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Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.
The style of cutting does not have the pause required by the reciprocating lathe's rotation. Even with continuous revolution, however, the turner controls the contact of tools and wood entirely by hand. The cutters are not fixed, nor advanced automatically, as with the metal-working lathe. The nature of wood defines woodturning techniques.
Turning is a machining process in which a cutting tool, typically a non-rotary tool bit, describes a helix toolpath by moving more or less linearly while the workpiece rotates. Usually the term "turning" is reserved for the generation of external surfaces by this cutting action, whereas this same essential cutting action when applied to ...
The goal is to tool a job to run the SFM as high as possible to increase hourly part production. However some materials will run better at specific SFMs. When the SFM is known for a specific material ( ex 303 annealed stainless steel = 120 SFM for high speed steel tooling ), a formula can be used to determine spindle speed for live tools or ...
For spindle turning, the wood is held on the lathe either by both ends (between the headstock and tailstock) or by one end only using a lathe chuck [2]. Wood is generally removed by running a turning tool down the slope of the wood from a larger diameter in the wood to a smaller diameter.
A therming rig includes individual turning blanks separated by gaps when mounted between end plates. These gaps result in a process called ‘turning air’, as shown in Figure 4, where the cutting action occurs intermittently as the turning blanks rotate past the cutting tool. Production therming rigs often hold 20 or more spindles at a time.
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Segmented turning, also known as polychromatic turning, is a form of woodturning on a lathe where the initial workpiece is composed of multiple parts glued together. The process involves gluing several pieces of wood to create patterns and visual effects in turned projects.
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