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The drawbar is then tightened, drawing the shank firmly into the spindle. The draw-bar is important on milling machines as the transverse force component would otherwise cause the tool to wobble out of the taper. All machine tapers are sensitive to chips, nicks (dents), and dirt. They will not locate accurately, and the self-holding variety ...
The peak of popularity for building this type of spindle nose was the 1940s and 1950s. The chuck may be held against the taper with cam-lock posts that wedge into a stuck-fast position. Industry-standard spindle nose designs allow wide interchangeability. This cam lock spindle nose system replaced the earlier systems on most machine tools in ...
British Rail Class D1/3 (formerly DY1) was a locomotive class commissioned by British Rail in England. It was a diesel powered locomotive in the pre-TOPS period built by Ruston & Hornsby at their Iron Works in Lincoln. In appearance, it was similar to British Rail Class 97/6, but with an 0-4-0 wheel arrangement.
Three curved chevrons on each nose, in the same cream, added to that effect. To British eyes, the locomotive's bulldog nose styling was reminiscent of American locomotives, such as the EMD E-unit or ALCO PA designs [ citation needed ] (partly because English Electric initially planned to offer the type for export), with high noses and small ...
A line drawing showing some basic concepts of speeds and feeds in the context of lathe work. The angular velocity of the workpiece (rev/min) is called the " spindle speed " by machinists. Its tangential linear equivalent at the workpiece surface (m/min or sfm ) is called the " cutting speed ", " surface speed ", or simply the " speed " by ...
The drawbar pull is an important component that allows the milling machine to keep the tool in place while it’s being used. The force from the drawbar pull supplied to the tool has to be just right because not enough force would cause the tool to wobble leading to inaccuracy, and too much force would apply excessive stress, leading to shorter tool life.
A lathe faceplate is a basic workholding accessory for a wood or metal turning lathe. It is a circular metal (usually cast iron) plate which fixes to the end of the lathe spindle. The workpiece is then clamped to the faceplate, typically using t-slot nuts in slots in the faceplate, or less commonly threaded holes in the faceplate itself.
An automatic lathe may have a single spindle or multiple spindles. Each spindle contains a bar or blank of material that is being machined simultaneously. A common configuration is six spindles. The cage that holds these six bars of material indexes after each machining operation is complete. The indexing is reminiscent of a Gatling gun.
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