JPH01266985A - Adjusting device for nozzle core - Google Patents

Abstract

PURPOSE:To facilitate an adjusting work and to adjust with good accuracy by abutting an adjusting screw to the smooth face provided on a lens receiver and screwing a nozzle holder by a fastening screw from the lower part to the lens receiver. CONSTITUTION:For adjusting the beam center stopped by a lens 1 and the hole of the tip of a nozzle chip 6 a nozzle holder 5 is vertically adjusted by fastening the fastening screw 9 of the nozzle holder 5, thereafter, an adjusting screw 8 is fixed by abutting to the smooth face 2a of a lens receiver 2. The nozzle holder 5 may not be turned, so the position thereof is not slipped and the alignment adjusting work can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an adjustment device for aligning the center of a beam of a laser processing machine with the center of a nozzle tip.

[Conventional technology]

3 and 4 show a conventional device of this type, in which 1 is a lens, 2 is a lens holder, 3 is a lens holder, 4 is a holder that supports the entire processing head, 5 is a nozzle holder, Reference numeral 6 denotes a nozzle chip, 7 a cap-shaped holder holder for pressing the nozzle holder 5, and 8 an adjustment screw which is screwed into this boulder holder and is fixed by coming into contact with the flat surface 5a of the nozzle holder 5.

Next, the operation will be explained. The laser beam focused by the lens 1 is irradiated onto the workpiece through the hole at the tip of the nozzle tip 6. At this time, in order to align the tip hole of the nozzle depth 6 with the center of the laser beam, turn the holder presser foot 7 to move it downwards -F, and then use the adjustment screw 8 to adjust the nozzle holder 5
It is something that suppresses and fixes.

[Problem to be solved by the invention]

Since the conventional nozzle center adjusting device is configured as described above, adjustment cannot be performed unless the holder presser 7 is rotated and loosened. Therefore, the smooth surface 5 that comes into contact with the screw 8 on the nozzle holder 5
Even if a is attached, the pushing position of the screw 8 may move and not align with the smooth surface, and in this case, it takes time to align the smooth surface 5a of the nozzle holder 5 with the adjustment screw 8 to align it with the beam center. There were problems such as the amount of time and effort required.

This invention was made to solve the above-mentioned problems, and the objective is to provide a nozzle center adjustment device that can save time and effort and can be easily adjusted.

[Means to solve the problem]

The nozzle center adjustment device according to the present invention integrates a conventional holder presser and a nozzle holder, and also makes an adjustment screw come into contact with a smooth surface provided on a lens holder, and tightens the nozzle holder to the lens holder from below using a screw. It is designed to be screwed on.

[Effect]

The nozzle center adjustment device according to the present invention facilitates adjustment by eliminating circumferential deviation between the adjustment screw and the smooth surface.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a lens, 2 is a lens holder having four smooth surfaces 2a on the outer periphery of the lower end, and 5
8 is a nozzle holder integrally provided with a collar portion 5a on the outer periphery;
numeral 9 is an adjustment screw which is attached to the collar portion 5a by side force, and numeral 9 is a screw for screwing the nozzle holder 5 onto the 1/2 inch receiver 2 from below. Note that the other configurations are the same as those of the conventional example, so explanations will be omitted.

Next, the operation will be explained. In the configuration shown below, 1) To adjust the center of the beam focused at 6/Z1 and the hole at the tip of the nozzle tip 6, tighten the nozzle holder 5 by loosening the screw 9 and tightening the nozzle holder 5. It is only necessary to adjust the adjustment screw 8 up and down and then fix it by abutting the adjustment screw 8 on the smooth surface 2a of the lens holder 2.Therefore, there is no need to turn the nozzle holder 5, so the centering adjustment work can be performed without changing the device. can be easily achieved.

〔Effect of the invention〕

According to this invention, the smooth surface that the adjustment screw presses and the adjustment screw are configured so that they do not shift in the circumferential direction.
This has the effect of making adjustment work easier and allowing for more accurate adjustment.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional side view of a nozzle center adjusting device according to an embodiment of the present invention, Fig. 2 is a cross-sectional view taken along line I-II of Fig. 1, and Fig. 3 is a cross-sectional view of a conventional nozzle center adjusting device. The sectional side view, FIG. 4, is a sectional view taken along the line IV--IV in FIG. 3. In the figure, "" means l/lens 2 means L-lens holder, 2a means smooth surface, 5 means nozzle holder, 5a means flange, 8 means adjustment screw,
9 is tightened with a screw. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] A smooth surface is formed on the outer periphery of the tip of the lens holder that holds the lens, and a nozzle holder having a flange on the outer periphery is screwed onto the tip surface of the lens holder from below with a tightening screw, and an adjustment screw is attached to the flange. A nozzle center adjusting device characterized in that the nozzle center adjusting device is screwed together from the side so that its tip comes into contact with the smooth surface of the lens holder.