Drilling tool

A technology for drilling tools and tools, which is applied in the field of drilling tools and can solve problems such as excessive rotation of the housing

Pending Publication Date: 2022-02-25
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the piercing operation, if the tip tool is stuck on the workpiece for some reason, the excessive reaction torque will act on the housing of the drilling tool, which may cause the housing to rotate around the axis of rotation of the tool holder. over rotation

Method used

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Examples

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Embodiment Construction

[0033] Embodiments are described below with reference to the drawings. In addition, in the following embodiments, a hand hammer drill 1 which is an example of an impact tool and an example of a drilling tool is illustrated. The hammer drill 1 is configured to be capable of performing an operation of linearly driving the tip tool 91 along a predetermined drive axis A1 (hereinafter referred to as an impact operation) and an operation of driving the tip tool 91 to rotate around the drive axis A1 (hereinafter referred to as a drilling operation). ).

[0034] First, the schematic structure of the hammer drill 1 will be described. Such as figure 1 with figure 2As shown, the external contour of the hammer drill 1 is mainly formed by the main body housing 11 and the handle housing 15 . In this embodiment, both the main body case 11 and the handle case 15 are made of synthetic resin.

[0035] The main body case 11 is a long hollow body extending along the drive axis A1. A tool h...

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PUM

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Abstract

The invention provides a drilling tool. A hammer drill (1) is provided with a motor (2), a tool holder (30), a main body case (11), a grip section (17), a base section (18), and an acceleration detection unit (43). The tool holder (30) is driven in rotation about a drive axis (A1) extending parallel to a rotation axis (A2) of the motor shaft (25). The grip section (17) extends in a direction intersecting the drive axis (A1) at the rear of the main body case (11). The gripping section (17) has an upper end portion disposed on the drive axis (A1) and a lower end portion located at a position away from the drive axis (A1). The base section (18) connects the lower end portion of the grip section (17) and the main body case (11) so as to form an annular portion together with the grip section (17). The acceleration detection unit (43) is housed in the base section (18) and detects the state of rotation of the hammer drill (1) about the drive axis (A1). Therefore, the reasonable configuration of the detection device can be realized.

Description

technical field [0001] The invention relates to a drilling tool configured to drive a tip tool to rotate about an axis. Background technique [0002] The drilling tool performs the drilling operation by driving the rotation of the tip tool mounted on the tool holder. In the piercing operation, if the tip tool is stuck on the workpiece for some reason, the excessive reaction torque will act on the housing of the drilling tool, which may cause the housing to rotate around the axis of rotation of the tool holder. overspin. Therefore, there is known a drilling tool capable of detecting an excessive rotation state of a housing and appropriately controlling a motor. For example, the hammer drill disclosed in Japanese Patent Laid-Open Publication No. 2018-58188 has a detection portion for detecting an over-rotation state of the casing. Contents of the invention [0003] [Technical problem to be solved by the invention] [0004] The above-mentioned hammer drill is a relatively...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25F5/00B25D16/00
CPCB25F5/00B25D16/00B23B45/001B23B2260/128B25D17/00B25D17/043B25D2250/121B25D2250/221B25F5/02B25D16/006B25D2250/095
Inventor 吉兼圣展多田祥朗
Owner MAKITA CORP
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