- published: 16 Oct 2015
- views: 66046
A lathe /ˈleɪð/ is a machine tool that rotates the workpiece on its axis to perform various operations such as cutting, sanding, knurling, drilling, or deformation, facing, turning, with tools that are applied to the workpiece to create an object with symmetry about an axis of rotation.
Lathes are used in woodturning, metalworking, metal spinning, thermal spraying, parts reclamation, and glass-working. Lathes can be used to shape pottery, the best-known design being the potter's wheel. Most suitably equipped metalworking lathes can also be used to produce most solids of revolution, plane surfaces and screw threads or helices. Ornamental lathes can produce three-dimensional solids of incredible complexity. The workpiece is usually held in place by either one or two centers, at least one of which can typically be moved horizontally to accommodate varying workpiece lengths. Other work-holding methods include clamping the work about the axis of rotation using a chuck or collet, or to a faceplate, using clamps or dogs.
A tool is any physical item that can be used to achieve a goal, especially if the item is not consumed in the process. Tool use by humans dates back millions of years, and other animals are also known to employ simple tools.
Tools that are used in particular fields or activities may have different designations such as "instrument", "utensil", "implement", "machine", "device," or "apparatus". The set of tools needed to achieve a goal is "equipment". The knowledge of constructing, obtaining and using tools is technology.
Anthropologists believe that the use of tools was an important step in the evolution of mankind. Because tools are used extensively by both humans and wild chimpanzees, it is widely assumed that the first routine use of tools took place prior to the divergence between the two species. These early tools, however, were likely made of perishable materials such as sticks, or consisted of unmodified stones that cannot be distinguished from other stones as tools.
Stone artifacts only date back to about 2.5 million years ago. However, a 2010 study suggests the hominin species Australopithecus afarensis ate meat by carving animal carcasses with stone implements. This finding pushes back the earliest known use of stone tools among hominins to about 3.4 million years ago.
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In this video a build a really simple tool for centering parts on a lathe.
My take on grinding HSS lathe tools. The forms of tools and angles discussed may not be what is shown in books but they work well for me and make grinding much simpler.
In this video I discuss cutter geometry of the turning and facing tool for the lathe and do a demonstration on how to grind them.
In part 1 of this three-part series on grinding HSS lathe tools Barry Young of Bates Technical College in Tacoma WA walks us through the process of grinding a right hand lathe tool. Barry uses a mild steel blank (instead of HSS) for demonstration purposes as it grinds much faster. When practicing it is a good idea for you to also start with mild steel. After you have successfully created a few tools from mild steel, try a HSS blank. This will save you time and perhaps more importantly, money. HSS tool blanks are much more expensive than a chunk of mild steel, and they will also put more wear on your grinding wheel while you're learning and making mistakes than a mild steel blank will. Be safe, be patient, and be persistent. Grinding your own tools can be rewarding and fun ... once ...
Many quality tools these days come without a handle. This helps reduce the cost and allows you to make a handle that is customized for you; plus they are fun to make! This video demonstrates how to make your own wooden lathe tool handle.
Sixth of my "Little Quickie" videos. I produce these shorter than usual videos to answer viewer questions about machining. As for all thatlazymachinist videos, this video is aimed at the novice machinist who wishes to develop proper basic work skills. More specifically, this video answers Alain, Mark and Jacky's question about how to position their tools cutting edges for lathe work. MARC LECUYER, thatlazymachinist.com
In which I turn a tool handle FOR a carbide tool, USING carbide tools.
Are you ready to buy your first set of lathe chisels? Do you need a gouge, scraper, or parting tool? Or all of the above? Here’s some great buying advice that will help you choose your chisels. In addition to learning what chisels you need, you’ll see how the chisels are used.