CN216706363U - Laser welding working distance measuring system - Google Patents
Laser welding working distance measuring system Download PDFInfo
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- CN216706363U CN216706363U CN202122105709.6U CN202122105709U CN216706363U CN 216706363 U CN216706363 U CN 216706363U CN 202122105709 U CN202122105709 U CN 202122105709U CN 216706363 U CN216706363 U CN 216706363U
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Abstract
The utility model belongs to the technical field of laser welding, and discloses a laser welding working distance measuring system, which comprises: the calibration block comprises an L-shaped calibration block, a first calibration surface and a second calibration surface, wherein the two planes of a concave part of the calibration block, which are perpendicular to each other, are respectively fixed on the side wall of the laser processing head; the ruler is attached to the first calibration surface, one side edge of the ruler is attached to the second calibration surface, one end of the ruler is abutted to the surface of the workpiece to be welded, and the ruler is used for measuring defocusing amount. When the laser processing head inclines, the straight ruler can also incline along with the laser processing head, the straight ruler can be ensured to be parallel to the axis of the laser processing head, the defocusing amount can be accurately measured, and adverse effects on the repeatability of process parameters can be avoided.
Description
Technical Field
The utility model belongs to the technical field of laser welding, and particularly relates to a laser welding working distance measuring system.
Background
Laser welding is an efficient precision welding method using a laser beam with high energy density as a heat source. Laser welding can be achieved by using a continuous or pulsed laser beam, and the principle of laser welding can be divided into heat conduction type welding and laser deep fusion welding. The power density is less than 104-105W/cm2The welding is heat conduction welding, and the welding depth is shallow and the welding speed is slow; the power density is more than 105-107W/cm2The deep fusion welding is formed, and the method has the characteristics of high welding speed and large depth-to-width ratio.
Laser welding is increasingly widely used in the industrial fields of engineering machinery, automobile industry, ferrous metallurgy and the like, and has the following characteristics: the welding speed is high, the depth is large, and the deformation is small; moreover, welding can be realized under special conditions, for example, laser passes through an electromagnetic field, light beams cannot deviate, welding can be carried out in vacuum, air and certain gas environments, and glass or light beam transparent materials can pass through; the welding can weld refractory materials and can weld dissimilar materials, and the effect is good; after laser is focused, the power density is high; the laser welding device can realize precise welding, and a laser beam can obtain a very small light spot after being focused, can be accurately positioned, and can be applied to welding of micro and small workpieces in large-scale automatic production; the accessibility of the light beam is good, the non-contact remote welding of the position which is difficult to access can be realized, and great flexibility is realized; the laser beam can realize the time and space light splitting of the light beam and can carry out the simultaneous processing of multiple light beams and the multi-station processing.
In laser welding, the defocusing amount has an important influence on the welding quality. Laser welding usually needs a certain defocusing amount, and because the power density of the spot center at the laser focus is too high, the material is easy to react violently, and defects such as air holes and splashing are formed. On each plane away from the laser focus, the power density distribution is relatively uniform, and the proper defocusing amount can realize good weld forming and internal quality. During welding, the defocus or working distance is typically measured and adjusted using a ruler with reference to the focal position marked on the laser machining head.
The method can realize more accurate measurement when the laser processing head and the surface of the workpiece to be welded are in relative vertical positions. However, when the laser processing head needs to be tilted at a certain angle during welding, the measurement of the working distance is easy to generate a large error, thereby causing adverse effects on the repeatability of process parameters.
Therefore, a laser welding working distance measuring system is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a laser welding working distance measuring system which can ensure that a straight scale is parallel to the axis of a laser processing head, can accurately measure defocusing amount and does not have adverse effect on the repeatability of process parameters.
In order to achieve the purpose, the utility model adopts the following technical scheme:
there is provided a laser welding working distance measuring system including:
the calibration block comprises an L-shaped calibration block, a first calibration surface and a second calibration surface, wherein the two planes of concave parts of the calibration block, which are perpendicular to each other, are fixed on the side wall of the laser processing head;
the ruler is attached to the first calibration surface, one side edge of the ruler is attached to the second calibration surface, one end of the ruler is abutted to the surface of the workpiece to be welded, and the ruler is used for measuring defocusing amount.
As an optimal technical scheme of the laser welding working distance measuring system, one side, away from the second calibration surface, of the first calibration surface is provided with limiting protrusions, and the ruler is clamped between the second calibration surface and the limiting protrusions.
As a preferred technical scheme of laser welding working distance measurement system, still include the connecting plate of L type, it includes first connecting plate and the second connecting plate that mutually perpendicular set up, first connecting plate passes through the fix with screw on the lateral wall of laser beam machining head, the calibration piece is fixed the top of second connecting plate.
As an optimal technical scheme of the laser welding working distance measuring system, an L-shaped first groove is formed below the calibration block, the second connecting plate is embedded in the first groove, and the lower surface of the second connecting plate is coplanar with the lower surface of the calibration block.
As an optimal technical scheme of the laser welding working distance measuring system, a first calibration line is arranged on the first connecting plate and is located on a plane where the first calibration surface is located.
As an optimal technical scheme of the laser welding working distance measuring system, an L-shaped second groove is formed in the side face, close to the laser machining head, of the calibration block, and the first side face of the second groove is coplanar with the first calibration face.
As an optimal technical scheme of a laser welding working distance measuring system, be provided with first connecting hole on the first connecting plate, first connecting plate with the laser processing head is through wearing to locate the screw connection of first connecting hole, the nut of screw is located in the second recess.
As an optimal technical scheme of the laser welding working distance measuring system, a second connecting hole is formed in the second connecting plate, a third connecting hole corresponding to the second connecting hole is formed in the calibration block, and the second connecting plate is connected with the calibration block through a bolt penetrating through the second connecting hole and the third connecting hole.
Compared with the prior art, the utility model has the following beneficial effects:
because the central marking line and the axis of the laser processing head are both positioned on the plane where the first calibration surface is positioned, the ruler is attached to the first calibration surface, and one side edge of the ruler is attached to the second calibration surface, the axis of the laser processing head can be parallel to the ruler, and the laser beam emitted by the laser processing head is parallel to the ruler; the specific measuring mode is that the distance between the laser focus of the laser processing head and the bottom surface of the calibration block is measured firstly, then one end of the ruler is abutted to the surface of a workpiece to be welded, the defocusing amount is obtained through the reading of the ruler on the bottom surface of the calibration block and calculation. When the laser processing head inclines, the straight ruler can also incline along with the laser processing head, the straight ruler can be ensured to be parallel to the axis of the laser processing head, the defocusing amount can be accurately measured, and adverse effects on the repeatability of process parameters can be avoided. And the measuring system has simple structure and convenient use.
Drawings
FIG. 1 is a schematic diagram of a laser welding working distance measuring system according to the present invention;
FIG. 2 is a schematic view of a partial structure of a laser welding working distance measuring system provided by the present invention;
FIG. 3 is a schematic structural view of a calibration block and a connection plate provided by the present invention;
FIG. 4 is a schematic structural diagram of a calibration block provided in the present invention;
fig. 5 is a schematic structural diagram of a connection plate provided by the present invention.
10, a laser processing head; 20. a workpiece to be welded;
1. calibrating the block; 11. a first calibration face; 12. a second calibration face; 13. a third connection hole; 14. a first side surface; 15. a limiting bulge; 16. a first groove;
2. a connecting plate; 21. a first connecting plate; 211. a first connection hole; 212. a first calibration line; 22. a second connecting plate; 221. a second connection hole;
3. a straightedge.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1 to 5, the present embodiment discloses a laser welding working distance measuring system, which includes a calibration block 1, a straight scale 3, and a connecting plate 2.
The calibration block 1 is L-shaped, and the calibration block 1 is fixed to a side wall of the laser processing head 10, specifically to the laser processing head 10 via a connection plate 2. Wherein, the cross-sectional shape of the connecting plate 2 is L-shaped. The connecting plate 2 includes a first connecting plate 21 and a second connecting plate 22 which are arranged perpendicular to each other, the first connecting plate 21 is fixed to a side wall of the laser processing head 10 by screws, and the calibration block 1 is fixed above the second connecting plate 22. Specifically, the first connection plate 21 is provided with a first connection hole 211, which is specifically a strip-shaped hole, and the first connection plate 21 is connected to the laser processing head 10 through a screw penetrating through the first connection hole 211. The side of the calibration block 1 close to the laser processing head 10 is provided with an L-shaped second groove, and the nut of the screw is located in the second groove.
An L-shaped first groove 16 is formed below the calibration block 1, a second connecting plate 22 is embedded in the first groove 16, and the lower surface of the second connecting plate 22 is coplanar with the lower surface of the calibration block 1.
Two planes of the concave part of the calibration block 1, which are vertical to each other, are respectively a first calibration surface 11 and a second calibration surface 12, the first calibration surface 11 and the second calibration surface 12 are both parallel to the axis of the laser processing head 10, the intersection line of the first calibration surface 11 and the second calibration surface 12 is a central marking line, and the central marking line and the axis of the laser processing head 10 are both located on the plane where the first calibration surface 11 is located.
The first connecting plate 21 is provided with a first calibration line 212, and the first calibration line 212 is located on the plane of the first calibration surface 11. The first calibration line 212 is coaxial with the axis of the laser processing head 10 and lies on the centre line of the side face during mounting.
The first side 14 of the second recess of the calibration block 1 is coplanar with the first calibration face 11. The second connecting plate 22 is provided with a second connecting hole 221, the calibration block 1 is provided with a third connecting hole 13 corresponding to the second connecting hole 221, the second connecting hole 221 and the third connecting hole 13 are both strip-shaped holes, and the second connecting plate 22 is connected with the calibration block 1 through bolts penetrating through the second connecting hole 221 and the third connecting hole 13. In the process of fixing the calibration block 1 to the second connecting plate 22, the first side surface 14 and the first calibration line 212 are firstly overlapped and then fixed, so that the first calibration surface 11 and the first calibration line 212 are both located on the plane of the first calibration surface 11, and the central marking line and the axis of the laser processing head 10 are both located on the plane of the first calibration surface 11.
The laser machining head 10 is moved along its axis by observing the readings of the straightedge 3 to adjust the amount of defocus to the appropriate value.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A laser welding working distance measuring system, comprising:
the calibration block (1) is fixed on the side wall of a laser processing head (10), two planes, perpendicular to each other, of a concave part of the calibration block (1) are respectively a first calibration surface (11) and a second calibration surface (12), the first calibration surface (11) and the second calibration surface (12) are both parallel to the axis of the laser processing head (10), the intersection line of the first calibration surface (11) and the second calibration surface (12) is a central marking line, and the central marking line and the axis of the laser processing head (10) are both located on the plane where the first calibration surface (11) is located;
ruler (3), its laminating in first calibration surface (11), a side laminating of ruler (3) in second calibration surface (12), the one end butt of ruler (3) is in the surface of waiting to weld work piece (20), ruler (3) are used for measuring out of focus volume.
2. The laser welding working distance measuring system according to claim 1, characterized in that a stop protrusion (15) is arranged on the side of the first calibration surface (11) remote from the second calibration surface (12), and the straight edge (3) is clamped between the second calibration surface (12) and the stop protrusion (15).
3. The laser welding working distance measuring system as claimed in claim 1, characterized by further comprising an L-shaped connecting plate (2) comprising a first connecting plate (21) and a second connecting plate (22) arranged perpendicularly to each other, the first connecting plate (21) being fixed to a side wall of the laser processing head (10) by screws, the calibration block (1) being fixed above the second connecting plate (22).
4. The laser welding working distance measuring system according to claim 3, wherein an L-shaped first groove (16) is provided below the calibration block (1), the second connecting plate (22) is embedded in the first groove (16), and a lower surface of the second connecting plate (22) is coplanar with a lower surface of the calibration block (1).
5. The laser welding working distance measuring system according to claim 4, characterized in that a first calibration line (212) is provided on the first connecting plate (21), the first calibration line (212) being located on a plane on which the first calibration face (11) is located.
6. A laser welding working distance measuring system according to claim 3, characterized in that the side of the calibration block (1) close to the laser machining head (10) is provided with a second groove of L-shape, the first side (14) of which is coplanar with the first calibration plane (11).
7. The laser welding working distance measuring system according to claim 6, characterized in that a first connecting hole (211) is provided on the first connecting plate (21), the first connecting plate (21) being connected with the laser processing head (10) by a screw inserted through the first connecting hole (211), the nut of the screw being located in the second recess.
8. The laser welding working distance measuring system according to claim 6, wherein a second connecting hole (221) is provided in the second connecting plate (22), a third connecting hole (13) corresponding to the second connecting hole (221) is provided in the calibration block (1), and the second connecting plate (22) and the calibration block (1) are connected by a bolt inserted through the second connecting hole (221) and the third connecting hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122105709.6U CN216706363U (en) | 2021-09-01 | 2021-09-01 | Laser welding working distance measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122105709.6U CN216706363U (en) | 2021-09-01 | 2021-09-01 | Laser welding working distance measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216706363U true CN216706363U (en) | 2022-06-10 |
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ID=81872465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122105709.6U Active CN216706363U (en) | 2021-09-01 | 2021-09-01 | Laser welding working distance measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216706363U (en) |
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2021
- 2021-09-01 CN CN202122105709.6U patent/CN216706363U/en active Active
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