KR102025275B1 - Apparatus for processing laser apertures - Google Patents

Abstract

According to one embodiment, a device for processing a laser hole can comprise: a base; an object support part connected to the base and supporting the object; a guide rotatably connected to the base about a first axis; a lens support part rotatably connected to the guide about a second axis parallel to the first axis; and a reflective lens connected to the lens support part. Therefore, the present invention is capable of solving a processing interference phenomenon.

Description

Laser hole processing device {APPARATUS FOR PROCESSING LASER APERTURES}

The description below relates to a laser hole processing apparatus.

Gas turbines require high temperature inlet conditions for the turbine section for high thermal efficiency. Inlet temperature is gradually increasing to improve gas turbine performance. In order to solve the breakage of the components due to the thermal load in a high temperature environment, a cooling hole processing technology that lowers the surface temperature by processing a fine cooling hole on the surface has been applied to turbine components. For example, the blade may be provided with a plurality of cooling holes. Representative cooling hole processing method is a laser processing method.

As the shape of the component becomes more complex, the laser nozzle and the component may interfere, making it difficult to process the cooling holes in a desired position. 1 shows a blade 9 (hereinafter referred to as "object") which is a component provided in a gas turbine. Referring to FIG. 1, the object 9 may include a first part 91, a second part 92, and a third part 93 having different shapes. For example, the first part 91 may be an airfoil, the second part may be shroud, and the third part 93 may be a dovetail. The hole H may be provided in the first part 91 of the object 9. The hole H may act as a cooling hole. As shown in FIG. 1, it may be difficult to form the hole H in a desired position by interfering with the laser by the second part 92. This phenomenon is called processing interference phenomenon. In order to solve the machining interference, for example, the airfoil and the shroud are manufactured separately, and the hole (H) is machined in the airfoil and then bonded with the shroud. And there is a problem that increases the risk for defects.

An object of one embodiment is to provide a laser hole processing apparatus that can eliminate the processing interference phenomenon.

Laser hole processing apparatus according to an embodiment, the base; An object supporter connected to the base and supporting the object; A guide rotatably connected to the base about a first axis; A lens support rotatably connected to the guide about a second axis parallel to the first axis; And a reflective lens connected to the lens support part.

The lens support unit includes a lens arm connected to the guide; And a lens rotating part connecting the lens arm and the reflecting lens and rotating the reflecting lens about a third axis perpendicular to the second axis with respect to the lens arm.

The lens rotating part may include a first lens rotating part disposed on the lens arm; And a second lens rotation part rotatably connected to the first lens rotation part and supporting the reflective lens.

The lens arm is adjustable in length along the axial direction of the third axis.

The guide includes a guide arm rotatably connected to the base and adjustable in length; And a guide driver disposed on the guide arm and rotating the lens support with respect to the guide arm.

The guide may be rotatably connected to the base.

The object supporter may include a first support part connected to the base; A second support part supporting the object; And a support driver connecting the first support part and the second support part and rotating the second support part about a fourth axis perpendicular to the first axis with respect to the first support part.

The support may be rotatably connected to the base about the first axis.

Laser hole processing apparatus according to an embodiment, the base; Reflective lenses; An object supporter connected to the base and supporting the object; A guide rotatably connected to the base; And a lens support part including a lens arm connected to the guide and a lens rotation part disposed on the lens arm and rotating the reflective lens with respect to the lens arm.

The lens arm is adjustable in length.

The guide includes a guide arm extending from the base and adjustable in length; And a guide driver configured to adjust an angle formed by the guide arm and the lens support part.

The guide may be rotatably connected to the base.

The support portion may include: a first support part rotatably connected to the base; A second support part supporting the object; And a support driver connecting the first support part and the second support part and rotating the second support part with respect to the first support part.

The lens arm may be rotatably connected to the base.

According to the laser hole processing apparatus according to an embodiment, the laser hole may be formed in a desired position on the object having a complicated structure without processing interference phenomenon.

In addition, the laser hole processing apparatus according to an embodiment may form laser holes of various angles by moving the reflective lens in various paths or rotating in various directions.

The following drawings, which are attached to this specification, illustrate one preferred embodiment of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a front view schematically showing a processing interference phenomenon.
2 is a front view schematically showing a laser hole processing apparatus according to an embodiment.
3 is a flowchart schematically illustrating some operations of the laser hole processing apparatus according to an exemplary embodiment.
4 is a front view of an object in which a plurality of holes are formed by a laser hole processing apparatus according to an embodiment.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the embodiment, when it is determined that the detailed description of the related well-known configuration or function interferes with the understanding of the embodiment, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but between components It will be understood that may be "connected", "coupled" or "connected".

Components included in any one embodiment and components including common functions will be described using the same names in other embodiments. Unless stated to the contrary, the description in any one embodiment may be applied to other embodiments, and detailed descriptions thereof will be omitted in the overlapping range.

2 is a front view schematically showing a laser hole processing apparatus according to an embodiment, and FIG. 3 is a flowchart schematically showing some operations of the laser hole processing apparatus according to an embodiment.

2 and 3, the laser hole processing apparatus 1 may support the object 9 and form a hole H in the object 9 through a laser emitted from the laser module M. Referring to FIG. . The hole H may act as a cooling hole. The laser hole processing apparatus 1 can form the hole H in a desired position by reflecting the laser irradiated from the laser module M through the reflecting lens L. FIG. The laser hole processing apparatus 1 can form the hole H at a desired angle by moving or rotating the reflecting lens L even when the laser module M is fixed. In addition, the laser hole processing apparatus 1 can form the hole H in a desired position by rotating the object 9 itself. The laser hole processing apparatus 1 may include a base 11, an object support 12, a guide 13, a lens support 14, and a reflective lens L.

The object 9 may include a plurality of parts having different shapes. For example, the object 9 may include a first part 91, a second part 92, and a third part 93. For example, the object 9 may be a blade provided in the gas turbine, the first part 91 is an airfoil, the second part 92 is a shroud, and the third part 93 is a dovetail. Can be.

The base 11 may be fixed to the ground. The base 11 may rotatably support the object support 12 and the guide 13. The base 11 may rotate the object support 12 and the guide 13 simultaneously or independently about the first axis A1. For example, when the base 11 rotates the object support 12 and the guide 13 simultaneously, the angle between the object support 12 and the guide 13 may be maintained. Meanwhile, when the base 11 rotates the object support 12 and the guide 13 independently, the angle between the object support 12 and the guide 13 may be changed.

The object supporter 12 may be connected to the base 11 and support the object 9. For example, the object supporter 12 may support the third part 93 of the object 9. The object support 12 may be rotatable about the first axis A1 with respect to the base 11. The object support part 12 may include a first support part 121, a second support part 122, and a support driver 123.

The first support part 121 may be rotatably connected to the base 11. For example, the first support part 121 may be pivotally connected to the base 11. The first support part 121 is rotatable about the first axis A1.

The second support part 122 may support the object 9. For example, the second support part 122 may have a shape of engaging with the third part 93 of the object 9. For example, the third part 93 may include a plurality of recesses (not shown), and the second support part 122 may include a plurality of protrusions (not shown) inserted into the plurality of recesses. can do.

The support driver 123 may connect the first support part 121 and the second support part 122 to rotate the second support part 122 with respect to the first support part 121. According to such a structure, the object 9 can rotate about two degrees of freedom with respect to the base 11.

The guide 13 is connected to the base 11 and may support the lens support 14. The guide 13 may rotate the lens support 14. The guide 13 may rotate the lens support 14 about the second axis A2. The guide 13 may include a guide arm 131 and a guide driver 132.

The guide arm 131 may be rotatably connected to the base 11. The guide arm 131 rotates with respect to the base 11, and may control an angle formed by the reflective lens L with respect to the laser emitted from the laser module M. In addition, the guide arm 131 is adjustable in length. The guide arm 131 may adjust a distance from which the lens support 14 is spaced apart from the base 11. The guide arm 131 may control the position of the reflective lens L. For example, when the length of the guide arm 131 increases, the reflective lens L moves away from the base 11, and when the length of the guide arm 131 decreases, the reflective lens L It may be close to the base 11. For example, the guide arm 131 may include a first guide arm member 131a and a second guide arm member 131b slidable relative to each other. The guide arm member of any one of the first guide arm member 131a and the second guide arm member 131b is slidable along the inner wall or the outer wall of the other guide arm member.

The guide driver 132 may be disposed on the guide arm 131, and may rotate the lens support 14 with respect to the guide arm 131. For example, the guide driver 132 may rotate the lens support 14 about a second axis A2 parallel to the first axis A1. The guide driver 132 may control the angle of the reflective lens L. FIG. For example, the guide driver 132 may include a motor (not shown) for applying torque to the lens support 14.

The lens support 14 may be connected to the guide 13. For example, the lens support 14 may be connected to the guide 13 so as to be rotatable about the second axis A2. The lens support 14 may include a lens arm 141 and a lens rotating part 142.

The lens arm 141 is adjustable in length. When the length of the lens arm 141 increases, the reflecting lens L moves away from the guide 13, and when the length of the lens arm 141 decreases, the reflecting lens L approaches the guide 13. can do. For example, the lens arm 141 may include a first lens arm member 141a and a second lens arm member 141b that are slidably relative to each other. The lens arm member of any one of the first lens arm member 141a and the second lens arm member 141b is slidable along the inner wall or the outer wall of the other lens arm member.

The lens rotating part 142 connects the lens arm 141 and the reflecting lens L, and the third axis A3 perpendicular to the reflecting lens L with the second axis A2 with respect to the lens arm 141. ) Can be rotated around. The lens rotating unit 142 may control the angle of the reflecting lens (L). The reflective lens L may be angle-controlled in one direction according to the angle change between the guide 13 and the lens arm 141, and may be angle-controlled in the other direction by the lens rotating part 142. The lens rotating part 142 is a first lens rotating part 142a disposed on the lens arm 141 and a second lens rotatably connected to the first lens rotating part 142a and supporting the reflective lens L. It may include a rotating part (142b).

The reflective lens L may reflect the laser beam emitted from the laser module M to guide the object 9. The user controls the position and angle of the reflective lens L by controlling at least one or more of the object support 12, the guide 13, and the lens support 14 to control the position and angle of the hole H. Can be.

Hereinafter, the drive mechanism of the laser hole processing apparatus 1 is put together.

Each of the object support 12 and the guide 13 may be rotatably connected to the base 11 about the first axis A1.

The lens support 14 is rotatable about the guide 13 with respect to the second axis A2. For example, the second axis A2 may be parallel to the first axis A1. The angle θ between the lens support 14 and the guide 13 can be adjusted. Referring to FIG. 3, as the lens support 14 rotates about the guide 13, the angle between the lens support 14 and the guide 13 is changed from the first angle θ1 to the second angle θ2. Can increase.

The lens rotator 142 of the lens supporter 14 may rotate the reflective lens L about the third axis A3. For example, the third axis A3 may be orthogonal to the second axis A2.

The support driver 123 of the object supporter 12 may rotate the second support part 122 about the fourth axis A4 with respect to the first support part 121. For example, the fourth axis A4 may be orthogonal to the first axis A1. In other words, the support driver 123 may rotate the object 9 about the fourth axis A4.

4 is a front view of an object in which a plurality of holes are formed by a laser hole processing apparatus according to an embodiment.

Referring to FIG. 4, a plurality of holes H1, H2, and H3 may be formed along the circumference of the object 9. The laser hole processing apparatus 1 (refer to FIG. 2) can move the reflection lens L (refer to FIG. 2) to various positions, and rotate about various axes to form holes H 1, H 2, and H 3 at desired angles. have. The plurality of holes H1, H2, and H3 may be formed at different positions, and may be formed at different angles.

Although embodiments have been described with reference to the accompanying drawings as described above, various modifications and variations are possible to those skilled in the art from the above description. For example, the described techniques may be performed in a different order than the described method, and / or components of the described structure, apparatus, etc. may be combined or combined in a different form than the described method, or may be combined with other components or equivalents. Appropriate results can be achieved even if they are replaced or substituted.

Claims (14)

A laser hole processing apparatus for processing a laser hole in a blade including airfoils, shrouds, and dovetails having different shapes, in a manner that reflects a laser beam irradiated from the laser module.
Base;
An object supporter rotatably connected to the base and supporting the dovetail about a first axis parallel to a bottom surface of the base;
A guide rotatably connected to the base about the first axis;
A lens support rotatably connected to the guide about a second axis parallel to the first axis; And
A reflection lens connected to the lens support and reflecting a laser beam emitted from the laser module toward the airfoil;
The lens support portion,
A lens arm connected to the guide; And
A lens rotating part connecting the lens arm and the reflecting lens and rotating the reflecting lens about a third axis orthogonal to the second axis with respect to the lens arm;
The object support unit,
A first support part connected to the base;
A second support part having a shape engaged with the dovetail and supporting the dovetail; And
A support driver connecting the first support part and the second support part and rotating the second support part about a fourth axis orthogonal to the first axis with respect to the first support part,
The width of the shroud in the direction perpendicular to the fourth axis is greater than the width of the airfoil in the direction perpendicular to the fourth axis,
The reflective lens is located on the opposite side of the dovetail with respect to the shroud,
The object support and the guide may be rotated simultaneously or independently about the first axis,
When the object support and the guide are rotated at the same time, the angle between the object support and the guide is maintained,
When the object support and the guide is rotated independently, the angle between the object support and the guide can be changed.
delete The method of claim 1,
The lens rotating unit,
A first lens rotating part disposed on the lens arm; And
And a second lens rotating part rotatably connected to the first lens rotating part and supporting the reflective lens.
The method of claim 1,
And said lens arm is adjustable in length along the axial direction of said third axis.
The method of claim 1,
The guide,
A guide arm rotatably connected to the base and adjustable in length; And
And a guide driver disposed on the guide arm and rotating the lens support with respect to the guide arm.
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