Angle indicator for sawing machine

Abstract

The present invention is an angle indicator for a sawing machine. The sawing machine has a worktable, a pivot shaft, a saw blade holder fastened to the pivot shaft as the pivoting center thereof and having a motor, and a saw blade connected to the saw blade holder, rotatable by the motor and passing through the worktable. The angle indicator has an angle indicating member having an index zone and a following member. The following member is fixed on the pivot shaft and connected to the angle indicating member. Thereby the saw blade is moved with the saw blade holder, and the following member is pivoted with the saw blade holder by the pivot shaft to result in movement of the index zone when the saw blade holder pivots, so that the displacement of the index zone corresponds to the movement of the saw blade.

Description

BRIEF DESCRIPTION OF THE DRAWING

The present invention will be fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only and thus are not limitative of the present invention and wherein:

FIG. 1 is a perspective view showing a sawing machine in a first embodiment of the present invention;

FIG. 2 is an exploded view of an angle indicator in the first embodiment of the present invention;

FIG. 3 is a sectional view showing the combination of guiding members and a cover in the first embodiment of the present invention;

FIG. 4 is similar to FIG. 3 but showing that the guiding members are moved;

FIG. 5 is a schematic drawing showing an operation status of the sawing machine in the first embodiment of the present invention;

FIG. 6 is a schematic drawing showing the application of an angle indicator in a third embodiment of the present invention; and

FIG. 7 is a perspective view of a table saw in the prior art.

Claims

1. An angle indicator for a sawing machine having a worktable, a pivot shaft, a saw blade holder fastened to said pivot shaft as the pivoting center thereof, pivoted relatively to said worktable so as to synchronously rotate said pivot shaft and having a motor, and a saw blade connected to said saw blade holder, rotatable by said motor and passing through said worktable, said angle indicator comprising: an angle indicating member having an index zone; anda following member fixed on said pivot shaft and connected to said angle indicating member,wherein said saw blade is moved with said saw blade holder, and said following member is pivoted with said saw blade holder by said pivot shaft to result in movement of said index zone of said angle indicating member when said saw blade holder pivots, so that the displacement of said index zone of said angle indicating member corresponds to the movement of said saw blade.

2. Said angle indicator as claimed in claim 1, wherein said angle indicating member further comprises a belt on which said index zone is marked, and a guiding member over which said belt runs and by which said belt is tensed.

3. Said angle indicator as claimed in claim 2, wherein said belt is an elastic member.

4. Said angle indicator as claimed in claim 2, wherein said belt has a plane facing and paralleling said worktable.

5. Said angle indicator as claimed in claim 2, wherein said guiding member comprises two rollers located apart beyond each of two opposite sides of said pivot shaft and two locating members on which said rollers respectively are slipped.

6. Said angle indicator as claimed in claim 5, wherein at least one of said locating members has a body portion on which said roller is slipped, and a rear-end portion connecting with the eccentric part of said body portion and provided with a thread.

7. Said angle indicator as claimed in claim 6, further comprising a cover covering said angle indicating member and provided with an arched face, wherein the radius of said arched face corresponds to the pivoting radius of said following member.

8. Said angle indicator as claimed in claim 7, wherein said locating members are screwed into said cover.

9. Said angle indicator as claimed in claim 1, wherein said following member fixedly connecting with said angle indicating member and has an arched face.

10. Said angle indicator as claimed in claim 1, wherein the included angle between a lateral side of said saw blade and said worktable is changed when said saw blade holder pivots.

11. Said angle indicator as claimed in claim 1, wherein said worktable has a through hole through which said index zone of said angle indicating member is visually accessible.

12. Said angle indicator as claimed in claim 11, wherein said index zone of said angle indicating member has graduations, and said worktable has a pointer disposed in or near said through hole for pointing out one of said graduations of said index zone.

13. Said angle indicator as claimed in claim 1, wherein said sawing machine is a table saw.