鍵和花鍵的公差與檢測(cè)(參考版)
2025-01-21 20:47本頁面
【正文】 即： Square splines’ size tolerance zone codes and fit codes are labeled according to the orders set by spline specifications. ? 內(nèi)花鍵： 6 28H6 32H10 7H9 Inner splines ? 外花鍵： 6 28g5 32a11 7f7 External splines ? 花鍵副： Spline pairs 79111056286 fHaHgH ???。 Because minor diameter is the centering dimension of spline couplings and must guarantee its fit the limit sizes of inner and external splines’ minor diameters should abide by enveloping principles that the minor diameters of spline holes and shafts are not supposed to overstep maximum material boundary. ★ 為保證裝配性和鍵側(cè)受力均勻 ， 規(guī)定 花鍵的位置度公差應(yīng)遵守最大實(shí)體原則 ， 即不能夠超過實(shí)效邊界 。 Square splines for precision transmission ? 為了減少加工和檢驗(yàn)內(nèi)花鍵用的花鍵拉刀和花鍵量規(guī)的規(guī)格和數(shù)量，采用 基孔制 配合。 According to connection usage requirements:It is divided into three kinds of fit types as slippage, tight slide and fixed. ? 每種情況下花鍵配合的公差等級(jí)都不相同。 Size precision:The main requirements of spline couplings are to guarantee the coaxialites of internal and external splines as well as the uniform contacts of keys’ side faces and keyways’ side faces to guarantee transmitting certain torques. National standards provide adopting small diameter fixed center which regards small diameter’s faying face as centering surface and provides higher other two sizes provide lower precisions. 尺寸精度設(shè)計(jì)（ 2）Size precision design(2) ? 矩形花鍵的分類： The classifications of rectangle splines ? 按使用要求分 ：分為一般使用與精密傳動(dòng)兩種。 Basic sizes:Minor diameter d, major diameter D and keyway width B ? 尺寸精度： 花鍵聯(lián)結(jié)的主要要求是保證內(nèi)、外花鍵的同軸度，以及鍵側(cè)面與鍵槽側(cè)面接觸均勻，保證傳遞一定的轉(zhuǎn)矩。 A 0 標(biāo)注輪轂深 d+t2及公差 Label hub depth d+t2 and tolerances 標(biāo)注槽寬 b及公差 Label groove width b and tolerances 標(biāo)注對(duì)稱度公差 Label symmetry tolerances 標(biāo)注表面粗糙度 Label surface roughnesses 四、花鍵配合的精度設(shè)計(jì) Precision designs of spline fits 種類 Types Rectangular key Involute spline Serration spline 特點(diǎn) Features 1. 可靠，強(qiáng)度高，可以傳遞較大的轉(zhuǎn)矩。 形位精度設(shè)計(jì) Shape and po
教學(xué)課件相關(guān)推薦
鄂ICP備17016276號(hào)-1