page_title: Carbide saw
section_title: Machine stiffness
hierarchical_section_title: Carbide saw / Machine stiffness
caption_attribution_description: English: Stiffness of Carbide Slide Saw (Open Force Loop)
context_page_description: Carbide saws are machine tools for cutting. The saw teeth are made of cemented carbide, so that hard materials can be cut.
context_section_description: When a circular carbide-tipped saw blade enters or exits the material, only one tooth is cutting. The fluctuation of the load, when the tooth enters and exits the cut, induces vibrations and requires a very stiff gear box and machine.
  A pivot saw has the highest degree of stiffness, because the forces are arranged in a closed loop (fig.1). If we assume that the base of such a saw is very rigid, the force will flow from the pivot of the gearbox to the ball screw feed system in a closed loop, whereby the cutting force engages in the middle, approximately, between rotation point and ball screw. This arrangement substantially reduces the lost motion and compliance in the feed system. Furthermore, the ball screw drive which forces the blade into the cut is bolted to the fixture frame which again is clamped to the billet and gives this arrangement additional rigidity.
  Saws with horizontal or tilted slides have an open loop force flow (fig.2) and maintain any lost motion and compliance of the feed system.
caption: fig.2: Horizontal slide saw with open loop force flow
exif: {"Image ImageWidth": "4013", "Image ImageLength": "2274", "Image BitsPerSample": "[8, 8, 8]", "Image Compression": "Uncompressed", "Image PhotometricInterpretation": "2", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "600", "Image YResolution": "600", "Image PlanarConfiguration": "1", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS6 (Macintosh)", "Image DateTime": "2012:10:23 11:01:10", "Image ExifOffset": "2328", "Image Padding": "[]", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "96", "Thumbnail YResolution": "96", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "4538", "Thumbnail JPEGInterchangeFormatLength": "4153", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "4515", "EXIF ExifImageLength": "2265", "EXIF Padding": "[]"}