CN211218677U

CN211218677U - Metal ceramic composite material additive manufacturing device

Info

Publication number: CN211218677U
Application number: CN201921028548.1U
Authority: CN
Inventors: 张晓伟
Original assignee: Kunshan Goldbug Robotics Technology Co ltd
Current assignee: Kunshan Goldbug Robotics Technology Co ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-08-11
Anticipated expiration: 2029-07-03

Abstract

A metal ceramic composite material additive manufacturing device comprises a wire feeding spray head, a raw material extruding device and a laser generator, wherein the raw material extruding device comprises a slurry tank and an extruding disc arranged in the slurry tank, the slurry tank is provided with a material guide pipe, the extruding disc is provided with a material guide rod penetrating through the material guide pipe, and the extruding disc is also connected with an extruding assembly used for pushing the extruding disc to move towards one side of the slurry tank; the thick liquids get into thick liquids groove after promote the crowded material disc through extrusion subassembly and move towards thick liquids groove one side, make the thick liquids in the thick liquids groove receive in gravity and the extrusion force gets into the guide pipe, and flow along the week side of guide bar, avoid thick liquids surface to gather spontaneously and form the secondary particle owing to long-pending surface energy of preserving, make the thick liquids shape and the mobility that flows along the guide bar satisfy technical requirement, send the silk shower nozzle to make the granule assemble in a bit and make thick liquids form the molten bath through laser generator, pile up the entity that forms metal ceramic composite in the space gradually.

Description

Metal ceramic composite material additive manufacturing device

Technical Field

The utility model relates to a metal matrix composite technical field, concretely relates to metal ceramic composite vibration material disk device.

Background

The metal ceramic composite material has some advantages of metal matrix material and ceramic reinforced material, such as toughness and bending resistance of the former, high temperature resistance, high strength, oxidation resistance and the like of the latter. At present, the preparation method for the metal ceramic composite material adopts a traditional fusion casting method or a powder metallurgy method and a machining mode. The traditional casting method has the problems that the solidification rate of the melt is slow, the shape, the quantity and the distribution of the reinforcing phase are difficult to realize by directly controlling in a casting mold, and the like; the powder metallurgy method has the problems of low product strength, difficult structural change and modification and the like.

Laser additive manufacturing is used as a material rapid forming method, and has remarkable advantages in the forming manufacturing aspect of metal ceramic composite materials, and at present, two methods are mainly used for laser additive manufacturing of metal ceramic composite materials, wherein one method is a selective laser melting (also called SLM) technology based on a powder bed, and the other method is a laser near net shaping (also called LENS) technology based on coaxial powder feeding. These two techniques have high requirements on the morphology of the powder material used, the former requiring that the powder material be spherical and that the powder particle size be generally in the order of microns (1 μm to 100 μm); the latter, although not placing strict requirements on the morphology of the powder, requires that the powder material must have good flow properties.

However, in most industrial metal or ceramic powders, the particles adhere to adjacent particles and sometimes form chains or more complex shapes, and the flowability is poor, especially in ultrafine powders of submicron or even nanometer size, and the particles tend to spontaneously aggregate into secondary particles due to their high surface energy stored by the developed surface area, and the shape and flowability obviously do not satisfy the LENS technical requirements, and there is an improvement in the prior art.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides a metal ceramic composite vibration material disk device promotes the crowded material disc through extrusion subassembly, and the granule that makes the adhesion through the extrusion of crowded material disc and thick liquids groove gets into between passage and the guide pole and flows from the week side of guide pole, send a shower nozzle to make the granule assemble in a bit and make thick liquids form the molten bath through laser generator, in the space point by point, line by line, successive layer pile up the entity that forms metal ceramic composite.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a metal ceramic composite material vibration material disk device, is including sending a shower nozzle, raw and other materials extrusion device and laser generator, raw and other materials extrusion device is including thick liquids groove and setting up crowded material disc in the thick liquids groove, the thick liquids groove is provided with the passage, crowded material disc is provided with and runs through the guide pole of passage, still be connected with on the crowded material disc and be used for promoting crowded material disc orientation the extrusion subassembly of thick liquids groove one side motion.

Through adopting above-mentioned technical scheme, the operator will be used for fashioned thick liquids to the thick liquids inslot, promote crowded material disc through extrusion subassembly and move towards thick liquids inslot one side, make the thick liquids in the thick liquids inslot receive gravity and extrusion force and get into in the guide pipe, and flow along the week side of guide pole, avoid thick liquids surface to gather spontaneously and form the secondary particle owing to the surface energy of depositing, make the thick liquids shape and the mobility that flows along the guide pole satisfy LENS's technical requirement, send the silk shower nozzle to make the granule assemble in a point and make the thick liquids form the molten bath through laser generator, pile up the entity that forms cermet combined material point by point in the space, line by line, the successive layer.

The utility model discloses further set up to: the extrusion assembly comprises a motor and a screw connected with the motor through a coupler, a transmission sleeve used for sleeving the screw is arranged on the extrusion disc, and the transmission sleeve is in threaded fit with the screw through a transmission nut.

Through adopting above-mentioned technical scheme, the motor drives the screw rod after rotating and rotates, screw-thread fit between transmission sleeve is to the screw rod, transmission sleeve slides on the screw rod along with the rotation of screw rod, crowded material disc takes place the extrusion through the thick liquids of transmission sleeve with the thick liquids inslot, the mode through screw-thread drive is on the one hand in order to guarantee that crowded material disc is at extrusion in-process feed volume stable, thereby it is stable to guarantee along the thick liquids volume of guide pole outflow, on the other hand has sufficient pressure to extrude the thick liquids in the thick liquids inslot in order to guarantee crowded material disc.

The utility model discloses further set up to: the material extruding disc is provided with a feeding hole in an extending mode, and the feeding hole penetrates through the material extruding disc.

Through adopting above-mentioned technical scheme, the operator of being convenient for adds thick liquids to between crowded material disc and thick liquids groove.

The utility model discloses further set up to: a feeding pipe extends from the feeding port.

Through adopting above-mentioned technical scheme, make can get into the thick liquids inslot through the feed pipe with thick liquids, be convenient for add thick liquids, reduce the waste of thick liquids.

The utility model discloses further set up to: the slurry tank is provided with an annular tank body, the material guide pipes are uniformly distributed along the periphery of the annular tank body, the extruding disc is arranged in a circular arc shape, and the extruding disc is embedded in the annular tank body.

By adopting the technical scheme, the storage capacity of the slurry in the slurry tank is reduced, and the demand of the slurry in the working process of the device is reduced, namely a small amount of slurry can work normally.

The utility model discloses further set up to: the passage has the passageway, the passageway is close to slurry tank one side is the throat and is provided with the neck mouth, the guide pole is including neck mouth clearance fit's pole body and setting are in the butt piece of this end of body of pole, the butt piece slides and sets up in the passageway, the butt piece with neck mouth department butt.

Through adopting above-mentioned technical scheme, the thick liquids in the thick liquids groove receive the extrusion back of crowded material disc, and in the thick liquids passed through the necking down mouth entering channel, the thick liquids in the passageway flowed along the guide pole, when butt joint piece and necking down mouth butt, stopped the outflow because the less thick liquids that makes in the passageway of necking down mouth diameter.

The utility model discloses further set up to: the necking opening is a waist-shaped groove, and the rod body is arranged corresponding to the necking opening.

Through adopting above-mentioned technical scheme, the necking down mouth that waist type groove set up and the pole body that corresponds the setting with waist type groove can restrict the rotation of guide material pole to reduce the rocking of crowded material disc in extrusion process.

The utility model discloses further set up to: a chamfer is arranged between the neck reducing opening and the channel, and the butt joint block is abutted to the chamfer.

By adopting the technical scheme, the butt joint block is in line-surface contact with the chamfer, the airtight effect when the butt joint block is abutted against the necking opening is further improved, and slurry is prevented from flowing out in the airtight process.

To sum up, the utility model discloses following technological effect has:

1. the adhered slurry enters the material guide pipe in an extrusion mode, and the slurry has good fluidity through a gap between the material guide pipe and the material guide rod, so that the requirement of additive manufacturing is met;

2. the extrusion assembly selects a thread transmission mode to ensure that the feeding amount of the extrusion disc is stable in the extrusion process so as to ensure that the amount of the slurry flowing out along the guide rod is stable, and the extrusion assembly also ensures that the extrusion disc has enough pressure to extrude the slurry in the slurry tank;

3. the material guide rod is matched with the material guide pipe, so that the outflow and stop of the slurry can be conveniently controlled in the production process.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below.

Fig. 1 is a schematic view of the overall structure of a metal ceramic composite material additive manufacturing device;

FIG. 2 is a schematic view of a raw material extruding apparatus;

FIG. 3 is a schematic view of a press assembly;

FIG. 4 is a schematic view of the structure of the material guiding tube and the material guiding rod;

fig. 5 is a flow chart of an additive manufacturing production method.

In the figure: 1. a laser generator; 2. a laser transmission pipeline; 3. a feeding port; 4. extruding a disc; 5. a slurry tank; 5. a wire feeding spray head; 7. a servo motor; 8. a coupling; 9. a screw; 10. a drive sleeve; 11. a fixing member; 12. a material guide pipe; 121. A channel; 122. a neck 13 and a T-shaped material guide rod; 131. a butting block; 14. and a drive nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, a metal ceramic composite material additive manufacturing device comprises a wire feeding nozzle, a raw material extruding device and a laser generator, and is combined with fig. 2, wherein the raw material extruding device comprises a slurry tank and an extruding disc arranged in the slurry tank, the slurry tank is provided with a material guide pipe, the extruding disc is provided with a material guide rod penetrating through the material guide pipe, and the extruding disc is also connected with an extruding component used for pushing the extruding disc to move towards one side of the slurry tank. The slurry groove is provided with an annular groove body, the guide pipes are uniformly distributed along the periphery of the annular groove body, the extruding disc is arranged in an arc annular shape, and the extruding disc is embedded in the annular groove body.

As shown in fig. 3, the extruding assembly includes a servo motor and a screw rod connected to the servo motor through a coupling, a transmission sleeve for sleeving the screw rod is disposed on the extruding disc, and the transmission sleeve is in threaded fit with the screw rod through a transmission nut.

As shown in the combined figure 4, the guide pipe is provided with a channel, one side of the channel, which is close to the slurry tank, is provided with a necking port, the guide rod comprises a rod body with the necking port in clearance fit and a butt block arranged at the end part of the rod body, the butt block is arranged in the channel in a sliding manner, and the butt block is abutted against the necking port. The necking opening is arranged in a waist-shaped groove, and the rod body is arranged corresponding to the necking opening; a chamfer is arranged between the neck-reducing opening and the channel, and the abutting block abuts against the chamfer.

In order to facilitate an operator to place the slurry into the slurry tank, a feeding hole extends in the extruding disc, the feeding hole penetrates through the extruding disc, and a feeding pipe extends in the feeding hole.

Referring to fig. 5, a production method using the above metal ceramic composite material additive manufacturing apparatus is implemented as follows:

s1, establishing a three-dimensional model of the formed metal part, carrying out layering processing on the three-dimensional model according to the forming precision requirement of the metal part, inputting layered data into a forming control system, and starting the forming control system;

s2: the control system enables the screw rod to rotate through the control motor, the abutting block at the lower end of the material guide rod abuts against a necking port in the material guide pipe through the transmission sleeve, and an operator enables slurry to be located between the slurry tank and the material extruding disc through the feeding port;

s3: the control system controls the servo motor to enable the screw to rotate, the extruding disc extrudes the slurry in the slurry tank through the transmission sleeve, the abutting block is separated from the necking opening, and the extruded slurry flows out along the material guide pipe;

s4: the wire feeding nozzle enables the intersection point of the three paths of wires to coincide with the laser spot to form a molten pool, and the molten pool is piled up layer by layer point by point, line by line and layer by space to form the metal ceramic composite material entity.

It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a metal ceramic composite material vibration material disk device, is including sending a shower nozzle, raw and other materials extrusion device and laser generator, its characterized in that, raw and other materials extrusion device is including thick liquids groove and setting up crowded material disc in the thick liquids groove, the thick liquids groove is provided with the passage, crowded material disc is provided with and runs through the guide bar of passage, still be connected with on the crowded material disc and be used for promoting crowded material disc orientation the extrusion subassembly of thick liquids groove one side motion.

2. The metal-ceramic composite material additive manufacturing device according to claim 1, wherein the extrusion assembly comprises a motor and a screw rod connected with the motor through a coupler, a transmission sleeve for sleeving the screw rod is arranged on the extrusion disc, and the transmission sleeve is in threaded fit with the screw rod through a transmission nut.

3. The additive manufacturing device for metal-ceramic composite materials according to claim 1, wherein a feeding hole extends through the extrusion disc.

4. The metal-ceramic composite material additive manufacturing device according to claim 3, wherein a feeding pipe extends from the feeding port.

5. The metal ceramic composite material additive manufacturing device according to claim 1, wherein the slurry tank is provided with an annular tank body, the material guide pipes are uniformly distributed along the periphery of the annular tank body, the extrusion disc is arranged in an arc-shaped annular shape, and the extrusion disc is embedded in the annular tank body.

6. The metal ceramic composite material additive manufacturing device according to claim 1 or 5, wherein the guide tube has a channel, a neck is arranged on a side of the channel close to the slurry tank in a necking manner, the guide rod comprises a rod body with a clearance fit with the neck and an abutting block arranged at the end of the rod body, the abutting block is slidably arranged in the channel, and the abutting block abuts against the neck.

7. The cermet composite material additive manufacturing device of claim 6, wherein the necking is a kidney-shaped groove, and the rod body is arranged corresponding to the necking.

8. The cermet composite material additive manufacturing device of claim 7, wherein a chamfer is provided between the neck-down and the channel, and the abutment block abuts against the chamfer.