Local cutting method for super-thick water gap of aluminum die casting and aluminum die casting

Abstract

The invention provides a local cutting method for an ultra-thick water gap of an aluminum die casting and the aluminum die casting. The local cutting method for the ultra-thick water gap of the aluminum die casting comprises the following steps that the aluminum die casting is provided; a cutting loop line area is arranged at the joint of the die-casting body and the imitated rectangular water gap, and the width of the cutting loop line area is 1.2 mm; the rotating vibration cutting part is controlled to rotate the aluminum die casting, the double-shaft movement laser part is synchronously controlled to emit laser beams to conduct pre-cutting operation along the cutting loop line as the path, a laser pre-cutting groove is obtained, and the power of the laser beams is smaller than 1.2 kw; the rotary vibration cutting part is controlled to output a dynamic source to the vibration cutting dynamic source intervention area, and the frequency of the vibration cutting dynamic source is smaller than 20 Hz; a rotary vibration cutting piece is controlled to rotate the aluminum die casting, a double-shaft movement laser piece is synchronously controlled to emit laser beams to conduct cutting operation along the vibration cutting crack groove serving as the path, and a laser cutting groove is obtained; and the steps S140-S150 are repeated till the die-casting body and the imitated rectangular water gap are separated with the laser cutting groove or the vibration cutting crack groove as the boundary line.

Description

Technical Field

[0001] The invention relates to the technical field of laser and vibration cutting, and in particular to a method for partially cutting an ultra-thick nozzle of an aluminum die casting and the aluminum die casting. Background Art

[0002] Aluminum die-casting parts, such as the electric control box of new energy vehicles, electric drive box and exhaust valves of hybrid vehicle engines, are all made by aluminum die-casting.

[0003] In the die-casting process, the aluminum liquid needs to be poured into the mold cavity through the pouring die, which will inevitably produce a nozzle, which is connected to the main structure of the product and needs to be removed when the product is finished. Specifically, for thinner nozzles (i.e., thickness less than or equal to 3mm), nozzle shearing is generally adopted, including nozzle mold shearing or hydraulic shearing. For medium-sized nozzles (i.e., thickness of 3.5mm-5mm), sawing lines are generally made at the pre-cutting position, and then the nozzle is removed by vibration cutting.

[0004] However, with the rapid development of new energy vehicles, the box or shell structure of its core components has higher requirements for surface flatness and surface performance consistency, and the number of nozzles is required to be less and less, while the requirements for the pouring of aluminum liquid are getting higher and higher, which will also lead to an increase in the thickness of the nozzle, even reaching (6mm-8mm). Although CNC machine tools are currently used to cut nozzles on the market, the use of CNC machine tools is likely to lead to high processing costs for products.

[0005] Furthermore, when there is a complex curved surface structure at the nozzle, higher matching requirements are put forward in terms of fixture design and CNC tool, which makes the use of CNC machine tools to cut ultra-thick nozzles subject to certain restrictions.

[0006] Therefore, the problem of ultra-thick nozzle cutting caused by the development and matching of new energy electronic control boxes, electric drive boxes and exhaust valves for hybrid vehicle engines needs to be solved urgently. Summary of the invention

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for local cutting of ultra-thick nozzles of aluminum die-castings and aluminum die-castings that can remove and separate ultra-thick nozzles, simultaneously reduce the processing cost of nozzle removal of aluminum die-castings, and effectively replace the traditional nozzle removal method.

[0008] The objective of the present invention is achieved through the following technical solutions: A method for partially cutting an ultra-thick nozzle of an aluminum die casting comprises the following steps: S110: providing an aluminum die-casting, wherein the aluminum die-casting comprises a die-casting body and an imitation rectangular nozzle, wherein the thinnest thickness of the imitation rectangular nozzle is greater than 6 mm; S120: a cutting line area is provided at the connection between the die casting body and the imitation rectangular nozzle, the width of the cutting line area is 1.2 mm, a cutting line is provided in the middle of the cutting line area, and a vibration shearing source intervention area is provided in the area of ​​the imitation rectangular nozzle away from the cutting line, and the vibration shearing source intervention area is clamped by rotating the vibration cutting member; S130: Control the rotating vibration cutting part to rotate the aluminum die casting, and synchronously control the dual-axis motion laser part to emit a laser beam to perform a pre-cutting operation along the cutting ring line as a path to obtain a laser pre-cut groove, wherein the laser beam power is less than 1.2kw; S140: Control the rotating vibration cutting member to output a dynamic source to the vibration cutting dynamic source intervention area to form a vibration cutting crack groove at the bottom of the laser pre-cut groove, and the frequency of the vibration cutting dynamic source is less than 20 Hz; S150: Control the rotating vibration cutting component to rotate the aluminum die casting, and synchronously control the dual-axis motion laser component to emit a laser beam to perform a cutting operation along the vibration cutting groove as a path to obtain a laser cutting groove; S160: Determine whether the die-cast body is separated from the imitation rectangular nozzle; if not, repeat steps S140-S150 until the die-cast body is separated from the imitation rectangular nozzle with the laser cutting groove or the vibration cutting groove as the boundary.

[0009] In one embodiment, in step S150, the step of the dual-axis motion laser component emitting a laser beam along the vibration-cut crack groove as a path to perform a cutting operation includes: Capturing an image of the aluminum die casting on which the vibration-cut crack groove is formed, so as to obtain vibration-cut crack groove image information corresponding to the vibration-cut crack groove; Performing image processing and fitting according to the vibration-cut crack groove image information to obtain a crack groove contour image corresponding to the vibration-cut crack groove; Calculating according to the crack contour image to obtain a laser cutting path; wherein the laser cutting path is the center line of the crack contour; Control the dual-axis motion laser component to emit a laser beam to perform cutting operations along a laser cutting path, In one embodiment, the power of the laser beam emitted by the dual-axis motion laser component in step S150 is less than the power of the laser beam emitted by the dual-axis motion laser component in step S130.

[0010] In one embodiment, after step S130 and before step S140, the method for partially cutting an ultra-thick nozzle of an aluminum die casting further includes: The aluminum die casting is subjected to a cooling operation.

[0011] In one of the embodiments, the specific steps of cooling the aluminum die casting are: using compressed air and atomized coolant to mix and spray the aluminum die casting, and the time of the mixed spraying is less than 15s.

[0012] In one of the embodiments, in step S120, the rotating vibration cutting member clamps the vibration cutting source intervention area using a pneumatic clamping mechanism, and the vibration cutting source intervention area is provided with an anti-slip clamping surface, and the roughness of the anti-slip clamping surface is Ra12.5μm.

[0013] In one embodiment, after step S110 and before step S120, the method for partially cutting an ultra-thick nozzle of an aluminum die casting further includes: Cleaning the release agent on the outer surface of the aluminum die casting; The aluminum die casting after the cleaning operation is sprayed with a nano-aluminum oxide light-absorbing coating.

[0014] In one embodiment, the thickness of the nano-aluminum oxide light-absorbing coating ranges from 2 μm to 10 μm.

[0015] In one embodiment, after step S160, the method for partially cutting an ultra-thick nozzle of an aluminum die casting further includes: Scanning the actual cross section formed by the die-cast body by a CCD camera to obtain a three-dimensional image of the actual cross section; Comparing the actual cross-sectional three-dimensional image with the reference end face three-dimensional image to obtain comparison data; The grinding equipment is controlled according to the comparison data to perform grinding operation on the actual cross section.

[0016] An aluminum die casting is obtained by using the aluminum die casting super-thick nozzle local cutting method described in any of the above embodiments.

[0017] Compared with the prior art, the present invention has at least the following advantages: 1. The present invention discloses a method for partially cutting an ultra-thick nozzle of an aluminum die-casting. First, an aluminum die-casting is provided; then, a low-power laser beam is used to perform a pre-cutting operation along a cutting loop as a path to obtain a laser pre-cut groove; then, a low-frequency dynamic source is output to the vibration-cutting dynamic source intervention area by rotating the vibration-cutting member, so that a vibration-cutting crack groove is formed at the bottom of the laser pre-cut groove; then, a low-power laser beam is used to cut the vibration-cutting crack groove, and the above-mentioned operation steps are repeated until the die-casting body and the imitation rectangular nozzle are separated by the laser cutting groove or the vibration-cutting crack groove as the boundary. By adopting a processing method combining low-power laser beam cutting with low-frequency vibration cutting, the ultra-thick nozzle can be cut step by step to ensure that the ultra-thick nozzle is effectively removed.

[0018] 2. Compared with the traditional CNC machine tool cutting method of water outlet, the cutting method of the present application adopts the method of first laser cutting to form a laser pre-cut groove, then vibration cutting to form a vibration cut groove, and then laser cutting the vibration cut groove. It should be noted that the local heating cutting method of laser cutting can effectively cut the product, and can simultaneously reduce the processing cost of the water outlet of aluminum die-casting parts while meeting the surface flatness and surface performance consistency requirements of the product.

[0019] 3. When the water outlet has a complex curved surface to be removed, the cutting method of the present application does not require the design of a complex fixture structure, nor does it require higher requirements for CNC tools. It can be done by rotating the vibration cutting piece to clamp the vibration cutting source intervention area, and by adopting an alternating combination of laser cutting and vibration cutting processing of aluminum die-casting parts, the removal and separation processing of the ultra-thick water outlet is completed, avoiding the problem of higher matching requirements for fixture design and CNC tools when processing water outlets with complex curved surface structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 Flow chart of a method for partially cutting an ultra-thick nozzle of an aluminum die casting in one embodiment; Figure 2 A schematic diagram of the structure of an aluminum die casting in one embodiment; Figure 3 A schematic diagram of the structure of a rotating vibration cutting member in one embodiment; Figure 4 for Figure 3 A partial enlarged view of the rotating vibrating cutting member at A shown; Figure numerals: aluminum die casting 10; die casting body 100, imitation rectangular water nozzle 200; rotating vibration cutting part 20; frame 300; mounting platform 310; material collection area 301; vibration source output assembly 400; rotating clamping assembly 500; rotating driving member 510; clamping frame 520; hollow area 5201; clamping base 5210; telescopic driving member 530; material collection cart 600. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the content of the invention of the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] The present invention provides a method for partially cutting an ultra-thick nozzle of an aluminum die-casting, comprising the following steps: S110: providing an aluminum die-casting, wherein the aluminum die-casting comprises a die-casting body and an imitation rectangular nozzle, wherein the thinnest thickness of the imitation rectangular nozzle is greater than 6 mm; S120: setting a cutting loop area at the connection between the die-casting body and the imitation rectangular nozzle, wherein the width of the cutting loop area is 1.2 mm, a cutting loop is set in the middle of the cutting loop area, and a vibration-cutting source intervention area is set in an area of ​​the imitation rectangular nozzle away from the cutting loop, and the vibration-cutting source intervention area is clamped by a rotating vibration-cutting member; S130: controlling the rotating vibration-cutting member to rotate the aluminum die-casting, and synchronously controlling the dual-axis motion laser member to emit The laser beam performs a pre-cutting operation along the cutting loop as a path to obtain a laser pre-cut groove, and the power of the laser beam is less than 1.2 kW; S140: Control the rotating vibration cutting component to output a power source to the vibration cutting source intervention area to form a vibration cutting crack groove at the bottom of the laser pre-cut groove, and the frequency of the vibration cutting source is less than 20 Hz; S150: Control the rotating vibration cutting component to rotate the aluminum die-casting component, and synchronously control the dual-axis motion laser component to emit a laser beam to perform a cutting operation along the vibration cutting crack groove as a path to obtain a laser cutting groove; S160: Repeat steps S140-S150 until the die-casting body and the imitation rectangular water outlet are separated by the laser cutting groove or the vibration cutting crack groove as the boundary.

[0026] See also Figure 1 , which is a flow chart of a method for partially cutting an ultra-thick nozzle of an aluminum die casting according to an embodiment of the present disclosure. The method for partially cutting an ultra-thick nozzle of an aluminum die casting includes part or all of the following steps.

[0027] S110: Provide an aluminum die-casting, including a die-casting body and an imitation rectangular nozzle, wherein the thinnest thickness of the imitation rectangular nozzle is greater than 6 mm.

[0028] In this embodiment, an aluminum die casting is provided, and the aluminum die casting includes a die casting body and an imitation rectangular nozzle, and the thinnest thickness of the imitation rectangular nozzle is greater than 6mm. Furthermore, the step of providing the aluminum die casting includes: firstly injecting aluminum liquid into the cavity of the die casting mold, and then performing the pressure holding, cooling and mold opening and ejection processes on the die casting mold to obtain the aluminum die casting. Among them, the part where the imitation rectangular nozzle is connected to the die casting body is the liquid inlet, the cross section of the liquid inlet is imitation rectangular, and the thinnest thickness of the imitation rectangular nozzle after cooling and forming is greater than 6mm.

[0029] S120: A cutting loop area is set at the connection between the die-casting body and the imitation rectangular water outlet, the width of the cutting loop area is 1.2mm, a cutting loop is set in the middle of the cutting loop area, and a vibration shearing source intervention area is set in the area of ​​the imitation rectangular water outlet away from the cutting loop, and the vibration shearing source intervention area is clamped by rotating the vibration cutting piece.

[0030] In this embodiment, the cutting loop line is the center line of the cutting loop line area. The distances from the center line to the two side edges of the cutting loop line area are equal, that is, the distances from any point on the center line to the two side edges of the cutting loop line area are equal. Among them, the vibration cutting power source intervention area is the handle part of the sprue, that is, the rotating vibration cutting part realizes the clamping and positioning of the die-casting body and the rectangular-shaped sprue by clamping the handle part of the sprue.

[0031] Specifically, in one embodiment, after step S110 and before step S120, the method for locally cutting the ultra-thick sprue of the aluminum die-casting also includes: First, perform a cleaning operation on the release agent on the outer surface of the aluminum die-casting to remove the release agent on the outer surface of the aluminum die-casting; Then, spray a nano-aluminum oxide light-absorbing coating on the aluminum die-casting after the cleaning operation. The thickness range of the nano-aluminum oxide light-absorbing coating is between 2 μm and 10 μm. In this embodiment, the melting point of the nano-aluminum oxide light-absorbing coating is higher than that of the aluminum die-casting. By spraying the nano-aluminum oxide light-absorbing coating in the cutting loop line area, since the melting point of the nano-aluminum oxide light-absorbing coating is higher than that of the aluminum die-casting, the notch edge of the formed laser pre-cutting groove is not prone to cutting burrs and irregular flanging, thereby significantly improving the surface finish of the cutting and the cutting accuracy, and further effectively improving the quality of laser cutting, that is, effectively improving the quality of the laser pre-cutting groove formed by the subsequent laser cutting of the biaxial motion laser part. At the same time, after the nano-aluminum oxide light-absorbing coating is sprayed on the cutting loop line area, by utilizing the good light-absorbing performance of the nano-aluminum oxide light-absorbing coating, the absorption rate of the laser beam energy can be significantly improved, the reflection effect of the laser beam can be reduced, thereby reducing the laser power of the biaxial motion laser part, that is, reducing the energy consumption of the biaxial motion laser part. Moreover, the thickness range of the nano-aluminum oxide light-absorbing coating is between 2 μm and 10 μm, so as to ensure the adhesion quality of the nano-aluminum oxide light-absorbing coating, that is, improve the adhesion of the nano-aluminum oxide light-absorbing coating.

[0032] Further, the step of performing a cleaning operation on the release agent on the outer surface of the aluminum die-casting is specifically: using ultrasonic cleaning to perform a cleaning operation on the release agent on the outer surface of the aluminum die-casting to efficiently remove the release agent and other adhering dirt on the outer surface of the aluminum die-casting.

[0033] In one embodiment, before the step of spraying the nano-aluminum oxide light-absorbing coating on the aluminum die-casting after the cleaning operation, the method for locally cutting the ultra-thick sprue of the aluminum die-casting also includes: performing a drying operation on the aluminum die-casting after the cleaning operation to enable the nano-aluminum oxide light-absorbing coating to be better sprayed and formed on the aluminum die-casting. Specifically, the step of performing a drying operation on the aluminum die-casting after the cleaning operation is specifically: using a dryer to dry the aluminum die-casting to effectively improve the drying rate of the outer surface of the aluminum die-casting.

[0034] Furthermore, before the step of spraying the nano-alumina light-absorbing coating on the aluminum die-casting after the cleaning operation, the method for partially cutting the ultra-thick nozzle of the aluminum die-casting also includes: cooling the aluminum die-casting after the drying operation. Specifically, the aluminum die-casting is naturally left to stand at room temperature, or the aluminum die-casting after the drying operation is cooled by air cooling to accelerate the cooling of the aluminum die-casting, thereby reducing the influence of high temperature on the spraying of the nano-alumina light-absorbing coating, avoiding the problem that the nano-alumina light-absorbing coating partially volatilizes due to the excessive temperature of the aluminum die-casting when spraying the nano-alumina light-absorbing coating, and causing the nano-alumina light-absorbing coating to have a porous structure defect.

[0035] In order to ensure the adhesion of the nano-alumina light-absorbing coating, further, before the step of spraying the nano-alumina light-absorbing coating on the cutting loop area, the method for local cutting of ultra-thick nozzles of aluminum die-castings also includes: performing dust removal operations on the cutting loop area. Specifically, in this embodiment, a pneumatic air gun is used to remove dust from the cutting loop area to blow away the dust on the cutting loop area.

[0036] S130: Control the rotating vibration cutting part to rotate the aluminum die casting, and synchronously control the dual-axis motion laser part to emit a laser beam to perform a pre-cutting operation along the cutting ring line as a path to obtain a laser pre-cut groove, wherein the laser beam power is less than 1.2kw; In this embodiment, since the dual-axis motion laser component emits a laser beam to perform pre-cutting operations along the cutting ring line as a path, there is a preset distance between the cutting ring line and the outer contour line of the die-cast body. In this way, when the laser beam performs pre-cutting operations along the cutting ring line as a path, it is effectively avoided that the laser beam directly burns to the die-cast body, thereby ensuring the structural integrity of the die-cast body and reducing the defective rate of the die-cast body.

[0037] S140: After the laser pre-cut groove is cooled, the rotating vibration cutting member is controlled to output a power source to the vibration cutting power source intervention area to form a vibration cutting crack groove at the bottom of the laser pre-cut groove, and the frequency of the vibration cutting power source is less than 20 Hz.

[0038] In this embodiment, the driving and controlling rotating vibration cutting member outputs the power source to the aluminum die casting through the vibration cutting power source intervention area, and the frequency of the vibration cutting power source is less than 20Hz, so that the bottom of the laser pre-cut groove is better formed with the vibration cutting crack groove. If the frequency of the vibration cutting power source is too large, that is, the frequency is equal to or greater than 20Hz, it is easy to produce a deeper vibration cutting crack groove, causing the vibration cutting crack groove to damage the die casting body, and even causing the vibration cutting crack groove to directly crack into the inside of the die casting body in the form of a crack, so that the actual cross-section formed by the die casting body after cutting cannot be further processed and is scrapped.

[0039] S150: Control the rotating vibration cutting component to rotate the aluminum die casting, and synchronously control the dual-axis motion laser component to emit a laser beam to perform a cutting operation along the vibration cutting groove as a path to obtain a laser cutting groove.

[0040] In this embodiment, the vibration-cut crack groove at the bottom of the laser pre-cut groove is path-cut by emitting a laser beam through a dual-axis motion laser component. Since the vibration-cut crack groove is produced at the bottom of the laser pre-cut groove by controlling the rotating vibration-cut component to output the power source to the vibration-cut power source intervention area, i.e., vibration-cutting processing, and the laser pre-cut groove is obtained by controlling the dual-axis motion laser component to emit a laser beam along the cutting loop as a path for pre-cutting operations, that is, by utilizing a combined processing flow of laser pre-processing, vibration-cutting processing and laser processing, the water outlet to be cut is processed with a laser pre-cut groove, a vibration-cut crack groove and a laser-cut groove in sequence from the surface to the center of the water outlet. The laser pre-cut groove serves as a processing reference for the vibration-cut crack groove processing, and the vibration-cut crack groove serves as a processing reference for the laser-cut groove processing. The step-by-step cutting process is carried out until the die-cast body is cut off and separated from the imitation rectangular water outlet, while reducing the deviation of the step-by-step cutting of the ultra-thick water outlet.

[0041] S160: Determine whether the die-cast body and the imitation rectangular nozzle are separated; if not, repeat steps S140-S150 until the die-cast body and the imitation rectangular nozzle are separated by the laser cutting groove or the vibration cutting groove.

[0042] In this embodiment, after the laser cutting groove obtained by step S150 is processed, it is determined whether the die-cast body is separated from the imitation rectangular nozzle; the laser cutting groove obtained by step S150 is set as a primary laser cutting groove. If not, that is, the die-cast body is not separated from the imitation rectangular nozzle, then steps S140-S150 are repeated, that is, on the basis of the primary laser cutting groove obtained by step S150, the rotating vibration cutting member is controlled to output the power source to the vibration cutting power source intervention area again to form a secondary vibration cutting groove at the bottom of the primary laser cutting groove; then the dual-axis motion laser member is controlled to emit a laser beam along the secondary vibration cutting groove as a path for cutting operation to obtain a secondary laser cutting groove, and this cycle is repeated alternately until the die-cast body is separated from the imitation rectangular nozzle, thereby achieving effective cutting and separation of the ultra-thick nozzle, and synchronously reducing the deviation of the ultra-thick nozzle cutting.

[0043] In this embodiment, the method for partial cutting of super-thick nozzles of aluminum die castings of the present application first provides an aluminum die casting; then uses a low-power laser beam to perform a pre-cutting operation along a cutting loop as a path to obtain a laser pre-cut groove; then outputs a low-frequency dynamic source to the vibration cutting dynamic source intervention area by rotating the vibration cutting member, so that a vibration cutting crack groove is formed at the bottom of the laser pre-cut groove, and then uses a low-power laser beam to cut the vibration cutting crack groove, and repeats the above operation steps until the die-cast body and the imitation rectangular nozzle are separated by the laser cutting groove or the vibration cutting crack groove as the boundary. By adopting a processing method combining low-power laser beam cutting and low-frequency vibration cutting, the super-thick nozzle can be cut step by step to ensure that the super-thick nozzle is effectively removed.

[0044] Furthermore, compared with the traditional CNC machine tool cutting method of the water outlet, the cutting method of the present application adopts the method of first laser cutting to form a laser pre-cut groove, then vibration cutting to form a vibration cut groove, and then laser cutting the vibration cut groove. It should be noted that the local heating cutting method of laser cutting can effectively cut the product, and can simultaneously reduce the processing cost of the water outlet of the aluminum die-casting while meeting the surface flatness and surface performance consistency requirements of the product.

[0045] Furthermore, when a complex curved surface needs to be removed at the sprue, the cutting method of the present application does not require the design of a complex fixture structure, nor does it require higher requirements for CNC tools. It can be done by rotating the vibration cutting piece to clamp the vibration cutting source intervention area, and by adopting an alternating combination of laser cutting and vibration cutting processing of the aluminum die-casting, the removal and separation processing of the ultra-thick sprue is completed, avoiding the problem of higher matching requirements for fixture design and CNC tools when processing sprue with complex curved surface structures.

[0046] like Figure 2 and Figure 3 As shown, in one embodiment, the rotating vibration cutting part 20 includes a frame 300, a vibration source output component 400 and a rotating clamping component 500; the vibration source output component 400 is installed on the frame 300, and the vibration source output component 400 is used to output the dynamic source; the rotating clamping component 500 is arranged at the vibration source output end of the vibration source output component 400, and the rotating clamping component 500 is used to clamp the vibration cutting dynamic source intervention area, and drive the aluminum die casting 10 to rotate during the pre-cutting operation and the cutting operation.

[0047] It can be understood that in this embodiment, the movement path of the dual-axis motion laser component is limited to the motion plane formed by the X-axis and the Y-axis. Therefore, the rotating clamping component 500 is fixed to the vibration-cutting source intervention area through the clamping end, and the vibration-cutting source intervention area is rotated during the pre-cutting operation and the cutting operation, that is, the aluminum die-casting 10 is driven to rotate during the pre-cutting operation and the cutting operation, so as to cooperate with the laser beam emitted by the dual-axis motion laser component to perform pre-cutting and cutting operations on the aluminum die-casting 10, thereby enabling the dual-axis motion laser component to perform pre-cutting operations along the cutting loop as a path, and perform cutting operations along the vibration-cutting crack groove as a path. Specifically, in step S140, the rotating clamping component 500 is controlled to drive the aluminum die-casting 10 to rotate and reset, and then the vibration source output component 400 is controlled to output the dynamic source to the vibration-cutting source intervention area, that is, the dynamic source is transmitted from the rotating clamping component 500 to the vibration-cutting source intervention area of ​​the aluminum die-casting 10, so that a vibration-cutting crack groove is formed at the bottom of the laser pre-cutting groove.

[0048] It should be noted that the structure of the vibration source output component 400 and the principle of its output source are both prior art and will not be described in detail herein. For example, the vibration source output component 400 is an ultrasonic vibration component.

[0049] Furthermore, the vibration source output component 400 is installed on the frame 300 through a vibration-damping pad to prevent the vibration source generated by the vibration source output component 400 from affecting the frame, thereby simultaneously reducing the loss of the vibration source, thereby enabling the vibration source to better act on the aluminum die casting 10.

[0050] like Figure 3 and Figure 4 As shown, in one embodiment, the rotating clamping assembly 500 includes a rotating driving member 510, a clamping frame 520 and a telescopic driving member 530; the rotating driving member 510 is fixed to the vibration source output end of the vibration source output assembly 400, and the power output end of the rotating driving member 510 is fixedly connected to the clamping frame 520, and a hollow area 5201 is provided on the side of the clamping frame 520 away from the rotating driving member 510, and a clamping base is convexly provided on the hollow area 5201. 5210, the telescopic driving member 530 is arranged on the clamping frame 520, the telescopic end of the telescopic driving member 530 extends to the hollow area 5201, and the telescopic end of the telescopic driving member 530 is arranged opposite to the clamping base 5210, wherein the telescopic end of the telescopic driving member 530 moves in the direction close to the clamping base 5210 until the telescopic end of the telescopic driving member 530 and the clamping base 5210 are jointly clamped and positioned in the vibration-cutting source intervention area.

[0051] It can be understood that in this embodiment, since the clamping base 5210 is used to locate the vibration shearing source intervention area, and the telescopic end of the telescopic driving member 530 extends to the hollow area 5201 and is arranged opposite to the clamping base 5210, the telescopic end of the telescopic driving member 530 is driven to move toward the clamping base 5210, thereby forming a fixed clamping of the vibration shearing source intervention area by driving the telescopic end of the telescopic driving member 530 and the clamping base 5210, that is, forming a fixed clamping of the material handle part of the sprue, thereby realizing the rapid positioning and fixed clamping of the aluminum die casting 10, and the structure is simple and practical. In one embodiment, the clamping frame 520 is U-shaped.

[0052] Furthermore, the rotating driving member 510 is a rotating motor. In this embodiment, when the vibration source output assembly 400 outputs the power source, it drives the rotating driving member 510 and the aluminum die casting 10 to vibrate together.

[0053] like Figure 3 and Figure 4 As shown, in one embodiment, the telescopic drive member 530 is a cylinder drive member, a pneumatic cylinder drive member or an electric cylinder drive member. In this embodiment, the telescopic drive member 530 is a cylinder drive member, which can provide a reliable clamping force to cooperate with the clamping base 5210 to achieve rapid positioning and stable clamping of the aluminum die casting 10, so that the aluminum die casting 10 does not need to be disassembled during the laser cutting and vibration cutting process, that is, the same clamping station is used for the entire process, which effectively shortens the processing cycle.

[0054] like Figures 2 to 4 As shown, in one embodiment, the frame 300 is provided with a mounting platform 310, the vibration source output assembly 400 is located on the mounting platform 310, and a material collection area 301 is provided on one side of the frame 300 adjacent to the mounting platform 310, and the material collection area 301 is located below the clamping frame 520, and the material collection area 301 is used to collect the die-casting body 100 or the imitation rectangular water outlet 200.

[0055] Specifically, in this embodiment, a material collection cart 600 can be accommodated in the material collection area 301. In this way, the clamping frame 520 is extended to the top of the material collection area 301, so that the separated die-casting body 100 or the imitation rectangular sprue 200 can fall into the material collection trough of the material collection cart 600, which is convenient for the subsequent turnover and transportation of the material.

[0056] In one embodiment, in order to ensure the consistency of laser cutting of the vibration-cut groove by the dual-axis motion laser component, in step S150, the dual-axis motion laser component emits a laser beam along the vibration-cut groove as a path to perform a cutting operation, including: Capturing an image of the aluminum die casting on which the vibration-cut crack groove is formed, so as to obtain vibration-cut crack groove image information corresponding to the vibration-cut crack groove; Performing image processing and fitting according to the vibration-cut crack groove image information to obtain a crack groove contour image corresponding to the vibration-cut crack groove; Calculate according to the crack contour image to obtain a laser cutting path; wherein the laser cutting path is the center line of the crack contour; The dual-axis motion laser component is controlled to emit a laser beam to perform a cutting operation along a laser cutting path, thereby improving the accuracy of laser cutting, thereby improving the processing accuracy of the laser cutting groove, and realizing automated processing and reducing manual intervention.

[0057] Furthermore, the steps of the dual-axis motion laser component emitting a laser beam to perform a cutting operation along a laser cutting path are specifically as follows: Acquiring in real time along the laser cutting path the dynamic distance value from the laser beam emitting end of the dual-axis motion laser component to the bottom of the vibration-cut crack groove; Determining whether the dynamic distance value is within a preset dynamic distance interval; If not, adjust the focal length of the laser beam according to the power adjustment table to perform the cutting operation.

[0058] Specifically, the step of adjusting the focal length of the laser beam is: when the dynamic distance value is greater than the maximum value of the preset dynamic distance interval, the focal length of the laser beam is increased according to the power adjustment table; when the dynamic distance value is less than the minimum value of the preset dynamic distance interval, the focal length of the laser beam is shortened according to the power adjustment table. It can be understood that the aluminum die casting 10 rotates under the drive of the rotating vibration cutting member 20, so that the distance value from the laser beam emitting end of the dual-axis motion laser member to the cutting ring line area will change; at the same time, as the laser pre-cut groove deepens, the distance value from the laser beam emitting end to the laser pre-cut groove also increases synchronously; and when the dual-axis motion laser member emits a laser beam along the vibration cutting groove as a path for cutting operation, as the laser cutting proceeds, the depth of the laser cutting also increases synchronously. The above-mentioned focal length adjustment method improves the applicability of laser processing, and at the same time enables the laser beam to adjust the focal length of the laser beam in real time during the cutting operation along the laser cutting path, avoiding the laser beam from cutting inadequately or excessively. It should be noted that in the above-mentioned focal length adjustment method, the power of the dual-axis motion laser component is constant.

[0059] In this embodiment, a laser triangulation system is used, which is integrated into the laser beam emitting end of the dual-axis motion laser component, that is, the laser head of the dual-axis motion laser component, so as to monitor the distance value from the laser beam emitting end of the dual-axis motion laser component to the bottom of the vibration-cut crack groove in real time, that is, to monitor the change of the dynamic distance value in real time, so as to feed back the real-time change data of the dynamic distance value to the control end of the dual-axis motion laser component, so as to adjust the focal length of the laser beam of the dual-axis motion laser component. The above-mentioned laser triangulation system can realize a non-contact measurement method, which effectively ensures the efficiency and accuracy of laser cutting of the dual-axis motion laser component.

[0060] It should be noted that the method of automatically adjusting the focal length of a dual-axis motion laser component and the distance measurement method of a laser triangulation system belong to the prior art and will not be introduced in detail here.

[0061] Furthermore, if not, before the step of adjusting the focal length of the laser beam according to the power adjustment table to perform the cutting operation, the step of the dual-axis motion laser component emitting a laser beam along the laser cutting path to perform the cutting operation also includes: establishing a power adjustment table in which multiple dynamic distance values ​​correspond to the focal lengths of multiple laser beams, thereby improving the applicability of laser processing.

[0062] In one embodiment, the power of the laser beam emitted by the dual-axis motion laser component in step S150 is less than the power of the laser beam emitted by the dual-axis motion laser component in step S130. Simultaneously, the laser cutting speed of the dual-axis motion laser component in step S150 is lower than the laser cutting speed of the dual-axis motion laser component in step S130. Thus, by controlling the output of the two parameters of the laser beam power and the cutting speed, the laser beam emitted by the dual-axis motion laser component in step S150 can perform fine cutting on the vibration-cut crack groove, ensuring that the surface consistency of the obtained laser-cut groove is good, making the flatness of the actual cross-section formed by the die-cast body 100 better, and reducing the time consumption of subsequent grinding of the actual cross-section.

[0063] Among them, during the laser cutting process of the dual-axis motion laser parts, the exhaust equipment is used synchronously to collect the slag and smoke during the laser cutting process, so as to avoid the accumulation of slag and the pollution of smoke.

[0064] In one of the embodiments, after step S130 and before step S140, the method for partially cutting an ultra-thick nozzle of the aluminum die casting 10 further includes: cooling the aluminum die casting 10.

[0065] It can be understood that in this embodiment, the specific steps of cooling the aluminum die casting 10 are: using compressed air and atomized coolant to spray the aluminum die casting 10, and the time of the mixed spray is less than 15s. In this way, the laser pre-cut groove can be quickly cooled from a high temperature state to a normal temperature state, and compared with the traditional pure air cooling method, the high-speed cooling method combining compressed air and atomized coolant has a better cooling rate, and the cooling time is shorter, and the problem of thermal deformation and warping around the laser pre-cut groove is reduced, thereby ensuring that the aluminum die casting 10 is vibrated by rotating the vibrating cutting piece 20 in step 140, so that the shape of the formed vibrating cutting groove is more regular and consistent.

[0066] Furthermore, in order to improve the accuracy of the mixed injection of compressed air and atomized coolant, in one embodiment, a three-dimensional image of the laser pre-cut groove is collected to obtain a three-dimensional image of the laser pre-cut groove; a path analysis is performed on the three-dimensional image of the laser pre-cut groove to obtain a three-dimensional path image; and according to the three-dimensional path image, the cooling injection device is controlled to perform surrounding mixed injection on the laser pre-cut groove. In this way, accurate injection cooling of the laser pre-cut groove can be achieved, while better avoiding the waste of injection dose.

[0067] Furthermore, in order to solve the problem of workshop environmental pollution caused by the mixed injection of compressed air and atomized coolant, in one embodiment, when the laser pre-cut groove is mixed and injected, an air suction device is used to simultaneously perform a suction operation on the surrounding air of the aluminum die casting 10. In this way, the content of atomized coolant dispersed in the air is reduced, thereby preventing the atomized coolant from polluting the workshop environment.

[0068] In one embodiment, in step S120, the rotating vibration cutting member 20 clamps the vibration cutting source intervention area using a pneumatic clamping mechanism, and the vibration cutting source intervention area is provided with an anti-slip clamping surface, and the roughness of the anti-slip clamping surface is Ra12.5μm.

[0069] It can be understood that in the present embodiment, the use of a pneumatic clamping mechanism can improve the convenience and reliability of clamping the vibration-cutting source intervention area; and, by providing an anti-slip clamping surface and making the roughness of the anti-slip clamping surface Ra12.5μm, the friction coefficient of the anti-slip clamping surface can be significantly improved, so that the pneumatic clamping mechanism has better stability in clamping the vibration-cutting source intervention area, thereby effectively reducing the sliding offset of the vibration-cutting source intervention area during the vibration-cutting process, thereby ensuring the accuracy of subsequent dual-axis motion laser parts for laser cutting.

[0070] In one embodiment, after step S160, the method for partially cutting an ultra-thick nozzle of the aluminum die casting 10 further includes: Scanning the actual cross section formed by the die-cast body 100 with a CCD camera to obtain a three-dimensional image of the actual cross section; Comparing the actual cross-sectional three-dimensional image with the reference end face three-dimensional image to obtain comparison data; The grinding equipment is controlled according to the comparison data to perform grinding operation on the actual cross section.

[0071] In this embodiment, the actual cross section formed by the die-cast body 100 is scanned by a CCD camera, that is, the cross section formed by the die-cast body 100 and the imitation rectangular nozzle 200 separated by the laser cutting groove or the vibration cutting groove as the boundary, and the actual cross section three-dimensional stereo image is obtained; then the actual cross section three-dimensional stereo image is compared with the reference end face three-dimensional stereo image to obtain comparison data, wherein, by analyzing the comparison data, it is obtained that the actual cross section three-dimensional stereo image has cross section protrusion data greater than 0.3mm compared with the reference end face three-dimensional stereo image. In this way, when the grinding device is controlled to perform grinding operation on the actual cross section according to the comparison data, the grinding device can be assisted to adjust the grinding operation on the actual cross section according to the cross section protrusion data, that is, the area with more cross section protrusions can be targetedly polished, and the grinding time of the above area can be extended, thereby ensuring the overall grinding quality of the cross section, and realizing automatic grinding operation, reducing manual intervention, and improving grinding efficiency and accuracy.

[0072] The present disclosure also provides an aluminum die-casting 10, which is processed by the ultra-thick nozzle local cutting method of the aluminum die-casting 10 based on low-power laser and low-frequency vibration cutting described in any of the above-mentioned embodiments. The aluminum die-casting 10 includes a die-casting body 100 and an imitation rectangular nozzle 200, and the die-casting body 100 and the imitation rectangular nozzle 200 are die-casted as one piece.

[0073] The aluminum die casting 10 is obtained by using the above-mentioned aluminum die casting super-thick sprue local cutting method. The above-mentioned aluminum die casting super-thick sprue local cutting method can cut the super-thick sprue step by step by combining low-power laser beam cutting with low-frequency vibration cutting, thereby ensuring that the super-thick sprue is effectively removed.

[0074] Furthermore, compared with the traditional CNC machine tool cutting method of the water outlet, the aluminum die-casting 10 obtained by the cutting method of the present application specifically adopts the method of first laser cutting to form a laser pre-cut groove, then vibration cutting to form a vibration-cut crack groove, and then laser cutting the vibration-cut crack groove. It should be noted that the local heating cutting method of laser cutting can effectively cut the product, and can simultaneously reduce the processing cost of the water outlet of the aluminum die-casting while meeting the surface flatness and surface performance consistency requirements of the product.

[0075] Furthermore, when a complex curved surface needs to be removed at the sprue, the cutting method of the present application does not require the design of a complex fixture structure, nor does it require higher requirements for CNC tools. It can be done by rotating the vibration cutting piece to clamp the vibration cutting source intervention area, and by adopting an alternating combination of laser cutting and vibration cutting processing of the aluminum die-casting, the removal and separation processing of the ultra-thick sprue is completed, avoiding the problem of higher matching requirements for fixture design and CNC tools when processing sprue with complex curved surface structures.

[0076] Compared with the prior art, the present invention has at least the following advantages: 1. The present invention discloses a method for partially cutting an ultra-thick nozzle of an aluminum die-casting. First, an aluminum die-casting is provided; then, a low-power laser beam is used to perform a pre-cutting operation along a cutting loop as a path to obtain a laser pre-cut groove; then, a low-frequency dynamic source is output to the vibration-cutting dynamic source intervention area by rotating the vibration-cutting member, so that a vibration-cutting crack groove is formed at the bottom of the laser pre-cut groove; then, a low-power laser beam is used to cut the vibration-cutting crack groove, and the above-mentioned operation steps are repeated until the die-casting body and the imitation rectangular nozzle are separated by the laser cutting groove or the vibration-cutting crack groove as the boundary. By adopting a processing method combining low-power laser beam cutting with low-frequency vibration cutting, the ultra-thick nozzle can be cut step by step to ensure that the ultra-thick nozzle is effectively removed.

[0077] 2. Compared with the traditional CNC machine tool cutting method of water outlet, the cutting method of the present application adopts the method of first laser cutting to form a laser pre-cut groove, then vibration cutting to form a vibration cut groove, and then laser cutting the vibration cut groove. It should be noted that the local heating cutting method of laser cutting can effectively cut the product, and can simultaneously reduce the processing cost of the water outlet of aluminum die-casting parts while meeting the surface flatness and surface performance consistency requirements of the product.

[0078] 3. When the water outlet has a complex curved surface to be removed, the cutting method of the present application does not require the design of a complex fixture structure, nor does it require higher requirements for CNC tools. It can be done by rotating the vibration cutting piece to clamp the vibration cutting source intervention area, and by adopting an alternating combination of laser cutting and vibration cutting processing of aluminum die-casting parts, the removal and separation processing of the ultra-thick water outlet is completed, avoiding the problem of higher matching requirements for fixture design and CNC tools when processing water outlets with complex curved surface structures.

[0079] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for partially cutting an ultra-thick nozzle of an aluminum die casting, characterized in that: The steps include: S110: providing an aluminum die-casting, wherein the aluminum die-casting comprises a die-casting body and an imitation rectangular nozzle, wherein the thinnest thickness of the imitation rectangular nozzle is greater than 6 mm; S120: a cutting line area is provided at the connection between the die casting body and the imitation rectangular nozzle, the width of the cutting line area is 1.2 mm, a cutting line is provided in the middle of the cutting line area, and a vibration shearing source intervention area is provided in the area of ​​the imitation rectangular nozzle away from the cutting line, and the vibration shearing source intervention area is clamped by rotating the vibration cutting member; S130: Control the rotating vibration cutting part to rotate the aluminum die casting, and synchronously control the dual-axis motion laser part to emit a laser beam to perform a pre-cutting operation along the cutting ring line as a path to obtain a laser pre-cut groove, wherein the laser beam power is less than 1.2kw; S140: Control the rotating vibration cutting member to output a dynamic source to the vibration cutting dynamic source intervention area to form a vibration cutting crack groove at the bottom of the laser pre-cut groove, and the frequency of the vibration cutting dynamic source is less than 20 Hz; S150: Control the rotating vibration cutting component to rotate the aluminum die casting, and synchronously control the dual-axis motion laser component to emit a laser beam to perform a cutting operation along the vibration cutting groove as a path to obtain a laser cutting groove; S160: Determine whether the die-cast body is separated from the imitation rectangular nozzle; if not, repeat steps S140-S150 until the die-cast body is separated from the imitation rectangular nozzle with the laser cutting groove or the vibration cutting groove as the boundary.

2. The method for partially cutting an ultra-thick nozzle of an aluminum die casting according to claim 1, characterized in that: In step S150, the step of the biaxial motion laser component emitting a laser beam along the vibration-cut crack groove as a path to perform a cutting operation includes: Capturing an image of the aluminum die casting on which the vibration-cut crack groove is formed, so as to obtain vibration-cut crack groove image information corresponding to the vibration-cut crack groove; Performing image processing and fitting according to the vibration-cut crack groove image information to obtain a crack groove contour image corresponding to the vibration-cut crack groove; Calculating according to the crack contour image to obtain a laser cutting path; wherein the laser cutting path is the center line of the crack contour; The dual-axis motion laser component is controlled to emit a laser beam to perform a cutting operation along a laser cutting path.

3. The method for partial cutting of super-thick nozzle of aluminum die casting according to claim 1, characterized in that: The power of the laser beam emitted by the dual-axis motion laser component in step S150 is less than the power of the laser beam emitted by the dual-axis motion laser component in step S130.

4. The method for partially cutting an ultra-thick nozzle of an aluminum die casting according to claim 1, characterized in that: After step S130 and before step S140, the method for partially cutting an ultra-thick nozzle of an aluminum die casting further includes: The aluminum die casting is subjected to a cooling operation.

5. The method for partially cutting an ultra-thick nozzle of an aluminum die casting according to claim 4, characterized in that: The specific steps of cooling the aluminum die casting are: using compressed air and atomized coolant to spray the aluminum die casting in a mixed manner, and the time of the mixed spraying is less than 15 seconds.

6. The method for partially cutting an ultra-thick nozzle of an aluminum die casting according to claim 1, characterized in that: In step S120, the rotating vibration cutting member clamps the vibration cutting source intervention area using a pneumatic clamping mechanism, and the vibration cutting source intervention area is provided with an anti-slip clamping surface, and the roughness of the anti-slip clamping surface is Ra12.5μm.

7. The method for partially cutting an ultra-thick nozzle of an aluminum die casting according to claim 1, characterized in that: After step S110 and before step S120, the method for partially cutting an ultra-thick nozzle of an aluminum die casting further includes: Cleaning the release agent on the outer surface of the aluminum die casting; The aluminum die casting after the cleaning operation is sprayed with a nano-aluminum oxide light-absorbing coating.

8. The method for partially cutting an ultra-thick nozzle of an aluminum die casting according to claim 7, characterized in that: The thickness of the nano-aluminum oxide light-absorbing coating ranges from 2 μm to 10 μm.

9. The method for partially cutting an ultra-thick nozzle of an aluminum die casting according to claim 1, characterized in that: After step S160, the method for partially cutting an ultra-thick nozzle of an aluminum die casting further includes: Scanning the actual cross section formed by the die-cast body by a CCD camera to obtain a three-dimensional image of the actual cross section; Comparing the actual cross-sectional three-dimensional image with the reference end face three-dimensional image to obtain comparison data; The grinding equipment is controlled according to the comparison data to perform grinding operation on the actual cross section.

10. An aluminum die casting, characterized in that: The aluminum die casting is obtained by using the method for local cutting of ultra-thick nozzles as described in any one of claims 1 to 9.

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