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1、擠壓絲錐J41中華人民共和國機(jī)械行業(yè)標(biāo)準(zhǔn)JB/T7428-94擠壓絲錐1994--批準(zhǔn)1995-07-01實施中華人民共和國機(jī)械工業(yè)部發(fā)布中華人民共和國機(jī)械行業(yè)標(biāo)準(zhǔn)擠壓絲錐JB/T7428-941主題內(nèi)容與適用范圍本標(biāo)準(zhǔn)規(guī)定了普通螺紋擠壓絲錐(以下簡稱絲錐)的型式和基本尺寸,技術(shù)要求,性能試驗和標(biāo)志包裝的基本要求.本標(biāo)準(zhǔn)適用于在有色金屬及低強(qiáng)度黑色金屬零件上按GB/T192～193,GB/T196～197加工公稱直徑2～27mm的普通螺紋的絲錐.本標(biāo)準(zhǔn)的絲錐螺紋公差帶分為H1,H2,H3,H4四種,H1,H2,H3通常是磨牙絲錐,H4通常是非磨牙絲錐.2引用標(biāo)準(zhǔn)GB/T968絲錐螺紋公差
2、3絲錐型式和基本尺寸3.1粗柄絲錐型式尺寸按圖1和表1,表2規(guī)定.圖1表1粗柄粗牙絲錐尺寸mm代號公稱直徑螺距d1lLl1方頭dPal2M22.00.402.58.041.05.52.004M2.22.20.452.89.544.56.02.245M2.52.50.452.89.544.56.02.245M33.00.503.1514.548.03.52.505M3.53.5(0.60)3.5516.550.03.52.805續(xù)表1mm機(jī)械工業(yè)部1994--批準(zhǔn)1995-07-01實施1JB/T7428-94代號公稱直徑螺距d1lLl1方頭dPal2M44.00.704.0017.053
3、.0—3.156M4.54.5(0.75)4.5017.053.0—3.556表2粗柄細(xì)牙絲錐尺寸代號公稱直徑螺距d1lLl1方頭dPal2M2×0.252.00.252.58.041.05.52.004M2.2×0.252.20.252.89.544.56.02.245M2.5×0.352.50.352.89.544.56.02.245M3×0.353.00.353.1514.548.03.52.505M3.5×0.353.50.353.5516.550.03.52.805M4×0.54.00.504.0017.053.0—3.156M4.5×0.54.50.504.5017.053.
4、0—3.556mm3.2粗柄帶頸絲錐型式尺寸按圖2和表3,表4規(guī)定.圖2表3粗柄帶頸絲錐粗牙尺寸代號公稱直徑螺距d1lLd2l1方頭dPminal2M55.00.805.0016.0583.559.04.007M66.01.006.3019664.511.05.008M7(7.0)1.007.1019665.311.05.608M88.01.258.0022.0726.013.06.309M9(9.0)1.259.0022.0727.114.07.1010M1010.01.5010.024.0807.515.08.0011mm2JB/T7428-94表4粗柄帶頸細(xì)牙絲錐尺寸mm代號公稱直
5、徑螺距d1lLd2l1方頭dPminal2M5×0.55.00.505.0016.0583.559.04.007M5.5×0.55.50.505.6017.0624.009.04.507M6×0.56.00.506.319.0664.511.05.008M6×0.756.00.756.319.0664.511.05.008M7×0.75(7.0)0.757.1019.0665.3011.05.608M8×0.58.00.508.0019.0666.0013.06.309M8×0.758.00.758.0019.0696.0013.06.309M8×18.01.008.0019.0696.
6、0013.06.309M9×0.75(9.0)0.759.0019.0667.1014.07.1010M9×1(9.0)1.009.0019.0697.1014.07.1010M10×0.7510.00.7510.020.0737.5015.08.0011M10×110.01.0010.020.0767.5015.08.0011M10×1.2510.01.2510.020.0767.5015.08.0011注:①括號內(nèi)的尺寸應(yīng)盡可能不采用.②表3和表4中的d2,l1為空刀槽尺寸.允許無空刀槽,無空刀槽時螺紋長度應(yīng)為l+l1/2.3.3細(xì)柄絲錐型式尺寸按圖3和表5,表6規(guī)定.圖3表5細(xì)柄粗
7、牙絲錐尺寸代號公稱直徑螺距d1lL方頭dPal2M55.00.804.0016583.156M66.01.004.5019663.556M7(7.0)1.005.6019664.507M88.01.256.3022725.008mm3JB/T7428-94續(xù)表5mm代號公稱直徑螺距d1lL方頭dPal2M9(9.0)1.257.1022725.608M1010.01.508.0024806.309M11(11.0)1.508.002
