JPS6310091A - Optical axis confirming device in laser beam machine - Google Patents

Abstract

PURPOSE:To facilitate the operation by providing the master sleeve which is rotatable with a co-axial line for a rotary sleeve and co-axially fixing the optical axis confirming case provided with a reflection mirror and gage to the master sleeve. CONSTITUTION:A master sleeve 10 is fitted via a master shaft 9 to a rotary sleeve 5 and made to enable the total rotation of 360 deg. on the co-axial line with the sleeve 5. The optical axis confirming case 11 provided with a reflection mirror 12, the gage for optical axis confirming and a window 14 is fixed to the sleeve 10. With this mechanism the deflection amount of the optical axis can be confirmed by rotating the optical axis confirming case 11 to the total rotation position of 360 deg. separately with the rotary sleeve 5. The decomposition work of the arm 6 for optical path becomes unnecessary, the operation for confirming the optical axis is simplified and facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an optical axis confirmation device lζ for a laser processing machine that processes a workpiece by cutting, welding, etc. using a laser lζ.

<Prior art> As shown in FIG. 2, a rotating sleeve 5 is attached to the pedestal 1 in order to guide the laser beam oscillated from the laser oscillator 2 installed on the pedestal 1 to the laser torch 4Iζ attached to the robot 31. An optical path arm 6 is connected to this rotating sleeve 5 at a right angle axis, and a mirror is formed through this optical path arm 6.

A laser beam that is more refracted and reflected is guided to the laser torch 41 through the rotating sleeve 5, the lζ optical path arm 6, and the optical path tube 7 on the robot side.

Incidentally, the optical axis of the laser beam guided by the laser torch is aligned with the optical path arm 6 at any angle of the rotating sleeve 5.
#This laser beam must enter straight and parallel,
There must be no wrinkles on the optical axis introduced into the rotating sleeve 51. Therefore, it is necessary to check the alignment of the optical axis. Conventionally, in order to check the position of the optical axis, a gauge fζ was inserted into the hole Alζ in the rotating sleeve 5 shown in FIG.
This was confirmed by checking whether the optical axis passed through the optical axis passage hole at the end of the day.

<Problems to be Solved by the Invention> As mentioned above, the optical axis must not deviate at any rotation angle of the rotating sleeve, so check for optical axis deflection at the full rotation (360) position of the rotating sleeve. Requires confirmation.

However, with conventional confirmation means, since the rotating sleeve is fixed to the optical path arm, it is not possible to confirm changes in the optical axis at all rotation positions, and it is necessary to The troublesome work of removing the arm was required. In addition, by disassembling the optical path arm, it is necessary to readjust the optical axis of the optical path system, and there is a problem in that it takes a considerable amount of time to readjust the angles of the mirrors at many locations.

Means for Solving the Problems> In order to solve the above conventional problems, the present invention provides a rotating sleeve on the mount of the laser oscillator, and rotates the optical path arm of the rotating sleeve in the perpendicular axial direction. In the laser processing machine lζ, the laser beam oscillated from the laser oscillator on the pedestal is refracted and reflected by a mirror and guided through the laser torch Iζ attached to the robot lζ through the rotating sleeve array l and the optical path arm. The rotary sleeve Cζ master sleeve is rotatably mounted coaxially with the rotation axis of the rotary sleeve, and there is a fζ reflection mirror on the bottom, a gauge to check the optical axis reflected by this reflection mirror, and an opening window to visually check this gauge from the outside. An optical axis confirmation case having an optical axis confirmation case is fixed to the master sleeve with a coaxial line.

Function> In the present invention having the above configuration, the master sleeve is rotated by rotating the master sleeve.
By coaxially rotating the beam fζ, the optical axis can be confirmed from the full rotational position l through the opening window of the optical axis confirmation case.

<Example> Hereinafter, an example of the present invention will be described based on FIG. 1. Reference numeral 5 designates a rotary sleeve, which is not shown in FIG. 1, but is rotatably attached to the mount 1#ζ via a cylindrical center shaft 81ζ bearing, as shown in FIG. 3. Reference numeral 6 denotes an optical path arm connected in an axial direction perpendicular to the rotating sleeve 5I.

In the present invention, a cylindrical mask shaft 9 rotatably held by a master sleeve 10 via a bearing communicates with the hole A of the center shaft 8 and is detachably connected to the rotating sleeve 51ζ. The master sleeve 10, which is connected to the rotary sleeve 5 through the master shaft 9, makes a full 360 rotations concentrically with the rotation axis of the rotary sleeve 5.

An optical axis confirmation case 11 is fixed to this mass/scalpel 11-bu 101 by a coaxial line. This optical axis confirmation case 11 is
A reflecting mirror 12 is installed on the bottom surface of the reflecting mirror I2, and a gauge 13 for confirming the optical axis of the reflected optical axis L2 of the laser optical axis L1 from the oscillator incident on the reflecting mirror I2 is installed. An opening window 14 for visual recognition is provided. When the laser optical axis L1i from the oscillator does not deflect, the gauge 13 reflects the reflected optical axis L due to the reflecting mirror 121.
A small hole 13α is formed through which the 2 passes.

Since the present invention has the above-mentioned configuration, when checking with this forward axis checking device, the mirror 15 attached to the right angle part of the connecting portion between the rotary sleeve 5 and the optical path arm 6 shown in FIG. Remove the mirror block 16 holding the mirror block 16, and attach the optical axis confirmation case 11, master sleeve, and block 10 to the mounting surface of the mirror block 16, that is, the rotating sleeve 5.
The integrated structure is fixed via the mask shaft 9. As a result, the optical axis confirmation case 11 rotates concentrically with the rotating sleeve 5 separately from the rotating sleeve 5 via the master sleeve 10. Therefore, the optical axis confirmation case 11 is rotated completely, and the amount of deflection of the optical axis with respect to the rotational axis center of the rotating sleeve 5 is confirmed using the gauge 13 through the opening window 14. To check the amount of deflection of the optical axis, if the optical axis is correct, it will pass through the small hole 13α of the gauge 13, but if the optical axis is distorted, it will pass through the small hole 13α of the gauge 13 other than the small hole 1. come into contact with the surface. Therefore, if there is a runout, gauge 13
While visually checking the angle, the mirror angle on the oscillator side is adjusted and the optical axis is corrected.

(Effects of the Invention) As described above, according to the present invention, since the rotating sleeve and the optical axis confirmation case are rotatably connected concentrically to the rotating sleeve via the master sleeve, the optical axis confirmation case is
(In this case, there is no need to disassemble the optical path arm from the rotating sleeve.Also, even if the optical path arm is fixed to the rotating sleeve, the optical axis confirmation case can rotate relative to the rotating sleeve. This has the effect of making it possible to confirm the optical axis at all rotational positions without having to rotate the optical axis.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the apparatus of the present invention, FIG. 2 is an overall front view of the laser processing machine, and FIG. 3 is a sectional view of the conventional structure taken in the direction of arrow 1 in FIG. 1... Frame, 2. Fist/laser oscillator, 3... Robot, 4. e. Laser torch, 5... Rotating sleeve, 6
...-Optical path arm, 9...Φ master shaft, 10.
・Master sleeve, 11... Optical axis confirmation case, 12
... Reflection mirror, 13. Life gauge, 14. Opening window. Patent applicant: 1 person other than Toyota Machinery Co., Ltd.

Claims (1)

[Claims] A rotating sleeve is provided on the mount of the laser oscillator, and an optical path arm is coupled to this rotating sleeve in a perpendicular axial direction, and the laser beam oscillated from the laser oscillator on the mount is refracted and reflected by a mirror to connect the rotating sleeve and the optical path arm. In a laser processing machine that guides light to a laser torch attached to a robot through the interior of the robot, a master sleeve is attached to the rotating sleeve so as to be rotatable coaxially with the rotation axis of the rotating sleeve, and a reflecting mirror is provided on the bottom surface of the rotating sleeve. An optical axis confirmation device for a laser processing machine, characterized in that an optical axis confirmation case including a gauge for confirming reflected light rays and an opening window for visually confirming the gauge from the outside is fixed to the master sleeve with a coaxial line.