JP2017091429A - NC program creation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an NC program creation device enabling an operator to set an indexing angle of a rotary feed shaft.SOLUTION: A display control part 8 displays, in a display 10, an image in which a three-dimensional model of a workpiece is arranged in a space with coordinate axes along three linear feed shafts, and rotates the displayed image around a rotary feed shaft according to an image rotation signal inputted from a signal input part 9. A machining process setting part 5, when receiving an indexing angle determination signal from the signal input part 9, obtains a rotation angle around the rotary feed shaft, in the image displayed in the display 10, from the display control part 8, sets the obtained rotation angle to an indexing angle of the rotary feed shaft, sets machining regions for a three-dimensional model at the indexing angle, and then sets machining processes for the machining regions. A tool path generation part 6 generates tool paths along the three linear feed shafts for a machining region for each of the set machining processes. A program creation part 7 creates an NC program on the basis of the tools paths or the like.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an apparatus for creating an NC program used for controlling an NC machine tool.

  Conventionally, as the NC program creation device described above, a device comprising a CAD / CAM and a post processor is known. The CAM generates a tool path for the machining area while appropriately setting the machining area for the three-dimensional model based on the three-dimensional model of the machined product created by the CAD. The NC program is generated based on the tool path generated by, the machine configuration information (kinematic) specific to the NC machine tool used, the peripheral device control command method, and the like.

  By the way, as this NC machine tool, conventionally, as a feed axis for relatively moving a tool and a workpiece, only three linear feed axes (three orthogonal feed axes) orthogonal to each other are provided. Some of them have a typical structure, but at present, in addition to these three orthogonal axes, those having at least one rotary feed shaft are becoming common.

  Among such NC machine tools, in the case of an apparatus for creating an NC program for an NC machine tool having only the above-mentioned orthogonal three-axis feed axes, the operator of the NC program creation apparatus creates the NC program to be created. Therefore, it is possible to easily imagine what kind of processing is performed, and therefore, it is possible to relatively easily perform necessary settings in the NC program creation device.

  On the other hand, in the case of a machine that creates an NC program for an NC machine tool equipped with a rotary feed axis, in order to create an NC program for operating all the feed axes at the same time, the operator Since it is necessary to make appropriate settings according to the machine information such as the positional relationship between the rotary feed axis and the three orthogonal feed axes, the operator has deep experience and specialized knowledge. There was a problem that it was needed.

  Therefore, conventionally, as disclosed in Japanese Patent Application Laid-Open No. 2002-304203 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2014-75000 (Patent Document 2), the rotary feed shaft is pre-indexed and set in this state. A machining method is proposed in which machining is performed by simultaneously operating three orthogonal feed axes in a machining area, and an NC program creation device for generating an NC program for executing such a machining method is proposed. Yes. According to such an NC program creation device, an NC program can be created with settings similar to those of an NC machine tool having only three orthogonal feed axes, so that an operator can make necessary settings relatively easily. Can be performed. Conventionally, such a machining method is referred to as indexing 4-axis machining when, for example, the feed axis is 4 axes, and is called indexing 5-axis machining when the feed axis is 5 axes. .

JP 2002-304203 A JP 2014-75000 A

  However, in the NC program creation devices disclosed in Patent Document 1 and Patent Document 2, since the index of the rotary feed axis is performed in a virtual space on the CAM screen, the operator can operate on the processing machine. It is not possible to easily imagine how the workpiece will be processed in a state where the workpiece is rotated. For this reason, it is possible to concretely imagine what kind of processing will be performed in the generated NC program. There was a problem that I could not. In addition, from such a background, when the operator actually performs machining using the created NC program, there is a problem that the operation becomes too careful and the operation efficiency becomes too low, and the work efficiency becomes low. Was also caused.

  Further, if the rotary feed shaft is automatically indexed, the development cost for realizing the complicated processing becomes high, so that the cost of the NC program creation device itself becomes expensive. there were.

  On the other hand, as described above, in the conventional NC program creation device, it is difficult for the operator to set the index of the rotary feed axis, and it is difficult to set the rotary feed axis. If the operator can arbitrarily set the feed angle, it may be possible to perform appropriate and efficient machining according to the processed product. By enabling such setting, the advantage of widening machining flexibility There is also.

  The present invention has been made in view of the above circumstances, and an NC program that allows an operator to set an indexing angle of a rotary feed shaft and easily imagine machining performed by the NC program. The purpose is to provide a creation device.

To achieve the above object, the present invention provides:
An apparatus for creating an NC program for controlling a machine tool having three linear feed axes orthogonal to each other and at least one rotary feed axis, which relatively moves a tool and a workpiece,
A model data storage unit for storing data relating to at least a three-dimensional model of the workpiece;
A machining condition storage unit for storing information on the machining conditions;
A machine information storage unit for storing information on at least each of the feed axes of the machine tool;
A machining step setting unit that sets a plurality of machining regions for the three-dimensional model of the workpiece and sets a machining step to which the machining conditions stored in the machining condition storage unit are applied for each set machining region When,
A tool path generation unit that generates a tool path for each processing region of each processing step set by the processing step setting unit;
A display capable of displaying images;
A display control unit for displaying an image of a three-dimensional model of the processing object on the display;
A program generation unit that generates an NC program based on information related to the machining process set by the machining process setting unit, a tool path generated by the tool path generation unit, and information stored in the machine information storage unit In an NC program creation device comprising
An image rotation signal for rotating an image displayed on the display around the rotation feed axis is input to the display control unit, and further includes a signal input unit for inputting an index angle determination signal to the processing step setting unit,
The display control unit displays an image in which a three-dimensional model of the object to be processed is arranged in a three-dimensional space formed by coordinate axes along the three linear feed axes on the display, and from the signal input unit. An image obtained by rotating a three-dimensional model of the object to be processed around the rotation feed axis in accordance with an input image rotation signal is displayed on the display.
The processing step setting unit is configured to set the processing step when receiving an index angle determination signal from the signal input unit, and when receiving the index angle determination signal, the processing displayed on the display According to the three-dimensional model of the object, the rotation angle around the rotation feed shaft is acquired from the display control unit, the acquired rotation angle is set as the index angle of the rotation feed shaft, and the set index angle is set. A machining area is set for a three-dimensional model of a certain workpiece, and the machining area is configured to set a machining process to which machining conditions stored in the machining condition storage unit are applied.
The tool path generation unit includes an NC program generation device configured to generate a tool path according to the three linear feed axes for each machining region of each machining process set by the machining process setting unit. Related.

  According to this NC program creation device, first, based on the data related to the three-dimensional model of the workpiece to be stored stored in the model data storage unit and the information on each feed axis stored in the machine information storage unit The display control unit displays an image in which a three-dimensional model of the object to be processed is arranged in a three-dimensional space formed by coordinate axes along the three linear feed axes on the display.

  As described above, the coordinate axis is along the three linear feed axes, and the three-dimensional image of the processing object displayed on the display is, for example, a table of the machine tool. It is the image of the state attached to the jig. In this way, by displaying the three-dimensional image of the processing object while attached to the machine tool, the operator can easily imagine the posture of the processing object during actual processing. In addition, the table and the jig do not necessarily have to be displayed on the display together with the object to be processed, but by displaying such a table and the jig, the operator can perform the actual processing. It becomes possible to image easily.

  When the operator inputs the image rotation signal from the signal input unit, the display control unit rotates the three-dimensional image of the workpiece displayed on the display according to the input image rotation signal. Rotate around the feed axis. In other words, the operator inputs the image rotation signal from the signal input unit, so that the three-dimensional image of the processing object displayed on the display is placed at an arbitrary rotation angle position according to the rotation feed axis of the machine tool. Can be rotated.

  When the processing object is at a desired rotation angle position and the operator inputs an index angle determination signal from the signal input unit, the processing process setting unit displays the processing object displayed on the display. The rotation angle around the rotation feed shaft is acquired from the display control unit, and the machining process setting unit sets the acquired rotation angle as the index angle of the rotation feed shaft and is at the set index angle. A machining area is set for the three-dimensional model of the workpiece, and a machining process to which the machining conditions stored in the machining condition storage unit are applied is set for the set machining area. Regarding the setting of the processing area, the operator may set (select) the area from a three-dimensional image of the processing object displayed on the display.

  Thus, the operator inputs an image rotation signal from the signal input unit, thereby appropriately rotating the three-dimensional image of the workpiece displayed on the display according to the rotation feed axis of the machine tool, and in this way. By inputting an index angle determination signal from the signal input unit at an appropriate rotation angle position where the workpiece is rotated, a processing region can be appropriately set for the workpiece at the rotation angle position. In addition, by repeating the same operation, it is possible to set the machining process for all the machining areas to be set on the workpiece.

  When machining steps are set for all machining regions by the machining step setting unit in this way, a two-pass is generated for each machining region by the tool path generation unit, and then a tool is created for all machining regions. When a path is generated, a program is created based on the information related to the machining process set by the machining process setting unit, the tool path generated by the tool path generation unit, and the information stored in the machine information storage unit. An NC program is generated by the generation unit.

  Thus, according to the NC program creation device according to the present invention, the NC program can be created in a state where the operator has determined the rotation angle of the workpiece to an arbitrary angle. It is possible to easily imagine how machining is performed in a state in which the machine is rotated, so that the operator can perform work efficiently when machining is actually performed using the created NC program. it can.

  In addition, since the operator can determine the index angle of the workpiece while looking at the rotation posture of the workpiece displayed on the display, the operator can perform the indexing without requiring special knowledge. It is possible to perform work, and by setting the index angle by the operator, it is possible to realize appropriate and efficient machining according to the processed product, and to realize machining with a high degree of freedom. it can.

  Further, by setting the index angle by the operator, a complicated processing step as in the prior art is not required, so that the apparatus can be configured with a relatively simple configuration. The manufacturing cost of the creation device can be kept low.

  In the present invention, the machining process setting unit may be configured to display the generated machining process list on the display via the display control unit. In this way, the operator can easily understand the contents of the machining process, and can easily imagine actual machining in each machining process.

  In the present invention, the model data storage unit is configured to store data related to a three-dimensional model of the machine tool, and the display control unit is configured of coordinate axes along the three linear feed axes. An image in which a three-dimensional model of the workpiece and a three-dimensional model of the machine tool are arranged in a space to be displayed may be displayed on the display. In this way, the operator can more easily imagine the actual processing.

  Further, in the present invention, the machining process setting unit may cause a machining residue in a machining area set in each machining process due to, for example, a part in which a tool cannot enter due to an overhang of a machining shape. May be configured to display, through the display control unit, a part to be processed remaining in an image of the processing object displayed on the display in a manner that can be distinguished from other parts. . In this way, it is possible to make the operator recognize that there is a machining residue, and to prompt the operator to modify the corresponding machining process, that is, to correct the index angle in the machining process.

  In the present invention, the signal input unit has a model in which the machine tool and the workpiece are miniaturized, and the model has a rotation part that rotates around the rotation feed shaft and a rotation angle of the rotation part. An angle detection unit for detection may be provided, and a rotation angle detected by the angle detection unit may be input to the display control unit as an image rotation signal.

  If comprised in this way, it can be set as the structure which linked the model which reduced the actual machine tool and the process target object, and the image displayed on a display. Therefore, the operator can rotate the image of the processing object displayed on the display by operating the model, and the operator can more realistically recognize the processing process to be created.

  In the present invention, the signal input unit may further be configured to input the rotation angle detected by the angle detection unit to the machining process setting unit as the index angle determination signal. With this configuration, it is possible to determine the index angle in each machining step while operating a model in which an actual machine tool and a workpiece are miniaturized. It is possible to more realistically recognize the machining process being performed.

  As described above, according to the NC program creation device according to the present invention, a three-dimensional image of a workpiece can be displayed in a state attached to a machine tool. Can be easily imaged.

  In addition, since the NC program can be created with the operator indexing the rotation angle of the workpiece, the operator can easily determine how the workpiece is rotated. Therefore, the operator can efficiently perform work when actually performing machining using the created NC program.

  In addition, the operator can determine the index angle of the workpiece while looking at the rotation posture of the workpiece displayed on the display, so that the operator can perform the indexing operation without requiring specialized knowledge. In addition, by setting the indexing angle by the operator, it is possible to realize appropriate and efficient machining according to the processed product, and to realize machining with a high degree of freedom. .

  In addition, since the operator can set the indexing angle, a complicated processing step as in the prior art is not required, so that the apparatus can be configured with a relatively simple configuration. The manufacturing cost of the apparatus can be kept low.

1 is a perspective view showing a machine tool according to an embodiment of the present invention. It is the block diagram which showed schematic structure of the NC program creation apparatus which concerns on one Embodiment of this invention. It is explanatory drawing which showed the processing process table | surface in this embodiment. It is explanatory drawing which showed the image displayed on the display of this embodiment. It is explanatory drawing which showed the image displayed on the display of this embodiment. It is the perspective view which showed the input part which concerns on other embodiment. It is the side view which showed the input part shown in FIG. 6 in the partial cross section.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a machine tool according to the present embodiment, and FIG. 2 is a block diagram showing an NC program creating device according to the present embodiment.

[Outline of machine tool]
First, a schematic configuration of a machine tool as an example of a control target will be described with reference to FIG. As shown in FIG. 1, the machine tool 50 of this example includes a bed 51, a first saddle 56 and a table mechanism 60 disposed on the bed 51, a second saddle 57 disposed on the first saddle 56, The main spindle 58 is disposed on the second saddle 57.

  The bed 51 includes a base 52 formed in a rectangular shape in plan view, two side walls 53 and 54 erected so as to face the left and right sides of the base 52, and a rear side of the base 52. The rear wall 55 is provided between the side walls 53 and 54 so as to be connected thereto.

  The first saddle 56 is a frame having a rectangular shape when viewed from above, and is disposed on the side walls 53 and 54 of the bed 51 so as to be stretched over the side walls 53 and 54. The Y-axis guide mechanisms 70 and 71 that are arranged are movable in the Y-axis direction, which is a horizontal front-rear direction, and are similarly arranged on the upper surfaces of the side walls 53 and 54. It is driven by 73 and moves in the Y-axis direction.

  The second saddle 57 is disposed so as to pass through the frame of the first saddle 56, and is provided on both sides along the arrow X-axis of the first saddle 56, respectively. 75 and 76, which can move in the horizontal X-axis direction perpendicular to the Y-axis, and is driven by the X-axis drive mechanism 77 disposed in the second saddle 57 to move in the X-axis direction. To do.

  The spindle head 58 is movable in the Z-axis direction indicated by an arrow perpendicular to the X-axis and the Y-axis by a Z-axis guide mechanism (not shown) disposed on the second saddle 57. It is held by the saddle 57 and is driven by Z-axis drive mechanisms 80 and 81 provided on both sides thereof to move in the Z-axis direction. The spindle head 58 is provided with a spindle 59 so as to extend downward from its lower end, and a tool T is attached to the lower end of the spindle 59. The main shaft 59 is held by the main shaft head 58 so as to be rotatable about the axis thereof, and is rotated about the axis by a main shaft motor (not shown).

  The table mechanism 60 includes a table base 61 having an L shape when viewed from the left side, and a table 64 provided on a horizontal portion 62 of the table base 61. The table base 61 has a vertical portion 63 held on the rear wall 55 of the bed 51 so as to be rotatable about the rotation axis parallel to the Y axis in the direction of the arrow B axis and is driven by a turning drive mechanism (not shown). And rotate in the B-axis direction.

  A table 64 is disposed on the horizontal portion 62 of the table base 61, and is held by the horizontal portion 62 so as to be rotatable in the direction of the arrow C axis about a vertical axis orthogonal to the upper surface of the table 64. It is driven by a rotation drive mechanism (not shown) and rotates in the C-axis direction.

  The X-axis drive mechanism 77, Y-axis drive mechanisms 72 and 73, and Z-axis drive mechanisms 80 and 81, a turning drive mechanism (not shown), a rotation drive mechanism (not shown), and a spindle motor (not shown). The operation of each is controlled by a numerical control device (not shown), and a numerical control device (not shown) performs this control according to an NC program as appropriate.

  Thus, in this machine tool 1, the tool T mounted on the spindle 59 and the work placed and fixed on the table 64 under the control of a numerical control device (not shown) according to the NC program. Are moved in the X-axis, Y-axis, and Z-axis directions, which are three orthogonal feed axes, by the X-axis drive mechanism 77, the Y-axis drive mechanisms 72, 73, and the Z-axis drive mechanisms 80, 81. The table 64 is driven by the turning drive mechanism (not shown) to turn in the B-axis direction which is a rotation feed shaft, and is driven by the rotation drive mechanism (not shown) to rotate. It rotates in the C-axis direction that is the feed axis.

  The X-axis drive mechanism 77, the Y-axis drive mechanisms 72 and 73, the Z-axis drive mechanisms 80 and 81, the turning drive mechanism (not shown), and the rotation drive mechanism (not shown) are attached to the main shaft 59. The work on the table 64 is moved to the tool T by moving the tool T and the work placed and fixed on the table 64 relatively to the X axis, Y axis, Z axis, B axis and C axis. Is processed.

[NC program creation device]
As shown in FIG. 2, the NC program creation device 1 of this example includes a model data storage unit 2, a machining condition storage unit 3, a machine information storage unit 4, a machining process setting unit 5, a tool path generation unit 6, and a program generation unit. 7, the display control part 8, the input part 9, and the display 10 are provided.

  The model data storage unit 2 is a functional unit that stores data related to a processed product that is a workpiece W and a three-dimensional model of the machine tool 50, and these three-dimensional model data are stored in advance as appropriate external CAD. Created and stored by the system. In this example, as the three-dimensional model of the machine tool 50, the table base 61 and the table 64, and the three-dimensional model of the spindle 59 and the tool T are stored in the model data storage unit 2.

  The machining condition storage unit 3 is a functional unit that stores machining conditions such as an appropriate cutting speed, feed amount, and cutting amount according to the tool material and the material of the workpiece, and the machining conditions are input in advance from the outside. And stored in the processing condition storage unit 3.

  The machine information storage unit 4 includes information on the machine tool 50, for example, the maximum rotation speed and the maximum feed speed of the spindle 59, and a feed axis configuration (the X axis, Y axis, Z axis, B axis, and C axis). , Information relating to the kinematics of the machine tool 50 such as a rotatable angle range and a minimum indexing angle of the rotary feed shaft (B axis and C axis), and information relating to the tool T, for example, a tool to be used This is a functional unit that stores information such as the shape and size of T and the shape and size of the tool holder. These pieces of information are input from the outside in advance and stored in the machine information storage unit 4.

  The display 10 is a device that can display an image, such as a liquid crystal panel, and the display control unit 8 controls the image display.

  The display control unit 8 generates these three-dimensional images based on the three-dimensional model data of the workpiece W and the machine tool 50 stored in the model data storage unit 2 and displays them on the display 10. 3D which is a functional unit and is configured by coordinate axes along the three orthogonal axes (X axis, Y axis and Z axis) of the machine tool 50 with reference to the information stored in the machine information storage unit 4 A three-dimensional image in which a three-dimensional model of the workpiece W and the machine tool 50 is arranged in the space is generated and displayed on the display 10.

  An example of the image displayed in this way is shown in FIG. Note that the lead lines, center lines, black circles, symbols, etc. in the figure do not constitute an image. B1 indicates the rotation center of the B-axis that is the rotation feed shaft, and C1 indicates the rotation center of the C-axis that is the rotation feed shaft. Moreover, the workpiece W of this example is a modeled object that simulates the shape of a rabbit.

  In addition, the display control unit 8 sends the three-dimensional model of the workpiece W, the table base 61 and the table 64 to the rotary feed shaft (in accordance with an image rotation signal input from the input unit 9 described later in detail. A three-dimensional image rotated around the B axis and the C axis is generated and displayed on the display 10.

  The input unit 9 includes input devices such as a mouse and a keyboard. For example, an operator rotates an image displayed on the display 10 around the rotation feed axis (B axis, C axis). A rotation signal can be input to the display control unit 8 through the mouse, and similarly, an index angle determination signal (to be described later) is input to the machining process setting unit 5 through the mouse. Can do.

  An example of the image thus rotated is shown in FIG. Note that FIG. 5 is an image obtained by rotating FIG. 4 in the direction of the B-axis that is the rotation feed shaft. Like FIG.

  The machining process setting unit 5 sets a plurality of machining regions for the three-dimensional model of the workpiece W based on the three-dimensional model of the workpiece W stored in the model data storage unit 2. In addition, it is a functional unit that sets a machining process to which the machining conditions stored in the machining condition storage unit 3 are applied for each set machining region.

  Specifically, the machining process setting unit 5 first arranges a machining process table as shown in FIG. 3 on the image of the workpiece W and the machine tool 50 described above via the display control unit 8. It is displayed on the display 10. Then, the operator uses the mouse and the keyboard to sequentially provide information as appropriate in the blank space of the displayed machining process table. For example, the operator enters “Stanford Bernie” in the file name field, and then program No. Enter "1234" in the field.

  Next, the operator sets the machining process number. After entering “Right ear in / Rough” in the 001 process name field, the machine display is checked (the color in the square frame is reversed from white to black by checking), After the image rotation signal is input to the display control unit 8 using the mouse of the input unit 9 and, for example, the image is rotated in the B-axis direction from the state of FIG. 4 to the state of FIG. When the index angle determination signal is input to the machining process setting unit 5 by, for example, right-clicking using the mouse, the machining process setting unit 5 is displayed on the display 10 from the display control unit 8. Further, the rotation angle of each rotary feed shaft (B axis and C axis) related to the three-dimensional model of the workpiece W is acquired, and the acquired rotation angle is indexed to each rotary feed shaft (B axis and C axis). The angle is set and the angle is displayed in the process chart. To. In the example shown in FIG. In the “001 right inner / rough” process of 001, the B axis is 80 degrees and the C axis is −37 degrees.

  Next, when the operator uses a mouse or the like to point a pointer or the like to the image of the workpiece W displayed on the display 10 and designate a machining area to be performed in the machining process, the designation is performed by the machining process setting unit 5. Recognized, the machining process setting unit 5 obtains the area data designated as the machining area in the three-dimensional model of the workpiece W displayed on the display 10 from the display control unit 8, and obtains the obtained area data. Based on the processing area specified for the three-dimensional model of the processing object W, the processing area column of the machining process table displayed on the display 10 via the display control unit 8 is set. Invert the color in the square frame from white to black. When the processing area is specified on the image of the processing target W displayed on the display 10, the display control unit 8 displays the corresponding part in the lower part, for example, by coloring the specified area. Make the display different from the display. In FIG. 5, the selected area “inside the right ear” is hatched. By changing the display in this way, the operator can easily recognize the area selected by the operator.

  Then, after setting the machining area, the operator inputs whether the machining area is to be subjected to scanning line machining or contour line machining in the column of the cycle name, and this is recognized by the machining process setting unit 5 and processed. The process setting unit 5 sets the processing method for the corresponding processing region to the specified processing method, and based on the processing conditions stored in the processing condition storage unit 3, the processing conditions for the processing region, For example, the rotation speed and feed speed of the tool T are set.

  Thereafter, in the same manner, the operator performs 1) an operation for inputting in the column of the process name in the machining process table, and 2) using the mouse to rotate the image of the workpiece W displayed on the display 10 for indexing. Operation to set the angle, 3) Operation to select the machining area using the mouse, and 4) Operation to select the machining method in the cycle name column of the machining process table are sequentially repeated to perform each selected machining For the area, the machining process setting unit 5 sets the machining process. And after such operation is performed and the process target is set about all the area | regions where the process should be performed about the process target object W, the process process setting part 5 complete | finishes the process.

  The tool path generation unit 6 is a functional unit that sequentially generates a tool path for each processing region for each processing step set by the processing step setting unit 5. The tool path is generated according to scanning line processing and contour line processing, and is generated according to the three linear feed axes (X axis, Y axis, Z axis) for each processing region of each processing step.

  Further, the program generation unit 7 is stored in the information related to the machining process set by the machining process setting unit 5, the tool path data generated by the tool path generation unit 6, and the machine information storage unit 4. It is a functional unit that generates an NC program applicable to the machine tool 50 based on the information.

  According to the NC program creation device 1 of the present example having the above-described configuration, first, data relating to the workpiece W and the three-dimensional model of the machine tool 50 stored in the model data storage unit 2, and the machine information Based on the information about each feed axis (X axis, Y axis, Z axis, B axis, and C axis) stored in the storage unit 4, the display control unit 8 controls the X axis, Y axis, and Z axis 3 An image in which a three-dimensional model of the workpiece W and the machine tool 50 is arranged in a three-dimensional space composed of coordinate axes along two linear feed axes is displayed on the display 10. In addition, the machining process table is displayed on the display 10 along with the image by the machining process setting unit 5 via the display control unit 8.

  The coordinate axes are along the X axis, the Y axis, and the Z axis, which are three linear feed axes, and the three-dimensional image of the workpiece W displayed on the display 10 actually indicates the workpiece W. It is an image of the state attached to the table 64 of the machine tool 50. FIG. Thus, by displaying the three-dimensional image of the workpiece W while being attached to the machine tool 50 in this manner, the operator can easily imagine the posture of the workpiece W during actual machining. be able to. Further, the image of the table 64 and the table base 61 is not necessarily displayed on the display together with the processing object W. However, by displaying the table 64 and the table base 61, the operator actually It is possible to easily imagine the processing to be performed.

  Then, an operation for an operator to input to the machining process table displayed on the display 10, an operation for setting an index angle by rotating the image of the workpiece W displayed on the display 10 using the mouse, Similarly, by performing an operation for selecting a processing region and an operation for selecting a processing method using the mouse for each processing step, a specific processing step is set by the processing step setting unit 5.

  When machining steps are set for all machining regions by the machining step setting unit 5 in this way, the tool path generation unit 6 generates two passes for each machining region, and then all machining regions. When a tool path is generated, information on the machining process set by the machining process setting unit 5, a tool path generated by the tool path generation unit 6, and information stored in the machine information storage unit 4 Based on the above, an NC program is generated by the program generation unit 7.

  Thus, according to the NC program creation device 1 of the present example, the NC program in a state where the operator has calculated the rotation angle of each rotation feed axis (B axis, C axis) of the workpiece W to an arbitrary angle. Therefore, the operator can easily imagine how the workpiece W is rotated and the machining is performed. For this reason, the operator can actually use the created NC program. Therefore, the work can be performed efficiently.

  In addition, the operator can determine the indexing angle of each workpiece W on each rotation feed axis (B axis, C axis) while viewing the rotational posture of the workpiece W displayed on the display 10. The operator can perform the indexing operation without requiring specialized knowledge, and the operator can set the indexing angle to realize appropriate and efficient machining according to the workpiece W. It is possible to realize machining with a high degree of freedom.

  In addition, since the operator can set an indexing angle, a complicated processing step as in the prior art becomes unnecessary, and thus the NC program creation device 1 can be a device with a relatively simple configuration. The manufacturing cost can be kept low.

  In the NC program creation device 1 of this example, the machining process setting unit 5 displays the machining process table (list) on the display 10 via the display control unit 8, so that the operator can process the machining process. Can be easily understood, and the actual processing in each processing step can be easily imaged.

  As mentioned above, although one Embodiment of this invention was described, the specific aspect which this invention can take is not limited to this at all.

  For example, in the above example, the operator designates the machining area of each machining process. However, the present invention is not limited to this, and the machining area is automatically set by the machining process setting unit 5. May be.

  Further, in the above example, the machining process setting unit 5 may cause the machining residue to occur in the set machining area, for example, due to a part that the tool cannot enter due to an overhang of the machining shape. Via the display control part 8, you may be comprised so that the site | part which becomes this process remaining among the images of the process target object W displayed on the said display 10 may be displayed in the aspect which can be distinguished from another site | part. . In this way, the operator can easily recognize that there is a machining residue, so that the operator can appropriately correct the corresponding machining process, that is, the index angle in the machining process. it can.

  Further, the NC program creation device 1 of the present example is configured to create an NC program corresponding to the machine tool 50 having two rotary feed axes (B axis and C axis), but is limited to this. Instead, it can be an NC program creation device directed to a machine tool having one axis or three or more rotary feed axes.

  The input unit 9 may include the signal input device shown in FIGS. 6 and 7 as a device for inputting the image rotation signal. As shown in FIGS. 6 and 7, the signal input device 100 includes a model part in which the table base 61, the table 64, and the workpiece W are downsized, and an L-shaped support bracket 101 that supports the model part. And.

  The model portion includes a table base portion 61 ′ corresponding to the table base 61, a table portion 64 ′ corresponding to the table 64, and a processing object portion W ′ corresponding to the processing object W. Further, the vertical portion 63 ′ of the table base portion 61 ′ is held by the vertical portion 102 of the support bracket 101 so as to be rotatable in the B′-axis direction corresponding to the B-axis, and the rotation angle in the B′-axis direction. Is detected by the encoder 104, the detected rotation angle signal is input to the display control unit 8 as an image rotation signal, and the processing step is performed as an index angle determination signal by a determination signal input from the mouse or keyboard. It is input to the setting unit 5.

  The table portion 64 ′ is held by the horizontal portion 62 ′ of the table base portion 61 ′ so as to be rotatable in the C′-axis direction corresponding to the C-axis. The rotation angle in the C′-axis direction is an encoder. The detected rotation angle signal is input to the display control unit 8 as an image rotation signal, and the processing step setting is set as an index angle determination signal by a determination signal input from the mouse or keyboard. Input to part 5.

  If comprised in this way, it may be set as the structure which linked the table base part 61 and table part 64 of the actual machine tool 50, and the model part which reduced the workpiece W, and the image displayed on the display 10. FIG. it can. Therefore, the operator can rotate the image of the workpiece W displayed on the display 10 by operating the model portion, and can determine the index angle in each machining step. It is possible to more realistically recognize the machining process to be created.

DESCRIPTION OF SYMBOLS 1 NC program creation apparatus 2 Model data storage part 3 Machining condition storage part 4 Machine information storage part 5 Machining process setting part 6 Tool path generation part 7 Program generation part 8 Display control part 9 Input part 10 Display 50 Machine tool 59 Spindle 60 Table Mechanism 61 Table base 64 Table T Tool W Work target

Claims (6)

An apparatus for creating an NC program for controlling a machine tool having three linear feed axes orthogonal to each other and at least one rotary feed axis, which relatively moves a tool and a workpiece,
A model data storage unit for storing data relating to at least a three-dimensional model of the workpiece;
A machining condition storage unit for storing information on the machining conditions;
A machine information storage unit for storing information on at least each of the feed axes of the machine tool;
A machining step setting unit that sets a plurality of machining regions for the three-dimensional model of the workpiece and sets a machining step to which the machining conditions stored in the machining condition storage unit are applied for each set machining region When,
A tool path generation unit that generates a tool path for each processing region of each processing step set by the processing step setting unit;
A display capable of displaying images;
A display control unit for displaying an image of a three-dimensional model of the processing object on the display;
A program generation unit that generates an NC program based on information related to the machining process set by the machining process setting unit, a tool path generated by the tool path generation unit, and information stored in the machine information storage unit In an NC program creation device comprising
An image rotation signal for rotating an image displayed on the display around the rotation feed axis is input to the display control unit, and further includes a signal input unit for inputting an index angle determination signal to the processing step setting unit,
The display control unit displays an image in which a three-dimensional model of the object to be processed is arranged in a three-dimensional space formed by coordinate axes along the three linear feed axes on the display, and from the signal input unit. An image obtained by rotating a three-dimensional model of the object to be processed around the rotation feed axis in accordance with an input image rotation signal is displayed on the display.
The processing step setting unit is configured to set the processing step when receiving an index angle determination signal from the signal input unit, and when receiving the index angle determination signal, the processing displayed on the display According to the three-dimensional model of the object, the rotation angle around the rotation feed shaft is acquired from the display control unit, the acquired rotation angle is set as the index angle of the rotation feed shaft, and the set index angle is set. A machining area is set for a three-dimensional model of a certain workpiece, and the machining area is configured to set a machining process to which machining conditions stored in the machining condition storage unit are applied.
The tool path generation unit is configured to generate a tool path according to the three linear feed axes for each machining area of each machining process set by the machining process setting unit. NC program creation device.   2. The NC program creation device according to claim 1, wherein the machining process setting unit is configured to display the generated machining process list on the display via the display control unit. The model data storage unit is configured to store data relating to a three-dimensional model of the machine tool,
The display control unit displays on the display an image in which a three-dimensional model of the workpiece and a three-dimensional model of the machine tool are arranged in a space formed by coordinate axes along the three linear feed axes. 3. The NC program creation device according to claim 1, wherein the NC program creation device is configured as described above.   When the machining process setting unit generates a machining residue in the machining area set in each machining process, the machining process setting unit includes the machining residue and the machining residue image displayed on the display via the display control unit. 4. The NC program creation device according to claim 1, wherein the part is displayed in a manner distinguishable from other parts. 5.   The signal input unit includes a model in which the machine tool and the workpiece are miniaturized, and the model includes a rotation part that rotates around the rotation feed shaft and an angle detection unit that detects a rotation angle of the rotation part. 5. The NC program according to claim 1, wherein the NC program is configured to input a rotation angle detected by the angle detection unit to the display control unit as an image rotation signal. Creation device. The said signal input part is further comprised so that the rotation angle detected by the said angle detection part may be input into the said process setting part as the said index angle determination signal. NC program creation device.

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