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在装卡工件时,采用压紧螺钉固定工件是经常的。但是,应用压紧螺钉卡紧薄壁的铸件、塑料件或焊合的薄板件等,往往容易由于压力过大而破碎或严重变形。为了防止以上情况发生,可以设计制造一种带有保险装置的螺钉(图示)。带有保险装置的紧固螺钉结构比较简单。当搬动套筒4时,如果压力超过安装在套筒4内的弹簧2的压力,套筒4就会顺斜槽自动上升,而与销钉5脱离不起作用,这样便保证了工
It is not uncommon to use clamping screws to secure the work piece when loading the work piece. However, the use of compression screw clamping thin-walled castings, plastic parts or welded sheet parts, etc., are often prone to crushing or severe deformation due to excessive pressure. In order to prevent this from happening, a screw with a safety device (pictured) can be designed and manufactured. Fastening screws with safety mechanism are simple. When the sleeve 4 is moved, if the pressure exceeds the pressure of the spring 2 installed in the sleeve 4, the sleeve 4 will automatically ascend along the chute without any effect from the disengagement of the pin 5, thus ensuring that