论文部分内容阅读
列宁格勒印刷机械厂在零件分类和标准化的基础上进行了工艺专业化,使得50％以上的零件实行了成组加工。为此,建立了专业化成组加工流水线和工段,制订了生产计划和工艺定额。工厂里,约有59％的零件(旋转体零件、铸件、轧件和模锻件)的机械加工,分别在16条机械化成组加工流水线上进行。为了对具有复杂平面和空间表面的铸件和轧件进行成组加工,采用了带有快速传动装置的可调夹具系统。工厂里,一半以上的铣工都在装有这种夹具的机床上工作,这种夹具的使用效果(加工指标)见表1。工厂的经验表明,当采用可调夹具并与先进的生产组织形式相结合的时候,可获得最大的经济效益。在零件的成组加工线上推广此种夹具,可保证提高劳动生产率25～30％。并且,使用多年来,劳动生产率每年稳定增长8～14％,因而全厂性指标提高了一倍。
Leningrad Printing Machinery Factory in the parts classification and standardization based on the process of specialization, making more than 50% of the parts into a group processing. To this end, the establishment of a specialized group of processing lines and sections, developed a production plan and process quotas. Approximately 59% of the parts (rotor parts, castings, rolled and forgings) are machined in the factory on 16 mechanized assembly lines. In order to process castings and rolled parts with complex planar and spatial surfaces, an adjustable clamping system with a rapid transmission is used. In the factory, more than half of the mill workers work on the machine tool with such fixtures. The results of using such fixtures (processing targets) are shown in Table 1. Factory experience shows that when adjustable fixtures are used and combined with advanced forms of production organization, maximum economic benefits are obtained. Promote this kind of jig in the group of group processing line of the part, can guarantee to raise labor productivity 25- 30%. And, over the years, labor productivity has been growing at a steady rate of 8-14% annually, thus doubling the whole-factory target.