Laser processing head moving device

Abstract

To provide a laser processing head movement device having a positioning mechanism which can cope with a change of an environmental temperature, irregular vibrations, acceleration which is not expected, and severe precision requirement and the like.SOLUTION: A laser processing head movement device 1 has: a mechanism for moving a laser processing head which has a mechanism for processing a workpiece by laser radiation, along three axes which are, an X axis, Y axis and Z axis, these axes being orthogonal each other, the laser processing head movement device comprises: an X axis core module 100 having, an X axis trunk part and an X axis arm part coupled to the X axis trunk part; a Y axis core module 200 having, a Y axis trunk part, and a Y axis bending part bending from both sides of the Y axis trunk part, and having an X axis bearing center rail for guiding the X axis trunk part of the X axis core module 100 to the Y axis trunk part; and a Z axis elevator module 300 having, a Z axis trunk part, and an X axis fixing bracket guided to the X axis arm part of the X axis core module 100.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a laser processing head moving device, and more particularly to a laser processing head moving device having environmental resistance. [Background technology]

[0002] One form of equipment that uses a laser beam for processing is one in which a laser head is controlled from above and a laser is irradiated onto a workpiece placed on a workbench. For example, the laser cutting machine disclosed in Patent Document 1 comprises a pair of portals and a central beam connecting them, the central beam holds a cross beam, and the cross beam supports a laser cutting head, which moves along the longitudinal direction of the central beam and the guide direction of the cross beam that is perpendicular to the longitudinal direction of the central beam.

[0003] In addition, in recent years, the performance of lasers has been improving, and in particular, the reduction in the laser focal diameter has led to a relative improvement in the accuracy of workpiece positioning. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-25315 Summary of the Invention [Problem to be solved by the invention]

[0005] When considering increasing the size and precision of equipment in which the head is integrated with the base, a suitable installation environment is required, such as increasing the size and rigidity of the base. Even as laser performance continues to improve, improving the equipment environment is not easy, and conventional laser processing equipment may not be able to meet user demands. It is necessary to meet a wide range of logistical requirements for the target workpiece, production volume, operating hours, and other equipment capabilities. Furthermore, if you want to improve only the laser head, replacing the base would require extensive modifications.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a laser processing head moving device equipped with a positioning mechanism that can withstand environmental temperature changes, irregular vibrations, unexpected acceleration, and various user requirements. [Means for solving the problem]

[0007] The laser processing head moving device of the present invention is intended to achieve the above-mentioned object, and the means of claim 1 is a laser processing head moving device having a mechanism for moving a laser processing head having a mechanism for processing a workpiece by laser irradiation along three orthogonal axes of an X-axis, a Y-axis, and a Z-axis, comprising: an X-axis body; The X-axis arm is provided with a tip end of the X-axis body and a middle part of the bottom surface of the X-axis arm. the Y-axis core module including an X-axis core module, a Y-axis body portion, and Y-axis bending portions bent from both ends of the Y-axis body portion, the Y-axis body portion having an X-bearing center rail that guides the X-axis body portion of the X-axis core module; a Z-axis elevator module including a Z-axis body portion and an X-axis fixed bracket guided by the X-axis arm portion of the X-axis core module; a Y-axis movement mechanism that slides the X-axis body portion of the X-axis core module along the X-bearing center rail; an X-axis movement mechanism that slides the X-axis fixed bracket of the Z-axis elevator module along the X-axis arm portion; and a Z-axis movement mechanism that slides the Z-axis body portion while the X-axis fixed bracket of the Z-axis elevator module is held by the X-axis arm portion and the Z-axis body portion is held by the claw portions of the X-axis fixed bracket.

[0008] Furthermore, the means of claim 2 is characterized in that the X-axis body and the X-axis arm of the X-axis core module, the Y-axis body and the Y-axis bending portion of the Y-axis core module, and the Z-axis body and the X-axis fixing bracket of the Z-axis elevator module are each integrally molded from cast iron. [Effects of the Invention]

[0009] The laser processing head moving device of the present invention uses a cast iron one-piece molded module to configure the positional relationship between the X, Y, and Z axes, making the entire device simple, thin, and lightweight, thereby reducing the mass of the moving body and eliminating deflection and distortion due to stress that could be a source of error. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a top perspective view of the entire laser processing head moving device of the present invention; [Figure 2] 1 is a bottom perspective view of the entire laser processing head moving device of the present invention. FIG. [Figure 3] FIG. 2 is a perspective view of an X-axis core module of the laser processing head moving device of the present invention. [Figure 4] FIG. 2 is a perspective view of a Y-axis core module of the laser processing head moving device of the present invention. [Figure 5] FIG. 2 is a perspective view of a Z-axis elevator module of the laser processing head moving device of the present invention. [Figure 6] 1 is a perspective view showing a first example of use in which the laser processing head moving device of the present invention is installed. FIG. [Figure 7] FIG. 10 is a perspective view showing a second example of use in which the laser processing head moving device of the present invention is installed. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. [Example]

[0012] Fig. 1 is an overall top perspective view of the laser processing head moving device 1 of the present invention. Fig. 2 is an overall bottom perspective view of the laser processing head moving device 1 of the present invention. The laser processing head moving device 1 is broadly divided into an X-axis core module 100, a Y-axis core module 200, and a Z-axis elevator module 300, and is a module that is attached as a whole to processing equipment for use.

[0013] 3 is a perspective view of the X-axis core module 100 of the laser processing head moving device 1. The X-axis core module 100 has an overall T-shaped structure in a plan view, and includes an X-axis body section 110 having a substantially rectangular parallelepiped shape and an X-axis arm section 120 having a similarly substantially rectangular parallelepiped shape. One tip section 111 of the X-axis body section 110 is connected to an intermediate section 121a of a bottom section 121 of the X-axis arm section 120. Y bearings 122a and 122b are formed on the left and right side sections of the X-axis arm section 120. A Z bearing 124a is formed on the top section 123 of the X-axis arm section 120, extending toward the back section 124. A step 125 is provided on the back section 124 of the X-axis arm section 120, from an inner section 122a1 of the Y bearing 122a to an inner section 122b1 of the Y bearing 122b. In this embodiment, the longitudinal direction of the X-axis arm portion 120 is defined as the X-axis direction.

[0014] 4 is a perspective view of Y-axis core module 200 of laser processing head moving device 1. Y-axis core module 200 has an overall U-shaped structure in a plan view, and X-bearing side rails 211, 221 are provided on Y-axis bending sections 210, 220 at both ends. In addition, X-bearing center rail 231 is formed on Y-axis body section 230 of Y-axis core module 200. In this embodiment, the longitudinal direction of Y-axis bending sections 210, 220 is defined as the Y-axis direction. X-bearing center rail 231 guides X-axis body section 110 in the Y-axis direction, and X-bearing side rails 211, 221 guide X-axis arm section 120 in the Y-axis direction.

[0015] 5 is a perspective view of the Z-axis elevator module 300 of the laser processing head moving device 1. The Z-axis elevator module 300 comprises a substantially rectangular parallelepiped Z-axis body 310 and an X-axis fixed bracket 320 that is fitted with a Z-axis ball screw shaft 311 provided on the front part of the Z-axis body 310 and is provided so as to be slidable in the Z-axis direction. The X-axis fixed bracket 320 has claws (not shown) that hold the Z-axis body 310. In this embodiment, the longitudinal direction of the Z-axis body 310 is defined as the Z-axis direction. The X-axis arm 120 guides the X-axis fixed bracket 320 in the X-axis direction.

[0016] Z-axis elevator module 300 includes a Z-axis movement mechanism. Z-axis servo motor 330 attached to upper surface housing 314 of Z-axis elevator module 300 is used as a drive source to guide and slide Z-axis body 310 in the Z-axis direction while X-axis fixing bracket 320, which fits into Z bearing 124a of X-axis core module 100, is fixed in the Z-axis direction. Specifically, the Z-axis movement mechanism slides Z-axis body 310 while X-axis fixing bracket 320 of Z-axis elevator module 300 is held by X-axis arm 120 and Z-axis ball screw shaft 311 of Z-axis body 310 is held by a claw (not shown) of X-axis fixing bracket 320.

[0017] X-axis core module 100 is equipped with an X-axis movement mechanism. Z-axis elevator module 300 moves in the X-axis direction by sliding X-axis fixing bracket 320, which fits into Z bearing 124a of X-axis core module 100, in the X-axis direction from inner portion 122a1 of Y bearing 122a to inner portion 122b1 of Y bearing 122b, using an X-axis drive motor magnet (not shown) housed in an internal housing (not shown) of step 125 as a driving source. At this time, Z-axis body 310 and X-axis fixing bracket 320 of Z-axis elevator module 300 move together in the X-axis direction.

[0018] The Y-axis core module 200 is equipped with a Y-axis movement mechanism. The Z-axis elevator module 300 moves in the Y-axis direction by sliding the X-axis body 110 of the X-axis core module 100, which is fitted with the X-axis bearing center rail 231, inside the Y-axis body 230, using a Y-axis drive motor magnet (not shown) housed in an internal housing (not shown) of the Y-axis body 230 as a drive source. At this time, the Z-axis elevator module 300 moves in the Y-axis direction integrally with the X-axis core module 100. Furthermore, the X-axis body 110 and the X-axis arm 120 of the X-axis core module 100 move parallel to the XY plane consisting of the X and Y axes and along the Y-axis direction.

[0019] 6 is a perspective view showing an example of use in which the laser processing head moving device 1 is installed in a tower-type laser processing facility 500. The laser processing head moving device 1 is used by fixing the Y-axis core module 200 to the tower-type laser processing facility 500. A head mounting part 313 is provided on the bottom part 312 of the Z-axis elevator module 300 of the laser processing head moving device 1 in which the Y-axis core module 200 is fixed to the tower-type laser processing facility 500, and a laser processing head 400 is attached to the head mounting part 313. The laser processing head 400 has a mechanism for processing the workpiece by laser irradiation.

[0020] The X-axis drive motor magnet, the Y-axis drive motor magnet, and the Z-axis servo motor 330 are controlled by a control device (not shown). Under the control of the control device, the laser processing head moving device 1 can move the laser processing head 400 arbitrarily within a predetermined range in the X-axis, Y-axis, and Z-axis directions.

[0021] The tower-type laser processing equipment 500 in Figure 6 is one example of an example of how the laser processing head moving device 1 is used, and the laser processing head moving device 1 of the present invention can also be used in other laser processing equipment. Figure 7 is a perspective view showing an example of how the laser processing head moving device 1 is used, installed in a front-gate type laser processing equipment 600. The laser processing head moving device 1 of the present invention can be used in any environment as long as it is laser processing equipment that can fix the Y-axis core module 200.

[0022] The X-axis body 110 and X-axis arm 120 of the X-axis core module 100, and the Y-axis bending sections 210, 220 and Y-axis body 230 of the Y-axis core module 200 are preferably integrally molded from cast iron. The Z-axis body 310 of the Z-axis elevator module 300 is also preferably molded from cast iron. By making each module of the laser processing head moving device 1 simple, thin, and lightweight, the mass of the moving body can be reduced, and bending and distortion due to stress that could be a source of error can be eliminated.

[0023] Furthermore, the laser processing head moving device 1 of the present invention is modularized as a whole and has a built-in X-axis movement mechanism, Y-axis movement mechanism, and Z-axis movement mechanism. Therefore, various laser processing head moving devices 1 can be selectively installed and used in equipment within the scope of the present invention, and the laser processing head moving device 1 of the present invention can be installed regardless of the size or environment of the equipment. Furthermore, if the equipment has a large space above the floor, it can freely configure processing means such as workpiece movement, logistics, and jig installation.

[0024] The drive motors for each module can be configured in a variety of ways, not limited to the examples described above. The drive motors for each module are preferably linear-acting motors for the Z axis, such as Z-axis servo motor 330, for simplification and miniaturization, while linear slide motors for the X and Y axes are preferably linear and space-saving. The housings for the drive motors are preferably rectangular, such as welded cans or cast metal structures, to prevent distortion under stress. [Explanation of symbols]

[0025] 1...Laser processing head moving device. 100...X-axis core module, 110...X-axis body portion, 111...tip portion, 120...X-axis arm portion, 121...bottom portion, 121a...middle portion, 122a...Y bearing portion, 122a1...inner portion, 122b...Y bearing portion, 122b1...inner portion, 123...upper surface portion, 124...rear portion, 124a...Z bearing portion, 125...step portion. 200...Y-axis core module, 210...Y-axis bending portion, 211...Y-bearing side rail, 220...Y-axis bending portion, 221...Y-bearing side rail, 230...Y-axis body portion, 231...X-bearing center rail. 300...Z-axis elevator module, 310...Z-axis body portion, 311...Z-axis ball screw shaft, 312...bottom portion, 313...head mounting portion, 314...upper surface housing portion, 320...X-axis fixing bracket, 330...Z-axis servo motor. 400...Laser processing head. 500...Tower-shaped laser processing equipment. 600...Front gate type laser processing equipment.

Claims

1. A laser processing head moving device has a mechanism for moving a laser processing head, which has a mechanism for processing a workpiece by laser irradiation, along three orthogonal axes, namely, an X-axis, a Y-axis, and a Z-axis, an X-axis core module including an X-axis body and an X-axis arm, wherein a tip end of the X-axis body is coupled to an intermediate portion of a bottom surface of the X-axis arm; a Y-axis core module including a Y-axis body portion and Y-axis bending portions bending from both ends of the Y-axis body portion, the Y-axis body portion including an X-bearing center rail for guiding the X-axis body portion of the X-axis core module; a Z-axis elevator module including a Z-axis body and an X-axis fixing bracket guided by the X-axis arm of the X-axis core module; a Y-axis moving mechanism that slides the X-axis body of the X-axis core module along an X-axis bearing center rail; an X-axis moving mechanism that slides the X-axis fixed bracket of the Z-axis elevator module along the X-axis arm; a Z-axis moving mechanism that slides the Z-axis body portion while the X-axis fixed bracket of the Z-axis elevator module is held by the X-axis arm portion and the Z-axis body portion is held by the claw portion of the X-axis fixed bracket.

2. 2. The laser processing head moving device according to claim 1, wherein the X-axis body and the X-axis arm of the X-axis core module, the Y-axis body and the Y-axis bending portion of the Y-axis core module, and the Z-axis body and the X-axis fixing bracket of the Z-axis elevator module are each integrally molded from cast iron.

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