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Locking device for electric tool mandrel

A technology of electric tools and locking devices, which is applied in the direction of manufacturing tools, grinding/polishing safety devices, metal processing equipment, etc., and can solve problems such as complex construction schemes and easy breakage

Inactive Publication Date: 2007-12-12
盖多·瓦伦蒂尼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also means that the construction scheme is complex but easy to break

Method used

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  • Locking device for electric tool mandrel
  • Locking device for electric tool mandrel
  • Locking device for electric tool mandrel

Examples

Experimental program
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Embodiment Construction

[0024] A gearbox 1 as a component for running a machining tool, such as a grinding wheel in a grinding machine, comprises a spindle 2 supported by an inner part 3 of the gearbox 1 via bearings 4 (see FIG. 2 ).

[0025] The toothed wheel 5 is mounted on the spindle 2, and a spring 6 and a preloading device 7 included in the spring 6 are also provided.

[0026] In the embodiment shown in FIGS. 1-5 , the gearbox 1 comprises a front locking device 8 for the spindle 2 .

[0027] The front locking device 8 comprises a rigid body 9 selectively movable between an equilibrium position (see accompanying drawing 2) pressed by a preload spring 10 and a spindle locking position (see accompanying drawing 3), wherein locking Portion 11 engages end 12 of mandrel 2 to prevent rotation therebetween (see FIG. 5 ).

[0028] When the rigid body 9 is in the equilibrium position, the mandrel 2 can rotate freely (see accompanying drawing 4).

[0029] The rigid body 9 is manually pressed in the axia...

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PUM

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Abstract

There is described a locking device for a mandrel shaft (2) of a motorised tool, comprising a rigid body (9) which is selectively mobile between a resting position stressed by elastic means (10) and a locking position of the mandrel shaft (2) wherein a locking portion (11) of said rigid body (9) couples with the end (12) of the mandrel shaft (2) so as to prevent the rotation thereof.

Description

technical field [0001] The invention relates to a locking device for an electric tool spindle. Background technique [0002] In order to replace worn-out machining tools in electromechanical devices, such as grinding wheels in grinding machines, the spindle, which is connected to the tool via a gear drive, must be locked manually. [0003] Known locking devices for spindles act directly on the gears used to transmit the forces of the rotary motion of the spindle to other components up to the aforementioned machining tool. [0004] Furthermore, known machine tools for surface treatment incorporate locking means acting on a clutch integrated into the spindle. [0005] The aforementioned machine tools sometimes also include a spring with a preloading device having a clutch function for adjusting the overload occurring at the periphery of the aforementioned gear. [0006] The device can be manipulated by the operator by means of a button located on the outside, which button ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B55/00
CPCB23Q11/0092Y10T292/096B24B23/022
Inventor 盖多·瓦伦蒂尼
Owner 盖多·瓦伦蒂尼