Boring Bars And Boring Heads – The Various Types
Making holes with lathes and mills needs the industrial process known as boring, which calls for a number of different tools and equipment. Before the boring process, holes are drilled into a surface. Boring tools are used to precisely size the holes for the application once they have been made. A boring bar and boring head are the two essential parts needed to bore a hole, and several more parts, such as the cartridge and adaptor, are also necessary. Let’s examine the several varieties of commonly used boring bars and heads.
Boring bars
The boring bar is a cylindrical cutter to which a boring tool or cutter is securely attached. High-quality boring bars can be used to machine deep bores. When maximum stiffness is required, particularly when finishing extremely lengthy bores, carbide bars are the perfect answer. Basic boring bars with carbide inserts are common and inexpensive, which is why they are found in almost every machine shop. Single-edge boring bars have only one point of contact with the workpiece, unlike drills or reamers. The bar is consequently unsupported, which can occasionally cause chatter or vibration. The only real negative to these cutting tools is chatter issues. However, this chatter issue can also be overcome with the right measures. These bars may be axially manipulated and clamped in small tool holders to the necessary length. In this case, hydraulic tool holders are advised. Solid carbine bars are not suggested for hard roughing, though. Then there are heavy metal boring bars, which offer greater stiffness and vibration dampening than standard steel shank tools. These bars are suitable for long bores more than a 5:1 ratio. They are more tough than carbide due to its
dense structure and machinability. For holding these bars in place, both hydraulic and milling chucks are advised.
Boring heads
When tolerances prevent the use of a drill bit, or when a large enough drill bit or reamer is not available, large diameter holes are produced using boring heads. In some circumstances, a boring head can also be used to change the centrelines of holes or enlarge existing ones. Because it may be positioned in a variety of places and can move the boring bar closer to or farther away from the hole’s axis to produce the required hole diameter, the most basic boring head is used to bore a wide range of hole sizes. Yet, finishing tight-tolerance holes frequently calls for specialized boring equipment, such as fine boring heads, that can be precisely adjusted in tiny increments for the appropriate outcomes. These boring heads are available in a variety of designs; some use standard round boring bars, while others use unique insert holders. The boring head can be selected based on the application and purpose. But, these boring heads being expensive, are often used for bored holes with tolerances less than 0.025 mm in diameter. In addition to the aforementioned, after a hole is bored, back boring and face grooving heads, as well as chamfering insert holders, are employed as secondary options. Moreover, some heads with cutters at the proper angles can aid in completing the procedure without the need to manually move the part, switch tools, or modify the cutter angle.
Machinists are required to pay close attention to every detail, along with the procedures and tools employed, regardless of the boring operation and tool. The success of a boring operation might depend on a variety of conditions, however adhering to the proper rules will ensure the intended results. The components of the workpiece should be well-supported, the tool should have the broadest feasible diameter, the length of the unsupported tool should be kept to a minimum, and the tool pressure should be changed to reduce chatter.
FineTech Toolings is your one-stop shop for all your boring needs, whether you need a boring bar, a boring head, another boring accessory, or perhaps a complete boring kit. The fact that each product offered here is industry-specific and complies with international quality standards makes FineTech Toolings the most reliable boring tools suppliers in Bangalore.