自攻牙開孔與組裝實務(wù)

自攻牙開孔與組裝實務(wù)報告者:吳政霖浜中松琴工業(yè)有限公司1/31/20231壹、常用螺絲的種類貳、各種螺絲的用途參、常用螺絲搭配被鎖物開孔規(guī)範(fàn)肆、螺絲適當(dāng)鎖付扭力伍、螺絲扭力曲線圖1/31/20232壹、常用螺絲的種類螺絲大致可區(qū)分為2大類：1.機(jī)械牙:可區(qū)分公制及英制。2.自攻螺絲:三角自攻(TAPTITE)、鐵板螺絲(1~4種)、木螺絲等。而公司與德國EJOT合作研發(fā)的螺絲有PT牙、DELTAPT等螺絲。1/31/20233貳、各種螺絲的用途1/31/20234機(jī)械牙螺絲應(yīng)用範(fàn)圍：用於被鎖件已有陰螺紋上。

1/31/20235鐵板牙螺絲應(yīng)用範(fàn)圍：鐵板螺絲在使用時兼具攻牙及鎖緊兩種功能，多使用在薄鐵板(不鑽孔)及厚鐵板(5mm以下)先鑽小孔或沖孔後不必攻牙，直接鎖入，不需彈簧墊子、螺母等配件，並且不容易鬆脫。

1/31/20236三角自攻牙應(yīng)用範(fàn)圍：用途在工作物(被鎖物)上先鑽適當(dāng)之小孔(不必絞牙)，螺絲本身攻牙兼鎖入工作，且於鎖入時沒有切削鐵粉，鎖緊後連結(jié)力強(qiáng)，不易鬆動脫落，不需附帶墊圈螺帽等配件。常用的三角自攻牙如下：STYPE：適用於鎖付鐵板的被鎖件。BTYPE：鐵板及塑膠類皆可使用。PTYPE：使用在可塑性的塑膠類。1/31/20237PT牙應(yīng)用範(fàn)圍：適用於可塑性塑膠類上，且於鎖入時無須較大的扭力(與三角自攻牙比較)，即可將螺絲鎖付至定位，且重複試鎖性良好。

1/31/20238DeltaPT牙應(yīng)用範(fàn)圍：其使用上及功能性與PT牙相同，為PT牙之改良版，破壞扭力強(qiáng)度較PT牙高。

1/31/20239DeltaPT牙1/31/202310參、常用螺絲搭配被鎖物開孔規(guī)範(fàn)1/31/202311外徑Pitch牙數(shù)外徑(d)脫拔部長度(y)破壞扭力抗張力底孔徑(材質(zhì)/鐵)厚度最小最大最小最大最小最小0.801.001.201.602.002.603.204.001.40.30851.311.37

1.60.35731.501.56

1.70.35731.601.66

20.40641.881.961.401.804.41401.701.701.701.701.75

2.30.40642.182.261.401.807.72002.002.002.002.002.00

2.50.45562.382.461.502.109.72302.202.202.202.202.202.25

2.60.45562.482.561.502.10122502.302.302.302.302.302.352.35

30.50512.872.951.702.30183402.652.702.702.702.752.752.802.803.50.60423.363.442.102.70284603.103.103.103.153.153.203.203.2040.70363.853.932.403.20425903.603.603.653.653.703.703.703.7050.80324.844.922.803.6088960

4.604.604.654.654.654.704.7061.00255.805.903.504.501471350

5.405.505.505.505.505.555.6081.25207.787.884.305.703692470

7.407.407.407.407.507.507.50三角自攻牙（SType)1/31/202312外徑Pitch牙數(shù)外徑(d)脫拔部長度(y)破壞扭力抗張力底孔徑(材質(zhì)/鐵)厚度塑膠(ABS,PC)最小最大最小最大最小最小0.60.81.01.21.62.02.63.22D以下2D以上1.40.4556.41.311.37

1.60.5050.81.501.56

1.70.5050.81.601.66

20.64401.881.96

20.635401.881.961.201.604.11201.551.601.601.601.651.651.70

1.701.752.30.793322.182.261.502.006.11501.901.901.901.951.951.952.002.301.901.952.60.907282.472.551.802.309.92102.152.152.202.202.202.252.252.602.202.2531.058242.852.952.102.70152802.652.652.652.702.702.702.702.752.502.603.51.270203.343.462.503.20253903.053.053.053.103.103.103.153.152.993.1041.411183.813.912.803.60354803.603.603.603.803.653.653.653.653.433.5551.587164.784.903.104.0066730

4.504.504.504.554.554.604.604.364.4561.814145.725.883.604.601171080

5.305.305.405.405.505.505.285.4082.116127.657.854.205.302831950

7.307.307.307.307.407.407.187.30三角自攻牙（ＢType)1/31/202313外徑Pitch牙數(shù)外徑(d)脫拔部長度(y)破壞扭力抗張力塑膠(ABS,PC)最小最大最小最大最小最小2D以下2D以上1.40.50511.341.40

1.60.64401.541.60

1.70.64401.631.69

20.79321.942.04

20.793321.942.041.602.003.51101.701.752.30.907282.252.351.802.304.41702.002.052.61.058242.542.642.002.509.01902.202.2531.270202.933.052.603.30142602.502.603.51.411183.453.572.803.50233403.023.1041.587163.904.023.204.00334503.443.5551.814144.895.033.604.50586604.374.4562.116125.866.044.205.30908605.265.3582.540107.938.055.106.3021115707.167.25三角自攻牙（PType)1/31/202314MaterialBossI.d.Bosso.d.lnsertiondepthdiABS0.80xd2.00xd2.00xdABS/PCBlend0.80xd2.00xd2.00xdASA0.78xd2.00xd2.00xdPA4.60.73xd1.85xd1.80xdPA4.6-GF300.78xd1.85xd1.80xdPA60.75xd1.85xd1.70xdPA6-GF300.80xd2.00xd1.90xdPA6.60.75xd1.85xd1.70xdPA6.6-GF300.82xd2.00xd1.80xdPBT0.75xd1.85xd1.70xdPBT-GF300.80xd1.80xd1.70xdPC0.85xd2.50xd2.20xd*TnP-TestPC-GF300.85xd2.20xd2.00xd*TnP-TestLDPE0.70xd2.00xd2.00xdHDPE0.75xd1.80xd1.80xdPET0.75xd1.85xd1.70xdPET-GF300.80xd1.80xd1.70xdPMMA0.85xd2.00xd2.00xdPOM0.75xd1.95xd2.00xdPP0.70xd2.00xd2.00xdPP-TF200.72xd2.00xd2.00xdPPO0.85xd2.50xd2.20xd*TnP-TestPS0.80xd2.00xd2.00xdPVC(hard)0.80xd2.00xd2.00xdSAN0.77xd2.00xd1.90xdPPSContactH.N.S.APPLITECPT牙1/31/202315

1.機(jī)械牙肆、螺絲適當(dāng)鎖付扭力1/31/202316自攻牙影響自攻牙螺絲的扭力有：肆、螺絲適當(dāng)鎖付扭力1.被鎖物的材質(zhì)(硬度)。即使相同材質(zhì)其成分、硬度也有不同2.被鎖件的孔徑大小3.被鎖件的吃牙數(shù)4.螺絲的表面粗糙度(表面鍍層)1/31/202317伍、螺絲扭力曲線圖1/31/202318RelationshipbetweentorqueandinstallationdepthinstallationdepthTorque組裝扭力剝脫扭力磨擦力陰螺紋形成阻力1231231ThreadformingTforming2Screwheadincontactwithout