Hydraulic machine mold stamping rod

Abstract

The invention discloses a hydraulic machine mold stamping rod. The hydraulic machine mold stamping rod comprises an upper mold base, an upper cushion plate, an upper clamping plate, a stamping rod body, a lower mold plate, a lower mold cushion and a lower mold base. The stamping rod body is a rotating body and is divided into two segments, namely the cylindrical segment and the circular-truncated-cone segment, in the length direction, and the two segments are integrally formed. The connecting position is in the smooth transition condition. The diameter of the end, away from the cylindrical segment, of the circular-truncated-cone segment is small. A mounting cavity which allows the stamping rod body to be mounted therein and is formed in the upper clamping plate comprises an upper clampingcavity and a lower clamping cavity from top to bottom along the axis. The connecting position of the cylindrical segment and the circular-truncated-cone segment of the stamping rod body is in the smooth transition condition. In the stamping process, the upper portion of the circular-truncated-cone segment is completely attached to the inner wall of the lower camping cavity, and the outer surface of the upper portion of the circular-truncated-cone segment is a force bearing face. The force bearing area is large; the pressure intensity is small; force is borne in a uniform and balanced manner; the stamping rod body is not likely to be fractured; the service life is prolonged; and the machining cost is lowered.

Description

technical field [0001] The invention relates to a die punch rod of a hydraulic press. Background technique [0002] The electrode cap on the spot welding machine is a stamping part. In the prior art, the stamping rod of the hydraulic press mold is in the shape of a ladder, such as figure 1 As shown, in the stamping process, the step surface is the force-bearing surface, which is subjected to upward compressive stress, resulting in stress concentration, and the punch is easy to break from the step. Contents of the invention [0003] The object of the present invention is to provide a hydraulic press die punching rod, which solves the technical problem in the prior art that the stepped punching rod causes stress concentration during the punching process, and the punching rod is easy to break from the step. [0004] In order to achieve the above object, the present invention is achieved through the following technical solutions: [0005] A mold for an electrode cap hydrauli...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a hydraulic press die punching rod, which solves the technical problem that the stepped punching rod in the prior art causes stress concentration during the stamping process, and the punching rod is easy to break from the step

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