CN101021466A - Multifunction friction wear testing machine - Google Patents
Multifunction friction wear testing machine Download PDFInfo
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- CN101021466A CN101021466A CNA2007100516195A CN200710051619A CN101021466A CN 101021466 A CN101021466 A CN 101021466A CN A2007100516195 A CNA2007100516195 A CN A2007100516195A CN 200710051619 A CN200710051619 A CN 200710051619A CN 101021466 A CN101021466 A CN 101021466A
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Abstract
The invention relates to an experimental device to detect and analyze wearing of superhard tool. It is a multifunctional rubbing-wearing experimental machine. It is characterized in that: it contains first hydraulic cylinder (1), soleplate (2), first guide (3), upright column (4), gliding block joint plate (5), crossbeam (6), torque sensor (7), hydraulic motor (8), headstock (9), principle axis (10), rotary transducer (11), workbench (13), third hydraulic cylinder (14), third guide (15), slip board (16), second guide (17), second hydraulic cylinder (19) and first pressure sensor (20). Set (20) in (1) and rotate speed measuring flag on principle axis of hole in (11). (11) and (9) are connected. (7) is composed of a twist bar (28) and two torque meter pressure sensors (29). The invention can realize drilling, sawing and milling of tool, test torque, drilling speed and infix pressure parameters of superhard tool during working.
Description
Technical field
The present invention relates to the experimental provision that sintered carbide toolses such as a kind of adamas, cubic boron nitride (as drill bit, saw blade, abrading block etc.) abrasion detection is analyzed.
Background technology
At the beginning of the sixties, the application of man-made diamond has promoted the development of adamas probing technology greatly, has caused a revolution of Exploration Domain.Yet, also artificial diamond's stoneware is not carried out the correlation means of Performance Detection in artificial diamond's stoneware context of detection.At present, artificial diamond's stoneware all is rule of thumb to produce, and product property what in the end, and the observation by the people in the on-the-spot often actual use obtains a result roughly, not all right go back to revise again the prescription and technology, the quantizating index that does not have science is as foundation.
Summary of the invention
The object of the present invention is to provide a kind of brill, saw, the multifunction friction wear testing machine of mill that can implementation tool, torque, penetration rate, drilling pressure parameter when this experimental machine can detect sintered carbide tools work.
To achieve these goals, technical scheme of the present invention is: multifunction friction wear testing machine, it is characterized in that it comprises first hydraulic cylinder 1, base plate 2, first guide rail 3, column 4, slide block web joint 5, crossbeam 6, torque sensor 7, oil motor 8, main shaft casing 9, main shaft 10, speed probe 11, worktable 13, the 3rd hydraulic cylinder 14, the 3rd guide rail 15, slide plate 16, second guide rail 17, second hydraulic cylinder 19, first pressure transducer 20, fixedly connected with the left part of base plate 2 in the lower end of column 4, column 4 upper edge Z are to being provided with first guide rail 3, first guide rail 3 is provided with Z to slide block 23, Z is fixedlyed connected with slide block web joint 5 to slide block 23, the cylinder head of first hydraulic cylinder 1 and slide block web joint 5 are hinged, the bottom of the cylinder body of first hydraulic cylinder 1 is passed first cylinder port 21 on the base plate 2 and is fixedlyed connected with base plate 2, fixedly connected with slide block web joint 5 in the left part of crossbeam 6, the right-hand member of crossbeam 6 is fixedlyed connected with main shaft casing 9, main shaft casing 9 is provided with spindle through-hole, the upper end of the output shaft of oil motor 8 and main shaft 10 links, the spindle through-hole of main shaft casing 9 is passed in the lower end of main shaft 10, and main shaft 10 is linked by bearing and main shaft casing 9;
Be provided with first pressure transducer 20 in first hydraulic cylinder 1, have the speed probe hole on the main shaft casing 9, the speed probe hole communicates with spindle through-hole on the main shaft casing 9, speed probe 11 penetrates in the speed probe hole, the main shaft at place, speed probe hole is provided with the tachometric survey sign, and speed probe 11 is fixedlyed connected with main shaft casing 9; Torque sensor 7 is made of torsion bar 28 and two torque measurement pressure transducers 29, one end of torsion bar 28 is fixedlyed connected with oil motor 8, the other end of torsion bar 28 is between two torque measurement pressure transducers 29, and two pressure transducers 29 are located on the crossbeam 6.
The fixedly connected water inlet web joint 12 in the lower end of main shaft casing 9, water inlet web joint 12 is provided with spindle through-hole, the lower end of main shaft 10 is passed the spindle through-hole of water web joint 12 into and is positioned at the into below of water web joint 12, the bottom of main shaft 10 is provided with water hole 25, be provided with the water ring road in the water inlet web joint 12, the water ring road communicates with the water inlet interface of water inlet on the web joint 12, and water hole 25 communicates with water ring road on the web joint 12 of intaking.
Tachometric survey is designated serrate slot, eyelet, protruding key or groove.
Experimental machine of the present invention the time has the motion of three directions in work, and promptly the feeding on three directions can realize by stretching of hydraulic cylinder respectively; During work sintered carbide tools (as drill bit, saw blade, abrading block etc.) is fixed on the lower end of main shaft 10, test specimen (target) is clamped on the worktable 13, is being with sintered carbide tools that test specimen is implemented experiment by main shaft 10; Feeding on X-axis, the Y direction is applicable to cuts (i.e. saw) to target; Feeding on the Z axle can be used to realize creeping into and grinding.
Torque measurement principle and process:
1) the torque measurement pressure transducer is placed on the crossbeam contacts with torsion bar.
2) torsion bar is connect mutually with oil motor 8.
3) down, under the test specimen reaction force acts, oil motor bolt 26 limits its axial freedom to oil motor 8 in working order, oil motor 8 can only drive torsion bar around self axis rotation, slowly loads, the torque measurement pressure transducer is applied maximum, force F, measure arm of force L.
Calculate moment M=FL and promptly can be used as oil motor 8 max. output torque; The measurement of the torque in the time of can realizing tool work.
Drilling pressure measuring principle and process: drilling pressure is measured by pressure transducer 20 and is detected, when work, first hydraulic cylinder 1 is done telescopic moving, and pressure transducer 20 detects and obtains the variation of cylinder block inner fluid pressure, and the product of oil liquid pressure and piston area just obtains the drilling tool drilling pressure; Can realize measurement to drilling pressure.
Penetration rate measuring principle and process: penetration rate is measured by speed probe (current vortex speed probe) 11 and is detected, be suitable for measuring any rotating speed from more than zero rotating speed, rotating speed generating means for the measured body rotating shaft requires also very low, can open a little serrate slots on the main shaft 10, also can be a very little eyelet, a little protruding key, a little groove; The measurement that speed probe 11 is realized main shaft 10 rotating speeds can realize the measurement to penetration rate.
The present invention can simulate actual condition by torque sensor 7, speed probe 11, first pressure transducer 20 are set, torque, penetration rate, drilling pressure running parameter and abrasion condition thereof when detecting tool made of superhard material work in real time, and transfer data to computing machine analysis, for the working mechanism that discloses the superhard material goods and failure cause provide science, reliable experimental.Simple in structure, control stabilization reliable characteristics that the present invention has.
The present invention can be widely used in fields such as the production, scientific research, teaching of sintered carbide toolses such as adamas, cubic boron nitride.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is the left view of Fig. 1
Fig. 3 is the vertical view of Fig. 1
Fig. 4 is the structural representation of base plate of the present invention
Fig. 5 is the right view of Fig. 4
Fig. 6 is the vertical view of Fig. 4
Fig. 7 is the structural representation of column of the present invention
Fig. 8 is the right view of Fig. 7
Fig. 9 is the vertical view of Fig. 7
Figure 10 is the structural representation of slide block web joint of the present invention
Figure 11 is the left view of Figure 10
Figure 12 is the structural representation of crossbeam of the present invention
Figure 13 is the vertical view of Figure 12
Figure 14 is the structural representation of main shaft casing of the present invention
Figure 15 is the left view of Figure 14
Figure 16 is the vertical view of Figure 14
Figure 17 is the structural representation of main shaft of the present invention
Figure 18 is the intake structural representation of web joint of the present invention
Figure 19 is the left view of Figure 18
Figure 20 is the vertical view of Figure 18
Figure 21 is the structural representation of slide plate of the present invention
Figure 22 is the left view of Figure 21
Figure 23 is the vertical view of Figure 21
Figure 24 is the structural representation of worktable of the present invention
Figure 25 is the left view of Figure 24
Figure 26 is the vertical view of Figure 24
Figure 27 is the structural representation of torque sensor 7 of the present invention
Figure 28 is the structural representation of bolt 26 of the present invention
Figure 29 is the schematic diagram of hydraulic system of the present invention
Figure 30 is computer data acquiring of the present invention and control system block diagram
Figure 31 is filtering, the amplification circuit diagram of computer data acquiring of the present invention and control system
Figure 32 is the data transmission link figure of computer data acquiring of the present invention and control system
Figure 33 is the microcontroller system circuit figure of computer data acquiring of the present invention and control system
Among the figure: 1-first hydraulic cylinder, 2-base plate, 3-the-guide rail, the 4-column, 5-slide block web joint, 6-crossbeam, the 7-torque sensor, 8-oil motor, 9-main shaft casing, 10-main shaft, 11-speed probe, the 12-web joint of intaking, the 13-worktable, 14-the 3rd hydraulic cylinder, 15-the 3rd guide rail, the 16-slide plate, 17-second guide rail, 18-second pressure transducer, 19-second hydraulic cylinder, 20-first pressure transducer, 21-first cylinder port, 22-groove, 23-Z are to slide block, and 24-X is to slide block, the 25-water hole, 26-bolt, 27-axial limiting plate, the 28-torsion bar, 29-torque measurement pressure transducer, 30-articulated joint.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, figure l5, Figure 16, Figure 17, Figure 18, Figure 19, Figure 20, Figure 21, Figure 22, Figure 23, Figure 24, Figure 25, Figure 26, Figure 27, Figure 28, shown in Figure 29, multifunction friction wear testing machine, it comprises first hydraulic cylinder 1, base plate 2, first guide rail 3, column 4, slide block web joint 5, crossbeam 6, torque sensor 7, oil motor 8, main shaft casing 9, main shaft 10, speed probe 11, water inlet web joint 12, worktable 13, the 3rd hydraulic cylinder 14, the 3rd guide rail 15, slide plate 16, second guide rail 17, second pressure transducer 18, second hydraulic cylinder 19, first pressure transducer 20, (passing through bolt) fixedlyed connected in the lower end of column 4 with the left part of base plate 2, column 4 upper edge Z are to being provided with first guide rail 3, first guide rail 3 is provided with Z, and (Z is provided with chute and is stuck on first guide rail 3 in slide block 23 to slide block 23, Z can slide along first guide rail 3 to slide block 23), Z is fixedlyed connected (passing through bolt) to slide block 23 with slide block web joint 5, the cylinder head of first hydraulic cylinder 1 and slide block web joint 5 are hinged, the bottom of the cylinder body of first hydraulic cylinder 1 is passed first cylinder port 21 on the base plate 2 and is fixedlyed connected with base plate 2, (passing through bolt) fixedlyed connected in the left part of crossbeam 6 with slide block web joint 5, the right-hand member of crossbeam 6 is fixedlyed connected (passing through bolt) with main shaft casing 9, main shaft casing 9, water inlet web joint 12 is respectively equipped with spindle through-hole, water inlet web joint 12 is positioned at the lower end of main shaft casing 9 and fixedlys connected (passing through bolt) with main shaft casing 9, oil motor 8 passes the oil motor hole on the axial limiting plate 27, limited block on the oil motor 8 is positioned at the axial limiting plate, and 27 times (oil motor 8 is rotatable, but can not move axially), axial limiting plate 27 is fixedlyed connected with the upper surface of main shaft casing 9 by bolt 26, the upper end of the output shaft of oil motor 8 and main shaft 10 links, the spindle through-hole of main shaft casing 9 is passed in the lower end of main shaft 10, the spindle through-hole of water inlet web joint 12 is positioned at the into below of water web joint 12, and main shaft 10 is linked by bearing and main shaft casing 9; The bottom of main shaft 10 is provided with water hole 25, and water inlet is provided with the water ring road in the web joint 12, and the water ring road communicates with water inlet interface on the water inlet web joint 12, and water hole 25 communicates with water ring road on the web joint 12 of intaking;
Be respectively equipped with first pressure transducer 20, second pressure transducer 18, the 3rd pressure transducer in first hydraulic cylinder 1, second hydraulic cylinder 19, the 3rd hydraulic cylinder 14; Have the speed probe hole on the main shaft casing 9, the speed probe hole communicates with spindle through-hole on the main shaft casing 9, speed probe 11 penetrates in the speed probe hole, the main shaft at place, speed probe hole is provided with tachometric survey sign (as serrate slot, eyelet, protruding key or groove), and speed probe 11 is fixedlyed connected with main shaft casing 9; Torque sensor 7 is made of torsion bar 28 and two torque measurement pressure transducers 29, one end of torsion bar 28 is fixedlyed connected with oil motor 8, the other end of torsion bar 28 is between two pressure transducers 29 of torque measurement, and two pressure transducers 29 are located on the crossbeam 6.
Select the driving arrangement of GM5-6 type oil motor for use as main shaft; Three hydraulic cylinders are selected DG-J40C-E1E for use, adopt three hydraulic cylinders to realize the motion of three directions, have the control stabilization reliable characteristics; Guide rail and slide block constitute the rail pair, select the HJG-D25 of Hanyang machine tool plant specification linear rolling guide for use.
The effect of oil motor 8, main shaft casing 9, water inlet web joint 12 is that the rotation by oil motor drives main shaft and diamond tool rotates, transmit moment of torsion, temperature during simultaneously by the work of water inlet web joint 12 water supply reduction diamond tool and broken the cutting that will cut down are washed away.
Data acquisition and transmission:
Computer data acquiring and control system are made up of slave computer and host computer two parts, and slave computer, host computer two parts all can adopt known technology, below slave computer, host computer two parts are summarized as follows:
As shown in figure 30, epigynous computer section is a computing machine, with the reception data program of Visual Basic exploitation, adopts the Single Chip Microcomputer (SCM) system (being multifunctional data acquisition card) of serial ports and slave computer to carry out communication, uses the RS-232C agreement.Can realize the operation of manual control single chip computer, parameters such as single-chip microcomputer image data length, filter length, sampling interval are set, and can come the operation of automatic control single chip computer by time or image data length are set.
As Figure 30, Figure 31, Figure 32, shown in Figure 33, slave computer partly comprises the hardware circuit of channel datas such as can detecting rotating speed, drilling pressure, torque, and (be multifunctional data acquisition card, as shown in figure 33) to its Single Chip Microcomputer (SCM) system of carrying out corresponding data processing, unloading and transmitting data to host computer.Single chip part adopts the AT89C51 of band 4KROM, and data-carrier store uses 62256 of 32K, and has adopted the decoding of GAL device and carried out basic computing.Shown in figure 32, hop carries out protocol conversion with MAX232.As shown in figure 31, the amplifying circuit of signal conditioning circuit adopts the LM324 chip to amplify, and carries out the A/D conversion with ADC0809.
As shown in figure 30, among Figure 30:
AD0-speed probe (PN1) input, positive pulse signal, Transistor-Transistor Logic level;
AD1-torque sensor (P0) input, voltage signal amplitude 0～5V;
The AD2-first pressure transducer 20[creeps into the oil cylinder working-pressure sensor] (P1) input, voltage signal amplitude 0～5V;
AD3-second pressure transducer 18, the 3rd pressure transducer [worktable oil cylinder sensor] (P2) are imported voltage signal amplitude 0～5V;
DA0-connects hydraulic system proportional pressure control valve controller, control voltage magnitude 0～10.0V;
DA1-connects hydraulic system proportional reversing valve controller, control voltage magnitude ± 15V;
D00-Oil pump electrical machinery work control end, " 1 " operation, shut down " 0 ";
D01-creeps into the cylinder action control end, and creep into " 1 ", and " 0 " stops;
D02-creeps into the cylinder action control end, and " 1 " promotes drill bit, and " 0 " stops.
The D03-worktable feeds the cylinder action control end, and " 1 " is moved to the left, and " 0 " stops.
The D04-worktable feeds the cylinder action control end, and to by moving, " 0 " stops " 1 ".
1, drilling pressure detection scheme
Because sintered carbide tools (as drill bit) is in running order, has the interference that does not stop shaking, and can't directly detect drill bit.But suffered stress, the oil pressure of oil cylinder and the drilling pressure of drill bit of worktable entablature all has the corresponding linear relation, bit pressure becomes the big then suffered stress of crossbeam and also becomes big, corresponding oil cylinder also can become big to its driving force, so can draw drilling pressure indirectly by measurement to suffered stress of crossbeam and hydraulic cylinder oil pressure.
Detect the suffered stress of crossbeam, can connect first pressure transducer 20 (strain pressure transducer) at the high-pressure side port of first hydraulic cylinder 1 during use, sensor is delivered to filtering, amplifying circuit with signal, delivers to 8031 again after the AD conversion, and then delivers to computing machine.
2, rotating speed detection scheme
The method that detects rotating speed has a lot, and wherein common method has:
A) use photoelectric encoder to detect rotating speed;
B) use tech-generator to detect rotating speed;
C) use near switch detection rotating speed;
D) detect rotating speed by detecting current of electric;
According to topworks's design feature, consider cost, to factors such as the layout influence of mechanical part are little, finally select scheme 3 (use near switch and detect rotating speed) for use.
3, torque detection scheme
1), torque measurement principle and process:
(1) pressure transducer is placed on the crossbeam contacts with torsion bar.
(2) torsion bar is connect mutually with oil motor 8.
(3) down, under the test specimen reaction force acts, oil motor bolt 26 limits its axial freedom to oil motor 8 in working order, oil motor 8 can only drive torsion bar around self axis rotation, slowly loads, pressure transducer is applied maximum, force F, measure arm of force L.
Calculate moment M=FL and promptly can be used as oil motor 8 max. output torque; The measurement of the torque in the time of can realizing tool work.
2), at pressing plate of worktable lateral layout, pressure transducer is placed on the pressing plate limit, when drill bit revolution cutting rock sample,, can calculate the size of the cutting moment of torque by the stool and urine of measuring this acting force because the effect of tangential force makes pressing plate function on the worktable in the end of pressure transducer.
4, the selection of sensor
Torque measurement pressure transducer 29 is selected the AK-4 type strain pressure transducer of being produced by the 701st research institute of China Aerospace Science and Technology Corporation for use, measurement range should be between 0 ~ 20MP, resolution should reach more than the 0.1MP, working temperature is between the room temperature environment (20 ℃ ~ 40 ℃), certain overload capacity should be arranged, and reliability is wanted better.
Rotating speed detects and adopts Changchun SanFeng sensing Technology Co., Ltd near switch LJM38T-18J/K.
5, data transmission
Because this computer data acquiring and control system need real-time image data, the only temporary a spot of data of the data-carrier store of single-chip microcomputer need after certain quantity to be collected it is transferred to computing machine, to be for further processing.So answer the design data transmission circuit.
In computer data acquiring and control system, data communication mainly adopts the asynchronous serial communication mode.The asynchronous serial communication interface has three classes:
·RS-232C(RS-232A，RS232B)
RS-449, RS-422, RS-423 and RS-485
The 20mA electric current loop
Three kinds of performances that communication standard is had nothing in common with each other on communication speed, communication distance and antijamming capability.The electrical specification of common standard serial interface all has maximum communication speed and the transmitting range index when satisfying reliable transmission.But have correlativity between these two indexs of communication speed and communication distance, suitably reduce communication speed, can improve communication distance, vice versa.When adopting the RS-232C standard to carry out the one-way data transmission, maximum data transfer rate is 20K bit/s, and maximum transmitting range is 15m.When using the RS-422 standard instead, peak transfer rate can reach 10M bit/s, and maximum transmitting range is 300m, suitably reduces message transmission rate, and transmitting range can reach 1200m.
Select which kind of communication standard, because of the occasion of using different different.Because this computer data acquiring and control system are only at laboratory experiment, required transmission range is shorter, so can select the RS-232C interface standard.
6, the software design of system
The software design of computer data acquiring and control system is divided into slave computer and host computer two parts, slave computer is at single-chip microcomputer, with the assembly routine that the MCS-51 instruction is write, mainly realize receiving the instruction of host computer, the start and stop of controlling ADC0809, reception and handle the functions such as signal, digital filtering, unloading data and transmission data that the photoelectricity passage transmits; Host computer is based on the OO reception data program that PC is write with Visual Basic, main realize selecting PORT COM, show the start and stop of current state, control single chip computer in real time, the port number that single-chip microcomputer will gather, every frame data length, single-chip microcomputer are set to parameters such as the digital filtering length of analog channel, sampling interval length, and can be provided with and gather functions such as single-chip microcomputer stops automatically behind certain data length or the certain hour.
Claims (4)
1. multifunction friction wear testing machine, it is characterized in that it comprises first hydraulic cylinder (1), base plate (2), first guide rail (3), column (4), slide block web joint (5), crossbeam (6), torque sensor (7), oil motor (8), main shaft casing (9), main shaft (10), speed probe (11), worktable (13), the 3rd hydraulic cylinder (14), the 3rd guide rail (15), slide plate (16), second guide rail (17), second hydraulic cylinder (19), first pressure transducer (20), fixedly connected with the left part of base plate (2) in the lower end of column (4), column (4) upper edge Z is to being provided with first guide rail (3), first guide rail (3) is provided with Z to slide block (23), Z is fixedlyed connected with slide block web joint (5) to slide block (23), the cylinder head of first hydraulic cylinder (1) and slide block web joint (5) are hinged, the bottom of the cylinder body of first hydraulic cylinder (1) is passed first cylinder port (21) on the base plate (2) and is fixedlyed connected with base plate (2), fixedly connected with slide block web joint (5) in the left part of crossbeam (6), the right-hand member of crossbeam (6) is fixedlyed connected with main shaft casing (9), main shaft casing (9) is provided with spindle through-hole, the upper end of the output shaft of oil motor (8) and main shaft (10) links, the spindle through-hole of main shaft casing (9) is passed in the lower end of main shaft (10), and main shaft (10) is linked by bearing and main shaft casing (9);
Base plate (2) upper edge X is to being provided with second guide rail (17), second guide rail (17) is provided with X to slide block (24), the right part of base plate (2) has groove (22), fixedly connected to slide block (24) with X in the lower surface of slide plate (16), the groove (22) that base plate (2) are passed in articulated joint (30) on the slide plate (16) is hinged with the cylinder head of second hydraulic cylinder (19), and the cylinder body of second hydraulic cylinder (19) and base plate (2) are hinged; Slide plate (16) top along Y to being provided with the 3rd guide rail (15), the 3rd guide rail (15) is provided with Y to slide block, fixedly connected to slide block with Y in the lower surface of worktable (13), the cylinder head of the 3rd hydraulic cylinder and worktable (13) are hinged, and the cylinder body of the 3rd hydraulic cylinder and slide plate (16) are hinged;
Be provided with first pressure transducer (20) in first hydraulic cylinder (1), the main shaft casing has the speed probe hole on (9), the speed probe hole communicates with spindle through-hole on the main shaft casing (9), speed probe (11) penetrates in the speed probe hole, the main shaft at place, speed probe hole is provided with the tachometric survey sign, and speed probe (11) is fixedlyed connected with main shaft casing (9); Torque sensor (7) is made of torsion bar (28) and two torque measurement pressure transducers (29), one end of torsion bar (28) is fixedlyed connected with oil motor (8), the other end of torsion bar (28) is positioned between two pressure transducers (29), and two torque measurement pressure transducers (29) are located on the crossbeam (6).
2. multifunction friction wear testing machine according to claim 1, it is characterized in that: the fixedly connected water inlet web joint (12) in the lower end of main shaft casing (9), water inlet web joint (12) is provided with spindle through-hole, the lower end of main shaft (10) is passed the spindle through-hole of water web joint (12) into and is positioned at the into below of water web joint (12), the bottom of main shaft (10) is provided with water hole (25), be provided with the water ring road in the water inlet web joint (12), the water ring road communicates with water inlet interface in water inlet web joint (12), and water hole (25) communicate with water ring road on the web joint (12) of intaking.
3. multifunction friction wear testing machine according to claim 1 is characterized in that: tachometric survey is designated serrate slot, eyelet, protruding key or groove.
4. multifunction friction wear testing machine according to claim 1, it is characterized in that: oil motor (8) passes the oil motor hole on the axial limiting plate (27), limited block on the oil motor (8) is positioned under the axial limiting plate (27), and axial limiting plate (27) is fixedlyed connected with the upper surface of main shaft casing (9) by bolt (26).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100516195A CN100529730C (en) | 2007-03-05 | 2007-03-05 | Multifunction friction wear testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100516195A CN100529730C (en) | 2007-03-05 | 2007-03-05 | Multifunction friction wear testing machine |
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| CN101021466A true CN101021466A (en) | 2007-08-22 |
| CN100529730C CN100529730C (en) | 2009-08-19 |
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| CN102323171A (en) * | 2011-06-14 | 2012-01-18 | 三一重机有限公司 | Wabble end face type friction-wear test device and method |
| CN101832898B (en) * | 2009-12-16 | 2012-05-23 | 安徽工业大学 | Horizontal end face frictional wear tester |
| CN102519867A (en) * | 2011-12-21 | 2012-06-27 | 中国石油大学(北京) | Direct-acting soft friction testing apparatus |
| CN102809516A (en) * | 2012-07-30 | 2012-12-05 | 燕山大学 | Pneumatic variable-load friction wear testing machine and testing method for testing machine |
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| CN114459938A (en) * | 2022-01-22 | 2022-05-10 | 天地上海采掘装备科技有限公司 | Spraying system and abrasion test bed |
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- 2007-03-05 CN CNB2007100516195A patent/CN100529730C/en not_active Expired - Fee Related
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| CN101832898B (en) * | 2009-12-16 | 2012-05-23 | 安徽工业大学 | Horizontal end face frictional wear tester |
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