JP6615285B1 - Tool runout adjustment method and machine tool - Google Patents

Abstract

An optimal phase of a tool with respect to a tool holder is calculated, and the tool can be re-setup with respect to the tool holder based on the calculation result. A tool 10 provided with a plurality of cutting edges and markers on a side surface is gripped by a spindle 112 or a tool holder 114, the spindle is rotated at a machining rotational speed, and the magnitude and phase of the deflection of the tool shank 12 and the marker The phase of the tool is rotated, the height in the radial direction of the tool and the phase around the center axis OT are measured for each of the plurality of cutting edges 16-1 to 16-4 by rotating the main shaft, and the runout of the measured shank portion of the tool is measured. Based on the size and phase of the blade and the radial height and phase of the cutting edge, the phase for gripping the tool with which the variation of the locus drawn by the cutting edge is reduced is calculated. [Selection] Figure 1

Description

  The present invention relates to a tool run adjustment method for reducing tool runout due to variations in the position of a cutting edge of a rotary tool having a plurality of cutting edges, and a machine tool for executing the tool runout adjustment method.

  Patent Document 1 describes a technique for measuring the amount of tool deflection and changing the tool mounting phase around the rotation axis of the spindle or tool holder when the detected amount of tool deflection is greater than the allowable range. Yes.

JP 2017-007030

  In what phase the tool is re-attached to the tool holder, the machined surface roughness is reduced and the reduction in tool life can be prevented. In the technique described in the above, the tool runout amount must be measured by reattaching the tool to the tool holder several times in a trial and error manner until the runout amount of the tool falls within an allowable range.

  The present invention has a technical problem to solve such problems of the prior art, calculates the optimum phase of the tool with respect to the tool holder, calculates the direction and angle of re-setup of the tool with respect to the tool holder, and calculates the calculation. It is an object of the present invention to provide a tool run-out adjustment method that enables a tool to be re-setup with respect to a tool holder based on the result. Furthermore, an object of the present invention is to provide a machine tool capable of executing the tool runout adjustment method.

In order to achieve the above-described object, according to the present invention, there is provided a tool including a shank portion and a blade portion having a plurality of cutting edges coupled to the tip of the shank portion and provided with a marker on a side surface of the shank portion. In a method of adjusting the tool runout of a machine tool that is gripped by the spindle or tool holder in the shank and rotates the spindle to cut the workpiece, the spindle is rotated at the machining speed, and the tool shank is adjusted according to the rotation angle of the spindle. Department of deflection magnitude and phase, and a step of measuring the phase of the marker, by rotating the spindle at a low speed, a plurality of swing the tool number for each cutting edge, the center height and the main shaft of the radius direction of each cutting edge and measuring the axial phase relative to the marker around, deflection of the size of the shank portion of the measured said tool, and the phase of the marker, based the on the semi-radial height and phase of the cutting edge There is provided a tool run-out adjustment method comprising a step of calculating a phase for gripping a tool with a small variation in the locus drawn by the cutting edge, and a step of reattaching the tool to the spindle or tool holder at the calculated phase. The

Furthermore, according to the present invention, a tool having a shank portion and a blade portion having a plurality of cutting edges coupled to the tip of the shank portion and provided with a marker on the side surface of the shank portion is provided with a spindle or a tool holder in the shank portion. In a machine tool for cutting a workpiece by rotating the spindle and rotating the spindle, a sensor for measuring the radial displacement of the tool shank and blade and the presence or absence of the marker, and a phase for detecting the rotation phase of the spindle A detector, the magnitude of the shank of the tool according to the rotation angle of the spindle when the spindle measured by the sensor and the phase detector is rotated at the processing rotation speed, the phase of the marker, and the spindle and the radial direction of each cutting edge of the tool when rotated at a low speed high, based on the phase with respect to the marker, position for gripping a tool variations in height of the cutting edge is reduced A calculation unit for obtaining a Bei a correction unit having at least one of the arithmetic unit in the display device for displaying a phase obtained, and before Ki演 calculation unit with automatic tool setup device reseating tool phase obtained A machine tool is provided.

  According to the present invention, the optimum phase of the tool with respect to the tool holder can be obtained. As a result, the work of re-setup for reattaching the tool to the tool holder is reduced, and the time required for it can be shortened. Further, the machined surface roughness or the machined surface accuracy can be improved by adjusting the tool runout based on the obtained optimum phase. Furthermore, since the cutting amount of the specific cutting edge can be prevented from becoming excessively large, it is possible to prevent the cutting edge from being worn out at an early stage.

1 is a schematic side view of a machine tool to which a tool runout adjustment method of the present invention is applied. It is a top view of the machine tool of FIG. It is a simplified side view of the tool shown with a tool holder. FIG. 5 is a schematic cross-sectional view of the tool along a straight line LB1 in FIG. FIG. 5 is a schematic end view showing a tip portion of the tool of FIG. 4. FIG. 6 is a schematic end view similar to FIG. 5 of a tool whose cutting edge height is not constant. It is a graph which shows the measurement result of the runout of the shank part of a tool. It is a figure which shows the Lissajous curve calculated | required from the measurement result of FIG. It is a figure which shows the fluctuation | variation of the center axis line of the tool along the Lissajous curve of FIG. It is the schematic which shows the position of the cutting blade while the center of a tool moves along the Lissajous curve of FIG. While the rotating tool moves along the linear tool path, the tip point of the cutting edge engaged with the workpiece at a rotational position of 90 °, 180 °, 270 °, 0 °,. It is a diagram connected with a plurality of line segments. It is a figure which shows the schematic of the process surface formed in a workpiece | work with the locus | trajectory which a cutting edge draws in the rotation position of 90 degrees, 180 degrees, 270 degrees, 0 degrees, ... 0 degrees. It is a flowchart for performing the tool run-out adjusting method of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
Referring to FIGS. 1 and 2, a machine tool 100 for executing the tool runout adjustment method of the present invention includes a bed 102 as a base to be fixed to a floor surface, a column 104 fixed to the upper surface in a rear portion of the bed 102, a column An X slider 106 is mounted on the front surface of 104 so as to be able to reciprocate in the X-axis direction (the direction perpendicular to the paper surface in FIG. 1) which is the horizontal left-right direction. Z slider 108 that can be attached, spindle device 110 that is attached to Z slider 108 so as to move together with Z slider 108, and that supports spindle 112 rotatably around vertical rotation axis O, and the front portion of bed 102 In which the workpiece (not shown) to be machined is mounted on the upper surface so as to be able to reciprocate in the horizontal front and rear direction (left and right in FIG. 1) 116 are provided as main components. The spindle device 110 includes a spindle motor (not shown) that rotationally drives the spindle 112 and a detector such as a rotary encoder that detects the rotational position or phase of the spindle 112 around the rotation axis O.

  A rotary tool 10 such as a ball end mill or a flat end mill (hereinafter simply described as the tool 10) is attached to the lower end portion of the main shaft 112 via a tool holder 114. A taper hole (not shown) is formed in the lower end portion of the main shaft 112. A taper portion 114a of the tool holder 114 is fitted into the taper hole, and a clamp device (not shown) disposed in the main shaft 112 is provided. The tool holder 114 is clamped to the lower end portion of the main shaft 112.

  3 to 6, the tool 10 has a shank portion 12 that is inserted into a tool insertion hole (not shown) of the tool holder 114. The shank portion 12 has a cylindrical shape extending along the central axis OT. On the surface of the shank portion 12, a marker 14 made of unevenness is provided. A plurality of blade portions 16 in which four cutting blades 16-1 to 16-4 are formed in the present embodiment are integrally coupled to the tip of the shank portion 12. The number of cutting blades formed on the blade portion 16 may be, for example, two less than four, for example, six or eight more than four. Alternatively, an odd number of cutting edges may be formed in the blade portion 16.

  Laser measuring devices 118 and 120 are disposed on the table 116 as sensors for measuring the radial displacement of the tool. The laser measuring instruments 118 and 120 may be measuring instruments using a laser beam such as LC50-DIGILOG commercially available from Bloom Novo Test, for example. The laser measuring instruments 118 and 120 are arranged and fixed on the table 116 so as to irradiate the laser beams LBY and LBX in the Y-axis and X-axis directions, respectively. Needless to say, the laser measuring instruments 118 and 120 are arranged on the table 116 at positions that do not hinder the processing of a workpiece (not shown). The laser measuring instruments 118 and 120 are measuring instruments that can measure the radial displacement of the tool 10 in the Y-axis direction and the X-axis direction. The sensor that measures the radial displacement of the tool may be an imaging device such as a CCD camera.

  Although not particularly shown in FIGS. 1 and 2, the machine tool 100 includes an X axis, a Y axis, and a Z axis that reciprocally drive the X slider 106, the table 116, and the Z slider 108 in the X axis, Y axis, and Z axis directions. The linear feed device is provided. The X-axis, Y-axis, and Z-axis linear feed devices are attached to a ball screw (not shown) extending in the X-axis, Y-axis, and Z-axis directions, the X-slider 106, the table 116, and the Z-slider 108. A nut (not shown) that engages the ball screws in the X-axis, Y-axis, and Z-axis directions, and a servo motor (not shown) that is coupled to the ends of the ball screws in the X-axis, Y-axis, and Z-axis directions. , A digital scale (not shown) for measuring coordinate values in the X-axis, Y-axis, and Z-axis directions can be included. The machine tool 100 may further include one or two rotary feed shaft devices (not shown).

  Further, the machine tool 100 includes a tool magazine (not shown) that stores a plurality of sets of tools 10 mounted on the tool holder 114, and a tool magazine 114 that is mounted on the tool holder 114 between the tool magazine and the spindle 112. A tool changer (not shown) for exchanging 10 together with the tool holder 114 may be provided.

  The machine tool 100 includes a control device 122 that controls a feed device in the X-axis, Y-axis, and Z-axis directions, a spindle device 110, laser measuring instruments 118 and 120, and the like. The control device 122 also constitutes a calculation unit that calculates the optimum phase of the tool with respect to the tool holder. The control device 122 includes a CPU (Central Processing Element), a memory device such as RAM (Random Access Memory) and ROM (Read Only Memory), a storage device such as HDD (Hard Disk Drive) and SSD (Solid State Drive), and an output device. It may be composed of an input port and a computer including a bidirectional bus interconnecting them, an amplifier (not shown) for supplying power to the feeder and spindle device 110 and associated software.

  The control device 122 may include an NC device that controls a servo motor and a spindle motor of the feeding device, a machine control device that controls the laser measuring instruments 118 and 120, a tool changer, and the like. Or you may comprise like software as a part of the general NC apparatus and machine control apparatus which control a machine tool. The control device 122 can be formed by an electric circuit arranged in a control panel (not shown) arranged in the vicinity of the machine tool 100. The control panel can be attached to a side surface of a cover (not shown) surrounding the machine tool 100. The control panel may include a display device (not shown) such as a liquid crystal display that displays the operating state of the machine tool 100.

  The cutting edges 16-1 to 16-4 are designed so as to be arranged symmetrically with respect to the central axis OT of the tool 10, as shown in FIG. However, as shown in FIG. 6, due to processing errors when grinding the cutting edges 16-1 to 16-4 and non-uniformity of the film thickness when coating the cutting edges 16-1 to 16-4, The heights of the cutting edges 16-1 to 16-4 or the radial positions of the end points of the cutting edges 16-1 to 16-4 vary. Due to the difference in height between the cutting edges 16-1 to 16-4, the machining surface accuracy is reduced, or in the case of a specific cutting edge, for example, the cutting edge 16- having the highest cutting edge in the example of FIG. There arises a problem that 3 wears out early.

  On the other hand, the main shaft 112 and the tool holder 114 inevitably have an unbalance around the central axis OH, and when the main shaft 112 rotates at a high speed, the main shaft 112 swings around the rotation axis O. Due to such deflection of the tool holder 114, the tool 10 approaches and separates from the surface of the workpiece during processing, so that the processing surface roughness or processing surface accuracy decreases.

  Thus, the final runout of the tool, in which the unbalance of the tool holder 114 and the non-uniformity of the heights of the cutting edges 16-1 to 16-4 of the tool 10 are combined, is the tool holder. It changes depending on the phase of the tool 10 attached to 114 with respect to the tool holder 114, that is, the angular position around the center axis OT of the tool 10 with respect to the tool holder 114, thereby changing the surface roughness or surface accuracy. The present invention provides a tool so that the deflection around the center axis OH based on the unbalance of the tool holder 114 and the unevenness of the heights of the cutting edges 16-1 to 16-4 of the tool 10 are offset from each other. By determining the phase of the tool 10 relative to the holder 114 and reattaching or resetting the tool 10 to the tool holder 114, the runout of the tool is adjusted.

Hereinafter, a method for adjusting the tool runout will be described in detail.
FIG. 7 is a graph schematically showing a measurement result of runout based on the unbalance of the tool holder 114. In FIG. 7, the curve 1 is the shake of the shank portion 12 measured by the laser beam LBX irradiated in the X-axis direction by the laser measuring device 120, and the curve 2 is the laser beam irradiated in the Y-axis direction by the laser measuring device 118. The runout of the shank portion 12 measured by LBY is shown.

  In order to obtain the curve 1, first, as indicated by reference numeral LB1 in FIG. 3, the laser beam LBX irradiated in the X-axis direction by the laser measuring instrument 120 is positioned at the height of the marker 14 (Z-axis direction position). As described above, the tool 10 and the table 116 are relatively moved by the X-axis, Y-axis, and Z-axis feeding devices of the machine tool 100. The spindle 112 is rotated at the processing rotation speed, in the example of FIG. 7, at 15000 RPM, and the runout of the shank portion 12 is measured. In general, the roundness error of the shank portion of the rotary tool is small enough to be ignored. During the measurement, the tool 10 does not move in the X-axis, Y-axis, and Z-axis directions.

  Similarly, in the curve 2 as well, as indicated by reference numeral LB1 in FIG. 3, the laser beam LBY irradiated in the Y-axis direction by the laser measuring instrument 118 is positioned at the height of the marker 14 (Z-axis direction position). As described above, the tool 10 and the table 116 are relatively moved by the X-axis, Y-axis, and Z-axis feeding devices of the machine tool 100. The spindle 112 is rotated at the processing rotation speed, in the example of FIG. 7, at 15000 RPM, and the runout of the shank portion 12 is measured. During the measurement, the tool 10 does not move in the X-axis, Y-axis, and Z-axis directions.

The two curves 1 and 2 obtained in this way are fluctuations PSX1, PSX2,... That appear in the curves 1 and 2 when the rotation position or phase of the marker 14 intersects the laser beam LBX in the X-axis direction and the marker 14. , And fluctuations PSY1, PSY2,... Appearing on the curves 1 and 2 when the laser beam LBY in the Y-axis direction and the marker 14 intersect. A time difference Δt ₁ t ₂ between PSXi (i = 1, 2, 3,...) And PSYi (i = 1, 2, 3,...) Is a time difference corresponding to a phase difference of 90 °. In the example of 1 ms. Similarly, the time difference Δt ₂ t ₃ between PSXi and PSXi + 1 (i = 1, 2, 3,...) Or PSYi and PSYi + 1 (i = 1, 2, 3,. This is a time difference corresponding to the phase difference, which is 4 ms in the example of FIG.

  Based on the curves 1 and 2, as shown in FIG. 8, a Lissajous curve CL that is a locus of points obtained by using two simple vibrations (curves 1 and 2) orthogonal to each other as an ordered pair can be obtained. The Lissajous curve CL can be considered as a locus of the central axis OT in a plane (XY plane) perpendicular to the central axis OT of the tool 10. That is, as shown in FIG. 9, the tool 10 rotates about its central axis OT and turns along the Lissajous curve CL, and the trajectories of the cutting edges 16-1 to 16-4 are two circles. It is a composition of movement. FIG. 10 is a schematic view showing the positions of the cutting edges 16-1 to 16-4 while the central axis OT of the tool 10 moves along the Lissajous curve CL. In actual cutting, relative movement of the tool 10 with respect to the workpiece along the tool path by the X-axis, Y-axis, and Z-axis feeding devices of the machine tool 100 is added to this.

  9 and 10, the tool 10-1 shows a state where the marker 14 is at a rotational position where it faces the machining surface of the workpiece. In the following description, this rotational position is a position where the rotational angle = 0 °. And The tool 10-2 is in the state of the tool 10 at a position (rotation angle = 90 °) rotated 90 ° counterclockwise from the position where the rotation angle = 0 °, and the tools 10-3, 10-4 are further anti-clockwise. The state of the tool 10 in the position (rotation angle = 180 degrees, 270 degrees) rotated 90 degrees clockwise is shown. In this embodiment, the marker 14 is arranged at the same angular position (phase) as the cutting edge 16-1 with respect to the central axis OT. However, the present invention is not limited to such a positional relationship, and the marker 14 is a shank. The surface of the portion 12 may be disposed at any angular position with respect to the central axis OT.

  FIG. 11 shows the rotation angle = 90 °, 180 °, 270 °, 0 °,... 0 ° while the rotating tool 10 moves along the linear tool path PT as indicated by the arrow A. It is the diagram which connected the front-end | tip point of the cutting blades 16-1 to 16-4 engaged with the workpiece | work in the position with the several line segment L. FIG. The shape formed by the plurality of line segments L has a valley bottom PV at a rotation angle = 0 ° and a vertex PP at a rotation angle = 180 °.

  FIG. 12 shows a trajectory 202 drawn by the cutting edges 16-1 to 16-4 at the rotation positions of rotation angles = 90 °, 180 °, 270 °, 0 °,..., 0 °. It is the schematic of the processed surface 200 formed. A large number of cusps are formed on the processing surface 200 by a large number of loci 202 drawn by the tip points of the cutting edges 16-1 to 16-4. The height of each cusp is determined by the respective trajectories 202 of the cutting edges 16-1 to 16-4. The cusps are arranged so as to wave along the plurality of line segments L described above.

  Therefore, in the present invention, based on the Lissajous curve CL and the height data of the cutting edges 16-1 to 16-4, the phase of the tool 10 with respect to the tool holder 114 is determined so that the machining surface 200 is flattened. By doing so, the accuracy of the processed surface 200 is increased. As an example, in the above-described embodiment, the cutting edge 16-1 having the lowest height among the cutting edges 16-1 to 16-4 at the valley bottom PV engages with the workpiece, and the cutting edge 16- having the highest height at the vertex PP. The phase of the tool 10 can be determined relative to the tool holder 114 such that 4 engages the workpiece.

Next, an example of the tool runout adjustment method of the present invention will be described based on the flowchart shown in FIG.
First, prior to machining, the tool 10 attached to the tip of the spindle 112 is brought close to one of the laser measuring instruments 118 and 120 by the X-axis, Y-axis, and Z-axis feeding devices of the machine tool 100. Next, the laser beam LBY or LBX of any one of the laser measuring instruments 118 and 120 is irradiated to the cutting edge positions of the cutting edges 16-1 to 16-4 of the tool 10, and the spindle 112 is rotated at the processing rotational speed, thereby the tool. The cutting edge position fluctuations of the cutting edges 16-1 to 16-4 or the height of the cutting edges 16-1 to 16-4 of the tool are measured, and based on this, the machining surface roughness is predicted (step S10). .

  When the predicted machining surface roughness is within the allowable range (NO in step S12), machining is started by the tool 10 (step S14), and the tool runout adjustment method is finished without adjusting the tool runout. (Step S16).

  If the predicted machining surface roughness is not within the allowable range (YES in step S12), the laser beam LBY and LBX of the laser measuring instruments 118 and 120 are sequentially irradiated onto the marker 14 and the spindle 112 is rotated at the machining rotation speed. It rotates and the shake of the shank part 12 is measured (step S18). Based on this, the Lissajous curve CL is obtained.

  Next, the marker 14 is irradiated so that one of the laser beams LBY or LBX of the laser measuring instruments 118 and 120 is in contact therewith, and the rotation angle position of the main shaft 112 at that time is obtained (step S20). This rotational angle position is the previously described rotational angle = 0 ° position.

  As indicated by reference numeral LB2 in FIG. 3, the laser beam LBY or LBX of either of the laser measuring instruments 118 and 120 is at the height of the cutting edge 16-1 (Z-axis direction) while the rotational angle = 0 °. The main shaft 112 is fed in the Z-axis direction (step S22) so that the main shaft 112 is rotated at a low speed, for example, 1 RPM at a rotation angle = 0 °, and the cutting edges 16-1 to 16- 4 is measured (step S24). Thus, by measuring the height of the cutting edges 16-1 to 16-4 by rotating the main shaft 112 at a low speed, it is possible to eliminate the influence of the rotational vibration of the main shaft.

Since the optimum phase of the tool with respect to the tool holder changes depending on whether the machining surface for machining the workpiece is the XZ plane or the YZ plane, the laser beam LBY or LBX used for measurement is selected in consideration of the machining direction. 11 and 12 show an example in which the processed surface is formed on the YZ plane. In addition, when machining is performed on the entire circumference of the tool 10 regardless of whether the machining surface is the XZ plane or the YZ plane, the orientation of the machining surface and the machining surface roughness are obtained, and the condition that the fluctuation of the machining surface roughness is reduced is determined. Try to ask.

  Based on the Lissajous curve CL obtained in step S18 and step S24 and the heights of the cutting edges 16-1 to 16-4, the optimum phase of the tool 10 with respect to the tool holder 114, that is, the rotation angle position from the marker 14 is calculated. Then, the machined surface roughness is predicted from the machining simulation (step S26). If the predicted machining surface roughness is expected to be within the allowable range (YES in step S28), the tool 10 is re-setup to the phase calculated for the tool holder 114 (step S30), and the tool runout adjustment is performed. The method ends (step S32). If the predicted machining surface roughness is not expected to be within the allowable range (NO in step S28), a warning to replace the tool 10 or the tool holder 114 with another tool is displayed on the display device of the machine tool 100. By displaying, the operator is instructed to that effect (step S34), and the tool run-out adjustment method ends (step S36).

  The re-setup of the tool 10 with respect to the tool holder 114 in step S30 can be performed manually by the operator of the machine tool 100, but the tool 10 is removed from the tool holder 114 without changing the phase with respect to the tool holder 114, and then The tool 10 or the tool holder 114 is determined at the phase calculated in step S26, and a dedicated automatic tool setup device (not shown) for mounting the tool 10 on the tool holder 114 can be used. A robot may be used for the automatic re-setup apparatus.

  In the embodiment described above, the tool 10 is gripped by the spindle 112 via the tool holder 114. However, the present invention is not limited to this, and the tool 10 is directly gripped by the spindle 112. It may be. The automatic re-setup apparatus can remove the tool 10 from the spindle 112, determine the tool 10 or the spindle 112 in the phase calculated in step S26, and attach the tool 10 to the spindle 112.

  Furthermore, in the above-described embodiment, the processing simulation is performed using the Lissajous curve CL. However, it does not necessarily mean that the Lissajous curve CL is drawn or displayed. If the X and Y coordinate values of the center axis OH of the tool holder 114 can be determined on the basis of the measured value of the deflection of the shank portion 12 using the rotation angle of the tool holder 114 as a variable, a machining simulation is possible.

  According to the present embodiment, it is possible to obtain the optimum phase of the tool 10 with respect to the tool holder 114 around the center axis OH (OT), and therefore, a re-setup operation for reattaching the tool 10 to the tool holder 114 is possible. It is reduced and the time required for it can be shortened. Further, the machined surface roughness or the machined surface accuracy can be improved by adjusting the tool runout based on the obtained optimum phase. Moreover, since it can prevent that the cutting amount of a specific cutting edge among cutting edges 16-1 to 16-4 becomes large too much, it becomes possible to prevent that the lifetime of the tool 10 becomes shorter than the time assumed. .

DESCRIPTION OF SYMBOLS 10 Rotating tool 12 Shank part 14 Marker 16 Blade part 16-1 Cutting edge 16-2 Cutting edge 16-3 Cutting edge 16-4 Cutting edge 100 Machine tool 102 Bed 104 Column 106 X slider 108 Z slider 110 Spindle device 112 Spindle 114 Tool holder 114a Tapered portion 116 Table 118 Laser measuring device 120 Laser measuring device 122 Control device 200 Work surface 202 Trajectory LBX Laser beam LBY Laser beam

Claims (5)

A tool having a shank portion and a blade portion coupled to the tip of the shank portion and having a plurality of cutting edges and provided with a marker on the side surface of the shank portion is gripped by the spindle or tool holder in the shank portion, and the spindle is rotated. In the adjustment method of tool runout of machine tools that cut workpieces,
A step of rotating the spindle at the machining rotation speed and measuring the magnitude and phase of the shank of the tool according to the rotation angle of the spindle and the phase of the marker;
Rotating the spindle at a low speed, a step of measuring the phase with respect to plurality of swing the tool number for each cutting edge, the marker around the central axis of the height and the main shaft of the radius direction of each cutting edge,
And the magnitude of the deflection of the shank portion of the measured said tool, and the phase of the marker, based the on the semi-radial height and phase of the cutting edge, the variation of the trajectory drawn by the cutting edge grips the tool decreases Calculating the phase;
Reattaching the tool to the spindle or tool holder at the calculated phase;
A tool runout adjustment method characterized by comprising: If the tool is gripped so as to be in the phase calculated in the step of calculating, the processing simulation is further performed, and a step of predicting the processing surface roughness is further provided, and when the predicted processing surface roughness is within an allowable range, The tool run-out adjusting method according to claim 1, wherein a step of reattaching the tool is performed . Prepare a laser measuring instrument that can irradiate a laser beam in two directions that define a plane perpendicular to the axis of rotation of the spindle.
Irradiating the shank portion of the tool rotating at the processing rotational speed with a laser beam in one of the two directions, and measuring the magnitude of deflection in the irradiation direction of the laser beam and the rotational phase of the spindle;
Irradiating the shank portion of the tool rotating at the processing rotational speed with the laser beam in the other direction of the two directions, and measuring the magnitude of deflection in the irradiation direction of the laser beam and the rotational phase of the spindle,
The tool run-out adjustment method according to claim 1, wherein a magnitude of run-out of the shank portion of the tool and a rotation phase of the spindle are obtained from the measured values in the two directions. A tool having a shank portion and a blade portion coupled to the tip of the shank portion and having a plurality of cutting edges and provided with a marker on the side surface of the shank portion is gripped by the spindle or tool holder in the shank portion, and the spindle is rotated. In machine tools that cut workpieces,
A sensor for measuring the radial displacement of the shank part and the blade part of the tool and the presence or absence of the marker ;
A phase detector that detects the rotational phase of the spindle;
Rotation speed of the shank of the tool according to the rotation angle of the main shaft when the main shaft measured by the sensor and the phase detector is rotated at the processing rotation speed, the phase of the marker, and the main shaft at low speed A calculation unit for obtaining a phase for gripping the tool with a small variation in the height of the cutting edge based on the radial height of each cutting edge of the tool and the phase with respect to the marker ,
A correction unit having at least one of the display device, and the front Ki演 calculation unit with automatic tool setup device reseating tool phase obtained which displays a phase which has been determined by the computing unit,
A machine tool characterized by comprising: The sensor includes a laser measuring device that emits a laser beam in two directions that define a plane perpendicular to the rotation axis of the main shaft,
Irradiating the shank portion of the tool rotating at the processing rotational speed with a laser beam in one of the two directions, and measuring the magnitude of deflection in the irradiation direction of the laser beam and the rotational phase of the spindle;
Irradiating the shank portion of the tool rotating at the processing rotational speed with the laser beam in the other direction of the two directions, and measuring the magnitude of deflection in the irradiation direction of the laser beam and the rotational phase of the spindle,
The machine tool according to claim 4, wherein a magnitude of deflection of the shank portion of the tool and a rotational phase of the spindle are obtained from the measured values in the two directions.

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