Servo-feed drilling power head structure

Abstract

The invention discloses a servo-feed drilling power head structure, and belongs to the technical field of drilling tools. The servo-feed drilling power head structure comprises a transmission box fixing seat, a transmission box, a spline shaft, a spline shaft driving mechanism and a workpiece drilling mechanism, and is characterized by further comprising a servo-feed control mechanism, and the servo-feed control mechanism is used for driving the workpiece drilling mechanism to move upwards or downwards, is arranged on the transmission box and is connected with the workpiece drilling mechanism. The servo-feed drilling power head structure has the advantages that an auxiliary facility for providing compressed air is omitted, the workpiece drilling quality can be guaranteed, and a drilling tool can be effectively protected; the servo-feed drilling power head structure is low in noise, so that an environment of a work place can be obviously improved; manual troublesome adjustment is omitted; an excellent automatic control effect can be realized.

Description

Technical field [0001] The invention belongs to the technical field of drilling tools, and specifically relates to a servo-feed drilling power head structure, which is matched with a drilling machine tool or similar equipment to process required holes for metal workpieces. Background technique [0002] The technical information about the drilling power head can be found in the published Chinese patent documents. A typical example is the "pneumatic high-power drilling power head" recommended by the invention patent application publication number CN101797652A. The technical point of the patent solution is the hollow piston A cylinder is installed in the middle of the length direction (also called the height direction) of the rod, and the cylinder piston of the cylinder is connected with the hollow piston rod. For details, please refer to paragraph 0004 of the specification of the patent application. In addition, the "pneumatic electric drilling power head" introduced by the author...

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Problems solved by technology

One of the deficiencies in the structure of the pneumatic feed drilling power head, since compressed air is used as the power source for the movement of the piston rod, it is necessary to provide an air source device such as an air compressor or an air pump, resulting in a pneumatic feed drilling power head It can only work when it relies on auxiliary facilities, such as air compressors, etc.; second, because the processing stroke such as forwarding is realized through pneumatics, the forward speed must be adjusted through a hydraulic damper. However, the instability of the gas and the hydraulic damping Non-linearity will lead to instability in the drilling process, which will not only easily affect the drilling accuracy, but also damage the service life of drilling tools such as drill bits (cutters); Due to the switching of the working process, the noise during processing, that is, drilling, is relatively large, especially when the production site is equipped with multiple drilling power heads, the noise is even greater, thereby affecting the environment of the operation site (noise pollution); Fourth, Since it is difficult or even impossible to precisely control the stroke (fast stroke and working stroke) in the processing process, it is necessary to go through cumbersome and complicated mechanical adjustments, which affect the working efficiency on the one hand, On the other hand, the work intensity of the operator is increased, especially the mechanical adjustment is performed manually by the operator, and the accuracy of manual adjustment is related to the operator's experience, sense of responsibility and emotion, so the accuracy of the adjustment is objectively difficult to guarantee ; Fifth, due to the limitation of the control mode, it is difficult to control through the programmable logic controller (PLC)

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