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One-step forming fast precise die-casting automobile speed changing box

A technology of automotive gearboxes and precision die-casting, which is applied to gearboxes, transmission parts, components with teeth, etc., can solve the problems of not using automotive gearboxes, and achieve high raw material utilization, simple and convenient operation, and high molding accuracy high effect

Inactive Publication Date: 2010-10-13
TIANJIN XIANDA PRECISION DIE CASTING
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AI Technical Summary

Problems solved by technology

However, although this technology is widely used in the manufacture of automotive parts, it has not been used in the manufacture of automotive gearboxes

Method used

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specific Embodiment

[0008] One-time molding rapid precision die-casting automotive gearbox, its molding materials are various sinterable powders, including paraffin, plastic, low melting point metal powder, or their mixed powder.

[0009] Its technical solution is:

[0010] (1) Evenly spread a layer of the above-mentioned molding material on the workbench, that is, heat-sensitive powder. The powder spreading parameters are: thickness about 0.1mm~0.2mm; the descending distance of the forming cylinder is 0.15mm, the rising distance of the material cylinder is 0.2mm, and the carrier motor Speed ​​5unit / s, Roller motor speed 0.3unit / s;

[0011] (2) The auxiliary heating device heats it to a temperature below the melting point. In order to prevent the deformation of the part, the heating temperature at the bottom is generally higher than about 120°C;

[0012] (3) The laser is used to selectively irradiate the powder layer under the control of the computer, so that the irradiated powder reaches its si...

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Abstract

The invention relates to a one-step forming fast precise die-casting automobile speed changing box, which comprises forming materials of various sinterable powder, including paraffin, plastics, low-melting-point metal powder or mixed powder thereof. The invention is characterized in that a layer of forming materials, i.e. heat-sensitive powder with the thickness between 0.1 mm and 0.2 mm is uniformly paved on a work table; an auxiliary heating device heats the forming materials to a temperature lower than the melting point, the powder layer is selectively irradiated by laser under the control of a computer so that the irradiated powder reaches the sintering temperature, and surface layer adhesion occurs between powder grains, so the powder grains are sintered together; and then, the work table is lowered down by the height of a layer, and a layer of powder is paved on the sintered layer, so the automobile speed changing box manufactured according to the design requirements is fast formed through sintering layer by layer, and then, water is introduced for cooling. Through the technical scheme, the automobile speed changing box with a complicated structure can be fast formed, the production cost is lower, the production rate is higher, at the same time, the operation is simple and convenient, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of auto parts manufacturing, in particular to a rapid precision die-casting auto gearbox for one-time forming. Background technique [0002] At present, in the field of automobile manufacturing, there are two main types of rapid prototyping manufacturing technologies used to directly manufacture metal parts: 1. Selective laser sintering SLS; 2. Laser cladding-based direct prototyping technology for metal parts. Among them, the selected area laser sintering technology is widely used in the manufacture of auto parts due to the advantages of fast forming and high raw material utilization rate, such as the manufacture of clutches and engine intake manifolds. The degree has nothing to do, so it is especially suitable for engine block, cylinder head, intake and exhaust pipe and other parts with extremely complex internal structure; another important feature is a wide range of molding materials, especially resin sand and dis...

Claims

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Application Information

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IPC IPC(8): F16H57/02B22F7/02F16H57/032
Inventor 刘宜庆张太鑫
Owner TIANJIN XIANDA PRECISION DIE CASTING
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