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An eccentric press is a machine that works metal through bending, cutting, drawing, and punching operations. It exerts pressure on the workpieces with its ram, which makes the workpiece deformed. In an eccentric press machine, the driving mechanism that moves the ram to carry out these operations is an eccentric mechanism. There are two types of eccentric presses, namely the single- and double-gear eccentric pressing machine. They work differently and achieve varying production capacities.
Single gear block eccentric press:
An eccentric press with a single gear block can be easily recognized. The driving mechanism has only one gear block. This type of pressing machine has fewer moving parts, which reduces friction and wear. Gear blocks directly transfer energy from the motor to the clutch and flywheel. Therefore, this pressing machine achieves high torque at a lower speed. It’s easier to maintain a single gear block eccentric press, and it consumes less energy. However, the production speed is not as high as double gear block eccentrics.
Double gear block eccentric press:
The double gear block eccentric press has greater production capacity than the single gear block. The driving motor has two gear blocks, which move the ram faster. This means the workpiece goes through the pressing operation more quickly. More moving parts in a double gear block may lead to greater wear and tear. It’s also more difficult to maintain and clean.
Most modern eccentric presses are designed with flywheels. The job of the flywheel is to store energy. They are disk-shaped mounted on the output shafts of the motor. The shaft moves quickly and transfers energy to the workpiece that is harder to press or deformed. The flywheel spins fast to give the pressing operation the necessary power, thus increasing productivity. The flywheel serves an important role during cutting or stamping because they take split-seconds to accomplish the job, but the pressing machine takes longer to rotate.
The precision eccentric press machine specifications and maintenance are as follows:
Capacity and tonnage:
Its capacity ranges from 20 to 2000 tons. The capacity is the amount of weight the machine can carry. The higher the capacity, the bigger, and heavier the machine is.
Worktable size:
The size of the worktable is 200 mm x 320 mm to 700 mm x 900 mm. A bigger worktable allows it to accommodate larger materials.
Spindle diameter:
Spindle diameter can range from 20 mm to 120 mm. It allows the clamping tools or workpieces to hold and rotate.
The stroke:
The stroke describes how far the ram travels in one cycle. Its length ranges from 30 mm to 500 mm. The long stroke presses a larger workpiece.
The day light:
Daylight is the vertical distance between the worktable and ram. It ranges from 100 mm to 300 mm. The high daylight makes it easy to install the dies and molds.
Motor:
It has a direct connection motor or belt transmission motor. The power of the motor ranges between 2 kw to 15 kw. It changes the weight and speed of the machine workings.
Following these tips can prevent machine wear and tear, breakdown, and injuries:
Automotive Industry:
In the automotive industry, a precision eccentric stamping press can be used to make automotive parts, such as dashboards, body panels, brackets, and wheel covers. The tool can also create other components, like housing, shafts, and rotors, which are parts of cars' engines. Some precision eccentric presses can also be used to trim glass in the automotive industry.
Electronics Manufacturing:
In electronics manufacturing, a precision eccentric stamping die can be used to make electronic components like connectors, switches, relays, and printed circuit board (PCB) parts. It can also be used to fabricate enclosures, housings, and mounting brackets for electronic devices.
Jewelry Making:
Precision eccentric stamping presses can be used to create intricate designs and patterns in metal jewelry pieces. Jewelry makers and artisans can use the precision stamping presses to shape or emboss and prototype jewelry products.
Aerospace Industry:
The aerospace industry involves the design, development, and manufacturing of aircraft, spacecraft, satellites, and related systems. The aerospace industry has high standards for precision, quality, and safety. A precision eccentric stamping die is commonly used in the aerospace industry to make brackets, housings, turbine blades, and structural components of aircraft and spacecraft.
Medical Device Manufacturing:
A medical device is any device used for medical purposes. A precision eccentric stamping die can be used to fabricate medical device components such as surgical instruments, diagnostic equipment parts, implants, and catheter and stent components.
Business buyers should start by considering the materials and components used in the construction of a machine. They should go for the ones built with premium materials. Such machines usually have incredible longevity and are less vulnerable to damage. Business buyers should also prioritize machines with powerful motors. The motor's strength and torque determine the pressing power of an eccentric press machine. In this case, it would be best for buyers to choose machines with high torque and variable-speed motors to offer flexibility in various applications.
Business buyers should also look at the control features of a precision eccentric press machine. They would want to choose machines with advanced control features. Machines with advanced control features allow operators to adjust the force and speed of the press for greater precision and control. Additionally, buyers should consider the safety features of the eccentric press. This includes guards, emergency stop buttons, and overload protection. They should choose machines with robust safety features to protect their workers and reduce the risk of accidents.
Buyers should choose an eccentricity press that is suitable for their specific application. Such a machine should have the ideal size, shape, and pressing force required for the job at hand. Buyers should also consider the punch types an eccentric press uses. They should choose types that can accommodate the punches they typically use for their applications. If training is necessary for the effective use and maintenance of the press machine, buyers should ensure that the supplier offers training services.
Finally, buyers should consider an eccentric press machine's maintenance and servicing requirements. They should choose machines that are easy to maintain and service so they can minimize downtime and maximize productivity.
Q1: What materials are suitable for a precision eccentric press?
A1: Generally, precision eccentric presses are suitable for processing various metal materials, such as carbon steel, stainless steel, aluminum alloy, copper, etc. However, as mentioned before, every material has its limitations. In this case, a machine with greater impact force and pressure must deal with high-density materials like titanium.
Q2: What are the benefits of eccentric press machines compared to other types of presses?
A2: Eccentric precision presses excel in providing greater force, adaptability, cost-effectiveness, efficiency, and production capacity. They are also versatile, catering to diverse industries. Lastly, they handle heavy-duty tasks with ease.
Q3: How long does it take to set up an eccentric press machine for a specific task?
A3: Setting up an eccentric press can take anywhere from 30 minutes to a few hours, depending on the complexity of the task.
Q4: Are precision eccentric presses automated?
A4: While most eccentric presses are manual, automated models exist.
Q5: Is there aftermarket support for a precision eccentric press?
A5: Yes, many manufacturers offer aftermarket support in the form of replacement parts and repairs.
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