机械图纸技术要求大全（Mechanical drawings technical requirements）.docVIP

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机械图纸技术要求大全（Mechanical drawings technical requirements）.doc

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机械图纸技术要求大全（Mechanical drawings technical requirements）

机械图纸技术要求大全（Mechanical drawings technical requirements） Mechanical drawings technical requirements 1. parts remove oxide skin. 2. parts processing surface should not have scratches, scratches and other parts of the damaged surface defects. 3. deburring edges. 4. by quenching and tempering treatment, HRC50 ~ 55. 5. parts are subjected to high frequency quenching, tempering at 350~370 DEG C, HRC40 ~ 45. 6. carburizing depth 0.3mm. 7. high temperature aging treatment. 8. no injection form tolerances shall comply with the requirements of GB1184-80. 9. no injection length dimension allowable deviation + 0.5mm. 10. the tolerance zone of casting is symmetrical to the basic dimension of rough casting. 11. no fillet radius R5. 12. no injection chamfer is 2 x 45 degrees. 13. acute angle blunt. 14. the seals must be soaked before they are assembled. 15. rolling bearings are allowed to be heated by oil heating. The temperature of the oil shall not exceed 100 degrees. 20. after the gear assembly, the tooth surface contact spot and the backlash should conform to the GB10095 and GB11365 stipulation. 21. sealing filler or sealant shall be allowed for assembly of hydraulic systems but shall be prevented from entering the system. 22. assembly parts and components (including purchased parts, outsourcing parts) must have the certificate of inspection department before they can be assembled. 23. parts must be cleaned and cleaned before assembly. There shall be no burrs, edges, skins, rust, chips, oil stains, stains and dust. 24. before assembly, the main Coordination dimensions of the parts, especially the interference fit size and the relative accuracy shall be reviewed. 25. assembly process, parts are not allowed to knock, touch, scratch and rust. 26. when screws, bolts and nuts are fastened, it is strictly forbidden to strike or use improper screwdrivers and wrenches. The fastening screws, slots, nuts and screws, and the head of the bolt shall not be damaged. 27. tightening torque req