JP2002347018A - Working tool and support base for supporting working tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable working of cutting out an object to be worked halfway in its thickness or forming a groove on the object to be rapidly executed. SOLUTION: A working tool comprises a vibration generator 10 constituted to vibrate a surface 1a to be worked of the object 1 to be worked by a vibrating unit 11 in a cutting direction substantially parallel to the surface 1a, and a cutting blade 20 fixed to the unit 11. Thus, the object 1 is cut by the blade 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working tool suitable for cutting or grooving an object to be worked, such as a heat insulating plate, and a support for supporting the working tool.

[0002]

2. Description of the Related Art Conventionally, when a groove is formed on an object to be processed such as a heat insulating plate provided on an outer peripheral surface of a duct, a general cutter which is used by being gripped by hand has been used. For example,
When forming a V-shaped groove in the object to be processed, the cutter gripped at an angle is cut into a halfway depth of the object to be processed, and along the surface of the object to be processed while maintaining the cutting depth. Further, the cutter is tilted in a direction opposite to the tilt direction, and is maintained in parallel with the cut line formed by the processing, and is moved in the same manner as described above to be formed by two cut lines. A V-groove was formed by removing a portion having a V-shaped cross section.

However, in the conventional processing means using the above-mentioned cutter, it is necessary to reciprocate the cutter a plurality of times according to the desired cross-sectional shape of the groove, so that the work is troublesome and the processing time is long. In addition, there is also a problem that the cutting depth varies, or the cutting depth is too large to penetrate the workpiece. Therefore, it is conceivable to perform accurate and speedy machining using an electric machining tool. Since the structure is such that the object to be processed is cut by being moved up and down, it is not possible to perform the processing for cutting the object to a halfway depth as in the above-described groove processing.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and its object is to cut a part of the object to be processed in the middle of its thickness or to form a groove in the object to be processed. It is an object of the present invention to provide a working tool capable of speedily performing a working for forming a workpiece and a support base for supporting the working tool.

[0005]

As a technical means of the present invention for solving the above-mentioned problems, a first aspect of the present invention is configured such that a vibrating portion vibrates in a cutting direction substantially parallel to a processing surface of a workpiece. A vibration generating device, and a cutting blade integrally fixed to the vibrating portion, wherein the object to be processed is cut by the vibrating cutting blade.

Here, the vibration in the cutting direction means that the vibrating part is operated so that the blade end of the cutting blade integrated with the vibrating part collides with the workpiece. The vibration includes a linear motion that moves forward and backward substantially in parallel with the surface to be processed of the processing object, and a vibration in which the vibrating portion performs a circular motion or an elliptical motion substantially in parallel with the processing surface of the processing object. The mechanism for vibrating the vibrating section is not particularly limited, and is preferably a mechanism configured to vibrate the vibrating section in the cutting direction by an electric drive source.
The vibration unit may be a well-known mechanism of an electric polishing machine or the like that vibrates by a circular motion substantially in parallel with the surface to be processed of the processing object. The object to be processed is JIS A 9504.
It is preferable to use artificial mineral fibers specified in (1) or a heat insulating plate similar thereto.

According to the above technical means, the object to be processed is
Cutting is performed by colliding with the blade end of the cutting blade that vibrates integrally with the vibrating part.

According to a second aspect of the present invention, the cutting blade is fixed so that the angle with the surface to be processed of the object to be processed is an acute angle, and the blade end is formed in an uneven blade shape. Features. According to this technical means, since the cutting blade cuts the object to be processed while maintaining an acute angle with the surface to be processed of the object to be processed, it is possible to more reliably cut the object to be processed. Further, since the cutting blade operates so that the convex portion of the blade end bites into the workpiece, the cutting of the workpiece can be further reliably performed.

According to a third aspect of the present invention, the cutting blade is formed in a shape following the shape of a groove to be processed. Here, particularly preferably, the cutting blade is formed in a V-shape.

According to a fourth aspect of the present invention, there is provided a working table for supporting the working tool, comprising: a base on which a workpiece can be placed; and two guide bars parallel to each other above the base. The two guide rods are slidably engaged in an orthogonal direction, and the two guide rods are arranged so that the cutting blade is inserted downward between them and the processing tool is placed thereon. It is characterized by. The height of the two guide rods is set according to the depth of cut into the workpiece by the cutting blade of the processing tool.

According to a fifth aspect of the present invention, there is provided a machining tool, wherein a guide supporting portion is provided on a lower surface side of the vibrating portion so that the vibrating portion is supported and guided by a surface to be processed of a workpiece. And The height of the guide support is set according to the depth of cut into the workpiece by the cutting blade.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an example of a machining tool for a workpiece according to the present invention.

The machining tool A includes a vibration generator 10 configured to vibrate the vibrator 11 by an electric drive source.
And a cutting blade 20 fixed to the vibrating section 11 via a support bracket 12.

The vibration generator 10 comprises a main body 13 having an electric driving source (not shown) therein and a vibrating section 11 which vibrates by driving the electric driving source. It is used.

The vibration generating device 10 is configured to vibrate in a cutting direction substantially parallel to the processing surface 1a of the workpiece 1.
For example, a configuration in which the vibrating portion 11 vibrates by a front-back (left and right in FIG. 1) linear motion,
Any known configuration may be used as long as the configuration vibrates by a circular motion or an elliptical motion substantially parallel to.

In the vibration generator 10 according to one embodiment of the present invention, an electric polishing machine used for polishing the surface of a building material or the like is used.

The vibration generator 10 has a rotating shaft (not shown) that is rotated by an electric drive source inside a main body 13. A cam mechanism 14 is provided at the tip of the rotating shaft.
The vibration unit 11 is attached via the
Vibrates due to horizontal circular motion by the cam mechanism 14. This circular motion is a motion in which the vibrating part 11 moves horizontally along a circle having a diameter of about 3 mm while maintaining its orientation.

The support bracket 12 is a rectangular metal plate having a bent portion 12a at the peripheral end for reinforcement. The support bracket 12 is provided on the lower surface of the vibrating portion 11 so as to vibrate integrally with the vibrating portion 11. It is fixed by fixing means such as welding or screwing.

The cutting blade 20 has a blade end portion 21 formed in an uneven blade shape, and the entire shape thereof is
1 and 2, it is formed in a V-shape, and both ends thereof are welded to a support bracket 12 integral with the vibrating portion 11. Is fixed so that the angle α with the workpiece 1 to be processed becomes an acute angle.

The blade end 21 is formed in a concave and convex blade shape in a side view so as to improve the cutting property of the workpiece 1, and a specific example of the shape is as shown in FIG. A shape in which a plurality of mountain-shaped convex portions 21a are continuous, a shape in which semicircular concave portions 21b are continuous as shown in FIG. 3B, and a continuous semicircular convex portion 21c as shown in FIG. Shape, same figure (d)
It is preferable that semi-circular convex portions 21d and semi-circular concave portions 21e are provided alternately as shown in FIG.

The working tool A having the above configuration is used by being supported on a support B shown in FIG. This support B
Is a method in which two guide bars 31, 31 parallel to each other on a base 30 on which the workpiece 1 can be placed,
1, 31 are slidably engaged in the orthogonal direction.

The base 30 is a metal plate of a rectangular shape in plan view having a flat surface, and is supported on the floor by square legs 32 on the back side. In addition, this base 30
The guide rod 31 which will be described later
Is fixed.

The guide rod 31 is a metal rod bent in a U-shape extending over the base 30, and two of the guide rods 31 are provided so that their horizontal elongated portions are parallel above the base 30. The processing tool A is provided so that the cutting blade 20 is placed in a state where the cutting blade 20 is inserted downward.

The height h1 of these two guide rods 31, 31 from the surface of the base 30 is set according to the depth of cut into the workpiece 1 by the cutting blade 20 of the processing tool A. I have. That is, in order to make the cutting depth shallow, the dimension h1 is set large, so that the cutting blade 20 of the processing tool A to be placed is arranged away from the upper surface of the base 30. In order to increase the cutting depth, the dimension h1 is set to be small, so that the cutting blade 20 of the processing tool A to be placed is arranged close to the upper surface of the base 30.

The end of each guide rod 31 is fixed to a concave slide 34 slidably fitted to the convex rail 33.

A screw (not shown) integrally having a lever portion 35 is screwed through the lower portion of the concave slide piece 34. The screw is loosened by the lever portion 35 so that the screw is slid. The concave slide piece 34 is configured to be fixed to the convex rail portion 33 at a desired position.

The convex rail portion 33 and the concave slide piece 3
4, a bearing mechanism for making the sliding operation of the concave slide piece 34 smoother is provided as necessary.

Next, the working tool A and the support B having the above-described configuration
A procedure for processing the processing target object 1 using will be described. First, the workpiece 1 is laid on the upper surface of the base 30 of the support B. Then, the processing tool A is placed on the two guide rods 31, 31 with the cutting blade 20 inserted between the guide rods 31, 31 (see FIG. 5).

At this time, when the workpiece 1 is machined in a direction parallel to the guide rod 31 (the left-right direction in FIG. 5), the work tool A is placed with the machining tool A directed in a direction parallel to the guide rod 31. Is placed. And the processing tool A is a cutting blade 2
The zero blade end 21 is brought into contact with the end of the workpiece 1, is slid on the two guide rods 31, and is moved in a direction parallel to the guide rods 31.

When the object 1 is machined in a direction perpendicular to the guide rod 31 (vertical direction in FIG. 5),
The processing tool A is placed in a state where the processing tool A is directed in a direction orthogonal to the guide rod 31. Then, the mounted processing tool A is moved in a direction orthogonal to the guide rod 31 by bringing the blade end 21 of the cutting blade 20 into contact with the end of the processing object 1. that time,
The two guide rods 31, 31 move in a direction orthogonal to the guide rods 31 together with the processing tool A as the concave slide piece 34 slides along the convex rail portion 33.

The processing object 1 is an artificial mineral fiber specified in JIS A 9504, a heat insulating plate similar thereto, or the like, and is made of fine fibers such as minerals and glass. And
In the example of the present embodiment, the object 1 is
A V-groove is formed so as to be used as a heat insulating plate for covering the outer periphery of the duct and to be bent at the corner of the duct.

With the use of the processing tool A and the support B, the object 1 is made to collide with the blade end 21 of the vibrating cutting blade 20, thereby forming the object 1. A large number of fine fibers are cut so as to be folded. More specifically, since the cutting blade 20 vibrates due to a circular motion parallel to the processing surface 1a, the cutting blade 20 moves toward the blade end 21 (rightward in FIG. 1) in the course of the circular motion.
When moving in a semi-circular shape, the blade end 21
Collides with a large number of fine fibers, and the fibers are cut in such a manner as to be folded.

Therefore, a V-shaped groove is formed in the processing surface 1a of the processing object 1 along the direction in which the processing tool A is moved, following the shape of the lower end of the cutting blade 20 (FIG. 6).
reference).

A dust collector (not shown) is provided around the support base B so that dust generated by the above-mentioned processing is quickly sucked.

Next, the working tool C of the embodiment shown in FIG. 7 will be described. Since the processing tool C has a configuration in which the guide support portion 40 is added to the processing tool A described above,
For the parts other than the guide support part 40, the same parts are given the same reference numerals, and overlapping detailed description will be omitted.

The guide support section 40 is formed by bending a band-shaped metal piece into a substantially U-shape, and the longitudinal direction thereof is made parallel to the traveling direction of the cutting blade 20 so that the support bracket 12 can be bent.
Are welded to both sides of the cutting blade 20 on the lower surface of the blade. And this guide support part 40 supports the support bracket 1.
2 and the vibrating portion 11 integrated with the support bracket 12 are supported and guided on the surface 1a of the workpiece 1 to be processed.

The height h2 of the guide support 40 is set according to the depth of cut into the workpiece 1 by the cutting blade 20. That is, the dimension h2 is set large to reduce the depth of cut, and the dimension h1 is set small to increase the depth of cut.

According to the machining tool C, when machining the workpiece 1, the support bracket 12 integrated with the vibrating portion 11 is formed.
Is processed surface 1 of processing object 1 by guide support 40
Since it is supported and guided by a, the workpiece 1 can be processed quickly on site without using the above-described support B.

In the processing tools A and C,
Although a particularly preferred embodiment in which the cutting blade 20 is formed in a V-shape is illustrated, the shape of the cutting blade 20 may be a shape following the groove shape to be processed, and is not limited to the V-shape. Absent. For example, when a rectangular concave groove is to be formed in the workpiece 1 as shown in FIG. 9A, the shape of the cutting blade 20 is also formed in a rectangular concave shape, as shown in FIG. 9B. When the end of the processing target 1 is to be processed into an L-shaped notch, the lower end of the cutting blade 20 is formed in an L-shape. Further, as shown in FIG.
In order to form a semicircular concave groove in the cutting blade 2,
0 is formed in a semicircular concave shape. In addition, as shown in FIG. 3D, when a vertical cut is to be formed in the workpiece 1, the lower end of the cutting blade 20 is formed in a vertical piece. In the illustrated example, the cutting blade 20 cuts the workpiece 1 to an intermediate depth, but the workpiece 1 may be vertically penetrated and divided.

In the above embodiment, since the vibrating portion 11 is configured to vibrate in a circular motion along a circle having a diameter of about 3 mm, the vibrating portion 11 is within 3 mm in a direction orthogonal to the traveling direction of the cutting blade 20. Although a processing error may occur, when the processing object 1 is used as a heat insulating material for a duct as in an example of the present embodiment, and one side thereof is several tens of centimeters to several meters, the processing error is a problem. Does not.

Therefore, machining tool A and machining tool C
Is not limited to a configuration in which the diameter of the circular motion of the vibrating portion 11 is limited to about 3 mm, and is configured such that the diameter of the circular motion is set according to a desired processing error in the workpiece 1. . When the workpiece 1 is a heat insulating material for a duct, the diameter of the circular motion is preferably within 5 mm.

In order to further reduce the machining error in the machining tool A and the machining tool C, the vibrating portion 1
It is preferable to adopt a configuration in which 1 is vibrated by front and rear (left and right in FIG. 1) linear motion.

In the support B, the guide rod 31
Is mounted on the guide rod 3 so that its height dimension h1 can be adjusted.
The first vertical portion may be configured to slide and extend. According to this configuration, it is possible to arbitrarily adjust the cutting depth of the processing tool A into the workpiece 1 by sliding and extending the vertical portion of the guide rod 31.

Similarly, in the processing tool C,
The guide support portion 40 may be configured to slide and expand / contract a vertical portion of the guide support portion 40 so that the height dimension h2 can be adjusted. According to this configuration,
By making the vertical portion of the guide support portion 40 slide and expand and contract, the cutting depth of the processing tool A into the workpiece 1 can be arbitrarily adjusted.

[0045]

Since the present invention is configured as described above, it has the following effects. According to the first aspect, the object to be processed is cut by colliding with the cutting blade integrated with the vibrating portion that vibrates in a direction parallel to the surface to be processed. Therefore, unlike a conventional cutting tool such as an electric jigsaw, it does not have a structure in which a saw blade penetrates a workpiece and cuts the workpiece. The process of forming a groove in the substrate can be performed speedily. Furthermore, according to the second invention, the cutting blade is fixed so that the angle with the surface to be processed of the processing object is an acute angle, and the blade end is formed in an uneven blade shape. The object can be more reliably cut, and more speedy processing can be performed. Furthermore, according to the third invention, since the cutting blade is formed in accordance with the groove shape to be machined, it is necessary to make a plurality of cuts in the object to be machined as in the case of machining a groove using a cutter. A groove having no variation in the cross-sectional shape can be quickly processed by a single operation parallel to the object to be processed. Further, according to the fourth aspect of the present invention, the workpiece placed on the support base can be processed accurately and speedily by the processing tool, and the two guide rods slide. The traveling direction of the machining tool can be easily changed to either a direction along the two guide rods or a direction in which the two guide rods slide. In addition, since the depth of cut into the object to be processed is fixed by the two guide rods, accurate processing without variation in the depth of cut can be performed. Further, according to the fifth aspect, when processing the object to be processed, the vibrating portion is supported and guided on the surface to be processed of the object to be processed by the guide support portion, so that a support table is not required. In addition, the object to be processed can be processed quickly on site. In addition, since the depth of cut into the object to be processed is fixed by the guide support portion, accurate processing without variation in the depth of cut can be performed.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a working tool according to the present invention.

FIG. 2 is a perspective view of the working tool viewed from a lower surface side.

FIG. 3 shows a cutting edge shape of a cutting blade in the processing tool.
It is a side view which illustrated to each of (a)-(d).

FIG. 4 is a perspective view showing an example of a support base according to the present invention.

FIG. 5 is a plan view showing a main part of the support base.

FIG. 6 is a cross-sectional view showing a processing target processed by an example of a processing tool according to the present invention.

FIG. 7 is a perspective view showing another example of the working tool according to the present invention from below.

8 is a diagram showing a state in which the processing target is being processed by the processing tool shown in FIG. 7, as viewed from the traveling direction side of the processing tool, and shows the processing target in a cross section.

FIGS. 9A to 9D are cross-sectional views illustrating examples of processing of a processing target object.

[Explanation of symbols]

 1: Workpiece 1a: Work surface 10: Vibration generator 11: Vibration unit 20: Cutting blade 21: Blade end 30: Base 31: Guide rod A, C: Processing tool B: Supporting table

Claims (5)

[Claims] A vibration generator configured to vibrate a vibrating portion in a cutting direction substantially parallel to a surface to be processed of a workpiece;
A processing tool, comprising: a cutting blade integrally fixed to the vibrating portion, wherein the processing target is cut by the vibrating cutting blade. 2. The cutting blade according to claim 1, wherein the cutting edge is fixed so that the angle with the surface to be processed of the object to be processed is an acute angle, and the edge of the blade is formed in an uneven blade shape. 1
The processing tool described. 3. The processing tool according to claim 1, wherein the cutting blade is formed in a shape following a groove to be processed. 4. A guide on which a workpiece can be placed is engaged with two guide rods parallel above the base so as to be slidable in a direction perpendicular to the guide rods. 4. The guide rod according to claim 1, wherein the cutting blade is inserted between the guide rods in a downward direction, and the processing tool is placed on the guide rod. 5. A support base that supports various machining tools. 5. A guide supporting portion provided on a lower surface side of said vibrating portion so that said vibrating portion is supported and guided by a surface to be processed of a processing object. Or the processing tool according to claim 1.