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    • 2. 发明专利
    • Drive plate and manufacturing method for the same
    • 驱动板及其制造方法
    • JP2012241887A
    • 2012-12-10
    • JP2011116086
    • 2011-05-24
    • Aisin Aw Co Ltdアイシン・エィ・ダブリュ株式会社
    • IWATA DAISUKEHORI TOMOYUKIYOKOYAMA NAOKIOBAYASHI KOJITAGUCHI KEITASHIBATA HIROSHI
    • F16H55/17B21D53/28C21D1/06C21D1/09C21D1/10C21D1/76C21D9/32C22C38/00
    • F16H41/24B21D53/28C21D9/32C22C38/00C23C8/02C23C8/22C23C8/80F16H55/06F16H55/17Y10T74/1987
    • PROBLEM TO BE SOLVED: To provide a drive plate allowing to satisfy both of a hardened tooth-shaped portion and reduced manufacturing cost, and a manufacturing method for the same.SOLUTION: A drive plate includes a disk-shaped plate portion 10; and a tooth-shaped portion 2 formed at an outer peripheral end of the plate portion 10. The plate portion 10 and the tooth-shaped portion 2 are integrally shaped from a single steel plate material. The plate portion 10 and the tooth-shaped portion 2 include carburized layers 15, 25 provided over an entire surface layers of the plate portion and the tooth-shaped portion, the carburized layer having a carbon concentration higher than that of a thickness-direction center portion of the plate portion and the tooth-shaped portion. The carburized layer 15 of the plate portion 10 is higher in hardness than the center portion 17 of the plate portion in the thickness direction. The carburized layer 25 of the tooth-shaped portion 2 has been subjected to a quenching process, and is further higher in hardness than the carburized layer 15 of the plate portion 10. The carbon concentration in center portions 17 and 27 of the plate portion 10 and the tooth-shaped portion 2 in the thickness direction is 0.2 mass% or less and the carbon concentration of the carburized layers 15 and 25 exceeds 0.2 mass%.
    • 要解决的问题:提供一种能够同时满足硬化齿形部分和降低制造成本的驱动板及其制造方法。 解决方案:驱动板包括盘形板部分10; 以及形成在板部10的外周端部的齿形部2.板部10和齿形部2从单个钢板材一体成型。 板部分10和齿形部分2包括设置在板部分和齿形部分的整个表面层上的渗碳层15,25,碳渗透层的碳浓度高于厚度方向中心 板部分和齿形部分。 板部10的渗碳层15的硬度比板部的厚度方向的中心部17高。 已经对齿形部分2的渗碳层25进行淬火处理,并且硬度高于板部分10的渗碳层15.板部分10的中心部分17和27中的碳浓度 齿形部2的厚度方向为0.2质量%以下,渗碳层15,25的碳浓度超过0.2质量%。 版权所有(C)2013,JPO&INPIT