Fixture and method for drilling and clamping flange edges of irregularly shaped fiberglass radome unit components

Abstract

This invention discloses a fixture and method for drilling and clamping the flange edge of a fiberglass radome irregular-shaped unit component. The fixture consists of upper and lower clamping blocks arranged at intervals and hinged together. Symmetrically positioned notches are formed on the sides of the upper and lower clamping blocks. A screw is located within one of these notches, and its top end is fitted into a second pin located within the notch of the upper clamping block via a bushing. A locking nut is tightened onto the tail end of the screw, locking the closing distance between the upper and lower clamping blocks. A limiting pin is located on the front side of the lower clamping block. The upper clamping block has a pin hole and a bushing hole spaced apart on the rear side of the notch. A positioning pin is located in the bushing hole. The lower clamping block has openings at the pin hole and bushing hole positions. This method clamps the flange edge of the unit component between the upper and lower clamping blocks, locates the hole position on the flange edge using the positioning pin, and guides the drill bit through the bushing hole to drill the flange edge. This drilling and clamping fixture and method facilitates the machining and fabrication of flange edge drilling for unit components, optimizes the machining process, saves tooling costs, and improves drilling accuracy and quality.

Description

Technical Field

[0001] This invention relates to the field of fiberglass product processing technology, and in particular to a tooling and method for drilling and clamping flange edges of a fiberglass radome irregular surface unit. Background Technology

[0002] Fiberglass radomes serve to protect radar antennas, requiring excellent electromagnetic wave penetration performance and ensuring normal operation of the radar antenna under various conditions and in all weather environments. Figure 1 As shown, the fiberglass radome 10, due to its large area, presents numerous inconveniences in manufacturing, transportation, and installation when molded as a single piece. Generally, it is disassembled into multiple irregularly shaped unit components 11 using a modular approach. The flange edges of adjacent unit components are drilled and then assembled to form a whole. Traditional methods for drilling the flange edges of irregularly shaped unit components are diverse and lack universality, resulting in low processing accuracy, subsequent assembly difficulties, and increased flange gaps. Furthermore, the variety and complexity of irregularly shaped unit components necessitate the creation of specialized fixtures, directly increasing drilling costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a fixture and method for drilling and clamping flanges of irregularly shaped fiberglass radome units. This fixture and method overcomes the defects of traditional drilling operations, facilitates the processing and fabrication of flanges of units, optimizes the processing technology, saves tooling costs, and improves drilling accuracy and quality.

[0004] To solve the above-mentioned technical problems, the present invention provides a flange edge drilling and clamping fixture for a fiberglass radome irregular surface unit, comprising an upper clamping block, a lower clamping block, a first pin, a second pin, a positioning pin, a limiting pin, a screw, and a locking nut. The upper and lower clamping blocks are arranged vertically at intervals and their front ends are hinged together by the first pin. Symmetrically positioned notches are respectively opened on the side of the upper and lower clamping blocks behind the hinged end of the first pin. The second pin is located within the notch of the upper clamping block. The screw is located within the notches of the upper and lower clamping blocks, and its top end is fitted into the flange edge of the radome through a bushing. The second pin is described above. The locking nut is screwed onto the tail end of the screw and locks the closing distance between the upper clamping block and the lower clamping block. An arc-shaped limiting groove is opened on the inner side of the upper clamping block. The limiting pin is located on the front side of the lower clamping block and is located in the arc-shaped limiting groove of the upper clamping block, so that the closing distance between the upper clamping block and the lower clamping block is less than the thickness of the unit flange edge and the maximum opening angle is 15 degrees. The upper clamping block has a pin hole and a bushing hole spaced apart on the rear side of the notch. The positioning pin is located in the bushing hole. The lower clamping block has an opening at the pin hole and bushing hole of the upper clamping block.

[0005] Furthermore, a limiting stop is provided on one side of the surface of the lower clamping block at the bottom edge of the opening.

[0006] Furthermore, the locking nut is a treasury nut.

[0007] A method for drilling holes in the flange edge of a fiberglass radome irregular-shaped unit based on the above-mentioned clamping fixture includes the following steps: Step 1: Loosen the locking nut, flip the screw to move it out of the notch between the upper and lower clamping blocks, and flip the upper clamping block. Step 2: Place the flange edge of the unit component on the surface of the lower clamping block, and position the limiting block against the flange edge of the unit component. Step 3: Flip the upper clamping block so that the upper clamping block and the lower clamping block cooperate to clamp the flange edge of the unit component. Insert the positioning pin into the bushing hole and abut against the flange edge of the unit component. The surface of the unit component has a concave hole that matches the positioning pin, so that the positioning pin and the hole on the flange edge of the unit component are aligned. Step 4: Turn the screw over so that it is located in the notch of the upper clamping block and the lower clamping block, tighten the locking nut, and cooperate with the limit pin to make the upper clamping block and the lower clamping block clamp the flange edge of the unit component, and fix the entire clamping fixture to the flange edge of the unit component. Step 5: Move the locating pin to the pin hole, guide the drill bit through the bushing hole to drill the flange edge of the unit component, and complete the single-hole drilling operation of the flange edge of the unit component. Because the present invention adopts the above-mentioned technical solution, the upper clamping block and the lower clamping block of this fixture are arranged at intervals and their front ends are hinged by the first pin. The sides of the upper and lower clamping blocks are respectively opened with symmetrical notches on the rear side of the hinge end of the first pin. The second pin is located in the notch of the upper clamping block. The screw is located in the notch of the upper and lower clamping blocks and its top end is sleeved into the second pin. The locking nut is screwed on the tail end of the screw and locks the closing distance of the upper and lower clamping blocks. The limiting pin is located on the front side of the lower clamping block and in the arc-shaped limiting groove of the upper clamping block, so that the closing distance of the upper and lower clamping blocks is less than the thickness of the flange edge of the unit and the maximum opening angle is 15 degrees. The upper clamping block has a pin hole and a bushing hole at intervals on the rear side of the notch. The positioning pin is located in the bushing hole. The lower clamping block has an opening at the pin hole and bushing hole of the upper clamping block. This method clamps the flange edge of the unit component between upper and lower clamping blocks, positions the holes on the flange edge using locating pins, and guides the drill bit through the bushing hole to drill the flange edge, completing the single-hole drilling operation on the flange edge. This drilling clamping fixture and method overcomes the shortcomings of traditional drilling operations, facilitates the processing and fabrication of flange edge drilling for unit components, optimizes the processing technology, saves tooling costs, and improves drilling accuracy and quality. Attached Figure Description

[0008] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of a fiberglass radome structure. Figure 2 This is a schematic diagram of the flange edge drilling and clamping fixture for the irregular-shaped fiberglass radome unit of the present invention; Figure 3 This is a schematic diagram of the drilling method for the flange edge of the irregular-shaped unit component of the fiberglass radome in this method. Detailed Implementation

[0009] Implementation, for example Figure 2 As shown, the flange edge drilling and clamping fixture for the irregular surface unit of the fiberglass radome of the present invention includes an upper clamping block 1, a lower clamping block 2, a first pin 3, a second pin 4, a positioning pin 5, a limiting pin 6, a screw 7, and a locking nut 8. The upper clamping block 1 and the lower clamping block 2 are arranged vertically at intervals and their front ends are hinged together by the first pin 3. The sides of the upper clamping block 1 and the lower clamping block 2 have symmetrically positioned notches 12 and 21 respectively on the rear side of the hinge end of the first pin 3. The second pin 4 is located in the notch 12 of the upper clamping block 1. The screw 7 is located in the notches 12 and 21 of the upper clamping block 1 and the lower clamping block 2, and its top end is fitted into the second pin 4 through a bushing 71. The locking nut 8 is screwed onto the tail end of the screw 7 and locks the closing distance between the upper clamping block 1 and the lower clamping block 2. An arc is formed on the inner side of the upper clamping block 1. The upper clamping block 1 has an arc-shaped limiting groove, and the limiting pin 6 is located on the front side of the lower clamping block 2 and within the arc-shaped limiting groove of the upper clamping block 1. This ensures that the closing distance between the upper clamping block 1 and the lower clamping block 2 is less than the thickness of the unit flange edge, and the maximum opening angle is 15 degrees. The arc-shaped limiting groove and the limiting pin 6 work together to achieve the limiting function, preventing the opening and closing angle of the upper clamping block 1 and the lower clamping block 2 from being too large, facilitating operation, and ensuring that the closing distance is less than the thickness of the unit flange edge to achieve the clamping function. The upper clamping block 1 has a pin hole 13 and a bushing hole 14 spaced apart on the rear side of the notch 12. The pin hole can reduce the overall weight and also facilitate the temporary placement of the positioning pin. The positioning pin 5 is located in the bushing hole 14. The lower clamping block 2 has an opening 22 at the pin hole 13 and bushing hole 14 of the upper clamping block 1.

[0010] Among them, bushing hole 14 is for setting a bushing in the opened through hole to facilitate the drilling operation of the drill bit and avoid damage to the inner wall of the through hole by the drill bit; at the same time, by changing bushings with different inner diameters and matching drill bits of different specifications, drilling operations can be carried out on through holes of different diameters on the flange edge of the irregular surface unit.

[0011] Preferably, a limiting block 23 is provided on one side of the surface of the lower clamping block 2 at the bottom edge of the opening 22. The limiting block is used to position the flange edge of the irregular surface unit to ensure drilling accuracy.

[0012] Preferably, the locking nut 8 is a swivel nut. The swivel nut facilitates the tightening of the locking nut and improves the efficiency of drilling operations.

[0013] like Figure 3 As shown, a method for drilling holes in the flange edge of a fiberglass radome irregular surface unit based on the above-mentioned clamping fixture includes the following steps: Step 1: Loosen the locking nut 8, flip the screw 7 out of the notches 12 and 21 of the upper clamping block 1 and the lower clamping block 2, and flip the upper clamping block 1. Step 2: Place the flange edge of unit component 11 on the surface of the lower clamping block 2, and position the limiting block 23 against the flange edge of unit component 11. Step 3: Flip the upper clamping block 1 so that the upper clamping block 1 and the lower clamping block 2 cooperate to clamp the flange edge of the unit 11. The positioning pin 5 is inserted into the bushing hole 14 and abuts against the flange edge of the unit 11. The surface of the unit 11 is provided with a concave hole that matches the positioning pin 5, so that the positioning pin 5 and the hole on the flange edge of the unit 11 are consistent. Step 4: Turn the screw 7 into the notches 12 and 21 of the upper clamping block 1 and the lower clamping block 2, tighten the locking nut 8, and cooperate with the limit pin 6 to make the upper clamping block 1 and the lower clamping block 2 clamp the flange edge of the unit 11, and fix the entire clamping fixture to the flange edge of the unit 11. Step 5: Move the locating pin 5 to the pin hole 13, and guide the drill bit through the bushing hole 14 to drill the flange edge of unit 11, completing the single-hole drilling operation of the flange edge of unit 11.

[0014] Fiberglass radomes are typically used in specialized applications. Due to the insulation, corrosion resistance, and high strength of fiberglass products, radomes made of fiberglass are often large in structure and size, and irregular in shape, making them more difficult to manufacture.

[0015] This drilling clamping fixture and method are applicable to drilling operations on elliptical / truncated spherical radome units of different specifications, hole diameters, and varying heights. The entire fixture is fixed to the overlapping edge of the unit, with screws and locking nuts forming a locking mechanism, enabling quick clamping and release of the upper and lower clamping blocks, thus improving drilling efficiency. This drilling clamping fixture and method allows for a more rational drilling process to ensure the drilling accuracy of each irregularly shaped unit unit, and is applicable to drilling various types of unit units, resulting in qualified unit products. This ensures that the gaps between adjacent unit units meet design requirements after assembly, improving connection strength and making the antenna inside the radome safer to use.

Claims

1. A fixture for drilling and clamping flange edges of a fiberglass radome irregular-shaped unit component, characterized in that: The device includes an upper clamping block, a lower clamping block, a first pin, a second pin, a positioning pin, a limiting pin, a screw, and a locking nut. The upper and lower clamping blocks are arranged vertically at intervals and their front ends are hinged together by the first pin. The sides of the upper and lower clamping blocks have symmetrically positioned notches on the rear side of the hinged end of the first pin. The second pin is located within the notch of the upper clamping block. The screw is located within the notches of the upper and lower clamping blocks, and its top end is fitted onto the second pin through a bushing. The locking nut is screwed onto the screw. The rod end is locked to the closing distance between the upper clamping block and the lower clamping block. An arc-shaped limiting groove is opened on the inner side of the upper clamping block. The limiting pin is located on the front side of the lower clamping block and is located in the arc-shaped limiting groove of the upper clamping block, so that the closing distance between the upper clamping block and the lower clamping block is less than the thickness of the unit flange edge and the maximum opening angle is 15 degrees. The upper clamping block has a pin hole and a bushing hole spaced apart on the rear side of the notch. The positioning pin is located in the bushing hole. The lower clamping block has an opening at the pin hole and bushing hole of the upper clamping block.

2. The fixture for drilling and clamping flange edges of the fiberglass radome irregular surface unit as described in claim 1, characterized in that: A limiting stop is provided on one side of the surface of the lower clamping block at the bottom edge of the opening.

3. The flange edge drilling and clamping fixture for the irregular surface unit of the fiberglass radome according to claim 1 or 2, characterized in that: The locking nut is a treasury nut.

4. A method for drilling holes in the flange edge of a fiberglass radome irregular-shaped unit based on the clamping fixture described in any one of claims 1 to 3, characterized in that... Includes the following steps: Step 1: Loosen the locking nut, flip the screw to move it out of the notch between the upper and lower clamping blocks, and flip the upper clamping block. Step 2: Place the flange edge of the unit component on the surface of the lower clamping block, and position the limiting block against the flange edge of the unit component. Step 3: Flip the upper clamping block so that the upper clamping block and the lower clamping block cooperate to clamp the flange edge of the unit component. Insert the positioning pin into the bushing hole and abut against the flange edge of the unit component. The surface of the unit component has a concave hole that matches the positioning pin, so that the positioning pin and the hole on the flange edge of the unit component are aligned. Step 4: Turn the screw over so that it is located in the notch of the upper clamping block and the lower clamping block, tighten the locking nut, and cooperate with the limit pin to make the upper clamping block and the lower clamping block clamp the flange edge of the unit component, and fix the entire clamping fixture to the flange edge of the unit component. Step 5: Move the locating pin to the pin hole, guide the drill bit through the bushing hole to drill the flange edge of the unit component, and complete the single-hole drilling operation of the flange edge of the unit component.

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