JPS6133653B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a spiral planer blade.

The present applicant has previously developed a new spiral-shaped planer blade and filed an application for registration of a utility model, and the present invention provides a method for manufacturing the spiral-shaped planer blade. Before establishing embodiments of this invention,
The outline of this spiral planer blade will be explained using FIGS. 10 to 12.

As is clear from FIGS. 10 and 11, this planer blade has a spiral shape in which the circumferential wall of one hollow cylinder has a constant width in the circumferential direction and the inner radius R of the hollow cylinder is the helical radius. A cutting edge tip 2 is welded along an edge line extending in the longitudinal direction on the outer circumferential side of a base metal part 1 cut into a shape. A mounting hole 3 is formed. As shown in Fig. 12, this spiral planer blade is attached to the outer periphery of a rotating shaft 4 with a radius R using mounting holes 3 at two to three equally spaced positions in the circumferential direction, and is mainly used for rotation in woodworking. It is used as a cutlery, and the 12th
What is shown by 6 in the figure is a relief groove for machining that is bored on the outer circumferential surface of the rotating shaft 4 along this spiral planer blade.

Now, a method according to an embodiment of the present invention will be explained with reference to FIG. 1 and subsequent figures. As mentioned above, it is important that the spiral planer blade to which the method of the present invention is applied has a base metal part 1 having a special shape, that is, it has a spiral shape with a spiral radius R. For this reason, the first step is to cut out the hollow cylindrical body 10 (FIGS. 1 and 2) for cutting out such a base metal part.
The inner and outer peripheral surfaces of the cylindrical body 10 are ground. The dimensions of this hollow cylindrical body 10 are, of course, that the inner diameter is 2R and the outer diameter is (2R+
2×thickness of base metal part).

The second step is the formation of the attachment hole 3. Although it is difficult to drill holes after cutting into a spiral shape from the standpoint of holding the workpiece, it is natural to drill the attachment holes 3 in this hollow cylindrical body 10. Of course, these mounting holes 3 should be formed in line in the longitudinal direction of the spiral planer blades that will be cut out in the future to form individual base metal parts 1, and correspond to the number n of spiral-shaped base metal parts to be cut out and formed. Then n
The holes are formed in spirally arranged positions in rows (six rows in the illustrated example).

Next, the third step is to cut a cutting edge tip mounting groove 5 as a recess into which the cutting edge tip 2 is to be welded, as shown in FIGS. 5 and 6. N cutting edge tip attachment grooves 5 may be formed on the outer periphery of the hollow cylindrical body 10 along the spiral arrangement of the attachment holes 3 using a cutter.

In the next fourth step, as shown in FIG.
This is the process of fixing the After n cutting edge tips 2 are positioned in the same grooves corresponding to the number of cutting edge tip mounting grooves 5, they are fixed by, for example, brazing.

Next, in the fifth step, as shown in FIG. 8, the hollow cylindrical body 10, in which the necessary elements such as attachment holes and cutting tips have been formed, is cut and separated into n spiral planer blades. For this purpose, as shown in Fig. 8, the cutter 12 is placed close to the cutting edge tip 2, and the cutter 12 is moved in the axial and circumferential directions determined by calculation so that the cutting locus becomes a predetermined spiral shape. It is sufficient to cut while applying feed.

After this cutting and separation process is completed, n spiral planer blades are produced, and as shown in FIG.
The tip portion 2A is sharpened by polishing, and the relief recess 7 is also ground. Of course, necessary heat treatments such as quenching must be performed.

According to this invention as detailed above ()
N spiral-shaped planer blades are formed at once, making it extremely efficient.In addition, machining of mounting holes, etc., is done all at once when forming a hollow cylindrical body, making it easy to process.This results in accurate positioning and high machining accuracy. There are many effects such as improvement.

[Brief explanation of the drawing]

1 to 9 are side views or cross-sectional views showing each step of the method of the present invention, in particular, FIG. 2 is taken along the - line of FIG. 1, and FIG. 4 is taken along the line - of FIG. 3. along the line, and Figure 6 is along the − of Figure 5.
FIG. Figures 10 and 11
The figures are a side view and an end view of a spiral planer blade, which is the target product of this invention, and a 12th
The figure is a side view showing a spiral planer blade attached to a rotating shaft. 1...Base metal part of spiral planer blade, 2...
Same cutting edge tip, 3... mounting hole, 5... cutting edge tip mounting groove, 10... hollow cylindrical body.

Claims (1)

[Scope of Claims] 1 (a) The spiral wire diameter of the spiral planer blade to be manufactured is the inner diameter, and the outer diameter is the value obtained by adding twice the thickness of the base metal portion of the planer blade to this inner diameter value. (b) Drilling n rows of spirally arranged mounting holes (n is the number of planer blades to be manufactured from one hollow cylinder) in the peripheral wall of the hollow cylinder; (c) cutting n spiral-shaped cutting edge tip mounting grooves in the outer peripheral wall of the hollow cylinder along the row of the mounting holes; (d) cutting edge tip mounting grooves into each of the cutting edge tip mounting grooves; a step of fixing a spiral cutting edge tip; (e) a step of cutting and separating the hollow cylinder into n spiral shapes so that each of them includes the mounting hole and the cutting edge tip arranged in a spiral shape; ) A method for manufacturing a spiral planer blade, comprising: the step of polishing the cutting edge tip.