JPH0683176U - Deburring equipment - Google Patents

Abstract

(57) [Summary] [Purpose] Easily remove annular burrs generated at the welded part due to friction welding etc. without damaging the work. [Structure] Removal of an annular burr 2a formed on a welded portion 6 of a rod-shaped work 2 by friction welding or the like so that the work 2 is passed through the die 3 and is punched out by a cutting edge 4 of the die 3. In the device, the annular cutting blade 4 of the die 3
A protruding blade portion 5 is formed on the circumference of the cutting blade 4 so as to project in the axial direction of the die 3 from one position on the circumference of the cutting blade 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a deburring device that removes burrs generated when a work is friction-welded.

[0002]

[Prior art]

 When a conventional rod-shaped work is friction-welded, an annular burr is generated at the welded portion. Therefore, a method of removing this burr has been conventionally proposed in Japanese Patent Laid-Open No. 4-118188.

In the deburring method of the above publication, a die having a holding hole for slidably inserting a bar-shaped work having a burr at a welded portion, a pressing means for pressing the work in the direction of the die, and a work shaft It has a pulling means for pulling in a direction, and while pulling the work by the pulling means, the work is pressed by the pressing means and the burrs are punched by the die.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional deburring method, since the burr punched out by the die is moved to the end of the work and removed from the work, the outer peripheral surface of the work may be damaged by the burr and the quality of the work may deteriorate. However, since the burr had to be moved by the length of the work, there was a problem that the device became large, and if the diameter of the work was larger than the welded part, the burr could not be extracted, so it could not be performed. There was also a problem.

The present invention has been made in order to improve such a conventional problem, and an object thereof is to provide a deburring device capable of removing burrs without damaging a work.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention removes a circular burr generated in a welded part of a work by friction welding or the like by punching the work into a die and punching it out with a cutting edge of the die. In the apparatus, a protruding blade portion is formed on the circumference of the annular cutting edge of the die so as to project in the axial direction of the die from at least one location on the circumference of the cutting edge.

[0007]

[Action]

 With the above configuration, the annular burr is partly cut in the circumferential direction by the projecting blade to axially shear it, and then the remaining burr is separated from the workpiece by the annular cutting blade and falls. To do.

[0008]

【Example】

 An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a deburring device, and FIGS. 2A, 2B, and 2C are plan views, front views, and side views of a die used in the deburring device.

In FIG. 1, reference numeral 1 denotes a main body of the apparatus, which is composed of a member 1a and a member 1b which are vertically separated from each other, and one or both of these members 1a and 1b are movable in a contacting / separating direction.

Further, in FIG. 1, reference numeral 2 denotes a work for removing the annular burr 2a generated in the welded portion 6 by friction welding, and reference numeral 3 denotes a die for removing the burr 2a.

The die 3 has a cylindrical shape having an inner diameter slightly larger than the outer diameter of the work 2 from which the burr 2a is to be removed, and a cutting edge for burr removal as shown in FIG. 4 are formed in the circumferential direction.

The cutting edge 4 for removing burrs is provided with a vertical step 4a on a dividing line that divides the circle into left and right halves, and the left half of the step 4a is a sloping cutting edge that is gradually lowered. The portion 4b is formed, and the top of the step 4a is a sharp protruding blade portion 5 for cutting burrs. The right half of the step 4a is a cutting edge portion 4c which is perpendicular to the axis of the die 3, and the lowermost portion of the cutting edge portion 4c is at substantially the same height as the cutting edge portion 4b. There is.

Next, the operation of removing the burr 2a using the die 3 will be described. The die 3 is centered with the insertion hole 1c formed in one member of the main body 1, for example, the lower member 1b. As shown in FIG. 1, the lower end side of the work 2 is inserted into the die 1 and the insertion hole 1c from above as shown in FIG.

Then, the upper end of the work 2 is brought into contact with the other member 1a of the main body 1, and in this state, the respective members 1a and 1b of the main body 1 are relatively moved in a direction in which they approach each other. As a result, the annular burr 2a generated on the welded portion 6 of the work 2 is first pressed against the projecting blade portion 5 formed on the top of the step 4a of the die 3, and the sharp projecting blade portion 5 moves left and right. It is divided into two.

After that, the left half burr 2 a is punched by the inclined cutting edge part 4 b, and the right half burr 2 a is punched by the cutting edge part 4 c to be separated from the work 2. For this reason, the burr 2a can be removed from the work 2 simply by moving the members 1a and 1b by the amount of the height of the step 4a of the die 3 plus the thickness of the burr 2a.

Further, FIGS. 3A to 3C show another embodiment of the die 3 used for deburring. In this embodiment, the die 3 has a prismatic shape, and a cylindrical hole 3a having a diameter slightly larger than the outer diameter of the work 2 is formed at the center of the die 3. A protruding blade portion 5 is formed in the center of the cutting edge 4 for removing burrs of the die 3, and inclined cutting blade portions 4d are formed on the left and right sides of the protruding blade portion 5.

In this case, the annular burr 2a formed on the welded portion 6 of the work 2 is first pressed against the central protruding blade portion 5 of the cutting edge 4 for removing the burr of the die 3 to form a sharp protruding shape. It is divided into two parts by the blade part 5. After that, the left and right portions of the burr 2a are punched by the inclined cutting edge portion 4d.

Further, FIGS. 4A to 4C show another embodiment of the die 3 used for deburring. In this embodiment, the die 3 has a cylindrical shape, and the cutting edge 4 for removing burrs at the upper end of the die 3 has two protruding blades having different heights along the circumferential direction thereof. The portions 5a and 5b and the cutting edge portion 4e are formed respectively, and these projecting blade portions 5a and 5b and the cutting edge portion 4e are perpendicular to the axis of the die 3.

In this case, the annular burr 2a formed on the welded portion 6 of the work 2 is first pressed against the high protruding blade portion 5a of the cutting edge 4 for removing the burr of the die 3, and the protruding blade portion A part of the burr 2a is punched out by the 5a. Next, the remaining portion of the burr 2a is pressed against the protruding blade portion 5b, the protruding blade portion 5b punches out a part of the remaining portion, and then the remaining portion of the burr 2a is pressed against the cutting blade portion 4e. The cutting blade portion 4e punches out the remaining portion.

Further, FIGS. 5A to 5C show another embodiment of the die 3 used for deburring. In this embodiment, the die 3 has a prismatic shape and a two-divided structure, and a cylindrical hole 3a having a diameter slightly larger than the outer diameter of the work 2 is formed at the center of the die 3. The cutting edge 4 for removing burrs of the die 3 is formed with a protruding blade portion 5 on the left side of the dividing surface 3b, and the cutting blade portion on the left side of the protruding blade portion 5 is inclined. It is done in 4d. Further, the cutting edge 4 is formed with a cutting edge portion 4d which is inclined to the right with the dividing surface 3b as a boundary.

In this case, the annular burr 2 a formed on the welded portion 6 of the work 2 is first pressed against the protruding blade portion 5 of the cutting edge 4 for removing the burr of the die 3 to form a sharp protruding blade portion. It is divided into left and right by 5. After that, the left and right portions of the burr 2a are punched by the inclined left and right cutting edge portions 4d. As described above, the die 3 is split and the left and right cutting edge portions 4d are stepped to extend the life of the die and prevent cracking.

Whichever die 3 is used, the annular burr 2a is divided in the circumferential direction by axially shearing a part of the circumferential direction thereof by the projecting blade portions 5, 5a, 5b. The remaining portion of the burr 2a is separated from the work 2 by the cutting blade portions 4b, 4c, 4d, 4e and falls.

[0023]

[Effect of device]

 As described in detail above, according to the present invention, since the protruding blade portion projecting in the axial direction of the die is formed on at least one location on the circumference of the cutting edge of the die, the annular cutting edge of the die is formed. A part of the burr in the circumferential direction is axially sheared by the protruding blade portion and divided in the circumferential direction, and then the remaining portion of the burr is separated from the work by the annular cutting blade and falls. In this way, the annular burr generated at the welded part of the work can be separated from the work in a divided state, so there is no need to move and remove the punched burr to the end of the work as in the past. .

As a result, since the work is not damaged by the burr, the quality of the work is improved, and since the stroke of the member may be short, the size of the entire apparatus can be reduced.

Even when the diameter of the work is larger than that of the welded portion, deburring can be performed by dividing and removing the burr.

[Brief description of drawings]

FIG. 1 is a front view of a deburring device according to an embodiment of the present invention.

FIG. 2A is a plan view of a die used in a deburring device according to an embodiment of the present invention. (B) is a front view of the same die. (C) is a side view of the die.

FIG. 3A is a plan view showing another embodiment of the die. (B) is a front view of the same die. (C) is a side view of the die.

FIG. 4A is a plan view showing another embodiment of the die. (B) is a front view of the same die. (C) is a side view of the die.

FIG. 5A is a plan view showing another embodiment of the die. (B) is a front view of the same die. (C) is a side view of the die.

[Explanation of symbols]

 2 Work 2a Burr 3 Die 4 Cutting edge 5, 5a, 5b, 5c Projection blade 6 Welding part

Claims (1)

[Scope of utility model registration request] 1. A deburring device for removing an annular burr formed in a welded portion of a work by friction welding or the like by passing the work through a die and punching it out by a cutting edge of the die. A deburring device, characterized in that a protruding blade portion is formed on the circumference of the cutting blade so as to project in the axial direction of the die from at least one location on the circumference of the cutting blade.