Sherline 5500 – Vertical Mill with Zero Adjustable Handwheels
The main difference between a lathe and a mill is that on a lathe, the work turns and the cutting tool is stationary, while on a mill, the tool turns and the work is stationary. Because of the tremendous number of operations that can be performed on a vertical mill, it is commonly regarded as the most important tool in the modern machine shop…the workhorse of the industry.
Jobs for a mill…
At first glance, a vertical mill looks similar to a drill press, but there are some important differences; such as, a spindle that can take side loads as well as end loads and an accurate method of moving the work in relation to the spindle on all three axes. Sherline milling machines can perform all of the tasks and operations that a large commercial machine can perform. Operations such as fly cutting, precision drilling, and boring are all routine tasks for the Sherline mill. Because the tool turns rather than the work, much larger parts can be worked on in a mill, and these parts need not be round. The work is securely held, thus extremely accurate hole patterns can be drilled or bored. The longer X-axis throw also increases the machine’s versatility over that of the lathe with the vertical milling column attachment. It is an extremely rigid, accurate tool that accomplishes tough machining jobs with ease.
The 5000 mill can be ordered with adjustable “zero” handwheels replacing the standard handwheels that would normally come with that model. Adjustable handwheels allow the machinist to option of resetting the handwheel to zero (or any desired value) at any time. A locking screw is loosened, allowing the read collar to be rotated without moving the handwheel. The collar can be reset to a zero reading and the locking screw retightned to re-engage the collar so it moves with the handwheel. Being able to zero the handwheel at any time makes it easier to calulate your feed distance or stopping point for the next feed, thereby eliminating math errors.
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