Workpiece surface roughening treatment method and system

Abstract

The invention discloses a workpiece surface texturing treatment method and system.The workpiece surface texturing treatment method is applied to the workpiece surface texturing treatment system.The workpiece surface texturing treatment system comprises electronic equipment, a laser emitting device, a polygon prism device and a focusing lens device, and the polygon prism device comprises a first driving device and a polygon prism; and the focusing lens device comprises a second driving device and a focusing lens. Controlling a second driving device to move the focusing lens to a preset distance from the processing workpiece; controlling the laser emitting device to emit laser to the polygon prism; and the first driving device is controlled to drive the polygon prism to rotate, and the laser emitted by the laser emitting device is reflected to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygon prism to different positions of the surface of the machined workpiece. According to the method, the workpiece surface roughening treatment efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the field of laser technology, and in particular to a method and system for roughening a workpiece surface. Background Art

[0002] New energy batteries are arranged in a display style when they are assembled in a car. In order to prevent abnormal discharge caused by battery detachment after long-term use, a layer of blue paint is applied on the surface of the battery. The paint is used to isolate the battery for insulation. During transportation or long-term use of the battery, the insulating layer will be damaged, resulting in abnormal discharge of the battery, affecting the safety of use. Therefore, it is necessary to further improve the protective performance of the insulating layer. The insulation and the battery cell are bonded by a layer of adhesive. The adhesive will be modified during the long-term use of the battery, resulting in a weakened fit between the insulating layer and the battery cell, making the insulating layer ineffective. Therefore, it is necessary to increase the adhesion between the adhesive and the battery cell. The formation of roughness will increase the surface area of ​​the metal, so that the metal surface obtains multiple anchor nodes, thereby increasing the bonding area between the adhesive and the metal surface and further improving the adhesion. Therefore, in order to make the insulating layer have a longer-lasting adhesion, the battery surface needs to be roughened. However, the efficiency of the existing technology for roughening the surface of the battery cell is low. Summary of the invention

[0003] The embodiment of the present application provides a method for roughening the surface of a workpiece, which can improve the efficiency of roughening the surface of the workpiece.

[0004] In a first aspect, the present application provides a workpiece surface texturing treatment method, which is applied to a workpiece surface texturing treatment system, wherein the workpiece surface texturing treatment system comprises an electronic device, a laser emitting device, a polygonal prism device and a focusing lens device, wherein the polygonal prism device comprises a first driving device and a polygonal prism, wherein the first driving device is used to drive the polygonal prism to rotate, wherein the focusing lens device comprises a second driving device and a focusing lens, wherein the second driving device is used to drive the focusing lens to move, and wherein the workpiece surface texturing treatment method;

[0005] Controlling the second driving device to move the focusing lens to a preset distance from a workpiece;

[0006] Controlling the laser emitting device to emit laser light toward the polygonal mirror;

[0007] The first driving device is controlled to drive the polygonal mirror to rotate, and the laser emitted by the laser emitting device is reflected to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal mirror at different positions on the surface of the workpiece.

[0008] Optionally, controlling the first driving device to drive the polygonal mirror to rotate includes:

[0009] Determining the laser frequency of the laser emitting device;

[0010] Obtaining the spot size of the light spot formed on the surface of the workpiece after being refracted by the focusing lens;

[0011] Determine the spot spacing based on the preset spot overlap rate and spot size;

[0012] Determining a laser scanning speed based on the spot spacing and the laser frequency;

[0013] Determining the rotational angular velocity of the polygonal mirror based on the laser scanning speed and the focal length of the focusing lens;

[0014] The first driving device is controlled to drive the polygonal mirror to rotate at the rotation angular velocity.

[0015] Optionally, the workpiece surface texturing processing system further includes a multi-dimensional tooling, the multi-dimensional tooling is used to clamp the cylindrical battery core and drive the cylindrical battery core to rotate, the first driving device is controlled to drive the polygonal mirror to rotate, and the laser emitted by the laser emitting device is reflected to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal mirror at different positions on the surface of the processed workpiece, including:

[0016] When the workpiece is a cylindrical battery cell, the multidimensional tooling is controlled to drive the workpiece to rotate around its axis at a preset angular velocity, and the first driving device is controlled to drive the polygonal prism to rotate, so as to reflect the laser emitted by the laser emitting device to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal prism onto the cylindrical surface of the workpiece, thereby forming an array of circular light spots on the cylindrical surface of the workpiece, wherein the array of circular light spots has equal spacing in the horizontal and vertical directions.

[0017] Optionally, the multi-dimensional tooling is also used to drive the square battery core to move horizontally, and the first driving device is controlled to drive the polygonal mirror to rotate, so as to reflect the laser emitted by the laser emitting device to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal mirror at different positions on the surface of the workpiece, including:

[0018] When the workpiece is a square battery cell, the multi-dimensional tooling is controlled to drive the workpiece to move horizontally at a preset linear speed, and the first driving device is controlled to drive the polygonal prism to rotate, so as to reflect the laser emitted by the laser emitting device to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal prism on the surface of the workpiece, thereby forming an array of square light spots on the surface of the workpiece, wherein the array of square light spots has equal spacing in the horizontal and vertical directions.

[0019] Optionally, the multidimensional tooling includes a carrier plate, two third vertical plates, a third driving device, a first clamping part and a second clamping part, the two third vertical plates are respectively erected on both side edges of the carrier plate, the first clamping part and the second clamping part are respectively rotatably connected to the side of the two third vertical plates close to each other, the first clamping part and the second clamping part are used to clamp the cylindrical battery cell, and the third driving device is used to drive the first clamping part to rotate, thereby driving the cylindrical battery cell to rotate.

[0020] Optionally, the multi-dimensional tooling includes a horizontal conveyor line, a first vertical plate, a second vertical plate and a horizontal plate, the horizontal plate is located on the horizontal conveyor line, the first vertical plate and the second vertical plate are located on both sides of the horizontal conveyor line, the first vertical plate and the second vertical plate are arranged opposite to each other, and the two side edges of the horizontal plate are respectively connected to the first vertical plate and the second vertical plate, the first vertical plate, the second vertical plate and the horizontal plate are enclosed to form a receiving portion to receive the horizontal conveyor line, the two sides of the carrier plate are respectively detachably connected to the first vertical plate and the second vertical plate, the carrier plate is located above the horizontal plate and is spaced apart, and the horizontal conveyor line is used to drive the horizontal plate to move and drive the square battery cells on the carrier plate to move horizontally.

[0021] Optionally, two sides of the loading plate are detachably connected to the first vertical plate and the second vertical plate via pins respectively.

[0022] Optionally, the third driving device is a driving motor, and the first clamping portion or the second clamping portion is an elastic member.

[0023] Optionally, the workpiece surface texturing processing system includes a refractor, which is used to reflect the light emitted by the laser emitting device to the polygonal mirror.

[0024] In a second aspect, the present application provides a workpiece surface texturing processing system, the workpiece surface texturing processing system comprising an electronic device, a laser emitting device, a polygonal prism device and a focusing lens device, the polygonal prism device comprising a first driving device and a polygonal prism, the first driving device being used to drive the polygonal prism to rotate, the focusing lens device comprising a second driving device and a focusing lens, the second driving device being used to drive the focusing lens to move, and the electronic device being used to execute the workpiece surface texturing processing method described in any one of the first aspects.

[0025] In the present application, compared with the related art, the workpiece surface roughening treatment method of the present application is applied to the workpiece surface roughening treatment system, the workpiece surface roughening treatment system includes electronic equipment, laser emitting device, polygonal mirror device and focusing lens device, the polygonal mirror device includes a first driving device and a polygonal mirror, the first driving device is used to drive the polygonal mirror to rotate, the focusing lens device includes a second driving device and a focusing lens, the second driving device is used to drive the focusing lens to move, the workpiece surface roughening treatment method; control the second driving device to move the focusing lens to a preset distance from the processed workpiece; control the laser emitting device to emit laser to the polygonal mirror; control the first driving device to drive the polygonal mirror to rotate, and reflect the laser emitted by the laser emitting device to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal mirror at different positions on the surface of the processed workpiece. The present application can improve the efficiency of workpiece surface roughening treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a workpiece surface texturing processing system provided in an embodiment of the present application;

[0028] Figure 2 It is a schematic diagram of light path propagation in an embodiment of a workpiece surface texturing processing system provided in an embodiment of the present application;

[0029] Figure 3 It is a structural schematic diagram of a multi-dimensional tooling in one embodiment of a workpiece surface texturing processing system provided in an embodiment of the present application;

[0030] Figure 4 It is a schematic flow chart of an embodiment of a workpiece surface roughening treatment method provided in an embodiment of the present application;

[0031] Figure 5 It is a schematic diagram of a circular light spot formed when a cylindrical battery core is processed by an embodiment of a workpiece surface roughening treatment method provided in an embodiment of the present application;

[0032] Figure 6 It is a schematic diagram of a square light spot formed when processing a square battery cell according to an embodiment of the workpiece surface roughening treatment method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] See also Figure 1-Figure 3The workpiece surface texturing processing system provided in the present application includes an electronic device 20, a laser emitting device 30, a polygonal prism device 40, a focusing lens device 50 and a multidimensional tooling 10. The electronic device 20 is used to control the laser emitting device 30, the polygonal prism device 40, the focusing lens device 50 and the multidimensional tooling 10. The polygonal prism device 40 includes a first driving device and a polygonal prism, the first driving device is used to drive the polygonal prism to rotate, and the focusing lens device 50 includes a second driving device and a focusing lens, and the second driving device is used to drive the focusing lens to move. The first driving device can be a driving motor. The second driving device can be a robotic arm, which can move the focusing lens to a predetermined position. The workpiece surface texturing processing system also includes a refractor, which is used to reflect the light emitted by the laser emitting device 30 to the polygonal prism. Among them, the polygonal prism can be an octagonal prism.

[0037] The incident laser of the laser emitting device 30 is pulsed light with a wavelength of 1064nm and a pulse power of 1000W. The laser controller in the laser emitting device 30 controls the output energy and output mode of the laser.

[0038] In the embodiment of the present application, the vertical incident laser emitted by the laser emitting device 30 is reflected by the refractor in the horizontal direction to the octagonal prism, and the octagonal prism reflects the laser reflected by the refractor to the focusing lens, and the focusing lens refracts the laser reflected by the octagonal prism to the workpiece, forming a light spot on the workpiece. After the point light source emitted by the laser emitting device 30 is output, it reaches the refractor, and after being reflected by the refractor, it reaches the octagonal prism. The octagonal prism reshapes the point light source into a line light source through high-speed rotation. The line light source is focused by the focusing lens and acts on the surface of the workpiece to achieve reciprocating scribing and achieve a roughening effect.

[0039] like Figure 2 As shown, specifically, the vertical incident laser emitted by the laser emitting device 30 is reflected by the refractor in the horizontal direction to the octagonal prism. When the octagonal prism is in the octagonal prism position one, the octagonal prism reflects the laser reflected by the refractor to the focusing lens, and the focusing lens refracts the laser reflected by the octagonal prism into refracted laser one, and the refracted laser one is irradiated onto the processing workpiece to form a light spot on the processing workpiece. When the first driving device drives the polygonal prism to rotate to the octagonal prism position two, the octagonal prism reflects the laser reflected by the refractor to the focusing lens, and the focusing lens refracts the laser reflected by the octagonal prism into refracted laser two, and the refracted laser two is irradiated onto the processing workpiece to form a light spot on the processing workpiece, thereby forming a row of light spots on the processing workpiece.

[0040] In the embodiment of the present application, the processed workpiece may be a cylindrical battery cell and a square battery cell.

[0041] like Figure 3As shown, in the embodiment of the present application, the workpiece surface roughening treatment system also includes a multi-dimensional tooling 10, which is used to clamp the cylindrical battery cell and drive the cylindrical battery cell to rotate. The multi-dimensional tooling 10 includes a first vertical plate 121, a second vertical plate 122, a horizontal plate 120, a carrier plate 125, two third vertical plates 126, a third driving device 127, a first clamping part 123 and a second clamping part 124, the two third vertical plates 126 are respectively erected on the two side edges of the carrier plate 125, the first clamping part 123 and the second clamping part 124 are respectively rotatably connected to the side where the two third vertical plates 126 are close to each other, the first clamping part 123 and the second clamping part 124 are used to clamp the cylindrical battery cell, and the third driving device 127 is used to drive the first clamping part 123 to rotate, driving the cylindrical battery cell to rotate. Specifically, the third driving device 127 is a driving motor. The first clamping part 123 or the second clamping part 124 is an elastic member. For example, the first clamping part 123 is an elastic member, the first clamping part 123 is pressed, the cylindrical battery cell is placed between the first clamping part 123 and the second clamping part 124, and the first clamping part 123 is released, and the first clamping part 123 and the second clamping part 124 clamp the cylindrical battery cell.

[0042] In the embodiment of the present application, the multi-dimensional tooling 10 is also used to drive the horizontal movement of the square battery cell. The multi-dimensional tooling 10 includes a horizontal conveyor line 11, a first vertical plate 121, a second vertical plate 122 and a horizontal plate 120, the horizontal plate 120 is located on the horizontal conveyor line 11, the first vertical plate 121 and the second vertical plate 122 are located on both sides of the horizontal conveyor line 11, the first vertical plate 121 and the second vertical plate 122 are arranged oppositely, the two side edges of the horizontal plate 120 are respectively connected to the first vertical plate 121 and the second vertical plate 122, the first vertical plate 121, the second vertical plate 122 and the horizontal plate 120 are enclosed to form a receiving portion to receive the horizontal conveyor line 11, the two sides of the carrier plate 125 are respectively detachably connected to the first vertical plate 121 and the second vertical plate 122, the carrier plate 125 is located above the horizontal plate 120 and is arranged at intervals, and the horizontal conveyor line 11 is used to drive the horizontal plate 120 to move and drive the square battery cells on the carrier plate 125 to move horizontally. Specifically, the horizontal conveying line 11 drives the horizontal plate 120 to move, thereby driving the square cells on the carrier plate 125 to move horizontally in a direction parallel to the axial direction of the octagonal prism.

[0043] Furthermore, both sides of the carrier plate 125 are detachably connected to the first vertical plate 121 and the second vertical plate 122 through pins 128. Furthermore, the first vertical plate 121 and the second vertical plate 122 are provided with a plurality of pin holes of different heights. When the carrier plate 125 is connected to the pin holes of different heights on the first vertical plate 121 and the second vertical plate 122 through the pins 128, the vertical distance between the carrier plate 125 and the horizontal plate 120 is different. Thus, the height of the carrier plate 125 can be adjusted for different battery cells.

[0044] After the multi-dimensional tooling 10 fixes the workpiece, it translates and rotates the workpiece and makes a flying motion relative to the laser. Under the coordinated motion of the online laser and the multi-dimensional tooling 10, the laser forms an array of etched holes on the surface of the workpiece, covering the entire workpiece, thereby achieving a roughening effect.

[0045] Further, such as Figure 4 As shown, the present application provides a workpiece surface texturing treatment method, which is applied to a workpiece surface texturing treatment system. The workpiece surface texturing treatment system includes an electronic device 20, a laser emitting device 30, a polygonal prism device 40 and a focusing lens device 50. The polygonal prism device includes a first driving device and a polygonal prism. The first driving device is used to drive the polygonal prism to rotate. The focusing lens device 50 includes a second driving device and a focusing lens. The second driving device is used to drive the focusing lens to move. The workpiece surface texturing treatment method;

[0046] 301. Control the second driving device to move the focusing lens to a preset distance from the workpiece.

[0047] In the embodiment of the present application, the function of the multi-dimensional tooling 10 is selected according to the type of workpiece to be processed. When the workpiece to be processed is a cylindrical battery cell, the first clamping portion 123 is pressed, and the cylindrical battery cell is placed between the first clamping portion 123 and the second clamping portion 124, and the first clamping portion 123 is released, and the first clamping portion 123 and the second clamping portion 124 clamp the cylindrical battery cell. When the workpiece to be processed is a square battery cell, the carrier plate 125 is adjusted to a suitable height, and the square battery cell is placed on the carrier plate 125.

[0048] In the embodiment of the present application, the workpiece surface texturing treatment system includes a rangefinder. Before processing, the rangefinder measures the distance between the processed workpiece and the focusing lens, and the second driving device drives the lifting motor to adjust the relative position of the processed workpiece and the focusing lens so that the focus falls on the workpiece surface. Specifically, the preset distance is the focal length F of the focusing lens.

[0049] 302. Control the laser emitting device to emit laser toward the polygonal mirror.

[0050] In the embodiment of the present application, the incident laser of the laser emitting device 30 is pulsed light with a wavelength of 1064nm and a pulse power of 1000W, and the laser controller of the laser emitting device 30 controls the output energy and output mode of the laser. The scanning line speed of the optical path system of the workpiece surface texturing treatment system can reach 170000mm / s.

[0051] 303. Control the first driving device to drive the polygonal mirror to rotate, and reflect the laser emitted by the laser emitting device to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal mirror to different positions on the surface of the workpiece.

[0052] In the embodiment of the present application, the focusing lens irradiates the light reflected by the polygonal mirror onto different positions on the surface of the workpiece, forming a light spot on the workpiece and forming etching holes on the surface of the workpiece, with one light spot corresponding to one etching hole.

[0053] In the embodiment of the present application, controlling the first driving device to drive the polygonal mirror to rotate, and reflecting the laser emitted by the laser emitting device to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal mirror to different positions on the surface of the workpiece, includes:

[0054] (1) The laser frequency of the laser emitting device 30 is determined.

[0055] In the embodiment of the present application, the laser frequency of the laser emitting device 30 is determined based on the preset texturing depth. The preset texturing depth is manually determined and is used to represent the depth of the etched hole formed on the processed workpiece. The mapping relationship between the laser frequency f and the preset texturing depth can be set according to the specific situation.

[0056] (2) Obtain the spot size of the light spot formed on the surface of the workpiece after being refracted by the focusing lens.

[0057] In the present application embodiment, Figure 5 and Figure 6 As shown, when the workpiece is a cylindrical battery cell, the light spot formed on the surface of the workpiece is a circular light spot, and the light spot size is the light spot diameter D of the light spot. When the workpiece is a square battery cell, the light spot formed on the surface of the workpiece is a square light spot, and the light spot size is the light spot side length D of the light spot.

[0058] (3) Determine the spot spacing based on the preset spot overlap rate and spot size.

[0059] In the present application embodiment, Figure 5 and Figure 6 As shown, when the workpiece is a cylindrical battery cell, the light spot formed on the surface of the workpiece is a circular light spot, the spot size is the spot diameter D, the spot overlap rate η = ((spot diameter D-spot spacing d) / spot diameter D)) × 100%, and the required spot spacing d can be calculated. When the workpiece is a square battery cell, the light spot formed on the surface of the workpiece is a square light spot, the spot size is the spot side length D, the spot overlap rate η = ((spot side length D-spot spacing d) / spot side length D)) × 100%, and the required spot spacing d can be calculated.

[0060] (4) Determine the laser scanning speed based on the spot spacing and laser frequency.

[0061] In the embodiment of the present application, the required scanning speed can be calculated based on the spot spacing d and the laser frequency f. The laser scanning speed V is the product of the spot spacing d and the laser frequency f, and satisfies the formula: V=df.

[0062] (5) The rotational angular velocity of the polygonal mirror is determined based on the laser scanning speed and the focal length of the focusing lens.

[0063] In the embodiment of the present application, the ratio of the laser scanning speed and the focal length of the focusing lens is determined as the rotational angular velocity ω of the polygonal prism, which satisfies the formula: ω=V / F. Therefore, the rotational speed ω of the octagonal prism can be obtained.

[0064] (6) Control the first driving device to drive the polygonal mirror to rotate at a rotational angular velocity.

[0065] In the embodiment of the present application, when the workpiece to be processed is a cylindrical battery cell, the third driving device 127 is controlled to drive the workpiece to rotate around its axis at a preset angular velocity, and the first driving device is controlled to drive the polygonal prism to rotate, so that the laser emitted by the laser emitting device 30 is reflected to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal prism onto the cylindrical surface of the workpiece, forming an array of circular light spots on the cylindrical surface of the workpiece, wherein the array of circular light spots has equal spacing in the horizontal and vertical directions.

[0066] like Figure 5 As shown, a cylindrical battery cell is provided as a sample, the sample has a diameter of 46 mm, a length of 95 mm, the material is nickel-plated steel, and the steel thickness is 2 mm.

[0067] Clamp the cylindrical battery cell so that the battery cell axis and the center of the clamping jaws are on the same axis;

[0068] The rangefinder measures the relative distance to the battery cell, compares it with the theoretical value, and feeds the position compensation data back to the lifting driver of the first driving device to drive the lifting motor, thereby driving the focusing lens of the scanning head to move to the theoretical coordinates;

[0069] The spot diameter D is calculated based on the selected focusing lens.

[0070] The spot spacing is determined based on the preset spot overlap rate and spot size. When the workpiece is a cylindrical battery cell, the spot formed on the surface of the workpiece is a circular spot, the spot size is the spot diameter D of the spot, and the spot overlap rate η = ((spot diameter D-spot spacing d) / spot diameter D)) × 100%, and the required spot spacing d can be calculated.

[0071] The required scanning speed can be calculated based on the spot spacing d and the laser frequency f. The laser scanning speed V is the product of the spot spacing d and the laser frequency f, satisfying the formula: V=df.

[0072] The ratio of the laser scanning speed and the focal length of the focusing lens is determined as the rotational angular velocity ω of the polygonal prism, which satisfies the formula: ω=V / F. Therefore, the rotational speed ω of the octagonal prism can be obtained.

[0073] The first driving device is controlled to drive the polygonal mirror to rotate at a rotational angular velocity.

[0074] According to the laser power P, laser pulse width t and laser frequency f of the incident laser, the third driving device 127 is set to drive the processing workpiece to rotate around its axial direction. The adjustment of the rotating tooling speed ω0 is determined according to the longitudinal point distribution state of the circumferential surface. When the longitudinal point spacing L<transverse point spacing d in the circular light spots arranged in the array, the rotating tooling speed ω0 increases. When the longitudinal point spacing L>transverse point spacing d, the rotating tooling speed ω0 decreases. The rotating tooling speed ω0 is adjusted until L=d, and the tooling rotation speed V0 at this time is determined as the preset angular velocity. The third driving device 127 is controlled to drive the processing workpiece to rotate around its axial direction at a preset angular velocity. The circular light spots arranged in the array are equally spaced in the transverse and longitudinal directions.

[0075] In an embodiment of the present application, when the workpiece to be processed is a square battery cell, the multi-dimensional tooling 10 is controlled to drive the workpiece to move horizontally at a preset linear speed, and the first driving device is controlled to drive the polygonal prism to rotate, so that the laser emitted by the laser emitting device 30 is reflected to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal prism onto the surface of the workpiece, forming an array of square light spots on the surface of the workpiece, wherein the square light spots arranged in the array are equally spaced in the horizontal and vertical directions.

[0076] like Figure 6 As shown, a square battery cell is provided as a sample, the sample is 160 mm long, 115 mm wide, 48 mm high, the material is 3001 aluminum, and the material thickness is 0.5 mm.

[0077] Place the square battery cell on the carrier plate 125 of the multi-dimensional tooling 10 and clamp the battery cell.

[0078] The rangefinder measures the relative distance to the battery cell, compares it with the theoretical value, and feeds back the position compensation data to the lifting driver of the first driving device to drive the lifting motor, thereby driving the focusing lens of the scanning head to move to the theoretical coordinates.

[0079] The spot side length D is calculated based on the selected focusing lens. When the workpiece is a square battery cell, the spot formed on the surface of the workpiece is a square spot, and the spot size is the spot side length D of the spot.

[0080] The spot spacing is determined based on the preset spot overlap rate and spot size. When the workpiece is a square battery cell, the spot formed on the surface of the workpiece is a square spot, the spot size is the spot side length D of the spot, the spot overlap rate η = ((spot side length D-spot spacing d) / spot side length D)) × 100%, and the required spot spacing d can be calculated.

[0081] The required scanning speed can be calculated based on the spot spacing d and the laser frequency f. The laser scanning speed V is the product of the spot spacing d and the laser frequency f, satisfying the formula: V=df.

[0082] The ratio of the laser scanning speed and the focal length of the focusing lens is determined as the rotational angular velocity ω of the polygonal prism, which satisfies the formula: ω=V / F. Therefore, the rotational speed ω of the octagonal prism can be obtained.

[0083] The first driving device is controlled to drive the polygonal mirror to rotate at a rotational angular velocity.

[0084] According to the laser power P, laser pulse width t and laser frequency f of the incident laser, the tooling translation speed V1 of the multi-dimensional tooling 10 driving the workpiece to move is set. The adjustment of the tooling translation speed V1 is determined according to the longitudinal point distribution state of the circumferential surface. When the longitudinal point spacing L<lateral point spacing d in the circular light spots arranged in the array, the tooling translation speed V1 increases. When the longitudinal point spacing L>lateral point spacing d, the tooling translation speed V1 decreases. The tooling translation speed V1 is adjusted until L=d, and the tooling translation speed V1 at this time is determined as the preset linear speed. Control the multi-dimensional tooling 10 to drive the workpiece to translate at the preset linear speed. The square light spots arranged in the array have equal spacing in the horizontal and vertical directions.

[0085] Compared with the related art, the workpiece surface roughening treatment method is applied to the workpiece surface roughening treatment system, the workpiece surface roughening treatment system includes electronic equipment, laser emitting device, polygonal mirror device and focusing lens device, the polygonal mirror device includes a first driving device and a polygonal mirror, the focusing lens device includes a second driving device and a focusing lens, the workpiece surface roughening treatment method; control the second driving device to move the focusing lens to a preset distance from the processed workpiece; control the laser emitting device to emit laser to the polygonal mirror; control the first driving device to drive the polygonal mirror to rotate, and reflect the laser emitted by the laser emitting device to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal mirror at different positions on the surface of the processed workpiece. The present application can improve the efficiency of workpiece surface roughening treatment.

[0086] The above is a detailed introduction to a workpiece surface roughening treatment method and system provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

[0087] It should be noted that when the above embodiments of the present application are applied to specific products or technologies, the relevant data of the user is involved, and the user's permission or consent is required, and the collection, use and processing of the relevant data must comply with relevant laws, regulations and standards.

Claims

1. A method for roughening a workpiece surface, characterized in that: Applicable to a workpiece surface texturing system, the workpiece surface texturing system comprises an electronic device, a laser emitting device, a polygonal prism device and a focusing lens device, the polygonal prism device comprises a first driving device and a polygonal prism, the first driving device is used to drive the polygonal prism to rotate, the focusing lens device comprises a second driving device and a focusing lens, the second driving device is used to drive the focusing lens to move, and the workpiece surface texturing method; Controlling the second driving device to move the focusing lens to a preset distance from a workpiece; Controlling the laser emitting device to emit laser light toward the polygonal mirror; The first driving device is controlled to drive the polygonal mirror to rotate, and the laser emitted by the laser emitting device is reflected to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal mirror at different positions on the surface of the workpiece.

2. The workpiece surface roughening treatment method according to claim 1, characterized in that: The controlling the first driving device to drive the polygonal mirror to rotate comprises: Determining the laser frequency of the laser emitting device; Obtaining the spot size of the light spot formed on the surface of the workpiece after being refracted by the focusing lens; Determine the spot spacing based on the preset spot overlap rate and spot size; Determining a laser scanning speed based on the spot spacing and the laser frequency; Determining the rotational angular velocity of the polygonal mirror based on the laser scanning speed and the focal length of the focusing lens; The first driving device is controlled to drive the polygonal mirror to rotate at the rotation angular velocity.

3. The workpiece surface roughening treatment method according to claim 1, characterized in that: The workpiece surface texturing processing system also includes a multi-dimensional tooling, which is used to clamp the cylindrical battery core and drive the cylindrical battery core to rotate. The first driving device is controlled to drive the polygonal mirror to rotate, and the laser emitted by the laser emitting device is reflected to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal mirror at different positions on the surface of the processed workpiece, including: When the workpiece is a cylindrical battery cell, the multidimensional tooling is controlled to drive the workpiece to rotate around its axis at a preset angular velocity, and the first driving device is controlled to drive the polygonal prism to rotate, so as to reflect the laser emitted by the laser emitting device to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal prism onto the cylindrical surface of the workpiece, thereby forming an array of circular light spots on the cylindrical surface of the workpiece, wherein the array of circular light spots has equal spacing in the horizontal and vertical directions.

4. The workpiece surface roughening treatment method according to claim 3, characterized in that: The multi-dimensional tooling is also used to drive the square battery core to move horizontally, and the first driving device is controlled to drive the polygonal mirror to rotate, so as to reflect the laser emitted by the laser emitting device to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal mirror at different positions on the surface of the workpiece, including: When the workpiece is a square battery cell, the multi-dimensional tooling is controlled to drive the workpiece to move horizontally at a preset linear speed, and the first driving device is controlled to drive the polygonal prism to rotate, so as to reflect the laser emitted by the laser emitting device to the focusing lens at different angles, so that the focusing lens irradiates the light reflected by the polygonal prism on the surface of the workpiece, thereby forming an array of square light spots on the surface of the workpiece, wherein the array of square light spots has equal spacing in the horizontal and vertical directions.

5. The workpiece surface roughening treatment method according to claim 4, characterized in that: The multi-dimensional tooling includes a carrier plate, two third vertical plates, a third driving device, a first clamping part and a second clamping part. The two third vertical plates are respectively erected on the two side edges of the carrier plate, and the first clamping part and the second clamping part are respectively rotatably connected to the side of the two third vertical plates close to each other. The first clamping part and the second clamping part are used to clamp the cylindrical battery cell, and the third driving device is used to drive the first clamping part to rotate, thereby driving the cylindrical battery cell to rotate.

6. The workpiece surface roughening treatment method according to claim 5, characterized in that: The multi-dimensional tooling includes a horizontal conveyor line, a first vertical plate, a second vertical plate and a horizontal plate, the horizontal plate is located on the horizontal conveyor line, the first vertical plate and the second vertical plate are located on both sides of the horizontal conveyor line, the first vertical plate and the second vertical plate are arranged opposite to each other, the two side edges of the horizontal plate are respectively connected to the first vertical plate and the second vertical plate, the first vertical plate, the second vertical plate and the horizontal plate are enclosed to form a receiving portion to receive the horizontal conveyor line, the two sides of the carrier plate are respectively detachably connected to the first vertical plate and the second vertical plate, the carrier plate is located above the horizontal plate and is arranged at intervals, and the horizontal conveyor line is used to drive the horizontal plate to move and drive the square battery cells on the carrier plate to move horizontally.

7. The workpiece surface roughening treatment method according to claim 6, characterized in that: The two sides of the loading plate are detachably connected to the first vertical plate and the second vertical plate through pins respectively.

8. The workpiece surface roughening treatment method according to claim 6, characterized in that: The third driving device is a driving motor, and the first clamping portion or the second clamping portion is an elastic member.

9. The workpiece surface roughening treatment method according to claim 1, characterized in that: The workpiece surface texturing processing system comprises a refractor, which is used to reflect the light emitted by the laser emitting device to the polygonal mirror.

10. A workpiece surface texturing system, characterized in that: The workpiece surface texturing processing system includes an electronic device, a laser emitting device, a polygonal prism device and a focusing lens device, the polygonal prism device includes a first driving device and a polygonal prism, the first driving device is used to drive the polygonal prism to rotate, the focusing lens device includes a second driving device and a focusing lens, the second driving device is used to drive the focusing lens to move, and the electronic device is used to execute the workpiece surface texturing processing method described in any one of claims 1 to 9.

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