The program of treatment numerical control of chain wheel

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The signal diagram of the chain wheel outline of the automatic staircase that if graph A place is shown,produces for some enterprise. Chain wheel is aged by 24 all cloth, the local enlarge that shows by graph B place is seen in the graph, each tooth profile of chain wheel connects by the inflection point of radius of 6 different curvature and become. Craft analysis: Chain wheel is divided into 24 tine all cloth, criterion the included angle between two tine is 15 ° , terminus of a dentiform is next dentiform start. In be machined actually, after every mill ages, fasten coordinate the point of view with rotate proper, continue again milling, reduced the workload of process designing. To make the program simplifies, use opposite coordinate to dictate G91 will rotate coordinate is, can omit each tine calls a subprogram write. When process designing, it is in order to process a tooth form fiducial, the terminus of machine program of a tooth form regards below one tooth form as the start of treatment, circulate 24 times so, the treatment of the chain wheel that finish. The hard alloy of use ф 10mm establishs milling cutter to undertake machining. Data computation: From the graph B can see, using manual computation node is not actual, can use AutoCAD scale. Deflection statement is used in AutoCAD, chain wheel 5mm(of value of radius of a cutting tool need not use the contour line deflection of a tine of upper part so cutting tool radius compensates) , get is like a graph 19 in double dot underlines place to show a figure. Tag each nodical coordinate and radius of each paragraphs of circular arc, if pursue,19 are shown. Graph computation of node of 19 chain wheel machines coordinate origin: XX: The Y of the centre of a circle of chain wheel: The Z of the centre of a circle of chain wheel: Next exterior machine program of chain wheel: (slightly) CNC Milling