JP2000084690A - Laser beam machining head with guide mechanism and driving mechanism incorporated - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser machining head which is stored in the same body as that of the Y axis carriage together with the X axis carriage, which is compactly designed to save space, and which is unified with a guide mechanism and a driving mechanism enabling the speeding-up. SOLUTION: The subject laser beam machining head is provided with an inner cylinder 1 equipped with a laser machining head 1a and an outer cylinder 2 that fits to the inner cylinder 1, this outer cylinder 2 is made freely movable horizontally by driving a ball screw 4 along a guide 3 in the Y axis direction; the inner cylinder 1 is used as a guiding unit for guiding a laser beam L, and the above machining head is provided with a driving mechanism K enabling the vertical movement of the inner cylinder 1 inside the outer cylinder 2, in a mechanism K where a guide mechanism G is provided which guides vertically the inner cylinder 1 along the Z axis while engaging the inner cylinder 1 with the inside face of the outer cylinder Z to be fitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser processing head incorporating a guide mechanism and a driving mechanism in a laser processing machine.

[0002]

2. Description of the Related Art In the prior art, as shown in FIG. 2, a side portion of a Y-axis carriage 101 which is horizontally movable along the Y-axis along a Y-axis LM guide 105 by the action of a Y-axis driving ball screw 106. Are provided with a Z-axis LM guide 102 and a Z-axis driving ball screw 103, and a Z-axis carriage 104 extends laterally by engaging with the Z-axis LM guide 102 and can move up and down. It is customary to hang the processing nozzle downward.

[0003]

However, in the above-mentioned conventional example, the center of gravity of the laser processing head is too far from the driving mechanism because the processing head, the guide mechanism, the driving mechanism and the like are constructed in a so-called stacking system. In addition, there is a problem that high-speed driving is alienated by being in a so-called offset state, and compactness cannot be achieved.

[0004] The present invention has been made in view of the above-mentioned points.
An object of the present invention is to provide a laser processing head which is housed in the same body as a shaft carriage, is compactly integrated, saves space, and integrates a guide mechanism and a drive mechanism which enable high-speed operation.

[0005]

The present invention can solve the above-mentioned problems by providing the following constitution.

(1) An inner cylinder provided with a laser processing head and an outer cylinder fitted to the inner cylinder are provided. The outer cylinder is horizontally moved by driving a ball screw along a guide in the Y-axis direction. The inner cylinder portion is made of a dielectric material for guiding laser light, and a guide mechanism is provided along the Z-axis and engaged with the inner surface of the outer cylinder portion to be fitted, and guides the inner cylinder portion in the vertical direction. A laser processing head combining a guide mechanism and a drive mechanism, comprising a drive mechanism capable of moving up and down.

(2) The guide mechanism forms a spline shaft and a spline nut by cutting grooves or teeth longitudinally along the axial direction on the side surfaces of the outer cylindrical portion inner surface and the inner cylindrical portion outer surface which are fitted and in contact with each other. A laser processing head incorporating a guide mechanism and a drive mechanism according to the above (1), wherein the guide mechanism and the drive mechanism are combined with each other to form a Z-axis guide.

(3) The drive mechanism is provided with a square rod-shaped member having a rack with straight teeth (immediately) engraved on the back surface of the inner cylindrical portion, and is engaged with this rack to extend in the vertical direction along the Z axis. A laser processing head incorporating a guide mechanism and a drive mechanism according to the above item (1), wherein a pinion for vertically moving according to the guide mechanism is rotatably supported on the inner side of the outer cylindrical portion.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below.

FIG. 1A is a perspective view showing an essential part of an embodiment of a laser processing head in which a guide mechanism and a drive mechanism according to the present invention are combined, and FIG. FIG. 2 is a perspective explanatory view showing a configuration of a part, FIG. 2 is a perspective view showing a conventional configuration, and FIG. 3 is an external perspective view showing an example of a laser processing machine.

Referring to the drawings, reference numeral 1 denotes an inner cylindrical portion, which comprises a spline shaft and a laser processing head 1a, and an outer cylindrical portion 2 forming a spline nut and a Y-axis carriage is fitted to the inner cylindrical portion 1. A pinion 6 having a drive unit (not shown) disposed in the outer cylinder 2 forming the spline nut and Y-axis carriage is provided, and is provided on a side surface located on the back surface of the inner cylinder 1. The drive mechanism K is constituted by the rack 5a and the pinion 6 by meshing with the straight teeth (immediately) forming the rack 5a carved on the square bar member 5, and the guide mechanism G is formed by the spline shaft and the spline nut. ,
The inner cylinder part 1 composed of the spline shaft and the laser processing head 1a is vertically movable in the outer cylinder part 2 along the Z-axis in the vertical direction and according to the guide mechanism G, and further has a function as a Y-axis carriage. The outer cylinder portion 2 is configured to be movable on the Y axis along a guide (LM guide) by a driving action of a ball screw 4 while holding the inner cylinder portion 1.

Further, the inner cylindrical portion 1 composed of the spline shaft and the laser processing head 1a also serves as a derivative for guiding the laser light L.

As for other reference numerals, LM is a laser beam machine, C is a clamp, and W is a work.

The operation will be described based on the above configuration.

In the processing operation of the laser processing machine LM,
The workpiece W is gripped by the clamp C of the laser beam machine LM to perform the movement positioning on the X axis. The movement positioning on the Y axis is performed by the outer cylinder part 2 including a spline nut and a Y axis carriage. A guide that guides a laser beam L that can be moved horizontally by a driving action of a ball screw 4 along a guide (LM guide) 3 located on the back surface of the outer cylinder 2 and at the same time, fitted into a spline nut of the outer cylinder 2 and slidable up and down. And a laser processing head 1a is provided inside the outer cylinder 2 forming the spline nut and Y-axis carriage according to a guide mechanism G formed by a spline shaft and a spline nut. And a rack 5a composed of straight teeth (immediately) carved on a square bar-shaped member 5 attached to the back of the inner cylinder 1 and a pinion 6 rotated by a driving unit (not shown). The workpiece W moves up and down the Z-axis to
Processing positioning can be performed upward.

As described above, the guide mechanism G including the spline shaft and the spline nut as the Z-axis guide.
The laser processing head 1a and a derivative for guiding the laser beam L are combined with the inner cylinder 1 having a spline shaft, and the inner cylinder 1 forms a Z-axis carriage. The laser processing head 1a, the guide mechanism G, and the drive mechanism K can be compactly assembled by providing a drive mechanism K including a drive mechanism 5a and a pinion 6, and storing the drive mechanism K in an outer cylinder 2 serving as a Y-axis carriage. It is possible to save space and speed up as compared with.

[0017]

According to the present invention, the laser processing head is housed in the same body as the Y-axis carriage together with the Z-axis carriage, so that the laser processing head can be compacted, space-saving, and high-speed can be achieved.

[Brief description of the drawings]

FIG. 1 (a) is a perspective view showing a main part configuration of an embodiment of a laser processing head incorporating a guide mechanism and a drive mechanism according to the present invention, and FIG. 1 (b) shows a main part configuration of a guide mechanism and a drive mechanism. Perspective illustration

FIG. 2 is a perspective view showing a conventional configuration.

FIG. 3 is an external perspective view showing an example of a laser processing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner cylinder part (spline shaft and laser processing head) 1a Laser processing head 2 Outer cylinder part (spline nut and Y axis carriage) 3 Guide (LM guide) 4 Ball screw 5 Square rod member 5a Rack 6 Pinion G Guide mechanism (Z axis) Guide) K Drive mechanism L Laser beam C Clamp W Work

Claims (3)

[Claims] 1. An inner cylinder having a laser processing head,
It has an outer cylinder part fitted to this inner cylinder part, and makes this outer cylinder part horizontally movable by driving a ball screw along a guide in the Y-axis direction, and makes the inner cylinder part a derivative that guides laser light. A guide mechanism which is provided along the Z-axis and which engages with the inner surface of the outer cylinder portion to be fitted and guides in the vertical direction, and which can move up and down in the outer cylinder portion. And a laser processing head incorporating a drive mechanism. 2. A guide mechanism, wherein a spline shaft and a spline nut are formed by vertically cutting grooves or teeth along the axial direction on the side surfaces of the outer cylinder portion inner surface and the inner cylinder portion outer surface which are fitted and in contact with each other. The laser processing head according to claim 1, wherein the Z-axis guide is formed by meshing with the guide mechanism and the drive mechanism. 3. The driving mechanism further comprises a square rod-shaped member having a rack with straight teeth (immediately) formed on the rear surface of the inner cylinder portion, and engaged with the rack to extend in the vertical direction along the Z axis and the guide. 2. The laser processing head according to claim 1, wherein a pinion for vertically movable according to the mechanism is rotatably supported on the inner side of the outer cylinder portion.