CN215791885U

CN215791885U - Combined material thin wall long tube beam shaping frock

Info

Publication number: CN215791885U
Application number: CN202121771170.1U
Authority: CN
Inventors: 闵捷; 彭艳琴; 杨纾宸; 余佳; 袁琦; 黄文轩
Original assignee: Jiangxi Changhe Aviation Industries Co Ltd
Current assignee: Jiangxi Changhe Aviation Industries Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-02-11
Anticipated expiration: 2031-07-30

Abstract

The utility model belongs to a composite material forming technology, and particularly relates to a composite material thin-wall long tubular beam forming tool. The clamping device comprises a core rod, a square frame, a clamp A, a clamp B, a bolt and a nut, wherein the square frame is coated by 4 core rods to form an outer circle and inner square shape, and the two ends of the clamp A and the clamp B clamp the 4 core rods and are fixed through the bolt and the nut. The male die and the female die are transferred once instead of multiple times, so that the production efficiency is improved, the number of times of intermediate transfer procedures is reduced by integral transfer, and the risk of possible human misoperation in the transfer process is reduced.

Description

Combined material thin wall long tube beam shaping frock

Technical Field

The utility model belongs to a composite material forming technology, and particularly relates to a composite material thin-wall long tubular beam forming tool.

Background

The horizontal tail of the helicopter mainly generates pneumatic lifting force and moment to balance the moment generated by the non-coaxial tension of the rotor wing and the gravity, and the two horizontal stabilizing surfaces and the helicopter body are connected with each other through a pipe beam and a rear joint. The tubular beam mainly bears the forces and moments in the swinging, twisting and shimmying directions generated by the flat tail.

The tubular beam adopted by the domestic helicopter is of a circular section, and the rigidity in all directions is the same. The composite tubular beam is adopted to replace a metal tubular beam, so that the weight of the tubular beam can be greatly reduced, the strength and the rigidity are improved, and the forming difficulty and the workload of the composite tubular beam are large.

A certain machine pipe beam is 2m long, the outer diameters of two ends are 10cm, and the forming is generally carried out by adopting a male die layering and female die transferring curing method, namely, layering is carried out on a male die core rod and vacuumizing is carried out, then the male die core rod is transferred to a female die after being laid for a plurality of layers in a whole mode and is vacuumized by a tubular vacuum bag, and in the transferring process, slight gaps are possibly formed in the middle of the layering due to difference of tooling molded surfaces attached by pre-dipping materials, so that non-destructive detection is unqualified. And the ply transfer can only transfer 6 layers at most once, the composite material tubular beam has 40 layers of integral plies, the ply transfer times are many, the time needed is long, and the risk of human misoperation is high.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is: the tool is simple and easy to operate, the male die and female die rotating efficiency is improved, and gaps caused by transfer are reduced.

1. The male die is changed into a block structure from an integral core rod, the core rod is divided into the core rod and a square frame by the integral core rod, a clamp is additionally arranged outside the core rod, a cushion block is arranged at one end of the core rod, the outer surface of the core rod is a laying layer surface, the appearance of the core rod is ensured by the clamp when the layer is not laid, and the inner shape is ensured by the square frame;

2. laying layers on the assembled male mold during molding, transferring the whole male mold to a female mold after finishing laying layers, and manufacturing a tubular vacuum bag to enter a tank for curing;

3. when the whole transfer is carried out, the bolt is firstly unscrewed, the square frame is knocked by the cushion block, the square frame is taken out, the 4 core rods are sequentially taken out, and the laid prepreg is thick and has certain rigidity, so that the epoxy wood core rods can be temporarily supported without deformation.

Technical scheme

The utility model provides a combined material thin wall long tube beam shaping frock, includes: the core rod assembly comprises a core rod 1, a square frame 2, a hoop A4, a hoop B5, a bolt 7 and a nut 8, wherein the periphery of the square frame 2 is wrapped by 4 core rods 1 to form an outer circle and an inner square shape, and the 4 core rods 1 are clamped at two ends of the hoop A4 and the two ends of the hoop B5 and fixed through the bolt 7 and the nut 8.

The cushion block 6 is arranged in the square frame 2, and the shape of the cushion block 6 is matched with that of the inner frame of the square frame 2.

The lifting device is characterized by further comprising a support 3, the lifting position of the support 3 is the part outside a layering allowance line of the core rod 1 and outside the clamping positions of the clamp A4 and the clamp B5, and the height of the support 3 is 0.9-1 m.

The tool is arranged outside the laying allowance lines on the left side and the right side of the thin-wall long tubular beam.

The tooling is 50mm away from the allowance line.

The materials of the square frame 2, the cushion block 6, the bracket 3, the clamp A4 and the clamp B5 are steel.

The core rod 1 is made of epoxy wood pattern.

Technical effects

The male die and the female die are transferred once instead of multiple times, so that the production efficiency is improved, the number of times of intermediate transfer procedures is reduced by integral transfer, and the risk of possible human misoperation in the transfer process is reduced.

Drawings

FIG. 1 is a partial front view of a novel composite material thin-wall long tubular beam forming tool;

wherein: a is a tubular beam laying area, B is a laying allowance line, and C is a vacuum bag manufacturing area;

FIG. 2 is a sectional view of a main structure of a novel composite material thin-wall long tubular beam forming tool;

the device comprises a core rod 1, a square frame 2, a support 3, a hoop A4, a hoop B5, a cushion block 6, a bolt 7 and a nut 8.

Detailed Description

The utility model is described in further detail below with reference to a specific example:

the method comprises the following steps: the core rod assembly comprises a core rod 1, a square frame 2, a hoop A4, a hoop B5, a bolt 7 and a nut 8, wherein the periphery of the square frame 2 is wrapped by 4 core rods 1 to form an outer circle and an inner square shape, and the 4 core rods 1 are clamped at two ends of the hoop A4 and the two ends of the hoop B5 and fixed through the bolt 7 and the nut 8.

The cushion block 6 is arranged in the square frame 2, and the shape of the cushion block 6 is matched with that of the inner frame of the square frame 2. The shape of box 2 can be checked to determine if it is deformed.

The lifting device is characterized by further comprising a support 3, the lifting position of the support 3 is the part outside a layering allowance line of the core rod 1 and outside the clamping positions of the clamp A4 and the clamp B5, and the height of the support 3 is 0.9-1 m. The layer is laid conveniently when the person stands naturally.

The distance between the tool and the allowance line is 50mm, and the distance is used for manufacturing a vacuum bag and performing vacuum compaction.

The square frame 2, the cushion block 6, the bracket 3, the clamp A4 and the clamp B5 are made of steel, and strength is guaranteed.

The core rod 1 is made of an epoxy wood model, is low in density and is light as much as possible.

The inner profile of the core rod 1 is ensured by the square frame 2, the outer profile is ensured by the clamp A4 and the clamp B5, and the inner shape of the square frame 2 is maintained by the cushion block 6;

1. the tool die body extends 130mm outwards along two ends of the theoretical appearance of the part, wherein the unilateral allowance line is 15mm, the unilateral bag making area is 50mm, the unilateral bag making area is supported by a bracket 3 and is about 1m away from the ground, and manual layering is facilitated; 2. the bolt 7 and the nut 8 are used for fixing the clamp 14 and the clamp 25;

3. the core rod 1 with the integral structure is made of an epoxy wood mold, the square frame 2 is designed to be hollow, and a pad is additionally arranged at one end

The block 6 is used for reducing the weight to the maximum extent while ensuring the molded surface;

when the part is laid, all the components are installed together, after the laying work is finished completely, the clamps A4 and B5 at two ends are disassembled, then the square frame 2 is drawn out from one end, finally 4 core rods 1 are taken out in sequence, 40 layers of pre-dipped material laying layers are formed, the epoxy wood core rods are light and convenient, the appearance of the part can be kept, and the part is transferred to a female die tool once and is manufactured into a tubular vacuum bag to be filled into a tank for curing.

Claims

1. The utility model provides a combined material thin wall long tube beam shaping frock, its characterized in that, includes plug (1), square frame (2), clamp A (4), clamp B (5), bolt (7), nut (8), square frame (2) adopt 4 plug (1) cladding back to form excircle inside square shape all around, and clamp A (4) and clamp B (5) both ends press from both sides tight 4 plug (1), and are fixed through bolt (7), nut (8).

2. The tool for forming the composite material thin-wall long pipe beam as claimed in claim 1, further comprising a cushion block (6), wherein the cushion block (6) is arranged in the square frame (2), and the shape of the cushion block is matched with that of the inner frame of the square frame (2).

3. The composite material thin-wall long pipe beam forming tool according to claim 1, further comprising a support (3), wherein the lifting position of the support (3) is the part outside a layering allowance line of the core rod (1) and outside the clamping positions of the clamp A (4) and the clamp B (5), and the height of the support (3) is 0.9-1 m.

4. The tool for forming the composite material thin-walled long tubular beam as claimed in claim 1, wherein the tool is arranged outside the laying allowance lines on the left side and the right side of the thin-walled long tubular beam.

5. The tool for forming the composite material thin-walled long tubular beam as claimed in claim 1, wherein the tool is 50mm away from the allowance line.

6. The tool for forming the composite material thin-wall long pipe beam as claimed in claim 1, wherein the square frame (2), the cushion block (6), the bracket (3), the clamp A (4) and the clamp B (5) are made of steel.

7. The tool for forming the composite material thin-walled long tubular beam as claimed in claim 1, wherein the core rod (1) is formed by an epoxy wood mold.