CN107941630A - A kind of experimental rig and method of determination limit moment of torsion - Google Patents
A kind of experimental rig and method of determination limit moment of torsion Download PDFInfo
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- CN107941630A CN107941630A CN201711212197.5A CN201711212197A CN107941630A CN 107941630 A CN107941630 A CN 107941630A CN 201711212197 A CN201711212197 A CN 201711212197A CN 107941630 A CN107941630 A CN 107941630A
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- 238000000034 method Methods 0.000 title abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 143
- 230000013011 mating Effects 0.000 claims abstract description 23
- 238000002474 experimental method Methods 0.000 claims description 35
- 230000000670 limiting effect Effects 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0042—Force sensors associated with force applying means applying a torque
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of experimental rig and method of determination limit moment of torsion, belong to torsion tester technical field.The device includes test specimen axis, test specimen wheel, reverse plate, fixed disk；One end of test specimen axis is fixing end, and the other end is abutting end, and a mating surface is at least distributed with abutting end vertically, and mating surface forms at least level-one with the matching hole in the middle part of test specimen wheel and is interference fitted；The length of each mating surface in the axial direction is more than or equal to the length of matching hole in the axial direction；The side that reverse plate is relatively fixed disk is fixed with holder seat, and test specimen axis mounting hole is opened up in the middle part of holder seat；Test specimen wheel mounting hole is opened up in the middle part of fixed disk, the vertical section diameter of test specimen wheel mounting hole is more than the vertical section diameter of test specimen axis mounting hole.Test operation efficiency can be significantly improved using the structure.
Description
Technical field
The present invention relates to a kind of experimental rig, especially a kind of experimental rig of determination limit moment of torsion, also relates to phase
The test method answered, belongs to torsion test technical field.
Background technology
According to the applicant understood, existing torsion testing machine is horizontal type structure, and left and right is reverse plate respectively and is fixed on base
Fixed disk, reverse plate is connected with motor, fixed disk is fixed.In general, reverse plate and fixed disk are all circular flanges
The structure of disk, edge are covered with bolt hole, and two parts of test specimen to be measured are fixedly connected by bolt with testing machine.Spiral shell is first used during experiment
Bolt fixes reverse plate and fixed disk of the two parts of test specimen respectively with the left and right sides, then starts motor and applies torsion to sample
Square, observes test specimen state, so as to draw the ultimate torque of test specimen.However, using during this structure measurement multi-group data, it is necessary to anti-
Multiple assembling-disassembling bolt, repeatedly calibration positioning, heavy workload and testing efficiency is very low, it is necessary to assembly and disassembly particularly when moment of torsion is larger
Bolt is more, has more slowed down the process of test；Intensity decreases are bolted in addition, assembling and disassembling to be easy to cause repeatedly, test of many times
Connection bolt may be broken afterwards, and then trigger security incident.
In addition, in order to rationally design the fit tolerance of axis hole, usually need to determine the predetermined interference fit transmitted needed for moment of torsion,
The prior art needs to make the test specimen of different interference volumes, then tests its ultimate torque respectively, very inconvenient.
The content of the invention
The primary and foremost purpose of the present invention is：The problem of test specimen is complicated, time-consuming is fixed for torsion test, there is provided one kind can
The crane torsion test device of Fast Installation test specimen, so as to significantly improve test operation efficiency.
Further aim of the present invention is：Mistake needed for predetermined transmission moment of torsion can be obtained by providing a kind of once mounting experiment
Be full of cooperation determination limit moment of torsion test method so that experiment more efficient quick.
In order to reach above primary and foremost purpose, basic technical scheme of the invention is：A kind of experiment dress of determination limit moment of torsion
Put, include the test piece fixing device of clamping test specimen to be measured, the test specimen to be measured includes coaxial mounted test specimen axis (3) and test specimen wheel
(4), there is a matching hole (4-1) that can coordinate torsion pass with the mating surface on test specimen axis in the middle part of the test specimen wheel；The test specimen
Fixing device includes the reverse plate (1) for installing test specimen axis and is fixed on the fixed disk (2) that test specimen wheel is fixedly mounted on base,
It is characterized in that：
The both ends of the test specimen axis (3) are respectively to insert end (3-2) and abutting end (3-3), and the abutting end (3-3) is along axis
To one section of mating surface (3-1) being at least distributed with the matching hole (4-1) formation torsion pass cooperation；
The side that the reverse plate (1) is relatively fixed disk (2) is to insert end (3-2) with centre bore (5-1) and with described
Form the holder seat (5) of circumferential constraint prismatic pair；
Mounting hole (the 2- with the constraint of the test specimen wheel (4) circumferential direction, one end axial limiting is formed with the middle part of the fixed disk (2)
1)。
Experimental rig using determination limit moment of torsion of the present invention is being carried out band moment of torsion display experiment electric motor and reverse plate biography
After the preparation of dynamic connection, carry out as follows：
Circumferentially constrained Step 1: the inserting end of test specimen axis to be tested is inserted into the centre bore of reverse plate holder seat, will
Test specimen wheel is inserted into the mounting hole in the middle part of fixed disk circumferentially constraint and axial limiting；
Step 2: coordinate torsion pass in the matching hole of one section of mating surface Specimen wheel of test specimen axis abutting end, is formed；
Step 3: opening experiment electric motor progressively applies moment of torsion, when experiment electric motor rotating speed breaks through zero, i.e. test specimen axis and test specimen wheel
When starting to produce relative rotation, the critical output torque of experiment electric motor is recorded；Test specimen axis is obtained with the current torsion pass of test specimen wheel to coordinate
The ultimate torque that can be transmitted.
During experiment, since test specimen axis and test specimen wheel can be inserted into reverse plate and fixed disk respectively, installation is very
It is convenient, when reverse plate on demand it is axially displaced coordinate test specimen axis and test specimen wheel after, the experiment electric motor driving torsion that show with moment of torsion
Disk drives test specimen axis to produce rotating tendency, when it Relative sliding occurs with test specimen wheel, that is, obtains transferable ultimate torque, and ten
It is convenient to divide.
It should be noted that above-mentioned torsion pass, which coordinates, has broad sense：Both include the interference fit of the margin of tolerance, and also include engagement
Coordinate.
In order to reach further purpose, in of the invention：The abutting end (3-3) is at least distributed with vertically matches somebody with somebody with described
Close hole (4-1) and form two sections of mating surfaces (3-1) being gradually tightly interference fitted.In this way, when being tested by the following method, you can
The predetermined interference fit result of the test transmitted needed for moment of torsion is obtained, the test method of the determination limit moment of torsion is being carried out band moment of torsion
After showing the preparation that experiment electric motor is sequentially connected with reverse plate, carry out as follows：
Circumferentially constrained Step 1: the inserting end of test specimen axis to be tested is inserted into the centre bore of reverse plate holder seat, will
Test specimen wheel is inserted into the mounting hole in the middle part of fixed disk circumferentially constraint and axial limiting；
Step 2: by the matching hole of the first segment mating surface Specimen wheel of test specimen axis abutting end, first order mistake is formed
It is full of cooperation；
Step 3: opening experiment electric motor progressively applies moment of torsion, when experiment electric motor rotating speed breaks through zero, i.e. test specimen axis and test specimen wheel
When starting to produce relative rotation, the critical output torque of experiment electric motor is recorded；
Step 4: make a reservation for transmit moment of torsion as experiment electric motor output torque is less than, by next section of cooperation of test specimen axis abutting end
In the matching hole of face Specimen wheel, next stage interference fit, return to step three are formed；Otherwise determine that level interference fit is closed
With end experiment.
The present invention can once be carried out continuously test of many times to test specimen assembling, until preset torque can be transmitted by determining
Interference volume is shared, significantly improves test efficiency, and advantageously ensures that the accuracy of measurement result.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the experimental rig structure diagram of embodiment one；
Fig. 2 is E-E profiles in Fig. 1；
Fig. 3 is the holder holder structure schematic diagram of embodiment one；
Fig. 4 is F-F profiles in Fig. 3；
Fig. 5 is the fixed disk structure diagram of embodiment one；
Fig. 6 is G-G profiles in Fig. 5；
Fig. 7 is the test specimen structure diagram of embodiment one；
Fig. 8 is H-H profiles in Fig. 7；
Fig. 9 is the experimental rig structure diagram of embodiment two；
Figure 10 is K-K profiles in Fig. 9；
Figure 11 is the test specimen structure diagram of embodiment two；
Figure 12 is I-I profiles in Figure 11；
Figure 13 is determination step flow chart.
In figure：1 reverse plate；2 fixed disks；2-1 mounting holes；2-2 location holes；3 test specimen axis；3-1 mating surfaces；3-2 inserts end；
3-3 abutting ends；3-4 spline surfaces；3-5 positioning cams；4 test specimen wheels；4-1 matching holes；5 holder seats；5-1 centre bores；5-2 is spacing
Hole.
Embodiment
For a better understanding of the present invention, the embodiment of the present invention is described in detail below.
Embodiment one
The experimental rig of the present embodiment can delivery threshold moment of torsion for measure interference fit test specimen to be measured.Such as Fig. 1 to Fig. 8
Shown, test specimen to be measured includes coaxial mounted test specimen axis 3 and test specimen wheel 4.The wherein middle part of test specimen wheel 4 can be with test specimen axis with one
Mating surface on 3 coordinates the matching hole 4-1 of torsion pass, and gabarit has rectangular section section and cylindrical cross-section section.The both ends of test specimen axis 3 point
Not Wei rectangular section inserting end 3-2 and cylinder abutting end 3-3, abutting end 3-3 is axially distributed to be had and matching hole 4-1 shapes
Into be gradually tightly interference fitted three sections of mating surface 3-1 (such as every section increase 0.005 millimeter；When one section of only specific fit dimension
During mating surface, it is possible to achieve Fast Installation test specimen measures the ultimate torque of the fit dimension).Insert end 3-2 and abutting end 3-3
Separated by middle part positioning cam 3-5.
The test piece fixing device of clamping test specimen to be measured includes the reverse plate 1 for installing test specimen axis 3 and is fixed on base
The fixed disk 2 of test specimen wheel 4 is fixedly mounted.Reverse plate 1 has the experiment electric motor shown with moment of torsion driving and can be axially displaced on demand, its
The side for being relatively fixed disk 2 is connected with centre bore 5-1 and forms circumferential constraint prismatic pair by rectangular opening and inserting end 3-2
Holder seat 5.The middle part of fixed disk 2 is formed with the rectangular section mounting hole 2-1 and and cylinder circumferentially constrained with 4 rectangular section of test specimen wheel section
The axial limiting undergauge circular locating openings 2-2 that section matches.
When the abutting end of test specimen axis only has one section of mating surface, only needs to be measured and a certain coordinates the transferable limit to reverse
When, after the preparation that will be sequentially connected with moment of torsion display experiment electric motor with reverse plate is carried out, tried by following easy steps
Test：
Step 1: the rectangular section of test specimen axis 3 to be tested inserting end 3-2 is inserted into during reverse plate holder seat 5 is adapted to
Circumferentially constrained in the 5-1 of heart hole, the rectangular section section of test specimen wheel 4 is inserted into the mounting hole 2-1 in the middle part of fixed disk and is circumferentially constrained
And pass through undergauge circular locating openings 2-2 axial limitings；
Step 2: match somebody with somebody interference in the matching hole 4-1 of the mating surface 3-3 Specimens wheel 4 of 3 abutting end of test specimen axis, is formed
Close；
Step 3: opening experiment electric motor progressively applies moment of torsion, when experiment electric motor rotating speed breaks through zero, i.e. test specimen axis 3 and test specimen
When wheel 4 starts to produce relative rotation, the critical output torque of experiment electric motor is recorded, test specimen axis 3 is obtained and matches somebody with somebody with the 4 current interference of test specimen wheel
Close the ultimate torque that can be transmitted.
When needing to measure the interference fit needed for predetermined transmission moment of torsion, show experiment electric motor with turning round band moment of torsion carrying out
After the preparation that turntable is sequentially connected, carry out as follows (referring to Figure 13)：
Step 1: the rectangular section of test specimen axis 3 to be tested inserting end 3-2 is inserted into during reverse plate holder seat 5 is adapted to
Circumferentially constrained in the 5-1 of heart hole, the rectangular section section of test specimen wheel 4 is inserted into the mounting hole 2-1 in the middle part of fixed disk and is circumferentially constrained
And pass through undergauge circular locating openings 2-2 axial limitings；
Step 2: by the matching hole 4-1 of the first segment mating surface Specimen wheel 4 of 3 abutting end of test specimen axis, first is formed
Level interference fit；
Step 3: opening experiment electric motor progressively applies moment of torsion, when experiment electric motor rotating speed breaks through zero, i.e. test specimen axis and test specimen wheel
When starting to produce relative rotation, the critical output torque of experiment electric motor is recorded；
Step 4: make a reservation for transmit moment of torsion as experiment electric motor output torque is less than, by next section of cooperation of 3 abutting end of test specimen axis
In the matching hole 4-1 of face Specimen wheel 4, next stage interference fit, return to step three are formed；Otherwise level interference fit is determined
Share, terminate experiment.
It was verified that compared with prior art, the crane torsion test device of the present embodiment has following notable beneficial effect：
1) test specimens axis mounting hole is respectively formed test specimen wheel test specimen axis, test specimen wheel mounting hole rotationally constrained in circumferential direction, makes
Test specimen axis, test specimen wheel can not rotate in the circumferential, so as to quickly be fixed to test specimen；Fixed compared to bolt disassembly, it is bright
It is aobvious to simplify operating process, significantly improve test efficiency；
2) multistage mating surface can form multistage interference fit with matching hole on test specimens axis, so that once mounting can be surveyed
Determine the desired excess use level needed for preset torque, to design when determines preferable standard of tolerance or the optimal nonstandard public affairs of setting
Difference；
3) diameter of test specimens wheel mounting hole is more than the diameter of test specimen axis mounting hole so that test specimen can be fixed from test specimen wheel
The side insertion in hole, in unhinderedly reverse extraction after the test, is installed more fast and convenient；
4) test specimens axis relies on the circumferential direction of itself, position limiting structure to automatically form after being inserted into experimental rig from side with test specimen wheel
Positioning, eliminates manual calibration；
5) mark line is equipped between each section of mating surface of, easy to the propulsion of forcing press.
Embodiment two
For the experimental rig of the present embodiment as shown in Fig. 9 to Figure 13, basic technical scheme is identical with embodiment, and difference exists
It is spline surface 3-4 in the mating surface of test specimen axis 3, the matching hole 4-1 of test specimen wheel 4 is splined hole；Spline engagement is formed between the two
Coordinate.The middle part of test specimen axis 3 has the positioning cam 3-5 of footpath convex, plays the role of positioning in axial direction.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
Into technical solution, all fall within the protection domain of application claims.
Claims (8)
1. a kind of experimental rig of determination limit moment of torsion, includes the test piece fixing device of clamping test specimen to be measured, the test specimen to be measured
, can be with the mating surface on test specimen axis with one in the middle part of the test specimen wheel including coaxial mounted test specimen axis (3) and test specimen wheel (4)
Coordinate the matching hole (4-1) of torsion pass；The test piece fixing device includes the reverse plate (1) for installing test specimen axis and is fixed on bottom
The fixed disk (2) of test specimen wheel is fixedly mounted on seat, it is characterised in that：
The both ends of the test specimen axis (3) are respectively to insert end (3-2) and abutting end (3-3), and the abutting end (3-3) is vertically extremely
One section of mating surface (3-1) that interference fit is formed with the matching hole (4-1) is distributed with less；
The side that the reverse plate (1) is relatively fixed disk (2) is to be formed with centre bore (5-1) and with inserting end (3-2)
The holder seat (5) of circumferential constraint prismatic pair；
The mounting hole (2-1) with the constraint of the test specimen wheel (4) circumferential direction, one end axial limiting is formed with the middle part of the fixed disk (2).
2. the experimental rig of determination limit moment of torsion according to claim 1, it is characterised in that：The abutting end (3-3) is along axis
To being at least distributed with two sections of mating surfaces (3-1) being gradually tightly interference fitted are formed with the matching hole (4-1).
3. the experimental rig of determination limit moment of torsion according to claim 2, it is characterised in that：The both ends difference of the test specimen axis
For the inserting end of rectangular section and the abutting end of cylinder.
4. the experimental rig of determination limit moment of torsion according to claim 3, it is characterised in that：The inserting end and abutting end quilt
Middle part positioning cam section separates.
5. the experimental rig of determination limit moment of torsion according to claim 4, it is characterised in that：The gabarit of the test specimen wheel has
Rectangular section section and cylindrical cross-section section.
6. the experimental rig of determination limit moment of torsion according to claim 5, it is characterised in that：Be formed with the middle part of the fixed disk with
The rectangular section mounting hole and the axial limiting undergauge circle to match with cylindrical cross-section section that test specimen wheel rectangular section section circumferentially constrains
Location hole.
7. the test method of the experimental rig using determination limit moment of torsion described in claim 1, is being carried out band moment of torsion display examination
After the preparation that electricity-testing machine is sequentially connected with reverse plate, carry out as follows：
Circumferentially constrained Step 1: the inserting end of test specimen axis to be tested is inserted into the centre bore of reverse plate holder seat, by test specimen
Wheel is inserted into the mounting hole in the middle part of fixed disk circumferentially constraint and axial limiting；
Step 2: by the matching hole of one section of mating surface Specimen wheel of test specimen axis abutting end, interference fit is formed；
Step 3: opening experiment electric motor progressively applies moment of torsion, when experiment electric motor rotating speed zero, i.e. test specimen axis of breakthrough and test specimen wheel start
When producing relative rotation, the critical output torque of experiment electric motor is recorded；Obtain test specimen axis and be currently interference fitted institute's energy with test specimen wheel
The ultimate torque of transmission.
8. the test method of the experimental rig using any determination limit moment of torsion of claim 2 to 6, is being carried out band moment of torsion
After showing the preparation that experiment electric motor is sequentially connected with reverse plate, carry out as follows：
Circumferentially constrained Step 1: the inserting end of test specimen axis to be tested is inserted into the centre bore of reverse plate holder seat, by test specimen
Wheel is inserted into the mounting hole in the middle part of fixed disk circumferentially constraint and axial limiting；
Step 2: match somebody with somebody first order interference in the matching hole of the first segment mating surface Specimen wheel of test specimen axis abutting end, is formed
Close；
Step 3: opening experiment electric motor progressively applies moment of torsion, when experiment electric motor rotating speed zero, i.e. test specimen axis of breakthrough and test specimen wheel start
When producing relative rotation, the critical output torque of experiment electric motor is recorded；
Step 4: making a reservation for transmit moment of torsion as experiment electric motor output torque is less than, coordinate face pressure by next section of test specimen axis abutting end
In the matching hole for entering test specimen wheel, next stage interference fit, return to step three are formed；Otherwise determine that this grade shares, and ties
Beam is tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711212197.5A CN107941630B (en) | 2017-11-28 | 2017-11-28 | Test device and method for measuring limit torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711212197.5A CN107941630B (en) | 2017-11-28 | 2017-11-28 | Test device and method for measuring limit torque |
Publications (2)
| Publication Number | Publication Date |
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| CN107941630A true CN107941630A (en) | 2018-04-20 |
| CN107941630B CN107941630B (en) | 2024-03-29 |
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| CN201711212197.5A Active CN107941630B (en) | 2017-11-28 | 2017-11-28 | Test device and method for measuring limit torque |
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