分析了框架结构外墙渗漏这一质量通病产生的原因，并提出了防治措施。

提供了一种用于连接“离合器毂与带轴齿轮”的压配焊合组件及使用方法,即通过对其组件及使用方法的研究,不仅可以有效地解决离合器毂与带轴齿轮在压配连接后易出现的变形问题,而且还可以有效地控制其焊合连接后的变形情况,从而达到提高压配焊合质量的目的.该压配焊合组件,结构新颖简单,使用方法独特易行,已推广应用,并收到良好的效果,且已申报了国家发明专利.

The forming process and design of a die for a locking bar guide frame were pre sented,especially the design of blanking,bending and punching mechanism for long joint type holes.

Manual assembly method is used for bearing assembly in the transmission system of large wheeled tractors, and this method can not adapt to requirement of modern enterprise production. In order to improve the quality of bearing assembly and lighten the working intensity of operators, several kinds of traditional assembly processes of bearings are improved. Improved assembly processes are introduced, and then their technical main points are also analyzed.

收获机械传动系内部轴承装配采用手工砸入的方式,已经不能满足现代企业生产的需要。有关单位为了提高传动系统的轴承装配质量,减轻工人的劳动强度,对几种轴承的传统装配工艺进行了技术改造,文章介绍了改进后的几种装配工艺,并对技术要点进行了分析。

This paper expounds cleanliness have an effect on quality of machinery product from the mechanical product power system and transmission system and surface coating on three aspects.With engine as an example to illustrate the influence factors of cleanness,puts forward the control and improve cleanness of technical measures and management scheme.

In order to solve the problem of Roundness Deviation,we analyze it by the Cpk method,and the quality improvement program is given.

A stream inoculation device with twin-tube was presented in this paper.It not only can on-line monitor the feeding process of the stream inoculation during pouring and ensure the feeding accuracy,but also can implement stream inoculation in the two working stations of the double tilting-type pouring machine.Compared with the original two stream inoculation devices with single-tub,it has the advantages of low-cost and high utilization.

The structural features of gearbox on middle power wheel tractor and the technological requirements of shifter shaft hole and sliding bar hole in gearbox are analyzed in this paper.Technological methods have been designed to ensure the quality of processing.Producing practice has shown that the technology is very efficient and the quality of products is consistent.

Introduced that the cone crusher structure constitute,the work principle and the designs of the main partses the essential theories calculation and related strength check.The advantage of the cone's crusher is that the chain of transport is short,the efficiency of transport is high,the manufacture processe is easy,and usage and support are very convenient,which is proper to keep with work under the bad environment.