Spring distribution principle

Spring distribution principle:

1. Wave spring When distributing and arranging, it should be ensured that the distance from the center of the spring via hole to the edge of the template is greater than the outer diameter D, and the distance from other vias should maintain a physical wall thickness of more than 5mm.

2. When arranging the springs, first consider the key stress-bearing parts, and then consider the balance and stability of the entire mold. The key stress-bearing parts

refers to: the shape of the inner stripper plate of the composite mold and around the punch; around the punch of the punching die; the bending edge of the forming die and the place where teeth are formed.

3. The springs should also be evenly distributed around the inner guide pillar to ensure normal mold movement.

China's spring standardization work began in the early 1960s and has a history of more than 40 years. It has formed a relatively complete standard system. Currently, there are 22 national spring standards and 30 industry standards. In 1999, the National Spring Standardization Technical Committee (SAC/TC235) was approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China and the spring standardization work was fully promoted. In 2004, ISO/TC

227 (springs) was established internationally, and my country participated in the work as a member. This marked that China's spring standardization work has entered a new stage, that is, the stage of comprehensive tracking and substantive participation in the work.

Special-shaped springs have the characteristics of small size, large load, easy combination and use, and also have the advantage of concentrated load transmission. A variety of different curves can be obtained by using single-piece combination, multi-piece combination and mixed combination.

It has replaced cylindrical coil springs in a wide range of machinery industry, reflecting the characteristics of new product (host) design with miniaturization and multi-function. For example, in the direction of load action, smaller deformation can withstand larger loads, and the axial space is compact.

Compared with other types of springs, its deformation energy per unit volume is larger and it has better buffering and shock-absorbing capabilities. Especially when used in a stacked combination, due to the surface friction damping effect, the effect of absorbing impact and dissipating energy is more significant. At present, it is widely used in national defense, metallurgy, engineering, electric power, machine tools, construction and other industries.

Wave springs are basic parts with large quantities and wide range. They are very important parts for power machinery, instruments and meters. Its function is to convert mechanical function or kinetic energy into deformation energy, or convert deformation energy into kinetic energy or mechanical work, in order to achieve the purpose of buffering and shock absorption. Since springs are widely used, a large increase in output will inevitably cause problems during processing. There are many reasons for spring heat treatment defects, because different heat treatment methods of springs will produce different defect properties. Let’s talk about the causes and protective measures of these defects in detail below.

A: The springs produced can meet customers' product quality requirements.

The selected materials can meet the process requirements of product processing.

Materials that can be purchased.

B: The selected materials are processable and economical for processing into spring products, and have high cost performance.

The ease of disposal of materials and the possibility of resource recycling should be considered.

C: The scrapping, processing, and finished products of selected materials are not harmful to the public and comply with government laws and regulations.

The material meets the special characteristics of the product, such as: specifications and dimensions, process performance, mechanical strength, heat treatment performance, environmental corrosion or impact, electromagnetic characteristics, operating environment temperature, etc.

The spring is just an energy accumulator. It has the function of storing energy, but it cannot slowly release the energy. To achieve this function of slowly releasing it, it should be achieved by "spring + large transmission ratio mechanism", which is common in mechanical watches. Spring has been used a long time ago. Ancient bows and crossbows are two types of springs in a broad sense.

Like most other basic mechanisms, metal springs have been around since the Bronze Age. Even as metal, wood was used as a structural member for flexible bows and military catapults. In the Renaissance, accurate clocks made precision springs inevitable for the first time.

The fourteenth century saw the development of precise clocks that revolutionized celestial navigation. The exploration and conquest of the world by the European colonial powers continued to power the watchmaker's science and art. Firearms were another area that drove spring development.

The advent of the Industrial Revolution in the eighteenth century brought about the need for large, accurate, and cheap springs. Given that watchmakers' springs were often handmade, springs Springs are mass-produced from piano wire or similar materials.

Advanced manufacturing methods make today's springs ubiquitous. Computer-controlled wire and sheet bending machines allow for the processing of custom springs.

This is strictly a specialized machine. It should be the British scientist Robert Hooke. Although helical compression springs had already appeared and been widely used at that time, Hooke proposed "Hooke's law" - the elongation of the spring is proportional to the force exerted. It is based on this principle that in 1776, helical compression springs were used. The spring spring balance was born.

The spring that conforms to "Hooke's law" is the real spring. The wave spring disc spring was invented by the Frenchman Belleville. It is a washer-type spring with a truncated conical cross-section made of metal sheet or forged blank.