CN110243561A - Spring test machine and its spring detection method, control device and storage medium - Google Patents
Spring test machine and its spring detection method, control device and storage medium Download PDFInfo
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- CN110243561A CN110243561A CN201910678739.0A CN201910678739A CN110243561A CN 110243561 A CN110243561 A CN 110243561A CN 201910678739 A CN201910678739 A CN 201910678739A CN 110243561 A CN110243561 A CN 110243561A
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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
- G01M13/00—Testing of machine parts
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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
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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Abstract
The invention discloses a kind of spring detection method, this method is applied to spring test machine, comprising the following steps: when each station is fixed with spring to be measured, obtains the pressure information of the pressure detecting module detection；According to the pressure information, the location information of each spring to be measured is determined；Judge the whether corresponding default positioning information matches of each location information；If matching, controls the hold-down devices and push according to default test parameter, so that each test fixture compresses corresponding spring to be measured, and the force value that each spring compression to be measured generates is detected.The invention also discloses a kind of control device, spring test machine and readable storage medium storing program for executing.The present invention is directed to reduce the measurement error of spring test, the reliability of spring test result is improved.
Description
Technical field
The present invention relates to spring detection technique field more particularly to spring detection method, control device, spring test machine and
Readable storage medium storing program for executing.
Background technique
Currently, generally to different springs can resist tired to guarantee service life of the spring in product (such as mattress)
Labor test, to choose the spring for meeting product requirement.
However, generally passing through manual type for bullet currently during the spring to a collection of different size is tested
Spring, which is fixed on, directly to be started to detect on the station of workbench, and since manually-operated randomness is larger, each spring is relative to survey
The position of jig and disunity are tried, the test fixture that not can guarantee on spring test machine acts on unanimously the force of each spring,
It is easy to cause measurement error larger, influences the reliability of spring test result.
Above content is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that above content is existing skill
Art.
Summary of the invention
The main purpose of the present invention is to provide a kind of spring detection methods, it is intended to the measurement error of spring test is reduced,
Improve the reliability of spring test result.
To achieve the above object, the present invention provides a kind of spring detection method, is applied to spring test machine, and the spring is surveyed
Test-run a machine includes workbench and the hold-down devices that are installed on above the workbench, and the workbench is equipped with multiple stations, each described
Station is equipped with the fastener for fixed spring, and the surface of the workbench is equipped with pressure inspection in each station
Module is surveyed, the hold-down devices are equipped with multiple test fixtures, and the test fixture and the station are arranged in a one-to-one correspondence, the bullet
Detection method includes the following steps for spring:
When each station is fixed with spring to be measured, the pressure information of the pressure detecting module detection is obtained；
According to the pressure information, the location information of each spring to be measured is determined；
Judge the whether corresponding default positioning information matches of each location information；
If matching, controls the hold-down devices and push according to default test parameter, so that each test fixture compression
Corresponding spring to be measured, and detect the force value that each spring compression to be measured generates.
Optionally, the pressure detecting module is the pressure detecting plate for covering the table surface, each described to be measured
Spring is fixed on the pressure detecting plate, described according to the pressure information, determines the position letter of each spring to be measured
The step of breath includes:
The pressure distributed intelligence figure of the table surface is generated according to the pressure information；
The pressure distributed intelligence figure is analyzed, determines the location information of each spring to be measured.
Optionally, described the step of analyzing the pressure distributed intelligence figure, determining the location information of each spring to be measured
Include:
In the pressure distributed intelligence figure, the profile of each spring to be measured is identified；
The position feature point of each spring to be measured is determined according to each profile；
According to location parameter of each position feature point in the pressure distributed intelligence figure, each bullet to be measured is determined
The location information of spring.
Optionally, the step of position feature point that each spring to be measured is determined according to each profile includes:
The central point for identifying each profile, as the position feature point.
Optionally, described in the pressure distributed intelligence figure, the step of identifying the profile of each spring to be measured, includes:
Parse the picture point that pressure value in the pressure distributed intelligence figure is greater than or equal to preset threshold；
Circumference identification is carried out to described image point, determines the profile of each spring to be measured.
Optionally, when each station is fixed with spring to be measured, the pressure for obtaining the pressure detecting module detection
Before the step of force information, further includes:
It controls the hold-down devices and pushes preset strokes, so that each test fixture compresses corresponding spring to be measured.
Optionally, the step of default positioning information matches for judging whether each location information corresponding it
Afterwards, further includes:
If mismatching, it is determined that the unmatched spring to be measured of the corresponding default location information of location information is as abnormal
Spring；
According to the corresponding default location information of the location information of the abnormal spring, the position of the abnormal spring is determined
Set runout information；
The station identification information of station where obtaining the abnormal spring；
Prompt information is generated according to the position runout information and the station identification information；
Export the prompt information.
In addition, to achieve the goals above, the application also proposes that a kind of control device, the control device include: storage
The spring detection program that device, processor and being stored in can be run on the memory and on the processor, the spring inspection
The step of as above described in any item spring detection methods are realized when ranging sequence is executed by the processor.
In addition, to achieve the goals above, the application also proposes that a kind of spring test machine, the spring test machine include:
Workbench, is equipped with multiple stations, and each station is equipped with the fastener for fixed spring, the work
The surface of platform is equipped with pressure detecting module in each station；
Hold-down devices are installed on above the workbench, and the hold-down devices are equipped with multiple test fixtures, and the test is controlled
Tool and the station are arranged in a one-to-one correspondence；
Control device as described above, the pressure detecting module and the hold-down devices connect with the control device
It connects.
In addition, to achieve the goals above, the application also proposes a kind of readable storage medium storing program for executing, on the readable storage medium storing program for executing
It is stored with spring detection program, the spring detection program realizes as above described in any item spring detections when being executed by processor
The step of method.
A kind of spring test method proposed by the present invention is applied to spring test machine, by examining according to pressure on workbench
The pressure information for surveying module detection determines the location information of each spring to be measured on workbench, according to identified location information with
Whether it corresponds to the matching of default location information, whether the position that may recognize that each spring to be measured is placed is accurate, and to be measured
When spring position is accurate, just control hold-down devices is pushed according to default test parameter so that each test fixture compress it is corresponding to
Spring is surveyed, and detects the force value that each spring compression to be measured generates, by the above-mentioned means, can guarantee what each spring to be measured was placed
Position is unified relative to the position of test fixture, guarantees that the test fixture on spring test machine makees the force of each spring to be measured
With consistent, the measurement error of reduction spring test, the reliability of raising spring test result.
Detailed description of the invention
Fig. 1 is the hardware structural diagram of one embodiment of control device of the present invention；
Fig. 2 is the flow diagram of spring detection method first embodiment of the present invention；
Fig. 3 is the refinement flow diagram of step S20 in Fig. 2；
Fig. 4 is the pressure distributed intelligence figure that spring detection method is related in the embodiment of the present invention；
Fig. 5 is the refinement flow diagram of step S22 in Fig. 3；
Fig. 6 is the refinement flow diagram of step S221 in Fig. 5；
Fig. 7 is the flow diagram of spring detection method second embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The primary solutions of the embodiment of the present invention are: propose a kind of spring test method applied to spring test machine,
This method comprises: obtaining the pressure information of the pressure detecting module detection when each station is fixed with spring to be measured；Root
According to the pressure information, the location information of each spring to be measured is determined；Judge whether each location information is corresponding
Default positioning information matches；If matching, controls the hold-down devices and pushes according to default test parameter, so that each survey
It tries jig and compresses corresponding spring to be measured, and detect the force value that each spring compression to be measured generates.
Since in the prior art, the position that do not place to spring when spring is tested is detected, batch is being carried out to spring
When test, since manually-operated randomness is larger, position and disunity of each spring relative to test fixture not can guarantee
Test fixture on spring test machine acts on unanimously the force of each spring, is easy to cause measurement error larger, influences spring
The reliability of test result.
The present invention provides above-mentioned solution, it is intended to reduce the measurement error of spring test, improve spring test result
Reliability.
The embodiment of the present invention proposes a kind of spring test machine, tests for the fatigue behaviour to helical spring.
The hold-down devices that spring test machine specifically includes workbench and is installed on above the workbench, the workbench are set
There are multiple stations, each station is equipped with the fastener for fixed spring, and the surface of the workbench is in each institute
It states station and is equipped with pressure detecting module, the hold-down devices are equipped with multiple test fixtures, the test fixture and the station
It is arranged in a one-to-one correspondence.
Wherein, hold-down devices can be mobile toward and away from spring to be measured along the vertical direction under control of the control means, surveys
Examination jig follows the movement of hold-down devices and moves.Pressure sensor is equipped in test fixture, test fixture is in hold-down devices
When corresponding to the spring-compressed to be measured on station under drive to it, the pressure sensor in test fixture can detect spring-compressed and generate
Force value.,
Fastener is specifically used for when detecting, the bottom of helical spring being pressed in workbench.
Pressure detecting module can be specially in each station multiple spaced pressure sensors either cover work
The detection plate of all stations in platform surface, can be configured according to actual demand.
The embodiment of the present invention also proposes a kind of control device, can be applied to control spring test machine.Control device
It is built-in in spring test machine, the outside of spring test machine can also be independently disposed to.
In embodiments of the present invention, referring to Fig.1, control device includes: processor 1001, such as CPU, memory 1002
Deng.Wherein, processor 1001 is connect with memory 1002.Memory 1002 can be high speed RAM memory, be also possible to stablize
Memory (non-volatile memory), such as magnetic disk storage.Memory 1002 optionally can also be independently of preceding
State the storage device of processor 1001.
It will be understood by those skilled in the art that the restriction of the not structure twin installation of apparatus structure shown in Fig. 1, can wrap
It includes than illustrating more or fewer components, perhaps combines certain components or different component layouts.
As shown in Figure 1, as may include spring detection program in a kind of memory 1002 of readable storage medium storing program for executing.Scheming
In device shown in 1, processor 1001 can be used for that the spring stored in memory 1002 is called to detect program, and execute following
The correlation step operation of spring detection method in embodiment.
The present invention also provides a kind of spring detection methods.
Referring to Fig. 2, propose that spring detection method first embodiment of the present invention, the spring detection method include:
Step S10 obtains the pressure letter of the pressure detecting module detection when each station is fixed with spring to be measured
Breath；
Specifically, can judge whether each station is fixed with bullet to be measured by infrared induction or according to the instruction of user's input
Spring.
Wherein, when each station is fixed with spring to be measured, the pressure for obtaining the pressure detecting module detection
Before the step of information, further includes: control the hold-down devices and push preset strokes, so that each test fixture compression corresponds to
Spring to be measured.Preset strokes can be configured according to actual needs.Using this mode, it is ensured that spring to be measured is in pressure detecting
It can produce sufficiently large pressure value in module, guarantee the subsequent location information that can accurately determine spring to be measured.
Step S20 determines the location information of each spring to be measured according to the pressure information；
It can analyze to obtain position of each spring to be measured relative to workbench according to pressure information, can determine each bullet to be measured
The location information of spring.Location information is specially the coordinate in the preset coordinate system that each spring to be measured is established in spring detection machine
Parameter.
Specifically, pressure detecting module is the pressure detecting plate for covering the table surface, each spring to be measured
It is fixed on the pressure detecting plate, may particularly include referring to Fig. 3, step S20:
Step S21 generates the pressure distributed intelligence figure of the table surface according to the pressure information；
Since pressure detecting module is pressure detecting plate, the compression situation of surface any position can be detected.It is fixed with
The local pressure value of spring to be measured is larger, and the local pressure value without spring to be measured is 0.It therefore, can be according to pressure detecting plate
Pressure information detected generates the pressure distributed intelligence figure of work top.Pressure distributed intelligence chart sign is table
The compression situation of face any position.In pressure distributed intelligence figure, as shown in figure 4, different pressure can be indicated with different identification
Value, the position as pressure value is less than preset threshold indicate that pressure value is greater than or equal to the position shade of preset threshold with blank
It indicates.
Step S22 analyzes the pressure distributed intelligence figure, determines the location information of each spring to be measured.
By analyzing pressure distributed intelligence figure, it may be determined that the corresponding pressure information point generated of each spring to be measured determines pressure
Position of the force information point in pressure distributed intelligence figure can determine position of each spring to be measured in workbench in each station
Information.
In addition, when pressure detecting module is spaced pressure sensor in each station, it can be according to pressure information
It determines that the pressure value of detection is greater than the pressure sensor of preset value as sensor of interest, obtains sensor of interest in preset coordinate
Coordinate parameters in system determine the location information of spring to be measured in each station according to acquired coordinate parameters.
Step S30 judges the whether corresponding default positioning information matches of each location information；
If matching, thens follow the steps S40, if mismatching, S50 is thened follow the steps.
Specifically, different stations is respectively provided with corresponding default location information.Default location information can be according to each
The position of test fixture above a station is determined, equal each of to guarantee to place spring to be measured under same test fixture
Co-located, the relative position of the corresponding spring to be measured of different test fixtures can be unified.Specifically, can be by each survey
Conduct parameter of the midpoint that examination jig projects on the table in preset coordinate system is as default location information.It can be according to each
Station where spring to be measured obtains the corresponding default location information of each location information.In other embodiments, positioning is preset
Information can also be the preset parameter range determined according to detection jig position.
Judge that whether corresponding location information default location information be consistent, if unanimously, determining the spring to be measured
Location information and default positioning information matches can determine that the location information and default positioning letter of the spring to be measured if inconsistent
Breath mismatches.
Each spring to be measured location information with corresponding default positioning information matches when, show current spring to be measured
Position it is accurate, therefore executable step S40 is detected with the fatigue behaviour etc. to spring to be measured.In any bullet to be measured
When the location information of spring is mismatched with corresponding default location information, step S50 or step S50a can be performed.
Step S40 controls the hold-down devices and pushes according to default test parameter, so that each test fixture compression pair
The spring to be measured answered, and detect the force value that each spring compression to be measured generates.
Default test parameter specifically includes down stroke, pushes frequency, pushes number etc. to the tired survey of spring to be measured progress
Test parameter needed for examination, the setting parameter that can obtain tester's input determine.
When each test fixture compresses corresponding spring to be measured, the detection data of pressure sensor is just each in test fixture
The force value that spring compression to be measured generates.
Step S50 issues prompt information.
Prompt information is issued by modes such as text, acousto-optics, to remind the position of the current spring to be measured of tester inaccurate
Really, to remind tester to adjust the current location of spring to be measured.
A kind of spring detection method that the embodiment of the present invention proposes, a kind of spring test method of proposition are applied to spring
Test machine, by the position for determining each spring to be measured on workbench according to the pressure information of pressure detecting module detection on workbench
Confidence breath whether matching according to the corresponding default location information of identified location information, may recognize that each spring to be measured
Whether the position placed is accurate, and when spring position to be measured is accurate, hold-down devices are just controlled according under default test parameter
Pressure, so that each test fixture compresses corresponding spring to be measured, and detects the force value that each spring compression to be measured generates, by upper
State mode, it is ensured that the position that each spring to be measured is placed is unified relative to the position of test fixture, guarantees on spring test machine
Test fixture acts on the force of each spring to be measured consistent, the measurement error of reduction spring test, raising spring test result
Reliability.
Specifically, in the first embodiment, may particularly include referring to Fig. 5, step S22:
Step S221 identifies the profile of each spring to be measured in the pressure distributed intelligence figure；
The corresponding all pressure information points of each spring to be measured are identified in pressure distributed intelligence figure, according to pressure information point
Identification obtains the profile of each spring to be measured.
Step S222 determines the position feature point of each spring to be measured according to each profile；
Specifically, the central point for identifying each profile, as the position feature point.For example, profile is generally to justify
Shape, then the circular center of circle is as position feature point.
In addition, multiple points can also be chosen according to preset rules on profile, using the position feature point as each spring to be measured.
Step S223 is determined each according to location parameter of each position feature point in the pressure distributed intelligence figure
The location information of the spring to be measured.
Image coordinate of each position characteristic point in pressure distributed intelligence figure is determined as above-mentioned location parameter, according to figure
As the transformational relation between coordinate system and the preset coordinate system of spring detection machine, it is right in preset coordinate system that location parameter is converted to
The coordinate parameters answered, the location information as each spring to be measured.
In the present embodiment, the profile being correspondingly formed in pressure distributed intelligence figure by identifying spring to be measured, then pass through
Profile determines the position feature point of spring to be measured, and the location information of spring to be measured is determined according to determining position feature point, from
And it realizes the position of spring to be measured and comprehensively and accurately analyzes.
Specifically, step S221 may particularly include referring to Fig. 6:
Step S201 parses the picture point that pressure value in the pressure distributed intelligence figure is greater than or equal to preset threshold；
Preset threshold can be configured according to actual conditions, due to be placed with spring to be measured position can than be not placed with to
Pressure value detected by the position of survey spring is big, therefore pressure value can be considered more than or equal to the picture point of preset threshold
Since spring to be measured contacts generation with pressure detecting plate.
Step S202 carries out circumference identification to described image point, determines the profile of each spring to be measured.
Since helical spring is when being placed in work top, contact surface is generally circular in cross section.Therefore, circumference is carried out to picture point
Identification, can recognize the profile of each spring to be measured.
In the present embodiment, by the above-mentioned means, generating the sufficiently large picture point of pressure value just bullet to be measured for identification
The profile of spring, to guarantee the accuracy of recognized spring profile, each spring to be measured can accurately be obtained by being further ensured that
Location information.
Further, it is based on first embodiment, proposes the application spring detection method second embodiment.In second embodiment
In, may include referring to Fig. 7, step S50a
Step S51 determines the unmatched spring to be measured of the corresponding default location information of location information as abnormal bullet
Spring；
Step S52 determines the exception according to the corresponding default location information of the location information of the abnormal spring
The position runout information of spring；
Position correction information may particularly include the offset direction of abnormal spring, deviation oscillation etc..
Step S53, the station identification information of station where obtaining the abnormal spring；
Work mark identification information can be specially the number etc. of station.
Step S54 generates prompt information according to the position runout information and the station identification information；
Step S55 exports the prompt information.
By the above method, testing staff can intuitively accurate location aware deviate be which station spring and partially
From situation, to targetedly and accurately be adjusted to the position of spring to be measured, the efficiency of spring position adjustment is improved, from
And further increase spring testing efficiency.
In addition, the embodiment of the present invention also proposes a kind of readable storage medium storing program for executing, spring is stored on the readable storage medium storing program for executing
Program is detected, the spring detection program realizes the related step such as upper spring detection method any embodiment when being executed by processor
Suddenly.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that terminal device (it can be mobile phone,
Computer, server, spring test machine or the network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of spring detection method, which is characterized in that be applied to spring test machine, the spring test machine include workbench and
The hold-down devices being installed on above the workbench, the workbench are equipped with multiple stations, and each station is equipped with a use
Pressure detecting module, the pushing are equipped in each station in the surface of the fastener of fixed spring, the workbench
Device is equipped with multiple test fixtures, and the test fixture and the station are arranged in a one-to-one correspondence, and the spring detection method includes
Following steps:
When each station is fixed with spring to be measured, the pressure information of the pressure detecting module detection is obtained；
According to the pressure information, the location information of each spring to be measured is determined；
Judge the whether corresponding default positioning information matches of each location information；
If matching, controls the hold-down devices and push according to default test parameter, so that each test fixture compression corresponds to
Spring to be measured, and detect each spring to be measured and be pressurized the force value generated.
2. spring detection method as described in claim 1, which is characterized in that the pressure detecting module is to cover the work
The pressure detecting plate on platform surface, each spring to be measured is fixed on the pressure detecting plate, described according to the pressure
Information, the step of determining the location information of each spring to be measured include:
The pressure distributed intelligence figure of the table surface is generated according to the pressure information；
The pressure distributed intelligence figure is analyzed, determines the location information of each spring to be measured.
3. spring detection method as claimed in claim 2, which is characterized in that the analysis pressure distributed intelligence figure, really
The step of location information of each spring to be measured includes: calmly
In the pressure distributed intelligence figure, the profile of each spring to be measured is identified；
The position feature point of each spring to be measured is determined according to each profile；
According to location parameter of each position feature point in the pressure distributed intelligence figure, each spring to be measured is determined
Location information.
4. spring detection method as claimed in claim 3, which is characterized in that it is described according to each profile determine it is each it is described to
Survey spring position feature point the step of include:
The central point for identifying each profile, as the position feature point.
5. spring detection method as claimed in claim 3, which is characterized in that it is described in the pressure distributed intelligence figure, know
The step of profile of not each spring to be measured includes:
Parse the picture point that pressure value in the pressure distributed intelligence figure is greater than or equal to preset threshold；
Circumference identification is carried out to described image point, determines the profile of each spring to be measured.
6. spring detection method as described in claim 1, which is characterized in that when each station is fixed with spring to be measured,
Before the step of pressure information for obtaining the pressure detecting module detection, further includes:
It controls the hold-down devices and pushes preset strokes, so that each test fixture compresses corresponding spring to be measured.
7. such as spring detection method described in any one of claims 1 to 6, which is characterized in that each position of judgement
After the step of information whether corresponding default positioning information matches, further includes:
If mismatching, it is determined that the unmatched spring to be measured of the corresponding default location information of location information is as abnormal bullet
Spring；
According to the corresponding default location information of the location information of the abnormal spring, determine that the position of the abnormal spring is inclined
From information；
The station identification information of station where obtaining the abnormal spring；
Prompt information is generated according to the position runout information and the station identification information；
Export the prompt information.
8. a kind of control device, which is characterized in that the control device includes: memory, processor and is stored in the storage
On device and the spring detection program that can run on the processor, reality when spring detection program is executed by the processor
Now the step of spring detection method as described in any one of claims 1 to 7.
9. a kind of spring test machine, which is characterized in that the spring test machine includes:
Workbench is equipped with multiple stations, and each station is equipped with the fastener for fixed spring, the workbench
Surface is equipped with pressure detecting module in each station；
Hold-down devices are installed on above the workbench, and the hold-down devices are equipped with multiple test fixtures, the test fixture and
The station is arranged in a one-to-one correspondence；
Control device as claimed in claim 8, the pressure detecting module and the hold-down devices with the control device
Connection.
10. a kind of readable storage medium storing program for executing, which is characterized in that spring detection program is stored on the readable storage medium storing program for executing, it is described
The step of spring detection program realizes the spring detection method as described in any one of claims 1 to 7 when being executed by processor.
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| CN110794213A (en) * | 2019-11-07 | 2020-02-14 | 建新赵氏科技有限公司 | Detection method of anti-pinch strip resistance value test equipment |
| CN114636534A (en) * | 2022-02-09 | 2022-06-17 | 广州兴森快捷电路科技有限公司 | Oven fixture spring detection device and method, storage medium and oven equipment |
| CN117740281A (en) * | 2024-02-19 | 2024-03-22 | 苏州市产品质量监督检验院(苏州市质量技术监督综合检验检测中心、苏州市质量认证中心) | Mattress spring compression test system |
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| CN110794213A (en) * | 2019-11-07 | 2020-02-14 | 建新赵氏科技有限公司 | Detection method of anti-pinch strip resistance value test equipment |
| CN110794213B (en) * | 2019-11-07 | 2022-03-04 | 建新赵氏科技有限公司 | Detection method of anti-pinch strip resistance value test equipment |
| CN114636534A (en) * | 2022-02-09 | 2022-06-17 | 广州兴森快捷电路科技有限公司 | Oven fixture spring detection device and method, storage medium and oven equipment |
| CN117740281A (en) * | 2024-02-19 | 2024-03-22 | 苏州市产品质量监督检验院(苏州市质量技术监督综合检验检测中心、苏州市质量认证中心) | Mattress spring compression test system |
| CN117740281B (en) * | 2024-02-19 | 2024-04-26 | 苏州市产品质量监督检验院(苏州市质量技术监督综合检验检测中心、苏州市质量认证中心) | Mattress spring compression test system |
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