形位精度等级和加工面加工精度等级、方案

1、附录二形位精度公差值公差等级主参数 L/mm12公差等级主参数 L/mm123456789101112公差值/m100.20.40.81.223581220306010160.250.511.52.546101525408016250.30.61.223581220305010025400.40.81.52.546101525406012040630.5123581220305080150631000.61.22.54610152540601002001001600.81.53581220305080120250160250124610152540601001503002504001.22.5

2、5812203050801202004004006301.536101525406010015025050063010002481220305080120200300600100016002.55101525406010015025040080016002500361220305080120200300500100025004000481525406010015025040060012004000630051020305080120200300500800150063001000061225406010015025040060010002022附表2-2圆度、圆柱度公差值公差等级公差等级主参数

3、 L/mm0123456789101112公差值/m30.10.20.30.50.81.22346101425360.10.20.40.611.52.54581218306100.120.250.40.611.52.546915223610180.150.250.50.81.223571118274318300.20.30.611.52.54681321335230500.250.40.611.52.547111625396250800.30.50.81.223581319304674801200.40.611.52.5461015223554871201800.611.223.5581218

4、2540631001802500.81.2234.571014202946721152503151.01.62.54681216233252811303154001.2235791318253657891404005001.52.546810152027406397155公差等级附表2-3平行度、垂直度、倾斜度公差值公差等级主参数 L/mm123456789101112公差值/m100.40.81.5358122030508012010160.51246101525406010015016250.61.22.558122030508012020025400.81.536101525406010

5、0150250406312481220305080120200300631001.22.5510152540601001502504001001601.5361220305080120200300500160250248152540601001502504006002504002.551020305080120200300500800400630361225406010015025040060010006301000481530508012020030050080012001000160051020406010015025040060010001500160025006122550801202

6、003005008001200202225004000815306010015025040060010001500250040006300102040801202003005008001200202230006300100001225501001502504006001000150025004000附表2-4同轴度、对称度、圆跳动和全跳动公差值公差等级公差等级主参数 L/mm123456789101112公差值/m10.40.611.52.5461015254060130.40.611.52.54610204060120360.50.81.22358122550801506100.611.52

7、.5461015306010020010180.81.2235812204080120250183011.52.5461015255010015030030501.2235812203060120200400501201.52.54610152540801502505001202502358122030501002003006002505002.546101525406012025040080050080035812203050801503005001000800125046101525406010020040060012001250202258122030508012025050080015

8、002022315061015254060100150300600100020223150500081220305080120200400800120025005000800010152540601001502505001000150030008000100001220305080120200300600120020224000附录三机械加工的经济精度附表3-1各种加工方法可能到达的公差等级加工方法公差等级 IT01012345678910 11 12 13 14 15 16研磨珩磨内外圆磨削平面磨削金刚石车削金刚石镗削拉削铰孔车削镗削铣削刨削、插削钻孔滚压、挤压冲压附表3-2外圆柱面加工的经

9、济精度车削车削磨削/mm粗车次加工精车一次加工研磨粗磨精磨滚压131212111097976510976铸孔或冲孔后铸孔或冲孔后精扩IT/m13120120604020920964402096361601608048251225128548251286102002001005830153015106583015101018240240120703518351812870351812183028028014084452145211498445211430506203403401701005025502517111005025175080740400400200120603060302013120

10、6030208012087046046023014070357035231514070352312018010005305302601608040804027181608040271802601150600600300185804790473020185904730260360135068068034021510054100543522215100543536050015507607603802501206212062402525012062403-3孔加工的经济精度钻及扩孔钻扩孔铰孔寸/mm无钻模有钻模粗扩粗扩或钻孔后一次半精铰扩孔精铰细铰IT/m1211121112121110111098

11、761360603680808048251813861010010010058302216910182401202401207012070352719111830280140280140841408445382330503403403403401701001701005039275080460400400200120200120604630801204604602301402801407054351201802601608063401802603001859073452603603402151008450360500拉孔镗孔磨孔研直径根本尺寸/mm粗拉孔后或钻孔后精拉孔粗半精精细粗精磨9871

12、211109876987613366101018352719240120703527191135271911183045332328014084453323134533231330505039273401701005039271550392715508060463040020012060463018604630188012070543546023014070543521705435211201808063405302601608063408063402418026060030018590734590734527260360680340215100845010084503036050076038

13、02501209560120956035刨削和圆柱铣刀及套式面铣刀铣削拉削磨削根本尺寸/mm刨削和圆柱铣刀及套式面铣刀铣削拉削磨削根本尺寸/mm粗半精车加工精细粗拉铸外表精拉一次加工粗 精细 IT/m13 1211 12111097611 109769797651097101843024012024012070351812 35183518128703518183052028014028014084452114140844521144521452114984452130506203401703401701005025171701005025175025502517111005025508070

14、04002022002001206030202001206030206030603020131206030801208704602304602301407035232301407035237035703523151407035120180100053026053026016080402726016080402780408040271816080401802601150600300600300185904730300185904730904790473020185904726036013506803406803402151005435 100541005435222151005436050038

15、07603802501206240 1206212062402525012062表内资料适用于尺寸1m，构造刚性好的零件加工：用光滑的外表作为定位基准和测量基准，套式面铣刀铣削的加工精度在一样的条件下大体上比圆柱铣刀铣削高一级。细铣仅用于套式面铣刀铣削。附表3-5端面加工的经济精度单位：mm直径直径加工方法5050120120260260500车削粗0.150.200.25040精0.070.100.130.20一般0.030.040.050.07磨削周密0.020.0250.030.0353-5平面度和直线度的经济精度加工方法等级IT加工方法IT研磨、周密磨、刮研12粗磨、铣、刨、拉、车78

16、研磨、精磨、刮34铣、刨、车、插910磨、刮、精车56各种粗加工1112附表3-6平行度的经济精度加工方法研磨、珩磨、刮、周密磨磨、坐标镗、周密铣、周密刨123456加工方法铣、磨、刨、拉、镗、车 各种粗加工IT789101112附表3-7端面圆跳动和垂直度的经济精度加工方法研磨、精磨、精刮、周密车磨、刮、珩、精刨、精铣、精镗IT123456加工方法各种粗加工IT789101112加工方法加工加工方法加工磨、珩磨磨、精车，一次装夹下的内圆磨及镗IT12加工方法粗磨、车、镗、拉、镗IT7834车、镗、钻910各种粗加工111256附表3-9各种加工方法能到达的外表粗糙度Ra/mRa/mRa/m自

17、动气割、带锯或圆盘锯割断5012.515mm6.33.2钻车5012.515mm256.3切断铣2512.5粗有表皮12.56.3扩孔砂轮3.21.6精6.31.6粗车12.53.2锪倒角孔的3.21.6金属6.33.2带导向的锪平面6.33.2半精车非金属3.21.6粗镗12.56.3车削外圆金属3.20.8金属6.33.2精车半精镗非金属1.60.4非金属6.31.6或金刚石车金属非金属0.30.20.40.1镗孔精镗金属非金属3.20.81.60.4粗车12.56.3周密或金属0.80.2金属6.33.2金刚石镗非金属0.40.2外表粗糙度加工方法外表粗糙度切槽半精车精车周密车高速金属

18、金属非金属6.31.66.31.66.31.60.80.40.80.212.56.33.2车削黄铜、青铜0.2车削黄铜、青铜0.20.1粗12.53.2精0.80.1精3.20.8超精加工周密0.10.05周密0.80.4镜面加工两次加工0.025粗12.53.2抛光精0.80.1精3.20.4周密0.10.025高速镗半精铰钢一次铰黄铜铸铁精铰铰孔二次铰钢、轻合金钢周密铰轻合金0.80.26.33.26.31.63.20.81.60.80.80.40.80.20.80.4铣削高速铣削周密粗0.80.21.60.8砂袋抛光砂布抛光0.20.11.60.1精0.40.2电抛光1.60.012粗1

19、2.53.2板牙、丝锥、自开式3.20.8精3.21.6板牙头刨削周密0.80.2切削车刀或梳刀车、铣6.30.8槽的外表6.33.2螺纹加工磨0.80.2粗2512.5研磨0.80.05插削精6.31.6搓丝模1.60.8滚轧拉削精1.60.4滚丝模1.60.2周密0.20.1粗滚3.21.6精0.80.2精滚1.60.8推削周密0.40.025精插1.60.8半精一次加工6.30.8精刨3.20.8切削精周密、超周密磨削0.050.025精周密、超周密磨削0.050.025磨0.80.1镜面磨削0.05研0.40.2精周密0.80.40.20.05滚轧热轧冷轧0.80.40.20.1精0.

20、80.2齿轮及花拉3.21.6密0.20.1键加工剃0.80.2珩磨粗一次加工珩磨粗一次加工0.80.2刮粗3.20.8精、周密0.20.025精0.40.05研磨粗精0.40.20.20.05滚压加工钳工锉削0.40.0512.50.8周密0.05砂轮清洗506.3附录四加工面的机加工方案附表4-1外圆外表加工方案1粗车11125012.52-半精车8106.33.23-半精车-精车671.60.84-半精车-精车-滚压抛光560.20.0255-半精车-磨削670.80.46-半精车-粗磨-精磨560.40.17半精车-粗磨-精磨-超精加工或轮式超精磨560.10.012序号加工方案经济加工公差等级序号加工方案经济加工公差等级IT加工外表适用范围适于淬火钢以外的各种金属主要适于淬火钢，也可工非铁金属8-半精车-精车-金刚石车560.40.025主要用于要求较高非铁金属9-半精车-粗磨-精磨-超精磨或镜面磨50.025极高精度的钢或铸铁的外圆加工10粗车-半精车-粗磨-精磨-研磨5级以上0.1序号加工方案经济加工公差等级IT加工外表粗糙度Ra/m适用范围加工未淬火钢及铸铁的实心毛坯，也可用于加工非铁金属但径20mm加工未