Stamped workpiece surface adhesion burr detection method

Abstract

The invention discloses a stamped workpiece surface adhesion burr detection method, which belongs to the field of stamped workpiece burr detection, and the method comprises the following steps: covering the surface of a workpiece with an easy-to-damage film, exhausting gas between the easy-to-damage film and the workpiece, and enabling the easy-to-damage film to generate tensile deformation to betightly attached to the surface of the workpiece under the action of vacuum pressure such that adhesion burrs on the surface of the workpiece punctures the easy-to-damage film, then selectively adopting a liquid spraying condensation or powder spraying and film coating mode to detect the burr position on the surface of the workpiece, spraying a colored adhesive on the surface of the easy-to-damagefilm when the liquid spraying condensation mode is adopted, and tearing the film after the colored adhesive is solidified, wherein the adhesion part of the easy-to-damage film and the workpiece is aposition of the workpiece with burrs, when the powder spraying and film coating mode is adopted, colored viscous powder is sprayed and attached to the surface of the easy-to-damage film, the outer side of the easy-to-damage film is covered with a transparent film, the position between the easy-to-damage film and the workpiece is filled with gas, and the area with the phenomenon that the powder isblown up and adhered to the transparent film is the burr position of the workpiece.

Description

technical field [0001] The invention relates to the field of burr detection on stamping workpieces, and more specifically, to a method for detecting adhesion burrs on the surface of stamping workpieces. Background technique [0002] Stamping is to rely on presses and molds to apply external force to plates, strips, pipes, and profiles to cause plastic deformation or separation, so as to obtain workpieces (stamping parts) of required shape and size. The stamping process is One of the processing methods with less and no chips, it is widely used in the processing and production of sheet metal parts, fasteners and other parts because of its advantages of high processing efficiency, low production cost, and favorable for large-scale processing. Among them, 60-70% are plates, most of which are stamped into finished products. [0003] During the stamping process, the workpiece to be processed undergoes plastic deformation under the extrusion of the upper mold and the lower mold. D...

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Problems solved by technology

[0003] During the stamping process, the workpiece to be processed undergoes plastic deformation under the extrusion of the upper mold and the lower mold. During this process, the workpiece to be processed will completely fill the gap between the upper mold and the lower mold, and the workpiece and the mold are completely attached Together, this often leads to the phenomenon of adhesion between the workpiece and the mold when the upper mold and the lower mold are separated. When the workpiece is forced to separate from the mold, it will cause burrs and unevenness on the surface of the workpiece. The area is small and not obvious, and it is difficult for the staff to confirm its specific position on the workpiece

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