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Tooth form part foundry technique method

A casting process and parts technology, which is applied in the field of direct casting molding for tooth-shaped parts, can solve the problems of long production cycle, easy wear of tooth-shaped parts, and poor product quality, so as to save production costs, simplify production processes, The effect of reducing equipment investment

Active Publication Date: 2008-08-27
山东时风(集团)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the current industrial production, various toothed parts are widely used, but due to the inherent characteristics of the toothed parts, the toothed parts are easily worn during use, which causes the parts to be replaced in time
At present, the production of tooth-shaped parts is all obtained through mechanical processing methods, that is to say, the method of cutting the blank of the part is used to process it into the required tooth shape, which generally requires high processing accuracy and long production cycle. , The production rate of defective products is high, so that the production efficiency of tooth-shaped parts is low, and the quality of products is poor; as for the direct casting of tooth-shaped parts, although there are some similar methods, they are limited to experiments and have no real meaning For example, some companies use high-precision ceramic casting, although they can also cast tooth shapes, but compared with this process, the cost is too high, and it is not convenient for mechanized production. Fragility also makes the mold unable to maintain continuous high-precision production. To sum up, it is urgent to design a new processing method for tooth-shaped parts to meet the needs of modern production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The process steps of direct casting tooth shape of tractor rear axle driven gear are as follows:

[0021] (1) According to the tooth shape requirements of the tractor rear axle driven gear, first make a model that is completely consistent with its tooth shape as a master mold;

[0022] (2) Make the appearance of the iron mold. The shape of the iron mold is required to match the core shooting machine of the coated sand. The inner size of the cavity is required to be the maximum size of the master mold plus 8mm. The inner cavity of the iron mold shape and the tooth-shaped master mold model are formed When matching, the gap is guaranteed to be 8mm;

[0023] (3) Fix the master mold on the workbench of the sand shooting machine, and close the iron mold shape, heat it to 270°C and keep it warm for 30 minutes to shoot the sand;

[0024] (4) Shoot the coated sand onto the pre-designed iron mold through the sand shooting hole of the sand shooting machine, so that the coated san...

Embodiment 2

[0029] The process steps of the direct casting tooth profile of the driven large gear of the rear axle of the three-wheeled agricultural vehicle are as follows:

[0030] (1) According to the tooth shape requirements of the rear axle driven gear of the three-wheeled agricultural steam, first make a model that is completely consistent with its tooth shape as a master mold;

[0031] (2) Make the appearance of the iron mold. The shape of the iron mold is required to match the core shooting machine of the coated sand. The inner size of the cavity is required to be the maximum size of the master mold plus 8mm, so that the inner cavity of the iron mold shape is matched with the tooth-shaped master mold model. When the gap is guaranteed to be 8mm;

[0032] (3) Fix the master mold on the workbench of the sand shooting machine, and close the iron mold shape, heat it to 300°C and keep it warm for 30 minutes to shoot the sand;

[0033] (4) Shoot the coated sand onto the pre-designed iron...

Embodiment 3

[0038] The process steps of the direct casting tooth profile of the driven large gear of the rear axle of the three-wheeled agricultural vehicle are as follows:

[0039] (1) According to the tooth shape requirements of the rear axle driven gear of the three-wheeled agricultural steam, first make a model that is completely consistent with its tooth shape as a master mold;

[0040] (2) Make the shape of the iron mold. The shape of the iron mold is required to match the core shooting machine of the coated sand. The inner size of the cavity is required to be the maximum size of the master mold plus 6mm, so that the inner cavity of the shape of the iron mold is matched with the tooth-shaped master mold model. When the gap is guaranteed to be 6mm;

[0041](3) Fix the master mold on the workbench of the sand shooting machine, and close the shape of the iron mold, heat it to 280°C and keep it warm for 30 minutes to shoot the sand;

[0042] (4) Shoot the coated sand onto the pre-desig...

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Abstract

The invention relates to a gear-like part casting technique, in particular to a technique for directly casting gear-like parts. The method can directly cast gear-like parts by using a gear-like cavity obtained by the iron-mold coated sand process. The technique has the advantages of no cutting or extremely less cutting, low cost and simple and feasible operation, and is applicable for most of enterprises.

Description

technical field [0001] The invention relates to a casting process method for tooth-shaped parts, in particular to a method for direct casting molding for tooth-shaped parts. Background technique [0002] In the current industrial production, various toothed parts are widely used, but due to the inherent characteristics of the toothed parts, the toothed parts are easily worn during use, which causes the parts to be replaced in time . At present, the production of tooth-shaped parts is all obtained through mechanical processing methods, that is to say, the method of cutting the blank of the part is used to process it into the required tooth shape, which generally requires high processing accuracy and long production cycle. , The production rate of defective products is high, so that the production efficiency of tooth-shaped parts is low, and the quality of products is poor; as for the direct casting of tooth-shaped parts, although there are some similar methods, they are limi...

Claims

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Application Information

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IPC IPC(8): B22C9/22
Inventor 刘成强林连华于子岭纪昌勇戚玉庆徐海港郭文海李汝学
Owner 山东时风(集团)有限责任公司
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