A rod positioning and bonding fixture for processing hemispherical resonator

Abstract

This utility model relates to a rod positioning and bonding fixture for processing hemispherical resonators, including a fixture base. The fixture base is equipped with a side frame, a rod support assembly, and an automatic glue applicator. The side frame has a clamping member for holding a reference rod. The rod support assembly supports the molten quartz rod and has a drive mechanism for aligning the end of the molten quartz rod with the end of the reference rod. The automatic glue applicator is located between the clamping member and the rod support assembly and is used to apply glue to the end of the reference rod. In this utility model, the clamping member on the side frame fixes the reference rod to provide a stable processing reference; the rod support assembly supports the molten quartz rod and achieves precise alignment with the reference rod through the drive mechanism, ensuring coaxiality and contact accuracy between the two; the automatic glue applicator, located between the two, can accurately apply glue to the end of the reference rod, ensuring reliable and consistent bonding.

Description

Technical Field

[0001] This utility model relates to the field of resonator processing technology, and in particular to a rod positioning and bonding fixture for processing hemispherical resonators. Background Technology

[0002] In the current field of resonator manufacturing, raw materials are typically in the form of long bars. Their advantage lies in their direct clamping via collet holders, making operation simple and efficient. After processing, the bar can be quickly pulled out, allowing for rapid loading of the next product, significantly improving production efficiency. However, this processing method has a significant drawback: when the bar is processed to a length of less than 30mm, it cannot be effectively clamped by the collet holder due to its short length, rendering it unusable. This waste is particularly pronounced in mass production. Especially since the special grade of fused silica glass used in resonator manufacturing is extremely expensive, costing tens of thousands of yuan per kilogram, the waste of short bars results in significant economic losses for companies.

[0003] To solve this problem, workers bond short bars to reference bars for further processing, thus making full use of the remaining material. However, the existing bonding method relies on workers' experience to bond manually. Although it can be used, the bonding standards are inconsistent and concentricity is difficult to guarantee. Therefore, it is particularly necessary to design a special bonding fixture. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a rod positioning and bonding fixture for processing hemispherical resonators.

[0005] The technical solution of this utility model is as follows: a rod positioning and bonding fixture for processing hemispherical resonators, including a fixture base, a side frame, a rod support assembly and an automatic glue applicator are provided on the fixture base, a clamping member for clamping a reference rod is provided on the side frame, the rod support assembly is used to support the molten quartz rod, and a driving mechanism for docking the end of the molten quartz rod with the end of the reference rod is provided on the rod support assembly, and the automatic glue applicator is located between the clamping member and the rod support assembly for applying glue to the end of the reference rod.

[0006] Furthermore, it is particularly preferred that the bar stock support assembly includes a base and an upper support portion. The base is slidably disposed on the upper end of the tooling base. The base and the upper support portion are connected by a hydraulic leg, and a cylinder for driving the upper support portion to rise and fall is also provided between them. A V-shaped long groove is formed on the upper end surface of the upper support portion, and a pressure sensor is embedded on the surface of the V-shaped long groove.

[0007] Furthermore, it is particularly preferred that the drive mechanism includes an ear plate, a lead screw, and a nut. The ear plate is disposed at the end of the upper support away from the clamping member, the nut is horizontally disposed on the ear plate, the lead screw is mounted on the nut, one end of the lead screw extends into a V-shaped groove and is provided with an abutment plate, and the other end of the lead screw is provided with a handwheel.

[0008] Furthermore, it is particularly preferred that the calibration molds include multiple calibration molds with model markings engraved on their surfaces. The calibration molds include mold A and mold B, wherein mold A is a single tubular structure with an inner diameter that is the same as the outer diameter of the reference bar and an outer diameter that is the same as the outer diameter of the fused silica bar; mold B is a coaxially connected double-tube structure, with the inner diameter of one tube being the same as the outer diameter of the reference bar and the outer diameter of the other tube being the same as the outer diameter of the fused silica bar.

[0009] Furthermore, it is particularly preferred that the clamping element is a hexagonal chuck or a collet holder.

[0010] Beneficial effects: 1. The clamping parts on the side frame of this utility model are used to fix the reference bar to provide a stable processing reference; the bar support assembly supports the fused quartz bar and achieves precise docking with the reference bar through the drive mechanism to ensure the coaxiality and contact accuracy of the two. The automatic glue applicator is located between the two and can accurately apply glue to the end of the reference bar to ensure the reliability and consistency of the bonding.

[0011] 2. This utility model achieves flexible lifting and position adjustment of fused quartz bars by setting a bar support assembly with a sliding base, hydraulic legs and cylinders. The inverted triangular long groove design further enhances the stability of the bars, ensuring that the bars will not shake during processing, thereby improving bonding accuracy and processing quality.

[0012] Furthermore, the drive mechanism employs a combination of lugs, lead screws, and nuts, enabling precise horizontal movement via a handwheel. The abutment plate stably and tightly connects the molten quartz bar with the end of the reference bar, ensuring coaxiality and flatness of the bonding surface.

[0013] 3. This utility model can quickly calibrate bars of different sizes by setting calibration molds with different structures, ensuring the coaxiality of the fused quartz bar and the reference bar. The model markings on the surface of the mold make it easy for operators to quickly select the appropriate mold. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the bar support assembly and drive mechanism of this utility model.

[0016] Figure 3This is a schematic diagram of the mold box and molds A and B of this utility model.

[0017] The markings in the diagram are as follows: 1-Tooling base, 11-Slide groove, 2-Side frame, 3-Bar stock support assembly, 31-Base, 311-Slider, 32-Upper support, 33-Hydraulic leg, 34-Cylinder, 35-Long groove, 36-Pressure sensor, 4-Automatic glue applicator, 5-Clamping component, 6-Drive mechanism, 61-Ear plate, 62-Lead screw, 63-Nut, 64-Abutment plate, 65-Handwheel, 7-Mold box, 71-Mold A, 72-Mold B, C-Reference bar stock, D-Melted quartz bar stock. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0019] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

[0020] like Figure 1-3 The hemispherical resonator processing rod positioning and bonding fixture shown includes a fixture base 1, on which a side frame 2, a rod support assembly 3, and an automatic glue applicator 4 are mounted. The side frame 2 has a clamping member 5 for holding a reference rod C. The clamping member 5 is a hexagonal chuck, triangular chuck, or collet, providing a stable clamping force to ensure that the reference rod C does not shift during processing. The rod support assembly 3 supports the fused quartz rod D and has a drive mechanism 6 for aligning the end of the fused quartz rod D with the end of the reference rod C, ensuring precise alignment. The automatic glue applicator 4 is located between the clamping member 5 and the rod support assembly 3, applying glue to the end of the reference rod C to ensure uniform glue application and improve bonding quality.

[0021] Automatic glue applicator 4 can be an automatic glue applicator with a photoelectric control motor driving the working mechanism. Its structure includes a motor, connecting rod, eccentric wheel, glue applicator plunger, nozzle, and phototube. The motor drives the eccentric wheel and connecting rod, causing the glue applicator plunger to reciprocate, pushing the glue from the nozzle and evenly applying it to the end of the reference bar C. The phototube is used to detect the workpiece position and control the start and stop of glue application. Automatic glue applicator 4 is existing technology and will not be described in detail here.

[0022] The adhesive used can be AB glue, UV glue, or other strong adhesives.

[0023] refer to Figure 2 The bar stock support assembly 3 includes a base 31 and an upper support portion 32. The base 31 is slidably disposed on the upper end of the tooling base 1. Specifically, in this embodiment, a groove 11 is formed on the upper end of the tooling base 1, and a slider 311 adapted to the groove 11 is provided on the bottom of the base 31, allowing the two to slide. The base 31 and the upper support portion 32 are connected by a hydraulic leg 33, and a cylinder 34 for driving the upper support portion 32 to rise and fall is also provided between them. A V-shaped long groove 35 is formed on the upper end surface of the upper support portion 32, and a pressure sensor 36 is embedded in the surface of the V-shaped long groove 35. The pressure sensor 36 is a piezoresistive pressure sensor.

[0024] When adjusting the height of the bar support assembly 3, first place the calibration mold onto the reference bar C. The dimensions of the calibration mold are the same as those of the molten quartz bar D to be processed. At this time, adjust the height of the bar support assembly 3 so that it abuts against the calibration mold. When the pressure sensor 36 detects the contact force, the PLC control system (not shown in the figure) controls the cylinder 34 to stop operating to avoid damaging the calibration mold or the reference bar C. The height of the bar support assembly 3 at this time is the optimal placement height for processing the molten quartz bar D, at which the coaxiality of the two bars is highest.

[0025] refer to Figure 2 The drive mechanism 6 includes an ear plate 61, a lead screw 62, and a nut 63. The ear plate 61 is located at the end of the upper support 32 away from the clamping member 5. The nut 63 is horizontally located on the ear plate 61. The lead screw 62 is mounted on the nut 63. One end of the lead screw 62 extends into the V-shaped groove 35 and is provided with an abutment plate 64. The other end is provided with a handwheel 65. Through the cooperation of the handwheel 65 and the lead screw 62, the precise docking of the fused quartz rod D and the reference rod C is achieved. The operation is simple and the precision is high.

[0026] refer to Figure 3 In one specific embodiment, the calibration mold includes mold A71 and mold B72, with model markings engraved on the surface of each mold. Molds A71 and B72 are placed in mold box 7. It should be noted that mold A71 is a single tubular structure with an inner diameter identical to the outer diameter of the reference bar C and an outer diameter identical to the outer diameter of the fused silica bar D. Mold B72 is a coaxially connected double-tube structure, with one tube having an inner diameter identical to the outer diameter of the reference bar C and the other having an outer diameter identical to the outer diameter of the fused silica bar D. The calibration molds allow for rapid adjustment of the bar's coaxiality, improving processing efficiency and accuracy.

[0027] The PLC control system equipped in this tooling is used to control the coordinated operation of various components. Among them, the pressure sensor 36 is connected to the input terminal of the PLC to monitor the pressure signal between the bar support assembly 3 and the calibration mold to determine their distance. It is connected to the output terminal of the PLC through the solenoid valve. The PLC controls the lifting action of the cylinder 34 according to the signal of the pressure sensor 36 to achieve precise positioning of the bar support assembly 3. The PLC controls the start and stop of the glue applicator to ensure that the glue is evenly applied to the end of the reference bar C.

[0028] Working principle and implementation steps

[0029] In actual operation, the reference bar C is first installed in the clamping member 5, ensuring it is firmly clamped and accurately positioned. Then, a suitable calibration mold, mold A71 or mold B72, is selected and placed on the reference bar C. The dimensions of the mold are the same as those of the molten quartz bar D to be processed. The height of the bar support assembly 3 is adjusted by the cylinder 34 until it abuts against the mold. When the pressure sensor 36 detects the contact force, the PLC control system controls the cylinder 34 to stop operating. This height is the optimal placement height for processing the molten quartz bar D, at which the coaxiality of the two bars is highest.

[0030] Next, the fused quartz rod D is placed in the V-shaped groove 35 of the rod support assembly 3. The automatic glue applicator 4 is started, and the glue applicator plunger is driven by a motor to evenly apply the glue to the end of the reference rod C. A photoelectric tube is used to detect the workpiece position and control the start and stop of the glue application. After the glue application is completed, the handwheel 65 is turned to move the fused quartz rod D toward the reference rod C. When the two come into contact, they remain in contact for about 5 minutes to complete the bonding. After the glue has cured, the bonded rods are removed from the fixture for subsequent processing.

[0031] The above tooling not only solves the problems of weak bonding and low concentricity in the bonding process of fused quartz rods, but also makes full use of the last bit of residual material in the rods through bonding, which greatly saves costs, reduces material waste, and alleviates the burden on enterprises.

Claims

1. A rod positioning and bonding fixture for processing hemispherical resonators, characterized in that: The fixture includes a tooling base (1), on which a side frame (2), a bar support assembly (3), and an automatic glue applicator (4) are provided. The side frame (2) is provided with a clamping member (5) for clamping a reference bar. The bar support assembly (3) is used to support the molten quartz bar. The bar support assembly (3) is provided with a drive mechanism (6) for connecting the end of the molten quartz bar with the end of the reference bar. The automatic glue applicator (4) is located between the clamping member (5) and the bar support assembly (3) for applying glue to the end of the reference bar.

2. The rod positioning and bonding fixture for processing hemispherical resonators as described in claim 1, characterized in that: The bar stock support assembly (3) includes a base (31) and an upper support (32). The base (31) is slidably disposed on the upper end of the tooling base (1). The base (31) and the upper support (32) are connected by a hydraulic leg (33). A cylinder (34) for driving the upper support (32) to rise and fall is also provided between the two. A V-shaped groove (35) is formed on the upper end surface of the upper support (32). A pressure sensor (36) is embedded on the surface of the V-shaped groove (35).

3. The rod positioning and bonding fixture for processing hemispherical resonators as described in claim 2, characterized in that: The drive mechanism (6) includes an ear plate (61), a lead screw (62) and a nut (63). The ear plate (61) is located at the end of the upper support (32) away from the clamping member (5). The nut (63) is horizontally located on the ear plate (61). The lead screw (62) is mounted on the nut (63). One end of the lead screw (62) extends into the V-shaped groove (35) and is provided with an abutment plate (64). The other end of the lead screw (62) is provided with a handwheel (65).

4. The rod positioning and bonding fixture for processing hemispherical resonators as described in claim 3, characterized in that: It also includes multiple calibration molds with model markings engraved on their surfaces, wherein the calibration molds include mold A (71) and mold B (72), wherein Mold A (71) is a single tubular structure. The inner diameter of the tube is the same as the outer diameter of the reference bar, and the outer diameter of the tube is the same as the outer diameter of the fused quartz bar. Mold B (72) is a coaxially connected double tube structure, in which the inner diameter of one tube is the same as the outer diameter of the reference bar, and the outer diameter of the other tube is the same as the outer diameter of the fused quartz bar.

5. The rod positioning and bonding fixture for processing hemispherical resonators as described in claim 4, characterized in that: The clamping component (5) is a hexagonal chuck or a collet holder.

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