Guide to CNC Machining for Aerospace – Aerospace Parts Machining Features and Problems | CNCLATHING

2020.5.20

CNC machining technology can not only ensure the precision and quality of aviation parts, but also improve the productivity, which is conducive to the production of a variety of small and medium batch of CNC aerospace parts with high efficiency. What are the features of aircraft components produced with CNC machines? What problems in the process and how to solve them?

CNC Aerospace Parts Machining Features - What Aviation Components are Produced in CNC Machining

Compare with other industries, aerospace parts have some remarkable characteristics. Aerospace parts made in exquisite structure, high machining accuracy, stable and reliable quality, so a large number of boring machines, machining centers, and other processing equipment with high machining accuracy and low surface roughness are used. CNClathing.com process aerospace CNC machined parts in strict accordance with the specified requirements, and the processing and inspection of each part are recorded in detail to make the parts traceable.

1. Complex, small-batch and diverse types

Due to the complexity and variety of modern aircraft parts, it is impossible to use large-scale assembly line production to improve efficiency and reduce costs, the CNC machining aerospace parts also adapt the small batch production.

 

2. Integrated structure

The design of aviation parts tends to be more complex and integrated with the development of modern aerospace and CNC technology, which simplifies the assembly and improves the structural performance, which also makes the CNC machining process is more difficult.

 

3. Thin-wall and large size

In order to control the weight of the airplane, a remarkable feature of the components are thin-walled, in addition, many parts of large-scale aircraft are in large size, the deformation should be strictly controlled during the manufacturing process.

 

4. Large material removal rate

In many cases, the material removal rate of an aircraft part is higher than 90%, the cutting efficiency has a great impact on the production cycle and cost. 

 

5. High-quality requirements

The safety is of vital importance during the flight, so strict quality control of aerospace parts are necessary. 

 

6. Multiple materials

In order to reduce the structural mass of the aircraft, in addition to the use of reasonable structures, the most effective method is to select materials with high strength, high stiffness and light weight. Secondly, according to different flight conditions and working environments, the materials are required to have certain high/low-temperature resistance, corrosion resistance and more performance. The commonly used aerospace materials are aluminum alloy, magnesium alloy, alloy steel, titanium alloy, composite material, etc.

Problems in CNC Machining for Aerospace Parts

1) Mixed production line, low degree of specialization and integration, unreasonable layout, cross production of various types of products, greatly restricts the improvement of production efficiency. 

2) In the process of CNC machining, program adjustment, fixture preparation, tool preparation, and parts detection take up more time, and the machining efficiency is reduced. The cutting efficiency is not high and the high-speed cutting application takes a low proportion.

3)  Low level of informatization restricts the efficient operation of production and research.

4)  Deformation control of large structures is still a problem.

5)  The development cost and the risk are high.

How to Solve the Aerospace Components Machining Problems

1) Based on the product characteristics and types, divided the manufacturing system into specialized production lines

2)  Design the fixture correctly and shorten the preparation and clamping time of workpiece, improves the efficiency and reliability

3)  Invest funds to expand the equipment scale, especially the large high-speed milling machines

4)  Realize the information management and optimal configuration of tools

5)  Apply CNC machining simulation technology

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