JPH0785882B2 - Cutter and machine tool equipped with the cutter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter for scoring or grooving the surface of a flat board material such as cardboard or wood to construct a structure such as a box.

[0002]

2. Description of the Related Art Conventionally, in the case of manufacturing a structure such as a box by bending a work which is a flat plate material such as a cardboard material or a thin wood,
There is a method of making a fold with a press and utilizing the fold to achieve folding. In addition to such a bending method using a press, a method is known in which, for example, a V groove having an angle of 90 ° is formed on the work, and a right angle bending is achieved by using the V groove. There is. Above V
In forming the groove, as shown in FIG. 6, a cutter such as a chisel or chisel having a V-shaped tip blade surface is set to a predetermined height with respect to a work placement surface (such as a conveyor surface (not shown)). It is fixed and pressed against the cutter from the end face side of the work to scrape it off.

[0003]

By the way, there is a phenomenon that the cutter is merely fixed and the work is easily lifted at the portion where the V groove is formed. Therefore, unless the work is pressed on the conveyor surface or the like with a considerable pressure in the vicinity of the cutter, the relative position between the cutter and the work is not stable, and the V groove having a desired depth cannot be formed. there were. For the above reasons, it has been impossible to form the V groove on a soft material such as corrugated board among cardboard materials by the conventional cutter. Further, it has been difficult for the cutter to maintain the sharpness of the tip blade surface for a long time, and it is also difficult to polish the blade surface for regeneration. Further, the chips when forming the V-groove with this cutter are connected to the upper part of the blade in a loop shape and are discharged for a long time, so that the chips are easily entangled in the surrounding mechanical part,
There was an annoying problem that it had to be removed regularly.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a cutter for making a cut or a groove on the surface of a flat plate material such as cardboard or wood. Another object of the present invention is to provide a machine tool equipped with the cutter, in which the sharpness of the tip blade surface can be maintained for a long time, it is easy to grind, and the processing of chips is easy.

[0005]

A first feature of the configuration of the invention for solving the above problems is a cutter for chamfering an outer peripheral end face of a flat plate material such as a cardboard material or wood, which is a cutter for a motor. A disk-shaped base that rotates with the drive,
A plurality of cutting edge members joined to the outer peripheral end surface portion of the base along the circumferential direction of rotation at a predetermined interval, and the cutting edge member constitutes a part of a side surface of a cone having the base as a substantially bottom surface. Surface and the rotation circle on the outermost peripheral side of the constituent surface when joined to the base
The first blade surface of a predetermined width that extends in the circumferential direction and its rotation direction
It is provided on the tip side continuously with the first blade surface and has a long turning radius.
The first blade surface is delayed so that
And a second blade surface formed to have a predetermined angle .

The second feature is a cutter for making a linear groove on the surface of a flat plate material such as a cardboard material or wood, which is a disk-shaped base that is rotated by the drive of a motor. When,
A plurality of cutting edge members joined to the outer peripheral end surface portion of the base along the circumferential direction of rotation at a predetermined interval, and the cutting edge member constitutes a part of a side surface of a cone having the base as a substantially bottom surface. Surface and the rotation circle on the outermost peripheral side of the constituent surface when joined to the base
The first blade surface of a predetermined width that extends in the circumferential direction and its rotation direction
It is provided on the tip side continuously with the first blade surface and has a long turning radius.
The first blade surface is delayed so that
And a pair of cutter members each having a second blade surface formed to have a predetermined angle, and the pair of cutter members substantially match the rotation trajectories of the first blade surfaces with the rotation trajectory surface. The cutting edge members are arranged symmetrically with respect to each other and are combined so that the cutting edge members are alternately located in the rotational direction.

The third feature is claim 1 or claim 2.
A machine tool equipped with the cutter according to claim 1, characterized in that it has a working table on which the flat plate material is placed, and a rotary shaft which is parallel to the working table and pivotally supports the cutter.

[0008]

[Operation of First Feature] By rotating a plurality of blade edge members joined to the base at a predetermined interval, the first blade surface and the second blade provided on the blade edge members. Using the surface, a cut for chamfering is performed on the outer peripheral end surface of a flat plate material such as cardboard or wood. In this way, the cutter is made up of a plurality of blade edge members, and the second blade surface and the first blade surface of the cutter are independently cut one after another into a flat plate material such as cardboard or wood to which the first blade surface is fed. Will be done. Especially, the second blade surface is
It is provided on the end side continuously with the first blade surface and has a long turning radius.
To the first blade surface
Since it is formed to have a predetermined angle, it is always shallow.
Machining by cutting from a deep part to a deep part
And the deepest part is the first blade surface along the direction of rotation.
Is cut by. As a result, the finish of the cut surface is beautiful.
It

"Operation of the second characteristic" The pair of cutter members having the operation of the first characteristic are arranged symmetrically with respect to the surface of the rotational locus so that the rotational trajectories of the first blade surface substantially coincide with each other. The cutting edge members are assembled so as to be alternately located in the rotational direction. As described above, the cutter is a combination of a pair of cutter members each including a plurality of cutting edge members. A linear groove is formed by making independent cuts from the left and right one after another in a flat plate material such as a cardboard material or wood to which the first blade surface and the second blade surface are fed as the cutter members rotate. It will be cut. Especially, the second blade surface is
It is provided on the tip side continuously with the first blade surface and has a long turning radius.
The first blade surface is delayed so that
Since it is formed to have a predetermined angle,
Make a cut from the shallow part to the deep part.
Work is done, the deepest part is the first blade along the direction of rotation
Cut in the plane. As a result, the finish of the cut surface of the V-shaped groove is
Become beautiful.

"Operation of Third Characteristic" A machine tool provided with a cutter having the configuration of the first or second characteristic has an operation similar to that of the first or second characteristic of the pivotally supported cutter. Have. Therefore, by placing the flat plate member on the processing table and rotating the cutter while pivotally supporting the cutter on the rotary shaft, predetermined chamfering and grooving are achieved for the flat plate member.

[0011]

EXAMPLES The present invention will be described below based on specific examples. FIG. 1 is an overall configuration diagram showing a grooving device for a flat plate material such as a cardboard material and wood which is a machine tool using a cutter according to the present invention. The grooving apparatus 100 is mainly composed of a bed 60 having a conveyor 61, an L-shaped support 70 fixedly mounted on the bed 60, a drive base 80 positioned on the support 70, and a rotatably rotatably supported by the drive base 80. And a cutter 50 that has been cut. The conveyor 61 on the bed 60 is driven from the front side to the back side in the figure. A work guide 62 that guides the end surface of the work W, which is a flat plate material such as cardboard or wood, is disposed on the right side of the bed 60 in the vicinity of the conveyor 61 with respect to the feeding direction. The conveyor 61 is provided with a plurality of holes, and a blower device (not shown) sucks the work W through the holes to prevent the work W from floating and being displaced. A work placing table 63 is fixedly installed on the work loading side (front side) of the bed 60.
A ball screw 72 is provided on a lateral beam portion 71 of a column 70 which is an L-shaped cantilever. When the handle 73 is rotated, the ball screw 72 is rotated and the drive base 8
0 is moved in the left-right direction, and the position of V groove cutting described later is set. A drive motor 81 is fixedly mounted on the drive base 80, and the drive motor 81 is provided with a bearing 83 via a drive belt 82.
The rotating shaft 85 pivotally supported by the shaft is rotated. The cutter 50 is integrally fixed to the rotary shaft 85. The blade surface position of the cutter 50 with respect to the work W is determined by the mechanism (not shown) similar to that in the horizontal direction described above so that the drive base 80 is attached to the lateral beam portion 7 of the support 70.
It is moved in the vertical direction with respect to 1 and set in advance. The periphery of the cutter 50 is covered with a cover 90. The cover 90 is slidable with a shaft fixed to the drive base 80, and is biased toward the conveyor 61 by a spring. This cover 90 secures the safety of the work and is provided with presser rollers 91 and 92 which are rotatable in the front and rear of the advancing direction of the work W so that the work W does not float up when grooving. The rollers 91 and 92 are the work W or the conveyor 6.
By making contact with the first surface, an appropriate gap is secured between the cover 90 and the work W or the surface of the conveyor 61. That is, depending on the end surface of the cover 90, the work W and the conveyor 6
1 Does not scratch the surface. Further, a dust collecting opening 95 is provided on the upper portion of the cover 90, and the dust collecting opening 95 is connected to a known dust collecting device via a hose (not shown).

FIG. 2 is a perspective view showing a cutter 50 according to the present invention, and FIG. 3 is a front view. 4 is a longitudinal sectional view taken along the line AA of FIG. 3, and FIG. 5 is one side (front side) in FIG.
FIG. 6 is a rear view of only the cutter member of FIG. still,
The arrows in FIGS. 2 and 3 indicate the direction in which the cutter 50 is rotated. The cutter 50 corresponds to the second invention of the present invention. If only one of the cutter members 10 or 20 constituting the cutter 50 is used, it corresponds to the first invention in the case of chamfering the outer peripheral end face of a flat plate material such as a cardboard material or wood. The cutter 50 is configured by combining a pair of cutter members 10 and 20. Both of the cutter members 10 and 20 are, for example, bases 11 and 21 made of carbon steel (S35C) and a cutting edge member 12 made of cemented carbide.
22 is joined by silver wax. The blade tip member 12 has a part of a side surface of a cone having an apex angle of 90 ° with the joined base 11 as a substantially bottom surface, and has a first blade surface 12 having a predetermined width on the outermost peripheral side.
a and a second blade surface 12b provided on the tip side in the rotational direction thereof with an angle of approximately 45 ° with respect to the first blade surface 12a. Similarly, the cutting edge member 22 includes a first blade surface 22a and a second blade surface 22b. The second blade surface 12
The angles of b and 22b with respect to the first blade surfaces 12a and 22a are appropriately changed depending on the material of the work W and the like. Cutter 50
In a state in which is fixed to the rotating shaft 85, a spacer 31 having a predetermined thickness is arranged between the base 11 of the cutter member 10 and the base 21 of the cutter member 20. By this spacer 31, the first blade surface 12 a of the blade member 12 of the cutter member 10 and the first blade surface 2 of the blade member 22 of the cutter member 20.
The rotation locus with 2a can be made to substantially match. Therefore, in the grooving by the cutter 50, the V grooving work of 90 ° (right angle) can be performed.

Next, the cutter 5 is cut by the above-described groove cutting device 100.
The V-groove cutting operation when 0 is used will be described with reference to FIG. The V groove cutting position of the work W is determined with respect to the work guide 62 by adjusting the position of the drive base 80 with the handle 73 and adjusting. After the V groove cutting position is determined, the conveyor 61 and the drive motor 81 are activated. Then, the work W is transferred from the work mounting table 63 to the conveyor 61.
The work guide 62 is applied one-sided and fed. Then, the work W is sucked by the conveyor 61 and guided from the work guide 62 and is sent from the front side to the back side. When grooving a work W made of a flat plate material such as cardboard or wood, the cutter 50 is usually rotated in the direction of the arrow in FIG. 1, that is, the work W is an upper cut.
The work W is sucked onto the conveyor 61 as described above and is pressed against the conveyor 61 by the pressing rollers 91 and 92. Therefore, the height relationship between the work W and the tip of the cutting edge of the cutter 50 is as set in advance, and the work W is V-grooved on the surface leaving a wall thickness of about 0.1 to 0.2 mm. At this time, the chips of the work W by the cutter 50 are finely cut without being discharged in a long state by being connected in a loop as in the conventional case. This is because the cutting edge members 12 and 22 of the cutter 50 have a part of the side surface of the cone as a constituent surface and are alternately positioned at a predetermined interval.
This is because arcuate cuts are made from the left and right with respect to the planned V groove cutting line. Then, the chips of the work W that are finely cut are removed by the cover 90 from the dust collecting opening 95 without being scattered by the cover 90. Since the cutter members 10 and 20 constituting the cutter 50 are composed of a plurality of blade edge members 12 and 22 having a predetermined interval, sharpness can be maintained for a long time. Further, the cutter 50 can separate the cutter members 10 and 20 even if the V-groove is cut, so that the polishing directions are on one side and polishing is easy.

Cutter member 1 constituting the above-mentioned cutter 50
The cutting edge members 12 and 22 of 0 and 20 achieve V groove cutting of 90 ° by forming a part of the side surface of a cone having an apex angle of 90 ° with the joined base 11 as a substantially bottom surface. Here, for example, if the apex angle is 120 °, the cutter can be V-grooved at 60 °. By using the cutter 50 of the present invention, it is possible to form the V-groove even if it is made of a cardboard material or a soft material such as corrugated cardboard. Further, by changing the shape of the blade surface of the blade members 12 and 22, it is possible to configure a cutter capable of cutting U-grooves or trapezoidal grooves.

[0015]

EFFECT OF THE INVENTION "First Effect" The present invention is configured as described above, and the sharpness can be maintained for a long time by a plurality of blade edge members and chips are finely cut and discharged, for example, by suction. It can be easily removed. Also, always from the shallow part to the deep
Machining by pressing down on the open part to make a notch
And the deepest part is the first blade surface along the direction of rotation.
Since it is cut with, the finish of the chamfered surface becomes beautiful.

[Second Effect] The present invention is configured as described above, and in addition to the first effect, since a pair of cutter members are combined, the polishing direction is one side when separated. There is an effect that the blade surface can be easily polished regardless of the cutter for cutting the groove. Also, always from shallow to deep
Processing is performed as if pressing and cutting.
The deepest part is cut by the first blade surface along the direction of rotation
The V-groove surface finishes beautifully.

[Third Effect] The machine tool provided with the cutter of the present invention has the same effect as the first or second effect of the cutter supported by the shaft. Therefore, the sharpness of the cutter can be maintained for a long time, and the chips are finely cut and discharged. Further, even if the cutter is for grooving, it can be separated, so that the blade surface can be easily polished.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing a grooving device for a flat plate material such as a cardboard material and wood which is a machine tool using a cutter according to a specific embodiment of the present invention.

FIG. 2 is a perspective view showing a cutter according to the embodiment.

FIG. 3 is a front view showing a cutter according to the embodiment.

FIG. 4 is a vertical cross-sectional view taken along the line AA of FIG.

FIG. 5 is a rear view of only one (front side) cutter member in FIG. 3 as viewed from the back side.

FIG. 6 is an explanatory view showing V-grooving of a work in a conventional cutter.

[Explanation of symbols]

 10, 20-Cutter member 11,21-Base 12,22-Blade edge member 12a, 22a-First blade surface 12b, 22b-Second blade surface 50-Cutter 60-Bed (processing table) 70-Support 80 -Drive base 81-Drive motor 85-Rotating shaft 90-Cover 100-Grooving device (machine tool) W-Workpiece

Claims (3)

[Claims] 1. A cutter for chamfering an outer peripheral end surface of a flat plate material such as a cardboard material or wood, comprising a disk-shaped base that is rotated by driving a motor, and an outer peripheral end surface portion of the base. Along the circumferential direction of rotation , having a plurality of cutting edge members joined at a predetermined interval, the cutting edge member is a part of the side surface of the cone of which the base is substantially bottom, the base, A first blade surface of a predetermined width extending in the rotational circumferential direction on the outermost peripheral side of the constituent surface when joined to the base and a first blade surface continuous on the tip side in the rotational direction thereof.
It is provided, and the longer the radius of gyration, the later the direction of rotation.
To form a predetermined angle with the first blade surface
And a second blade surface that is cut. 2. A cutter for linearly grooving a surface of a flat plate material such as a cardboard material or wood, the disk-shaped base being rotated by the drive of a motor, and the base. Along the circumferential direction of rotation on the outer peripheral end face portion, having a plurality of cutting edge members joined at a predetermined interval, the cutting edge member having a part of a side surface of a cone having the base as a bottom surface as a constituent surface. , A first blade surface having a predetermined width extending in the rotational circumferential direction on the outermost peripheral side of the constituent surface when joined to the base, and a first blade surface continuously on the tip side in the rotational direction thereof.
It is provided, and the longer the radius of gyration, the later the direction of rotation.
To form a predetermined angle with the first blade surface
A pair of cutter members each having a curved second blade surface, and the pair of cutter members are arranged symmetrically with respect to the rotation locus surface so that the rotation loci of the first blade surface substantially coincide with each other. A cutter characterized in that the cutting edge members are combined so as to be alternately positioned in the rotational direction. 3. A machine tool comprising the cutter according to claim 1 or 2, comprising a processing table on which the flat plate material is mounted, and a rotary shaft which is parallel to the processing table and pivotally supports the cutter. A machine tool characterized by having.