What Is Punch In Machine Tool Industry, Use Introduction, Classification, and Characteristics To Tell You
Knowledge

What Is Punch In Machine Tool Industry, Use Introduction, Classification, and Characteristics To Tell You

The stamping process can make these advantages that cannot be achieved by mechanical processing through various mold applications, so its use is becoming more and more widespread. Today I will introduce you to the definition and characteristics of the punch press.
Published: May 11, 2020
What Is Punch In Machine Tool Industry, Use Introduction, Classification, and Characteristics To Tell You

What is a punch?

A punch press is a stamping press, also one of machine tool. In the production, the stamping process saves materials, energy, and efficiency compared with traditional machining. It has low technical requirements for the operator and can make products that cannot be achieved by machining through various mold applications. The use of is getting wider and wider.

Stamping production is mainly for sheet metal. Through the die, it can make blanking, punching, forming, deep drawing, trimming, fine blanking, shaping, riveting and extrusion parts, etc., which are widely used in various fields.

In our daily life, we often see switches, sockets, cups, cupboards, dishes, computer cases, and even missiles, airplanes, etc., and there are many accessories that can be produced by punching through molds.

Uses and characteristics of punch

Punching machines are widely used in the stamping and forming of hardware parts such as electronics, communications, computers, household appliances, furniture, and transportation, such as automobiles, motorcycles, and bicycles.

It has the following characteristics:

  1. High-rigidity, high-precision frame, welded with steel plates, and after heat treatment, the internal stress of the fuselage is eliminated, so that the equipment can work stably without deformation for a long time.
  2. A load of structural parts is even and the rigidity is balanced.
  3. Stable high precision

    The main parts of the equipment, such as crankshaft, gear, transmission shaft, etc., are hardened and heat-treated after grinding and have high wear resistance. The long-term performance is stable, ensuring the requirements of high precision and stability.

  4. Reliable and safe operation performance

    Because the combined device which is different from the traditional brake has a high sensitivity, coupled with the double electromagnetic control valve and overload protection device commonly used in international high-end equipment, it ensures the accuracy and safety of the high-speed movement and stops of the punch sliders.

  5. Production automation, labor-saving, and high efficiency

    The punch can be matched with the corresponding automatic feeding device, with feeding error detection, pre-cutting and pre-breaking devices, which can fully realize automatic production, low cost and high efficiency.

  6. Slider adjustment mechanism

    The quick adjustment is divided into manual adjustment and electric adjustment, which is convenient, reliable, safe and fast, and the accuracy can reach 0.1mm.

  7. Novel design and environmental protection

    Using advanced technology and design concepts from Japan, it has the advantages of low noise, low energy consumption and no pollution.

Classification of Punch

According to the driving power, it can be divided into:

(1) Mechanical Power Press (2) Hydraulic Press

For ordinary sheet metal stamping, most of them use mechanical punching machines. Hydraulic presses are different depending on the liquid used. There are hydraulic presses and oil presses. The majority of oil presses are used. Hydraulic presses are mostly used for giant machines or special machines.

According to the slider drive structure, it can be divided into:

(1) Crank Press
Presses using crankshaft mechanisms are called crankshaft presses. The reason why the crankshaft mechanism is used the most is that it is easy to make, the end position under the stroke can be correctly determined, and the movable curve of the slider is basically used for various processing. Therefore, this type of stamping is actually used for punching, bending, stretching, hot forging, warm forging, cold forging, and almost all other punching processes.

(2) Crankless Press
Crankless presses are also called eccentric gear presses. The functions of crankshaft presses and eccentric gear presses are measured. The eccentric gear presses are superior to crankshafts in terms of shaft rigidity, lubrication, appearance, and care. But the disadvantage is the higher price. When the operation time is longer, the eccentric gear punch is more advantageous, and the operation time of the special punching machine is shorter, the crankshaft punch is better. Therefore, the small machine and high-speed punching punch are also the fields of crankshaft punch.

(3) Knuckle Press
Those who use the toggle mechanism on the slider drive are called toggle punches. This type of punch has a unique slider motion curve where the speed of the slider near the bottom dead center becomes extremely slow (as measured by the crank press). And it also correctly determines the position of the dead point under the stroke. Therefore, this punch is suitable for compression processing such as embossing and finishing and is currently used mostly in cold room forging.

(4) Friction Press
Presses that use friction transmission and screw mechanisms on the track drive are called friction punches. This type of punch is most suitable for forging and crushing operations. It can also be used for bending, forming, stretching, etc. It has a versatile function. Because of its low price, it was widely used before the war. Because of the inability to determine the end position under the stroke, poor processing accuracy, slow production speed, excessive load when the control operation is wrong, and the need for skilled technology in use, it is gradually being eliminated today.

(5) Screw Press
Those who use the screw mechanism on the slider drive mechanism are called screw punches (or screw punches).

(6) Rack Press
The rack and pinion mechanism used on the slider drive mechanism is called a rack type punch. Spiral punches have almost the same characteristics as rack punches, and their characteristics are almost the same as those of hydraulic punches. It used to be used to squeeze bushings, debris and other items for extrusion, oil extraction, packing, and cartridge casing extrusion (hot-press extrusion processing), etc., but today it has been replaced by hydraulic presses unless extremely special Is no longer used outside of the situation.

(7) Link Press
Presses that use various link mechanisms on the slider drive mechanism are called link-type punches. The purpose of using the link mechanism is to reduce the cycle of the processing while maintaining the stretching speed within the limit during the extension processing and use the reduction of the speed change of the extension processing to speed up the approaching stroke and from the top dead center to the processing start point. The speed of the return stroke from the bottom dead center to the top dead center makes it have a shorter cycle than the crank press to improve productivity. This type of punch has been used for the deep extension of cylindrical containers since ancient times. The bed surface is narrow, but it is used for the processing of automobile body panels and the bed surface is wide.

(8) Cam Press
A punch press using a cam mechanism on the slider drive mechanism is called a cam punch press. The characteristic of this kind of punching machine is the cam shape which is made properly, so as to obtain the desired slider moving curve easily. However, due to the nature of the cam mechanism, it is difficult to convey greater force, so the punching capacity is very small.

Published by May 11, 2020 Source :kknews

Further reading

You might also be interested in ...

Headline
Knowledge
Precision in Rotation: Indexing Plates in Metal Machining
Rotary Indexing Plates are precision components of milling machines that facilitate the precise angular positioning of workpieces and cutting tools. They are used in both metal machining and woodworking, and while they share a fundamental purpose, there are notable differences in their design, capabilities, and applications due to the distinct characteristics of the materials and processes involved.
Headline
Knowledge
Sheet Metal Fabrication Machines: An Overview
Sheet metal machines are widely used in various manufacturing industries for shaping, cutting, and forming sheet metal into different components. Some of the industries that extensively utilize sheet metal machines include light industries such as electrical and medical equipment, all the way up to heavy industries such as automotive, rail, oil and gas, as well as wind power generation.
Headline
Knowledge
The Significance of Planing Machines in the Machining Tool Industry
Metal and wood planing machines are essential tools in the machining industry. Wood planers use a rotating cutterhead equipped with sharp blades to smooth and size workpieces, ensuring uniformity in woodworking projects. Metal planers use a cutting tool mounted on a reciprocating tool head to remove excess material from metal surfaces, achieving precise dimensions in components. Both types of planning machines enhance efficiency, precision, and the overall quality of finished products. Understanding the key features of the various types of planing machines will help you choose the right machine best suited for your machining needs.
Headline
Knowledge
Stamp Press Technology and Manufacturing in Taiwan
Nestled in the heart of East Asia, Taiwan has emerged as a powerhouse in the global stamp press industry, with a robust manufacturing ecosystem, and cutting-edge technology. With a rich manufacturing tradition and a focus on precision engineering, Taiwanese companies meet the demands of diverse sectors, ranging from electronics and automotive to medical devices and aerospace, supplying high-quality stamp press solutions to a diverse range of markets worldwide.
Headline
Knowledge
Introduction to Stamp Press Technology
Stamp press technology, also known as stamping or pressing, is a manufacturing process that utilizes a press to shape or cut materials into desired forms. This process involves the use of a die and a punch to form or cut the material, creating intricate shapes with high precision. Widely employed for mass production due to its speed, accuracy, and repeatability, this process is a crucial part of modern manufacturing.
Headline
Knowledge
Mechanical Reducers in Industrial Manufacturing
Speed reducers are powerful mechanical devices generally used in machining tools to multiply the force or torque generated by an input power source, thereby increasing the usable force, enhancing the performance and precision of the machining tool. They are also used in material handling systems such as conveyor belts and lifting mechanisms to control the speed of material transfer and manage heavy loads efficiently. By multiplying the available output force, they enable the use of a reduced input power source, resulting in cost savings for machine tool investments. When choosing the appropriate speed reducer, the torque, speed, and horsepower of the input, as well as the mounting configuration, efficiency, and required lifetime all need to be considered. The quality of the machine chosen will also be reflected in the amount of backlash, transmission error, torsional rigidity, and inertia experienced during machining.
Headline
Knowledge
Introduction to Stamp Press Technology
Stamp press technology, also known as stamping or pressing, is a manufacturing process that utilizes a press to shape or cut materials into desired forms. This process involves the use of a die and a punch to form or cut the material, creating intricate shapes with high precision. Widely employed for mass production due to its speed, accuracy, and repeatability, this process is a crucial part of modern manufacturing.
Headline
Knowledge
Innovations in Sawing Technology
The traditional image of saws as just cutting tools is being reshaped by cutting-edge advancements that integrate automation and robotics in sawing technologies, paving the way for greater precision and efficiency of sawing technology in manufacturing.
Headline
Knowledge
The Fundamentals of Drilling Machines
Drilling machines play a pivotal role in the manufacturing industry, using rotary motion to create precise holes in a variety of materials. Whether it's metal, wood, plastic, or composites, drilling machines are versatile and essential for producing components in countless applications.
Headline
Knowledge
Hybrid Milling in Manufacturing: Integrating Additive and Subtractive Processes
The integration of additive manufacturing (AM) and subtractive milling processes has emerged as a transformative manufacturing process known as hybrid milling. This technique combines the strengths of both 3D printing and traditional subtractive milling, opening up new possibilities and diverse applications for creating complex geometries with improved material efficiency.
Headline
Knowledge
Features and Mechanics of Industrial Saws
Industrial saws shape raw materials into precise components that form the backbone of countless products. Understanding the mechanics of sawing, examining the fundamental principles, cutting mechanisms, and essential aspects of safety and maintenance will ensure the most efficient and safe operation of industrial saws.
Headline
Knowledge
Understanding the Diversity of Industrial Saws
Industrial saws play a pivotal role in processing a wide range of materials with precision and efficiency. Taiwan is a major supplier of industrial saws to the automotive, aerospace, and construction, as well as the metal fabrication industries. This article aims to provide a comprehensive understanding of the diverse industry of industrial saws, exploring their types, structures, applications, and the crucial role they play in various industries.
Agree