Duty Shear

Daily maintenance
Before each start-up, add lubricating oil on time, at fixed points, and in fixed quantities according to the lubrication chart. The oil should be clean without sediment. The machine must be kept clean frequently, and rust-proof grease should be applied to unpainted parts.
10 minutes before getting off work every day, lubricate and clean the machine. Clean the machine every week, and add lubricating oil to each guide surface, sliding surface, ball, and lead screw.
 

Regular inspection
Regularly check the straightness and axial clearance of the lead screw. If it exceeds the tolerance or is too large, replace or adjust it in time. Regularly check whether the v-belt, handle, knob, and buttons are damaged. Those with severe wear should be replaced in time.
Regularly inspect and repair switches, fuses, and handles to ensure their reliable operation. The lubricating oil in the motor bearing should be replaced regularly, and check whether the electrical parts work normally.
 

Blade maintenance
Regularly check the wear of the blades. Dull blades should be sharpened or replaced in time. Stop the machine first when replacing the blade, and ensure that the new blade is installed securely.
 

Other key points
Strictly follow the operating procedures and eliminate illegal operations. Keep the working environment clean and clean up the cutting waste in time. Turn off the power when leaving the machine for a long time to prevent non-professionals from operating.
If there is any abnormality during operation, press the emergency stop button immediately and troubleshoot the cause of the fault. 

Frame
The frame provides the structural support and stability to the entire machine. It is usually made of heavy-duty steel or cast iron to handle the forces generated during the shearing process.
 

Bed
The bed is a flat, horizontal surface where the material to be cut is placed. It is typically equipped with scales, guides, and squaring arms to assist in precise positioning and alignment of the workpiece.
 

Upper and lower blades
The duty shear consists of two blades, an upper blade and a lower blade, which perform the cutting operation. The upper blade is mounted on a moving ram or beam, while the lower blade is fixed to the bed or the machine frame.
 

Hold-down device
The hold-down device is used to secure the workpiece firmly against the bed during the shearing process. It prevents any movement or lifting of the material, ensuring accurate cutting.
 

Drive system
The drive system provides the power to move the upper blade and perform the cutting action. It typically consists of an electric motor, flywheel, gears, and a clutch. The motor provides rotational power, which is transmitted to the flywheel and then converted into linear motion to move the upper blade.
 

Back gauge
The back gauge is an adjustable stop or fence located behind the cutting area. It helps in setting the desired cutting length by accurately positioning the workpiece before shearing.
 

Control panel
The control panel houses the electrical controls and switches for operating the duty shear. It allows the operator to control the cutting cycle, adjust settings, and monitor various parameters such as blade clearance, cutting length, and speed.
 

Safety features
Duty shears are equipped with safety features to protect the operator and prevent accidents. These may include safety guards, emergency stop buttons, foot pedals, and interlocking systems that disable the machine when accessed or opened. 

Regardless of the type of duty shear used, the process generally involves the following steps: The metal sheet is placed on the machine's cutting bed, and the backgauge is set to the desired cutting length.

The hold-down mechanism is engaged to secure the metal sheet in place. The blade is lowered onto the metal sheet, applying high force to cut through the metal.

The blade is retracted, and the metal sheet is removed from the cutting bed. Duty shears are highly efficient and can cut large quantities of metal sheets quickly and accurately. However, like any machine, they require proper maintenance and safety precautions to ensure they operate effectively and safely. It's important to follow the manufacturer's instructions and guidelines when operating a duty shear to avoid accidents and damage to the machine.

Our company has been through professional quality system certification, CE certification, SGS audit and as a member of the China national resources recycling association. Machine main core parts, use Germany Siemens motor, France Schneider electric, USA KK pressure gauge, USA parker valve, Germany Rexroth valve, Pikes high-pressure hose. Technology and performance of our products has reached the industry leading level, and has won the trust of the customers. Our company is a professional design and manufacture company of hydraulic machinery. We are a backbone company in manufacturing all kinds of hydraulic equipment and metal machineries in domestic.