Metal Shear

Your Professional Metal Shear Manufacturer!

Professional Company
Henan Caipuli Machinery Equipment Co., Ltd is in the beautiful city of Jiaozuo. Through years of development, the company has specialized in manufacturing scrap metal processing equipment. Thanks to our strong technical strength, advanced test method as well as fully auxiliary equipment, the company kept increasing its market competitiveness.

Wide Products
Our products which fall into several categories, alligator metal shear, hydraulic metal shear, briquetting press, heavy-duty baling shear, cardboard /wool/fabric/wastepaper/hay /drum baler, and large-scale shredder line. We have exported to Australia, Malaysia, South America, the Philippines, Russia, Vietnam, Iran, Ukraine, Palestine, and other countries.

Reasonable Price
Our company is devoted to offering quality products at reasonable prices. We aim to supply competitive prices for every client, to help clients have a price advantage in their local market.

Good Service
We promise not only to provide the buyer with qualified new products but also to provide high-quality services. We work closely with our customers to understand their needs and provide tailored solutions to meet their requirements. With our expertise in products, we can help you achieve your goals and bring your products to market.

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What Is A Metal Shear?

A carbon fiber Metal Shear is a cylindrical structure made from carbon fiber composite material. Carbon fiber tubes are constructed using layers of prepregs (pre-impregnated carbon fiber fabric) that are cured under heat and pressure. These tubes are engineered for exceptional strength, stiffness, and lightweight performance. Carbon fiber Metal Shears find applications in various industries and structural fabrications.

Why Do We Need Metal Shear?

Unlike other metal-cutting methods, shearing provides a more accurate cut to a flat sheet of metal. The control and power are unparalleled, so the work is quick and relatively easy. And depending on the type of shear you use, you’ll be able to get even more intricate shaping done as your project requires. And unlike other cutting techniques that rely on heat, your metal will experience no melting or burning. There will also be less material loss during the processing.
Shears are also quite durable and can put out large volumes of cut metal without failing. The process is also very fast, so less time needs to be spent on the cutting process itself.

Different Drive Systems of Metal Shear

When you are selecting that shear one of the choices you have to make is the drive, or power systems behind it. Different drive systems are available to meet different demands of production and different cost structures.

Manual Shears
Manually operated shears, sometimes called “stomp’ shears are for the lightest gage materials in the metal working market. Common in HVAC and roofing the Stomp HSear is a low production light machine primarily used on only 18 Gage and Thinner.

Air Operated
Although pneumatics do not increase a shears capacity greatly, a pneumatically driven shear does reduce operator fatigue and allows for operating a metal shear at a quicker rate.

Electric Shears
Electric shears adre shears that are driven simply by electrically methods without the advantages of flywheels to increase inertia, and thereby Tonnage/Force. These shears can work down into the 12-14 Gage range of steels and provide a quiet, smooth and very fast operation.

Hydraulic Shears
Hydraulics are the next preferred method in driving the shearing blade. Used primarily in 14 Gage shears and thicker hydraulics are easy to produce, place and service and are far less expensive than thenir mechanically driven counterparts however they can lack the speed and durability of other systems.

Mechanical Shears
If you're looking for the best production rated, longest lasting and shock absorbing design in shearing, it definitely is a Mechanical shear. Mechanical shears are simpler, quieter, faster, and run cooler and are designed to run all day, every day. These are the shears of choice for heavy duty production demands, like steel service centers.

Types of Metal Shearing

In a typical factory shearing process, the metal to be cut is held in place with hold-downs. The cuts are positioned by a squaring arm with scale on it or with a back gauge. Other angles are possible with an angle gauge. On some sheet metal shears, and most plate shears, the blade gap is adjustable for different metal thicknesses.
Metal is placed between two blades: one upper and one lower blade, like a pair of shears. One of the blades will generally remain stationary. Specific types of metal shearing include:

Accurshear
The Hydraulic Sheet Metal Shear Machine Accurshear is the most accurate machine available of this type, so you will receive the highest quality metal shearing services. The Accurshear is used for cutting sheet metal, plate, aluminum, and stainless steel with a clean straight cut with minimum waste.

Guillotine Shearing
Straight shearing is perfect for working with metal coils, sheet metal, and plates. This process is done with a guillotine shear, which can be hand powered or foot powered for ease of use. The metal is held in place with a ram, while a moving blade slices by a fixed blade to shear the metal. You can increase or decrease the force by adjusting the angle of shearing. For smaller projects that require intricate cuts, this is the best option.

Bench Shearing
A bench shear is an effective tool for cutting large to medium sizes of metal for all manner of projects. Although the bench shearing method is usually not best for delicate work, it is a great option when you need clean cuts that are quick and free of all burrs.

Alligator Shearing
Alligator shears are used for cutting scraps or long metal stocks. This process is often used for results that do not require high levels of accuracy, but need to be done in a quick and efficient manner. Alligator shears allow you to cut and shape pieces of metal that could otherwise only be cut by a torch, giving you cleaner cuts and better results.

Advantages of Hydraulic Shears

While its working speed is slower than a mechanical shear, a hydraulic shear can be continuously operated, making it perfect for high production facilities (mechanical shears need to rest between batches of cutting). They are also usually more compact than their mechanical equivalents, saving shop space.

Accuracy
Hydraulic shears are extremely precise machines with greater accuracy than most mechanical shears. In addition, many hydraulic shears provide for precise adjustments, such as an adjustable rake angle for cutting thinner materials with less twist, or a variable stroke length, which is helpful when short strokes are needed for shearing very narrow material (unlike mechanical shears, which must make a full cycle when cutting). The blade clearance on hydraulic shears can also usually be adjusted very quickly and easily, an improvement over the more difficult and time-consuming process for mechanical shears.

Capacity
While a mechanical shear can deliver a very fast, powerful downstroke, the cylinders on a hydraulic shear can generate a large amount of pressure, allowing thicker plates—specifically those ranging from 3/8″ to 1″—to be easily sheared, depending on the model of machine. Hydraulic shears are also the better option for longer workpieces.

Operation
Hydraulic shears, while more complicated, are designed in a way that allows a trained operator to run and maintain them with ease. Their operation is much smoother than mechanical shears.

Safety
While mechanical shears can be stopped in a cycled downstroke in case of a hand or other object crossing into the cutting zone, hydraulic shears can be set to automatically reverse when stopped. Coupled with a light curtain, hydraulic hold downs and proper guarding, hydraulic shears can be considered safer than mechanical ones. In addition, hydraulic shears are usually equipped with hydraulic overload protection to reduce damage to the machine itself when encountering an obstruction or an oversized workpiece or an overly hard material. If the maximum PSI is reached, a safety valve releases, stopping the shearing action.

How to Use a Sheet Metal Shear?

Protection
Make sure to put on your protective equipment because you will be working with steel and it can be dangerous. Metal shavings can become airborne and cause severe injury.

Power up the Metal Shear
Plug in the equipment and turn it on. Check the bed of the sheet metal shear and make sure that there is nothing on it like dirt or any material that could get in the way of cutting the metal. If there’s some debris on it, turn off the shear and clean it first. Once you’ve cleaned it you can begin again.

Cut the Metal
Place the sheet metal on the bed of the shear. Be careful, because it is already running at this point, and make sure not to get in contact with the blade. This goes for the sheet metal, as well. You will then find a back gauge on the sheet metal shear and adjust it in order to cut the metal about a half inch larger than the target size.

Cut the Other Sides of Metal
Turn the metal 90° and set the side that was just cut on the squaring bar on the bed. Place the tape measure of the shear at the end of the metal and pull it across to define a measuring system. Now make a measurement that is one inch longer than that of your final target length. Set the metal against the squaring bar and step on the pedal of the sheet metal shear. The sheet metal will then be cut.

Repeat Step 4
Turn the metal sheet again and set it on the squaring bar. Do the same things that were done in the previous steps until you get the target measurement of your sheet metal.

Check the Output
Remove the sheet metal from the bed and inspect it, checking to see if it is of the right size. If there are still irregularities in the measurements and shape, put it back on the bed and repeat Step 4. Once the sheet metal has been sheared perfectly, remove from the bed and set it aside.

Clean and Store
Now that it has completed its task, you should shut down the machine and set it aside properly. Turn off the main power switch of the equipment. Clean the bed of any dirt and contaminants. Carefully clean the blade with a brush to remove any metal shavings. Unplug it from the socket and roll up the cord and set it aside. Cover the sheet metal shear with a waterproof material to prevent it from getting wet and accumulating rust.

Precautions When Operating a Shearing Machine

Before delving into the maintenance aspect, it’s crucial to highlight some essential precautions that should be taken when operating a shearing machine to ensure the safety of your workforce and the longevity of your equipment.

Check All Coverings and Safety Features Regularly
The cornerstone of safety in shearing machine operation lies in regular inspections of safety covers, emergency stop buttons, and other safety features. Any damaged or malfunctioning safety components should be repaired or replaced immediately. Failure to do so can pose significant risks to operators and lead to accidents that can be both harmful and costly.

Wear Suitable Clothes
Operators should always wear appropriate protective gear when working with these machines. This includes safety glasses, gloves, and protective clothing to shield against potential flying debris or splinters. Ensuring operators are well-equipped with safety gear is a fundamental step in preventing accidents and maintaining a secure working environment.

Use Bright Lighting
A well-lit workspace is not just a matter of convenience. It’s a safety imperative when operating a shearing machine. Proper lighting ensures operators can see the cutting area clearly and identify potential issues. Adequate lighting is crucial for safety and achieving precise cuts, as it allows operators to work with confidence and accuracy.

Conduct Routine Machine Inspections
Frequent inspections of your shearing machine are key to identifying and addressing any maintenance issues before they escalate. These assessments should be thorough, covering the condition of blades, hydraulics, electrical systems, and any other critical components. Regular maintenance checks help prolong the life of the machine and prevent costly breakdowns, ultimately leading to a more efficient operation.

Factors to Consider Before Purchasing a Metal Cutting Shear

Metal cutting shears come with different abilities for different materials. They are also far more technological advances, so they make work faster and are more productive.

1. What Type of Metal Is Being Sheared?

The type, thickness and consistency of the materials you are shearing will greatly affect the recommended choice of shear you purchase. If you're shearing thin gage metals or light aluminum you might be fine with an air or electrically operated shear, whereas if you're shearing ¾” Plate with plasma cut holes throughout you may really need to consider a good mechanical shear for the shock absorption capabilities.
It's not only important to consider the type of material but also the structure of that material as Tread Plate, Expanded Metals, Perforated metal etc all shear differently than flat material of an equal make.

2. What Kind of Quantity of Sheared Parts Are Needed?

The quantity of parts you need to shear is almost as important as the type of material you are shearing. While a basic and inexpensive machine might be fine for low-volume intermittent use, a more sophisticated or robust machine would be required for the production duties of, say a steel service center.
Not only do the machines have a wide variation of designs but they also can be equipped with a large number of options including conveyor/stackers to bring the sheared material onto a stack on a pallet for quick removal. Other options can include high speed hydraulics or more accurate Front gauging options.

3. Design: Guillotine or Swing Beam?

Once you have decided on the drive type of the shear, you need to know what design style may be better suited for your needs. There are two basic design types of shears on the market (regardless if they are mechanically or hydraulically driven) and they are the Guillotine style or Swing Beam style. A guillotine design in a shear refers to the upper blade being driven directly downward by the drive mechanism whereas a swing beam pivots the upper blade forcing down the blade by using the power of leverage.
Guillotine style provides for a more robust, yet expensive shearing system whereas the Swing Beam style uses smaller drive (hydraulics) components due to the advantage of leverage it employs in the design.

4. Rake Angle, Adjustable or Fixed?

Rake Angle is the angle the upper shearing blade is canted at in order to not engage too much material during the shearing process. The lower the rake angle the better quality the resulting sheared edge (including twist, bow and camber) yet the more robust and powerful the shear must be. Lower rake angles engage more blade in the material requiring more force (and thus more machine) to shear. Ideally the perfect shear would have a zero rake angle, however the forces required to shear even the thinnest of materials would be astronomical making the machine itself far too costly. Adjustable rake angles can allow for smaller shears to engage thicker materials but at a cost. As the rake angle increases the sheared edge quality, blade life and machine stress increase. Thin sheared strips can come off twisted or bowed as a result of heavy rake angles.

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Frequently Asked Questions about Metal Shear

Q: What is Metal Shearing?

A: There are numerous techniques manufacturers use for cutting metals, including grinding, turning, and drilling. Some are assisted with laser, high-speed waterjet, and heat. Each of these techniques suit specific applications. For instance, for making intricate sculptures, waterjet cutting is the best bet due to its flexible settings. Some techniques, however, such as metal shearing, prove more efficient than others, which is why they are mostly employed in mass productions. So what is shearing in metal work?
Also known as die cutting, metal shearing is the process of cutting straight lines on a metal die or stock by forcing two blades past each other. The metal shearing process is similar to how scissors work except all points along the edges of both blades meet at the same time. Sometimes, though, the blades can be mounted at an angle to reduce the shearing force required. The ultimate goal in shear cutting is to prevent the formation of chips and eliminate the need for burning or melting, which badly affects the properties of the metal die.

Q: How does a metal sheer work?

A: A metal shear consists of different working parts. It has two blades—a moving blade, called punch, and a fixed blade, called die. The punch pushes the workpiece against the die until a clearance of 5% to 40% of the thickness of the metal is reached. Clearance is the distance between the point where the cutting takes places and the point where the sheared side of the metal totally separates from the other side.
It’s important to note that the clearance has a major impact on both the quality of the cut and the machine’s energy efficiency. Insufficient clearance may result in the two parts of the stock still slightly attached, which usually entails manual prying to separate them. Too much clearance, on the other hand, may lead to roll-over or heavy burring, which is just as damaging to the metal.

Q: What is a hydraulic shearing machine?

A: A Hydraulic Shearing Machine is an industrial tool used for cutting metal bars and sheets that you otherwise would find difficult to cut. It includes a combination of rotating blades and disks that allow for the above-mentioned action.

Q: What is a scrap shear?

A: Hydraulic mobile shear for dedicated steel shearing. Scrap shears have been designed for demolishing iron structures and for cutting different structural steels.

Q: What is the advantage of a hydraulic shear?

A: Advantages of using Hydraulic Shearing Machines over Mechanical Models. Hydraulic shearing machines are fast and accurate and make it easy to cut a lot of metal in factories. Hydraulic shears don't require a lot of maintenance as mechanical models and hence are cost effective.

Q: How does a metal shear work?

A: The machine may be foot powered, less commonly hand powered, or mechanically or hydraulically powered. It works by first clamping the material with a ram. A moving blade then comes down across a fixed blade to shear the material.

Q: How does a hydraulic shearing machine work?

A: The hydraulic shearing machine is a kind of machine that uses a reasonable blade gap to apply shearing force to metal plates of various thicknesses using a moving upper blade and a fixed lower blade so that the plates can be broken and separated according to the required size.

Q: What are metal shears called?

A: You might call them shearing machines or guillotines, use tin snips or a throatless shear. Whatever the name, cutting sheet metal cutting plays a critical role in the metal fabrication industry. Naturally, with such ubiquitous machinery as metal cutting shears, there are many types and many names for the tool.
At its most basic, the cutting process involved in shearing metal requires enough force to be applied to the material that it will fail along the line required. Most commonly, shearing is used to cut a sheet parallel to an existing edge which is held square. However, equipment such as ‘throatless shears’ exist on the market that allow complex shapes of undefined length to be cut.

Q: What is the advantage of a hydraulic shear?

Q: How does a hydraulic metal shear work?

A: A hold-down cylinder is driven up by the hydraulic system to press the metal plate, and then a left and right cylinder drive the blade up and down in order to get the perfect cut for your part. The cutting process is similar to that of a pair of scissors — but on a much larger scale.

Q: What’s the difference between shearing and die cutting?

A: Shearing and die cutting are similar metal fabrication processes that involve cutting metal with one or more blades. The two metal fabrication processes, however, use different types of cutting blades. In shearing, straight blades are used. In die cutting, curved blades are used.

Q: Why use industrial sheet metal shear?

A: Sheet Metal Shear is a metal fabrication process that’s used to trim and remove unwanted material from sheet metal. It involves the use of a machine or tool, such as a guillotine machine, to slice through sheet metal with extreme precision. Shearing doesn’t require the use of heat — sheet metal is typically sheared while cold or at room temperature — nor does it produce waste in the form of chips, making it an attractive choice for manufacturers.

Q: Why is shearing machine so popular?

A: Shears are one of the most crucial and versatile instruments in the industrial world, and they have been in use for many years in a wide range of applications. These devices can cut a wide range of metals with simplicity and precision.

Q: How does a metal shearing machine work?

A: Shearing machines are multipurpose devices used in the cutting of alloys and other sheet metal. Some shearing machines use a scissor-like, angular shear action to cut metal into sheets or strips. Other, larger machines use a straight shear action with the blade fixed at an angle as opposed to the angular movement.

Q: What are metal shears used for?

A: A power shear is electrically or pneumatically powered hand tool designed to blank large pieces of sheet metal. They are designed to cut straight lines and relatively large radius curves. They are advantageous over a bandsaw because there is not a size limit. Large versions can cut sheet metal up to 12 gauge.

Q: What is the clearance for shearing steel?

A: Depending on the source, the recommended die clearance when shearing mild steels is 5% to 10% of metal thickness. For punched holes, these represent per-side values. Although this may have been satisfactory for mild steels, the clearance should increase as the tensile strength of the sheet metal increases.

Q: What are the different types of shear machines?

A: There are two main types of shearing machines for cutting plates: linear and circular. The linear shearing machine is powered by hydraulic devices and can handle thicker metal plates. The circular plate shearing machine is powered by a motor and can cut circular metal plates.

Q: What is the mechanical shearing machine?

A: Mechanical Shearing Machines are commonly used for cutting large sheets, bars, and plates of metallic and non-metallic materials into different shapes.

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