KR20140008799A

KR20140008799A - Trimming apparatus

Info

Publication number: KR20140008799A
Application number: KR1020120075955A
Authority: KR
Inventors: 박태근
Original assignee: 박태근
Priority date: 2012-07-12
Filing date: 2012-07-12
Publication date: 2014-01-22

Abstract

The present invention relates to a device for chamfering the corners of a curved portion having the same curvature, such as a circular or circular ring shaped object. More specifically, in order to chamfer the corners of the column-shaped object including the circle of the same curvature such as the outer edge of the circular object, the inner and outer corners of the circular ring object, one drive roller and the drive on the peripheral surface of the end of the circumference Two auxiliary rollers, one on each side of the rollers, which make triangular contact, provide a device configured to perform chamfering while stably rotating corners of circumferential objects of various sizes. The present invention relates to a circular chamfering device which solves the problems caused.
According to the present invention, a driving roller for contacting one circumferential surface of the workpiece to rotate the workpiece; A pair of auxiliary rollers which are in contact with the other circumferential surface of the workpiece and are spaced a predetermined distance apart from each other on both sides with respect to the driving roller; There is provided a circular chamfering device consisting of a cutter for chamfering the opposite circumferential surface of the drive roller.

Description

Circular chamfering device

The present invention relates to a device for chamfering the corners of a curved portion having the same curvature, such as a circular or circular ring shaped object. More specifically, in order to chamfer the corners of a circumferential object including a circle having the same curvature, such as the outer edge of the circular object, the inner and outer corners of the circular ring object, the end peripheral surface of the circumference (hereinafter referred to as 'circumferential surface') By providing a device configured to allow chamfering while stably rotating corners of objects having various sizes of circumference by making a triangular point contact between one driving roller and two auxiliary rollers, each positioned on each side of the driving roller. The present invention relates to a circular chamfering device which solves problems caused by manual chamfering using a conventional router.

Plates of a certain thickness made of various materials such as wood, iron, nonferrous metals, synthetic resins, etc., are processed into parts that are components of aircraft, ships, automobiles, and various mechanical devices, or used as elements of framing or exterior and interior of buildings. Insulators are used in transformers, which are important components for various industries.

In the case of wood plate, it is used for furniture of various shapes and structures because of its workability, light weight, and economic advantages, and is used for building elements, various decorations, interior and exterior materials of buildings, and as an insulator inside transformers. Is used.

There are various kinds of apparatuses according to the processing type of the plate, such as cutters and cutters for cutting to a certain shape, turning and milling machines for plane processing, chamfering device or chamfering machine for processing the edge of the plate.

Since the edge of the plate or the workpiece having a certain shape is a sharp angled part, it is necessary to finish it, which is called chamfering or chamfering. The chamfering device used here is a router for hand tools used for manual work and a CNC router for automated work.

CNC routers can accept a wide range of workpieces, from small to large, and can carry out straight chamfering while moving in a constant direction, or perform chamfering while drawing a trajectory of a curve. Hand tool routers are often used to make small-size boards and furniture.

Conventional chamfering device as described above is suitable for straight chamfering or chamfering of a gentle curve, mainly used when manufacturing furniture, the use in the industrial field where the complex shape or a special shape such as a circular or circular ring is used It was inappropriate. Therefore, chamfering of specially shaped woods, including general furniture, was done by hand using hand-held routers.

In particular, the ring-shaped insulator used as the insulator of the transformer has an outer diameter of 400 mm to 3,000 mm, and is formed in a ring shape instead of a disc, so even if chamfered, both upper and lower parts of the outer diameter end and upper and lower parts of the inner diameter end must be performed. It was not possible with the chamfering device of.

Therefore, in order to chamfer the above-mentioned round ring insulator, in the conventional case, the operator directly performed using a router, which is a hand tool, and thus could not be precisely chamfered, and there was a problem that the chamfering work took a long time.

An object of the present invention is to provide an apparatus capable of chamfering the circumferential edge of a curved portion having a constant curvature, such as a circular or round ring shape, like a round ring insulation as described above.

In order to achieve the above object, one driving roller is brought into contact with the circumferential surface to be processed, and the contact roller is installed to be in contact with the circumferential surface opposite to the circumferential surface to be processed. Two auxiliary rollers are provided so that the point where the driving roller and the two auxiliary rollers come in contact with the circumference form a triangle, so that even if the circumferential surface has various curvatures, the three rollers can be stably and accurately rotated. By rotating the workpiece with the circumferential surface, the auxiliary roller installed on the opposite side of the drive roller is rotated while supporting the workpiece to keep the position accurately, to provide a structure that can precisely chamfer the edge of the circumferential surface by the cutter do.

According to the present invention, the workpiece is brought into contact with the three vertices of the triangle by one driving roller and two auxiliary rollers, thereby not only stably supporting the workpiece but also supporting any curvature (any size). In addition, the chamfering device can be miniaturized by rotating the chamfer to rotate the chamfer, and the chamfering device can be precisely chamfered even in a complicated and large workpiece. It is effective to solve various problems.

1 is an overall appearance of the present invention
2 is a side view of the present invention
3 is a detailed view of the cutter mounting portion
4 is a chamfered state diagram of the outer circumferential surface and the inner circumferential surface of the workpiece

The present invention can be applied to all the workpieces 50 having the same curvature, such as a circle. In particular, the workpiece 50 having the shape of a circular ring may have a specialized configuration to chamfer the inner and outer circumferential surface very easily.

The present invention is also possible to chamfer the circumferential surface of the workpiece 50 in the form of a disc, but the following describes the configuration and operation of the present invention using a circular ring as the workpiece 50.

First, the present invention can chamfer both the circumferential surface of the workpiece 50 in the form of a disc and a circular ring by using one driving roller 1 and two auxiliary rollers 2. In this case, in the example shown in FIG. 4, the upper and lower two auxiliary rollers 2 and the left driving roller 1 or the left upper and lower two auxiliary rollers 2 and the right driving roller 1 may be configured. Can be.

In the case of the first embodiment, the driving roller (1) in contact with the one circumferential surface of the workpiece (50) to rotate the workpiece (50); A pair of auxiliary rollers 2 which are in contact with the other circumferential surface of the work piece 50 and are spaced apart from each other by a predetermined distance from both sides with respect to the driving roller 1; It consists of the cutter 3 which chamfers the circumferential surface of the opposite side which the drive roller 1 contacted.

In order to adjust the distance between the driving roller 1 and the pair of auxiliary rollers 2, the driving roller 1 or the pair of auxiliary rollers 2 are installed so that the work piece of various curvatures ( 50).

In the second embodiment, as shown in Figure 4, it can be said to be specialized in the workpiece 50 of the circular ring, which is a structure that can selectively chamfer the inner and outer circumferential surface of the circular ring.

In this case, the auxiliary roller (2) provided at a position corresponding to the vertex of the rectangle; Two driving rollers (1) installed at a predetermined distance apart from the auxiliary rollers (2); A cutter (3) installed between the two driving rollers (1) and chamfering the circumferential surface of the workpiece (50) located therein; the driving roller (1) or the auxiliary roller (2) It is installed to be moved, and is a structure capable of selectively chamfering the inner and outer circumferential surface of the circular ring-shaped workpiece 50.

In the first embodiment and the second embodiment, the pressing roller 4 is provided at the upper part of the portion where the workpiece 50, which is a space portion between the driving roller 1 and the auxiliary roller 2, is located. It can be configured to support the workpiece 50 in the chamfering operation. In addition, the cutter 3 is installed to be movable up, down, left and right, and corresponds to various curvatures, and in the case of the circular ring-shaped workpiece 50, the cutter 3 is easily moved to the inner and outer circumferential surfaces.

The working relationship of the first embodiment is described as follows.

In the case of circular plates with a certain thickness, only the upper and lower edges of the outer circumferential surface need to be chamfered. Since one driving roller 1 and two auxiliary rollers 2 are installed at the positions of the three vertices of the triangle, in the case of the circular workpiece 50, the three rollers are brought into contact with the outer circumferential surface thereof. And the cutter 3 is located in the outer peripheral surface on the opposite side facing the drive roller 1.

Accordingly, when the driving roller 1 is rotated, the workpiece 50 is rotated, and the auxiliary roller 2 allows the workpiece 50 to be stably rotated, while supporting the impact and vibration of the cutter 3. Ensure precise chamfering.

Things other than the above will be described in detail in the working relationship of the second embodiment below.

The second embodiment may be referred to as a structure optimized for the chamfer of the workpiece 50 of the circular ring shape. An example of a workpiece 50 of a circular ring is formed of an insulating material such as aggregate wood used as an insulator such as a transformer. The width of the ring is 15 to 300 mm, the thickness is 9 to 40 mm, and the diameter of the outer circumferential surface is 400 to 3,000. It is about mm. Even if the workpiece | work 50 of various sizes is made into the structure which the drive roller 1 or the auxiliary roller 2 can move, it can accommodate all and can work.

First, in order to chamfer the outer circumferential surface, the workpiece 50 is placed on the work table as shown in FIGS. 1 and 4 (a). Since the outer circumferential surface is chamfered, the cutter 3 is installed in contact with the outer circumferential surface as shown in FIGS. 2 and 4 (a), and is fixed together with the cutter 3 to fix the workpiece 50 as if it is to be squeezed. In order to achieve this, the driving roller 1 is positioned in contact with the inner circumferential surface.

The workpiece 50 is thus positioned between four auxiliary rollers 2 and between two drive rollers 1. In addition, in FIG. 4 (a), the left driving roller 1 and the right two auxiliary rollers 2 contact the inner and outer circumferential surfaces of the workpiece 50 to make triangular contact points.

Since the driving roller 1 may be installed in a structure moved by the servo motor 5a as shown in FIG. 2, the driving roller 1 is in contact with the inner circumferential surface of the workpiece 50 by the operation of the servo motor 5a. Accordingly, the driving roller 1 moves to contact the inner circumferential surface of the workpiece 50, and the workpiece 50 moves by the continuous movement so that the outer circumferential surface contacts the two auxiliary rollers 2.

It is also possible to install the auxiliary roller 2 so that it can be moved. At this time, the auxiliary roller 2 is moved to be in contact with the outer circumferential surface of the workpiece 50. The auxiliary roller 2 may be configured to be moved by a cylinder by a certain distance, and may be configured to be moved by means such as a servo motor. In addition, the auxiliary roller 2 may be configured to absorb vibrations of the workpiece 50 in combination with elements having elastic force such as coil springs or air springs.

Since the two auxiliary rollers 2 are spaced apart from each other by a predetermined distance, one contact point is formed on the inner circumferential surface and two contact points are formed on the outer circumferential surface. Since the three contact points are in perfect contact with the circumferential surface having a constant curvature, it is a stable supporting structure.

2 and 3, the cutter 3 is lowered by the servo motor 5b to chamfer the outer circumferential surface of the workpiece 50. At this time, the pressing roller 4 is lowered at the same time as the cutter 3 to come into contact with the upper surface of the workpiece 50. The pressing roller 4 may be implemented in a structure moving independently of the cutter 3, it is preferably configured to move up and down with the cutter (3). And the pressing roller 4 may be implemented in a structure that is lifted by the cylinder 6 to adjust the more accurate lifting distance.

Therefore, the cutter 3 is adjusted by the servo motor 5b so as to be in the correct position, and the pressing roller 4 is finely adjusted so as to press the upper surface of the workpiece 50 by the cylinder 6 again. And the cylinder (6) of the pressing roller (4) can act as an air spring to absorb the vibration of the pressing roller (4) even when the surface of the workpiece 50 during the chamfering operation is uneven. Preferably, it can also be comprised by springs other than the said cylinder 6, etc.

Such a series of operating relationships can also be configured by computer programming. That is, when the input of the ring width, the outer diameter and the inner diameter, the thickness, the selection of the outer circumferential surface or the inner circumferential surface, which is the chamfered position, is input through the input device, the driving roller 1 and the auxiliary roller 2, The cutter 3, the pressing roller 4, and the like may be configured to operate automatically. Naturally, subsequent operating relationships can also be configured automatically.

And the drive roller 1 is rotated by the motor 7a like FIG. 2, and the cutter 3 is also rotated by the motor 7b at the same time. The workpiece 50 is stably supported by the driving roller 1 and the two auxiliary rollers 2 while only rotating in place. And the edge part of the circumferential surface is chamfered by the cutter 3.

After chamfering the upper edge of the outer circumferential surface of the workpiece 50, the lower edge must be chamfered again, which can be done simply by replacing only the cutter 3 or by using the cutter 3 which can be chamfered at the same time. And it is natural that the same chamfer can be performed by overturning the to-be-processed object 50.

When the chamfer of the outer circumferential surface is completed, the chamfer of the inner circumferential surface is performed. That is, as shown in Fig. 3, the cutter 3 and the pressing roller 4 are lifted by the servo motor 5b, and the cutter 3 is moved to the position of the inner circumferential surface by the feeding motor 7c. Is moved. The pressing roller 4 may be configured to have a length capable of pressing the workpiece 50 even when the cutter 3 is moved, or may be configured in plural to operate according to the machining of the outer circumferential surface or the inner circumferential surface, respectively. have.

And in the state of Fig. 4 (a) is reset to the state of Fig. 4 (b), the two drive rollers 1 are moved to the left so that the right drive roller 1 is in contact with the outer circumferential surface of the workpiece 50 do. Then, by continuing the movement of the right drive roller 1 or the movement of the two left side auxiliary rollers 2, one drive roller 1 and two auxiliary rollers 2 are respectively formed on the outer circumferential surface of the workpiece 50. In contact with the inner circumferential surface, a triangular point contact is made to stably support the workpiece 50 having a circular shape.

As shown in FIG. 2, the movement of the two driving rollers 1 may be made by separate servo motors 5a, or may be configured to be moved simultaneously by using one servo motor 5a. have.

When the driving roller 1 and the auxiliary roller 2 are positioned, the cutter 3 and the pressing roller 4 are lowered by the servo motor 5b, and the operation such as chamfering of the outer circumferential surface is performed.

As described above, according to the present invention, the circumferential edge of the circular workpiece 50 having a constant curvature is stably supported by one driving roller 1 and two auxiliary rollers 2, and chamfering is performed. Regardless of the size of 50), a simple configuration enables all chamfering operations.

1: driving roller 2: auxiliary roller
3: cutter 4: pressing roller
5a, 5b: Servo Motor 6: Cylinder
7a, 7b, 7c: Motor 50: Workpiece

Claims

A driving roller 1 in contact with one circumferential surface of the workpiece 50 to rotate the workpiece 50; A pair of auxiliary rollers 2 which are in contact with the other circumferential surface of the work piece 50 and are spaced apart from each other by a predetermined distance from both sides with respect to the driving roller 1; Circular chamfering device, characterized in that consisting of a cutter (3) to chamfer the opposite circumferential surface in contact with the drive roller (1).

An auxiliary roller 2 installed at a position corresponding to a vertex of a rectangle; Two driving rollers (1) installed at a predetermined distance apart from the auxiliary rollers (2); A cutter (3) installed between the two driving rollers (1) and chamfering the circumferential surface of the workpiece (50) located therein; the driving roller (1) or the auxiliary roller (2) It is installed to be moved, the circular chamfering device, characterized in that it is possible to selectively chamfer the inner and outer circumferential surface of the workpiece (50) of circular ring shape.

2. The driving roller (1) or the pair of auxiliary rollers (2) are installed so that the distance between the driving roller (1) and the pair of auxiliary rollers (2) can be adjusted. Circular chamfering device.

The press roller (4) according to claim 1 or 2, wherein a pressing roller (4) is provided at an upper portion of the portion where the workpiece (50), which is a space portion between the driving roller (1) and the auxiliary roller (2), is placed, thereby avoiding the chamfering operation. Circular chamfering device, characterized in that for supporting the workpiece (50).

The circular chamfering device according to claim 1 or 2, wherein the cutter (3) is installed to be movable up, down, left and right.