CN210098977U - Composite heat source synchronous rolling additive manufacturing equipment - Google Patents

Abstract

The utility model belongs to increase the material and make the field to a compound synchronous rolling increase material manufacture equipment of heat source is disclosed. This increase material manufacture equipment is including shaping platform, deformation strengthening mechanism, heating mechanism and supplementary temperature regulation and control mechanism, wherein: the wire to be formed is melted by the heating mechanism and then is solidified and formed to form a fused layer, the auxiliary temperature regulating mechanism detects the temperature of the fused layer solidified and formed on the forming table in real time on one hand, and locally heats the solidified and formed fused layer to soften the fused layer according to the temperature detected in real time on the other hand, and the deformation strengthening mechanism is used for applying pressure to the softened forming part to roll so as to enable the softened forming part to generate uniform plastic deformation, refine the grain structure and improve the mechanical performance; the relative positions of the heating mechanism, the auxiliary temperature regulating mechanism and the deformation strengthening mechanism are fixed. Through the utility model discloses, the grain structure that realizes the part that takes shape refines, the improvement of mechanical properties.

Description

A composite heat source synchronous rolling increase material manufacturing equipment

technical field

The utility model belongs to the field of increased material manufacturing, and more particularly relates to a composite heat source synchronous rolling increased material manufacturing equipment.

Background technique

The electric arc wire additive manufacturing technology is developed from the traditional arc welding. The cheap arc is used as the heat source to melt the wire material. Based on the STL digital model slicing plan, the numerical control code is generated, and the heating mechanism is driven layer by layer on the substrate. Net shape. Generally, after using additive manufacturing to form a whole, due to the principle of layer-by-layer forming, the internal structure is often anisotropic, and its performance and strength are relatively weak. However, applications in high-end manufacturing fields, such as aerospace, ship, nuclear power and other industries often have higher requirements on material properties, thus limiting the industrial application of conventional additive manufacturing.

At present, in the process of increasing the material manufacturing, there are the following problems: the strength of the parts obtained by the increasing material manufacturing is not high, the mechanical properties are poor, and the surface quality of the formed parts is poor, and the dimensional accuracy is low. In order to solve the above technical problems, it is urgent to seek a A method for manufacturing an augmented material that can solve the above-mentioned problems.

Utility model content

Aiming at the above defects or improvement needs of the prior art, the present invention provides a composite heat source synchronous rolling material manufacturing equipment. At the same time, the temperature-controlled deformation strengthening of the parts to be formed not only improves the mechanical properties and strength of the formed parts, but also improves the surface quality and precision of the forming, and finally achieves high-efficiency, high-strength, and high-precision integrated composite manufacturing.

In order to achieve the above object, according to the present utility model, a kind of composite heat source synchronous rolling increase material manufacturing equipment is provided, and this material increase material manufacturing equipment comprises a forming platform, a deformation strengthening mechanism, a heating mechanism and an auxiliary temperature control mechanism, wherein:

The forming platform is used as a working table, and the heating mechanism is arranged above the forming platform. After the wire to be formed is melted by the heating mechanism, droplets are formed and drop on the forming platform, and rapidly solidify and form to form a fusion deposit. layer, the auxiliary temperature regulation mechanism is arranged on one side of the heating mechanism, the deformation strengthening mechanism is arranged behind the auxiliary temperature regulation mechanism, and the auxiliary temperature regulation mechanism is detected in real time on the forming table on the one hand The temperature of the solidified and formed fusion layer, on the other hand, according to the temperature detected in real time, the fusion layer is locally heated to soften it, and the deformation strengthening mechanism is used to apply pressure to the softened fusion layer. pressure, so that the softened fused layer will undergo uniform plastic deformation, the internal grain structure will be refined, and the mechanical properties will be improved;

The heating mechanism, the auxiliary temperature control mechanism and the deformation strengthening mechanism move synchronously, so that the heating of the raw material, the auxiliary temperature control and the deformation strengthening are performed synchronously.

Further preferably, in the temperature control device, a laser or plasma high-energy beam heat source is preferably used to locally heat the solidified and formed fused layer.

Further preferably, a cooling mechanism is provided in the temperature control mechanism to cool the deposited layer when the temperature exceeds a preset temperature.

Further preferably, the deformation strengthening mechanism uses a constant pressure or a constant height to roll the softened fusion layer.

Further preferably, the deformation strengthening mechanism adopts a roller.

Further preferably, the raw material of the additive manufacturing equipment is wire or powder.

Further preferably, the manufacturing equipment of the augmented material is carried out under an atmosphere of an inert protective gas during the forming process.

In general, compared with the prior art, the following beneficial effects can be achieved through the above technical solutions conceived by the present utility model:

1. The utility model adopts the deformation strengthening mechanism to roll the parts to be formed. The rolling itself is a pressure finishing method. Compared with other strengthening forms, the rolling is a kind of continuous pressure to make the just-formed metal area uniform. In this process, the grain structure of the part to be formed is significantly refined, the mechanical properties are improved, and the surface forming quality and dimensional accuracy are improved;

2. In the present utility model, the auxiliary temperature control mechanism is used to adjust and control the metal temperature in the deformation strengthening area, which is different from the laser arc hybrid welding directly acting on the molten pool, and the temperature control is mainly used to coordinate the deformation strengthening of different metals. The deformation temperature range is more targeted and can quickly and accurately provide the best strengthening temperature for rolling;

3. Plastic deformation is a typical performance enhancement method. The utility model realizes synchronous plastic deformation in the process of additive manufacturing, and for the optimal plastic strengthening temperature range of different materials, combined with a temperature control device to achieve temperature-controlled plastic deformation strengthen;

4. The equipment provided by the utility model has a simple structure and can be effectively combined with the existing material manufacturing device. It is only necessary to add a deformation strengthening mechanism and an auxiliary temperature control mechanism to the existing material manufacturing equipment to obtain this equipment. The utility model is used to obtain the formed parts with refined grain structure and high mechanical properties.

Description of drawings

1 is a schematic structural diagram of a composite heat source rolling material manufacturing equipment constructed according to a preferred embodiment of the present invention.

Throughout the drawings, the same reference numbers are used to refer to the same elements or structures, wherein:

1-Power supply, 2-Material feeding mechanism, 3-Heating mechanism, 4-Auxiliary temperature control mechanism, 5-Deformation strengthening mechanism, 6-Forming platform, 7-Substrate, 8-Air supply mechanism.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

A composite heat source synchronous rolling material manufacturing equipment, the equipment includes an additive forming mechanism, a forming platform, an auxiliary temperature control mechanism and a deformation strengthening mechanism; the additive forming mechanism includes an additive forming power source 1 and a raw material feeding mechanism 2, the raw material The feeding mechanism sends the metal raw material to the front end of the forming heating mechanism 3, the metal raw material melts the metal into a liquid form under the action of the additive heating mechanism 3, and drives the additive forming heating mechanism 3 and the substrate 7 under the control of the numerical control code. Relative movement, the liquid droplet solidifies and forms on the substrate 7. During the forming process, the auxiliary temperature control mechanism 4 and the deformation strengthening mechanism 5 move synchronously with the additive forming heat source and the platform, and act on the currently just solidified metal droplet. , the auxiliary temperature control mechanism 4 uses a high-energy beam such as laser or plasma as a heat source for local heating, increasing the surface and internal temperature of the just-solidified forming area, and softening the deposition layer formed in the just-solidified area. The deformation strengthening mechanism 5 acts on the molten layer after heating and softening in the form of miniature rollers. Continuous rolling can produce plastic deformation on the molten layer, improve the surface and dimensional accuracy, and at the same time, the compressive stress generated by the roller can be localized. Grain structure, optimize stress distribution, improve forming performance and strength.

Further, the additive forming mechanism, the auxiliary temperature regulating mechanism 4 and the deformation strengthening mechanism 5 are preferably installed coaxially, wherein the preferred installation sequence is the additive forming mechanism, the auxiliary temperature regulating mechanism, the deformation strengthening mechanism, and the additive forming mechanism. It is interchangeable with the auxiliary temperature control mechanism, only to ensure that the temperature control of the currently formed part can be carried out.

Preferably, the auxiliary temperature control mechanism 4 is a high-energy beam heat source such as laser or plasma, which directly acts on the deposition layer to maintain and increase the temperature.

Preferably, the auxiliary temperature regulating mechanism 4 is not limited to local heating, but also includes local cooling.

Preferably, the deformation strengthening mechanism 5 preferably performs plastic deformation strengthening on the current forming part by means of continuous synchronous rolling, and the pressure deformation can refine the microstructure and grains and reduce the residual stress.

Preferably, the deformation strengthening mechanism 5 has one degree of freedom, which can realize up and down movement in the vertical direction, and preferably can increase the degree of freedom in rotation and other degrees of freedom in the horizontal direction, so as to realize conformal strengthening during curved additive manufacturing.

Preferably, the rolling of the deformation strengthening mechanism 5 can realize constant pressure rolling and constant height rolling through sensors.

Preferably, the strengthening form of the deformation strengthening mechanism 5 is not limited to the size and form of the roller, including flat rollers of different sizes, concave and convex rollers, and the like.

The additive forming mechanism is preferably a wire arc additive forming mechanism, including a welding machine, a welding torch, a wire feeder, and a gas source supply mechanism 8 and other related equipment. The wire feeder slowly rotates the coiled wire from the head of the welding torch. Cladding methods include MIGAW and NIGIG. Inert gas shielded welding is an arc welding method that uses a meltable wire as an electrode and an external gas as an arc medium to protect metal droplets, welding pools and high-temperature metals in the welding zone; non-melting electrode inert gas shielded arc welding is a An arc welding method that uses pure tungsten or activated tungsten as an infusible electrode and an external inert gas as a protective medium.

Preferably, the additive forming mechanism is not limited to arc wire forming devices, but also includes other metal wire or powder forming devices using high-energy beams as heat sources.

The forming platform 6 generates relative motion according to the motion trajectory planned in advance to realize the forming process. The trajectory is sliced by the path planning software to the part model, and the contour of each layer is filled in a certain way, such as parallel scanning, equidistant offset, etc. , get the NC code of trajectory and platform motion.

The installation form of the heat source and the auxiliary temperature control mechanism is not limited to the front and rear installation, and the front and rear positions can also be exchanged or not on the same axis, as long as the local or overall temperature effect of the cladding channel can be maintained and improved.

Compared with the existing additive technology, the composite heat source rolling additive manufacturing equipment of the utility model has the following advantages and effects: compared with the traditional metal additive manufacturing device, the utility model adds an auxiliary temperature control mechanism and a deformation strengthening mechanism. The mechanism can realize the composite reinforcement manufacturing of large and complex metal parts without losing efficiency.

Those skilled in the art can easily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and replacements made within the spirit and principles of the present invention Improvements, etc., should be included within the protection scope of the present invention.

Claims (7)

1. a composite heat source synchronous rolling increasing material manufacturing equipment, is characterized in that, this increasing material manufacturing equipment comprises forming platform, deformation strengthening mechanism, heating mechanism and auxiliary temperature regulating mechanism, wherein: The forming platform is used as a working table, and the heating mechanism is arranged above the forming platform. After the wire to be formed is melted by the heating mechanism, droplets are formed and drop on the forming platform, and rapidly solidify and form to form a fusion deposit. layer, the auxiliary temperature regulation mechanism is arranged on one side of the heating mechanism, the deformation strengthening mechanism is arranged behind the auxiliary temperature regulation mechanism, and the auxiliary temperature regulation mechanism is detected in real time on the forming table on the one hand The temperature of the solidified and formed fusion layer, on the other hand, according to the temperature detected in real time, the fusion layer is locally heated to soften it, and the deformation strengthening mechanism is used to apply pressure to the softened fusion layer. pressure, so that the softened fused layer will undergo uniform plastic deformation, the internal grain structure will be refined, and the mechanical properties will be improved; The heating mechanism, the auxiliary temperature control mechanism and the deformation strengthening mechanism move synchronously, so that the heating of the raw material, the auxiliary temperature control and the deformation strengthening are performed synchronously. 2 . The composite heat source synchronous rolling material manufacturing equipment according to claim 1 , wherein a laser or plasma high-energy beam heat source is used in the temperature control device to locally heat the solidified and formed deposited layer. 3 . 3. a kind of composite heat source synchronous rolling material manufacturing equipment as claimed in claim 1 or 2, is characterized in that, described temperature regulation mechanism is provided with cooling mechanism, when the temperature of described deposition layer exceeds preset temperature cooling it down. 4 . The composite heat source synchronous rolling material manufacturing equipment according to claim 1 , wherein the deformation strengthening mechanism uses a constant pressure or a constant height to roll the softened fusion layer. 5 . 5 . The composite heat source synchronous rolling material manufacturing equipment according to claim 1 , wherein the deformation strengthening mechanism adopts rollers. 6 . 6 . The composite heat source synchronous rolling augmentation material manufacturing equipment according to claim 1 , wherein the raw material of the augmented material manufacturing equipment is wire material or powder. 7 . 7 . The composite heat source synchronous rolling augmentation material manufacturing equipment according to claim 1 , wherein the augmentation material manufacturing equipment is carried out under an atmosphere of inert protective gas during the forming process. 8 .

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