CNC machine tools, end mill cutters of processing applications

End mill machining the workpiece on the cutting wheel tools, it is clear that the movement of the tool center rail gauge with the workpiece contour do not coincide, it is because the contour milling cutter motion envelope is formed. End mill cutter center point of the tool is called (4,5 axis NC machine tool known as a bit vector), knife sites meter track movement, which represents the trajectory of the tool. NC machining, is prepared in accordance with the size of the workpiece contour program, or by the trajectory of the size of the knife programming sites, which should be handled according to specific circumstances. In the full-function CNC machine tools, end mill cutter compensation system, according to the dimensions of the workpiece contour programming, established after the execution tool compensation, the CNC system automatically calculates, knife sites automatically adjust to the tool trajectory. Workpiece dimensions directly machining programs, tool wear, replace the machining program unchanged, and therefore the use of simple and convenient. Economical glass drill bit simple structure, low price, there is a certain amount of production enterprises have. In the economical CNC system, if no tool compensation function, can only knife sites trajectory size machining programs, which requires first calculate the trajectory of sites based on the size of the knife the size and contour tool diameter. Therefore computationally intensive, complex, and tool wear, replace the need to re-calculate the trajectory of the size of cutter sites, re-establishment of the machining program.

End mill cutter material

Climb helps prevent the use of drill bits for metal, can improve cutter life. But there are two points to note: ① as ordinary machining, should seek to eliminate the gap feed mechanism; ② When the workpiece surface residual casting, forging process to form an oxide film or other hardened layer, should adopt the milling.
The use of high-speed steel end mills require a more broad scope and use, even if slightly inappropriate choice of cutting conditions, not to be too much problem. The carbide end mills, while having good wear resistance at high cutting, but it's not as extensive use of high-speed steel end mill cutter and cutting conditions must be in strict conformity with the requirements of the cutter.

The speed of end mill cutter

In other parts of the mold cavity wood cutting tct saw blade, when the point of the concave portion is cut or deep cavities, end mills need to lengthen the amount of protrusion. If you use long-edge-type mills, due to the large deflection of the tool, the tool is easy to produce vibration and cause breakage. Therefore, in the process, if only near the ends of the tool cutting edge to participate, it is best to choose a longer total Grass cutting saw blade shank type cutter. When using large-diameter end mill horizontal CNC machining the workpiece on the machine, the deformation due to the weight of the tool produced by larger, more attention should be very easy to end cutting edge problems. In case you must use the long blade-type milling cutter, you need to significantly reduce the cutting speed and feed rate.
The choice depends primarily on the cutting speed is material workpiece; feed rate depends on the choice of material end mill cutter is the diameter of the workpiece. Some foreign manufacturers cutter tool cutting tool parameters with sample selection table for reference. But at the same time cutting parameters chosen by the machine tool systems affected the shape of the workpiece clamping methods and other factors should be adjusted cutting speed and feed rate according to the actual situation.

When the tool life for priority consideration may be appropriate to reduce the cutting speed and feed rate; when the chips from the edge of a bad situation, may be appropriate to increase the cutting speed.

End mill bits vibration phenomenon

Since there is a slight clearance between the end mill cutter bits and the holder, so in the process tool vibration phenomena may occur. end mill bits vibration causes uneven circumference edge of cut, and cut expansion than the original value increases, the impact of precision and tool life. However, when the machined groove width is too small, the wood cutting tct saw blade may be purposefully vibration, to achieve the desired groove width by increasing the amount of cut expansion, but the maximum amplitude of the end mill bits should be limited to this case 0.02mm or less otherwise, can not be stable cutting. In the normal processing of neutral cutter vibration as small as possible.

When the tool vibration, you should consider lowering the cutting speed and feed rate, as both are still large vibration is reduced by 40%, you should consider reducing the amount of cut.

Such as the processing system of cutting disc in the resonance, the reason may be too large cutting speed and feed rate is small, due to less rigid tool system, workpiece clamping force is not enough and the shape of the workpiece or workpiece clamping methods and other factors, and you should be taken to adjust the cutting dosage, increase tool system stiffness, increase the feed rate and other measures.

The use of Gushi end mill cutter

End mill cutter machining centers are mostly used spring clips suit sandwiched way, when used in a cantilever state. In the end mill cutter process, sometimes may appear gradually extended from the end mill cutter tool holder, or even fall, resulting in the phenomenon of the workpiece scrapped, the reason is usually because the knife is sandwiched between the inner hole and the outer diameter of the shank end mill cutters the existence of the film, resulting in insufficient clamping force due. End drill bits for wood cutters are usually coated with anti-rust oil factory, if you use a non-water-soluble cutting oil when cutting, will be attached to the tool holder bore mist layer film, when the toolholder shank and there are film, toolholder difficult to firmly grip the handle in neutral end mill cuttering process is easy loose fall. So before the end mill cutter setup, you should first end mill cuttering toolholder shank and the hole cleaned with cleaning fluid, dry and then carry out clamping.
When the larger diameter end cutting blade cutters, even toolholder shank and very clean, or accidents that may occur off the knife, then should be used with Weldon shank notch and the corresponding side locking mode.

Another problem that may occur after end mill cuttering cutter is clamped in the toolholder end mill cuttering machining neutral port at the break, the reason is usually because the toolholder used for too long, the holder of the port portion is worn tapered due at this time should be replaced with a new holder.

Aanalysis on end mill cutter

The main cutting edge end mill is a cylindrical surface, the end surface of the cutting edge of the blade is deputy. No central blade mill cutter at work can make along the axial feed motion. In accordance with national standards: milling cutter diameter of 2-50 mm, can be divided into two kinds of coarse teeth and fine teeth. Straight shank diameter range 2-20, 14-50 for the taper shank diameter range.

Standard end mills with coarse teeth and two fine. Coarse teeth end mill bits for 3 to 4 teeth, helix angle β bigger; a fine-tooth milling cutter teeth 5 to 8, the helix angle β smaller. Material part of high-speed steel cutting, steel shank 45.
There are many shapes cutter, general milling and CNC milling machine slot with a straight profile, the boring and cutting disc machining center cavity, core, curved shape outline available.

Cutter broadly divided into:

1. Flat cutter, fine-milling or roughing, milling grooves, remove large amounts of rough, a small area of the horizontal plane or contour finishing;

2. The end mill cutter, for surface finishing and semi-finishing; knife could face a steep fine milling / straight wall of the small chamfer.

3. round nose cutter, make minor changes in the surface, less a small recessed area, relatively flat area more rough milling.

The introduction of Gushi end mill cutters

Gushi launched gripping both sides of the blade high productivity disc end mill cutter blade row. With multiple cutting edges Cheap square blade face milling end mill cutter for the series was originally tailored, is now being extended to the new series of disc end mill cutter row on both sides of the blade. Series face milling due to superior performance is widely recognized in the industry. Based on the good use of feedback, gripping both sides of the same section of the blade disc end mill cutter blade row of semi-standard product series has been officially put on the market. The mid-blade-type cutting edge geometry of the design, both in the right-handed end masonry drill bit cutter holder, can be clamped in L-end mill cutter, the characteristics required from both sides for the simultaneous processing of applications attractive, and such milling parts used in the automotive industry are common. When using a new type of disc end mill cutters processed simultaneously on both sides of the steering installation savings ear positioning surface, using the output of the current tool more than doubled. Facts sds drill bit have proved that the series has high versatility and high productivity.