CN106959705A - A kind of precision of powder laying compensation system and method for quickly shaping device - Google Patents
A kind of precision of powder laying compensation system and method for quickly shaping device Download PDFInfo
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- CN106959705A CN106959705A CN201710300409.9A CN201710300409A CN106959705A CN 106959705 A CN106959705 A CN 106959705A CN 201710300409 A CN201710300409 A CN 201710300409A CN 106959705 A CN106959705 A CN 106959705A
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- 238000007493 shaping process Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000000843 powder Substances 0.000 title claims abstract description 31
- 230000003287 optical effect Effects 0.000 claims abstract description 157
- 230000007246 mechanism Effects 0.000 claims abstract description 104
- 229910002114 biscuit porcelain Inorganic materials 0.000 claims abstract description 94
- 230000007423 decrease Effects 0.000 claims abstract description 46
- 230000008569 process Effects 0.000 claims abstract description 20
- 230000007480 spreading Effects 0.000 claims abstract description 14
- 238000003892 spreading Methods 0.000 claims abstract description 14
- 230000001174 ascending effect Effects 0.000 claims abstract description 5
- 230000003028 elevating effect Effects 0.000 claims abstract description 4
- 230000000630 rising effect Effects 0.000 claims description 26
- 238000000227 grinding Methods 0.000 claims description 13
- 230000008450 motivation Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000013461 design Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/10—Formation of a green body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/30—Platforms or substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/60—Planarisation devices; Compression devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/31—Calibration of process steps or apparatus settings, e.g. before or during manufacturing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a kind of precision of powder laying compensation system and method for quickly shaping device, the system includes the power spreading device being arranged on quickly shaping device base plate and the control main frame for controlling compensation power spreading device lifting, and power spreading device includes optical axis, bisque self-powered platform and the installing plate for installing optical axis lift drive mechanism；The method comprising the steps of：First, the lifting clearance value of optical axis lift drive mechanism is obtained；2nd, control optical axis lift drive mechanism ascending path, 201, optical axis lift drive mechanism rise initialization, 202, optical axis lift drive mechanism rise compensation, 203, optical axis lift drive mechanism decline calibration；The 3rd, the lifting work distance of bisque self-powered platform is set；4th, the elevating control of bisque self-powered platform.The present invention reduces optical axis lift drive mechanism and rises the calibration for turning to decline, the running precision and reliability of the bisque self-powered platform of raising by terminating optical axis lift drive mechanism uphill process with decline state.
Description
Technical field
The invention belongs to the kinematic accuracy compensation technique field of the powdering mechanism of quickly shaping device, and in particular to Yi Zhongyong
In the precision of powder laying compensation system and method for quickly shaping device.
Background technology
Using powder as raw material in RP technique, deposit/sinter by constituency/melting process carries out the fast short-term training of part
Shape technology is the focus of quick manufacture area research at present, and existing constituency sintering technology is completed by way of demixing scan
The process of part.In process, one layer is often processed, powdering workbench declines a certain distance, powder feeder is sent out
A certain amount of powder is paved by powdering mechanism again, and then this layer of powder is sintered, and constantly repeats this process,
It is finally completed processing.The kinematic accuracy of powdering workbench, determines the thickness of powdering layer and the size of powder bed density, direct shadow
The density of sintered part is rung, so as to influence the physical property of sintered part, contraction and buckling deformation and corner angle definition.Process
Can the quality of the quality influence product of middle powdering process, or even process proceed.
When existing powdering workbench carries out commutation motion, because motor, in rotating, causes powdering in powdering mechanism
Mechanism middle (center) bearing can produce clearance, the precise decreasing caused.By repeated measurement, this clearance only appears in the after commutation
Once rise or action of going into the well in, the equidirectional kinematic accuracy continuously risen or fallen is more accurate.Therefore, nowadays lack
A kind of simple in construction, low cost, reasonable in design, kinematic accuracy it is high for quickly shaping device precision of powder laying compensation system and
Method, the clearance for carrying out commutation motion generation by powdering workbench is compensated and calibrated, and realization is coated with out uniform, zero defect
And the powder bed with higher density.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of be used for quickly
The precision of powder laying compensation system of former, it is novel in design rationally, by gathering in optical axis lift drive mechanism lifting process
The lifting clearance value produced is turned to, it is calibrated using control main frame and controlled motor module is accurately rotated, Jin Erti
The kinematic accuracy of high bisque self-powered platform, realizes and is coated with out uniform, zero defect and the powder bed with higher density, be easy to push away
Extensively use.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of powdering for quickly shaping device
Precision compensation system, it is characterised in that：Including the power spreading device on quickly shaping device base plate and for controlling compensation
The control main frame of power spreading device lifting, the power spreading device include passing perpendicularly through quickly shaping device base plate and with fast short-term training
Optical axis that shape equipment bay is slidably matched, it is horizontally set on optical axis top and the bisque liter for laying bisque for workpiece to be formed
Installing plate of the drop workbench with optical axis bottom is arranged on and for installing optical axis lift drive mechanism, the optical axis elevator drive machine
Structure is by being connected to the feed screw nut, drive that the leading screw and leading screw of quickly shaping device bottom base plate are slidably matched through installing plate
The belt pulley of feed screw nut rotation and the motor module composition for being connected and being rotated for driving belt pulley with pulley drive, it is described
Feed screw nut is embedded in installing plate and is fixedly connected with installing plate, and the bottom of bisque self-powered platform is provided with for measuring institute
State and the lifting clearance value of generation and the bottom surface of bisque self-powered platform are turned in optical axis lift drive mechanism lifting process and fast
The optical rangefinder of distance between the top surface of rapid-result shape equipment bay, the signal output part of optical rangefinder and control main frame it is defeated
Enter end to connect, motor module is by control main frame control.
A kind of above-mentioned precision of powder laying compensation system for quickly shaping device, it is characterised in that：The motor module
It is fixedly mounted on the side of installing plate.
A kind of above-mentioned precision of powder laying compensation system for quickly shaping device, it is characterised in that：The Quick-forming
The bottom of equipment bay is provided with base plate fixed plate, and optical axis passes perpendicularly through base plate fixed plate.
A kind of above-mentioned precision of powder laying compensation system for quickly shaping device, it is characterised in that：The control main frame
On be connected with memory and display, control main frame is computer or PLC.
A kind of above-mentioned precision of powder laying compensation system for quickly shaping device, it is characterised in that：The optical ranging
Instrument is infrared ambulator, and the infrared emitting end of the infrared ambulator is vertical with quickly shaping device base plate.
Meanwhile, it is simple the invention also discloses a kind of method and step, it is reasonable in design, it can improve in forming process and spread each time
The uniformity of bisque, the quickly shaping device of reliability precision of powder laying compensation method, it is characterised in that this method include with
Lower step：
Step 1: obtaining the lifting clearance value of optical axis lift drive mechanism：Bisque lifting work is set using control main frame
The standard stepping unit that platform rises or falls is apart from δ, by control main frame controlled motor module rotating, drives bisque lifting work
Make platform to move repeatedly up and down, when optical axis lift drive mechanism drives bisque self-powered platform to turn to rise by declining, using optics
Rangefinder obtains lower turn of upper stepping unit measured distance ε of bisque self-powered platform1, according to formula Δ1=δ-ε1, obtain optical axis
Rising clearance value Δ produced by lift drive mechanism1；
When optical axis lift drive mechanism drives bisque self-powered platform to turn to decline by rising, obtained using optical rangefinder
Upper turn lower stepping unit measured distance ε of bisque self-powered platform2, according to formula Δ2=δ-ε2, obtain optical axis elevator drive machine
Decline clearance value Δ produced by structure2；
Motor module drive bisque self-powered platform rise or fall once for a standard stepping unit apart from δ；
Step 2: the ascending path of control optical axis lift drive mechanism, process is as follows：
Step 201, optical axis lift drive mechanism rise initialization：Set the state before optical axis lift drive mechanism rises
Decline halted state for optical axis lift drive mechanism；
Step 202, optical axis lift drive mechanism rise compensation：According to formula δ1=δ+Δ1+Q1, set optical axis to lift driving
The initial step distance δ that mechanism rises1, wherein, Δ1For overcoming optical axis lift drive mechanism by the decline state in step 201
Turn the rising clearance brought during propradation, Q1Threshold value and Q are compensated for the rising of optical axis lift drive mechanism1For constant；
Step 203, optical axis lift drive mechanism decline calibration：According to formula δ2=δ1-Δ2-Q2, obtain optical axis lifting and drive
The actual step distance δ of motivation structure2, wherein, Δ2For overcoming optical axis lift drive mechanism to be turned by the propradation in step 202
The decline clearance brought during decline state, Q2The decline for rising compensation threshold value is overcome to calibrate threshold for optical axis lift drive mechanism
Value and Q2For constant；
Step 3: setting the lifting work distance of bisque self-powered platform：Bisque lifting work is controlled using control main frame
The rising operating distance N δ of platform, the decline operating distance M δ of bisque self-powered platform are controlled using control main frame, wherein, N and M are equal
For the integer not less than 0；
Step 4: the elevating control of bisque self-powered platform：When bisque self-powered platform performs vertical motion, pass through control
Host computer control optical axis lift drive mechanism processed, circulation step two；When bisque self-powered platform performs down maneuver, pass through control
Host computer control optical axis lift drive mechanism, bisque self-powered platform is progressively declined with standard stepping unit apart from δ.
Above-mentioned method, it is characterised in that：The control main frame is computer or PLC, the optical rangefinder
For infrared ambulator, the infrared emitting end of the infrared ambulator is vertical with quickly shaping device base plate.
Above-mentioned method, it is characterised in that：The Δ1+Q1=Δ2+Q2, 0.5 δ<Q1<δ, 0.5 δ<Q2<δ。
The present invention has advantages below compared with prior art：
1st, the precision of powder laying compensation system that the present invention is used, optical axis lift drive mechanism is gathered by setting optical rangefinder
The lifting clearance value of generation is turned in lifting process, it is calibrated using control main frame and controlled motor module accurately turns
It is dynamic, and then the kinematic accuracy of bisque self-powered platform is improved, realize and be coated with out uniform, zero defect and the powder with higher density
Layer.
2nd, the precision of powder laying compensation system that the present invention is used, by being arranged through the optical axis of quickly shaping device base plate, light
Axle defines the movement locus and the direction of motion of bisque self-powered platform with being slidably matched for quickly shaping device base plate, it is to avoid
The inclination and distortion of optical axis, reliable and stable, using effect is good.
3rd, the precision of powder laying compensation method that the present invention is used, step is simple, by terminating optical axis lifting drive with decline state
Motivation structure uphill process, and the climb of bisque self-powered platform is calibrated, it is ensured that on bisque self-powered platform
The kinematic accuracy risen；When carry out optical axis lift drive mechanism down maneuver when, due to before optical axis lift drive mechanism once no matter
Be propradation or decline state, terminated with declining state, therefore, performing optical axis lift drive mechanism down maneuver
When, bisque self-powered platform does not change the direction of motion, in the absence of the commutation campaign for carrying out bisque self-powered platform, and then can be real
Existing equidirectional continuous accurately decline, reduces optical axis lift drive mechanism and rises the calibration for turning to decline, using effect is good, just
In promoting the use of.
In summary, the present invention is novel in design rationally, is risen by terminating optical axis lift drive mechanism with decline state
Journey, reduces optical axis lift drive mechanism and rises the calibration for turning to decline, and improves the running precision and reliability of bisque self-powered platform
Property, it is easy to promote the use of.
Below by drawings and Examples, technical scheme is described in further detail.
Brief description of the drawings
The mounting structure schematic diagram of power spreading device and quickly shaping device base plate that Fig. 1 uses for the present invention.
The schematic block circuit diagram for the power spreading device that Fig. 2 uses for the present invention.
Fig. 3 is the FB(flow block) of the inventive method.
Description of reference numerals:
1-quickly shaping device base plate；2-optical axis；3-bisque self-powered platform；
4-optical rangefinder；5-motor module；6-feed screw nut；
7-belt pulley；8-leading screw；9-base plate fixed plate；
10-control main frame；11-memory；12-display；
13-installing plate.
Embodiment
As depicted in figs. 1 and 2, a kind of precision of powder laying compensation system for quickly shaping device of the present invention, bag
Include the power spreading device on quickly shaping device base plate 1 and the control main frame for controlling the compensation power spreading device lifting
10, the power spreading device includes passing perpendicularly through quickly shaping device base plate 1 and the light being slidably matched with quickly shaping device base plate 1
Axle 2, be horizontally set on the top of optical axis 2 and for for workpiece to be formed lay bisque bisque self-powered platform 3 and be arranged on light
The bottom of axle 2 and for installing the installing plate 13 of optical axis lift drive mechanism, the optical axis lift drive mechanism is by through installing plate
13 leading screws 8 for being connected to the bottom of quickly shaping device base plate 1, the feed screw nut 6 being slidably matched with leading screw 8, drive feed screw nut 6
The belt pulley 7 of rotation and be connected with belt pulley 7 and for driving belt pulley 7 rotate motor module 5 constitute, the leading screw
Nut 6 is embedded in installing plate 13 and is fixedly connected with installing plate 13, and the bottom of bisque self-powered platform 3 is provided with for measuring
The bottom surface of the lifting clearance value produced and bisque self-powered platform 3 is turned in the optical axis lift drive mechanism lifting process
The optical rangefinder 4 of distance, the signal output part of optical rangefinder 4 and control between the top surface of quickly shaping device base plate 1
The input of main frame 10 connects, and motor module 5 is controlled by control main frame 10.
In the present embodiment, the motor module 5 is fixedly mounted on the side of installing plate 13.
It should be noted that quickly shaping device base plate 1 is horizontally mounted the installation as quickly shaping device all parts
Basis, the setting one for passing perpendicularly through the optical axis 2 of quickly shaping device base plate 1 is to install bisque self-powered platform 3 and ensure
Bisque self-powered platform 3 is horizontally mounted, and two be to drive the oscilaltion of bisque self-powered platform 3；In actually used, optical axis
2 use 4, the setting of 4 optical axises 2 ensure that optical axis 2 and being slidably matched for quickly shaping device base plate 1 are indeformable, limit
The movement locus and the direction of motion of the vertical lift of bisque self-powered platform 3；The setting one of installing plate 13 is to install light
Axle lift drive mechanism, two be the maximum operating path for defining bisque self-powered platform 3, determines the size of power spreading device；Silk
The setting of thick stick 8 is in order to provide the sliding rail of optical axis lift drive mechanism, and the rotation of feed screw nut 6 realizes optical axis lifting driving
The slip of mechanism, it is actually used in, the nut bore being fixedly connected with feed screw nut 6 is offered on installing plate 13, leading screw spiral shell is realized
Mother 6 is fixed as one with installing plate 13, and the side that motor module 5 is fixedly mounted on installing plate 13 is to not hinder feed screw nut
6 slide in the length direction of leading screw 8, in addition, when feed screw nut 6 is slided, drive installing plate 13 and then to slide, and then drive is whole
Individual optical axis lift drive mechanism and bisque self-powered platform 3 are synchronous to be slided up and down.
The setting of optical rangefinder 4 be in order to gather turned in optical axis lift drive mechanism lifting process generation lifting trip
Gap value, is carried out calibrating using control main frame 10 to it and controlled motor module 5 is accurately rotated, in addition, optical rangefinder 4 is set
It is distance between bottom surface in order to gather bisque self-powered platform 3 and the top surface of quickly shaping device base plate 1 to put, after calibration
Optical axis lift drive mechanism is verified, realizes comprehensive accuracy compensation control, and then improve the motion of bisque self-powered platform
Precision, realizes and is coated with out uniform, zero defect and the powder bed with higher density.
In the present embodiment, the bottom of the quickly shaping device base plate 1 is provided with base plate fixed plate 9, and optical axis 2 is passed perpendicularly through
Base plate fixed plate 9.
The setting of base plate fixed plate 9 is that, in order to reinforce the supporting role of quickly shaping device base plate 1, optical axis 2 is passed perpendicularly through
Base plate fixed plate 9 passes perpendicularly through quickly shaping device base plate 1 with optical axis 2 realizes the orientation to optical axis 2 jointly, it is ensured that optical axis
2 slips are indeformable.
In the present embodiment, memory 11 and display 12 are connected with the control main frame 10, control main frame 10 is calculating
Machine or PLC.
The data storage that memory 11 can gather optical rangefinder 4, is easy to control main frame 10 to call, display 12
Setting be the kinematic accuracy number that bisque self-powered platform is shown for the motion state of real time inspection bisque self-powered platform
According to directly perceived effective.
In the present embodiment, the optical rangefinder 4 is infrared ambulator, the infrared emitting of the infrared ambulator
End is vertical with quickly shaping device base plate 1.
It is to ensure optical rangefinder that the infrared emitting end of infrared ambulator is vertical with quickly shaping device base plate 1
The data precision of 4 collections is high, and error is small, and data are effective.
A kind of method of the precision of powder laying compensation of quickly shaping device as shown in Figure 3, comprises the following steps：
Step 1: obtaining the lifting clearance value of optical axis lift drive mechanism：Bisque is set to lift work using control main frame 10
Make standard stepping unit that platform 3 rises or falls apart from δ, pass through the rotating of 10 controlled motor module of control main frame 5, drive bisque
Self-powered platform is moved repeatedly about 3, when optical axis lift drive mechanism drives bisque self-powered platform 3 to turn to rise by declining,
Lower turn of upper stepping unit measured distance ε of bisque self-powered platform 3 is obtained using optical rangefinder 41, according to formula Δ1=δ-
ε1, obtain the rising clearance value Δ produced by optical axis lift drive mechanism1；
When optical axis lift drive mechanism drives bisque self-powered platform 3 to turn to decline by rising, obtained using optical rangefinder 4
Take upper turn lower stepping unit measured distance ε of bisque self-powered platform 32, according to formula Δ2=δ-ε2, obtain optical axis lifting driving
Decline clearance value Δ produced by mechanism2；
It should be noted that when optical axis lift drive mechanism drives bisque self-powered platform 3 to turn to rise by declining, due to
There is clearance in optical axis lift drive mechanism, cause the distance that optical axis lift drive mechanism rises to reach expected standard stepping
Cell distance δ, lower turn of upper stepping unit measured distance ε of actual rising is measured using optical rangefinder 41, and then obtain bisque
Self-powered platform 3 is by declining rising clearance value Δ when turning to rise1；Similarly, when optical axis lift drive mechanism drives bisque lifting
When workbench 3 turns to decline by rising, because optical axis lift drive mechanism has clearance, cause what optical axis lift drive mechanism declined
Distance can not reach expected standard stepping unit apart from δ, and upper turn lower stepping list of actual decline is measured using optical rangefinder 4
First measured distance ε2, and then bisque self-powered platform 3 is obtained by rising decline clearance value Δ when turning to decline2。
It is once a standard stepping unit apart from δ that motor module 5, which drives bisque self-powered platform 3 to rise or fall,；
It should be noted that standard stepping unit apart from δ be control main frame 10 set bisque self-powered platform 3 rise or
Decline distance once, be also that bisque self-powered platform 3 once rises or falls the expected distance reached.
The control main frame 10 is computer or PLC, and the optical rangefinder 4 is infrared ambulator, described
The infrared emitting end of infrared ambulator is vertical with quickly shaping device base plate 1.
Step 2: the ascending path of control optical axis lift drive mechanism, process is as follows：
Step 201, optical axis lift drive mechanism rise initialization：Set the state before optical axis lift drive mechanism rises
Decline halted state for optical axis lift drive mechanism；
A vertical motion is often carried out for optical axis lift drive mechanism, using identical uphill process, optical axis is kept
Lift drive mechanism often rises once to be terminated with declining, and one is to ensure that optical axis lift drive mechanism often rises once dynamic
Make all same, be easy to the work that moves in circles, reduce the actual rising of bisque self-powered platform 3 or actual dropping distance has error
Possibility, eliminates the generation of optical axis lift drive mechanism clearance；Two be in order to give optical axis lift drive mechanism down maneuver produce
The basis continuously declined, it is equidirectional continuous because the first time that clearance is only appeared in after commutation is risen or fallen in action
The kinematic accuracy risen or fallen is more accurate, therefore, and optical axis lift drive mechanism just will not produce commutation when declining, and design is skilful
It is wonderful；It should be noted that in practical application, using same reason, the decline road of optical axis lift drive mechanism can also be controlled
Footpath, sets the state before optical axis lift drive mechanism declines and rises halted state, using effect as optical axis lift drive mechanism
It is good.
Step 202, optical axis lift drive mechanism rise compensation：According to formula δ1=δ+Δ1+Q1, set optical axis to lift driving
The initial step distance δ that mechanism rises1, wherein, Δ1For overcoming optical axis lift drive mechanism by the decline state in step 201
Turn the rising clearance brought during propradation, Q1Threshold value and Q are compensated for the rising of optical axis lift drive mechanism1For constant；
Step 203, optical axis lift drive mechanism decline calibration：According to formula δ2=δ1-Δ2-Q2, obtain optical axis lifting and drive
The actual step distance δ of motivation structure2, wherein, Δ2For overcoming optical axis lift drive mechanism to be turned by the propradation in step 202
The decline clearance brought during decline state, Q2The decline for rising compensation threshold value is overcome to calibrate threshold for optical axis lift drive mechanism
Value and Q2For constant；
In the present embodiment, the Δ1+Q1=Δ2+Q2, 0.5 δ<Q1<δ, 0.5 δ<Q2<δ。
It should be noted that for the higher powdering mechanism of relative accuracy requirements, the rising of optical axis lift drive mechanism is mended
Repay threshold value Q1With the decline calibration threshold value Q of optical axis lift drive mechanism2It is with standard stepping unit apart from the close distances of δ, protects
The precision that card bisque self-powered platform 3 rises or falls, the Δ1+Q1=Δ2+Q2It is to ensure optical axis lift drive mechanism
Actual step distance δ2It is equal apart from δ with standard stepping unit, it is ensured that bisque self-powered platform 3 is stable to be risen or fallen,
The clearance for overcoming optical axis lift drive mechanism to produce.
Step 3: setting the lifting work distance of bisque self-powered platform：Using the control bisque lifting work of control main frame 10
Make the rising operating distance N δ of platform 3, the decline operating distance M δ of bisque self-powered platform 3 are controlled using control main frame 10, wherein,
N and M are the integer not less than 0；
Step 4: the elevating control of bisque self-powered platform：When bisque self-powered platform 3 performs vertical motion, pass through
Control main frame 10 controls optical axis lift drive mechanism, circulation step two；When bisque self-powered platform 3 performs down maneuver, lead to
The control optical axis lift drive mechanism of control main frame 10 is crossed, bisque self-powered platform 3 is progressively declined with standard stepping unit apart from δ.
Realize optical axis elevator drive machine in the rising operating distance N δ of bisque self-powered platform 3, i.e., continuous circulation step two
The ascending path n times of structure, realize the decline operating distance M δ of bisque self-powered platform 3, and optical axis liter is controlled by control main frame 10
Drive mechanism is dropped, and bisque self-powered platform 3 is progressively directly declined M times with standard stepping unit apart from δ, completes equidirectional continuous fortune
It is dynamic.
It should be noted that by terminating optical axis lift drive mechanism uphill process with decline state, and bisque is lifted
The climb of workbench 3 is calibrated, it is ensured that the kinematic accuracy that bisque self-powered platform 3 rises；When progress optical axis liter
When dropping drive mechanism down maneuver, because once either propradation still declines state before optical axis lift drive mechanism,
It is to be terminated with declining state, therefore, when performing optical axis lift drive mechanism down maneuver, bisque self-powered platform 3 does not change
Become the direction of motion, in the absence of carrying out the commutation campaign of bisque self-powered platform 3, and then can be directly realized by it is equidirectional it is continuous accurately
Decline, reduce optical axis lift drive mechanism and rise the calibration for turning to decline, using effect is good.
The above, is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (8)
1. a kind of precision of powder laying compensation system for quickly shaping device, it is characterised in that：Including being set installed in Quick-forming
Power spreading device on standby base plate (1) and the control main frame (10) for controlling the compensation power spreading device lifting, the powdering dress
Put including pass perpendicularly through quickly shaping device base plate (1) and be slidably matched with quickly shaping device base plate (1) optical axis (2), water
It is flat to be arranged on optical axis (2) top and for laying the bisque self-powered platform (3) of bisque for workpiece to be formed and being arranged on optical axis
(2) bottom and for installing the installing plate (13) of optical axis lift drive mechanism, the optical axis lift drive mechanism is by through installation
Plate (13) be connected to the leading screw (8) of quickly shaping device base plate (1) bottom, the feed screw nut (6) being slidably matched with leading screw (8),
Drive the belt pulley (7) of feed screw nut (6) rotation and be connected with belt pulley (7) and be used for what driving belt pulley (7) was rotated
Motor module (5) is constituted, and the feed screw nut (6) is embedded in installing plate (13) and is fixedly connected with installing plate (13), bisque
The bottom of self-powered platform (3) is provided with the lifting for turning to generation in the optical axis lift drive mechanism lifting process for measuring
The optics of distance is surveyed between the top surface of the bottom surface and quickly shaping device base plate (1) of clearance value and bisque self-powered platform (3)
Distance meter (4), the signal output part of optical rangefinder (4) connects with the input of control main frame (10), and motor module (5) is by controlling
Main frame (10) is controlled.
2. according to a kind of precision of powder laying compensation system for quickly shaping device described in claim 1, it is characterised in that：Institute
State the side that motor module (5) is fixedly mounted on installing plate (13).
3. according to a kind of precision of powder laying compensation system for quickly shaping device described in claim 1, it is characterised in that：Institute
The bottom for stating quickly shaping device base plate (1) is provided with base plate fixed plate (9), and optical axis (2) passes perpendicularly through base plate fixed plate (9).
4. according to a kind of precision of powder laying compensation system for quickly shaping device described in claim 1, it is characterised in that：Institute
State and memory (11) and display (12) are connected with control main frame (10), control main frame (10) is computer or PLC.
5. according to a kind of precision of powder laying compensation system for quickly shaping device described in claim 1, it is characterised in that：Institute
Optical rangefinder (4) is stated for infrared ambulator, infrared emitting end and the quickly shaping device bottom of the infrared ambulator
Plate (1) is vertical.
6. a kind of method for the precision of powder laying compensation that quickly shaping device is carried out using system as claimed in claim 1, its feature
It is：This method comprises the following steps：
Step 1: obtaining the lifting clearance value of optical axis lift drive mechanism：Bisque lifting work is set using control main frame (10)
The standard stepping unit that platform (3) rises or falls is apart from δ, by control main frame (10) controlled motor module (5) rotating, drives
Bisque self-powered platform (3) is moved repeatedly up and down, when optical axis lift drive mechanism drives bisque self-powered platform (3) to be turned by declining
During rising, lower turn of upper stepping unit measured distance ε of bisque self-powered platform (3) is obtained using optical rangefinder (4)1, according to
Formula Δ1=δ-ε1, obtain the rising clearance value Δ produced by optical axis lift drive mechanism1；
When optical axis lift drive mechanism drives bisque self-powered platform (3) to turn to decline by rising, obtained using optical rangefinder (4)
Take upper turn lower stepping unit measured distance ε of bisque self-powered platform (3)2, according to formula Δ2=δ-ε2, obtain optical axis lifting and drive
Decline clearance value Δ produced by motivation structure2；
Motor module (5) drive bisque self-powered platform (3) rise or fall once for a standard stepping unit apart from δ；
Step 2: the ascending path of control optical axis lift drive mechanism, process is as follows：
Step 201, optical axis lift drive mechanism rise initialization：The state before optical axis lift drive mechanism rises is set as light
Axle lift drive mechanism declines halted state；
Step 202, optical axis lift drive mechanism rise compensation：According to formula δ1=δ+Δ1+Q1, optical axis lift drive mechanism is set
The initial step distance δ risen1, wherein, Δ1For overcoming optical axis lift drive mechanism by the decline state turn in step 201
The rising clearance brought during the state of liter, Q1Threshold value and Q are compensated for the rising of optical axis lift drive mechanism1For constant；
Step 203, optical axis lift drive mechanism decline calibration：According to formula δ2=δ1-Δ2-Q2, obtain optical axis lift drive mechanism
Actual step distance δ2, wherein, Δ2For overcoming optical axis lift drive mechanism to be turned to decline shape by the propradation in step 202
The decline clearance brought during state, Q2Overcome the decline calibration threshold value and Q for rising compensation threshold value for optical axis lift drive mechanism2
For constant；
Step 3: setting the lifting work distance of bisque self-powered platform：Bisque lifting work is controlled using control main frame (10)
The rising operating distance N δ of platform (3), the decline operating distance M δ of bisque self-powered platform (3) are controlled using control main frame (10),
Wherein, N and M are the integer not less than 0；
Step 4: the elevating control of bisque self-powered platform：When bisque self-powered platform (3) performs vertical motion, pass through control
Main frame (10) processed controls optical axis lift drive mechanism, circulation step two；When bisque self-powered platform (3) performs down maneuver,
By control main frame (10) control optical axis lift drive mechanism, bisque self-powered platform (3) with standard stepping unit apart from δ progressively
Decline.
7. in accordance with the method for claim 6, it is characterised in that：The control main frame (10) be computer or PLC,
The optical rangefinder (4) is infrared ambulator, the infrared emitting end of the infrared ambulator and quickly shaping device
Base plate (1) is vertical.
8. in accordance with the method for claim 7, it is characterised in that：The Δ1+Q1=Δ2+Q2, 0.5 δ<Q1<δ, 0.5 δ<Q2<
δ。
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|---|---|---|---|---|
| JPH0933236A (en) * | 1995-07-14 | 1997-02-07 | Furukawa Electric Co Ltd:The | Measuring method for optical axis of optical module |
| CN103878980A (en) * | 2014-03-21 | 2014-06-25 | 浙江大学 | Three-dimensional printer with replaceable nozzle |
| CN206696709U (en) * | 2017-05-02 | 2017-12-01 | 西安赛隆金属材料有限责任公司 | A kind of precision of powder laying compensation system for quickly shaping device |
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2017
- 2017-05-02 CN CN201710300409.9A patent/CN106959705B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0933236A (en) * | 1995-07-14 | 1997-02-07 | Furukawa Electric Co Ltd:The | Measuring method for optical axis of optical module |
| CN103878980A (en) * | 2014-03-21 | 2014-06-25 | 浙江大学 | Three-dimensional printer with replaceable nozzle |
| CN206696709U (en) * | 2017-05-02 | 2017-12-01 | 西安赛隆金属材料有限责任公司 | A kind of precision of powder laying compensation system for quickly shaping device |
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| 岳彦芳;王文奎;杨光;常宏杰;: "金属微粉精密层铺结构设计" * |
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Address after: 710018 Room 303-46, Block A, Kairui, Fengcheng 12th Road, Xi'an Economic and Technological Development Zone, Xi'an City, Shaanxi Province Patentee after: Xi'an Sailong Additive Technology Co.,Ltd. Country or region after: China Address before: 710200 middle section of Jinggao West Road, Jingwei new town new material industrial park, Xi'an Economic and Technological Development Zone, Xi'an City, Shaanxi Province Patentee before: XI'AN SAILONG METAL MATERIALS Co.,Ltd. Country or region before: China |