CN107655710B - 3D printer fault detection method - Google Patents
3D printer fault detection method Download PDFInfo
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- CN107655710B CN107655710B CN201710946570.3A CN201710946570A CN107655710B CN 107655710 B CN107655710 B CN 107655710B CN 201710946570 A CN201710946570 A CN 201710946570A CN 107655710 B CN107655710 B CN 107655710B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
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Abstract
Existing in the prior art to the time and again effect consideration of 3D printer fault detection shortage in order to overcome the problems, such as, the present invention provides a kind of 3D printer fault detection methods especially in terms of temperature.Using this method, the occasions such as accurate occasion, such as medical device product, compound workpiece are required in the smaller, control using 3D printer production melting material temperature difference, it can be ensured that the sensitivity of 3D printer and control flexibility ratio meet complicated applications demand.
Description
The application is application number 2015107112407,28 days October 2015 applying date, denomination of invention " 3D printer event
The divisional application of barrier detection method ".
Technical field
The present invention relates to 3D printer fault detection technique fields, more particularly, to a kind of 3D printer temperature fault
Detection method.
Background technique
With being constantly progressive for 3D printing technique, people are proposed more the function, performance and reliability of 3D printer
High requirement.3D printer has more and more wide application prospect and market potential as a kind of emerging process equipment.Mesh
Preceding 3D printer on the market is based on FDM principle, that is, Fused Deposition Modeling principle more.The raw material of this kind of 3D printer are general
It is thermoplastic material, such as wax, ABS, nylon.It is most important for the detection of temperature.
In the prior art, it is online to disclose a kind of 3D printer working condition by Chinese patent application CN201410489881.8
Monitoring device.Including digital sampling and processing and power module, the digital sampling and processing includes microprocessor, camera shooting
Head, humidity temperature pickup module, Velocity-acceleration sensor, communication module, sound-light alarm, open circuit protection, liquid crystal display and
Keyboard input module.The picture of spray head and workpiece when camera acquires 3D printer work in real time, temperature humidity sensor module
Spray head, baseplate temp and environment temperature and humidity information, the speed of Velocity-acceleration sensor real-time measurement bottom plate is acquired respectively to add
Speed, processor are sent to host computer and liquid crystal display real-time display after handling information above.When temperature and humidity parameter or speed
When spending acceleration parameter beyond setting range, device passes through breaker protector and cuts off 3D printer power supply, realizes emergency stop protection.
Since there are intermittent processes for the use of 3D printer, it is possible to using being needed due to various reasons after a period of time
Then a period of time out of service is again started up operation, therefore, may cause heating element, transfer unit when running again
There are cooling remaining vestiges after last heating in equal components.These vestiges be unevenly distributed and with the shortening of service life and
Become more serious.Existing 3D printer only detects limited temperature information, such as heating element temperature during heating
Degree etc..However, but lacking effective detection for above-mentioned vestiges situation, causes temperature during reusing 3D printer and examine
The true problem of indeterminacy.Time and again the effect occasion more demanding for material processing precise degree is particularly disadvantageous for this 3D printer.
Summary of the invention
It is existing in the prior art to the time and again effect consideration of 3D printer fault detection shortage, this hair in order to overcome the problems, such as
It is bright to provide a kind of 3D printer fault detection method especially in terms of temperature.This method comprises:
(1) before 3D printer starts to feed and heat, the temperature in space, note at detection 3D printer heating element place
For first environment temperature；
(2) 3D printer is opened, the inlet amount of feed inlet is detected, records ratio of the inlet amount relative to the time of the material
Value, is denoted as this ratio；
(3) when this described ratio is greater than predetermined threshold, the temperature of 3D printer heating element is detected, remembers that this temperature is
First material temperature；
(4) temperature of charge at 3D printer spray material port is detected, remembers that this temperature is second material temperature；
(5) recording the first material temperature is more than the first transformation period that first environment temperature predetermined threshold is spent；
(6) it when first material temperature is above the first predetermined temperature within a certain period of time, records from unlatching 3D printer
To the time spent at this time, first is obtained according to the time and above-mentioned first transformation period and stablizes the time；
(7) it when second material temperature is above the second predetermined temperature within a certain period of time, records from unlatching 3D printer
To the time spent at this time, it is denoted as second and stablizes the time；
(8) it stores this and stablizes the time using above-mentioned first transformation period of 3D printer, the first stable time and second,
And the time and second is stablized according to above-mentioned first transformation period, first and stablizes time calculating vestiges accumulation factor；
(9) time, second are stablized using this above-mentioned ratio of 3D printer, the first transformation period, first according to this
Whether that stablizes time, vestiges accumulation factor and storage judges 3D printer using the average vestiges coefficient of 3D printer before
In malfunction.
Further, the step (2) further comprises: after opening 3D printer, the use of cumulative record 3D printer
Time is denoted as accumulation and uses the time.
Further, first is obtained according to the time and above-mentioned first transformation period in the step (6) stablize time packet
It includes: using the difference for subtracting the first transformation period from unlatching 3D printer to the time spent at this time, obtaining first and stablize the time.
Further, vestiges accumulation factor is calculated in the step (8) are as follows:
Vestiges accumulation factor=((m- first transformation period when the first stabilization)/(when the second stabilization when the m- first variation
Between)) * 100%.
Further, the step (9) includes:
(9.1) ratio using the inlet amount of 3D printer relative to the time before stored is searched, to determine and this
The difference of secondary ratio is less than one or many ratios before preset threshold, then to the one or many ratios determined
Average value is calculated, history average of relatives value is denoted as；
(9.2) the vestiges accumulation factor for using 3D printer before stored is searched, is accumulated with determining with this vestiges
The difference of coefficient is less than one or many vestiges accumulation factors before preset threshold, then to determine this is primary or more
Secondary vestiges accumulation factor calculates average value, is denoted as history vestiges accumulation factor average value；
(9.3) when being stablized according to this ratio, history average of relatives value, the first transformation period, the first stable time, second
Between, vestiges accumulation factor and history vestiges accumulation factor average value judge whether 3D printer is in malfunction.
Further, the step (9.3) includes calculating defective proportion coefficient according to the following formula:
Defective proportion coefficient=((this ratio/history average of relatives value)/(vestiges accumulation factor/history vestiges accumulation system
Number average value)) * ((first stablizes the first transformation period of time *)/(second, which stablizes time * second, stablizes the time))；When the event
When hindering proportionality coefficient less than preset threshold, it is believed that 3D printer, which does not occur above-mentioned vestiges failure or vestiges, not yet influences 3D printing
Machine it is normal；Otherwise the vestiges of the 3D printer is prompted to influence its heating accuracy.
The beneficial effects of the present invention are: being required in the smaller, control using 3D printer production melting material temperature difference accurate
The occasions such as occasion, such as medical device product, compound workpiece, it can be ensured that the sensitivity of 3D printer and control flexibility ratio are full
Sufficient complicated applications demand.
Detailed description of the invention
Fig. 1 shows the flow chart of fault detection method of the invention.
Specific embodiment
As shown in Figure 1,3D printer fault detection method of the invention includes the following steps:
(1) before 3D printer starts to feed and heat, the temperature in space, note at detection 3D printer heating element place
For first environment temperature；
(2) 3D printer is opened, the inlet amount of feed inlet is detected, records ratio of the inlet amount relative to the time of the material
Value, is denoted as this ratio；
(3) when this described ratio is greater than predetermined threshold, the temperature of 3D printer heating element is detected, remembers that this temperature is
First material temperature；Here predetermined threshold is usually to be determined according to the model of specific 3D printer and selected material
's.For example, using MakerBotPLA blue consumptive material, threshold value herein can be set to 4.3mm/ for AURORA3D printer
s。
(4) temperature of charge at 3D printer spray material port is detected, remembers that this temperature is second material temperature；
(5) recording the first material temperature is more than the first transformation period that first environment temperature predetermined threshold is spent；
Predetermined threshold herein can be 25 DEG C ± 2 DEG C.
(6) it when first material temperature is above the first predetermined temperature within a certain period of time, records from unlatching 3D printer
To the time spent at this time, first is obtained according to the time and above-mentioned first transformation period and stablizes the time；Corresponding to above-mentioned
MakerBotPLA blue consumptive material material, the first predetermined temperature herein are, for example, 130 DEG C ± 5 DEG C.
(7) it when second material temperature is above the second predetermined temperature within a certain period of time, records from unlatching 3D printer
To the time spent at this time, it is denoted as second and stablizes the time；Corresponding to above-mentioned MakerBotPLA blue consumptive material material, herein
Second predetermined temperature is, for example, 150 DEG C ± 5 DEG C.
(8) it stores this and stablizes the time using above-mentioned first transformation period of 3D printer, the first stable time and second,
And the time and second is stablized according to above-mentioned first transformation period, first and stablizes time calculating vestiges accumulation factor；
(9) time, second are stablized using this above-mentioned ratio of 3D printer, the first transformation period, first according to this
Whether that stablizes time, vestiges accumulation factor and storage judges 3D printer using the average vestiges coefficient of 3D printer before
In malfunction.
The principle of the present invention is: temperature when being in steady-working state by acquiring multiple positions and it is experienced when
Between, and cut from environment temperature rise to predetermined threshold (such as regulation melt temperature of material) this time (because its with
Variation of ambient temperature and have uncertainty, therefore need to remove this factor), then by in historical record approximately charging speed
The vestiges accumulation factor of degree, ratio relative to the time of inlet amount of material etc. are multiplied, finally obtain characterization 3D printer this
Material melts the coefficient for the failure that the temperature control precision for causing 3D printer to melt material is deteriorated when work, and based on experience value
Breakdown judge is carried out as threshold value.
Preferably, the step (2) further comprises: after opening 3D printer, when the use of cumulative record 3D printer
Between, it is denoted as accumulation and uses the time.
Preferably, include: according to the time and the stable time of above-mentioned first transformation period acquisition first in the step (6)
Using the difference for subtracting the first transformation period from unlatching 3D printer to the time spent at this time, obtains first and stablize the time.
Preferably, vestiges accumulation factor is calculated in the step (8) are as follows:
Vestiges accumulation factor=((m- first transformation period when the first stabilization)/(when the second stabilization when the m- first variation
Between)) * 100%.
Preferably, the step (9) includes:
(9.1) ratio using the inlet amount of 3D printer relative to the time before stored is searched, to determine and this
The difference of secondary ratio is less than one or many ratios before preset threshold, then to the one or many ratios determined
Average value is calculated, history average of relatives value is denoted as；
(9.2) the vestiges accumulation factor for using 3D printer before stored is searched, is accumulated with determining with this vestiges
The difference of coefficient is less than one or many vestiges accumulation factors before preset threshold, then to determine this is primary or more
Secondary vestiges accumulation factor calculates average value, is denoted as history vestiges accumulation factor average value；
(9.3) when being stablized according to this ratio, history average of relatives value, the first transformation period, the first stable time, second
Between, vestiges accumulation factor and history vestiges accumulation factor average value judge whether 3D printer is in malfunction.
Preferably, the step (9.3) includes calculating defective proportion coefficient according to the following formula:
Defective proportion coefficient=((this ratio/history average of relatives value)/(vestiges accumulation factor/history vestiges accumulation system
Number average value)) * (first, which stablizes the first transformation period of time */second, stablizes the stable time of time * second)；When the defective proportion
When coefficient is less than preset threshold, it is believed that 3D printer, which does not occur above-mentioned vestiges failure or vestiges, is not yet influencing 3D printer just
Often；Otherwise the vestiges of the 3D printer is prompted to influence its heating accuracy.In this comparison procedure, this preset threshold can be chosen
Value between 0.2~0.5.
The step of illustrating some specific embodiments of the invention in a manner of text and Detailed description of the invention above and process, and
Non-exhaustive nothing left is limited to concrete form described above.It should be pointed out that for those skilled in the art,
Various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as this
The protection scope of invention.
Claims (4)
1. a kind of 3D printer fault detection method, comprising:
(1) before 3D printer starts to feed and heat, where detection 3D printer heating element at space temperature, be denoted as the
One environment temperature；
(2) 3D printer is opened, the inlet amount of feed inlet is detected, records ratio of the inlet amount relative to the time of material, be denoted as
This ratio；After opening 3D printer, cumulative record 3D printer uses the time, is denoted as accumulation and uses the time；
(3) when this described ratio is greater than predetermined threshold, the temperature of 3D printer heating element is detected, remembers that this temperature is first
Temperature of charge；
(4) temperature of charge at 3D printer spray material port is detected, remembers that this temperature is second material temperature；
(5) recording the first material temperature is more than the first transformation period that first environment temperature predetermined threshold is spent；
(6) when first material temperature is above the first predetermined temperature within a certain period of time, record from open 3D printer to this
When time for being spent, obtain first according to the time and above-mentioned first transformation period and stablize the time；
(7) when second material temperature is above the second predetermined temperature within a certain period of time, record from open 3D printer to this
When time for being spent, be denoted as second and stablize the time；
(8) it stores this to stablize the time using above-mentioned first transformation period of 3D printer, the first stable time and second, and root
Stablize the time and second according to above-mentioned first transformation period, first and stablizes time calculating vestiges accumulation factor；Calculate vestiges accumulation system
Number are as follows:
Vestiges accumulation factor=((the first m- first transformation period when stablizing)/(the second m- first transformation period when stablizing)) *
100%
(9) stablized according to this using this above-mentioned ratio of 3D printer, the first transformation period, the first stable time, second
Time, vestiges accumulation factor and storage before using the average vestiges coefficient of 3D printer judge whether 3D printer is in
Malfunction.
2. the method according to claim 1, wherein being become in the step (6) according to the time and above-mentioned first
Changing the stable time of time acquisition first includes: when utilizing to subtract the first variation from unlatching 3D printer to the time spent at this time
Between difference, obtain first stablize the time.
3. the method according to claim 1, wherein the step (9) includes:
(9.1) ratio using the inlet amount of 3D printer relative to the time before stored is searched, to determine and this ratio
The difference of value is less than one or many ratios before preset threshold, then to the one or many ratio calculations determined
Average value is denoted as history average of relatives value；
(9.2) the vestiges accumulation factor for using 3D printer before stored is searched, with determining and this vestiges accumulation factor
Difference be less than one or many vestiges accumulation factors before preset threshold, then to determine this is one or many residual
Mark accumulation factor calculates average value, is denoted as history vestiges accumulation factor average value；
(9.3) according to this ratio, history average of relatives value, the first transformation period, first stablize the time, second stablize the time,
Vestiges accumulation factor and history vestiges accumulation factor average value judge whether 3D printer is in malfunction.
4. according to the method described in claim 3, it is characterized in that, the step (9.3) includes calculating failure ratio according to the following formula
Example coefficient:
Defective proportion coefficient=((this ratio/history average of relatives value)/(vestiges accumulation factor/history vestiges accumulation factor is flat
Mean value)) * ((first stablizes the first transformation period of time *)/(second, which stablizes time * second, stablizes the time))；When the failure
When proportionality coefficient is less than preset threshold, it is believed that 3D printer, which does not occur above-mentioned vestiges failure or vestiges, not yet influences 3D printer
It is normal；Otherwise the vestiges of the 3D printer is prompted to influence its heating accuracy.
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| CN201710946570.3A CN107655710B (en) | 2015-10-28 | 2015-10-28 | 3D printer fault detection method |
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| CN201510711240.7A CN105181375B (en) | 2015-10-28 | 2015-10-28 | 3D printer fault detection method |
| CN201710946570.3A CN107655710B (en) | 2015-10-28 | 2015-10-28 | 3D printer fault detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106382953A (en) * | 2016-09-06 | 2017-02-08 | 芜湖纯元光电设备技术有限公司 | 3D printer fault determination and storage method based on temperature detection |
| CN107053657A (en) * | 2017-04-06 | 2017-08-18 | 江苏海事职业技术学院 | A kind of 3D printer fault detection method based on temperature detection |
| CN107081899B (en) * | 2017-05-10 | 2019-08-13 | 山东大学 | A kind of antenna production method based on 3D printing |
| CN109049676A (en) * | 2018-08-10 | 2018-12-21 | 陈劲松 | A kind of 3D printer pallet and 3D printer |
| CN110849646A (en) * | 2019-10-17 | 2020-02-28 | 中国航空工业集团公司洛阳电光设备研究所 | Method for testing temperature stabilization time of product |
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| CN203496156U (en) * | 2013-08-29 | 2014-03-26 | 上海骧远信息科技有限公司 | Feeding failure detection device of 3D (three-dimensional) printer |
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| CN107655710A (en) | 2018-02-02 |
| CN105181375B (en) | 2017-11-21 |
| CN105181375A (en) | 2015-12-23 |
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