| 摘要 |
PURPOSE: A dust trapping device for drilling is provided to check trapping state safely from a rotating drilling tool by manufacturing a spring-housing and a dust cylinder of hard material. CONSTITUTION: A dust trapping device for drilling comprises a spring-housing(20), a dust cylinder(30), and a spring(40). The spring-housing has a tool inserting hole(22) on center. A drill tool(T) is inserted into the tool inserting hole. The dust cylinder can be inserted into and drawn out the spring-housing. The spring is installed within the spring-housing. The spring projects the dust cylinder with the resilient force.
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