(Live chat)
.jpg)
When milling complex workpieces in milling machining center(1)
2016-01-27
►When milling complex workpieces in milling machining center, please pay attention to the following topics:
1. The end mill clamping
End mill machining centers mostly used spring clips Sets folder mode, when used in a cantilever form. In the milling process, the milling cutter may sometimes appear gradually extended from the tool holder, or even fall, resulting in scrapped parts of the phenomenon, the reason is common between due toolholder shank within the hole and the outer diameter of the end mill the presence of the oil film, formed due to insufficient clamping force. End mills are usually coated with anti-rust oil factory, if you use a non-water-soluble cutting oil when cutting toolholder bore also attached to a layer of mist film, when the shank and tool holder are present film, toolholder difficult to firmly grip the handle in the neutral milling machining can easily fall loose. So before the end mill setup, you should first milling toolholder shank and the hole cleaned with cleaning fluid, dry and then be clamped.
When the larger diameter end mills, even if the toolholder shank and very clean, or accidents that may occur out of the knife, then flattened gap should be used with the corresponding side of the handle and the lock mode.
Another topic that may occur after milling cutter is clamped in the toolholder milling machining neutral port at the break, the reason is due to the common use of time is too long toolholder, toolholder port portion has worn tapered caused at this time should be replaced with new toolholder.
2. vibrating end mills
Because there is a slight gap between the milling cutter and the holder, so the processing tool vibration phenomena may occur. End mill vibration causes uneven circumferential edge of cut, and cut expansion ratio of the original value increases, affect the machining accuracy and tool life. But when the machined groove width is too small, the tool may be purposefully vibration, to achieve the desired cutting width by increasing the amount of expansion, but the maximum amplitude of the end mill should in this case is limited to 0.02mm or less Otherwise, it can not be stable cutting. In the normal process of vibration cutter neutral as possible.
When the tool vibrates, should consider lowering the cutting speed and feed rate, as both are still big vibration reduced after 40%, you should consider reducing the amount of cut.
Such as the processing system in the resonance, the reason may be the cutting speed is too large, the feed rate is small, less rigid tool system, the workpiece clamping force is not enough and the shape of the workpiece or workpiece clamping method due to other factors, and you should be taken to adjust the cutting The amount of added tool system stiffness, improve feed rate and other measures.
Stay tuned for detailed product information company official website: http://www.langfengmetallic.com/
