Forging and forming mechanism for contracted handles of screw taps

Abstract

The invention relates to a forging and forming mechanism for contracted handles of screw taps. The forging and forming mechanism comprises a die assembly and an ejection mechanism. The die assembly comprises an upper sleeve die, a lower sleeve die and a die base, an upper sleeve is arranged in the upper sleeve die, a first through hole is formed in the upper sleeve, a die core is arranged between the upper sleeve die and the lower sleeve die, and a second through hole and a hard alloy die layer are formed in the die core. A lower sleeve is arranged in the lower sleeve die, a third through hole is formed in the lower sleeve, and the lower sleeve die is connected with a bush. A die sleeve is provided with a fastening cap. The ejection mechanism comprises a cylinder body and a lower cross beam, a piston rod is arranged in the cylinder body, an ejection rod sleeve is arranged in the piston rod, a safety bar is arranged in the lower cross beam, and a safety pin is arranged in the safety bar. The forging and forming mechanism is precise in structure and high in loading capacity, can improve the machining efficiency and has the safety effect, the forging formability of the contracted handles is high, and the condition that the ejection mechanism or the whole machine is damaged because the ejection mechanism bears overloads is prevented.

Description

technical field [0001] The invention relates to a tap shank reduction forging and forming mechanism, which belongs to the technical field of parts machining. Background technique [0002] A tap is a tool for processing internal threads. According to its shape, it can be divided into a spiral tap and a straight edge tap. The handle of the tap is forged and thinned by a forging press, also called a shrinking handle. [0003] The forging forming mechanism on the forging press realizes the forging and thinning of the shrinking shank and the release of the shrinking shank products, but the forging forming mechanism in the prior art has unreasonable design of the forging die assembly structure and poor pressure bearing capacity; due to the hardness inside the forging or other The cause of the failure will cause the ejector mechanism to bear the overload pressure. With the continuous operation of the machine, the ejector mechanism will be damaged or the whole machine will be damage...

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Problems solved by technology

[0003] The forging forming mechanism on the forging press realizes the forging and thinning of the shrinking shank and the release of the shrinking shank products, but the forging forming mechanism in the prior art has unreasonable design of the forging die assembly structure and poor pressure bearing capacity; due to the hardness inside the forging or other The cause of the failure will cause the ejector mechanism to bear the overload pressure. With the continuous operation of the machine, the ejector mechanism will be damaged or the whole machine will be damaged, resulting in large economic losses and other problems.

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