Technical Info

The influence of thinking mode on CBN cutting tools            

     
      There always is a customary practice, we always think that’s the problem of tools if there are some problem during machining, a bulk of work and solution all focus on tools. In fact, cutting processing is a system question, tool is only one part of this system. Machine, work piece blank, clamping, clamping mode and coolant comprise this system in cutting processing.

　　 Tool is a subsystem in this section, includes tool structure, clamping, process precision of holder, shim material, tool angle, tool size, thickness and matching cutting parameter, etc.
 

        All of these factors are composited together, affect the precision and efficiency, etc. Any factor of these factors was changed will affect the out-put, processing efficiency and processing result of the system.

        We should apply systemic concept and systemic method and  take relevant action to solve the problem and the most play the role of tools during machining.
 

        Technologist design machining process and lay down process route according to drawing design, machine, material of work pieces, tools system and numerical control programming, etc during cutting machining. All above only are researched separately. Although the R&D got important progress and achievement in many fields of machining and manufacturing during a long time, but there have no important breakthrough on improving cutting efficiency greatly.
 

        Therefore, it’s a systematic engineering for application and research cutting processing technology on machine facility, material of work pieces, tools system and programming technique, numerical control process optimization and organization.

        Cutting condition should be created according to machine characteristics, work piece cutting characteristics and work pieces’ special condition, etc. Design digital control process program, choose tool system, optimize programming, setting test method and date exchange, etc. To achieve the full play to the whole system resource capability of digital control machining.

 

     1. For the edge without any treatment, its sharp edge apply to finishing specially. The more sharp of the edge, the better to control the happen of problem of burrs and the chip breakage of surface and verge.

     2. For the edge with all kinds of honing and polishing treatment, they can apply to any kind of cutting condition and have obvious result on roughing, interrupted and control the happen of tiny chip breakage.

     3. There will have better tool life to use CBN coated inserts machining hardened steel.

     4. We can choose CBN inserts with grooving type for the condition of weak system rigidity and requirement integrity of work piece surface.

       
         With the development of optimization between CBN material and binder,  the development of synthetic control technology, and the actual demand of Chinese processing industry, the application of CBN inserts have already been changed greatly.