Steel automobile wheel balancing block with large gram weight and manufacture method thereof

Abstract

The invention discloses a steel wheel balancing block with single weight of more than 60 grams (containing 60 grams), comprising a balancing weight block and a spring hook, wherein the upper part of the spring hook is provided with a clamping part, the lower part of the spring hook is provided with a combination part which is fixed with the balancing weight block together, the upper surface of the balancing weight block is provided with a positioning groove, a protrusion is at least arranged on the bottom surface of the positioning groove, and the lower surface of the balancing weight block corresponding to the protrusion is a plane; and a rivet hole which is matched with the protrusion of the balancing weight block is arranged on the combination part of the spring hook so as to enable the spring hook to be riveted with the balancing weight block together by the protrusion. The invention also discloses a manufacture method of the balancing weight block in the balancing block, comprising the following steps: blanking and punching the positioning groove; bending blanks; cleaning the surfaces of the bent blanks; preheating; coating a lubricant; heating by induction; carrying out temperature plastic molding; deburring; carrying out surface shot blasting; pressing characters on the surface of the balancing weight block; riveting and fixing with a spring hanger; and painting on the appearance.

Description

technical field [0001] The invention relates to a wheel balance weight and a manufacturing method thereof, in particular to a heavy steel automobile wheel balance weight with a single piece weighing more than 60 grams (including 60 grams) and a manufacturing method thereof. Background technique [0002] Regardless of steel hub or aluminum hub, in the manufacturing process, due to factors such as processing technology and materials, it is impossible to guarantee absolute concentricity between the wheel axle and the wheel, and there is a certain eccentricity. When the car keeps running at a speed of 70-80 kilometers per hour, due to the eccentric distance between the wheel and the axle, the car will have severe bumps, which will affect the performance and safety of the car. Therefore, regardless of whether the steel hub wheel or the aluminum hub wheel must be checked for dynamic balance before installation, according to the results of the dynamic balance check, one or several ...

AI Technical Summary

Problems solved by technology

However, because the formability of steel is inferior to that of non-ferrous metals, when the weight of the steel wheel balance weight reaches or exceeds 60 grams per piece, the formability at room temperature drops significantly, the formability increases sharply, and the unit load of the mold approaches or exceeds The allowable strength of commonly used die steel is exceeded, and it is extremely difficult to maintain normal production

However, the rivets on the steel wheel balance weight formed by stamping process need to be punched by a special method of punching a half hole (blind hole), and there will be a half hole (blind hole) on the front of the balance weight, which not only affects the appearance , and after the vehicle has been running for a period of time, dust will be embedded in the half hole (blind hole), which is not easy to clean

In addition, due to the stamping characteristics, the outline junction of the steel wheel balance weight formed by the stamping process cannot adopt arc or chamfer transition, the shape is rigid, and it may interfere with the wheel during installation

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