Hydraulic punching method and device capable of keeping wall flatness of workpiece
A punching device and flatness technology, which is applied in the field of hydraulic punching and devices for maintaining the flatness of the workpiece wall, can solve the problems of undisclosed technical means of forming hole quality, high internal pressure, etc., to reduce manufacturing costs and control difficulties, The effect of reducing thrust, improving flatness and precision
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[0036] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. First of all, it should be noted that the present invention is not limited to the following specific embodiments. Those skilled in the art should understand the present invention from the spirit embodied in the following embodiments, and each technical term can be optimized based on the spirit of the present invention. broad understanding. The same or similar components in the figures are denoted by the same reference numerals.
[0037] The present invention provides a hydraulic punching device and a hydraulic punching method, which can make the part of the workpiece, such as the pipe fitting 6 in this embodiment, that needs to be punched before punching in one working stroke of the hydraulic punching cylinder. Bulging, a certain amount...
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