JPS5837606Y2 - Motsukousenban no Katsushinjiku - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a seishin shaft for a wood lathe.

Conventionally, this type of seishin shaft has a base that is screwed into the rotating shaft, and a center protrudes from the center of the front of a plate attached to the front end of the base, and a wooden material is placed on the same imaginary circumference of the plate. It is known that there are four holes for fitting wood screws for fixing the woodwork material to the plate part when processing the end face of the woodwork material.

However, with this configuration, it is not only troublesome as it requires the installation of a rotary ring every time the woodwork material is replaced, but also because the holes are on the same virtual circumference, it is difficult to install the turntable when the woodwork material has a diameter smaller than the circumference. It was not possible to hold it down with the centering shaft, or in the case of woodwork materials having a diameter much larger than the circumference, it was not possible to transmit sufficient rotation to the woodwork material or to securely grip the woodwork material with the centering shaft.

Accordingly, it is necessary to replace and use a matching shaft for each woodwork material having a different diameter, which is inefficient and does not allow quick work.

The present invention was designed to eliminate the above-mentioned drawbacks, and the drawings showing embodiments of the present invention will be described below.

In FIG. 1, a wood lathe A has a fixed base 2 at one end of a workbench rail 1 and a movable base 5 having a stop center 4 at the other end.
A tool rest 3 is slidably provided in the middle, and a cleaning shaft 6 is removably screwed onto the rotating shaft of the fixed base 2.

The first embodiment of the present invention is shown in FIGS. 2 and 3. The seishin shaft 6 has a base 7 that is screwed onto a rotating shaft (not shown), and a plate 8 attached to the front end of the base. has.

At the center of the front surface of the plate portion 8, a conical center 9 is formed to protrude.

Further, on the front surface of the plate portion 8 of the center shaft 6, first and second virtual circumferences 10.11 having different diameters centered on the center 9 are provided.
A plurality of fitting holes 12 and 13 are provided at appropriate intervals on the top.

That is, as shown in FIG. Two fitting holes 12 and 13 are provided at symmetrical positions at the intersections on the vertical line 15, respectively.

The clearing shaft constructed as described above is screwed onto the rotating shaft of the lathe A, and the wooden material C is supported between the center 9 and the above-mentioned comparison center 4, and the centers of both ends are held to perform lace processing.

Further, it is also possible to grip and fix the woodworking material C only on the side of the center shaft 6 and process the end face of the material.

That is, the wood screws are fitted into the fitting holes 12 and 13 provided in the plate part 8 to fix the woodworking material C to the plate part, and the stop center 4 is not used and the material is held in a so-called cantilevered state. be.

(See Fig. 6), in this case, even if the mounting end surface of the woodwork material is larger than the first virtual circumference 10 and smaller than the second virtual circumference 11, or even if it is larger than the second virtual circumference 11, the center shaft 6
You cannot replace them, you can use the same one.

The virtual circumference 10.11 provided with the holes may be divided into appropriate intervals between the center 9 and the peripheral edge of the plate portion.

Next, in Figure 4E5, a Seishin shaft 6 showing a second embodiment of the present invention is shown.
are the same holes as in the first embodiment, that is, fitting holes provided at the intersections of the first imaginary circumference 10 and the imaginary vertical line 15, and at the intersections of the second imaginary circumference 11 and the imaginary horizontal line 14. 12,1
3, a conical fitting protrusion similar to the center 9 is provided at the intersection of the first imaginary circumference 10 and the imaginary horizontal line 14, and at the intersection of the second imaginary circumference 11 and the imaginary vertical line 15, respectively. 16,17 are provided, which together with the center 9 support the wood material during normal lace processing.

At this time, there is no need to fit wood screws into the fitting holes 12 and 13.

(See Fig. 7) By providing the projections 16 and 17, it is no longer necessary to attach a rotary ring for applying rotation to the woodwork material from the conventional shaft.

Further, the seishin shaft of the present invention may be provided with fitting holes and protrusions on a plurality of virtual circumferences provided at regular intervals around the center 9 as in the above example.

With this configuration, when processing a woodwork material by supporting it on the center shaft and stop center, there is no need for a turner due to the action of the protrusion, and when processing the end face of the material, a wood screw can be inserted into the fitting hole. By fitting, the seishin shaft and the woodwork material can be fixed.

As mentioned above, the seishin shaft of the present invention has a plurality of fitting holes 12, 13 and protrusions 16, 17 at appropriate intervals on a number of different virtual circumferences, so it can be used for large or small diameters without replacing the seishin shaft. It can hold any type of woodwork material and has a wide range of uses.Therefore, there is no need to replace the seishin shaft according to the size of the woodwork material as in the past, so it has practical effects such as extremely high work efficiency. be.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a wood lathe having a Seishin shaft of the present invention, Fig. 2 is a front view of the Seishin shaft showing the first embodiment of the invention, Fig. 3 is a longitudinal sectional view of the same, and Fig. 4 is a A front view of the Seishin shaft showing the second embodiment of the present invention, FIG. 5 is a longitudinal sectional view thereof, FIG. 6 is a sectional view of the main part showing the end face processing state, and FIG. 7 shows the normal lace processing state. It is a sectional view of the main part. 6...Seishin shaft, 8...Plate part, 9...
...Center, 10°11...First and second virtual circumferences, 12.13...Hole, 16°17...
···protrusion.

Claims (1)

[Scope of utility model registration request] The center shaft 6 has a center 9 protruding toward the center of the front surface of a plate portion 8 that can be screwed onto the rotating shaft and is attached to the front end.
11... A seishin shaft for a woodworking lathe, characterized in that a plurality of holes 12, 13 and conical protrusions 16, 17 for fitting wood screws are provided on the top.