CN109596347A - A kind of testing stand for multi-wire saw slicer home roll all-round property testing - Google Patents
A kind of testing stand for multi-wire saw slicer home roll all-round property testing Download PDFInfo
- Publication number
- CN109596347A CN109596347A CN201910103619.8A CN201910103619A CN109596347A CN 109596347 A CN109596347 A CN 109596347A CN 201910103619 A CN201910103619 A CN 201910103619A CN 109596347 A CN109596347 A CN 109596347A
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- home roll
- shaft
- roll
- driving shaft
- testing stand
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- 238000012360 testing method Methods 0.000 title claims abstract description 73
- 238000004088 simulation Methods 0.000 claims abstract description 16
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 27
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 230000001133 acceleration Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
Abstract
The present invention relates to a kind of testing stands for multi-wire saw slicer home roll all-round property testing, including home roll and simulation gauze tension loading device, the multi-wire cutting machine home roll and simulation gauze tension loading device are installed on testing stand pedestal, there are two main shaft mounting base and motor mounts for installation on the testing stand pedestal, and driving shaft and driven shaft are installed respectively in described two main shaft mounting bases, the home roll is between driving shaft and driven shaft, home roll is fixedly clamped by driving shaft and driven shaft, the simulation gauze tension loading device includes radial loaded driving device and loaded roll, the loaded roll and home roll are arranged in parallel, and the two can mutual extrusion rotation, home roll device for detecting performance is installed on the testing stand, the home roll device for detecting performance is connected by information acquisition module with controlling terminal, the testing stand The zero load of combined reaction home roll and practical gauze can be simulated to home roll tension operating condition behavior in service.
Description
Technical field
The invention belongs to crystal silicon cutting equipment technical fields, relate in particular to a kind of for multi-wire saw slicer home roll
The testing stand of all-round property testing.
Background technique
Multi-wire saw equipment, especially slicer, home roll failure are always to perplex slicer to higher speed, bigger processing
The key technical problem of efficiency development.Existing slicer home roll in big useful load, run at high speed in expose a large amount of failure
Problem can no longer meet the use demand of user.And slicer home roll is due to its structure and its in slicer machine system
The features such as applying working condition of position and slicer, so that the technical issues of test of home roll cannot achieve as one.
The purpose of the invention be provided for slicer home roll remodeling one can the zero load of concentrated expression home roll and practical gauze to master
The test platform of roller tension operating condition behavior in service improves slicer home roll to provide directly helping.
Summary of the invention
For various deficiencies of the prior art, now provide one kind can the zero load of concentrated expression home roll and simulating cut gauze it is negative
The test platform of behavior in service under load state.
To achieve the above object, the invention provides the following technical scheme:
A kind of testing stand for multi-wire saw slicer home roll all-round property testing, including home roll and simulation gauze tension
Loading device, the simulation gauze tension loading device are located at the side of home roll, the home roll and simulation gauze tension load dress
It sets and is installed on testing stand pedestal, motor mount and in pairs existing main shaft mounting base are installed on the testing stand pedestal,
And driving shaft and driven shaft are installed respectively, and the driving shaft and driven shaft are located along the same line in the main shaft mounting base,
One end of the driving shaft is connected with motor output end, and the home roll is between driving shaft and driven shaft and passes through pull rod and institute
It states driving shaft and driven shaft is fixedly clamped；
The simulation gauze tension loading device includes radial loaded driving device and loaded roll, the loaded roll and home roll
Be arranged in parallel, and the loaded roll and home roll can mutual extrusion rotate, be also equipped with home roll device for detecting performance, institute on testing stand
Home roll device for detecting performance is stated to be connected with controlling terminal.
Further, it is tightly connected in advance between the both ends and driving shaft and driven shaft of the home roll by pull rod, utilizes driving shaft
Home roll is driven to rotate with conical surface friction-driven inside home roll with the conical surface of driven shaft and home roll abutting end, the pull rod is successively
Through driven shaft and home roll, one end is fixedly connected with driven shaft, and the other end is located in driving shaft and rubs with driving shaft and connects
It connects.
Further, the bottom surface of the testing stand pedestal and ground are connected, and the ground is vibration-proof foundation.
Further, it is connected between the driving shaft and motor output end by shaft coupling.
Further, the two sides of the main shaft mounting base are equipped with through-hole, and the top installation of the driving shaft and driven shaft is useful
In the briquetting for compressing driving shaft and driven shaft, the briquetting is matched by fixing bolt with through-hole.
Further, the main shaft mounting base uses shaft sleeve installation seat or V-arrangement briquetting mounting base, the shaft sleeve installation seat and master
The end face of roller contact is arc-shaped, and the diameter of the circular arc is identical as the diameter of the home roll, the V-arrangement briquetting mounting base and master
The end face of roller contact is V-shaped.
Further, the briquetting is arc-shaped using round briquetting or V-arrangement briquetting, the longitudinal section of the circle briquetting,
It being matched with the shaft sleeve installation seat, the longitudinal section of the V-arrangement briquetting is V-shaped, it is matched with the V-arrangement briquetting mounting base,
Round or v-shaped opening two sides are equipped with fixing seat, and the fixing seat and briquetting are integrally formed, and offer in the fixing seat solid
Determine hole, the fixing bolt extends through fixation hole and through-hole with rigid drive shaft and driven shaft.
Further, the home roll device for detecting performance includes vibration acceleration sensor, temperature sensor and displacement sensing
Device, multiple bearings are arranged on the driving shaft and driven shaft, and the temperature sensor and displacement sensor are each attached to described
On bearing, it is mounted on vibration acceleration sensor on the driving shaft, driven shaft and home roll, realizes the proximal end to home roll tapered end
The detection of the proximally and distally vertical displacement of the detection and home roll tapered end that are displaced with the radial level of distal end.
Further, pressure sensor is equipped between the radial loaded driving device and loaded roll.
Further, further include cooling system, the cooling system includes cooling device and pump station of cooling, the driving shaft and
Be mounted on cooling device on driven shaft and home roll, and the side of testing stand is equipped with pump station of cooling, the cooling device with
The pump station of cooling is connected, for effectively being cooled down to driving shaft and driven shaft and bearing.
The beneficial effects of the present invention are:
1, simulation gauze tension band load test is realized, closer to actual condition.
2, the arrangement of home roll and driven shaft, motor drive mode, home roll structure are all actually similar to slicer, may be implemented
Band home roll Operation Conditions are tested.
3, more data relevant to home roll functioning condition can be obtained, more home roll performance indicators are reacted.
4, more multidata acquisition and record are realized, is conducive to carry out Comprehensive Assessment to measurand.
5, identical as actual condition using shaft coupling transmission, test result more meets actual condition.
6, cooling is provided for driving shaft and driven shaft in load test.
7, the positive and negative rotation control of motor can more meet actual condition.
8, the setting of vibrating isolation foundation advantageously reduces extraneous vibration interference, guarantees that detection data is more accurate.
Detailed description of the invention
Fig. 1 is module diagram of the invention；
Fig. 2 is the module diagram of home roll and loaded roll interaction；
Fig. 3 is the schematic diagram of pull rod Yu driving shaft, driven shaft and home roll.
In attached drawing: 1- home roll, 101- pull rod, 102- nut, 2- simulation gauze loading device, 201- loaded roll, 3- test
Platform pedestal, 301- ground, 4- main shaft mounting base, 5- motor mount, 6- driving shaft, 7- driven shaft, 8- motor, 9- shaft coupling,
10- controlling terminal, 11- home roll device for detecting performance, 12- pump station of cooling.
Specific embodiment
It is right below with reference to attached drawing of the invention in order to make those skilled in the art more fully understand technical solution of the present invention
Technical solution of the present invention carries out clear, complete description, and based on the embodiment in the application, those of ordinary skill in the art exist
Other similar embodiments obtained under the premise of creative work are not made, shall fall within the protection scope of the present application.
In addition, the direction word mentioned in following embodiment, such as "upper" "lower" " left side " " right side " etc. are only the directions with reference to attached drawing, because
This, the direction word used is for illustrative and not limiting the invention.
The invention will be further described with preferred embodiment with reference to the accompanying drawing.
As shown in Figure 1-3, a kind of testing stand for multi-wire saw slicer home roll all-round property testing, including home roll 1
With simulation gauze loading device 2, the home roll 1 and simulation gauze loading device 2 are mounted on testing stand pedestal 3, the examination
The lower surface and ground 301 for testing platform pedestal 3 are connected, preferably, the ground 301 uses shock insulation ground, can effectively subtract
Interference of the small vibration to testing stand.The simulation gauze loading device 2 is located at the side of home roll 1, pacifies on the testing stand pedestal 3
Equipped with pairs of existing main shaft mounting base 4, and it is separately installed with driving shaft 6 and driven shaft 7 in the main shaft mounting base 4, it is described
Driving shaft 6 is located along the same line with driven shaft 7, meanwhile, multiple bearings are arranged on the driving shaft 6 and driven shaft 7, it is described
Bearing is connected by bearing mounting base and testing stand pedestal 3.
Motor mount 5 is fixedly arranged on close to the side of the driving shaft 6, and is equipped with motor on the motor mount 5
8, one end of the driving shaft 6 is connect with the output end of motor 8.The home roll 1 is between driving shaft 6 and driven shaft 7, and master
Be tightly connected in advance between roller 1 and the driving shaft 6 and driven shaft 7 by pull rod 101, the pull rod 101 sequentially pass through driven shaft 7,
Home roll 1, one end are fixedly connected with driven shaft 7 by nut 102, and the other end is located in driving shaft 6 and rubs with driving shaft 6
Connection, using the conical surface and 1 inside conical surface friction-driven of home roll of driving shaft 6 and driven shaft 7 and 1 abutting end of home roll, to drive
Home roll 1 rotates.Preferably, connecting between the driving shaft 6 and motor 8 by shaft coupling 9, practical work can be more nearly
Condition.
Cooling system is additionally provided on the testing stand, the cooling system includes cooling device and pump station of cooling 12, institute
Cooling device is stated to be mounted on driving shaft 6, driven shaft 7 and home roll 1, meanwhile, the cooling device be located at testing stand it is another
The pump station of cooling 12 of side is connected, and is effectively cooled down to home roll 1, driving shaft 6, driven shaft 7 and bearing.The home roll 1
Center and home roll 1 housing at cooling device at the center of home roll 1 and the housing of home roll 1 carry out timely and effectively
Cooling reduces influence of the temperature to 1 performance of home roll to the greatest extent, improves the accuracy of testing stand detection data.
The two sides of the main shaft mounting base 4 are equipped with through-hole, meanwhile, the top installation of the driving shaft 6 and driven shaft 7 is useful
In the briquetting for compressing driving shaft 6 and driven shaft 7.The main shaft mounting base 4 uses shaft sleeve installation seat or V-arrangement briquetting mounting base, institute
It states the end face that shaft sleeve installation seat is contacted with home roll 1 to be arc-shaped, and the diameter of the circular arc is identical as the diameter of the home roll 1,
The end face that the V-arrangement briquetting mounting base is contacted with home roll 1 is V-shaped.
The briquetting is using round briquetting or V-arrangement briquetting, and the longitudinal section of the circle briquetting is arc-shaped, with the axis
Set mounting base matches, and the longitudinal section of the V-arrangement briquetting is V-shaped, matches with the V-arrangement briquetting mounting base, round or V-arrangement
The two sides of opening are equipped with fixing seat, and the fixing seat and briquetting are integrally formed, meanwhile, fixation is offered in the fixing seat
Hole, fixing bolt extend through fixation hole and through-hole with rigid drive shaft 6 and driven shaft 7.
The simulation gauze loading device 2 includes radial loaded driving device and loaded roll 201, and the loaded roll 201 exists
It is rotated under the action of the radial loaded driving device, meanwhile, it is equipped between the radial loaded driving device and loaded roll 201
Pressure sensor, the loaded roll 201 is arranged in parallel with home roll 1, and can mutually squeeze between the loaded roll 201 and home roll 1
Pressure rotation, the pressure sensor are used to timely feedback the pressure change between loaded roll 201 and home roll 1.The radial loaded
Driving device can use hydraulic cylinder, pneumatic cylinder or motor driven lead screw, preferably, radial loaded described in the present embodiment fills
It is set to hydraulic cylinder.
Home roll device for detecting performance 11 is also equipped on the testing stand, the home roll device for detecting performance 11 passes through information
Acquisition module is connect with controlling terminal 10, with the detection data of real-time display testing stand.The home roll device for detecting performance 11 wraps
Temperature sensor, displacement sensor and vibration acceleration sensor are included, multiple temperature sensors and multiple displacement sensors are solid
It is scheduled on bearing, preferably, 4 bearings are respectively arranged on the driving shaft 6 and driven shaft 7, is respectively mounted one on the bearing
Temperature sensor, meanwhile, temperature sensor is also provided on the testing stand pedestal 3 for detecting indoor environment temperature；The master
3 displacement sensors are respectively installed, institute's displacement sensors are located at the driving shaft 6 and driven shaft 7 on moving axis 6 and driven shaft 7
On two bearings of front end and rearmost end and on 7 tapered end end face of driving shaft 6 and driven shaft, realize to the close of 1 tapered end of home roll
The detection of the vertical displacement proximally and distally for 1 tapered end of detection and home roll that the radial level of end and distal end is displaced；The master
Vibration acceleration sensor is mounted in the smooth surface of moving axis 6, driven shaft 7 and home roll 1.
Embodiment one:
A kind of testing stand for multi-wire saw slicer home roll all-round property testing is for studying home roll perseverance Rotation Process
Temperature Distribution, the radial and axial thermal deformation of home roll and bearing housing vibration when middle gauze is to home roll tension, home roll perseverance revolving speed heat
Balance assessment, the assessment of variable speed thermal balance.
Home roll 1 is installed between driving shaft 6 and driven shaft 7, is respectively arranged 1 on the bearing of the driving shaft 6 and driven shaft 7
A temperature sensor installs a temperature sensor on testing stand pedestal 3；Displacement sensor is arranged 6, to detect driving shaft
6 conical surface radial levels and radial vertical and 6 tapered end end face of driving shaft displacement, it is radial with the same manner detection 7 conical surface of driven shaft
Horizontal and radial vertical and 7 tapered end end face of driven shaft displacement；Vibration acceleration sensor sets 4, and the vibration acceleration passes
Sensor is arranged 4, is located on the front and back bearings position of driving shaft 6 and the front and back bearings position of driven shaft 7.
Permanent revolving speed heat balance test: driving shaft 6 and driven shaft 7 are tested respectively.By taking driving shaft 6 as an example: with actively
The 20% of 6 maximum speed of axis is as test revolving speed, at interval of 10 minutes record temperature and displacement, until driving shaft 6 reaches heat and puts down
Weighing apparatus state.Again respectively using 40%, 60%, 80% and the 100% of 6 maximum speed of driving shaft as test revolving speed, record is supervised respectively
Data are controlled, until driving shaft 6 reaches thermal equilibrium state.Driven shaft 7 is tested with same method again.
Embodiment two:
Variable speed heat balance test
The structure division being the same as example 1 in this test repeats no more, and difference is: with 1 maximum speed of home roll
20% as test revolving speed, at interval of record temperature, acceleration and displacement in 5 minutes, at interval of turn of 30 minutes transformation home rolls 1
Speed, and gradually to 40%, 60%, 80% and 100% conversion of maximum speed, and be spaced 5 minutes in each revolving speed, record temperature
Degree, acceleration and displacement.
Embodiment three:
Simulate working condition experimenting
Operating condition, the revolving speed of the motor 8 of adjustment driving multi-line cutting machine, loaded roll 201 are actually used according to multi-line cutting machine
Revolving speed, pressure sensor display data, at interval of record temperature, acceleration and displacement in 5 minutes or 10 minutes.
The above has been described in detail, described above, is only a preferred embodiment of the present invention, when cannot
It limit the scope of implementation of the present invention, i.e., it is all according to the made equivalent changes and modifications of the application range, it should still belong to covering scope of the present invention
It is interior.
Claims (10)
1. a kind of testing stand for multi-wire saw slicer home roll all-round property testing, it is characterised in that: including home roll and mould
Quasi- gauze tension loading device, the simulation gauze tension loading device are located at the side of home roll, the home roll and simulation gauze
Tension loading device is installed on testing stand pedestal, and motor mount and in pairs existing master are equipped on the testing stand pedestal
Axis mounting base, and driving shaft and driven shaft are installed respectively, and the driving shaft and driven shaft are located at together in the main shaft mounting base
On one straight line, one end of the driving shaft is connected with motor output end, and the home roll is between driving shaft and driven shaft and leads to
Pull rod is crossed to be fixedly clamped with the driving shaft and driven shaft；
The simulation gauze tension loading device includes radial loaded driving device and loaded roll, and the loaded roll is parallel with home roll
Setting, and the loaded roll and home roll can mutual extrusion rotate, be also equipped with home roll device for detecting performance, the master on testing stand
Roller device for detecting performance is connected with controlling terminal.
2. a kind of testing stand for multi-wire saw slicer home roll all-round property testing according to claim 1, special
Sign is: being tightly connected between the both ends and driving shaft and driven shaft of the home roll by pull rod in advance, utilizes driving shaft and driven shaft
Home roll is driven to rotate with conical surface friction-driven inside home roll with the conical surface of home roll abutting end, the pull rod sequentially passes through driven
Axis and home roll, one end are fixedly connected with driven shaft, the other end be located in driving shaft and with driving shaft frictional connection.
3. a kind of testing stand for multi-wire saw slicer home roll all-round property testing according to claim 1, special
Sign is: the bottom surface and ground of the testing stand pedestal are connected, and the ground is vibration-proof foundation.
4. a kind of testing stand for multi-wire saw slicer home roll all-round property testing according to claim 3, special
Sign is: being connected between the driving shaft and motor output end by shaft coupling.
5. a kind of testing stand for multi-wire saw slicer home roll all-round property testing according to claim 4, special
Sign is: the two sides of the main shaft mounting base are equipped with through-hole, are equipped with above the driving shaft and driven shaft for compressing master
The briquetting of moving axis and driven shaft, the briquetting are matched by fixing bolt with through-hole.
6. a kind of testing stand for multi-wire saw slicer home roll all-round property testing according to claim 5, special
Sign is: the main shaft mounting base uses shaft sleeve installation seat or V-arrangement briquetting mounting base, what the shaft sleeve installation seat was contacted with home roll
End face is arc-shaped, and the diameter of the circular arc is identical as the diameter of the home roll, what the V-arrangement briquetting mounting base was contacted with home roll
End face is V-shaped.
7. a kind of testing stand for multi-wire saw slicer home roll all-round property testing according to claim 6, special
Sign is: the briquetting is using round briquetting or V-arrangement briquetting, and the longitudinal section of the circle briquetting is arc-shaped, with the axis
Set mounting base matches, and the longitudinal section of the V-arrangement briquetting is V-shaped, matches with the V-arrangement briquetting mounting base, round or V-arrangement
The two sides of opening are equipped with fixing seat, and the fixing seat and briquetting are integrally formed, and offer fixation hole in the fixing seat, described
Fixing bolt extends through fixation hole and through-hole with rigid drive shaft and driven shaft.
8. a kind of testing stand for multi-wire saw slicer home roll all-round property testing according to claim 7, special
Sign is: the home roll device for detecting performance includes vibration acceleration sensor, temperature sensor and displacement sensor, the master
Multiple bearings are arranged on moving axis and driven shaft, the temperature sensor and displacement sensor are each attached on the bearing, institute
State and be mounted on vibration acceleration sensor on driving shaft, driven shaft and home roll, realize to home roll tapered end proximally and distally
The detection of the proximally and distally vertical displacement of the detection and home roll tapered end of radial level displacement.
9. a kind of testing stand for multi-wire saw slicer home roll all-round property testing according to claim 8, special
Sign is: pressure sensor is equipped between the radial loaded driving device and loaded roll.
10. -9 any a kind of test for multi-wire saw slicer home roll all-round property testing according to claim 1
Platform, it is characterised in that: further include cooling system, the cooling system includes cooling device and pump station of cooling, the driving shaft and
Cooling device is mounted on driven shaft, and the side of testing stand is equipped with pump station of cooling, the cooling device and the cooling
Pumping plant is connected, for effectively being cooled down to driving shaft and driven shaft and bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910103619.8A CN109596347A (en) | 2019-02-01 | 2019-02-01 | A kind of testing stand for multi-wire saw slicer home roll all-round property testing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910103619.8A CN109596347A (en) | 2019-02-01 | 2019-02-01 | A kind of testing stand for multi-wire saw slicer home roll all-round property testing |
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| CN109596347A true CN109596347A (en) | 2019-04-09 |
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| CN201910103619.8A Pending CN109596347A (en) | 2019-02-01 | 2019-02-01 | A kind of testing stand for multi-wire saw slicer home roll all-round property testing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112595509A (en) * | 2020-12-28 | 2021-04-02 | 江苏三一环境科技有限公司 | Performance test equipment for moving part of granulator |
| CN115343090A (en) * | 2022-08-24 | 2022-11-15 | 深圳技术大学 | Reliability detection device and method for roller for lithium battery technology |
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| 史尧臣;李跃光;李占国;李杰;李庆华;: "汽车传动带电封闭性能试验台设计", 制造业自动化, no. 04 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595509A (en) * | 2020-12-28 | 2021-04-02 | 江苏三一环境科技有限公司 | Performance test equipment for moving part of granulator |
| CN115343090A (en) * | 2022-08-24 | 2022-11-15 | 深圳技术大学 | Reliability detection device and method for roller for lithium battery technology |
| WO2024041166A1 (en) * | 2022-08-24 | 2024-02-29 | 深圳技术大学 | Reliability test apparatus and method for roller for lithium battery process |
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