JP2004009293A - Machining suitability check method for machine tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform a machining suitability check for a machine tool automatically, properly and efficiently without relying on a visual check by a worker. <P>SOLUTION: A three-dimensional shape of a machining material W is measured by a three-dimensional measuring device 45 to acquire a machining material shape data, and product shape data defining the three-dimensional shape of a machined work are acquired. Whether a difference between the machining material shape data and the product shape data is larger than a standard cutting allowance stipulated in advance is determined by an arithmetic process by an arithmetic processing means. When the difference is larger, instruction is made to change a machining program. <P>COPYRIGHT: (C)2004,JPO

Description

{Circle over (1)} The present invention relates to a method for checking the suitability of machining for machine tools such as NC machine tools.

A machining program is executed by an NC device or the like, and a work table on which a machining material is installed and a spindle head are relatively moved in a machine coordinate axis direction by a feed command obtained by executing the machining program, and a machining tool mounted on the spindle head. A machine tool such as a machining center for automatically processing the above-mentioned processing material is known.

In this type of machine tool, especially in a large-sized machine tool, in order to prevent breakage of the machine tool and to protect the work material, in the process of relative movement between the spindle head and the work table by a feed command, a processing tool, It is preferable to check whether there is interference (collision) between the spindle head on which the tool holder is mounted and the work material before processing, for each work material.

Conventionally, this interference check is performed by placing the work material on the work table of the machine tool, executing the machining program in the idle operation state where the machining tool at the spindle head is released, and connecting the spindle head and the work table in the machine coordinate axis direction. This is performed by visually recognizing the relationship between the spindle head and the work material on the work table in that state. In addition to this interference check, the operator visually inspects the variation in the allowance, and based on this, finds a mistake in creating a machining program, finds the necessity of changing the number of cuts in the machining program, and An abnormal shape of the processed material has been found visually.

Workers visually check for interference, visually check for errors in creating a machining program based on variation in machining allowance, find the need to change the machining program, and discover abnormalities in the shape of the machining material, all of which are experienced by the operator In addition, there is a large dependence on intuition, and there is a possibility that a mistake may occur. In addition, the work efficiency is poor and the burden on the operator is large.

In recent years, the accuracy of data creation has been improved by the creation of machining programs by CAD / CAM, so in the case of die machining that requires time for probe-out, actual machining without probe-out is performed to reduce time. In some cases, however, there is no guarantee that the spindle head will not interfere with the workpiece, and if the spindle head interferes with the workpiece, enormous loss will occur. There is a possibility of inviting.

The problems to be solved are to automatically and accurately detect the mistake of creating the machining program, find the necessity of changing the machining program, and find the abnormal shape of the machining material without visual inspection by the operator. The purpose is to shorten the operation preparation time including probe-out, and to perform machining efficiently and safely.

According to the method for checking the suitability of machining of a machine tool according to the present invention, a three-dimensional measuring detector measures a three-dimensional shape of a machining material to acquire machining material shape data and defines a three-dimensional shape of a machined workpiece. Data is acquired, and it is determined whether or not the difference between the processed material shape data and the product shape data at the same coordinate position is greater than a predetermined standard cut allowance by arithmetic processing by arithmetic processing means. Is characterized in that a change instruction of a machining program is issued.

Further, in the method for checking the suitability of a machine tool according to the present invention, a three-dimensional measuring detector measures a three-dimensional shape of a work material to acquire work material shape data, and defines a three-dimensional shape of a processed workpiece. Product shape data is obtained, and whether or not the difference between the workpiece shape data at the same coordinate position and the product shape data is larger than a specified value is determined by arithmetic processing by arithmetic processing means, and the workpiece shape data at the same coordinate position is determined. If the difference between the data and the product shape data is larger than a specified value, it is determined that there is a mistake in the creation of the machining program or an abnormal shape of the machined material.

In the method for checking whether or not a machining tool is suitable for machining a machine tool according to the present invention, a CCD camera captures a three-dimensional image of a machining material in a moire manner under the projection of a parallel light grid by a projector, and uses the image data output by the CCD camera to produce the machining material. Shape data can be obtained.

According to the method for checking the suitability of a machine tool for machining according to the present invention, the product shape data can be obtained from a CAD device.

In the method for checking the suitability of a machine tool according to the present invention, the measurement of the three-dimensional shape of the work material by the three-dimensional measurement detector includes the holding means of the three-dimensional measurement detector and the three-dimensional measurement detection of the work material. Using a three-dimensional shape measuring device different from a machine tool having a table that can be positioned and arranged at a three-dimensional shape measuring position by a tool, or the three-dimensional measuring detector instead of a machining tool at the spindle head of the machine tool Mounting the spindle head and the work table of the machine tool on which the work material is installed in the coordinate axis direction of the machine tool so that the three-dimensional shape of the work material is measured on the coordinate axis of the machine tool. It may be a detailed feature.

According to the method for checking the suitability of machining of a machine tool according to the present invention, it is possible to find a mistake in creating a machining program, find the necessity of changing the machining program, and find a shape abnormality of a machining material by using a three-dimensional measurement detector. By comparing the processed material shape data obtained by measuring the three-dimensional shape of the above with the machine shape data and the product shape data, all operations can be performed automatically and efficiently without visual inspection of the operator, The operation preparation time including probe-out can be shortened, and the machine tool can be efficiently and safely operated.

When measuring the three-dimensional shape of the work material by the three-dimensional measurement detector using a three-dimensional shape measurement device different from the machine tool, the machine tool is not occupied for the three-dimensional shape measurement of the work material. In addition, the operating rate of the machine tool does not decrease. When a plurality of workpieces are sequentially processed, the three-dimensional shape of the next workpiece can be measured during the processing of one workpiece, thereby reducing the time required for the entire processing. it can.

On the other hand, a three-dimensional measuring detector is mounted on the spindle head of the machine tool in place of the machining tool, and the spindle head and the work table are relatively moved in the coordinate axis direction of the machine tool, so that the three-dimensional measurement detector is mounted on the coordinate axis of the machine tool. When measuring the three-dimensional shape of the workpiece using the on-machine method, no special XY stage is required for measuring the three-dimensional shape, and the positioning position of the workpiece depends on the shape measurement and the processing. There is no fluctuation, and the reliability of the processing adequacy check is further improved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a system configuration diagram of an inspection apparatus used for implementing a processing suitability checking method according to the present invention. This inspection device has an arithmetic processing device 1 and an image processing device 3.

The arithmetic processing device 1 is configured by a microcomputer or the like, and includes an interference check unit 5, a mounted tool check unit 7, a machining program check unit 9, and a workability check unit 11.

The image processing device 3 is connected with a three-dimensional image pickup device 17 for picking up a processing material by a CCD camera 13 and a projector 15 as a three-dimensional measurement detector, and a CCD camera 19 for picking up a mounting tool.

(4) The imaging device 17 stereoscopically images the processing material W positioned and arranged on the table 21 by the CCD camera 13 under the projection of the parallel light grid by the projector 15 in a moire manner.

The CCD camera 19 captures an image of the tool holder 25 and the processing tool 27 mounted on the main shaft 23 of the machine tool. This imaging may be two-dimensional and is not shown in the figure, but the illumination device illuminates the mounting portion of the tool holder 25 and the processing tool 27 by a backlight method, and the tool holder 25 and the processing tool What is necessary is just to image 27 as a shadow image.

The image processing device 3 receives image data output from the CCD camera 13 and generates, for each pixel of the captured image, processing material shape data indicating the three-dimensional shape of the processing material W by three-dimensional coordinates. Is output to the arithmetic processing unit 1.

Further, the image processing device 3 generates actual tool shape data indicating the shape of the tool holder 25 and the processing tool 27 for each pixel of the captured image by inputting image data output by the CCD camera 19, and outputs the actual tool shape data. Is output to the arithmetic processing unit 1.

The interference checking unit 5 inputs the processing material shape data from the image processing device 3 and the processing program of the processing material W from the programming device 29, and outputs the processing data of the processing material 3 from the machine side including the spindle head equipped with the processing tool and the tool holder. Input the machine shape data that defines the three-dimensional shape, and the coordinate position of the work material W given from the work material shape data at the relative movement position between the spindle head and the work table of the machine tool by the feed command described in the machining program It is determined by arithmetic processing whether or not is within the space occupied by the machine given by the machine shape data.If the coordinate position of the work material is within the space occupied by the machine, the work material and the machine interfere with each other. Then, it judges and outputs the interference check result.

The mounted tool check unit 7 inputs the actual tool shape data from the image processing device 3 and also inputs the tool shape data defining the shapes of the processing tool and the tool holder, and compares and compares the actual tool shape data with the tool shape data. To determine whether the actual tool shape data and the tool shape data are different, and if they are different, determine that the mounting error of the processing tool or tool holder is incorrect and output the mounted tool check result . The shape data comparison in the mounted tool check unit 7 may be either three-dimensional shape data or two-dimensional shape data. In the case of three-dimensional shape data, the tool shape data is the machine shape data in the above-described interference check. In the case of two-dimensional shape data, the tool shape data may be obtained by converting the machine shape data in the above-described interference check into two-dimensional shape data.

The processing program check unit 9 inputs the processing material shape data from the image processing device 3 and the product shape data defining the three-dimensional shape of the processed workpiece from the CAD device 30, and processes the processing material shape data at the same coordinate position. It is determined by comparison processing whether the difference between the product and the product shape data is greater than a predetermined standard cut allowance. If the difference is greater than the standard cut allowance, a machining program change instruction is output.

The processing suitability checking unit 11 inputs the processing material shape data from the image processing device 3 and the product shape data defining the three-dimensional shape of the processed workpiece from the CAD device 30, and processes the processing material shape data at the same coordinate position. And whether the difference between the product shape data and the product shape data is greater than a specified value is determined by the comparison calculation process. If the difference is larger than the specified value, it is determined that there is a machining program creation error or that the shape of the workpiece is abnormal. Output the pass / fail result.

FIG. 2 is a system configuration diagram in a case where the processing suitability checking method according to the present invention is carried out on a machine tool by an on-machine method. The gate-shaped machining center 31 includes a bed 33, a work table 35 disposed on the bed 33 and movable in the X-axis direction, a gate-shaped fixed frame 37 fixedly disposed across the bed 33 in the Y-axis direction, and a gate. A cross beam 39 movably provided in the vertical direction (Z-axis direction) on the fixed frame 37; a saddle 41 provided movably in the Y-axis direction on the cross beam 39; And a ram 43 provided so as to be capable of being provided. At the time of three-dimensional measurement of the processing material W positioned and arranged on the work table 35, a three-dimensional imaging head 45 using a CCD camera and a projector instead of the processing head is provided at the lower end of the ram 43. Is mounted downward.

The three-dimensional imaging head 45 receives a projector drive command from the image processing device 47 and three-dimensionally captures the processing material W positioned and arranged on the work table 35 in a moire manner, and converts the image data of the processing material W into three-dimensional images. Output to the dimensional image processing device 47.

The saddle 41 is provided with a tool holder mounted on a main shaft of a processing head mounted on the ram 43 during processing, and a mounted tool imaging CCD camera 49 for imaging a processing tool.

The image processing device 47 inputs image data from the CCD camera of the three-dimensional imaging head 45 and the CCD camera 49 for imaging the mounting tool, and converts the processing material shape data indicating the three-dimensional shape of the processing material W into three-dimensional coordinates of the captured image. It is generated for each pixel, and the processed material shape data is output to the CAD / CAM device 51 by the computer system.

The image processing device 47 receives image data from the mounted tool imaging CCD camera 49 and generates actual tool shape data indicating the shape of the tool holder mounted on the main shaft and the processing tool for each pixel of the captured image, The actual tool shape data is output to the CAD / CAM device 51.

The CAD / CAM device 51 generates product shape data defining the three-dimensional shape of the processed workpiece by the CAD function, generates an NC processing program from the product shape data by the CAM function, and converts the processing program into a portal machining center. 31 to the NC device 52.

Further, the CAD / CAM device 51 outputs the measurement program to the NC device 53, and the NC device 52 measures the three-dimensional shape of the workpiece W by the three-dimensional imaging head 45 or captures the mounting tool by the mounting tool imaging CCD camera 49. The X, Y, and Z axis commands are output to the portal machining center 31 according to the measurement / imaging program.

(4) When the three-dimensional imaging head 45 measures the three-dimensional shape of the workpiece W, the relative position between the three-dimensional imaging head 45 and the workpiece W is set to a predetermined position.

The CAD / CAM device 51 inputs the work material shape data from the image processing device 47, and also inputs the machine shape data and executes the check program, thereby performing the interference check, the installed tool check, the work program check, and the work suitability check. I do.

Next, a specific procedure of the check method according to the present invention will be described with reference to the flowchart shown in FIG. FIG. 4 shows an example of the shape of the processed material and the shape of the product.

{Circle around (1)} First, the processing material shape data (Xw (n), Yw (n), Zw (n)) is read (step 10), and the number of data (the number of measurement data) Nwmax is obtained (step 20). FIG. 5A shows an example of the data of the processing material shape data (Xw (n), Yw (n), Zw (n)).

Next, product shape data (Xp (n), Yp (n), Zp (n)) defining the three-dimensional shape of the processed workpiece, that is, the product is read (step 30), and the number of data (design data) Number) Npmax is obtained (step 40). FIG. 5B shows a data example of the product shape data (Xp (n), Yp (n), Zp (n)).

Next, the difference Zw (n) −Zp (n) = ΔZ (n) between the coordinate values Zw (n) and Zp (n) in the Z-axis direction of the processed material shape data and the product shape data is calculated as each data (n = 1). ... Nwmax), and a Z-direction difference list as shown in FIG. 6 is created (step 50).

The normal direction at each coordinate position on the surface of the processing material is calculated from the processing material shape data (Xw (n), Yw (n), Zw (n)), and the processing material shape data (Xw (n), Yw (n) is calculated. ), Zw (n)) and the product shape data (Xp (n), Yp (n), Zp (n)) to calculate the difference ΔL (n) in the surface normal direction to each data (n = 1 to Nwmax). ), And creates a list of surface normal direction difference amounts as shown in FIG. 7 (step 60).

Next, as a machining adequacy check, it is determined for each data (n = 1 to Nwmax) whether or not the Z-direction difference ΔZ (n) is greater than a preset Z-direction difference specification value ΔZmax. It is determined for each data (n = 1 to Nwmax) whether or not the line direction difference ΔL (n) is greater than a preset surface normal direction difference prescribed value ΔLmax (step 70), and ΔZ (n) If at least one of the relations> .DELTA.Zmax or .DELTA.L (n)>. DELTA.Lmax is satisfied, it is determined that there is a machining program creation error or a shape error of the workpiece W, an error is output, and the check routine is terminated and terminated ( Step 80).

When this machining adequacy check is completed in a conforming state, as a machining program check, the Z direction difference ΔZ (n) or the surface normal direction difference ΔL (n) is set as a standard cutting direction preset as a cutting direction allowance. It is determined for each data (n = 1 to Nwmax) whether or not it is larger than the cutting allowance ΔC (step 90). If at least one of the relations ΔZ (n) or ΔL (n)> ΔC is satisfied, Then, a message of a machining program change for prompting a change of the number of times of machining is output on a monitor (step 100).

(5) With this monitor output, the monitor screen of the CAD / CAM device 49 becomes an edit screen of the machining program, and the machining program of the line requiring the change of the number of times of machining is displayed on the screen.

Thereby, the operator changes the number of times of processing. Note that the number of changes in the number of times of processing may be automatically set by internal processing by the CAD / CAM apparatus, and the operator may only need to confirm the change in the number of times of processing by yes or no.

(5) When the above-described machining suitability check and machining program check are completed, an interference check is started next. At the time of the interference check, first, the spindle head shape data, the tool holder shape data, and the tool data such as the tool diameter and the shaft length are read as the tool information (step 110). These data are input in advance to the CAD / CAM device 49 for each spindle head and tool, and a combination of these data defines the three-dimensional shape on the machine side including the spindle head equipped with the machining tool and the tool holder. Machine shape data is obtained.

Next, an NC program is read as a machining program (step 120), and an interference check is executed for each block (steps 130 to 150). This interference check checks whether the spindle head including the machining tool and the tool holder at the relative movement position between the spindle head and the work table 35 defined by the feed command in each block of the NC program collides with the workpiece W on the work table 35. The coordinate value of the occupied space on the machine side is calculated from the relative movement position data between the spindle head and the work table 35 and the machine shape data, and this coordinate value and the work material shape data (Xw ( n), Yw (n), Zw (n)), it is determined whether or not the coordinate position of the processing material W is in the occupied space on the machine side, and the coordinate position of the processing material W is occupied on the machine side. If it is included, it is determined that the workpiece W and the machine interfere with each other. If there is interference, a message indicating the interference is output on the monitor (step 160), and the check routine is terminated and terminated.

(4) If the processing material W does not interfere with the machine, the mounted tool is checked (step 170). This attached tool check is to compare the actual tool shape data with the tool shape data to determine whether or not the actual tool shape data and the tool shape data are different. It is determined that the mounting error of the processing tool or the tool holder has occurred, and a message indicating that the mounting error of the tool has occurred is output on the monitor (step 180).

Next, a specific example of the interference check will be described with reference to FIGS. As shown in FIG. 8, a spindle 59 is attached to a ram 55 of the saddle 53 by an attachment 57, and a machining tool 63 is exchangeably mounted on a tip of the spindle 59 by a tool holder 61. The processing tool 63 is movable in the Y-axis direction and the Z-axis direction.

The work table 65 is movable on the bed 67 in the X-axis direction, and the work material W is mounted on the table surface by the jig 69.

Here, as shown in FIG. 9, the machine coordinates of the center of the work table 65 are machine reference coordinate values (Xm0, Ym0, Zm0), and as shown in FIG. The plane is defined as the main axis Z-axis reference position, the rotation center position of the main axis 57 is defined as the main axis X-axis reference position, and the main axis Y-axis reference position Ys0, and the dimensions Ls1, Ls2, Ls3, Ds1, Ds2, Ds3 of each part thereof are shown in FIG. , Dimensions Lt1, Lt2, Lt3, Dt1, Dt2, Dt3 of each part of the tool holder 61 and the processing tool 63. The machine reference coordinate value (Xm0, Ym0, Zm0) is the origin of the mounting position of the workpiece W on the work table 65, and indicates a deviation from the coordinate value of the machine origin.

If the difference between the origin of the work coordinate system of the work material W attached to the work table 65 by the jig 69 and the machine reference coordinate values (Xm0, Ym0, Zm0) is (Xori, Yori, Zori), the work material W The coordinate values (Xwm (n), Ywm (n), Zwm (n)) in the machine coordinate system are obtained by the following equations. These coordinate values (Xwm (n), Ywm (n), Zwm (n)) are global coordinate values with respect to the machine origin coordinate value.

Xwm (n) = Xm0 + Xw (n) -Xori
Ywm (n) = Ym0 + Xw (n) -Yori
Zwm (n) = Zm0 + Zw (n) -Zori
If the coordinate position of the spindle head including the machining tool 63 in the machine coordinate system is (Xtm, Ytm, Ztm) and the coordinate position based on the NC data is (Xnc, Ync, Znc), the coordinate position based on the NC data ( Xnc, Ync, Znc) and the coordinate position (Xtm, Ytm, Ztm) in the machine coordinate system are converted.

Xtm = Xnc
Ytm = Ync
Ztm (k) = Znc-Zm0-L (k)
However, in L (k = 1-6),
L1 = Lt1
L2 = Lt2
L3 = Lt3
L4 = -Ls1
L5 = -Ls1 + Ls2
L6 = -Ls1 + Ls3
At a coordinate position (Xtm, Ytm, Ztm), a coordinate position Pn (Xwm (n) in the machine coordinate system of the processing material W in a cylindrical space C (k) determined by a radius R (k) and an axial length L (k). , Ywm (n), Zwm (n)) are determined by numerical calculation.

Where R (k = 1 to 6)
R1 = Dt1 / 2
R2 = Dt2 / 2
R3 = Dt3 / 2
R4 = Ds1 / 2
R5 = Ds2 / 2
R6 = Ds3 / 2
C (k = 1 to 6) = Radius R (k = 1 to 6), Cylindrical space of each part based on axial length L (k = 1 to 6) When coordinate position Pn is not included in cylindrical space C (k) It is "no interference", and when the coordinate position Pn is included in the cylindrical space C (k), it is "with interference".

Further, a mathematical expression indicating the curved surface S formed by the surface of the processing material W is created from the coordinate position Pn (Xwm (n), Ywm (n), Zwm (n)) in the machine coordinate system of the processing material W, and the coordinate position (Xtm , Ytm, Ztm), it is determined by numerical calculation whether or not the cylindrical surface C (k) determined by the radius R (k) and the axial length L (k) intersects with the curved surface S.

場合 When the cylindrical space C (k) does not intersect with the curved surface S, “no interference” is given, and when the cylindrical space C (k) intersects with the curved surface S, “interference exists”.

The measurement of the three-dimensional shape of the work material can be performed by, other than on the work table of the machine tool, holding means for the three-dimensional measurement detector and a table capable of positioning the work material at the three-dimensional shape measurement position by the three-dimensional measurement detector. This may be performed using a three-dimensional shape measurement device different from the machine tool whose table is constituted by an XY stage, if necessary.

The measurement of the three-dimensional shape of the material to be processed may be performed by a three-dimensional shape measuring device using a stylus, in addition to the measurement based on the image data obtained by the three-dimensional imaging device using a CCD camera.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to this, and various embodiments can be made within the scope of the present invention. It will be clear to the skilled person.

FIG. 1 is a system configuration diagram illustrating an example of an inspection device used for performing a method for checking whether a machine tool is suitable for processing according to the present invention. 1 is a system configuration diagram showing an example of a system configuration in a case where a method for checking machining suitability of a machine tool according to the present invention is performed by an on-machine method. It is a flowchart explaining the specific implementation procedure of the machining propriety check method of the machine tool according to the present invention. It is a perspective view showing an example of a processed material shape and a product shape. (A) is an explanatory view showing an example of processed material shape data, and (b) is an explanatory view showing an example of product shape data. It is explanatory drawing which shows an example of a Z direction difference list. It is explanatory drawing which shows an example of a surface normal direction difference list. FIG. 9 is an explanatory diagram showing a specific example of interference check. It is explanatory drawing which shows the example of a setting of a machine reference coordinate. It is a side view which shows the shape of a spindle head part. It is a side view which shows the shape of a tool part.

Explanation of reference numerals

REFERENCE SIGNS LIST 1 arithmetic processing unit 3 image processing unit 5 interference check unit 7 mounted tool check unit 9 processing program check unit 11 processing suitability check unit 13 CCD camera 15 projector 17 three-dimensional imaging device 19 CCD camera 21 table 29 programming device 30 CAD device 31 Type machining center 35 Work table 41 Saddle 43 Ram 45 3D imaging head 47 3D image processing device 49 CCD camera for mounting tool imaging 51 CAD / CAM device 52 NC device 53 Saddle 55 Ram 57 Attachment 59 Main shaft 61 Tool holder 63 Processing tool 65 Work table 69 Jig W Processing material

Claims (6)

The three-dimensional measurement detector measures the three-dimensional shape of the processing material to obtain the processing material shape data, and also obtains the product shape data defining the three-dimensional shape of the processed workpiece, and performs arithmetic processing by arithmetic processing means. It is characterized in that it is determined whether or not the difference between the processing material shape data and the product shape data at the same coordinate position is larger than a predetermined standard cutting allowance, and when it is larger, a change instruction of the processing program is issued. For checking the adequacy of machine tool processing. The three-dimensional measurement detector measures the three-dimensional shape of the processing material to obtain the processing material shape data, and also obtains the product shape data defining the three-dimensional shape of the processed workpiece, and obtains the processing material at the same coordinate position. Whether or not the difference between the shape data and the product shape data is larger than a specified value is determined by an arithmetic processing by an arithmetic processing unit, and when the difference between the processed material shape data and the product shape data at the same coordinate position is larger than a specified value. Is a method for checking the suitability of machining of a machine tool, wherein it is determined that there is a mistake in creating the machining program or an abnormal shape of a machining material. A three-dimensional image of a processing material is moire-typed by a CCD camera under the projection of a parallel light grating by a projector, and the processing material shape data is obtained by image data output by the CCD camera. Item 3. The method for checking whether a machine tool is suitable for processing according to item 1 or 2. The method according to any one of claims 1 to 3, wherein the product shape data is acquired from a CAD device. The measurement of the three-dimensional shape of the work material by the three-dimensional measurement detector includes a holding unit for the three-dimensional measurement detector and a table that can position and position the work material at the three-dimensional shape measurement position by the three-dimensional measurement detector. The method according to any one of claims 1 to 4, wherein the method is performed by using a three-dimensional shape measuring device different from the machine tool. The three-dimensional measurement detector is mounted on the spindle head of the machine tool in place of the machining tool, and the spindle head and the work table of the machine tool on which the machining material is installed are relatively moved in the coordinate axis direction of the machine tool to perform the machining. The method according to claim 1, wherein the three-dimensional shape of the material is measured on a coordinate axis of the machine tool.

Images