Determination device and control device

Abstract

A determination device (20) comprises: a display unit (80) that displays machining parameters (PX, PY, PZ) which an electrical discharge machine (10) uses for machining; a table (100) in which a plurality of types of environment parameters are associated with each of the plurality of machining parameters; an acquisition unit (92) that acquires a plurality of types of machining environment information (52) measured by the electrical discharge machine; a determination unit (94) that determines whether at least one of the machining parameters is appropriate for the machining environment of the electrical discharge machine; and a display control unit (96) that controls the display unit and causes the at least one machining parameter to be displayed in an identifiable manner.

Description

Technical Field

[0001] The present invention relates to a determination device and a control device.

Background Art

[0002] Japanese Patent Application Laid-Open No. 2015-89608 discloses a wire electrical discharge machining machine that performs machining based on machining conditions obtained by searching from machining conditions pre-stored in a control device.

Summary of the Invention

[0003] However, depending on the environment where the electrical discharge machining machine is installed, there is a problem that the shape accuracy etc. corresponding to the pre-stored machining conditions are not necessarily realized in actual machining.

[0004] An object of the present invention is to solve the above-described problems.

[0005] A first aspect of the present invention is a determination device, which includes a display unit that displays a plurality of the machining conditions in order to cause an operator to specify the machining conditions used by an electrical discharge machining machine for machining; a table in which a plurality of types of environmental conditions suitable for each of the plurality of machining conditions are associated with each of the plurality of machining conditions; an acquisition unit that acquires a plurality of types of machining environment information measured by the electrical discharge machining machine; a determination unit that determines whether at least one of the plurality of machining conditions is suitable for the machining environment of the electrical discharge machining machine by comparing the acquired plurality of types of machining environment information with the plurality of types of environmental conditions corresponding to at least one of the plurality of machining conditions; and a display control unit that controls the display unit to not display or to display in an identified manner at least one of the plurality of machining conditions when it is determined that at least one of the plurality of machining conditions is not suitable for the machining environment.

[0006] A second aspect of the present invention is a control device of an electrical discharge machining machine that performs machining on a workpiece by generating a discharge between an electrode and the workpiece according to the machining conditions specified by the operator, the control device having a determination device according to the first aspect.

[0007] According to the present invention, it is determined before machining whether machining accuracy etc. corresponding to machining conditions can be achieved in actual machining.

Brief Description of the Drawings

[0008]

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Embodiments for Carrying Out the Invention

[0009] (First Embodiment) FIG. 1 is a diagram showing a wire electrical discharge machine 10 and the determination device 20 in the first embodiment. The control device 30 of the wire electrical discharge machine 10 is connected to the determination device 20 via a communication network 40. The wire electrical discharge machine 10 relatively moves a wire electrode with respect to a workpiece according to processing conditions specified by an operator, and generates a discharge between the wire electrode and the workpiece. Thus, the wire electrical discharge machine 10 performs processing on the workpiece. The control device 30 controls the wire electrical discharge machine 10 to perform processing by discharge on the workpiece.

[0010] A sensor group 50 for measuring the processing environment is installed in the wire electrical discharge machine 10. The sensor group 50 includes at least one of, for example, a temperature sensor for measuring temperature, a specific resistance sensor for measuring the specific resistance of the processing fluid, and a vibration sensor for measuring vibration. The temperature sensor measures the temperature in the processing environment of the wire electrical discharge machine 10. The measured temperature is, for example, the temperature in the room where the wire electrical discharge machine 10 is installed.

[0011] The specific resistance sensor measures the specific resistance value of the machining fluid used for machining the object to be machined by the wire electrical discharge machining machine 10. The measured specific resistance value is the specific resistance value of the machining fluid in the machining tank. The vibration sensor measures the amplitude and frequency of the vibration generated when the wire electrical discharge machining machine 10 becomes a vibration source and the vibration received by the wire electrical discharge machining machine 10 from other vibration sources in the machining environment of the wire electrical discharge machining machine 10. The vibration from other vibration sources is transmitted to the wire electrical discharge machining machine 10 through the floor surface on which the wire electrical discharge machining machine 10 is installed.

[0012] Based on the measured values measured by the sensor group 50, the control device 30 generates multiple types of machining environment information 52. The types of machining environment information 52 include the temperature in the machining environment, the specific resistance value of the machining fluid used for machining, and the amplitude or frequency of the vibration generated in the machining environment. The determination device 20 acquires multiple types of machining environment information 52 measured by the wire electrical discharge machining machine 10 from the control device 30 via the communication network 40.

[0013] FIG. 2 is a block diagram showing the configuration of the determination device 20. The determination device 20 includes a processing circuit 60, a storage device 70, a display unit 80, and an input unit 82. The processing circuit 60 includes processors such as a CPU and a GPU.

[0014] The storage device 70 includes a volatile memory such as a RAM and a non-volatile memory such as a ROM and a flash memory. The non-volatile memory stores the programs executed by the processor and other necessary data. The volatile memory is used as the working memory of the processor.

[0015] The storage device 70 stores a table (table 100 described later) in which machining conditions are associated with environmental conditions. The storage device 70 further stores the above-mentioned multiple types of machining environment information 52. Specific examples of the multiple types of machining environment information 52 will be described later.

[0016] The display unit 80 includes, for example, a liquid crystal display or an organic EL display. The display unit 80 displays a plurality of machining conditions in order to allow the operator to specify the machining conditions used by the wire electrical discharge machining machine 10 for machining. The input unit 82 is, for example, a mouse, a keyboard, or a touch panel, etc. This touch panel is attached to the display screen of the display unit 80. The operator specifies the machining conditions used by the wire electrical discharge machining machine 10 for machining by operating the input unit 82.

[0017] The processing circuit 60 includes a reception unit 90, an acquisition unit 92, a determination unit 94, and a display control unit 96. By executing the program stored in the storage device 70 by the processing circuit 60, the reception unit 90, the acquisition unit 92, the determination unit 94, and the display control unit 96 are realized. At least a part of the reception unit 90, the acquisition unit 92, the determination unit 94, and the display control unit 96 may be realized by an integrated circuit such as an ASIC and an FPGA, or an electronic circuit including discrete devices.

[0018] The reception unit 90 receives the machining conditions specified by the operator via the input unit 82. The operator specifies the machining conditions used for machining by the wire electrical discharge machining machine 10 by operating the input unit 82.

[0019] The acquisition unit 92 acquires a plurality of types of machining environment information 52 measured by the wire electrical discharge machining machine 10 from the control device 30 of the wire electrical discharge machining machine 10. The plurality of types of machining environment information 52 acquired by the acquisition unit 92 is stored in the storage device 70.

[0020] The determination unit 94 reads out a plurality of types of environmental conditions suitable for the processing conditions received by the reception unit 90 from the table 100 in the storage device 70. The types of environmental conditions include the temperature in the processing environment, the resistivity value of the processing fluid used in the processing, and the amplitude or frequency of the vibration generated in the processing environment. The determination unit 94 compares the plurality of types of processing environment information 52 acquired by the acquisition unit 92 with the plurality of types of environmental conditions read from the table 100. By making such a comparison, it is determined whether the processing conditions specified by the operator (the processing conditions to be determined) are suitable for the processing environment of the wire electrical discharge machining machine 10.

[0021] Specifically, when all of the plurality of types of processing environment information 52 conform to the corresponding environmental conditions respectively, the processing conditions to be determined are determined as processing conditions suitable for the processing environment. In the present embodiment, the types of the processing environment information 52 and the environmental conditions include the temperature, resistivity, and vibration described above.

[0022] In this case, when all of the following three conditions (a), (b), and (c) are satisfied, the processing conditions to be determined are determined to be suitable for the processing environment. If at least one of the three conditions (a), (b), and (c) is not satisfied, the processing conditions to be determined are determined not to be suitable for the processing environment. (a) The processing environment information 52 regarding the temperature conforms to the environmental conditions regarding the temperature (b) The processing environment information 52 regarding the resistivity conforms to the environmental conditions regarding the resistivity (c) The processing environment information 52 regarding the vibration conforms to the environmental conditions regarding the vibration

[0023] When it is determined that the processing conditions to be determined are not suitable for the processing environment, the display control unit 96 controls the display unit 80 to display the processing conditions to be determined in an identifiable manner. The display control unit 96 causes the display unit 80 to display the processing conditions to be determined in an identifiable manner, for example, by displaying them lighter than other processing conditions.

[0024] The display control unit 96 may cause the display unit 80 to display a message to identify and display the machining conditions to be determined. The message indicates that the machining accuracy corresponding to the machining conditions to be determined cannot be obtained. In the present embodiment, as the machining accuracy corresponding to the machining conditions, the shape accuracy of the finish by machining is associated with each machining condition. The display control unit 96 may control the display unit 80 to display a message indicating machining environment information 52 that does not conform to the environmental conditions associated with the machining conditions to be determined.

[0025] FIG. 3 is a diagram illustrating a table 100 in which environmental conditions are associated with machining conditions PX, PY, and PZ. This table 100 is stored in the storage device 70. In the example shown in FIG. 3, three machining conditions PX, PY, and PZ are set in the table 100 for the individual MA of the wire electrical discharge machine 10. The machining condition PX corresponds to a shape accuracy of the finish by machining of ±20 μm. The machining condition PY corresponds to a shape accuracy of the finish by machining of ±10 μm. The machining condition PZ corresponds to a shape accuracy of the finish by machining of ±5 μm.

[0026] Note that instead of the shape accuracy of the finish by machining, another type of machining accuracy may be associated with each machining condition. As another type of machining accuracy, for example, the surface roughness of the finish by machining may be associated with each machining condition. Alternatively, instead of the machining accuracy, the machining speed may be associated with each machining condition.

[0027] As shown in FIG. 3, the types of environmental conditions are the temperature, specific resistance, and vibration described above. Regarding the temperature, a reference value is determined for each individual of the wire electrical discharge machine 10. In the individual MA of the wire electrical discharge machine 10, the reference value TA of the temperature is used. The reference value R of the specific resistance and the reference value A of the vibration are common values regardless of the individual of the wire electrical discharge machine 10.

[0028] In the example shown in FIG. 3, with respect to the processing condition PX, as environmental conditions, a range of ±10% with respect to the reference values of temperature, specific resistance, and vibration respectively is set as the allowable range. With respect to the processing condition PY, as environmental conditions, a range of ±5% with respect to the reference values of temperature, specific resistance, and vibration respectively is set as the allowable range. With respect to the processing condition PZ, as environmental conditions, a range of ±2% with respect to the reference values TA, R, and A of temperature, specific resistance, and vibration respectively is set as the allowable range. In this way, the environmental conditions suitable for the processing conditions PX, PY, and PZ respectively are set in the table 100.

[0029] FIG. 4 is a diagram illustrating the processing environment information 52 measured by the wire electrical discharge machining machine 10. This processing environment information 52 is stored in the storage device 70. In the example shown in FIG. 4, for the individual MA of the wire electrical discharge machining machine 10 that is measured, three types of processing environment information 52 are recorded in time series.

[0030] For example, at time C1, the measured value T1 of the processing environment information 52 regarding temperature, the measured value R1 of the processing environment information 52 regarding specific resistance, and the measured value A1 of the processing environment information 52 regarding vibration are recorded. As time passes like time C1, C2, C3, ···, CK, ···, three types of processing environment information 52 are repeatedly recorded. Note that, as the reference value TA (FIG. 3) of the temperature in the individual MA of the wire electrical discharge machining machine 10, an average value of some or all of the measured values T1, T2, T3, ···, TK, ··· of the processing environment information 52 regarding temperature may be used.

[0031] FIG. 5 is a diagram illustrating the processing conditions PX, PY, and PZ displayed on the display unit 80. In order to allow the operator to specify the processing conditions PX, PY, or PZ used by the wire electrical discharge machining machine 10 for processing, a plurality of processing conditions PX, PY, and PZ are displayed on the display unit 80. In the example shown in FIG. 5, fields RX, RY, and RZ corresponding to the three processing conditions PX, PY, and PZ respectively are displayed on the display unit 80.

[0032] As described above, since the display unit 80 is a touch panel, it also serves as the input unit 82. When the operator designates the processing condition PY, the finger FN of the operator touches the field RY. The reception unit 90 receives the designated processing condition PY. The determination unit 94 reads out three types of environmental conditions suitable for the processing condition PY from the storage device 70. These three types of environmental conditions are set in the table 100 shown in FIG. 3.

[0033] As environmental conditions regarding the temperature suitable for the processing condition PY in the individual MA of the wire electrical discharge machining machine 10, a reference value TA and an allowable range of ±5% are set in the table 100. As environmental conditions regarding the specific resistance suitable for the processing condition PY in the individual MA of the wire electrical discharge machining machine 10, a reference value R and an allowable range of ±5% are set in the table 100. As environmental conditions regarding the specific resistance suitable for the processing condition PY in the individual MA of the wire electrical discharge machining machine 10, a reference value R and an allowable range of ±5% are set in the table 100.

[0034] The determination unit 94 compares the three types of machining environment information 52 (see FIG. 4) measured by the wire electrical discharge machining machine 10 with the three types of environmental conditions (see FIG. 3) set in the table 100. The determination unit 94 determines whether the processing condition PY designated by the operator is suitable for the machining environment of the individual MA of the wire electrical discharge machining machine 10.

[0035] FIG. 6 is a diagram illustrating a message M1 indicating that the shape accuracy corresponding to the processing condition PY designated by the operator cannot be obtained. Assume that it is determined that the processing condition PY designated by the operator is not suitable for the machining environment. In this case, the display control unit 96 causes the display unit 80 to perform discriminative display by displaying the field RY corresponding to the processing condition PY thinner than the fields RX and RZ corresponding to the other processing conditions PX and PZ. In addition, the display control unit 96 causes the display unit 80 to perform discriminative display by displaying a message M1 indicating that the shape accuracy corresponding to the processing condition PY cannot be obtained.

[0036] FIG. 7 is a diagram illustrating a message M2 indicating machining environment information 52 that does not conform to the environmental conditions suitable for the machining conditions PY specified by the operator. The display control unit 96 causes the display unit 80 to display the message M2. In the example shown in FIG. 7, the difference DT between the measured value TK of the machining environment information 52 regarding temperature and the reference value TA of the temperature set as the environmental condition suitable for the machining conditions PY is displayed. It is also displayed that the difference DT exceeds the allowable range of ±5% with respect to the reference value TA of the temperature. Instead of the difference DT, the value of the ratio of the difference DT to the reference value TA, or the percentage of the value of the ratio, may be displayed in the message M2.

[0037] FIG. 8 is a flowchart showing a determination processing procedure regarding whether the machining conditions PX, PY, or PZ are suitable for the machining environment. This processing procedure is performed, for example, when the processing circuit 60 included in the determination device 20 executes a program stored in the storage device 70. When this processing procedure is started, in step S100, the acquisition unit 92 of the processing circuit 60 acquires a plurality of types of machining environment information 52 measured by the wire electrical discharge machining machine 10 from the control device 30 of the wire electrical discharge machining machine 10.

[0038] In step S110, the reception unit 90 of the processing circuit 60 determines whether the machining conditions PX, PY, or PZ have been specified by the operator via the input unit 82. If it is YES in step S110, the specified machining conditions PX, PY, or PZ are received by the reception unit 90, and this processing procedure proceeds to step S120. If it is NO in step S110, this processing procedure returns to step S100.

[0039] In step S120, the determination unit 94 of the processing circuit 60 reads out a plurality of types of environmental conditions suitable for the processing conditions PX, PY, or PZ received by the reception unit 90 from the storage device 70. In step S130, the determination unit 94 compares the plurality of types of processing environment information 52 acquired in step S100 with the plurality of types of environmental conditions read out in step S120. In step S140, the determination unit 94 determines whether the processing conditions PX, PY, or PZ specified in step S110 are suitable for the processing environment of the wire electrical discharge machining machine 10.

[0040] If the result in step S140 is YES, the processing conditions PX, PY, or PZ specified in step S110 are determined as the processing conditions to be used by the wire electrical discharge machining machine 10 for processing, and this processing procedure ends. If the result in step S140 is NO, this processing procedure proceeds to step S150. In step S150, the display control unit 96 of the processing circuit 60 controls the display unit 80 to display the processing conditions PX, PY, or PZ specified in step S110 in a lighter color than other processing conditions for identification display.

[0041] In step S160, the display control unit 96 displays messages M1 and M2 on the display unit 80 to identify and display the processing conditions PX, PY, or PZ specified in step S110. Message M1 indicates that the shape accuracy corresponding to the processing conditions PX, PY, or PZ specified in step S110 cannot be obtained (see FIG. 6). Message M2 indicates the processing environment information 52 that does not conform to the environmental conditions associated with the processing conditions PX, PY, or PZ specified in step S110 (see FIG. 7). When the processing in step S160 is completed, this processing procedure ends.

[0042] (Second Embodiment) In the determination device 20 according to the first embodiment, it is determined whether the machining conditions PX, PY, or PZ specified by the operator are suitable for the machining environment of the wire electrical discharge machining machine 10. In the determination device 20 according to the second embodiment, it is determined by the determination unit 94 of the processing circuit 60 whether each of the plurality of machining conditions PX, PY, and PZ is suitable for the machining environment of the wire electrical discharge machining machine 10. Regarding the determination device 20 according to the second embodiment, the description of the configuration and processing common to the determination device 20 according to the first embodiment is omitted.

[0043] FIG. 9A is a diagram illustrating the machining conditions PX, PY, and PZ displayed on the display unit 80 of the determination device 20 according to the second embodiment. The display control unit 96 of the processing circuit 60 causes the display unit 80 to separately display the machining conditions PY and PZ determined not to be suitable for the machining environment. In the example shown in FIG. 9A, the fields RY and RZ corresponding to the machining conditions PY and PZ are displayed lighter than the field RX corresponding to the machining condition PX determined to be suitable for the machining environment. Since the display unit 80 is also the input unit 82, the operator designates the machining condition PX determined to be suitable for the machining environment by touching the field RX. The reception unit 90 of the processing circuit 60 receives the machining condition PX designated by the operator.

[0044] In the example shown in FIG. 9B, unlike FIG. 9A, the fields RY and RZ corresponding to the machining conditions PY and PZ are not displayed. When the machining conditions PY and PZ are determined not to be suitable for the machining environment, the display control unit 96 controls the display unit 80 not to display the fields RY and RZ corresponding to the machining conditions PY and PZ. The operator designates the machining condition PX determined to be suitable for the machining environment by touching the field RX displayed on the display unit 80. The reception unit 90 receives the machining condition PX designated by the operator.

[0045] FIG. 10A is a diagram illustrating a message M3 indicating that the machining condition PY specified by the operator is not selectable. In the example shown in FIG. 9A, a state where the operator touches and specifies the field RY corresponding to the thinly displayed machining condition PY with the finger FN is shown in FIG. 10A. The reception unit 90 determines that a machining condition PY not suitable for the machining environment of the wire electrical discharge machining machine 10 has been specified. The display control unit 96 controls the display unit 80 to display a message M3 indicating that the specified machining condition PY is not selectable.

[0046] FIG. 10B is a diagram illustrating a message M4 indicating that the shape accuracy corresponding to the machining condition PY specified by the operator cannot be obtained. In the example shown in FIG. 9A, a state where the operator touches and specifies the field RY corresponding to the thinly displayed machining condition PY with the finger FN is shown in FIG. 10B.

[0047] The reception unit 90 determines that a machining condition PY not suitable for the machining environment of the wire electrical discharge machining machine 10 has been specified. The display control unit 96 controls the display unit 80 to display a message M4 indicating that the shape accuracy corresponding to the specified machining condition PY cannot be obtained. In that case, the machining condition PY may be made selectable even though the shape accuracy corresponding to the machining condition PY cannot be obtained.

[0048] FIG. 11 is a flowchart showing a determination processing procedure regarding whether the machining conditions PX, PY, and PZ are suitable for the machining environment. This processing procedure is performed, for example, by a processing circuit 60 included in the determination device 20 executing a program stored in a storage device 70. The reference numerals assigned to the steps of the present processing procedure shown in FIG. 11 partially match the reference numerals assigned to the steps of the processing procedure shown in FIG. 8. Since the same processing is executed in the steps where the reference numerals match, the description of the processing in those steps is omitted.

[0049] When this processing procedure is started, the processing in step S100 is performed. When the processing in step S100 is completed, in step S300, the determination unit 94 of the processing circuit 60 reads out a plurality of types of environmental conditions suitable for each of the plurality of processing conditions PX, PY, and PZ from the storage device 70. When the processing in step S300 is completed, this processing procedure proceeds to step S130.

[0050] If YES in step S140, this processing procedure proceeds to step S320. If NO in step S140, this processing procedure proceeds to step S310. In step S310, the display control unit 96 of the processing circuit 60 controls the display unit 80 to distinguish and display the processing conditions determined not to be suitable for the processing environment by displaying them lighter than other processing conditions. The processing conditions determined not to be suitable for the processing environment may not be displayed lightly but may be made non-displayed. When the processing in step S310 is completed, this processing procedure proceeds to step S320.

[0051] In step S320, the reception unit 90 of the processing circuit 60 receives the processing condition PX, PY, or PZ specified by the operator via the input unit 82. The reception unit 90 determines whether a processing condition not suitable for the processing environment of the wire electrical discharge machining machine 10 has been specified. If YES in step S320, this processing procedure proceeds to step S330. If NO in step S320, this processing procedure ends.

[0052] In step S330, the display control unit 96 causes the display unit 80 to display a message M3 indicating that the specified processing condition PX, PY, or PZ is not selectable. The display control unit 96 may cause the display unit 80 to display a message M4 indicating that the shape accuracy corresponding to the specified processing condition PX, PY, or PZ cannot be obtained. When the processing in step S330 is completed, this processing procedure ends.

[0053] [Modification Example] The above embodiment may be modified as follows.

[0054] (Modification Example 1) In the above embodiment, the determination device 20 performs a determination process on whether the processing conditions are suitable for the processing environment for one wire electrical discharge machine 10 (individual MA). However, the determination device 20 may perform a determination process on whether the processing conditions are suitable for the processing environment for each of a plurality of wire electrical discharge machines 10. FIG. 12 is a diagram showing a plurality of wire electrical discharge machines 10A, 10B, ···, 10N, ··· and the determination device 20 in the first modification.

[0055] A sensor group 50A for measuring the processing environment is installed in the wire electrical discharge machine 10A. The control device 30A generates a plurality of types of processing environment information 52A based on the measured values measured by the sensor group 50A. The determination device 20 acquires the plurality of types of processing environment information 52A measured by the wire electrical discharge machine 10A from the control device 30A via the communication network 40. The same process is performed for each of the other wire electrical discharge machines 10B, ···, 10N, ···.

[0056] FIG. 13 is a diagram illustrating a table 100 in which environmental conditions are associated with processing conditions PX, PY, and PZ. The plurality of wire electrical discharge machines 10A, 10B, ··· respectively correspond to the individuals MA, MB, ··· of the wire electrical discharge machine 10. In the table 100, the processing conditions PX, PY, and PZ corresponding to the individual MA (wire electrical discharge machine 10A) of the wire electrical discharge machine 10 are set.

[0057] In the table 100, the processing conditions PX, PY, and PZ corresponding to the individual MB (wire electrical discharge machine 10B) of the wire electrical discharge machine 10 are further set. Similarly, in the table 100, the processing conditions PX, PY, and PZ corresponding to each of the plurality of wire electrical discharge machines 10A, 10B, ··· are set. In the table 100, three types of environmental conditions suitable for each processing condition PX, PY, and PZ are set for each wire electrical discharge machine 10.

[0058] When the individual MB of the wire electrical discharge machining tool 10 is installed in an environment different from that of the individual MA of the wire electrical discharge machining tool 10, the environmental conditions of temperature are also different. Therefore, in the example shown in FIG. 13, the reference temperature value TB corresponding to the individual MB of the wire electrical discharge machining tool 10 is different from the reference temperature value TA corresponding to the individual MA of the wire electrical discharge machining tool 10.

[0059] The acquisition unit 92 of the processing circuit 60 acquires three types of machining environment information 52A, 52B,... measured by each of the plurality of wire electrical discharge machining tools 10A, 10B,.... The three types of machining environment information 52A, 52B,... acquired by the acquisition unit 92 are stored in the storage device 70. The determination unit 94 of the processing circuit 60 determines for each wire electrical discharge machining tool 10 whether each of the machining conditions to be determined is suitable for the machining environment. The display control unit 96 of the processing circuit 60 causes the display unit 80 to discriminatively display or not display the machining conditions determined not to be suitable for the machining environment for each wire electrical discharge machining tool 10.

[0060] (Modification 2) In the above embodiment, the control device 30 of the wire electrical discharge machining tool 10 is connected to the determination device 20 via the communication network 40. However, the control device 30 of the wire electrical discharge machining tool 10 may include the determination device 20. The processing circuit 60, the storage device 70, the display unit 80, and the input unit 82 of the determination device 20 may have the same hardware as the processing circuit, the storage device, the display unit, and the input unit of the control device 30.

[0061] FIG. 14 is a diagram showing an example in which the control device 30 of the wire electrical discharge machining tool 10 has the determination device 20 in Modification 2. A sensor group 50 for measuring the machining environment is installed in the wire electrical discharge machining tool 10. The control device 30 or the determination device 20 generates a plurality of types of machining environment information 52 based on the measured values measured by the sensor group 50. The determination device 20 compares the machining environment information 52 measured by the wire electrical discharge machining tool 10 with the environmental conditions set in the table 100. The determination device 20 determines whether the machining conditions to be determined are suitable for the machining environment of the wire electrical discharge machining tool 10. The determination device 20 performs display control similar to that in the above embodiment according to the determination result.

[0062] (Modification Example 3) As the above embodiment, the wire electrical discharge machining machine 10 has been described as an example. However, the electrical discharge machining machine is not limited to the wire electrical discharge machining machine 10. For example, a die-sinking electrical discharge machining machine may be used.

[0063] (Modification Example 4) The above embodiment and modification examples may be arbitrarily combined.

[0064] The present invention is not limited to the above-described embodiment and modification examples, and various configurations can be adopted without departing from the gist of the present invention.

[0065] [Invention Obtained from Embodiment] The invention that can be grasped from the above embodiment and modification examples will be described below.

[0066] (1) The determination device (20) includes a display unit (80) that displays a plurality of the processing conditions (PX, PY, PZ) used by the electrical discharge machining machine (10) for the operator to specify, a table (100) in which a plurality of types of environmental conditions suitable for each of the plurality of the processing conditions are associated with each of the plurality of the processing conditions, an acquisition unit (92) that acquires a plurality of types of processing environment information (52) measured by the electrical discharge machining machine, and a determination unit (94) that determines whether at least one of the processing conditions is suitable for the processing environment of the electrical discharge machining machine by comparing the acquired plurality of types of the processing environment information with the plurality of types of the environmental conditions corresponding to at least one of the plurality of the processing conditions, and a display control unit (96) that controls the display unit to not display or to display in an identifiable manner at least one of the processing conditions when it is determined that at least one of the processing conditions is not suitable for the processing environment. Thereby, it is determined before processing whether the processing accuracy or the like corresponding to the processing conditions can be achieved in actual processing.

[0067] (2) The display control unit may perform identification display by displaying at least one of the processing conditions in a lighter manner than the other processing conditions. Thereby, it is possible to draw the operator's attention to the fact that the processing accuracy etc. corresponding to the processing conditions cannot be obtained.

[0068] (3) The determination device further includes a reception unit (90) that receives the processing conditions specified by the operator for use in the processing. When the processing conditions specified by the operator are not suitable for the processing environment, the display control unit displays a first message (M1, M3, M4) indicating that the processing conditions specified by the operator cannot be selected or that the processing accuracy or processing speed corresponding to the processing conditions cannot be obtained, thereby performing identification display of the processing conditions. Thereby, it is possible to strongly draw the operator's attention to the fact that the processing accuracy etc. corresponding to the processing conditions cannot be obtained.

[0069] (4) The determination unit may determine whether the processing conditions specified by the operator are suitable for the processing environment. Thereby, it is not necessary to perform determination processing for other processing conditions.

[0070] (5) The determination unit may compare the acquired multiple types of processing environment information with the multiple types of environment conditions corresponding to each of the multiple processing conditions to determine whether each of the multiple processing conditions is suitable for the processing environment of the electrical discharge machining machine. Thereby, the operator can specify processing conditions suitable for the processing environment.

[0071] (6) The determination unit may determine that the processing conditions for which all of the multiple types of processing environment information correspond to the corresponding environment conditions are the processing conditions suitable for the processing environment, and determine that the processing conditions for which at least one of the multiple types of processing environment information does not correspond to the corresponding environment conditions are the processing conditions not suitable for the processing environment. Thereby, it is possible to accurately determine whether the processing conditions are suitable for the processing environment.

[0072] (7) If there are machining conditions unsuitable for the machining environment, the display control unit may cause the display unit to display a second message (M2) indicating the machining environment information that does not conform to the environmental conditions. Thereby, the operator can grasp the factor that the machining conditions are not suitable for the machining environment.

[0073] (8) The second message may include a value corresponding to the difference (DT) between the reference value (TA) of the environmental conditions and the measured value (TK) of the machining environment information that does not conform to the environmental conditions. Thereby, the operator can grasp how much the measured value of the machining environment information deviates from the reference value.

[0074] (9) The types of the machining environment information and the environmental conditions may include the temperature in the machining environment, the specific resistance of the machining fluid used for the machining, or the amplitude or frequency of the vibration generated in the machining environment. Thereby, it is possible to more accurately determine whether the machining conditions are suitable for the machining environment.

[0075] (10) The acquisition unit acquires a plurality of types of the machining environment information measured by each of the plurality of electric discharge machines, and the determination unit determines whether each of the plurality of machining conditions is suitable for the machining environment for each electric discharge machine. In each of the plurality of electric discharge machines, when it is determined that at least one of the machining conditions is not suitable for the machining environment, the display control unit may not display or may display at least one of the machining conditions in an identifiable manner. Thereby, for each of the plurality of electric discharge machines, the determination process regarding whether the machining conditions are suitable for the machining environment can be performed by one determination device.

[0076] (11) A control device (30) of the electric discharge machine that performs the machining on the workpiece by generating a discharge between the electrode and the workpiece according to the machining conditions specified by the operator, and the determination device is included. Thereby, the determination process regarding whether the machining conditions are suitable for the machining environment can be performed by the control device of the electric discharge machine.

Explanation of Reference Numerals

[0077] 10… Wire electrical discharge machining machine 20… Judgment device 30… Control device 40… Communication network 50… Sensor group 52… Machining environment information 60… Processing circuit 70… Storage device 80… Display unit 82… Input unit 90… Reception unit 92… Acquisition unit 94… Judgment unit 96… Display control unit 100… Table

Claims

1. A display unit (80) for displaying a plurality of the machining conditions in order to allow an operator to specify the machining conditions (PX, PY, PZ) used by the electric discharge machining machine (10) for machining; A table (100) in which a plurality of types of environmental conditions suitable for each of the plurality of the machining conditions are associated with each of the plurality of the machining conditions; An acquisition unit (92) for acquiring a plurality of types of machining environment information (52) measured by the electric discharge machining machine; By comparing the acquired plurality of types of the machining environment information with the plurality of types of the environmental conditions corresponding to at least one of the plurality of the machining conditions, a determination unit (94) for determining whether or not at least one of the machining conditions is suitable for the machining environment of the electric discharge machining machine; A display control unit (96) that, when it is determined that at least one of the machining conditions is not suitable for the machining environment, controls the display unit so as not to display or to display at least one of the machining conditions in a distinguishable manner; A determination device (20) comprising:

2. The determination device according to claim 1, wherein the display control unit displays at least one of the machining conditions in a distinguishable manner by displaying it lighter than the other machining conditions.

3. The determination device according to claim 1 or 2, wherein further comprising a reception unit (90) for receiving the machining conditions specified by the operator for use in the machining, and when the machining conditions specified by the operator are not suitable for the machining environment, the display control unit displays a first message (M1, M3, M4) indicating that the machining conditions specified by the operator cannot be selected or that machining accuracy or machining speed corresponding to the machining conditions cannot be obtained, thereby displaying the machining conditions in a distinguishable manner.

4. The determination device according to claim 3, wherein The determination unit is a determination device that determines whether the processing conditions specified by the operator are suitable for the processing environment.

5. The determination device according to any one of claims 1 to 3, The determination unit determines whether each of the plurality of processing conditions is suitable for the processing environment of the electrical discharge machine by comparing the plurality of types of acquired processing environment information with the plurality of types of environmental conditions corresponding to each of the plurality of processing conditions.

6. The determination device according to any one of claims 1 to 5, The determination unit determines the processing conditions in which all of the plurality of types of processing environment information conform to the corresponding environmental conditions as the processing conditions suitable for the processing environment, and determines the processing conditions in which at least one of the plurality of types of processing environment information does not conform to the corresponding environmental conditions as the processing conditions not suitable for the processing environment.

7. The determination device according to claim 6, When there are processing conditions not suitable for the processing environment, the display control unit causes the display unit to display a second message (M2) indicating the processing environment information that does not conform to the environmental conditions.

8. The determination device according to claim 7, The second message includes a value corresponding to the difference (DT) between the reference value (TA) of the environmental condition and the measured value (TK) of the processing environment information that does not conform to the environmental condition.

9. The determination device according to any one of claims 1 to 8, The types of the processing environment information and the environmental conditions include the temperature in the processing environment, the specific resistance of the processing fluid used in the processing, or the amplitude or frequency of the vibration generated in the processing environment.

10. The determination device according to any one of claims 1 to 3, The acquisition unit acquires a plurality of types of the machining environment information measured by each of the plurality of electric discharge machines, The determination unit determines, for each of the plurality of electric discharge machines, whether or not each of the plurality of machining conditions is suitable for the machining environment, In each of the plurality of electric discharge machines, when it is determined that at least one of the machining conditions is not suitable for the machining environment, the display control unit does not display or displays for identification at least one of the machining conditions, a determination device.

11. A control device (30) of an electric discharge machine that performs machining on a workpiece by generating a discharge between an electrode and the workpiece according to the machining conditions specified by the operator, A control device having the determination device according to any one of claims 1 to 9.

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