Manufacturing process of gearbox

Abstract

The invention discloses a manufacturing process of a gearbox. The process comprises the following steps: casting: making a mold of the gearbox; fixing the mold on a core shooter; heating the mold to 300-350 DEG C and preserving the heat of the mold for 20-40 minutes for later shooting; shooting resin sand into the mold through a core shooting hole of the core shooter, so that the resin sand is full of a cavity of the mold; patching a modeled resin sand mold; brushing a coating to the surface of the resin sand mold; arranging and closing the resin sand mold; lifting the resin sand mold; putting a pouring cup at a pouring gate of the mold; putting a dead head cup at a dead head; smelting the mold in an immediate frequency furnace; pouring molten iron into the cavity by using a crane ladle for pouring; and opening a box to discharge a finished product. The manufacturing process of the gearbox, disclosed by the invention, has the advantages of high production efficiency and good product quality.

Description

Technical field: [0001] The invention relates to a manufacturing process of a gear box. Background technique: [0002] At present, the traditional gearbox is welded with 5-6mm steel plates, which is not only heavy, but also due to welding defects, uneven welding stress, and temperature difference changes, etc., may cause the weld seam of the box to crack, resulting in gear failure. The normal operation is affected due to oil leakage in the tank, which not only causes economic losses, but also causes environmental pollution. The production of the gearbox is all obtained by mechanical processing, that is to say, the method of cutting the blank of the part is used to process it into the required shape, so that the production efficiency of the gearbox is low and the quality of the product is poor. Invention content: [0003] The object of the present invention is to provide a manufacturing process of a gearbox with high production efficiency and good product quality in order ...

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional gearbox is welded with 5-6mm steel plates, which is not only heavy, but also due to welding defects, uneven welding stress, and temperature difference changes, etc., may cause the weld seam of the box to crack, resulting in gear failure. The normal operation is affected by oil leakage in the oil tank, which not only causes economic losses, but also causes environmental pollution

The production of the gearbox is all obtained by mechanical processing, that is to say, the method of cutting the blank of the part is used to process it into the required shape, so that the production efficiency of the gearbox is low and the quality of the product is poor.