Types of reaming bars

Reaming is a mechanical machining process that is used to obtain high-precision holes and surface finish. To ensure the success of this operation, it is essential to choose the correct reaming bars. In this article, we will explore the different types of reaming bars, explaining their specific functions and when they are used.

Types of reaming bars

• Rigid reaming bars

Rigid reaming bars are the most common and are used to bore standardized sized holes. These bars are usually made of carbon steel and have a high mechanical strength. They are designed to work under moderate load conditions and are suitable for precision reaming in materials such as steel and cast iron. Rigid reaming bars can be used on both manual and computer numerical control (CNC) machines.

• Adjustable reaming bars

Adjustable reaming bars offer the flexibility to fit a wide range of hole sizes. They consist of a central bar and a series of interchangeable inserts that can be adjusted to fit the desired size. This type of bar is particularly useful when working with non-standard holes or when it is necessary to obtain very precise tolerances. Adjustable reaming bars are widely used in the automotive, aerospace and precision engineering industries.

• Floating reaming bars

The floating reaming bars are designed to compensate for any deviations or irregularities in the bore axis. These bars consist of an outer bar and an inner bar, which are connected by bearings or articulated joints. During reaming, the inner bar can move independently of the outer bar, adapting to the variations of the hole axis. Floating reaming bars are widely used for large boreholes or when it is necessary to work on uneven or asymmetrical surfaces.

• Spindle reaming bars

Spindle reaming bars are designed to bore large holes with high precision. These bars consist of a central spindle that can be expanded or contracted to fit the size of the hole. The spindle is connected to a rigid outer bar that transmits the necessary strength and stability during reaming. Spindle reaming bars are commonly used for engine cylinder borings, large bearings and other industrial applications.

• Telescopic reaming bars

Telescopic reaming bars are used for extended length reaming. They consist of a series of telescopic sections that can be lengthened or shortened according to the needs of the operation. These bars allow you to bore deep holes or pass through internal obstacles, such as spindles or shafts. Telescopic reaming bars are widely used in the automotive, shipbuilding industry and in the production of large mechanical components.

• Profiling reaming bars

Profiling reaming bars are designed to bore holes with complex shapes or non-linear contours. These bars are equipped with special inserts that can follow the profile of the desired hole. They are often used to create conical holes, elliptical holes or holes with non-circular cross sections. Profiling reaming bars are widely used in the aerospace, automotive and mould manufacturing industries.

Conclusions

Choosing the right type of reaming bar is crucial for accurate and high-quality results. Rigid reaming bars are ideal for standardized reaming, while adjustable bars offer flexibility for working with non-standard holes. Floating bars are indispensable to compensate for the deviations of the hole axis, while spindle bars are ideal for large boreholes. Telescopic bars allow you to reach deep holes or overcome internal obstacles, while profiling bars are necessary to create holes with complex shapes. With the correct selection and use of reaming bars, it is possible to achieve results of impeccable precision and surface finish.