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Pulse retract hand drill

A hand drill and knife retraction technology, which is applied to portable drills, drilling/drilling equipment, grinders, etc., can solve problems such as hand drill deflection, affecting drilling quality and efficiency, and failure to form muscle memory, etc., to achieve The effect of avoiding leakage and improving drilling quality and speed

Inactive Publication Date: 2015-11-11
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Pulse retract hand drill
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  • Pulse retract hand drill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: as figure 1 , 2 . As shown in 3, a hand drill with pulse retraction includes a bracket 01, a main shaft 05 is connected to the bracket for rotation, a drill bit 06 is installed on the free end of the main shaft, a driving bevel gear 03 is set on the main shaft, and a driving bevel gear 03 is set on the bracket. Disk 02, the drive disk is rotationally connected with the bracket through the rotating shaft 10, the axis of the drive disk is perpendicular to the axis of the main shaft, the edge of the drive disk is provided with drive teeth 021, and the drive teeth mesh with the drive bevel gear. A clutch mechanism is arranged at the rotating shaft, and a reversing mechanism is arranged between the rotating shaft and the driving bevel gear. The clutch mechanism includes a fixed disc 13 arranged on the support and a clutch disc sleeved on the rotating shaft. A section of clutch protrusion 131 is arranged on the end face of the fixed disc near the clutch disc, s...

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Abstract

The invention relates to a machining tool, in particular to a pulse retract hand drill. The pulse retract hand drill comprises a support. The support is rotationally connected with a main shaft. The main shaft is sleeved with a drive bevel gear. The support is provided with a drive disc. The drive disc is rotationally connected with the support through a rotating 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. The drive teeth are meshed with the bevel gear. A clutch mechanism is arranged on the rotating shaft. A reverse mechanism is arranged between the rotating shaft and the drive bevel gear. The pulse retract hand drill has the beneficial effects that pulse frequency reverse retracting can be achieved, the hand-cranking direction and action do not need to be changed, the basic stability of the hand-cranking speed is guaranteed, and the drilling quality and the drilling efficiency are improved.

Description

technical field [0001] The invention relates to a processing tool, in particular to a hand drill with pulse retraction. 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 dr...

Claims

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Application Information

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IPC IPC(8): B23B45/06B24B9/00B24B23/02
CPCB23B45/008B23B45/06B24B9/00B24B23/024
Inventor 孙永剑喻立军
Owner ZHEJIANG SCI-TECH UNIV
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