High-speed electric spindle eccentricity tester calibration device and method

Abstract

The present invention discloses a high-speed electric spindle eccentricity tester calibration device and method, the high-speed electric spindle eccentricity tester calibration device comprises: a base, a high-speed electric spindle machine is installed on the base, the high-speed electric spindle machine has a spindle drive system and a test spindle, the test spindle is connected to the spindle drive system, a tester placement platform is provided on the base, the test spindle faces the tester placement platform; also includes a controller for controlling the spindle drive system and at least two laser displacement sensors, the laser displacement sensors face the test spindle, and the optical axes of each laser displacement sensor intersect, and the laser displacement sensor and the controller are both electrically connected to a data processor. The present invention can realize the measurement of the electric spindle eccentricity tester in a high-speed state, which is more in line with the actual application occasions of the electric spindle eccentricity tester.

Description

Technical Field

[0001] The invention belongs to the field of metrology and detection, and in particular relates to a calibration device and method for a high-speed electric spindle eccentricity tester. Background Art

[0002] With the rapid development of my country's microelectronics industry, the requirements and development trend of multifunctional, miniaturized, lightweight, high-density and high-reliability of electronic consumer products require the production of high-density, high-integration, encapsulated, miniaturized and multi-layered printed circuit boards. Mechanical drilling faces huge challenges. The number of layers of printed circuit boards is increasing, the diameter of PCB micro-holes is getting smaller and smaller, the corresponding micro-hole thickness-diameter ratio is also getting larger and larger, and the wiring density is getting denser and denser, which puts higher and stricter requirements on the quality of PCB holes. The high-speed electric spindle eccentricity tester is an instrument for measuring the spindle eccentricity of the high-speed drilling device, and the high-speed electric spindle eccentricity tester calibration device is a metrological instrument used to calibrate the high-speed electric spindle eccentricity tester.

[0003] The traditional method of detecting spindle eccentricity is more suitable for static or low-speed rotation state measurement, but it cannot be measured under high-speed rotation state (up to 250,000 rap / min). Summary of the invention

[0004] The purpose of the present invention is to provide a high-speed electric spindle eccentricity tester calibration device and method, the present invention can realize the measurement of the electric spindle eccentricity tester in a high-speed state, and is more in line with the actual application occasions of the electric spindle eccentricity tester.

[0005] The technical solution is as follows:

[0006] A high-speed electric spindle eccentricity tester calibration device comprises a base, on which a high-speed electric spindle machine is installed, the high-speed electric spindle machine has a spindle drive system and a test spindle, the test spindle is connected to the spindle drive system, a tester placement platform is provided on the base, and the test spindle faces the tester placement platform; it also comprises a controller for controlling the spindle drive system and at least two laser displacement sensors, the laser displacement sensors face the test spindle, and the optical axes of the laser displacement sensors intersect, and the laser displacement sensors and the controller are both electrically connected to a data processor.

[0007] Furthermore, there are three laser displacement sensors, all of which face the test spindle, and their optical axes intersect.

[0008] Furthermore, the planes where the three laser displacement sensors are located are perpendicular to the test main axis, and the optical axes of two adjacent laser displacement sensors form an angle of 120 degrees.

[0009] Furthermore, a cooling system is also included. The high-speed electric spindle machine has a cooling liquid inlet and a cooling liquid outlet, and the cooling system is connected to the cooling liquid inlet and the cooling liquid outlet.

[0010] Furthermore, an air compressor is also included. The main body of the high-speed electric spindle machine has a support shaft hole, the test spindle is installed in the support shaft hole, and the air compressor is connected to the support shaft hole through a high-pressure air pipe.

[0011] Furthermore, the high-speed electric spindle machine also includes an eccentricity generating device, and the eccentricity generating device is electrically connected to the controller.

[0012] Furthermore, the calibration device is equipped with at least two test spindles, and the two test spindles have respective eccentricity values.

[0013] High-speed electric spindle eccentricity tester calibration method, the method is:

[0014] The controller receives the start command and speed parameters;

[0015] The controller transmits the start command speed parameter to the high-speed electric spindle machine, and the spindle drive system drives the test spindle to rotate at a high speed determined by the speed parameter;

[0016] At the speed determined by the speed parameter, the standard eccentricity value of the test spindle is measured by a laser displacement sensor, and the measured eccentricity value of the test spindle is measured by a high-speed electric spindle eccentricity tester;

[0017] The data processor acquires a rotation speed parameter, a standard eccentricity value corresponding to the rotation speed parameter, and a measured eccentricity value corresponding to the rotation speed parameter, and obtains comparison result information corresponding to the rotation speed parameter;

[0018] The data processor outputs the speed parameter and comparison result information.

[0019] Furthermore, in the aforementioned method, during the process of the spindle drive system driving the test spindle to rotate at high speed, the controller receives the set eccentricity value information and transmits the set eccentricity value information to the high-speed electric spindle machine, and the eccentricity generating device applies the corresponding eccentricity to the test spindle;

[0020] At the rotation speed determined by the rotation speed parameter, the standard eccentricity value of the test spindle is measured by a laser displacement sensor, and the measured eccentricity value of the test spindle is measured by a high-speed electric spindle eccentricity tester;

[0021] The data processor acquires the rotation speed parameter, the standard eccentricity value corresponding to the rotation speed parameter, the measured eccentricity value corresponding to the rotation speed parameter, and the set eccentricity value information, and obtains the comparison result information corresponding to the rotation speed parameter;

[0022] The data processor outputs the speed parameter and comparison result information.

[0023] Furthermore, in the aforementioned method, the test spindle with the first eccentricity value is first installed on the high-speed electric spindle machine, and rotated at a high speed determined by a speed parameter to obtain first comparison result information corresponding to the speed parameter;

[0024] The test spindle with the second eccentricity value is then installed on the high-speed electric spindle machine, and rotated at a high speed determined by the speed parameter to obtain second comparison result information corresponding to the speed parameter.

[0025] The advantages or principles of the present invention are described below:

[0026] 1. When in use, first place the high-speed electric spindle eccentricity tester on the tester placement platform, then start the calibration device through the controller, and output the speed parameter to the high-speed electric spindle machine through the controller. The high-speed electric spindle machine rotates at a high speed under the set speed parameter, and the standard eccentricity value of the test spindle is measured by the laser displacement sensor, and the measured eccentricity value of the test spindle is measured by the high-speed electric spindle eccentricity tester; then the two data values ​​are transmitted to the data processor for comparison and processing, and the difference between the measured value and the standard value of the high-speed electric spindle eccentricity tester is obtained, and the high-speed electric spindle eccentricity tester is calibrated; the present invention can enable the high-speed electric spindle machine to perform measurements under high-speed operation, and has stronger versatility.

[0027] 2. There are three laser displacement sensors, through which the two-dimensional offset of the test spindle on the plane can be sensed, with a simple structure and good detection effect.

[0028] 3. It also includes a cooling system, through which the high-speed electric spindle machine can be cooled to avoid high temperature generated when running at high speed, thereby improving the stability and service life of the high-speed electric spindle machine when rotating at high speed.

[0029] 4. It also includes an air compressor, which provides high-pressure air. The high-pressure air is input to the test spindle and puts the test spindle in an air suspension state when it rotates at high speed, thereby reducing the friction force when it rotates at high speed.

[0030] 5. The high-speed electric spindle machine also includes an eccentricity generating device. The controller can send instructions to the eccentricity generating device, and the eccentricity generating device generates an eccentricity value, and then compares the standard eccentricity value and the measured eccentricity value under the eccentricity state. The device can set different test speeds and different test eccentricity values, and can more comprehensively evaluate and calibrate the high-speed electric spindle eccentricity tester; or,

[0031] The calibration device is equipped with at least two test spindles, and the two test spindles have respective eccentricity values. When calibrating, the test spindle with a first eccentricity value is first installed on the high-speed electric spindle machine, and rotated at a high speed determined by a speed parameter to obtain first comparison result information corresponding to the speed parameter. Then, the test spindle with a second eccentricity value is installed on the high-speed electric spindle machine, and rotated at a high speed determined by the speed parameter to obtain second comparison result information corresponding to the speed parameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the use of the calibration device of the high-speed electric spindle eccentricity tester of the present invention;

[0033] Description of reference numerals:

[0034] 10. Base, 11. High-speed electric spindle machine, 12. Test spindle, 13. Tester placement platform, 14. Cooling system, 15. Air compressor, 21. Controller, 22. Laser displacement sensor, 23. Data processor, 30. High-speed electric spindle eccentricity tester. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below.

[0036] like Figure 1 As shown, a calibration device for a high-speed electric spindle eccentricity tester includes a base 10, on which a high-speed electric spindle machine 11 is installed. The high-speed electric spindle machine 11 has a spindle drive system and a test spindle 12 (the calibration device is equipped with a plurality of test spindles 12, each test spindle 12 has its own eccentricity value, and the specifications are set in advance as needed), the test spindle 12 is connected to the spindle drive system, a tester placement platform 13 is provided on the base 10, and the test spindle 12 faces the tester placement platform 13; it also includes a controller 21 for controlling the spindle drive system and at least two laser displacement sensors 22, the laser displacement sensor 22 faces the test spindle 12, and the optical axes of the laser displacement sensors 22 intersect, and the laser displacement sensor 22 and the controller 21 are both electrically connected to a data processor 23.

[0037] There are three laser displacement sensors 22, all of which are facing the test spindle 12, and their optical axes intersect, the planes where the three laser displacement sensors 22 are located are perpendicular to the test spindle 12, and the optical axes of two adjacent laser displacement sensors 22 form an angle of 120 degrees.

[0038] It also includes a cooling system 14 and an air compressor 15. The high-speed electric spindle machine 11 has a cooling inlet and a cooling outlet, and the cooling system 14 is connected to the cooling inlet and the cooling outlet. The main part of the high-speed electric spindle machine 11 has a supporting shaft hole, and the test spindle 12 is installed in the supporting shaft hole. The air compressor 15 is connected to the supporting shaft hole through a high-pressure air pipe.

[0039] The calibration method of the high-speed electric spindle eccentricity tester adopted in this embodiment is:

[0040] Under the action of the controller 21, a start instruction and a speed parameter are received; the controller 21 transmits the start instruction speed parameter to the high-speed electric spindle machine 11, and the spindle drive system drives the test spindle 12 to rotate at a high speed according to the speed parameter; at the speed determined by the speed parameter, the standard eccentricity value of the test spindle 12 is measured by the laser displacement sensor 22, and the measured eccentricity value of the test spindle 12 is measured by the high-speed electric spindle eccentricity tester; the data processor 23 obtains the speed parameter, the standard eccentricity value corresponding to the speed parameter, and the measured eccentricity value corresponding to the speed parameter, and obtains the comparison result information corresponding to the speed parameter; the data processor 23 outputs the speed parameter and the comparison result information.

[0041] During the process of the spindle drive system driving the test spindle 12 to rotate at high speed, the controller 21 receives the set eccentricity value information and transmits the set eccentricity value information to the high-speed electric spindle machine 11, and the eccentricity generating device applies the corresponding eccentricity to the test spindle 12; at the speed determined by the speed parameter, the standard eccentricity value of the test spindle 12 is measured by the laser displacement sensor 22, and the measured eccentricity value of the test spindle 12 is measured by the high-speed electric spindle eccentricity tester; the data processor 23 obtains the speed parameter, the standard eccentricity value corresponding to the speed parameter, the measured eccentricity value corresponding to the speed parameter, and the set eccentricity value information, and obtains the comparison result information corresponding to the speed parameter; the data processor 23 outputs the speed parameter and the comparison result information.

[0042] This embodiment has the following advantages:

[0043] 1. When in use, first place the high-speed electric spindle eccentricity tester 30 on the tester placement platform 13, then start the calibration device through the controller 21, and output the speed parameter to the high-speed electric spindle machine 11 through the controller 21. The high-speed electric spindle machine 11 rotates at a high speed under the set speed parameter, and the standard eccentricity value of the test spindle 12 is measured by the laser displacement sensor 22, and the measured eccentricity value of the test spindle 12 is measured by the high-speed electric spindle eccentricity tester; then the two data values ​​are transmitted to the data processor 23 for comparison and processing, and the difference between the measured value and the standard value of the high-speed electric spindle eccentricity tester is obtained, and the high-speed electric spindle eccentricity tester is calibrated; the present invention can enable the high-speed electric spindle machine 11 to perform measurements under high-speed operation, and has stronger versatility.

[0044] 2. There are three laser displacement sensors 22, through which the two-dimensional offset of the test spindle 12 on the plane can be sensed, with a simple structure and good detection effect.

[0045] 3. It also includes a cooling system 14, through which the high-speed electric spindle machine 11 can be cooled to avoid high temperature generated when it is running at high speed, thereby improving the stability and service life of the high-speed electric spindle machine 11 when rotating at high speed.

[0046] 4. It also includes an air compressor 15, which provides high-pressure air. The high-pressure air is input to the test spindle 12, and the test spindle 12 is in an air suspension state when rotating at a high speed, thereby reducing the friction force when rotating at a high speed.

[0047] 5. During calibration, first install the test spindle 12 with a first eccentricity value on the high-speed electric spindle machine 11, and rotate it at a high speed determined by the speed parameter to obtain first comparison result information corresponding to the speed parameter; then install the test spindle 12 with a second eccentricity value on the high-speed electric spindle machine 11, and rotate it at a high speed determined by the speed parameter to obtain second comparison result information corresponding to the speed parameter. The specific number and specifications of the test spindles 12 to be installed shall be selected according to the needs of calibration.

[0048] The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereto; any replacement and improvement made on the basis of not violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A calibration method for a high-speed electric spindle eccentricity tester, characterized in that: A high-speed electric spindle eccentricity tester calibration device is applied to the calibration method, the high-speed electric spindle eccentricity tester calibration device comprises a base, a high-speed electric spindle machine is installed on the base, the high-speed electric spindle machine has a spindle drive system and a test spindle, the test spindle is connected to the spindle drive system, a tester placement platform is provided on the base, the test spindle faces the tester placement platform; the device also comprises a controller for controlling the spindle drive system and at least two laser displacement sensors, the laser displacement sensors face the test spindle, and the optical axes of the laser displacement sensors intersect, and the laser displacement sensors and the controller are both electrically connected to a data processor; The calibration method comprises the following steps: The controller receives the start command and speed parameters; The controller transmits the start command speed parameter to the high-speed electric spindle machine, and the spindle drive system drives the test spindle to rotate at a high speed determined by the speed parameter; When the spindle drive system drives the test spindle to rotate at high speed, the controller receives the set eccentricity value information and transmits the set eccentricity value information to the high-speed electric spindle machine, and the eccentricity generating device applies the corresponding eccentricity to the test spindle; At the speed determined by the speed parameter, the standard eccentricity value of the test spindle is measured by a laser displacement sensor, and the measured eccentricity value of the test spindle is measured by a high-speed electric spindle eccentricity tester; The data processor acquires the rotation speed parameter, the standard eccentricity value corresponding to the rotation speed parameter, the measured eccentricity value corresponding to the rotation speed parameter, and the set eccentricity value information, and obtains the comparison result information corresponding to the rotation speed parameter; The data processor outputs the speed parameter and comparison result information.

2. The calibration method of the high-speed electric spindle eccentricity tester according to claim 1, characterized in that: There are three laser displacement sensors, and all of the three laser displacement sensors face the test spindle, and their optical axes intersect.

3. The calibration method of the high-speed electric spindle eccentricity tester as claimed in claim 2, characterized in that: The planes where the three laser displacement sensors are located are perpendicular to the test main axis, and the optical axes of two adjacent laser displacement sensors form an angle of 120 degrees.

4. The calibration method of the high-speed electric spindle eccentricity tester according to any one of claims 1 to 3, characterized in that: It also includes a cooling system. The high-speed electric spindle machine has a cooling liquid inlet and a cooling liquid outlet. The cooling system is connected to the cooling liquid inlet and the cooling liquid outlet.

5. The calibration method of the high-speed electric spindle eccentricity tester according to any one of claims 1 to 3, characterized in that: It also includes an air compressor. The main body of the high-speed electric spindle machine has a supporting shaft hole. The test spindle is installed in the supporting shaft hole. The air compressor is connected to the supporting shaft hole through a high-pressure air pipe.

6. The calibration method of the high-speed electric spindle eccentricity tester according to any one of claims 1 to 3, characterized in that: The high-speed electric spindle machine also includes an eccentricity generating device, and the eccentricity generating device is electrically connected to the controller.

7. The calibration method of the high-speed electric spindle eccentricity tester according to any one of claims 1 to 3, characterized in that: The calibration device is equipped with at least two test spindles, and the two test spindles have respective eccentricity values.

8. The calibration method of the high-speed electric spindle eccentricity tester according to claim 1, characterized in that: In the aforementioned method, Firstly, the test spindle with the first eccentricity value is installed on the high-speed electric spindle machine, and rotates at a high speed determined by a speed parameter to obtain first comparison result information corresponding to the speed parameter; The test spindle with the second eccentricity value is then installed on the high-speed electric spindle machine, and rotated at a high speed determined by the speed parameter to obtain second comparison result information corresponding to the speed parameter.

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