Cutting depth setting device for a saw machine

#1. Field of Invention

#The present invention relates to a saw machine, and more particularly to a cutting depth setting device for a saw machine.

#2. Related Prior Art

#FIG. 1 is a front plan view of a cutting depth setting device for a saw machine in accordance with the present invention;

#FIG. 2 is an exploded view of the cutting depth setting device as shown in FIG. 1;

#FIG. 3 is a front plan view of the cutting depth setting device in a tilting status;

#Referring to the drawings, and initially to FIGS. 1 and 2, a cutting depth setting device in accordance with the present invention is provided for a saw machine 10 which comprises a base portion 12 having a positioning block 14 protruding therefrom (see FIG. 1), a drive arm 11 pivotally engaged with the base portion 12 about a pivot axle 112, a protruding block 13 projecting from the drive arm 11 and locating above the positioning block 14, a threaded hole 131 vertically defined through the protruding block 13, a circular saw blade 110 rotatably mounted on the drive arm 11 to pivot therewith for cutting a workpiece 80, a working platform 60 mounted beneath the saw blade 110 for holding the workpiece 80.

#The cutting depth setting device comprises an adjusting bolt 21 threadedly extending through the threaded hole 131 of the protruding block 13 to displace vertically relative to the protruding block 13, a head 211 fixedly mounted on an upperside of the adjusting bolt 21 for rotating the adjusting bolt 21, a butterfly nut 22 threadedly mounted around the adjusting bolt 21 and securely urged on an upperside of the protruding block 13 to fix the adjusting bolt 21 in position, a cap nut 23 threadedly engaged on a lowermost portion of the adjusting bolt 21, a pair of washers 26 mounted around the adjusting bolt 21 and located above the cap nut 23, a pointer 27 mounted around the adjusting bolt 21 and pivotally engaged between the pair of washers 26 so as to move vertically with the adjusting bolt 21, a fastening nut 24 threadedly mounted around the adjusting bolt 21 and urged against one of the pair of washers 26. It is appreciated that the cap nut 23 is able to abut against an upperside of the positioning block 14 when the drive arm 11 is rotated counterclockwise about the pivot axle 112.

#A first panel 31 is movably mounted on the drive arm 11 along a vertical direction thereof, a pair of elongated openings 312 are respectively defined in an upper portion and a lower portion of the first panel 31 and an elongated slot 311 is defined therebetween, a bolt 33 extending through a washer 331 and the elongated slot 311 and threadedly engaged in a hole 16 defined in the drive arm 11 such that the first panel 31 is able to move up and down vertically on the drive arm 11, a pair of flanges 17 vertically formed on the drive arm 11 and respectively received in a corresponding opening 312 for limiting excess movement of the first panel 31. The first panel 31 has a flat surface 313 partially received in a recess 271 which is defined in the pointer 27, whereby, when the adjusting bolt 21 is rotated to move up and down, the pointer 27 is pivoted therewith and is limited by the flat surface 313 to move up and down vertically with the adjusting bolt 21, the flat surface 313 has a plurality of equi-distanced graduations 314 formed thereon, one of the which is able to align with the pointer 27. A second panel 32 is movably mounted on the drive arm 11 and enclosed on the first panel 31, and a plurality of equi-distanced numerals 323 are formed on the second panel 32 for respectively aligning with the plurality of graduations 314. Preferably, an elongated slot 321 is vertically defined in the second panel 32 and aligns with the elongated slot 311 in the first panel 31, a bolt 34 extending through a washer member 341 and the elongated slot 321 and threadedly engaged in a hole 18 which is defined in the drive arm 11 located above the upper flange 17, such that the second panel 32 is movable relative to the drive arm 11, a guiding member 19 vertically formed on the drive arm 11, a channel 322 vertically defined in the second panel 32 for receiving the guiding member 19 therein such that the second panel 32 is able to move vertically relative to the drive arm 11.