Pulse hand drill

Abstract

The invention relates to a machining tool, in particular to a pulse hand drill which comprises a support. A spindle is rotatably connected on the support, a driving bevel gear is arranged on the spindle in a sleeved manner, a driving disc is arranged on the support and rotatably connected with the same through a rotating shaft, axis of the driving disc is perpendicular to that of the spindle, driving teeth are arranged at the edge of the driving disc and meshed with the bevel gear, a clutch mechanism is arranged at the position of the rotating shaft, a reversing mechanism is arranged between the rotating shaft and the driving bevel gear, the spindle and the support are axially connected slidably, a pulse protrusion section is arranged on an end face, close to the driving bevel gear, of the support, a pulse convex block is arranged on an end face, close to the support, of the driving bevel gear, and the pulse convex block and the driving bevel gear are arranged eccentrically. The pulse hand drill has the advantages that reverse tool retreating at pulse frequency can be realized without changing hand-rocking direction, hand-rocking speed can be ensured to be stable basically, and drilling quality and efficiency can be improved.

Description

technical field [0001] The invention relates to a processing tool, in particular to a pulse hand drill. Background technique [0002] In an existing type of manual drilling tool, by shaking the drive disc, the drive teeth on the drive disc are used to drive the main shaft to rotate, and then the drill bit is driven to rotate to realize drilling. Waste chips are generated during the drilling process, and the waste chips are easy to block the drill bit. It is necessary to reverse the drill bit to retract the tool to discharge the waste chips out of the hole, and then continue drilling. However, when this type of manual 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 disc in reverse. That is to say, the drive disk needs to rotate clockwise several times to drill holes, then counterclockwise several times to retract the tool to remove chips, and then rotate clockwise to drill holes. Duri...

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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