JPH09756A - Auxiliary chamfering tool for board cutter - Google Patents

Abstract

PURPOSE: To provide an auxiliary chamfering tool of a board cutter capable of bringing the sharp blade tip of a cutter knife in contact with a cutting surface at all times and freely selecting the cutting direction of a board. CONSTITUTION: This auxiliary tool main body 11 is formed by two planes folded to an approximately right angle, cut-off parts 21a and 21b are inclined and formed on the folded part of the auxiliary tool main body 11 and chip take-out grooves 22a and 22b are formed respective continuously to the cut-off parts 21a and 21b. Formation is performed so as to form respective boundary parts 23a and 23b with an acute angle to the longitudinal direction of the auxiliary tool main body 11 and to make them be in opposite directions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering auxiliary tool for a board cutter which holds a cutting edge of a gypsum board or the like used as a wall material of a building when chamfering the peripheral edge with a cutter knife. .

[0002]

2. Description of the Related Art As a wall material for houses and the like, gypsum board is often used because it is flame-retardant and easy to process. In order to finish the joint surface between the wall materials in the attachment of the wall material to be flat, the peripheral edge portion of the wall material is chamfered, and the substantially V-shaped groove of the joint surface formed by this is filled with putty. Finish by pasting a cloth on the surface. Therefore, after cutting the wall material to a desired size, it is necessary to chamfer the corners of the peripheral edge portion. Conventionally,
For this chamfer, a dedicated chamfer plane 7 formed in a plane shape as shown in FIG. 7 is used. This chamfered plane 7 includes a slide groove 72 provided on the bottom surface of the plane body 71, with which the peripheral edge of the board comes into contact, a cutter mounting surface 74 inclined to the top surface of the plane body 71, and a cutter mounting surface 74. A chip removal groove 77 formed by reaching the sliding groove 72,
The cutter 73 is fixed to the cutter mounting surface 74, a fixing plate 75 that fixes the cutter 73, and a fixing bolt 76. The cutter mounting surface 74 is formed at an acute angle to the sliding groove 72 in the horizontal direction, and the cutter 73 is also fixed along this angle. As shown in FIG. 8, since the paper 10a is pasted on the surface of the gypsum board 10, in order to chamfer the paper 10a so as not to peel it off, the cutter 73 fixed at an inclination is fixed to the plaster board 10. Chamfering is performed by pressing the paper 10a from the upper surface.

[0003]

However, in the above chamfered plane, since the non-combustible material such as plaster is cut, the cutter cannot be cut in a short period of time, and the mounting screw is frequently removed to move the cutting edge of the cutter. There was a problem that the cutter had to be replaced or the cutter itself had to be replaced. In addition, in order to cut the paper on the surface of the gypsum board without peeling it off, the direction in which the cutter is applied is limited to one direction, and there is a problem that it is inconvenient depending on the state of the work site. The present invention has been made in view of the above problems, and when chamfering a peripheral edge of a gypsum board or the like using a cutter knife, the sharp cutting edge of the cutter knife always hits the cut surface, and the board is cut. It is an object of the present invention to provide a chamfering auxiliary tool for a board cutter whose direction can be freely selected.

[0004]

For this reason, in the present invention, an auxiliary tool main body composed of two flat surfaces formed by folding back at a substantially right angle, and a cut-out portion inclined to the folding back portion of the auxiliary tool main body, The chip taking-out groove is provided continuously to the cut-out portion, and the boundary portion between the cut-out portion and the chip taking-out groove is formed with an acute angle with respect to the longitudinal direction of the auxiliary tool body. It was done like this.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. Example 1 FIG. 1 is a partial perspective view showing a state in which a gypsum board is chamfered by a chamfering auxiliary tool of Example 1 according to the present invention, and FIG. 2 is a perspective view of the chamfering auxiliary tool of Example 1.

As shown in FIG. 2, a chamfering assisting tool 1 of the present embodiment has an assisting tool body 11 formed by two planes folded back at a right angle, and a grip 12 protruding in the center of the assisting tool body 11.
And the cutting portions 2a and 2b formed on both sides of the handle 12.

The cutting portion 2a is formed by a cut-out portion 21a which is formed so as to be inclined at the folded-back portion of the auxiliary tool main body 11 and a chip taking-out groove 22 which is formed continuously from the cut-out portion 21a.
a and a cutter 3 is provided at a boundary portion 23a between them.
The blade edge 31 of is contacted.

The cutting portion 2b is formed substantially symmetrically with the cutting portion 2a, and has a cutting portion 21b, a chip taking-out groove 22b, and
It is composed of those boundary portions 23b.

The boundaries 23a and 23b are formed so that the angles thereof are acute with respect to the longitudinal direction of the auxiliary tool body 11, and as shown in FIG. 1 (a), the cutting edge 31 of the cutter 3 is relative to the gypsum board 10. The paper 10a on the surface of the lever is slanted in the direction of pressing it from above. Therefore, the boundary portion 23a of the cutting portion 2a and the boundary portion 23b of the cutting portion 2b are formed so as to be in directions opposite to each other with respect to the longitudinal direction of the auxiliary tool body 11, as shown in FIG.

Next, the operation of this embodiment will be described.
Holding the handle 12 with one hand, as shown in FIG. 1 (a), the inside of the auxiliary tool body 11 is brought into contact with the corner of the peripheral edge of the gypsum board 10. Holding the cutter knife with the other hand, the side surface of the cutter 3 is applied to the cutout portion 21b to set the chamfering angle. At this time, the cutter 3 selects the position of the cutting edge 31 so that a well-cut, well-cut surface is located at the boundary portion 23b. The chamfering aid 1 is slid along the peripheral edge of the gypsum board 10. As shown in FIG. 1 (b), sliding the chamfering aid 1 causes the cutting edge 31 of the cutter 3 to press the surface paper 10 a against the gypsum board 10 from above, and the surface paper 10 a is peeled off. Instead, the corners of the gypsum board 10 are chamfered. The chips 10b scraped off by the cutter 3 are separated and taken out from the chip taking-out groove 22b.

As shown in FIG. 2, the cutting portion 2b and the cutting portion 2
Since a is formed substantially symmetrically, two cutting directions can be selected. As a result, the cutting edge 31 of the cutter 3 can be applied to the gypsum board 10 in a direction in which the surface paper 10a is pressed from above, regardless of the situation at the work site.

Embodiment 2 FIG. 3 is a perspective view of a chamfering assisting tool according to Embodiment 2 of the present invention. As shown in FIG. 3, in the chamfering assisting tool 4 of the present embodiment, the assisting tool main body 41 is bent outward with the mounting portion of the handle 42 as the center. As a result, the cutting portion 43a or the cutting portion 43b on the side not used is the gypsum board 1
No contact with the peripheral edge portion of 0 can be prevented from being caught in the unevenness of the peripheral edge portion.

Third Embodiment FIG. 4 is a perspective view of a chamfering assisting tool according to a third embodiment of the present invention. As shown in FIG. 4, the chamfering aid 5 of this embodiment
Is a pair of connecting portions 53 having different sizes on both sides of the handle 52.
a, 53d and connecting / disconnecting portions 53b, 53c are provided so that the width of the chamfered surface can be selected depending on the thickness of the gypsum board to be chamfered.

Fourth Embodiment FIG. 5 is a partially enlarged perspective view of a chamfering assisting tool according to a fourth embodiment of the present invention. As shown in FIG. 5, the chamfering aid 6 according to the fourth embodiment is provided with a cutting edge insertion groove 61 continuous to the cutout portion 62 at the boundary portion 63. By inserting the blade tip 31 of the cutter 3 into the blade tip insertion groove 61, it is possible to prevent the cutter 3 from coming off due to a reaction force received from the board during chamfering.

Embodiment 5 FIG. 6 is a partially enlarged perspective view of a chamfering assisting tool according to Embodiment 5 of the present invention. As shown in FIG. 6, the auxiliary tool main body 81 of the chamfering auxiliary tool 8 of the present embodiment has a connecting / disconnecting portion 82 having a different shape,
83 is provided. That is, the cutout portion 82a of the connecting / disconnecting portion 82 is formed at an inclination angle such that the first plane 8a side of the auxiliary tool body 81 is deep and the second plane 8b side is shallow. On the other hand, the cutout portion 83a of the connecting / disconnecting portion 83 is formed so that the first plane 8a side and the second plane 8b side have substantially the same inclination angle. Thereby, the disconnecting portion 83
When chamfering by applying the cutter 3 to the chamfered surface, the chamfered surface is scraped off at an angle of about 45 degrees. In particular, when the wall material is fitted into the hiccup part such as a pillar or a floor board, the play can be reduced by making the angle of the chamfered surface shallow. Therefore, the connecting / disconnecting portion 82 and the connecting / disconnecting portion 83 having different shapes can be selectively used depending on the purpose of chamfering.

[0016]

According to the present invention, the configuration is as described above.
When chamfering the peripheral edge of gypsum board etc. using a cutter knife, by making sure that the sharp cutting edge of the cutter knife always contacts the cutting surface, the excellent effect that the chamfering can be finished efficiently and cleanly is there. Further, since the cutting direction can be freely selected, there is an excellent effect that the chamfering work can be efficiently and surely performed even if the work site is narrow or the posture of the worker is limited.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing a state in which a gypsum board is chamfered by a chamfering auxiliary tool according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a chamfering auxiliary tool according to the first embodiment.

FIG. 3 is a perspective view of a chamfering auxiliary tool according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a chamfering assisting tool according to a third embodiment of the present invention.

FIG. 5 is a partially enlarged perspective view of a chamfering assisting tool according to a fourth embodiment of the present invention.

FIG. 6 is a partially enlarged perspective view of a chamfering assisting tool according to a fifth embodiment of the present invention.

FIG. 7 is a perspective view of a conventional chamfered plane.

FIG. 8 is a partial perspective view showing a state in which a gypsum board is chamfered by a chamfering plane of the prior art.

[Explanation of symbols]

 1 Chamfering auxiliary tool 11 Auxiliary tool main body 12 Handle 2a Cutting part 21a Cutting part 22a Chip removal groove 23a Boundary part 2b Cutting part 21b Cutting part 22b Chip removal groove 23b Boundary part 3 Cutter 31 Blade tip 4 Chamfering prosthesis 41 Auxiliary tool Main body 42 Handle 43a Cutting part 43b Cutting part 5 Chamfering aid 51 Auxiliary tool Main body 52 Handle 53a Cutting part 53b Cutting part 53c Cutting part 53d Cutting part 6 Chamfering aid 61 Cutting edge insertion groove 62 Cutting part 63 Boundary Part 7 Chamfer plane 71 Plane body 72 Sliding groove 73 Cutter 74 Cutter mounting surface 75 Fixing plate 76 Fixing bolt 77 Chip removing groove 8 Chamfering auxiliary tool 8a First flat surface 8b Second flat surface 81 Auxiliary tool body 82 Cutting part 82a Cutout Part 83 Cutting / disconnecting part 83a Cutting part 10 Gypsum board 10a Paper 10b Cutting Waste

Claims (5)

[Claims] 1. An auxiliary shell main body formed by folding back at a substantially right angle and formed of two planes, a cut-out portion provided obliquely to the folded-back portion of the auxiliary tool main body, and a continuous portion provided to the cut-out portion. A chamfering aid for a board cutter, comprising a chip taking-out groove, and a boundary portion between the cutting portion and the chip taking-out groove is formed at an acute angle with respect to the longitudinal direction of the auxiliary tool body. Ingredient 2. The auxiliary tool main body is provided with at least two sets of cutout portions and chip removing grooves, and at least a pair of boundary portions are formed so as to be opposite to the longitudinal direction of the auxiliary tool main body. The chamfering auxiliary tool for the board cutter according to claim 1, wherein 3. The board according to claim 2, wherein the main body of the auxiliary tool is bent outward at at least one place, and at least two sets of a cutout portion and a chip taking-out groove are provided outside the bent portion. Chamfering aid for the cutter. 4. The chamfering auxiliary tool for a board cutter according to claim 1, wherein a cutting edge insertion groove for inserting the cutting edge of the cutter is provided continuously to the cutout portion. 5. The auxiliary tool main body is provided with at least two sets of cutout portions and chip removal grooves, and the inclination angles of the cutout portions with respect to one plane of the auxiliary tool main body are different from each other. The chamfering auxiliary tool for the board cutter according to claim 1.