JPS6234723Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is a planer that uses a replaceable blade, which can be reused by changing the direction of the replaceable blade, and by changing the size of the replaceable blade, the planer blade can be exposed on the underside of the planer stand. The present invention relates to a replaceable blade plane that is adjustable in quantity and easy to handle.

Conventional planes of this kind generally have a single blade in the form of a plate, which causes damage to the blade quickly and requires replacement with a new blade each time the blade is damaged. In addition, it is necessary to adjust the amount of exposure of the plane blade to the underside of the plane stand depending on the work content, but with conventional general planes in which the plane blade is slanted so as to face the exposed opening on the underside of the plane stand, it is difficult to use a hammer, etc. Since adjustments are made by tapping the plane blade and plane stand, there is a lot of reliance on intuition, which takes time and effort, and also has the disadvantage that fine adjustment is difficult and requires skill. Therefore, the object of this invention is to provide a convenient plane that eliminates the above-mentioned drawbacks of the conventional plane.

Hereinafter, embodiments of this invention will be described based on the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a planer stand made of aluminum, plastic, wood, etc., and a recess 2 having an inverted triangular shape when viewed from the side is formed approximately in the center of the planer stand 1. The lower end of 2 penetrates the lower surface of the plane stand 1 to form an opening 3 for exposing the plane blade.
Further, a fitting groove 4 into which a part of the plane blade is fitted is formed at the lower end of the rear inclined surface 2a of the concave portion 2 so as to form a part of a triangle when viewed from the side, and furthermore, the inclined surface A pair of screw holes 5 are bored above the fitting groove 4 of 2a.

Reference numeral 6 denotes a replaceable planer blade made of carbon steel, cemented carbide, or the like. Then, a long groove 8 is cut in front of it. As shown in FIG. 3, this plane blade 6 has several types of similar shapes with different sizes, for example, three types of plane blades 6a, 6.
6a for rough finishing, 6b for medium finishing, and 6c for finishing in order of size.

Reference numeral 9 denotes a backing plate as a back blade, and a fitting groove 10 in which a part of the planer blade 6 is fitted in the lower end of this fitting plate 9, corresponding to the fitting groove 4, is formed in a triangular shape when viewed from the side. formed to constitute a section. The lower end of one side 10a of this triangular fitting groove 10 is brought into contact with the upper end of the fitting groove 8a of the planer blade 6 located below, so that the one side 10a of the triangular fitting groove 10 does not cover the fitting groove 8a, and the planer chips are removed. The liquid is discharged upward along this exposed fitting groove 8a. Incidentally, a through hole 11 is bored in the backing plate 9 corresponding to the screw hole 5 described above. And the plane blade 6
A fitting groove 4 provided in the rear inclined surface 2a in the concave portion 2
and a fitting groove 10 provided on the contact plate 9, and the cutting edge 7 is exposed from the exposure opening 3 to the lower surface of the planer stand 1,
A set screw 1 that passes the plane blade 6 through the through hole 11 of the backing plate 9
2 is screwed into the screw hole 5 to be clamped and fixed. The material of each of the above-mentioned constituent members is not particularly limited, but when the planer stand 1 is made of plastic or wood, the slope of the backing plate 9 and the recessed part 2 to which the backing plate 9 is attached, as shown in FIG. It is desirable that the portion be formed of a metal material.

However, when using the plane of the embodiment having the above configuration, the three types of plane blades 6a to 6 may be used depending on the work content.
Select the most suitable plane blade 6 from c and attach it to the plane stand 1.
This allows you to adjust the amount of exposure of the cutting edge 7 that protrudes from the underside of the planer stand 1, and if the cutting edge 7 is damaged during work, loosen the set screw 12 and remove the contact plate 9, or open the bottom end of it. and move the plane blade 6 in the circumferential direction.
The planer blade 6 is fixed by rotating it 120 degrees and tightening the set screw 12 again, and the work can be continued using the cutting edge 7.

As explained above, according to the plane of this invention,
Prepare several types of plane blades with different sizes and similar shapes in advance, and simply select the most suitable plane blade from among them according to the task and attach it to the plane stand. Since the amount of exposure of the blade edge can be adjusted, adjustment is extremely easy and work efficiency is improved.Also, each plane blade has three cutting edges, so even if the blade edge is damaged, the work can be done simply by changing the direction of the plane blade. In addition, it is convenient to handle, as the plane blade can be replaced or its orientation can be changed by simply loosening the set screw and removing the plate that holds the plane blade.
It has a simple structure, is suitable for mass production, and has the advantage of reducing manufacturing costs.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a plane showing an embodiment of this invention.
FIG. 2 is a plan view of the same, and FIG. 3 is a side view showing three types of plane blades. 1... Planer stand, 2... Concave portion, 2a... Rear side inclined surface, 3
...Exposed port, 4, 10... Fitting groove, 5... Screw hole, 6...
Planer blade, 7...Blade tip, 8...Long groove, 9...Backing plate, 11...Through hole, 12...Set screw.

Claims (1)

[Claim for Utility Model Registration] A bar-shaped member having a substantially equilateral triangular cross section, which is removably held on the inclined surface of a concave portion formed on a planer stand by a backing plate serving as a back blade, and each edge corner is formed as a cutting edge. The planer has a replaceable planer blade fixed with the cutting edge of the planer blade exposed on the underside of the planer stand. This is a replaceable blade type plane, which is characterized in that an appropriate plane blade can be selected and used.