CN106840907A - A kind of reliability test system of controllable metal test block stress state - Google Patents

A kind of reliability test system of controllable metal test block stress state Download PDF

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Publication number
CN106840907A
CN106840907A CN201710049961.5A CN201710049961A CN106840907A CN 106840907 A CN106840907 A CN 106840907A CN 201710049961 A CN201710049961 A CN 201710049961A CN 106840907 A CN106840907 A CN 106840907A
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China
Prior art keywords
test block
guide rod
test
platform
load
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Granted
Application number
CN201710049961.5A
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Chinese (zh)
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CN106840907B (en
Inventor
钟雯
王宇
张庆功
刘渝
杨昌明
周立平
向中凡
陈朴
童俊
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Xihua University
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Xihua University
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Publication of CN106840907A publication Critical patent/CN106840907A/en
Priority to FR1850335A priority patent/FR3062208B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/22—Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/14—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulum; generated by springs tension
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/06—Special adaptations of indicating or recording means
    • G01N3/066—Special adaptations of indicating or recording means with electrical indicating or recording means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0026—Combination of several types of applied forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0032—Generation of the force using mechanical means
    • G01N2203/0033—Weight
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/0202—Control of the test
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0682—Spatial dimension, e.g. length, area, angle
    • 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
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The invention discloses a kind of reliability test system of controllable metal test block stress state, including industrial computer, experiment work platform, deformeter, rotation speed servo motor and moment of torsion servomotor；Experiment work platform includes platform base, mobile platform and test block pedestal, and platform base bottom is provided with ball screw and guide rod, and mobile platform is arranged on ball screw and guide rod by screwed hole and pilot hole；Test block pedestal is fixed on a mobile platform；Test block is fixed through the mounting hole on test block pedestal using torque nut；Foil gauge is pasted in test block；Platform base top is provided with load guide rod, and load lower end of the guide rod is contacted with test block；Load guide rod is connected with counterweight；Rotation speed servo motor connection is connected in ball screw through one end of platform base, moment of torsion servomotor with the outer surface of torque nut.The present invention can control the stress state of metal coupons in process of the test, obtain the metal coupons reliability test result under different operating modes.

Description

A kind of reliability test system of controllable metal test block stress state
Technical field
The present invention relates to a kind of reliability test system of controllable metal test block stress state, it can be in process of the test The stress state of metal coupons is controlled, and studies its micromechanism of damage.
Background technology
In most cases, after metal is processed to parts, it is mechanical entirety to assembly.Transmission therein, receives Prestressing force effect is suffered from assembling for power part and the change with the time produces change.Operationally, these parts are received again To service load repeated action, the situation of reliability reduction will necessarily be gone out.
The content of the invention
The present invention is to solve above-mentioned deficiency, there is provided a kind of reliability testing system of controllable metal test block stress state System.
Above-mentioned purpose of the invention is realized by following technical scheme：A kind of controllable metal test block stress state can By property test system, including industrial computer, experiment work platform, deformeter, rotation speed servo motor and moment of torsion servomotor；Institute State deformeter, rotation speed servo motor and moment of torsion servomotor connection industrial computer；
The experiment work platform includes platform base, mobile platform and test block pedestal, and platform base bottom sets " Qian " shape Groove, " Qian " shape groove both sides are provided with mounting hole, and are provided with ball screw and guide rod, and mobile platform is pacified by screwed hole and pilot hole On ball screw and guide rod；Test block pedestal is in " Qian " shape, and test block pedestal is bolted on mobile platform by bottom； Test block is fixed through the mounting hole on test block pedestal using torque nut；Foil gauge, foil gauge and strain are pasted in the test block Instrument is connected；
The platform base top is provided with crossbeam, and crossbeam is provided with pilot hole, and pilot hole is provided with load guide rod, and load is led Bar lower end contacts so as to imposed load with test block；Load guide rod upper end has been connected through a screw thread counterweight, so as to produce test load；
The rotation speed servo motor connection is in ball screw through one end of platform base, the moment of torsion servomotor inner side Six side's mounting holes are provided with, six side's mounting holes are inserted in torque nut connection.
Know-why of the invention is：
1st, test load is loaded by the counterweight on experiment work platform；
The 2nd, two servomotors, a movement velocity for control test block, a control examination are installed on experimental work platform Block tightens clamp force；
3rd, foil gauge is pasted in test block to measure deformation of the test block in process of the test, then by deformation signal by answering Become instrument and feed back to industrial computer；
Specially：Test block is stressed effect and is deformed, and the foil gauge being attached in test block is deformed therewith, foil gauge Resistance variations can be produced after deformation, voltage change is caused therewith, deformeter amplifies this voltage change, and filters out many Computer is passed to after remaining signal, computer is by this signal acquisition and records, together with the demarcation information of foil gauge, The stressing conditions of test block can just be monitored.
4th, industrial computer is tightened on the one hand according to the feedback information of deformeter according to experiment preset requirement control test block Power, on the other hand controls test block movement velocity according to preset requirement.Imposed load, movement velocity, stress in process of the test-should Become data to be gathered and recorded by industrial computer.
Torque nut is linked together with servomotor, and servomotor is moved by Serve Motor Control.Servomotor termination There is six side's mounting hole in, torque nut outer surface is also machined to outer six sides, interior six side of servomotor is put into during installation In mounting hole.Metal coupons termination is threaded rod, and torque nut endoporus is screwed hole, and screw thread is passed through during installation by test block and torsion Nut is coupled together.During work, servomotor drives interior six side's mounting holes rotation, and the outer six sides surface of torque nut is driven therewith Rotation, transfers torque in test block finally by screw thread.
Before on-test, the counterweight of different size is selected, so as to realize that the load under different condition is loaded.On-test Afterwards, the rotating speed that industrial computer passes through rotation speed servo motor control ball screw, so as to control the translational speed of mobile platform；Examination Foil gauge is pasted on block test block deformation is fed back into industrial computer by deformeter, industrial computer is according to sets requirement The output torque of control mode servomotor, thus during Control experiment test block deformation.
Present invention advantage compared with prior art is：The present invention can control the stress of metal coupons in process of the test State, obtains the metal coupons reliability test result under different operating modes.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of experiment workbench in the present invention.
Fig. 3 is the structural representation of mobile platform in the present invention.
Fig. 4 is the attachment structure schematic diagram of rotating speed servomotor and torque nut in the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, a kind of reliability test system of controllable metal test block stress state, including industry control is calculated Machine 1, experiment work platform 2, deformeter 3, rotation speed servo motor 4 and moment of torsion servomotor 5；The deformeter 3, rotation speed servo electricity Machine 4 and the connection industrial computer 1 of moment of torsion servomotor 5；
The experiment work platform 2 includes platform base 2-1, mobile platform 2-2 and test block pedestal 2-3, platform base 2-1 Bottom sets " Qian " shape groove 2-4, " Qian " shape groove 2-4 both sides and is provided with mounting hole 2-5, and is provided with ball screw 2-6 and guide rod 2-7, Mobile platform 2-2 is arranged on ball screw 2-6 and guide rod 2-7 by screwed hole (diagram is not shown) and pilot hole 2-8；Test block Pedestal 2-1 is in " Qian " shape, and test block pedestal 2-1 is fixed on mobile platform 2-2 by the bolt (not shown) of bottom；Test block 2-9 is fixed through the mounting hole 2-10 on test block pedestal 2-3 using torque nut 2-11；Foil gauge is pasted on the test block 2-9 2-12, foil gauge 2-12 is connected with deformeter 3；
The platform base 2-1 tops are provided with crossbeam 2-13, and crossbeam 2-13 is provided with pilot hole 2-14, pilot hole 2-14 peaces Equipped with load guide rod 2-15, load guide rod 2-15 lower ends contact so as to imposed load with test block 2-9；Load guide rod 2-15 upper ends lead to Cross and be threaded with counterweight 2-16, so as to produce test load；
The rotation speed servo motor 4 is connected to ball screw 2-6 through one end of platform base 2-1, the moment of torsion servo The inner side of motor 5 is provided with six side's mounting hole 5-1, six side's mounting hole 5-1 and is inserted in torque nut 2-11 connections.
Know-why of the invention is：
1st, test load is loaded by the counterweight on experiment work platform；
The 2nd, two servomotors, a movement velocity for control test block, a control examination are installed on experimental work platform Block tightens clamp force；
3rd, foil gauge is pasted in test block to measure deformation of the test block in process of the test, then by deformation signal by answering Become instrument and feed back to industrial computer；
4th, industrial computer is tightened on the one hand according to the feedback information of deformeter according to experiment preset requirement control test block Power, on the other hand controls test block movement velocity according to preset requirement.Imposed load, movement velocity, stress in process of the test-should Become data to be gathered and recorded by industrial computer.
Before on-test, the counterweight of different size is selected, so as to realize that the load under different condition is loaded.On-test Afterwards, the rotating speed that industrial computer passes through rotation speed servo motor control ball screw, so as to control the translational speed of mobile platform；Examination Foil gauge is pasted on block test block deformation is fed back into industrial computer by deformeter, industrial computer is according to sets requirement The output torque of control mode servomotor, thus during Control experiment test block deformation.
In the present invention, change the structure of load guide rod, it is possible to realize the different contact forms such as adhesion, slip, rolling.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (1)

1. a kind of reliability test system of controllable metal test block stress state, it is characterised in that：Including industrial computer, experiment Workbench, deformeter, rotation speed servo motor and moment of torsion servomotor；The deformeter, rotation speed servo motor and moment of torsion servo Motor connection industrial computer；
The experiment work platform includes platform base, mobile platform and test block pedestal, and platform base bottom sets " Qian " shape groove, " Qian " shape groove both sides are provided with mounting hole, and are provided with ball screw and guide rod, and mobile platform is installed by screwed hole and pilot hole On ball screw and guide rod；Test block pedestal is in " Qian " shape, and test block pedestal is bolted on mobile platform by bottom；Examination Block is fixed through the mounting hole on test block pedestal using torque nut；Foil gauge, foil gauge and deformeter are pasted in the test block Connection；
The platform base top is provided with crossbeam, and crossbeam is provided with pilot hole, and pilot hole is provided with load guide rod, under load guide rod End contacts so as to imposed load with test block；Load guide rod upper end has been connected through a screw thread counterweight, so as to produce test load；
The rotation speed servo motor connection is provided with ball screw through one end of platform base, the moment of torsion servomotor inner side Six side's mounting holes, six side's mounting holes are inserted in torque nut connection.
CN201710049961.5A 2017-01-20 2017-01-20 Reliability test system for controllable metal test block stress state Active CN106840907B (en)

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CN201710049961.5A CN106840907B (en) 2017-01-20 2017-01-20 Reliability test system for controllable metal test block stress state
FR1850335A FR3062208B1 (en) 2017-01-20 2018-01-16 RELIABILITY TEST SYSTEM IN A STRESSED STATE OF A CONTROLLABLE METALLIC SPECIMEN

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CN107870135A (en) * 2017-12-13 2018-04-03 西华大学 The cable life test device and method of testing of a kind of variable element
CN113777027A (en) * 2021-09-10 2021-12-10 西北有色金属研究院 Device and method for evaluating adhesion performance of bolt and nut threads and surface coatings thereof

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CN107870135A (en) * 2017-12-13 2018-04-03 西华大学 The cable life test device and method of testing of a kind of variable element
CN113777027A (en) * 2021-09-10 2021-12-10 西北有色金属研究院 Device and method for evaluating adhesion performance of bolt and nut threads and surface coatings thereof

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Publication number Publication date
CN106840907B (en) 2023-07-25
FR3062208A1 (en) 2018-07-27
FR3062208B1 (en) 2022-07-15

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