Q: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.

Q:Spindle runout of less than 0.003, the diameter of the cutter size, internal cooling. Excuse me, where is the reason?.

The tool flank surface is not smooth enough, the inverted cone angle is not correct, and the cooling is not enough.

Q:The problem of poor chip removal, special reamer scraps can not be found out. What's the main problem?

Reaming is not large, resulting in little chip; most of the reamer is a straight edge, even with a spiral angle reamer is not in order to chip (although there is a certain chip removal effect). It's usually artificial chip removal.

Q:What causes shrinkage hole after diamond reamer machining?

Large deformation of aluminum, increasing width of tool edge!

Q: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.

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

The edges of the two cutters can be used for micro cutting and scraping the walls of the extruded holes. The main cutting edges are end teeth (ends), but the main cutting edge of the reamer is small, the force is uniform, and the vibration is small. The drill main cutting edge cutting capacity, the cutting force is high, at the same time by centering the drill chisel edge effect, if the chisel edge center of bad point circle, the pore radius, the edge was just a guide.

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.

Do you use G81 or G85 or G01 feed?

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

Can replace the reamer hole cutter, but it is in the hole accuracy under the condition of not too high.If the hole of high accuracy, recommend the use of Boring Reamer or processing.

Q:To machining M8, blank hole reamer processing thread with what specifications of the machine (bottom)?

A drill with a diameter of 6.7 and a M8 tap (also called a tap). Not reamer. There is in the Baidu library, you enter the "drill thread bottom hole" see,Your 7H in the thread accuracy level is a rough level, there is no need to use reamer, and you find 6.7 of the reamer to find it? The internal thread accuracy is divided into three grades, precision, 4H, medium, 6H, rough, 7H. GB recommended using 6H.