Patent ID: 9339877
Filing Date: 2016-05-17
CPC Classification: B23B,B23D,B27B,Y10T

Claim Text:
1. An electric mitre saw, comprising: a base; a worktable rotatably connected to said base; a saw unit disposed above said worktable and movable forward and backward relative to said worktable, said saw unit comprising a motor, a planar saw blade rotatable by said motor, and a motor mount; a swing arm pivotally mounted at a rear side of said worktable; wherein a swinging arm guide rod means mounted therein, said guide rod means comprising multiple layers of guide rods respectively horizontally movable forward and backward relative to said swinging arm, each of two adjacent said layers of guide rods being coupled together by a sliding block and movable relative to each other, the farthest layer of guide rods remote from said swinging arm has a rotating shaft mounted therein; said saw unit is pivotally connected to said rotating shaft; said guide rod means comprises at least two first-layer guide rods horizontally mounted to slide in a direction parallel with said worktable in said swinging arm at one lateral side relative to said saw blade, said first-layer guide rods defining a plane through the central axes of the first-layer guide rods which intersects said planar saw blade at a first acute angle; said sliding block slidably coupled to said at least two first-layer guide rods and lockable thereto said guide rod means further comprises at least two second-layer guide rods horizontally coupled to said sliding block at an opposite lateral side relative to said saw blade each rod having a parallel central axis relative to said at least two first-layer guide rods; and said second-layer guide rods defining a plane through the central axes of the second layer guide rods which intersects said planar saw blade at a second acute angle; said rotating shaft is mounted at said at least one second-layer guide rod; said saw unit is pivotally connected to said rotating shaft; said at least two first-layer guide rods and said at least two second-layer guide rods define therebetween a space for the passing of said saw blade.