| Project/Area Number |
13450052
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
機械工作・生産工学
|
|---|
| Research Institution | Utsunomiya University |
|---|
Principal Investigator |
ICHIDA Yoshio Utsunomiya University, Faculty of engineering, Professor, 工学部, 教授 (50091939)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SATO Ryunosuke Utsunomiya University, Faculty of engineering, Assistant, 工学部, 助手 (20312861)
MORIMOTO Yoshitaka Utsunomiya University, Faculty of engineering, Assistant professor, 工学部, 助教授 (00290734)
|
|---|
| Project Period (FY) |
2001 – 2003
|
| Project Status |
Completed (Fiscal Year 2003)
|
| Budget Amount *help |
¥13,700,000 (Direct Cost: ¥13,700,000)
Fiscal Year 2003: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2002: ¥4,500,000 (Direct Cost: ¥4,500,000)
Fiscal Year 2001: ¥8,200,000 (Direct Cost: ¥8,200,000)
|
|---|
| Keywords | New Polycrystalline CBN Abrasive / Direct Transformation / CBN Grinding Wheel / Fracture Strength / Grinding ratio / Grinding Force / Surface Roughness / Grinding Performance / cBN砥粒 / ナノ結晶体 / 研削加工 |
|---|
| Research Abstract |
A new type of polycrystalline CBN grit has been developed by direct transformation at high temperature and pressure from hBN of high purity which was produced using a chemical vapor deposition process. This new polycrystalline CBN(CBN-U) grit possesses an average primary crystal grain diameter less than 1 μm and its fracture strength is around 1.5 times higher than conventional polycrystalline CBN(CBN-55) grit. In grinding high-speed tool steel, the grinding ratio of the wheel containing CBN-U grits is 7〜9 times higher than that of the wheel containing CBN-55 grits. The estimated tool Life of the CBN-U wheel, based on the roughness of the finished surface, is much longer than that of the CBN-55 wheel.
|
