Portable machine tool with automatic locking of the work spindle
First Claim
1. Portable machine tool, in particular an angle grinder, comprising:
- a drive,a work spindle having a tool clamping means,a securing device which is operable from outside an apparatus housing and by means of which the tool clamping means is transferable from a manually releasable position to a manually unreleasable position in which the tool is clamped and vice versa,a locking device for non-rotatably fixing said work spindle in a non-rotatable manner on said apparatus housing, andmeans for coupling said tool securing device and said locking device for fixing said work spindle in said non-rotatable manner when said securing device is operated for transferring said tool clamping means from said manually unreleasable position to said manually releasable position and for releasing said work spindle when said tool clamping means is operated for transferring said tool clamping means from said manually releasable position to said manually unreleasable position.
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Accused Products
Abstract
In order to so improve a portable machine tool, in particular, an angle grinder, with a drive, with a work spindle having a tool clamping means and with a securing device which is operable from outside an apparatus housing and by means of which the tool clamping means is transferable from a manually releasable position to a manually unreleasable position in which the tool is clamped--and vice versa--that with a design which is as simple as possible from a structural point of view, rotation of the work spindle is not possible while the tool clamping means is being released or manually tightened, it is proposed that a locking device for non-rotatably fixing the work spindle on the apparatus housing be provided and that the locking device automatically lock the work spindle in a non-rotatable manner when the drive is switched off and the securing device is i the position in which the tool clamping means is manually releasable--and vice versa.
104 Citations
13 Claims
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1. Portable machine tool, in particular an angle grinder, comprising:
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a drive, a work spindle having a tool clamping means, a securing device which is operable from outside an apparatus housing and by means of which the tool clamping means is transferable from a manually releasable position to a manually unreleasable position in which the tool is clamped and vice versa, a locking device for non-rotatably fixing said work spindle in a non-rotatable manner on said apparatus housing, and means for coupling said tool securing device and said locking device for fixing said work spindle in said non-rotatable manner when said securing device is operated for transferring said tool clamping means from said manually unreleasable position to said manually releasable position and for releasing said work spindle when said tool clamping means is operated for transferring said tool clamping means from said manually releasable position to said manually unreleasable position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification