Laser tool setting gauge correction tool and laser tool setting gauge correction method

By using a laser tool setter to calibrate the fixture and method, and by utilizing the calibrator to move around the machine tool spindle in a circular motion, the reference coordinates of the laser tool setter are obtained and calibrated. This solves the perpendicularity problem caused by the installation error of the laser tool setter, realizes the perpendicular calibration of the laser tool setter and the machine tool spindle, and improves the machining accuracy.

CN121042946APending Publication Date: 2025-12-02XIAMEN JANSSEN CNC EQUIPMENT CO LTD
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Patent Information

Application Number
CN202511320116.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-16
Publication Date
2025-12-02

AI Technical Summary

Technical Problem

In existing technologies, there are installation errors during the installation of laser tool setters, which makes it impossible to guarantee the perpendicularity of the emitted laser to the axis of the machine tool spindle, thus affecting the machining quality.

Method used

A laser tool setter calibration fixture is provided, including a mounting plate, a clamping column, and a calibration component. The fixture is clamped onto the tool holder via the clamping column. The calibration component is eccentrically positioned to move circumferentially around the machine tool spindle axis. By monitoring the Zm axis coordinates of the calibration component in conjunction with the CNC machine tool, two reference coordinates of the laser tool setter are obtained, and the laser tool setter is calibrated according to their relative magnitude relationship so that the laser emitted by it is perpendicular to the machine tool spindle.

Benefits of technology

This correction method allows for the quick and convenient acquisition of the coordinates of two points with misaligned spacing on the laser emitted by the laser tool setter, reducing the difference between their reference coordinates and achieving perpendicular correction between the laser emitted by the laser tool setter and the machine tool spindle axis, thereby improving machining accuracy.

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Abstract

The invention discloses a laser tool setting gauge correction tool and a laser tool setting gauge correction method, and relates to the technical field of machine tool calibration. The laser tool setting gauge correction tool comprises a mounting plate, a clamping column and a calibration piece. The mounting plate is provided with a first mounting surface and a second mounting surface which are arranged oppositely; the clamping column is installed on the first installation face and used for being clamped on a cutter handle so as to be installed on a machine tool spindle of a numerical control machine tool where the laser tool setting gauge is located through the cutter handle. The calibration piece is mounted on the second mounting surface and extends towards one side towards which the second mounting surface faces; the calibration piece is eccentrically arranged relative to the clamping column, so that when the machine tool spindle rotates and drives the mounting plate to rotate through the clamping column, the calibration piece moves on the circumference around the axis of the machine tool spindle. According to the invention, the posture of the laser emitted by the laser tool setting gauge can be corrected to be perpendicular to the axis of the machine tool spindle.
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Description

Technical Field

[0001] This application relates to the field of machine tool calibration technology, and more specifically to laser tool setter calibration fixtures and laser tool setter calibration methods. Background Technology

[0002] Laser tool setters are highly precise measuring tools in CNC machining, and their calibration accuracy directly affects machining quality. A typical laser tool setter consists of the tool setter body and a mounting bracket. The tool setter body is mounted on the mounting bracket and then on the CNC machine tool. To eliminate installation errors caused during the installation of the laser tool setter, a common method is to use a dial indicator to check the installation error of the mounting bracket and correct for it. However, because installation errors still exist between the tool setter body and the mounting bracket, the perpendicularity of the laser emitted by the tool setter body to the axis of the machine tool spindle cannot be guaranteed. Summary of the Invention

[0003] In view of this, in order to solve the above-mentioned technical problems, this application provides a laser tool setting device calibration fixture and a laser tool setting device calibration method.

[0004] To address the aforementioned technical problems, this application provides a laser tool setting device calibration fixture, comprising: The mounting plate has a first mounting surface and a second mounting surface that are arranged opposite to each other. The clamping column is installed on the first mounting surface and is used to clamp onto the tool holder so that it can be installed on the machine tool spindle of the CNC machine tool where the laser tool setter is located via the tool holder; And calibration components, mounted on the second mounting surface and extending toward the side toward which the second mounting surface faces; The calibration component is eccentrically positioned relative to the clamping post, so that when the machine tool spindle rotates and drives the mounting plate to rotate through the clamping post, the calibration component moves around the axis of the machine tool spindle in a circle.

[0005] To address the aforementioned technical problems, another technical solution adopted in this application is to provide a calibration method for a laser tool setter, which includes: Provide the aforementioned laser tool setting calibration fixture; The clamping post is clamped onto the tool holder so that it can be mounted on the machine spindle of the CNC machine tool where the laser tool setter is located; the machine spindle has a first axis side and a second axis side arranged opposite to each other along the axis perpendicular to the machine spindle. The bottom coordinate of the calibration part on the Zm axis of the machine tool coordinate system is monitored in real time by the CNC machine tool and used as the Zm axis reference coordinate of the calibration part. The first reference coordinate of the Zm axis and the second reference coordinate of the laser tool setter are obtained respectively; The first reference coordinate of the Zm axis of the laser tool setter is the Zm axis reference coordinate of the calibration component when the calibration component rotates to the first axis side and the bottom of the calibration component moves to block the laser emitted by the laser tool setter; the second reference coordinate of the Zm axis of the laser tool setter is the Zm axis reference coordinate of the calibration component when the calibration component rotates to the second axis side and the bottom of the calibration component moves to block the laser emitted by the laser tool setter. The laser tool setter is calibrated based on the relative magnitudes of its first and second reference coordinates along the Zm axis, so as to reduce the absolute value of the difference between them.

[0006] Beneficial Effects: Unlike existing technologies, the laser tool setting fixture of this application, in conjunction with a CNC machine tool and a laser tool setting device, allows for the convenient and quick acquisition of the axial coordinates of two disparate points on the laser emitted by the laser tool setting device—namely, the first reference coordinate and the second reference coordinate of the laser tool setting device axis—by moving a calibration component around the axis of the machine tool spindle in a circular motion. Furthermore, the laser tool setting device is corrected based on the relative magnitudes of these two reference coordinates, reducing the absolute value of the difference between them. This allows the attitude of the laser emitted by the laser tool setting device to be corrected towards an attitude perpendicular to the axis of the machine tool spindle. Attached Figure Description

[0007] Figure 1 This is a flowchart illustrating the laser tool setting device calibration method of this application; Figure 2 This is a schematic diagram of the laser tool setting device calibration fixture provided in step S110 of the laser tool setting device calibration method of this application; Figure 3 yes Figure 2 A cross-sectional schematic diagram of the laser tool setting device calibration fixture shown; Figure 4 This is a scene diagram of step S120 in the laser tool setting device calibration method of this application; Figure 5 This is a schematic diagram of a scenario in step S140 of the laser tool setter calibration method of this application, which involves obtaining the first reference coordinate of the Zm axis of the laser tool setter. Figure 6 This is a schematic diagram of a scenario in step S140 of the laser tool setter calibration method of this application, which involves obtaining the second reference coordinate of the Zm axis of the laser tool setter. Figure 7 This is a schematic diagram of step S11 in the laser tool setting device calibration method of this application; Figure 8 This is a schematic diagram of step S12 in the laser tool setting device calibration method of this application; Figure 9 This is a schematic diagram of step S21 in the laser tool setting device calibration method of this application; Figure 10 This is a schematic diagram of step S22 in the laser tool setting device calibration method of this application.

[0008] Explanation of reference numerals in the attached figures: Laser tool setting fixture 100; mounting plate 110; first mounting surface 111; second mounting surface 112; mounting hole 113; clamping post 120; calibration component 130; connecting part 131; calibration rod 132; calibration ball 133; limit step surface 134; adjusting assembly 140; adjusting plate 141; locking screw 142; adjusting screw 143; tool holder 200; machine tool spindle 300; first axis side 301; second axis side 302; laser tool setting device 400; laser tool setting device body 410; tool setting device mounting bracket 420; prompting device 500; axis L1 of machine tool spindle 300; axis L2 of calibration component 130; laser L3 emitted by laser tool setting device 400; relative distance parameter d1 of Zm axis. Detailed Implementation

[0009] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0010] Please see Figure 1 The laser tool setting device calibration method of this application includes steps S110 to S150.

[0011] Step S110: Provide a laser tool setter calibration fixture.

[0012] like Figures 2-4 As shown, the laser tool setter calibration fixture 100 provided in this application includes a mounting plate 110, a clamping post 120, and a calibration component 130.

[0013] Mounting plate 110 has a first mounting surface 111 and a second mounting surface 112 disposed opposite to each other. Clamping post 120 is mounted on the first mounting surface 111 for clamping onto tool holder 200, so as to be mounted via tool holder 200 to the machine spindle 300 of the CNC machine tool where laser tool setter 400 is located. Calibration member 130 is mounted on the second mounting surface 112 and extends toward the side facing the second mounting surface 112.

[0014] The calibration component 130 is eccentrically positioned relative to the clamping column 120, so that when the machine tool spindle 300 rotates and drives the mounting plate 110 to rotate through the clamping column 120, the calibration component 130 moves around the axis L1 of the machine tool spindle 300 in a circle.

[0015] Step S120: Clamp the clamping post onto the tool holder so that it can be mounted on the machine spindle of the CNC machine tool where the laser tool setter is located via the tool holder.

[0016] In step S120, as Figure 4 As shown, the clamping column 120 is clamped onto the tool holder 200 so that it can be mounted on the machine tool spindle 300 of the CNC machine tool where the laser tool setter 400 is located.

[0017] The machine tool spindle 300 has a first shaft side 301 and a second shaft side 302 arranged opposite to each other along the axis L1 perpendicular to the machine tool spindle 300.

[0018] Step S130: Control the CNC machine tool to monitor the bottom of the calibration part in real time on the Zm axis coordinate of the machine tool coordinate system as the Zm axis reference coordinate of the calibration part.

[0019] Optionally, such as Figure 4 As shown, the CNC machine tool has a spindle coordinate system Os-XsYsZs and a machine coordinate system Om-XmYmZm. The Xs, Ys, and Zs axes of the spindle coordinate system Os-XsYsZs are all parallel to the Xm, Ym, and Zm axes of the machine coordinate system Om-XmYmZm. The Ys axis of the spindle coordinate system Os-XsYsZs can extend along the axis L1 of the machine tool spindle 300, and the Ys axis of both the spindle coordinate system Os-XsYsZs and the machine coordinate system Om-XmYmZm can be perpendicular to... Figure 4 The paper shown is facing inwards.

[0020] like Figure 4 As shown, in a CNC machine tool, when the calibration component 130 is installed on the machine tool spindle 300 via the tool holder 200, the distance between the bottom of the calibration component 130 and the coordinate origin Os of the spindle coordinate system Os-XsYsZs in the Zs axis direction can be preset as the relative distance parameter d1 of the Zm axis.

[0021] CNC machine tools can monitor in real time the coordinates of the origin Os of the spindle coordinate system Os-XsYsZs on the Zm axis of the machine tool coordinate system Om-XmYmZm as the spindle reference coordinates.

[0022] The CNC machine tool can calculate the Zm axis coordinates of the bottom of the calibration part 130 in the machine tool coordinate system Om-XmYmZm based on the spindle reference coordinates and the relative distance parameter d1 of the Zm axis, and use this coordinate as the Zm axis reference coordinate of the calibration part.

[0023] Step S140: Obtain the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis of the laser tool setter.

[0024] Among them, such as Figure 5 As shown, the first reference coordinate of the Zm axis of the laser tool setter is the reference coordinate of the Zm axis of the calibration component 130 when it rotates to the first axis side 301 and the bottom of the calibration component 130 moves to block the laser L3 emitted by the laser tool setter 400. Figure 6 As shown, the second reference coordinate of the Zm axis of the laser tool setter is the reference coordinate of the Zm axis of the calibration component when the calibration component 130 rotates to the second axis side 302 and the bottom of the calibration component 130 moves to block the laser L3 emitted by the laser tool setter 400.

[0025] It should be noted that when the bottom of the calibration component 130 is moved to block the laser L3 emitted by the laser tool setter 400, it can be when the bottom of the calibration component 130 blocks a local area, half area, or the entire area of ​​the laser L3 emitted by the laser tool setter 400, but it is not limited to this.

[0026] S150: The laser tool setter is corrected according to the relative magnitude relationship between the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis, so as to reduce the absolute value of the difference between the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis.

[0027] Combination Figure 4 See Figure 5 and Figure 6 Since the switching between the calibration component 130 and the first axis side 301 and the second axis side 302 requires movement around the axis L1 of the machine tool spindle 300 in a circle, the calibration component 130 moves in a plane perpendicular to the machine tool spindle 300. This results in the following correspondence: the more perpendicular the laser L3 emitted by the laser tool setter 400 is to the axis L1 of the machine tool spindle 300, the smaller the absolute value of the difference between the first reference coordinate of the laser tool setter's Zm axis and the second reference coordinate of the laser tool setter's Zm axis.

[0028] Therefore, the relative height relationship between the two ends of the laser L3 emitted by the laser tool setter 400 can be determined based on the relative magnitude of the first reference coordinate and the second reference coordinate of the laser tool setter's Zm axis. Furthermore, by adjusting either the lower or higher position of the two ends of the laser L3 emitted by the laser tool setter 400, the absolute value of the difference between the first and second reference coordinates of the laser tool setter's Zm axis can be reduced. This allows for attitude correction of the laser L3 emitted by the laser tool setter 400 towards an attitude perpendicular to the axis L1 of the machine tool spindle 300.

[0029] By utilizing the laser tool setting fixture 100 of this application in conjunction with a CNC machine tool and a laser tool setting device 400, the Zm-axis coordinates of two disjointed points on the laser L3 emitted by the laser tool setting device 400 can be conveniently and quickly obtained by moving the calibration component 130 around the axis L1 of the machine tool spindle 300 in a circular motion. These coordinates are the first and second reference coordinates of the laser tool setting device's Zm-axis. Furthermore, the laser tool setting device 400 is corrected based on the relative magnitudes of these two coordinates, reducing the absolute value of the difference between them. This allows the attitude of the laser L3 emitted by the laser tool setting device 400 to be corrected to be perpendicular to the axis L1 of the machine tool spindle 300.

[0030] Example 2 Example 2 is a further limitation based on Example 1. The parts in Example 2 that are the same as those in Example 1 will not be repeated. The further limitations in Example 2 are as follows.

[0031] Optionally, such as Figures 2-3 As shown, the calibration component 130 includes a connecting portion 131, a calibration rod 132, and a calibration ball 133. A mounting hole 113 is provided on the portion of the mounting plate 110 located on the outer periphery of the clamping post 120, and the connecting portion 131 is installed in the mounting hole 113. The connecting portion 131 is located at one end of the calibration rod 132, and the other end of the calibration rod 132 extends towards the side facing the second mounting surface 112. The calibration ball 133 is located at the other end of the calibration rod 132.

[0032] In this way, the bottom of the calibration component 130 is the bottom of the calibration ball 133, so that the bottom of the calibration ball 133 can contact the laser L3 emitted by the laser tool setter 400 to block the laser L3 emitted by the laser tool setter 400.

[0033] Optionally, such as Figures 2-3 As shown, the calibration rod 132 has a limiting step surface 134 at one end where the connecting portion 131 is provided. The limiting step surface 134 is located on the outer periphery of the connecting portion 131 and abuts against the second mounting surface 112. In this way, the position of the calibration member 130 in the direction of the axis L2 of the calibration member 130 can be limited, so that when the limiting step surface 134 abuts against the second mounting surface 112, the calibration member 130 can be more accurately installed into the mounting hole 113 through the connecting portion 131.

[0034] Optionally, such as Figures 2-3As shown, the mounting plate 110 may be provided with multiple mounting holes 113, which may be arranged sequentially in a direction away from the clamping post 120. In this way, the calibration member 130 can be installed by selecting one of the multiple mounting holes 113, so that the installation position of the calibration member 130 can be flexibly selected.

[0035] It should be noted that, in one alternative example, the calibration rod 132 may be omitted, and the calibration ball 133 may be directly mounted on the connecting part 131. In another alternative example, the calibration ball 133 may be replaced with an object of other shapes, as long as it can block the laser L3 emitted by the laser tool setter 400.

[0036] Example 3 Example 3 is a further limitation based on Example 1 or Example 2. The parts of Example 3 that are the same as those of Example 1 or Example 2 will not be repeated. The further limitations in Example 3 are as follows.

[0037] Optionally, step S210 is included before step S150.

[0038] Step S210: Determine whether the absolute value of the difference between the first reference coordinate of the Zm axis of the laser tool setter and the second reference coordinate of the Zm axis of the laser tool setter is not greater than a preset threshold.

[0039] For example, and not as a limitation, such as Figures 2-4 As shown, the eccentricity between the axis of the clamping column 120 and the axis L2 of the calibration component 130 can be 40um~60um, and the preset threshold can be 4um~8um, but is not limited to this.

[0040] For example, the eccentricity between the axis of the clamping column 120 and the axis L2 of the calibration component 130 can be 40um, 50um or 60um, and the preset threshold can be 4um, 6um or 8um.

[0041] If the absolute value of the difference between the first reference coordinate of the Zm axis and the second reference coordinate of the laser tool setter is greater than a preset threshold, then after executing step S150, return to re-execute step S140. If the absolute value of the difference between the first reference coordinate of the Zm axis and the second reference coordinate of the laser tool setter is not greater than the preset threshold, then the process ends.

[0042] Through the above step S210, steps S140 to S150 can be repeated until the absolute value of the difference between the first reference coordinate of the Zm axis and the second reference coordinate of the laser tool setter is not greater than a preset threshold. In this way, the laser L3 emitted by the laser tool setter 400 and the axis L1 of the machine tool spindle 300 can meet the perpendicularity requirement.

[0043] Example 4 Example 4 is a further limitation based on Example 1, Example 2 or Example 3. The parts of Example 4 that are the same as those of Example 1, Example 2 or Example 3 will not be repeated. The further limitations in Example 4 are as follows.

[0044] Optionally, such as Figures 2-4 As shown, the laser tool setter calibration fixture 100 also includes an adjustment component 140. The adjustment component 140 is connected to the mounting plate 110 and the clamping column 120 or to the mounting plate 110 and the calibration component 130, respectively, and is used to adjust the posture of the calibration component 130 to adjust the parallelism between the axis L2 of the calibration component 130 and the axis L1 of the machine tool spindle 300.

[0045] The steps before obtaining the first reference coordinate of the Zm axis and the second reference coordinate of the laser tool setter include steps S310 to S320.

[0046] Step S310: Use a test gauge to detect parameters that directly or indirectly reflect the parallelism between the machine tool spindle and the calibration part, and use these parameters as parallelism reference parameters.

[0047] Optionally, combined Figures 2-3 See Figure 4 As shown, the test instrument can be a dial indicator (not shown in the figure). The dial indicator can be used to measure the parallelism parameters between the machine tool spindle 300 and the calibration part 130, which directly or indirectly affect the parallelism. The parallelism reference parameters can be found in the existing technology regarding parallelism parameters, and will not be elaborated here.

[0048] Step S320: Operate the adjustment component according to the parallelism reference parameters to adjust the orientation of the calibration part so that the orientation of the calibration part is adjusted in the direction that the axis of the calibration part and the axis of the machine tool spindle meet the parallelism requirements.

[0049] Combination Figures 2-3 See Figure 4 As shown, in step S320, when the parallelism between the machine tool spindle 300 and the calibration component 130, as reflected by the parallelism parameter, does not meet the requirements, the adjustment component 140 is operated to adjust the posture of the calibration component 130 so that the axis L2 of the calibration component 130 is closer to the parallel state with the axis L1 of the machine tool spindle 300.

[0050] Optionally, combined Figures 2-3 See Figure 4 As shown, the adjustment assembly 140 is disposed between the mounting plate 110 and the clamping post 120, and the adjustment assembly 140 includes an adjustment plate 141, a locking screw 142 and a plurality of adjustment screws 143.

[0051] The adjusting plate 141 is disposed between the mounting plate 110 and the clamping post 120. A locking screw 142 extends from the side of the second mounting surface 112, passing through the mounting plate 110 and the adjusting plate 141, and is threadedly connected to the clamping post 120. Multiple adjusting screws 143 are distributed around the clamping post 120 on its outer periphery, and are threadedly connected to the mounting plate 110, extending from the side of the second mounting surface 112 to abut against the adjusting plate 141.

[0052] For example, and not as a limitation, the four adjusting screws 143 are distributed at four corners on the outer periphery of the clamping post 120, but are not limited thereto.

[0053] Thus, when operating the adjustment assembly 140, the locking screw 142 can be loosened first to release the adjustment plate 141 from the clamping post 120, and then the multiple adjustment screws 143 can be finely adjusted to adjust the position of the calibration component 130.

[0054] Optionally, the laser tool setter 400 may include a tool setter mounting bracket 420 and a laser tool setter body 410. The laser tool setter body 410 is the part that emits the laser L3, and the laser tool setter body 410 is mounted on the CNC machine tool via the tool setter mounting bracket 420. For example, it can be mounted on the worktable of the CNC machine tool or other places.

[0055] Step S330: Repeat steps S310 to S320 until the axis L2 of the calibration part 130, which is reflected by the parallelism reference parameter, and the axis L1 of the machine tool spindle 300 meet the parallelism requirements.

[0056] By repeating steps S310 to S320 in the above manner, the accuracy of the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis of the laser tool setter can be further improved, thereby improving the accuracy of the calibration.

[0057] Example 5 Example 5 is a further limitation based on Example 1, Example 2, Example 3 or Example 4. The parts of Example 5 that are the same as those of Example 1, Example 2, Example 3 or Example 4 will not be repeated. The further limitations in Example 5 are as follows.

[0058] Optionally, such as Figure 4 As shown, the laser tool setter 400 is connected to the prompting device 500. When the laser L3 emitted by the laser tool setter 400 is blocked, the prompting device 500 is controlled to issue a blocking prompt message indicating that the laser L3 emitted by the laser tool setter 400 is blocked.

[0059] To facilitate prompting of personnel, the prompting device 500 can be integrated into the laser tool setting device 400. Optionally, the obstruction prompting information can be one or more of the following: flashing light at a specific frequency, illuminating light of a specific color, sound prompting at a specific frequency, sound prompting with a specific loudness, and sound prompting with a specific timbre, but is not limited to these. "Specific" means pre-selected and set. Considering that sound will cause vibration of the laser tool setting device 400, the vibration prompting information is preferably one or more of the following: flashing light at a specific frequency and illuminating light of a specific color.

[0060] The calibration component 130 can be switched between the first axis side 301 and the second axis side 302 by controlling the rotation of the machine tool spindle 300.

[0061] The steps for obtaining the first reference coordinate of the Zm axis of the laser tool setter may include steps S11 to S12.

[0062] like Figure 7 As shown, in step S11: control the machine tool spindle 300 to rotate back and forth, causing the calibration component 130 to swing around the axis L1 of the machine tool spindle 300 on the first axis side 301, and control the machine tool spindle 300 to drive the calibration component 130 to gradually approach the laser L3 emitted by the laser tool setter 400.

[0063] The swing in step S11 can be a back-and-forth swing.

[0064] like Figure 8 As shown, in step S12: when the prompting device 500 issues an obstruction prompt, the reference coordinates of the Zm axis of the calibration component shown by the CNC machine tool are obtained as the first reference coordinates of the Zm axis of the laser tool setter.

[0065] In step S12, when the operator observes the obstruction warning information issued by the prompting device 500, he can view the Zm axis reference coordinate of the calibration part in the CNC machine tool and use the viewed Zm axis reference coordinate of the calibration part as the first reference coordinate of the Zm axis of the laser tool setter.

[0066] Optionally, the step of obtaining the second reference coordinate of the Zm axis of the laser tool setter includes steps S21 to S22.

[0067] like Figure 9 As shown, in step S21: control the machine tool spindle 300 to rotate back and forth, causing the calibration component 130 to swing around the axis L1 of the machine tool spindle 300 on the second axis side 302, and control the machine tool spindle 300 to drive the calibration component 130 to gradually approach the laser L3 emitted by the laser tool setter 400.

[0068] The swing in step S21 can be a back-and-forth swing.

[0069] like Figure 10As shown, in step S22: when the CNC machine tool issues an obstruction warning message, the reference coordinates of the Zm axis of the calibration component shown by the CNC machine tool are obtained as the second reference coordinates of the Zm axis of the laser tool setter.

[0070] In step S22, when the operator observes the obstruction warning information issued by the prompting device 500, he can view the Zm axis reference coordinate of the calibration part in the CNC machine tool and use the viewed Zm axis reference coordinate of the calibration part as the second reference coordinate of the Zm axis of the laser tool setter.

[0071] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A laser tool setting device calibration fixture, characterized in that, include: The mounting plate has a first mounting surface and a second mounting surface that are arranged opposite to each other. A clamping post is installed on the first mounting surface for clamping onto the tool holder, so as to be installed on the machine tool spindle of the CNC machine tool where the laser tool setter is located via the tool holder; And a calibration element, which is mounted on the second mounting surface and extends toward the side toward which the second mounting surface faces; The calibration component is eccentrically positioned relative to the clamping post, such that when the machine tool spindle rotates and drives the mounting plate to rotate through the clamping post, the calibration component moves circumferentially around the axis of the machine tool spindle.

2. The laser tool setting device calibration fixture according to claim 1, characterized in that, The laser tool setting device also includes: An adjustment assembly is connected to the mounting plate and the clamping column, or to the mounting plate and the calibration component, respectively, for adjusting the posture of the calibration component to adjust the parallelism between the axis of the calibration component and the axis of the machine tool spindle.

3. The laser tool setting device calibration fixture according to claim 2, characterized in that, The adjustment assembly is disposed between the mounting plate and the clamping column, and the adjustment assembly includes an adjustment plate, a locking screw and a plurality of adjustment screws; The adjusting plate is disposed between the mounting plate and the clamping column; the locking screw passes through the mounting plate and the adjusting plate from the side where the second mounting surface is located to thread the clamping column; a plurality of adjusting screws are distributed around the clamping column on the outer periphery of the clamping column, and the plurality of adjusting screws are threaded to the mounting plate and pass through the mounting plate from the side where the second mounting surface is located to abut against the adjusting plate.

4. The laser tool setting device calibration fixture according to claim 1, characterized in that, The calibration component includes: a connecting part, wherein the mounting plate has a mounting hole on the portion located on the outer periphery of the clamping column, and the connecting part is installed in the mounting hole; A calibration rod, wherein the connecting part is disposed at one end of the calibration rod, and the other end of the calibration rod extends toward the side facing the second mounting surface; And a calibration ball, located at the other end of the calibration rod.

5. The laser tool setting device calibration fixture according to claim 4, characterized in that, The calibration rod has a limiting step surface at one end where the connecting part is provided. The limiting step surface is located on the outer periphery of the connecting part and abuts against the second mounting surface.

6. A calibration method for a laser tool setter, characterized in that, The correction method includes: Provide a laser tool setting device calibration fixture as described in claim 1 and any one of claims 4 to 5; The clamping column is clamped onto the tool holder so that it can be mounted on the machine spindle of the CNC machine tool where the laser tool setter is located; the machine spindle has a first axial side and a second axial side arranged opposite to each other along a direction perpendicular to the axis of the machine spindle. The CNC machine tool is controlled to monitor the bottom of the calibration part in real time at the Zm axis coordinate of the machine tool coordinate system, which serves as the Zm axis reference coordinate of the calibration part. The first reference coordinate of the Zm axis and the second reference coordinate of the laser tool setter are obtained respectively; Wherein, the first reference coordinate of the Zm axis of the laser tool setter is the Zm axis reference coordinate of the calibration component when the calibration component rotates to the first axis side and the bottom of the calibration component moves to block the laser emitted by the laser tool setter; the second reference coordinate of the Zm axis of the laser tool setter is the Zm axis reference coordinate of the calibration component when the calibration component rotates to the second axis side and the bottom of the calibration component moves to block the laser emitted by the laser tool setter. The laser tool setter is corrected based on the relative magnitude of the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis, so as to reduce the absolute value of the difference between the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis.

7. The laser tool setting device calibration method according to claim 6, characterized in that, Before the step of correcting the laser tool setter based on the relative magnitude relationship between the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis, so as to reduce the absolute value of the difference between the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis, the following steps are included: Determine whether the absolute value of the difference between the first reference coordinate of the Zm axis of the laser tool setter and the second reference coordinate of the Zm axis of the laser tool setter is not greater than a preset threshold. If the absolute value of the difference between the first reference coordinate of the Zm axis of the laser tool setter and the second reference coordinate of the Zm axis of the laser tool setter is greater than a preset threshold, then the following steps are performed: The laser tool setter is corrected based on the relative magnitude of the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis, so as to reduce the absolute value of the difference between the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis. Return to and re-execute the steps of obtaining the first reference coordinate of the Zm axis and the second reference coordinate of the Zm axis of the laser tool setter respectively; If the absolute value of the difference between the first reference coordinate of the Zm axis of the laser tool setter and the second reference coordinate of the Zm axis of the laser tool setter is not greater than a preset threshold, then the process ends.

8. The laser tool setting device calibration method according to claim 6, characterized in that, The laser tool setting device also includes: An adjustment assembly, connected to the mounting plate and the clamping column or to the mounting plate and the calibration component, is used to adjust the posture of the calibration component to adjust the parallelism between the axis of the calibration component and the axis of the machine tool spindle. Prior to the steps of obtaining the first reference coordinate of the Zm axis and the second reference coordinate of the laser tool setter, respectively, the following steps are included: The parameters that directly or indirectly reflect the parallelism between the machine tool spindle and the calibration component are measured using a test table and used as parallelism reference parameters. The adjustment component is operated according to the parallelism reference parameters to adjust the orientation of the calibration component so that the orientation of the calibration component is adjusted in the direction that the axis of the calibration component and the axis of the machine tool spindle meet the parallelism requirements. Repeat the steps of using a test gauge to detect parameters that directly or indirectly reflect the parallelism between the machine tool spindle and the calibration component as parallelism reference parameters, until the adjustment component is operated according to the parallelism reference parameters to adjust the orientation of the calibration component, so that the orientation of the calibration component is adjusted in the direction that the axis of the calibration component and the axis of the machine tool spindle meet the parallelism requirements, until the axis of the calibration component and the axis of the machine tool spindle, as reflected by the parallelism reference parameters, meet the parallelism requirements.

9. The laser tool setting device calibration method according to claim 6, characterized in that, The laser tool setter is connected to a communication prompting device. The laser tool setter is used to control the prompting device to issue an obstruction prompt message indicating that the laser emitted by the laser tool setter is being obstructed when the laser emitted by the laser tool setter is obstructed. The step of obtaining the first reference coordinate of the Zm axis of the laser tool setter includes: The machine tool spindle is controlled to rotate back and forth, causing the calibration component to swing around the axis of the machine tool spindle on the first axis side, and the machine tool spindle is controlled to drive the calibration component to gradually approach the laser emitted by the laser tool setter; When the prompting device issues the obstruction prompt information, the Zm axis reference coordinate of the calibration component shown by the CNC machine tool is obtained as the first Zm axis reference coordinate of the laser tool setter.

10. The laser tool setting device calibration method according to claim 9, characterized in that, The step of obtaining the second reference coordinate of the Zm axis of the laser tool setter includes: The machine tool spindle is controlled to rotate back and forth, causing the calibration component to swing around the axis of the machine tool spindle on the second axis side, and the machine tool spindle is controlled to drive the calibration component to gradually approach the laser emitted by the laser tool setter; When the CNC machine tool issues the obstruction warning information, the Zm axis reference coordinate of the calibration component shown by the CNC machine tool is obtained as the second Zm axis reference coordinate of the laser tool setter; The calibration component is switched between the first axis side and the second axis side by controlling the rotation of the machine tool spindle to drive the calibration component.

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