Machining performance display method and machining performance display device for machine tool

Abstract

A method for displaying machining performance of a machine tool for completing machining of a workpiece (W) by one or more machining steps in which one or more machining centers (26A, 26B) are used and a plurality of tools (TL) are sequentially replaced via each machine tool to perform machining, the method being characterized in that in each machining step, the machining time (TM1, TM2, TM3) of each tool (TL) is measured and recorded, and the machining time (TM1, TM2, TM3) of each tool (TL) is measured and recorded by each machining center (26A, 26B). Machining times (TM1, TM2, TM3) recorded in at least one machining step of at least one machine tool are displayed in a chronological cumulative manner in a graph recognizable for each tool (TL), and a preset standard machining time (EMT) is displayed on the same time axis as the graph.

Description

Technical Field

[0001] This invention relates to a method and device for displaying machining results of machine tools. Background Technology

[0002] Machining time, a factor contributing to machine tool productivity, varies depending on various conditions, meaning it may be ahead of schedule or delayed. For example, when machining dozens or hundreds of identical workpieces using a single program, operator call instructions are written for each critical point in the initial stage of the machining cycle. Sometimes, the operator interrupts machining to check the machining status, dimensions, or partially correct the program. Furthermore, even after the machining cycle reaches a stable phase by machining a certain number of workpieces, there are cases where the machine tool suddenly stops due to overload or abnormal vibration alarms, requiring operator intervention to switch to manual mode and resume operation. Even without alarms, problems can sometimes be solved by overriding the feed rate and spindle speed using the machine tool's automatic functions. Therefore, a difference sometimes arises between the planned standard machining time and the actual machining time.

[0003] In this regard, Patent Document 1, focusing on measuring the time of each tool, discloses a machine tool control device for verifying automatic operation time improvement by measuring the cycle time and cutting time of each tool. This allows for a comprehensive view of whether the machine tool is operating within normal limits, which tool's cycle time is longer than the reference value, and which tool's cutting time has a problem. However, for further quantitative evaluation and analysis of the machine tool's productivity, it is preferable to be able to compare the standard machining time with the actual machining time for each machining operation.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 4312047 Summary of the Invention

[0007] In view of the above circumstances, the present invention aims to provide a machine tool processing performance display method and processing performance display device that displays the processing time and standard processing time of each processing step or each tool in the processing step at a glance, allowing the operator to easily analyze the causes of processing delays or advances.

[0008] According to one aspect of the present invention, a method for displaying machining performance of a machine tool is provided, wherein a workpiece is machined using one or more machine tools by sequentially changing multiple tools on each machine tool through one or more machining operations, wherein in each machining operation, the machining time of each tool is measured and recorded, and the machining time recorded in at least one machining operation of at least one machine tool is sequentially accumulated and displayed in a chart that can be identified for each tool, and a pre-set standard machining time is displayed on the same time axis as the chart.

[0009] Furthermore, according to one aspect of the present invention, a method for displaying machining performance of a machine tool is provided, wherein a workpiece is machined using one or more machine tools by sequentially changing multiple tools on each machine tool through one or more machining operations, wherein in each machining operation, the cutting time and non-cutting time of each tool are individually measured and recorded, and the cutting time and non-cutting time recorded in at least one machining operation of at least one machine tool are sequentially accumulated and displayed in a chart that can be identified for each tool, and the charts decomposed into the accumulated time of cutting time and the accumulated time of non-cutting time are arranged and displayed, and a pre-set standard machining time is displayed on the same time axis as the chart.

[0010] In addition, according to one aspect of the present invention, a machine tool processing performance display device is provided, which uses one or more machine tools to complete one or more processing steps by sequentially changing multiple tools on each machine tool to complete the processing of a workpiece. The device includes: a measurement and recording unit that measures and records the processing time of each tool in each processing step; and a display unit that sequentially accumulates and displays the processing time recorded in at least one processing step of at least one machine tool in a chart that can be identified for each tool, and displays a preset standard processing time on the same time axis as the chart.

[0011] According to one aspect of the present invention, a method for displaying machining performance of a machine tool involves using one or more machine tools to measure and record the machining time of each tool during one or more machining operations performed by sequentially changing multiple tools on each machine tool. Furthermore, the machining times recorded in at least one machining operation of at least one machine tool can be sequentially accumulated and displayed in a chart that can be identified for each tool, and a pre-set standard machining time can be displayed on the same timeline as the chart. Therefore, the machining time performance and standard machining time of each machining operation or each tool in the machining operation can be displayed at a glance. This allows the operator to easily analyze the causes of machining delays or lead times.

[0012] According to one aspect of the present invention, a machine tool machining performance display method involves using one or more machine tools to perform one or more machining operations by sequentially changing multiple tools on each machine tool. The cutting time and non-cutting time of each tool are individually measured and recorded. Furthermore, the cutting time and non-cutting time recorded in at least one machining operation on at least one machine tool can be sequentially accumulated and displayed in a chart that can be identified for each tool. The charts, decomposed into the accumulated cutting time and the accumulated non-cutting time, are arranged and displayed, and a pre-set standard machining time is displayed on the same time axis as the charts. Therefore, the cutting time and non-cutting time of each tool in the machining of a workpiece can be displayed at a glance. This allows the operator to easily analyze the causes of machining delays or lead times.

[0013] A machine tool machining performance display device according to one aspect of the present invention includes: a measurement and recording unit for measuring and recording the machining time of each tool; and a display unit for sequentially accumulating and displaying the machining time recorded in at least one machining operation of at least one machine tool in a chart recognizable for each tool, and displaying a preset standard machining time on the same time axis as the chart. Therefore, it is possible to sequentially accumulate and display the machining time recorded in one or more machining operations performed using one or more machine tools by sequentially changing multiple tools on each machine tool in a chart recognizable for each tool, and to display the preset standard machining time on the same time axis as the chart. Thus, by displaying the machining time performance and standard machining time of each machining operation or each tool in the machining operation at a glance, the operator can easily analyze the causes of machining delays or advances. Attached Figure Description

[0014] Figure 1 A top view of the production system involved in the implementation is shown.

[0015] Figure 2 A side view of the pallet rack according to the embodiment is shown.

[0016] Figure 3 A block diagram of the processing performance analysis apparatus involved in the embodiment is shown.

[0017] Figure 4 A Gantt chart showing the processing time for each tool.

[0018] Figure 5 A Gantt chart showing processing time and whether there is overrun.

[0019] Figure 6 A Gantt chart showing cutting time and non-cutting time is provided.

[0020] Figure 7This displays a list of processing times for the same process with different start times.

[0021] Figure 8 A Gantt chart showing the machining time and cutting time for each tool of the same machining process at different start times.

[0022] Figure 9 Examples of processing times for each type of workpiece are shown.

[0023] Figure 10 An example of the processing time for each workpiece is shown. Detailed Implementation

[0024] Hereinafter, with reference to the accompanying drawings, the machining performance analysis device 100, which is a machining performance display device for a machine tool according to the embodiment, will be described. The same or corresponding elements will be marked with the same symbols, and repeated descriptions will be omitted. For ease of understanding, the scale of the drawings may be changed during the description.

[0025] exist Figure 1 The diagram shows a schematic top view of a production system 10 used for processing various workpieces. Additionally, in... Figure 2 The diagram shows a schematic side view of the pallet rack (storage shelf) 12. The production system 10 includes a pallet P on which workpieces W are mounted, and a pallet rack 12 configured as a storage shelf for storing individual pallet P units. Figure 2 As shown, the pallet rack 12 has multiple storage areas S of different heights for storing pallets P, and each storage area S has a pair of foot members Sa for supporting the pallet P. The pallet rack 12 is electrically connected to a production system control device 110 for managing and controlling the processing steps, and is configured to communicate with the production system control device 110 information such as the type and number of workpieces W stored in the pallet rack 12.

[0026] like Figure 1 As shown, in production system 10, for the processing of workpiece W, one or more (in) are configured. Figure 1 The production system 10 includes machining centers 26A and 26B (two machine tools in total). Additionally, the production system 10 is equipped with pallet loading / unloading devices 34A and 34B (hereinafter referred to as "loading / unloading devices 34A and 34B") for operators to load or unload workpieces W onto or from pallet P. The loading / unloading devices 34A and 34B are electrically connected to the production system control device 110 and are configured to communicate with the production system control device 110 information such as the type and number of workpieces W loaded or unloaded from pallet P in the loading / unloading devices 34A and 34B.

[0027] The production system 10 includes a conveying system 14, which is used to convey the pallet P on which the workpiece W is mounted, in a manner that allows the workpiece W to be transferred between the pallet rack 12, the machining centers 26A, 26B and one or more loading and unloading devices 34A, 34B.

[0028] The conveying system 14 includes a conveying device 18, which comprises: a trolley 16 for horizontally moving a pallet P; a lifting device 20 and a loading platform 22 for vertically moving the pallet P; and a sliding device 24 for moving the pallet P toward the loading platform 22. The trolley 16 is configured to travel on a horizontally arranged track R so that the workpiece W can move between the pallet frame 12, machining centers 26A and 26B, and loading / unloading devices 34A and 34B. The lifting device 20 is configured to move vertically via a motor M such as a servo motor, and can move the loading platform 22 connected to the lifting device 20 in the vertical direction. Here, the axis direction parallel to the direction of movement of the trolley 16 is defined as the X-axis direction. Furthermore, the direction perpendicular to the X-axis direction in the horizontal direction is defined as the Z-axis direction. And, the direction parallel to the vertical direction of the lifting device 20 is defined as the Y-axis direction.

[0029] The sliding device 24 is disposed on the loading table 22 and has one or more sliding parts that move relative to the loading table 22 in the Z-axis direction, as well as forks (all omitted from the figure) that can engage with the pallet P. Therefore, in order to transfer the pallet P on which the workpiece W is mounted, the sliding device 24 can approach the machining centers 26A and 26B, the pallet rack 12, and the loading and unloading devices 34A and 34B via the sliding parts.

[0030] The conveying system 14 is electrically connected to the production system control device 110 and is configured to transfer workpiece W between the pallet rack 12, machining centers 26A and 26B and one or more loading and unloading devices 34A and 34B according to instructions from the production system control device 110.

[0031] like Figure 1 As shown, machining centers 26A and 26B include a machine tool body 32 and a pallet waiting workstation 36 with a pallet exchange device PC configured to interchangeably mount a pallet P containing a workpiece W before machining and a pallet P containing a workpiece W after machining. The pallet P containing the workpiece W is automatically transferred to the pallet waiting workstation 36 via a sliding device 24 of the transport system 14, or vice versa. Furthermore, machining centers 26A and 26B include an NC device 28 for controlling NC machining and a tool magazine 30 for storing tools TL mounted on the spindle 33 of the machine tool body 32.

[0032] like Figure 3As shown, the machining performance analysis device 100 is configured to obtain information related to the execution time of the machining program in the NC device 28, i.e., the machining time using the machining centers 26A and 26B, and whether there are any faults, and display this information on the machining program execution time information display unit 102 (hereinafter referred to as "execution time information display unit 102"), which serves as a display unit. Furthermore, the machining performance analysis device 100 is configured so that the operator can analyze the machining performance, including the machining time, displayed on the execution time information display unit 102 and correct the machining program.

[0033] Specifically, when a machining program is executed in the NC device 28, the NC device 28 sends machining program execution time information (in the figure F10) to the machining program execution time information acquisition unit 112, which serves as a measurement recording unit. The machining program execution time information acquired (received) in the machining program execution time information acquisition unit 112 is recorded in the machining program execution time information recording unit 114 (in the figure F20), which serves as a measurement recording unit. The machining program execution time information referred to here includes the machine tool identifier, the start and end times (machining time) of machining for each tool TL, the number of the machining program being executed, the feed overrun value, the program stop start (in execution) / stop (not executed) signal, the tool number (T number) installed on the spindle, the alarm number (in case of occurrence), the cutting feed start (cutting feed in progress) / stop (non-cutting feed in progress) signal, the NC device operation mode (memory operation mode, MDI mode, edit mode, etc.), and the process identifier.

[0034] The execution time information of the machining program is sent to the execution time information display unit 102 (F30 in the figure) so that the operator can easily analyze the causes of machining delays or advances, distinguish the machining time of each tool, and display it in the form of a Gantt chart as described later. In addition, in the following description, the execution time information display unit 102 is described as a display device embedded in the machining performance analysis device 100, but it is not limited to this. It can also be the display screen of a portable terminal held by the operator, the screen of the operation panel of the machining center 26A and 26B, and the screen of the computer used for process management.

[0035] Additionally, in the execution information display unit 102, during the machining process recorded in the machining program execution process information recording unit 116, information about the executed process (machining program execution process information) is displayed (in Figure F40). Here, the machining program execution process information includes process identification information (identifier, name, etc.), workpiece W identification information (identifier, name, etc.), the IDs of the executable machining centers 26A and 26B, the machining program number when the process is executed in each machining center 26A and 26B, and the standard execution time of the machining program (standard machining time EMT).

[0036] The operator, after confirming the machining performance displayed on the execution time information display unit 102, compares and analyzes the machining program execution time information and the machining program execution step information. Specifically, for example, the difference between the actual execution time and the standard execution time is compared. Furthermore, regarding the machining program execution time information, the machining program execution step information is referenced based on the machining center identifiers 26A and 26B and the machining program number. Here, the machining program name, program comments, etc., can also be used to include step identification information in the machining program execution time information. The analysis results are output in an operator-understandable form, such as a screen output or a report file output. Furthermore, the analysis results can also be output in a computer-processable form. Such output analysis results include machining program execution step information and information about the machining program to be corrected (the entire corrected machining program and / or the corrected parts).

[0037] The analysis results from the operator are sent to the machining program correction unit 120 (F50 in the figure) to correct the machining program. The corrected machining program is then sent to the NC device 28 of machining centers 26A and 26B to further modify or rewrite the machining program (F60 in the figure). Here, the machining program can be corrected manually by the operator or automatically by a computer.

[0038] The analysis results from the operator are also sent to the machining program execution process information correction unit 118 (F50 in the figure). Based on the analysis results, the machining program execution process information correction unit 118 corrects the machining program execution process information and records the corrected information in the machining program execution process information recording unit 116 (F70 in the figure). Specifically, for example, the standard execution time (EMT) is corrected. Here, the correction of the machining program execution process information can be performed manually by the operator or automatically by a computer.

[0039] Furthermore, here, it is assumed that the machining program execution information acquisition unit 112, machining program execution information recording unit 114, machining program execution process information recording unit 116, machining program execution process information correction unit 118, and machining program correction unit 120 are embedded in the production system control device 110. However, it is not limited to this. They can also be embedded in the NC device of the machining center, or they can be individually configured as computers independent of the machining center.

[0040] The following, via Figures 4 to 10 The following description of the display example of the execution time information display unit 102 illustrates the effects of the processing performance analysis device 100 and the processing performance display method according to this embodiment.

[0041] exist Figure 4For example, a machining center 26A is shown displaying the machining results of one operation (corresponding to one machining program) in which multiple tools TL1, TL2, TL3, etc., are sequentially changed to complete the machining of workpiece W. In the figure, other tools that perform machining for very short periods are shown between tools TL1 and TL2, but these are omitted for clarity. Specifically, the execution time information display unit 102 sequentially accumulates and displays the machining times TM1, TM2, TM3 of each of tools TL1, TL2, TL3 measured during the machining operation in a Gantt chart that identifies each tool TL. Furthermore, the execution time information display unit 102 can display multiple machining results with different start times side-by-side for the same workpiece W. Moreover, in the Gantt chart, the standard machining time EMT of the workpiece W, which is preset and recorded in the machining program execution operation information recording unit 116, can be displayed on the same timeline as the machining results.

[0042] exist Figure 4 As shown in the example, the machining results shown in the lower section of the figure (start time: 2023 / 4 / 17 11:00) are comparable to other machining results (upper and middle sections of the figure) in terms of machining times TM2 and TM3 for tools TL2 and TL3. On the other hand, for other tools TL1, the machining time TM1 is longer compared to other machining results. Furthermore, the total machining time in the middle section of the figure (start time: 2023 / 4 / 20 12:12) is longer than other machining results (upper and lower sections of the figure), exceeding the standard machining time EMT.

[0043] exist Figure 5 In addition to Figure 4 In addition to the Gantt charts for each of the tools TL1, TL2, and TL3 shown, it is also possible to display the timing (Gantt chart) of whether the feed rate overshoot (OD) changes. Figure 5 In the example shown, during the machining process in the middle of the diagram (start time: 2023 / 4 / 20 12:12), an over-range feed rate (OD) occurred, thus allowing us to understand its impact on the total machining time. By displaying the machining performance sequence (Gantt chart), we can identify the irregularities that caused the total machining time to be longer or shorter than the standard machining time (EMT). These irregularities include, for example, the presence or absence of alarms, changes in OD, switching of operating modes, and operator intervention. By displaying the machining performance on the execution information display unit 102, we can easily analyze the factors affecting the machining performance and improve productivity.

[0044] Furthermore, in Figure 6The example shown is an accumulation of the cutting time G01 and non-cutting time ST for each tool measured for each machining operation in a Gantt chart. To clearly compare the cutting time G01 and non-cutting time ST within the total machining time, a chart can be arranged to display the accumulated time decomposed into the amount of cutting time G01 and the accumulated time of non-cutting time ST. Here, G01 is the code number representing the cutting feed in the machining program, and G00 is used when representing the non-cutting time ST.

[0045] Figure 4 , Figure 5 as well as Figure 6 By linking the Gantt charts of the upper, middle, and lower sections, we can analyze the reasons for the long machining time TM1 of tool TL1 in the lower section. Tool TL1 is a measuring tool used to determine the reference point of workpiece W at the beginning of the machining process. Workpiece W is a casting with large deviations in shape and size. Therefore, it can be seen that the measuring probe approaches workpiece W with cutting feed G01 from the starting point of the measurement approach. However, sometimes the distance to the measuring point of workpiece W becomes longer, and the approach time becomes longer. Nevertheless, the reason why the total machining time is shorter than that of the upper and middle sections can also be analyzed. It can be seen that the lower section does not contain the final tool TL of the machining process in the upper and middle sections. The final tool is also a measuring tool, which samples whether the dimensions of the machined workpiece W converge to the allowable range. It can be seen that the upper and middle sections are Gantt charts for timings that occasionally conform to the sampling survey, while the lower section is for timings outside the sampling survey.

[0046] In addition, Figure 7 The diagram shows a display example for comparing the total processing time of the same process with different start times. It can be seen that the total processing time shown in the upper section of the diagram (start time: 2023 / 6 / 14 03:08) is considerably longer than other processing results (the middle and lower sections of the diagram), significantly exceeding the standard processing time (EMT). According to the processing result analysis apparatus 100 of this embodiment, in order to perform detailed analysis, it is configured to be able to... Figure 8 The display is toggled as shown. Figure 8 In the middle, for each machining record, a Gantt chart is shown above, displaying whether the over-control OD has changed, the machining time of each tool, the cutting time G01 and non-cutting time ST of each tool, and the cumulative time of cutting time G01 and the cumulative time of non-cutting time ST. Figure 8As shown in the example, a long processing wait time WT occurred in the processing results of the upper segment of the graph (start time: 2023 / 6 / 14 03:08). Therefore, during processing in the late-night hours when the operator is not present, it is possible to analyze factors such as the lack of workpiece W to be processed and the occurrence of defects in processing centers 26A and 26B. For example, appropriate countermeasures can be formulated, such as preparing a sufficient number of workpieces W for processing in the late-night hours.

[0047] The machining performance analysis apparatus 100 according to this embodiment includes a machining program execution time information acquisition unit 112 that measures and records the machining times TM1, TM2, TM3 of each of the tools TL1, TL2, TL3, and a machining program execution time information recording unit 114. Furthermore, the machining performance analysis apparatus 100 includes an execution time information display unit 102, which sequentially accumulates and displays the machining times TM1, TM2, TM3 recorded in at least one machining operation of machining centers 26A, 26B in a Gantt chart that can identify each of the tools TL1, TL2, TL3, and displays a preset standard machining time EMT on the same time axis as the Gantt chart. Therefore, the accumulated machining times TM1, TM2, TM3 of each of the tools TL1, TL2, TL3 in the Gantt chart can be compared with the preset standard machining time EMT and the machining performance (total machining time). This allows for a comprehensive overview of the processing performance and standard processing time for each processing step or tool TL1, TL2, TL3, enabling operators to easily analyze the causes of processing delays or advances.

[0048] Furthermore, according to the machining performance analysis device 100 of this embodiment, in one or more machining operations performed by sequentially changing multiple tools TL1, TL2, and TL3 in each machining center 26A and 26B, the cutting time G01 and non-cutting time ST can be sequentially accumulated and displayed in a Gantt chart that can identify each tool TL1, TL2, and TL3, and displayed in a Gantt chart decomposed into the accumulated time of cutting time G01 and the accumulated time of non-cutting time ST, and compared with a preset standard machining time EMT. Therefore, the cutting time G01 and non-cutting time ST in the machining of a workpiece W can be displayed at a glance. As a result, the operator can easily analyze the causes of machining delays or advances.

[0049] Furthermore, according to the processing performance analysis device 100 involved in this embodiment, such as Figure 9As shown, for each workpiece W of the same type that has been processed, the processing time can be accumulated to calculate the total processing time. The total processing time is then compared with a pre-set standard processing time (EMT) and grouped, and the results are displayed. Specifically, for each workpiece W of the same type (PART-A to PART-D in the figure), the first marker M1 of the first group is displayed, indicating that the total processing time (displayed as "Average" in the figure) falls within the range of the standard processing time (EMT) ("Expected" in the figure). Additionally, the second marker M2 of the second group is displayed, indicating that the total processing time is shorter than the range of the standard processing time (EMT), and the third marker M3 of the third group is displayed, indicating that the total processing time is longer than the range of the standard processing time (EMT). Figure 9 In the explicit example, in the case of processing "PART-C" in the figure, it can be immediately confirmed that the number of parts corresponding to Group 1, Group 2 and Group 3 are 423, 2 and 2 respectively.

[0050] The section below “PART-C” indicates that two workpieces W were processed between 13:45 and 14:46 on May 8, 2023. At this time, the standard processing time (EMT) was set to 00:10:20, and the average processing time for the two workpieces was 00:14:19. The two workpieces processed during this period were grouped (categorized) as workpieces processed with the standard processing time (EMT) set to 00:10:22. Since the standard processing time (EMT) is 00:10:22, and the average processing time is 00:14:19, the notation M3 indicates that the average processing time is longer than the allowable range of the standard processing time (EMT).

[0051] Additionally, when observing the middle section of the "PART-C" display, at 14:46 on May 8, 2023, the standard processing time (EMT) was updated to 00:15:27 based on operator or computer judgment. This indicates that two workpieces W were processed between 14:46 and 15:28 on the same day. At this time, the standard processing time (EMT) was set to 00:15:27, and the average processing time was 00:12:30. The two workpieces processed during this period were grouped (categorized) as workpieces processed with the standard processing time (EMT) set to 00:15:27. Since the standard processing time (EMT) is 00:15:27, and the average processing time is 00:12:30, the notation M2 indicates that the average processing time is shorter than the allowable range of the standard processing time (EMT).

[0052] Furthermore, when observing the upper part of the "PART-C" display, at 11:21 on May 9, 2023, the standard processing time EMT was updated to 00:12:47 based on operator or computer judgment. This indicates that 423 workpieces W were processed between 11:21 on May 9, 2023 and 21:00 on May 12, 2023. At this time, the standard processing time EMT was set to 00:12:47, and the average processing time was 00:12:48. The 423 workpieces processed during this period were grouped (categorized) as workpieces processed with the standard processing time EMT set to 00:12:47. Since the standard processing time EMT is 00:12:47, and the average processing time is 00:12:48, the notation M1 indicates that the average processing time is within the acceptable range relative to the standard processing time EMT (e.g., within ±10%).

[0053] Regarding the initial value of the standard machining time EMT on the next screen of "PART-C", the value is usually automatically calculated by the automatic programming device. However, in the initial stage of program execution, the operator often exercises oversight and processes carefully, generally displaying mark M3. The operator observes this display and performs a task to reset the standard machining time EMT to a longer value. At this time, when the combination of the standard machining time EMT and the total machining time (average machining time) is grouped and displayed as a mark, the operator can easily understand that the standard machining time EMT must be set longer and can quickly set the standard machining time EMT. In "PART-A" and "PART-D", mark M1 is also initially displayed, indicating that the standard machining time EMT must be set longer. When mark M2 is displayed in "PART-C", it is clear that the standard machining time EMT must also be set shorter.

[0054] When marker M1 is displayed in "PART-A", "PART-B", "PART-C", and "PART-D", the operator understands that the processing is progressing according to plan and can accurately predict the completion time of each workpiece W. Thus, when workpieces W processed according to the same standard processing time (EMT) over consecutive periods are grouped together, and the standard processing time (EMT) and total processing time (average processing time) are compared, with the differences displayed using markers M1, M2, and M3, the operator can clearly grasp the progress of the processing, contributing to improved productivity.

[0055] Furthermore, according to the processing performance analysis device 100 involved in this embodiment, such as Figure 10 As shown, the individual processing results (total processing time) of workpieces W of the same type can also be obtained. For example... Figure 10The lower section shows the total processing time for each workpiece W (in "Actual 1" and "Actual 2" in the figure), which can be compared with the average processing time (in "Average") and the standard processing time EMT (in "Expected") in the figure. This allows for the identification of workpieces W with significant variations in processing time, enabling operators to easily analyze the causes of processing delays or lead times.

[0056] As explained above, in the processing performance analysis device 100 and processing performance display method involved in this embodiment, the processing time performance and standard processing time (EMT) of each processing step or each of the tools TL1, TL2, and TL3 of the processing step are displayed in one overview, so that the operator can easily analyze the reasons for processing delays or advances.

[0057] The above describes the embodiments of the processing performance analysis device 100 and the processing performance display method, but the present invention is not limited to the above embodiments. In addition to the above, it is understood that those skilled in the art can conceive of various modifications of the above embodiments.

[0058] (Symbol Explanation)

[0059] 26A: Machining center (machine tool); 26B: Machining center (machine tool); 100: Machining performance analysis device (machining performance display device); 102: Machining program execution information display unit (display unit, execution information display unit); 110: Production system control device; 112: Machining program execution information acquisition unit (measurement recording unit); 114: Machining program execution information recording unit (measurement recording unit); M1: 1st mark; M2: 2nd mark; M3: 3rd mark; TL: Tool; TL1: Tool; TL2: Tool; TL3: Tool; TM1: Machining time; TM2: Machining time; TM3: Machining time.

Claims

1. A method for displaying machining results of a machine tool, comprising using one or more machine tools, and performing one or more machining operations by sequentially changing multiple tools on each machine tool to complete the machining of a workpiece, characterized in that, In each of the aforementioned processing steps, the processing time for each of the aforementioned tools is measured and recorded. The machining times recorded in at least one of the machining operations on at least one of the machine tools are displayed sequentially in a chart that can be identified for each of the tools. The pre-set standard processing time is displayed on the same timeline as the chart.

2. The machine tool machining performance display method according to claim 1, wherein, Arranged with the charts that can be displayed sequentially and cumulatively for each tool in at least one of the machining operations of the machine tool, other charts that can be displayed sequentially and cumulatively for each tool in the machining operations at other start times.

3. The machine tool machining performance display method according to claim 1, wherein, The charts, which are arranged in a time-accumulated manner for each tool, show the processing time recorded in at least one of the machining operations of at least one of the machine tools, and other charts that show the time-accumulated manner for changes in feed rate control.

4. The machine tool machining performance display method according to claim 1, wherein, For each of the workpieces that have completed processing, the total processing time is calculated by accumulating the processing time recorded for each of the tools. The data is categorized into three groups: a first group where the total processing time falls within a pre-set standard processing time range; a second group where the total processing time is shorter than the pre-set standard processing time range; and a third group where the total processing time is longer than the pre-set standard processing time range. The first, second, and third symbols representing the first, second, and third groups, respectively, are displayed in correspondence with the workpiece classification number of the workpiece.

5. A method for displaying machining results of a machine tool, comprising using one or more machine tools, and performing one or more machining operations by sequentially changing multiple tools on each machine tool to complete the machining of a workpiece, characterized in that, In each of the aforementioned machining operations, the cutting time and non-cutting time within the machining time of each tool are individually measured and recorded. The cutting time and non-cutting time recorded in at least one of the machining operations of at least one of the machine tools are sequentially accumulated and displayed in a chart that can be identified for each of the tools, and the charts decomposed into the cumulative time of the cutting time and the cumulative time of the non-cutting time are arranged and displayed. The pre-set standard processing time is displayed on the same timeline as the chart.

6. A machine tool machining performance display device, which uses one or more machine tools to complete the machining of a workpiece by sequentially changing multiple tools on each machine tool through one or more machining processes, characterized in that, have: The measurement and recording unit measures and records the processing time of each tool in each of the aforementioned processing steps; and The display unit will sequentially accumulate and display the machining time recorded in at least one of the machining operations of at least one of the machine tools in a chart that can be identified for each of the tools, and will display the preset standard machining time on the same timeline as the chart.

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