus 10 and used when an operator operates the processing apparatus 10. The processing tool usage time prediction unit 202 includes a control unit 206, a storage unit 208, a processing simulation unit 210, a processing tool usage time integration unit 212, and a display control unit 214. In addition, the machining simulation unit 210 includes a machining program interpretation unit 210a and a machining tool usage time acquisition unit 210b. The control unit 206 controls the overall processing executed by the processing tool usage time prediction unit 202. The storage unit 208 stores a machining program used when cutting the workpiece 100 in the machining apparatus 10. Further, the storage unit 208 integrates a predicted machining time (described later) acquired by a machining tool usage time prediction processing routine described later, a machining tool usage time (described later), and a machining tool usage time. (In this specification, it is appropriately referred to as “integrated machining tool use time”).

  The machining program interpretation unit 210a of the machining simulation unit 210 reads out the machining program stored in the storage unit 208, performs the same control as the control performed by the machining apparatus 10 based on the machining program, and the machining apparatus 10 A processing time predicted to be required when cutting the workpiece 100 based on the processing program (in this specification, appropriately referred to as “predicted processing time”) is acquired. The machining program interpretation unit 210a also interprets whether the machining program command indicates the exchange of the machining tool 110. In addition, about the process which acquires the estimated machining time which such a machining program interpretation part 210a performs, since the well-known technique disclosed by Unexamined-Japanese-Patent No. 2002-73126 etc. can be applied, the detailed structure is mentioned, for example. The description of the operation is omitted.

  The machining tool usage time acquisition unit 210b of the machining simulation unit 210 is a time during which the spindle 24 is rotating while holding the machining tool 110 from the predicted machining time acquired by the machining program interpretation unit 210a as the machining tool usage time. To get. In other words, the machining tool usage time means each of the times during which the spindle 24 holds the machining tool 110 and rotates in each of the predicted machining times respectively acquired by the machining program interpretation unit 210a.

  The machining tool usage time accumulation unit 212 accumulates the machining tool usage time acquired by the machining tool usage time acquisition unit 210b for each machining tool 110.

  In the machining program, in order to use the autochanger function on the machining apparatus 10 side, the machining tool 110 for roughing is “No. 3”, the machining tool 110 for finishing is “No. 8”, etc. A command for pre-assigning a number to each of 110 is incorporated. The processing tool usage time acquisition unit 210b acquires the processing tool usage time of each processing tool 110 corresponding to the number specified by this command, and the processing tool usage time integration unit 212 corresponds to the number specified by the command. Then, the machining tool usage time is integrated for each machining tool 110.

  The display device control unit 214 controls the display of the display unit 204 so that the display unit 204 displays the accumulated machining tool use time for each machining tool 110 accumulated by the machining tool use time accumulation unit 212.

  In the above configuration, the operation of the machining apparatus 10 will be described. The machining apparatus 10 controls the driving of each of the motors including the motor 38 by the microcomputer 32 based on a machining program including tool path data. . By driving each motor, the spindle 24 is moved to an arbitrary position in the XYZ orthogonal coordinate system, and the processing tool 110 held by the spindle 24 is rotated around the Z axis. Thereby, in the processing apparatus 10, the process for cutting with respect to the to-be-processed object 100 mounted in the upper surface 28a of the table 28 based on the processing program corresponding to the shape of the desired three-dimensional structure to produce. Cutting processing is performed by the tool 110. In addition, about the cutting process in the above-mentioned processing apparatus 10, since a conventionally well-known technique can be applied, the detailed description is abbreviate | omitted.

  Next, a machining time prediction processing routine executed by the machining tool use time prediction apparatus 200 will be described with reference to the flowchart shown in FIG. When the processing tool usage time prediction device 200 is activated and an execution of the processing time prediction processing routine is instructed by an operator's operation on an operation panel (not shown) or the like, the processing tool usage time prediction device 200 controls the control unit. Under the control of 206, reading of the machining program executed by the machining apparatus 10 stored in the storage unit 208 is started. The machining program read by this machining time prediction processing routine may be determined in advance or may be specified by the operator using an operation panel (not shown). When reading of the machining program is started, first, it is determined whether or not there is an unprocessed command in the machining time prediction processing routine (step S402). If there is no unprocessed command in the machining time prediction processing routine, The machining time prediction processing routine is terminated. On the other hand, in the determination process of step S402, when it is determined that there is an unprocessed command in the machining time prediction process routine, the process proceeds to the process of step S404, and the command next to the processed command is acquired. When the process of step S404 is completed, the process proceeds to the process of step S406, and it is determined by the process of the machining program interpretation unit 210a whether the command acquired in step S404 is a command indicating replacement of the machining tool 110. In the determination process of step S406, when it is determined that the command acquired in step S404 is a command indicating replacement of the processing tool 110, the number of the processing tool 110 indicating that it is held on the spindle 24, The number is changed to the number of the processing tool 110 indicated by the command (step S408). When the process of step S408 is completed, the process returns to step S402, and the processes of the subsequent steps are repeated. On the other hand, in the determination process of step S406, when it is determined by the processing of the machining program interpretation unit 210a that the command acquired in step S404 is not a command indicating replacement of the machining tool 110, the process proceeds to step S410. In the process of step S410, the machining program interpretation unit 210a calculates a predicted machining time based on the command acquired in step S404. When the process of step S410 ends, the process proceeds to the process of step S412, and it is determined whether or not the command processed in step S410 is a command when the spindle 24 is rotating. If it is determined in step S412 that the command is not a command when the spindle 24 is rotating, the process returns to step S402, and the processes in the subsequent steps are repeated. On the other hand, if it is determined in step S412 that the command is for the spindle 24 rotating, the predicted machining time calculated in step S410 is acquired as the machining tool usage time, and the spindle The number of the processing tool 110 indicating that it is held at 24 and the processing tool usage time (that is, the predicted processing time calculated in step S410) are stored in association with each other (step S414). When the process of step S414 is completed, the machining tool use time of the number of the machining tool 110 stored in step S412 is added to the accumulated machining tool use time of the number of the machining tool 110 stored in step S412 and stored (step S416). ). When the process of step S416 is completed, the process returns to the process of step S402, and the processes of the subsequent steps are repeated. When the machining time prediction processing routine is completed as described above, the display control unit 214 controls the display unit 204 to display the stored contents in step S414. Thereby, the operator can determine the replacement timing of the processing tool 110 before actually cutting the workpiece 100 by the processing apparatus 10 by confirming the display content of the display unit 204. become able to.

  As described above, according to the present invention, since the time for using the processing tool can be predicted and displayed before the workpiece 100 is actually processed, the operator can easily determine the replacement time of the processing tool. can do.

  The embodiment described above may be modified as shown in the following (1) to (5).

  (1) In the above-described embodiment, the life of the processing tool 110 (that is, the maximum usable time of the processing tool 110) is stored in the storage unit 208, and the processing tool use time integration unit 212 is stored. When the accumulated machining tool usage time acquired by the above has exceeded the lifetime, the display unit 204 displays that the machining tool 110 scheduled to be used exceeds the lifetime, or a warning sound indicating that It is also possible to provide a configuration such as

  (2) In the above embodiment, the life of the machining tool is stored in the storage unit 208, and the accumulated machining tool use time acquired by the machining tool use time accumulation unit 212 is subtracted from the life as needed. The display unit 204 may display the usable time of the processing tool 110 scheduled to be used as needed.

  (3) In the above-described embodiment, the case where the processing device 10 and the processing tool usage time prediction device 200 are connected by wire communication via the line L has been described. However, the processing device 10 and the processing tool usage time prediction device are described. 200 may be connected by wireless communication instead of wired communication.

  (4) In the above-described embodiment, the case where the processing device 10 and the processing tool use time prediction device 200 are connected by wire communication via the line L has been described. However, the processing device 10 and the processing tool use time prediction device are described. 200 may not be connected to both.

  (5) You may make it combine suitably the embodiment shown above and the modification shown in said (1) thru | or (4).

  The present invention is suitable for use in a processing apparatus that cuts a workpiece with a processing tool for cutting.

  DESCRIPTION OF SYMBOLS 10 Processing apparatus, 20 Support member, 22 Carriage, 24 Spindle, 28 Table, 30 Tool holder, 32 Microcomputer, 100 Workpiece, 110 Processing tool, 200 Processing tool use time prediction apparatus, 202 Processing tool use time prediction part 202 , 204 Display unit 204, 206 Control unit, 208 Storage unit 208, 210 Machining simulation unit, 210a Machining program interpretation unit, 210b Machining tool usage time acquisition unit, 212 Machining tool usage time integration unit, 214 Display control unit

Claims (8)

Use of a processing tool for predicting a use time of the processing tool in a processing apparatus for cutting the work based on a processing program by a processing tool held and rotated by a spindle that moves relative to the work In the time prediction device,
Machining tool usage time prediction unit,
A display unit connected to the machining tool usage time prediction unit, and
The processing tool usage time prediction unit
A storage unit storing a processing program used when cutting a workpiece in the processing apparatus;
The machining program stored in the storage unit is read out, and the same control as that performed by the machining apparatus based on the machining program is performed in a pseudo manner, and the spindle of the machining apparatus rotates while holding a machining tool. A machining simulation unit that acquires time as machining tool usage time,
A machining tool usage time accumulating unit for accumulating the machining tool usage time acquired by the machining simulation unit for each machining tool to obtain an integrated machining tool usage time; and
A processing tool usage time prediction apparatus, comprising: a display control unit that controls the display unit to display the integrated processing tool usage time acquired by the processing tool usage time integration unit. In the processing tool usage time prediction apparatus according to claim 1,
The machining simulation unit
The machining program stored in the storage unit is read, and the same control as that performed by the machining apparatus based on the machining program is performed in a pseudo manner, and the machining apparatus cuts the workpiece based on the machining program. Machining program analysis unit for obtaining a predicted machining time predicted to be required when performing,
A machining tool usage time acquisition unit that acquires, as a machining tool usage time, a time during which the spindle of the processing device holds and rotates the machining tool from the predicted machining time acquired by the machining program analysis unit; A processing tool use time prediction apparatus comprising: In the processing tool usage time prediction apparatus according to any one of claims 1 and 2,
The machining tool usage time prediction apparatus, wherein the machining simulation unit processes the machining program for each command and acquires a machining tool usage time for each machining tool used in the machining program. The processing tool usage time prediction device according to any one of claims 1, 2, or 3,
A machining system, comprising: a machining device connected to the machining tool usage time prediction device. The cutting system according to claim 4, wherein
The machining apparatus according to claim 1, wherein the machining tool usage time prediction device performs machining in accordance with the machining program obtained by the integrated machining tool usage time. Use of a processing tool for predicting a use time of the processing tool in a processing apparatus for cutting the work based on a processing program by a processing tool held and rotated by a spindle that moves relative to the work In the time prediction method,
The machining program is read out, and the same control as that performed by the machining apparatus based on the machining program is performed in a pseudo manner, and the time during which the spindle of the machining apparatus holds and rotates the machining tool is acquired as the machining tool usage time. Machining simulation process;
A machining tool usage time integration step of accumulating the machining tool usage time acquired by the machining simulation step for each processing tool to obtain an integrated machining tool usage time;
And a display step for displaying the accumulated machining tool usage time acquired in the machining tool usage time integration step. In the processing tool usage time prediction method according to claim 6,
The machining simulation process includes:
It is predicted that the machining program is read out, and the same control as that performed by the machining apparatus based on the machining program is performed in a pseudo manner, and the machining apparatus is required to cut the workpiece based on the machining program. Machining program analysis process for obtaining the predicted machining time;
A processing tool usage time acquisition step of acquiring, as a processing tool usage time, a time during which the spindle of the processing device holds and rotates the processing tool from the predicted processing time acquired by the processing program analysis step; A machining tool usage time prediction method comprising: In the processing tool usage time prediction method according to any one of claims 6 and 7,
The machining tool use time prediction method, wherein the machining simulation step processes the machining program for each command and acquires a machining tool usage time for each machining tool used in the machining program.

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