JPS5854962B2 - Vibration cutting tool cutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutter of a vibrating cutting tool that cuts by vibrating the cutter with minute amplitude.

Such a vibratory cutting tool has the advantage that several types of operations can be performed by changing the cutter.

However, since these cutters of various shapes are made of one piece each, it is necessary to replace the cutter for each job, and when replacing the cutter, the washer and nut must be removed, which is time-consuming and unnecessary. There were problems such as the risk of losing the cutter when it is not used.

In view of the above points, the present invention aims to enable a single cutter to perform several types of work.

Figures 1 to 3 show a vibration cutting tool, in which 1 is a housing with a built-in motor (not shown), 2 is an inner cover,
3 is a front cover, and a saw cover 4 is integrally formed in front of the front cover.

5 is a base attached to the bottom of the inner cover 2 and the front cover 3; 6 is a switch for rotating the motor; 1 is a motor shaft rotatably supported by the inner cover 2, the tip of which is eccentric.

8 is a balance weight attached to the motor shaft 7;
A crank arm 9 converts the rotational motion of the motor shaft 7 into a reciprocating motion, and a spindle 10 rotatably supported by the inner cover 2 and the front cover 3 is below the crank arm.
is installed.

A screw 11 is cut into the tip of the spindle 10.

12 is a sleeve attached to the spin lower lever 10,
At its tip, a locking piece 1 is attached as shown in detail in FIGS. 4 and 5.
3 is installed protrudingly.

Reference numeral 14 denotes a stopper attached to the spindle 10, and as shown in detail in FIGS. 6 and 7, a groove 15 is provided at a position facing the locking piece 13.

16 is a nut screwed onto the tip screw 11 of the spindle 10; 17 is the sleeve 12, the stopper 14 and the nut 1;
The cutter is attached to the spindle 10 via the spindle 10, and is provided with an engagement hole 19 that engages with the spindle attachment hole 18 and the locking piece 13, as shown in detail in FIG.

Further, a straight line cutting blade 20, a groove cutting blade 21, and a curved cutting blade 22 are provided on the peripheral edge thereof, respectively.

To replace the cutting blade of the cutter 17, loosen the nut 16, and connect the groove 15 of the stopper 14 and the locking piece 1 of the sleeve 12.
This can be easily done by disengaging the cutter 17 from the cutter 17 and leaving it in the state shown in FIG. 9.

FIG. 10 shows an example of cutting using the straight cutting blade 20,
A cut is made in the direction of A from the middle of the workpiece W, and after the base 5 comes into contact with the upper surface of the workpiece W, the cut is made in the direction of B.

When cutting, the cut can be made perpendicular to the workpiece W, so the cutting start surface becomes perpendicular.

FIG. 11 shows an example of cutting using the groove cutting blade 21, in which a groove is cut by pushing down the workpiece W in the direction C from above.

By performing this operation three or four times, the triangular or square holes shown in FIG. 12 can be formed.

FIG. 13 shows an example of cutting using the curved cutting blade 22,
Curve cutting as shown in FIG. 14 becomes possible.

According to the cutter of the present invention as described above, several types of work can be performed with one cutter, making the cutting work more efficient and eliminating the risk of losing the cutter.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a partially sectional side view of a vibration cutting tool, Fig. 2 is a view taken along the line ■-■ in Fig. 1, and Fig. 3 is a cross-sectional side view of a vibration cutting tool. 4 and 5 are side and front views showing the relationship between the spindle and the sleeve, FIGS. 6 and 7 are front and sectional views of the stopper, and FIG. 8 is a front view of the cutter. , FIG. 9 is an explanatory page showing the cutter replacement state, FIGS. 10, 11, and 3.
The figures are front views showing cutting examples using various blades, and FIGS. 12 and 14 are top views showing workpieces cut by the cutting examples shown in FIGS. 11 and 13. In the figure, 1 is the housing, 2 is the inner cover, 3 is the front cover, 4 is the saw cover, 5 is the base, 6 is the switch, 7 is the motor shaft, 8 is the balance weight, 9 is the crank arm, 10 is the spindle, 11 is the screw, 12 is a sleeve, 14 is a stopper, 16 is a nut, 17 is a cutter,
20 is a straight line cutting blade, 21 is a groove cutting blade, and 22 is a curved cutting blade.

Claims (1)

[Claims] 1. In a cutter of a vibrating cutting tool that performs cutting work by slightly vibrating a spindle with a serrated cutter fixedly attached to the tip thereof, the blade portion of the serrated cutter is left with irregularly shaped blades in at least two places on the outer periphery of the blade portion of the serrated cutter. 1. A cutter characterized in that the cutter is formed with a notch, and the blade portion can be appropriately selected and converted and installed according to the cutting operation.