-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
- Cosmetic Ingredient
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
Recently, the National Standardization Management Committee officially released the national standard for plastic gear precision "GB/T38192-2019 Definition and Allowable Values of Ipsilateral Tooth Surface Deviation and Radial Comprehensive Deviation for Precision Injection Molded Plastic Cylindrical Gears"
.
Dr.
Shi Zhaoyao, the leader of the drafting team of the plastic gear precision standard, said that after the review by the National Gear Standardization Technical Committee, the standard fills the gap and reaches the international advanced level, which is what the plastic gear industry has been looking forward to for decades
.
Establishing standards is a requirement of mature markets
Establishing standards is a need of mature markets Establishing standards is a need of mature markets Establishing standards is a need of mature marketsAs the most widely used transmission device in mechanical transmission, gear has a long history of development
.
Compared with metal gears, plastic gears have the advantages of light weight, low inertia, low noise, and self-lubrication
.
Especially in the past two decades, with the successful development and modification of high-performance engineering plastics such as high strength and high wear resistance, plastic gears are developing in the direction of bearing higher loads, and the application of plastic gears has been further expanded.
There is an application trend of "replacing steel with plastic"
.
However, for a long time, with the development and application of plastic gears growing day by day, China has no plastic gear standards, especially the lack of the most basic plastic gear precision standards, which seriously restricts the development of China's plastic gear industry
.
At present, there is still a certain gap between the manufacturing level of plastic gears and developed countries, resulting in a passive situation that China still needs to import a large number of high-end plastic gears from abroad
.
To break through this predicament, it is necessary to start from the design of gear products, the research and development of plastic materials, the design and manufacture of injection molds, the research of new injection molding equipment and new injection molding processes, and the detection and experiment of gears.
The establishment of a standardized system is not required
.
However, due to the large differences between plastic gears and metal gears in terms of design requirements, manufacturing methods, and application sites, the formulation of precision standards for plastic gears is quite complicated, which has become an urgent problem to be solved in China's gear industry
.
Promote the overall development of the industry
Promote the overall development of the industry Promote the overall development of the industry Promote the overall development of the industry The precision standard of injection-molded plastic gears provides a standard basis for product measurement testing and grade determination, which is conducive to ensuring product quality and reliability, thereby guiding product orderly competition and healthy development, and promoting continuous innovation and industry technological progress
.
It can not only regulate the production behavior of enterprises, establish a benign market order, and promote the progress of industrial technology, but also expand procurement channels for enterprises, reduce external dependence, improve work efficiency, and greatly reduce procurement and maintenance costs
.
Industry formulation and international standards
Industry formulation and international standards Industry formulation and international standards Industry formulation and international standards In the process of standard formulation, the standard formulation team led by Shi Zhaoyao not only adopted the latest ISO precision standard system, such as terminology, precision classification concept and tolerance calculation formula, but also combined the mature technology and experience of plastic gears in China.
Formed a precision grade calculation, measurement and evaluation system for injection gears with Chinese characteristics
.
Injection gear has its particularity, with the characteristics of small modulus, tooth shape formed by mold at one time, reinforced structure and so on
.
Therefore, the precision of injection-molded gears and their measurement methods cannot be completely equal to the ISO1328 and ISO/TR10064 series standards
.
Although the Chinese injection gear precision standard is not equivalent to the ISO standard, it is consistent with ISO in macro aspects and is in line with international standards as much as possible
.
In the process of formulating this standard, the ISO1328 standard and the relevant standards of Japan, the United States, and Germany have been thoroughly studied, and the content of this standard has been determined comprehensively considering the domestic industrial situation, so as to ensure the advanced nature of this standard
.
Wang Zhigang, secretary-general of the National Gear Standardization Technical Committee, said that the formulation of the standard is quite difficult.
From the establishment of the project in 2015 to the completion today, it has gone through ups and downs.
This is a comprehensive summary of China's plastic gear industry
.
He hopes that there will be more innovations in the field of small modulus plastic teeth, and the next step is to expect a breakthrough in the standardization of plastic teeth strength and life tests
.
