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液压件产品质量好坏,一方面取决于零件质量,另一方面与基础件质量有很大关系,如螺钉、密封件、电磁铁、弹簧等。十多年来从液压件厂生产中出现的质量问题说明,弹簧质量好坏直接或间接的影响了液压件的性能。因此,一机部通用机械总局液压处于一九七九年十月在杭州召开了“液压件弹簧质量座谈会”,讨论研究了弹簧质量问题,并决定由杭州弹簧厂、广州机床研究所、太原工学院、榆次液压件厂组成“液压件弹簧设计与计算指导资料”编写小组。提供液压件厂和弹簧制造厂在弹簧设计与制造方面共同遵守指导资料中规定的一些主要技术指标,亦可供有关方面做参考。一九八一年十月在杭州由一机部通用机械总局液压气动行业和标准化研究所共同主持召开了“液压件弹簧设计与计算指导资料”定稿会,与会代表分析了液压件弹簧的使用要求,并对该资料将液压件弹簧工况分为四类,分别提出了几何精度、负荷精度和刚度精度的要求和液压件弹簧的通用技术条件以及弹簧制造厂必须首先保证设计提出的负荷、刚度精度。在此前提下,允许适当放宽几何精度,便于制造厂调整的观点。另外资料中着重对提出的特有见解——利用曲线族选取弹簧参数的合理简便方法,减少了设计计算的工作量,体现了实事求是的科学态度,给予肯定。与会代表也提出了欠完善的方面是:两项精度的选取对液压件的性能影响。负荷、刚度精度的必要性方面,尚需进一步探讨和做一些必要的试验研究工作,从定性定量方面加以论证以及国内及先进国家液压件弹簧设计、制造方面的有关资料、水平对比和国外样机与国内液压件弹簧精度实测性能比较。由于这次讨论内容较偏于理论和制造方面的问题,尚需听取液压件设计单位和用户的意见。液压件弹簧在行业中是一个普遍和比较基础的问题,解决的好坏,在不同程度上影响了液压元件的性能,随着产品质量的提高,当前这一矛盾逐趋突出,因此在《液压工业》上刊载“液压件弹簧设计与计算指导资料”,以推广使用,广泛征求意见,尤其希望液压件制造厂在设计使用和制造中,对本指导资料的各项内容、规定和技术指标等,予以考核验证,以便为今后制订部标打下基础。
The quality of hydraulic products depends on the quality of the parts on the one hand and the quality of the basic parts on the other, such as screws, seals, electromagnets, and springs. The quality problems that have arisen in the production of hydraulic components for more than a decade illustrate that the quality of the spring directly or indirectly affects the performance of the hydraulic components. Therefore, the Hydraulic Department of the General Machinery Department of the General Machinery Department held a “Hydraulic Parts Spring Quality Symposium” in Hangzhou in October 1979. The quality of springs was discussed and studied, and it was decided that Hangzhou Spring Factory, Guangzhou Machine Tool Research Institute, and Taiyuan The School of Engineering and Yuci Hydraulic Parts Plant composes the “Guideline for the Design and Calculation of Springs for Hydraulic Components”. The hydraulic components factory and the spring factory are provided to comply with some of the major technical specifications specified in the guidance materials in the design and manufacture of springs, and they are also available for reference by relevant parties. In October 1981 in Hangzhou, the Hydraulic and Pneumatic Industry and Standardization Research Institute of General Machinery General Administration of the Ministry of Machinery Industry jointly presided over the finalization of the “Hydraulic Spring Design and Calculation Guidelines”. The delegates analyzed the requirements for the use of hydraulic springs. , And the data on the spring conditions of hydraulic components are divided into four categories, respectively, proposed geometric accuracy, load accuracy and stiffness accuracy requirements and the hydraulic spring spring general technical conditions and spring factory must first ensure that the design proposed load, stiffness Accuracy. Under this premise, it is allowed to relax geometrical accuracy and facilitate the adjustment of the manufacturer. In addition, the data focuses on the unique insights that have been put forward. The rational and simple method of selecting spring parameters using the curve family has reduced the workload of design calculations, embodies the scientific attitude of seeking truth from facts, and gives affirmation. The delegates also proposed a less perfect aspect: the impact of the two precisions on the performance of hydraulic components. In terms of the necessity of load and stiffness accuracy, it is necessary to further discuss and do some necessary experimental research work, and to demonstrate from a qualitative and quantitative perspective, as well as relevant data on the design and manufacture of hydraulic springs in domestic and advanced countries, as well as the level of comparison and foreign prototypes. Comparison of actual measurement performance of domestic hydraulic springs. Since the content of this discussion is biased towards theoretical and manufacturing issues, it is still necessary to listen to the opinions of the hydraulic unit designers and users. Hydraulic spring is a common and relatively basic problem in the industry. The quality of the solution affects the performance of the hydraulic components to varying degrees. With the improvement of product quality, the current contradiction becomes more prominent. Therefore, the hydraulic pressure “Industry” published the “Guided data for the design and calculation of springs for hydraulic components” to promote their use and widely solicit opinions. In particular, it is hoped that in the design, use, and manufacture of hydraulic parts manufacturers, various contents, regulations, and technical specifications of the guidance materials, etc. To be verified and verified in order to lay the foundation for the formulation of departmental standards in the future.