JPS5940571B2 - Deburring method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for removing burrs formed on the edge of a plate, particularly a thin plate.

However, the word buritoriyo mentioned here includes both the ordinary meaning of burrido and chamfer.

This is because both are usually carried out on the ridge at the end of the plate, and the methods and equipment are generally similar, and the difference lies primarily in how far the tool is pushed into the ridge.

Various methods and devices for removing hair as described above have been known in the art.

For example, tools such as a galan, a puff, an ordinary cutter, and a belt grinder are used.

Although these tools are effective depending on the type of plate, various problems arise when the plate is thin.

This is because when the plate is thin, high accuracy is often required for the cutout dimensions, and the tool often bites into the plate.

A typical example is silicon steel sheets used in electrical equipment.

Many of these silicon steel plates are used with a thickness of 0.5 m+y+ or less, and the deburring size is required to be small so that the insulating coating applied to the surface is not peeled off as much as possible.

That is, a width of 0.3 mm or less is often required.

When applying this type of removal force, using a gun or puff, the width of the burr build-up force increases, when using a regular cutter, the cutter tends to dig into the plate material, and when belt grinding, the life of the tool is reduced. is short, and when processed with a grinder, secondary ridges occur.

In order to avoid this inconvenience, the use of a disc cutter was considered, but this cutter has the advantage that it hardly bites into the board even when used for deburring thin boards, but compared to the conventional This method of use had the disadvantage that its lifespan was relatively short, between that of belt grinding and grinder processing.

The conventional method of using a disc cutter is to remove burrs by operating the disc cutter on the edge of the workpiece while the plane containing the cutting edge circle is positioned approximately parallel to the edge of the workpiece.

In this method, the cutting edge circle acts on the edge of the workpiece at two locations, so even if deburring is performed at the first location, secondary burrs will occur at the later location, so if precision deburring is required, It's not convenient.

In addition, since the cutting edge is applied to the edge of the workpiece at two locations, the cutting edge of the disc cutter wears out quickly, resulting in a short service life.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and device for removing burrs from a plate, such as a steel plate, that can extend the life of a disc cutter.

In order to achieve the above object, in the knife removal force method of the present invention, the cutting edge circle of the disc cutter is tilted with respect to the surface of the plate on which the burr is applied and also to the edge of the workpiece. If it is pressed against the machining edge, it will remove the spots.

The direction of inclination of the disc cutter with respect to the processed edge is such that the cutting edge circle acts on the processed edge on the upstream side with respect to the movement of the plate and moves away from the processed edge as it goes downstream.

Furthermore, the apparatus of the present invention for carrying out the above method is capable of holding a disc cutter for deburring at an angle such that the cutting edge circle forms a predetermined angle with respect to the surface of the plate to be moved. Further tilt the cutting edge circle inclined as shown in the above-mentioned direction with respect to the edge of the workpiece, and move the disk cutter while maintaining the inclination relationship between the disk cutter and the plate body as described above. However, it has a structure that allows one location on the upstream side of the disc cutter to act on the edge of the workpiece.

If the edge of the plate is removed using the above method and apparatus, the cutter will not dig into the plate because a disc cutter is used.

Also, if only one part of the cutting edge circle of the disk cutter is pressed against the edge of the workpiece, the cutting is performed, so if two parts of the cutting edge circle are pressed against the edge of the workpiece, the scraping is performed. There was no secondary burr at the edge, which was the case with the conventional method, and the life of the disk cutter was approximately doubled.

Next, an example will be described.

Reference numeral 10 in FIG. 1 is a loading device, and 50 is a plate supporting device that supports the plate 52.

A plurality of devices 50 are lined up at right angles to the plane of FIG. 1, and a plate 52 placed on a pedestal 54 provided at the top is placed at right angles to the plane of FIG. 1 by a plate supply device (not shown). direction.

The disc cutter 12 is driven by a motor 14.

In the figure, the disc cutter 12 is directly attached to the rotating shaft 14a of the motor 14, but it is also possible to use a motor with a built-in speed reduction mechanism (not shown) or an appropriate speed reduction device (not shown). It's okay.

The motor 14 is mounted on an inclined surface 16a provided on the tool mounting plate 16.
installed on.

To vary the height of the disc cutter 12 from the floor and the angle acting on the plate 52, tool mounting plates 16 of various shapes and sizes can be used.

The moving table 20 in FIG. 1 has a built-in moving mechanism (not shown).
is moved in the left-right direction (indicated by arrow A) in the figure.

Therefore, the burr removal device 10 including the movable table 20 is moved as a whole in the left-right direction in the figure.

On the movable table 20, there is a rotating device 22 equipped with a gear mechanism 22a consisting of a worm 28 and a worm wheel 30.
is placed.

A nozzle 26 is attached to a shaft 24 that projects from the rotating device 22 toward the front in the figure, and a worm 28 that meshes with the worm wheel 30 is attached to the shaft 24.

The worm wheel 30 is fixed to a rotating shaft 32 supported by the device 22 using a key 34, and the tool stand 36 is key-coupled to the rotating shaft 32 via a key 38.

FIG. 2 shows an example of a typical disc cutter used in this device.

60 in the figure is the main body of this disc cutter 12, and a shaft attachment part 6 that attaches this disc cutter to the shaft from the back side of the central part.
2 is extending.

An annular cutting edge portion 66 is brazed to the front surface side of the main body 60, that is, the periphery of the main surface 64 facing the workpiece.
It is fixed with screws, adhesive, etc.

The cutting edge portion 66 is formed from a hardened metal, and includes a flank surface 68 that protrudes from the main surface 64 and forms a predetermined angle γ with the main surface 64, and a rake surface 70 that forms an angle α with the axis of the disc cutter 12. The tip of the cutting edge portion 66 forms a cutting edge circle 72 centered on the axis of the disk cutter.

Since the disk cutter 12 is already known, further detailed explanation will be omitted.

In FIG. 1, when the handle 26 is rotated and the worm 28 is rotated, the worm wheel 30 and the rotating shaft 32 are
It rotates around the X-X line extending to the left and right of the figure.

Therefore, the tool stand 36 rotates about the X--X line together with the tool mounting plate 16 mounted on the tool stand.

Therefore, by operating the nozzle 26, the disc cutter 12 mounted on the tool mounting plate 16 is rotated about the axis X--X.

FIG. 1 shows a case where the rotational axis Y-Y of the disc cutter 12 is parallel to the plane of the paper and the cutting edge circumference 72 appears to be in a straight line.

A plate 52 is placed on a plate supporting device 50 drawn on the right side of the stacking device 10 via a pedestal 54, and is moved onto the paper surface of FIG. 1 by an appropriate drive device (not shown). The edge of the plate 52, that is, the edge 80 to be processed is oriented at right angles to the plane of the paper.

In the state shown in FIG. 1, if the disk cutter 12 is rotated and the burr force device 10 is moved to the right, the disk cutter 12 will press its cutting edge circle T2 against the edge 80 of the workpiece to remove burrs. However, in this case, the cutting edge circle contacts the workpiece edge 80 at two places, so the workpiece edge 80, which is burred at the upstream side of the movement of the plate, will be applied to the workpiece edge 80 on the downstream side. This results in drawbacks such as secondary burrs being generated by the action of the cutting edge circle 720 and the life of the disc cutter 12 being short.

Therefore, in order to effectively deburr using this deburring device 10, operate the handle 26 in advance to tilt the disc cutter 12 from the state shown in FIG.
0 to the left and act on the edge 80 of the plate 52.

In this case, the cutting edge circle 72 of the disc cutter 12 acts on the edge 80 to be processed at one location, and the cutting is performed at this one location.

At this time, the relative positions of the disk cutter 12 and the plate 52 are as shown in FIG.

FIG. 4 shows a case in which the disc cutter 12 in FIG. 1 is rotated counterclockwise about the rotating shaft 32 when viewed from the left, and the plate 52 is rotated from the back side at right angles to the paper surface of the figure. The disc cutter 12 is sent to the front side and rotated in the direction of the arrow.

As can be seen from FIG. 4, since the disc cutter 12 is inclined as described above, the edge 80 of the workpiece is removed at one point L on the cutting edge circle 72.

An angle indicating the relative relationship between the disk cutter 12 and the edge 80 to be processed, that is, an angle ε2 (hereinafter referred to as a cutting angle) between the plane including the cutting edge circle of the disk cutter 12 and the edge 80 to be processed is This angle is appropriately selected depending on the type of body, the type of disc cutter, and other conditions, and is realized by operating the handle 26.

FIG. 1 shows the arrangement of the lifting force device 10 in the case where the ridge generated at the upper left end of the plate body 52 is removed; however, in actual work, the first A device similar to the burr removal device 10 shown in the figure is installed symmetrically to perform burr removal on the upper right edge.

In addition, another burr force device is installed on both sides at an appropriate position upstream or downstream of the burr removal position, and the disc cutter 12 is applied to the ridge at the lower end of the plate 52 from diagonally below, thereby removing the burr from the ridge. You can make a claim.

FIG. 5 shows the positional relationship between the cutting edge circle 72 of the disc cutter shown in FIG. be.

To simplify the illustration, the disc cutter is represented by a cutting edge circle 72.

To show the position of the motor 14 that drives the disc cutter, the motor is drawn in front of the cutting edge circle.

52b and 72b marked with two-dot chain lines are the surface 5 of the plate.
2a and the cutting edge circle 72, the arrow indicates the direction of rotation of the disk cutter, M indicates the direction in which the plate 52 is moved, and L indicates the direction in which the plate 52 is moved, as in the case of FIG. Indicates where it will be removed.

As can be seen from Fig. 5, the cutting edge circle 72 is the workpiece side surface 5.
2a, and forms an angle ε1 with the processed ridge 80.

Pl in the figure is an arbitrary point on the workpiece edge 80), and P2 is the foot of a perpendicular line drawn from point Pl to the plane 72 including the cutting edge circle 72.

The cutting angle ε2 can take a value exceeding 0 and smaller than 90 degrees, but it is better to use a value exceeding 0 and smaller than 10 degrees in order to perform a good cutting.

If the device of the above embodiment is used to deburr the edge of the plate, the edge of the edge of the plate can be deburred by using a disk cutter tilted at an appropriate angle ε2. This is done by making the point act on the edge.

Therefore, the number of times that each part of the circumference of the cutting edge performs the deburring action is approximately halved, and the life of the disc cutter can be extended accordingly.

According to the results of actual tests, it has been found that the life of the disc cutter can be approximately doubled using the method and apparatus of the present invention.

Note that the above description is an example, and various modifications can be considered.

For example, to rotate the tool stand 36, it is of course possible to use other known rotation mechanisms instead of using a worm and a worm wheel, and the movable stand 20 may also be provided with an external drive means. It may be moved by

[Brief explanation of drawings]

FIG. 1 is a front view of the burr loading device of the present invention, FIG. 2 is a side view of an example of a disk cutter used in the device of FIG. 1, and FIG. Figure 4 shows the positional relationship between the disc cutter and the plate when the cutting angle is adjusted to O, and Figure 4 shows the positional relationship between the disc cutter and the plate when the cutting angle is not 0 in the device shown in Figure 1. FIG. 5 is an explanatory perspective view showing the mutual relationship between the disc cutter and the plate shown in FIG. 4 and the angle of the thrust force. 10... Bashi-picking device, 12... Disc cutter, 14
...Motor, 14a... Rotating shaft, 16... Tool mounting plate, 16a... Inclined surface, 20... Moving table, 22...
...Second tilting mechanism, 22a...Rotating mechanism, 32...
- Swing axis, 36... Rocking table, 50... Plate body support device, 52... Plate body, 52a... Surface, processed side surface,
52b... Extension plane, 66... Cutting edge portion, 12...
Cutting edge circle, 12b...extension plane, 80...edge, processed edge.

Claims (1)

[Claims] 1. A cutting edge circle formed by a ring-shaped cutting edge provided at the tip of a rotating disk cutter is pressed against the ridge extending in the moving direction of a plate moving in a predetermined direction. In this method, the disk cutter is rotated around a straight line substantially parallel to the edge, that is, the edge of the workpiece, and a plane including the cutting edge circle is aligned with the workpiece plate. a first step of positioning the blade so that it is inclined at a substantially predetermined first angle with respect to the surface of the body, that is, the surface of the workpiece, and that the plane including the cutting edge circle and the surface of the workpiece intersect at two intersections; ; The disk cutter is moved around a straight line defined at right angles to the edge of the workpiece and approximately parallel to the surface of the workpiece, and the one on the downstream side of the movement of the plate among the two intersections; a second step of rotating the disc cutter by a predetermined second angle in a direction away from the workpiece edge and in a direction in which something on the upstream side approaches the workpiece edge; a third step of abutting the edge of the workpiece at only one location; and a burr removal force method in which the disc cutter is pushed toward the edge of the workpiece and the burr of the edge of the workpiece is deburred at the only location. 2. Claim No. 2, wherein the angle between the plane including the cutting edge circle of the disk cutter and the edge of the workpiece after completing the first step and the second step is greater than 0 degrees and smaller than 10 degrees. The deburring method described in Section 1. 3. Press the cutting edge circle formed by the ring-shaped cutting edge provided at the tip of the rotating disc cutter against the ridge extending in the direction of movement of the plate moving in a predetermined direction to remove the burr on the ridge. A device for applying force, wherein the rotating shaft of the disk cutter is approximately perpendicular to the edge being cut, that is, the edge of the workpiece, and the cutting edge circle is at a predetermined angle with respect to the surface of the plate. A plane that is capable of supporting the disc cutter so as to form an angle of 1, and is an extension of the cutting edge circle of the attached disc cutter and the surface of the plate body including the ridge to be machined, that is, the surface of the side plate body to be machined. a first tilting mechanism having a shape and size that allows the disk cutter to be installed at a height position where the two intersect with each other; substantially perpendicular to the edge of the workpiece; and a rocking shaft that extends substantially parallel to the surface of the plate and is rotatably provided, and the first tilting mechanism is attached to the rocking shaft while supporting the first tilting mechanism. Of the two intersections, the one on the downstream side of the plate movement moves away from the edge to be processed, and the one on the upstream side approaches the edge to be processed.
a second tilting mechanism comprising a rocking table capable of rotating through an angle of , and a rotation mechanism 22a that pivotally supports the rocking table and rotates the rocking table; supporting the first and second tilting mechanisms; and a movable table that moves substantially parallel to the swing axis and presses one point of the cutting edge of the disk cutter against the edge of the workpiece to remove the edges.