JP2000037706A - Cutter for planer and method for planing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease a power necessary for cutting by decreasing cutting resistance caused by shapes of a blade body and a blade base. SOLUTION: A cutter C for a plane base is provided with a fitting block 1 with a fitting hole 10 for fitting on a rotating shaft, a plurality of blade bases 2, 2a, 2b and 2c spaced uniformly in the peripheral direction on its outer peripheral part and blade bodies 3, 3a, 3b and 3c respectively fitted on the blade bases 2, 2a, 2b and 2c. A through-hole 15 passing through the fitting block 1 is provided in the peripheral direction of the fitting block 1. The blade bodies 3, 3a, 3b and 3c have cutting edges 30 being parallel to the rotational central shaft line of the fitting block 1. A required number of cutting edge deficit parts 31 are provided on the cutting edges 30 along the width direction. The positions of the cutting edge deficit parts 31 are shifted on each blade body and remaining parts caused by the cutting edge deficit parts are cut by cutting edges of other blade bodies.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter for a planing machine and a planing method. More specifically, the present invention relates to a cutter for a planing machine and a method of planing, which enable efficient discharge of chips and reduce cutting power per blade to reduce required power during cutting.

[0002]

2. Description of the Related Art A special cutter is used for a plane machine for finishing a surface of a plate material smoothly. Conventional cutters for planing machines generally have four blades on the outer peripheral surface of a cylindrical block that are parallel to the rotation center axis of the block and have the same length as the block width at equal intervals in the circumferential direction. It is the structure provided in.

[0003]

However, the above-mentioned conventional cutter for a plane machine has the following problems. That is, the blade body is formed relatively wide so that a wide width can be cut in one step in order to improve work efficiency. In addition, since the cutting edge has a continuous straight blade shape over the entire width, the cutting resistance per blade is large. The blade body is attached via a blade base provided on the outer peripheral portion of the block. This blade base has the same width as the block width similarly to the blade body. For this reason, chips cut by the blade rotating at a high speed hit the blade base, thereby causing considerable resistance. Thus, the shape of the blade body and the blade base is a major factor in increasing the power required for cutting. Further, when the cutter for the plane machine rotates, a high-pitched wind noise is generated, and the noise during the operation is increased.

[0004] The object of the present invention is to solve the above-mentioned problems. By reducing the cutting resistance caused by the shapes of the blade body and the blade base, the power required for cutting can be reduced, and the wind noise is reduced. It is an object of the present invention to provide a cutter for a planing machine and a method for planing, which can reduce noise during work by reducing the size of the work.

[0005]

Means of the present invention taken to achieve the above object are as follows. In the first invention, an attachment block having an attachment hole for attachment to a rotating shaft, a plurality of blade bases provided at equal intervals in a circumferential direction on an outer peripheral portion of the attachment block, and the blade base. Respectively, and the blade body has a blade edge parallel to the rotation center axis of the mounting block,
A required number of cutting edges are provided along the width direction in the cutting edge, and the remaining cutting portion due to the cutting edge is cut by the cutting edge of another blade body. It is a cutter.

According to a second aspect of the present invention, there is provided a mounting block having a mounting hole for mounting on a rotating shaft, and a plurality of blade bases provided on an outer peripheral portion of the mounting block at equal intervals in a circumferential direction. A blade body respectively attached to the blade base, wherein the blade base or / and the mounting block are provided with through holes penetrating in the circumferential direction of the mounting block. It is a cutter for.

According to a third aspect of the invention, there is provided a plane machine according to the first aspect, wherein the blade base and / or the mounting block are provided with a through hole penetrating in a circumferential direction of the mounting block. It is a cutter for.

[0008] In the fourth aspect of the present invention, as the plane cutter rotates, chips are removed from the blade base of the plane cutter or /
And a discharge method that discharges through a through-hole provided in the attachment block in the rotation direction.

The number of blade bases, that is, the number of blade bodies is not particularly limited, and is appropriately set, for example, in the range of 2 to 8. The number, size, and shape of the through holes are not particularly limited, and are set as appropriate. In addition, the structure of the attachment block and the blade base for providing the through hole is not particularly limited. For example, a structure formed by molding, processing after molding, a combination of a plurality of parts, or the like is employed.

(Function) The cutter for a planing machine according to the present invention, in which a required number of cutting edges are provided on the cutting edge, is different from a conventional cutter having a straight cutting edge continuous over the entire width. In addition, the cutting resistance per tooth becomes smaller. Thereby, the power required at the time of cutting can be reduced. In addition, the remaining cutting remaining on the cutting surface due to the cutting edge
Since the cutting is immediately performed by the cutting edge of another blade (usually the next blade), the cut surface can be finally finished smoothly.

According to the cutter for a planing machine in which the blade base and / or the mounting block according to the present invention is provided with a through hole penetrating in the circumferential direction of the mounting block, or according to the planing method according to the present invention, cutting is performed by the cutting edge. Most of the cut chips enter the through hole without hitting the blade rest as the cutter rotates. Chips entering the through-hole pass through the through-hole and fall between the next blades.However, due to the high speed of the cutter, the chips repeatedly pass through the through-holes of the rotating blade and eventually Is blown around by the wind generated by the cutter or sucked by the dust collector without giving much resistance to the blade rest. Therefore, the resistance at the time of cutting is smaller than that of the conventional one provided with a blade base against which chips are applied, and the power required at the time of cutting can be reduced. Furthermore, when the cutter rotates, the wind escapes due to the action of the through-hole, so that the wind noise is reduced and the noise at the time of work can be reduced.

[0012]

Embodiments of the present invention will be described in more detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a cutter for a planing machine according to the present invention, FIG. 2 is a cross-sectional view of a portion A in FIG. 1 in a direction perpendicular to the axial direction, and FIG.
It is sectional drawing in the direction orthogonal to the axial direction in a part.

Reference numeral C denotes a cutter for a plane machine, which includes a mounting block 1, a blade base 2, 2a, 2b, 2c and blade bodies 3, 3a, 3c.
b, 3c. (Mounting Block 1) The mounting block 1 is made of metal, has a mounting hole 10 for mounting on a rotating shaft of a plane machine, and is formed in a substantially cylindrical shape. Attachment bases 11, 12, 1 for attaching the blade base 2 to the outer peripheral portion of the attachment block 1.
3, 14 are provided at equal intervals in the circumferential direction (the total number of mounting bases is four). The mounting bases 11, 12, 13, 14 are:
Rotation center axis direction (width direction) of plane cutter C
, Are provided at a total of three places, both ends and an intermediate part. The mounting tables 11, 12, 13, and 14 are mounting blocks 1.
Are provided so as to protrude from the cylindrical surface 16.

Attachment tables 1 provided at three places each
The outer surfaces of 1, 12, 13, 14 are the attachment surfaces 110, 12
0, 130, and 140 (shown in FIG. 3), and each mounting surface is finished in a flat surface. Mounting surface 110, 12
0, 130, and 140 have screw holes 111, 121, 13
1, 141 (shown in FIG. 3) are provided. And
The mounting tables 11, 12, 13, 14 have blade bases 2, 2 a, 2
b and 2c are respectively attached.

(Blade bases 2, 2a, 2b, 2c)
Reference numerals a, 2b and 2c are made of metal and have a substantially rhombic cross section. The blade bases 2, 2 a, 2 b, 2 c are formed to have the same width as the width of the mounting block 1. Blade base 2, 2a, 2b, 2
The mounting surface 20c is provided with the mounting surface 20 which is in contact with and bonded to the mounting surfaces 110, 120, 130, 140. In addition, the rear surface 21 of the blade bases 2, 2 a, 2 b, 2 c corresponds to the screw holes 111, 121, 131, 141 provided in the mounting surfaces 110, 120, 130, 140, and
Screw through holes 22 penetrating to zero are provided at three places.
A head housing hole 23 for housing the head of the screw is provided on the back surface 21 side of the screw through hole 22.

The blade bases 2, 2 a, 2 b, and 2 c are respectively inserted into the screw holes 111, 121, 131, and 141 through the respective screw through holes 22.
And fix the mounting bases 11, 12, 13, 1
4 is fixed. By attaching the blade bases 2, 2a, 2b, 2c to the mounting bases 11, 12, 13, 14, two through holes 15 are formed for the mounting bases 11, 12, 13, 14 respectively. 1, see FIG. 2). A fixing surface 24 is provided on the front side in the rotation direction of the blade bases 2, 2a, 2b, 2c, and the blade bodies 3, 3a, 3b, 3c are fixed to each fixing surface 24.

(Blade 3, 3a, 3b, 3c) Blade 3, 3
a, 3b and 3c are formed of a cemented carbide. Blade body 3,
In the cutting edges 30 of 3a, 3b and 3c, a plurality of cutting edges 31 are provided at required intervals. Cutting edge defect 3
The blades 1 are formed in a substantially semicircular shape, are provided at six positions in the blade bodies 3 and 3b attached to the mounting bases 11 and 13, and are mounted on the mounting bases 12 and 14. In 3a and 3c, it is provided at five places.

That is, the blade bodies 3, 3b and the blade bodies 3a, 3c
In the figure, the position of the cutting edge lacking portion 31 is shifted by 、 width, and the remainder of the cutting by the cutting edge lacking portion 31 is cut by the cutting edge 30 of the blade to be cut next. Note that the position of the cutting edge lacking portion 31 is not particularly limited as long as the remaining cutting portion left by the cutting edge lacking portion 31 can be cut by the cutting edge 30 of the subsequent blade body, and can be set freely. In addition, on the outer surface 25 of the blade rest 2, 2a, 2b, 2c,
A concave groove 26 is provided corresponding to each of the cutting edge defects 31 and connected to the fixing surface 24.

(Operation) FIG. 4 is an explanatory view showing the operation of the cutter for a plane machine. The operation of the plane cutter according to the present invention will be described with reference to FIGS. (1) The plane cutter C is attached to the rotating shaft 5 whose axis is horizontal by fitting the mounting hole 10. The rotating shaft 5 is driven to rotate the plane cutter C in the direction of arrow a, and the wooden material 6 whose cutting depth is set in advance is fed in the direction of arrow b. (2) The surface side of the material 6 is cut off one after another by the cutting edges 30 of the blade bodies 3, 3a, 3b, 3c. Since the cutting edge 30 is provided with the cutting edge lacking portion 31, the number of chips to be removed is 6 to 7 per cutting edge. In addition, the cutting resistance per blade is reduced by the provision of the cutting edge lacking portion 31. Thereby, the power required at the time of cutting can be reduced. Note that the remaining cutting portion remaining on the cutting surface due to the cutting edge lacking portion 31 is immediately cut by the cutting edge 30 of the next blade body, so that the cutting surface can be finally finished smoothly.

(3) Blades 3, 3a,
The chips 3b and 3c move in the rotating direction so as to scoop up the chips, and most of the chips 1 are guided to be embraced by the bases of the blade bases 2, 2a, 2b and 2c, and enter the through holes 15. (4) The chips entering the through-hole 15 pass through the through-hole 15 and fall between the next blades. However, since the rotation of the plane cutter C is high-speed, the chips are rotated by the rotating blade 2. 2
a, 2b, 2c through the through hole 15 many times, and finally the blade bases 2, 2a, 2b, 2c and the mounting bases 11, 12, 1
The wind generated by the plane cutter C is blown around like a chip, and is sucked by a dust collector (not shown), without giving much resistance to 3, 14. Therefore, the resistance at the time of cutting is smaller than that of the conventional one provided with a blade base against which chips are hit, and the power required at the time of cutting can be reduced. Further, when the plane cutter C is rotated, the wind is released by the action of the through-holes 15, so that the wind noise is reduced and the noise at the time of work can be reduced.

The terms and expressions used in the present specification are for explanation only, are not restrictive, and do not exclude terms and expressions equivalent to the above-mentioned terms and expressions. Further, the present invention is not limited to the illustrated embodiment, and various modifications are possible within the scope of the technical idea.

[0022]

The present invention has the above configuration and has the following effects. (A) Planer cutters having a required number of cutting edges at the cutting edge, compared to conventional cutters having a straight cutting edge that is continuous over the entire width as compared with conventional cutters, The resistance of the device becomes smaller. Thereby, the power required at the time of cutting can be reduced. In addition, since the remaining cutting portion remaining on the cutting surface due to the lack of the cutting edge is immediately cut by the cutting edge of another blade body (usually the next blade body), the cut surface can be finally finished smoothly.

(B) With a plane cutter or a method of planeing in which a through hole is provided in the blade base and / or the mounting block in the circumferential direction of the mounting block, most of the chips cut by the cutting edge are removed. As the cutter rotates, it enters the through hole without hitting the blade rest. Chips entering the through-hole pass through the through-hole and fall between the next blades.However, due to the high speed of the cutter, the chips repeatedly pass through the through-holes of the rotating blade and eventually Is blown around by a wind generated by a cutter or is sucked by a dust collector without giving much resistance to the blade rest. Therefore,
The resistance at the time of cutting is smaller than that of a conventional one provided with a blade base against which chips are hit, and the power required at the time of cutting can be reduced. Furthermore, when the cutter rotates, the wind escapes due to the action of the through-hole, so that the wind noise is reduced and the noise at the time of work can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a cutter for a plane machine according to the present invention.

FIG. 2 is a sectional view taken along a direction perpendicular to an axial direction in a portion A of FIG. 1;

FIG. 3 is a cross-sectional view taken along a direction perpendicular to the axial direction in a portion B of FIG. 1;

FIG. 4 is an explanatory view showing the operation of a cutter for a plane machine.

[Explanation of symbols]

 C Cutter for plane machine 1 Mounting block 10 Mounting hole 11, 12, 13, 14 Mounting base 110, 120, 130, 140 Mounting surface 111, 121, 131, 141 Screw hole 15 Through hole 16 Cylindrical surface 2, 2a, 2b, 2c Blade base 20 Attachment surface 21 Back surface 22 Screw through hole 23 Head accommodating hole 24 Fixing surface 25 Outer surface 26 Concave groove 3, 3, a, 3b, 3c material

Claims (4)

[Claims] 1. A mounting block (1) having a mounting hole (10) for mounting on a rotating shaft, and a plurality of blade rests provided on an outer peripheral portion of the mounting block (1) at equal intervals in a circumferential direction. (2) (2a) (2b) (2c), and blades (3) (3a) (3b) (3c) attached to the blade base (2) (2a) (2b) (2c), respectively. The blade body (3) (3a) (3b) (3c) has a cutting edge (30) parallel to the rotation center axis of the mounting block (1), and the cutting edge (3
(0) is provided with a required number of cutting edges (31) along the width direction, and the remaining cutting by the cutting edge (31) is cut with the cutting edge (30) of another blade. A cutter for a plane machine. 2. A mounting block (1) having a mounting hole (10) for mounting on a rotating shaft, and a plurality of blade rests provided at equal intervals in a circumferential direction on an outer peripheral portion of the mounting block (1). (2) (2a) (2b) (2c), and blades (3) (3a) (3b) (3c) attached to the blade base (2) (2a) (2b) (2c), respectively. The blade base (2) (2a) (2b) (2c) or / and the mounting block (1)
A cutter for a plane machine, characterized in that a through hole (15) penetrating in a circumferential direction of the mounting block (1) is provided in the cutter. 3. A through hole (15) penetrating in the circumferential direction of the mounting block (1) is provided in the blade base (2) (2a) (2b) (2c) and / or the mounting block (1). The cutter for a plane machine according to claim 1, characterized in that: 4. With the rotation of the plane cutter, the chips are penetrated in the rotational direction through the blade bases (2), (2a), (2b), (2c) and / or the mounting block (1) of the plane cutter. A method for sculpting, characterized in that the gas is discharged through a through hole (15) provided as a hole.