Visual detection device of tool wear state

The utility model discloses a visual detection device of tool wear state, which comprises an image collecting platform; an image collecting device is installed on the image collecting platform and is connected with a computer; the image collecting platform comprises a base which is provided with a first sleeve and a first lead screw; the top of the first lead screw is connected with a first handle; the first lead screw is provided with a first screw; a cross beam is sheathed at the outer side of the first sleeve; the first screw is connected with the cross beam on which a second sleeve is fixed; the inner cavity of the second sleeve is provided with a second lead screw; one end part of the second lead screw is connected with a second handle; a second screw is installed on the second lead screw; and a bracket is sheathed at the outer side of the second sleeve and is connected with the second screw. In the utility model, the tool wear state is detected based on machine vision, and the wear state and wearing capacity of the tool can be detected without detaching the tool, so that on-line detection can be realized, and the wear state of the tool can be automatically recognized.