JPWO2020149280A1 - Real-time machining status display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a real-time machining state display device for mapping a state on a machining path of a machining tool at the tip of a machine tool. SOLUTION: This real-time machining state display device is a measuring means for monitoring at least one or more physical quantity data of temperature, acceleration or stress of a machining tool in time series, and an operation control means (CNC) of a machine tool. Machining is based on the position acquisition means that reads the time-series coordinates of the machining tool in operation from the time information and the position information, the time-series physical quantity data from the sensor, and the time-series coordinate data from the position acquisition means. It has a mapping means for converting physical quantity data at coordinates on the path into visualization data and displaying it at a position on the machining path. [Selection diagram] Fig. 2

Description

The present invention relates to a real-time machining state display device capable of visualizing in real time physical changes such as temperature and acceleration at machining positions of tools and the like of machine tools.

Machining In machine tools such as cutting equipment, it is required to evaluate tool wear, fatigue, breakage, "chatter", etc. during actual machining in order to improve machining accuracy and prevent tool breakage. .. However, in the past, tool makers have been evaluated by device makers and tool makers for each device and tool, and they are limited to those based on general evaluation criteria and academically standardized evaluation criteria, and are actually evaluated at the time of machining. Real-time verification of the tool was not possible.

In response to this, the applicant has developed and provided a tool holder unit for machine tools that can measure the temperature and acceleration during machining of rotary tools, and has also developed and provided anomaly prediction technology such as tool breakage based on this measurement result. (Patent Documents 1 to 3). This technology is advantageous in that it can detect physical changes of tools and the like during machining in real time, and can detect abnormalities with an external device (such as a personal computer) capable of wireless communication with tools and machine tools. For example, it is possible to monitor the acceleration in ball end mill machining and detect the occurrence of so-called "chatter" in which the machining accuracy tends to decrease.

However, conventionally, there is a problem that changes in the temperature, acceleration, etc. of the detected tool are time-series, and even if an abnormality is detected, it is difficult to know the details of which machining position it is. For example, as described above, even if it is possible to measure and monitor the acceleration during ball end mill machining and determine that the acceleration exceeds the threshold value and "chatter" occurs, "chatter" actually occurs in the machining at any position. It was difficult to immediately tell if it was, and it was difficult to identify the "chatter" part in the processing target when processing a complicated shape. It is considered that this is an obstacle to the provision of a society in which high-precision machining is guaranteed by widely utilizing real-time measurement data such as tool temperature and acceleration at general machining sites.

International Publication WO2015-022967 International Publication WO 2016-136919 Japanese Unexamined Patent Publication No. 2018-54611

The present invention was created in view of the above circumstances, and physical changes such as temperature and acceleration in machining tools such as machine tool tools are displayed at the same time as the three-dimensional position of machining, and occur at the actual machining position. It is an object of the present invention to provide a real-time processing status display device that visualizes the current situation in real time.

Specifically, in order to achieve the above object, the real-time processing state display device of the present invention is used.
It is a real-time machining status display device that maps the status on the machining path of the machining tool at the tip of the machine tool.
A measuring means that monitors at least one or more physical quantity data of the temperature, acceleration, or stress of the machining tool in chronological order.
A position acquisition means that reads the time-series coordinates of the machining tool in operation from the time information and position information of the machine tool motion control means (CNC).
Based on the time-series physical quantity data from the measuring means and the time-series coordinate data from the position acquisition means, the physical quantity data at the coordinates on the machining path is converted into visualization data and displayed at the position on the machining path. It has a mapping means to be used.

According to the real-time machining state display device of the present invention, changes in temperature, acceleration, and stress of a machining tool used in a machine tool can be mapped and displayed on a machining path. Specifically, the temperature, acceleration, and stress of the machining tool are monitored in real time, and the measurement data output in chronological order is displayed on the position / time axis of the machining tool based on the machine tool control numerical information (CNC). It is converted into data, and the status of the processing tool at each coordinate is plotted and mapped by changing the color. This makes it possible to easily understand where in the three-dimensional coordinates the state change of the machining tool, which was conventionally difficult to understand only as a change in the measured value in a predetermined time, occurs. For example, when so-called "chatter" occurs in ball end mill machining as described above, the acceleration of the machining tool increases, and the more complicated the shape is machined, the greater the problem of deterioration of machining accuracy and tool breakage due to "chatter". It is advantageous to use this device because it is possible to identify at a glance at which position on the machining path the "chatter" is occurring.

Further, it is preferable that the mapping means converts the physical quantity data into a color designation value set in advance corresponding to a predetermined numerical value of the physical quantity data, and displays the color designation value on the pixel corresponding to the coordinate data. ..

Specifically, the mapping means sets a color specification value (RGB value) corresponding to a predetermined measured value of temperature, acceleration, and stress in advance, and displays the color specified value corresponding to the actual measured value on the display screen. It is displayed in the pixel showing the 3D coordinates of the processing tool of.

Further, as an example of the real-time machining state display device, the measuring means has a thermocouple inserted in the machining tool and a temperature measuring unit that outputs information from the thermocouple as temperature data.
The time-series coordinate data from the position acquisition means is coordinate data in the three-dimensional XYZ direction, and the mapping means displays temperature data in the XY plane, the XY plane, and the YZ plane based on the coordinate data. Or,
The measuring means has an acceleration sensor arranged in a machine tool or a tool holder held by the machine tool, and an acceleration measuring unit that outputs information from the acceleration sensor as acceleration data.
The time-series coordinate data from the position acquisition means is coordinate data in the three-dimensional XYZ direction, and the mapping means displays temperature data in the XY plane, the XY plane, and the YZ plane based on the coordinate data. , There is.

As an actual display example, the data obtained by inserting a thermocouple into the machining tool and measuring the temperature, or the data measured by the acceleration sensor arranged in the tool holder connected to the spindle of the machine tool to hold the machining tool. , XY plane view, XZ plane viewpoint and YZ plane view are preferable because all three-dimensional positions of the processing tool and the measured values of temperature and acceleration can be visualized on one display screen.

Further, the machine tool is a rotation tool that rotates the processing tool to process the work, and the acceleration sensor is positioned radially symmetrically with respect to the center of the rotation axis of the rotation tool on a horizontal plane in the tool holder. In some cases, it is composed of a pair of accelerometers arranged in a row and a pair of accelerometers arranged at positions having a phase different from each other by approximately 90 °.

According to this real-time machining status display device, acceleration in the horizontal direction and rotation direction can be detected, so that, for example, abnormal vibration during cutting can be understood at a glance at the position on the machining path and the measured value, and the machining accuracy. It is possible to visualize the cause of the drastic decrease in the amount of water, the so-called "chatter" that is a sign of tool breakage, and the occurrence of the stick-slip phenomenon during tapping. Furthermore, it is possible to search for the optimum machining conditions for the rotation speed, feed amount, and depth of cut of the machining tool, and at the same time achieve and achieve both speed and safety (prevention of tool damage), which is a contradictory event. be able to.

Further, the mapping means at least displays the temperature data or acceleration data in the XY plane in the XY plane display window, displays the temperature data or acceleration data in the XZ plane in the XZ plane display window, and displays the temperature data in the YZ plane. Alternatively, it is preferable to display the acceleration data in the YZ plane display window and display the preset color designation values corresponding to the numerical values of the temperature data or the acceleration data in the color conversion table window.

According to this real-time processing state display device, temperature measurement data and acceleration measurement data can be displayed in XY plane view, XZ plane viewpoint and YZ plane view on one display screen, and at the same time, how much the plotted color is the measured value. It is advantageous because it is possible to visualize whether or not it indicates whether or not it is approaching the limit.

Further, in the other real-time machining state display device of the present invention, the machine tool from the measuring means provided in the machine tool for measuring the physical quantity data of one or more of the temperature, acceleration or stress of the machining tool and the operating state of the machine tool. The measurement means for monitoring the measurement data in the time series, the physical quantity data in the time series from the measurement means, the measurement data from the machine tool, or the change over time of both data are displayed on the same time axis.

According to this real-time machining status display device, in addition to the measurement data of the temperature, acceleration, and stress of the machining tool, the measurement data of machine tools such as servo motors, acceleration pickups, power meters, and displacement meters can be displayed on a time chart on the same time axis. By displaying in real time, the accuracy of machining abnormality detection can be improved.

Further, another invention provides a real-time machining state display device that displays a state change on a machining path of a machining tool at the tip of a machine tool. This real-time machining status display device measures and stores one or more physical quantity data of the temperature, acceleration, or stress of the machining tool at the reference time, and is operating from the time information and position information of the motion control means of the machine tool. A machine tool that measures and saves physical quantity data measured and saved by the reference data creation means that creates reference data by reading the time-series coordinates of the machining tool and the reference data creation means that is at a predetermined time elapsed from the reference time. The comparison data creation means for creating comparison data by reading the time-series coordinates of the machining tool in operation from the time information and position information of the operation control means, the reference data creation means, and the comparison data creation means. A comparison calculation means that calculates the difference in physical quantity data in the time-series coordinates of the machining tool read from, and the difference in physical quantity data calculated by the comparison calculation means is machined based on the time-series coordinates of the machining tool. It has a display means for displaying at coordinates on the path.

With this real-time machining status display device, it is possible to quantitatively evaluate changes over time, deterioration, abnormalities, etc. of machining tools, machine tools and their parts, reducing the frequency of defective products, improving machining dimensional accuracy, and covering. It is possible to improve the quality of the machined surface of the work piece.

According to the real-time machining state display device of the present invention, for changes in physical quantities such as temperature and acceleration in machining tools such as tools of machine tools, the three-dimensional coordinates of the machining position and the physical quantities such as temperature and acceleration are simultaneously displayed and actually displayed. By displaying the situation occurring at the machining position in real time, it is possible to visualize the abnormality detection location and its physical quantity even in complicated shape machining.

It is a schematic diagram which shows the relationship between acceleration and "chatter" in machine tool machining, the conventional measurement data, and the image of the data displayed by the real-time machining state display device of the present invention. (A) is a conventional display result image of the acceleration of the machining tool that monitors the acceleration of the machining tool of FIG. 1, and (b) is a display result image of the acceleration of the machining tool in this real-time machining state display device. .. (A) shows an example of a screen that measures and displays the acceleration and temperature in real time when an actual workpiece is cut with a machining tool with this real-time machining status display device, and (b) actually cuts. A plan view photograph of an example of the workpiece being machined is shown. A specific processing flow example 1 in this real-time processing state display device is shown. A specific processing flow example 2 in this real-time processing state display device is shown. A specific processing flow example 3 in this real-time processing state display device is shown. A specific processing flow example 4 in this real-time processing state display device is shown.

A specific processing flow example of the configuration of the real-time processing state display device of the present invention described above will be described.

FIG. 1 is a conceptual diagram illustrating “chatter” during machining of a ball end mill used for milling as an example of a machining tool. The ball end mill 1 is provided with a spherical cutting edge at the tip and is mounted on a spindle of a machining center as a processing device. FIG. 1 shows the state of the ball end mill 1 at each position (a) to (d) when the workpiece 2 to be cut by the ball end mill 1 has undulations in the vertical direction. In this real-time machining state display device, the ball end mill 1 can monitor the acceleration and temperature of the cutting edge at the tip in real time, and the acceleration monitoring will be described below focusing on the "chatter" detection.

In FIG. 1A, the tip (cutting edge) 1a of the ball end mill 1 is in contact with the high position 2a on the surface of the workpiece 2, and this position is assumed to be the machining start position. When the ball end mill 1 moves to the right with respect to the workpiece 2 while cutting from there, the height of the workpiece 2 becomes lower, and at the position (b), the height of the ball end mill is lower than the low position 2b of the workpiece 2. The tip 1a floats in the height direction, and the right side is pressed by the workpiece to be cut while cutting. At this time, the acceleration of the ball end mill 1 becomes large, and a large "chatter" occurs as shown by the arrow in (b). After that, the ball end mill 1 moves further to the right side, and the height of the workpiece 2 becomes higher. At the position (c), when the tip 1a of the ball end mill comes into contact with the surface of the high position 2c of the workpiece 2, the acceleration becomes small and the "chatter" disappears. Further, when the tip 1a of the ball end mill moves to the right and rises to a height slightly lower than the position (b), the acceleration of the ball end mill 1 again reaches an intermediate level between the accelerations at the positions (b) to (c). It grows larger and causes moderate "chatter" as shown by the arrow in (d).

FIG. 2 exemplifies the conventional display result of the acceleration monitored by the ball end mill 1 of FIG. 1 and the display result by the real-time machining state display device. FIG. 2A is a conventional display result, in which the time axis (time [s]) is the horizontal axis and the acceleration [m / s2] at each time is the vertical axis. In the example of FIG. 2A, for example, at the position of (b), the acceleration is the largest as at the position of FIG. 1 (b), and at the position of (c), the acceleration is smaller as at the position of FIG. 1 (c). At the position (c), the acceleration increases again as in the position (d) of FIG. In the case of the display method of FIG. 2A, there is a problem that it is difficult to grasp at first glance because it is not possible to visualize which position of the workpiece 2 is the position where the acceleration is large and "chatter" occurs (b). be.

On the other hand, FIG. 2B is an example of display results in the real-time machining state display device of the present invention, in which the lateral position (position in the X direction ([mm]) of the cutting edge 1a of the ball end mill 1 is the horizontal axis. The vertical axis is the position in the height direction (position in the Z direction ([mm]) of the cutting edge 1a of the ball end mill 1. Further, the look-up table shown in the upper right of FIG. 2B. In 4, the magnitude of acceleration is displayed in color, and the color changes stepwise from the leftmost color (min.) To the rightmost color (max.) (Although it is a gray scale display in this figure, it is actually displayed. (Displayed in color). Further, the acceleration display 3 in the figure actually shows the machining path (trajectory) of the cutting edge 1a of the ball end mill 1 in the XZ direction, and the machining path (trajectory) at the position on the machining path is shown. The acceleration is displayed in the color corresponding to the lookup table 4 described above. For example, at the position (b) in FIG. 2, the maximum is the same as the position (b) in FIG. 1 and the position (b) in FIG. 2 (a). The acceleration of is measured, and the color corresponding to the acceleration is displayed (plot) on the acceleration display 3. Therefore, in the case of the display of FIG. 2B, the ball end mill 1 is displayed at the position (b) of the workpiece 2. It can be understood by visualizing in real time that "chatter" is generated in the cutting edge 1a of the above. In the example of FIG. 2B, the acceleration at the position in the XZ direction is visualized. It is also possible to display the acceleration at the position in the XY direction and the position in the YZ direction, or to display these at the same time.

Next, in FIG. 3, (a) shows a screen example in which the acceleration and temperature when the actual workpiece 2 is cut by the ball end mill 1 with this real-time machining state display device are measured and displayed in real time. , (B) show a plan view photograph of an example of the workpiece 2 actually being machined. In this cutting example, as shown in FIG. 2B, the workpiece 2 which is a stainless steel thick plate is cut into a concave star shape. In the screen example of FIG. 3A, the translational acceleration (ACC X) in the X direction, the rotational acceleration around the axis (ACC R), and the temperature (TEMP) of the cutting edge 1a of the ball end mill 1 are shown in order from the left side in the upper row. The measured values at the time of this display are 4.780 (mm / S2), 447.609 (rθ / S2), and 6689.640 (C °), respectively. In the middle row, from the left side, the vertical axis is the X direction and the horizontal axis is the Y direction. Front view showing translational acceleration, rotational acceleration and temperature on the machining path, and side view showing translational acceleration, rotational acceleration and temperature on the machining path with the vertical axis in the Y direction and the horizontal axis in the Z direction, respectively. The tab 5 (time Chart, ACC X, ACC-R, Temperature) is switched to display the time chart (see FIG. 2A), translational acceleration, rotational acceleration and temperature. Further, the lower part shows a look-up table 4 (see the look-up table 4 in FIG. 2B) plotted as actual measurement values of acceleration and temperature on the machining path. In FIG. 3 (a), it is mapped and visualized that the acceleration is large especially at the contour / corner in the machining path of the star-shaped ball end mill machining, and “chatter”, as a result, the machining accuracy is lowered and the tool is It can be seen that the signs of damage are revealed in real time along with the position.

Further, although not shown in FIG. 3, the time chart shown in FIG. 2 (a) is displayed as shown in the time chart at the right end of the tab 5, and the translational acceleration, the rotational acceleration, and the change over time of the temperature are displayed on the same time axis. It can also be displayed.

≪Real-time display of changes in machining tools≫
Next, a specific processing flow example in the real-time processing status display device will be described.
FIG. 4 shows an example of processing flow example 1 in which changes in the state of a cutting tool (cutting blade, etc.) 1a are displayed by monitoring changes in temperature, acceleration, and force for each processing of a processing tool 1 such as a ball end mill. ing. When the processing of the machine tool starts and the processing of this real-time processing status display device starts (ST1), the measuring means arranged in the tool holder of the machine tool or the like starts the temperature, acceleration, and force (stress) of the cutting tool 1a in real time. Read (ST2). Specifically, from the temperature data detected from the thermocouple etc. provided inside the tip of the blade 1a, the acceleration data (translational acceleration and rotational acceleration) detected from the acceleration sensor arranged in the tool holder, etc., the strain gauge, etc. Read the detected stress data.

When the temperature data, acceleration data, and stress data of the machining tool 2 are read (ST2), the initial state of the cutting tool 1a (at the start of machining) is detected, or the previous machining stored in this real-time machining status display device is performed. The state of time and the amount of change of the cutting tool 1a this time are calculated (ST3). Although not shown in FIG. 4, at this time, it is determined whether or not the blade 1a is suitable for machining from the initial state of the blade 1a and the amount of change from the previous machining (based on a predetermined threshold value or the like set in advance), which is inappropriate. If it is determined that, a warning or processing stop can be given. When the machining starts, the amount of change in temperature, acceleration, and stress of the cutting tool 1a being read, which is read, is displayed (ST4). Then, when the measurement of the amount of change is completed, the processing is completed (ST5 to ST6).

≪Same time axis display of measurement data of machining tools and machine tools≫
FIG. 5 shows an example of processing flow example 2, in which data such as a servomotor, an acceleration pickup, a power meter, and a displacement meter are synchronously collected and plotted together with the temperature of the blade and the acceleration / force of the holder. The machine tool and its peripherals may be able to read measurement data other than temperature, acceleration, and stress read in processing flow example 1. For example, a servomotor for driving a machining tool 1, an acceleration pickup (vibration pickup) as a sensor that detects vibration and converts it into an electric signal, and a power meter that measures power such as rotational torque from input / output data of a machine tool. It is a displacement meter that measures the amount of movement of the blade 1a or the spindle. By assistingly utilizing these measurement data, the accuracy of abnormality detection of the processing tool 1 can be improved.

Specifically, when the processing is started in the same manner as in the above processing flow example 1 (ST1), the temperature, acceleration, and force (stress) of the cutting tool 1a are read in real time (ST2). When the temperature data, acceleration data, and stress data of the processing tool 2 are read (ST2), the data from the servomotor, acceleration pickup, power meter, and displacement meter are read (ST7). A type chart (tab 5 of FIG. 2 (b)) showing changes over time in the read temperature / acceleration / stress data and data from the servomotor / acceleration pickup / power meter / displacement meter on the same time axis. time Chart)) is displayed in real time (ST8). Then, when the measurement of the amount of change is completed, the processing is completed (ST5 to ST6). According to this processing flow example 2, in addition to the measurement data of the temperature, acceleration, and stress of the machining tool 2, the measurement data of the machine tool such as the servo motor, the acceleration pickup, the power meter, and the displacement meter are displayed on the time chart on the same time axis (FIG. 2 (Fig. 2). The accuracy of machining abnormality detection can be further improved by displaying in real time at a) and the left end of tab 5 (time Chart) in FIG. 3)).

≪Visible real-time display of abnormal occurrence≫
FIG. 6 shows an example of mapping and visualizing the temperature, acceleration, and stress of the cutting tool 1a of the processing tool 1 as a processing flow example 3. According to this processing flow example 3, it is possible to visually convey to an operator such as a beginner technician a part where an abnormality such as overheating or chatter is likely to occur or a part where an abnormality actually occurs.

Specifically, when the processing is started in the same manner as in the processing flow examples 1 and 2 (ST1), the temperature, acceleration, and force (stress) of the cutting tool 1a are read in real time (ST2). The read temperature / acceleration / stress data is converted into a predetermined color according to each value. Although omitted in FIG. 6, the colors set according to the respective values of temperature, acceleration, and stress are preferably displayed on the look-up table 4 or the like as shown in FIGS. 2 to 3. Next, it communicates with the NC program of the machine tool and reads the position coordinates (X, Y, Z coordinates) of the current machining point in the machining tool 1 from the CNC variable (ST10). Further, the color set in ST9 in each measured value of temperature, acceleration, and stress is in the coordinate plane on the display corresponding to the position coordinates of the processing point read in ST10 (see windows 6, 7, and 8 in FIG. 3). ) Is displayed (plotted) in the pixel (pixel) or the pixel (voxel) in the coordinate space (XYZ coordinate space) of the three-dimensional window, and is mapped in real time over the entire area being processed (ST11). Then, when the measurement of the amount of change is completed, the processing is completed (ST5 to ST6). By this processing flow example 3, the frequency of defective products of the processing tool 1 is reduced, the processing dimension accuracy of the workpiece 2 is improved, the quality of the processed surface is improved, the work efficiency is improved, and the sense of the expert is quantitatively obtained. Understanding and learning, even experts can gain new knowledge.

≪Quantitative evaluation of changes / deterioration / abnormalities of equipment / parts over time≫
In FIG. 7, as a processing flow example 4, the temperature, acceleration, force, and position information to be machined in a preset trajectory (machining path) using a cutting tool 1a for evaluation and a tool holder as a fixed point observation of the state of the machine tool are shown. Is shown on a regular basis and the results are compared to quantitatively evaluate changes over time, deterioration, abnormalities, etc. of machine tools and parts. According to this processing flow example 4, when the same product is repeatedly machined, the machine tool / part can be visually compared and evaluated with the machining state up to that point, so that the frequency of defective products is reduced, the dimensional accuracy is improved, and the machining is performed. The quality of the surface can be improved.

FIG. 7A shows an example of a processing flow for creating reference data by preserving (including updating) the temperature, acceleration, and stress on the machining path of the reference blade 1a and the machine tool (and its tool holder). ing. Further, FIG. 7 (b) compares the temperature / acceleration / stress / coordinate data on each machining path of the same machine tool after a predetermined period with the reference data saved / created in (a) and is visible. An example of the processing flow to be displayed is shown.

Specifically, in FIG. 7A, when the processing is started in the same manner as in the processing flow examples 1 to 3 (ST1), the temperature, acceleration, and force (stress) of the cutting tool 1a are read in real time (ST2). The read temperature / acceleration / stress measurement data reads the position coordinates (XYZ coordinates) of the current machining point from the CNC of the machine tool (ST10). The measurement data of temperature, acceleration, and stress read from ST2 and ST10 and the position coordinate data of the corresponding machining point are saved, and if it is the time of replacement of the machining tool or the time of operation of the machine tool, it is used as the reference data as the initial time. Is created (ST12). This reference data is stored in, for example, a dedicated server or a cloud server, the reference data is stored, and the process ends when the measurement is completed (ST5 to ST6). Further, after the reference data is created, the data is sequentially and periodically periodically stored each time the process of FIG. 7A is performed, and this is saved as comparison data. It is also possible to use the comparison data saved so far as the reference data at the time of the previous measurement and set the current data as the comparison data.

Next, in FIG. 7 (b), when the process starts in the same manner as in (a) (ST1), the reference data at the initial time saved / created in (a) is read / set (ST13). Similarly, the comparison data saved / created periodically is read / set (ST14). Next, the reference data set in ST13 to ST14 and the comparison data are compared, and the difference in temperature, acceleration, and stress at each coordinate position is calculated (ST15). Then, as shown in ST11 of FIG. 6, the calculated difference in temperature, acceleration, and stress at each coordinate position is the pixel in the coordinate plane on the display corresponding to the position coordinate of the processing point, or the coordinate space of the three-dimensional window. It is displayed on the inner pixel (ST16), and when the display is completed, the process is completed (ST6). According to this processing flow example 4, it is possible to quantitatively evaluate changes over time, deterioration, abnormalities, etc. of machining tools, machine tools and their parts, reduce the frequency of defective products, improve machining dimensional accuracy, and work. It is possible to improve the quality of the machined surface of an object.

1 ... Machining tool 2 ... Work piece 3 ... Acceleration display 4 ... Look-up table 5 ... Tabs 6-8 ... Window

Claims (8)

It is a real-time machining status display device that maps the status on the machining path of the machining tool at the tip of the machine tool.
A measuring means that monitors at least one or more physical quantity data of the temperature, acceleration, or stress of the machining tool in chronological order.
A position acquisition means that reads the time-series coordinates of the machining tool in operation from the time information and position information of the machine tool motion control means (CNC).
Based on the time-series physical quantity data from the measuring means and the time-series coordinate data from the position acquisition means, the physical quantity data at the coordinates on the machining path is converted into visualization data and displayed at the position on the machining path. A real-time machining status display device having a mapping means to be performed.
The mapping means according to claim 1, wherein the mapping means converts the physical quantity data into a color designation value set in advance corresponding to a predetermined numerical value of the physical quantity data, and displays the color designation value on a pixel corresponding to the coordinate data. Real-time machining status display device.
The measuring means has a thermocouple inserted in the processing tool and a temperature measuring unit that outputs information from the thermocouple as temperature data.
The time-series coordinate data from the position acquisition means is coordinate data in the three-dimensional XYZ direction, and the mapping means displays temperature data in the XY plane, the XY plane, and the YZ plane based on the coordinate data. The real-time processing state display device according to claim 1 or 2.
The measuring means has an acceleration sensor arranged in a machine tool or a tool holder held by the machine tool, and an acceleration measuring unit that outputs information from the acceleration sensor as acceleration data.
The time-series coordinate data from the position acquisition means is coordinate data in the three-dimensional XYZ direction, and the mapping means displays temperature data in the XY plane, the XY plane, and the YZ plane based on the coordinate data. The real-time processing state display device according to claim 1 or 2.
The machine tool is a rotation tool that rotates the processing tool to process the work, and the acceleration sensors are arranged at positions symmetrical with respect to the center of the rotation axis of the rotation tool on a horizontal plane in the tool holder. The real-time processing state display device according to claim 4, further comprising a pair of accelerometers and a pair of accelerometers arranged at positions having a phase different from each other by approximately 90 °.
The mapping means displays temperature data or acceleration data in the XY plane in the XY plane display window, displays temperature data or acceleration data in the XZ plane in the XZ plane display window, and displays temperature data or acceleration data in the YZ plane. 3 to 5 according to claim 3, wherein the Real-time machining status display device.
It is a real-time machining status display device that maps the status on the machining path of the machining tool at the tip of the machine tool.
Measuring means for monitoring the physical quantity data of one or more of the temperature, acceleration or stress of the machining tool and the measurement data of the machine tool from the measuring means provided in the machine tool for measuring the operating state of the machine tool, and the measuring means for monitoring the measurement data of the machine tool in chronological order.
A real-time machining state display device that displays time-series physical quantity data from the measuring means, measurement data from the machine tool, or changes over time of both data on the same time axis.
It is a real-time machining status display device that displays the state change on the machining path of the machining tool at the tip of the machine tool.
The physical quantity data of one or more of the temperature, acceleration or stress of the machining tool at the reference time is measured and saved, and the time series coordinates of the machining tool in operation are obtained from the time information and position information of the motion control means of the machine tool. The reference data creation method for creating the read reference data,
The physical quantity data measured and saved by the reference data creation means at the time when a predetermined time elapses from the reference time is measured and saved, and the time-series coordinates of the machining tool in operation from the time information and position information of the operation control means of the machine tool. A comparison data creation method that creates comparison data by reading
A comparison calculation means for calculating the difference in physical quantity data at the time-series coordinates of the machining tool read from the reference data creation means and the comparison data creation means, and a comparison calculation means.
A real-time machining state display device having a display means for displaying the difference of physical quantity data calculated by the comparison calculation means at the coordinates on the machining path based on the coordinates of the time series of the machining tool.

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