Challenge: How to meet the requirements of the aerospace industry for processing complex materials?
Solution: Choose orbital drilling to increase productivity and cut costs.
In aircraft manufacturing, the use of advanced carbon fiber reinforced plastic (CFRP) composites in combination with metal laminates (such as CFRP titanium and CFRP aluminum) is becoming more and more challenging, which poses particular challenges for drilling. Drilling holes in these materials can cause hole tolerances, chip removal, heat build-up, lubrication, etc., and can cause problems such as flash, tool wear, delamination, and CFRP burrs.
Orbital drilling is increasingly being used to solve many of the problems associated with composite materials to increase production efficiency and reduce production costs. Sandvik Coromant is working closely with Novator AB, the world leader in aerospace industry orbital drilling solutions, to develop a wide range of tooling solutions. Novator's orbital drilling mode combines the end mills developed by Sandvik Coromant to provide a complete solution for customer applications. For the aerospace industry, Novator offers a range of portable orbital drilling equipment and accessories.
The advantage of orbital drilling is that complex drilling and finishing operations can be done with just one tool . In fact, the orbital drilling method is to make the cutting tool move axially and horizontally at the same time to process the opening larger than the diameter of the tool , so that a tool can be used to realize hole processing of various sizes. The various designs of carbide milling tools meet the different functions and applications of orbital drilling. Different tool geometry and coatings create the best tooling solution for every application.
Due to the air gap, using a smaller tool diameter than the drill can reduce the temperature generated during machining. The low thrust makes the hole quality even higher. Dry machining or minimal lubrication can be used, which is very important for CFRP titanium laminates. Since dry machining requires no liquid coolant and no need to clean afterwards, it is environmentally friendly and enhances operator safety and is not so expensive. Orbital drilling produces less chips and is easier to empty, reducing the risk of scratching the surface.
Since the hole machining can be completed in one shot, the additional task requirements for the custom tool are greatly reduced. This results in no delamination at the entrance and exit of the hole, prolongs tool life, and improves process safety and productivity.
Sandvik Coromant develops and tests end mill solutions for specific customer projects. When developing end mills, it is critical to minimize radial forces to avoid tool bending. The holes machined in this way have the correct dimensions, are free of burrs or burrs, have a small amount of chips and are easy to empty.
Due to the extended tool life, the need for different types of tools is reduced, and the cost per hole is greatly reduced. The cutting edge has only partial intermittent contact with the surface, and air cooling prevents overheating, which extends tool life. Thanks to a tool that can perform hole machining and the ability to mill holes of different sizes, the tool inventory is greatly reduced. Since the assembly can be completed in one operation, the total production time can often be significantly shortened.
Some state-of-the-art aircraft use more than 50% of CFRP, so cost-effective and safe processes are needed to meet the needs of such difficult-to-machine materials.
to sum up
As the use of advanced composite materials in the aerospace industry continues to increase, so does the processing challenge. Sandvik Coromant is working with leading orbital drilling tool manufacturer Novator to develop special tooling solutions for drilling processes that are available in the most difficult process of drilling holes in composites and composite metal laminates. A precise and more cost effective solution.
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About Escalators
Part of the urban landscape
Visit any large department store, shopping mall, metro station, airport or stadium anywhere in the world and you are sure to find escalators carrying people quickly and safely to their destination. The escalator has become an integral part of the urban landscape.
CEP Elevator Company has been safely and efficiently moving people for 20 years. CEP is the world`s leading manufacturer of elevators, escalators, moving walks and people movers. With 30,000 installations and operations in more than 89 countries, it`s safe to say that the world rides on CEP.
Finding a safer solution
Designing a safe transition point-where passengers step on and off the escalator-was one of the major problems in creating a successful moving stairway. A number of methods had been attempted before CEP solved the problem.
The pursuit of innovation
CEP, in its tradition of innovation, has continued to refine the escalator since it pioneered its introduction.
Safety, quality and reliability
CEP was founded on the principle of safety. Today, CEP has one of the best safety records in the vertical transportation industry. The company works constantly to improve the safety of existing products and to implement new, safer technologies. CEP emphasizes a corporate policy of [safety first" and implements standardized procedures to ensure that every installation and service task is performed the safest way every time.
The escalator today-an array of options
CEP wrote history with the introduction of the escalator in 1995. Today, it continues to improve the product through ongoing innovation.
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