JP6584488B2 - Machine tool control method and machine tool control apparatus - Google Patents

Description

  The present invention relates to a machine tool control method and a machine tool control apparatus.

  In the prior art, a machine tool that performs processing such as cutting by moving a tool relative to a workpiece is known. In such a machine tool, a numerically controlled machine tool is known in which a tool path is designated by coordinates of a predetermined feed axis and the like is performed while moving the tool relative to the workpiece. The machine tool can automatically perform machining while changing the relative position of the tool with respect to the workpiece by moving at least one of the workpiece and the tool in accordance with the operation command of the control device.

  In a numerically controlled machine tool, a machining program in which relative movement of the tool with respect to the workpiece is determined, information on the tool, and the like are input to the control device. The machine tool can automatically process the workpiece based on the information. The operator needs to set or confirm information related to machining such as a machining program. The machine tool is provided with a display unit that displays information related to machining. The operator can set tool information and check the progress of machining while looking at the display unit.

  Further, even a numerically controlled machine tool may be driven manually. For example, when exchanging a tool, there is a case where the workpiece or the tool is manually moved to move the spindle head to which the tool is fixed away from the workpiece. In this case, the operator drives the feed axis using the jog button or manual pulse generator while looking at the machine tool, or creates and executes the machining program on the spot using the manual data input (MDI) function. The machine tool can be driven manually.

  Japanese Patent No. 5391675 discloses a control device that divides a series of operations performed during automatic operation of a machine tool into individual operations and displays a work order in a three-dimensional shape model. This control device displays a menu for operating a part corresponding to the three-dimensional shape model. It is disclosed that when any of the displayed menus is selected, the control device performs an operation corresponding to the selected menu.

  Japanese Patent Laid-Open No. 2000-305614 discloses a control device that can generate manual pulses in software. The control device includes a touch panel on which an input operation unit for manual operation is displayed. A plurality of touch switches are displayed on the input operation unit, and the touch switch is traced with a finger so that continuous input operations can be performed. This control device is disclosed to give a movement command to a servo mechanism of a machine in accordance with an operation of an input operation unit.

Japanese Patent No. 5391675 JP 2000-305614 A

  In recent years, machine tool technology has advanced, and machine tools are provided with many functions. As machine tool functions increase, the operation of machine tools becomes complex and difficult. Even if the user knows the function and operation method of a single machine tool, the machine tool model may change or the manufacturer may change to a different machine tool. In these cases, it is necessary to acquire new functions and operation methods in order to use the machine tool.

  For example, feed axes such as an X axis and a Y axis are set in a machine tool. Positive and negative directions are set for each feed axis. When the workpiece or tool is moved manually, the workpiece or tool can be moved along a desired feed axis by pressing a jog button on the operation panel. At this time, the operator needs to select the feed shaft to be moved, and further select the positive side or the negative side. However, when the machine tool model changes, the operator may have difficulty in understanding the feed axis and the moving direction for performing the desired movement. If the feed axis to be selected or the moving direction is wrong, the machine tool may be driven in an unintended direction to cause a problem. For example, when the tool is separated from the workpiece, the tool may be driven in the opposite direction to the desired direction to cause the tool to collide with the workpiece. For this reason, the operator needs to operate the switches on the operation panel while referring to the instruction manual of the machine tool or the nameplate of the feed axis of the machine.

  Further, in a machine tool having a rotary feed shaft, there is a case where the machining surface of the workpiece is directed to the tool by rotational movement. In this case, a machining program for moving along the rotary feed axis is generated by the MDI function. However, in a machining program including a rotation operation, it is necessary to select a rotation feed shaft and set a rotation angle of the rotation feed shaft.

  Furthermore, the machine tool may be provided with auxiliary devices such as a tool changer and a coolant supply device. Even when such an auxiliary device is controlled, it is necessary to generate a machining program for driving the auxiliary device.

  It is necessary to describe the command code in the machining program. And it is necessary to set an argument in the command code. There are many types of command codes, and it is difficult to store all the command codes. It is necessary to generate a machining program only by directing the machining surface of a workpiece toward a tool or driving an auxiliary device, and an operator is required to have high knowledge and skill.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a machine tool control method and a machine tool control apparatus that are easy to operate a machine tool and suppress erroneous operations by an operator.

In the machine tool control method of the present invention, a machining program is processed by a reading interpretation unit, an interpolation calculation unit, and a servo control unit to drive a servo motor of a feed axis, thereby relatively moving a tool and a workpiece. To work the workpiece. The machine tool image is displayed on the touch panel display, the machine tool operation corresponding to the operator's operation on the machine tool image is stored in advance, and the operator's operation content on the machine tool image is acquired and operated. An operation command for operating the machine tool corresponding to the contents is generated, and the machine tool is operated based on the operation command. When performing manual operation of the machine tool, an image of the feed axis portion of the machine tool is displayed on the display unit, and when the operator moves the image with a finger to the button area of the same screen, the actual machine tool displays the image of the image. The direct mode button that is driven and the actual machine tool are stopped, but the selected image part moves and the moving state including the feed axis and the moving amount is memorized, and all the desired movements on the screen are performed. A normal mode button for carrying out the stored movement at one time after completion is displayed. Further, a linear motion axis button and a rotational axis button for selecting whether the feed axis is a linear motion axis or a rotational axis are displayed. If the operator has the the direct mode button, the linear motion shaft button or select said rotary shaft button to move while maintaining the state of selecting a portion of the image of the machine tool by an operator, machine tool Control is performed to detect a feed axis and a movement amount corresponding to a movement direction in an image of the machine, generate a movement program including an operation command based on the movement amount of the feed axis, and send the movement program to a reading interpretation unit.

  Another machine tool control method of the present invention is a machine tool control method for machining a workpiece by relatively moving a tool and a workpiece, and displaying an image of the machine tool on a display unit. The machine tool operation corresponding to the operator's operation on the image is stored in advance, the operator's operation content for the machine tool image is acquired, and an operation command for operating the machine tool in response to the operation content is generated. The machine tool is operated based on the operation command.

  In the said invention, the image of the machine tool displayed on a display part can be a three-dimensional image.

  In the above invention, an image in which the workpiece is arranged on the table of the machine tool is displayed on the display unit, and the operation content is an operation in which one surface of the workpiece is selected as the designated surface by the operator, and the designated surface is determined in advance. It is possible to calculate the rotation angle of the rotary feed shaft to be directed in the specified direction and generate an operation command for rotating the rotary feed shaft based on the rotation angle.

  In the above invention, when the operator moves a part of the image of the machine tool while maintaining the selected state, the feed axis and the movement amount corresponding to the moving direction in the image of the machine tool are set, and An operation command can be generated based on the movement amount.

  In the above invention, the image of the auxiliary device of the machine tool is displayed on the display unit, the operation content is an operation on the image of the auxiliary device, and the operation command is a command to operate the auxiliary device, and based on the operation command An auxiliary device can be operated.

The machine tool control device according to the present invention moves a tool and a workpiece relatively by driving a servo motor of a feed axis by processing a machining program in a reading interpretation unit, an interpolation calculation unit, and a servo control unit. To work the workpiece. The control device is a touch panel type display unit that displays an image of the machine tool, a storage unit that stores information related to machining of the machine tool, and an image of the machine tool that is displayed on the display unit. And an information control unit that acquires the operation content of the operator. The storage unit stores the operation of the machine tool corresponding to the operator's operation on the image of the machine tool. The information control unit generates an operation command for operating the machine tool corresponding to the operation content. The control device operates the machine tool based on the operation command. When performing manual operation of the machine tool, an image of the feed axis portion of the machine tool is displayed on the display unit, and when the operator moves the image with a finger to the button area of the same screen, the actual machine tool displays the image of the image. The direct mode button that is driven and the actual machine tool are stopped, but the selected image part moves and the moving state including the feed axis and the moving amount is memorized, and all the desired movements on the screen are performed. A normal mode button for carrying out the stored movement at one time after completion is displayed. Further, a linear motion axis button and a rotational axis button for selecting whether the feed axis is a linear motion axis or a rotational axis are displayed. If the operator has the the direct mode button, the linear motion shaft button or select said rotary shaft button to move while maintaining the state of selecting a portion of the image of the machine tool by an operator, information control unit detects the feed axis and the movement amount corresponding to the movement direction of the machine tool of the image, the control is sent to generate and read interpreting unit movement program including an operation command based on the amount of movement of the feed shaft carry out.

  Another machine tool control device according to the present invention is a machine tool control device that processes a workpiece by relatively moving a tool and a workpiece, and includes a display unit that displays an image of the machine tool, A storage unit that stores information related to machining, and an information control unit that controls an image of the machine tool displayed on the display unit and acquires an operation content of the operator with respect to the image of the machine tool. The storage unit stores the operation of the machine tool corresponding to the operator's operation on the image of the machine tool. The information control unit generates an operation command for operating the machine tool corresponding to the operation content. The control device operates the machine tool based on the operation command.

  According to the present invention, the operation of the machine tool can be intuitively and easily performed instead of the operation using the conventional jog button or the manual pulse generator, and the operator's erroneous operation can be suppressed. It is possible to provide a machine tool control method and a machine tool control apparatus which are configured as described above.

It is a block diagram of a machine tool. It is a schematic perspective view of a machine tool. It is a schematic front view of the operating panel of a machine tool. It is explanatory drawing which calibrates the position of a workpiece | work. It is a schematic perspective view of the workpiece | work and touch probe explaining the method to measure the position of a workpiece | work. It is a flowchart which calibrates the position of a workpiece | work. It is the 1st manual operation screen displayed on the display panel of an operation panel. It is a 2nd manual operation screen displayed on the display panel of an operation panel. It is a 3rd manual operation screen displayed on the display panel of an operation panel. It is a flowchart of the control which drives a machine tool according to operation of the image of a machine tool. It is a 4th manual operation screen displayed on the display panel of an operation panel. It is a 5th manual operation screen displayed on the display panel of an operation panel. It is the 6th manual operation screen displayed on the display panel of an operation panel. It is a 7th manual operation screen displayed on the display panel of an operation panel. It is a flowchart of control which starts or stops an auxiliary device according to operation of the image of an auxiliary device. It is the 1st program edit screen displayed on the display panel of an operation panel. It is a flowchart of the 1st control of a program edit screen. It is the 2nd program edit screen displayed on the display panel of an operation panel. It is a flowchart of the 2nd control of a program edit screen. It is a diagnostic screen displayed on the display panel of an operation panel. It is a flowchart of control which displays abnormality of a machine tool on an image.

  A machine tool control method and a machine tool control apparatus according to an embodiment will be described with reference to FIGS. The machine tool of the present embodiment is a numerical control type that performs machining by automatically moving a tool and a workpiece relative to each other based on a machining program.

  FIG. 1 shows a block diagram of a machine tool in the present embodiment. The machine tool 1 includes a control device 70. The control device 70 includes, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like connected to each other via a bus. The control device 70 includes an input unit 71, a reading interpretation unit 72, an interpolation calculation unit 73, and a servo control unit 74. When machining with the machine tool 1, a machining program 76 is prepared in advance. The machining program 76 can be created by a CAM (Computer Aided Manufacturing) device 77 or the like based on the target shape of the workpiece. The target shape of the workpiece can be created by, for example, a CAD (Computer Aided Design) apparatus.

  A machining program 76 is input to the input unit 71. The machining program 76 includes information on relative movement of the tool with respect to the workpiece and information on control of the auxiliary device. In the machining program 76, for example, an operation command for the machine tool is described by a command code such as a G code or an M code. In the information control unit 20, a machining program newly created by the operator may be input to the input unit 71.

  The reading interpretation unit 72 reads the machining program 76 from the input unit 71. The reading interpretation unit 72 sends a movement command to the interpolation calculation unit 73. The interpolation calculation unit 73 calculates a position command value for each interpolation cycle. For example, the interpolation calculation unit 73 calculates a movement amount for each time interval set based on the movement command. The interpolation calculation unit 73 sends the position command value to the servo control unit 74. The servo control unit 74 drives the servo motor 75 of each feed axis such as the X axis, the Y axis, the Z axis, and the A axis based on the position command value.

  The control device 70 includes an information control unit 20 that controls machining information related to machining of a workpiece, an operation unit 30 in which an operator inputs machining information and the like, and a display unit 28 that displays machining information. The information control unit 20 includes an arithmetic processing unit 25 that calculates or determines a predetermined variable based on the machining information.

  The information control unit 20 includes a program creation unit 21. The program creation unit 21 can create a numerical control program. The program creation unit 21 newly creates a machining program or reads the machining program 76 from the input unit 71 and then edits the machining program. The program creation unit 21 creates a movement program for driving the moving device and auxiliary device for each feed axis, a measurement program for measuring a workpiece, and the like based on the operation of the operator's screen as will be described later. Can do. The information control unit 20 includes a display control unit 22 that controls an image displayed on the display unit 28.

  The operation unit 30 includes a keyboard and the like, and includes a manual input unit 29 for inputting processing information by manual operation by an operator. The operation unit 30 according to the present embodiment includes a display unit 28. The display unit 28 employs a touch panel system capable of selecting a desired portion by touching the screen. The operator can input the processing information by manipulating the image displayed on the display unit 28. The operation unit 30 is not limited to this form, and any device that allows an operator to input machining information can be employed.

  The control device 70 includes a storage unit 26 that stores machining information. The storage unit 26 may be a storage device such as a memory card or a hard disk connected via a communication interface in addition to the above-described ROM and RAM. The information control unit 20 stores the processing information in the storage unit 26 and reads the processing information stored in the storage unit 26.

  The control device 70 includes an operation state detection device 36 that detects an operation state of the machine tool. As the operation state detection device 36, a sensor attached to the machine tool 1 can be exemplified. Examples of the various sensors include a sensor that detects the rotational speed attached to each axis servo motor 75, a sensor that detects the load on the main shaft, and a sensor that detects the operating state of the auxiliary device. The arithmetic processing unit 25 can receive a signal from the driving state detection device 36 and determine whether or not the driving state is abnormal. For example, the arithmetic processing unit 25 can acquire the spindle load from the driving state detection device 36 and determine that the load is abnormal when the spindle load is larger than the determination value.

  The control device 70 includes a position detection device 34 that detects the position of each feed shaft. The position detection device 34 includes, for example, a linear encoder and a rotary encoder. The position detector 34 detects the coordinate value of each feed axis. The arithmetic processing unit 25 acquires the coordinate value of each feed axis from the position detection device 34.

  The control device 70 includes a workpiece measuring device 35 that measures the shape of the workpiece before machining or the shape of the workpiece after machining. The workpiece measuring device 35 includes, for example, the touch probe 19. The arithmetic processing unit 25 detects that the touch probe 19 has touched the workpiece W when it has moved. For example, the arithmetic processing unit 25 can calculate the dimension of the workpiece W by acquiring the coordinate value when the touch probe 19 comes into contact with the workpiece W.

  The machine tool 1 includes an auxiliary device 33 that assists in machining a workpiece. As the auxiliary device 33, a tool changer that automatically changes a tool, a workpiece changer that automatically changes a workpiece, a coolant supply device that supplies a coolant to a machining part of the workpiece, and transports chips generated during cutting A chip conveyor or the like can be exemplified.

  The information control unit 20 includes an operation command generation unit 27 that sends out an operation command for driving the auxiliary device 33. The control device 70 includes an auxiliary device control unit 32 including a drive circuit that drives the auxiliary device 33. The auxiliary device control unit 32 operates the auxiliary device 33 based on the operation command from the reading interpretation unit 72 or the operation command generation unit 27.

  FIG. 2 shows a schematic perspective view of the machine tool in the present embodiment. The machine tool 1 is a table turning type in which a work is turned together with a table 16. The machine tool 1 has an X axis, a Y axis, and a Z axis that are orthogonal to each other. Further, in the machine tool 1, an A axis is set as a rotation feed axis around an axis extending in parallel with the X axis. In the machine tool 1, a C-axis is set as a rotation feed axis around an axis extending in parallel with the Z-axis.

  The machine tool 1 includes a bed 11 serving as a base and a column 12 erected on the upper surface of the bed 11. The machine tool 1 includes a spindle head 14 that rotatably supports the spindle 13 and a saddle 15 that supports the spindle head 14 in front of the column 12. The spindle head 14 supports the spindle 13 downward so that the tip of the spindle 13 faces the table 16. A tool is attached to the tip of the main shaft 13.

  The machine tool 1 includes a table 16 on which a workpiece is placed, and a U-shaped swing support member 18 that supports the table 16. The machine tool 1 includes a U-shaped carriage 17 that supports a swing support member 18. The carriage 17 supports the swing support member 18 with a pair of support posts spaced apart in the X-axis direction. The swing support member 18 is supported so as to be swingable about the axis of the A axis.

  The machine tool 1 includes a moving device that moves the tool relative to the workpiece based on the respective feed axes. The moving device includes each axis servo motor 75 driven along each feed axis. The moving device moves the saddle 15 with respect to the column 12 in the Y-axis direction. The moving device moves the carriage 17 in the X-axis direction with respect to the bed 11. In the column 12, a cavity 12c is formed so that the carriage 17 can partially enter. The moving device moves the spindle head 14 in the Z-axis direction with respect to the saddle 15. The moving device rotates the table 16 around the axis of the C axis. Further, the moving device rotates the swing support member 18 around the axis of the A axis with respect to the carriage 17. As described above, the machine tool 1 according to the present embodiment has three linear motion axes, that is, an X axis, a Y axis, and a Z axis, which are orthogonal to each other, and two rotating feed axes, which are an A axis and a C axis. The machine tool may have other forms. For example, the machine tool may be a spindle turning type having an A axis and a C axis on the spindle side. Further, the machine tool may be a mixed type having a C-axis on the table side and an A-axis on the main shaft side, even if the main shaft has a horizontal shape, or does not have a rotary feed shaft. I do not care.

  FIG. 3 shows a schematic front view of the operation panel arranged in the control device of the machine tool. Referring to FIGS. 1 and 3, operation panel 41 includes a manual input unit 29 and a display unit 28 of control device 70. The operation panel 41 includes a display panel 45 as the display unit 28. The display panel 45 of the present embodiment is a touch panel system. The display panel 45 also functions as the operation unit 30. As an apparatus for designating an arbitrary position on the screen, a pointing device such as a mouse, a joystick, or a touch pad may be employed instead of the touch panel type display unit.

  The operation panel 41 includes a keyboard unit 42. By pressing a key switch of the keyboard unit 42, a predetermined number or character can be input. The operation panel 41 includes an operation switch unit 44 that selects a predetermined operation. The operation panel 41 includes jog buttons 46a and 46b for manually driving the machine tool in the positive direction or the negative direction, and an override setting unit 43 for setting an override value. In addition, the operation panel 41 includes buttons such as an emergency stop button 48 that immediately stops when the machine tool is abnormal and an execution button 47 that starts driving the machine tool.

  A manual pulse generator 40 is connected to the operation panel 41. The manual pulse generator 40 is formed in a small size so that it can be operated while being held by an operator. The manual pulse generator 40 is provided with an axis selection button 40b for selecting a feed axis to be driven and a dial 40a for adjusting a pulse generation amount.

  The keyboard unit 42, the operation switch unit 44, the override setting unit 43, and various buttons arranged on the operation panel 41 function as the manual input unit 29 of the operation unit 30. The manual pulse generator 40 also functions as the manual input unit 29 of the operation unit 30.

  When operating the machine tool, the operator selects the operation mode of the machine tool. In the operation switch unit 44, operation mode selection buttons 49a to 49d for selecting an operation mode of the machine tool are arranged. The operator sets the type of work in the machine tool as the operation mode. The operation mode of the machine tool can be switched by pressing desired operation mode selection buttons 49a to 49d.

  For example, when editing a machining program, the machine tool is set to the edit mode by pressing the operation mode selection button 49a. When the machine tool is driven based on the machining program, the machine tool is set to the execution mode by pressing the operation mode selection button 49b. When the machine tool is moved manually, the machine tool is set to the manual operation mode by pressing the operation mode selection button 49c.

  The machine tool control device 70 according to the present embodiment can display a three-dimensional image of the machine tool on the display panel 45. That is, a three-dimensional image can be displayed on the display panel 45. The image of the machine tool includes an image of the auxiliary device 33 in addition to the workpiece and the tool. Here, preparation work for displaying a three-dimensional image on the display panel 45 will be described.

  With reference to FIG. 1, model data 39 for displaying a three-dimensional image is input to the information control unit 20. The model data 39 can be generated from a solid model. The model data 39 includes model data relating to the shape of the machine tool. In addition to information on the main body of the machine tool 1 including the table 16 and the spindle head 14, information on the auxiliary device 33 such as a tool changer can be included in the model data of the machine tool. The machine tool model data can be previously input to the information control unit 20 by the manufacturer of the machine tool and stored in the storage unit 26.

  Next, the model data 39 includes model data relating to the shape of the workpiece. The workpiece model data includes workpiece model data before machining. That is, material model data is included. The workpiece model data includes workpiece model data after machining. The workpiece model data can be generated by a CAD device or a CAM device 77, for example. The model data of the workpiece includes information on the position arranged on the table 16 of the machine tool 1 in addition to information on the shape of the workpiece. When the information on the position of the workpiece in the table 16 is not included, the workpiece is set to be arranged at the center of the table 16. Also, the workpiece model data can include the workpiece attachment model data.

  Further, the model data 39 includes model data related to the shape of the tool. As the model data of the tool, model data supplied by the tool manufacturer can be used. The workpiece model data and tool model data can be input to the information control unit 20 by an operator and stored in the storage unit 26.

  In the control device 70 of the present embodiment, a part of the machine tool 1 can be designated by an image of the machine tool displayed on the display unit 28 as described later. The display control unit 22 detects the pressed position of the display panel 45 and specifies the part of the machine tool selected by the operator based on the pressed position. For example, the table 16 can be selected by pressing the image of the table 16 of the machine tool 1 with a finger.

  However, since an operator processes various workpieces, the relationship between the position of the workpiece displayed on the display unit 28 and the actual workpiece position may deviate. For this reason, it is necessary to calibrate the position of the workpiece on the table 16 before machining the workpiece. Here, the calibration of the position of the workpiece on the table 16 will be described.

  FIG. 4 is a schematic perspective view for explaining the calibration of the position of the workpiece on the table. The position of the workpiece W before calibration is indicated by a one-dot chain line. The position of the workpiece W after calibration is indicated by a solid line. In addition, a workpiece coordinate G54 stored in the machine tool based on the workpiece model data is shown. Before calibration, the reference point 301 of the workpiece W is displaced from the origin position of the workpiece coordinates G54. For this purpose, calibration is performed so that the reference point 301 of the workpiece W overlaps the origin of the workpiece coordinates G54, as indicated by the arrow 201. In the present embodiment, the actual workpiece W arranged on the table 16 is moved.

  FIG. 5 is a schematic perspective view for explaining the measurement for calibrating the position of the work placed on the table. In order to detect the position of the actual work placed on the table, the position of the reference point 301 is calculated. The position detection device 34 according to the present embodiment includes a touch probe 19. In this example, a rectangular parallelepiped work W before processing is arranged on the table 16.

  With reference to FIG. 1, FIG. 4, and FIG. Then, as indicated by an arrow 202, the tip of the touch probe 19 is brought into contact with a plurality of measurement points 302. The arithmetic processing unit 25 of the information control unit 20 detects the coordinate value at this time. That is, the arithmetic processing unit 25 detects the coordinate values of the plurality of measurement points 302.

  The arithmetic processing unit 25 calculates the coordinate value of the reference point 301 of the workpiece W using the coordinate values of the plurality of measurement points 302. Then, the arithmetic processing unit 25 calculates a deviation amount between the reference point 301 and the origin of the work coordinates G54. The operator can adjust the position of the workpiece W on the table 16 as indicated by an arrow 201 based on the calculated deviation amount. An operator can adjust using a dial gauge etc., for example. In this way, calibration that matches the position of the actual workpiece W with the position of the workpiece model data can be performed.

  The calibration of the work position is not limited to this form, and the work position on the table in the model data may be calibrated. For example, in the example shown in FIG. 4, the position of the origin of the workpiece coordinates G54 may be moved based on the actual measurement result of the workpiece.

  FIG. 6 shows a flowchart for calibrating the position of the workpiece in the present embodiment. Referring to FIGS. 1 and 6, in step 131, operation processing unit 25 reads model data 39. In this state, the position of the work on the table in the model data is shifted from the position of the work placed on the actual table.

  In step 132, the display control unit 22 displays a three-dimensional image on the display unit 28 based on the model data.

  FIG. 7 shows an image displayed on the display unit when measuring a workpiece. In this screen, a first manual operation screen 60a as an auxiliary screen is displayed on the main screen. The manual operation screen 60a is a screen for inputting operation of the machine tool or displaying the state of the machine tool when the machine tool is operated manually. A screen displayed by pressing the selection units 51a to 51e is a screen that is frequently used in actual processing, and is referred to as a main screen in the present embodiment.

  The program editing screen can be displayed by pressing the program editing selection unit 51a among the selection units 51a to 51e. The program edit screen is a screen for creating and displaying a machining program for machining a workpiece. By pressing the tool information selection unit 51b, a tool information screen for inputting, displaying, and editing information about the tool can be displayed. By pressing the coordinate information selection unit 51c, a coordinate information screen for inputting, displaying, and editing coordinate information can be displayed. Further, when the selection unit 51d is pressed, a screen showing the state of the machine tool that is executing the program is displayed. By pressing the selection unit 51e, the measurement result of the workpiece after processing is displayed.

  Referring to FIG. 3, when the machine tool is driven manually, the operator presses the operation mode selection button 49c to set the operation mode of the machine tool to the manual operation mode. Referring to FIG. 7, the worker presses support screen button 65 to display a support screen. Then, the manual operation screen 60a is displayed by selecting the item of the manual operation screen from the support screen.

  Referring to FIG. 7, the manual operation screen 60a includes selection units 62a to 62c. The selection unit 62a is selected when the workpiece, tool, or auxiliary device is manually driven. The selection unit 62b selects when a predetermined surface is directed to the tool. The selection part 62c selects when measuring the coordinate value of the arbitrary points of a workpiece | work. In this example, the selection unit 62c is selected.

  In the manual operation screen 60a, the spindle head 14, the tool T, the table 16, and the workpiece W arranged on the table 16 are displayed as a three-dimensional image. The operator can designate a measurement point 302 for calibrating the position of the workpiece on the table in the three-dimensional image. As will be described later, the display control unit 22 of the present embodiment can enlarge or reduce a three-dimensional image. The display control unit 22 can move the three-dimensional image in a desired direction. For example, it is possible to change the display part by moving the image linearly or to change the display direction by rotating the image.

  Referring to FIGS. 1, 6, and 7, in step 133, the operator designates measurement point 302 in the three-dimensional image. The operator presses a button 61 a for designating a measurement point arranged in the button area 61. After this, the operator presses the measurement point 302 portion of the image with his / her finger to display the mark 99 of the measurement point 302. The display control unit 22 detects the position of the measurement point 302. The operator changes the direction of the three-dimensional image and designates all the measurement points 302.

  In step 134, the program creation unit 21 creates a measurement program. With reference to FIG. 5, the program creation unit 21 creates a measurement program in which the touch probe 19 moves with respect to a plurality of measurement points 302 as indicated by arrows 202. That is, a measurement program for moving the table 16 and the spindle head 14 is created so that the tip of the touch probe 19 contacts the measurement point 302.

  Next, in step 135, the workpiece is measured. That is, referring to FIG. 3, when the operator presses the execution button 47 of the operation panel 41, the measurement of the coordinates of the measurement point 302 is automatically started. Referring to FIGS. 1 and 5, information control unit 20 sends the created measurement program to reading interpretation unit 72. The spindle head 14 moves toward the workpiece W. The touch probe 19 gradually moves from a position away from the measurement surface toward the measurement point 302. And the workpiece | work measuring apparatus 35 detects that the front-end | tip of the touch probe 19 contacted the measurement surface of the workpiece | work. The arithmetic processing unit 25 detects a coordinate value when the tip of the touch probe 19 comes into contact. The coordinate value can be detected by the position detection device 34. For example, the machine coordinate value of each measurement point 302 can be detected.

  With reference to FIG. 6, next, in step 136, the arithmetic processing unit 25 calculates the coordinate value of the reference point 301 of the actual workpiece W based on the coordinate values of the plurality of measurement points 302. Further, the arithmetic processing unit 25 calculates a deviation amount between the actual position of the workpiece W and the position of the workpiece in the model data. Then, the display control unit 22 displays the coordinate value and deviation amount of the reference point 301 of the actual work W on the display unit 28.

  In step 137, the actual position of the workpiece W is adjusted to the position in the workpiece model data. In the present embodiment, the operator adjusts the position of the workpiece W on the actual table 16.

  In this way, the position of the workpiece can be calibrated. A three-dimensional image of the workpiece can be accurately displayed on the display unit. For example, when the operator designates a specific part of the image of the work, the control device can correctly recognize the designated part in the actual work.

  In the manual operation screen 60a, the workpiece dimensions can be measured in addition to the workpiece position calibration by the same operation as described above. For example, in order to acquire processing accuracy data, a probe can be brought into contact with a predetermined portion of the processed workpiece, and the dimension of the processed workpiece can be measured.

  FIG. 8 shows a second manual operation screen in the embodiment. When the machine tool is driven manually, the operator can display the auxiliary screen of the viewpoint switching button by pressing the display switching button 61b. On this auxiliary screen, it is possible to select from which viewpoint the displayed three-dimensional image of the machine tool is displayed. The operator selects a desired viewpoint from the auxiliary screen, and displays an image of the machine tool viewed from the viewpoint on the screen. Referring to FIG. 3, by pushing the jog button 46 a or the jog button 46 b of the operation panel 41, the image and the actual feed axis of the machine tool can be driven in a desired direction with respect to the selected feed axis. Alternatively, in the manual pulse generator 40, a desired feed axis is selected by the axis selection button 40b. Then, the selected feed shaft can be driven in a desired direction by turning the dial 40a.

  However, in such a method of manual operation, there is a case where it is unclear which feed axis corresponds to the direction in which the operator wants to operate. Or, it may be unclear whether the moving direction is the positive side or the negative side. In addition, in a large machine tool, in order to move a long distance, it is necessary to keep pressing the jog button for a long time or to continue to turn the dial for a long time.

  The control device 70 according to the present embodiment can manually drive the machine tool by an operator operating a three-dimensional image displayed on the display panel 45. The storage unit 26 stores in advance the operation of the machine tool corresponding to the operator's operation on the image of the machine tool. The control device 70 acquires the operation content of the operator with respect to the image of the machine tool, and generates an operation command for driving the machine tool corresponding to the operation content. The machine tool is driven based on the operation command.

  Referring to FIG. 8, in manual operation screen 60b, selection unit 62a is selected. When the display switching button 61b shown in the button area 61 is pressed, a list of parts to be displayed is displayed. Here, the table 16 and the spindle head 14 are displayed by selecting the table and the spindle head portion.

  First, a method for moving and rotating a three-dimensional image will be described. By moving a region in which no image of the machine tool is displayed with the finger 105a in a desired direction indicated by an arrow 203, the image is moved linearly within the screen, or the back side is displayed facing forward. It can be rotated. For example, when the screen is moved while touching the screen with two fingers, the image moves linearly, and when the screen is moved while touching the screen with one finger, the screen rotates.

  Furthermore, the displayed part can be enlarged by pushing the area | region where the image of a machine tool is not displayed with two fingers, and expanding the space | interval of fingers. In addition, the image can be reduced by narrowing the interval between two fingers. Since it is possible to enlarge, reduce, linearly move, and rotate a three-dimensional image, it is possible to make it easy to see a desired part of a machine tool or a workpiece. For example, when a recess is formed in the workpiece, the shape inside the recess can also be confirmed.

  The display control unit 22 recognizes the movement of the finger after pressing the display panel 45 with the finger, and moves or enlarges the image. As described above, the display panel 45 of the present embodiment can display a desired portion from a desired angle. The display unit can display a desired portion at a desired magnification.

  Next, the direct mode among the manual operation modes in which the machine tool is driven manually will be described. The direct mode is an operation mode in which an image is moved with a finger and an actual machine tool is driven according to the image. In the button area 61, the button 61c in the direct mode is pressed for selection. In this example, the carriage 17 is moved to the positive side of the X axis. The linear motion axis button 61e is selected. The carriage 17 is selected by pushing with the finger 105b. The finger 105b is moved in the direction indicated by the arrow 204 while keeping the carriage 17 pressed.

  FIG. 9 shows a third manual operation screen in the present embodiment. FIG. 9 is a manual operation screen 60 b after the carriage 17 is moved in the direction indicated by the arrow 204. The spindle head 14 does not move, but the carriage 17 moves. In an actual machine tool, the carriage 17 is moved to the positive side of the X axis. The actual moving amount of the machine tool at this time corresponds to the moving amount on the screen. That is, the larger the predetermined part is moved on the screen, the larger the corresponding part of the actual machine tool is moved. Note that the actual moving speed may correspond to the moving speed of the finger. Control that increases the actual moving speed as the moving speed of the finger increases may be performed.

  When rotating a predetermined part of the machine tool along the rotation feed axis, the button 61f of the rotation axis in the button area 61 is selected. Then, the part to be rotated can be rotated by moving with the finger and moving the finger in the direction of rotation while maintaining the pressed state with the finger. For example, by moving the finger in a desired rotation direction while pushing the swing support member 18, the swing support member 18 can be rotated in the A-axis direction in the image of the machine tool and the actual machine tool.

  Thus, in this embodiment, the portion displayed on the screen can be moved in the direction of the feed axis. By manipulating the three-dimensional image displayed on the display unit 28, the actual machine tool can be driven manually. Since the operator can drive the machine tool intuitively while viewing the three-dimensional image, the operator can easily drive the machine tool. Moreover, erroneous operation can be suppressed. For example, it is possible to prevent the workpiece or tool from moving in the opposite direction to the desired direction.

  FIG. 10 shows a flowchart of control when the machine tool is manually driven in the direct mode. Referring to FIGS. 1 and 10, in step 141, display control unit 22 displays a three-dimensional image on display unit 28. In step 142, the display control unit 22 acquires the operation content of the operator in the three-dimensional image. For example, the display control unit 22 acquires that a predetermined point of a three-dimensional image has been pressed. The display control unit 22 detects the part of the machine tool selected with the finger. Then, the display control unit 22 detects that the pressed portion moves in a predetermined direction at a predetermined time. The display control unit 22 detects the moving direction and moving distance of the pressed part. As the finger moving direction, the direction of rotational movement along a predetermined rotational feed axis or the direction of linear movement along a predetermined linear motion axis is detected.

  Next, in step 143, the display control unit 22 displays an image of the moving machine tool. The display control unit 22 moves the image displayed on the display unit 28 according to the movement of the finger. In step 144, the program creation unit 21 creates a movement program for moving the part selected with the finger. The arithmetic processing unit 25 calculates the movement amount in the corresponding feed axis direction based on the movement direction and movement amount of the finger. The movement amount is calculated so that the movement amount in the image corresponds to the actual movement amount of the machine tool. The program creation unit 21 creates a movement program based on the selected feed axis and the calculated movement amount. As described above, the program creation unit 21 creates a movement program for instantaneously moving a selected portion of the machine tool.

  In step 145, the information control unit 20 sends the moving program to the reading interpretation unit 72. Each axis servo motor 75 is driven by the servo control unit 74. As a result, the machine tool 1 moves the selected portion in the direction of the predetermined feed axis, similarly to the movement of the image displayed on the display unit 28. Instead of creating a movement program according to the operation of the operator's screen, the selection of the feed axis, the feed direction and the feed amount according to the operation of the operator's screen are changed to the axis selection button 40b and dial 40a of the manual pulse generator 40. May be converted into a signal in the direction of turning and a pulse generation amount signal and sent to the servo control unit 74.

  Next, in step 146, it is determined whether or not the operator's operation on the image has been completed. The arithmetic processing unit 25 determines whether or not the movement of the portion pressed on the display unit 28 has been completed. That is, it is determined whether or not the movement of the finger has stopped or the finger has left the screen. When the movement of the pressed portion on the display unit 28 continues, the process returns to step 142 to continue the movement of the image and the driving of the machine tool. When the movement of the pressed portion on the display unit 28 is finished, this control is finished. By repeating this control in a short time, the machine tool can be continuously driven according to the image. At this time, for safety, even if there is a large movement instruction by the operator's finger, the movement of the finger is limited so that the feed shaft moves by a predetermined movement amount, for example, 50 mm, for example. Can be added. In addition, the arithmetic processing unit 25 calculates whether the model data of the machine tool moving with each other, the model data of the tool, and the model data of the workpiece do not interfere with each other. When the interference occurs, the movement of the image on the screen is stopped and the feed axis of the machine tool is stopped. Since the interference check is performed in this way, even if the operator carelessly operates the image, the tool and the workpiece do not collide and the feed shaft does not exceed the stroke end.

  Next, the normal mode among the manual operation modes will be described. In the normal mode, the portion selected in the image is moved, and the movement state including the feed axis and the movement amount is stored in the storage unit 26. At this time, the machine tool is stopped. Then, after all desired movements on the screen are completed, the stored movements are performed at once.

  Referring to FIG. 8, here, a case where the spindle head 14 is moved to the positive side of the Z axis after the carriage 17 has been moved to the positive side of the X axis is illustrated. When the normal mode is performed, the normal mode button 61d is selected. Then, the finger 105b is moved to move the carriage 17 on the image. At this time, the carriage 17 moves in the image, but the carriage 17 is stopped in the actual machine tool. Next, the spindle head 14 is pushed with the finger 105b to move to the positive side of the Z axis. In the image, the spindle head 14 moves to the positive side of the Z axis, but the spindle head 14 of the actual machine tool is stopped. Next, by pressing the enter button 61i and pressing the execution button 47 of the operation panel 41, the selected part of the machine tool moves according to the order of movement in the image.

  With reference to FIG. 1, in the normal mode, the storage unit 26 stores the feed axis and the amount of movement of the part that moves. Or the memory | storage part 26 may memorize | store an operator's operation. When the worker presses the enter button 61i, the program creation unit 21 creates a movement program corresponding to the operation of the worker. When the operator presses the execution button 47, the information control unit 20 sends the movement program to the reading / interpretation unit 72, and each axis servo motor 75 is driven.

  As described above, in the present embodiment, when the operator moves a part of the image of the machine tool while maintaining a selected state, the feed axis and the movement amount corresponding to the movement direction in the image of the machine tool are set. . An operation command for the machine tool is generated based on the movement amount of the feed axis. In this embodiment, a moving program is created according to the operator's screen operation. Then, the machine tool can be driven in accordance with the image by driving the moving device of each feed shaft based on the moving program.

  Next, indexing control for directing one surface of a workpiece in a desired direction will be described. In the manual operation, a predetermined surface of the workpiece may be directed in a desired direction. For example, there is a case where a predetermined surface of a workpiece is directed to a tool and a hole is drilled on this surface. In this case, it is necessary to adjust the direction of the work by rotating the work in a predetermined direction. In the present embodiment, index control for adjusting the orientation of the workpiece so that a predetermined surface of the workpiece is perpendicular to the axis of the main shaft is exemplified.

  FIG. 11 shows a fourth manual operation screen in the present embodiment. In the third manual operation screen 60c, the index selection unit 62b is selected. In the manual operation screen 60c, an image in which the workpiece W before processing is arranged on the table 16 is displayed.

  By pressing the surface designation button 61g in the button area 61, the surface on which the workpiece W is to be indexed can be selected. The operator rotates or enlarges the image as necessary and presses a desired surface with a finger. In the present embodiment, the selected surface is referred to as a designated surface. The designated surface is emphasized so that it can be distinguished from other surfaces, for example. In the example shown in FIG. 11, the selected surface is hatched. Then, by pressing the execution button 47 on the operation panel 41, the specified surface can be indexed. The image displayed on the display unit 28 moves and the machine tool is driven. Here, the swing support member 18 rotates in the A-axis direction, and the table 16 further rotates in the C-axis direction.

  FIG. 12 shows a fifth manual operation screen after indexing. The manual operation screen 60c is a screen after the image displayed on the display panel 45 has moved. The table 16 is rotated 90 ° in the C-axis direction, and the swing support member 18 is rotated 90 ° in the A-axis direction. The specified surface is perpendicular to the axis of the main axis. An actual machine tool is also operated in the same manner as a three-dimensional image.

  Referring to FIG. 1, in indexing control, display control unit 22 acquires a designated surface of a work selected by an operator in an image. The arithmetic processing unit 25 acquires the current orientation and angle of the designated surface based on the workpiece model data. Further, the arithmetic processing unit 25 acquires the current position of the feed axis from the position detection device 34. The arithmetic processing unit 25 calculates the amount of movement of the feed axis so that the designated surface becomes perpendicular to the axis of the spindle. At this time, for the rotation feed shaft, the rotation angle of the rotation feed shaft is calculated.

  Then, the display control unit 22 displays an image in which the machine tool is driven along the selected feed axis. The program creation unit 21 creates a movement program for driving the machine tool. The movement program created by the program creation unit 21 is sent to the reading / interpretation unit 72. Then, each axis servo motor 75 is driven, and the specified surface can be indexed.

  As described above, the control device 70 acquires the operation content in which one surface of the workpiece is selected as the designated surface by the operator, and calculates the rotation angle of the rotary feed shaft for directing the designated surface in a predetermined direction. An operation command for rotating the table based on the rotation angle is generated. Since the control device 70 can designate a designated surface with a three-dimensional image, it can easily designate a designated surface to be indexed. Further, it is not necessary to calculate a complicated rotation angle, and a desired surface can be easily indexed.

  Referring to FIG. 11, animation button 61 h is arranged in button region 61 on manual operation screen 60 c of the present embodiment. By pressing the animation button 61h after selecting the designated surface, the image moves and the operation of the machine tool can be confirmed. The machine tool can confirm the state of movement with a three-dimensional image while maintaining the stopped state. For this reason, the presence or absence of an abnormality can be confirmed with a three-dimensional image. For example, it can be confirmed in advance that the tool T does not interfere with the workpiece W. After that, the designated surface can be indexed by pressing the execution button 47 of the operation panel 41.

  In the present embodiment, the surface perpendicular to the workpiece mounting surface of the table 16 is the designated surface of the workpiece, but an inclined surface that is not parallel or perpendicular to the workpiece mounting surface can be designated. The machine tool 1 of the present embodiment is a table turning type having an A axis and a C axis on the table 16 side. In the case of a spindle turning type machine tool having an A axis and a C axis on the spindle side, the spindle side can be rotated along the A axis or the C axis so that the axis of the spindle is perpendicular to the designated surface. . In the case of a mixed type machine tool having an A axis on the spindle side and a C axis on the table side, both the spindle side and the table side can be rotated to make the axis of the spindle perpendicular to the specified surface. Furthermore, in the present embodiment, the control for directing the designated surface selected by the operator toward the main axis has been described. However, the present invention is not limited to this configuration, and can be applied to control for directing the designated surface in a predetermined direction. For example, the control device can be formed so that the direction in which the designated surface is directed can be set.

  FIG. 13 shows a sixth manual operation screen in the present embodiment. In the above-described control, the tool or workpiece is moved by operating the manual operation screen. In the present embodiment, in addition to the tool and the workpiece, the auxiliary device 33 provided in the machine tool can be moved by operating the manual operation screen 60d. Here, a tool changer is illustrated as an example of the auxiliary device 33.

  In the manual operation screen 60d, the tool changer is selected from the menu displayed by pressing the display switching button 61b. The tool changer according to the present embodiment includes a tool magazine 93 that stores a plurality of tools T, an exchange arm 96 that attaches and removes a tool to and from the spindle, and a tool between the tool magazine 93 and the exchange arm 96. And a transfer device 94 for transferring the. A plurality of tools are arranged in the tool magazine 93. The position of the tool T1 is an exchange position for taking out the tool from the tool magazine 93 and storing the tool in the tool magazine 93.

  For example, the operator moves to the replacement position as indicated by an arrow 205 along the direction in which the tool magazine 93 extends while maintaining the state in which the tool T2 is pressed with a finger. By this operation, in the image of the machine tool and the actual machine tool, the tool magazine 93 is rotated, and the tool T2 can be arranged at the replacement position. Thus, the movement amount of the tool magazine 93 is determined according to the movement amount of the finger. In addition, by manually moving the tool magazine 93, the type of tool arranged in the tool magazine 93 can be confirmed. In addition, for example, by manipulating the image of the conveying device 94, the tool arranged at the exchange position can be manually moved to the exchange arm 96. Even when the auxiliary device 33 is driven, the direct mode or the normal mode can be selected by the buttons 61c and 61d.

  With reference to FIG. 1, when operating the auxiliary | assistant apparatus 33 manually, the display control part 22 acquires the operation content of an operator's image. The arithmetic processing unit 25 calculates the movement amount. Then, the operation command generation unit 27 of the auxiliary device sends an operation command according to the operation of the worker to the auxiliary device control unit 32. Then, the auxiliary device control unit 32 operates the auxiliary device 33 based on the operation command. As described above, the control device 70 of the present embodiment is configured to operate the auxiliary device without using a program.

  As a manual operation of the auxiliary device 33, the designated portion of the auxiliary device 33 can be started and stopped in addition to moving the portion designated by the operator. Next, a cooling liquid supply device will be described as an example of the auxiliary device 33.

  FIG. 14 shows a seventh manual operation screen in the present embodiment. On the seventh manual operation screen 60e, the coolant supply device is selected from the menu list displayed by pressing the display switching button 61b. The coolant supply apparatus of the present embodiment includes a tank that stores coolant, a pump, and a coolant jet nozzle 95. In the image shown in FIG. 14, the tip portion of the spindle head 14 is enlarged and displayed. A coolant jet nozzle 95 is disposed at the tip of the spindle head 14.

  The operator presses the coolant ejection nozzle 95 on the manual operation screen 60e. By pushing the coolant jet nozzle 95, the coolant supply device can be started and the coolant can be jetted from the coolant jet nozzle 95. Alternatively, it is possible to stop the ejection of the coolant by pushing the coolant ejection nozzle 95 while the coolant is being ejected. In the present embodiment, when the auxiliary device is operated, the auxiliary device is highlighted and displayed so that the operating state of the auxiliary device becomes clear. In this example, the color of the coolant jet nozzle 95 changes. Alternatively, an image indicating whether the auxiliary device is driven or stopped may be displayed so that the state where the auxiliary device is driven or stopped is clear.

  FIG. 15 shows a flowchart of control when starting or stopping the auxiliary device. Referring to FIGS. 1 and 15, in step 151, display control unit 22 displays a three-dimensional image of the part selected by the operator on display unit 28. In step 152, the display control unit 22 detects that a predetermined auxiliary device 33 has been pressed in the image. That is, the display control unit 22 detects that the operator has selected the predetermined auxiliary device 33.

  Next, in step 153, the arithmetic processing unit 25 determines whether or not the selected auxiliary device 33 is stopped. In step 153, when the auxiliary device 33 is stopped, the process proceeds to step 154. In step 154, the auxiliary device 33 is activated. In step 153, when the auxiliary device 33 is operating, the process proceeds to step 155. In step 155, the auxiliary device 33 is stopped. Next, in step 156, the operating state of the auxiliary device is displayed. In the present embodiment, the display control unit 22 changes the color of the auxiliary device 33 according to the operating state or the stopped state.

  In the manual operation of the auxiliary device 33 according to the present embodiment, the operation command generation unit 27 of the information control unit 20 sends the operation command to the auxiliary device control unit 32. A program for moving the auxiliary device 33 may be created. For example, the program creation unit 21 can create a program including M code for ejecting the coolant from the coolant jet nozzle 95. In this case, the program creation unit 21 generates a program based on the operator's image operation and sends it to the reading interpretation unit 72. The reading interpretation unit 72 sends an operation command for the auxiliary device 33 to the auxiliary device control unit 32. Then, the auxiliary device control unit 32 drives the auxiliary device 33 based on the operation command.

  Next, a support function that facilitates creation of a program for driving a machine tool such as a machining program will be described. In creating a machining program, command codes such as G codes and M codes are frequently used. Based on the command code, the tool is moved relative to the workpiece or the auxiliary device is controlled.

  After machining the workpiece, the machining program may be corrected by checking the machining result. Or, there are cases where it is desired to confirm which part of the workpiece is processed by the command code. However, there are many command codes, and it is difficult for an operator to remember all the command code numbers. For this reason, in the prior art, the worker has been searching for a corresponding part by relying on memory. Or the worker was looking for the applicable location, referring to a reference. For this reason, workers are required to have advanced knowledge and judgment. In addition, it may take time or errors may occur.

  In the control device of the present embodiment, the position of the machining program can be specified while viewing a three-dimensional image, or the part to be machined of the workpiece can be specified based on the command code of the machining program.

  FIG. 16 shows a first program editing screen displayed on the display panel of the operation panel. The creation of the program according to the present embodiment includes a case where a new program is created and a case where a program that has already been created is edited to create this program. When creating a machining program, an operation mode selection button 49a for setting the edit mode is pressed with reference to FIG. Then, with reference to FIG. 16, the program editing screen 55a is displayed by pressing the selection unit 51a.

  The program editing screen 55a of the present embodiment includes a display area 81a and a display area 81b. A machining program is displayed in the display area 81a. In the display area 81a, a machining program can be created. In the display area 81a, a plurality of selection sections 85a and 85b are arranged. The user can select a machining program to be created by pressing one of the selection units 85a and 85b. Here, the selection unit 85b is selected.

  Further, by pressing a button 59a arranged in the button area 59, information displayed in the right display area 81b can be selected. In this example, a three-dimensional image of the processed workpiece is displayed in the display area 81b.

  On the program edit screen 55a, a desired portion of the image displayed in the display area 81b can be selected by pressing with a finger. In the display area 81a, the corresponding part of the processing program for processing the selected image portion can be displayed. For example, one hole portion 103a is selected in the workpiece image in the display area 81b. Then, by pressing the corresponding part display button 59b in the button area 59, the corresponding part of the machining program is displayed in the display area 81a. Further, a mark 103b is displayed in the corresponding part. A mark 103b indicates a command code for processing the hole portion 103a of the workpiece.

  FIG. 17 shows a flowchart of control for selecting a desired portion of a three-dimensional image and displaying the corresponding portion of the machining program. Referring to FIGS. 1 and 17, in step 161, display control unit 22 displays a machining program and a three-dimensional workpiece image on display unit 28. The operator selects a desired portion of the image by pressing it with a finger. In step 162, the display control unit 22 detects selection of a part of the image of the workpiece. That is, the display control unit 22 detects the part of the workpiece selected by the operator.

  Next, in step 163, the arithmetic processing unit 25 calculates the coordinate value of the selected portion of the workpiece. For example, the coordinate value of the workpiece coordinate is calculated. In step 164, the arithmetic processing unit 25 analyzes the machining program. The arithmetic processing unit 25 extracts a command code for processing the portion of the calculated coordinate value from the processing program. When there are a plurality of corresponding parts of the machining program, the last command code is selected. Alternatively, when there are a plurality of corresponding portions of the machining program, all of them may be extracted.

  Next, in step 165, the display control unit 22 displays a corresponding part of the machining program. For example, when the machining program is very long, the display range of the machining program is selected so that the corresponding part is displayed. Next, in step 166, the display control unit 22 displays the mark 103b for the command code of the corresponding machining program.

  As described above, the control device 70 can extract a corresponding part of the machining program based on the operation of the image of the machine tool. The operator can save the trouble of searching for the corresponding part of the machining program, and can easily confirm or correct the corresponding part of the machining program.

  FIG. 18 shows a second program editing screen displayed on the display panel of the operation panel. In the second program editing screen 55b, when a command code of a desired machining program is selected in the display area 81a, an image of a portion to be machined with the selected command code is displayed in the display area 81b. For example, when the operator presses a desired part of the machining program in the display area 81a, the selected part is surrounded by a frame 104a. By pressing the corresponding part display button 59b in the button area 59, a three-dimensional workpiece image corresponding to the selected part of the machining program is displayed in the display area 81b.

  Further, a mark 104b is displayed in a corresponding portion of the machine tool image. At this time, a three-dimensional image is displayed in a state of being enlarged or moved for easy viewing by the operator. Thus, by selecting an arbitrary part of the machining program, an image of the part to be machined can be displayed.

  FIG. 19 shows a control flowchart for displaying a part of a workpiece to be machined in a selected part of the machining program. Referring to FIGS. 1 and 19, in step 171, display control unit 22 displays a machining program and a three-dimensional workpiece image. The operator selects a desired part of the machining program. In step 172, the arithmetic processing unit 25 detects a selected part of the machining program. In step 173, the arithmetic processing unit 25 calculates the coordinate value of the selected portion of the machining program. For example, the arithmetic processing unit 25 calculates a work coordinate value. In step 174, the arithmetic processing unit 25 performs a three-dimensional image analysis. The arithmetic processing unit 25 identifies a corresponding part of the three-dimensional image based on the calculated coordinate value.

  In step 175, the display control unit 22 displays a corresponding portion of the three-dimensional image. The display control unit 22 displays the workpiece image in an enlarged or moved state so that the corresponding portion can be easily seen. Next, in step 176, the display control unit 22 displays the mark 104b on the corresponding part of the image.

  As described above, the control device 70 can easily specify the part of the workpiece to be machined in one part of the machining program. For this reason, it is possible to easily check the machining program and correct an error.

  In the program edit screen, an image of the auxiliary device is displayed, and a command code for starting and stopping the auxiliary device is automatically inserted into the machining program by pressing the image of the auxiliary device. Can do. By performing this control, the operator does not need to learn command codes and arguments related to the auxiliary device, and can easily create a machining program. In addition, erroneous operations such as command code input errors can be reduced.

  Next, control for detecting the state of the machine tool and notifying or warning the operator of the state of the machine tool will be described.

  FIG. 20 shows a diagnostic screen for displaying the state of the machine tool. The diagnosis screen 63 is an auxiliary screen displayed so as to overlap the main screen. An information display area 86 is set at the top of each main screen. With reference to FIG. 1, the operation state detection device 36 detects the operation state of the machine tool in each operation mode. The arithmetic processing unit 25 determines whether or not the operating state of the machine tool 1 matches a predetermined condition. When the state of the machine tool 1 matches a predetermined condition, the display control unit 22 acquires the determination result and displays an icon corresponding to the state of the machine tool 1 in the information display area 86. The icon image is stored in the storage unit 26 in advance.

  In the example shown in FIG. 20, an abnormality has occurred in the tool measurement device during the measurement of the tool, and the measurement of the tool is interrupted. The arithmetic processing unit 25 determines that an abnormality has occurred in the tool measuring device 92 based on a signal from the operating state detection device 36. The display control unit 22 displays a warning icon 86 a in the information display area 86.

  When the worker presses the icon 86a, the display control unit 22 displays a diagnosis screen 63 including information related to warnings and notifications of the machine tool 1. The display control unit 22 first displays a three-dimensional image in the display area 87a. At this time, an image including a portion where an abnormality has occurred is displayed. The display control unit 22 displays the machine tool from the direction in which the portion where the abnormality has occurred is displayed. In the example shown in FIG. 20, the image which looked at the table 16 and the spindle head 14 from the back side is displayed. Then, the display control unit 22 displays the mark 100 over the tool measuring device 92 that causes the warning. Further, the display control unit 22 blinks the mark 100 and displays it so that the operator can easily understand the abnormal part.

  Next, when the operator presses the mark 100 with a finger, the display control unit 22 displays the display areas 87b and 87c so as to overlap the image of the machine tool. The type of warning is displayed in the display area 87b. The display area 87c displays details of the warning such as the cause of the warning and the recovery method.

  Thus, since the control apparatus of this Embodiment displays the location where the warning generate | occur | produced in a three-dimensional image, the operator can recognize the abnormal location intuitively. In addition, the operator can easily confirm detailed information regarding the warning by pressing the mark 100 displayed at the abnormal location.

  In the present embodiment, a warning when an abnormality has occurred in the machine tool has been described as an example. However, the present invention is not limited to this form, and a notification of the state of the machine tool may be used. For example, it may be a notification that the repair time of the machine tool has come.

  As a mark for displaying a part related to a warning or notification such as an abnormal part, the display form can be changed depending on the importance. For example, when the operation cannot be continued due to a machine tool breakage or the like, the red mark can be made to blink further. In the case of a light warning that can continue operation, it can be lit in a yellow mark. In the case of notification of the repair time of the machine tool, it can be lit in a blue mark.

  FIG. 21 shows a flowchart of control for displaying an alarm or notification. Referring to FIGS. 1 and 21, in step 181, operating state detection device 36 detects the operating state of a predetermined part of the machine tool. The arithmetic processing unit 25 detects that an abnormality has occurred in the operating state. In step 182, the arithmetic processing unit 25 identifies the part where the abnormality has occurred.

  Next, in step 183, the display control unit 22 selects a three-dimensional image. The type of image displayed when an abnormality occurs is stored in the storage unit 26 in advance. For example, when an abnormality occurs in the tool measuring device 92, an image including the carriage 17 and the spindle head 14 including the image of the tool measuring device 92 is selected.

  Next, in step 184, the display control unit 22 displays a three-dimensional image. In this case, the display control unit 22 selects and displays the display direction so that the part where the abnormality has occurred is easy to see from the operator. In step 185, the display control unit 22 specifies the position on the image of the part where the abnormality has occurred. And the display control part 22 displays a mark in the part in which abnormality occurred in the image of the machine tool.

  Thereafter, the control device 70 of the present embodiment continuously checks whether or not the abnormality that has occurred has been resolved. The operator can eliminate the cause of the abnormality by looking at the diagnosis screen 63. In step 186, the arithmetic processing unit 25 receives a signal indicating the operation state of the machine tool from the operation state detection device 36. And the arithmetic processing part 25 discriminate | determines the presence or absence of abnormality.

  In step 187, the arithmetic processing unit 25 determines whether or not the apparatus abnormality has been resolved. If the apparatus abnormality is not removed, the process returns to step 186. That is, the determination of the presence or absence of abnormality is continued. In step 187, if the apparatus abnormality is removed, the process proceeds to step 188. In step 188, the mark 100 displayed on the diagnosis screen 63 is deleted. Also, the icon 86a displayed in the information display area 86 on the main screen is deleted.

  As described above, the control device according to the present embodiment automatically monitors the presence or absence of abnormality removal. The control when the abnormality is removed is not limited to this form, and any control can be employed. For example, a reset button is provided in the button area of the diagnostic screen. When the abnormality is removed, the alarm or notification can be canceled by pressing the reset button.

  The machine tool of the present embodiment is a 5-axis control machine tool, but is not limited to this form, and the present invention can be applied to a machine tool having an arbitrary feed axis. The image of the machine tool displayed on the display unit of the present embodiment is a three-dimensional image based on a three-dimensional solid model, but may be a surface model or a wire frame model. Moreover, it is not restricted to these forms, A two-dimensional planar image may be sufficient.

  The above embodiments can be combined as appropriate. In each of the above-described controls, the order of the steps can be appropriately changed within a range where the function and the action are not changed. In the respective drawings described above, the same or equivalent parts are denoted by the same reference numerals. In addition, said embodiment is an illustration and does not limit invention. Further, in the embodiment, changes of the embodiment shown in the claims are included.

DESCRIPTION OF SYMBOLS 1 Machine tool 14 Spindle head 16 Table 20 Information control part 21 Program preparation part 22 Display control part 25 Arithmetic processing part 26 Memory | storage part 27 Operation command generation part 28 Display part 33 Auxiliary apparatus 34 Position detection apparatus 36 Operation state detection apparatus 41 Operation panel 45 Display Panel 55a, 55b Program Edit Screen 60a-60e Manual Operation Screen 70 Controller 75 Servo Motor for Each Axis 76 Machining Program 92 Tool Measuring Device 93 Tool Magazine 95 Coolant Jet Nozzle W Work T, T1, T2 Tool

Claims (4)

Control of the machine tool that processes the workpiece by moving the tool and the workpiece relatively by processing the machining program in the reading interpretation unit, interpolation calculation unit, and servo control unit and driving the servo motor of the feed axis A method,
Display the machine tool image on the touch panel display,
Pre-stores machine tool operations corresponding to operator operations on machine tool images,
Acquires the operation details of the operator for the image of the machine tool,
Generate an operation command for the machine tool to operate in response to the operation content,
Operate the machine tool based on the operation command,
When performing manual operation of the machine tool, an image of the feed axis portion of the machine tool is displayed on the display unit, and when the operator moves the image with a finger to the button area of the same screen, the actual machine tool displays the image of the image. The direct mode button that is driven and the actual machine tool are stopped, but the selected image part moves and the moving state including the feed axis and the moving amount is memorized, and all the desired movements on the screen are performed. Display the normal mode button to perform the memorized movement at once after finishing,
Furthermore, a linear motion axis button and a rotational axis button for selecting whether the feed axis is a linear motion axis or a rotational axis are displayed.
If the operator has the the direct mode button, the linear motion shaft button or select said rotary shaft button to move while maintaining the state of selecting a portion of the image of the machine tool by an operator, machine tool detecting a feed shaft and the movement amount corresponding to the movement direction of the machine of the image, implementing how to be sent to the reading interpreting unit generates a moving program including the operation command based on the moving amount of the feed spindle A method for controlling a machine tool, characterized by:   The machine tool control method according to claim 1, wherein the image of the machine tool displayed on the display unit is a three-dimensional image. Display the image of the auxiliary device of the machine tool on the display unit,
The operation content includes an operation on the image of the auxiliary device,
The machine tool control method according to claim 1, wherein the operation command includes a command to operate the auxiliary device, and the auxiliary device is operated based on the operation command. Control of the machine tool that processes the workpiece by moving the tool and the workpiece relatively by processing the machining program in the reading interpretation unit, interpolation calculation unit, and servo control unit and driving the servo motor of the feed axis A device,
A touch panel type display for displaying an image of the machine tool;
A storage unit for storing information on machining of the machine tool;
An image of a machine tool to be displayed on the display unit, and an information control unit that acquires an operation content of an operator for the image of the machine tool
The storage unit stores the operation of the machine tool corresponding to the operator's operation on the image of the machine tool,
The information control unit generates an operation command for a machine tool to operate in response to the operation content,
The control device operates a machine tool based on the operation command,
When performing manual operation of the machine tool, an image of the feed axis portion of the machine tool is displayed on the display unit, and when the operator moves the image with a finger to the button area of the same screen, the actual machine tool displays the image of the image. The direct mode button that is driven and the actual machine tool are stopped, but the selected image part moves and the moving state including the feed axis and the moving amount is memorized, and all the desired movements on the screen are performed. Display the normal mode button to perform the memorized movement at once after finishing,
Furthermore, a linear motion axis button and a rotational axis button for selecting whether the feed axis is a linear motion axis or a rotational axis are displayed.
If the operator has the the direct mode button, the linear motion shaft button or select said rotary shaft button to move while maintaining the state of selecting a portion of the image of the machine tool by an operator, the The information control unit detects a feed axis and a movement amount corresponding to a movement direction in the image of the machine tool, generates a movement program including the operation command based on the movement amount of the feed axis, and sends the movement program to the reading interpretation unit. the control sends to characterized in that it is performed, the machine tool controller.

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