what History of cycle.

The history of the cycle, also known as the bicycle or bike, dates back to the early 19th century. Here is a brief overview of its history:

1)  Early Developments: The concept of a human-powered machine with wheels can be traced back to Leonardo da Vinci's sketches in the 15th century. However, it wasn't until the 19th century that significant developments were made.

2)  Laufmaschine and Draisine: In 1817, Karl Drais, a German baron, invented the Laufmaschine, also known as the Draisine or "running machine." It had two wheels in line and was propelled by the rider pushing off from the ground with their feet.

3)  Pedal Bicycle: In the 1860s, the next major development occurred with the addition of pedals and cranks to the front wheel. This design, known as the pedal bicycle or velocipede, allowed riders to propel themselves using the pedals instead of the ground.

4)  Penny-Farthing: The next significant advancement was the Penny-Farthing or high-wheel bicycle, which became popular in the 1870s. It had a large front wheel for greater speed, but its design made mounting and dismounting challenging.

5)  Safety Bicycle: The safety bicycle, introduced in the late 1880s, resembled the modern bicycle more closely. It had two wheels of the same size, a chain drive system, and a lower center of gravity, making it safer and more comfortable to ride.

6)  20th Century Innovations: Throughout the 20th century, bicycles saw various technological advancements, including the addition of gears, coaster brakes, pneumatic tires, and lightweight materials like aluminum and carbon fiber.

7)  Modern Bicycles: Today, bicycles come in various designs, including mountain bikes, road bikes, hybrid bikes, and electric bikes. They continue to evolve with features such as disc brakes, suspension systems, and electronic shifting.

Bicycles have played a significant role in transportation, recreation, and sports, and continue to be popular worldwide for their efficiency, eco-friendliness, and health benefits.

How is the work of metal laser cutting machine.

A metal laser cutting machine uses a high-powered laser beam to cut through various types of metal materials. Here is a general overview of how a metal laser cutting machine works:

1). Setup: The operator sets up the metal laser cutting machine by loading the metal workpiece onto the machine's cutting bed or table. The workpiece is securely clamped in place to prevent movement during the cutting process.

2). Programming: The desired cutting pattern or design is programmed into the machine's control system. This can be done manually or using computer numerical control (CNC) programming.

3). Laser Beam Generation: The laser cutting machine generates a high-powered laser beam using a laser source, such as a CO2 laser or a fiber laser. The laser beam is directed through a series of mirrors and lenses to focus the beam to a small spot size.

4). Cutting Process: The focused laser beam is directed onto the surface of the metal workpiece. The intense heat of the laser beam rapidly heats and melts or vaporizes the metal at the point of contact. Simultaneously, a stream of assist gas, such as nitrogen or oxygen, is blown onto the cutting zone to help remove molten material and facilitate the cutting process.

5). Motion Control: As the laser beam cuts through the metal, the machine's motion control system moves the cutting head along the programmed cutting path, following the desired shape or pattern. This can be achieved through the use of linear motors, stepper motors, or servo motors.

6). Cutting Accuracy: Metal laser cutting machines offer high precision and accuracy, allowing for intricate and precise cuts. The cutting parameters, such as laser power, cutting speed, and assist gas pressure, can be adjusted to achieve the desired cut quality and edge finish.

7). Cool Down and Removal: Once the cutting process is complete, the laser beam is turned off, and the machine's cooling system cools down the workpiece to prevent distortion or warping. The cut metal pieces are then removed from the machine's cutting bed.

Metal laser cutting machines offer several advantages, including high cutting speeds, minimal material waste, and the ability to cut complex shapes and designs. However, it's important to note that laser cutting machines require proper training and safety precautions to ensure the operator's safety and to achieve accurate and high-quality cuts.

The History of laser cutting machine.

The History of laser cutting machine 

The history of laser cutting machines dates back to the early 1960s when the first laser was developed. Here is a brief overview of the history of laser cutting

1).     Invention of the Laser: The concept of laser cutting originated from the invention of the laser itself. In 1960, Theodore Maiman, an American physicist, developed the first working laser using a synthetic ruby crystal. This breakthrough in laser technology paved the way for various industrial applications, including laser cutting.

2).    Development of CO2 Lasers: In the early 1970s, researchers discovered that carbon dioxide (CO2) lasers had the potential to produce a high-power continuous wave beam, making them suitable for industrial cutting applications. CO2 lasers utilize a mixture of carbon dioxide, nitrogen, and helium gases to generate the laser beam.

3).   Introduction of Laser Cutting: The concept of using lasers for cutting materials was first introduced in the late 1960s. In 1967, Peter Houldcroft, a British scientist, demonstrated laser cutting by using a CO2 laser to cut a hole in a diamond. This demonstration showcased the potential of lasers in precision cutting applications.

4).    Advancements in Laser Cutting Technology: Throughout the 1970s and 1980s, laser cutting technology rapidly advanced. New CO2 lasers were developed with higher power outputs, allowing for faster and more efficient cutting. Researchers also worked on improving beam quality, focusing systems, and control software to enhance the precision and versatility of laser cutting machines.

5).    Industrial Adoption: By the 1990s, laser cutting had become a popular industrial process. Companies in various industries, such as automotive, aerospace, and electronics, began using laser cutting machines for their fabrication and manufacturing needs. Laser cutting offered several advantages over traditional cutting methods, including higher speed, accuracy, and the ability to cut a wide range of materials.

6).   Continuous Innovations: Over the years, advancements in laser technology and machine design have further improved laser cutting capabilities. Solid-state lasers, fiber lasers, and diode lasers have been developed as alternatives to CO2 lasers, offering new possibilities and higher performance in laser cutting machines. Continuous advancements in control systems, automation, and software have also resulted in more efficient and versatile laser cutting processes.

Today, laser cutting machines are widely used in numerous industries for precision cutting of various materials, such as metals, plastics, wood, and fabrics. The technology continues to evolve, with ongoing research and development aimed at further enhancing cutting speed, quality, and the range of materials that can be cut using lasers.