JPS584642Y2 - Double cutter for woodworking - Google Patents

Description

[Detailed description of the invention] This invention relates to a double cutter for woodworking that is configured to make a handle hole in a part of wood for wooden construction, and its purpose is to cut two holes necessary for two cutting services. The authors have devised a double cutter for woodworking in which two cutting cutters are coaxially mounted so that they can cut independently.

Hereinafter, the first sac flow side embodying the technical idea of the present invention will be described with reference to the drawings.

In FIGS. 1 to 3, W is a piece of wood for wooden construction into which a dovetail-shaped handle hole H is cut, and a reference plane M is cut in the front surface of the handle hole H.

(See Figure 1) Reference numeral 1 denotes an outer cutter having a cylindrical rotating shaft 2, an input pulley 3 is fitted to the other end, and the rotating shaft 2 is rotatably mounted on a fixed bearing stand 4. ing.

Reference numeral 5 denotes an inner cutter having a co-rotating shaft 6, and the co-rotating shaft 6 is secured to a key 7 in the shaft hole 1a of the outer cutter 1 so as to be movable in the axial direction.

The outer cutter 1 has a large cutting outer diameter for cutting a flat surface, and the inner cutter 5 has a small cutting outer diameter d for cutting a dovetail-shaped handle hole H. The handle hole H is molded into a conical shape with a wide
It is possible to cut.

However, during this cutting, it is located at the forward end F as shown by the chain line E in Fig. 2, and when not cutting, it is located at the retreating end R as shown by the solid line in Fig. 2.
It is located within the outer cutter 1.

For this reason, an engagement end 9a of a regulating lever 9 is rotatably engaged with an annular retaining member 8 provided at the other end of the inner cutter 5, and the inner cutter is rotated by rotating the lever 9. Reverse movement is regulated.

Next, the functions and effects of the first embodiment configured as described above will be specifically explained.

First, we will explain the case of cutting the reference plane M on the lumber W for wooden construction. It is retracted at the retraction end R (see the solid line in FIG. 1) 1, which is in the cutting state.

Then, while rotating the outer cutter 1 at high speed using the input pulley 3, a reference plane M is cut into a part of the wood W.

Next, the case of cutting a dovetail-shaped handle hole H will be explained. In this case, the handle hole H is engraved in the following manner.

That is, when the regulating lever 9 is rotated counterclockwise in the figure, the inner cutter 5 is moved along the axis at the forward end Fl on the left side in the figure (see chain line E in FIG. 2).

Therefore, this inner cutter 5, which was contained within the outer cutter 1, is exposed in a state where it can be cut.

Therefore, a predetermined delivery H is engraved from the reference plane M of the wood W using the inner cutter 5.

Thereafter, the above-mentioned operations are performed alternately, and the same handle hole H can be cut into a large number of pieces of wood.

In other words, the gist of the present invention is the configuration described in the claims for utility model registration, and with this configuration, the reference plane and handle hole can be cut centrally into a part of the lumber for wooden construction. , it has the advantage of allowing subsequent wood assembly to be carried out accurately.

In addition, as an embodiment of the engagement means for the outer cutter and the inner cutter, it is also possible to use a spline S as shown in FIG.

[Brief explanation of drawings]

The drawings show each embodiment of the present invention, and Fig. 1 is a perspective view of the wood showing the cutting part, Fig. 2 is a side sectional view, Fig. 3 is a cross-sectional view thereof, and Fig. 4 is a spline section. FIG. Outer cutter...1, Rotating shaft...2,
Inner cutter...5, Co-rotating axis...6,
Key...11 Engagement part...8, Regulation lever...9, Wood...W1 reference surface...
...M1 hole...H0

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A woodworking machine, characterized in that an outer cutter with a large cutting outer diameter and an inner cutter with a small cutting outer diameter are rotatably mounted on the same axis as follows. Heavy cutter. A. The outer cutter is rotatably mounted on a fixed bearing stand. B. The inner cutter is mounted within the outer cutter so that it can rotate together and move in the axial direction. C.Furthermore, the forward end and the backward end of the inner cutter are restricted on the axis via a restricting means. 2. Utility model registration claim 1, characterized in that, as a means for enabling the outer cutter and the inner cutter to rotate together and move in the axial direction, the rotating shafts of the double-handed cutter are keyed so that they can move relative to each other. Double cutter for woodworking as described. 3. Claim No. 3 of the utility model registration, characterized in that, as a means for enabling the outer cutter and the inner cutter to co-rotate and move in the axial direction, the rotating shafts of the double-handed cutters are connected by splines so as to be movable with respect to each other. Double cutter for woodworking as described in item 1. 4. The woodworking tool according to claim 1, characterized in that the forward end and the backward end of the inner cutter are controlled by a regulating lever that is reversibly linked to the rear of the cutter. Heavy cutter.