CN116037981A - Stepped combination hole making device for aviation laminated materials - Google Patents

Abstract

The device comprises a pressing assembly and a drilling assembly, wherein the drilling assembly comprises a bracket, a double-head drilling tool assembly rotatably arranged on the bracket, and a driving assembly arranged on the bracket and used for driving the double-head drilling tool assembly to rotate; the pressing component comprises a pressing plate and a pressing head arranged on the pressing plate, a guide pillar is arranged on the pressing plate, a guide hole is arranged on the bracket, the guide pillar penetrates through the bracket and then is connected with a fixing nut, a spring is sleeved on the guide pillar, the upper end of the spring is in contact with the bracket, and the lower end of the spring is in contact with the pressing plate. The purpose of ladder combination system hole has not only been realized to this application, simultaneously, adopts the pressure head to compress tightly drilling position during the system hole for laminate material's interlayer clearance is littleer, can effectually reduce laminate material's material layer and take place bending deformation under the pressure of drilling tool, overcomes the separation of interlayer interface, increases the laminating degree between the layers, and then reaches the purpose that reduces the interlayer burr, improves system hole quality.

Description

A ladder combined hole-making device for aviation laminated materials

technical field

The present application relates to a hole-making device, in particular to a step-combined hole-making device for aviation laminated materials.

Background technique

With the continuous development of the aerospace industry, many products have put forward high-strength and lightweight requirements for materials. The laminate of carbon fiber composite material + aluminum alloy has the advantages of light weight, high strength, high wear resistance, good fatigue resistance, and high temperature resistance. Therefore, the laminate of carbon fiber composite material + aluminum alloy is being widely used in aviation Aerospace, and hole making is an important part of aerospace technology.

In the 9th issue of "Inspection and Quality" at the end of 2019, the title of the thesis is: Research on Precision Hole-making Process of Aircraft Laminated Materials. The material precision hole making process route is to first drill the carbon fiber layer (initial hole) by using a large-diameter drill, then use a small-diameter drill to drill the alloy layer, and finally use a large-diameter drill for reaming and reaming Holes (final holes), and then realize the drilling of carbon fiber-alloy laminated materials, and use small-diameter drills to drill holes on the alloy layer, which improves the cutting state of the alloy and reduces the cutting amount of the alloy layer when drilling the final hole, and then Improve the quality of drilling.

However, in actual operation, it is necessary to use two kinds of drill bits for drilling, which requires frequent replacement of drilling tools, which is inconvenient to operate and low in efficiency; at the same time, when drilling, it is easy to generate interlayer burrs and easily cause laminated materials Stress concentration reduces the quality of laminated materials.

Contents of the invention

The purpose of this application is to provide a step combination hole making device for aviation laminated materials, which can efficiently realize the step combination hole making, improve drilling efficiency, reduce interlayer burrs, and ensure the quality of laminated materials.

In order to solve the problems of the technologies described above, the technical solution adopted in this application is:

An aviation laminated material ladder combination hole-making device, including a pressing assembly and a drilling assembly, wherein the drilling assembly includes a bracket, a double-headed drilling tool assembly that is rotatably arranged on the bracket, and is set on the bracket for driving the double-head The driving assembly for the rotation of the drilling tool assembly; the pressing assembly includes a pressure plate, a pressure head arranged on the pressure plate, a guide post is arranged on the pressure plate, a guide hole is provided on the bracket, the guide post passes through the bracket and is connected with a fixed nut, and the spring set On the guide post, the upper end is in contact with the bracket, and the lower end is in contact with the pressure plate. The pressure plate and the pressure head are provided with round holes for the passage of the drill bits in the double-ended drill assembly. The diameters of the drill bits in the double-end drill assembly are different.

Wherein, the end of the indenter is provided with a hard rubber pad on the side in contact with the laminated material.

Further optimization, the bracket includes a left bracket and a right bracket. There are two sets of guide posts on the pressure plate, and each group has two guide posts. One set of guide posts is matched with the left bracket, and the other set is matched with the right bracket. Cooperate; the left bracket and the right bracket form the installation area, the double-ended drilling tool assembly is arranged in the installation area, and is rotationally connected with the left bracket and the right bracket through the rotating shaft, and the driving assembly is installed on the right bracket And be connected with the rotating shaft on the right side bracket.

Among them, the double-headed drilling tool assembly includes a mounting cylinder, a first drilling tool and a second drilling tool. Both ends of the mounting cylinder are provided with telescopic rods. The rotating shaft is arranged on both sides of the installation cylinder, and the installation cylinder is connected with the left bracket and the right bracket through the rotation shaft.

Wherein, the side of the installation cylinder is provided with ventilation holes.

For further optimization, the bracket also includes a connecting bracket, and the left bracket and the right bracket are connected to form an integral structure through the connecting bracket.

Wherein, the driving assembly includes a gear, a rack and a first telescopic rod, a support plate is arranged on the right side bracket, the first telescopic rod is arranged on the support board, a guiding square hole is arranged on the right side bracket, and the two ends of the rack are respectively provided with There are a first connecting part and a second connecting part, the first connecting part is connected with the first telescopic rod, the second connecting part is slidingly matched with the guide square hole, the gear is arranged on the rotating shaft on the right side bracket, and the gear and the rack are meshed with each other .

For further optimization, a connecting plate is provided on the right side bracket, and a mounting hole is provided on the connecting plate, and the connecting plate is used for connecting with a six-degree-of-freedom mechanical arm.

Wherein, a touch switch is arranged on the pressure plate, and the touch switch is used to connect with the control system of the six-degree-of-freedom mechanical arm.

Compared with the prior art, the present application has the following beneficial effects: the present application is mainly composed of a pressing assembly and a drilling assembly. In actual use, a double-headed drilling tool assembly is used to achieve the purpose of step drilling, and the pressing head After being in contact with the laminated material, the bracket continues to move towards the pressing plate, at this time the spring will be compressed, and the pressing head on the pressing plate is tightly pressed on the laminated material; at this time, the large diameter The drill bit drills the hole. After the drilling is completed, the drive assembly drives the double-head drill assembly to rotate 180°, so that the small-diameter drill bit in the double-head drill assembly drills the alloy layer, and finally the drive assembly drives the double-head drill assembly to rotate 180°. , using a large-diameter drill bit for drilling, this application not only achieves the purpose of step combination hole making, but also uses a pressure head to compress the drilled part during hole making, so that the interlayer gap of the laminated material is smaller, which can effectively The material layer of the laminated material is bent and deformed under the pressure of the drilling tool to overcome the separation of the interlayer interface and increase the degree of interlayer bonding, thereby achieving the purpose of reducing interlayer burrs.

Description of drawings

Fig. 1 is one of the overall structural diagrams of the present application.

Fig. 2 is the second schematic diagram of the overall structure of the present application.

Fig. 3 is a schematic diagram of the connection relationship between the connecting bracket of the present application and the left and right side brackets.

FIG. 4 is a schematic diagram of the overall assembly structure of the present application.

Figure 5 is a schematic diagram of the application.

Reference signs: 101-pressing assembly, 102-drilling assembly, 103-support, 104-double-ended drilling tool assembly, 105-driving assembly, 106-pressing plate, 107-pressure head, 108-guide column, 109-guide Hole, 110-Fixing nut, 111-Touch switch, 112-Hard rubber pad, 113-Left bracket, 114-Right bracket, 115-Rotary shaft, 116-Installation cylinder, 117-First drilling tool, 118- Second drilling tool, 119-telescopic rod, 120-connecting bracket, 121-gear, 122-rack, 123-first telescopic rod, 124-support plate, 125-first connecting part, 126-second connecting part, 127-guiding square hole, 128-connecting plate, 129-installation hole, 130-six degrees of freedom mechanical arm, 131-laminated material, 132-round hole.

Detailed ways

Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

Embodiment one

Referring to Fig. 1-Fig. 5, the present embodiment discloses a kind of ladder combined hole-making device for aviation laminated materials, including a pressing assembly 101 and a drilling assembly 102, wherein the drilling assembly 102 includes a bracket 103, which is rotatably arranged on the bracket 103 The double-ended drill assembly 104 on the top and the drive assembly 105 arranged on the bracket 103 for driving the double-ended drill assembly 104 to rotate; the pressing assembly 101 includes a pressing plate 106, a pressing head 107 arranged on the pressing plate 106, and A guide post 108 is provided, and a guide hole 109 is provided on the bracket 103. The guide post 108 passes through the bracket 103 and is connected with a fixed nut 110. The spring is set on the guide post 108, and the upper end is in contact with the bracket 103, and the lower end is in contact with the pressure plate 106. , The pressing plate 106 and the pressing head 107 are provided with a circular hole 132 for the passage of the drill bit in the double-ended drilling tool assembly 104, and the diameters of the drill bits in the double-ended drilling tool assembly 104 are different.

This application is mainly composed of a pressing assembly 101 and a drilling assembly 102. In actual use, a double-headed drilling tool assembly 104 is used to achieve the purpose of step drilling. After the pressing head 107 is in contact with the laminated material 131, the bracket 103 continues Move toward the pressing plate 106 direction, at this time the spring will be compressed, and the pressing head 107 on the pressing plate 106 is tightly pressed on the laminated material 131; at this time, the large-diameter drill bit in the double-ended drilling tool assembly 104 is used for drilling After the drilling is completed, the drive assembly 105 drives the double-ended drill assembly 104 to rotate 180°, so that the small-diameter drill bit in the double-end drill assembly 104 drills the alloy layer, and finally the drive assembly 105 drives the double-end drill assembly 104 to rotate 180° °, using a large-diameter drill bit for drilling, this application not only achieves the purpose of step combination hole making, but also uses the pressure head 107 to compress the drilled part during hole making, so that the interlayer gap of the laminated material 131 is smaller , can effectively reduce the bending deformation of the material layer of the laminated material 131 under the pressure of the drilling tool, overcome the interlayer interface separation, increase the bonding degree between the layers, and then achieve the purpose of reducing interlayer burrs.

Wherein, the end of the indenter 107 is provided with a hard rubber pad 112 on the side in contact with the laminated material 131; the hard rubber pad 112 provided can protect the laminated material 131 and avoid damage to the laminated material 131 during compression. layer material 131, resulting in a reduction in the quality of the laminated material 131.

Wherein, the bracket 103 includes a left side bracket 113 and a right side bracket 114, there are two groups of guide posts 108 on the pressing plate 106, and each group has two guide posts 108, wherein one set of guide posts 108 cooperates with the left side bracket 113, The other group cooperates with the right side bracket 114; the left side bracket 113 and the right side bracket 114 form an installation area, and the double-headed drilling tool assembly 104 is arranged in the installation area, and rotates with the left side bracket 113 and the right side bracket 114 through the rotating shaft 115 Connected together, the drive assembly 105 is installed on the right side bracket 114 and connected with the rotating shaft 115 on the right side bracket 114 .

In this embodiment, the double-headed drilling tool assembly 104 includes a mounting cylinder 116, a first drilling tool 117, and a second drilling tool 118. Both ends of the mounting cylinder 116 are provided with telescopic rods 119, and the first and second drilling tools are respectively provided with Both ends of the installation cylinder 116 are connected with the telescopic rods 119 , the rotating shaft 115 is arranged on both sides of the installation cylinder 116 , and the installation cylinder 116 is connected with the left support 113 and the right support 114 through the rotation shaft 115 .

In this embodiment, the first drilling tool 117 is a large-diameter drilling tool, and the second drilling tool 118 is a small-diameter drilling tool; 116, press head 107 on laminated material 131, and keep support 103 still at this moment; Telescopic rod 119 drives first drilling tool 117 to move towards laminated material 131, and the drill bit in the first drilling tool 117 is opposite The carbon fiber layer of the laminated material 131 is drilled. After the drilling is completed, the telescopic rod 119 drives the first drilling tool 117 to telescopically return to the installation hole 129. At this time, the drive assembly 105 drives the installation cylinder 116 to rotate 180°, so that the second The drilling tool 118 is aligned with the stacked material 131, and then the telescopic rod 119 connected with the second drilling tool 118 drives the second drilling tool 118 to drill the stacked and alloy layers close to the stacked material 131; , it can be circulated to the first drilling tool 117 for drilling the final hole, so that the step combination hole forming of the laminated material 131 can be realized.

In actual use, the first and second drilling tools can be the drilling tools in the prior art, which will not be repeated here.

In actual use, in order to make the device more stable when making holes, the bracket 103 also includes a connecting bracket 120. The left side bracket 113 and the right side bracket 114 are connected into an integral structure through the connecting bracket 120, which is convenient for realizing the left side bracket 113 and the right side. Synchronous movement of the carriage 114. At the same time, it makes the structure more stable.

In this embodiment, the driving assembly 105 includes a gear 121, a rack 122, and a first telescopic rod 123, a support plate 124 is arranged on the right side bracket 114, the first telescopic rod 123 is arranged on the support plate 124, and the right side bracket 114 A guide square hole 127 is arranged on the top, and a first connection part 125 and a second connection part 126 are respectively provided at both ends of the rack 122. The first connection part 125 is connected with the first telescopic rod 123, and the second connection part 126 is connected with the guide square hole. 127 is slidingly fitted, and the gear 121 is arranged on the rotating shaft 115 on the right side bracket 114, and the gear 121 and the rack 122 are meshed with each other.

Like this, drive gear rack 122 to move by first telescoping rod 123, can realize the driving to gear 121, the driving of rotating shaft 115 can be realized by gear 121 rotation, the first drilling tool 117 and the second drilling tool 117 can be realized by the rotation of installation cylinder 116. tool 118 switching; of course, in actual use, other drive components can also be used in structure, such as stepping motors, and the stepping motors are directly connected to the rotating shaft 115 to realize the driving of the rotating shaft 115. Of course, it is also possible to use Other drive assembly structures in the prior art only need to drive the rotating shaft 115 to rotate to realize the rotation of the installation cylinder 116 .

It should be noted that, in actual use, the right side bracket 114 is provided with a connecting plate 128 , and the connecting plate 128 is provided with a mounting hole 129 , and the connecting plate 128 is used for connecting with the six-degree-of-freedom mechanical arm 130 .

In this way, the driving of the hole-making device can be realized through the six-degree-of-freedom robot arm 130, and the purpose of automatic hole-making is realized. The six-degree-of-freedom robot arm 130 moves the hole-making device to the 3-5cm of the laminated material 131, and then slowly After contacting the indenter 107 with the laminated material 131 and continuing to press down so that the bracket 103 moves toward the pressing plate 106 for a certain distance, the six-degree-of-freedom mechanical arm 130 remains in a static state at this time, and the specific moving distance is determined according to the actual situation to ensure The pressing head 107 is tightly pressed on the laminated material 131 without causing deformation of the laminated material 131 , so that the interlayer gap of the laminated material 131 is smaller and interlayer burrs are reduced. The six-degree-of-freedom robot arm 130 is mainly used to realize the positioning of drilling holes, and it only needs to adopt the structure of the six-degree-of-freedom robot arm 130 in the art, and will not be repeated here.

In actual use, a touch switch 111 is provided on the pressing plate 106 , and the touch switch 111 is used to connect with the control system of the six-degree-of-freedom robot arm 130 . In this way, when the bracket 103 moves toward the pressing plate 106 and touches the touch switch 111, the touch switch 111 transmits a signal to the control system of the six-degree-of-freedom mechanical arm 130, and the system can control the six-degree-of-freedom mechanical arm 130 to stop. In this way, in actual use, only the distance between the touch switch 111 and the bracket 103 needs to be adjusted to adjust the pressure of the laminated material 131; the distance between the touch switch 111 and the bracket 103 can be adjusted by increasing or decreasing Gaskets can be implemented by those skilled in the art according to the actual situation, and will not be elaborated here.

Embodiment two

This embodiment discloses a hole-making device, which is basically the same as the first embodiment, the difference being that, in this embodiment, the side of the installation cylinder 116 is provided with ventilation holes; it is convenient to achieve the purpose of ventilation and heat dissipation.

Claims (9)

1. An aviation laminated material ladder combined hole-making device is characterized in that: it includes a pressing assembly and a drilling assembly, wherein the drilling assembly includes a support, a double-headed drilling tool assembly that is rotated and arranged on the support, and is arranged on the support. The driving assembly used to drive the rotation of the double-headed drilling tool assembly; the pressing assembly includes a pressure plate, a pressure head arranged on the pressure plate, a guide post is arranged on the pressure plate, and a guide hole is provided on the bracket. After the guide post passes through the bracket, it is connected with a The fixed nut is connected, the spring is set on the guide post, and the upper end is in contact with the bracket, and the lower end is in contact with the pressure plate. The pressure plate and the pressure head are provided with a round hole for the drill bit in the double-ended drill assembly. The two ends of the double-end drill assembly Drills come in different diameters. 2 . The stepwise combined hole-making device for aviation laminated materials according to claim 1 , wherein a hard rubber pad is provided on the side of the end of the indenter that is in contact with the laminated material. 3 . 3. A kind of aviation laminated material step combination hole-making device according to claim 1, characterized in that: the bracket includes a left side bracket and a right side bracket, and there are two groups of guide posts on the pressing plate, each group has two One set of guide posts cooperates with the left bracket, and the other group cooperates with the right bracket; the left bracket and the right bracket form an installation area, and the double-ended drilling tool assembly is arranged in the installation area, and is connected with the shaft through the rotating shaft. The left side bracket and the right side bracket are rotatably connected together, and the drive assembly is installed on the right side bracket and connected with the rotating shaft on the right side bracket. 4. A ladder combined hole-making device for aviation laminated materials according to claim 3, characterized in that: the double-headed drilling tool assembly includes a mounting cylinder, a first drilling tool and a second drilling tool, and both ends of the mounting cylinder are A telescopic rod is provided, the first and second drilling tools are respectively arranged at both ends of the installation cylinder and connected with the telescopic rod, the rotating shaft is arranged on both sides of the installation cylinder, and the installation cylinder is connected with the left bracket and the right bracket through the rotation shaft . 5 . The stepwise combined hole-making device for aviation laminated materials according to claim 4 , wherein ventilation holes are provided on the side of the installation cylinder. 6 . 6 . The ladder combined drilling device for aviation laminated materials according to claim 3 , wherein the bracket further includes a connecting bracket, and the left side bracket and the right side bracket are connected to form an integral structure through the connecting bracket. 7 . 7. A kind of hole-making device of aviation laminated material step combination according to claim 3, characterized in that: the driving assembly includes a gear, a rack and a first telescopic rod, a support plate is arranged on the right side bracket, and the first telescopic rod The rod is set on the support plate, the right side bracket is provided with a guide square hole, the two ends of the rack are respectively provided with a first connecting part and a second connecting part, the first connecting part is connected with the first telescopic rod, and the second connecting part is connected with the The guide square hole is slidably matched, and the gear is arranged on the rotating shaft on the right side bracket, and the gear and the rack are meshed with each other. 8. According to any one of claims 1-7, a ladder combined hole-making device for aviation laminated materials is characterized in that: a connecting plate is provided on the right side bracket, and a mounting hole is provided on the connecting plate. The connecting plate is used to connect with the six-degree-of-freedom mechanical arm. 9 . The ladder combined hole-making device for aviation laminated materials according to claim 8 , wherein a touch switch is provided on the pressing plate, and the touch switch is used to connect with the control system of the six-degree-of-freedom mechanical arm.

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