it reduces the cost of threading for any holes that can safely allow the two small fast-helix grooves that it leaves behind along with the thread, which could be true in many applications. thread grinding. thread grinding is done on a grinding machine using specially dressed grinding wheels matching the shape of the threads. the process is usually used to produce accurate threads or threads in hard materials; a common application is ball screw mechanisms.
speno international sa is a manufacturer of railway track maintenance machines. the speno company was founded by frank speno in 1960 and is now headquartered in switzerland. it operates maintenance trains in many countries. the speno trains are bright yellow in color. 1 main activities. 1.2 measuring and inspection. 4 accident in the netherlands.
high pressure grinding rolls. a high pressure grinding roll, often referred to as hpgrs or roller press, consists out of two rollers with the same dimensions, which are rotating against each other with the same circumferential speed. the special feeding of bulk material through a hopper leads to a material bed between the two rollers.
gumming involves grinding the gullets of the saw teeth to a particular shape. the saw filer uses a semi or fully automatic grinding machine for this. saw bands operate under high stress and heat and in the presence of wood chips. carbon migrates into the steel from the wood.
a calender is a series of hard pressure rollers used to finish or smooth a sheet of material such as paper, textiles, or plastics. calender rolls are also used to form some types of plastic films and to apply coatings. some calender rolls are heated or cooled as needed. calenders are sometimes mis-spelled calendars .
run-out or runout is an inaccuracy of rotating mechanical systems, specifically that the tool or shaft does not rotate exactly in line with the main axis. for example; when drilling, run-out will result in a larger hole than the drill's nominal diameter due to the drill being rotated eccentrically off axis instead of in line . in the case of .
broaching is a machining process that uses a toothed tool, called a broach, to remove material. there are two main types of broaching: linear and rotary. in linear broaching, which is the more common process, the broach is run linearly against a surface of the workpiece to effect the cut. linear broaches are used in a broaching machine, which .