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Jemshah
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Enlightened
Asked: 2022-12-18T07:48:36+00:00 In:

state three; i. categories of fits; ii. functions of a steel rule.

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state three;

i. categories of fits;

ii. functions of a steel rule.

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2 Answers

  1. Best Answer
    Enlightened

    . There are three main categories of fits in mechanical engineering: clearance fits, transition fits, and interference fits.

    • Clearance fits: Clearance fits are designed to allow a certain amount of clearance or space between the two parts that are being fitted together. This type of fit is used when it is important to allow for movement or relative motion between the parts, or when the parts may be subject to thermal expansion or contraction.
    • Transition fits: Transition fits are designed to allow for a small amount of interference or overlap between the two parts being fitted together. This type of fit is used when it is important to maintain a secure connection between the parts, but some movement or relative motion is still desired.
    • Interference fits: Interference fits are designed to create a press fit or a tight fit between the two parts being fitted together. This type of fit is used when it is important to maintain a high level of stability and rigidity between the parts, and when minimal movement or relative motion is desired.

    ii. The functions of a steel rule include:

    • Measuring: A steel rule is used to measure the dimensions of objects or materials, either in inches or in millimeters. It is commonly used to measure the width, length, or thickness of parts or products, and to check for dimensional accuracy or conformity to specified tolerances.
    • Marking: A steel rule can also be used to mark lines or dimensions on materials or surfaces, either by hand or with the aid of a scribe or other marking tool.
    • Straight edge: A steel rule can be used as a straight edge to check for straightness or flatness, or to guide the cutting or machining of materials.
    • Scaling: A steel rule can be used to scale drawings or plans, either by measuring and transferring dimensions directly or by using a scale factor.
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  2. Enlightened
    1. Material: The material of the hacksaw blade should be suitable for the type of material being cut. For example, a carbon steel blade may be suitable for cutting softer materials, such as wood or plastic, but may not be as effective for cutting harder materials, such as stainless steel or aluminum. In these cases, a high-speed steel or tungsten carbide blade may be more suitable.
    2. Teeth per inch (TPI): The number of teeth per inch (TPI) on the hacksaw blade determines the fineness of the cut and the smoothness of the finish. Blades with a higher TPI will produce a finer cut, but may also require more effort to use and may wear out more quickly. Blades with a lower TPI will produce a coarser cut, but may be easier to use and have a longer lifespan.
    3. Blade thickness: The thickness of the hacksaw blade will affect the strength and rigidity of the blade, as well as its ability to withstand bending and twisting forces. Thicker blades may be more suitable for heavy-duty cutting applications, while thinner blades may be more suitable for precision cutting or for use in tight or confined spaces.
    4. Blade length: The length of the hacksaw blade should be suitable for the size and shape of the material being cut. Longer blades may be more suitable for cutting larger or longer pieces, while shorter blades may be more suitable for cutting smaller or more intricate shapes.
    5. Blade type: There are several different types of hacksaw blades available, including straight blades, flexible blades, and special purpose blades. The appropriate blade type will depend on the specific cutting application and the requirements of the job.
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