U-bolt bending equipment

Abstract

The invention discloses a U-shaped bolt bending equipment, which includes a bending mold and a press machine. The bending mold includes a punch and a concave mold. The concave mold is fixed on a static mold base, and the convex mold is arranged on a movable mold base. Above, the movable mold base is driven by a press, and also includes a support cavity, the support cavity runs through the movable mold base and the die, and a ejector rod is arranged in the support chamber, and the ejector rod is connected to a nitrogen spring device. The beneficial effects of the present invention are: high production efficiency, low cost, nitrogen springs are used to continuously maintain a certain pressure during the bending and forming process, U-shaped bolts follow the moving mold when they are demoulded, ensuring forming accuracy, and making bending The process tends to be stable and the product consistency is good.

Description

technical field [0001] The invention relates to a metal machining device, more specifically, it relates to a bending equipment for manufacturing high-strength special-shaped U-shaped bolts. Background technique [0002] At present, while the automobile industry is developing rapidly in China, it also drives the development of the auto parts mold / equipment industry. Auto parts factories are usually equipped with professional mold workshops, which are constantly improving the quality requirements of auto parts. In the past, the mold industry has also raised the efficiency and quality requirements to an unprecedented important position. Capacity requirements and high quality are already The contradictions in the auto parts manufacturing industry at this stage. At present, most of the U-bolts used for the connection of the automobile suspension and the axle tube are imported from abroad. For the U-bolts, the metal forming process currently used in China mainly adopts the hot pr...

AI Technical Summary

Problems solved by technology

At present, most of the U-bolts used for the connection of the automobile suspension and the axle tube are imported from abroad. For the U-bolts, the metal forming process currently used in China mainly adopts the hot pressing method, and the bar is heated before bending. to a certain temperature, and then molded. This process requires heating the bar, consumes a lot of energy, high cost, expensive equipment, and complicated operation. For example, the bar must be coated with anti-oxidation and anti-seepage before entering the furnace. Carbon coating, and the processed metal has a large rebound force, the forming is not accurate, which affects the precision, and the outer surface of the metal is prone to oxide skin; and the working temperature of hot pressing is high, and the forming effect of complex and deep drawing cannot be done.

The applicant also tried to entrust domestic metal processing enterprises to develop processing equipment suitable for N10054-003YM01 bolts, but the precision of the workpiece could not meet the requirements by using hot pressing, and the springback after bending was not easy to control. It is difficult to guarantee that the high-quality rate of the product has not been satisfactory. For this type of product, its tooling and supporting process route are very strict, the control is not good, and the appearance is prone to appearance defects such as fur and roughness. Therefore, the applicant is urged to Determined to develop a new U-shaped bolt forming equipment by ourselves, so that the N10054-003YM01 bolt can meet the requirements of high strength and high precision, and meet its use requirements

The processing technology of N10054-003YM01 U-bolt is to flatten the bar part and then bend it. However, due to the high precision requirements of this product, especially for the shape precision of the arc section, the common metal Bending equipment can not reach the requirement of the present invention design

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