Drill bit quick-changing device

A technology for changing drill bits and drill bits, which is applied in the direction of positioning devices, tool joints, clamping, etc., can solve the problems of cumbersome drill bit replacement operations, and achieve the effects of avoiding secondary contact, simple overall structure, and preventing iron filings from entering the inside of the clamping block

Pending Publication Date: 2021-09-21
BEIJING TIANZE ELECTRIC POWER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the operation is cumbersome due to the need to use external tools when replacing the drill bit

Method used

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0028] A quick-change d...

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PUM

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Abstract

The invention discloses a drill bit quick-changing device. The device comprises a transmission shaft, a clamping block, an outer sleeve and an elastic piece, wherein a mounting groove of the transmission shaft is used for mounting a drill bit, the transmission shaft is sleeved with the outer sleeve, the transmission shaft is sleeved with the elastic piece, the fixed end of the elastic piece is fixedly connected with the transmission shaft, and the elastic piece is compressed when the outer sleeve moves towards the rear end of the transmission shaft; the transmission shaft is provided with an installation hole internally provided with a groove positioning face, the clamping block is installed in the installation hole and makes contact with the groove positioning face, and the portion, making contact with the drill bit, of the clamping block is provided with a chamfer matched with the chamfer of the drill bit; and the outer sleeve covers the clamping block, when the outer sleeve moves towards the rear end of the transmission shaft to a set position, a space for the clamping block to move in the radial direction of the transmission shaft is reserved, and when the outer sleeve moves towards the front end of the transmission shaft to the set position, the clamping block is extruded. The drill bit quick-changing device aims at solving the problem that when the drill bit is changed, the operation is tedious due to the fact that external tools are needed.

Description

technical field [0001] The invention belongs to the technical field of railway rail drilling, and in particular relates to a quick-change drill bit device. Background technique [0002] The rail drilling machine is a machine tool specially used for drilling railway rails. When the gasoline engine rotates at high speed, the torque of the rail drilling machine is transmitted to the gearbox through the clutch, and the output shaft of the gearbox is equipped with a drill bit, so that the drill bit rotates at a speed of 80-130r / min. At the same time, the control handle of the vibrating feed mechanism drives the drill bit to feed or retract through the transmission system of worm gear, rack and pinion, and completes the rail drilling operation. [0003] Since the drilling object of the drilling machine is a steel rail, the drill bit of the drilling machine is worn out during the whole operation process and needs to be replaced regularly. At present, the quick-change technology u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/00B23B51/12
CPCB23Q3/00B23B51/12
Inventor 翟艳英黄桂宏全伟
Owner BEIJING TIANZE ELECTRIC POWER GRP CO LTD
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