Composite grinding and debugging method and equipment for dielectric filter

Abstract

The present invention relates to a composite grinding and debugging device for dielectric filters, including a frame, on which are installed: a product delivery mechanism for supplying dielectric filters to be debugged and storing dielectric filters that have been debugged; a fixed tool for positioning and fixing the dielectric filters to be debugged; an XYZ three-axis platform, on which a filter suction cup is installed, for moving the dielectric filter between the product delivery mechanism and the fixed tool; a grinding pen grinding mechanism is also installed on the XYZ three-axis platform, for grinding and debugging the side wall of the dielectric filter on the fixed tool; an XZ two-axis platform, on which a laser grinding component is installed, and the laser grinding component is used to grind the bottom wall of the dielectric filter on the fixed tool. The present invention solves the problem that the grinding and debugging of dielectric filters in the existing industry urgently needs to be automated, and adopts a composite method of laser grinding and grinding pen grinding to make product debugging more efficient and more precisely controlled.

Description

Technical Field

[0001] The present invention belongs to the technical field of 5G communication products, and specifically relates to a composite polishing and debugging method and equipment for a dielectric filter. Background Art

[0002] Since the beginning of telecommunications, filters have played an important role in circuits and have made continuous progress with the development of communication technology. In the field of modern communication technology, there is almost no branch that is not affected by digital filtering technology. Source coding, channel coding, modulation, multiplexing, data compression, and adaptive channel equalization all widely use digital filters, especially in digital communication, network communication, image communication and other applications. Without filters, it is almost impossible to move forward.

[0003] With the advent of the 5G era, new communication systems require the development of a technology that can extract and detect signals within a specific frequency band. The development of this technology has further accelerated the research and development of filter technology, and new 5G filters are already in intensive production. A filter is a microwave device that limits the operating frequency band of a base station. It is divided into four types: low-pass, high-pass, band-pass, and band-stop filters according to the frequency band of the signal passing through. Each filter has a pre-set frequency range. In the test device, the frequency selection function of the filter can be used to filter out interference noise or perform spectrum analysis.

[0004] Dielectric filters are designed and manufactured using the characteristics of dielectric ceramic materials such as low loss, high dielectric constant, small frequency temperature coefficient and thermal expansion coefficient, and high power tolerance. Dielectric filters are microwave filters that use dielectric resonant cavities through multi-stage coupling to achieve frequency selection. After entering the 21st century, dielectric filters have gradually moved from laboratories to production lines after long-term accumulation in theory and practice. Dielectric filters have been widely used in mobile communications and microwave communications due to their advantages of miniaturization, low loss, and good temperature characteristics. They are characterized by low insertion loss, good power resistance, and narrow bandwidth, and are particularly suitable for stage-coupling filtering of CT1, CT2, 900MHz, 1.8GHz, 2.4GHz, 5.8GHz, portable phones, car phones, wireless headphones, wireless microphones, radio stations, cordless phones, and integrated transceiver duplexers.

[0005] like Fig.12 As shown in the figure, the surface of the dielectric filter is covered with a silver-plated area with a zero tangential electric field. A polishing pen is used to polish the silver-plated area on the surface of the product to achieve qualified filter debugging indicators. The use of dielectric filters in 5G filters has become an industry trend. With the widespread use of 5G communication technology, dielectric filters will be mass-produced on a large scale. Faced with industry problems, dielectric filter debugging urgently needs to be automated. Summary of the invention

[0006] The purpose of the present invention is to provide a composite grinding and debugging method and equipment for dielectric filters, which is used to solve the problem that the grinding and debugging of dielectric filters in the existing industry urgently need to realize automated debugging, and adopts a method in which both laser grinding and grinding pen grinding coexist to make product debugging more efficient and the debugging indicators more accurately controlled.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A composite grinding and debugging method for a dielectric filter is characterized by using a grinding pen and a laser to grind the dielectric filter 7.

[0009] Furthermore, the side walls of the dielectric filter 7 are first polished with a polishing pen, and then the bottom wall of the dielectric filter 7 is polished with a laser; or, the bottom wall of the dielectric filter 7 is first polished with a laser, and then the side walls of the dielectric filter 7 are polished with a polishing pen.

[0010] A dielectric filter composite polishing and debugging device, characterized in that it comprises a frame 1, on which are mounted:

[0011] A product distribution mechanism 3, used for supplying dielectric filters 7 to be debugged and storing dielectric filters 7 that have been debugged;

[0012] A fixing tool 4, used for positioning and fixing the dielectric filter 7 to be debugged;

[0013] An XYZ three-axis platform 2, on which a filter suction cup 9 is installed, which is used to move the dielectric filter 7 between the product delivery mechanism 3 and the fixed tooling 4; a grinding pen grinding mechanism 6 is also installed on the XYZ three-axis platform 2, which is used to grind and debug the side wall of the dielectric filter 7 on the fixed tooling 4;

[0014] An XZ two-axis platform 11 is provided with a laser polishing assembly 12 , and the laser polishing assembly 12 is used to polish the bottom wall of the dielectric filter 7 on the fixed fixture 4 .

[0015] Furthermore, the product distribution mechanism 3 is a tray loading mechanism, including a loading tray for supplying the dielectric filter 7 to be debugged and a unloading tray for storing the dielectric filter 7 that has been debugged; or, the product distribution mechanism 3 includes two conveyor belts, one of which is used to input the dielectric filter 7 to be debugged, and the other is used to output the dielectric filter 7 that has been debugged.

[0016] Furthermore, the fixing tool 4 comprises a tooling table 41 , on which a right-angle positioning block 42 and two fixing cylinders 43 are provided. The two fixing cylinders 43 are used to fix the dielectric filter 7 on the right-angle positioning block 42 from two directions.

[0017] Furthermore, the fixed tooling 4 includes a tooling bracket 44, the middle of the tooling bracket 44 is a fixed station of the dielectric filter 7, and a rotating pressure plate 46 is provided on each side of the fixed station, which is used to press and fix the dielectric filter 7 from both sides; two rotating drive cylinders 45 are also provided on the tooling bracket 44, and the middle part of the rotating pressure plate 46 is installed on the tooling bracket 44 through a hinge frame 47, and the end of the rotating pressure plate 46 away from the fixed station is hinged to the corresponding rotating drive cylinder 45, and the rotating drive cylinder 45 is used to drive the rotating pressure plate 46 to rotate.

[0018] Furthermore, the grinding pen grinding mechanism 6 includes a grinding pen 62, and the grinding pen 62 is fixedly installed on the Z-axis through a mounting bracket 61; the grinding pen 62 is connected to the mounting bracket 61 through a floating connecting piece, and the grinding pen 62 floats in the vertical direction; the floating connecting piece includes a fixed seat 66 and a suspension rod 67, and the fixed seat 66 and the suspension rod 67 are linearly slidably connected, the grinding pen 62 is fixedly connected to the fixed seat 66, and the suspension rod 67 is fixedly connected to the mounting bracket 61.

[0019] Furthermore, the mounting bracket 61 is also provided with a height locking cylinder 64 and a height detection sensor 68. The height locking cylinder 64 is used to lock the fixed seat 66, and the height detection sensor 68 is used to detect whether the fixed seat 66 rises relative to the height detection sensor 68. When it is detected that the fixed seat 66 rises, the height locking cylinder 64 locks the fixed seat 66.

[0020] Furthermore, a plurality of grinding pens 62 of different specifications are installed on the mounting bracket 61, and each grinding pen 62 is equipped with a grinding pen switching cylinder 65, and the grinding pen switching cylinder 65 is fixedly installed on the mounting bracket 61; the output end of the grinding pen switching cylinder 65 is connected to the suspension rod 67 for driving the suspension rod 67 to move up and down.

[0021] Furthermore, a dust suction pipe 63 for dust suction is also provided on the mounting bracket 61 , and the dust suction pipe 63 is aligned with the grinding head of the grinding pen 62 .

[0022] The beneficial effects of the present invention are as follows: the present invention uses automated equipment and automatic polishing pens to polish the silver-plated area on the surface of ceramic dielectrics to achieve qualified filter debugging indicators, which is used to solve the problem of the existing industry that the medium filter polishing and debugging urgently needs to be automated; the debugging equipment uses both laser polishing and polishing pen polishing, and because of the integration of laser polishing, product debugging is more efficient and the debugging indicators are more accurately controlled. Laser polishing and debugging mainly utilizes its high efficiency and precision characteristics to polish and debug the bottom wall of the product; but its laser is difficult to irradiate the side wall of the hole on the product. At this time, the advantages of the polishing pen debugging are taken, and the polishing pen is used to polish and debug the side wall of the inner hole of the product, and the advantages of both are taken. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall schematic diagram of the dielectric filter composite grinding and debugging equipment in the embodiment Figure 1 .

[0024] Figure 2 The overall schematic diagram of the dielectric filter composite grinding and debugging equipment in the embodiment Figure 1 .

[0025] Figure 3 A partial three-dimensional schematic diagram of the dielectric filter composite grinding and debugging equipment in the embodiment Figure 1 .

[0026] Figure 4 for Figure 3 Enlarged schematic diagram of part A in the middle.

[0027] Figure 5 It is a three-dimensional schematic diagram of the grinding mechanism of the grinding pen in the embodiment.

[0028] Figure 6 Schematic diagram of the interior of the grinding mechanism of the grinding pen in the embodiment.

[0029] Figure 7 It is a front schematic diagram of the grinding mechanism of the grinding pen in the embodiment.

[0030] Figure 8 for Figure 7 Schematic diagram of the CC section.

[0031] Fig. 9 It is a side view of the grinding mechanism of the grinding pen in the embodiment.

[0032] Fig.10 A partial three-dimensional schematic diagram of the dielectric filter composite grinding and debugging equipment in the embodiment Figure 2 .

[0033] Fig.11 for Fig.10 Enlarged schematic diagram of part B in the middle.

[0034] Fig.12 It is a three-dimensional schematic diagram of a dielectric filter.

[0035] In the figure: 1-frame, 2-XYZ three-axis platform, 3-product delivery mechanism, 4-fixed tooling, 5-network analyzer, 6-polishing pen polishing mechanism, 7-dielectric filter, 8-visual positioning module, 9-filter suction cup; 11-XZ two-axis platform, 12-laser polishing component; 41-tooling table, 42-right-angle positioning block, 43-fixed cylinder, 44-tooling bracket, 45-rotation drive cylinder, 46-rotation pressure plate, 47-articulated frame; 61-mounting bracket, 62-polishing pen, 63-dust suction duct, 64-height locking cylinder, 65-polishing pen switching cylinder, 66-fixed seat, 67-suspender rod, 68-height detection sensor; 91-suction cup lifting cylinder. DETAILED DESCRIPTION

[0036] In order to better understand the present invention, the technical solution of the present invention is further described below in conjunction with embodiments.

[0037] like Figure 1 , 2 As shown, a dielectric filter composite grinding and debugging device comprises a frame 1, on which a product delivery mechanism 3, a fixing tool 4, an XYZ three-axis platform 2 and an XZ two-axis platform 11 are installed.

[0038] like Figure 1 , 2 As shown, a laser polishing assembly 12 is installed on the Z axis of the XZ two-axis platform 11 , and the laser polishing assembly 12 is used to polish the bottom wall of the dielectric filter 7 on the fixed tooling 4 .

[0039] like Figure 1 , 2 As shown in , 3, the product distribution mechanism 3 is used to supply the dielectric filters 7 to be debugged and to store the dielectric filters 7 that have been debugged; the product distribution mechanism 3 is a tray loading mechanism (or a double tray switching structure), including a loading tray for supplying the dielectric filters 7 to be debugged and a unloading tray for storing the dielectric filters 7 that have been debugged.

[0040] like Figure 4 As shown, the fixing tool 4 is used to position and fix the dielectric filter 7 to be debugged; the fixing tool 4 includes a tooling table 41, on which a right-angle positioning block 42 and two fixing cylinders 43 are provided. The two fixing cylinders 43 are used to fix the dielectric filter 7 on the right-angle positioning block 42 from two directions.

[0041] like Figure 1 , 2As shown in 3, the XYZ three-axis platform 2 has a filter suction cup 9 installed on the Z axis of the XYZ three-axis platform 2, which is used to move the dielectric filter 7 between the product delivery mechanism 3 and the fixed tooling 4; the XYZ three-axis platform 2 also has a grinding pen grinding mechanism 6 installed on the Z axis, which is used to grind and debug the dielectric filter 7 on the fixed tooling 4.

[0042] like Figure 5 , 6 As shown in Figures 7, 8 and 9, the grinding pen grinding mechanism 6 includes a grinding pen 62, and the grinding pen 62 is fixedly mounted on the Z axis through a mounting bracket 61. The grinding pen 62 is connected to the mounting bracket 61 through a floating connector, and the grinding pen 62 floats in the vertical direction. The floating connector includes a fixed seat 66 and a suspension rod 67, and the fixed seat 66 and the suspension rod 67 are linearly slidably connected. The grinding pen 62 is fixedly connected to the fixed seat 66, and the suspension rod 67 is fixedly connected to the mounting bracket 61. A height locking cylinder 64 and a height detection sensor 68 are also provided on the mounting bracket 61. The height locking cylinder 64 is used to lock the fixed seat 66, and the height detection sensor 68 is used to detect whether the fixed seat 66 rises relative to the height detection sensor 68. When it is detected that the fixed seat 66 rises, the height locking cylinder 64 locks the fixed seat 66.

[0043] like Figure 6 As shown, the mounting bracket 61 is equipped with a plurality of (preferably two) grinding pens 62 of different specifications, each grinding pen 62 is equipped with a grinding pen switching cylinder 65, and the grinding pen switching cylinder 65 is fixedly mounted on the mounting bracket 61; the output end of the grinding pen switching cylinder 65 is connected to the suspension rod 67, which is used to drive the suspension rod 67 to move up and down. It can meet the grinding of different apertures and cavity arm gaps on the dielectric filter 7 product; two grinding pens 62 are switched for use through two grinding pen switching cylinders 65.

[0044] like Figure 5 As shown, the mounting bracket 61 is also provided with a dust suction pipe 63 for dust suction, and the dust suction pipe 63 is aligned with the grinding head of the grinding pen 62 .

[0045] like Figure 5 As shown, the filter suction cup 9 is mounted on the mounting bracket 61 via a suction cup lifting cylinder 91, or is mounted on the Z axis of the XYZ three-axis platform 2.

[0046] like Figure 6 , 7 As shown, a visual positioning module 8 may also be installed on the mounting bracket 61 .

[0047] like Figure 1 , 2As shown, a network analyzer 5 for detecting whether the dielectric filter 7 has been debugged can also be installed on the rack 1.

[0048] The use process of this dielectric filter composite grinding and debugging equipment:

[0049] The composite polishing and debugging method includes using a polishing pen to polish the side wall of the dielectric filter 7, and using a laser to polish the bottom wall of the dielectric filter 7. The specific polishing methods include: a sequential polishing method, first using a polishing pen to polish the side wall of the dielectric filter 7, and then using a laser to polish the bottom wall of the dielectric filter 7; or first using a laser to polish the bottom wall of the dielectric filter 7, and then using a polishing pen to polish the side wall of the dielectric filter 7.

[0050] Detailed process of laser polishing:

[0051] (1) The laser polishing assembly 12 is moved to above the dielectric filter 7 via the X-axis of the XZ two-axis platform 11 , so that the dielectric filter 7 falls within the coverage of the laser polishing assembly 12 .

[0052] (2) The laser polishing component 12 can use a fiber laser with a galvanometer at the front end, and then adjust it through the XY galvanometer so that the laser is aimed at the bottom wall to be polished, and then start laser polishing.

[0053] (3) The Z axis is used to focus the laser in the height direction.

[0054] Detailed process of grinding pen:

[0055] (1) The XYZ three-axis platform 2 drives the filter suction cup 9 to transfer the dielectric filter 7 to be debugged to the fixing fixture 4, and the fixing fixture 4 fixes it.

[0056] (2) Determine the grinding pen 62 of corresponding specifications according to the hole diameter to be ground, and lower the suspension rod 67 corresponding to the grinding pen 62 through the grinding pen switching cylinder 65, so that the grinding pen 62 is lowered to the specified height.

[0057] (3) After the grinding pen 62 touches the dielectric filter 7 driven by the Z axis, the Z axis continues to descend. At this time, the grinding pen 62 maintains an absolute height unchanged through the floating structure, and the mounting bracket 61 continues to descend. The grinding pen 62 is rising relative to the mounting bracket 61 and the height detection sensor 68. The height detection sensor 68 is triggered, and the height locking cylinder 64 locks the fixing seat and the grinding pen 62 together to keep them stationary; then the grinding position is adjusted by moving the Z axis up and down, and the X and Y axes move to feed the grinding amount to achieve side wall grinding and debugging (the grinding pen 62 can also grind the bottom wall).

[0058] Regardless of the sequential polishing method, after the polishing and debugging of the dielectric filter 7 is completed, the XYZ three-axis platform 2 drives the filter suction cup 9 to transfer the debugged dielectric filter 7 to the product delivery mechanism 3.

[0059] The principle and effect of this solution: This solution uses two composite methods, automatic laser polishing and polishing pen polishing, to complete product debugging and achieve the target. Use laser polishing and polishing pen to polish the silver-plated layer or ceramic body area on the surface of the product to achieve qualified filter debugging indicators. Because of the polishing pen polishing and debugging, there are shortcomings such as inaccurate control of filter debugging indicators, low polishing efficiency, easy wear and easy breakage of the polishing head. This equipment combines laser polishing and debugging, with the advantages of high laser efficiency and no consumables replacement; combined with the polishing pen to avoid the disadvantage of laser polishing and debugging that the side wall is difficult to polish (because the laser is usually used when the engraved surface is perpendicular to the laser emission direction, the side wall polishing cannot be irradiated by the laser without deflection of the product), and take their respective advantages to complete the product material removal debugging, that is, let the laser polish the area that is easy to irradiate, and the polishing pen polish the area that the laser cannot irradiate, so as to efficiently complete the product debugging.

[0060] The product delivery mechanism 3 and the fixing tool 4 in this embodiment can be replaced as follows.

[0061] like Fig.10 As shown, in this embodiment, the product delivery mechanism 3 is an in-line automatic transmission line, including two conveyor belts, one of which is used to input the dielectric filter 7 to be debugged, and the other is used to output the dielectric filter 7 after debugging.

[0062] like Fig.11 As shown, in this embodiment, the fixing tool 4 includes a tool support 44, the middle of the tool support 44 is a fixed station of the dielectric filter 7, and a rotating pressing plate 46 is provided on both sides of the fixed station, which is used to press and fix the dielectric filter 7 from both sides. Two rotating drive cylinders 45 are also provided on the tool support 44, and the middle part of the rotating pressing plate 46 is installed on the tool support 44 through an articulated frame 47. The end of the rotating pressing plate 46 away from the fixed station is hinged to the corresponding rotating drive cylinder 45, and the rotating drive cylinder 45 is used to drive the rotating pressing plate 46 to rotate.

[0063] The above description is only an application embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the protection scope of the present invention.

Claims

1. A dielectric filter composite polishing and debugging device, characterized in that: The invention comprises a frame (1), on which is mounted: A product distribution mechanism (3) is used to supply dielectric filters (7) to be debugged and to store dielectric filters (7) that have been debugged; A fixing tool (4) for positioning and fixing a dielectric filter (7) to be debugged; An XYZ three-axis platform (2), on which a filter suction cup (9) is installed for moving the dielectric filter (7) between the product delivery mechanism (3) and the fixed tooling (4); the XYZ three-axis platform (2) is also installed with a debugging and polishing mechanism (6) for polishing the side wall of the dielectric filter (7) on the fixed tooling (4); An XZ two-axis platform (11), a laser polishing assembly (12) being installed on the XZ two-axis platform (11), wherein the laser polishing assembly (12) is used to polish the bottom wall of the dielectric filter (7) on the fixed tooling (4); The fixing tool (4) comprises a tool support (44), the middle of the tool support (44) is a fixing station of the dielectric filter (7), and a rotating pressing plate (46) is respectively provided on both sides of the fixing station, for pressing and fixing the dielectric filter (7) from both sides; the tool support (44) is also provided with two rotating drive cylinders (45), the middle part of the rotating pressing plate (46) is mounted on the tool support (44) through an articulated frame (47), and one end of the rotating pressing plate (46) away from the fixing station is hinged to the corresponding rotating drive cylinder (45), and the rotating drive cylinder (45) is used to drive the rotating pressing plate (46) to rotate; The debugging and polishing mechanism (6) comprises a polishing pen (62), and the polishing pen (62) is fixedly mounted on the Z axis via a mounting bracket (61); the polishing pen (62) and the mounting bracket (61) are connected via a floating connection member, and the polishing pen (62) floats in the vertical direction; the floating connection member comprises a fixed seat (66) and a suspension rod (67), and the fixed seat (66) and the suspension rod (67) are linearly slidably connected, and the polishing pen (62) is fixedly connected to the fixed seat (66); The mounting bracket (61) is also provided with a height locking cylinder (64) and a height detection sensor (68), wherein the height locking cylinder (64) is used to lock the fixing seat (66), and the height detection sensor (68) is used to detect whether the fixing seat (66) rises relative to the height detection sensor (68), and when it is detected that the fixing seat (66) rises, the height locking cylinder (64) locks the fixing seat (66); A plurality of grinding pens (62) of different specifications are mounted on the mounting bracket (61), each grinding pen (62) is equipped with a grinding pen switching cylinder (65), and the grinding pen switching cylinder (65) is fixedly mounted on the mounting bracket (61); the output end of the grinding pen switching cylinder (65) is connected to a suspension rod (67) for driving the suspension rod (67) to move up and down.

2. The dielectric filter composite polishing and debugging equipment according to claim 1 is characterized in that: The mounting bracket (61) is also provided with a dust suction pipe (63) for dust suction, and the dust suction pipe (63) is aligned with the grinding head of the grinding pen (62).

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