CN111157387A - Roller type friction and wear testing machine and method - Google Patents
Roller type friction and wear testing machine and method Download PDFInfo
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- CN111157387A CN111157387A CN202010093452.4A CN202010093452A CN111157387A CN 111157387 A CN111157387 A CN 111157387A CN 202010093452 A CN202010093452 A CN 202010093452A CN 111157387 A CN111157387 A CN 111157387A
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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
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a roller type friction wear testing machine and a method, wherein the roller type friction wear testing machine comprises a driving module, a transmission module, a rolling module and a pressure measuring module, the driving module is connected with the transmission module, the transmission module is connected with the rolling module, the rolling module comprises a rack and a roller, the rack is connected with the transmission module, the roller is arranged on the rack, an object stage for mounting a balance weight is arranged on the rack, the pressure measuring module comprises a test bed arranged below the roller, a pressure sensor for measuring the pressure applied by the roller is arranged in the test bed, and a metal plate to be tested is arranged at the upper part of the test bed; the transmission module can drive the frame to reciprocate. According to the invention, through simulating the friction and wear conditions in the rolling process, the rolling friction coefficient under the conditions of large load and large deformation can be efficiently and accurately measured, and the influence of the friction environment on the performance and the relevant characteristics of the wear test under the condition of large plastic deformation of metal are studied more effectively, so that effective experimental equipment guarantee is provided.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to a roller type frictional wear testing machine and a method.
Background
With the rapid development of material science and engineering discipline in China, particularly the acceleration of research on plastic deformation and friction of metal materials, more and more frictional wear test machines with various shapes and colors appear in succession, but frictional wear test machines simulating roll pressure deformation under the condition of large load are rare, and the frictional wear test machines sold in the market in the prior art are researched and analyzed. The following conclusions can be drawn preliminarily by study and analysis:
(1) at present, more than 95% of the friction and wear testing machines on the market take a rotary friction pair as a research object.
(2) In a friction and wear testing machine taking rotation as a friction pair, most of the friction environment is simulated in a ball rolling mode.
(3) The friction and wear testing machine with the linear reciprocating friction pair as a research object at home and abroad is only limited to researches on aspects of high frequency, small load, micro stroke and the like, and the researches on the design and application of the linear reciprocating friction and wear testing machine with low frequency, large load and large stroke are few.
In order to provide effective experimental equipment guarantee for researching the measurement of the friction coefficient under the condition of large plastic deformation of metal, the influence of the friction environment on the performance and the relevant characteristics of a wear experiment, a large-load rolling type friction and wear experimental device is urgently needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a roller type friction and wear testing machine and a method, which can efficiently and accurately realize a rolling friction and wear test under the condition of large load and large deformation, and provide effective experimental equipment guarantee for researching the influence of a friction environment on the performance and relevant characteristics of the wear test under the condition of large plastic deformation of metal.
In order to achieve the purpose, the invention adopts the technical scheme that:
a roller type friction wear testing machine comprises a driving module, a transmission module, a rolling module and a pressure measuring module, wherein the driving module is connected with the transmission module, the transmission module is connected with the rolling module, the rolling module comprises a rack and a roller, the rack is connected with the transmission module, the roller is arranged on the rack, an object stage for mounting a balance weight is arranged on the rack, the pressure measuring module comprises a test bed arranged below the roller, a pressure sensor for measuring the pressure applied by the roller is arranged in the test bed, and a metal plate to be tested is arranged at the upper part of the test bed; the transmission module can drive the frame to reciprocate.
Preferably, the transmission module comprises a worm, a worm wheel and a crank slider mechanism, one end of the worm is connected with the power output end of the driving module, and the worm wheel is arranged above the worm and meshed with the worm; the crank sliding block mechanism takes a worm wheel shaft as a revolute pair, crank sliding block mechanisms are arranged on two sides of a worm wheel, and sliding blocks in the crank sliding block mechanisms on the two sides of the worm wheel are respectively arranged on fixed guide rails on the two sides; the two ends of the frame are respectively connected with the sliding blocks in the crank sliding block mechanisms at the two sides.
Preferably, a vertical positioning pin is arranged on the sliding block, a positioning hole matched with the positioning pin is formed in the end portion of the rack, the rack is connected with the sliding block through the positioning hole and the positioning pin, and the positioning hole and the positioning pin are in clearance fit.
Preferably, the driving module comprises a motor and a motor switch, the motor is connected with the motor switch, and an output shaft of the motor is connected with a power input end of the transmission module.
Preferably, the objective table is provided with a vertical rod, the balance weight is a weight, and the vertical rod is sleeved with the weight.
The invention discloses a roller type friction and wear experiment method, which is carried out through the roller type friction and wear experiment and comprises the following steps:
mounting a metal plate to be tested on the upper part of a test bed, and loading a balance weight on an objective table;
the driving module drives the rolling rack to horizontally reciprocate by utilizing the transmission module, the roller rolls on the surface of the metal plate to be tested to carry out a wear test, and the pressure sensor measures the pressure applied to the metal plate to be tested.
Compared with the prior art, the invention has the beneficial effects that:
the roller type friction and wear testing machine can drive the rack to reciprocate by utilizing the transmission module, the roller is arranged on the rack, the testing table is arranged below the roller, the upper part of the testing table is used for arranging a metal plate to be tested, and the roller can roll the metal plate to be tested arranged on the upper part of the testing table when in use. The principle of the invention is different from the existing linear reciprocating friction wear testing machine and rotary friction wear testing machine. A pressure sensor for measuring the pressure applied by the roller is arranged in the test bed, so that the positive pressure is acquired in the experimental process. Be equipped with the objective table that is used for installing the counter weight in the frame, can load the counter weight through the objective table to realize the experiment of heavy load roll-in frictional wear, provide the equipment guarantee for the experiment of the big deformation frictional wear of research metal.
The roller type friction and wear experiment method is carried out by using the experiment machine, so that the metal rolling processing process can be simulated more practically, the experiment result is more accurate and reliable, the process is simple, and the realization is easy.
Drawings
FIG. 1 is a schematic perspective view of a roller type frictional wear testing machine according to the present invention.
Fig. 2 is a schematic front structural view of a driving module according to the present invention.
Fig. 3 is a schematic front view of the transmission module of the present invention.
Fig. 4 is a schematic view of the worm gear of the invention.
Fig. 5 is a schematic view of a slider-crank mechanism according to the present invention.
Fig. 6 is a schematic view of one side of the guide rail slider mechanism of the present invention.
Fig. 7 is a top view of the transmission module, the rolling module and the load cell module of the present invention.
Fig. 8 is a schematic view of the rolling module structure of the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
With the rapid development of material science and engineering discipline in China, particularly the acceleration of the research of metal materials in the aspects of plastic deformation and friction, in order to provide effective experimental equipment guarantee for researching the measurement of friction coefficient under the condition of large plastic deformation of metal, the influence of friction environment on performance and relevant characteristics of abrasion experiments, the reciprocating type frictional abrasion tester simulating roller pressure deformation under the condition of large load is very feasible and has wide market prospect. Based on this, the general scheme of the design of the invention is as follows:
referring to fig. 1, 7 and 8, the roller type friction wear testing machine of the present invention comprises a driving module, a transmission module, a rolling module and a pressure measuring module, wherein the driving module is connected with the transmission module, the transmission module is connected with the rolling module, the rolling module comprises a frame 9 and a roller 10, the frame 9 is connected with the transmission module, the roller 10 is installed on the frame 9, the frame 9 is provided with an object stage 11 for installing a counterweight, the pressure measuring module comprises a test bed 14 arranged below the roller 10, the test bed 14 is provided with a pressure sensor for measuring the pressure applied by the roller 10, and the upper part of the test bed 14 is used for arranging a metal plate 13 to be tested; the transmission module can drive the frame 9 to reciprocate.
As a preferred embodiment of the present invention, referring to fig. 1, 3-7, the transmission module comprises a worm 4, a worm wheel 5 and a slider-crank mechanism, one end of the worm 4 is connected with the power output end of the driving module, the worm wheel 5 is arranged above the worm 4 and meshed with the worm 4; the crank sliding block mechanism takes a worm wheel 5 shaft as a revolute pair, crank sliding block mechanisms are arranged on two sides of the worm wheel 5, and sliding blocks 8 in the crank sliding block mechanisms on two sides of the worm wheel 5 are respectively arranged on fixed guide rails 12 on two sides; two ends of the frame 9 are respectively connected with the sliding blocks 8 in the crank sliding block mechanisms at two sides.
Referring to fig. 1, 3 and 8, a vertical positioning pin 15 is disposed on the slider 8, a positioning hole 16 adapted to the positioning pin is disposed at an end of the frame 9, the frame 9 and the slider 8 are connected by the positioning hole 16 and the positioning pin 15, and the positioning hole 16 and the positioning pin 15 are in clearance fit.
Referring to fig. 1 and 2, the driving module comprises a motor 2 and a motor switch 1, the motor 2 is connected with the motor switch 1, and an output shaft of the motor 2 is connected with a power input end of the transmission module.
Referring to fig. 8, a vertical rod 17 is provided on the stage 11, and a weight is used as the counterweight and is sleeved on the vertical rod 17.
According to the invention, through simulating the friction and wear conditions in the rolling process, the rolling friction coefficient under the conditions of large load and large deformation can be efficiently and accurately measured, and the influence of the friction environment on the performance and the relevant characteristics of the wear test under the condition of large plastic deformation of metal are studied more effectively, so that effective experimental equipment guarantee is provided.
The roller type frictional wear test method of the present invention is performed by the above roller type frictional wear test of the present invention, and includes the following processes with reference to fig. 1 and 7:
installing a metal plate 13 to be tested on the upper part of a test bed 14, and loading a balance weight on an objective table 11;
the driving module drives the rolling rack 9 to horizontally reciprocate by utilizing the transmission module, the roller 10 rolls on the surface of the metal plate 13 to be tested, a wear test is carried out, and the pressure sensor measures the pressure applied to the metal plate 13 to be tested.
Examples
The roller type friction wear testing machine comprises a driving module, a transmission module, a rolling module, a pressure measuring module and a workbench, wherein the workbench comprises a motor chamber and a worm chamber.
As shown in fig. 2, the driving module includes a motor 2 and a motor switch 1, and the motor switch 1 controls the motor to start the motor 2, so as to provide power for the testing machine. As shown in figure 1, a motor 2 and a switch 1 are installed in a motor chamber at the side of a main workbench, the switch 1 is arranged at the upper part of the motor chamber, and the output end of the motor 2 is connected with a worm chamber.
As shown in fig. 3, the transmission module includes a worm 4 connected to a power output end (i.e. an output shaft of the motor) of the motor 2 by a coupler 3, the worm 4 obtains power of the motor 2 to rotate, a worm wheel 5 is engaged above the worm 4 to change a rotation direction, crank-slider mechanisms (see fig. 1 and 7) are respectively constructed at two sides of the worm wheel 5 by using a rotating shaft of the worm wheel 5 as a revolute pair, sliders 8 in the crank-slider mechanisms at two sides of the worm wheel 5 are respectively installed on fixed guide rails 12 at two sides, and the whole transmission module converts the power of the motor 2 from rotation to horizontal reciprocating motion of the sliders 8.
In the transmission module, the output end of a motor 2 is connected with a worm 4 through a coupler 3, the worm 4 obtains power of the motor 2 to rotate, a worm wheel 5 meshed with the worm 4 changes the rotating direction, a crank block mechanism is respectively constructed on two sides of the worm wheel 5 by taking a worm wheel 5 shaft as a revolute pair, and the power of the motor 2 is converted into horizontal linear reciprocating motion from rotation. The worm 4 is horizontally installed in the worm chamber, and transmits power output from the motor 2 to the engaged worm wheel 5.
As shown in fig. 4, in the worm and gear structure, the worm wheel 5 is placed right above the worm 4, half is in the worm chamber, half is on the workbench, the workbench surface is perforated, and the workbench is provided with a long hole at a position corresponding to the lower part of the worm wheel 5, into which the lower part of the worm wheel 5 extends, so that the worm wheel 5 rotates normally.
As shown in fig. 5 and 6, in the double-sided crank slider mechanism, the worm wheel shaft is used as a kinematic pair, the guide rail 12 and the slider 8 are friction pairs, the two connecting rods 6 are respectively fixed at two ends of the worm wheel 5 shaft, the two cranks 7 are respectively installed on the two sliders 8, and the connecting rods 6 and the cranks 7 are respectively connected at two sides.
As shown in fig. 6, two sliders 8 are fitted on two guide rails 12 therebelow.
As shown in fig. 7, in the double-sided crank block mechanism, holes are formed at both sides of the edge of the table top to allow the connecting rod 6 and the crank 7 to move normally. In the opening process, the opening is a long and narrow rectangular hole.
As shown in fig. 8, the rolling module includes a frame 9 for fixing the roller 10, an object stage 11 for bearing the weight is disposed at the upper end of the frame 9, a vertical rod 17 is disposed on the object stage 11, and the weight is sleeved on the vertical rod 17. The slider 8 is provided with a vertical positioning pin 15, the end part of the rack 9 is provided with a positioning hole 16 matched with the positioning pin, the rack 9 and the slider 8 are connected with the positioning pin 15 through the positioning hole 16, and the positioning hole 16 and the positioning pin 15 are in clearance fit. The rollers 10 are mounted on the frame 9 at both ends.
In the pressure measuring module, as shown in fig. 1, a pressure sensor is provided in a test stand 14 below the roller 10 for measuring the pressure applied by the rolling module, and the coefficient of friction is derived by a computer.
Based on the structure, the main working principle of the invention is as follows:
(1) the driving module comprises a motor 2 and a motor switch 1, and the motor switch 1 controls the motor to start 2 so as to provide power for the experiment machine.
(2) The transmission module comprises a worm 4 connected with the power output end of the motor 2 through a coupler 3, the worm 4 obtains the power of the motor 2 to rotate, a worm wheel 5 is meshed above the worm 4 to change the rotating direction, crank sliding block mechanisms are respectively constructed on two sides of the worm wheel 5 by taking a worm wheel 5 shaft as a rotating pair, sliding blocks 8 in the crank sliding block mechanisms on two sides of the worm wheel 5 are respectively installed on fixed guide rails 12 on two sides, and the whole transmission module converts the power of the motor 2 into horizontal reciprocating motion from rotation.
(3) The rolling module comprises a rack 9 for fixing a roller 10, an object stage 11 for bearing weights is arranged at the upper end of the rack 9, and the rack 9 is vertically sleeved on a sliding block 8 of the transmission module.
(4) The pressure measuring module comprises a pressure sensor arranged in a test stand 14 below the roller 10 for measuring the pressure exerted by the rolling module and thus the friction coefficient by a computer.
According to the technical scheme, the invention has the following characteristics:
(1) the slide block is provided with the guide rail on the workbench, so that when the slide block horizontally and linearly reciprocates, the friction pair of the crank-slide block mechanism almost has no friction force, and the pressure measuring sensor can better measure the roller pressure in the vertical direction.
(2) The worm and gear mechanism is skillfully designed, the transmission problem of two staggered shafts is solved, and the speed reduction effect is realized.
(3) The frame 9 and the slide block 8 are connected through the positioning hole 16 and the positioning pin 15, and the positioning hole 16 and the positioning pin 15 are in clearance fit, so that the accuracy of data measured by the pressure measuring sensor is greatly improved.
(4) In the rolling module, a high-strength frame and a large-area objective table are selected, so that the simulation of a large-load rolling condition can be met.
The popularization value of the invention is as follows
(1) The structure is simple, the device is small and convenient, the device can be used immediately after being opened, the working efficiency is high, and the device is particularly suitable for friction experiments of various scientific research institutions.
(2) The rolling friction coefficient under the conditions of large load and large deformation can be efficiently and accurately measured.
(3) The method provides effective experimental equipment guarantee for researching the influence of the friction environment on the performance and the relevant characteristics of the abrasion experiment under the condition of large plastic deformation of metal.
Claims (6)
1. The roller type friction wear testing machine is characterized by comprising a driving module, a transmission module, a rolling module and a pressure measuring module, wherein the driving module is connected with the transmission module, the transmission module is connected with the rolling module, the rolling module comprises a rack (9) and a roller (10), the rack (9) is connected with the transmission module, the roller (10) is installed on the rack (9), an objective table (11) for installing a balance weight is arranged on the rack (9), the pressure measuring module comprises a test table (14) arranged below the roller (10), a pressure sensor for measuring the pressure applied by the roller (10) is arranged in the test table (14), and a metal plate (13) to be tested is arranged on the upper part of the test table (14); the transmission module can drive the frame (9) to reciprocate.
2. The roll type friction wear testing machine according to claim 1, wherein the transmission module comprises a worm (4), a worm wheel (5) and a slider-crank mechanism, one end of the worm (4) is connected with the power output end of the driving module, and the worm wheel (5) is arranged above the worm (4) and meshed with the worm (4); the crank sliding block mechanism takes a worm wheel (5) shaft as a revolute pair, crank sliding block mechanisms are arranged on two sides of the worm wheel (5), and sliding blocks (8) in the crank sliding block mechanisms on the two sides of the worm wheel (5) are respectively arranged on fixed guide rails (12) on the two sides; two ends of the frame (9) are respectively connected with the sliding blocks (8) in the crank sliding block mechanisms at two sides.
3. The roll type friction wear testing machine according to claim 1, wherein a vertical positioning pin (15) is arranged on the sliding block (8), a positioning hole (16) matched with the positioning pin is formed in the end part of the rack (9), the rack (9) and the sliding block (8) are connected with the positioning pin (15) through the positioning hole (16), and the positioning hole (16) is in clearance fit with the positioning pin (15).
4. A roller friction wear test machine according to any one of claims 1 to 3, characterized in that the driving module comprises a motor (2) and a motor switch (1), the motor (2) is connected with the motor switch (1), and the output shaft of the motor (2) is connected with the power input end of the transmission module.
5. The roller type friction wear testing machine of claim 1, wherein a vertical rod (17) is disposed on the stage (11), and the weight is a weight, and the weight is sleeved on the vertical rod (17).
6. A roller type frictional wear test method, which is performed by the roller type frictional wear test of any one of claims 1 to 5, comprising the steps of:
installing a metal plate (13) to be tested on the upper part of a test bed (14), and loading a balance weight on an objective table (11);
the driving module drives the rolling rack (9) to horizontally reciprocate by utilizing the transmission module, the roller (10) rolls on the surface of the metal plate (13) to be tested to carry out a wear test, and the pressure sensor measures the pressure applied to the metal plate (13) to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010093452.4A CN111157387A (en) | 2020-02-14 | 2020-02-14 | Roller type friction and wear testing machine and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010093452.4A CN111157387A (en) | 2020-02-14 | 2020-02-14 | Roller type friction and wear testing machine and method |
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| Publication Number | Publication Date |
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| CN111157387A true CN111157387A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010093452.4A Pending CN111157387A (en) | 2020-02-14 | 2020-02-14 | Roller type friction and wear testing machine and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730131A (en) * | 2020-12-25 | 2021-04-30 | 西安建筑科技大学 | Device and method for detecting pipe inner wall curved surface-curved surface friction wear amount |
-
2020
- 2020-02-14 CN CN202010093452.4A patent/CN111157387A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730131A (en) * | 2020-12-25 | 2021-04-30 | 西安建筑科技大学 | Device and method for detecting pipe inner wall curved surface-curved surface friction wear amount |
| CN112730131B (en) * | 2020-12-25 | 2024-01-30 | 西安建筑科技大学 | Device and method for detecting frictional wear of curved surface-curved surface of inner wall of pipe |
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