Work fixture and method for high-temperature fine tuning of miniaturized surface-mounted high-precision quartz resonator
By designing tooling fixtures suitable for miniaturized surface quartz resonators, using pin lead bottom plate components and product mounts, combined with the fixing and electrical connection structure of magnets and fine-tuning mask covers, the problem of lack of high-temperature evaporation fine-tuning tooling fixtures suitable for miniaturized surface quartz resonators in the prior art is solved, and high-precision fine-tuning processing on existing equipment is achieved, improving product performance and reliability.
Patent Information
- Application Number
- CN202411965408.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-05-13
AI Technical Summary
The existing technology lacks high-temperature evaporation fine-tuning tooling fixtures specially suitable for miniaturized surface-mounted quartz resonators, resulting in the inability to perform high-precision fine-tuning on existing high-temperature constant temperature evaporation fine-tuning equipment.
A tooling fixture for miniaturized surface patch high-precision quartz resonators is designed, including pin lead base plate assembly and product mount. The product is fixed and electrically connected through magnets and fine-tuning mask covers, and is adapted to the existing universal high-temperature constant temperature evaporation fine-tuning equipment for processing.
It realizes high-temperature evaporation and fine-tuning processing of the miniaturized surface-mounted structure quartz resonator on the existing high-temperature constant temperature evaporation fine-tuning equipment, which improves the performance, quality and reliability of the product.
Smart Images
Figure CN119980171A_ABST
Abstract
Description
Technical Field
[0001] This document relates to the field of crystal component processing, and in particular to a fixture and method for high-temperature fine-tuning of miniaturized surface-mounted high-precision quartz resonators. Background Art
[0002] A quartz crystal resonator is a resonant element made using a quartz crystal wafer with a piezoelectric effect. It is also a key component of a crystal oscillator. Due to its small size, light weight, high reliability, excellent frequency stability and other excellent characteristics, it is widely used in communications, medical care, aerospace and other industries and fields.
[0003] The frequency accuracy of quartz crystal components such as crystal resonators and crystal oscillators is a key core performance indicator of quartz crystal components. The fine-tuning process is one of the key links in the production process of quartz resonators. It is the process of accurately realizing the frequency of crystal component products to achieve the accuracy requirements of the final product. At the same time, its processing quality also has a key impact on the product's equivalent resistance, frequency stability, aging and other electrical properties.
[0004] High-temperature constant-temperature evaporation fine-tuning is a conventional traditional processing method used for high-precision quartz resonator products with constant-temperature high-temperature crystal oscillators. The processing principle and method are as follows: based on the mass load effect that the frequency of the quartz oscillator decreases as the surface mass of the chip increases, the working chamber is heated and kept at a constant temperature to a specified reference temperature (usually the center value of the product inflection point temperature indicator, approximately between 70°C and 90°C) in a vacuum environment, and then the metal plating material is heated at high temperature and evaporated. A thin metal film layer is gradually plated on the metal electrode film layer that has been pre-plated on the chip but the thickness does not meet the requirements (characterized by the measured quartz oscillator frequency being higher than the target frequency). By increasing the mass load, the oscillator frequency is gradually reduced to reach the target frequency. This process can achieve precise fine-tuning of each product, which can well meet the high-precision frequency index requirements of precision resonator products under high temperature and constant temperature conditions. The process is simple to implement, the equipment structure is simple and the cost is low, so it is widely used in the industry; but because the current conventional high-precision crystals are all products with lead bracket structures, this type of special high-temperature constant temperature evaporation fine-tuning equipment is currently only suitable for high-temperature constant temperature fine-tuning processing of lead bracket structure products. There is no high-temperature constant temperature evaporation fine-tuning process equipment specifically suitable for miniaturized surface-mount high-precision crystal components on the market.
[0005] Therefore, in response to the high-reliability and high-stability performance requirements in the field of miniaturized crystal components, it is urgent to design and develop a high-temperature evaporation fine-tuning fixture that is suitable for miniaturized surface-mount quartz resonators. This fixture can be installed on the currently common high-temperature constant-temperature evaporation fine-tuning equipment for conventional lead-pin quartz resonators, to achieve high-temperature evaporation fine-tuning processing of miniaturized surface-mount quartz resonators and improve product performance, quality and reliability. Summary of the invention
[0006] The present specification provides a fixture and method for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator, which is used to solve the problem in the prior art of lacking a high-temperature evaporation fine-tuning fixture specifically suitable for miniaturized surface-mounted quartz resonators.
[0007] In one aspect, the present application provides a tooling fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator, including a pin-lead base plate assembly and a product mounting seat;
[0008] The pin lead base plate assembly is fixed to one side of the product mounting seat, and the other side of the product mounting seat is provided with a product mounting slot and a fine-tuning mask cover plate fixing seat, the fine-tuning mask cover plate fixing seat is hinged to the product mounting seat, and a fine-tuning mask cover plate is fixedly provided on the fine-tuning mask cover plate fixing seat, and the fine-tuning mask cover plate can be buckled on the product mounting seat;
[0009] The product can be installed in the product installation slot, and the fine-tuning mask cover is provided with a fine-tuning electrode hole. When the fine-tuning mask cover is buckled onto the product mounting seat, the fine-tuning electrode hole corresponds to the product installation slot.
[0010] According to a tooling fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator provided in some embodiments of the present application, the pin lead base plate assembly includes a base plate and spring pins;
[0011] The two sides of the bottom plate are provided with mounting through holes, and a plurality of the spring pins are plugged into the bottom plate.
[0012] According to some embodiments of the present application, a tooling fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator is provided, wherein an internal mounting screw hole is provided at the bottom of the product mounting seat, and the internal mounting screw hole corresponds to and is connected to the mounting through hole.
[0013] According to some embodiments of the present application, a tooling fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator is provided. A spring pin through-hole is provided at the bottom of the product mounting slot. The spring pin through-hole is arranged corresponding to the spring pin. The spring pin can be embedded in the spring pin through-hole and elastically contact with the solder pad at the bottom of the product.
[0014] According to some embodiments of the present application, a tooling fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator is provided. A magnet embedding groove is provided on the side of the product mounting seat away from the fine-tuning mask cover fixing seat. A magnet is provided in the magnet embedding groove. When the fine-tuning mask cover is buckled onto the product mounting seat, the magnet is magnetically connected to the fine-tuning mask cover.
[0015] According to some embodiments of the present application, a tooling fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator is provided. The fine-tuning mask cover fixing seat is provided with a cover fixing inner screw hole, and the fine-tuning mask cover is provided with a cover mounting through hole. The cover mounting through hole is arranged corresponding to the cover fixing inner screw hole, and fixing screws are installed in the cover fixing inner screw hole and the cover mounting through hole.
[0016] On the other hand, some embodiments of the present application further provide a method of use, which is applied to a fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator, comprising the following steps:
[0017] S1. In the initial state, first select the appropriate modular product high temperature fine-tuning fixture according to the product specifications;
[0018] S2. Lift up the fine-tuning mask cover plate, put the product to be processed into the product mounting slot, align the product wafer electrode on the top of the product with the fine-tuning electrode hole on the fine-tuning mask cover plate, and align the lead pad on the bottom of the product with the spring pin;
[0019] S3. Close the fine-tuning mask cover downward and contact the magnet, so that the magnet attracts the fine-tuning mask cover to ensure that the fine-tuning mask cover is always in a closed state during the processing process. Under the magnetic attraction and downward fixing action of the fine-tuning mask cover, the lead pad of the product and the spring pin are in elastic contact to form a reliable electrical connection;
[0020] S4. Install the fixture containing the product in the equipment and start the equipment to perform normal heating and constant temperature fine-tuning processing.
[0021] According to a method of use provided in some embodiments of the present application, a test plate spring in the device contacts the spring pin, thereby forming a test path between the device and the product.
[0022] According to a method of use provided in some embodiments of the present application, the product is converted through a fixture, and the adapter heats the metal plating material and evaporates it vertically to the electrode area of the product to adjust the frequency.
[0023] At least one of the above technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects:
[0024] The product can be installed in the product mounting slot of the product mounting seat, snapped together by a fine-tuning mask cover and a magnet, connected to the heating and constant temperature fine-tuning equipment through a pin lead base plate assembly, and designed with standard module accessories, wherein the pin lead base plate assembly and the product mounting seat can be serially designed according to the external dimensions and the position spacing of the lead pads of resonator products with different sizes of surface mount structures, to form a serialized mounting conversion seat assembly. In the absence of specialized equipment suitable for high-temperature constant temperature evaporation fine-tuning of surface mount quartz resonators in the current market, the tooling fixture and method provided by the present invention can be used to easily realize high-temperature constant temperature fine-tuning processing of miniaturized surface mount precision resonator products on the only high-temperature constant temperature evaporation frequency fine-tuning equipment suitable for pin lead type crystal component products on the current market, thereby improving product performance, quality and reliability.
[0025] The fine-tuning electrode holes of the fine-tuning mask cover can be designed in series according to parameters such as the electrode diameter and the chip installation position, forming a series of fine-tuning mask cover plates, which can be flexibly combined according to the requirements of the processed products, and the product coverage is wider.
[0026] The product installation design adopts a cover-lifting magnetic suction structure, which makes product installation and removal very convenient. In addition, when the product type changes, the conversion seat can be installed to easily and conveniently replace the product and quickly switch products. Multiple products can be installed at the same time, and multiple products can be heated and kept at a constant temperature at the same time, and precise fine-tuning can be performed on each product. While the operation is flexible and convenient, it also significantly improves the operation and production efficiency.
[0027] The surface mount horizontal structure resonator product is converted into a vertical product through fixture installation, so as to adapt to the conventional general high-temperature constant temperature evaporation fine-tuning equipment used for leaded devices, which electrically heats the metal material and evaporates it horizontally onto the metal electrode of the product to adjust the frequency. The frequency signal lead-out terminal of the surface mount product is converted from a surface mount pad lead to a pin lead by using a spring pin, so as to adapt to the measurement method used for this type of conventional general high-temperature constant temperature evaporation fine-tuning equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0029] Figure 1 A schematic diagram of a product mounting seat structure and a tooling fixture assembly provided in some embodiments of this specification;
[0030] Figure 2 A schematic diagram of the structure of a pin lead base plate assembly provided in some embodiments of this specification;
[0031] Figure 3 Schematic diagram of the installation structure and usage method provided in some embodiments of this specification.
[0032] In the figure: 1. Pin lead base plate assembly; 101. Base plate; 102. Mounting through hole; 103. Spring pin; 2. Product mounting seat; 201. Mounting inner screw hole; 202. Product mounting slot; 203. Spring pin through hole; 204. Magnet buried slot; 205. Magnet; 206. Fine-tuning mask cover plate fixing seat; 207. Cover plate fixing inner screw hole; 208. Fine-tuning mask cover plate; 209. Cover plate mounting through hole; 210. Fine-tuning electrode hole; 3. Product. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.
[0034] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.
[0035] like Figure 1 and Figure 2 As shown, the application provided in this embodiment provides a fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator, including a pin lead base plate assembly 1 and a product mounting seat 2;
[0036] During specific implementation, the pin lead base plate assembly 1 and the product mounting seat 2 are combined to form a product mounting conversion seat assembly, and the product 3 is a surface mounted high-precision quartz resonator product.
[0037] The pin lead base plate assembly 1 and the product mounting seat 2 are fixed to one side of the product mounting seat 2. The other side of the product mounting seat 2 is provided with a product mounting slot 202 and a fine-tuning mask cover plate fixing seat 206. The fine-tuning mask cover plate fixing seat 206 is hinged to the product mounting seat 2. A fine-tuning mask cover plate 208 is fixedly provided on the fine-tuning mask cover plate fixing seat 206. The fine-tuning mask cover plate 208 can be buckled on the product mounting seat 2.
[0038] The product 3 can be installed in the product mounting slot 202 , and the fine-tuning mask cover 208 is provided with a fine-tuning electrode hole 210 . When the fine-tuning mask cover 208 is buckled onto the product mounting seat 2 , the fine-tuning electrode hole 210 corresponds to the product mounting slot 202 .
[0039] When implementing it, Figure 1 and Figure 2 As shown, the pin lead base plate assembly 1 is fixedly installed at the bottom of the product mounting seat 2 for connecting the processing equipment. The top of the product mounting seat 2 is provided with a product mounting slot 202 and a fine-tuning mask cover plate fixing seat 206. The product mounting seat 2 is provided with a fine-tuning mask cover plate fixing seat 206 on one side which is recessed downward to form a groove structure. The fine-tuning mask cover plate fixing seat 206 is hinged in the groove. The rotation of the fine-tuning mask cover plate fixing seat 206 can control the opening and closing of the fine-tuning mask cover plate 208. When the product 3 is installed in the product mounting slot 202, the product wafer electrode on the top of the product 3 is aligned with the fine-tuning electrode hole 210, so that the surface mounted horizontal structure resonator product 3 is converted into a vertical product processing through a fixture installation, so as to adapt to the conventional general high-temperature constant temperature evaporation fine-tuning equipment for leaded devices, which electrically heats the metal material and evaporates it horizontally onto the product metal electrode to adjust the frequency.
[0040] In some embodiments, Figure 1 and 2 As shown, the pin lead base plate assembly 1 includes a base plate 101 and spring pins 103 . Mounting through holes 102 are provided on both sides of the base plate 101 , and a plurality of spring pins 103 are plugged into the base plate 101 .
[0041] In specific implementation, by setting the base plate 101 and the spring pin 103, the product 3 is converted from a surface mount structure to a pin lead type; at the same time, the electrical connection conversion can be performed through the structure above, and the lead product can be tested in conjunction with the frequency test plate spring in the equipment.
[0042] In some embodiments, a mounting inner screw hole 201 is provided at the bottom of the product mounting seat 2 , and the mounting inner screw hole 201 corresponds to and is connected to the mounting through hole 102 .
[0043] During specific implementation, the product mounting base 2 and the pin lead base plate assembly 1 are fixedly connected together by inserting screws into the mounting inner screw hole 201 and the mounting through hole 102 .
[0044] In some embodiments, a spring pin through-hole 203 is provided at the bottom of the product mounting slot 202 , and the spring pin through-hole 203 is arranged corresponding to the spring pin 103 . The spring pin 103 can be embedded in the spring pin through-hole 203 and elastically contact with the solder pad at the bottom of the product 3 .
[0045] In specific implementation, the bottom lead pad of the product 3 is aligned with the spring pin 103, and under the magnetic suction and downward fixing action of the fine-tuning mask cover 208, the product pad and the spring pin 103 are in elastic contact to form a reliable electrical connection.
[0046] In some embodiments, a cover fixing inner screw hole 207 is provided on the fine-tuning mask cover fixing seat 206, and a cover mounting through hole 209 is provided on the fine-tuning mask cover 208. The cover mounting through hole 209 is arranged corresponding to the cover fixing inner screw hole 207, and fixing screws are installed in the cover fixing inner screw hole 207 and the cover mounting through hole 209.
[0047] A magnet buried groove 204 is provided on the product mounting seat 2 at a side away from the fine-tuning mask cover plate fixing seat 206 , and a magnet 205 is arranged in the magnet buried groove 204 . When the fine-tuning mask cover plate 208 is buckled onto the product mounting seat 2 , the magnet 205 is magnetically connected to the fine-tuning mask cover plate 208 .
[0048] When implementing it, Figure 1 and 2 As shown, the spring end of the spring pin 103 is facing upward and welded to the base plate 101 to form a pin lead base plate. Furthermore, a small columnar magnet 205 is embedded in the magnet embedding groove 204 on the product mounting seat 2, and then the cover mounting through hole 209 on the fine-tuning mask cover 208 is aligned with the cover fixing inner screw hole 207 on the fine-tuning mask cover fixing seat 206 and fixed with screws, finally forming a complete assembly structure of the product mounting conversion seat assembly in this embodiment.
[0049] like Figure 1-Figure 3 As shown, on the other hand, some embodiments of the present application also provide a method of use, which is applied to a fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator, comprising the following steps:
[0050] S1. In the initial state, first select the appropriate modular product high temperature fine-tuning fixture according to the specifications of product 3;
[0051] S2, lift up the fine-tuning mask cover plate 208, put the product 3 to be processed into the product mounting slot 202, align the product wafer electrode on the top of the product 3 with the fine-tuning electrode hole 210 on the fine-tuning mask cover plate 208, and align the lead pad on the bottom of the product 3 with the spring pin 103;
[0052] S3, close the fine-tuning mask cover plate 208 downward and contact the magnet 205, so that the magnet 205 attracts the fine-tuning mask cover plate 208, ensuring that the fine-tuning mask cover plate 208 is always in a closed state during the processing process. Under the magnetic attraction and downward fixing action of the fine-tuning mask cover plate 208, the lead pad of the product 3 and the spring pin 103 are elastically contacted to form a reliable electrical connection;
[0053] S4. Install the fixture containing product 3 in the equipment and start the equipment to perform normal heating and constant temperature fine-tuning processing.
[0054] In specific implementation, during this process, the test plate spring in the device contacts the spring pin 103 on the fixture, thereby forming a test path between the device and the product, realizing the adapter device connecting the product through the test reed and continuously monitoring its frequency during the fine-tuning process; at the same time, the product is converted through the tooling, and the adapter device heats the metal plating material and evaporates it vertically to the product electrode area to adjust the frequency.
[0055] Finally, the goal is to utilize the existing high-temperature heating and constant temperature fine-tuning equipment for leaded products to achieve high-temperature heating and constant temperature precision fine-tuning of miniaturized precision quartz resonator products with surface-mount horizontal structures.
[0056] It can realize the installation of the surface-mounted horizontal structure miniaturized precision quartz resonator on the current universal standard heating constant temperature evaporation fine-tuning equipment, and easily realize the heating constant temperature evaporation fine-tuning processing of the surface-mounted horizontal structure quartz resonator, thereby improving product performance, quality and reliability.
[0057] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.
Claims
1. A fixture for high-temperature fine-tuning of miniaturized surface-mounted high-precision quartz resonators, characterized in that: It comprises a pin lead base plate assembly (1) and a product mounting seat (2); The pin lead base plate assembly (1) is fixed to one side of the product mounting seat (2) and the product mounting seat (2); the other side of the product mounting seat (2) is provided with a product mounting slot (202) and a fine-tuning mask cover plate fixing seat (206); the fine-tuning mask cover plate fixing seat (206) is hinged to the product mounting seat (2); a fine-tuning mask cover plate (208) is fixedly provided on the fine-tuning mask cover plate fixing seat (206); and the fine-tuning mask cover plate (208) can be buckled onto the product mounting seat (2); The product (3) can be installed in the product installation slot (202), and a fine-tuning electrode hole (210) is provided on the fine-tuning mask cover (208). When the fine-tuning mask cover (208) is buckled onto the product mounting seat (2), the fine-tuning electrode hole (210) corresponds to the product installation slot (202).
2. A fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator according to claim 1, characterized in that: The pin lead base plate assembly (1) comprises a base plate (101) and spring pins (103); Mounting through holes (102) are provided on both sides of the bottom plate (101), and a plurality of spring pins (103) are plugged into the bottom plate (101).
3. A fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator according to claim 2, characterized in that: An internal mounting screw hole (201) is provided at the bottom of the product mounting seat (2), and the internal mounting screw hole (201) corresponds to and is in communication with the mounting through hole (102).
4. A fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator according to claim 3, characterized in that: A spring pin through hole (203) is provided at the bottom of the product mounting slot (202), and the spring pin through hole (203) is arranged corresponding to the spring pin (103). The spring pin (103) can be embedded in the spring pin through hole (203) and elastically contact with the solder pad at the bottom of the product (3).
5. A fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator according to claim 4, characterized in that: A magnet embedded groove (204) is provided on a side of the product mounting seat (2) away from the fine-tuning mask cover plate fixing seat (206), a magnet (205) is arranged in the magnet embedded groove (204), and when the fine-tuning mask cover plate (208) is buckled onto the product mounting seat (2), the magnet (205) is magnetically connected to the fine-tuning mask cover plate (208).
6. The fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator according to claim 1, characterized in that: The fine-tuning mask cover plate fixing seat (206) is provided with a cover plate fixing inner screw hole (207), the fine-tuning mask cover plate (208) is provided with a cover plate mounting through hole (209), the cover plate mounting through hole (209) is arranged corresponding to the cover plate fixing inner screw hole (207), and fixing screws are installed in the cover plate fixing inner screw hole (207) and the cover plate mounting through hole (209).
7. A method of use, characterized in that: A fixture for high-temperature fine-tuning of a miniaturized surface-mounted high-precision quartz resonator as described in any one of claims 1 to 6 comprises the following steps: S1. In the initial state, first select a suitable modular product high temperature fine-tuning fixture according to the specifications of product (3); S2, lift up the fine-tuning mask cover plate (208), place the product (3) to be processed into the product mounting slot (202), align the product wafer electrode on the top of the product (3) with the fine-tuning electrode hole (210) on the fine-tuning mask cover plate (208), and align the lead pad on the bottom of the product (3) with the spring pin (103); S3, closing the fine-tuning mask cover plate (208) downward and contacting the magnet (205), so that the magnet (205) attracts the fine-tuning mask cover plate (208), ensuring that the fine-tuning mask cover plate (208) is always in a closed state during the processing process, and under the magnetic attraction and downward fixing action of the fine-tuning mask cover plate (208), the lead pad of the product (3) and the spring pin (103) are in elastic contact, forming a reliable electrical connection; S4. Install the fixture containing the product (3) in the equipment and start the equipment to perform normal heating and constant temperature fine-tuning processing.
8. A method of use according to claim 7, characterized in that: The test plate spring in the device contacts the spring pin (103), thereby forming a test path between the device and the product (3).
9. A method of use according to claim 8, characterized in that: The product (3) is converted through a fixture, and the adapter heats the metal plating material and evaporates it vertically to the electrode area of the product (3) to adjust the frequency.