In aircraft manufacturing, more and more advanced carbon fiber-reinforced plastic composites are used in conjunction with metal laminations, which presents special challenges for drilling. Drilling on these materials can cause hole tolerances, chip evacuation, heat build-up, lubrication, etc., and can cause flashing, tool wear, delamination, and CFRP burr.
Track drilling is increasingly used to solve such 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 orbital drilling solutions for the aerospace industry, to develop various tooling solutions. Novator's orbital drilling model, combined with a special milling cutter developed by Sandvik Coromant, provides a complete solution for customer applications. For the aerospace industry, Novator offers a range of portable track drilling devices and accessories.
The advantage of rail drilling is that complex drilling and finishing operations can be accomplished with just one tool. In fact, the method of orbital drilling is to allow the cutting tool to move axially and horizontally at the same time to process an opening that is larger than the diameter of the tool, so that a tool can be used to realize a variety of hole sizes. Different designs of carbide milling cutters fulfill different functions and applications of track drilling. Different tool geometries and coatings create the best tool solution for each application.
Due to the air gap, using a smaller tool diameter than drilling reduces the temperature generated during machining. The low thrust makes the hole higher quality. Dry machining or minimal lubrication can be used, which is very important for CFRP titanium stacks. Since dry processing eliminates the need for liquid coolant and does not require subsequent cleaning, it is both environmentally friendly and enhances operator safety, and is not as expensive. The orbital drilling method produces a small amount of chips and is easy to empty, thus reducing the risk of scratching the surface.
Because the hole machining can be completed once, the additional task requirements of the custom tool are greatly reduced. This results in no delamination at the entry and exit points 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 crucial to minimize radial forces to avoid tool bending. 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.
As the tool life is extended, 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, plus air cooling prevents overheating, which extends tool life. Because one kind of tool can finish the hole processing, and can mill different size hole, this makes the tool stock can be reduced greatly. As assembly can be completed in one operation, the total production time can often be significantly shortened.
Some of the latest aircrafts use more than 50% of CFRP and therefore require cost-effective and safe processes to meet the needs of such difficult-to-machine materials.
Track drilling is increasingly used to solve such 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 orbital drilling solutions for the aerospace industry, to develop various tooling solutions. Novator's orbital drilling model, combined with a special milling cutter developed by Sandvik Coromant, provides a complete solution for customer applications. For the aerospace industry, Novator offers a range of portable track drilling devices and accessories.
The advantage of rail drilling is that complex drilling and finishing operations can be accomplished with just one tool. In fact, the method of orbital drilling is to allow the cutting tool to move axially and horizontally at the same time to process an opening that is larger than the diameter of the tool, so that a tool can be used to realize a variety of hole sizes. Different designs of carbide milling cutters fulfill different functions and applications of track drilling. Different tool geometries and coatings create the best tool solution for each application.
Due to the air gap, using a smaller tool diameter than drilling reduces the temperature generated during machining. The low thrust makes the hole higher quality. Dry machining or minimal lubrication can be used, which is very important for CFRP titanium stacks. Since dry processing eliminates the need for liquid coolant and does not require subsequent cleaning, it is both environmentally friendly and enhances operator safety, and is not as expensive. The orbital drilling method produces a small amount of chips and is easy to empty, thus reducing the risk of scratching the surface.
Because the hole machining can be completed once, the additional task requirements of the custom tool are greatly reduced. This results in no delamination at the entry and exit points 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 crucial to minimize radial forces to avoid tool bending. 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.
As the tool life is extended, 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, plus air cooling prevents overheating, which extends tool life. Because one kind of tool can finish the hole processing, and can mill different size hole, this makes the tool stock can be reduced greatly. As assembly can be completed in one operation, the total production time can often be significantly shortened.
Some of the latest aircrafts use more than 50% of CFRP and therefore require cost-effective and safe processes to meet the needs of such difficult-to-machine materials.
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