JP7169891B2 - Processing equipment, processing method - Google Patents

Description

The present invention relates to processing technology.

Conventionally, there are many techniques for processing cylindrical members (for example, Patent Document 1).

Japanese Patent Laid-Open No. 64-71527

An object of the present invention is to control the corners formed in the workpiece to a desired shape.

In order to solve the above-mentioned problems, a first aspect of the present invention provides a ring-shaped collar portion extending in the circumferential direction of the cylindrical portion formed on the outer periphery of one end of the cylindrical portion. A processing apparatus for processing a workpiece in which the other end of the cylindrical portion located on the side is closed by a bottom wall, the processing device having a cylindrical shape and being inserted through the inner side of the cylindrical portion and moving in the axial direction of the cylindrical portion. a second processing means that is movable in the axial direction of the cylindrical portion and presses one end of the cylindrical portion; a third processing means having a circular insertion hole having the same inner diameter and having the cylindrical portion inserted in the insertion hole in the axial direction; Through fourth processing means having a contact portion with which the collar portion of the workpiece through which the cylindrical portion is inserted is brought into contact, and the bottom wall of the cylindrical portion having a cylindrical shape and being inserted through the insertion hole. and a fifth processing means arranged opposite to the first processing means, inserted into the front insertion hole and movable in the axial direction, wherein the flange portion is located at one end of the cylindrical portion and at the other end of the cylindrical portion. It is bent to the end side, and only the end portion of the collar portion of the workpiece having the cylindrical portion inserted through the insertion hole is in contact with the contact portion of the fourth processing means. The first processing means inserted into the inner side of the cylindrical portion presses the bottom wall of the cylindrical portion in the axial direction, and the second processing means presses one end of the cylindrical portion in the axial direction. is a processing device in which the fifth processing means pushes the bottom wall of the cylindrical portion in the axial direction toward the first processing means against the force pushing the bottom wall of the cylindrical portion.

In the second aspect of the present invention, it is preferable that the force by which the fifth processing means presses the bottom wall corresponds to the force by which the first processing means presses the bottom wall.

In the third aspect of the present invention, the value of the force of the first processing means pressing the bottom wall and the value of the force of the fifth processing means pressing the bottom wall are values within a preset range. is preferred.

In order to solve the above problems, in a fourth aspect of the present invention, a ring-shaped flange extending in the circumferential direction of the cylindrical portion is formed on the outer periphery of one end of the cylindrical portion, and the flange is the above-described A processing method for processing a workpiece in which one end of a cylindrical portion is bent toward the other end of the cylindrical portion and the other end of the cylindrical portion located on the back side of the flange is closed with a bottom wall, The cylindrical portion is inserted into a circular insertion hole having an inner diameter equal to the outer diameter of the cylindrical portion, and the cylindrical portion is inserted through the insertion hole at the end of the collar portion of the workpiece. is brought into contact with the peripheral wall of the insertion hole, and the bottom wall of the cylindrical portion is pressed in the axial direction of the cylindrical portion by the cylindrical first pressing means inserted inside the cylindrical portion, and the second pressing means pushes one end of the cylindrical portion in the axial direction, and is inserted into the front insertion hole so as to face the first pressing means through the bottom wall of the cylindrical portion inserted through the insertion hole. a third pressing means comprising be.

According to the first aspect of the present invention, the processing device is configured such that the flange portion of the workpiece having the cylindrical portion inserted through the insertion hole is in contact with the contact portion of the fourth processing means, and the cylindrical portion is The first processing means inserted inside pushes the bottom wall of the cylindrical portion in the axial direction, the second processing means axially pushes one end of the cylindrical portion, and the first processing means presses the bottom wall of the cylindrical portion. In contrast, the fifth processing means axially pushes the bottom wall of the cylindrical portion toward the first processing means, so that the angle formed in the workpiece can be controlled to a desired shape.

In addition, according to the first aspect of the present invention, the processing device is formed in the workpiece by the fact that the collar portion of the workpiece is bent at one end of the cylindrical portion toward the other end side of the cylindrical portion. It is possible to make the desired shape of the corner with higher accuracy.

According to the second aspect of the present invention, the processing device can make the corner formed in the workpiece into a desired shape with higher accuracy.

According to the third aspect of the present invention, the processing device can make the corners formed in the workpiece into a desired shape with higher accuracy.

According to the fourth aspect of the present invention, the processing method can control the corner formed in the workpiece to have a desired shape.
Further, according to the fourth aspect of the present invention, in the processing method, the collar portion of the workpiece is bent at one end of the cylindrical portion toward the other end side of the cylindrical portion, so that It is possible to make the desired shape of the corner with higher accuracy.

FIG. 1 is a cross-sectional view showing a configuration example of a processing apparatus. FIG. 2 is a diagram showing an example of the shape of the workpiece. FIG. 3 is a diagram for explaining the first half of the machining process of the machining apparatus. FIG. 4 is a diagram for explaining the middle half of the machining process of the machining apparatus. FIG. 5 is a diagram for explaining the latter half of the machining process of the machining apparatus. FIG. 6 is a diagram showing an example of the shape of the workpiece after machining. FIG. 7 is a diagram showing another example of the shape of the workpiece.

An embodiment of the present invention will be described with reference to the drawings.
In this embodiment, a processing device is mentioned.

(Constitution)
FIG. 1 is a cross-sectional view showing a configuration example of the processing apparatus 1. As shown in FIG.

As shown in FIG. 1, the processing device 1 has a punch 10, a pad 20, a die 30, and an ejector 40. As shown in FIG. In FIG. 1 , the workpiece 100 is already attached to the processing apparatus 1 .

FIG. 2 is a diagram showing an example of the shape of the workpiece 100. As shown in FIG.

As shown in FIG. 2 , the workpiece 100 has a cylindrical portion 101 and a collar portion 102 . The cylindrical portion 101 has a bottomed cylindrical shape whose end is closed by a bottom wall 101a. The collar portion 102 is formed in a substantially disc shape on the outer periphery of the open end of the cylindrical portion 101 . Collar portion 102 is bent toward the other end side of cylindrical portion 101 and extends in the radial direction of cylindrical portion 101 . That is, the collar portion 102 has a shape that is slightly folded back from the outer circumference of the cylindrical portion 101 toward the cylindrical portion 101 . The workpiece 100 is molded into such a shape in the pretreatment process.

In the processing apparatus 1 for processing such a workpiece 100, as shown in FIG. 1, the punch 10 has a columnar shape and an outer diameter that is substantially the same as the inner diameter of the cylindrical portion 101 of the workpiece 100. . The punch 10 is movable in the axial direction of the cylindrical portion 101 of the workpiece 100 (hereinafter simply referred to as the axial direction), is inserted through the cylindrical portion 101 of the workpiece 100, and is finally It functions to push the bottom wall 101a of the workpiece 100 downward. Here, the value of the force with which the punch 10 presses the bottom wall 101a of the cylindrical portion 101 is within a preset range.

The pad 20 has an insertion hole (hereinafter referred to as a punch insertion hole) 21 through which the punch 10 is inserted. The diameter of the punch insertion hole 21 is substantially the same as the outer diameter of the punch 10 , that is, the inner diameter of the cylindrical portion 101 of the workpiece 100 . The pad 20 is movable in the axial direction, and can push downward in the axial direction the one end portion 101b of the cylindrical portion 101 through which the punch 10 is inserted. Here, the value of the force with which the pad 20 presses the one end portion 101b of the cylindrical portion 101 is within a preset range.

The die 30 faces the pad 20 and is positioned on the back side of the flange 102 of the workpiece 100 . The die 30 has an insertion hole (hereinafter referred to as a workpiece insertion hole) 31 through which the cylindrical portion 101 is axially inserted. The diameter of the workpiece insertion hole 31 is substantially the same as the outer diameter of the cylindrical portion 101 of the workpiece 100 . In addition, the upper end surface 32 of the peripheral wall of the die 30 facing the collar portion 102 is formed flat and serves as a contact portion with which the collar portion 102 comes into contact when the workpiece 100 moves in the axial direction. The die 30 is fixedly installed.

The ejector 40 has a cylindrical shape and is movable in the axial direction within the workpiece insertion hole 31 . The ejector 40 is arranged to face the punch 10 via the bottom wall 101a of the cylindrical portion 101 . The outer diameter of the ejector 40 is substantially the same as the diameter of the workpiece insertion hole 31 . The ejector 40 moves in the axial direction so as to axially push the bottom wall 101a of the cylindrical portion 101 of the workpiece 100 toward the punch 10 side. Here, the value of the force with which the ejector 40 presses the bottom wall 101a of the cylindrical portion 101 is within a preset range. Furthermore, the value of the force with which the ejector 40 pushes the bottom wall 101a of the cylindrical portion 101 corresponds to the value of the force with which the punch 10 pushes the bottom wall 101a of the cylindrical portion 101 .

(action, effect, etc.)
Next, an example of the operation of the processing apparatus 1 and its effects will be described. Here, description will be made with reference to FIGS. 1 and 3 to 5. FIG. 3 to 5 are diagrams showing the processing steps performed by the processing apparatus 1. FIG.

First, the workpiece 100 is mounted on the processing apparatus 1 . As shown in FIG. 1 , in the mounted state, the lower end 10 a of the punch 10 inserted through the punch insertion hole 21 of the pad 20 is positioned inside the cylindrical portion 101 of the workpiece 100 . For example, as shown in FIG. 1, the lower end 11 of the punch 10 is positioned substantially in the middle in the height direction within the cylindrical portion 101 of the workpiece 100 . Also, the ejector 40 is in contact with the one end portion 101b of the cylindrical portion 101 of the workpiece 100 . On the other hand, the lower end portion of the cylindrical portion 101 of the workpiece 100 is positioned within the workpiece insertion hole 31 of the die 30, and the upper end portion 40a of the ejector 40 is positioned within the workpiece insertion hole 31. It is in contact with the bottom wall 101a of the cylindrical portion 101 of 100 .

After being mounted in this way, as shown in FIG. 3, the processing apparatus 1 synchronously moves the punch 10, the pad 20, and the ejector 40 downward in the axial direction in the direction of the arrow shown in the same figure. Let As shown in FIG. 4, the processing apparatus 1 synchronously operates the punch 10, the pad 20, and the ejector 40 until the outer peripheral end portion 102a of the collar portion 102 of the workpiece 100 contacts the upper end surface 32 of the die 30. move.

Then, as shown in FIG. 5, the processing apparatus 1 moves the punch 10 in the axial direction at the timing when or immediately before the outer peripheral end portion 102a of the collar portion 102 of the workpiece 100 contacts the upper end surface 32 of the die 30. to contact the bottom wall 101a of the cylindrical portion 101 of the workpiece 100, and axially move the workpiece 100 downward by the punch 10 and the pad 20 in the direction of the arrow shown in the figure. push down. That is, the punch 10 presses down the bottom wall 101a of the cylindrical portion 101, and the pad 20 presses down the upper end portion (one end portion 101b) of the cylindrical portion 101 in the axial direction.

On the other hand, in conjunction with the movement of the punch 10 and the pad 20, the processing apparatus 1 moves the bottom wall 101a of the cylindrical portion 101 axially upward in the direction of the arrow shown in FIG. The ejector 40 pushes up the bottom wall 101a of the cylindrical portion 101 toward the 20 side. At this time, the ejector 40 pushes up against the force with which the punch 10 pushes the bottom wall 101 a of the cylindrical portion 101 .

Here, the force with which the ejector 40 pushes the bottom wall 101 a of the cylindrical portion 101 corresponds to the force with which the punch 10 pushes the bottom wall of the cylindrical portion 101 . Further, the value of the force with which the ejector 40 presses the bottom wall 101a of the cylindrical portion 101 and the value of the force with which the punch 10 presses the bottom wall of the cylindrical portion 101 are values within preset ranges.

The processing apparatus 1 molds the workpiece 100 as described above, and then discharges the workpiece 100 . Specifically, after moving the punch 10 and the pad 20 to a sufficient height in the axial direction, the processing apparatus 1 moves the workpiece 100 whose cylindrical portion 101 is accommodated in the workpiece insertion hole 31, The ejector 40 is moved axially upward to eject from the die 30 .

FIG. 6 is a diagram showing an example of the shape of the workpiece 100 after machining.

As shown in FIG. 6, the workpiece 100 after machining is formed so that the collar portion 102, which was slightly bent toward the lower end side of the cylindrical portion 101, extends radially.

(Effects of this embodiment)
(1) The processing apparatus 1 inserts the cylindrical portion 101 into the workpiece insertion hole 31, and the collar portion 102 of the workpiece 100 is in contact with the upper end surface 32 of the die 30. The inserted punch 10 axially pushes the bottom wall 101a of the cylindrical portion 101 and the pad 20 axially pushes the one end portion 101b of the cylindrical portion 101. The bottom wall 101a of the cylindrical portion 101 is axially pushed toward the punch 10 side against the force pushing the bottom wall 101a.

As a result, the peripheral wall forming the cylindrical portion 101 of the workpiece 100 is compressed in the axial direction by the punch 10, the pad 20, and the ejector 40. As a result, the inner surface of the cylindrical portion 101 inside the broken line portion shown in FIG. The corner 101c of the upper end and the corner 101d of the lower end of the outer surface of the cylindrical portion 101 are rounded. Thus, the processing apparatus 1 can control the corners 101c and 101d formed in the workpiece 100 to desired shapes.

Thereby, the workpiece 100 can secure a large area of the upper side surface 102b of the collar portion 102 and a large area of the lower side surface 101e of the bottom wall 101a. As a result, the workpiece 100, for example, when other components are attached in contact with the entire upper surface 102b of the collar portion 102 or the entire lower surface 101e of the bottom wall 101a, such other components can be attached. Increase contact area with parts.

(2) As a result of the fact that the flange portion 102 formed on one end side of the cylindrical portion 101 is bent toward the other end side of the cylindrical portion 101, the processing apparatus 1 moves the cylindrical portion 101 of the workpiece 100 in the axial direction. Compresses more effectively. As a result, in the workpiece 100, the R of the upper end corner 101c of the inner surface of the cylindrical portion 101 and the lower end corner 101d of the outer surface of the cylindrical portion 101 become smaller. In this way, the processing apparatus 1 can shape the corner formed in the workpiece 100 into a desired shape with higher accuracy.

(3) The processing apparatus 1 sets the force of the ejector 40 pushing the bottom wall 101a of the cylindrical portion 101 to a force corresponding to the force of the punch 10 pushing the bottom wall 101a of the cylindrical portion 101, thereby The cylindrical portion 101 can be compressed with an appropriate force in the axial direction. As a result, the processing apparatus 1 can shape the corner formed in the workpiece 100 into a desired shape with higher accuracy.

(4) The processing apparatus 1 sets the value of the force of the punch 10 pressing the bottom wall 101a of the cylindrical portion 101 and the value of the force of the ejector 40 pressing the bottom wall 101a of the cylindrical portion 101 within a preset range, The cylindrical portion 101 of the workpiece 100 can be compressed with an appropriate force in the axial direction. Thereby, the processing apparatus 1 can control the corner formed in the workpiece 100 to have a desired shape with higher accuracy.

In addition, in the above-described embodiment, the punch 10 constitutes, for example, the first processing means. Moreover, the pad 20 constitutes, for example, the second processing means. Further, the die 30 constitutes, for example, third processing means and fourth processing means. Further, the ejector 40 constitutes, for example, fifth processing means.

(Modified example of this embodiment, etc.)
As a variant of this embodiment, the workpiece 100 can also have other shapes. FIG. 7 is a diagram showing another example of the shape of the workpiece 100 before being processed by the processing apparatus 1. FIG. As shown in FIG. 7, the workpiece 100 has a shape in which the flange portion 102 extends radially without bending toward the lower end side of the cylindrical portion 101 . In this case, in the process shown in FIG. 4, the processing apparatus 1 moves the punch 10 in the axial direction at the timing when or just before the back surface 102c of the collar portion 102 of the workpiece 100 contacts the upper end surface 32 of the die 30. The workpiece 100 is moved downward to contact the bottom wall 101a of the cylindrical portion 101 of the workpiece 100, and the workpiece 100 is pushed downward in the axial direction by the punch 10 and the pad 20. FIG. Subsequent processing steps are the same as those described above.

Even if the workpiece 100 has such a shape, the cylindrical part 101 is compressed in the axial direction by the punch 10, the pad 20, and the ejector 40, and as a result, the upper end of the inner surface of the cylindrical part 101 is bent. The corner 101c of the outer surface of the cylindrical portion 101 and the corner 101d of the lower end of the outer surface of the cylindrical portion 101 become smaller.

In addition, as a modification of the present embodiment, the upper end surface 32 that faces and contacts the collar portion 102 can be configured by a member different from the die 30 .

Further, in the present embodiment, an annular flange extending in the circumferential direction of the cylindrical portion is formed on the outer periphery of one end of the cylindrical portion, and the other end of the cylindrical portion positioned on the back side of the flange is formed. is a processing method for processing a workpiece closed by a bottom wall, wherein the cylindrical portion is inserted into a circular insertion hole having an inner peripheral diameter equivalent to the outer peripheral diameter of the cylindrical portion; The collar portion of the workpiece, into which the cylindrical portion is inserted, is brought into contact with the peripheral wall of the insertion hole, and the bottom wall of the cylindrical portion is pressed by the cylindrical first pressing means that is inserted into the inner side of the cylindrical portion. The cylindrical portion is pushed in the axial direction, one end of the cylindrical portion is pushed in the axial direction by the second pressing means, and the bottom wall of the cylindrical portion inserted through the insertion hole is opposed to the first pressing means. The bottom wall of the cylindrical portion is first pressed against the force of the first pressing means pressing the bottom wall of the cylindrical portion by a third pressing means having a cylindrical shape and inserted into the front insertion hole. A working method of pressing in the axial direction toward the means is realized.

Here, the punch 10 constitutes, for example, the first pressing means. Moreover, the pad 20 constitutes, for example, the second pressing means. Also, the ejector 40 constitutes, for example, the third pressing means.

Also, although embodiments of the present invention have been disclosed, it will be apparent that modifications may be made by those skilled in the art without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

1 processing device 10 punch 20 pad 21 punch insertion hole 30 die 31 workpiece insertion hole 32 upper end surface 40 ejector 100 workpiece 101 cylindrical portion 101a bottom wall 101b one end (upper end part), 102 flange

Claims (4)

An annular flange extending in the circumferential direction of the cylindrical portion is formed on the outer periphery of one end of the cylindrical portion, and the other end of the cylindrical portion positioned on the back side of the flange is closed by the bottom wall. A processing device for processing a workpiece having
a first processing means having a cylindrical shape and being inserted through the inside of the cylindrical portion and movable in the axial direction of the cylindrical portion;
a second processing means that is movable in the axial direction of the cylindrical portion and pushes one end of the cylindrical portion;
A third processing in which a circular insertion hole is provided on the rear surface side of the flange and has an inner diameter equal to the outer diameter of the cylindrical portion, and the cylindrical portion is inserted into the insertion hole in the axial direction. means and
a fourth processing means having an abutment portion positioned on the rear surface side of the flange portion and contacting the flange portion of the workpiece having the cylindrical portion inserted into the insertion hole;
a fifth processing means having a columnar shape and arranged opposite to the first processing means via a bottom wall of the cylindrical portion which is inserted into the insertion hole, is inserted into the front insertion hole, and is movable in the axial direction; , and
the collar portion is bent at one end of the cylindrical portion toward the other end side of the cylindrical portion;
The flange portion of the workpiece having the cylindrical portion inserted through the insertion hole is inserted inside the cylindrical portion while only the end portion thereof is in contact with the contact portion of the fourth processing means . The first processing means presses the bottom wall of the cylindrical portion in the axial direction, and the second processing means presses one end of the cylindrical portion in the axial direction,
A processing device in which the fifth processing means pushes the bottom wall of the cylindrical portion in the axial direction toward the first processing means against the force of the first processing means pushing the bottom wall of the cylindrical portion. 2. The processing apparatus according to claim 1 , wherein the force with which said fifth processing means presses said bottom wall corresponds to the force with which said first processing means presses said bottom wall. 3. The value of the force for pressing the bottom wall by the first processing means and the value for the force for pressing the bottom wall by the fifth processing means are values within a preset range. The processing device according to . An annular flange extending in the circumferential direction of the cylindrical portion is formed on the outer periphery of one end of the cylindrical portion, and the flange is bent at one end of the cylindrical portion toward the other end of the cylindrical portion. A processing method for processing a workpiece in which the other end of the cylindrical portion located on the back side of the portion is closed with a bottom wall,
inserting the cylindrical portion into a circular insertion hole having an inner peripheral diameter equivalent to the outer peripheral diameter of the cylindrical portion;
bringing only the end portion of the collar portion of the workpiece, in which the cylindrical portion is inserted through the insertion hole, into contact with the peripheral wall of the insertion hole;
The bottom wall of the cylindrical portion is pressed in the axial direction of the cylindrical portion by a first pressing means having a columnar shape inserted inside the cylindrical portion, and the one end of the cylindrical portion is pressed in the axial direction by the second pressing means. ,
The first pressing means is pushed through the front insertion hole by a third pressing means having a columnar shape which is inserted into the front insertion hole so as to face the first pressing means through the bottom wall of the cylindrical portion inserted through the insertion hole. A processing method in which the bottom wall of the cylindrical portion is pushed in the axial direction toward the first pressing means against the force that pushes the bottom wall of the cylindrical portion.

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