Constantly new standards for cutting tool technology

Cutting tool technology is rapidly evolving to meet changing needs and meet the tougher challenges from the workpiece material. Today's machining shop needs to re-examine tools with different perspectives.

In order to meet various needs, the use of advanced tools can improve the processing capacity of the workshop. The tool shown in Figure 1 is a hard material turning tool from Diamond Innovations. Cutting tool technology is rapidly developing, so correct knife selection can make the process happen in essence. In the metal processing industry, there is no other choice than advanced technology. The demand for machining will be very large in the future, and only advanced technology can meet this huge demand.

Mr. Chris Mills, project manager of Aerospace Development Division of Sandvik Coromant Company, pointed out that taking the space industry as an example, in the next 20 years, in order to meet the production demand of the aerospace industry, the production processing capacity must be tripled from now on. How to achieve this goal?

Will the processing capacity be increased by a factor of three, will it simply be possible to increase the number of processing machines by three times, while the processing technology still maintains its current level today? He said that such a situation cannot actually occur. If you multiply the number of machines in the state of the art by 3, it means that the number of machine operators will increase by the same multiple. This situation is simply unimaginable because it is very difficult for the factory to employ qualified workers who can perform the operations of the processing machinery.

Therefore, increasing triple capacity needs to be obtained from the ever-evolving advanced technology. Only by this way can an existing number of metal processing operators monitor a large number of machining operations.

Where do these advanced technologies come from? Of course, these technologies also involve the development of the machine tool itself. Now, the machining speed and machining accuracy of the machine tools are getting higher and higher, however, the workpieces themselves have not developed at the same incremental level, although they are also undergoing substantial changes. Nowadays, the processed workpieces not only require higher processing precision, delivery time, and quality, but many workshops are also faced with more and more difficult-to-machine material problems that have not been encountered before. These materials include titanium alloys, nickel-based alloys, and compacted graphite cast iron (CGI), not to mention the fact that, in some cases, composite materials also replace metal materials.

In other words, the development of workpiece materials is faster and more variable than the machine tools that machined them. There is a certain gap between the machine tool and the part material. In order to narrow or even exceed this gap, the fastest growing technology comes from metal cutting tools, and its development speed exceeds any other processing technology.

As it turns out, the development and change of cutting tools is so great that no matter how large a processing factory, it needs to re-evaluate the processing ideas of its tools. Not only do you need to recheck the tool selection, but you must also rethink some of the basic factors that affect the tool. But some of these core ideas are outdated and the tooling standards have changed.

Recently, the three major companies involved in cutting tools have proposed how the machining shop should now think about cutting tools in different ways. These companies are: Diamond Innovations - the world's leading provider of CBN and polycrystalline diamond (PCD) materials for tools; Precision Dormer - a coalition of two tool companies, dozens It has been providing special technology for high-efficiency drilling and threading for many years; Sandvik Coromant Co., Ltd. is the world's first metalworking tool supplier. All engineering and technical personnel of the three companies listed some of the major factors that currently have a fundamental impact on the nature and use of tools:

Challenging materials, including alternative materials and difficult-to-machine alloy materials. Some of these materials are less than 25% of the steel, and their cost per pound can reach several hundred dollars.

Parts with increasingly complex geometric shapes, such as aircraft parts with thin wall thickness and complex shapes;

Large parts, especially the demand for turbines and various heavy equipment, are increasing. The high-cost production of each part places more stringent requirements on the processing of these parts;

The requirements for professional quality and performance are getting higher and higher, such as the requirements for the typical fatigue strength of the surfaces of aircraft parts.

All of these factors have prompted those leading machining shops to consider the related tooling issues. Diamond Innovations, Precision Dormer, and Sandvik Coromant have put forward five methods in particular. The processing shop must use these five methods to think differently about their tool technology and the companies that provide this technology. The five new criteria for selecting tools are: to increase the efficiency of the machine tool, to meet the needs of application expertise, to increase the percentage of diamond tool applications, to focus on the largest source of costs, and to consider tooling issues from the outset.

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