Structural characteristics of the press
Release time:
2022-09-06
Press It is used in many industries, including forging and refractory materials industries. In recent years, with the development of science and technology, the market demand for high-quality, high-precision, and low-cost products has become increasingly large, and the demand for equipment used to manufacture products has also become increasingly diverse. International competition in manufacturing is becoming increasingly fierce. Therefore, let's take a look at the structural characteristics of presses.
The structural characteristics of the press are as follows.
1. Miniaturization, lightweight, multi-functional, and integrated structure.
2. Extend component life and improve system reliability.
3. Reduce hydraulic vibration and noise.
4. Improve control capabilities by combining electronic technology.
Because servo presses have many advantages that traditional presses do not have. Currently, 99% of companies are purchasing servo presses, and it is expected that servo presses will replace traditional presses in the future and become the core of plastic processing equipment.
Analysis of the Development Trend of Presses
In the history of press development, they have been widely used in more developed countries, and stamping manufacturing companies have successively launched presses with various transmission structures and different specifications. China's research and development in this area is not as fast as Japan's, only theoretical research has been conducted in some universities. However, due to the rapid growth of the national economy, market internationalization, and the rise of people's consumption concepts, in response to the streamlined and personalized requirements for manufactured products, various industries have also introduced many foreign manufacturing equipment. Because press products have high precision and a good working environment, and have energy-saving advantages, they are more meaningful to today's domestic energy-saving society and will be recognized and widely used in the near future. It is believed that in the near future, they will replace the role of existing presses in the forming field.
Presses have developed from the following aspects.
1. Traditional large-scale stamping production lines
2. Large drawing depth, depth can reach 320mm, while traditional presses only have 60mm.
3. Slow and uniform speed during sliding stretching work, fast idle stroke running speed, and high production efficiency.
4. Large multi-station presses
The production cycle of the press reaches 16-25 min-1, which is 4-5 times that of the manual feeding production line, with high production efficiency and high product quality. It is currently China's very advanced and efficient sheet metal stamping equipment. Different working mechanisms, general-purpose and technical solutions and structural design methods of presses are proposed. Using the energy storage theory of the constant torque system, the parameters of the press, the total rotational inertia of the motor shaft side, the dynamic acceleration time, and the braking torque are calculated. The press is an old type of forging equipment, but due to its many advantages, especially the great improvements in its transmission method and mechanism in recent years, its performance has also been greatly improved, and it has become one of the main types of forging equipment.
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What are the characteristics of a hydraulic press?
CNC hydraulic oil pumps generally use internal gear pumps, while traditional hydraulic presses generally use axial piston pumps. At the same flow rate and pressure, the noise of an internal gear pump is 5 dB to 10 dB lower than that of an axial piston pump. The motor of a CNC hydraulic press runs at rated speed during pressing and return, and its noise emission is 5 dB to 10 dB lower than that of a traditional hydraulic press. When the slider rapidly descends and is stationary, the servo motor speed is 0, so the CNC hydraulic press has essentially no noise emission.
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Application scope and system selection of small hydraulic presses
Suitable applications for small hydraulic presses include: 1. Punching various silicone and plastic buttons for mobile phones or remote controls, and cutting plastic products; 2. Cutting various protective films for mobile phones, digital cameras, and laptop LCD screens, as well as precision cutting and halving of various pressure-sensitive adhesives and trademarks; 3. Embossing, forming, etc., of various PV, PE, PC and other thin-film switches and panels; 4. Pressing and forming various flexible circuit lines for laptop keyboards, etc. Small hydraulic presses use original Taiwanese or Japanese parts for the hydraulic power system, resulting in fewer malfunctions, high efficiency, low noise, low horsepower requirements, easy maintenance, and convenient adjustment of output, speed, and stroke.
2014-04-29
Technology Daily (Reporter Shi Junbin, Correspondent Jiao Yue) Recently, a 19,500-ton free forging hydraulic press and a 300-ton/750-ton-meter full hydraulic forging manipulator, independently developed by China Heavy Industry Corporation, successfully completed their first hot load test run in Jiangyin, Jiangsu Province. This marks the completion of the world's largest tonnage free forging hydraulic press and the world's largest clamping force/clamping torque full hydraulic forging manipulator currently in operation, achieving a globally advanced level of overall equipment installation. The 19,500-ton free forging hydraulic press adopts a three-beam, four-column, three-cylinder, top-drive, press-insert, full pre-stressed frame structure. Both the upper and lower beams use pre-stressed composite beams. The maximum forging capacity can reach 4
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