Essay On Apparatus For Controlling Tapping-Drilling Machine

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3.8 Research papers which are referred as reference : 1. Apparatus for controlling tapping-drilling machine-US08738028 An apparatus for controlling a tapping-drilling machine is disclosed in which holes can be formed by means of drilling tools, and threads can be formed by means of tapping tools. A worm is elongately formed on a spindle, and a worm wheel which is meshed with the worm is secured by a lateral shaft. At the leading end of the lateral shaft, there is installed a brake. In the preferred embodiment of the present invention, the electronic type brake is employed, and the electric current flowing through this brake is adjusted, so that the velocity of the vertical movement of the spindle sleeve (which is defined to be the ratio of the vertical moving distance to the revolutions of the spindle) can be automatically adjusted. For this purpose, an overall supervising controller in the form of a micro-controller is provided to receive sensed data from a spindle revolution sensing section, a revolution deviation (difference) sensing section, a spindle sleeve position sensing section and a manipulation switching section so as to output computed control data to an electronic brake control section, a motor forward/reverse driving section and an operation and alarming display section. Thus during a tapping or drilling operation, the …show more content…

Inclined tracks having a space there between are provided with a pivot able stabilizing bar which bears upon the heads of the fasteners within the tracks. Vibrations are induced into the stabilizing bar and the tracks so as to assist gravity in urging the fasteners down the tracks and so as to continually act to maintain the alignment position of the fasteners within the tracks. Track purging apparatus is provided whereby any misaligned fastener is purged from the

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