CN101354299A - Bolt torque test stand - Google Patents

Bolt torque test stand Download PDF

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Publication number
CN101354299A
CN101354299A CNA2008101417168A CN200810141716A CN101354299A CN 101354299 A CN101354299 A CN 101354299A CN A2008101417168 A CNA2008101417168 A CN A2008101417168A CN 200810141716 A CN200810141716 A CN 200810141716A CN 101354299 A CN101354299 A CN 101354299A
Authority
CN
China
Prior art keywords
bolt
measuring
test
power
measured
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
CNA2008101417168A
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Chinese (zh)
Inventor
李张银
孙小宝
吴贵根
李创
肖勇
赵成旺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chery Automobile Co Ltd
Original Assignee
Chery Automobile Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chery Automobile Co Ltd filed Critical Chery Automobile Co Ltd
Priority to CNA2008101417168A priority Critical patent/CN101354299A/en
Publication of CN101354299A publication Critical patent/CN101354299A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a bolt torque test bed which comprises a power system, a torque measuring system, an axial force measuring system and a rack. The power system comprises a motor, a speed reducer axially connected with the motor and a clamping chuck used for tightening one end of a bolt to be measured. The torque measuring system comprises a torque sensor arranged on the speed reducer. The axial force measuring system comprises an axial force sensor which is arranged on the bolt to be measured. The rack comprises a base and a test plate fixed at the other end of the bolt to be measured. The power system and the test plate are connected and fixed on the base. The bolt torque test bed is characterized by being provided with a control system connected with the power system, the torque measuring system and the axial force measuring system. The axial force measuring system also comprises an ultrasound length measuring system comprising an ultrasonic wave controller and an ultrasonic wave probe which is connected with the ultrasonic wave controller and arranged on the bolt to be measured. The test bed of the invention is provided with the control system and the ultrasound length measuring system, thereby increasing automation degree and being capable of obtaining measurement results in real time; the control system carries out the whole-course monitoring of a tightening process, displays a T-Theta curve and very conveniently measures a yielding point and breaking limit in a tightened state.

Description

A kind of bolt torque test stand
Technical field
The present invention relates to a kind of bolt torque test stand.
Background technology
At present the test event of securing member generally comprises: tensile strength, yield strength (stretching), hardness, chemical analysis, breakdown torque, metallographic examination, coating are corrosion-resistant etc.These test events are mainly from the related content in the GB/T3098 series standard, and measure not means preferably for the surrender of the securing member under the tight condition, pretightning force etc.
Under tight condition, test moment of torsion, generally also just rest on the manual test stage, its program is: bolt or screw test specimen are inserted in the test fixture, have two button complete threads at least, should reserve the length of a diameter of screw simultaneously between anchor clamps and bolt or the head of screw at least, clamp then; Continuously, steadily apply moment of torsion.Testing equipment is generally just one a dial torque wrench and a clamp system (bench vice).Hand dipping is capable of a lot of limitation: measure continuity relatively poor, be difficult to realize steadily and at the uniform velocity applying moment of torsion, be difficult to guarantee that force application mechanism is vertical with the anchor clamps plane, apply the range limited system of torque, and because of adopting the dial torque wrench reading, so data can not realize continuous acquisition, can't draw torsion curve, therefore also just can't or be difficult to measure tighten surrender, the precision of measurement is also relatively low.
Chinese patent CN03228797.6 discloses a kind of high-strength nut torque coefficient testing machine, and it comprises nut axle power meter, power and instrument measuring torsional vibration, frame, adopts the electric tightening nut, measure moment of torsion with torque sensor, only need one man operation, reduced labour intensity, improved measuring accuracy.But this system is accurate inadequately for the axle force measurement, and the result of measurement need arrive in the laboratory and handle, and just can reach a conclusion, and can not in time provide measurement result.
Prior art need be improved and be perfect.
Summary of the invention
The technical problem to be solved in the present invention is to remedy above-mentioned the deficiencies in the prior art, and a kind of nut torque test stand is provided, and it can not only the high precision continuous coverage also can obtain measurement result in real time, and control operation is convenient.
Technical matters of the present invention is solved by the following technical programs:
A kind of bolt torque test stand comprises power system, torch measuring system, axle force measuring system and frame.Described power system comprises motor and speed reduction unit that is coupling with it and the chuck that nut one end to be measured is tightened.Described torch measuring system comprises the torque sensor that is arranged on the described reducer output shaft.Described axle force measuring system comprises the axial force sensor that is arranged on the nut to be measured.Described frame comprises the test panel of the base and the fixing nut other end to be measured.Described power system and test panel are fastened on the described base.It is characterized in that: the control system that links to each other with described power system, torch measuring system, axle force measuring system also is set.Described axle force measuring system also comprises ultrasonic length measurement system; Described ultrasonic length measurement system comprises ultrasonic wave controller and is attached thereto the ultrasonic probe that is arranged on the nut to be measured.
Technical matters of the present invention is further solved by following technical scheme:
Above-mentioned bolt torque test stand, described axial force sensor comprise the washer type axial force sensor and are arranged on the hardened steel packing ring of its both sides.
Above-mentioned bolt torque test stand, described power system also comprises the detent that is arranged on described motor tail end.
Above-mentioned bolt torque test stand, described frame also comprises electric machine support, reducer stent and frame guide rail, described reducer output shaft, axial force sensor are positioned on the axis of nut to be measured.
Above-mentioned bolt torque test stand, described control system comprises the PLC module.
Above-mentioned bolt torque test stand, described motor is an AC servo motor.
Above-mentioned bolt torque test stand also comprises the output display system that links to each other with described control system.
Above-mentioned bolt torque test stand, described output display system comprises touching display screen.
Above-mentioned bolt torque test stand also comprises rack, and described frame is arranged on the described rack.
The present invention's beneficial effect compared with prior art is: bolt torque test stand of the present invention is owing to be equipped with control system, improved automaticity, control system can realize data storing and processing, and can carry out programmed control, stop or keeping until reaching target torque or corner, rundown process is carried out complete monitoring, show T-θ curve, can measure tight condition lower yield point and break limit very easily simultaneously.This machine adopts electric tightening bolt, nut, can accurately measure moment of torsion, axle power and corner with torque sensor, gasket type axial force sensor and servo-drive system corner feedback.In-local is simple, and is powerful, only needs a people can finish all operations, and labour intensity is low and precision is high, has overcome the error that human factor causes.
Description of drawings
Fig. 1 is an organigram of the present invention;
Fig. 2 is the structural representation of axle force measuring system of the present invention;
Fig. 3 is the vertical view of base of the present invention;
Fig. 4 is the A-A cut-open view of Fig. 3;
Fig. 5 is the front view of reducer stent of the present invention;
Fig. 6 is the front view of test suite of the present invention;
Fig. 7 is the front view of test panel fagging of the present invention;
Fig. 8 is the front view of test panel base of the present invention.
Embodiment
Also in conjunction with the accompanying drawings the present invention is described in further detail below by concrete embodiment.
As shown in Figure 1, bolt torque test stand of the present invention comprises power system 10, torch measuring system 20, axle force measuring system 30, control system 40, output display system 50, frame 60 and rack 80.Power system 10, axle force measuring system 30 are installed on the frame 60, and frame 60 is arranged on the rack 80.Control system 40 links to each other with power system 10, torch measuring system 20, axle force measuring system 30 and output display system 50, and torch measuring system 20 is arranged on the reducer output shaft of power system 10.
Power system 10 comprises detent 11, motor 12, speed reduction unit 13.Detent 11 is installed in the tail end of motor 12, and speed reduction unit 13 is connected with the output shaft of motor 12 by rotating shaft joint, and during connection, fastening shaft joint fishbolt reaches the 72N.m moment of torsion.Fastening fishbolt divides fastening gradually several times, whenever tightly once, rotate several circles, this connection have the transmission efficiency height, steadily, characteristics such as noise is low.In the present embodiment, motor 12 adopts AC servo motor, can adopt the 120MB200B-001300 model particularly, and power is that 2KW, nominal torque are that 9.55N.m, rated speed are the AC servo motor of 2000rpm.
Torch measuring system 20 comprises torque sensor 21 and the tappet head 22 that is installed on speed reduction unit 13 output shafts, tappet head 22 can be tightened operation to the M5-M16 bolt and nut, in the present embodiment, the supply voltage of torque sensor 21 is 24V, output signal 4-20mV, and model is AKC-205.
As shown in Figure 1 and Figure 2, axle force measuring system 30 comprises axial force sensor 31, ultrasonic probe 32, ultrasonic wave controller 33.Ultrasonic probe 32 is arranged on the bolt 70 to be measured, and ultrasonic wave controller 33 links to each other with ultrasonic probe 32, and it is the high-frequency ultrasonic probe of 6mm or 12mm that ultrasonic probe can be selected diameter for use.Axial force sensor 31 is socketed on the bolt, comprise gasket type axial force sensor and hardened steel packing ring 34,34 ', be specifically designed to and measure the securing member axial pre tightening force, two hardened steel packing rings 34,34 ' respectively are installed in the both sides of gasket type axial force sensor, make rotation effect or on-the-spot load reduce to minimum, guarantee its precision to greatest extent, in the present embodiment, the model of axial force sensor is MODEL4000.
Control system 40 adopts PLC module (being the programmable logic controller) control, possess outside the functions such as data transfer, comparison, data operation, redirect, circulation, subroutine call, network communication, also the value of moving the Premium Features of big-and-middle-sized PLC, as the PID (please translate english abbreviation) that has SP (please translate english abbreviation) tilt function controls, avoids producing the soft start of peak value, can also finish simultaneously closed-loop control to analog quantitys such as temperature, pressure, flows, and can by with output being used of display system 50, form the man-machine interface of standard.
Output display system 50 comprises high-resolution touch display screen.
As shown in Figure 1, described frame 60 comprises base 61, test panel 62, electric machine support 63 and reducer stent 64.As shown in Figure 3, Figure 4, base 61 is provided with frame guide rail 65, and this guide rail is the T-shape guide rail.The frame guide rail 65 of present embodiment has 5, is used for the fixing of equipment and adjusts position between each parts.Solid 45 steel plates of frame guide rail 65 usefulness process, and are of a size of 1500mm * 400mm * 38mm (length * wide * height), can increase equipment self-weight, to guarantee the equipment mounting stability.Test panel 62, electric machine support 63 and reducer stent 64 are arranged on the frame guide rail 65.Electric machine support 63 and reducer stent 64 are respectively applied for support motor 12 and speed reduction unit 13.As shown in Figure 5, reducer stent 64 adopts the 40Cr steel plate to process, steel plate thickness is 20mm, guarantee that reducer stent 64 has enough rigidity, reducer stent 64 adopts the T-shape structures, and the centre has and holds the speed reduction unit axis hole 641 that speed reduction unit 13 output shafts pass through and the bolt hole 642 of 4 connection reducers, with the bolt of four M10 * 1.25 speed reduction unit 13 is connected with reducer stent 64, speed reduction unit 13 is propped, and is fixed on the frame guide rail 65 by T-shape bolt, nut again.
Shown in Fig. 1,6,7,8, test panel 62 comprises test panel base 621, test panel fagging 622 and test suite 623.Test panel base 621 vertically connects test panel fagging 622 by adjustment hole 626 bolts, and test panel fagging 622 is by the parallel connection test suite 623 of adjustment hole 627 bolts.Test panel base 621 is installed on the frame guide rail 65, and is free to slide on guide rail by bearing 625, guarantees free feeding in tightening test process; Rectangular counterbore is adopted in left and right adjusting hole 626, so just can guarantee to adjust about the test panel fagging 622 that connects is realized., test panel fagging 622 is fixed on the test panel base 621 by tommyhead bolt, has on the test panel fagging 622 and adjusts hole 627 up and down, so just can guarantee parallel connected test suite 623 realizations adjustment up and down; Adjustment by test panel base 621, test panel fagging 622 and test suite 623 possesses well to neutrality the equipment of assurance.The test body 624 of all size is put into the cover (transition fit) of test suite 623, just can realize the location, tighten test.
Rack 80 adopts the high-strength corrosion-resisting compound substance and makes, and good rigidly is attractive in appearance, in light weight.Rack 80 is mainly used in frames 60 and deposits control system 40 and electric elements.
Principle of work of the present invention is: at first bolt 70 to be measured is installed on the test body 624, puts into test suite 623, with tappet head 22 and bolt 70 clampings to be measured.Start-up control system 40, control system 40 drive motor 12 drive tappet head 22 by speed reduction unit 13 bolt 70 to be measured are progressively tightened.Torque sensor 21 converts the strain that torsional moment produces to the voltage signal linear with it according to the resistance-strain principle, by control system 40 voltage signal is converted to digital signal, through handling, by output display system 50 output torque values.AC servo motor 12 adopts the control of full cut-off number of rings words, and corner can be accurately measured in high dynamic response and position feedback is provided.The gasket type axial force sensor is miniature measuring sensor, is specifically designed to measure fastener shaft power, sends the axle power of measuring to control system 40.Ultrasonic controller 34 sends a voltage signal to high-frequency ultrasonic probe 32, sensor sends a ultrasonic shortwave pulse signal (several cycle) along the bolt transmission, the reflection of chance distal face, the feedback echoed signal is given ultrasonic probe 32, can accurately measure ultrasonic " travel-time " like this, be that pulse signal is in the inner required turnaround time of bolt, in case when bolt is tightened, have two reasons that the travel-time is increased to some extent: 1, all stretchings of bolt when tightening, so distance increases; 2, other increase of bolt stress level can cause ultrasonic average spreading rate in inside to descend to some extent.The variation of two factors all with bolt inner shaft power relation in direct ratio.Control system 40 adopts the PLC module controls, the data that receive handled, and the motion of may command motor 12, realizing close loop maneuver, result and controlled variable can be sent to the output display system and show, for example T-θ curve.
Design torque of the present invention is 300N.m, and full test speed 60rpm can analyze the bolt and nut of each specification of M5-M16.Main measurement parameter comprises breakdown torque, tightens surrender, corner (tightening angle), bolt elongate amount and according to axial pre tightening force, torque arithmetic torque coefficient, and this equipment can be realized three kinds of control modes: moment of torsion control, moment of torsion+corner control, corner are controlled.
Bolt torque test stand of the present invention adopts ultrasonic length measurement system, can obtain testing result in real time, makes measuring process efficient; The formed closed-loop control of control system can make whole measuring process increasingly automated, has reduced labour intensity, has improved work efficiency.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.

Claims (10)

1. a bolt torque test stand comprises power system (10), torch measuring system (20), axle force measuring system (30) and frame (60); Described power system (10) comprises motor (12) and speed reduction unit (13) that is coupling with it and the chuck (22) that nut (70) one ends to be measured are tightened; Described torch measuring system (20) comprises the torque sensor (21) that is arranged on described speed reduction unit (13) output shaft; Described axle force measuring system (30) comprises the axial force sensor (31) that is arranged on the nut to be measured (70); Described frame (60) comprises the test panel (62) of the base (61) and fixing nut to be measured (70) other end, and described power system (10) and test panel (62) are fastened on the described base (61); It is characterized in that: the control system (40) that links to each other with described power system (10), torch measuring system (20), axle force measuring system (30) also is set; Described axle force measuring system (30) also comprises ultrasonic length measurement system; Described ultrasonic length measurement system comprises ultrasonic wave controller (33) and is attached thereto the ultrasonic probe (32) that is arranged on the nut to be measured (70).
2. bolt torque test stand according to claim 1 is characterized in that: described axial force sensor (31) is the washer type axial force sensor, the hardened steel packing ring (34,34 ') that is provided with in its both sides.
3. bolt torque test stand according to claim 1 is characterized in that: described power system (10) also comprises the detent (11) that is arranged on described motor (12) tail end.
4. bolt torque test stand according to claim 1 is characterized in that: described frame (60) also comprises electric machine support (63), reducer stent (64) and frame guide rail (65); Described speed reduction unit (13) output shaft, axial force sensor (31) are positioned on the axis of nut to be measured (70).
5. according to the bolt torque test stand described in the claim 1, it is characterized in that: described control system (40) comprises the PLC module.
6. according to any one described bolt torque test stand among the claim 1-4, it is characterized in that: described motor (12) is an AC servo motor.
7. according to any one described bolt torque test stand among the claim 1-4, it is characterized in that: also comprise the output display system (50) that links to each other with described control system (40).
8. according to the bolt torque test stand described in the claim 7, it is characterized in that: described output display system (50) comprises touching display screen.
9. according to any one described bolt torque test stand among the claim 1-4, it is characterized in that: also comprise rack (80), described frame (60) is arranged on the described rack (80).
10. bolt torque test stand according to claim 1 is characterized in that: described test panel (62) comprises test panel base (621), test panel fagging (622) and test suite (623); Test panel base (621) vertically connects test panel fagging (622) by adjustment hole (626) bolt, and test panel fagging (622) is by adjustment hole (627) the parallel connection test suite of bolt (623).
CNA2008101417168A 2008-08-29 2008-08-29 Bolt torque test stand Pending CN101354299A (en)

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Application Number Priority Date Filing Date Title
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Cited By (31)

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CN101915665A (en) * 2010-07-09 2010-12-15 中国船舶重工集团公司第七一一研究所 Static property test bed for diesel engine power transmission elastic components
CN102032967A (en) * 2011-01-24 2011-04-27 吉林大学 Torque calibration test bed for loader transmission shaft
CN102095546A (en) * 2010-12-09 2011-06-15 浙江华电器材检测研究所 Shaft force and torque combined testing machine for fastening piece
CN102162780A (en) * 2010-12-20 2011-08-24 长春设备工艺研究所 Numerical control strong torsional measurement test stand of torsion shaft
CN102183418A (en) * 2011-03-02 2011-09-14 华中科技大学 Device for testing micro-torsion mechanical property of low-dimension material
CN102262021A (en) * 2010-05-28 2011-11-30 上海宝冶工程技术有限公司 Torque force testing device for large-sized bolt
CN102288353A (en) * 2011-07-21 2011-12-21 厦门新鸿洲精密科技有限公司 Torque force detecting method of lens fixing seat for camera of mobile phone
CN102323163A (en) * 2011-08-16 2012-01-18 浙江伟星新型建材股份有限公司 Pipe fitting tightening torque tester
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CN102589784A (en) * 2012-01-04 2012-07-18 中国航天标准化研究所 Testing device for relationship between pre-tightening force and torque for threaded fastening connection
CN102607750A (en) * 2012-04-13 2012-07-25 重庆大学 Test-bed for friction torque of rolling bearing
CN102620877A (en) * 2012-04-13 2012-08-01 东北电力科学研究院有限公司 Method for measuring bolt load by using fixed frequency of bolt
CN102620927A (en) * 2012-04-19 2012-08-01 山西潞安环保能源开发股份有限公司 Rotary power device of motor
CN102636397A (en) * 2012-04-19 2012-08-15 山西潞安环保能源开发股份有限公司 Device and method for rapidly testing comprehensive mechanical properties of anchor bolt
CN102980751A (en) * 2012-11-15 2013-03-20 昆山三多乐电子有限公司 Torque force test fixture suitable for adjusting screw bolt assembly
CN101929899B (en) * 2009-06-18 2013-06-05 鸿富锦精密工业(深圳)有限公司 Torque detection system and method
CN103149023A (en) * 2013-03-18 2013-06-12 深圳市瑞格尔仪器有限公司 Nut performance testing device and nut performance testing machine
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CN103822744A (en) * 2014-02-27 2014-05-28 河南科技大学 Device and method for measuring corn ear threshing force of bare hands
CN104634561A (en) * 2015-02-04 2015-05-20 苏州中太动力弹簧有限公司 Spring torsion testing machine
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CN101929899B (en) * 2009-06-18 2013-06-05 鸿富锦精密工业(深圳)有限公司 Torque detection system and method
CN102262021A (en) * 2010-05-28 2011-11-30 上海宝冶工程技术有限公司 Torque force testing device for large-sized bolt
CN102262021B (en) * 2010-05-28 2013-08-21 上海宝冶工程技术有限公司 Torque force testing device for large-sized bolt
CN101915665B (en) * 2010-07-09 2012-07-11 中国船舶重工集团公司第七一一研究所 Static property test bed for diesel engine power transmission elastic components
CN101915665A (en) * 2010-07-09 2010-12-15 中国船舶重工集团公司第七一一研究所 Static property test bed for diesel engine power transmission elastic components
CN102095546A (en) * 2010-12-09 2011-06-15 浙江华电器材检测研究所 Shaft force and torque combined testing machine for fastening piece
CN102162780B (en) * 2010-12-20 2013-03-20 长春设备工艺研究所 Numerical control strong torsional measurement test stand of torsion shaft
CN102162780A (en) * 2010-12-20 2011-08-24 长春设备工艺研究所 Numerical control strong torsional measurement test stand of torsion shaft
CN102032967B (en) * 2011-01-24 2011-11-09 吉林大学 Torque calibration test bed for loader transmission shaft
CN102032967A (en) * 2011-01-24 2011-04-27 吉林大学 Torque calibration test bed for loader transmission shaft
CN102183418B (en) * 2011-03-02 2012-09-05 华中科技大学 Device for testing micro-torsion mechanical property of low-dimension material
CN102183418A (en) * 2011-03-02 2011-09-14 华中科技大学 Device for testing micro-torsion mechanical property of low-dimension material
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CN102323163A (en) * 2011-08-16 2012-01-18 浙江伟星新型建材股份有限公司 Pipe fitting tightening torque tester
CN102554608B (en) * 2011-12-23 2016-03-02 江苏日盈电子股份有限公司 For assembling the automatic machine of the adjusting bolt of vehicle sprayer unit
CN102554608A (en) * 2011-12-23 2012-07-11 江苏日盈电器有限公司 Automata for assembling adjusting bolt of automobile spray device
CN102589784A (en) * 2012-01-04 2012-07-18 中国航天标准化研究所 Testing device for relationship between pre-tightening force and torque for threaded fastening connection
CN102620877A (en) * 2012-04-13 2012-08-01 东北电力科学研究院有限公司 Method for measuring bolt load by using fixed frequency of bolt
CN102607750A (en) * 2012-04-13 2012-07-25 重庆大学 Test-bed for friction torque of rolling bearing
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CN102980751A (en) * 2012-11-15 2013-03-20 昆山三多乐电子有限公司 Torque force test fixture suitable for adjusting screw bolt assembly
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CN103149023A (en) * 2013-03-18 2013-06-12 深圳市瑞格尔仪器有限公司 Nut performance testing device and nut performance testing machine
US9868227B2 (en) 2013-12-20 2018-01-16 Kobe Steel, Ltd. Thrust load measuring device for sealed mixing device and calibration method for same
CN103822744A (en) * 2014-02-27 2014-05-28 河南科技大学 Device and method for measuring corn ear threshing force of bare hands
CN103822744B (en) * 2014-02-27 2016-06-22 河南科技大学 The method measuring the naked hand threshing power size of corn ear
CN107003195A (en) * 2014-11-14 2017-08-01 Cs有限及两合公司 Brake testboard
CN104634561A (en) * 2015-02-04 2015-05-20 苏州中太动力弹簧有限公司 Spring torsion testing machine
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