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Interchangeability and Measurement Technology—Surface Roughness Selection and Marking Method

2022-08-11 03:32:00 【Green hedge bamboo maple】

（）1.The meaning of the surface roughness

 

 

 

 

 

 

 

 

 

 

 

 2.The selection of the surface roughness way

 

RaSuitable for general surface,Special rough or special smooth surface,选择Rz

 

 

 The selecting principle of parameter values

 （1）Meets the requirement of,值越大越好,Rmr（c）除外,Try to choose the smaller

（2）类比法

（a）In the same parts,Work surface is smaller than non-working surface value

（b）Friction surface than on the surface of the friction is small

（c）Cooperate with stable,Small size tolerance of,Good sealing conditions such as,值比较小

（d）The same tolerance grade,Hole is greater than axis value,Small size is smaller than the value of the large size

（e）Small clearance fit or on interference fit,Should choose small value

 

 

 

 

 

 The surface roughness of tagging method

 

 

 

 

 

 

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