Device and method for testing rotating speed of main shaft of high-precision printed circuit board numerical control machine tool

Abstract

The invention provides a high-precision printed circuit board numerical control machine tool spindle rotating speed testing device and method. The method comprises the following steps: placing a cutter corresponding to a to-be-tested area on a test board, and setting the depth of the cutter drilling into the test area; setting the rotating speed of the main shaft, and aligning infrared rays emitted by the infrared test gun to the photosensitive paper; a servo motor is started, a drilling instruction is executed, and the operation is stopped after the set depth is reached; and recording the actual rotating speed of the cutter by using photosensitive paper, comparing the actual rotating speed with the set rotating speed of the main shaft, judging whether the actual running state of the servo main shaft is in a normal level or not, and obtaining a test result. According to the invention, the service performance state of the machine tool servo main shaft can be accurately detected, proper products are specifically selected for processing, the service life of equipment is effectively prolonged, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of printed circuit board manufacturing, and in particular to a device and method for testing the spindle speed of a high-precision printed circuit board numerical control machine tool. Background Art

[0002] The performance, accuracy, efficiency and stability of CNC machine tools for high-precision printed circuit boards are important guarantees for high-quality production, especially the speed accuracy of the servo spindle is an important basis for technical personnel to carry out standardized design. In the actual production process, especially for ultra-thick copper, ultra-thickness, ultra-hardness, metal-based, ceramic-based, aluminum-based, high-frequency and high-speed materials When machining the above large-diameter holes, the actual speed of the servo spindle deviates from the set speed by 20%-100% due to excessive cutting resistance, often leading to tool breakage, machine blockage, machine tool damage, product abandonment, etc., which greatly hinders normal production, causes huge losses to enterprises, and causes great resistance and deviation to the scientific and technological innovation effects and directions of engineering and technical personnel. At present, the industry's technical treatment of this phenomenon is still in its infancy, and there is no mature method to deal with it.

[0003] Therefore, it is necessary to provide a testing device that can test the actual speed of the servo spindle drilling into the same depth under different spindle speeds and different material properties, so as to assist in formulating the operating standards of CNC machine tools. Summary of the invention

[0004] According to the technical problems raised above, a high-precision printed circuit board CNC machine tool spindle speed test device and method are provided. The present invention mainly uses a tool, photosensitive paper, a servo motor and an infrared test gun to accurately detect the service performance status of the machine tool servo spindle, select suitable products for processing, effectively extend the service life of the equipment, and improve production efficiency.

[0005] The technical means adopted by the present invention are as follows:

[0006] A high-precision printed circuit board CNC machine tool spindle speed test device, used in a special CNC machine tool for printed circuit boards, includes: a tool, photosensitive paper, a servo motor and an infrared test gun, wherein:

[0007] The tool is installed on the servo spindle of the CNC machine tool and is used to perform large-diameter processing on the test plate; the photosensitive paper is arranged on the outside of the drill ring, the servo motor is installed on the top of the servo spindle, and the infrared test gun can emit infrared rays.

[0008] Furthermore, the rotation speed of the drill collar is synchronized with that of the cutter.

[0009] Furthermore, the infrared rays emitted by the infrared testing gun can fall on photosensitive paper to record the rotation speed of the tool.

[0010] Furthermore, the test plate includes a variety of materials of different thicknesses, and is used to test the rotation speed of the tool when processing different material properties.

[0011] The present invention also includes a high-precision printed circuit board CNC machine tool spindle speed testing method corresponding to the high-precision printed circuit board CNC machine tool spindle speed testing device, and the specific steps include:

[0012] Place the tool in correspondence with the area to be tested on the test board and set the depth of the tool into the test area;

[0013] Set the spindle speed and aim the infrared rays emitted by the infrared test gun at the photosensitive paper;

[0014] Turn on the servo motor, execute the drilling command, and stop when the set depth is reached;

[0015] The actual speed of the tool is recorded using photosensitive paper, and the actual speed is compared with the set spindle speed to determine whether the actual operating state of the servo spindle is at a normal level and obtain the test result.

[0016] Furthermore, by measuring the actual speed of a normal servo spindle drilling to the same depth at different spindle speeds and different material properties, the operating standard of the CNC machine tool is established.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The high-precision printed circuit board CNC machine tool spindle speed test device and method provided by the present invention place the tool and the area to be tested on the test board in correspondence, set the depth of the tool drilling into the test area; set the spindle speed, and aim the infrared rays emitted by the infrared test gun at the photosensitive paper; turn on the servo motor, execute the drilling command, and stop after reaching the set depth; use photosensitive paper to record the actual speed of the tool, and compare the actual speed with the set spindle speed to determine whether the actual operating state of the servo spindle is at a normal level, and obtain the test result. The present invention can make accurate detection of the service performance state of the machine tool servo spindle, select suitable products for processing in a targeted manner, effectively extend the service life of the equipment, and improve production efficiency.

[0019] Based on the above reasons, the present invention can be widely promoted in the fields of printed circuit board manufacturing and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 The present invention is a schematic structural diagram of a spindle speed testing device for a high-precision printed circuit board CNC machine tool.

[0022] Figure 2 Schematic diagram of the test board structure in an embodiment of the present invention.

[0023] Figure 3 The present invention is a flow chart of the method for testing the spindle speed of a CNC machine tool for a high-precision printed circuit board.

[0024] In the figure: 1. tool; 2. photosensitive paper; 3. servo motor; 4. infrared; 5. infrared test gun; 6. 8 times the conventional copper thickness; 7. 6 times the conventional copper thickness; 8. 4 times the conventional copper thickness; 9. 2 times the conventional copper thickness; 10. 1 times the conventional copper thickness; 11. conventional plate material; 12. metal substrate material; 13. aluminum substrate material; 14. high-frequency microwave board material; 15. spindle test speed is S = 20krpm; 16. spindle test speed is S = 40krpm; 17. spindle test speed is S = 60krpm; 18. spindle test speed is S = 80krpm; 19. spindle test speed is S = 100krpm; 20. spindle test speed is S = 120krpm; 21. spindle test speed is S = 140krpm; 22. spindle test speed is S = 160krpm; 23. spindle test speed is S = 180krpm. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0029] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0030] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0031] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0032] like Figure 1 As shown, the present invention provides a high-precision printed circuit board CNC machine tool spindle speed test device, which is applied to a special CNC machine tool for printed circuit boards, comprising: a tool 1, a photosensitive paper 2, a servo motor 3 and an infrared test gun 5, wherein:

[0033] The tool 1 is installed on the servo spindle of the CNC machine tool and is used to perform large-diameter processing on the test plate; the photosensitive paper 2 is set on the outside of the drill ring, the servo motor 3 is installed on the top of the servo spindle, and the infrared test gun 5 can emit infrared rays 4.

[0034] During specific implementation, as a preferred embodiment of the present invention, the rotation speed of the drill collar is synchronized with that of the tool 1 .

[0035] During specific implementation, as a preferred embodiment of the present invention, the infrared ray 4 emitted by the infrared testing gun 5 can fall on the photosensitive paper 2 to record the rotation speed of the tool 1 .

[0036] In specific implementation, as a preferred embodiment of the present invention, the test plate includes a variety of materials with different thicknesses, which are used to test the rotation speed of the tool 1 when processing different material properties.

[0037] Corresponding to the high-precision printed circuit board CNC machine tool spindle speed test device in this application, this application also provides a high-precision printed circuit board CNC machine tool spindle speed test method, the specific steps include:

[0038] Place the tool 1 in correspondence with the area to be tested on the test board, and set the depth of the tool 1 drilling into the test area;

[0039] Set the spindle speed and aim the infrared ray 4 emitted by the infrared test gun 5 at the photosensitive paper 2;

[0040] Turn on the servo motor 3, execute the drilling command, and stop after reaching the set depth;

[0041] The actual rotation speed of the tool 1 is recorded by using the photosensitive paper 2, and the actual rotation speed is compared with the set spindle speed to determine whether the actual operating state of the servo spindle is at a normal level, thereby obtaining a test result.

[0042] In specific implementation, as a preferred embodiment of the present invention, the operating standard of the CNC machine tool is formulated by measuring the actual rotation speed of a normal servo spindle drilling into the same depth at different spindle speeds and different material properties.

[0043] Example

[0044] like Figure 1 As shown, the present invention provides a high-precision printed circuit board CNC machine tool spindle speed test device and method. The test board in this embodiment is as follows Figure 2 As shown, the test board is made of different materials and different copper foil thicknesses. The board thickness is 3-6mm, and the conventional copper layer thickness is 0.070mm. The test board is divided into 9 rows and 9 columns of test areas. The test conditions of each area are different. Each column represents a material property, and each row represents a spindle test speed. The spindle test speed range is 20-180krpm. Tool selection The width of the middle test area is 200mm, and the left and right sides of the area spread outward. The row and column spacing of each area is 100mm.

[0045] Before testing, remove the spindle presser bushing and turn off the sensor alarm device; insert tool 1 into the servo spindle and stick a layer of photosensitive material around the drill collar; set the spindle speed to 20, 40, 60, 80, 100, 120, 140, 160, and 180 respectively.

[0046] Execute drilling instructions in different areas 6-14 respectively, and set the tool to drill into the test board to a depth of 2.0 mm; use the infrared light emitted by the infrared test gun 5 to aim at the photosensitive paper, and record the actual rotation speed under different belts;

[0047] By comparing the actual speed value with the set speed value, it can be determined whether the actual operating status of the servo spindle is at a normal level, providing an important basis for the formulation of design specifications and operating standards and the resolution of key issues.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-precision printed circuit board CNC machine tool spindle speed test device, used in a CNC machine tool dedicated to printed circuit boards, characterized in that: include: A cutter (1), photosensitive paper (2), a servo motor (3) and an infrared test gun (5), wherein: The tool (1) is mounted on a servo spindle of a numerically controlled machine tool and is used to perform large-diameter processing on a test plate; the photosensitive paper (2) is arranged on the outside of a drill ring, the servo motor (3) is mounted on the top of the servo spindle, and the infrared test gun (5) is capable of emitting infrared rays (4).

2. The high-precision printed circuit board CNC machine tool spindle speed test device according to claim 1 is characterized in that: The rotation speed of the drill ring is synchronized with that of the tool (1).

3. The high-precision printed circuit board CNC machine tool spindle speed test device according to claim 1, characterized in that: The infrared rays (4) emitted by the infrared testing gun (5) can fall on the photosensitive paper (2) and are used to record the rotation speed of the tool (1).

4. The high-precision printed circuit board CNC machine tool spindle speed test device according to claim 1, characterized in that: The test plate comprises a plurality of materials of different thicknesses and is used for testing the rotation speed of the tool (1) when processing materials with different properties.

5. A method for testing the spindle speed of a high-precision printed circuit board CNC machine tool based on the spindle speed testing device for a high-precision printed circuit board CNC machine tool according to any one of claims 1 to 4, characterized in that: The specific steps include: Place the tool (1) in correspondence with the area to be tested on the test plate, and set the depth of the tool (1) drilling into the test area; The spindle speed is set, and the infrared rays (4) emitted by the infrared test gun (5) are directed toward the photosensitive paper (2); Turn on the servo motor (3), execute the drilling command, and stop after reaching the set depth; The actual rotation speed of the tool (1) is recorded using photosensitive paper (2), and the actual rotation speed is compared with the set spindle rotation speed to determine whether the actual operating state of the servo spindle is at a normal level, thereby obtaining a test result.

6. The method for testing the spindle speed of a CNC machine tool for a high-precision printed circuit board according to claim 5, characterized in that: The operating standards for CNC machine tools are established by measuring the actual speed of a normal servo spindle drilling to the same depth at different spindle speeds and different material properties.

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