KR101146516B1 - Shot peening device for tube and control method thereof - Google Patents

Abstract

Disclosed are a short peening device for a tube and a control method thereof. The disclosed shot peening apparatus for tubes includes: a moving portion including a main body portion to which shot balls are injected, a supply portion for conveying the tube to the main body portion, and a withdrawal portion for drawing out the short peening tube from the main body portion and a supply portion to the main body portion along the moving portion; It characterized in that it comprises a holding portion for pressing and turning both sides of the tube to be.

Description

Shot peening device for tubes and control method thereof {SHOT PEENING DEVICE FOR TUBE AND CONTROL METHOD THEREOF}

The present invention relates to a short pinning apparatus for a tube and a control method thereof, and more particularly, to a short pinning apparatus for a tube and a control method thereof which can improve productivity by automating the short pinning operation of the tube.

In general, shot peening is a kind of cold working in which a shot ball is projected on a surface of a metal object at high speed to hammer the surface of the metal object.

As the shot ball collides with the surface of the metal object at high speed, foreign substances including scales are removed, and irregularities are formed on the surface of the metal object.

The surface of the metal object has a force to maintain the stretched surface layer before it is stretched to generate residual compressive stress, and the inside of the metal object has a tensile stress.

When the compressive residual stress remains on the surface of the metal object material by the short peening, the fatigue life of the metal object is extended until the compressive residual stress gradually cancels and disappears due to the action of cyclic tension.

The shot peening operation is performed by hand, and after the operator puts the metal object including the tube into the short peening apparatus, the metal object is taken out and moved after a certain time.

The above technical configuration is a background art for helping understanding of the present invention, and does not mean a conventional technology well known in the art.

In the shot peening operation of the tube with the side opening, the shot ball flows into the inside of the tube, causing noise, and an additional work is required to remove it, thereby increasing the production cost.

In addition, since the short peening operation is performed while the tube is stopped, the quality of the tube is non-uniform and durability is degraded. Therefore, there is a need to improve this.

The present invention has been made by the necessity as described above, and an object thereof is to provide a shot peening device for a tube and a control method thereof, which can prevent the shot ball from flowing into the tube.

In addition, an object of the present invention is to provide a short pinning apparatus for a tube and a control method thereof, which can improve durability because the short pinning operation is performed while the tube is automatically rotated.

According to the present invention, a short peening device for a tube includes: a moving part and a moving part including a main body part to which the shot ball is injected, a supply part for transferring the tube to the main body part, and a withdrawal part for withdrawing the short peening tube from the main body part; It includes a holding portion for pressing and turning both sides of the tube supplied to the main body portion.

The gripping portion preferably includes a gripping arm portion for holding the tube, a rotating portion for rotating the gripping arm portion, and a horizontal moving portion for horizontally moving the rotating portion.

In addition, the gripping arm preferably includes a bracket member having a cushioning press for elastically supporting the tube in contact with both sides of the opening of the tube and a mounting groove for inserting the cushioning press.

In addition, the cushion pressing unit is preferably made of urethane.

In addition, the gripping arm portion, it is preferable to include a locking member protruding from the cushion pressing portion to be caught inside the tube.

In addition, the locking member is preferably formed in a cylindrical shape.

In addition, it is preferable to further include a sensor member for sensing the position of the member to be measured and the member to be rotated by the operation of the rotating unit.

In addition, the horizontal moving unit preferably includes a rod member connected to the rotating unit and a cylinder member for reciprocating the rod member.

In addition, the gripping portion, it is preferable to include a fine control unit installed in the lower side of the horizontal moving portion to adjust the position in which the horizontal moving portion is supported in the horizontal direction.

In addition, the fine adjustment portion, it is preferable to include a mounting member including an inner hole is fixed to the horizontal moving portion is formed with a female thread, and a rotation drive member for rotating the screw bar and the screw bar is formed with a male thread fastened to the inner hole.

The control method of the short pinning apparatus for a tube according to the present invention includes: a tube feeding step in which a tube is transferred to an inner side of a main body along a feeding part, a tube holding step in which a horizontal arm is operated to hold both sides of the tube; Rotating step to rotate the tube to rotate the tube, shot ball spraying step to spray the shot ball to the surface of the tube, rotation stop step to stop the rotation of the tube, the horizontal moving unit is operated so that the grip arm is separated from the tube It includes a tube unloading step and the tube withdrawal step that the tube is transported to the outside of the body portion along the withdrawal.

In addition, in the tube gripping step, after the gripping arm portion grips both sides of the tube, the supply portion is preferably lowered to move to the outside of the body portion.

In addition, in the tube holding step, both sides of the tube is preferably inserted into the cushion pressing portion to seal the inside of the tube.

In the shot peening apparatus for a tube and a control method thereof according to the present invention, when the shot peening operation, the cushion pressing unit elastically presses the open sides of the tube to prevent the shot ball from entering the inside of the tube, thus eliminating the shot ball elimination operation. The cost of production can be reduced.

In addition, in the present invention, since the short peening operation of the tube is automatically performed, the working time can be shortened to improve productivity.

In addition, according to the present invention, since the shot peening operation is performed while rotating the tube, the quality of the tube can be improved.

1 is a perspective view schematically showing a short peening device for a tube according to an embodiment of the present invention.
FIG. 2 is an enlarged perspective view of part 'A' shown in FIG. 1.
3 is a perspective view showing a gripper according to an embodiment of the present invention.
4 is an exploded perspective view showing a gripper according to an embodiment of the present invention.
5 is a perspective view schematically showing a state in which the gripping portion grips the tube according to an embodiment of the present invention.
6 is a front view schematically showing a state before the gripping portion grips the tube according to an embodiment of the present invention.
7 is a front view schematically showing a state in which the gripping portion is operated to grip the tube according to an embodiment of the present invention.
8 is a flowchart illustrating a method of controlling a shot peening device for a tube according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a tube shortening apparatus and a control method according to the present invention. For convenience of explanation, a tube having a circular tube shape will be described as an example. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view schematically showing a short pinning apparatus for a tube according to an embodiment of the present invention, Figure 2 is an enlarged perspective view of the portion 'A' shown in Figure 1, Figure 3 is a view of the present invention 4 is a perspective view illustrating a gripper according to an embodiment of the present invention, and FIG. 5 is a perspective view illustrating a gripper according to an embodiment of the present invention. 6 is a perspective view schematically illustrating a state before a gripper grips a tube according to an embodiment of the present invention, and FIG. 7 is a gripper operated according to an embodiment of the present invention. It is a front view which shows schematically the state of holding a tube.

As shown in FIGS. 1 to 7, the shot peening apparatus 1 for a tube according to an embodiment of the present invention includes a main body 10 and a main body 10 through which the shot ball 18 is injected. Along the moving part 20 and the moving part 20 including the supply part 30 which conveys the tube 5, and the withdrawal part 40 which draws out the short-finished tube 5 from the main body part 10. And a holding part 50 which presses and rotates both sides of the tube 5 supplied to the main body part 10.

The tube 5 short-pinned by the main body 10 will be described taking a circular tube with both sides opened as an example. Tube according to another embodiment of the present invention can be used a tube of various shapes, including a torsion beam-shaped corner tube.

The main body 10 is provided with a device for spraying the shot ball 18 on the inside, the main body door 12 is provided on both sides (right and left side of Fig. 1) of the main body 10.

The main body door 12 is moved up and down by the driving of the door cylinder 16, and opens and closes the inlet and the outlet of the main body part 10.

The door cylinder 16 for moving the body door 12 up and down is fixed to the support frame 17 fixed to the body part 10.

Since the auxiliary door 14 is installed on the side of the main body 10, when an abnormality occurs in the main body 10, the operator can open the auxiliary door 14 and perform maintenance work.

The moving part 20 includes the supply part 30 which supplies the tube 5 to the main body part 10, and the withdrawal part 40 which moves the tube 5 outward from the main body part 10. As shown in FIG.

The supply unit 30 includes a first fixed frame 36 which is fixedly installed, and a first moving frame 32 which moves inside the first fixed frame 36 and the main body unit 10.

First mounting jigs 34 supporting both sides of the tube 5 are installed at both sides of the first moving frame 32. The first moving frame 32 is moved to the inside of the main body 10 from the first fixed frame 36, the first moving frame 32 or the second moving frame 42 inside the main body 10 Lifting section (not shown) is provided to raise and lower the.

In order to mount the plurality of tubes 5 to the first moving frame 32, a plurality of first mounting jigs 34 are provided on both sides of the first moving frame 32.

The lead-out part 40 which draws out the tube 5 from the main body 10 moves the inside of the second fixed frame 46 and the second fixed frame 46 and the main body 10 fixedly installed. A second moving frame 42 is included.

The second moving frame 42 is provided with a second mounting jig 44 on which the tube 5 is mounted, and the second moving frame 42 is moved to the main body 10 to complete the shot peening tube 5. Received and transferred to the outside.

The gripping portion 50 which is turned while holding both sides of the tube 5 transferred to the main body portion 10 has a gripping arm portion 60 for gripping the tube 5 and a rotating portion for rotating the gripping arm portion 60. 70 and a horizontal moving part 90 for horizontally moving the rotating part 70 (hereinafter referred to in FIG. 4) and a horizontal moving part 90 provided below the horizontal moving part 90 and supporting the horizontal moving part 90 in a horizontal direction. It includes a fine control unit 100 to adjust to.

The grip arm 60 elastically supports the open sides of the tube 5 to prevent the shot ball 18 from flowing into the tube 5.

The gripping arm 60 according to the embodiment is in contact with both sides of the opening of the tube 5, the cushion pressing portion 62 for elastically supporting the tube 5 and the mounting groove portion 66 is inserted into the cushion pressing portion 62 is inserted. It includes a bracket member 68 having a).

The cushion pressing part 62 is made of urethane (Urethane) having excellent abrasion resistance, oxidation resistance and maintenance resistance.

When the cushion pressing portion 62 is pressed to both opened sides of the tube 5, both ends of the tube 5 are inserted into the cushion pressing portion 62 to be elastically supported.

Since the cushion pressing portion 62 elastically deformed according to the shape of both ends of the tube 5 surrounds both ends of the tube 5, the inside of the tube 5 is sealed to prevent the inflow of the short ball 18. do.

Since the cushion pressing part 62 is elastically deformed to support both sides of the tube 5, the tube 5 having various diameters and shapes is also supported inside the main body part 10 by the operation of the grip part 50.

In addition, since the locking member 64 protruding from the cushion pressing portion 62 is caught inside the tube 5, the falling of the tube 5 is prevented. The locking member 64 is formed to protrude outward from the center of the cushion pressing portion 62, and may be formed in various shapes including a cylindrical shape in a technical concept of minimizing friction with the tube 5.

The cushion pressing unit 62 is coupled to the bracket member 68 having the mounting groove 66, and the bracket member 68 is connected to the rotating unit 70 to receive rotational power.

The rotation part 70 includes a transmission part 74 connected to the bracket member 68, a driving motor member 72 and a transmission part 74 and a driving motor member connected to the transmission part 74 and supplying rotational power. And a base member 75 for supporting 72.

The drive motor member 72 is operated with a control signal to rotate and stop the gripping arm 60, and various rotating devices can be used within the technical concept of having quick response.

The drive motor member 72 according to one embodiment uses a servo motor having a range of fast response and wide speed control.

In order to sense the directionality of the tube 5 held by the gripping arm 60, the sensor member for sensing the position of the member to be measured 77 and the member 77 to be rotated by the operation of the drive motor member 72. 78 is installed.

The member to be measured 77 is installed in a protruding shape on a plate that is rotated in conjunction with the operation of the driving motor member 72.

The sensor member 78 for measuring the member under measurement 77 is a proximity sensor installed in the sensor bracket 79 having a long hole, and sensing is performed when the member 77 under measurement passes the sensor member 78. .

The horizontal moving part 90 for horizontally moving the grip arm 60 and the rotating part 70 includes a rod member 94 connected to the rotating part 70 and a cylinder member 92 for reciprocating the rod member 94. Include.

One end of the rod member 94 is formed in a polygonal shape, and the mounting hole 82 is formed in a shape corresponding to one end of the rod member 94 also inside the connection member 80 coupled thereto.

The rod member 94 is moved by the operation of the cylinder member 92, and the connection member 80 fixed to the rod member 94 is fixed to the lower side of the base member 75.

The cylinder member 92 is fixed to the moving body portion 96, and the first rail member 98 for guiding the movement of the rotating part 70 is provided on the upper side of the moving body portion 96 facing the base member 75. Is installed.

Since the base member 75 is provided with a first holder portion 76 surrounding the first rail member 98, the rotation part 70 is moved in the horizontal direction along the first rail member 98.

The fine control unit 100 for adjusting the support position of the horizontal moving unit 90 is installed below the horizontal moving unit 90.

The micro-adjustment unit 100 according to the embodiment includes a mounting member 107 including an inner hole 108 fixed to the horizontal moving unit 90 and formed with a female thread, and a male screw fastened to the inner hole 108. It includes a screw bar 104 and a rotating driving member 102 for rotating the screw bar 104 is formed.

The rotary drive member 102 is fixed to one side of the fixed body portion 106 fixed to the main body portion 10, the screw bar 104 is connected to the rotary drive member 102 to receive power is fixed body portion ( 106).

The mounting member 107 to which the inner hole 108 is connected to the screw bar 104 is fixed to the lower side of the moving body portion 96 to constrain the rotation.

A second rail member 109 is provided on the upper side of the fixed body part 106, and a second holder part 99 surrounding the second rail member 109 is provided below the moving body part 96.

Hereinafter, with reference to the accompanying drawings will be described in detail the control method of the shot peening device 1 for a tube according to an embodiment of the present invention.

8 is a flowchart illustrating a method of controlling a shot peening device for a tube according to an embodiment of the present invention.

As shown in Figures 1 to 8, the control method of the short pinning apparatus 1 for a tube according to an embodiment of the present invention, the fine adjustment unit 100 is operated to support the horizontal moving unit 90 Has a support position adjusting step to adjust the position. (S10)

Before the gripping portion 50 grips the tube 5, the distance between the gripping arm portions 60 facing along the length of the tube 5 is adjusted.

To this end, when the rotation driving member 102 is rotated to rotate the screw bar 104, the mounting member 107 is moved along the screw bar 104, the horizontal moving portion 90 also the second rail member 109 Is moved along.

When the interval between the gripping arm 60 is adjusted according to the tube 5, the rotation of the rotary drive member 102 is stopped to set the position where the horizontal moving unit 90 is supported.

When the support position adjustment step is completed, the tube (5) has a tube supply step to be transferred to the inner side of the body portion 10 along the supply unit 30. (S20)

The tube 5 moves to the inside of the main body 10 together with the first moving frame 32 in a state where it is mounted on the first mounting jig 34 of the supply part 30.

When the tube supplying step is completed, the horizontal moving unit 90 is operated to have a gripping arm 60 holding the both sides of the tube (5) (S30).

When the movement of the first moving frame 32 to the inside of the main body 10 is completed, the cylinder member 92 is operated to advance the rod member 94.

As the rod member 94 is advanced, the connecting member 80, the rotating unit 70, and the grip arm unit 60 are also advanced, and the cushion pressing unit 62 of the grip arm unit 60 presses both sides of the tube 5. .

Since both sides of the tube 5 are inserted into the cushion pressing portion 62, the inside of the tube 5 is sealed to prevent the short ball 18 from flowing in.

After the grip arm 60 grips both sides of the tube 5, the supply unit 30 descends to move to the outside of the main body 10, and the door cylinder 16 operates to lower the main door 12. do.

The tube 5 having various diameters or shapes may be supported by the grip arm 60 by elastic support of the cushion pressing unit 62.

In addition, the tube 5 having various lengths may be supported by the grip arm 60 because the position of the horizontal moving unit 90 and the grip arm 60 is changed by the operation of the microadjustment unit 100.

When the tube gripping step is completed, it has a sensing step of measuring the mounting direction of the tube (5) (S40).

Since the sensor member 78 senses the position of the member 77 to be measured, the orientation of the tube 5 mounted to the gripping arm 60 can be known.

When the sensing step is completed, the rotating unit 70 is operated to have a rotating step of rotating the tube (5) (S50).

The rotational power generated by the operation of the drive motor member 72 is transmitted to the gripping arm 60 through the transmission 74. The tube 5 also rotates by the rotation of the gripping arm 60 holding both sides of the tube 5.

The shot ball spraying step of spraying the shot ball 18 to the surface of the tube (5) (S60).

The apparatus for injecting the shot ball 18 inside the main body 10 is operated to inject the shot ball 18 to the outside of the tube (5).

Since the tube 5 is rotated in the main body 10, the shot ball 18 is uniformly sprayed on the outside of the tube 5.

The injection of the shot ball 18 and the rotation of the tube 5 may be performed at the same time, and various modifications are possible, such as the shot ball 18 may be injected and the tube 5 may be rotated.

And a rotation stop step of stopping the rotation of the tube 5 in the mounting direction of the tube 5 measured in the sensing step.

For example, when the tube 5 is mounted on the gripping arm 60, if the position of the member to be measured 77 is directed upward (refer to Fig. 4), when the rotation of the tube 5 is stopped, blood The drive motor member 72 is stopped so that the position of the measuring member 77 faces upward.

As a result, when the tube 5 having the welding line or the tube 5 formed in the torsion beam shape is moved, the tube 5 is moved in a directional manner to facilitate the movement and sorting of the tube 5. can do.

When the rotation stop step is completed, the horizontal moving unit 90 is operated to have a tube unloading step in which the gripping arm unit 60 is spaced apart from the tube 5 (S80).

When the rod member 94 moves backward (right of FIG. 4) by the operation of the cylinder member 92, the rotating unit 70 moves backward along the first rail member 98.

Since the holding arm part 60 which cooperates with the rotating part 70 is also spaced apart from both sides of the tube 5, the tube 5 is the 2nd mounting jig | tool of the 2nd moving frame 42 moved to the inside of the main-body part 10. FIG. Is put at 44.

When the tube unloading step is completed, the tube 5 has a tube withdrawal step that is transported to the outside of the body portion 10 along the lead portion 40. (S90)

The second moving frame 42 moves from the inner side of the main body 10 to the outer side of the main body 10 in the state in which the tube 5 is raised, and transfers the tube 5 where the shot peening is completed to the outer side of the main body 10.

According to the above configuration, the short peening apparatus 1 for a tube and the control method thereof according to an embodiment of the present invention resiliently pressurize both sides of the opening of the tube 5 by the cushion pressing unit 62 during the short peening operation. Since the shot ball 18 is prevented from entering the tube 5, the operation of removing the shot ball 18 can be omitted, thereby reducing the production cost. In addition, since the short peening operation of the tube 5 is automatically performed, the working time can be shortened to improve productivity. Since the short peening operation is performed while rotating the tube 5, the quality of the tube 5 is improved. You can.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

In addition, although a tube of a circular tube shape has been described as an example, this is merely exemplary, and in addition to a tube of a circular tube shape, various types of tubes, such as a tube having one or both sides, such as a torsion beam-shaped tube, and a tube without both sides, may be used. In the shot peening operation, the shot peening apparatus for a tube of the present invention and a control method thereof can be used.

Therefore, the true technical protection scope of the present invention will be defined by the claims.

1: Short peening device for tube 5: Tube
10: main body 18: short ball
20: moving part 30: supply part
32: first moving frame 34: first mounting jig
40: withdrawal part 42: second moving frame
44: 2nd mounting jig 50: Holding part
60: grip arm 62: cushion pressing portion
64: locking member 68: bracket member
70: rotation part 72: drive motor member
74: transmission portion 75: base member
76: first holder portion 77: member to be measured
78: sensor member 79: sensor bracket
80: connecting member 82: mounting hole
90: horizontal moving part 92: cylinder member
94: rod member 96: moving body portion
98: first rail member 99: second holder portion
100: fine adjustment unit 102: rotary drive member
104: screw bar 106: fixed body portion
107: mounting member 108: inner hole
109: second rail member

Claims (13)

Body part to which the shot ball is injected;
A moving part including a supply part for transferring the tube to the main body part, and a withdrawal part for taking out the tube in which the shot peening is completed from the main body part; And
Comprising a holding portion for pressing and turning both sides of the tube supplied to the main body portion along the moving portion,
The gripping portion, a gripping arm portion for holding the tube;
A rotating part for rotating the gripping arm part; And
It includes a horizontal moving unit for horizontally moving the rotating unit,
The gripping arm unit may be in contact with both sides of the opening of the tube cushioning unit for elastically supporting the tube; And
And a bracket member having a mounting groove into which the cushion pressing part is inserted.
delete delete The method of claim 1,
Short cushioning device for a tube, characterized in that the cushion pressing portion made of urethane.
The method of claim 1, wherein the gripping arm portion,
Short pinning device for a tube, characterized in that it comprises a locking member protruding from the cushion pressing portion is caught inside the tube.
The method of claim 5, wherein
The fastening device for a tube, characterized in that the engaging member is formed in a cylindrical shape.
The method of claim 1,
A member to be rotated by the operation of the rotating unit; And
And a sensor member for sensing the position of the member under measurement.
The method of claim 1, wherein the horizontal moving unit,
A rod member connected to the rotating part; And
And a cylinder member for reciprocating the rod member.
The method according to any one of claims 1 and 4 to 8, wherein the gripping portion,
It is installed on the lower side of the horizontal moving portion, the shot peening device for a tube, characterized in that it comprises a fine control for adjusting the position in which the horizontal moving portion is supported in the horizontal direction.
The method of claim 9, wherein the micro-adjustment unit,
A fixing member fixed to the horizontal moving part and including an inner hole in which a female thread is formed;
A screw bar on which a male thread is formed which is fastened to the inner hole; And
Short pinning device for a tube, characterized in that it comprises a rotary drive member for rotating the screw bar.
A tube feeding step of feeding the tube into the main body along the supply part;
A tube gripping step in which a horizontal moving part is operated so that the gripping arm grips both sides of the tube;
A rotating step of rotating the tube by operating a rotating part;
A shot ball spraying step of spraying shot balls onto the surface of the tube;
A rotation stop step of stopping the rotation of the tube;
A tube unloading step of operating the horizontal moving part so that the gripping arm part is spaced apart from the tube; And
And a tube withdrawal step in which the tube is transported to the outside of the main body along the lead portion.
In the tube holding step,
And the gripping arm portion grips both sides of the tube, and then the supply portion descends to move to the outside of the main body portion.
delete The method of claim 11, wherein in the tube holding step,
Both sides of the tube is inserted into the cushion pressing portion for controlling the short peening device for a tube, characterized in that for sealing the inside of the tube.

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