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Buying a press brake machine can be a difficult decision. There are many different types of press brakes available in the market. Every type comes with further configuration. This can lead to confusion among even professional operators. This article will provide a complete guide for buying a press brake. You will know about the factors to focus on and the pitfalls to avoid. Based on the information presented here, you can make a correct decision and get complete value for your investment. Primary Factors to Consider When Buying a Press Brake. Choose a press brake based on the particular factors that apply to you:
- Tonnage Capacity: Tonnage capacity relates to the force that a press brake machine can apply. A higher force means the ability to bend a thicker material. Choose a tonnage capacity that can easily bend the metal in your particular application.
- Bending Length: Bending length relates to the maximum length of the workpiece that a press brake can bend. The bending length of the machine depends on your particular applications. You require a long bending length if you intend to make large-scale metal parts.
Type of Press Brake
There are many different types of press brake machines. Each of these comes with its own set of advantages and limitations. You can choose the right press brake based on your use case. These different types of press brakes are:
- Mechanical Press Brake: The mechanical press brake is the most basic type of press brake. It is based on a flywheel and clutch mechanism. Electric motors power the flywheel clutch assembly. Mechanical press brakes have a large tonnage capability. They can easily bend three times their rated capacity. Additionally, they have a simple build leading to simpler maintenance. However, a major drawback of these brakes is their inability to stop midway. Once a cycle starts, the ram will complete the entire cycle motion.
- Hydraulic Press Brake: The hydraulic press brake uses the dynamics of water pressure to create the force for the bending. There are multiple hydraulic oil cylinders to provide various bending settings. This provides a greater number of options and adds to the bending precision. However, a hydraulic press brake is highly sensitive. Their operation should never exceed the rated tonnage value. Additionally, there is the risk of fluid leaks from the cylinders.
- Electro-hydraulic press brake: Electro-hydraulic press brakes use multiple servo brakes to move the bending ram. The servomotors provide accurate control over the bending angle. However, electro-hydraulic press brakes have severe limitations in tonnage capability. Additionally, electro-hydraulic press brake does not perform well for high volume production. It is also known as a CNC press brake machine.
- Hybrid Press Brake: Hybrid press brakes combine the operation of hydraulic press brakes and electric press brakes. These machines have automatic start and stop operation. Additionally, replacement of electric motors with hydraulics provide a higher bending force. However, they require complex maintenance in case of a breakdown.
- Pneumatic Press Brake: Pneumatic press brakes replace oil cylinders with air. Compressed air can provide a high bending force necessary for most materials. These brakes have a lower bending prowess compared to hydraulic press brakes. However, there is no risk of fluid leakage in the operation.
- Box and Pan Brake: A box and pan brake is also known as a finger brake. These press brakes are simpler than other alternatives. They are used for small-scale application of bending thin sheet metal. They are named so because their main application is manually bending metal sheet for making boxes and pans.
- Tandem Press Brake: A tandem press brake involves a setup of multiple individual press brakes. These press brakes are interconnected for a synchronized operation. A Tandem press brake is useful for bending a very long metal sheet. If a single press brake cannot fulfill your requirements, ensure that the press brake you choose has a tandem configuration.
- Robotic Press Brake: A robotic press brake is a sheet metal bending solution with high automation. A robotic press brake is a great fit for fulfilling large production numbers. It can reduce the cost of production significantly for mass production of parts. However, these machines require frequent maintenance and good operator skill.
Important Safety Measures For Press Brake
Safety measures won’t affect press brake operation. However, they will eliminate any probability of potential injury. Some of the important safety measures for press brakes are:
- Emergency Stop: There are many instances where a press brake operation can require an urgent stop. Ensure that your machine comes with an emergency stop feature.
- Guards: Guards ensure that any human organ such as the limb does not come under the machine during operation. These guards are usually physical barriers that eliminate human interference. Modern machines come with light sensors that stop machine operation if an object like a limb comes under the machine tool during operation.
- Interlocks: Interlocks ensure that the machine executes operation only if all the safety measures are fulfilled. For instance, leaving the guards open might halt machine operation until the guards are fully closed.
- Warning Signs: Warning signs on the machine indicate potential hazards with the machine. For instance, the electrical coverings of the machine should have electricity hazard signs. The gearing can have signs indicating potential working injury.
- Anti-Repeat Control: Anti-repeat controls ensure that multiple accidental presses of the pedals do not lead to multiple operations.
- Two-handed Control: Two-handed control eliminates accidental operation of the machine. The operator must use both hands to execute the press brake operation.
- Lockout: The lockout feature puts the machine to a complete standstill. This ensures that the machine is not started when it is in maintenance or repair mode.
- Safety Training: Manufacturers should ensure that the operator has sufficient safety training on the machine and its protocol.
Adange
- High dynamic for higher productivity of the machine.
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- Energy efficiency of up to 35 % compared to conventional systems.
- Operating cost is min due to low energy consumption. Thus, it gives advantages to the user with high efficiency & low operation cost.
