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News

Factors affecting the quality of fine grinding

  • Author:Chois Dong
  • Source:www.boreway.com
  • Release on:2015-09-14
Precision machining tool for demanding, because steel stone has high hardness, excellent stiffness are widely used in precision machining of tool design. However, there are certain diamond processing shortcomings, it is because of its extreme hardness, is relatively difficult process, low grinding efficiency, precision diamond tool also requires a very sharpened cutting edge, great technical difficulty of producing a diamond cutting tool, in particular conduct diamond grinding.

Diamond grinding time is very long, so the key issue is to improve the grinding speed. So, when the fine grinding of factors affecting the quality of grinding What? Here to hook on to introduce specific network.
1. The abrasive particle size
The abrasive should uniformly cover the surface of the disc, and the small particle size of the abrasive coated on the circumference of the disc diameter is small, but large size of the abrasive wipe the disc diameter larger circumference.
When the disc rotates at high speed by the abrasive action of centrifugal force, has a tendency outward diffusion of the small particle size of the abrasive grains on the circumference of the disc diameter is small, when spread out fine abrasive, fine grains mixed with a large circumference coarse grain, which does not make grinding on a large circumference diamond rougher. Conversely, if the large size of the abrasive on the disc diameter smaller circumference, coarse grains by centrifugal force, the fine grains in the outer ring will spread, which makes the grinding disc diameter on the circumference of a large diamond roughness increased.

2.Grinding discQuality
Quality abrasive disk great influence on the surface to be machined. Grinding discs with high-quality cast iron, the surface evenly sago, does not allow trachoma, juice or other defects. Under the microscope, the abrasive disk surface has many pores evenly distributed, painted to the diamond powder embedded in these micropores will form grinding discs with a diamond powder abrasive, diamond grinding process. So cast iron lapping plate material is uniform fine, consistent and uniform pore size distribution of whether have a direct impact on the efficiency and quality of ground surface.

3. Impact of fine polishing
Fine polishing is polished with fine abrasive same time, so do vertical movement to the diamond grinding direction. In this polishing method can be ground off traces the machined surface, and further improve the surface quality.
Fine polishing operation is usually performed manually, this process is very stringent the requirements for the operation, which requires a real diamond on the loading force must be uniform, normal velocity to be constant movement, and finally must wear sports diamond will soon It leaves the disk, so as to ensure the surface quality.

4. Impact inverse mill grinding rolls of serrated edge
Reverse direction by the edge grinding mill is pointing direction of the tool body, grinding force of crystal EVOC blade edge, the blade pressure, the diamond has a greater compressive strength, it is not easy to jump edge. Shun mill, the grinding force direction from the cutter body point edge, edge crystal being pulled, because the tensile strength of the diamond than low intensity anti-stress, it is easy to jump edge, therefore, diamond grinding tool must press against the mill manner, which is diamond tool grinding process is an important principle.

5. The impact of deviation from good quality of the grinding mill direction
Grinding, fine grinding direction deviation, not only the productivity is low, and the surface roughness of the cutting edge and have an impact, so the deflection angle is controlled within a certain range.
Fine grinding purpose is to ensure the quality of the cutting edge, to achieve extremely Fengrui and no defects. Finally, tell the operator to engage the hook net diamond tool grinding, quality diamond tools and precision grinding machines and grinding processes applied has a very direct link.