Q:Can we use milling cutters instead of reamer to process holes, the accuracy of holes H7

High precision, precision milling cutter H7 is not so high you can use boring

Q:The drill holes to make reamer reaming little what method is solved, (drill reaming to hit Phi 8.5, Phi 9)

How long has the reamer been on? What's the depth of the hinge? First change a new one that meets the accuracy requirements of the reamer.

Q:What's the result of the reaming of the inside hole of the reamer?

The prefabricated hole too, the outer circle of the elliptical reamer reamer, do well. There is a problem with the accuracy of machine tools. Do not understand, we drill bit drill did not appear elliptical hole Oh.

Q:Difference between milling cutter and reamer

Besides they say, the most intuitive is that the blade part of machine reamer is very short, while the neck is very long, so it looks like a long dumbbell.The end mills have longer cutter teeth, accounting for 1/2~2/3 of the overall length of the tool, and the neck is short. The cutter tooth is spiral and has fewer teeth. It looks sharp.People who don't know much about knives do so.

Q:What a few general tolerances reamer level holes to machining, such as phi 10H7, the high precision hole boring

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

Q:The reamer H7 and H8 are of high accuracy

The difference is that the accuracy of the machining of the base hole is different in the tolerance fit. H7 has higher accuracy.Take an aperture of 10 millimeters as an example:1, H7 accuracy is, the upper limit +0.015[mm], the lower limit is 0[, processing error must be between +0.015 and 0.];2, H8 accuracy is, the upper limit +0.022[mm], the lower limit is 0[, processing error must be between +0.022 and 0.].

Q:The sale of these spiral reamer (punch) is illegal? Crime?12 blade spiral reamer, right helix 2-3 degreesFront diameter 5.45 to 5.5 mm, rear diameter 5.40 to 5.5 mm, middle diameter 5.75 mm, line depth 0.1mm or so

No, just punch reamer with a drill tool and lathe tools like, he has no destruction, as long as you do not use it to manufacture guns and gun barrel is not illegal. Like machine tools, the same can be produced guns, but can not say that the sale of machine tools are also illegal?

Q:The edge of the reamer and drill bit can cut metal, one is only oriented, and why?

Reduce the cutting heat caused by friction during processing, prevent the bit and reamer from overheating and change the tool material, affecting the service life of the reamer and drill bit.

Q:What are the causes of internal bore runout in lathe reaming?

Workpiece runout error is too large

Q:I need to use this knife to do the work. The material is QT450-10. When the tool is made, the first step is to process and reheat the required hardness without welding the blade, then weld the blade and reprocess.

My suggestion is high frequency quenching or mesh belt furnace quenchingI don't know the size of your work here. If it's over 50, then you will not be able to do it later