Double band saw

Types of double band saws

Both types of double band saws for metals are designed to achieve the same cutting goals, but they go about achieving this differently.

• Vertical double band saws

  The blade on a vertical double band saw for metal operates in an upward and downward motion. It is usually set up to cut larger metal stock. This machine excels at making straight cuts, though it is also capable of making curved and irregular cuts when configured. Many vertical saws have features that improve their efficiency, such as an auto-feed mechanism that lets them work uninterrupted for long periods.

• Horizontal double band saws

  The blade on a double horizontal band saw machine cuts in a straight line horizontally. This type of cuts has the advantage of using gravity to assist the cut as the work material is usually resting on a table or stand. Like the vertical model, the horizontal double band saw also comes in different specifications and features, including automatic operations and hydraulic controls. They are usually more portable than their vertical counterparts and can be used on a construction or work site to carry out pipe sections.

Specifications and maintenance of double band saws

Specifications

• Cutting Capacity: The maximum width and height of materials that can be used. E.g., a machine may have a cutting capacity of 400mm x 300mm, which means that it can cut through objects that are 430mm wide and 330mm tall at most.
• Blade Length and Width: Are the size and dimensions of the blade. For example, the blade length must be between 3.6 to 4.1 meters, while the blade width must be within 20 to 32mm.
• Motor Power: Refers to the power rating of the motor, which determines the machine's power and cutting speed. For instance, an electric motor may have a power of 5hp (horsepower) or 3kW (kilowatts).
• Cutting Speed: This would be the same as the band saw speed mentioned previously. The saw may have various speeds ranging from 60 to 1200 RPM (revolutions per minute).
• Weight: This refers to the mass of the machine, which can affect its stability during operation. For example, a machine may weigh 800kg.
• Dimensions: These are the length, width, and height of the saw machine and associated parts, such as the table, fence, and blade guard. For example, a band saw may measure 2.5m x 1.2m x 1.5m (length x width x height).

Maintenance

• Regular Inspection: Check for any signs of wear, damage, or loosening of parts. Inspect the saw blades for dullness, nicks, and bends. Also, look at the blade guides, bearings, and tracks for clogs or damage.
• Cleaning: Remove sawdust, debris, and dirt from the entire machine. This includes the blades, tables, fences, tracts, and suction ports. A clean double bandsaw is more efficient and provides cleaner cuts. It also reduces the risk of overheating and blade damage.
• Lubrication: Part of the guide and tracks that experience friction should be regularly lubricated. Doing this reduces the wear and tear on the moving parts and ensures a smoother operation.
• Blade Replacement: Dull or damaged blades will need to be replaced. After doing this properly, ensure the tensioning system works as it should, and calibrate to achieve the right tension.
• Cleaning of Dust Exhaust: If the dust or debris extraction system gets clogged up, it could become a fire hazard, injury risk, and health safety issues. Therefore, regularly cleaning the extractor system is necessary.
• Calibration: Ensure that the tables, fences, and blade alignment are checked and adjusted as required from time to time. Doing this ensures accuracy in cuts and ease of use of the machine.
• Operating Procedures: Make sure to follow the manufacturer's instructions for operating and maintaining the machine properly. This will inform the maintenance schedule for critical components, including the saw blade.

Usage scenarios for double band saws

Double band saws are used in many industries and applications to cut different materials in various shapes. Here are some common usage scenarios of double band saws:

• Woodworking industry: Double band saws are commonly used for wood processing in woodworking industries. They can cut logs into boards, beams, or other wood products. They are also used for resawing to obtain thin wood slices or veneers. Double band saws with high cutting capacities are suitable for cutting large-scale wood products, such as wood panels, plywood, and timber.
• Metalworking industrial and manufacturing: In metalworking industries, double band saws are the primary cutting tools for various metal materials, including steel, aluminum, copper, and titanium. They are used for cutting metal profiles, tubes, pipes, plates, and bars. Double band saws provide precise cuts and high efficiency, meeting the needs of different metal machining and manufacturing processes.
• Construction industry: In the construction industry, double band saws cut various building materials. For instance, they cut metal profiles and pipes used in construction frameworks. They also cut stones and concrete materials. Double band saws offer fast and accurate cutting, which assists in construction project implementation.
• Aerospace and automotive industries: When manufacturing parts, components, and structure assemblies for the automotive and aerospace industries, precision is crucial. Double band saws can cut complex shapes and profiles, such as aircraft components and automotive engine parts, from metals like titanium, stainless steel, and alloys that are tough to cut.
• Food processing industry: In the food processing industry, double band saws cut various food materials, such as meats, fruits, and vegetables. They are used for slicing, cutting, and shaping food products, assisting food processing and production lines.
• Marine industry: Double band saws are used for shipbuilding and repair tasks in the marine industry. They cut metal plates, pipes, and profiles, which helps create ship structures and components.
• Art and craft industry: In the art and craft industry, double band saws are used to cut materials for decorative works and artworks, such as sculptures, ornaments, and crafts. They are suitable for creating elaborate patterns and shapes, which provide creative designers with flexibility and freedom.
• Sports equipment industry: Double band saws are applicable cutting tools in the sports equipment industry. They can cut various materials, such as plastic, carbon fiber, and rubber. Also, they are ideal for making sports equipment components, such as tennis rackets, sports shoes, and protective gear parts.

How to choose double band saws

First, know the application needs. Identify the types of materials the band saw will be cutting and their shapes and sizes. Consider the cutting capacity needed to cut through the materials without any limitations. Next, evaluate the available floor space and determine the saw's size and weight capacity. Compare different types of band saws in terms of usage, efficiency, and cost. Consider power requirements and ensure there is sufficient voltage and amperage to support the saw's motor.

All blades are not created equal, but most band saws will accept various blade types, widths, and teeth per inch. When choosing a band saw, consider its compatibility with the blades that best suit the intended application and the blade change's convenience and speed. Assess the ease of setting up and changing cuts and the availability of precise controls and measurements. In addition, consider the machine's maintenance requirements, which include blade replacement, cleaning, and lubrication, to determine the maintenance tasks and schedule required for the saw.

With e-commerce, it is easy to buy a band saw machine online. However, it is good to know the after-sale services in case problems arise after purchase. Ask if there is any technical support or spare parts supplied. Depending on the project one is working on, one may need to inquire if the machine can be customized to suit unique requirements. If these questions are answered by the supplier, the buying process becomes smoother and more seamless.

Q&A

Q1 Are double band saws better than single band saws?

A1 Double band saws offer several advantages over single band saws. They provide more cutting power, allowing for faster cutting speeds and the ability to cut through thicker materials. They also offer greater cutting capacity, making it possible to tackle larger jobs. Additionally, double band saws produce cleaner, smoother cuts with less distortion. This is particularly important in industries where precision is paramount. Finally, double band saws are more efficient, helping to reduce operating costs in the long run.

Q2 What are the limitations of a double band saw?

A2 While double band saws are powerful and efficient, they do have some limitations. They are typically larger and more expensive than single band saws. This can be a consideration for businesses with limited space or tighter budgets. Double band saws may also require more maintenance and have more complex mechanisms, which could lead to higher repair costs over time. It's important to weigh these potential drawbacks against the benefits when considering a double band saw for purchase.

Q3 Can a double band saw cut curves and irregular shapes?

A3 Unfortunately, a double band saw cannot be used to cut curves and irregular shapes. The saw's blade is too wide. A machine with a wider blade, such as a double-cut band saw, should be used instead.

Q4 Can a double band saw be portable?

A4 Portable double band saws are available, but they are typically heavier and bulkier than portable single-band saws. This is because of the need to maintain stability and accuracy while cutting. Some suppliers manufacture double band saws with wheels or tracks for easier movement, but portability may not be the primary feature of most double band saws.