Numerical control special processing machine tool for agricultural machinery

Abstract

The application discloses a numerical control special machining tool for agricultural machinery, and relates to the technical field of machining tool, which comprises a machining assembly for laser cutting treatment of agricultural machinery parts, and a pretreatment assembly for cleaning the parts to be machined is arranged on the top of the machining assembly. The numerical control special machining tool for agricultural machinery can cover the surface of the stainless steel agricultural machinery part with a liquid base film layer after the pretreatment of the stainless steel agricultural machinery part is completed, so that a continuous and crack-free film layer is formed on the surface of the stainless steel agricultural machinery part; then, the second spray head sprays a liquid matting coating to the surface of the stainless steel agricultural machinery part, so that a protective film is formed; the surface of the stainless steel agricultural machinery part is formed with the base film layer and the matting coating, heat damage and oxidation of the stainless steel base material caused by laser machining are avoided, local overheating caused by reflected light is reduced, and machining precision deviation caused by energy fluctuation is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining tools, in particular to a numerical control special machining tool for agricultural machinery. BACKGROUND

[0002] The numerical control special machining tool is a high-end equipment combined with numerical control technology and special machining process, and its core feature is to break through the limitations of traditional machining, and to realize precision machining of high-hardness, high-toughness and complex-shaped materials through electrical, thermal, optical and chemical non-mechanical energy methods. It not only solves the problem that traditional machine tools are difficult to process, but also realizes automation, high precision and high consistency production through a numerical control system, and is widely used in the fields of aerospace, automobile, agricultural machinery, mold and electronic high-end manufacturing. The numerical control special machining tool for agricultural machinery refers to a machine tool device that adopts numerical control technology and can meet the special machining requirements of agricultural machinery parts.

[0003] The existing laser numerical control special machining tool is one of the main equipment for processing agricultural machinery parts. Through the synergistic effect of precise control of the laser energy focusing numerical control system, it uses a high-energy density laser beam as a processing tool, drives the machine tool movement parts through the numerical control system, and makes the laser beam act on the metal workpiece according to the preset agricultural machinery part drawing trajectory, realizes the processing of agricultural machinery metal parts, and integrates cutting, punching, welding and surface strengthening. It can process all types of agricultural machinery parts from structural parts to precision parts, but since the agricultural machinery parts are mainly made of stainless steel, the laser reflectivity is high, which can easily lead to ineffective absorption of laser energy by the material, and thus the effective energy acting on the cutting area is insufficient, resulting in unstable cutting process and ideal state of instantaneous melting, and thus the cutting speed is greatly reduced.

[0004] Therefore, we propose a numerical control special machining tool for agricultural machinery to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a numerical control special machining tool for agricultural machinery to solve the problem of low cutting speed of the laser numerical control special machining tool when processing stainless steel agricultural machinery parts.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a numerical control special processing machine tool for agricultural machinery, comprising a processing assembly for laser cutting processing of agricultural machinery parts, a pretreatment assembly for cleaning the parts to be processed is arranged on the top of the processing assembly, the pretreatment assembly comprises a protective bin, a negative pressure pipe is fixedly communicated with the top of the protective bin near one side edge, a communication pipe for conveying high-temperature gas into the protective bin is fixedly communicated with the top of the protective bin near the other side edge, a drainage cover for uniformly diffusing hot gas is fixedly communicated with one end of the communication pipe, after the protective bin covers the agricultural machinery parts, the negative pressure pipe generates negative pressure to absorb the dust on the surface of the agricultural machinery parts, the high-temperature gas in the communication pipe is uniformly diffused into the interior of the protective bin through the drainage cover to uniformly warm the agricultural machinery parts, a protection assembly is arranged in the interior of the protective bin, the protection assembly comprises a liquid storage tank for storing base film and a moving frame, a liquid storage tank for storing light extinction coating is arranged on the top of the moving frame, the protective film in the liquid storage tank and the liquid storage tank are both sprayed onto the surface of the agricultural machinery parts through spraying equipment to form double-layer protection.

[0007] Preferably, the pretreatment assembly further comprises two limiting frames, a negative pressure pump is fixedly installed on the top of the protective bin near the center through screws, a drainage pipe is fixedly communicated with the output end of the negative pressure pump, and a collection bin is coupled and connected to the outer surface of the protective bin through an auxiliary plate.

[0008] Preferably, the other end of the communication pipe is fixedly communicated with a treatment bin, a filter plate is fixedly installed on the inner wall of the treatment bin, a blower fan is coupled and connected to the inner wall of the treatment bin through an auxiliary rod, heating wires are arranged on the inner wall of the treatment bin, a temperature sensor is arranged on the inner wall of one side of the protective bin, and a coating thickness gauge is arranged on the inner wall of the other side of the protective bin.

[0009] Preferably, the protection assembly further comprises two connecting rods, a forward and reverse motor is fixedly installed on the outer surface of the protective bin through screws, a lead screw is fixedly connected to the output end of the forward and reverse motor, a limiting rod is fixedly installed between the opposite inner walls of one of the connecting rods, a delivery pump is fixedly installed on the top of the moving frame through screws, a delivery pipe is fixedly communicated with the input end of the delivery pump, an output pipe is fixedly communicated with the output end of the delivery pump, and a first spraying head is coupled and arranged on one end of the output pipe.

[0010] Preferably, a fixing frame is fixedly installed on the top of the moving frame near the center, a hydraulic rod is arranged on the inner top surface of the fixing frame near the center, a piston is fixedly arranged on the bottom end of the hydraulic rod, a liquid storage tank is fixedly embedded in the interior of the moving frame, a liquid delivery pipe is fixedly communicated with the bottom end of the liquid storage tank, and a second spraying head is coupled and connected to the bottom end of the liquid delivery pipe.

[0011] Preferably, the outer surfaces of the two limit racks are fixedly connected with the opposite outer surfaces of the protective bin respectively, one end of the negative pressure pipe is fixedly communicated with the output end of the negative pressure pump, and the bottom end of the drainage pipe is fixedly penetrated into the inside of the collecting bin.

[0012] Preferably, the outer surfaces of the two connecting rods are fixedly connected with the opposite inner walls of the protective bin respectively, the two ends of the lead screw are movably penetrated into the opposite outer parts of the protective bin respectively, the two ends of the lead screw are movably penetrated into the opposite outer parts of the other connecting rod respectively, and the outer surface of the lead screw is threadedly connected with the inner wall of the moving frame.

[0013] Preferably, the two ends of the limiting rod are movably penetrated into the opposite outer parts of the moving frame respectively, one end of the conveying pipe is fixedly penetrated into the inside of the liquid storage tank, the bottom end of the output pipe is fixedly penetrated into the outside of the moving frame, the outer surface of the piston is slidably connected with the inner wall of the liquid storage tank, and the bottom end of the infusion pipe is fixedly penetrated into the outside of the moving frame.

[0014] Preferably, the processing assembly comprises a mounting frame, the inner walls of the two limit racks are fixedly connected with the opposite outer surfaces of the mounting frame respectively, a horizontal sliding mechanism is arranged between the opposite inner walls of one side of the mounting frame close to the side edge, the outer surface of the horizontal sliding mechanism is provided with a lifting mechanism, and the inner wall of the lifting mechanism is provided with the laser numerical control cutting machine.

[0015] Preferably, a moving mechanism is arranged between the opposite inner walls of the other side of the mounting frame, the outer surface of the moving mechanism is coupled with a sliding plate, a gas cylinder is arranged on the top of the sliding plate close to the center, a bearing plate is fixedly arranged on the top of the gas cylinder, a clamping positioning mechanism is arranged on the top of the bearing plate close to the center, and the protective bin is arranged on the top of the bearing plate.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. After the stainless steel agricultural machine part is pretreated, the liquid base film layer is covered on the surface of the stainless steel agricultural machine part by arranging the first spray head close to the top of the agricultural machine part, so that a continuous and crack-free film layer is formed on the surface of the stainless steel agricultural machine part, then the liquid matting coating is sprayed on the surface of the stainless steel agricultural machine part by the second spray head, so that a protective film is formed, the base film layer and the matting coating are formed on the surface of the stainless steel agricultural machine part, the thermal damage and oxidation of the stainless steel base material caused by laser processing are avoided, the local overheating caused by reflected light is reduced, the processing precision deviation caused by energy fluctuation is avoided, and the multiple goals of high-efficiency processing, high-quality finished product and long-acting protection are realized, thereby solving the problem of low cutting speed of the laser numerical control special processing machine tool in processing the stainless steel agricultural machine part.

[0018] 2、When the laser numerical control special machining machine tool is needed to be used for processing agricultural machinery parts, the stainless steel agricultural machinery parts are placed in the closed space formed by the protection bin and the bearing plate, the impurities on the surface of the agricultural machinery parts are adsorbed by the negative pressure mode, and the surface of the agricultural machinery parts is cleaned.

[0019] 3、In order to improve the cutting precision of subsequent agricultural machinery parts, the heating wire is electrically connected with the external power supply, the high-temperature heat generated by the heating wire is delivered to the protection bin, is uniformly diffused to the inside of the protection bin through the flow guide cover, the agricultural machinery parts are uniformly heated, and the working efficiency of subsequent processing is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of a numerical control special machining machine tool for agricultural machinery;

[0021] Figure 2 It is an expanded perspective view of the processing assembly part structure of the numerical control special machining machine tool for agricultural machinery;

[0022] Figure 3 It is an expanded perspective view of the bearing plate part structure of the numerical control special machining machine tool for agricultural machinery;

[0023] Figure 4 It is a perspective view of the pretreatment assembly part of the numerical control special machining machine tool for agricultural machinery;

[0024] Figure 5 It is a perspective view of the protection bin part of the numerical control special machining machine tool for agricultural machinery;

[0025] Figure 6 It is another angle perspective view of the protection bin part of the numerical control special machining machine tool for agricultural machinery;

[0026] Figure 7 It is a perspective view of the protection assembly part of the numerical control special machining machine tool for agricultural machinery;

[0027] Figure 8 It is an expanded perspective view of the moving frame part structure of the numerical control special machining machine tool for agricultural machinery.

[0028] IN THE DRAWINGS:

[0029] 1,Processing assembly; 101,Mounting frame; 102,Horizontal sliding mechanism; 103,Lifting mechanism; 104,Laser numerical control cutting machine; 105,Moving mechanism; 106,Slide plate; 107,Cylinder; 108,Bearing plate; 109,Clamping positioning mechanism; 2,Preprocessing assembly; 201,Limiting frame; 202,Protective bin; 203,Negative pressure pump; 204,Negative pressure pipe; 205,Drainage pipe; 206,Collection bin; 207,Communication pipe; 208,Drainage cover; 209,Processing bin; 210,Filter plate; 211,Induced draft fan; 212,Heating wire; 3,Temperature sensor; 4,Coating thickness gauge; 5,Protective assembly; 501,Connecting rod; 502,Forward and reverse motor; 503,Screw rod; 504,Limiting rod; 505,Moving frame; 506,Storage tank; 507,Delivery pump; 508,Delivery pipe; 509,Output pipe; 510,First spray head; 511,Mounting frame; 512,Hydraulic rod; 513,Piston; 514,Storage tank; 515,Infusion pipe; 516,Second spray head. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to 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 the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0031] Please refer to Figures 1-8The application provides a technical scheme: a numerical control special machining tool for agricultural machinery, which comprises a machining assembly 1 for laser cutting treatment of agricultural machinery parts, and a pretreatment assembly 2 for cleaning the parts to be machined is arranged on the top of the machining assembly 1, the pretreatment assembly 2 comprises a protective bin 202, a negative pressure pipe 204 is fixedly connected to the top of the protective bin 202 and communicates with the protective bin 202 near one side edge, a communicating pipe 207 for conveying high-temperature gas into the protective bin 202 is fixedly connected to the top of the protective bin 202 and communicates with the protective bin 202 near the other side edge, a flow guide cover 208 for uniformly diffusing the hot gas is fixedly connected to one end of the communicating pipe 207, after the agricultural machinery parts are covered by the protective bin 202, the negative pressure pipe 204 generates negative pressure to absorb the dust on the surface of the agricultural machinery parts, the high-temperature gas in the communicating pipe 207 is uniformly diffused into the protective bin 202 through the flow guide cover 208 to uniformly warm the agricultural machinery parts, a protection assembly 5 is arranged in the protective bin 202, the protection assembly 5 comprises a liquid storage tank 506 for storing a base film and a moving frame 505, a liquid storage tank 514 for storing a light extinction coating is arranged on the top of the moving frame 505, the protective film in the liquid storage tank 506 and the liquid storage tank 514 are both sprayed onto the surface of the agricultural machinery parts through spraying equipment to form double-layer protection, the pretreatment assembly 2 further comprises two limiting frames 201, a negative pressure pump 203 is fixedly installed on the top of the protective bin 202 near the center through screws, a flow guide pipe 205 is fixedly connected to the output end of the negative pressure pump 203, a collection bin 206 is coupled and connected to the outer surface of the protective bin 202 through an auxiliary plate, the other end of the communicating pipe 207 is fixedly connected to a treatment bin 209, a filter plate 210 is fixedly installed on the inner wall of the treatment bin 209, a blower 211 is coupled and connected to the inner wall of the treatment bin 209 through an auxiliary rod, heating wires 212 are arranged on the inner wall of the treatment bin 209, a temperature sensor 3 is arranged on one side wall of the protective bin 202, and a coating thickness gauge 4 is arranged on the other side wall of the protective bin 202.

[0032] In the embodiment, when the laser numerical control special machining tool is needed to machine the agricultural machinery parts, the parts to be machined are first placed at the center position of the clamping positioning mechanism 109, wherein, as shown in Figure 2As shown, the clamping positioning mechanism 109 is composed of three hydraulic cylinders, through the extension and retraction of the three hydraulic cylinders, the corresponding three clamps are moved respectively, so that the positioning of the agricultural machinery parts is realized, then the cylinder 107 is started to make it extend and drive the agricultural machinery parts to move upwards until the top of the bearing plate 108 is tightly attached to the bottom of the protective bin 202, so that the protective bin 202 and the bearing plate 108 form a closed space, then the negative pressure pump 203 is started to drive the negative pressure pipe 204 to extract gas inside the protective bin 202, so that the protective bin 202 is in a state of negative pressure, thereby processing the impurities adsorbed on the surface of the agricultural machinery parts, realizing the cleaning of the surface of the agricultural machinery parts, at the same time, in order to improve the precision of subsequent cutting of agricultural machinery parts, the heating wire 212 is electrically connected with the external power supply to release heat outward, and the air blower 211 is started, wherein the air blower 211 forms negative pressure in the system by mechanical work to drag the gas to flow along the inside of the communication pipe 207, wherein in order to prevent external air from entering the inside of the protective bin 202, the inside of the filter plate 210 is provided with glass fiber filter material, which separates dust and impurities in the gas flow from the gas by physical interception, adsorption and inertial effect, realizes the filtration of the gas, after the high-temperature gas enters the protective bin 202, it is uniformly diffused into the inside of the protective bin 202 through the draft cover 208, realizing the uniform heating of the agricultural machinery parts, at the same time, the temperature in the protective bin 202 is detected by the temperature sensor 3, when the temperature in the protective bin 202 reaches the preheating value of the stainless steel agricultural machinery parts: 60-80℃, it means that the agricultural machinery parts reaches the preheating temperature, wherein the working principle of the temperature sensor 3 is the existing mature technology, which will not be described in detail here, through the action of the pretreatment assembly 2, the laser numerical control special machining machine tool can automatically realize the preheating and cleaning of the stainless steel agricultural machinery parts, improving the work efficiency of subsequent processing.

[0033] As Figures 7-8The utility model discloses a numerical control special processing machine tool for agricultural machine, including the processing assembly 1 for carrying out laser cutting treatment to agricultural machine spare parts, the top of processing assembly 1 is provided with the preprocessing assembly 2 for the cleaning of the spare part needing processing, and preprocessing assembly 2 includes the protective storehouse 202, and the top of protective storehouse 202 is fixedly connected with negative pressure pipe 204 in the proximity of one side edge, and the top of protective storehouse 202 is fixedly connected with the communicating pipe 207 for conveying high-temperature gas to the inside of protective storehouse 202 in the proximity of the other side edge, and one end of communicating pipe 207 is fixedly connected with the drainage cover 208 for the even diffusion of hot gas, after protective storehouse 202 covers agricultural machine spare parts, negative pressure pipe 204 generates negative pressure, and the dust on the surface of agricultural machine spare parts is absorbed, and the high-temperature gas in communicating pipe 207 is evenly diffused to the inside of protective storehouse 202 through drainage cover 208, and agricultural machine spare parts are evenly heated, and the inside of protective storehouse 202 is provided with protective assembly 5, and protective assembly 5 includes the liquid storage tank 506 for storing base film and movable frame 505, and the top of movable frame 505 is provided with the liquid storage tank 514 for storing light extinction coating, and the protective film in liquid storage tank 514 and liquid storage tank 506 are all sprayed to the surface of agricultural machine spare parts through spraying equipment, form double -layer protection, and protective assembly 5 also includes two connecting rods 501, and the outer surface of protective storehouse 202 is fixedly installed with positive and negative motor 502 through screw, and the output end of positive and negative motor 502 is fixedly connected with lead screw 503, and the opposite inner wall between one connecting rod 501 is fixedly installed with limit rod 504, and the top of movable frame 505 is fixed with delivery pump 507 through screw, and the input end of delivery pump 507 is fixedly connected with conveying pipe 508, and the output end of delivery pump 507 is fixedly connected with output pipe 509, and one end of output pipe 509 is coupled with first spray head 510, and the top of movable frame 505 is fixedly installed with fixed frame 511 near the center, and the inside top surface of fixed frame 511 is provided with hydraulic rod 512 near the center, and the bottom end of hydraulic rod 512 is fixed with piston 513, and movable frame 505 is fixedly embedded with liquid storage tank 514, and the bottom end of liquid storage tank 514 is fixedly connected with infusion tube 515, and the bottom end of infusion tube 515 is coupled with second spray head 516, and the outer surface of two limit frames 201 is fixedly connected with the opposite outer surface of protective storehouse 202 respectively, and one end of negative pressure pipe 204 is fixedly connected with the output end of negative pressure pump 203, and the bottom end of drainage pipe 205 is fixedly penetrated to the inside of collection storehouse 206, and the outer surface of two connecting rods 501 is fixedly connected with the opposite inner wall of protective storehouse 202 respectively, and the both ends of lead screw 503 are movably penetrated to the opposite exterior of protective storehouse 202 respectively, and the both ends of lead screw 503 are movably penetrated to the opposite exterior of another connecting rod 501 respectively, and the outer surface of lead screw 503 is threadedly connected with the inner wall of movable frame 505, and the both ends of limit rod 504 are movably penetrated to the opposite exterior of movable frame 505 respectively, and one end of conveying pipe 508 is fixedly penetrated to the inside of liquid storage tank 506, and the bottom end of output pipe 509 is fixedly penetrated to the outside of movable frame 505,The outer surface of the piston 513 slides with the inner wall of the liquid storage tank 514, and the bottom end of the infusion tube 515 is fixed to penetrate to the outside of the moving frame 505.

[0034] In this embodiment, when the stainless steel agricultural machinery parts pretreatment is completed, the positive and negative motor 502 can be started, so that it drives the screw rod 503 to rotate, and then drives the moving frame 505 to move along the outer surface of the screw rod 503, wherein the limiting rod 504 plays a limiting role on the moving frame 505, with the movement of the moving frame 505 drives the first spray head 510 to move towards the direction of the agricultural machinery parts, when the first spray head 510 approaches the top of the agricultural machinery parts, the conveying pump 507 can be started, so that it drives the conveying pipe 508 to extract the base film layer liquid to the inside of the liquid tank 506, until the base film layer liquid completely covers the surface of the stainless steel agricultural machinery parts, the conveying pump 507 can be closed, wherein the temperature of the liquid base film layer is 110-130℃, in addition, the liquid is processed from low density polyethylene material, the density of low density polyethylene is 0.922-0.926g / cm³, and the melt index is 1.7-2.2g / min, when it is sprayed to the surface of the agricultural machinery parts, due to the strong thermal conductivity of the agricultural machinery parts made of stainless steel material processing, it will quickly absorb the heat of the liquid base film layer, causing its temperature to drop below the melting point in an instant, at this time the liquid base film layer will solidify under the action of temperature difference, because the stainless steel agricultural machinery parts are preheated to 60-80℃ before the liquid base film layer is sprayed, the cooling speed of the liquid base film layer can be greatly slowed down, providing sufficient solidification buffer time for the liquid base film layer, so that it can transition from liquid to solid at a slower speed, the molecular chain can be more evenly spread and combined, and finally a continuous and crack-free film layer is formed on the surface of the stainless steel agricultural machinery parts, when the first spray head 510 driven by the positive and negative motor 502 moves to one end of the lead screw 503, the positive and negative motor 502 is started again in reverse, driving the lead screw 503 to rotate in reverse, and driving the moving frame 505 to move towards the surface of the agricultural machinery parts again, at the same time, the fixed frame 511 is started to extend, driving the piston 513 to move downward, at the same time, the valve arranged inside the liquid storage tank 514 is opened, so that the liquid extinction coating stored in the liquid storage tank 514 is under the action of high pressure and enters the inside of the liquid storage tank 514 along the liquid storage tank 514, and finally is uniformly sprayed downward to the surface of the stainless steel agricultural machinery parts through the second spray head 516, wherein the liquid extinction coating is mainly processed by ultra-fine silicon dioxide and polyurethane acrylate, and through cross-linking and curing of polyurethane acrylate, it is attached to the stainless steel interface and uniformly dispersed through ultra-fine silicon dioxide, so as to ensure the integrity of the film layer and the extinction effect, and finally a continuous and stable extinction protective film is formed, forming a protective film for the stainless steel agricultural machinery parts, through the action of the protection assembly 5, the base film layer and the extinction coating are formed on the surface of the stainless steel agricultural machinery parts, avoiding thermal damage and oxidation of the stainless steel substrate caused by laser processing, the base film layer forms a physical barrier on the surface of the stainless steel, isolating the oxygen in the air during laser processing, so that it does not come into contact with the high-temperature substrate, reducing the oxidation discoloration of the processing area from the root, the extinction coating can reduce the laser reflectivity to below 20%, so that the laser energy is more concentrated in the processing area, reducing the local overheating caused by reflected light, at the same time avoiding the processing precision deviation caused by energy fluctuation, and realizing the multiple goals of high-efficiency processing + high-quality finished product + long-acting protection, solving the problem of low cutting speed of the laser numerical control special processing machine tool when processing stainless steel agricultural machinery parts in the prior art.

[0035] As Figures 1-3As shown, the processing assembly 1 comprises a mounting frame 101, the inner walls of the two limiting frames 201 are fixedly connected with the opposite outer surfaces of the mounting frame 101, a horizontal sliding mechanism 102 is arranged between the opposite inner walls of one side of the mounting frame 101 close to the side edge, the outer surface of the horizontal sliding mechanism 102 is provided with a lifting mechanism 103, the inner wall of the lifting mechanism 103 is provided with a laser numerical control cutting machine 104, a moving mechanism 105 is arranged between the opposite inner walls of the other side of the mounting frame 101, the outer surface of the moving mechanism 105 is coupled with a sliding plate 106, a gas cylinder 107 is arranged on the top of the sliding plate 106 close to the center, a bearing plate 108 is fixedly installed on the top of the gas cylinder 107, a clamping positioning mechanism 109 is arranged on the top of the bearing plate 108 close to the center, and the protective bin 202 is arranged on the top of the bearing plate 108.

[0036] In this embodiment, after the surface protection of the stainless steel agricultural machinery parts is completed, the gas cylinder 107 can be started again to make it shorter, so as to drive the stainless steel agricultural machinery parts to move out of the inside of the protective bin 202 downward, and then the moving mechanism 105 can be started to drive the sliding plate 106 to move in the direction of the laser numerical control cutting machine 104, wherein the laser numerical control cutting machine 104 is a collaborative process of high-energy laser focusing + numerical control system precise control + local material thermal processing, the core is to realize efficient and high-precision cutting of agricultural machinery part materials by using the high energy density of laser, at the same time, it is suitable for the processing needs of the shape diversity, large thickness span and high strength requirement of agricultural machinery parts, through five core links of laser generation and transmission, energy focusing, material action, numerical control trajectory control and auxiliary system cooperation, each link is closely linked to ensure the processing precision and efficiency, and ensure the cutting performance, when the stainless steel agricultural machinery parts move to the bottom of the laser numerical control cutting machine 104, the cooperation between the lifting mechanism 103 and the horizontal sliding mechanism 102 can be used to cut and process the agricultural machinery parts.

[0037] The method for using the device and the working principle: when the laser numerical control special processing machine tool is needed to process the agricultural machine parts, first, the parts to be processed are placed in the center of the clamping positioning mechanism 109, and the three hydraulic cylinders are extended and retracted to drive the corresponding three clamps to move respectively, so that the positioning of the agricultural machine parts is realized, then the air cylinder 107 is started to be elongated, driving the agricultural machine parts to move upwards until the top of the bearing plate 108 is tightly attached to the bottom of the protective bin 202, so that an enclosed space is formed between the protective bin 202 and the bearing plate 108, then the negative pressure pump 203 is started to extract the gas in the protective bin 202 through the negative pressure pipe 204, so that the protective bin 202 is in a state of negative pressure, thereby processing the impurities adsorbed on the surface of the agricultural machine parts, then the heating wire 212 is electrically connected with the external power supply to release heat outward, at the same time, the air blower 211 is started to heat the gas filtered by the filter plate 210 and deliver it into the protective bin 202, which is uniformly diffused into the interior of the protective bin 202 through the flow guide cover 208, at the same time, the temperature sensor 3 detects the temperature in the protective bin 202, when the temperature in the protective bin 202 reaches the preheating value of the stainless steel agricultural machine parts: 60-80℃, it indicates that the agricultural machine parts have reached the preheating temperature, when the pre-treatment of the stainless steel agricultural machine parts is completed, the positive and negative motor 502 is started to drive the lead screw 503 to rotate, thereby driving the moving frame 505 to move along the outer surface of the lead screw 503, with the movement of the moving frame 505, the first spray head 510 moves towards the agricultural machine parts, when the first spray head 510 approaches the top of the agricultural machine parts, the delivery pump 507 is started to extract the base film layer liquid into the liquid tank 506 through the delivery pipe 508, until the base film layer liquid completely covers the surface of the stainless steel agricultural machine parts, the delivery pump 507 is closed, when the liquid base film layer is sprayed on the surface of the agricultural machine parts, due to the strong heat conductivity of the agricultural machine parts made of stainless steel, the liquid base film layer will quickly absorb the heat, causing the temperature to drop below the melting point in an instant, at this time, the liquid base film layer will solidify under the action of temperature difference, since the stainless steel agricultural machine parts are preheated to 60-80℃ before the liquid base film layer is sprayed, the cooling speed of the liquid base film layer can be greatly slowed down, providing sufficient solidification buffer time for the liquid base film layer, so that it can transition from liquid to solid at a slower speed, the molecular chain can be more evenly spread and combined, and finally a continuous and crack-free film layer is formed on the surface of the stainless steel agricultural machine parts, when the positive and negative motor 502 drives the first spray head 510 to move to one end of the lead screw 503, the liquid base film layer is just layered, the positive and negative motor 502 is started again in reverse to drive the lead screw 503 to rotate in reverse, thereby driving the moving frame 505 to move towards the surface of the agricultural machine parts again, at the same time, the fixed frame 511 is started to be elongated, driving the piston 513 to move downwards, at the same time, the valve door arranged in the liquid tank 514 is opened,Therefore, the liquid extinction coating stored in the liquid storage tank 514 is under the action of high pressure along the liquid storage tank 514 into the inside of the liquid delivery pipe 515, and finally uniformly sprayed downward to the surface of the stainless steel agricultural machine part through the second spray head 516. When the protection of the surface of the stainless steel agricultural machine part is completed, the air cylinder 107 can be started again to shorten it, so as to drive the stainless steel agricultural machine part to move out of the inside of the protection bin 202, and then the moving mechanism 105 can be started to drive the sliding plate 106 to move to the direction of the laser numerical control cutting machine 104. The laser numerical control cutting machine 104 is a synergistic process of high-energy laser focusing + numerical control system precise control + local material thermal processing, and the core is to realize efficient and high-precision cutting of agricultural machine part materials by using the high energy density of laser. At the same time, it is suitable for the processing requirements of various shapes, large thickness span and high strength of agricultural machine parts. Through five core links of laser generation and transmission, energy focusing, material action, numerical control trajectory control and auxiliary system cooperation, each link is closely linked to ensure the processing precision and efficiency, and the cutting performance. When the stainless steel agricultural machine part moves to the bottom of the laser numerical control cutting machine 104, the cooperation between the lifting mechanism 103 and the horizontal sliding mechanism 102 can be used to cut and process the agricultural machine part.

[0038] The wiring diagram of the horizontal sliding mechanism 102, the lifting mechanism 103, the laser numerical control cutting machine 104, the moving mechanism 105, the air cylinder 107, the clamping positioning mechanism 109, the negative pressure pump 203, the air blower 211, the heating wire 212, the temperature sensor 3, the coating thickness gauge 4, the forward and reverse motor 502, the conveying pump 507 and the hydraulic rod 512 in the application belong to the common knowledge in the art, and the working principle is a known technology. The model is selected according to the actual use, so the control mode and wiring arrangement of the horizontal sliding mechanism 102, the lifting mechanism 103, the laser numerical control cutting machine 104, the moving mechanism 105, the air cylinder 107, the clamping positioning mechanism 109, the negative pressure pump 203, the air blower 211, the heating wire 212, the temperature sensor 3, the coating thickness gauge 4, the forward and reverse motor 502, the conveying pump 507 and the hydraulic rod 512 will not be explained in detail.

[0039] Although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A CNC special processing machine tool for agricultural machinery, comprising a processing assembly (1) for laser cutting agricultural machinery parts, characterized in that: The processing component (1) is provided with a pretreatment component (2) for cleaning the parts to be processed. The pretreatment component (2) includes a protective chamber (202). A negative pressure pipe (204) is fixedly connected to the top of the protective chamber (202) near one side edge. A connecting pipe (207) for conveying high-temperature gas into the protective chamber (202) is fixedly connected to the top of the protective chamber (202) near the other side edge. One end of the connecting pipe (207) is fixedly connected to a diversion hood (208) for uniformly diffusing hot gas. After the protective chamber (202) covers the agricultural machinery parts, the negative pressure pipe (204) generates negative pressure to absorb the dust on the surface of the agricultural machinery parts. The high-temperature gas in the connecting pipe (207) is uniformly diffused into the interior of the protective chamber (202) through the diversion hood (208) to uniformly heat the agricultural machinery parts until the workpiece is preheated to 60~80℃, so that the CNC special processing machine tool forms an operation sequence of preheating before spraying. The protective chamber (202) is equipped with a protective component (5). The protective component (5) includes a liquid storage tank (506) for storing the base film and a movable frame (505). The top of the movable frame (505) is equipped with a liquid storage tank (514) for storing the matte coating. The protective film in the liquid storage tank (514) and the liquid storage tank (506) are sprayed onto the surface of the agricultural machinery parts by a spraying device to form a double layer of protection. The pretreatment component (2) also includes two limiting frames (201). A negative pressure pump (203) is fixedly installed on the top of the protective chamber (202) near the center by screws. The output end of the negative pressure pump (203) is fixedly connected to a drainage pipe (205). A collection chamber (206) is coupled to the outer surface of the protective chamber (202) through an auxiliary plate. The other end of the connecting pipe (207) is fixedly connected to the processing chamber (209). A filter plate (210) is fixedly installed on the inner wall of the processing chamber (209). An exhaust fan (211) is coupled to the inner wall of the processing chamber (209) through an auxiliary rod. A heating wire (212) is provided on the inner wall of the processing chamber (209). A temperature sensor (3) is provided on one side of the inner wall of the protective chamber (202). A coating thickness gauge (4) is provided on the other side of the inner wall of the protective chamber (202). The protective assembly (5) also includes two connecting rods (501). A forward and reverse motor (502) is fixedly installed on the outer surface of the protective chamber (202) by screws. A lead screw (503) is fixedly connected to the output end of the forward and reverse motor (502). A limit rod (504) is fixedly installed between the inner walls of one of the connecting rods (501). A delivery pump (507) is fixedly installed on the top of the moving frame (505) by screws. A delivery pipe (508) is fixedly connected to the input end of the delivery pump (507). An output pipe (509) is fixedly connected to the output end of the delivery pump (507). A first spray head (510) is coupled to one end of the output pipe (509). A fixed frame (511) is fixedly installed on the top of the movable frame (505) near the center. A hydraulic rod (512) is provided on the inner top surface of the fixed frame (511) near the center. A piston (513) is fixed at the bottom end of the hydraulic rod (512). A liquid storage tank (514) is fixedly embedded inside the movable frame (505). A delivery pipe (515) is fixedly connected to the bottom end of the liquid storage tank (514). A second spray head (516) is coupled to the bottom end of the delivery pipe (515). The outer surfaces of the two limiting frames (201) are fixedly connected to the opposite outer surfaces of the protective chamber (202), one end of the negative pressure pipe (204) is fixedly connected to the output end of the negative pressure pump (203), and the bottom end of the drainage pipe (205) is fixedly inserted into the interior of the collection chamber (206). The outer surfaces of the two connecting rods (501) are fixedly connected to the inner walls of the protective chamber (202), the outer surface of the piston (513) slides against the inner wall of the storage tank (514), and the bottom end of the infusion tube (515) is fixedly extended to the outside of the movable frame (505). The processing component (1) includes a mounting frame (101), the inner walls of the two limiting frames (201) are fixedly connected to the opposite outer surfaces of the mounting frame (101), a horizontal sliding mechanism (102) is provided between the inner walls of one side of the mounting frame (101) near one edge, a lifting mechanism (103) is provided on the outer surface of the horizontal sliding mechanism (102), and a laser CNC cutting machine (104) is provided on the inner wall of the lifting mechanism (103). A moving mechanism (105) is provided between the inner walls on the other side of the mounting bracket (101). A sliding plate (106) is coupled to the outer surface of the moving mechanism (105). A cylinder (107) is provided near the center of the top of the sliding plate (106). A bearing plate (108) is fixedly installed on the top of the cylinder (107). A clamping and positioning mechanism (109) is provided near the center of the top of the bearing plate (108). The protective chamber (202) is located on the top of the bearing plate (108).

2. The CNC special processing machine tool for agricultural machinery according to claim 1, characterized in that: Both ends of the lead screw (503) are respectively movably inserted through the opposite exterior of the protective chamber (202), and both ends of the lead screw (503) are respectively movably inserted through the opposite exterior of another connecting rod (501). The outer surface of the lead screw (503) is threadedly connected to the inner wall of the movable frame (505).

3. The CNC special processing machine tool for agricultural machinery according to claim 2, characterized in that: The two ends of the limiting rod (504) are respectively movably inserted through the opposite sides of the movable frame (505), one end of the delivery pipe (508) is fixedly inserted through the interior of the liquid storage tank (506), and the bottom end of the output pipe (509) is fixedly inserted through the exterior of the movable frame (505).

Images