What a few general tolerances reamer level holes to machining, such as phi 10H7, the high precision hole boring
1. mechanical processing, general IT7 and IT8 reaming can be used as the end of the process.2. the boring can eliminate the machining deviation of the front process to a certain extent.The 3. reamer is a sizing tool, and the final bore diameter is mainly determined by the cutter.4. cutter diameter is adjustable, adjustable aperture is by the skills of staff to ensure the.5. reamer is a multi edge cutter, it has higher machining stability, higher work efficiency, easier to obtain good surface effect of workpiece.6. do not take measures, larger hole boring cutter to shock.7. boring is not suitable for the processing of smaller diameter holes.
General machine reamer is only guaranteed diameter tolerances, boring can ensure the cylindricity and position tolerance. 10H7 is generally used as a positioning pin hole hole, usually has the position degree, then recommend the use of CNC machine milling cutter.
General drill can reach IT9, higher requirements of the holes are required reamer, different reaming Reaming accuracy is not the same, generally reached IT7 is no problem, your H7 is 7 class tolerances
