Improved hand wheel hexagonal hole machining tool

手轮六方孔加工刀具的概述         ">Overview of a hand wheel hexagonal hole machining tool
        Higher gate and globe valves hexagonal holes or square holes on the hand wheel geometry accuracy, and stem nut or handwheel stem with a gap of 011 ~ 013mm. Since there is no slip between the hand wheel and fitting , when you open and close the valve flexible and fast. Processing handwheel hexagonal holes in bed with pull broaches broaching, broach the drawback is the high cost, high broaching processing costs . Broaching suitable for mass production , if the hexagonal hole size changes after long broaches required design and manufacturing cycle . For broaching shortcomings , instead of using a knife to push broaches, cutting processing instead of using push broaching , or by simple mechanical cylinder instead of broaching .
        Improvements hand wheel hexagonal hole machining tool
        According hand tightly round six holes with the characteristics required by push processing instead of cutting broaching . The material of the hand wheel KTH330-08, the annealing process easier . In order to ensure the strength and stability of the push knife , push the knife is one-third the length of the original broach , let flute straight tooth back rake angle of 10b, this process is good. The tool is made of W6Cr5Mo4V2, hardness HRC58 ~ 62. Cutting oil cutting fluid is added , to improve tool life and reduce the processing of the workpiece and cut the tearing conditions .
        3 hand- round six -hole machining tool to improve efficiency
        Broaching pushed into the cut , you can reduce tool costs , pushing the knife is only one sixth the cost of pulling a knife , and cut the same quality of products and broaching . Push cut can be performed on or with a simple cylinder reciprocating linear motion of machinery, can reduce processing costs . When push knife manufacturing simple time-saving , easy processing of any size hexagonal holes or square holes.