Due to the brittle characteristics of graphite materials, high-speed machining of graphite is not like plastic deformation of plastic metal materials
Material removal is not achieved by obtaining belt shaped or node shaped chips, but by the impact and pressure of the tool on the graphite surface material
Chipping and peeling are realized by brittle fracture of graphite material and generation of chip particles or powder.
The fine granular dust (chips) produced in the process of graphite cutting affects the service life and processing of machine tools and cutters
The accuracy is greatly affected. If graphite dust enters the main shaft, it will cause unstable clamping, long service life of the main shaft bearing and knife
It has adverse effects such as reduced service life, increased downtime and reduced dimensional accuracy of workpieces. For high speed machining
In the center, because the spindle speed is very high, unstable clamping will cause great inertial centrifugal force, and even cause tool breakage,
It will not only cause waste products, but also bring danger to operators and machine tools. Graphite dust entering the machine tool will aggravate the machine
The wear of the sliding surface will cause the wear of the lead screw and linear guide rail when entering the feeding system. Graphite is a good conductor
Electrical materials and graphite dust entering the data line interface will affect data transmission, and will affect its flexibility after entering the CNC system
Sensitivity and reliability, and even cause short circuit of electrical system to cause production accidents [4 ¨ 31].
In addition to the basic functions of the general high-speed machining machine, the special high-speed machining machine for graphite must also be tested
The following three aspects are considered: (1) dust seal of the spindle and feed system; (2) The working area of the machine tool is protected by a splash shield
And the top plate are completely sealed: (3) the machine tool is equipped with an integrated powerful vacuum cleaner to control the dust generated during processing
It is discharged from the work area and collected into plastic recycling bags for unified treatment [9, 44, 45]. At present, commonly used stones at home and abroad
Ink high-speed machining machine tools mainly include Makino SNC series, Mitsubishi roku roku series and okk DGM
Series, Hsui Fong mg.850, Mikron bmcl2, r6ders rpm800 and Datron dynamics
M9.gr, etc.
The ordinary machining center can also be used for high-speed machining of graphite after modification. Due to the sealing of the machining center itself
The performance is generally good. Closing the protective door can effectively prevent graphite dust from escaping. Therefore, the modification of the machining center
The construction is mainly dust collection transformation. For the transmission system located under the workbench, it is difficult to completely seal and prevent dust, but
Install a dust collecting pipe near it, pay attention to the dust prevention of the main shaft, and blow air to clean the tool handle when changing the tool to prevent
Dust adheres to the handle and is brought into the spindle. After each processing, the graphite dust shall be cleaned in time and the processing shall be cleaned
Center. The dust collection transformation is mainly to install dust collection devices. For the transformation of the processing center, the dust collection device should be installed
The dust collecting tube is simple in structure and easy to take materials. It can be modified from ordinary plastic tubes, which is convenient to use and low in cost,

The dust collecting area is small, and the dust collecting pipe can be installed close to the processing area. When installing, try to ensure the safety of the dust collecting pipe
The airflow direction is consistent with the discharge direction of graphite dust during processing, which can effectively collect dust [41