Rolling circle die with core rod

Abstract

The invention relates to the field of rolling circle dies with core rods, in particular to the rolling circle die with the core rod. The rolling circle die comprises an upper die capable of ascendingand descending and a fixed lower die. According to the rolling circle bending die, the rolling circle inner diameter is determined through a core rod, the pre-processing position can be positioned inadvance before stamping, and in the process that the pre-rolling part is gradually overlapped with the upper circular arc of a punching groove along with the circle center axis of the core rod, the pre-rolling part is gradually bent, and has reached the rolling effect; the processing mode enables the pre-processing position of the raw material to be more stable in walking quality along with the shape of a punch during rolling, and the inner diameter tolerance control is more stable; after the rolling operation is completed, the upper die rises, a formed product is driven out of a female die, at the moment, the rolling circle sleeves the core rod, due to the fact that the core rod is in the lower hanging state, the formed product is easy to draw out from one side of the core rod, so that the operation of the person is facilitated.

Description

technical field [0001] The invention relates to the field of rolling dies with mandrels, in particular to a rolling die with mandrels. Background technique [0002] Bending parts are one of the stamping parts with the largest number in the manufacture of modern industrial products, automobiles, electrical appliances, instruments and tools. Some of them use bending dies for bending forming. The existing rolling die has a relatively simple structure, including an upper die and a lower die. The upper die is provided with an arc-shaped groove, and the lower die is provided with a compression block. When forming, the workpiece is placed between the lower die and the compression block. The mold goes down, and the workpiece is bent and formed along the arc groove of the upper mold under the state of compression. The existing rolling mold can only form the rolling circle at one end of the hinge at a time. When processing the other end, the workpiece needs to be taken out and resha...

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