Simple device for expanding deep holes and cooling and chip removal method

Abstract

The invention discloses a simple device for expanding deep holes and a cooling and chip removal method. The simple device comprises a machine body, a working table, a movable drilling platform and a pulsed compressed air source; the machine body is provided with a longitudinal screw pair and a feed motor; the working table is provided with a table base, a handwheel, a horizontal screw pair and a platform; the movable drilling platform is provided with a speed reducer, a drilling motor and a drilling stem, and the drilling stem is provided with an auger bit; the pulsed compressed air source is a device for supplying pulsed airflow which comprises an air pump, an electromagnetic valve, an intermittent switching control circuit, a flexible output tube and a blowing tube. The cooling and chip removal method is that during hole expansion, the pulsed airflow supplied by the pulsed compressed air source blows into a flow passage from the hole-expanding feed end of the auger bit, so that chips produced in hole expansion are blown out from the other end of the flow passage. The simple can achieve the object of reducing cost and increasing quality and efficiency for the expansion of deep holes of heat exchange plates.

Description

technical field [0001] The invention relates to a cutting processing device and method, in particular to a simple device for deep hole widening and a method for cooling and chip removal for deep hole reaming and cutting processing of a magnesium-aluminum alloy heat exchange plate. Background technique [0002] The magnesium-aluminum alloy heat exchange plate is referred to as the heat exchange plate, which is a heat exchange and heat conduction component used in thermal equipment. The inside of the heat exchange plate is uniformly arranged with a number of through holes parallel to the long sides of the heat exchange plate called flow channels. Hole, the blank hole of the flow channel hole is formed at the same time when the heat exchange plate blank is cast, and the finished heat exchange plate is obtained by milling the heat exchange plate blank on six sides and cutting and expanding the flow channel hole; Since the depth of the flow channel hole is equal to the long side ...

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Problems solved by technology

[0002] The magnesium-aluminum alloy heat exchange plate is referred to as the heat exchange plate, which is a heat exchange and heat conduction component used in thermal equipment. The inside of the heat exchange plate is uniformly arranged with a number of through holes parallel to the long sides of the heat exchange plate called flow channels. Hole, the blank hole of the flow channel hole is formed at the same time when the heat exchange plate blank is cast, and the finished heat exchange plate is obtained by milling the heat exchange plate blank on six sides and cutting and expanding the flow channel hole; Since the depth of the flow channel hole is equal to the long side of the heat exchange plate, the hole depth is much larger than the diameter of the hole, so the enlarging process of the flow channel hole is called the deep hole processing of the heat exchange plate; the prior art uses a special deep hole Drilling machines process deep holes, because the price of deep hole drilling machines is high, and the processing cost is high; in addition, for the flow channel holes made of magnesium and aluminum alloys, although they are supplemented by cooling liquid, the cutting edge of deep hole drills is also prone to produce built-up edge, which affects the hole. The accuracy and quality of the wall; when deep hole drilling machine processing, in order to remove chips smoothly and cannot feed fast, resulting in low processing efficiency; therefore, the prior art has the problems and deficiencies of high cost, poor quality, and low efficiency

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