Device for grinding counter bores of coupling holes of steam turbine rotor

• Main Authors: GAO YAN, DING AIMIN, JU MENG, LIU QI, LYU JIBAO, CONG JIANCHAO
• Format: Patent
• Language: Chinese; English
• Published: 30.11.2021
• Subjects: DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; GRINDING; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; PERFORMING OPERATIONS; POLISHING; TRANSPORTING

The utility model relates to an electric grinding device for grinding a counter bore of a turbine rotor, in particular to a device for grinding the counter bore of the turbine rotor, and aims to solve the problems that when a bench worker grinds the counter bore of the turbine rotor, the counter bore is deep, and a grinding head is difficult to remove chips; and the inner hole and the end face of the counter bore are ground and damaged again by the ground scrap iron. The grinding machine comprises a mandrel and a grinding wheel, the mandrel comprises a first cylinder, a second cylinder, a cuboid and a third cylinder, the mandrel is a single piece, the second cylinder is machined on the first cylinder, the cuboid is machined on the second cylinder, the third cylinder is machined on the cuboid, threads are machined on the third cylinder, and the grinding wheel is a bowl-shaped grinding wheel. The diameter of the interior of the grinding wheel is sequentially increased from top to bottom, a square through hole i