JP2002200525A - Deburring tool and deburring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deburring tool that can quickly and reliably deburrs circumferential portions of a workpiece with a plurality of differently shaped circumferential portions, via a small number of tool changes. SOLUTION: For the differently shaped circumferential portions W1 to W9 included in a machined region, a plurality of cutting edges 11 to 16 are formed in conformance to the circumferential portions W1 to W9. If the circumferential portions W1 and W6 have an arc shape, the cutting edges 11 and 14 are preferably sized and shaped substantially the same as the circumferential portions W1 and W6. If the machined region has a groove shape, the cutting edges 12, 13, 15 and 16 are preferably tapered for abutment against the circumferential portions W2 to W5 on both sides of a groove Wg.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring tool and a deburring method for removing burrs generated on a peripheral portion of a processed portion by moving a cutting blade along the peripheral portion after processing a workpiece. About.

[0002]

2. Description of the Related Art With an automatic lathe having a complex processing function such as cutting and turning, when a workpiece is subjected to processing such as drilling or grooving, burrs or burrs are formed on the processed part. (In this specification, these are collectively referred to as “burr”). Such burrs, for example, by mounting a deburring tool such as a chamfering tool or a rotary tool on the tool post, and moving the deburring tool along with the tool post along a peripheral portion where burrs are generated by processing. Had been removed. This will be described for the workpiece W as shown in FIG.

The workpiece W has a flange portion Wf and a shank portion Ws having a circular cross section formed on both sides of the flange portion Wf. The shank Ws is turned from the end along the axis CL of the workpiece W to form a hole Wh extending to the vicinity of the flange Wf. A groove Wg penetrating from the outer periphery to the hole Wh is formed at the tip of the shank Ws. This groove Wg
Extends parallel to the axis CL from one end of the shank portion Ws to an intermediate position. The two grooves Wg are formed at symmetrical positions of the shank Ws. The bottoms of the two grooves Wg, Wg are located in the same plane orthogonal to the axis CL. The hole Wh and the groove Wg are formed by, for example,
The lathe is gripped by a chuck provided on the main shaft of the lathe, and is turned or cut by a tool such as a cutting tool or a rotary tool mounted on the tool rest. At this time, a peripheral portion of the workpiece W surrounding the groove Wg Burrs occur at W1 to W8 and the inner peripheral edge W9 of the hole Wh.

Conventionally, burrs generated on the peripheral portions W1 to W9 are manually removed by using a file or the like in a separate process after processing is completed, or a tool such as a chamfering tool or a rotary tool mounted on a tool rest or the like is used. Has been removed by moving along the peripheral portions W1 to W9. Further, for example, Japanese Patent Application Laid-Open No. 9-29
As described in Japanese Patent No. 5272, the deburring tool held by the robot is moved along the peripheral portions W1 to W9.

However, the above-mentioned conventional deburring operation has a problem that the deburring time required for one workpiece is long and is not suitable for mass production. Further, there is a problem that a complicated program is required to automatically move the deburring tool along the peripheral portions W1 to W9. Further, a corner portion where the peripheral portion W1 located at the bottom of the groove Wg and the peripheral portions W2 and W3 on both sides of the groove intersect, a peripheral portion W6 and peripheral portions W4 and W4.
There is also a problem that it is extremely difficult to completely remove burrs generated at a corner portion where 5 intersects.

Further, depending on dimensions such as the width of the groove Wg and the thickness of the shaft portion Ws, the deburring tool may not be able to be inserted sufficiently to the depth of the groove Wg, and the peripheral portion W4 on the side of the hole Wh may be insufficient. There is a problem that deburring of W5 and W6 may be incomplete or impossible.
Further, the peripheral portions W1 and W6 that are curved in an arc shape have problems that the deburring is incomplete and that a deburring tool needs to be replaced with an appropriate one.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to reduce the deburring of the peripheral portion of a workpiece having a plurality of peripheral portions having different shapes by reducing the number of tool changes. It is an object of the present invention to provide a deburring tool and a deburring method that can be performed quickly, reliably, and easily, and can be easily automated.

[0008]

In order to solve the above-mentioned problems, the invention according to the first aspect of the present invention is to reduce burrs generated on a peripheral portion of a processing portion after processing a workpiece along the peripheral portion. A deburring tool to be removed by moving in a deburring direction, wherein each of the peripheral portions having a different shape included in the processing portion has a plurality of cutting blades formed in accordance with the peripheral portion. According to this configuration, the burrs on the peripheral portion can be removed only by moving the cutting blade formed in accordance with each of the peripheral portions in the deburring direction along the peripheral portion. In addition, since a plurality of cutting edges are integrally provided for a plurality of peripheral portions having different shapes, it is possible to perform a deburring operation with a small number of man-hours for changing the cutting blade without having to replace a deburring tool. .

According to a second aspect of the present invention, when the peripheral portion of the processing portion has an arc shape, the cutting edge has substantially the same size and shape as the peripheral portion. According to this configuration, deburring of the arc-shaped peripheral portion can be easily and completely performed. Further, it is possible to continuously perform the deburring work without having to replace the deburring tool.

According to a third aspect of the present invention, when the processing portion has a groove shape, the groove has a tapered cutting blade which comes into contact with the peripheral portions on both sides in the deburring direction of the groove.
According to this configuration, since the tapered cutting blade removes the burrs on both sides of the groove in the deburring direction at one time at a time, the time required for deburring can be greatly reduced.

According to a fourth aspect of the present invention, when a plurality of grooves having different groove widths are formed in the workpiece, or the groove width of one groove is tapered or changes stepwise in the deburring direction. In such a case, the blade width of the cutting blade is formed to match the smallest groove width. According to this configuration, when a plurality of grooves having different groove widths are formed in the workpiece, or when the groove width of one groove is tapered or changes stepwise in the deburring direction. Deburring can be performed with the deburring tool of the present invention.

According to a fifth aspect of the present invention, a cross-sectional shape is a polygonal shape, and at least one side is provided with a cutting edge which is in contact with a linear peripheral portion, and the other side is provided with the groove-shaped processing portion. Are formed in such a manner that a tapered cutting edge is formed in contact with peripheral portions located on both sides of the cutting edge. In the invention according to claim 6, the cross-sectional shape is a polygonal shape, at least one side is formed with a cutting edge that contacts an arc-shaped peripheral portion, and the other side has
The configuration is such that tapered cutting edges are formed so as to abut on peripheral portions located on both sides of the groove-shaped processing portion.

The shape of the peripheral edge portion at the end of the groove in the deburring direction may be, for example, any of a straight line or an arc. If the shape of the peripheral portion at the end is straight, a straight cutting edge may be formed, and if it is arc-shaped, an arc-shaped cutting blade may be formed. In addition, by forming the cross-sectional shape into a polygonal shape such as a pentagon or an octagon, the number of sides on which a cutting edge can be formed can be increased, and more peripheral portions are deburred with one deburring tool. It is possible.

As described in claim 7, the cross-sectional shape is as follows:
In particular, it is preferably a hexagon. When the cross-sectional shape is a polygon, as described in claim 8, a cutting edge is formed on the opposite side to abut on the peripheral edge portion of the end of the groove in the deburring direction, and on both sides of the cutting edge. It is preferable to form a cutting blade that comes into contact with the peripheral edge portions on both sides of the groove in the deburring direction. According to this configuration, it is possible to deburr almost all peripheral portions of a workpiece as shown in FIG. 13 with one deburring tool.

According to a ninth aspect of the present invention, in the case where the workpiece has a circular section, a groove is formed in the circular section along the axis of the workpiece. A blade width smaller than the width of the groove, having the same diameter and the same shape as the arc-shaped peripheral portion located at the end of the groove in the deburring direction parallel to the axis of the workpiece; And a second cutting edge formed continuously on both sides of the first cutting edge and abutting against the peripheral edge portions on both sides of the groove in the deburring direction to perform deburring on the peripheral edge portion. And a blade. According to this configuration, it is possible to deburr the peripheral portion on both sides of the groove with the second cutting blade, and to perform deburring on the peripheral portion of the arc-shaped processing portion with the first cutting blade.

According to a tenth aspect of the present invention, a concave or convex relief portion is provided at the front end portion so that the cutting edge comes into contact with the inner peripheral edge portion of the front end of the hole or the outer peripheral edge portion of the front end of the circular processing section. And a plurality of cutting blades are formed around the escape portion. According to this configuration, not only the peripheral portion of the partial arc shape or the peripheral portion on both sides of the groove, but also the burr of the inner peripheral portion of the distal end of the hole formed in the workpiece or the peripheral portion of the distal end of the processing portion having a circular cross section. It is also possible to take.

According to an eleventh aspect of the present invention, after the workpiece is processed, the burrs generated on the peripheral portion of the processed portion are removed by moving the cutting blade in the deburring direction along the peripheral portion. A method, for each peripheral portion of a different shape included in the processing portion, to prepare a deburring tool having a plurality of cutting blades formed according to the peripheral portion,
This is a method of performing deburring while switching the cutting blade for each of the peripheral portions having different shapes. According to this method, the burrs on the peripheral portion can be removed only by moving the cutting blade formed along the peripheral portion in the deburring direction along the peripheral portion. Further, since a plurality of cutting blades are integrally provided for a plurality of peripheral portions, it is possible to perform a deburring operation with a small number of man-hours without replacing a deburring tool.

According to a twelfth aspect of the present invention, when the workpiece has a circular cross section and a groove is formed in the circular cross section, the groove is formed at the end of the groove in the deburring direction. A first cutting edge having the same diameter and the same shape as the located arc-shaped peripheral portion, and having a blade width smaller than the width of the groove, and continuous on both sides of the first cutting edge; A deburring tool having a second cutting edge formed in contact with peripheral portions on both sides of the groove in the deburring direction and performing deburring of the peripheral portion; Insert the cutting blade into the groove and abut against the periphery of both sides of the groove,
While moving the deburring tool along the groove, the second cutting blade removes burrs on the peripheral portions on both sides of the groove, and at the end of the groove in the deburring direction, the deburring tool escapes from the groove. While the first cutting edge is used for deburring the arc-shaped peripheral portion. According to this method, it is possible to deburr the peripheral portion on both sides of the groove with the second cutting blade, and to perform deburring on the arc-shaped peripheral portion at the end of the groove in the deburring direction with the first cutting blade. . Therefore, it is possible to deburr almost all peripheral portions of a workpiece as shown in FIG. 13 with one deburring tool.

According to a thirteenth aspect of the present invention, when a plurality of grooves having different groove widths are formed in the workpiece, or the groove width of one groove is tapered or changes stepwise in the deburring direction. In such a case, the blade width of the first cutting blade is
The method is a method of forming a deburring in accordance with the smallest groove width, and performing deburring while moving the deburring tool so that the second cutting edge uniformly contacts the peripheral portions on both sides of the groove. According to this method, even when a plurality of grooves having different groove widths are formed in the workpiece, or even when the groove width of one groove is tapered or changes stepwise in the deburring direction. Deburring can be performed by the deburring tool of the present invention.

According to a fourteenth aspect of the present invention, there is provided a deburring tool in which a concave or convex relief portion is formed at a tip portion and a plurality of cutting blades are formed around the relief portion. The method is a method in which the workpiece is brought into contact with an inner peripheral edge portion of a hole or an outer peripheral edge portion of a circular cross section, and deburring is performed while rotating the workpiece relative to the cutting blade. According to this method, deburring not only of the groove but also the inner peripheral edge portion or the outer peripheral edge portion of the hole can be performed.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a deburring tool according to an embodiment of the present invention.
1 is a detailed view of the deburring tool of FIG. 1, (a) is a front view of the tip of the deburring tool of FIG. 1 viewed from the same direction as the Z direction, and (b) is a tip of the deburring tool of the same direction as the X direction. (C) is a plan view seen from the Y direction and the direction.

FIG. 1 shows a deburring tool 10 according to this embodiment.
This is for removing burrs generated at peripheral portions W1 to W9 of the groove Wg of the workpiece W shown in FIG. As shown in FIGS. 1 and 2A, the deburring tool 10 is formed in a substantially hexagonal shape when viewed from the front. At the tip of the deburring tool 10, six cutting edges 11 to 16 are formed on the periphery of each side. The cutting blade 11 is formed in a convex partial arc shape having substantially the same diameter as the inner diameter of the hole Wh of the workpiece W. Further, the cutting blade 11 is formed such that the blade width L1 is slightly smaller than the width of the groove Wg.

The cutting blade 14 formed at a position facing the cutting blade 11 is formed in a concave partial arc shape having substantially the same diameter as the outer diameter of the shank Ws of the workpiece W. Like the cutting edge 11, the cutting edge 14 has a blade width L2 of the groove Wg.
Is formed to be slightly smaller than the width of. On both sides of the cutting edge 11, cutting edges 12, 16 which are continuous with the cutting edge 11 are provided.
Are formed, and on both sides of the cutting edge 14, cutting edges 13 and 15 that are continuous with the cutting edge 14 are formed. The shank Ws is
Each of the cutting blades 11 to 16 is formed in a tapered shape from the flange portion wf side to the tip so as to give a clearance angle to the cutting edge, and a relief portion 17 recessed from a surface orthogonal to the axis CL is formed at the tip portion. Have been. Each of the cutting blades 11 to 16 is located around the escape portion 17. The deburring tool 10 having the above configuration is attached to a tool holder 20 so that it can be mounted on a tool rest such as an NC lathe (not shown).

FIGS. 3 to 5 are diagrams for explaining which of the cutting blades 11 to 16 is used for deburring the peripheral portions W1 to W8. For convenience of explanation,
In each of the drawings, the workpiece W is partially broken. 3B is a cross-sectional view taken along the line II in FIG. 3A, and FIG. 4B is a cross-sectional view taken along the line II-II in FIG.

Deburring of the peripheral portions W2 and W3 of the groove Wg is performed using a cutting blade 13 and a cutting blade 15, as shown in FIG. Since the blade width L2 (see FIG. 2A) of the partially arc-shaped cutting blade 14 is formed slightly smaller than the width of the groove Wg, as shown in FIG. , 15 can enter the groove Wg and come into contact with the peripheral portions W2, W3. Then, by moving the deburring tool 10 along the peripheral portions W2 and W3 (the movement of the deburring tool 10 in the direction of removing the burr is referred to as “movement in the deburring direction”). Do), peripheral portion W
2 and W3 burrs can be removed.

The peripheral edge portion W1 located at the end of the groove Wg in the deburring direction is formed by using a cutting blade 14 formed in a concave partial arc shape. Since the peripheral edge portion W1 is a part of the outer peripheral portion of the shank portion Ws, the cutting edge 14 formed to have a diameter substantially equal to the diameter of the outer peripheral portion of the shank portion Ws.
Can be brought into contact with almost the entire length of the peripheral portion W1. Although the blade width L2 of the cutting blade 14 is slightly smaller than the width of the groove Wg, it is almost the same width, so that the peripheral portion W1
It is also possible to almost completely remove burrs at corner portions between the edge portions W2 and W3.

The deburring of the peripheral portions W5 and W4 is shown in FIG.
As shown in the figure, the cutting is performed using the cutting blades 12 and 16. Since the blade width L1 of the partially arc-shaped cutting blade 11 is formed slightly smaller than the width of the groove Wg, as shown in FIG. , And abut the peripheral portions W5 and W4. The peripheral edge portion W6 located at the end of the groove Wg in the deburring direction is formed by using the cutting blade 11 formed in a convex partial arc shape. Peripheral part W
Since 6 is a part of the inner periphery of the hole Wh, the cutting blade 11 formed to have a diameter substantially the same as the diameter of the inner periphery of the hole Wh is applied over substantially the entire length of the peripheral portion W6. Can be in contact. Also in this case, the blade width L1 of the cutting blade 11
Are formed to have substantially the same width as the width of the groove Wg, so that burrs at corners between the peripheral portion W6 and the peripheral portions W5 and W4 can be almost completely removed.

Deburring of the peripheral portions W7 and W8 of the groove Wg can be performed by using the cutting blades 12 and 16 (or the cutting blades 13 and 15) as shown in FIG. The blade widths L1 and L2 of the partially arcuate cutting blades 11 and 14 (FIG. 2)
(See FIG. 5A) are slightly smaller than the width of the groove Wg, respectively, so that as shown in FIG.
In addition, a part of the cutting blade 16 (or the cutting blade 13 and the cutting blade 15) enters the tip of the groove Wg and can contact the peripheral edge portions W7 and W8.

Next, a procedure for deburring the peripheral portions W1 to W8 using the deburring tool 10 having the above-described structure will be described with reference to FIGS.
This will be described with reference to FIG. First, using the cutting blade 11, and the cutting blades 12, 16, the peripheral portions W6, W
The case of deburring 5 and W4 will be described with reference to FIG. Before starting the deburring, the deburring tool 10 is waiting at the position A shown in FIG.

As shown by the arrow in FIG. 6, the tool rest (not shown) on which the deburring tool 10 is mounted is moved in the + Z direction to bring the deburring tool 10 closer to the workpiece W. As shown in FIG. 3, since the blade width L1 of the cutting blade 11 is formed slightly smaller than the width of the groove Wg, the cutting blades 12, 16 on both sides of the cutting blade 11 enter the groove Wg, Peripheral part W
5, W4. Then, in this state, the deburring tool 10 is moved in the + Z direction. This +
The Z direction is the deburring direction. Thereby, the peripheral portion W
The burrs of 5, W4 are removed by the cutting blades 12, 16.

When the cutting edge 11 approaches the peripheral edge portion W6 at the end of the deburring direction along the peripheral edge portions W4 and W5 of the groove Wg (the state at this time is shown in the sectional view of FIG. 6B). As shown by the arrow, the deburring tool 10 is moved in the −Y direction while moving in the + Z direction. The peripheral portion W6 is
Since the shape of the cutting blade 11 is substantially the same as that of the cutting edge 11, the peripheral portion W
6 and the burrs at the corners between the peripheral portion W6 and the peripheral portions W4 and W5 can be removed. Thereafter, as shown by the arrow, the deburring tool 10 is moved in the −Z direction and retracted from the workpiece W. With the above, the cutting blade 11,
The deburring of the peripheral portions W6, W5, W4 by 12 and 16 is completed. The opposite groove Wg is also obtained by reversing the workpiece W or by reversing the deburring tool 10 and repeating the above procedure.

Next, a case where the peripheral edges W1, W2, and W3 are deburred using the cutting blades 14, 13 and 15 will be described with reference to FIG. Before starting the deburring, the deburring tool 10 is waiting at the position B shown in FIG. As shown by the arrow in FIG. 7, the tool rest (not shown) on which the deburring tool 10 is mounted is moved in the + Z direction to bring the deburring tool 10 closer to the workpiece W.

Since the blade width L2 of the cutting blade 14 is slightly smaller than the width of the groove Wg, as shown in FIG. 4, the cutting blades 13 and 15 on both sides of the cutting blade 14 are in the groove Wg. And can come into contact with the peripheral portions W2 and W3. Then, with the cutting blades 13 and 15 at the peripheral portions W2 and W3, as shown by the arrow in FIG.
While moving in the Z direction, it is moved in the + Y direction so as to follow the chamfered portion formed at the outer peripheral edge portion of the tip of the shank portion Ws. From the end of the chamfered portion, the deburring tool 10 is moved in the + Z direction. This + Z direction is the deburring direction. Thus, the burrs on the peripheral portions W2 and W3 are removed by the cutting blades 13 and 15.

When the cutting edge 14 at the tip of the deburring tool 10 approaches the peripheral edge W1 at the end of the deburring direction along the peripheral edges W2 and W3 (this state is shown in the sectional view of FIG. 7B). As shown by the arrow in the drawing, the deburring tool 10 is moved in the + Y direction while moving in the + Z direction. Since the peripheral portion W1 has substantially the same shape as the shape of the cutting blade 14,
By moving the deburring tool 10 in this manner, the burrs of the peripheral portion W1 and the peripheral portions W1 and W2, W3
Between the corners can be removed.

Thereafter, as shown by the arrow, the deburring tool 10 is moved in the -Z direction and retracted from the workpiece W. Thus, the deburring of the peripheral portions W1, W2, W3 is completed. The opposite groove Wg is also obtained by reversing the workpiece W or by reversing the deburring tool 10 and repeating the above procedure.

Next, a case where the peripheral edges W7 and W8 are deburred using the cutting blades 13 and 15 will be described with reference to FIG. Before starting the deburring, the deburring tool 10 is waiting at the position C shown in FIG. This position C is a position where the cutting blades 13 and 15 can contact the peripheral portions W7 and W8 by moving a tool rest (not shown) in the ± Y direction. As shown by the arrow in the figure, when the deburring tool 10 is moved from the position C in the −Y direction,
The cutting blades 13, 15 enter the groove Wg, and the peripheral portion W7,
The burrs of W8 are removed.

After moving the deburring tool 10 in the -Y direction so as to cross the shaft portion Ws in the radial direction, the deburring tool 10 is moved to the-direction as shown by arrows and arrows in FIG.
The workpiece is moved in the Z direction and then in the + Y direction, and is retracted from the workpiece W. After the burrs of the peripheral portions W7 and W8 are removed by the cutting blades 13 and 15, the deburring tool 10 is moved in the + Y direction by following the same path. Deburring of the portions W7 and W8 may be performed. With the above, the peripheral portion W
7. The deburring of W8 is completed.

Further, according to the deburring tool 10 of this embodiment, it is possible to deburr the inner peripheral portion of the hole Wh and the outer peripheral portion of the tip of the shank portion Ws. FIG.
FIG. 4 is a view showing a state in which a deburring tool 10 is used to deburr an inner peripheral edge portion (indicated by reference numeral W9 in the figure) of the hole Wh. By moving a tool post (not shown), the cutting blades 13 and 15 are brought into contact with the inner peripheral edge portion W9 of the hole Wh. Then, in this state, the workpiece W is rotated together with the main shaft. As a result, the cutting edge 13 and the cutting edge 15
It moves relatively along 9 and performs deburring over the entire circumference. Deburring of the inner peripheral edge portion W9 is also possible with the cutting blades 12 and 16. In the same procedure, deburring of the outer peripheral edge of the tip of the shank Ws
This can be done using the cutting blades 12, 16 or the cutting blades 13, 15.

[Other Embodiments] The present invention relates to a case where a plurality of grooves having different groove widths are formed in one workpiece, or in one groove, the groove width is tapered or stepwise in the deburring direction. The present invention can be applied to a case in which the change occurs. In this case, the dimensions of the blade widths L1, L2 of the cutting blades 11, 14 are set according to the smallest groove width.

FIG. 10 shows the relationship between the deburring tool 10 and the grooves Wg1 and Wg2 when two grooves Wg1 and Wg2 having different groove widths are formed in one workpiece W. The blade width of the cutting blades 11 and 14 is formed in accordance with the smaller groove Wg1. The procedure for deburring the groove Wg1 is as follows:
As shown in FIG. 10A, the procedure is performed in the same procedure as the procedure described in the previous embodiment. Deburring of the groove Wg2 is shown in FIG.
As shown in (b), the tapered cutting edges 13 and 15 are
g until it abuts the peripheral portions W2 and W3 on both sides,
The deburring tool 10 is inserted into the groove Wg2 until the cutting blades 12, 16 contact the peripheral edge portions W5, W4 on both sides of the groove Wg. Then, the deburring tool 10 is moved in a procedure similar to the procedure shown in FIGS. 7 and 6 to perform deburring.

In this case, in the groove Wg2, since the blade width of the cutting blades 14, 11 is smaller than the width of the peripheral edge portions W1, W6, the corner portion between the peripheral edge portions W2, W3 on both sides of the groove and the peripheral edge portion W1. And peripheral portions W4, W5 and peripheral portion W6
May not be sufficiently removed at the corner portion between the two, but in this case, the deburring tool 10 is moved to the axis CL.
To rotate the cutting blades 14 and 11 on the same circumference as the arc-shaped peripheral portions W1 and W6. Although not particularly shown, the peripheral portions W2 and W3 and the peripheral portions W4 and W5 of the groove Wg1 having a large groove width may be set such that deburring is performed on each side.

Next, the procedure of deburring when the groove width changes in a tapered shape in the deburring direction will be described with reference to FIGS. 11 (a) and 11 (c). The groove Wg of the workpiece W is shown in FIG.
As shown in the plan view of (a), the grooves are formed so that the groove width becomes smaller toward the + Z direction. Before starting the deburring, the deburring tool 10 is
1 (c) (a side view in which the workpiece of FIG. 11 (a) is partially broken) and stands by at a position B. FIG. 11 (c)
As shown by the middle arrow, the deburring tool 10 is moved in the + Z direction to bring the deburring tool 10 closer to the workpiece W.

Then, the cutting blades 13, 15 are connected to the peripheral portion W2,
W3, and as shown by the arrow in FIG.
By moving the deburring tool 10 in the + Y direction while moving it in the + Z direction, the cutting blades 13, 1 for the peripheral edge portions W2, W3 are moved.
Make the hit of 5 uniform. Deburring tool 10
When the cutting edge 14 at the tip of the edge approaches the peripheral portion W1 at the end of the deburring direction (+ Z direction), the deburring tool 10 is moved as shown by the arrow in FIG. The deburring tool 10 is removed from the workpiece W by moving it in the + Y direction.

Thereafter, as shown by the arrow in FIG. 11C, the deburring tool 10 is moved in the -Z direction to return to the original position B. In addition, when deburring a groove whose groove width changes stepwise as shown in FIG. 11B, in accordance with the change of the groove width in the step indicated by the arrow in FIG. The deburring tool 10 may be moved stepwise in the + Y direction.

Although the preferred embodiment of the present invention has been described, the present invention is not limited by this embodiment. For example, the deburring procedure includes the peripheral parts W4, W5, W6 on the hole Wh side, the peripheral parts W1, W2, W3 on the peripheral part side of the shank part Ws, and the peripheral part W on the tip side of the groove Wg.
Although the description has been made on the assumption that the deburring is performed in the order of 7, W8, the deburring order can be changed as appropriate.

In the above embodiment, the deburring tool 10 has been described as having a hexagonal cross section, but may have another polygonal shape such as a pentagonal shape or an octagonal shape. Further, in the above-described embodiment, the groove Wg is formed in the workpiece W having a circular cross section so that the peripheral portions W1 and W6 of the arc-shaped groove end (the end in the deburring direction) can be deburred. The cutting edges 11 and 14 are formed in an arc shape, but this is an example in which the cutting edge is formed in accordance with the shape of the peripheral edge portion of the groove end, and the shape of the peripheral edge portion of the groove end is arc-shaped. This indicates that any other shape may be used to form the cutting edge.

FIG. 12 shows the shape of the cutting edge when the peripheral edge at the end of the groove in the deburring direction is straight. In FIG. 12, the same parts as those in the previous embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals with “′” added thereto. As shown in FIG. 12, the peripheral edge portion W at the end of the groove Wg 'in the deburring direction
When the shapes of 1 ′ and W6 ′ are linear, the opposite cutting edges 11 ′ and 1 of the deburring tool 10 ′ having a hexagonal cross section are used.
4 'may be formed linearly.

Thus, similarly to the previous embodiment, the peripheral portions W on both sides in the deburring direction of the groove Wg 'can be formed by one operation.
Deburring of 2 'and W3', deburring of peripheral edge W1 'at the end of groove Wg' in the deburring direction, deburring of peripheral edges W4 'and W5' on both sides in the deburring direction, and deburring of groove Wg ' Deburring of the peripheral edge portion W6 'at the end in the direction can be reliably performed. In the deburring work of each of the peripheral portions W1 to W8 described with reference to FIGS. 6 to 11, it is preferable to program the processing program so as to be a so-called one-stroke drawing. Further, the processing time can be reduced.

[0049]

According to the present invention, the peripheral portion of the processing portion can be deburred in a small number of steps and in a short time, which is suitable for mass production. Further, since deburring can be performed by a simple operation, a complicated program is not required. Furthermore, since a plurality of cutting edges are formed according to the shape of the peripheral portion, burrs can be almost completely removed. Deburring can be performed almost completely irrespective of dimensions such as the width of the groove and the thickness of the shaft portion.

[Brief description of the drawings]

FIG. 1 is a perspective view of a deburring tool according to an embodiment of the present invention.

FIG. 2 is a detailed view of the deburring tool of FIG. 1;
(B) is a side view of the deburring tool as viewed from the same direction as the X direction, and (c) is a plan view as viewed from the same direction as the Y direction. FIG.

FIG. 3 shows cutting blades 14, 13, 15 and peripheral portions W1, W2.
FIG. 3B is a diagram for explaining the relationship with W3, and FIG.
FIG. 2A is a cross-sectional view taken along the line II in FIG.

FIG. 4 shows cutting edges 16, 12, 11 and peripheral portions W4, W5.
FIG. 4B is a diagram for explaining the relationship with W6, and FIG.
FIG. 2A is a sectional view taken in the direction of arrows II-II in FIG.

FIG. 5 shows cutting blades 12, 13, 15, 16 and a peripheral portion W7,
It is a figure for explaining the relation with W8.

FIG. 6 is a view for explaining a procedure of deburring using the deburring tool of the present invention, in a case where deburring of peripheral portions W6, W5, W4 is performed using the cutting blade 11, and the cutting blades 12, 16. Is shown.

FIG. 7 is a view for explaining a procedure of deburring using the deburring tool of the present invention, in a case where deburring of peripheral portions W1, W2, and W3 is performed using the cutting blade 14, and the cutting blades 13, 15. Is shown.

FIG. 8 is a view for explaining the procedure of deburring using the deburring tool of the present invention, and shows a case where the peripheral edges W7, W8 are deburred using the cutting blades 12, 13, 15, 16; I have.

FIG. 9 is a view showing a state in which the inner peripheral edge portion W9 of the hole is deburred by using the deburring tool of this embodiment.

FIG. 10 shows a deburring tool 10 and grooves Wg1 and Wg2 when two grooves Wg1 and Wg2 having different groove widths are formed in one workpiece W according to another embodiment of the present invention.
FIG.

FIG. 11 shows another embodiment of the present invention, wherein (a)
A plan view showing a groove whose groove width changes in a tapered shape in the deburring direction, (b) is a plan view showing a groove whose groove width changes stepwise in the deburring direction, and (c) is a deburring tool. It is a figure explaining the procedure which performs the deburring of (a) using, It is a side view which fractured | ruptured some workpieces of (a).

FIG. 12 is a cross-sectional view of a deburring tool according to still another embodiment of the present invention, in which a peripheral edge of a groove in a deburring direction is straight.

FIG. 13 is a perspective view of an example of a workpiece on which deburring is performed using a deburring tool.

[Explanation of symbols]

 10, 10 'Deburring tool 20 Tool holder 11 to 16 Cutting edge 17 Relief portion W Workpiece Ws Shank portion Wf Flange portion Wg Groove Wh hole W1 to W9 Peripheral portion (deburring portion)

[Procedure amendment]

[Submission date] February 13, 2001 (2001.2.1)
3)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 9

[Correction method] Change

[Correction contents]

FIG. 9

Claims (14)

[Claims] 1. A deburring tool that removes burrs generated at a peripheral portion of a processing portion after the workpiece is processed by moving the burrs along the peripheral portion in a deburring direction, wherein the deburring tool is included in the processing portion. For each different shaped peripheral part,
A deburring tool having a plurality of cutting blades formed in accordance with the peripheral portion. 2. The burr according to claim 1, wherein the cutting edge having substantially the same size and shape as the peripheral portion is provided when the peripheral portion of the processing portion is arc-shaped. Taking tool. 3. The deburring method according to claim 1, wherein when the processing portion has a groove shape, a tapered cutting edge which comes into contact with peripheral portions on both sides of the groove in the deburring direction is provided. tool. 4. In a case where a plurality of grooves having different groove widths are formed in the workpiece, or in a case where the groove width of one groove is tapered or changes stepwise in a deburring direction, The deburring tool according to claim 3, wherein the blade width of the cutting blade is formed in accordance with the smallest groove width. 5. A cross-sectional shape is a polygonal shape, and at least one side is formed with a cutting blade which comes into contact with a linear peripheral portion,
The deburring tool according to claim 1, wherein a tapered cutting edge is formed on another side to abut on peripheral portions located on both sides of the groove-shaped processing portion in the deburring direction. 6. A cross-sectional shape is a polygonal shape, and a cutting blade is formed on at least one side to contact an arc-shaped peripheral portion;
The deburring tool according to claim 1, wherein a tapered cutting edge is formed on another side to abut on peripheral portions located on both sides of the groove-shaped processing portion in the deburring direction. 7. The deburring tool according to claim 5, wherein the polygonal shape is a hexagon. 8. A cutting edge is formed on an opposing side to abut on a peripheral edge of the groove at the end of the deburring direction, and on both sides of the cutting edge, peripheral parts on both sides of the groove in the deburring direction. 8. The deburring tool according to claim 7, wherein a cutting blade is formed to abut the cutting tool. 9. The deburring parallel to the axis of the workpiece in the groove when the workpiece has a circular section and a groove is formed in the circular section. A first cutting blade having the same size and the same shape as the arc-shaped peripheral portion located at the end in the direction, and having a blade width smaller than the width of the groove; 9. A second cutting edge formed continuously on both sides and abutting against peripheral portions on both sides of the groove in the deburring direction to perform deburring of the peripheral portions. Deburring tool according to any of the above. 10. A concave or convex relief portion is formed at the distal end portion so that the cutting edge abuts on the inner peripheral edge portion of the hole distal end or the outer peripheral edge portion of the processing portion having a circular cross section. 2. A plurality of cutting blades are formed around the periphery.
A deburring tool according to any one of claims 9 to 9. 11. A deburring method for removing a burr generated on a peripheral portion of a processing portion after processing a workpiece by moving a cutting edge in a deburring direction along the peripheral portion. For each peripheral part of different shape included in the part,
A deburring method comprising preparing a deburring tool having a plurality of cutting blades formed in accordance with the peripheral portion, and performing deburring while switching the cutting blade for each of the peripheral portions having different shapes. 12. An arc-shaped peripheral portion located at the end of the groove in the deburring direction when the workpiece has a circular cross section and a groove is formed in the circular cross section. A first cutting edge having the same size as the diameter and the same shape, and having a blade width smaller than the width of the groove;
A deburring tool having a second cutting blade formed continuously on both sides of the cutting blade and having a peripheral edge portion on both sides in the deburring direction of the groove to deburr the peripheral portion; Inserting the second cutting edge of the deburring tool into the groove and abutting the peripheral edge portions on both sides of the groove, and moving the deburring tool along the groove with the second cutting edge and forming the groove with the second cutting edge. Removing the burrs of the peripheral portions on both sides, and removing the deburring tool from the groove at the end of the groove in the deburring direction, and performing the deburring of the arc-shaped peripheral portion with the first cutting edge. The deburring method according to claim 11, wherein 13. In the case where a plurality of grooves having different groove widths are formed in the workpiece, or when the groove width of one groove is tapered or changes stepwise in the deburring direction, The blade width of the first cutting edge is formed in accordance with the smallest groove width, and the deburring tool is moved so that the second cutting edge uniformly contacts the peripheral portions on both sides of the groove. The deburring method according to claim 12, wherein deburring is performed while performing the deburring. 14. A deburring tool in which a concave or convex relief portion is formed at a tip portion, and a plurality of cutting blades are formed around the relief portion, and the deburring tool is provided in a hole of the workpiece. The deburring is performed by rotating the workpiece relative to the cutting edge by abutting the peripheral edge portion or the outer peripheral edge portion of a tip end having a circular cross section. Deburring method described in 1.