CN204658960U

CN204658960U - The 3DP printer that a kind of dsp chip controls

Info

Publication number: CN204658960U
Application number: CN201520217761.2U
Authority: CN
Inventors: 王俊
Original assignee: Beijing Shang Tuo Science And Technology Ltd
Current assignee: Beijing Shang Tuo Science And Technology Ltd
Priority date: 2015-04-13
Filing date: 2015-04-13
Publication date: 2015-09-23
Anticipated expiration: 2025-04-13

Abstract

The utility model discloses the 3DP printer that a kind of dsp chip controls, comprise controller, ink-jet system, moving component and accessory, dsp chip selected by described controller, the input/output terminal of described dsp chip is connected to a dual port RAM, the input and output termination one pci interface core of described dual port RAM, input and output termination one pci bus of described pci interface core, the input/output terminal of described pci interface core is also connected to a memory and a PLD, the output of described dsp chip is connected to a photoelectrical coupler, input and output termination one motor-drive circuit of described photoelectrical coupler, general purpose I/O signaling interface and a temperature controller.Adopt dsp chip control 3DP to be very suitable, and in the management to slave computer print data, transmission, motor motion control, shower nozzle jet binder and the cooperation control of motor movement, the detection etc. of print procedure signal, there is obvious advantage.

Description

The 3DP printer that a kind of dsp chip controls

Technical field

The utility model relates to the 3DP printer that a kind of dsp chip controls.

Background technology

3d printing technique (3DP ^tM) developed in 1993 by Massachusetts Institute Technology (MIT) the earliest.This technology will be covered with each layer solidification of powder, to create 3D solid prototype by using liquid union body.Based on 3DP technology, Z Corp company of the U.S. develops 3d printing shaping machine.3d printer uses standard ink jet inks printing technique, by being laid on powder thin layer by liquid union body, successively creates each parts.Different from the paper feeding under printhead of 2d inkjet printer, 3d printer is mobile print head above one deck powder, prints cross-sectional data.

At present, the problem that the 3D printer ubiquity printing precision of domestic independent research is not high.

The printing action of normal printer is made up of X-axis and Y-axis, and X-axis is responsible for printing lines, and Y-axis is responsible for driving paper, by drawing the mode of continuous print lines on paper, is superimposed as two-dimensional pattern.Printer control program, for improving printing effect, can optimize X-axis and Y-axis Motion, namely according to the pattern that will print, only shower nozzle is positioned at the position needing to print.Therefore, X-axis and Y-axis move distance are not fixed values, and each run duration also can be variant.For being reduced at the control to improved printer in 3 D-printing formation system, printing bitmap add upper side frame by every layer, X is to move distance when printing with Y-direction at every turn in restriction.After adding upper side frame, the distance that X-axis is moved at every turn is identical, and run duration is also identical, and Y-direction motion moves with fixed time interval; Because Y-direction pattern is continuous print, the distance that Y-direction motion moves at every turn is also identical.By the Distance geometry paper feed time of each paper feed of the former printer of test, the Distance geometry time that Y-direction motion moves at every turn can be decided.After adding upper side frame, increasing and print solution and dusty material consumption, this adverse effect can be reduced by reducing border width.Meanwhile, due to the existence of frame, there is certain effect of contraction to the distortion of print area, can formed precision be improved.

Summary of the invention

Technical problem to be solved in the utility model be to provide a kind ofly adopt dsp chip to control, 3DP printer that dsp chip that control accuracy is high controls.

The utility model is achieved through the following technical solutions: the 3DP printer that a kind of dsp chip controls, it is characterized in that: comprise controller, ink-jet system, moving component and accessory, dsp chip selected by described controller, described moving component comprises a forming bin and powder-storage bin piston elevating movement mechanism, X is to motion, Y-direction motion and paving powder motor, described X is directly controlled to motion by the print routine of former printer, the input/output terminal of described dsp chip is connected to a dual port RAM, the input and output termination one pci interface core of described dual port RAM, input and output termination one pci bus of described pci interface core, the input/output terminal of described pci interface core is also connected to a memory and a PLD, the input/output terminal of described dsp chip is also connected to a jtag interface and a static RAM, the output of described dsp chip is connected to a photoelectrical coupler, input and output termination one motor-drive circuit of described photoelectrical coupler, general purpose I/O signaling interface and a temperature controller.

As preferred technical scheme, described temperature controller comprises a temperature sensor, A/D modular converter, bidirectional thyristor and heating resistor, and described temperature sensor is connected with A/D modular converter.

As preferred technical scheme, described paving powder motor adopts DC motor Driver, and described forming bin, powder-storage bin piston elevating movement mechanism and Y-direction motion are all by SH2034D driving stepper motor.

The beneficial effects of the utility model are: adopt dsp chip to control, and in the management to slave computer print data, transmission, motor motion control, shower nozzle jet binder and the cooperation control of motor movement, the detection etc. of print procedure signal, there is obvious advantage.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is control system general illustration of the present utility model;

Fig. 2 is motor movement closed-loop system schematic diagram;

Fig. 3 is the system schematic of scaling board;

Fig. 4 is the master-plan block diagram of EBI.

Detailed description of the invention

All features disclosed in this description, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.

Arbitrary feature disclosed in this description (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.

As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, the 3DP printer that a kind of dsp chip of the present utility model controls, it is characterized in that: comprise controller, ink-jet system, moving component and accessory, dsp chip selected by described controller, described moving component comprises a forming bin and powder-storage bin piston elevating movement mechanism, X is to motion, Y-direction motion and paving powder motor, described X is directly controlled to motion by the print routine of former printer, the input/output terminal of described dsp chip is connected to a dual port RAM, the input and output termination one pci interface core of described dual port RAM, input and output termination one pci bus of described pci interface core, the input/output terminal of described pci interface core is also connected to a memory and a PLD, the input/output terminal of described dsp chip is also connected to a jtag interface and a static RAM, the output of described dsp chip is connected to a photoelectrical coupler, input and output termination one motor-drive circuit of described photoelectrical coupler, general purpose I/O signaling interface and a temperature controller, temperature controller comprises a temperature sensor, A/D modular converter, bidirectional thyristor and heating resistor, and described temperature sensor is connected with A/D modular converter.

Paving powder motor adopts DC motor Driver, and described forming bin, powder-storage bin piston elevating movement mechanism and Y-direction motion are all by SH2034D driving stepper motor.

In the motion of whole motor, pulse signal is sent by dsp chip and passes to motor by photoelectric coupling, and the state of motor also through the anti-pass of feedback device encoder to dsp chip, thus can form the Circuits System of a closed loop, ensure that the accuracy of printing.

DSP, except the motion of major control motor, also guarantees 3 D-printing forming temperature constantly.Middle signal transmission bridge is still by the mode of photoelectric coupling.

Visible, be in vital effect in the middle of the precision that dsp chip prints at control 3D.Interleave a dual port RAM at dsp chip and PCI, needed between the system bus of host computer and dsp chip by a large amount of data dissemination reliably, if they too much take CPU, CPU inefficiency can have been caused.Use dual port RAM, exchange the part that information both sides CPU is worked as the memory that is Myself, so not only improve the service efficiency of both sides CPU but also ensure data communication reliably at a high speed.

As shown in Figure 4, mouth RAM is responsible for the exchanges data realizing PCI9052 and DSP, electric pressure converter has been used for the level conversion between DSP and dual port RAM, and CPLD then realizes the logic circuit such as DSP, PCI9052 and the address decoding needed for the triangular communication of dual port RAM.

Wherein, adopt CPLD as programmable logic device, there is following advantage:

1. the circuit design during FPGA realizes with software; If will circuit be changed like this, only need, with the circuit designed by software change, need not pcb board be redesigned, substantially increase the flexibility of design.

2. one piece of PLD just can realize complicated digital circuitry, and the device greatly reducing system uses number, can save pcb board area, power supply power consumption and debug time like this, reaches the object shortening the construction cycle and reduce costs.

The above, be only detailed description of the invention of the present utility model, but protection domain of the present utility model is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should limit with claims is as the criterion.

Claims

1. the 3DP printer of a dsp chip control, it is characterized in that: comprise controller, ink-jet system, moving component and accessory, dsp chip selected by described controller, described moving component comprises a forming bin and powder-storage bin piston elevating movement mechanism, X is to motion, Y-direction motion and paving powder motor, described X is directly controlled to motion by the print routine of former printer, the input/output terminal of described dsp chip is connected to a dual port RAM, the input and output termination one pci interface core of described dual port RAM, input and output termination one pci bus of described pci interface core, the input/output terminal of described pci interface core is also connected to a memory and a PLD, the input/output terminal of described dsp chip is also connected to a jtag interface and a static RAM, the output of described dsp chip is connected to a photoelectrical coupler, input and output termination one motor-drive circuit of described photoelectrical coupler, general purpose I/O signaling interface and a temperature controller.

2. the 3DP printer of dsp chip control according to claim 1, is characterized in that: described temperature controller comprises a temperature sensor, A/D modular converter, bidirectional thyristor and heating resistor, and described temperature sensor is connected with A/D modular converter.

3. the 3DP printer of dsp chip control according to claim 1, is characterized in that: described paving powder motor adopts DC motor Driver, and described forming bin, powder-storage bin piston elevating movement mechanism and Y-direction motion are all by SH2034D driving stepper motor.