CN104359773B - A kind of stretching for auto parts and components and reverse torsion machine - Google Patents
A kind of stretching for auto parts and components and reverse torsion machine Download PDFInfo
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- CN104359773B CN104359773B CN201410579173.3A CN201410579173A CN104359773B CN 104359773 B CN104359773 B CN 104359773B CN 201410579173 A CN201410579173 A CN 201410579173A CN 104359773 B CN104359773 B CN 104359773B
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Abstract
The present invention relates to a kind of stretching for auto parts and components and reverse torsion machine, this testing machine includes supporting platform, motor, test specimen, universal fixturing, column is installed, base, electric-control system, signal generating system, tension-torsion compound transducer and transmission gear shift system, described motor and transmission gear shift system are arranged on base, the input of described transmission gear shift system is fixing with the output shaft of motor to be connected, output is provided with tension-torsion compound transducer, described tension-torsion compound transducer is connected with electric-control system by circuit, described signal generating system by circuit successively with electric-control system, motor is connected.Compared with prior art, the present invention can conveniently realize tensile fatigue test and the torsional fatigue test of parts, highly shortened the cycle of fatigue test, and then the cycle for reducing automobile research provides basis.
Description
Technical field
The invention belongs to machining detection technique field, relate to a kind of fatigue tester, especially relate to one
Stretching and reverse torsion machine for auto parts and components.
Background technology
The durability of automobile is the important performance of automobile, and fatigue of automobile parts test is to improve vehicle durability
Important method.Fatigue tester is detection material, parts, the important instrument equipment of structural fatigue performance, is material
Material property is detected one of the most frequently used equipment by material industry and quality supervision department at different levels.But, current most of fatigues
Testing machine all by HYDRAULIC CONTROL SYSTEM, this testing machine is existed overall dimensions is big, structure is complicated, control is inadequate
The technological deficiency such as accurately, and hydraulic fatigue machine is relatively costly, to wanting of the requirement safeguarded and experimental enviroment
Ask also high.Major part fatigue tester can only realize single stretching or torsional fatigue test, it is difficult at same machine
Carry out multiple fatigue test on device, and can not realize entering the test specimen of different size and shape on same machine
Row test, the versatility of equipment is not enough.This brings adverse effect can to undoubtedly the detection work of auto parts and components.
At present, for the technological deficiency existing for traditional electric-liquid type fatigue test system, done some and changed
Enter.For example, the Chinese invention patent of Application No. 201410079784.1 discloses a kind of stretch bending and turns round Multi-axial Loading
Fatigue tester, this fatigue tester is mainly: the stepper motor A being located in frame is by leading screw and hollow draws
Stretch axle to be connected with chuck A side, test specimen tensile fatigue can be detected；Stepper motor B is connected with eccentric shaft, eccentric
Setting eccentric wheel, bent connecting rod and bending force application mechanism on axle, it can detect test specimen flexural fatigue；Also set on eccentric shaft
Another eccentric wheel and twisted connecting rod, its by connecting rod, transition connecting rod and reverse rocking bar be connected with hollow twist axle,
This hollow twist axle is connected with chuck B, can detect test specimen torsional fatigue.Although, this invention can complete to examination
Part material from the test stretching, bending, reverse single fatigue behaviour to multiaxis various combination load condition, but
Its existence is disadvantageous in that the versatility of its equipment is poor, may be only available for the examination of a certain shape or size
Part is tested.The Chinese utility model patent of Application No. 200920196457.9 discloses a kind of fatigue test
Machine, this patent use crank and rocker mechanism main output shaft is connected with final drive shaft, although can be prevented effectively from because of
Drive motor positive anti-switching frequently to cause the damage driving motor, but its structure connects complex, required
Parts more, may be only available for the torsional fatigue test of test specimen, and tensile fatigue test can not be carried out, it makes
Limited by property, and the accuracy of the stability in use of crank and rocker mechanism and testing inspection has much room for improvement.
Content of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide a kind of by changing tooth
The position of engagement of wheel, can conveniently realize torsional fatigue test and tensile fatigue test, it is achieved that the automobile of a tractor serves several purposes
The stretching of parts and reverse torsion machine.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of stretching for auto parts and components and reverse torsion machine, this testing machine include support platform, motor,
Test specimen, universal fixturing, installation column and base, described installation column and base are oppositely arranged respectively and are supporting platform
On arranged on left and right sides, this testing machine also include electric-control system, signal generating system, tension-torsion compound transducer and
Transmission gear shift system, described motor and transmission gear shift system are arranged on base, described transmission gear shift system
The output shaft of input and motor fixing be connected, output is provided with tension-torsion compound transducer, described universal clamp
Tool is a pair, is oppositely arranged respectively and is installing on column and tension-torsion compound transducer, and described test specimen is fixed on two
Between universal fixturing, described tension-torsion compound transducer is connected with electric-control system by circuit, described signal
Generation system is connected with electric-control system, motor successively by circuit.
Described support platform is provided with two sections of embedded T-bolt chutes, and T is passed through in the bottom of described installation column
Type bolt chute is slidably disposed on support platform.T-shaped design is to allow bolt enter chute easily,
The longer direction of chute keeps consistent with test specimen direction, and the cross section of chute is similarly T-shaped, in order to formed with bolt
Coordinate.
Described installation column includes upper plate, middle standing pillar and lower shoe, and described upper plate is arranged on middle vertical
The top of post, the bottom of middle standing pillar is arranged on T-bolt chute by lower shoe, described upper plate with
It is all arranged with 4 bolts hole on lower shoe, and be arranged on middle standing pillar by fixed block.
4 bolts hole on described lower shoe are divided into 2 rows, often arrange the position of bolt hole with T-shaped accordingly
The position of bolt chute matches, and the described bolt passing through bolt hole on lower shoe is plugged in T-bolt chute
In.
Described transmission gear shift system include the first power transmission shaft, second driving shaft, worm and gear group, rack-and-pinion group,
Travelling gear and main shaft, one end of the first described power transmission shaft is fixing with the output shaft of motor to be connected, and the other end passes through
Key is connected with the gear in rack-and-pinion group, and the described tooth bar in rack-and-pinion group is arranged on main shaft, described
Second driving shaft and the first power transmission shaft be arranged in parallel, and solid with the worm screw in travelling gear, worm and gear group successively
Fixed connection, the worm and wheel engagement in described worm and gear group, described worm gear is connected with main shaft by key.
Described signal generating system includes computer and function generator, and described electric-control system is electric controller, institute
The input of the function generator stated is connected with computer, and output is connected with electric controller, described electric controller
It is connected with motor, tension-torsion compound transducer successively by circuit, in the course of the work, can constantly refer to
Make signal.
Described electric-control system includes electric controller, the command signal that signal generating system generates can be converted to electricity and drive
Dynamic signal, and by making comparisons the signal that tension-torsion compound transducer returns with electric drive signal, use PID
Control principle, it is achieved accurately putting in place of various instruction action.
The described platform that supports uses 45 steel of nitrogencase hardening to be prepared from, and has both had preferable case hardness,
There is again suitable rigidity.
When carrying out repeated tension and compression test, the described gear in rack-and-pinion group, tooth bar are meshed, now, and tooth
Wheel is separated with travelling gear, and torque is transferred directly to the first power transmission shaft by described motor output shaft, this first biography
Rotation is become the translation of main shaft by the bonded rack-and-pinion group that transmits torque to, gear, tooth bar, is entered by moving axis
And tensile test specimen, regulation motor rotates backward, and the direction of motion of main shaft changes, and then compression specimens, completes
Repeated tension and compression test；
Gear when carrying out torsional fatigue test, in handsetting gear tooth bar group so that it is with described travelling gear phase
Engagement, now, gear, tooth bar in rack-and-pinion group are separated, and described travelling gear passes through second driving shaft
Torque is transferred to worm and gear group, and worm gear, worm screw change the direction rotating, and torque by bonded transmission
To main shaft, and then reverse test specimen, complete a torsional fatigue test.
When carrying out repeated tension and compression test, owing to the worm gear in worm and gear group and main shaft are by bonded, at main shaft
Front and back when translation, worm and gear group can't be driven to seesaw, both will not produce interference, so, snail
Worm and gear group can't affect being normally carried out of repeated tension and compression test.
When carrying out tension and compression or torsional fatigue test, first, fix support platform, and with universal fixturing, test specimen is pressed from both sides
Tightly, it is connected with tension-torsion compound transducer, transmission system successively, further according to the physical length of test specimen, left and right shifting
Installation column is adjusted to appropriate location, and fastening nut, can carry out follow-up test by dynamic installation column.
During work, loading spectrum that signal generating system applies as required, produce command signal；Electric-control system according to
Command signal produces electric drive signal, and by incoming for electric drive signal motor；Motor output shaft drives the first power transmission shaft
To test specimen imposed load, the tension and compression signal detecting or torsional signals are changed into by described tension-torsion compound transducer
The signal of telecommunication, and it is sent to electric-control system；Electric-control system based on PID principle, the signal of telecommunication is modified,
Amplify, to reach required movement, complete the tension and compression to test specimen or torsional fatigue test.
Compared with prior art, the invention have the characteristics that:
1) due to employing universal fixturing, and supporting, on platform, T-bolt chute is set so that installing column can move
Being arranged on support platform, this can realize carrying out tension and compression or torsion to the auto parts and components of difformity and size dynamicly
Fatigue test, has significant versatility；
2) owing to using the transmission system of particular design, under conditions of single input, by regulation transmission system
Different engagement system, it is possible to achieve stretching or the fatigue test to test specimen, effectively shortens the cycle of fatigue test,
And then the cycle for reducing automobile research provides basis；
3) owing to using signal generating system and electric-control system, it is possible to achieve the control that process of the test is loaded, make
Must test more accurate, plant bulk is less, effectively reduces experimentation cost.
Brief description
Fig. 1 is the structural representation of a kind of stretching for auto parts and components of the present invention and reverse torsion machine；
Fig. 2 is the transmission gear shift system of a kind of stretching for auto parts and components of the present invention and reverse torsion machine
Structural representation；
Fig. 3 is the workflow diagram of a kind of stretching for auto parts and components of the present invention and reverse torsion machine；
Description of symbols in figure:
1-support platform, 2-motor, 3-transmission gear shift system, 31-the first power transmission shaft, 32-second driving shaft,
33-travelling gear, 34-worm and gear group, 35-rack-and-pinion group, 36-main shaft, 4-universal fixturing, 5
-tension-torsion compound transducer, 6-T type bolt chute, 7-lower shoe, 8-upper plate, 9-fixed block, 10
-test specimen, 11-middle standing pillar, 12-base.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment:
As shown in Fig. 1～2, a kind of stretching for auto parts and components and reverse torsion machine, this testing machine includes
Support platform the 1st, motor the 2nd, test specimen the 10th, universal fixturing and the 4th, column and base 12 are installed, column and base 12 are installed
Being oppositely arranged respectively in the arranged on left and right sides supporting on platform 1, this testing machine also includes electric-control system, signal system
System, tension-torsion compound transducer 5 and transmission gear shift system 3, motor 2 and transmission gear shift system 3 are arranged at the end
On seat 12, the input of transmission gear shift system 3 is fixing with the output shaft of motor 2 to be connected, and output is provided with tension-torsion
Compound transducer 5, universal fixturing 4 is a pair, is oppositely arranged respectively and is installing column and tension-torsion combined type sensing
On device 5, test specimen 10 is fixed between two universal fixturings 4, tension-torsion compound transducer 5 by circuit with automatically controlled
System is connected, and signal generating system is connected with electric-control system, motor 2 successively by circuit.
Supporting platform 1 and being provided with two sections of embedded T-bolt chutes 6, the bottom installing column is sliding by T-bolt
Groove 6 is slidably disposed on support platform 1.T-shaped design is to allow bolt enter chute, chute easily
Longer direction keeps consistent with test specimen direction, and the cross section of chute is similarly T-shaped, in order to is formed with bolt and coordinates.
Installing column and including upper plate the 8th, middle standing pillar 11 and lower shoe 7, upper plate 8 is arranged on middle standing pillar
The top of 11, the bottom of middle standing pillar 11 is arranged on T-bolt chute 6 by lower shoe 7, upper plate 8
Be all arranged with 4 bolts hole on lower shoe 7, and be arranged on middle standing pillar 11 by fixed block 9.
4 bolts hole on lower shoe 7 are divided into 2 rows, often arrange the position of bolt hole and corresponding T-bolt
The position of chute 6 matches, and the bolt passing through bolt hole on lower shoe 7 is plugged in T-bolt chute 6.
Transmission gear shift system 3 includes the first power transmission shaft the 31st, second driving shaft the 32nd, worm and gear group the 34th, gear teeth
Bar group the 35th, travelling gear 33 and main shaft 36, one end of the first power transmission shaft 31 is fixing with the output shaft of motor 2 even
Connecing, the other end is connected with the gear in rack-and-pinion group 35 by key, and the tooth bar in rack-and-pinion group 35 is arranged
On main shaft 36, second driving shaft 32 be arranged in parallel with the first power transmission shaft 31, and successively with travelling gear the 33rd,
Worm screw in worm and gear group 34 is fixing to be connected, and the worm and wheel engagement in worm and gear group 34, worm gear passes through
Key is connected with main shaft 36.
Signal generating system includes computer and function generator, and electric-control system is electric controller, function generator defeated
Entering end to be connected with computer, output is connected with electric controller, and the 2nd, electric controller is drawn with motor successively by circuit
Turning round compound transducer 5 to be connected, in the course of the work, function generator can constantly occur command signal.
Electric-control system includes electric controller, and the command signal that signal generating system generates can be converted to electric drive letter
Number, and by making comparisons the signal that tension-torsion compound transducer 5 returns with electric drive signal, use PID control
Principle processed, it is achieved accurately putting in place of various instruction action.
The described platform 1 that supports uses 45 steel of nitrogencase hardening to be prepared from, and has both had preferable case hardness,
There is again suitable rigidity.
When carrying out repeated tension and compression test, gear, tooth bar in rack-and-pinion group 35 are meshed, now, and gear
Being separated with travelling gear 33, torque is transferred directly to the first power transmission shaft 31 by motor 2 output shaft, this first biography
Rotation is become main shaft 36 by the bonded rack-and-pinion group 35 that transmits torque to, gear, tooth bar by moving axis 31
Translation, and then tensile test specimen 10, regulation motor 2 rotates backward, and the direction of motion of main shaft 36 changes,
And then compression specimens 10, complete a repeated tension and compression test；
Gear when carrying out torsional fatigue test, in handsetting gear tooth bar group 35 so that it is with travelling gear 33
Being meshed, now, gear, tooth bar in rack-and-pinion group 35 are separated, and travelling gear 33 passes through the second transmission
32 torques of axle are transferred to worm and gear group 34, and worm gear, worm screw change the direction rotating, and key is passed through in torque
Connect and be delivered to main shaft 36, and then reverse test specimen 10, complete a torsional fatigue test.
When carrying out repeated tension and compression test, owing to the worm gear in worm and gear group 34 passes through bonded with main shaft 36,
Before and after main shaft 36 when translation, worm and gear group 34 can't be driven to seesaw, both will not produce dry
Relate to, so, worm and gear group 34 can't affect being normally carried out of repeated tension and compression test.
When carrying out tension and compression or torsional fatigue test, first, fix support platform 1, and will try with universal fixturing 4
Part 10 clamps, and is connected with tension-torsion compound transducer the 5th, transmission gear shift system 3 successively, further according to test specimen 10
Physical length, left and right mobile installation column, installation column is adjusted to appropriate location, and fastening nut,
Carry out follow-up test.
As it is shown on figure 3, during work, the loading spectrum that signal generating system applies as required, produce command signal；
Electric-control system produces electric drive signal according to command signal, and by incoming for electric drive signal motor 2；Motor 2 exports
Axle drives the tension and compression letter that test specimen 10 imposed load, tension-torsion compound transducer 5 will be detected by the first power transmission shaft 31
Number or torsional signals change into the signal of telecommunication, and be sent to electric-control system；Electric-control system based on PID principle,
The signal of telecommunication is modified, amplifies, to reach required movement, complete the tension and compression to test specimen 10 or torsional fatigue examination
Test.
Claims (7)
1. for the stretching of auto parts and components and a reverse torsion machine, this testing machine include supporting platform (1),
Motor (2), test specimen (10), universal fixturing (4), column and base (12) are installed, described installation column with
Base (12) is oppositely arranged in the arranged on left and right sides supporting on platform (1) respectively, it is characterised in that this testing machine
Also include electric-control system, signal generating system, tension-torsion compound transducer (5) and transmission gear shift system (3),
Described motor (2) and transmission gear shift system (3) are arranged on base (12), described transmission gear shift system
The input of system (3) is fixing with the output shaft of motor (2) to be connected, and output is provided with tension-torsion compound transducer (5),
Described universal fixturing (4) is a pair, is oppositely arranged respectively and is installing column and tension-torsion compound transducer (5)
On, described test specimen (10) is fixed between two universal fixturings (4), described tension-torsion compound transducer (5)
Be connected with electric-control system by circuit, described signal generating system by circuit successively with electric-control system, motor
(2) it is connected；
Wherein, described transmission gear shift system (3) include the first power transmission shaft (31), second driving shaft (32),
Worm and gear group (34), rack-and-pinion group (35), travelling gear (33) and main shaft (36), described first
One end of power transmission shaft (31) is fixing with the output shaft of motor (2) to be connected, and the other end is by key and rack-and-pinion group
(35) gear in is connected, and the described tooth bar in rack-and-pinion group (35) is arranged on main shaft (36),
Described second driving shaft (32) and the first power transmission shaft (31) be arranged in parallel, and successively with travelling gear (33),
Worm screw in worm and gear group (34) is fixing to be connected, and the described worm and wheel in worm and gear group (34) is nibbled
Closing, described worm gear is connected with main shaft (36) by key.
2. a kind of stretching for auto parts and components according to claim 1 and reverse torsion machine, its
Being characterised by, described support platform (1) is provided with two sections of embedded T-bolt chutes (6), described installation
The bottom of column is slidably disposed in support platform (1) by T-bolt chute (6).
3. a kind of stretching for auto parts and components according to claim 1 and 2 and reverse torsion machine,
It is characterized in that, described installation column includes upper plate (8), middle standing pillar (11) and lower shoe (7), institute
The upper plate (8) stated is arranged on the top of middle standing pillar (11), and the bottom of middle standing pillar (11) is by going to the bottom
Plate (7) is arranged on T-bolt chute (6), and described upper plate (8) is all right with on lower shoe (7)
Claim to be provided with 4 bolts hole, and be arranged on middle standing pillar (11) by fixed block (9).
4. a kind of stretching for auto parts and components according to claim 3 and reverse torsion machine, its
Being characterised by, described 4 bolts hole on lower shoe (7) are divided into 2 rows, often arrange the position of bolt hole
Matching with the position of corresponding T-bolt chute (6), the described bolt on lower shoe (7) passes through bolt
Hole is plugged in T-bolt chute (6).
5. a kind of stretching for auto parts and components according to claim 1 and reverse torsion machine, its
Being characterised by, described signal generating system includes computer and function generator, and described electric-control system is automatically controlled
Device, the input of described function generator is connected with computer, and output is connected with electric controller, described
Electric controller is connected with motor (2), tension-torsion compound transducer (5) successively by circuit.
6. a kind of stretching for auto parts and components according to claim 1 and reverse torsion machine, its
Being characterised by, described support platform (1) uses 45 steel of nitrogencase hardening to be prepared from.
7. a kind of stretching for auto parts and components according to claim 1 and reverse torsion machine, its
It is characterised by,
When carrying out repeated tension and compression test, the described gear in rack-and-pinion group (35), tooth bar are meshed, this
When, gear and travelling gear (33) be separated, and torque is transferred directly to the by described motor (2) output shaft
One power transmission shaft (31), this first power transmission shaft (31) transmits torque to rack-and-pinion group (35) by bonded,
Rotation is become the translation of main shaft (36), and then tensile test specimen (10) by gear, tooth bar, and regulation motor (2) is anti-
To rotation, the direction of motion of main shaft (36) changes, and then compression specimens (10), completes tension and compression tired
Labor is tested；
Gear when carrying out torsional fatigue test, in handsetting gear tooth bar group (35) so that it is with described transmission
Gear (33) is meshed, and now, gear, tooth bar in rack-and-pinion group (35) are separated, described transmission
Gear (33) is transferred to worm and gear group (34) by second driving shaft (32) torque, and worm gear, worm screw change
Become the direction rotating, and torque by the bonded main shaft (36) that is delivered to, and then reverse test specimen (10), complete
Torsional fatigue test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410579173.3A CN104359773B (en) | 2014-10-24 | 2014-10-24 | A kind of stretching for auto parts and components and reverse torsion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410579173.3A CN104359773B (en) | 2014-10-24 | 2014-10-24 | A kind of stretching for auto parts and components and reverse torsion machine |
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| CN104359773A CN104359773A (en) | 2015-02-18 |
| CN104359773B true CN104359773B (en) | 2016-11-09 |
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