A kind of five-axle linkage 3D printer mechanism
Technical field
The present invention relates to a kind of five-axle linkage 3D printer mechanisms.Specifically one kind is using digital model file as base
Plinth is sliced, with adhesive materials such as special wax material, powdery metal or plastics, the extrusion controlled by parallel institution
Head realizes the mobile printing of x, y, z axis, and the lower moving platform of two screw drive controls is realized the rotating print of u, v axis, then used
Jointing material from level to level manufactures the 3D printer of three-dimensional object, belongs to 3D printer field.
Background technique
3D printing brings world's manufacturing industry revolution, has overturned traditional production method, needs a kind of achievable multiaxis and beats
The 3D printer of print.Traditional 3 D-printing device generally uses worm drive, controls three directions of x, y, z axis of extruder head
Movement, working efficiency is low, and because of the limitation of three axis printing and material, object hanging structure occurs and easily collapse, and designs
Shortcomings are not able to satisfy multi-field application demand.
The 3D printer of existing maturation only stops the printing of 3 axis, and the application of 3D printing will be greatly expanded in the printing of five axis.
Because constructing object by accumulation manufacture, successively printing, although the very thin section of each layer of printing, in the side X-Y
Raising to resolution ratio is very restricted, and will form certain thickness level-one grade " step ", if you need to the object table of printing
Face is curved arc, will lead to accuracy error, can just obtain smooth " high-resolution " article in surface by surface polishing;It adopts
Suface processing quality can greatly be improved with five-axle linkage 3D printer.
Traditional 3D printer can also use supporter during printing, such as print some objects for having projecting shape, then
The material (such as soluble material) for being easy to remove a bit need to be used as supporter.3 axis 3D printers then can not always along A to printing
Improve, five-axle linkage 3D printer change A to 90 ° of sides turn direction print, the structural issue of transitional region can be solved.
Summary of the invention
For the above-mentioned problems that 3D printer is existing, the present invention provides a kind of five-axle linkage 3D printer mechanism.Tool
Body is said, is the mobile printing that x, y, z axis is realized by the extruder head that parallel institution controls, and two the lower of screw drive control move
Platform realizes the rotating print of u, v axis, completes the 3D printer that five-axle linkage prints three-dimension object on lower moving platform.
Present invention provide the technical scheme that
A kind of five-axle linkage 3D printer mechanism, described device include airframe systems, control system, print system, display
System.Airframe systems are made of support rod, sliding block, synchronous belt, synchronous pulley, joint ball a, rack;Control system is by control mould
Block composition;Print system is by hinge, spherical pair a, outer framework, extruder head, fan, threaded fastener a, v-shaped plate, parallel arm, spiral shell
Line fastener b, upper moving platform, joint ball b, lower moving platform;Screw rod a, the shaft coupling a that is flexible coupling, motor a, spherical pair b, motor b,
Be flexible coupling shaft coupling b, screw rod b composition;Display system is made of control system, display screen.
Rack supports all components, is hollow equilateral triangular prism, two one group of support rod, respectively arranges one at three seamed edges
Group does the linear guide to pump for constituting sliding block;Meanwhile a synchronous pulley is respectively arranged up and down in three seamed edges,
Power, toothed belt transmission are provided by lower section motor.Sliding block is matched by sliding bearing and support rod, is blocked by internal concaveconvex structure
One side of synchronous belt.Upper moving platform, sliding block pass through one group of joint ball b respectively, joint ball a is connected in the both ends of a pair of of parallel arm,
Parallelogram mechanism is constituted, mechanical stability and rigidity are improved.Fan is fixed on v-shaped plate, v-shaped by threaded fastener a
Plate is fixed on upper moving platform by threaded fastener b, guarantees that fan is angled with extruder head, is easy to radiate to it.
Extruder head is fixed on moving platform, and there is spring bearing in upper end, there is spiral shape engraved structure, is easy to disperse the heat of material hot melt
Amount.
Spherical pair a main body is one rod-shaped, is connected by a sponson and hinge, end is a spherical surface, outside outer framework
Boom matching ends constitute spherical pair;Bar portion couples a nut, matches with screw rod b.The shaft coupling b that is flexible coupling couples motor b
Rotor, screw rod b.Similarly, spherical pair b couples overhanging bar portion under lower moving platform, constitutes spherical pair;Pass through the one of the fixation of bar portion
Nut is matched with screw rod a;It is connected also through a sponson and hinge.The shaft coupling a screw connection that is flexible coupling a, motor a turn
Son is allowed to rotate jointly.
The motor of control module with three driving synchronous pulley work is arranged under rack.By computer modeling, then will
Digital model file slice, to instruct print system co-ordination, successively prints three-dimension object.Extruder head filament mouth is equipped with pressure
Force snesor.When the 3D printer works, squeezed out after material hot melt by extruder head, while fan radiates for it.Extruder head is close
Distance contact reaches setting value to pressure, and pressure sensor perceives at once, information is fed back to control module, then rotation speed of the fan
It reduces, guarantees that the spinning of hot melt can be adhered to lower moving platform.When reaching setting value between when operating, pressure sensor stops work
Make, rotation speed of the fan restores normal.Control module controls motor coordination work, synchronized band primary transmission, parallelogram mechanism
Secondary transmission, by movement output to upper moving platform, extruder head is moved synchronously, and three directions of x, y, z axis of extruder head can be realized
Movement.Control module also controls motor a, motor b co-ordination, and screw rod a, screw rod b are rotated, two screw rods worm drive, in turn
Hinge folding, through flexural pivot realize outer framework, lower moving platform around u, v axis turn round, reach the printing of the 4th axis, the 5th axis, complete
Five-axle linkage prints three-dimension object.Process (working time, print thickness, remaining working time etc.) is output to by control module
Display screen.
The beneficial effects of the present invention are:
The present invention be to provide a kind of five-axle linkage 3D printer mechanism, which has the following characteristics that
1. the present invention controls upper moving platform (15) and does three degree of freedom movement, lower moving platform (17) does two freedom degree fortune
It is dynamic, then realize that five-axle linkage prints 3D solid, improves print quality;
2. five-axle linkage mechanism of the invention is, it can be achieved that moving and returning around u, v axis of x, y, z axis direction along x, y, z axis
Turn, i.e., object to be printed can do rotary motion, dramatically improve printing technology;
3. motor a (20) of the invention, motor b (23) co-ordination, screw rod a (18), screw rod b (25) rotation, two screw rods
Transmission, and then hinge (1) opens and closes, and realizes that outer framework (3), lower moving platform (17) rotate through flexural pivot;
4. the present invention change it is traditional along A to do X-Y plane layering processing, superposition molding printing objects mode, it is interchangeable in B
It mutually prints, very good solution structural strength, precision problem.
Detailed description of the invention
A kind of main view of five-axle linkage 3D printer of Fig. 1 mechanism
A kind of axonometric drawing of five-axle linkage 3D printer of Fig. 2 mechanism
A kind of 3-freedom parallel mechanism partial enlargement diagram of five-axle linkage 3D printer of Fig. 3 mechanism
A kind of two screw rods of five-axle linkage 3D printer of Fig. 4 mechanism are driven partial enlargement diagram
In figure, 1, hinge;2, spherical pair a;3, outer framework;4, support rod;5. extruder head;6, fan;7, threaded fastener
a;8, v-shaped plate;9, parallel arm;10, sliding block;11, synchronous belt;12, synchronous pulley;13, joint ball a;14, threaded fastener b;
15, upper moving platform;16, joint ball b;17, lower moving platform;18, screw rod a;19, be flexible coupling shaft coupling a;20, motor a;21 spherical surfaces
Secondary b;22, rack;23, motor b;24, be flexible coupling shaft coupling b;25, screw rod b.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Invention is mainly made of airframe systems, control system, print system, display system.
It is hollow equilateral triangular prism as shown in Fig. 2, rack (22) supports all components, (4) two one group of support rod,
One group is respectively arranged at three seamed edges, does the linear guide to pump for constituting sliding block (10);Meanwhile in three seamed edges
It respectively arranges a synchronous pulley (12) up and down, provides power by lower section motor.Sliding block (10) is by sliding bearing and support rod (4) phase
Match, one side of synchronous belt (11) is blocked by internal concaveconvex structure, realizes synchronous belt (11) transmission.
As shown in figure 3, upper moving platform (15), sliding block (10) are joined by one group of joint ball b (16), joint ball a (13) respectively
The both ends of a pair of of parallel arm are connected to, parallelogram mechanism is constituted, improves mechanical stability and rigidity.Fan (6) passes through spiral shell
Line fastener a (7) is fixed on v-shaped plate (8), and v-shaped plate (8) is fixed on moving platform (15) by threaded fastener b (14), is guaranteed
Fan (6) and extruder head (5) are angled, are easy to radiate to it.Extruder head (5) is fixed on moving platform (15), on
There is spring bearing in end, there is spiral shape engraved structure, is easy to disperse the heat of material hot melt.
As shown in figure 4, spherical pair a (2) main body is one rod-shaped, it is connected by a sponson and hinge (1), end one
Spherical surface is matched with outer framework (3) overhanging boom end, constitutes spherical pair;Bar portion couples a nut, matches with screw rod b (25).
Be flexible coupling shaft coupling b (24) connection motor b rotor (23), screw rod b (25).Similarly, spherical pair b (21) couples lower moving platform (17)
Under overhanging bar portion, constitute spherical pair;By a nut of the fixation of bar portion, matched with screw rod a (18);It is overhanging also through one
Part is connected with hinge (1).Be flexible coupling shaft coupling a (19) screw connection a (18), motor a (20) rotor.
As shown in Fig. 2, arranging the motor of control module with three driving synchronous pulley (12) work under rack (22).It is logical
Computer modeling is crossed, then digital model file is sliced, to instruct print system co-ordination, successively prints three-dimension object.
Extruder head (5) filament mouth is equipped with pressure sensor.When the 3D printer works, through being squeezed out by extruder head (5) after material hot melt, together
When fan (6) radiate for it.Extruder head (5) close contact to pressure reaches setting value, and pressure sensor perceives at once, will believe
Breath feeds back to control module, and then fan (6) revolving speed reduces, and guarantees that the spinning of hot melt can be adhered to lower moving platform (17).Work as work
When reaching setting value as the time, pressure sensor stops working, and fan (6) revolving speed restores normal.Control module controls motor association
Adjust work, synchronized band (11) primary transmission, parallelogram mechanism secondary transmission, by movement output to upper moving platform (15),
Extruder head (5) moves synchronously, and the movement in three directions of x, y, z axis of extruder head (5) can be realized.Control module also controls motor
A (20), motor b (23) co-ordination, screw rod a (18), screw rod b (25) rotation, two screw rods worm drive, and then hinge (1) is opened
Close, through flexural pivot realize outer framework (3), lower moving platform (17) around u, v axis turn round, reach the printing of the 4th axis, the 5th axis, complete
Five-axle linkage prints three-dimension object.Process (working time, print thickness, remaining working time etc.) is output to by control module
Display screen.