Temperature-control and shape-control fuse wire additive manufacturing system

Abstract

The utility model discloses a temperature-control and shape-control fuse wire additive manufacturing system which comprises a workbench, a substrate, a tungsten electrode welding gun and a wire feeder. The base plate is installed on the table top of the workbench, and cooling pipelines used for being connected with a cooling liquid circulation system are closely arranged in the base plate in an S shape. The tungsten electrode welding gun and the wire feeder are mounted at the position, above the base plate, of the workbench; a temperature detection system is further installed on the workbench and used for detecting the temperature of a cladding layer of the additive manufacturing part and displaying the detected temperature in real time. The temperature-control and shape-control fuse additive manufacturing system provided by the utility model can reduce the risk of molten pool collapse in the arc fuse additive manufacturing process, and can optimize the performance of an additive manufacturing part.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal fuse printing technical field especially relates to a temperature and shape control's fuse additive manufacturing system. BACKGROUND

[0002] Titanium alloy is widely used in aerospace, medical treatment, ship and other fields due to its light weight, high specific strength, corrosion resistance and other excellent comprehensive performance. These performances also correspondingly increase the difficulty of titanium alloy processing, and it is difficult to prepare large and complex structural parts. With the rise of fuse printing technology, it shows great advantages in titanium alloy processing, improves the forming efficiency of large titanium alloy parts and the utilization rate of materials. The arc fuse additive manufacturing technology has low equipment price, simple operation, and better forming efficiency and forming capacity than laser fuse additive manufacturing and electron beam fuse additive manufacturing technology, so it is widely used in the field of titanium alloy fuse additive manufacturing.

[0003] However, in the process of arc fuse additive manufacturing, when the heat dissipation condition is poor, heat dissipation is usually carried out through heat conduction, so a large amount of heat accumulation is easily generated in the forming process, and problems such as stress deformation and molten pool collapse are easily generated. The existing researches have studied the substrate temperature control system, but the cooling liquid pipes used in the substrate are distributed in a scattered manner, the temperature distribution of each part of the substrate is uneven, and the heat exchange between the substrate and the printed part cannot be well realized. In order to solve the above problems, a temperature and shape control's fuse additive manufacturing system is provided. UTILITY MODEL CONTENTS

[0004] The utility model discloses a temperature and shape control's fuse additive manufacturing system, reduces the risk of molten pool collapse in the process of arc fuse additive manufacturing, and optimizes the performance of additive manufacturing parts.

[0005] To solve the above technical problems, the utility model provides a temperature and shape control's fuse additive manufacturing system, which comprises a workbench, a substrate, a tungsten electrode welding gun and a wire feeder, the substrate is installed on the table top of the workbench, the substrate is arranged with cooling pipelines for connecting a cooling liquid circulating system in a "S" shape, the tungsten electrode welding gun and the wire feeder are installed above the substrate on the workbench, and a temperature detection system is also installed on the workbench, which is used for detecting the temperature of the additive manufacturing part cladding layer and displaying the detected temperature in real time.

[0006] Further, the temperature detection system comprises a temperature sensing element and a temperature display instrument, the temperature display instrument is connected with the temperature sensing element and is used for displaying the temperature data detected by the temperature sensing element in real time, and the temperature sensing element is movably installed on the workbench through a displacement mechanism, and the displacement mechanism is used for adjusting the horizontal position and height of the temperature sensing element.

[0007] Further, the displacement mechanism comprises a horizontal electric slide rail horizontally mounted on the tabletop of the workbench and a vertical electric slide rail vertically arranged with the horizontal electric slide rail and mounted on the slider of the horizontal electric slide rail, and the temperature sensing element is mounted on the slider of the vertical electric slide rail.

[0008] Further, the horizontal electric slide rail and the vertical electric slide rail are electrically connected with the controller.

[0009] Further, the base plate comprises a matched upper plate body and lower plate body; the upper plate body and the lower plate body are detachably connected, and the cooling pipeline is clamped and mounted between the upper plate body and the lower plate body.

[0010] Further, the upper plate body and the lower plate body are both provided with a placing groove for positioning and placing the cooling pipeline.

[0011] Compared with the prior art, the temperature and shape controlled fuse additive manufacturing system has at least the following beneficial effects:

[0012] The temperature and shape controlled fuse additive manufacturing system provided by the utility model utilizes the tungsten electrode welding gun and the wire feeder to perform fuse additive manufacturing on the base plate on the workbench, the base plate is provided with a cooling water channel, the cooling water channel is connected with a cooling liquid circulating system, heat dissipation during additive manufacturing can be realized, the cooling water channel is arranged in the base plate in a "S" shape, uniform heat conduction between the additive manufacturing part and the base plate is ensured, heat dissipation effect is improved, the risk of molten pool collapse during electric arc fuse additive manufacturing is reduced, and additive manufacturing part performance is optimized; meanwhile, the temperature detection system is arranged, the temperature of the additive manufacturing part cladding layer is monitored in real time, the risk of molten pool collapse during electric arc fuse additive manufacturing is further reduced, and additive manufacturing part performance is optimized. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the temperature and shape controlled fuse additive manufacturing system of the utility model;

[0014] Figure 2 It is a distribution schematic view of the cooling pipeline in the base plate in the temperature and shape controlled fuse additive manufacturing system of the utility model;

[0015] Figure 3 It is a schematic view of the base plate fixing the cooling pipeline in the temperature and shape controlled fuse additive manufacturing system of the utility model.

[0016] In the figure: 1. Workbench; 2. Base plate; 21. Upper plate; 211. Mounting groove; 212. Threaded hole; 22. Lower plate; 221. Countersunk hole; 3. Tungsten electrode welding gun; 4. Wire feeder; 5. Cooling pipe; 6. Temperature detection system; 61. Temperature sensing element; 62. Temperature display; 63. Horizontal electric slide; 64. Vertical electric slide; 65. Controller. DETAILED DESCRIPTION

[0017] The following schematic diagrams provide a more detailed description of the temperature- and shape-controlled fused filament additive manufacturing system of the present invention. These schematic diagrams illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art may modify the present invention as described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as a general guide for those skilled in the art and not as a limitation of the present invention.

[0018] The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0019] like Figure 1 As shown, an embodiment of the present invention proposes a temperature-controlled and shape-controlled fused wire additive manufacturing system, including a workbench 1, a base plate 2, a tungsten electrode welding gun 3 and a wire feeder 4.

[0020] The substrate 2 is mounted on the table of the workbench 1, and Figure 2 The base plate 2 has cooling pipes 5 arranged closely in an S-shape for connecting to a coolant circulation system.

[0021] The tungsten electrode welding gun 3 and the wire feeder 4 are installed on the workbench 1 at a position above the substrate 2; a temperature detection system 6 is also installed on the workbench 1, and the temperature detection system 6 is used to detect the temperature of the cladding layer of the additively manufactured part and display the detected temperature in real time.

[0022] In the above embodiment, the cooling pipe 5 is connected to the cooling liquid circulating system, the cooling liquid circulating system uses liquid nitrogen as the heat conduction medium, and when the wire and arc additive manufacturing is performed, the wire and arc additive manufacturing is performed on the substrate 2 by using the tungsten electrode welding gun 3 in cooperation with the wire feeder 4, the cooling liquid circulating system sends the circulating liquid nitrogen to the cooling pipe 5, and the effective heat dissipation of the additive manufacturing part is realized. Since the cooling pipe 5 is arranged in the substrate 2 in a "S" shape, uniform heat conduction between the additive manufacturing part and the substrate 2 is ensured, the heat dissipation effect is improved, and the risk of molten pool collapse in the wire and arc additive manufacturing process is reduced. At the same time, the solidification rate of the molten pool metal is increased, the beta columnar grains along the metal accumulation direction in the additive manufacturing process are refined, and the performance of the additive manufacturing part is optimized.

[0023] At the same time, due to the arrangement of the temperature detection system 6, the temperature of the additive manufacturing part can be detected and displayed in real time, the purpose of real-time temperature monitoring is achieved, and the working personnel can understand the temperature of the working area in real time, so as to make corresponding adjustments. For example, if it is found that the temperature of the additive manufacturing part is too high, the flow rate of the liquid nitrogen entering the cooling pipe 5 can be adjusted. It can be seen that, through the arrangement of the temperature detection system 6, the risk of molten pool collapse in the wire and arc additive manufacturing process is further reduced, and the performance of the additive manufacturing part is optimized.

[0024] In the above implementation process, the cooling liquid circulating system belongs to the prior art, and will not be described in detail here. As to how to adjust the flow rate of the liquid nitrogen entering the cooling pipe 5, a valve can be installed at the inlet end of the cooling pipe 5, and the flow rate of the liquid nitrogen entering the cooling pipe 5 can be adjusted by adjusting the opening degree of the valve.

[0025] In a specific embodiment, the temperature detection system 6 includes a temperature sensing element 61 and a temperature display instrument 62; the temperature display instrument 62 is connected to the temperature sensing element 61 and is used to display the temperature data detected by the temperature sensing element 61 in real time; the temperature sensing element 61 is movably installed on the workbench 1 by a displacement mechanism, and the displacement mechanism is used to adjust the horizontal position and the height of the temperature sensing element 61.

[0026] In the above specific embodiment, the temperature sensing element 61 is a non-contact infrared thermal imaging temperature detector, which has a wide temperature reading range and is resistant to high temperature, meeting the use requirements.

[0027] Through the arrangement of the displacement driving mechanism, the temperature sensing element 61 can be adjusted in the vertical direction and the horizontal direction, so that the temperature sensing element 61 can adjust the detection area according to the work progress, and the detection effect of the temperature sensing element 61 is improved.

[0028] Specifically, the displacement mechanism comprises a horizontal electric slide rail 63 horizontally mounted on the tabletop of the workbench 1 and a vertical electric slide rail 64 vertically arranged with the horizontal electric slide rail 63 and mounted on the slider of the horizontal electric slide rail 63, and the temperature sensing element 61 is mounted on the slider of the vertical electric slide rail 64.

[0029] By starting the horizontal electric slide rail 63, the slider thereon is driven to move, which can drive the temperature sensing element 61 mounted on the vertical electric slide rail 64 to move horizontally. By starting the vertical electric slide rail 64, the slider thereon is driven to move, which can drive the temperature sensing element 61 mounted on the slider to slide up and down.

[0030] Further, the horizontal electric slide rail 63 and the vertical electric slide rail 64 are electrically connected with a controller 65.

[0031] Through the setting of the controller 65, the horizontal electric slide rail 63 and the vertical electric slide rail 64 can be automatically controlled in a programmed manner, further improving the detection effect of the temperature sensing element 61.

[0032] It should be noted that the horizontal electric slide rail 63 and the vertical electric slide rail 64 both adopt common linear modules on the market, such as synchronous belt type linear modules, ball screw type linear modules, etc., which belong to the prior art and will not be described in detail here.

[0033] In a specific embodiment, the base plate 2 comprises a matched upper plate body 21 and lower plate body 22; the upper plate body 21 and the lower plate body 22 are detachably connected, and the cooling pipeline 5 is clamped and mounted between the upper plate body 21 and the lower plate body 22.

[0034] Specifically, in combination with the above description Figure 3 The upper plate body 21 and the lower plate body 22 are both provided with a placing groove 211 for positioning and placing the cooling pipeline 5. The cooling pipeline 5 is placed in the placing groove 211 of the lower plate body 22, then the upper plate body 21 is covered on the lower plate body 22, and then the upper plate body 21 and the lower plate body 22 are fixed. At this time, the cooling pipeline 5 is also fixed. In order to ensure the heat dissipation effect of the installed cooling pipeline 5, the placing groove 211 is designed to be matched with the outer wall of the cooling pipeline 5. When the cooling pipeline 5 is clamped and mounted between the upper plate body 21 and the lower plate body 22, the outer wall of the cooling pipeline 5 is attached to the surface of the placing groove 211. When it is necessary to maintain or replace the cooling pipeline 5, the upper plate body 21 and the lower plate body 22 are only separated, and then the cooling pipeline 5 is taken out from the placing groove 211.

[0035] In the implementation process, the upper plate body 21 and the lower plate body 22 can be fixed by bolts. The countersunk holes 221 are arranged at intervals on the lower plate body 22, and the threaded holes 212 are arranged at corresponding positions on the upper plate body 21. The bolts are inserted into the countersunk holes 221 and screwed with the threaded holes 212 to fix the upper plate body 21 and the lower plate body 22. When the upper plate body 21 and the lower plate body 22 need to be separated, the bolts are only needed to be unscrewed.

[0036] Of course, the countersunk holes 221 can also be arranged on the upper plate body 21, and the corresponding threaded holes 212 are arranged on the lower plate body 22, which is not limited. It should be noted that the fixing mode between the upper plate body 21 and the lower plate body 22 is not limited to the bolt fixing mode, and other modes such as the buckle clamping mode can also be selected.

[0037] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technology, the present application also intends to include these modifications and variations.

Claims

1. A temperature-controlled and shape-controlled fused filament additive manufacturing system, characterized in that: Including workbench, base plate, tungsten electrode welding gun and wire feeder; The base plate is mounted on the table top of the workbench, and cooling pipes for connecting to a coolant circulation system are closely arranged in an "S" shape in the base plate; The tungsten electrode welding gun and the wire feeder are installed on the workbench at a position above the base plate; The workbench is also equipped with a temperature detection system for detecting the temperature of the cladding layer of the additively manufactured part and displaying the detected temperature in real time; The temperature detection system includes a temperature sensing element and a temperature display; The temperature display is connected to the temperature sensing element and is used to display the temperature data detected by the temperature sensing element in real time; The temperature sensing element is movably mounted on the workbench via a displacement mechanism, and the displacement mechanism is used to adjust the horizontal position and height of the temperature sensing element.

2. The temperature-controlled and shape-controlled fused filament additive manufacturing system according to claim 1, wherein: The displacement mechanism includes a horizontal electric slide rail mounted horizontally on the table top of the workbench and a vertical electric slide rail arranged perpendicular to the horizontal electric slide rail and mounted on the slider of the horizontal electric slide rail. The temperature sensing element is mounted on the slider of the vertical electric slide rail.

3. The temperature-controlled and shape-controlled fused filament additive manufacturing system according to claim 2, wherein: The horizontal electric slide rail and the vertical electric slide rail are electrically connected to a controller.

4. The temperature-controlled and shape-controlled fused filament additive manufacturing system according to claim 1, wherein: The base plate includes an upper plate body and a lower plate body that match each other; The upper plate body and the lower plate body are detachably connected, and the cooling pipe is clamped and installed between the upper plate body and the lower plate body.

5. The temperature-controlled and shape-controlled fused filament additive manufacturing system according to claim 4, wherein: The upper plate body and the lower plate body are both provided with placement grooves for positioning the cooling pipes.

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