Q:What causes shrinkage hole after diamond reamer machining?

The sharpness of the reamer decreases and no effective cutting is formed. It results in the formation of friction, extrusion and reaming, and shrinkage is the expression of elastic deformation recovery

Q:Machining center with 4MM and 6MM white steel reamer, 45 steel material, spindle speed and feed speed settings how much ah!

What size of allowance do you have?. You seem to have a small amount of feed. You use a thinner reamer and do not know how large the main deflection angle of your reamer is. If your reamer is machined to the end, there is a slight effect and the force is complex. When the chip is in a disc shape, it is difficult to discharge, and the friction between the wall and the hole is severe, so that the tool can be easily broken.It is recommended to reduce the amount of cutting and wear a certain main angle of deviation. If the aperture is relatively large, it is recommended to carry the knife often.Try using a small cutter instead of a reamer. Or buy a screw reamer directly.

Q:Use and do not use the threaded hole reamer reamer, what do you mean, how to choose the aperture

Use and do not use the threaded hole reamer reamer, refers to the different machining method of taper thread hole at. Machining taper thread hole, if you do not use the reamer, only in accordance with the minimum size of the taper thread bottom hole drill hole, then taper tap directly using reamer tapping; machining taper threaded hole machining taper thread hole, or the first in accordance with the small size of taper threaded hole drilled outlet, and then use the taper reamer with taper to wring then, the taper taps, so machining taper thread holes, cutting the amount of tap is smaller than the cutting amount without taper reamer reaming tapping more tapping is also easier.

Q:The workpiece material is Q345D, is the whole hard alloy reamer diameter 18 6 blade laevorotatory right edge reamer, now found out the hole hinge inside there is always a circle cut, when processing the machining allowance for unilateral 0.2mm, reamer speed 120r/s, feed rate is 45mm/min, the cooling liquid is emulsion, which can master under the guidance, the argument is correct. It's better to give a machining parameter, s and F, thank you. The tool is added to several beds, beating about 1 wires.

Speed can be fed too fast, suggest speed 120, feed 6 to 10, if you can margin, as far as possible less unilateral 0.1 on the line. I have also been out of this problem, that is how to solve it, as well as the quality of the tool is also critical, ah, you tried to adopt Oh.

Q:NC machining, the speed and feed of the reamer

There is no accurate data, only experience,,Question is not very professional, do not know how much,With the material, but also with clamping rigidity, tool rigidity, tool size, margin, the requirements of the accuracy of the drawings and so onNot a unified answer, in fact, the actual situation depends on the processing of the scene to determine the speed and feed,Adjust at any timeNow let me tell you something about my operation. I do horizontal boring and millingGray iron, milling cutter, assuming 200--300, speed 100--200, the fastest 250 mm depth of 10 mm 1--2 feedDrilling, high-speed steel drill bit, 40 bit, speed 60--150 between 0.4--1 mm, as the size of the drill changes, the speed and feed will also change,End mills and keyway cutters, speed 60--80, feed 0.4--0.8Boring, boring. Assuming the diameter of 100 holes, boring bar 60 thick, length 200, speed 200--300, feed 0.26--0.63 precision boring: margin 0.8--1.2, speed 350--550., feed 0.1--0.17Reamer, cutting allowance 0.1, add oil, feed speed 15--30, 0.6--1.5 mmThe above is my experience, the premise is that you must sharpen the tool,I always feel like a clip on a knife, and I don't always have the tools to sharpen it by hand

Q: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?

Q:With a machining center, the diameter of the hole is 28, and the cutting amount of the reamer when reaming

The speed is between 380 and 500.. Feed the F150. spindle at each point. Stop the back tool. The screwed hole is free of thread. Try it.

Q:Why are the dimensions of the reamer larger than the size of the hole?

This is certainly bigger than hole cutting tool, the key is you choose how much allowance, allowance is processed in your material, to see if he had deformation like, generally with a diameter of 0.1 to about 0.15mm, is relatively good. Thank you

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:Hole diameter requirements 30, 0-4 wire, what specifications of the reamer?

Hello. It's fine to use a high precision reamer. 980312522QQ Germany BECK shell reamer can meet this requirement. Our reamer is the size after reaming.