本刊第二卷第三期胡祖仁同志在工場經驗欄中有介紹厂無心磨床的基本原理上,封無心磨床之工作原理作了一股性的介紹。筆者服務的廠中,有辛辛那梯2號無心磨床一架。近來因工作需要,對其工作法作了進一步的了解與研究,並且封工作物的品質作一些必要的控制。現將所得之資料,報告於後: The second volume of the second volume comrades Comrade Hu Zuiren in the field of experience in the factory introduced grinder heartless grinder on the basic principle of the seal grinder of the working principle made an introduction. The author of the service plant, a Cincinnati Centerpiece 2 grinder. Recently, due to the need of their work, they have made further understanding and research on their working methods and have made some necessary control over the quality of the sealed work. Now the information obtained, the report later: