JPS62107892A - Laser beam machine - Google Patents

Abstract

PURPOSE:To prevent a mirror for reflecting a laser beam, from being contaminated from an engaged part, by providing a shielding cylindrical part for shielding the engaged part together with a bevel gear, on a turning member supported by a supporting member, and a turning member to which a laser torch is installed, respectively. CONSTITUTION:In a laser beam machine in which the first turning member 24 is supported so as to be turnable around the first axis 02 by a supporting member 22 which is supported through an ascending and descending device 20 by a moving device (omitted in the figure), the second turning member 26 to which a laser torch 28 has been installed so as to be turnable around the second axis 03 is supported by the said member, and cylindrical interlocking shafts 30, 31 and bevel gears 35, 36 which are engaged each other to one end thereof are provided on their inside, annular members 37, 38 having truncated cone-shaped shielding cylindrical parts 37a, 38a, respectively are provided on said bevel gears 35, 36. Also, said shielding cylindrical parts 37a, 38a are superposed adjacently in the vicinity of an engaged part A of said bevel gears 35, 36. In this way, it is prevented that a wear particle and a lubricant, etc. which are scattered from said engaged part A adhere to a mirror 45 for reflecting a laser beam B, and its contamination, damage, etc. are prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a laser processing device that processes a workpiece with a laser beam, and particularly a laser processing device that prevents contamination of a mirror that guides the laser beam in a predetermined direction by reflection. Regarding.

[Prior art]

Laser processing equipment that uses a laser beam to trim, drill, cut, and treat the surfaces of workpieces with a '/g-contact angle of 8 is designed to orient the laser torch and chi at right angles to the processing surfaces of workpieces of various shapes. , a plurality of turning members are sequentially connected so as to be rotatable around different turning axes, and each connecting portion is provided with a mirror for guiding the laser beam through the inside of each member to the laser torch. This type of laser processing device has a hollow interlocking shaft that rotates each rotating member to control the attitude of the laser torch, and is provided coaxially with each rotating axis.
There is one in which the processing head is constructed compactly by using the inside as a path for the laser beam.

[Problem that the invention seeks to solve]

In such laser processing equipment, gears that connect the respective interlocking shafts are also provided inside the connecting portion where the mirror is provided, and wear powder generated from the meshing portion of each gear mixes with lubricant such as grease. It scatters and sticks to the mirror. If this mirror reflects all of the incident laser beam, no heat will be generated, but if abrasion particles, grease, etc. adhere to the mirror and some of the laser beam is no longer reflected, the absorbed laser beam will not be generated. The energy heats up the mirror,
Sometimes there is a problem with damage. The present invention solves the above problem in this type of laser processing apparatus by preventing abrasion particles, lubricant, etc. scattered from the meshing portion of the gears of the interlocking device from adhering to the mirror.

[Means for solving problems]

For this purpose, the laser processing apparatus according to the present invention includes a support member 22 supported by the transfer device 10 and a support member 22 rotatably supported by the support member 22 around the first axis 02, as illustrated in the embodiment of the accompanying drawings. a hollow first pivot member 24; a second pivot member 26 rotatably supported around a second axis 03 intersecting the first axis 02;
2 and 03, respectively, and one end 30a, 31
cylindrical first and second interlocking shafts 30.31 facing the inside of the first rotating member 24;
and a second bevel gear 35.36, both speed drive shafts 30.31 and both bevel gears 35.3 supported by the second turning member 26.
6, and a laser torch 28 whose attitude is controlled by the laser torch 28, which is provided inside the first rotating member 24, and reflects the laser beam B sent through the first interlocking shaft 30 and passes it through the second interlocking shaft 31. In the laser processing apparatus, the first and second bevel gears 35 and 36 are respectively provided with first and second annular members 37 and 38 coaxially, and the mirrors 45 and 38 of both annular members are provided coaxially with each other. The same first and second bevel gears 35 are attached to the edges of the 45 cases.
．． Close to the inner surfaces 35a, 36a of the toothed portions of the gears 35.36, truncated conical shielding cylinders 37a, 38a are formed, respectively, and both the shielding cylinders 37a, 38a are connected to the bevel gears 35.36.
It is characterized in that it is polymerized near the meshing part A of No. 36.

[Operation] The laser torch 28 supported by the second rotating member 26 is connected to the first interlocking shaft 30. The posture is controlled by the bevel gears 35 and 36 that mesh with each other and the second interlocking shaft 31, and the laser beam B sent through the first interlocking shaft 30 is reflected by the mirror 45 and passes through the second interlocking shaft 31. (Laser)--The laser beam is sent into the chip 28 to process the workpiece. Double bevel gear35.
The shielding cylindrical parts 37a and 38a of both annular members 37 and 38 partially overlap on the mirror two 45 side near the meshing part A of 36, and this overlapped part allows wear powder, lubricant, etc. to be transferred from the meshing part A to the mirror 45. Shield the object from scattering towards the object.

〔Effect of the invention〕

As described above, according to the present invention, both the shielding cylinder parts are overlapped and positioned between the meshing part of the bevel gear that controls the attitude of the laser torch and the mirror, so that wear powder, lubricant, etc. scattered from the meshing part are absorbed by the mirror. This prevents it from adhering to the surface and staining its surface. Therefore, the energy of the laser beam is not absorbed by the dirt on the mirror surface and the mirror is not heated, and damage to the mirror due to such heating can be prevented.

〔Example〕

Embodiments will be described below with reference to the accompanying drawings. As shown in the overall front view of FIG.
It has an elevating member 20 that supports a laser torch 28 via the elevating member 20, and this elevating member 20 is supported by the transfer device 10 so as to be movable in the X and Y directions of orthogonal coordinates in a horizontal plane.

First, the configuration of the transfer device 10 will be explained.
Supports 12 are erected at the four corners of the top surface, and a pair of first guide rails 13 extend in parallel to the upper ends of the supports 12. A first linear motion section 14 is guided and supported on the first guide rail 13 so as to be movable in the X direction, and is given reciprocating motion by a first servo motor 15 that rotates in forward and reverse directions. On the first linear motion part 14, a first
A second guide rail 16 is provided that is perpendicular to the guide rail 13, and a second linear motion part 17 is guided and supported to be movable in the Y direction. A nut 17a fixed to the second linear motion part 17 is screwed onto a feed screw 18 that is pivotally supported along the guide rail 16, and this feed screw 18 is rotationally driven by a second servo motor 19 that rotates in forward and reverse directions. The second linear motion section 17 is provided with a reciprocating motion. In this embodiment, a transfer device 1 that supports a support member 22 via an elevating member 20 is used.
0 is a rectangular coordinate system as described above, but it is also possible to use a polar coordinate system transfer device.

An elevating member 20 is guided and supported by the second linear motion portion 17 so as to be movable in the vertical Z direction, and is given vertical movement by a drive device (not shown). As shown in FIG. 1, the lifting member 20
At the lower end of the support member 22 is rotatable around the vertical axis 01.
(, 1 material 22 is in the same plane as the vertical axis 01, nib: 1 material 24 is supported so as to be rotatable around the intersecting first axis 02, and the first rotating member 24 '
'1' 7 which is in the same plane and perpendicular to i-line 02
, the second rotating member 26 ("3") is rotatable around the line 3.
;-, I'm sick. The second rotating member 26 has a second shaft kat 0'H.
28 are fixed, which are located in one plane and have orthogonal axes. 1z1"; Vinegar As shown in Figure 1,
The rotating member 24 is coaxial with the first axis 02 through a flange plate 24a on its - side (right side in Fig. 1); is fixed, and the hollow shaft 25 and U'f=f 17''l't1' 9
, '1. ``'1 ・ □ 3 is pivotally supported by the support member 22.
1','l A red moving shaft 30 is provided and a ball bearing 32 makes it hard. 1':
' is formed with a first bevel gear 35. =l: fA:
:'・11 times 11 (The cylindrical member 24b is fixed coaxially with the small 2 rice wire 03 on the other side of the material 24 (lower side in FIG. 1).

: '1' t・ 2nd/2nd member 2 via the rich member 24b and the ball bearing 33
The hollow second interlocking shaft 31 fixed to the first rotating member 2
It is pivoted on 4. A second bevel tooth group 36 that meshes with the first bevel gear 35 is fixed to one end 31 a of the second interlocking shaft 31 facing inside the first rotating member 24 . With the above configuration, when the first interlocking shaft 30 rotates relative to the first rotating member 24, the second rotating member 26 rotates together with the second interlocking shaft 31 relative to the first rotating member 24. The first interlocking shaft 30 is rotationally driven by a drive device via a pair of bevel gears provided in the support member 22 and a hollow interlocking shaft coaxial with the vertical axis 01 (none of which is shown). . Further, although not shown, an interlocking mechanism similar to the above is used to rotate the first rotating member 24 with respect to the support member 22 via the hollow shaft 25, and to rotate the support member 22 with respect to the elevating member 20. Each is provided for the purpose of

As shown in FIG.
02゜゜3, Cゎere4
It is mounted on a 6-degree incline, 5::).

Similar mirrors 44, 46 c;: quotient・′□knee?
.

The support member 22 and ::::, 2 by the support device.
, 'j1fi・1west1i1 (Also provided in the material 26. Laser... +#>□! (Bi)') is oscillated by the refractive reflector +) IJ41.
Wj, : :ij) il Laser b sent along the 100-axis line O1; -P, C, :Ha.

Rotation angle of each member 22, 24, 26 (i, j) I::j1. :11 Te), Shizu, predeceased 7 44 & Zyo 9
．． , the shot passes through the inside of □゛1, 11.1.1, b1-130, then passes through the mirror 45; Mirror'-4=”!
i i:: ,':'E:: ,,1 is reflected and sent into the laser torch 28.
, 14 is bundled and irradiated onto the workpiece W to process it.

It's becoming a sea urchin.

In the illustrated embodiment, the first five parts of the present invention are seven.
and second annular members 37, 38 hag, fj white! 4
0'#T42 bevel gear 35. Fitting surface χ, = inner peripheral surface of 36
Sa, hold; 1・'・ru. As shown in FIG. 1 Bevel gear 3.
A shielding cylindrical portion 37a is formed which extends in a +, :ii shape. The second annular member 38 is connected to the mirror 45 from the fitting part to the second bevel gear 36.
A shielding cylindrical portion 38a that extends in the radial direction along the side surface and widens into a truncated conical shape close to the inner surface 36a of the mountain portion of the second bevel gear 36 is formed at the outer peripheral edge thereof. The shielding cylindrical portion 38a of the second annular member 38 is located near the meshing portion A of both bevel gears 35 and 36.
a and the inner surface 35a of the mountain portion of the first bevel gear 35, and in this portion both shielding cylinder portions 37a,
38a are mutually polymerized. Therefore, when viewed from the mirror 45 side, the engaging portion A is in the shadow of this overlapping portion.

In the laser processing apparatus of this embodiment, each member 22.2
4 and 26 are respectively rotated by a control device via an interlocking device to control the attitude of the laser torch 2. As part of this control, the first interlocking shaft 30 is rotated, and this rotation is transmitted to the second interlocking shaft 31 via the first and second bevel gears 35,36.

Due to this transmission, abrasion powder is generated at the meshing part A of both bevel gears 35 and 36, and it mixes with lubricant such as grease.
Spatter more. However, between the meshing part A and the mirror 45, there are shielding cylinder parts 37a and 38a of both layered members 37 and 38.
Since the meshing part A is located, wear particles and moisture scattered from the meshing part A can be removed. The h agent is blocked by this m joint and does not adhere to the mirror 45 and stain its surface.

In the above embodiment, the bevel gear 35 in the first turning member 24
．． 36 are provided with annular members 37 and 38 to prevent the mirror 45 from getting dirty, but a similar annular member can also be provided on the bevel gear in the support member 22 to prevent the mirror 44 from getting dirty.

In addition, when both bevel gears 35 and 36 are made of iron, the annular member 3
If 7.38 is made of a ferromagnetic material and magnetized, iron powder produced by the wear of the bevel gears 35 and 36 will be strongly adsorbed, so that the mirror 45 can be more reliably prevented from becoming dirty.

[Brief explanation of drawings]

The drawing shows an embodiment of a laser processing device according to the present invention,
FIG. 1 is a partially cutaway front view of the main parts, and FIG. 2 is an overall front view. Explanation of symbols 10... Transfer device, 22... Support member, 24...
First rotating member, 26... Second rotating member, 2nd... Laser torch, 30... First interlocking shaft, 30a... One end, 31... Second interlocking shaft, 31a... One end , 35...
・First bevel gear, 35a...inner surface of tooth portion, 36...
2nd bevel gear, 36a...inner surface of tooth portion, 37...first annular member, 37a...shielding cylinder part, 38...second annular member, 38a...shielding cylinder part, 45 ...Miller, A
...meshing part, B...laser beam, o2...first
Axis line, 03...second axis line.

Claims (1)

[Claims] a support member supported by a transfer device; a hollow first pivot member supported by the support member so as to be rotatable about a first axis; and a first hollow pivot member rotatable about a second axis intersecting the first axis. a supported second rotating member; cylindrical first and second interlocking shafts that are provided coaxially with the first and second axes and each having one end facing inside the first rotating member; first and second bevel gears provided at each end of the second interlocking shaft and meshing with each other; a laser torch supported by the second rotating member and having an attitude controlled by both the interlocking shafts and the bevel gears;
In the laser processing apparatus, the laser processing apparatus includes a mirror provided inside the first rotating member to reflect a laser beam sent through the first interlocking shaft and send it to the laser torch through the second interlocking shaft. and the second bevel gear is provided with first and second annular members coaxially, respectively,
The first and second rings are attached to the mirror-side edges of both annular members.
A laser processing device characterized in that a truncated cone-shaped shielding tube is formed close to the inner surface of the tooth portion of the bevel gear, and both of the shielding tubes are overlapped near the meshing portion of both the bevel gears. .