metal turning lathes - 0 views

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  #1 Dante Reynolds on 28 Feb 12

   

  Varieties in Lathe Turning Machines, Varieties in Lathe Turning Machines, Lathe Equipment For Spindle TurningThe vertical turning lathe is a diverse and useful tool for cutting and shaping a variety of materials for crafts, hobbies and commercial designs, such as furniture.
  The lathe motor drives a spindle to which the timber to be turned is attached by means of a range of equipment/accessories. The spindle, in the headstock of the lathe, is hollow with an internal taper which accepts some driving devices; other devices can be screwed onto the spindle which is threaded on the outside. The size of the taper and thread varies between lathes so it is important that the user knows these sizes when buying the various devices for fixing the timber to the lathe.
  
  The tailstock houses a hollow barrel which also has an internal taper, usually, but not always, the same taper as in the headstock. This barrel accepts the tail centre which supports the timber during spindle turning.
  
  The headstock spindle and the tailstock barrel should be hollow all the way through so that devices fitted into the tapers can be tapped out with a round bar when necessary. If the headstock is not hollow then it is advisable to use a thread protector on the headstock; unscrewing this will eject any device in the taper. Tail centres can be removed by placing a flat piece of metal between the centre and the body of the tailstock and then winding back the barrel with the tailstock handwheel.
  
  There are several types of drive centre for spindle turning. These do not grip the wood so there needs to be support from a tail centre. Two or four prong drive centres are usually supplied with a lathe. These consist of a centre point with two or four driving blades mounted on a tapered shank. The drive blades can be located in the timber by saw cut grooves or the drive centre can be driven into the timber with a wood or plastic hammer. The Stebcentre is a more advanced type of drive centre; the centre point is spring loaded and this is surrounded by a circle of fine points, the wood is driven onto the Stebcentre by turning the tailstock handwheel until the points engage. For turning light pulls there is a stepped drive which locates in the previously drilled blank. Tail centres come in a variety of sizes some with the point incorporated in a cup centre which reduces the risk of splitting the timber.
  
  The tailstock can also be used for housing a taper mounted chuck, such as a Jacob's chuck, for drilling the timber as it turns. A hollow tailstock also acts as the guide for a long hole boring bit which is necessary when making table or standard lamps.
  
  The tool rest is fitted in a banjo which can be moved along the lathe bed and at right angles to it. The tool rest can move up and down in the banjo and can rotate within it; both banjo and toolrest can be (and must be) locked when in the correct position. All lathes are supplied with one, toolrest - some with two. For best control of the cutting tool the tool rest should be as close as possible to the timber. When very small items are being turned (e.g.

   

  <div class="cArrow"> </div><div class="cContentInner"><a href="http://www.migente.com/your_page/blog/view_posting.html?pid=2003845&profile_id=7061899&profile_name=dantereynold1230&user_id=7061899&username=dantereynold1230" rel="nofollow">Varieties in Lathe Turning Machines</a>, <a href="http://www.iamsport.org/pg/blog/dantereynold1230/read/3161812/the-advantage-of-cnc-metal-lathes" rel="nofollow">Varieties in Lathe Turning Machines</a>, <a href="http://www.ziki.com/en/dante-reynolds+930698/post/metal-turning-l+13972904" rel="nofollow">Lathe Equipment For Spindle Turning</a>The vertical turning lathe is a diverse and useful tool for cutting and shaping a variety of materials for crafts, hobbies and commercial designs, such as furniture. <br />The lathe motor drives a spindle to which the timber to be turned is attached by means of a range of equipment/accessories. The spindle, in the headstock of the lathe, is hollow with an internal taper which accepts some driving devices; other devices can be screwed onto the spindle which is threaded on the outside. The size of the taper and thread varies between lathes so it is important that the user knows these sizes when buying the various devices for fixing the timber to the lathe.<br /><br />The tailstock houses a hollow barrel which also has an internal taper, usually, but not always, the same taper as in the headstock. This barrel accepts the tail centre which supports the timber during spindle turning.<br /><br />The headstock spindle and the tailstock barrel should be hollow all the way through so that devices fitted into the tapers can be tapped out with a round bar when necessary. If the headstock is not hollow then it is advisable to use a thread protector on the headstock; unscrewing this will eject any device in the taper. Tail centres can be removed by placing a flat piece of metal between the centre and the body of the tailstock and then winding back the barrel with the tailstock handwheel.<br /><br />There are several types of drive centre for spindle turning. These do not grip the wood so there needs to be support from a tail centre. Two or four prong drive centres are usually supplied with a lathe. These consist of a centre point with two or four driving blades mounted on a tapered shank. The drive blades can be located in the timber by saw cut grooves or the drive centre can be driven into the timber with a wood or plastic hammer. The Stebcentre is a more advanced type of drive centre; the centre point is spring loaded and this is surrounded by a circle of fine points, the wood is driven onto the Stebcentre by turning the tailstock handwheel until the points engage. For turning light pulls there is a stepped drive which locates in the previously drilled blank. Tail centres come in a variety of sizes some with the point incorporated in a cup centre which reduces the risk of splitting the timber.<br /><br />The tailstock can also be used for housing a taper mounted chuck, such as a Jacob's chuck, for drilling the timber as it turns. A hollow tailstock also acts as the guide for a long hole boring bit which is necessary when making table or standard lamps.<br /><br />The tool rest is fitted in a banjo which can be moved along the lathe bed and at right angles to it. The tool rest can move up and down in the banjo and can rotate within it; both banjo and toolrest can be (and must be) locked when in the correct position. All lathes are supplied with one, toolrest - some with two. For best control of the cutting tool the tool rest should be as close as possible to the timber. When very small items are being turned (e.g.</div>

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