The sort of milling cutter, utility reachs choice principle
(the picture originates Internet, if have tort, connection is deleted)
(the picture originates Internet, if have tort, connection is deleted)
Flying knife is comprised by a main body, inserted among them or two knives head. As the whirl of knife head, knife head can undertake narrower or wider cutting. Face milling cutter is more general below all sorts of circumstances, but their price is expensive, and the treatment content that these flying knives also can finish face milling cutter, the price is very cheap, but in cutting efficiency respect far under face milling cutter.
The principle that milling cutter chooses
The choice of diameter of 1 milling cutter
Because the product differs with what produce batch and the choice of milling cutter diameter has very big difference. The choice of cutting tool diameter basically depends on the treatment dimension of the norms of equipment and workpiece.
Planar milling cutter
When choosing diameter of face mill cutting tool, basically want to consider cutting tool place to need power to should be inside limits of machine tool power, also can choose according to diameter of machine tool main shaft.
Diameter of face milling cutter can press D=1.5d (D gives priority to axial diameter) choice.
When large quantities of quantities are produced, also can press the diameter of cutting tool of 1.6 times choice of workpiece cutting width.
Establish milling cutter
The alternative that establishs milling cutter diameter basically should consider the machines dimension requirement of workpiece, make sure cutting tool place needs power to be inside limits of machine tool rated power.
If be small diameter,establish milling cutter, the should be a machine tool the biggest revolution of main consideration whether the rate of the smallest cutting that achieves cutting tool (60m/min) .
Open groovy knife
The diameter of groovy milling cutter and width should the basis is chosen by the dimension of treatment workpiece, inside the power range that its cutting power should permit in the machine tool.
The choice of razor blade of 2 milling cutter
A. To finish machining. Best choice uses abrade bit. This kind of razor blade has better dimension precision, the fixed position precision that accordingly milling is cutting blade is tall, can obtain better treatment precision and exterior surface roughness.
B. To rough machining, had better use suppress bit, can reduce finished cost so.
He Feng benefit spends the dimension precision of suppress razor blade to be differred than abrade razor blade, but the point strength of suppress razor blade is better, concussion is fought when rough machining, can bear to be cut greatly mix greatly big feed.
C. Sharp big before horny razor blade can cut agglutinant material with Yu Xi (like stainless steel) . Carry the cutting action of sharp razor blade, reduced the bit attrition between workpiece material, cut bits to be able to leave bit front quickly.
The choice of cutter hub of 3 milling cutter
A. Above all, when choosing milling cutter, must consider tine number.
The tooth that cutting participates in at the same time when the old young general of pitch decides milling is counted, affect the smoothness of cutting and the demand to speed of machine tool cutting.
Thick tine milling cutter is multi-purpose at rough machining, because it has the bigger chamfer that discharge bits.
Below identical feed rate, the load of every tine cutting of thick tine milling cutter is more than close tine milling cutter.
B. Deepness of the cutting when mill of essence of life is shallow, it is 0.25-0.64mm commonly, recommend choose close tine milling cutter.
C. In process of heavy-duty thick milling, too great cutting power can bring about rigid and inferior machine tool to appear flutter.
This kind of flutter can bring about blade of collapse of hard alloy razor blade, shorten thereby cutting tool life. Use thick tine milling cutter to be able to reduce the demand of pair of machine tool power.
Accordingly. When size of main shaft hole lesser (be like R8, 30 taper hole) when, can undertake effective milling with thick tine milling cutter.
Epilogue
No matter be in CNC milling machine still is on average milling machine,choose milling cutter, we should consider the material of milling and hardness integratedly, the norms of milling cutter, be like: Long, knife grows blade, blade diameter, handle diameter. High-speed steel milling cutter applies to average milling machine normally, and CNC milling machine is first choose hard alloy cutting tool.
(the picture originates Internet, if have tort, connection is deleted)