Electroplating with abrasive honing the bore wall after cutting the workpiece to form three phases

Details are as follows: analysis of the electroplated CBN honing finishing with a small hole in the hinge mechanism and Heng Heng with the force. Contrast reaming, honing and grinding, honing with abrasive cutting plating workpiece bore wall after a swipe, farming  polycrystalline diamond chip formation in three stages. Honing tool by the tangential force, the normal force and the axial force, the tangential forces are the main cutting force, with a rotation of the honing of the inner hole wall friction, because a pair of fixed handle couple; the normal force is within the hole wall  synthetic diamond  on the honing tool, ultimately offset; axial force generated by the cutting part of the main angle; produce chips based on the conditions of the axial force must meet certain numerical requirements, but the axial force is the force deformation thus honing tool affected.

Need to further improve the internal machining accuracy and surface roughness

For an aspect ratio greater than 5, 4-20mm diameter cylindrical hole mass parts finishing requirements, compared with electroplated CBN honing precision boring, grinding and honing  abrasive wheels . But with the development needs of precision parts, need to be further improved bore machining accuracy and surface roughness. Honing tool is reduced by deformation processing quality bore key factor, but by having the structure deformation, and the honing process decided by the force  abrasive grinding  is not clear, and  abrasive wheels  having the structure of the honing process optimization is necessary. Based electroplated CBN deep processing technology status and the general theory, the paper electroplated CBN honing tool design and parameters optimization conducted in-depth research.

Transparent material even beyond the hardness of diamonds

Diamond is not the world's hardest materials, superhard cubic boron nitride material is boron nitride particles  grinding wheel  into a super-hard material form, the test results show that the transparent material even beyond the diamond hardness, Vickers hardness 108GPa, and synthetic diamond Vickers hardness of 100GPa, and the material hardness of the commercial CBN twice. The future of this superhard materials with the current  cutting tools  price lower hardness CBN considerable, perhaps the future can be used for machining, milling, drilling and cutting tools.

More stable than the chemical nature of diamond

CBN abrasive industrial production known as the abrasive industry to achieve a milestone achieved breakthrough results. Cubic nitriding hardness just below the diamond turning, and more stable than the chemical properties of diamond. Since cubic boron nitride alone is hard to achieve turn cubic nitride and metal connection is very  abrasive grinding . These two super abrasive surface complementary to adapt to the abrasive produced by their processability range Yan cover to include high brittle, high-strength ductile material, including almost all abrasive brazed CBN (cubic boron nitride ) process to explore a material to be processed, grinding has thus entered a  synthetic diamond  can achieve a new era of high-precision work. However, the domestic has some superhard cubic boron nitride CBN abrasives (grinding wheel), mostly electroplated grinding wheel, grinding wheel on the coating metal abrasive industry simply can not play the strict sense of the "binding agent" role, as electrodeposition metal coating with abrasive and abrasive substrate interface.

Different contents of Ti on the performance of vitrified

CBN instruments binder materials can be divided into three categories: metal bond tools, ceramic bond tools and resin bond tools. Many scholars at home and abroad for metal-ceramic composite  abrasive grinding  very seriously. Wang from other studies with different contents of Ti on vitrified performance. Guan Yan, also on the base of Cu and Sn vitrified  cutting tools  were studied. There is also the metal-binding agent and mature vitrified raw materials are mixed together to prepare formulations vitrified metal coverage, the clay, feldspar, quartz, talc, boron glass, vitrified bond and copper, nickel, cobalt and tin metal binding agent are mixed together.

Cathodic protection measures to ensure the wheel surface micro-abrasive group

Specifically includes the current types of different growth rate of the coating, results in a current density range of the coating growth rate calculation parameters, and according to the method Hull cell test dispersion bath and a suitable current density range, and the use of cathodic protection measures to ensure micro abrasive wheel  abrasive grinding  of the group, and the ring wheel plating jig improved, reducing the difficulty of the sand. Improve the abrasive wheel arrangement controllable  polycrystalline diamond . Through the above process improvement and optimization measures, to create a highly controllable bare grain, slightly abrasive grit good group of high-controllable sample wheel arrangement.

The abrasive grit abrasive or group and their spacing can be carried out in accordance with the requirements

Consolidation of traditional craft manufacture abrasives, superhard abrasives especially electroplating, since very small grains, causing abrasive grinding process work surface easily blocked, leading to premature failure or generate abrasive grinding heat damage a serious obstacle to parts machining quality and improved efficiency. To solve the above deficiencies, the abrasive grains or abrasive group in  Abrasive grinding wheel  with the requirements and their spacing are arranged for scientific or distribution of the most effective methods. To solve this problem, this paper  synthetic diamond with the relevant National Natural  grinding wheel  Foundation of China and Liaoning Province Natural Science Foundation research requirements, pre-controlled three-dimensional arrangement of abrasive grinding wheel plating method has been improved and optimized.