Pulse percussion drill

Abstract

The invention relates to a machining tool, in particular to a pulse impact drilling tool. The pulse impact drilling tool comprises a support. The support is rotatably connected with a main shaft. The main shaft is sleeved with a drive bevel gear. A drive disc is arranged on the support and rotatably connected with the support through a rotary shaft. The axis of the drive disc is perpendicular to the axis of the main shaft. Drive teeth are arranged on the edge of the drive disc and engaged with the bevel gear. An engaging and disengaging gear is arranged on the rotary shaft. A reverse rotation mechanism is arranged between the rotary shaft and the drive bevel gear. A segment of pulse protrusion is arranged on the end, close to the drive bevel gear, of the support. A pulse protruding block is arranged on the end face, close to the support, of the drive bevel gear. An oil storage cavity is arranged in a shoulder abutting rod. An oil dripping hole is formed in the end face, close to the support, of the shoulder abutting rod. An oil seal protrusion for plugging the oil dripping hole is arranged at the end, close to the shoulder abutting rod, of the support. The pulse impact drilling tool has the beneficial effects that reversal retraction of pulse frequency can be achieved, the -rocking direction does not need to be changed, and it is guaranteed that the hand-rocking speed is stable.

Description

Technical field [0001] The invention relates to a processing tool, in particular to a pulse percussion drilling tool. Background technique [0002] An existing type of hand-operated drilling tool uses a driving disk to drive the spindle to rotate by shaking the driving disk, and then drives the drill bit to rotate to achieve drilling. During the drilling process, waste debris is generated, which can easily block the drill bit. The drill bit needs to be reversed and retracted to discharge the waste debris out of the hole before continuing to drill. However, when this type of hand-operated drilling tool needs to reverse the drill bit to retract the tool and remove chips, the drill bit can only be reversed by shaking the drive plate in the reverse direction. That is, the drive disc needs to rotate clockwise a few times to drill, and then reverse counterclockwise a few times to retract the tool to remove chips, and then rotate clockwise to drill. During the drilling process, it is ...

AI Technical Summary

Problems solved by technology

During the drilling process, it is necessary to change the direction of the drive disc repeatedly, and the driving force of the hand drill comes from the human arm muscles. Frequent changes in the direction of the hand will result in different directions of force applied to the arm muscles and joints, which will easily cause the hand drill to deflect.

Moreover, the frequent changes of hand-cranking movements make the muscles unable to form muscle memory, resulting in unstable hand-cranking speed and affecting the quality and efficiency of drilling.

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