| 摘要 |
PURPOSE:To realize processing which is not affected by a warp and a curve by setting, on the sintered shaft part, an axis for finish processing of the sintered shaft part while treating the center of rotation of a sintered wheel part of a ceramic turbine wheel, formed through sintering ceramics, as the standard of said setting. CONSTITUTION:At the time of the captioned manufacturing, after first forming an unsintered turbine wheel 30 from silicon nitride (Si3N4), center holes are drilled on the end part of an unsintered shaft part 10 and the end part of a hub 21 as standards for the unsintered shaft part processing, and each hole is utilized for rough processing on the outer peripheral face of said shaft part 10. After subsequent sintering, a support implement Q is fixed in the center hole 40 on the end part of a sintered wheel part 20a, while a support implement S with the flat tip is adhered closely to the back face 24 of the hub 21. Thus, an axis Y for finishing the sintered shaft part is set in a sintered shaft part 10a while treating the rotation center X of a sintered wheel part 20a as the standard of setting. Later, a conical stand-shaped cutting part 51 is formed by means of an axis processing implement 50 and supported by means of a support implement, and then the sintered shaft part 10a is processed for finishing. |
