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FAQ

If you want to drill out 20 of the hole with a reamer, what size drill should you use first?

Because some of the drilling bit out of the hole is too large, such as drilling 19 of the drill hole is often 19.1/19.2, this situation should be more often encountered. If the reamer you use for machining is of good quality, it is recommended that the drilled hole be 19.9. Usually, the allowance for the reamer is 0.1-0.2mm. As to how large the drill is, it depends on how large the hole you drill out of. You can try using the 19.5 bit.

Hit a circle, beating is 2-3 wire, reaming 16 holes should be little problem. 20-30 spare margins are left, and the reamer is new. But why does this problem arise? Ask the teacher for help!!!

Your situation is generally high speed (this time our customers use our reamer also met), then you have allowance is big, then the machining center normal left margin on the line 0.15MM. Finally, this knife is also a bit of a problem, otherwise it won't be a new knife and there will be such a problem. Also ask, you this workpiece material is stainless steel?

What is CNC reamer?

Generally refers to the single indexable blade reamer (currently only international companies only), such as Sweden and Germany is MAPAL indexable single edge reamer, cutting smoothly without vibration, high machining accuracy, reaming allowance, high cutting speed, shape and position error is small, long tool life;But some people put the reamer in the NC machine tool called NC reamer, the scope is big, a reamer, common straight shank machine machine reamers with adjustable pressure, expansion reamer, reamer taper and taper shank reamer etc..

Please enlighten brother snow reamer 150125110 motorcycle valve is not universal and how the hinge valve

Motorcycle valve reamer is a set of the above several cars can be common.Reaming the valve is the best way to find a local repair car or motorcycle master, which is not clear here.Generally use 75 degrees, then 15 degrees and 45 degrees of reamer, and finally the effect after reaming, and then use several tools to trim. Use 45 degrees to the right contact width of reamer, reamer can take 15 degrees contact hinge low 75 degree knife to contact surface to improve the contact surface, preferably 1 mm or so, if it is too wide for 15 degrees and 75 degrees of cutting narrow. After reaming, grind the valve and check the seal.

Would you tell me if there is an approximate range of speed required for machine reamers in reaming?

The speed is related to the material of the workpiece, the size of the reamer, the allowance for machining and the roughness requirements. General steel with high speed steel cutter cutting speed is 20 meters per minute speed N=1000*v (cutting speed) / PI D, such as the 10 reamer in 20 meters cutting speed speed of N=1000*20/ (3.14*10) = 640 rpm, feed F= feed (MM/) such as *N (speed), reaming feed is 0.2/, then F=0.2*640=128MM/. From the above formula, we can choose the most economical parameter as much as possible under the premise of meeting the quality requirements.

Machine is a horizontal machining center Huakai, machining hole size is 14mm through hole, the first with 13.5 bits, then the 14 hinge reamer, reamer is 120 speed 320 feed speed, casting hardness is HB170 ~ 241, made out of the hole often bell shaped, reamer blade also day after day grinding, grinding or not, sometimes for a new reamer like bell. Who can help me analyze the reasons?.

You are using a high speed steel cutter, for hard alloy - increase the rigidity decreases beating!!

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

Workpiece runout error is too large

Mr. Cui, Kong is 9.97. I want to use my 10H7 reamer to reaming the hole with my hand. The book said that small or excessive margin will affect the reaming accuracy, then 0.03 of the margin can also be reaming to hinge it? I don't quite understand why the small margin affects the accuracy of reaming If so, what else would be done with thick hinges and precision hinges?.

Each knife distribution margin will be not the same, you are asked to assign allowance Oh, recommended by electroplating diamond reamer, you do not know the accuracy is not high, if the demand is high, is recommended by electroplating reamer, it can be divided into coarse and fine reamer to hinge, to consult Henan stone diamond reamer.