02切削加工工艺守则总则附件Word格式文档下载.docx

1、5-2000 普通尺寸偏差 Ordinary dimensional deviation11-2000 切削圆角半径与极限偏差 Fillet radiuss limit deviation12-2000 切削倒角极限偏差 Chamfers limit deviation14-2000 钻孔直径的一般尺寸极限偏差 Diameters limit deviation of drilling hole16-2000 螺纹长度的一般尺寸极限偏差 Limit deviation of threads length17-2000 螺孔和钻孔中心距的一般尺寸极限偏差 Limit deviation of t

2、he central distance between screw and drilling hole.141-2000 钻孔深度一般尺寸极限偏差 Limit deviation of drilling holes depthGB1184 未注键槽的对称度 Symmetry of unsigned key bed GB145 中心孔 Center hole 一般要求 General requirements3.1 所有经过切削加工的零件必须符合产品的图样、工艺规程和本标准的要求。 All the parts that are cutting machined should meet the r

3、equirements of drawings, technical regulations and this standard.3.2 零件的加工表面不允许有锈蚀和影响性能、寿命和外观的磕、碰、划伤等缺陷。 Parts finished surface should have no rust and bugs that have influence on its capability, longevity and appearance, such as knocking, bumping, scratches etc.3.3 除有特殊要求外，加工后的零件不允许有尖棱、尖角和毛刺。 The p

4、art finished should have no cusped edge, cock and burr except for special requirements.3.3.1 零件图样中未注明倒角时，应按图和表1中的规定进行倒角。If the chamfer is not marked in the drawing, it should be cut according to Fig.1 and Table 1.图Fig.1表 单位：Table 1 Unit: mmD（d）55303010010025025050050010001000C0.20.5123453.3.2 零件图样中未

5、注明倒圆尺寸、又无清根要求时，应按图和表的规定倒圆。 If fillets dimension is not marked and the cleaning is not required in the drawing, the fillet should be cut according to Fig.2 and Table 2.图Fig.2表 单位：Table 2 Unit:D-d44121230308080140140200200D3101030802602606306301000R0.481220注： D值用于盲孔和外端面倒圆。Notes: D is used to the fille

6、ting of blind hole and outside face. 非圆柱面的倒角可参考此表。 Chamfering of non-cylindrical surfaces: refer to this table.3.4 滚压精加工的表面，滚压后不得有脱皮现象。 Peeling off phenomenon should not exist after rolling on finished surface.3.5 经过热处理的工件精加工时不得产生烧伤、裂纹等缺陷。After finishing machining, the workpiece should have no burr,

7、 crack etc. caused by thermal treatment. 3.6 精加工后配合面、摩擦面和定位面等工作表面不允许在其上打印标记。Dont mark on the work surfaces such as matching surface, friction surface, locating surface etc.4 未注倒角尺寸与偏差按Q/STB 12.520.12规定执行。（表、图） Chamfers dimension and deviation that are not marked should perform Q/STB 12.520.12.（Table

8、 3, Fig.3） 倒角尺寸与偏差 Q/STB 12.520.12 Chamfers dimension and deviation（切削加工）Cutting machining 适用范围：用切削加工（切削和磨削）制作的机械零件在内的倒角之公称尺寸和一般尺寸偏差，但在下述情况下，本标准不适用：Application range: nominal dimension and deviation of 45chamfer within 12mm of mechanical parts that are made by cutting machining （cutting and grinding

9、）, but this standard is not applicable to following conditions:（1） 用另外的标准规定了倒角尺寸和偏差时。The chamfers dimension and deviation are ruled in other standards.（2） 从技术要求来看，有必要使用另外标准的倒角尺寸和偏差时。When its necessary for the chamfers dimension and deviation to use orther standards looking from the technical require

10、ments.公称尺寸和一般尺寸偏差根据下表：Nominal dimension and general dimensional deviation is according to the following table: 图3Fig.3表3 单位：mmTable 3 Unit:公称尺寸Nominal dimension610一般尺寸偏差General dimensional deviation 注：公称尺寸小于0.5时必须有倒角Note: Chamfer must be cut while the nominal dimension is less than 0.5 5 未注圆角半径尺寸偏差按

11、Q/STB 12.520.11规定执行（图、图、表） The fillets unmarked radiuss deviation performs Q/STB 12.520.11 （Fig.4, Fig.5, Table 4） 圆角半径 Q/STB 12.520.11 Fillet radius切削加工 （ Cutting machining） 5.1适用范围：用切削加工（切削和磨削）制作的机械零件的角和边缘圆角半径的标准尺寸和一般尺寸偏差，但是在下述情况下，本标准不适用： standard dimension and general dimensional deviation of ang

12、le and fringe fillet radius of the mechanical parts that be made by cutting machining （cutting and grinding）, but this standard is not applicable to following conditions:（1） 用另外的标准规定了圆角半径和尺寸偏差时。The fillets radius and dimensional deviation are ruled in other standards.（2） 从技术要求来看，有必要使用另外标准的圆角半径和尺寸偏差时

13、。When its necessary for the fillets radius and dimensional deviation to use orther standards looking from the technical requirements.5.2公称尺寸和一般偏差根据下表 Nominal dimension and the general deviation is according to the following table: （）（）（） 图 Fig.4 除特别需要外才要倒角 Chamfer should not be cut except special re

14、quirement 表 单位：Table 4 Unit:标准尺寸Standard dimension参考reference滚动轴承的相应倒角Rolling bearings relevant chamfer相应最小倒角尺寸The relevant minimum dimension of the chamfer.注：必须有圆角Note: Fillet must be cut参考：（）本标准限定圆角的半径，是为谋求刀具的单纯化而制订的Reference: （）The limitation of the fillet radius in this standard is to keep cutte

15、rs simplicity.（）实际制品的圆角半径，虽然没有限定几何学的圆角半径，但在制订本标准时，圆角尺寸偏差的定义包括了弯曲、公差和中心偏差。（可参考图的部分） Although the actual products fillet radius does not limit geometric fillet radius, the definition of fillets dimensional deviation includes flection, tolerance and central deviation when provideing this standard. （You

16、 can consult part1 of Fig.5）（3） 在圆角半径和相应的倒角尺寸有可能相互干涉的时候，应和图的那样标注作为倒角尺寸，必须避免相互混淆。While a fillet radius maybe interfere with corresponded chamfer dimension, the chamfer dimension should be marked like 2 of Fig.5 to avoid mutual confusing. （）（）R最大: Maximal R R最小: Minimum R La 图 Fig.56 未注角度的一般偏差按Q/STB 1

17、2.520.2执行（表5） The unmarked angles general deviation performs Q/STB 12.520.2 （Table 5） 角度的一般偏差 Q/STB 12.520.2 Angles general deviation 6.1 适用范围：角度的一般偏差根据本标准，但在下列情况时，本标准不适用： General deviation of the angle should be according to this standard, but this standard is not applicable to the following condit

18、ions:（1） 在其他的规则和标准中规定了角度偏差时； The angular deviation is ruled in other rules or standards.（2） 在客户已指定了角度偏差时； Customer has already specified the angular deviation.（3） 有特殊的技术要求时；With special technical requirements表5 单位：Table 5 Unit:公称尺寸角度偏差Angles deviation 注：所谓公称尺寸是指必须垂直的部分的最大尺寸 Note : Nominal dimension

19、means the largest size of the vertical section. 未注一般尺寸偏差按Q/STB 12.520.5规定执行（表） The unmarked general dimensional deviation performs Q/STB 12.520.5 （Table 6）一般尺寸偏差（切削加工）General dimensional deviation （ cutting machining）Q/STB 12.520.57.1 适用范围：没有记入尺寸偏差的以下的切削尺寸的加工偏差，但是在下述情况下，不适合于本标准： Application range: M

20、achining deviation of machined dimension below 2500mm and that is not registered in dimensional deviation, but this standard is not suitable for the following conditions. （1） 钻孔直径和钻孔深度； Drilling holes diameter and depth;（2） 倒角尺寸及倒圆的半径；Chamfers dimension and fillet radius;（）磨削退刀槽； Recesss grinding;（）

21、切削螺钉的有效长度； Cut bolts effective length;（）指示花键铣刀的中心位置尺寸； The center site dimension of spline cutter;（）参数尺寸。 Parameter dimension7.2 尺寸偏差，根据表The dimensional deviation is according to table 6表6 单位：Table 6 Unit:公称尺寸范围The range of nominal dimension尺寸偏差Dimensional deviation备注Remark中级尺寸偏差intermediate dimensi

22、onal deviation .注：精密零件中级尺寸偏差执行 Note: Precision parts perform the intermediate dimensional deviation prescribed.8 钻孔和螺孔Drilling and tapping8.1未注钻孔直径的偏差按Q/STB 12.520.14规定执行（表7） Deviation of unmarked drilling holes diameter performs Q/STB 12.520.14 （Table 7）钻 孔 直 径 的 偏 差Diameter deviation of drilling h

23、ole Q/STB 12.520.148.1.1 适用范围: 3559mm钻孔直径的偏差 Diameter deviation of drilling hole in the scope of 3559mm8.1.2 偏差,根据表7Deviation, according to table 7表7 单位：Table 7 Unit:钻 孔 直 径Diameter of drilling hole偏 差Deviation参 考Reference普 通 级Common grade精 密 级Fine gradeH12661010181830308.1.3 图样标注如下: It should be marked in the drawing as following:（1） 普通级偏差，图样上不作标注。 Common grade deviation should not be marked in the drawing.（2） 精密级偏差，图样上应标注。Precision grade deviation should be marked in the drawing.（3） H12的偏差，有必要作H12的加工时，在图样上应标注。When H12 deviat