Lathe portal frame

The utility model discloses a lathe portal frame, including the coexistence post and set up in the crossbeam of coexistence post upper end, the crossbeam front end is provided with two slide track seats that are horizontal transversal arrangement, and the slide rail that is horizontal transversal arrangement is installed to the slide track seat upper end, and the compact heap that is fixed in slide track seat side pressing block groove that be provided with and that be horizontal transversal arrangement upper end is installed to the slide rail side, is provided with at least two between two slide track seats and is the circle and annular and be horizontal transversal arrangement's bearing frame. The utility model has the advantages of novel in design, simple structure, high rigidity, precision height, durable. 本实用新型公开了种机床龙门架，包括有两立柱及设置于两立柱上端的横梁，横梁前端设置有两呈水平横向布置的滑轨座，滑轨座上端装设有呈水平横向布置的滑轨，滑轨侧端装设有固定于滑轨座侧端设置有的并呈水平横向布置的压块槽上端的压紧块，两滑轨座之间设置有至少两个呈圆环状的并呈水平横向布置的轴承座。本实用新型具有设计新颖、结构简单，高刚性、精度高、耐用的优点。