CN211588966U

CN211588966U - Laser cutting fixture for metal thin film

Info

Publication number: CN211588966U
Application number: CN201922450341.XU
Authority: CN
Inventors: 周阳; 杨勇刚
Original assignee: Wuxi Kunlun Fuji Instrument Co ltd
Current assignee: Wuxi Kunlun Fuji Instrument Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-29
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a laser cutting anchor clamps of metal film piece belongs to laser cutting technical field. It includes laser instrument and electrical system, the laser instrument sets up laser cutting anchor clamps top, the characteristic is: the laser cutting fixture further comprises a fixing bottom plate, a plate positioning plate and an electromagnet, the fixing bottom plate is fixed on the laser equipment workbench through a mounting screw pin, the plate positioning plate and the electromagnet are combined into a whole and mounted on the fixing bottom plate through screws, an operation switch is arranged in a control part, and the control part controls the attraction of the electromagnet through the operation switch. The utility model utilizes the electrification of the electromagnet to generate magnetic force, so that the metal film sheet can be firmly fixed in position in the laser cutting process; the flatness of the installed plate is guaranteed, the installation is simple, the positioning is reliable, and the working efficiency is high; the laser cutting precision can be improved, and burrs are effectively prevented from being generated.

Description

Laser cutting fixture for metal thin film

Technical Field

The utility model belongs to the technical field of laser cutting technique and specifically relates to a laser cutting anchor clamps of metal film piece, use in being used for pressure transmitter's isolation diaphragm laser cutting specially.

Background

In the prior art, laser technology has been widely used for cutting sheet metal and strip, but the use of cutting sheet metal (thickness less than 1 mm) is rare. When the laser is used for cutting the metal film sheet, the metal film sheet is usually placed on a honeycomb plate or a dentate support plate tooling fixture, a laser emits a laser beam to irradiate on the metal film sheet, so that the material is quickly heated to a gasification temperature to be evaporated to form holes, the molten waste residues are blown away by matching with auxiliary gas (carbon dioxide, oxygen, nitrogen and the like) along with the movement of the light beam to the material, the holes continuously form a slit with a narrow bandwidth, and the cutting of the material is completed. In practical applications, since the thickness of the isolation diaphragm used in the pressure transmitter is small, usually between 0.03mm and 1.5mm, and the requirements for the flatness of the material (below 0.05 mm) and the burr height (below 0.007 mm) are high, the following problems are likely to occur in practical laser cutting:

1. in order to melt the surface of the metal film sheet, the metal film sheet is required to be melted by means of the reflected heat of laser on a metal material, and the metal film sheet is directly placed on a tool fixture of a honeycomb plate or a dentate support plate, so that the surface of the material has a certain height difference, and the laser reflection is different, so that when the height difference is large, the laser power is low, and the film sheet cannot be cut; on the contrary, when the height difference is small and the reflection is large, the laser power is high, the surface of the thin film sheet material is easy to damage, and the cut workpiece can generate large burrs at the edge.

2. Because the laser cutting is to irradiate the workpiece by using a high-power-density laser beam, the irradiated metal material is quickly melted, and simultaneously, the melting residue is blown off by means of high-speed airflow coaxial with the laser beam, so that the workpiece is cut. The pressure of high-speed airflow is usually above 0.6MPa, and the metal film sheet is easy to deform under the high-speed and high-pressure gas purging, so that the cut workpiece can not meet the requirements of size and form and position tolerance.

3. The isolation diaphragm part used in the manufacture of the precision pressure transmitter is characterized in that: the thickness is thin, the size precision is high, and the requirements for flatness and edge burrs are strict, so the technical requirements are difficult to meet according to the prior art.

Disclosure of Invention

An object of the utility model is to provide a laser cutting anchor clamps of metal film piece uses this anchor clamps can improve laser cutting work efficiency, and the operation and the installation of being convenient for prevent that sheet metal from producing displacement and deformation at the laser cutting in-process, and can improve metal film piece laser cutting precision, can prevent burr production in the laser cutting simultaneously.

According to the utility model provides a technical scheme: the laser cutting fixture for the metal thin film sheet comprises a laser, wherein the laser is arranged above the laser cutting fixture, and is characterized in that: the laser cutting fixture further comprises a fixing bottom plate, a plate positioning plate and an electromagnet, the fixing bottom plate is fixed on the laser equipment workbench through a mounting screw pin, the plate positioning plate and the electromagnet are combined into a whole and mounted on the fixing bottom plate through screws, an operation switch is arranged in a control part, and the control part controls the attraction of the electromagnet through the operation switch.

As a further improvement, the plate positioning plate and the electromagnet adopt a whole mode to process the groove, the thickness and the width of the groove are the same as the thickness and the width of the metal sheet.

As a further improvement, the plate positioning plate is a rectangular metal plate, a plurality of circular through holes are processed on the rectangular metal plate, and the inner diameter of each circular through hole is smaller than the outer diameter of each metal film sheet for installing a circular electromagnet.

As a further improvement, the outer diameter of the electromagnet is smaller than the inner diameter of the plate positioning plate.

As a further improvement, the quantity of electro-magnet is provided with a plurality of, the quantity of electro-magnet is the same with the round hole quantity on the panel locating plate.

As a further improvement of the utility model, the working voltage of the electromagnet is DC 12V.

Compared with the prior art, the utility model has the advantages that:

1. because the suction principle of the electromagnet is adopted for positioning, the generation of burrs in the laser cutting of the metal film sheet is effectively solved.

2. The plate positioning plate and electromagnet integrated groove processing structure is reliable in positioning, and the problems that a metal film sheet is easy to deform in laser cutting and low in processing precision are effectively solved.

3. The structure is simple to install in the assembling process, time and labor are saved, and the laser cutting efficiency is improved.

Drawings

Fig. 1 is a top view of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is an enlarged view I of fig. 2.

Description of reference numerals: 100-a laser welding fixture, 10-a fixed bottom plate 10, 20-a plate positioning plate, 30-an electromagnet, 40-a control part, 41-an operation switch, 50-a metal thin plate, 51-a metal thin film sheet, 60-a laser, 70-a screw and 80-a screw pin.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples.

As shown in fig. 1-3, the laser cutting jig 100 for metal thin film sheets of the present invention comprises a fixing base plate 10, a plate positioning plate 20, an electromagnet 30, a control portion 40, a laser 60, and other components. A laser 60 is disposed above the laser cutting fixture 100. The fixed base plate 10 is fixed on a laser equipment workbench through a mounting screw pin 80, the plate positioning plate 20 and the electromagnet 30 are mounted on the fixed base plate 10 through screws 70, and the control part 40 controls the attraction of the electromagnet through the operation switch 41.

Further, the plate positioning plate 20 and the electromagnet 30 are combined into a whole through a mounting screw 70, a groove is machined in a grinding machine integral machining mode, and the thickness and the width of the groove are the same as those of the metal sheet. In use, the metal sheet 50 is placed on the electromagnet 30 and in the recess of the plate positioning plate 20.

Further, the plate positioning plate 20 is a rectangular metal plate, a plurality of circular through holes are formed in the plate, the inner diameter of each through hole is smaller than the outer diameter of the metal film sheet 51, the circular electromagnets 30 are used for being mounted, and the outer diameter of each electromagnet 30 is smaller than the inner diameter of the plate positioning plate 20. The number of the electromagnets 30 is set according to the size of the plate and the size of the cutting workpiece, and a plurality of the electromagnets 30 can be arranged and are the same as the round holes on the plate positioning plate 20. The plate positioning plate 20 and the electromagnet 30 are integrally processed.

Further, the plate positioning plate 20 and the electromagnet 30 are integrally machined, and are combined into a whole through the mounting screw 70, so that a groove with the same thickness and width as the metal sheet 50 is machined, and when the plate positioning plate is used, the metal sheet 50 is placed on the electromagnet 30 and in the groove of the plate positioning plate 20. The operating voltage of the electromagnet is DC 12V.

The utility model discloses a theory of operation and working process:

as shown in fig. 1, this figure is a laser cutting jig diagram only. As shown in fig. 2, which is a schematic view of an assembly structure of the laser cutting jig and the metal sheet.

The laser cutting fixture 100 for the metal thin film sheet comprises a fixed base plate 10, a plate positioning plate 20, an electromagnet 30 and a control part 40, wherein the fixed base plate 10 is installed on a laser equipment workbench, the plate positioning plate 20 and the electromagnet 30 are integrally processed after being combined into a whole through a mounting screw 70, a groove plane with the same thickness as that of a metal thin plate 50 is processed, the metal thin plate 50 is placed into the groove plane during laser cutting, an operation switch 41 of the control part 40 is pressed down, the electromagnet 30 is electrified to generate magnetism, so that the metal thin plate 50 is firmly attracted and positioned on the fixture, the integrally processed groove plane can ensure the surface flatness of the metal thin plate 50, the fixture can be quickly installed and positioned, and the laser cutting machining precision is effectively ensured. The attraction and the positioning of the electromagnet 30 ensure that the metal film sheet 51 can not generate deformation under the high-speed and high-pressure gas purging, and the possibility of generating burrs after the metal film sheet 51 is separated from the metal sheet 50 instantly at the arc-closing end of the laser cutting is avoided.

Taking cutting a circular metal thin film as an example, fig. 3 is a schematic diagram of laser cutting. The utility model discloses mainly be with sheet metal 50, place on panel locating plate 20, press running switch 41 and make electro-magnet 30 get electricity and produce magnetism, firmly fix a position sheet metal, laser instrument 60 carries out laser cutting work according to the procedure of setting for, and the back is accomplished to the laser cutting procedure, presses running switch 41 again, makes electro-magnet 30 lose the electricity, and the leftover bits that will cut sheet metal 50 after accomplishing again take off from anchor clamps, accomplishes whole laser cutting work. The quantity of the electromagnets 30 is set according to the size of the plate and the size of the cut workpiece, a plurality of electromagnets 30 can be arranged, a plurality of workpieces can be processed at one time through laser cutting programming, and the cutting efficiency is greatly improved.

When laser irradiates the surface of the metal sheet, the material is rapidly melted and evaporated to form holes, and the melted waste residue is blown away by matching with auxiliary gas along with the movement of the light beam relative to the material, so that the holes continuously form slits with narrow wide bands, and finally the cutting of the product is finished.

The utility model discloses utilize the electro-magnet circular telegram to produce magnetic force, actuation metal material's theory of operation under the actuation of electro-magnet for the metal film piece can firmly fix a position at the laser cutting in-process, and the plane degree after the panel installation has been guaranteed to panel locating plate and the whole recess processing structure of electro-magnet, and the installation is simple, and the location is reliable, and work efficiency is high. Through the laser cutting clamp with the structural design, the metal sheet can be prevented from being displaced and deformed in the laser cutting process, the precision of laser cutting is guaranteed, and burrs are prevented from being generated.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A laser cutting fixture for metal thin film sheets, comprising a laser (60), wherein the laser (60) is arranged above the laser cutting fixture (100), and the laser cutting fixture is characterized in that: laser cutting anchor clamps (100) still include PMKD (10), panel locating plate (20) and electro-magnet (30), PMKD (10) are fixed on the laser equipment workstation through installation screw round pin (80), panel locating plate (20) and electro-magnet (30) make up into an organic whole and install on PMKD (10) through screw (70), are provided with running switch (41) among the control part, the actuation of electro-magnet (30) is controlled through running switch (41) to the control part.

2. The laser cutting jig for metal thin film sheet as claimed in claim 1, wherein: the plate positioning plate (20) and the electromagnet (30) are integrally processed into a groove, and the thickness and the width of the groove are the same as those of the metal sheet.

3. The laser cutting jig for metal thin film sheet as claimed in claim 1, wherein:

the plate positioning plate (20) is a rectangular metal plate, a plurality of circular through holes are processed on the rectangular metal plate, the inner diameter of each circular through hole is smaller than the outer diameter of the metal film sheet (51), and the circular through holes are used for mounting the circular electromagnets (30).

4. The laser cutting jig for metal thin film sheet as claimed in claim 1, wherein:

the outer diameter of the electromagnet (30) is smaller than the inner diameter of the plate positioning plate (20).

5. The laser cutting jig for metal thin film sheet as claimed in claim 1, wherein:

the number of the electromagnets (30) is set to be the same as that of the round holes on the plate positioning plate (20).

6. The laser cutting jig for metal thin film sheet as claimed in claim 1, wherein:

the operating voltage of the electromagnet is DC 12V.