CN106338412A - Anti-torsion fatigue strength test device and test method for furniture structure joints - Google Patents

Anti-torsion fatigue strength test device and test method for furniture structure joints Download PDF

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Publication number
CN106338412A
CN106338412A CN201610907665.XA CN201610907665A CN106338412A CN 106338412 A CN106338412 A CN 106338412A CN 201610907665 A CN201610907665 A CN 201610907665A CN 106338412 A CN106338412 A CN 106338412A
Authority
CN
China
Prior art keywords
torsion
test
fatigue strength
test specimen
loading
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610907665.XA
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Chinese (zh)
Inventor
吴智慧
杨子倩
关惠元
祁忆青
陶泽成
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Nanjing Forestry University
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Nanjing Forestry University
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Publication date
Application filed by Nanjing Forestry University filed Critical Nanjing Forestry University
Priority to CN201610907665.XA priority Critical patent/CN106338412A/en
Publication of CN106338412A publication Critical patent/CN106338412A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00Subject matter not provided for in other groups of this subclass
    • G01M99/001Testing of furniture, e.g. seats or mattresses
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00Subject matter not provided for in other groups of this subclass
    • G01M99/007Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/26Investigating twisting or coiling properties
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001Type of application of the stress
    • G01N2203/0005Repeated or cyclic

Abstract

The invention provides an anti-torsion fatigue strength test device and test method for furniture structure joints. The structure comprises a work bench, a torsion loading unit and a computer control system. The test method includes: (1) installation and clamping of a test piece; (2) installation and adjustment of a torsion loading head; (3) setting the torque value and conducting torque cyclic loading; and (4) torsion test. The device and method have the advantages: 1) being applicable to test of anti-torsion fatigue strength and durability of structural joint components of furniture when subjected to torsion load; 2) providing experimental basis for studying the strength of the structural joints of furniture; 3) being capable of configuring one or more groups of torsion loading unit to adapt to different quantities of test pieces at the same time and capable of realizing simultaneous inward or outward torsion test on the test pieces through two-group combination.

Description

A kind of furnature construction node anti-torsion fatigue strength tester and method of testing
Technical field
The present invention relates to a kind of furnature construction node and junction node anti-torsion fatigue strength tester and method of testing, The furnature construction optimization, structure design, joint research and the strength test that are suitable for unlike material provide test basis, belong to material Material and product testing technical field.
Background technology
Furnature construction node and joint are the places being also easy to produce destruction during furniture uses most, the property to furniture material Energy, structure design, bond strength require highest, and the detection of the structural strength at furniture node and stress analysis not only affect furniture The shape-designing of designer, also new for the research and development of new material, the integrally-built optimization design of furniture and furniture to scientific research personnel The research of the high intensity joining technique of material has great theory and practice meaning.At present both at home and abroad to furnature construction node or connect Close node torsional fatigue strength do not have clear and definite method of testing and specification, the present invention be research in different furniture materials, no The endurance torsion fatigue of the furniture parts node under same joinery and its construction, different metal connecting-piece structure and different glue kind junction form Intensity, provides test basis for research furnature construction node strength performance, grinds for furniture new material high intensity joining technique Send out, the research of furniture Whole Structure Optimation Design technology has important theory directive significance and actual application value.
Content of the invention
Proposed by the present invention is a kind of furnature construction node anti-torsion fatigue strength tester and method of testing, its purpose It is intended to overcome the above-mentioned deficiency existing for prior art, can be widely applied to test furnature construction node component by torsional load When anti-torsion fatigue strength and its durability, be the furnature construction optimization of unlike material, structure design, engage research, structure Node strength provides test basis with stress distribution test.
The technical solution of the present invention: a kind of furnature construction node anti-torsion fatigue strength tester, its structure bag Include workbench, reverse loading unit and computer control system, wherein reverse torsion loading head (the u-shaped fixture in loading unit 4th, torque sensor 5, rotary cylinder 6, bearing spider and base plate 7) and stationary fixture 3, fixture 8, pass through adjusting screw rod 9 He respectively Groove on dovetail groove on t template 12, stationary platen 2, bridge plate 13 carries out installation, regulation and the locking of position, realizes to test specimen 11 clamping and torsion load;Computer control system 10 is installed on the table by turning arm, or the shape of independent operation bench Formula split is arranged, for manipulating loading unit.
The method tested with furnature construction node anti-torsion fatigue strength tester, comprises the steps:
(1) install and clamp test specimen;
(2) install and adjust torsion loading head;
(3) set torque value and carry out torsional cycles loading;
(4) torsion test is automatically controlled and processed by computer control system.
Advantages of the present invention:
1) can be widely applied to test anti-torsion fatigue strength when by torsional load of furnature construction node component and its resistance to Property long, especially studies and engages shape in different furniture materials, different joinery and its construction, different metal connecting-piece structure and different glue kind The endurance torsion fatigue strength of the furniture parts node under formula;
2) test basis can be provided for research furnature construction node strength performance, for furniture new material high intensity joining technique Research and development, the research of furniture Whole Structure Optimation Design technology have important theory directive significance and actual application value;
3) this test device, can configure 1 group or multigroup torsion loading unit, while to adapt to varying number test specimen as needed Test;Also loading unit common combinations can be reversed by 2 groups and test specimen is realized simultaneously with inwardly or simultaneously outside torsion test;Test examination Part can be two-dimentional fastener, three-dimensional fastener or two-dimentional bool etc., and its section can be square circular or oval etc..
Brief description
Fig. 1 is the structural representation of furnature construction node anti-torsion fatigue strength tester.
Fig. 2 is that 2 groups of torsion loading unit common combinations realize simultaneously inside or outwards torsion test signal simultaneously to test specimen Figure.Test test specimen 11 can be two-dimentional fastener, three-dimensional fastener or two-dimentional bool etc., and its section can be square, circular Or ellipse etc..
The 1 of in figure is machine frame, 2 is stationary platen, 3 is stationary fixture, 4 is u-shaped fixture, 5 is torque sensor, 6 is Rotary cylinder (air motor), 7 be bearing spider and base plate, 8 be fixture, 9 be adjusting screw rod, 10 be computer control system, 11 it is test test specimen (furnature construction node), 12 be t template, 13 be bridge plate.
Specific embodiment
A kind of furnature construction node anti-torsion fatigue strength tester, its structure includes workbench, reverses loading unit And computer control system, wherein reverse torsion loading head (u-shaped fixture 4, torque sensor 5, the rotary cylinder in loading unit 6th, bearing spider and base plate 7) and stationary fixture 3, fixture 8, pass through respectively on adjusting screw rod 9 and t template 12, stationary platen 2 Groove on dovetail groove, bridge plate 13 carries out installation, regulation and the locking of position, realizes the clamping to test specimen 11 and reverses loading;Meter Calculation machine control system 10 is installed on the table by turning arm, or the form split setting of independent operation bench, adds for manipulation Carrier unit.
The workbench of described device, its structure is including machine frame 1, stationary platen 2, t template 12 and bridge plate 13, wherein Stationary platen 2 is arranged on machine frame 1 side, and t template 12 is fixed on machine frame 1, and bridge plate 13 is arranged on stationary platen 2.
Described torsion loading unit, its structure includes stationary fixture 3 and reverses loading head, wherein reverses loading head by u Type fixture 4, torque sensor 5, rotary cylinder 6, bearing spider and base plate 7 are connected to form, and by u-shaped fixture 4 and stationary fixture 3 Realize the clamping to furnature construction node test test specimen 11 and reverse loading;Reversing loading unit can be 1 group or multigroup, commonly use 2 groups.
The method tested with furnature construction node anti-torsion fatigue strength tester, comprises the steps:
(1) install and clamp test specimen;
(2) install and adjust torsion loading head;
(3) set torque value and carry out torsional cycles loading;
(4) torsion test is automatically controlled and processed by computer control system.
Described step (1) is installed and clamping test specimen: determines species and the test request of furnature construction node to be measured, determines Loading position, furnature construction specimen joints 11 to be measured is arranged on stationary fixture 3, by stationary fixture 3 on stationary platen 2 Dovetail groove carry out installation, regulation and the locking of position.
Described step (2) is installed and is adjusted and reverses loading head: right by the t template 12 on adjusting screw rod 9 and workbench Reverse loading head and carry out position adjustments, make u-shaped fixture 4 clamping test pieces 11, and it is same so that u-shaped fixture 4 and test test specimen 11 is maintained at One horizontal axis position, can configure 1 group or multigroup torsion loading unit as needed, to adapt to survey while varying number test specimen Examination;Also by 2 u-shaped fixtures 4, test specimen 11 can be tested to l type or t type and is realized simultaneously by 2 groups of torsion loading unit common combinations Inwardly or simultaneously outside torsion test, the 3rd end testing test specimen to t type also can be clamped by fixture 8;Test test specimen 11 can To be two-dimentional fastener, three-dimensional fastener or two-dimentional bool etc., its section can be square circular or oval etc..
Described step (3) sets torque value and carries out torsional cycles loading: by computer control system 10 and moment of torsion Sensor 5, controls rotary cylinder 6 to require to carry out torsional cycles loading to test specimen 11 according to the torque value that testing experiment sets, and Torsion test number of times is recorded respectively by torque sensor 5 and computer control system 10.
Described step (4) torsion test is automatically controlled and processed by computer control system: entirely reverses load test Process is automatically controlled by computer control system 10, data processing, monitor in real time and real-time show;Control system can calculate and defeated Go out result, by the load applying according to default output form, automatic output numerical value and the corresponding chart of drafting;When test test specimen 11 After torsion damages or reaches the torsion test number of times of setting, load test can autostop.
Comparison Fig. 1, the structural representation of furnature construction node anti-torsion fatigue strength tester, by u-shaped fixture 4, turn round Square sensor 5, rotary cylinder 6, bearing spider and base plate 7 are connected to form torsion loading head, reverse loading head and stationary fixture 3 (or fixture 8) composition reverses loading unit, and respectively by the dovetail groove on adjusting screw rod 9 and t template 12, stationary platen 2, bridge Groove on plate 13 carries out installation, regulation and the locking of position, realizes the clamping to test specimen 11 and torsion loading, u-shaped fixture 4 and survey Part 11 of having a try is maintained at same level axial location;Reversing loading unit can be 1 group or multigroup, commonly use 2 groups.
Comparison Fig. 2, is 2 groups and reverses loading unit common combinations test specimen is realized simultaneously with inwardly or simultaneously outside torsion test Schematic diagram, l type or t type test block 11 are clamped by the u-shaped fixture 4 of 2 groups of torsion loading units simultaneously, also by fixture 8, t type can be surveyed Have a try the 3rd end of part is clamped;Test test specimen 11 can be two-dimentional fastener, three-dimensional fastener or two-dimentional bool etc., its Section can be square, circular or oval etc..

Claims (8)

1. a kind of furnature construction node anti-torsion fatigue strength tester, its structure include workbench, reverse loading unit and Computer control system, wherein reverses torsion loading head and stationary fixture, the fixture in loading unit, passes through adjusting screw rod respectively Carry out installation, regulation and the locking of position with the dovetail groove on the stationary platen in t template, workbench, the groove on bridge plate, realize Clamping to test specimen and torsion load;Computer control system is installed on the table by turning arm, or independent operation bench Form split is arranged, for manipulating loading unit.
2. a kind of furnature construction node anti-torsion fatigue strength tester according to claim 1, is characterized in that described Device workbench, its structure is including machine frame, stationary platen, t template and bridge plate, and wherein stationary platen is arranged on board Frame side, t template is fixed on machine frame, and bridge plate is arranged on stationary platen.
3. a kind of furnature construction node anti-torsion fatigue strength tester according to claim 1, is characterized in that described Torsion loading unit, its structure include stationary fixture and reverse loading head, wherein reverse loading head by u-shaped fixture, moment of torsion pass Sensor, rotary cylinder, bearing spider and base plate are connected to form, and are realized to furnature construction node with stationary fixture by u-shaped fixture The clamping of test test specimen and torsion load;Reversing loading unit is 1 group or multigroup, commonly uses 2 groups.
4. the method for testing of furnature construction node anti-torsion fatigue strength tester as claimed in claim 1, is characterized in that The method comprises the steps:
(1) install and clamp test specimen;
(2) install and adjust torsion loading head;
(3) set torque value and carry out torsional cycles loading;
(4) torsion test is automatically controlled and processed by computer control system.
5. the method for testing of a kind of furnature construction node anti-torsion fatigue strength tester according to claim 4, its Feature is that described step (1) is installed and clamping test specimen: determines species and the test request of furnature construction node to be measured, determines and add Carry position, furnature construction specimen joints to be measured are arranged on stationary fixture, by dovetail on stationary platen for the stationary fixture Groove carries out installation, regulation and the locking of position.
6. the method for testing of a kind of furnature construction node anti-torsion fatigue strength tester according to claim 4, its Feature is that torsion loading head is installed and adjusted to described step (2): is added to reversing by the t template on adjusting screw rod and workbench Carrier head carries out position adjustments, makes u-shaped fixture clamping test pieces, and makes u-shaped fixture be maintained at same level axis position with test test specimen Put, can configure 1 group or multigroup torsion loading unit as needed, to adapt to test while varying number test specimen;Also can be by 2 groups Reverse loading unit common combination, by 2 u-shaped fixtures, l type or t type are tested with test specimen and realize inwardly or simultaneously outwards turning round simultaneously Turn test, the 3rd end testing test specimen to t type also can be clamped by fixture;Test test specimen is two-dimentional fastener, three-dimensional joint Part or two-dimentional bool, its section is square circular or oval.
7. the method for testing of a kind of furnature construction node anti-torsion fatigue strength tester according to claim 4, its Feature is that described step (3) sets torque value and carries out torsional cycles loading: by computer control system and torque sensing Device, controls rotary cylinder to require to carry out torsional cycles loading to test specimen according to the torque value that testing experiment sets, and is passed by moment of torsion Sensor and computer control system record torsion test number of times respectively.
8. the method for testing of a kind of furnature construction node anti-torsion fatigue strength tester according to claim 4, its Step (4) torsion test that feature is described is automatically controlled and processed by computer control system: whole torsion load test mistake Journey is automatically controlled by computer control system, data processing, monitor in real time and real-time show;Control system can calculate and export knot Really, by the load applying according to default output form, automatic output numerical value and the corresponding chart of drafting;Damage when test test specimen reverses After torsion test number of times that is bad or reaching setting, load test can autostop.
CN201610907665.XA 2016-10-18 2016-10-18 Anti-torsion fatigue strength test device and test method for furniture structure joints Pending CN106338412A (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108414221A (en) * 2018-03-02 2018-08-17 重庆理工大学 A kind of fluid torque-converter end cap torsional fatigue strength test method
CN113640159A (en) * 2021-08-24 2021-11-12 安徽省汉博科技有限公司 Fatigue strength testing device for furniture node joint
CN113924464A (en) * 2019-05-10 2022-01-11 萨克提斯有限责任公司 Method for measuring a structure, and a procedure for defining an optimal method for measuring said structure

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108414221A (en) * 2018-03-02 2018-08-17 重庆理工大学 A kind of fluid torque-converter end cap torsional fatigue strength test method
CN113924464A (en) * 2019-05-10 2022-01-11 萨克提斯有限责任公司 Method for measuring a structure, and a procedure for defining an optimal method for measuring said structure
CN113640159A (en) * 2021-08-24 2021-11-12 安徽省汉博科技有限公司 Fatigue strength testing device for furniture node joint
CN113640159B (en) * 2021-08-24 2023-11-10 安徽省汉博科技有限公司 Fatigue strength testing device for furniture node connection part

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