JPH02224910A - Cutter with guide roller - Google Patents

Abstract

PURPOSE:To prevent the intrusion of an chip, adhesive, etc., into a gap and to keep a roller rotation well by forming a cover covering the gap of the bearing supporting a guide roller on a rotating shaft on the interposing member which is provided on the rotation shaft between a cutter and the guide roller. CONSTITUTION:An interposing member 4 is located between the lower end face of a cutter 2 and a ball bearing 5, the lower part of a boss part 7 is inserted to an inner race 8, a rotating shaft is composed of a cutter shank and set screw 6 and when the cutter shank is rotated, the cutter 2, interposing member 4 and inner race 8 are integrally rotated and an outer race 9 guides the cutter 2 by rolling the face to be cut. A cover 10 extending to the radial direction from the outer periphery of the boss part 7 is formed on the interposing member 4 to cover the upper part of the gap 11 between the inner race 8 and outer race 9 and a gap 12 is provided between the cover 10 and outer race 9. Even if chips, etc., are faced to the ball bearing 5 along a blade body, they are struck to the cover 10, guided to the external part and the intrusion can be prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutting tool used for chamfering, decorative edges, etc. on the side surfaces of wooden boards, plywood, etc., and specifically relates to a cutter having a blade body and This invention relates to a cutting tool with a guide roller provided on a rotating shaft with a guide roller that guides the cutter by rolling on the surface to be cut.

[Prior Art] As a conventional cutting tool of this type with a guide roller, there is one shown in FIG. 3, for example. In this cutting tool, a cutter 2 having a chamfering blade 3 is attached to one end of a shank 1, and a ball bearing 5 is screwed onto the lower end surface of the cutter 2 by a set screw 6. The outer ring 9 of the ball bearing 5 serves as a guide roller that rolls on the surface A to be cut and guides the cutter 2.

[Problems to be Solved by the Invention] When such a cutting tool with a guide roller is used, chips of wood boards, plywood, etc. cut by the blade body 3, adhesive of the plywood, etc. are rolled along the blade body 3. Since it hits the bearing 5, there is a risk that chips, adhesive, etc. may enter the gap 11 between the inner ring 8 and the outer ring 9 of the ball bearing 5, thereby interfering with the rotation of the outer ring 9, which is a guide roller.

Note that a sealed bearing can be used to prevent chips, adhesive, etc. from entering the gap between the bearings, but a sealed bearing has the problem of high rotational resistance and a low speed limit.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cutting tool with a guide roller that can prevent chips, adhesives, etc. from entering into the gap of the bearing during use, and can maintain good rotation of the guide roller. .

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a cutter having a blade body and a guide roller that rolls on a surface to be cut and guides the cutter on a rotating shaft. In the cutting tool with a guide roller, an intervening member is provided on the rotating shaft between the cutter and the guide roller, and a cover is formed on the intervening member to cover a gap between a bearing that rotatably supports the guide roller with respect to the rotating shaft. The gist is to do so.

[Function] When using the cutting tool with a guide roller of the present invention,
Even if the chips of the workpiece scraped by the blade head toward the bearing, they hit the cover of the intervening member and are guided outward, making it difficult for the chips to enter the gap between the bearings.

[Example] Hereinafter, an example in which the present invention is embodied in a cutting tool with a guide roller for chamfering will be described with reference to Fig. 1.2.

As shown in FIG. 1, a cutter 2 is attached to one end of the shank 1, and a pair of chamfering blades 3 are fixed to the cutter 2. An intervening member 4 and a ball bearing 5 are screwed onto the lower end surface of the cutter 2 with a set screw 6. That is, as shown in FIG. 2, with the boss portion 7 of the intervening member 4 and the inner ring 8 of the ball bearing 5 inserted into the set screw 6, the intervening member 4 and the ball bearing 5 are placed under the cutter 2. It is clamped between the end face and the head of the set screw 6. The intervening member 4 is located between the lower end surface of the cutter 2 and the ball bearing 5, and its boss portion 7
The lower part of the inner ring 8 is inserted into the inner ring 8.

Note that the shank 1 and the set screw 6 constitute a rotating shaft, and when the shank 1 rotates, the cutter 2 and the intervening member 4
The inner ring 8 of the ball bearing 5 and the inner ring 8 of the ball bearing 5 rotate together. The outer ring 9 of the ball bearing 5 serves as a guide roller that rolls on the surface A to be cut and guides the cutter 2.

In particular, a cover 10 is formed on the intervening member 4 and extends from the entire outer periphery of the boss portion 7 in the radial direction of the shank 1.
The upper part of the gap 11 between the inner ring 8 and the outer ring 9 is covered. A gap 12 is provided between the cover 10 and the outer ring 9.

When a cutting tool with a guide roller configured as described above is used, the outer ring 10 of the ball bearing 5, which is a guide roller, contacts and rolls on the surface A to be cut, and the cutter 2 is guided along the surface A to be cut. At the same time, the cutter 2 is rotated by the rotational drive of the shank 1, and the blade 3 chamfers the corner of the workpiece.

In the cutting tool with a guide roller of the present embodiment, even when the chips and the like of the workpiece are moved along the blade body 3 toward the ball bearing 5, they hit the cover 10 of the intervening member 4 and are guided outward. It is possible to prevent chips from entering the gap 11 of the ball bearing 5. Therefore, the rotation of the outer ring 9, which is a guide roller, can be maintained in a good manner.

Note that although the cutting tool with a guide roller in this example is equipped with a cutter for chamfering, other
It may be embodied in a device equipped with a cutter for decorative edge processing.

[Effects of the Invention] As detailed above, in the present invention, the cover of the intervening member can prevent chips of the workpiece from entering into the gap of the bearing, and the rotation of the guide roller can be maintained in good condition. .

[Brief explanation of the drawing]

FIG. 1 is a front view showing a cutting tool with a guide roller for chamfering which is an embodiment of the present invention, FIG. 2 is a partial sectional view of the same, and FIG. The front view shown in FIG. 4 is also a partial sectional view.

Claims (1)

[Claims] 1. A cutter (2) having a blade body (3) and a cut surface (
A) A cutting tool with a guide roller in which a guide roller (9) that rolls on the rotating shaft (1, 6) and guides the cutter (2) is provided on the rotating shaft (1, 6), in which the cutter (2) and the guide roller ( 9) between the rotating shafts (1, 6) and the intervening member (4).
), and this intervening member (4) is provided with a guide roller (9).
A bearing (5) rotatably supports the rotating shaft (1, 6).
) A cutting tool with a guide roller, characterized in that a cover (10) is formed to cover a gap (11) between the two.