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Technology article

Cutting tools need Performance Evaluation

Author:ZHIDAHARDWARE Comefrom: Date:2012-11-27 15:22:15 Hits:0 Comment:0

 A higher selling price of the tool may ultimately prove its cost is much lower than the price cheaper similar tool. For example, if a tool of the price three times higher than any other tool, but its processing performance than other tool to five times better, then, it will cost 40% less than the lower-priced tool.

    Of course, high-end tools are not always able to provide a good five times the processing performance, but again, it's price is not always three times more expensive. Typically, a similar tool price gap is not so large, but the principle is the same. The difficulty lies in how to accurately quantify the processing performance tool.

    Although in theory, for a particular tool, to create a series of performance evaluation index is possible, however, its actual machining performance but may be because of various variables (including machine tools, workpiece material, tool holder, the workpiece holder very different and vastly different cooling / lubrication, etc.). This means that the assessment of a tool the only accurate method of processing performance, under the real conditions of the specific applications of the tool machining cutting tests.

    Quantitative evaluation tool processing performance is a relatively straightforward way (especially in processing large quantities in the production environment). A tool processing performance can be measured in accordance with the cutting time or the number of workpiece machining.

However, in some smaller processing volume production environments (such as mold), a tool during its life, may be used in several different processing or repeat processing for regular, therefore, in order to achieveaccurate assessment tool life and machining performance, you may need to put more effort even need specialized new technology - such as with a radio frequency identification (RFID) device for monitoring tool usage tool chuck.

    The cutting tool manufacturer to provide users with test procedures is a common practice. These programs can produce a "win-win" results, on the one hand, the supplier will be able to get the opportunity to showcase new products; On the other hand, the user is likely to improve its processing. Benefits obtained may not just extend tool life: processing costs by greatly reducing tool change time and downtime, savings should be considerable. In addition, knowledge of the tool cutting tests may be valuable: new processing concepts, processing methods, or processing strategy can be implemented; through the use of a new tool being developed technology, a combination or omitted processing operations.

The following example shows that such cutting tests, as well as the appropriate choice of Carbide End Mills (despite the higher price of this tool, but compared with the relatively inexpensive tool, but it can significantly reduce the processing costs) the importance of. Recently, a manufacturer used in processing and an advanced performance of the milling cutter, so that each workpiece is a 50% reduction in the actual processing cost. This cutter uses a diamond grinding knife slot, the internal cooling structure and geometry of the cutting edge pre-prepared, the cutting speed is increased by 22%, a 85% increase in feed rate.

    At the same time, the higher price of tool can be processed 41 workpiece, and inexpensive tool can only be processed 9 workpiece. If a constant tool life, and the machine cost per hour is calculated, the price is cheap tool 2 times, even if high-grade tool, each of its processing cost can also be reduced by 51%. In fact, the overall level of performance with the high-end tool quite cheap tool must be its price and then reduced by 70%.


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