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刮削工作是机床制造与修理中重要的加工方法之一,它约占整个制造、修理工作量的35％左右,而且精度要求高,所以刮削是很值得研究的。精密机床和精密仪器对于导轨的精度要求都很高,用传统的挺刮和手刮就不能满足要求。近年来发展了一种新的刮削方法——拉刮(见图1),拉刮光洁度可达(?)9,而手刮和挺刮只能达(?)7。精刮时深度可控制在0.5～3μm之间,这对精密机床的刮削工作尤为适用。拉刮法具有下列优点:(1)在拉刮时,不会产生落刀处的深坑,其花纹
Scraper work is one of the most important machining methods in machine tool manufacturing and repairing. It takes up about 35% of the whole manufacturing and repairing workload, and requires high precision. Therefore, scraping is worth studying. Precision machine tools and precision instruments for rail precision requirements are high, with the traditional Tingcha and hand scraping can not meet the requirements. In recent years, a new scraping method has been developed - pull scraping (see Figure 1). The scraping finish is up to 9, while the hand scraping and scraping can only reach 7. When the depth of precision scraping can be controlled between 0.5 ~ 3μm, which is particularly applicable to the scraping of precision machine tools. Scraping method has the following advantages: (1) in the scraping, will not produce a knife at the pit, the pattern