In the context of Industry 4.0, CNC shearing machines are replacing many traditional mechanical shearing machines. However, CNC models are further divided into guillotine and swing beam types, leaving many people confused about which to choose. Below, we'll clarify the differences between the two from several key perspectives to help you make a more informed decision.
I. Working Principle
The upper blade of a swing beam shearing machine is fixed to the blade holder, and the lower blade is fixed to the worktable. The blade holder moves in an arc around a fixed axis to complete the shearing action.
The hydraulic cylinders of a guillotine shearing machine are vertically mounted on both sides of the machine. The up-and-down movement of the cylinders drives the blade holder to move vertically, performing a straight cut on the sheet metal.
This difference in principle directly determines their applicable scenarios—the guillotine shearing machine provides more direct vertical shearing force and is suitable for thick plates; the swing beam shearing machine's arc motion is efficient for shearing thin plates.
II. Blade Life
The swing beam shearing machine has 2 cutting edges on the upper blade and 4 cutting edges on the lower blade.
The guillotine shearing machine has 4 cutting edges on both the upper and lower blades. The cutting edges are replaceable, resulting in a longer service life.
The number of cutting edges directly affects the lifespan of the blades. The guillotine shearing machine has more and replaceable cutting edges, resulting in a lower blade replacement frequency under the same workload and a longer overall machine lifespan.
III. Blade Gap Adjustment
Swing shears are equipped with a manual quick-adjustment mechanism, allowing manual adjustment of the gap based on plate thickness and material. However, the shearing angle and gap will change when the blade holder rotates.
Guillotine shears utilize a three-point roller guide structure, with the blade holder moving without backlash against the upper and lower guide rails. The blade gap is electrically adjusted via the system, offering greater convenience and accuracy.
The difference between manual and electric adjustment is significant during frequent material changes. Electric adjustment saves time and provides easier precision control.
IV. Shearing Angle Adjustment
The shearing angle of a swing shear is fixed and cannot be adjusted, limiting its application range and making it unsuitable for thick plates.
The shearing angle of a guillotine shear can be adjusted between 0° and 2°, allowing for adjustments based on different plate materials, offering a clear advantage when processing thick plates.
Adjustable shearing angle means the equipment can adapt to more types and thicknesses of plate materials. This function is particularly useful if you are processing plates with varying thicknesses.
V. Processing and Use
The blade gap of a swing beam shearing machine needs to be manually adjusted, and the shearing angle is fixed. The shearing effect on thick plates is generally average. Its advantage is its low price; if high precision requirements are not needed and the plate thickness is within 8mm, it can be chosen from a cost-saving perspective.
The blade gap of a guillotine shearing machine is electrically adjustable, achieving twice the precision of a swing beam shearing machine. The shearing angle is adjustable, and the integral welded frame undergoes vibration aging treatment, resulting in good rigidity and high precision. For plates thicker than 8mm, a guillotine shearing machine is recommended because the swing beam's principle limits its shearing precision for thick plates. Its disadvantage is higher manufacturing costs and price.
In short, choose a swing beam shearing machine for thin plates and a limited budget; choose a guillotine shearing machine for thick plates and high precision requirements.
VI. Configuration and System
Swing beam shearing machines are typically equipped with the E21S system, which controls the back gauge stroke and blade stroke, and can store 40 programs. Front feeding and pneumatic rear support are optional.
Besides the E21S, guillotine shearing machines are also commonly equipped with systems such as P40 and DAC360S. Structurally, it is often equipped with a servo motor. When using the P40, no separate system is needed for front feeding; the P40 can be used directly for operation.
The upper gate type system offers greater flexibility, and both external configurations are available as options.
VII. Purchase Recommendations
Swing plate shearing machines are suitable for shearing thin plates where high precision is not required, and are relatively inexpensive. If you only need regular use, shearing small thicknesses, infrequent operation, and have a limited budget, a swing plate shearing machine will suffice.
Guillotine shearing machines have a wide range of applications, processing stainless steel, aluminum alloys, and high-strength alloy plates. While slightly more expensive, they offer good value. For shearing large quantities of thick plates with high precision requirements, a guillotine shearing machine is recommended.
Both can handle thin plates, but a swing plate shearing machine may not be able to do everything a guillotine shearing machine can. If you are unsure whether you will need to process thick plates in the future, it is advisable to have sufficient margin for error—buying an undersized or insufficiently functional machine will result in significantly higher replacement costs later than purchasing the right machine initially.
What thickness of sheet metal do you mainly cut? What materials are you cutting? This information will help you more accurately determine which machine model to choose. Welcome to discuss.
