CN201203558Y - Microcomputer control stress relaxation tester - Google Patents
Microcomputer control stress relaxation tester Download PDFInfo
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- CN201203558Y CN201203558Y CNU2008200605786U CN200820060578U CN201203558Y CN 201203558 Y CN201203558 Y CN 201203558Y CN U2008200605786 U CNU2008200605786 U CN U2008200605786U CN 200820060578 U CN200820060578 U CN 200820060578U CN 201203558 Y CN201203558 Y CN 201203558Y
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Abstract
A microcomputer control stress relaxation test machine comprises a combined machine frame, a transmission loading system, a microcomputer control servo system and a calibration system; the combined machine frame is composed of a machine base and a four-vertical bar load frame composed of a connecting base plate, a vertical bar, a middle support and a tailstock support of a sensor support, the load frame is fixed above the machine base; the transmission loading system is composed of a servo motor, a speed reducer, a synchronous toothed belt wheel group, a ball screw and a bearing base, wherein the servo motor is arranged in the machine base and is shaft connoted with the speed reducer and an active wheel in the synchronous toothed belt wheel group, and is composed to a power transmission mechanism with another driven synchronous toothed belt wheel; the microcomputer control servo system comprises a load sensor with small range, a load sensor with large range and an electric machine, wherein the load sensor with small range is arranged on the sensor support composed to the load frame, the load sensor with large range is arranged on the left end of the ball screw; the calibration system is fixed on a reverse frame apparatus on the four-vertical bar load frame.
Description
Technical field
The utility model relates to a kind of stress relaxometer, especially a kind of system controlled by computer stress relaxometer, the mensuration of the stress relaxation ability of various metal materials is measured by the testing laboratory that is mainly used in industries such as relevant scientific research institutions, universities and colleges, industrial and mining enterprises, traffic quality inspection.Be used for detecting, whether reach the regulation requirement with the stress relaxation ability of judging various metals by the mechanical property test of GB/T10120-1996 " metal stresses relaxation test method ".
Background technology
The content of the test that the mechanical property of GB/T10120-1996 " metal stresses relaxation test method " detects comprises: the tensile stress relaxation test of various metals and the lax test of bending stress.The utility model is mainly tested the tensile stress relaxation performance of metal.Concrete process of the test is: sample-intermediate plate-chuck assembly is fixed in the ball seat of two ends, again sample is applied prestretching force, prestretching force is no more than 10% of primary stress, and is not more than 10MPa.Beginning is formal to load, and the time that applies whole initial trial power should not surpass 10min.Even initial overall strain or total deformation at zero-time stress sample keep constant.Should in applying test power process, constantly regulate overall strain or total deformation invariant control system, to guarantee being in equilibrium state in the zero-time for this reason.Fluctuation in the strain of duration of test sample should be controlled at ± and 2.5 * 10
-5In the mm/mm.Continuous or time recording is tested power, and the initial overall strain or the total deformation of monitoring sample, until off-test.
The framed structure of system controlled by computer stress relaxometer can be divided into vertical and horizontal two kinds.But the height of vertical type can be restricted because of the testing laboratory space, its test specification be 1 meter with interior sample, and to loading and unloading sample cause certain degree of difficulty.At present, therefore common horizontal stress relaxometer does not possess capacity rating owing to do not carry reverse shelf structure.Timing signal needs unload sensor and controller to demarcate to other machine, has not only increased operating personnel's working strength, and just sensor and controller has been demarcated, so can not represent the accuracy of the power value of complete machine.(because of: the mounting means of sensor and loading mode are all influential to the accuracy of power value).
The utility model content
The purpose of this utility model: the system controlled by computer stress relaxometer that aims to provide is horizontal type, and compared to vertical type, but the test specimens length range is bigger, is beneficial to the otherness of measuring sample.In addition, than other common horizontal types, the utility model carries calibration system, can be directly in the oppositely demarcation of the enterprising line sensor of frame crossbeam, a kind of test accuracy height, system controlled by computer stress relaxometer with a high credibility, easy to use are provided, to solve the defective that prior art exists, satisfy of the requirement of GB/T10120-1996 " metal stresses relaxation test method " standard to checkout equipment.The technical scheme in the invention for solving the technical problem is as follows:
This system controlled by computer stress relaxometer comprises combined rack, transmission loading system, system controlled by computer servo-drive system, calibration system; It is characterized in that:
A, described combined rack comprise by support with constitute by being connected the four upright thick stick load frame that seat board, Li Gang, sensor stand intermediate support and tailstock support form, this load frame is fixed on the support top;
B, described transmission loading system are made up of servomotor, reductor, synchronous cog belt wheels, ball screw assembly,, bearing seat; Servomotor wherein is located in the support, and reductor that is connected with this servomotor and the driving wheel in the synchronous cog belt wheels are coupling, and forms the main driving machine structure; Form power transmission mechanism by the synchronous cog belt of coupling with taking turns by the ball screw assembly, that is fixed on the bearing seat support that is connected on the seat board-driven synchronous cog belt; This driven synchronizing jugged belt wheel connects the drive ball screw assembly, by key;
C, described system controlled by computer servo-drive system comprise journey load sensor, wide range load sensor and motor in a small amount, a small amount of journey load sensor wherein is located on the sensor stand that constitutes load frame, and described wide range load sensor then is located at the left end of ball screw assembly;
D, described calibration system are for being fixed on the reverse rack device on the four upright thick stick load frame by whippletree, it comprises one group of whippletree, crossbeam, pressing plate and hand-operated lifting supporting plate, and oppositely the space between rack device and the combined rack is the demarcation space of large and small range load sensor; Described two whippletrees are threaded with the seat board that is connected in the combined rack, and whippletree is propped crossbeam, and fixedly a plate is propped the hand-operated lifting supporting plate below crossbeam, with supporting plate pressing plate is risen to the crossbeam central hole, with latch pressing plate is fixed on the crossbeam.
According to this system controlled by computer stress relaxometer that above technical scheme proposes, it is really as follows to have beneficial effect:
1, adopts the utility model system controlled by computer stress relaxometer to test, be equipped with the sensor of big/little two ranges the sample of 1-3 rice.Short sample can be tested on little range sensors, has improved measuring accuracy.
2, the utility model carries calibration system, before testing, can be directly on reverse frame to greatly/sensor of little range demarcates, operating personnel's loading and unloading have been saved, the working routine of carrying sensor has been accelerated work efficiency, has more improved the accuracy of nominal data.
3, adopt the electro-hydraulic servo control method to control, loading speed is controlled, protects automatically and carries, test convenient and swift, the automaticity height.Because the test period of each test is grown (about 100 hours), in software interface, real-time prompting test progress, convenient understanding test situation.
Description of drawings
Fig. 1 is the structural representation of the system controlled by computer stress relaxometer that provides of the utility model;
Fig. 2 is the transmission loading system of the system controlled by computer stress relaxometer that provides of the utility model;
Fig. 3 is the calibration system of the system controlled by computer stress relaxometer that provides of the utility model;
Fig. 4 is the system controlled by computer servo-drive system theory diagram of the system controlled by computer stress relaxometer that provides of the utility model.
Embodiment
Further specify a kind of better embodiment of the present utility model below in conjunction with accompanying drawing:
Shown in Fig. 1 the utility model structural representation, the utility model system controlled by computer stress relaxometer comprises combined rack, transmission loading system, system controlled by computer servo-drive system, calibration system;
Described combined rack comprises support 101, connects seat board 102, founds parts compositions such as thick stick 103, sensor stand 104, intermediate support 105 and tailstock support 106 four upright thick stick load frame.Load frame is fixed on support 101 tops; Described upright thick stick 103 runs through whole framework, connects to connect seat board 102, sensor stand 104, intermediate support 105, tailstock support 106; Described transmission loading system comprises motor 201, reductor 202, synchronizing jugged belt wheel 203, ball screw assembly, 204, bearing seat 205.
Described transmission loading system drives reductor 202 rotations by motor 201, reductor 202 drives the driving wheel of synchronous cog belt wheels 203, through Synchronous Belt Drives, the rotation of drive engaged wheel, connect the nut rotation that drives ball screw assembly, 204 through key, drive ball-screw 204 straight lines at last and move, the process that sample is loaded; Described system controlled by computer servo-drive system comprises journey load sensor 301, wide range load sensor 302 and motor 201 in a small amount; Described sensor stand 104 is connected with little range sensors 301-ball seat-jacket assembly; Described tailstock support 106 is connected with ball seat-jacket assembly; Described ball screw assembly, 204 is connected with wide range sensor 302-ball seat-jacket assembly.
Described system controlled by computer stress relaxometer is characterized in that this servo-drive system can control test process with displacement control mode or strain control mode as required.In process of the test, microsystem is gathered automatically, storage, Processing Test data, and computer screen will show trial curve in real time, detects the variation relation of residue test power and time and temperature and time.
Described calibration system comprises the parts such as reverse rack device, pressing plate 403 and hand-operated lifting supporting plate 404 that the whippletree 401 that connects combined rack and crossbeam 402 are formed; In the described calibration system, two whippletrees 401 are connected seat board 102 and are threaded with combined rack, and whippletree 401 is propped crossbeam 402, form reverse rack device, with hand-operated lifting supporting plate 404 pressing plate 403 is moved to the crossbeam central hole again, connect, just can demarcate load sensor with it.
As shown in Figure 2, describe its transmission loading system in detail.The position of reductor 202 can be regulated by the degree of tightness that connects the 206 pairs of synchronous cog belts of tightening plate on the seat board 102.Ball screw assembly, 204 is made up of nut and leading screw, cooperates with bearing seat 205, and bearing seat is fixed on and connects on the seat board 102.Left end is supported by a pair of radial ball bearing 207 in the bearing seat 205, and right-hand member supports 208 by another transverse bearing, and the supporting form of ball screw assembly, 204 is that an end is fixed, and an end moves about, and increases its rigidity.When loading, the thrust bearing 209 in the bearing seat bears nut loading force to the right in the ball screw assembly, 204, drives ball-screw to left.In the time of need loading sample, press " startup " button, servomotor 201 entrys into service immediately, by the driving wheel in the reductor 202 drive synchronous cog belt wheels 203, through Synchronous Belt Drives, drive engaged wheel rotation, it is fixing with leading screw left end set nut 211 by the spacer in the bearing seat 210, and is connected with nut key in the ball screw assembly, 204.Thereby drive the nut rotation, nut is subjected to axial constraint, with the leading screw engagement, leading screw with is connected 212 connections of seat board 102 feather keys, limit its rotation, realization leading screw axial translation.Leading screw promptly loads sample when left.The leading screw right-hand member connects near switch 213, when returning, during to assigned address, sends signal, motor stall to control circuit.
Calibration system as shown in Figure 3.Before testing, must to greatly/load sensor of little two ranges demarcates.Wide range sensor on Fig. 3 302 left end ball seat-jacket assemblies are unloaded.Pressing plate 403 is placed on the hand-operated lifting supporting plate 404, shakes handle, make supporting plate rise to the crossbeam central hole, pressing plate 403 is fixed on crossbeam 402 right flanks, proving ring is fixed on the pressing plate 403 with latch 406.When demarcating wide range sensor 302, as the direct starter motor 201 of Fig. 3, leading screw 204 until linking to each other with proving ring, is demarcated beginning to left.When demarcating little range sensors 301, the little range sensors 301 on Fig. 3 sensor stand 104 is unloaded, after wide range sensor left end is connected, repeat above-mentioned calibration process.
As shown in Figure 4, in the theory diagram of system controlled by computer servo-drive system, control, measuring system are made up of host computer and slave computer.Load amplifier in the measuring system, light sign indicating number device, servo-control signal are all sent by the load sensor on the testing machine, servomotor.It can realize data acquisition, demonstration and man-machine conversation.Slave computer can transmit controlled variable, data processing, curve plotting parameter etc.Slave computer adopts the bus mould plate technique, and host CPU adopts the 80C196 single-chip microcomputer, and it is that 16 single-chip microcomputers are mainly realized the digital PID servocontrol, and data acquisition receives order, to the host computer communications of control data.
By above disclosed technical scheme as can be known, the process of the test of the utility model system controlled by computer stress relaxometer is, at first select the fixed position according to the length of sample, short one on sample is fixed on the ball seat end of wide range sensor, the other end is fixed on the ball seat end of little range sensors, and one on long sample is fixed on the ball seat end of wide range sensor, and other end ball seat-jacket assembly fixing and on the tailstock support is connected.After treating that sample is fixing, starter motor, transmission by reductor-synchronizing jugged belt wheel, drive the nut rotation of ball screw assembly,, because nut is subjected to axial constraint, drive ballscrew shaft to moving to left by feather key, realize thus sample is loaded, reach 10% of primary stress until the load indicating value, the prestretching force of finishing sample loads.Formally loading procedure is, presses " startup " button, repeats to load the transmission process of initial stress, until the test power value of product standard regulation.The motor stall begins to protect and carries, and in this process, can test according to constant control mode of displacement or the constant control mode of strain, continues after 100 hours, and test finishes.
The effective range of the test power of testing machine of the present utility model requires in 4%～100% range ability, and the error of indication is in ± 1%; Can satisfy GB/T10120-1996 " metal stresses relaxation test method " standard-required.
Claims (1)
1, a kind of system controlled by computer stress relaxometer comprises combined rack, transmission loading system, system controlled by computer servo-drive system, calibration system; It is characterized in that:
A, described combined rack comprise by support (101) with by being connected the four upright thick stick load frame formations that seat board (102), upright thick stick (103), sensor stand (104), intermediate support (105) and tailstock support (106) are formed, this load frame is fixed on above the support;
B, described transmission loading system are made up of servomotor (201), reductor (202), synchronous cog belt wheels (203), ball screw assembly, (204), bearing seat (205); Servomotor wherein (201) is located in the support, and reductor (202) that is connected with this servomotor and the driving wheel in the synchronous cog belt wheels (203) are coupling, and forms the main driving machine structure; Form power transmission mechanism by the synchronous cog belt of coupling with taking turns by the ball screw assembly, that is fixed on the bearing seat support that is connected on the seat board-driven synchronous cog belt; This driven synchronizing jugged belt wheel connects drive ball screw assembly, (204) by key;
C, described system controlled by computer servo-drive system comprise journey load sensor (301), wide range load sensor (302) and motor (201) in a small amount, a small amount of journey load sensor (301) wherein is located on the sensor stand (104) that constitutes load frame, and described wide range load sensor (302) then is located at the left end of ball screw assembly, (204);
D, described calibration system are for being fixed on the reverse rack device on the four upright thick stick load frame by whippletree (401), it comprises one group of whippletree (401), crossbeam (402), pressing plate (403) and hand-operated lifting supporting plate (404), and oppositely the space between rack device and the combined rack is the demarcation space of large and small range load sensor (301), (302); Described two whippletrees (401) are threaded with the seat board (102) that is connected in the combined rack, whippletree is propped crossbeam (402), fixedly a plate (405) is propped hand-operated lifting supporting plate (404) below crossbeam, with supporting plate pressing plate (403) is risen to the crossbeam central hole, pressing plate (403) is fixed on the crossbeam with latch (406).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200605786U CN201203558Y (en) | 2008-06-03 | 2008-06-03 | Microcomputer control stress relaxation tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200605786U CN201203558Y (en) | 2008-06-03 | 2008-06-03 | Microcomputer control stress relaxation tester |
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| CN201203558Y true CN201203558Y (en) | 2009-03-04 |
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| CNU2008200605786U Expired - Lifetime CN201203558Y (en) | 2008-06-03 | 2008-06-03 | Microcomputer control stress relaxation tester |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515684A (en) * | 2014-12-12 | 2015-04-15 | 北京瑞赛长城航空测控技术有限公司 | In-situ calibrating device with loaded direct-current torque motor and loaded driving ball screw assembly |
| CN105486579A (en) * | 2015-12-22 | 2016-04-13 | 中冶建筑研究总院有限公司 | Detection device and detection method for measuring strain generated by sample |
| CN105865895A (en) * | 2016-03-23 | 2016-08-17 | 上海交通大学 | Automatic testing method and system for radial mechanical properties of cork base of draught-beer barrel |
| CN106370515A (en) * | 2016-10-20 | 2017-02-01 | 上海凯尔孚应力腐蚀试验设备有限公司 | Stress loading device with integrated control |
| CN109211709A (en) * | 2018-09-06 | 2019-01-15 | 上海华龙测试仪器有限公司 | A kind of anti-fall device for the calibration of means of constant strain-tensile test machine |
| CN110261218A (en) * | 2019-06-28 | 2019-09-20 | 华南理工大学 | A kind of experimental rig for testing rubber shock-absorbing product creep and stress relaxation |
-
2008
- 2008-06-03 CN CNU2008200605786U patent/CN201203558Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515684A (en) * | 2014-12-12 | 2015-04-15 | 北京瑞赛长城航空测控技术有限公司 | In-situ calibrating device with loaded direct-current torque motor and loaded driving ball screw assembly |
| CN104515684B (en) * | 2014-12-12 | 2017-05-10 | 北京瑞赛长城航空测控技术有限公司 | In-situ calibrating device with loaded direct-current torque motor and loaded driving ball screw assembly |
| CN105486579A (en) * | 2015-12-22 | 2016-04-13 | 中冶建筑研究总院有限公司 | Detection device and detection method for measuring strain generated by sample |
| CN105865895A (en) * | 2016-03-23 | 2016-08-17 | 上海交通大学 | Automatic testing method and system for radial mechanical properties of cork base of draught-beer barrel |
| CN105865895B (en) * | 2016-03-23 | 2018-06-12 | 上海交通大学 | Battled (canned) beer barrellled wine lance seat radial direction mechanical performance automatic test approach and system |
| CN106370515A (en) * | 2016-10-20 | 2017-02-01 | 上海凯尔孚应力腐蚀试验设备有限公司 | Stress loading device with integrated control |
| CN109211709A (en) * | 2018-09-06 | 2019-01-15 | 上海华龙测试仪器有限公司 | A kind of anti-fall device for the calibration of means of constant strain-tensile test machine |
| CN110261218A (en) * | 2019-06-28 | 2019-09-20 | 华南理工大学 | A kind of experimental rig for testing rubber shock-absorbing product creep and stress relaxation |
| CN110261218B (en) * | 2019-06-28 | 2024-07-09 | 华南理工大学 | Test device for testing creep and stress relaxation of rubber vibration reduction product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI HUALONG TEST INSTRUMENTS CORPORATION Free format text: FORMER NAME: HUALONG DETECTOR CO., LTD., SHANGHAI |
|
| CP03 | Change of name, title or address |
Address after: Chuansha Pudong New Area Town, Shanghai City Sichuan Road No. 389 201202 Patentee after: Shanghai Hualong Test Instruments Co., Ltd. Address before: 201202 Shanghai city Pudong New Area Sichuan Road No. 389 Patentee before: Hualong Detector Co., Ltd., Shanghai |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090304 |
|
| CX01 | Expiry of patent term |