Method for forming multi-layer frame longitudinal beam and multi-layer frame longitudinal beam
A technology of longitudinal beams and frames, which is applied in the field of frame longitudinal beams, can solve problems such as unsatisfactory bending strength and torsional strength, difficulty in applying nested beam closing technology, and unstable gaps, etc., to achieve simplified beam closing Process and hydraulic process, stable clearance, and easy processing
Inactive Publication Date: 2012-07-04
胡旭
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Problems solved by technology
In this manufacturing process, the beams are hydroformed first and then nested. The process is relatively complicated and the processing cost is high. Moreover, the gap between the layers of the nested composite beam is unstable, resulting in insufficient bending strength and twisting strength. ideal
Moreover, for some special longitudinal beams with variable cross-section, it is difficult to apply this nested beam closing process due to the limitation of the geometric shape of the cross-section.
Method used
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Embodiment Construction
[0026] The present invention will be further described below in conjunction with the examples.
[0027] In Embodiment 1, the multi-layer forming method of the frame longitudinal beam includes the following steps:
[0028] Step 1: Holes are processed on each layer of the beam sheet for making the longitudinal beam of the vehicle frame, and the holes are processed by drilling or flat punching;
[0029] Step 2: Flatten the beams of each layer after drilling or punching together, and the flat together means that the beams of each layer are stacked together in a manner parallel to the length direction of the plate;
[0030] Step 3: The flattened beams are hydraulically formed with a mold at one time.
[0031] Specifically, in the first step, the purpose of drilling or flat punching the beam sheet is to obtain positioning holes. The first step can be drilling or flat punching of each layer of beams separately, or one-time drilling or flat punching after stacking each layer of beam...
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The invention discloses a method for forming multi-layer frame longitudinal beam and a frame longitudinal beam which is formed by the method. The method for forming the multi-layer frame longitudinal beam comprises the following steps of: 1, drilling or balancing each layer of beam plates for manufacturing the frame longitudinal beam; 2, flatly combining the drilled or balanced beam plates; and 3, integrally molding the flatly combined beam plates through a mold. The frame longitudinal beam manufactured by the method consists of two or more than two layers of longitudinal beams which are laminated and molded integrally through the mold. In the provided method for forming the multi-layer frame longitudinal beam, the processing process is simple and the formed frame longitudinal beam has higher flexural strength and torsion resistance.
Description
technical field [0001] The invention relates to a multi-layer forming method of a vehicle frame longitudinal beam and a vehicle frame longitudinal beam made by the method. Background technique [0002] Frame rails are a common structure found on automobile frames, especially on vans. The longitudinal beams are arranged on the left and right sides of the vehicle frame, and the bending strength of the vehicle body is mainly provided by the longitudinal beams of the vehicle frame. In addition, the frame longitudinal beam is also required to have certain anti-torsion performance. Ordinary frame longitudinal beams are first hydraulically formed from beams made of steel plates into profiles with grooved cross-sections, and then processed into frame longitudinal beams. Frame stringers have single-layer stringers and multi-layer stringers. Among them, the anti-bending and anti-torsion properties of multi-layer longitudinal beams are stronger than those of single-layer longitudina...
Claims
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IPC IPC(8): B23P15/00B62D21/02
Inventor 胡旭
Owner 胡旭