A process for efficiently forming composite material leaf springs
A composite material plate and process method technology, which is applied in the production field of manufacturing composite material leaf springs for automobiles by a molding process, can solve the problems of inability to achieve mass production, occupying a long time for molds, and high labor intensity for laying and pasting. The effect of automatic mass production, high production efficiency, shortening of preheating and curing cycle
Active Publication Date: 2020-09-08
AVIC COMPOSITES
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Problems solved by technology
At present, the molding process is widely used in the composite material industry. In the production practice of using prepreg as the main material and using the molding process to manufacture composite leaf springs for automobiles, the laying of the prepreg in the mold is labor-intensive and the production Low efficiency, unstable paving quality, long time occupation of molds, unable to achieve mass production
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Embodiment Construction
[0029] The present invention will be further described in detail through the accompanying drawings and specific embodiments below.
[0030] As shown in the figure, this embodiment provides a process for efficiently forming a composite material leaf spring, including the following steps:
[0031] (1) Model the leaf spring, and model the leaf spring model hierarchically from bottom to top to form N (2, 3, 4...) single-layer models stacked together, that is, the first single-layer model , the second single-layer model...the Nth single-layer model, the first single-layer model, the second single-layer model...the width of the Nth single-layer model is equal, and the curvature of the contact surface of the upper and lower adjacent single-layer models corresponds; The principle of determining the number of layers is based on the maximum cutting depth of the ultrasonic cutting equipment, that is, in order to make the maximum thickness of the layered single-layer model less than the m...
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The invention discloses a process for high-efficiency molding of a composite plate spring. The process comprises the following steps: (1) subjecting a plate spring to modeling and carrying out layeredmodeling on a plate spring model from bottom to top; (2) preparing a curved-surface workbench according to each single-layer model; (3) separately carrying out paving and pasting on each curved-surface workbench by using an automatic tape laying machine so as to form a whole piece of a blank material and cutting the whole piece of the blank material with a cutting machine so as to form a plurality of single blank materials with the same structure; and (4) piling up the plurality of single blank materials and carrying out compression molding so as to form the plate spring. With such a technical scheme, the process for high-efficiency molding of the composite plate spring greatly improves the production efficiency of the composite plate spring prepared through molding and can realize automatic batch production of the composite plate spring.
Description
technical field [0001] The invention relates to a process method for efficiently forming a composite material leaf spring, and belongs to the production technical field of a composite material leaf spring for automobiles manufactured by a molding process. Background technique [0002] At present, most domestic commercial vehicles use longitudinal leaf spring suspensions. Leaf springs are the most widely used elastic components in longitudinal leaf spring suspensions. They are composed of several alloy springs of equal width but unequal length. An elastic beam of approximately equal strength, when the car is running, the load on the frame is transmitted to the loading box through the leaf spring, and then to the axle, during which the elastic deformation of the leaf spring acts as a buffer. The leaf spring has simple structure, low cost, convenient maintenance, and can play a guiding role, and the friction between the plates can also have a certain damping effect. However, t...
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IPC IPC(8): B29C70/34B29C70/54
CPCB29C70/345B29C70/545B29L2031/774
Inventor 丁晓春李玉平孙树凯
Owner AVIC COMPOSITES