JPS62168689A - Cutting method using laser beam - Google Patents

Abstract

PURPOSE:To prevent the damage to a product and to improve the work efficiency by holding the material to be worked at the vertical or close to vertical angle and by relatively moving a laser torch and the material to be worked. CONSTITUTION:A laser oscillator 11 is placed on a cradle 10 and a laser beam 2 is projected on the material 5 to be worked via a condensing lens 14 by refracting it with stationary and mobile beam benders 12, 13 as well. In this case, the mobile beam bender 13 enables its reciprocating movement in the vertical direction, moving a laser torch 16 in Y axis direction. Moreover, the material 5 to be worked held at the vertical or close to vertical angle enables the reciprocating movement in the horizontal direction H. The torch 16 performs a two-dimensional cutting with the Y axis movement of the mobile bender 13 and X axis movement of the material 5. Due to the product after being worked not crossing the laser beam 3 its damages are prevented and the work efficiency is improved as well by the reduction in the adjustment work.

Description

[Detailed description of the invention] Industrial application field: The present invention is applicable to cutting processing using a laser beam.
The present invention relates to a method in which a cut workpiece is taken out without being affected by a laser beam, the workpiece is prevented from being damaged, and a plate-shaped body can be efficiently cut.

Prior art: Currently, in the general two-dimensional cutting system using a laser beam, the material to be processed (workpiece) is A well-known method is to horizontally carry out the process, and an NC table is commonly used as the stand on which it is placed. Now, this is the 7th
Referring to the figure or Fig. 8, the material to be processed (6) is set horizontally, and the laser beam (
2) was irradiated and cut. However, this conventional method has the following problems. That is, (
(b) In relation to (a), for large area processing materials,
The size of the table tends to become excessively large. (c) A supporting jig for the processed material (for example, one in which many small INs with sharp points are planted, hereinafter referred to as kenzan) is required; It is used to support the entire surface area. Accordingly, C1 requires a large number of these having the required strength and gold. In addition, the appropriate number of supporting jigs varies from the viewpoint of production technology, and furthermore, due to the shape of the material to be processed, it is not possible to plant them at arbitrary locations, resulting in a lack of versatility.2) As shown in Figure 7, For example, the product (6) falls after being cut from the workpiece 16) supported by the tsurugi (3), but in the case of a material like acrylic, the product is exposed to a laser beam at the same time as it falls! 21 irradiation, the surface may be damaged. To prevent this, check the timing while watching the progress of cutting. To prevent falling or shifting, hold the product and the processed material at appropriate positions as shown in Figure 8. Secure it with tape (4) etc.
(e) When obtaining products continuously, the laser beam
For example, a product that has fallen into a take-out mechanism such as a conveyor under the tape or a tray? : In order to completely prevent damage caused to these items by irradiation, it is necessary to provide the removal mechanism with a function to protect the processed products from laser beam irradiation. If the support jig hits the face, it will heat up and the heated support jig may damage the product (when the material is made of synthetic resin, etc.), so please carefully consider the shape and size of the product before using the support jig. The position must be set.

(g) Once the material to be processed is placed on a support jig such as a mount, even if you want to move the material for some reason, the mounts are scattered all over the place, making it difficult to move it horizontally, making it difficult to touch the mount. (7) When placing processed materials, there is actually a detour to unload them from the carrier E to a fixed position, which is inefficient due to potential loss. A solution is desired. It was °C.

Problem to be solved by the invention: The present invention has been made to solve all of the above-mentioned problems, and the present invention is aimed at solving all of the above-mentioned problems. The focus is on ensuring that the object falls completely downward. And C1, as a concrete method, the material to be processed is held vertically or at an angle close to vertical, and then cut (il-proposed by Ichiro).

@ River configuration: According to the conventional method, the workpiece is held horizontally and cut by a laser beam irradiated vertically from above, whereas in the method of the present invention, the workpiece 'f: vertically Alternatively, the laser torch is held at a nearly vertical angle and the cutting process is performed while maintaining the horizontal direction. The relative relationship between the processed material and the laser beam is as follows: (a) The laser torch is moved in the same plane according to the shape of the target product while the processed material is held vertically (including angles close to perpendicular, and the same shall apply hereinafter). (b) The laser torch remains stationary in a horizontal direction, and the material to be processed is moved in a vertical plane according to the shape of the target product. (c) The material to be processed, which is held vertically, is moved in the same direction. The laser torch is designed to be capable of reciprocating horizontally within a vertical plane, while the laser torch is capable of reciprocating vertically to create a pattern on the surface of the material to be processed in accordance with the shape of the target product. (d) Processing There are 04 ways to reverse the relative motion of the material and the laser torch to (c). Among these relationships, the above 4 depend on factors such as the substance, composition, or thickness of the material to be cut, or the capacity of the laser oscillator that is compatible with the material to be processed.
A suitable aspect can be selected from among the various relative relationships.

In the method of the present invention, a portion of the dross generated during cutting with a laser beam may hang down, but the direction of the air flow of the assist gas blown from the laser torch and the direction in which the product falls are at right angles, and the direction in which the dross is scattered is aligned with the product. Since the movement line of the cutter is avoided, there is no concern that the cutting process will be hindered by the generated dross.

Therefore, it is possible to cut even materials that produce a large amount of dross, such as some metals and structural copper materials such as tViSS41.

Embodiment: Next, a specific embodiment of the present invention will be explained based on the drawings. As shown in Fig. 1, a laser oscillator (11) is placed on a pedestal (10), and the projected laser beam 12) is refracted by a predetermined beam bender t121% movable beam bender (14), and is refracted by a condensing lens ( The laser beam (I4) is combined with the laser beam to irradiate a desired location on the surface of the processing material (61).The mirror is a light-shielding panel that prevents the laser beam (2) from diffusing.

Then, C1 is a moving beam bender (18 is fully capable of reciprocating in the vertical direction M. In other words, the condenser lens 14)
and laser torch (1~ is possible [as it is located on the optical axis of IdJ beam bender iIS, it is a movable beam bender;
The vertical movement (g) of the first axis causes a laser torch (one line is movement U in the Y-axis direction). Further, the workpiece 16), which is held vertically by appropriate means as described later, is capable of reciprocating in the horizontal direction (b). That is, the laser torch tilt relatively moves in the X-axis direction.

Therefore, it is possible to move the Y-axis of the hJ dynamic beam bender field and to cut all shaped products.

In order to smoothly carry out the on-duty holding of the workpiece 16) and the horizontal reciprocating movement, a mechanism such as the one shown in FIG. In other words, the drive base (7) E having a ball screw is attached to the ball screw in a horizontal direction (
6) C is equipped with a lower support that is capable of reciprocating motion. At one end of the lower support 1, which is capable of fine reciprocating motion due to the combination of the ball screw and the engager, a fixed side support is raised and recessed, and is exposed to maintain a required distance from the fixed side support @. A movable support @ is provided that stands in a predetermined position. The top ends of both the fixed and movable supports are both formed with a /7' id head μs weight, and the guide rails are lowered to 1111 on the double-edged id head. The gate head (to) on the fixed side support machine side and the guide rail are firmly attached, making it possible to
The gate head inside the J support and the guide rail are designed to be able to slide, and the movable side support is compatible with the fixed side support (A) and the processed material to be held (6). By maintaining the span, it can be established in a stable state. Then, an appropriate number of clamps are provided on each of the identification side support and the movable side support to tighten and hold the workpiece 15+' to be supported.

What is illustrated in FIG. 3 or FIG. 4 is another embodiment, #
, tl + The bottom support that cleans C reciprocating #J1't on the top surface of the stand! The support method for the processed material (6) provided at 211 is different. The one shown in FIG. 3 is suitable when the material to be processed is a thin plate, and the movable side support (2) is a magnetically permeable flat plate body, and there is a deformation prevention plate (C) between the movable side support and the fixed side support. The processing material is the movable side support (machine and deflection prevention piece (c) K).
Attach it and hold it fixed with magnet 4. The one shown in Figure 4 is suitable when the material to be processed is a thick plate, and is a lower support! 21) A V-notch 271'J&: is carved along the length of the surface.

As mentioned above, each component is 5T[ which can be freely adapted to the variety of materials, thicknesses, etc. of processed materials, and one specific example of all of them is shown in FIG.

In this device example, a fixed beam bender +
12J, a movable beam bender haze, a condensing lens I, etc. are arranged in the optical system gate Uη, and the laser torch haze smoothly moves vertically (Y axis) while maintaining an appropriate luminous flux. and,
By cooperating with the horizontal (X-axis) movement of the processed material 15), it is possible to perform the cutting process and obtain a product with no quality defects.

Effect of the invention: The workpiece material, which is the workpiece base material, is held at a vertical or nearly vertical upright angle, and the projection direction of the laser beam is directed toward the workpiece while keeping it horizontal, so that the workpiece and the laser torch are aligned relative to each other. When using the method of the present invention in which motion is applied, it is possible to create a product (6) of a desired shape from the processed material 16), as shown in FIG. That is, as shown in FIG. 6 (8), first the laser beam 12)
pierce +71 ft, turn downward and start cutting until reaching the starting point (8). Next, a cutting line (9) is formed as shown in FIG. 6cA)Q3), and a product as shown in the same <(C) can be obtained.

Effects of the Invention: The present invention has the following advantages because the material to be processed is held and cut at a vertical or nearly vertical angle.

(D) The installation space of the specific device can be minimized in area.

■ The method of holding the material vertically on a drive table only requires the length of the drive table to be supported, even when processing a large area of material, from a design standpoint.

As for supporting the processed material, it is sufficient to support the vertical or nearly vertical sides to prevent it from falling (supporting the weight of the material itself in a direction perpendicular to the surface) is sufficient. (This is not a way of thinking.) There is no need for a support jig like a tsurugi.

(g) Since we do not have the above support jig, we cannot adjust it.
The man-hours required for adjustment are completely unnecessary.

(V) Since the cut product does not cross the C laser beam when being removed from the processed material, there is no need for a special ejection mechanism to prevent damage to the product.

(6) Since the upper part from the lower support can be set to an appropriate size according to the size of the workpiece, there is no need to slightly change the workpiece once held.

■ When placing the processed material on the lower support, the work is done by pushing it in and there is no need to lift it.

Cutting the material to be processed is performed in approximately one plane when considered in the vertical direction, making it easier to control where the product falls.

As described above, the present invention has remarkable effects compared to conventional methods, and has great industrial applicability.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention, FIG. 2 is a perspective view of a part that holds the processed material and makes horizontal reciprocating motion, and FIG. 3 is an embodiment suitable for thin objects of the holding part of the processed material. Fig. 4 shows an example of a holding part for processing material suitable for thick materials, Fig. 5 is a perspective view showing one example of a specific device, Fig. 6 Figures 7 and 8 are diagrams showing the progress of the cutting line, and Figures 7 and 8 are diagrams showing conventional examples. Figure 7 shows a case where a holding tape is used, and Figure 8 shows a state in which the laser beam damages the product. ft)・...Laser torch ;2) ...Laser beam (3) ...Kenzan (4) ...Holding tape (6) ...Processing material (6) ...Product (7) ...Pier (8)...Start point (9)...Cutting line (1o)...
Stand:■)...Laser oscillator a...Fixed beam bender t11...Movable beam bender (14...
・Condensing lens tilt... Light shielding panel 4... Laser the torch αη... Optical system gate (7)...
・Drive table @υ...lower support (company)...
・Fixed side support (2)...Movable side support (Foundation)
...Guitrail Sichuan Gate Head 2...
・Ramp victory...V/ Sochi (Foundation)...
・Magnet for single opening to prevent deflection

Claims (1)

[Claims] 1. Irradiating a laser beam to a processed material to be cut,
In a method of cutting a desired product; the material to be processed is held vertically or at an angle close to vertical, the laser torch is kept in a horizontal direction, and the desired shape is achieved by moving the material to be processed and the laser beam relative to each other. A cutting method using a laser beam, characterized in that a product is created by forming a cutting line according to the following. 2. A cutting method using a laser beam according to claim 1, in which the material to be processed is held at a vertical or near-vertical angle, and the laser torch is moved according to the shape of the target product. 3. A cutting method using a laser beam according to claim 1, wherein the laser torch remains stationary while maintaining a horizontal direction, and the material to be processed is moved according to the shape of the target product. 4. The material to be processed, which is held vertically or at a near-vertical angle, can be reciprocated in the horizontal direction, and the laser torch can be reciprocated in the vertical direction to create a pattern in the shape of the target product on the surface of the material to be processed. A cutting method using a laser beam according to claim 1, wherein the laser beam is made to appear as follows. 5 The material to be processed, which is held vertically or at a nearly vertical angle, can be reciprocated in the vertical direction, and the laser torch can be reciprocated in the horizontal direction to create a pattern in the shape of the target product on the surface of the material to be processed. A cutting method using a laser beam according to claim 1, wherein the laser beam is made to appear as follows.