JP2008023692A - Numerical value control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a numerical value control device capable of slant machining with a high degree of accuracy. <P>SOLUTION: This numerical value control device executes control on a machining device capable of machining with a tool attached in a slanting manner. It is provided with a communication processing means storing a machine coordinate at the point of time when the signal of a sensor connected to the outside is input, a tool slant angle calculating means calculating the slant angle of the tool based on a plurality of machine coordinates stored by the communication processing means, and a display means displaying the slant angle of the tool. That enables automatic calculation of the tool attachment slant angle even in a machine tool with a mechanism manually adjusting the tool angle, and notification of the angle to a machine user. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a numerical control (Numerical Control) device (hereinafter referred to as an NC device) that automatically controls the operation of a machine based on numerical information composed of numerical values and symbols / symbols. The present invention relates to a numerical control device having a function of easily measuring an inclination angle of an attached tool.

  In machining in a grinding machine, tilt machining is one of important processes, and such tilt machining is performed by tilting a tool and using a tilt tool. In addition, since the tool mounting accuracy affects the tilt machining accuracy, the tool mounting accuracy is important in order to perform high-precision tilt machining.

  As a technique related to the installation accuracy of an inclined tool, for example, in a method for correcting an inclined tool of a numerically controlled machine tool having an inclined tool such as an angular type grinding machine, the tool diameter is measured and the numerical controller is used. There is a technique in which the numerical control device inputs the pulse diameter by disassembling the tool diameter into tilt coordinates and adding this to the moving distance (see, for example, Patent Document 1).

  Moreover, in the method of attaching a tool by inclining, the tool holder which can attach a tool inclining to a free angle is used widely. The tool angle adjustment of these tool holders is manually performed by using the scales engraved on the tool holder. In the following, these tool holders are referred to as tilt holders.

Japanese Patent Laid-Open No. 64-21610

  However, according to the above-described conventional technique, the angle adjustment of the tool attached to the tilt holder is fixed after visually aligning the graduation in units of 1 degree on the tilt holder. There is a problem that it is not good. Therefore, the numerical control device to which the tool is attached as described above has a problem that high-precision tilt machining cannot be performed.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a numerical control device capable of high-precision tilt machining.

  In order to solve the above-described problems and achieve the object, a numerical control device according to the present invention is a numerical control device that controls a processing device that can be processed with the tool tilted and attached to the outside. Communication processing means for storing machine coordinates at the time when a signal of the connected sensor is input, and tool inclination angle calculation means for calculating the inclination angle of the tool based on a plurality of machine coordinates stored in the communication processing means. And display means for displaying the tilt angle of the tool.

  According to the present invention, in a numerical control device that controls a machining device that can be machined with a tool tilted and attached, the machine coordinates at the time when a signal of an externally connected sensor is input are stored, The tool tilt angle is calculated based on a plurality of machine coordinates stored in the communication processing means, and the tool tilt angle is displayed. Thus, even in a machine tool having a mechanism for manually adjusting the tool angle, the tool tilt angle is displayed. It is possible to automatically calculate the mounting inclination angle and notify the machine user of the angle. Thereby, according to this invention, it becomes possible to attach a tool to a desired angle with high accuracy, and by using a lathe that adjusts the angle of the tool with high accuracy in this way, it is possible to perform high-precision inclined machining. There is an effect that it becomes possible.

  Embodiments of a numerical controller according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited to the following description, In the range which does not deviate from the summary of this invention, it can change suitably.

Embodiment 1 FIG.
In the present embodiment, in a two-axis control simple lathe equipped with a sensor 14 for measuring a tool shape, a case where a drilling drill 12 is attached to a tool post 13 using an inclined holder 11 as shown in FIG. Explained as an example. FIG. 1 is a schematic diagram for explaining the concept of tool angle measurement in the numerical control apparatus according to Embodiment 1 of the present invention, and a drilling drill 12 and a sensor attached to a tool post 13 using an inclined holder 11. 14 is a diagram showing a positional relationship with FIG.

  In FIG. 1, point A (Xa, Za) is a first contact point with the sensor 14 in the drilling drill 12 for measuring the tool tilt angle of the drilling drill 12. Specifically, the drilling drill 12 attached to the tool post 13 at a predetermined tool angle θ using the inclined holder 11 and positioned at a predetermined position is moved without changing the tool angle θ to be in a fixed position. This is the first contact point with the sensor 14 on the tool reference line of the drilling drill 12 (the tool reference line will be described later with reference to FIG. 3) when being brought into contact with a certain sensor 14.

  In FIG. 1, point B (Xb, Zb) is a second contact point with the sensor 14 in the drilling drill 12 for measuring the tool tilt angle of the drilling drill 12. Specifically, after contact at point A (Xa, Za), the drilling drill 12 is moved without changing its tool angle θ, and is moved away from the sensor 14 to return to a predetermined position. This is the second contact point with the sensor 14 on the tool reference line of the drilling drill 12 when the drilling drill 12 is moved and brought into contact with the sensor 14 again without changing θ. The second contact point is a place different from the first contact point. In addition, it is not necessary to return the drilling drill 12 to a predetermined position after the measurement of the point A (Xa, Za).

  That is, in order to measure the tool tilt angle of the drilling drill 12 in the present embodiment, the drilling drill 12 is moved in the direction of the sensor 14 without changing the tool angle θ, and the sensor 14 at the fixed position is moved. After the contact, the drilling drill 12 is moved away from the sensor 14 without changing the tool angle θ, and then the drilling drill 12 is moved by the sensor 14 without changing the tool angle θ. The operation | movement which makes another part of the processing drill 12 contact the sensor 14 again is performed.

  FIG. 2 is a view showing a state in which the drilling drill 12 is mounted on the inclined holder 11. The tilt holder 11 according to the present embodiment is a tool holder to which a drilling drill 12 can be tilted at a free angle in the directions of arrows α and β in FIG.

  In this embodiment, the tool (drilling drill 12) attached to the tool post 13 has the following characteristics. That is, when the tool (drilling drill 12) attached to the tool rest 13 in the present embodiment is attached to the tool rest 13 without using the inclined holder 11, the basic axis of the machine as shown in FIG. With sides or planes that are horizontal or perpendicular to. In the present specification, the sides and surfaces are referred to as tool reference lines. In FIG. 3, as an example of the tool reference line, a tool reference line is shown for the drilling drill 12 and the face mill 15 which is another tool.

  Further, the machining operation of the simple lathe is controlled by a numerical control (Numerical Control) device (hereinafter referred to as an NC device). FIG. 4 is a configuration diagram showing a main schematic configuration of the NC apparatus according to the present embodiment. As shown in FIG. 4, the NC apparatus according to the present embodiment includes a servo communication processing unit 101, an interpolation processing unit 106, a tool information update processing unit 110, a display unit 117, a storage unit 115, and a control unit. 116.

  The servo communication processing unit 101 is activated at a certain fixed period (for example, 5 msec period), and reads the “movement amount per unit time 102” of each axis output from the interpolation processing unit 106 as shown in FIG. Based on the “movement amount 102 per unit time”, a movement command to be output to each servo 103 is generated according to the “movement amount 102 per unit time”, and a movement command is issued to each servo 103. Is output. Here, FIG. 5 is a diagram for explaining the data flow of the NC device according to the present embodiment, and relates to the servo communication processing unit 101, the servo 103, the interpolation processing unit 106, and the tool information update processing unit 110. It is a figure for demonstrating the flow of the data to perform. Further, while in the measurement mode according to the measurement procedure of the tool inclination angle in the present embodiment described later (operation 3), the measurement procedure of the tool inclination angle in the present embodiment described later will be described (operation). When the servo communication processing unit 101 detects an input signal from the sensor 14 by 5), the output of the movement command to each servo 103 is stopped and the following processing is performed.

  That is, the servo communication processing unit 101 uses the “sensor input coordinates 105b” of the sensor input data unit 105 as the machine coordinates (machine coordinates at the position where the sensor is in contact) at the time when the input signal (sensor input) from the sensor 14 is received. The approach direction to the sensor is stored in the “approach direction bit 105c” of the sensor input data section 105, and the “sensor input flag 105a” of the sensor input data section 105 is turned on.

  The interpolation processing unit 106 is activated at a constant cycle (for example, 10 msec cycle), reads the “manual moving speed 107” output from the machine I / O processing unit (not shown), and outputs the “manual moving speed 107”. Based on this, the “movement amount 102 per unit time” of each axis is calculated and output to the servo communication processing unit 101. Here, the machine I / O processing unit corresponds to information input means such as an operation switch, for example.

  In addition, the interpolation processing unit 106 is in the “sensor input flag 105a” of the sensor input data unit 105 while in the measurement mode according to the measurement procedure of the tool inclination angle in the present embodiment described later (operation 3). ”Is detected, the“ sensor input coordinates 105b ”data of the sensor input data section 105 is copied to the“ read coordinates 108b ”of the tool information update data section 108, and the tool information update data section 108 The “data set completion flag 108a” is turned on.

  Further, while the “sensor input flag 105a” of the sensor input data unit 105 is on, the “movement amount 105 per unit time” in the sensor direction is based on the information of the “approach direction bit 105b” of the sensor input data unit 105. "Is not output.

  Further, while the “sensor input flag 105a” of the sensor input data unit 105 is on, the “per unit time” in the direction of escaping from the sensor 14 based on the information of the “approach direction bit 105b” of the sensor input data unit 105. The movement amount 102 ”is accumulated in the data“ escape amount 109 ”, which is the escape amount from the sensor for each axis.

  Further, when it is confirmed that the “relief amount 109” of any of the axes is equal to or larger than a certain amount and the “data set completion flag 108a” of the tool information update data unit 108 is turned off, the sensor input data unit 105 The “sensor input flag 105a” is turned off.

  The tool information update processing unit 110 is activated at a certain fixed period (for example, 20 msec period), and is in the measurement mode according to the measurement procedure of the tool inclination angle in the present embodiment described later (operation 3). When the “data set completion flag 108a” of the tool information update data unit 108 is turned on, the “read coordinate 108b” of the tool information update data unit 108 is replaced with “coordinate data [0]” of the coordinate data 111. And the “data set completion flag 108a” of the tool information update data unit 108 is turned off.

  When the “data set completion flag 108a” of the tool information update data unit 108 is turned on again at the next and subsequent startups, the tool information update processing unit 110 reads “read” of the tool information update data unit 108. The “coordinate 108b” is copied to the “coordinate data [1]” of the coordinate data 111, the “data set completion flag 108a” of the tool information update data unit 108 is turned off, and then the “coordinate data [0] of the coordinate data 111 is set. ] ”And“ coordinate data [1] ”, the inclination angle of the tool is calculated, and in the tool information table 113 based on“ selected tool number 112 ”output from the machine I / O processing unit (not shown). The “tool angle” of the selected tool is updated. Here, for example, the tool angle is an angle formed by a “vector in the horizontal direction” and a “vector determined from two points”, and is calculated using the cosine theorem.

  The display unit 117 is a display unit that displays the tilt angle of the tool calculated by the tool information update processing unit 110 and other information related to the tool to be shown to the user. That is, the display unit 117 displays, for example, information in the tool information table 113 in FIG.

  The storage unit 115 is a storage unit that stores various data used or calculated by the servo communication processing unit 101, the interpolation processing unit 106, and the tool information update processing unit 110. The storage unit also stores various data and programs used for controlling the NC apparatus.

  The storage unit 115 includes, for example, a sensor input data unit 105 that is a storage region for storing sensor signal-related data, a tool information update data unit 108 that is a storage region for storing data used for updating information about the tool, a tool The relief amount 109 indicating the amount of movement per unit time only in the axis of the relief direction, coordinate data 111 which is tool angle calculation data used for calculating the tilt angle of the tool, and the selected tool number 112 indicating the number of the selected tool A tool information table 113, which is an area for storing information on the tool including the tilt angle of the tool, is stored. The data described above is a list of data closely related to the present invention, and other data related to the control of the NC device is also stored. The control unit 116 is a control unit that controls the entire NC apparatus.

  Next, a method for measuring the tool tilt angle in the numerical control apparatus according to the present embodiment will be described. First, the procedure for measuring the tool tilt angle in the present embodiment will be described. The user of a simple lathe measures the tool inclination angle according to the following procedure using the NC apparatus according to the present embodiment.

(Operation 1) The tool angle is manually adjusted and fixed while observing the scale on the holder.
(Operation 2) The tool shape measurement sensor is set in a signal input ready state.
(Operation 3) A “tool angle measurement mode” selection instruction for measuring the tilt angle of the tool attached to the tilt holder 11 is input to the NC apparatus.
(Operation 4) An instruction to select a tool to be measured is input (for example, by a tool post turning operation).
(Operation 5) A point (Xa, Za) of the tool reference line of the tool to be measured is brought into contact with the sensor by manual operation.
(Operation 6) A point B (Xb, Zb) at another location on the tool reference line in the tool to be measured is brought into contact with the sensor by manual operation.

  The above (Operation 5) and (Operation 6) may be automatically performed under the control of the NC device.

  Subsequently, a flow of a tool angle measurement process in each processing unit of the NC device according to the present embodiment performed based on the above-described user operation will be described. First, the processing flow of the servo communication processing unit 101 will be described with reference to FIGS. 5 and 6. As described above, FIG. 5 is a diagram for explaining the data flow of the NC device according to the present embodiment. FIG. 6 is a flowchart for explaining the processing flow of the servo communication processing unit 101.

  When activated, the servo communication processing unit 101 checks whether or not there is a movement command from the interpolation processing unit 106 (step S100). Specifically, the servo communication processing unit 101 checks whether or not the movement amount 102 per unit time is input from the interpolation processing unit 106. The servo communication processing unit 101 is activated periodically, for example, at a cycle of 5 msec.

  Here, when there is no movement command, that is, when no movement command is input (No at Step S100), the servo communication processing unit 101 ends the process as it is. On the other hand, if there is a movement command (Yes in step S100), that is, if the movement amount 102 per unit time is input from the interpolation processing unit 106, the process proceeds to the next step, and the servo communication processing unit 101 determines that the current mode is the tool angle. It is checked whether or not the measurement mode is set (step S101).

  When the current mode is not the tool angle measurement mode (No at Step S101), the servo communication processing unit 101 outputs a movement command corresponding to the movement amount 102 per unit time to the servo because the servo communication process is normal (Step S107). ), The process is terminated.

  If the current mode is the tool angle measurement mode (Yes at step S101), the process proceeds to the next step, and the servo communication processing unit 101 determines that “sensor signal input is present” and “sensor input present flag of the sensor input data unit 105”. It is checked whether or not the two conditions “105a is off” are simultaneously satisfied (step S102). The sensor input data unit 105 is a storage area for storing sensor signal-related data in the storage unit 115.

  Here, the sensor signal is a signal indicating that the tool has contacted the sensor. The second condition “the sensor input presence flag 105a of the sensor input data section 105 is off” is for invalidating the input of the sensor signal when the tool is released from the sensor. If the above two conditions are not satisfied, the servo communication processing unit 101 outputs a movement command corresponding to the movement amount 102 per unit time to the servo (step S107), and the process is terminated. .

  When the above two conditions are satisfied, information (machine coordinates and approach direction) at the time of sensor signal input is stored. That is, the servo communication processing unit 101 once clears the sensor input data unit 105 (step S103), calculates the machine coordinates at the time of sensor contact in consideration of a delay in servo communication, and the result is obtained as sensor input data. The “sensor input coordinates 105b” of the unit 105 is set (step S104).

  Further, the final approach direction at the time of sensor contact is set for each axis in “approach direction bit 105b” of the sensor input data section 105 as shown in FIG. 7 (step S105). Finally, the servo communication processing unit 101 turns on the “sensor input flag 105a” in the sensor input data unit 105 (step S106), and ends the process.

  Next, the processing flow of the interpolation processing unit 106 will be described with reference to FIGS. 8A and 8B are flowcharts for explaining the processing flow of the interpolation processing unit 106. When the interpolation processing unit 106 is activated, the interpolation processing unit 106 checks whether or not a manual moving speed 107 that is a moving speed when the tool is manually moved is input by the machine I / O processing unit (step S200). The interpolation processing unit 106 is activated periodically, for example, with a period of 10 msec.

  If there is no manual movement speed 107 (No at Step S200), the interpolation processing unit 106 ends the process and waits until it is activated next time. On the other hand, when there is a manual movement speed 107 (Yes at Step S200), the interpolation processing unit 106 checks whether or not the current mode is the tool angle measurement mode (Step S201).

  When the current mode is not the tool angle measurement mode (No at Step S201), the interpolation processing unit 106 calculates the movement amount 102 per unit time of each axis based on the manual movement speed 107 as a normal manual movement process. (Step S212). Then, the interpolation processing unit 106 outputs the calculated movement amount 102 per unit time to the servo communication processing unit 101 (step S213), ends the processing, and waits until it is activated next.

  If the current mode is the tool angle measurement mode (Yes at Step S201), the process proceeds to the next step, and the interpolation processing unit 106 determines whether the “sensor input flag 105a” of the sensor input data unit 105 has risen (ON). Whether or not) (step S202).

  If the rising edge (ON) of the “sensor input flag 105a” is detected (Yes at step S202), it means that the servo communication processing unit 101 has detected the sensor signal and updated the sensor input data unit 105. Therefore, the interpolation processing unit 106 proceeds to preparation for updating the tool information updating data unit 108. Then, the interpolation processing unit 106 checks whether or not the “data set completion flag” of the tool information update data unit 108 is off (step S203).

  If this flag is OFF (Yes at Step S203), it means that the tool information update processing unit 110 has used the previously set tool information update data unit 108, and therefore the interpolation processing unit 106 After temporarily clearing the sensor input data unit 105 (step S204), the data of the “sensor input coordinate 105b” of the new sensor input data unit 105 is copied to the “read coordinate” of the tool information update data unit 108 ( Step S205).

  Thereafter, the interpolation processing unit 106 turns on the “data set completion flag” of the tool information update data unit 108 for handshaking with the tool information update processing unit 110 (step S206), and proceeds to the next step, step S207.

  Even when the rising edge of the “sensor input flag 105a” is not detected in step S202 (No in step S202), the process similarly proceeds to step S207. Also, when the “data set completion flag” of the tool information update data unit 108 is not turned off in step S203 (No in step S203), the process proceeds to step S207 in the same manner.

  Subsequently, the interpolation processing unit 106 checks whether or not the “sensor input flag 105a” of the sensor input data unit 105 is turned on (step S207). If the “sensor input flag 105a” of the sensor input data unit 105 is not turned on (No at step S207), the interpolation processing unit 106 performs normal manual movement processing based on the manual movement speed 107. The movement amount per unit time of each axis is calculated (step S212). Then, the interpolation processing unit 106 outputs the calculated movement amount 102 per unit time to the servo communication processing unit 101 (step S213), ends the processing, and waits until it is activated next.

  On the other hand, when the “sensor input flag 105a” of the sensor input data unit 105 is turned on (Yes at Step S207), an interpolation process is performed in order to move only the axis in the escape direction so as not to bite into the sensor any more. The unit 106 refers to the “approach direction bit 105b” of the sensor input data unit 105, and calculates the movement amount per unit time for only the axis in the escape direction based on the manual movement speed 107 (step S208). Further, the interpolation processing unit 106 accumulates the movement amount at this time as the escape amount 109 and stores it in the storage unit 115 (step S209).

  Next, the interpolation processing unit 106 checks whether or not the cumulative value of the relief amount 109 exceeds a certain amount and the “data set completion flag” of the tool information updating data unit 108 is turned off (step S100). S210). If the condition of step S210 is satisfied (Yes at step S210), the tool information update data unit 108 previously set by the tool information update processing unit 110 has been used. In order to accept the sensor input data from the servo communication processing unit 101, the “sensor input flag 105a” of the sensor input data unit 105 is turned off (step S211). Then, the interpolation processing unit 106 outputs the movement amount 102 per unit time calculated during this flow to the servo communication processing unit 101 (step S213), ends the processing, and waits until it is activated next. .

  If the condition of step S210 is not satisfied (No at step S210), the interpolation processing unit 106 outputs the movement amount 102 per unit time calculated during this flow to the servo communication processing unit 101. (Step S213) The process is terminated and waits until the next activation.

  Next, the processing flow of the tool information update processing unit 110 will be described with reference to FIGS. FIGS. 9A and 9B are flowcharts for explaining the processing flow of the tool information update processing unit 110. When activated, the tool information update processing unit 110 checks whether or not the current mode is the tool angle measurement mode (step S300). The tool information update processing unit 110 is activated periodically, for example, at a cycle of 20 msec.

  When the current mode is not the tool angle measurement mode (No at Step S300), the tool information update processing unit 110 sets the current tool number in the tool number memo 114 of the storage unit 115 (Step S314) and ends the process. Wait until it is next started.

  When the current mode is the tool angle measurement mode (Yes at Step S300), the tool information update processing unit 110 determines whether or not the tool has been changed (Step S301). This determination is made based on the selection instruction from the machine I / O processing unit, and the “selected tool number 112” that is the tool number stored in the storage unit 115 and the previous tool information update. The “tool number memo 114” stored in the storage unit 115 in the activation cycle of the processing unit 110 is compared, and if there is a difference, it is determined that “tool replacement has been performed”.

  When it is determined that the tool has been changed (Yes at Step S301), the tool information update processing unit 110 clears the number of “coordinate data 111” stored in the storage unit 115 and the data corresponding thereto. (Step S302), the process proceeds to Step S303. If it is determined that the tool has not been changed (No at Step S301), Step S302 is skipped and the process proceeds to Step S303.

  Next, the tool information update processing unit 110 checks whether or not the “data set completion flag” of the tool information update data unit 108 is turned on (step S303). If the “data set completion flag” of the tool information update data unit 108 is not turned on, that is, if it is off (No at step S303), the current tool number is set in the “tool number memo 114” of the storage unit 115. (Step S314) The process ends, and the process waits until it is next activated.

  On the other hand, when the “data set completion flag” of the tool information update data unit 108 is turned on (Yes in step S303), it means that the interpolation processing unit 106 sets a new tool information update data unit 108. To do.

  Next, it is checked whether or not the newly measured coordinate data, that is, the data newly set to the read coordinates 108b of the tool information update data unit 108 by the interpolation processing unit 106 can be used for calculating the angle of the tool. Since two different measurement points are necessary for calculating the angle of the tool, the check performed here is to determine whether or not the previously measured data and the new measured data are data at different positions. The previously stored coordinate data is one of the coordinate data 111, which can be determined from the number of stored coordinate data. When the number of stored coordinate data is an even number, the previously stored coordinate data is the coordinate data [1] of the coordinate data 111, and when the number of stored coordinate data is an odd number, the previously stored coordinate data is stored. The coordinate data thus obtained becomes coordinate data [0] of the coordinate data 111.

  Therefore, the tool information update processing unit 110 checks the number of stored coordinate data and determines whether the number is an even number (step S304). If the number is even, the tool information update processing unit 110 sets the internal variables to “current = 0, previous = 1” (step S305). If the number is an odd number, the internal variable is set to “current = 1, previous = 0” (step S306).

  Next, the tool information update processing unit 110 compares the “read coordinates 108b” of the tool information update data unit 108 with the coordinate data [previous] of the “coordinate data 111” to determine whether there is a difference. (Step S307). If there is no difference between them (Yes in step S307), the “read coordinates 108b” of the tool information update data unit 108 set by the interpolation processing unit 106 is a position that has already been stored and cannot be used for angle calculation. Therefore, the process for obtaining the tool angle is skipped, and the process proceeds to step S313.

  Then, the tool information update processing unit 110 turns off the “data set completion flag” in the tool information update data unit 108 (step S313). Finally, the tool information update processing unit 110 sets the current tool number in the tool number memo 114 (step S314), ends the process, and waits until it is activated next.

  Returning to step S307, if there is a difference between the “reading coordinate 108b” and the coordinate data [previous] (No at step S307), the “reading coordinate 108b” in the tool information update data unit 108 is the new position information. Therefore, the tool information update processing unit 110 copies this to the coordinate data [current] (step S308), and uses it for the tool angle calculation in the subsequent process.

  Next, the tool information update processing unit 110 increments the number of stored “coordinate data 111” (step S309), and checks whether or not the stored number is two or more (step S310). Here, when the number of stored “coordinate data 111” is less than two, the tool angle cannot be obtained, so the process for obtaining the tool angle is skipped and the process proceeds to step S313.

  Then, the tool information update processing unit 110 turns off the “data set completion flag” in the tool information update data unit 108 (step S313). Finally, the tool information update processing unit 110 sets the current tool number in the “tool number memo 114” in the storage unit 115 (step S314), ends the process, and waits until it is activated next.

If the number of stored “coordinate data 111” is two or more, the inclination angle of the attached tool is calculated based on the stored “coordinate data 111” data (step S311). ), The tool angle (θ _n ) of the target tool number (Tn) in the “tool information table 113” of the storage unit 115 is updated (step S312). Here, for example, the tool angle is an angle formed by a “vector in the horizontal direction” and a “vector determined from two points”, and is calculated using the cosine theorem. Next, the “data set completion flag” of the tool information update data unit 108 is turned off (step S313). As a result, it is possible to notify the interpolation processing unit 106 that the next tool information update data unit 108 can be accepted. Finally, the current tool number is set in the “tool number memo 114” in the storage unit 115 (step S314), and the previously calculated tool inclination angle and the like are displayed on the display unit 117 (step S315). The information (tool number (T _n ), tool angle (θ _n )) of the tool information table 113 in FIG. 5 is displayed on the display unit 117, and the process ends.

  The user obtains information on the inclination angle of the tool displayed on the display unit 117, and when the tool is not attached at a desired angle, the user again adjusts the angle of the tool attached to the inclination holder. Then, in the same manner as described above, it is possible to attach the tool angle adjustment to a desired angle with high accuracy by obtaining information on the tilt angle of the tool by the NC device. In addition, by using a lathe in which the angle of the tool is adjusted with high accuracy in this way, it is possible to perform highly accurate tilting.

  As described above, according to the NC device according to the present embodiment, information on the tilt angle of the tool attached to the tilt holder is calculated and notified, so that the tool can be accurately set to the “tilt holder” at a desired angle. It can be attached. In addition, by using a lathe in which the angle of the tool is adjusted with high accuracy in this way, it is possible to perform highly accurate tilting. Thereby, even in a simple lathe, the inclined surface can be processed with high accuracy. In particular, when combined with the “program coordinate rotation” function, the inclined surface machining becomes easy.

Embodiment 2. FIG.
In Embodiment 1 described above, the case of using a contact-type sensor has been described, but the present invention is not limited to this. That is, the present invention can be applied to a form using a non-contact type sensor in addition to the embodiment using the contact type sensor as described above.

  Even when the present invention is applied to a form using a non-contact type sensor, the information (machine coordinates and approach direction) at the time of sensor signal input is used in the tilt holder as in the case of the first embodiment. Information on the tilt angle of the attached tool is calculated and notified, and the tool can be attached to the “tilt holder” at a desired angle with high accuracy. In addition, by using a lathe in which the angle of the tool is adjusted with high accuracy in this way, it is possible to perform highly accurate tilting. Thereby, even in a simple lathe, the inclined surface can be processed with high accuracy. In particular, when combined with the “program coordinate rotation” function, the inclined surface machining becomes easy.

  As described above, the numerical control device according to the present invention is useful for a numerical control device that controls a processing machine that manually adjusts the inclination angle of a tool to be attached.

It is a schematic diagram for demonstrating the concept of the tool angle measurement in the numerical control apparatus concerning Embodiment 1 of this invention, and is a figure which shows the positional relationship of the drilling drill and sensor which were attached to the tool post using the inclination holder. It is. It is a figure which shows the state which mounted | wore the inclination holder with the drilling drill. It is a figure for demonstrating the tool reference line in Embodiment 1 of this invention. It is a figure for demonstrating the main schematic structures of NC apparatus concerning Embodiment 1 of this invention. It is a figure for demonstrating the data flow of the NC apparatus concerning Embodiment 1 of this invention. It is a flowchart for demonstrating the processing flow of the servo communication process concerning Embodiment 1 of this invention. It is a figure for demonstrating "approach direction bit" of a sensor input data part. It is a flowchart for demonstrating the processing flow of the interpolation process part concerning Embodiment 1 of this invention. It is a flowchart for demonstrating the processing flow of the interpolation process part concerning Embodiment 1 of this invention. It is a flowchart for demonstrating the processing flow of the tool information update process part concerning Embodiment 1 of this invention. It is a flowchart for demonstrating the processing flow of the tool information update process part concerning Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Inclination holder 12 Processing drill 13 Tool post 14 Tool shape measurement sensor 101 Servo communication processing part 102 Movement amount per unit time 103 Servo 104 Sensor 105 Sensor input data part 105a Sensor input flag 105b Sensor input coordinate 105c Approach direction bit
106 Interpolation processing section 107 Manual movement speed 108 Tool information update data section 108a Data set completion flag 108b Read coordinates 109 Escape amount 110 Tool information update processing section 111 Coordinate data section 112 Selected tool number 113 Tool information table 114 Tool number memo 115 Storage Unit 116 Control Unit 117 Display Unit

Claims (3)

It is a numerical control device that controls a processing device that can be processed with the tool tilted and attached,
Communication processing means for storing machine coordinates at the time when a signal from an externally connected sensor is input;
Tool inclination angle calculating means for calculating an inclination angle of the tool based on a plurality of machine coordinates stored in the communication processing means;
Display means for displaying the inclination angle of the tool;
A numerical control device comprising: The communication processing means outputs a movement control command for the tool based on a movement amount per unit time of the tool, and when a signal indicating that the sensor has touched the tool is input, The numerical control device according to claim 1, wherein output of a movement control command is stopped and control of the tool is stopped. Tool information storage means for storing angle information of the tool being mounted is provided, and the tool information storage means updates the stored angle information of the tool based on the inclination angle calculated by the tool inclination angle calculation means. The numerical control apparatus according to claim 1.

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