JPS5943080Y2 - Round cutter edge polishing device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cutting edge polishing device for a round cutter.

Conventionally, in the cutting process using a round cutter, when a burr 18 is formed on the cutting edge as shown in Figure 1 due to the use of the round cutter, and the cutting quality deteriorates, the cutting operation is stopped and the round cutter is removed. The shape cutter 1 was removed and re-ground by hand or mechanical polishing to remove the burr 1a at the cutting edge.

Therefore, the cutting operation has to be interrupted every time the burr on the cutting edge is removed, resulting in a disadvantage that the efficiency of the cutting operation is significantly reduced.

Therefore, the purpose of this invention is to create a round cutter that does not require interrupting cutting operations to remove burrs on the cutting edge, and that allows continuous use of the round cutter with the cutting edge well-polished. An object of the present invention is to provide a polishing device.

An embodiment of this invention is shown in FIGS. 2 to 5.

That is, this blade edge polishing device for a round cutter includes a pair of grindstone holders 3.3 each having a shaft attachment part 2 protruding from the side surface of the middle body, and a grindstone 4 held on the inner surface of the front end of each grindstone holder 3.
As shown in Fig. 3, the respective shaft attachment parts 2゜2 are overlapped so that they are stacked in a staggered manner and face each other with the cutting edge of the round cutter 1 in between, as shown in Fig. 3. At the fitting part 2.2, a pin 7 mounted on a support 6.6 attached to the side plate 5 supporting the round cutter 1 is inserted through and attached to the base end of each grindstone holder 3.3. The grinding surfaces of the respective grindstones 4.4 held in the respective grindstone holders 3.3 are pressed against both surfaces of the cutting edge of the round cutter 1, and are ground to a predetermined cutting edge angle α. This is what I did.

A soft plate material 9 made of sponge or the like for removing abrasive grains is attached to both edges of the grindstone holder 3a, which is formed by recessing the inner surface of the front end of the grindstone holder 3 as shown in FIG. The part is stretched so that it slightly protrudes from the grinding surface of the grindstone 4.

In FIG. 5, 10 is a bottle insertion hole into which the bottle 7 is inserted, and 11 is a spring locking hole into which the spring 8 is locked.

With this configuration, as shown in FIGS. 6 and 7, the cutting edge of the round cutter 1 is sandwiched and ground in a staggered manner, and the grinding surface matches the cutting edge angle of the round cutter 1. By the pair of grinding wheels 4.4, which are suppressed and regulated so that they are aligned, the burrs 1 on the cutting edge of the round cutter 1 that occur during the cutting process are polished away in parallel with the cutting rotation, and the cutting process is interrupted. The cutting edge of the round cutter 1 can always be maintained in a sharp state with good cutting quality without causing any damage, and the efficiency of cutting work using the round cutter 1 can be greatly improved.

Since the soft plates 9, 9 are stretched on both side edges of the grinding wheel holding part 3a of the grinding wheel holder 3, the soft plates 9, 9 can remove the grinding grains generated from the grinding wheel 4.
It is possible to prevent the abrasive grains from adhering to the cutting edge of the round cutter 1 and impair the cutting quality, and to obtain a high-quality cut surface.

In addition, by impregnating the grinding wheel 4 with a small amount of lubricating oil before use, it increases the polishing effect and lubricates the gap between the blade tip and the plate during cutting, thereby extending the life of the round cutter 1. However, the soft plate material 9°9 also has the effect of uniformly applying lubricating oil to the cutting edge in such usage examples.

As described above, the round cutter blade edge polishing device of this invention uses a pair of whetstone holders so that the grinding surfaces of the whetstones held in each whetstone holder are ground to each other in a staggered manner to polish the blade edge of the round cutter. The grindstone holders are stacked so as to face each other, and the middle body of each grindstone holder is pivotally connected to the supporting member of the round cutter, and the base ends of each grindstone holder are connected by a spring, so that the grinding surface of the grindstone is fixed. is pressed against the cutting edge surface of the round cutter, so the cutting edge of the round cutter can be polished in parallel while the round cutter is being driven to cut, without interrupting the cutting operation. This has the effect that the round cutter can be used continuously with always good cutting edge conditions, and the efficiency of cutting work can be greatly improved.

[Brief explanation of drawings]

Fig. 1 is an enlarged cross-sectional view of the main part showing the burr that occurs on the cutting edge of a round cutter, Fig. 2 is a perspective view showing an embodiment of this invention, Fig. 3 is its front view, and Fig. 4 is its plan view. Figure 5 is an enlarged perspective view of the main part of the grinding wheel Hoseda, partially cut away;
The figure is a front view showing the positional relationship of the grindstone with respect to the round cutter in the embodiment, FIG. 7 is a side view thereof, and FIG. 8 is an enlarged perspective view of the main part with a part cut away showing the action of the soft plate material. . DESCRIPTION OF SYMBOLS 1... Round cutter, 18... Burr, 2... Shaft attachment part, 3... Grindstone holder, 31... Grindstone holding part, 4...
・Whetstone, 5... fl plate (supporting member), 6... pillar,
7...Bin, 8...Spring, 9...Soft plate material, α...Blade angle.

Claims (1)

[Scope of Claim for Utility Model Registration] CI) A pair of whetstone holders are stacked so that the grinding surfaces of the whetstones held in each whetstone holder are pressed together in a staggered manner and face each other with the cutting edge of a round cutter in between. At the same time, the middle body of each grindstone holder is pivoted to the support member of the round cutter, and the base ends of each grindstone holder are connected with a spring, so that the grinding surface of the grindstone is connected to the cutting edge of the round cutter. A device for polishing the cutting edge of a round cutter, which is characterized by being pressed against the surface. (2) A cutting edge polishing device for a round cutter according to claim 1, wherein a soft material is stretched over the edge of the grindstone holding portion of the grindstone holder.