St Helens Bandsaw Safety

1. Which type of band-saw drive system require that speed changes be made only when the machine is running?

Cone-pulley drive

All-gear drive

Cog-belt drive

Variable-speed drive

A variable-speed drive system allows for speed changes to be made while the machine is running. This means that the operator can adjust the speed of the band-saw without having to stop the machine. This is advantageous as it saves time and allows for greater flexibility and efficiency in the operation of the band-saw. Cone-pulley drive, all-gear drive, and cog-belt drive systems do not offer this capability, as speed changes require the machine to be stopped and adjusted manually.

Explanation

A variable-speed drive system allows for speed changes to be made while the machine is running. This means that the operator can adjust the speed of the band-saw without having to stop the machine. This is advantageous as it saves time and allows for greater flexibility and efficiency in the operation of the band-saw. Cone-pulley drive, all-gear drive, and cog-belt drive systems do not offer this capability, as speed changes require the machine to be stopped and adjusted manually.

2. What is the cutting speed for dry-cutting or low carbon steel between 1/2" [13mm] and 1" [25mm] thick?

125 fpm

250 fpm

500 fpm

800 fpm

The cutting speed for dry-cutting or low carbon steel between 1/2" [13mm] and 1" [25mm] thick is 125 fpm.

Explanation

The cutting speed for dry-cutting or low carbon steel between 1/2" [13mm] and 1" [25mm] thick is 125 fpm.

3. What is the recommended band-saw cutting speed for dry-cutting of aluminum between 1/2" [13mm] and 1"[25mm] thick?

125 fpm [38mm]

250 fpm [76mm]

500 fpm [152mm]

800 fpm [244mm]

The recommended band-saw cutting speed for dry-cutting aluminum between 1/2" and 1" thick is 250 fpm [76mm]. This speed is suitable for achieving efficient and clean cuts in aluminum within the specified thickness range. It ensures that the blade cuts through the material smoothly without causing excessive heat buildup or blade wear. A cutting speed of 250 fpm [76mm] strikes a balance between cutting efficiency and maintaining the integrity of the aluminum material being cut.

Explanation

The recommended band-saw cutting speed for dry-cutting aluminum between 1/2" and 1" thick is 250 fpm [76mm]. This speed is suitable for achieving efficient and clean cuts in aluminum within the specified thickness range. It ensures that the blade cuts through the material smoothly without causing excessive heat buildup or blade wear. A cutting speed of 250 fpm [76mm] strikes a balance between cutting efficiency and maintaining the integrity of the aluminum material being cut.

4. Two operations other than sawing commonly done on vertial band saws are

Filing and nibbling

Polishing and notching

Filing and polishing

Notching and nibbling

Vertical band saws are versatile machines used for cutting various materials. While sawing is the primary operation, other operations like filing and polishing can also be performed using these saws. Filing involves using a file to shape or smooth a workpiece, while polishing is done to achieve a smooth and shiny surface. These operations are commonly done on vertical band saws to refine and finish the cut edges or surfaces of the workpiece.

Explanation

Vertical band saws are versatile machines used for cutting various materials. While sawing is the primary operation, other operations like filing and polishing can also be performed using these saws. Filing involves using a file to shape or smooth a workpiece, while polishing is done to achieve a smooth and shiny surface. These operations are commonly done on vertical band saws to refine and finish the cut edges or surfaces of the workpiece.

5. What is the minimun radius of a curved cut that can be made with a 3/8" wide blade?

3-3/4"

2-1/2"

1-1/4"

5/8"

The minimum radius of a curved cut that can be made with a 3/8" wide blade is 1-1/4". This means that the smallest circle that can be cut using the 3/8" wide blade has a radius of 1-1/4".

Explanation

The minimum radius of a curved cut that can be made with a 3/8" wide blade is 1-1/4". This means that the smallest circle that can be cut using the 3/8" wide blade has a radius of 1-1/4".

6. What pitch band-saw is recommended for cutting metal 1/2" to 2" thick?

18 teeth per inch

14 teeth per inch

10 teeth per inch

8 teeth per inch

A pitch band-saw with 10 teeth per inch is recommended for cutting metal 1/2" to 2" thick. This is because a higher number of teeth per inch provides a finer cut, which is suitable for thinner materials. However, if the teeth per inch are too high, it can cause the blade to bind or break. Therefore, 10 teeth per inch strikes a balance between providing a clean cut and being strong enough to handle thicker metals.

Explanation

A pitch band-saw with 10 teeth per inch is recommended for cutting metal 1/2" to 2" thick. This is because a higher number of teeth per inch provides a finer cut, which is suitable for thinner materials. However, if the teeth per inch are too high, it can cause the blade to bind or break. Therefore, 10 teeth per inch strikes a balance between providing a clean cut and being strong enough to handle thicker metals.

7. Because of it's ability to make curved cuts, a vertical band saw is also called

Jig saw

Contouring machine

Universal saw

Profile saw

A vertical band saw is commonly referred to as a contouring machine because it has the capability to make curved cuts. Unlike a jig saw, which is handheld and primarily used for cutting intricate shapes, a vertical band saw is a stationary machine that allows for more precise and controlled cutting of curves. The terms "universal saw" and "profile saw" do not accurately describe the specific functionality of a vertical band saw, making "contouring machine" the most appropriate term.

Explanation

A vertical band saw is commonly referred to as a contouring machine because it has the capability to make curved cuts. Unlike a jig saw, which is handheld and primarily used for cutting intricate shapes, a vertical band saw is a stationary machine that allows for more precise and controlled cutting of curves. The terms "universal saw" and "profile saw" do not accurately describe the specific functionality of a vertical band saw, making "contouring machine" the most appropriate term.

8. Making parts completely on a band saw is known as

Band machining

Band manufactoring

Band fabrication

Band construction

Band machining refers to the process of creating parts using a band saw. A band saw is a power tool with a continuous band of toothed metal that rotates on two wheels, allowing for precise cutting of various materials. In band machining, the band saw is used to cut, shape, and form parts according to specific dimensions and designs. This method is commonly used in industries such as woodworking, metalworking, and manufacturing, where accurate and efficient cutting is required. Therefore, band machining is the appropriate term for making parts completely on a band saw.

Explanation

Band machining refers to the process of creating parts using a band saw. A band saw is a power tool with a continuous band of toothed metal that rotates on two wheels, allowing for precise cutting of various materials. In band machining, the band saw is used to cut, shape, and form parts according to specific dimensions and designs. This method is commonly used in industries such as woodworking, metalworking, and manufacturing, where accurate and efficient cutting is required. Therefore, band machining is the appropriate term for making parts completely on a band saw.

9. What type of band-saw tooth set is recommented for most cutting on vertical band saws?

Skip tooth

Regular

Hook

Tungsten carbide

Regular tooth set is recommended for most cutting on vertical band saws. This type of tooth set is designed to provide a balance between cutting speed and smoothness of the cut. It has alternating teeth that are evenly spaced, allowing for efficient chip removal and reduced heat buildup during cutting. This tooth set is suitable for a wide range of materials and cutting applications on vertical band saws.

Explanation

Regular tooth set is recommended for most cutting on vertical band saws. This type of tooth set is designed to provide a balance between cutting speed and smoothness of the cut. It has alternating teeth that are evenly spaced, allowing for efficient chip removal and reduced heat buildup during cutting. This tooth set is suitable for a wide range of materials and cutting applications on vertical band saws.

10. What type of band-saw blade tooth set is recommended for most cutting on vertical band saws?

Raker

Wavy

Alternate

Any of above

The raker tooth set is recommended for most cutting on vertical band saws. This type of tooth set consists of a sequence of teeth that are set in a straight line, with each tooth slightly higher than the previous one. This arrangement allows for efficient cutting and chip removal, making it ideal for vertical band saws. The wavy tooth set and alternate tooth set are not as commonly used for vertical band saws, as they are more suited for specific cutting applications. Therefore, the raker tooth set is the most appropriate choice for most cutting on vertical band saws.

Explanation

The raker tooth set is recommended for most cutting on vertical band saws. This type of tooth set consists of a sequence of teeth that are set in a straight line, with each tooth slightly higher than the previous one. This arrangement allows for efficient cutting and chip removal, making it ideal for vertical band saws. The wavy tooth set and alternate tooth set are not as commonly used for vertical band saws, as they are more suited for specific cutting applications. Therefore, the raker tooth set is the most appropriate choice for most cutting on vertical band saws.