CN111141515A - Electric main shaft reliability test simulation loading device - Google Patents
Electric main shaft reliability test simulation loading device Download PDFInfo
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- CN111141515A CN111141515A CN202010117793.0A CN202010117793A CN111141515A CN 111141515 A CN111141515 A CN 111141515A CN 202010117793 A CN202010117793 A CN 202010117793A CN 111141515 A CN111141515 A CN 111141515A
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- G01M13/00—Testing of machine parts
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Abstract
本发明属于机械试验设备技术领域，涉及一种电主轴可靠性试验模拟加载装置；包括主支撑体和应力加载装置；主支撑体包括支撑圆盘；应力加载装置包括压电陶瓷加载装置、测功机加载装置、膜片联轴器、加载单元、油污加载装置和电主轴加载装置；压电陶瓷加载装置、测功机加载装置和电主轴加载装置固定在支撑圆盘上；膜片联轴器和加载单元安装在测功机加载装置和电主轴加载装置之间；膜片联轴器一端与加载单元连接，另一端连接测功机加载装置；油污加载装置安装在电主轴加载装置上，与电主轴轴芯同轴；本发明针对动态切削力、切削扭矩、油液污染影响电主轴可靠性的三个重要因素，分别设计了加载装置，真实地模拟电主轴实际切削过程中受到的所有载荷。
The invention belongs to the technical field of mechanical testing equipment, and relates to an electric spindle reliability test simulation loading device; comprising a main support body and a stress loading device; the main support body includes a support disc; the stress loading device includes a piezoelectric ceramic loading device, a dynamometer Machine loading device, diaphragm coupling, loading unit, oil pollution loading device and electric spindle loading device; piezoelectric ceramic loading device, dynamometer loading device and electric spindle loading device are fixed on the supporting disc; diaphragm coupling And the loading unit is installed between the dynamometer loading device and the electric spindle loading device; one end of the diaphragm coupling is connected with the loading unit, and the other end is connected with the dynamometer loading device; the oil pollution loading device is installed on the electric spindle loading device, and The shaft core of the electric spindle is coaxial; the present invention designs loading devices for the three important factors that affect the reliability of the electric spindle, such as dynamic cutting force, cutting torque and oil pollution, to truly simulate all the loads that the electric spindle is subjected to during the actual cutting process. .
Description
Technical Field
The invention belongs to the technical field of mechanical test equipment, relates to a reliability test simulation loading device for an electric spindle, and particularly relates to a reliability test simulation loading device capable of simulating dynamic cutting force, cutting torque and oil pollution of the electric spindle in a cutting process and realizing multi-degree-of-freedom multi-stress composite loading.
Background
The numerical control machine tool is an important foundation for realizing industrial modernization, and the quality, the performance and the ownership of the numerical control machine tool become important marks for measuring the national industrialization level and the comprehensive national strength. The electric spindle is a key functional part of the numerical control machine tool, and the reliability level of the electric spindle directly influences the reliability of the whole numerical control machine tool due to the complex structure and frequent failure. The fault data of the field reliability tracking test of the numerical control machine tool shows that the dynamic cutting force, the torque and the oil pollution on the electric spindle are main causes of the electric spindle fault.
At present, most of domestic and foreign reliability test devices for electric spindles are connected with a spindle through a coupling by a dynamometer, then the cutting torque of the electric spindle is simulated, axial force and radial force are directly applied to the tested spindle, and no reliability test device for the electric spindle, which can simulate dynamic cutting force, cutting torque and oil pollution of the electric spindles of different types and specifications in the cutting process, is available. The reliability test bed can not well simulate the real working condition of the electric spindle in the cutting process, and the excited spindle has incomplete faults, so that the reliability evaluation result of the electric spindle is inaccurate, and even the reliability design of the electric spindle of the numerical control machine tool is influenced.
Disclosure of Invention
The invention aims to solve the technical problem that the prior art can not comprehensively simulate the dynamic cutting force, the cutting torque and the oil pollution of electric spindles with different models and specifications, and therefore, the multi-freedom-degree composite stress loading simulation electric spindle reliability test loading device capable of simulating the dynamic cutting force, the cutting torque and the oil pollution of the electric spindles with different models and specifications is designed.
To solve the above technical problems, the technical solution of the present invention is as follows, which is described with reference to the accompanying drawings as follows:
a simulation loading device for an electric spindle reliability test comprises a main support body and a stress loading device;
the main support comprises a support disc 4;
the stress loading device comprises a piezoelectric ceramic loading device 1, a dynamometer loading device 2, a diaphragm coupling 3, a loading unit 5, an oil stain loading device 6 and an electric spindle loading device 7;
the supporting disc 4 is fixed on a ground flat iron 10;
the piezoelectric ceramic loading device 1, the dynamometer loading device 2 and the electric spindle loading device 7 are fixed on the supporting disc 4;
the diaphragm coupling 3 and the loading unit 5 are arranged between the dynamometer loading device 2 and the electric spindle loading device 7;
one end of the diaphragm coupling 3 is connected with the loading unit 5, and the other end of the diaphragm coupling is connected with the dynamometer loading device 2.
The oil stain loading device 6 is arranged on the electric spindle loading device 7 and is coaxial with the shaft core of the electric spindle;
in the technical scheme, the supporting disk 4 comprises a rotating disk 11, a disk driving motor 12 and a disk base 13. The disc driving motor 12 is fixed on the disc base 13, and the disc driving motor 12 drives the rotating disc 11 to rotate around the motor shaft, so that the rotation of the loading device in the horizontal plane is realized.
The piezoelectric ceramic loading device 1 in the technical scheme comprises a main protection body 14, a loading guide rail 15, an arc-shaped slide way 16, a slide block A17, a slide block B18, an arc-shaped rack A19, a gear A20, a loading arm 21, a slide block C22, a slide block D23, an arc-shaped rack B24, a gear B25 and piezoelectric ceramic 26. The loading guide rail 15 is fixed at the top in the main protection body 14 through a bolt, and an arc-shaped rack A19 is arranged on the lower arc surface of the loading guide rail 15; the gear A20 is arranged on the arc-shaped slideway 16 and is meshed with the arc-shaped rack A19; the gear A20 rotates on the arc-shaped rack A19, so that the arc-shaped slide way 16 is driven to slide on the loading guide rail 15 through the slide block A17 and the slide block B18; an arc-shaped rack B24 is arranged on the lower arc surface of the arc-shaped slide way 16, and a gear B25 is arranged on the loading arm 21 and meshed with the arc-shaped rack B24; the gear B25 rotates on the arc-shaped rack B24, so that the loading arm 21 is driven to slide on the arc-shaped slide way 16 through the slide block C22 and the slide block D23, and the spatial multi-degree-of-freedom conversion of the whole piezoelectric ceramic loading device is realized.
The loading arm 21 comprises a gear support 27, a hydraulic rod 28, a loading arm joint I29, a loading arm joint II 30, a loading arm motor shaft A31, a loading arm joint III-A32, a loading arm motor shaft B33, a loading arm motor shaft C34, a loading arm joint III-B35, a loading arm motor shaft D36, a loading arm motor shaft E37, a piezoelectric ceramic holding clamp A38 and a piezoelectric ceramic holding clamp B39. The hydraulic rod 28 is positioned above the loading arm joint I29 and drives the loading arm joint I29 to move up and down in a hydraulic control mode; the loading arm joint I29 is connected with a loading arm joint II 30 through a loading arm motor shaft A31, and the loading arm motor shaft A31 drives the loading arm joint II 30 to rotate around the shaft. The loading arm joint I29 is connected with a loading arm joint III-A32 and a loading arm joint III-B35 through a loading arm motor shaft B33 and a loading arm motor shaft C34 on two sides, and the loading arm motor shaft B33 and the loading arm motor shaft C34 respectively drive the loading arm joint III-A32 and the loading arm joint III-B35 to rotate around the shafts of the loading arm joint III-A32 and the loading arm joint III-B35; the loading arm joint III-A32 is connected with a piezoelectric ceramic holding clamp A38 through a loading arm motor shaft D36, the loading arm joint III-B35 is connected with a piezoelectric ceramic holding clamp B39 through a loading arm motor shaft E37, and the loading arm joint III-A32 and the loading arm joint III-B35 respectively drive the piezoelectric ceramic holding clamp A38 and the piezoelectric ceramic holding clamp B39 to rotate around the shafts of the piezoelectric ceramic holding clamp A38 and the piezoelectric ceramic holding clamp B39, so that the relaxation and clamping of the piezoelectric ceramic 26 and the angle transformation of the loading arm 21 in space are realized.
The loading arm 21 clamps the piezoelectric ceramic 26 through a piezoelectric ceramic clamp a38 and a piezoelectric ceramic clamp B39, so as to realize dynamic force loading on the electric spindle.
The loading arm 21 is matched with the supporting disc 4 and the piezoelectric ceramic loading device 1 to realize the multi-degree-of-freedom transformation of the piezoelectric ceramic 26 in space, so that the stress conditions in different directions in the cutting process of the electric spindle are simulated.
The dynamometer loading device 2 in the technical scheme comprises a dynamometer 40, a guide post 41, a dynamometer connecting plate 42, a lead screw guide rail 43 and a dynamometer loading device bottom plate 44. The dynamometer 40 is fixed on a dynamometer connecting plate 42 through a fastening bolt; the bottom surfaces of the four guide posts 41 are fixed on a dynamometer loading device bottom plate 44 and are connected with a dynamometer connecting plate 42; the upper end of the screw guide rail 43 is fixed on the dynamometer connecting plate 42, the lower end is fixed on the dynamometer loading device bottom plate 44, and the dynamometer connecting plate 42 is driven to move up and down through screw transmission.
The loading unit 5 in the technical scheme comprises a simulation tool shank 45, an upper loading unit cover 46, a bearing 47, a sleeve 48, a lower loading unit cover 49, a loading unit shell 50 and a cooling pipe 51. A loading unit upper cover 46, a bearing 47, a sleeve 48 and a loading unit lower cover 49 are sequentially assembled at one end of the simulation tool shank 45, and a loading unit shell 50 is sleeved outside; the cooling pipe 51 is nested in a recess inside the loading unit housing 50, thereby achieving cooling of the entire loading unit 5.
One end of the simulation tool handle 45 is connected with the diaphragm coupler 3, and the other end of the simulation tool handle is connected with the electric spindle loading device 7.
The loading unit housing 50 is provided with a recess 52.
The oil contamination loading device 6 in the technical scheme comprises a protective cover 53, an oil immersion box body I54, a sealing ring 55, a spray head 56, an oil spraying pipe 57, an oil immersion box body II 58, a locking bolt 59, a fixing ring I60 and a fixing ring II 61. In the protective cover 53, oily box body I54 and oily box body II 58 detain mutually, are fixed by solid fixed ring I60 and solid fixed ring II 61 to through locking bolt 59 with solid fixed ring I60 and solid fixed ring II 61 locking. Sealing rings 55 are installed on the inner sides of the oil immersion box body I54 and the oil immersion box body II 58, and good sealing performance is achieved after the oil immersion box body I54 and the oil immersion box body II 58 are buckled. An oil injection hole is formed in the oil immersion box body II 58, and colored oil liquid pollution mixed liquid is injected into the oil immersion box body formed by the oil immersion box body I54 and the oil immersion box body II 58 through the oil injection hole to simulate the oil liquid pollution condition in the spindle cutting process, so that the sealing performance of the joint between the electric spindle shell and the bearing end cover is detected;
the oil stain loading device 6 comprises a protective cover 53, an oil immersion box body I54, a spray head 56, an oil spraying pipe 57, an oil immersion box body II 58, a locking bolt 59, a fixing ring I60 and a fixing ring II 61; in the protective cover 53, the oil immersion box body I54 and the oil immersion box body II 58 are buckled and fixed by a fixing ring I60 and a fixing ring II 61, and the fixing ring I60 and the fixing ring II 61 are locked by a locking bolt 59; an oil injection hole is formed in the oil immersion box body II 58, and oil with colors is injected into the oil immersion box body formed by the oil immersion box body I54 and the oil immersion box body II 58 through the oil injection hole to pollute the mixed liquid;
the spray head 56 is fixed at one end of the oil spraying pipe 57, and the other end of the oil spraying pipe 57 is located on the oil immersion box body I54 or the oil immersion box body II 58.
Preferably, four shower nozzles 56 are fixed respectively in four oil spout pipe 57 one ends, and four two liang of a set of oil spout pipe 57 other ends are located on oily box body I54 and oily box body II 58, and the fluid pollution mixed liquid of taking the colour is poured into through the oil filler point pressure boost, makes the mixed liquid spout through four shower nozzles 56, and the fluid that receives pollutes among the simulation main shaft cutting process to detect the leakproofness in gap between electric main shaft axle core and the end cover.
In the technical scheme, the electric spindle loading device 7 comprises an electric spindle loading device shell 62, a spindle holding and clamping adjusting mechanism 63, a holding and clamping plate 64, an electric spindle 65, a V-shaped supporting structure 66, a movable sliding plate 67, a sliding block E68, a linear slideway 69 and an electric spindle loading device bottom plate 70. The electric spindle loading device shell 62 is connected with a clamping plate 64 through a spindle clamping adjusting mechanism 63; the height of the main shaft clamping adjusting mechanism 63 is adjusted through hydraulic pressure, so that the clamping plate 64 can move up and down to be attached to the electric main shaft 65, and the mounting and testing of electric main shafts of different models are adapted; the bottom of the electric spindle loading device shell 62 is fixed on the movable sliding plate 67 through foundation bolts, four V-shaped supporting structures 66 are aligned in pairs and fixed on the movable sliding plate 67 through fastening bolts, support the electric spindles 65 together, form different-angle supports through hydraulic adjustment, and are matched with the clamping plates 64 to jointly realize clamping of multiple types of electric spindles; the linear slideway 69 is fixed on the electric spindle loading device bottom plate 70 through a bolt, and slides through the slide block E68 to drive the movable slide plate 67 to slide, so that the whole electric spindle loading device 7 moves back and forth, and the installation and feeding movement of the electric spindle is facilitated.
The electric spindle reliability test simulation loading device also comprises auxiliary equipment;
the auxiliary equipment in the technical scheme comprises a hydraulic station 8 and a control cabinet 9; the hydraulic station 8 and the control cabinet 9 are placed on the ground.
The hydraulic station 8 is used for providing cooling liquid for the main shaft and the loading unit, and is provided with a flow control valve which can control the flow of hydraulic oil; and hydraulic oil is provided for the broach mechanism, the hydraulic adjusting and controlling device and the like.
The control cabinet 9 realizes the functions of parameter acquisition and control of the whole reliability test system, and can display the running state of the test device in the display.
Compared with the prior art, the invention has the beneficial technical effects that:
1. aiming at three important factors of dynamic cutting force, cutting torque and oil pollution which influence the reliability of the electric spindle, the invention respectively designs the loading devices, and can simulate all loads suffered by the electric spindle in the actual cutting process more truly. The oil pollution is used as one of main operation conditions for simulating the electric spindle, and the method is a breakthrough of reliability tests of the electric spindle.
2. The whole electric spindle reliability test device can realize multi-degree-of-freedom transformation of piezoelectric ceramics in space, so that the stress of each direction in the actual machining process of the electric spindle is simulated, and the real working condition of the electric spindle is more accurately simulated.
3. In order to solve the problem that bearings in a loading unit are easily damaged due to overheating of the loading unit in the loading process, the invention designs a self-cooling loading unit, and the cooling pipe is embedded in the groove of the shell of the loading unit, so that the loading unit is effectively cooled and protected.
4. The adjustable electric main shaft holding clamp and the supporting device are designed to adapt to reliability tests of electric main shafts of different models and specifications, and the electric main shafts of different models and specifications can be mounted and held.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is an isometric view of an electric spindle reliability test simulation loading device according to the present invention;
FIG. 2 is an isometric view of a support disk according to the present invention;
FIG. 3 is an isometric view of a piezoceramic loading apparatus according to the present invention;
FIG. 4 is a schematic view of the assembly of the loading rail and arcuate chute of the present invention;
FIG. 5 is a cross-sectional view of the loading rail and arcuate chute assembly of the present invention;
FIG. 6 is a schematic view of the assembly of the arcuate chute and loading arm of the present invention;
FIG. 7 is a schematic cross-sectional view of the arcuate chute and loading arm assembly of the present invention;
FIG. 8 is an isometric view of a loading arm according to the present invention;
FIG. 9 is an isometric view of a dynamometer loading device according to the present invention;
FIG. 10 is an exploded view of a loading unit according to the present invention;
fig. 11 is an exploded view of the oil loading device according to the present invention;
FIG. 12 is an isometric view of an electric spindle loading apparatus according to the present invention;
in the figure:
1. piezoelectric ceramic loading device, 2 dynamometer loading device, 3 diaphragm coupling, 4 supporting disk, 5 loading unit, 6 oil stain loading device, 7 electric spindle loading device, 8 hydraulic station, 9 control cabinet, 10 ground flat iron, 11 rotating disk, 12 disk driving motor, 13 disk base, 14 main protection body, 15 loading guide rail, 16 arc slideway, 17 slide block A, 18 slide block B, 19 arc rack A, 20 gear A, 21 loading arm, 22 slide block C, 23 slide block D, 24 arc rack B, 25 gear B, 26 piezoelectric ceramic, 27 gear support, 28 hydraulic rod, 29 loading arm joint I, 30 loading arm joint II, 31 loading arm motor shaft A, 32 loading arm joint III-A, 33 loading arm motor shaft B, 34 loading arm motor shaft C, 35. loading arm joints III-B, 36, loading arm motor shafts D, 37, loading arm motor shafts E, 38, piezoelectric ceramic clasps A, 39, piezoelectric ceramic clasps B, 40, a dynamometer, 41, a guide post, 42, a dynamometer connecting plate, 43, a lead screw guide rail, 44, a dynamometer loading device bottom plate, 45, a simulation tool handle, 46, a loading unit upper cover, 47, a bearing, 48, a sleeve, 49, a loading unit lower cover, 50, a loading unit shell, 51, a cooling pipe, 52, a pit, 53, a protective cover, 54, an oil immersion box body I, 55, a sealing ring, 56, a spray head, 57, an oil injection pipe, 58, an oil immersion box body II, 59, a locking bolt, 60, a fixing ring I, 61, a fixing ring II, 62, an electric spindle loading device shell, 63, a spindle clasping clamp adjusting mechanism, 64, a clasping clamp plate, 65, an electric spindle, 66. V-shaped supporting structure, 67, a moving sliding plate, 68. and the sliding blocks E, 69, the linear slide way and 70, the bottom plate of the electric spindle loading device.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention relates to a simulation loading device for an electric spindle reliability test, which consists of a main support body, a stress loading device and auxiliary equipment.
The main support comprises a support disc 4 and a ground plane 10.
The stress loading device comprises a piezoelectric ceramic loading device 1, a dynamometer loading device 2, a diaphragm coupling 3, a loading unit 5, an oil stain loading device 6 and an electric spindle loading device 7.
The auxiliary equipment comprises a hydraulic station 8 and a control cabinet 9.
Referring to fig. 1, a supporting disc 4 is fixed on a ground flat iron 10, a piezoelectric ceramic loading device 1, a dynamometer loading device 2 and an electric spindle loading device 7 are fixed on the supporting disc 4, a diaphragm coupling 3 and a loading unit 5 are installed between the dynamometer loading device 2 and the electric spindle loading device 7, an oil stain loading device 6 is installed on the electric spindle loading device 7, and a hydraulic station 8 and a control cabinet 9 are placed on the ground. The main components function as follows:
the supporting disc 4 realizes that the whole electric spindle reliability test device rotates around a disc shaft in a horizontal plane, and the piezoelectric ceramic loading device 1 realizes the lifting in space and the rotation with multiple degrees of freedom, so that different working conditions, namely stress conditions at different angles, in the actual machining process of the electric spindle are simulated;
the piezoelectric ceramic loading device 1 realizes the analog loading of the dynamic cutting force of the electric spindle through the loading unit 5;
the dynamometer loading device 2 is used for simulating and loading the cutting torque of the electric spindle;
the diaphragm coupling 3 realizes the connection between the loading unit and the dynamometer loading device 2;
the oil contamination loading device 6 is used for simulating and loading oil contamination suffered by the electric spindle under the real working condition;
the electric spindle loading device 7 is used for fixedly mounting electric spindles of different models and specifications and has a position adjusting function;
the hydraulic station 8 is a power source for assisting the main shaft and the loading unit to act, is provided with a flow control valve and can control the flow of hydraulic oil; and hydraulic oil is provided for the broach mechanism, the hydraulic adjusting and controlling device and the like.
The control cabinet 9 realizes the parameter acquisition and control functions of the whole reliability test system, and can display the running condition of the test device in the display.
Referring to fig. 2, the support disk 4 includes a rotating disk 11, a disk driving motor 12, and a disk base 13. The disc driving motor 12 is fixed on the disc base 13, and the disc driving motor 12 drives the rotating disc 11 to rotate around the motor shaft, so that the loading device rotates in the horizontal plane.
Referring to fig. 3, 4, 5, 6, and 7, the piezoceramic loading apparatus 1 includes a main protection body 14, a loading rail 15, an arc-shaped slide way 16, a slider a17, a slider B18, an arc-shaped rack a19, a gear a20, a loading arm 21, a slider C22, a slider D23, an arc-shaped rack B24, a gear B25, and piezoceramics 26.
Referring to fig. 3, 4 and 5, the loading guide 15 is fixed on the top of the main protection body 14 by bolts, and the lower arc surface of the loading guide 15 is provided with an arc-shaped rack a 19; the gear A20 is arranged on the arc-shaped slideway 16 and is meshed with the arc-shaped rack A19; the gear A20 rotates on the arc-shaped rack A19, so that the arc-shaped slide way 16 is driven to slide on the loading guide rail 15 through the slide block A17 and the slide block B18.
Referring to fig. 3, 6 and 7, the arc-shaped rack B24 is arranged on the lower arc surface of the arc-shaped slideway 16, and the gear B25 is installed on the loading arm 21 and meshed with the arc-shaped rack B24; the gear B25 rotates on the arc-shaped rack B24, so that the loading arm 21 is driven to slide on the arc-shaped slide way 16 through the slide block C22 and the slide block D23.
Referring to fig. 8, the loading arm 21 includes a gear support 27, a hydraulic rod 28, a loading arm joint i 29, a loading arm joint ii 30, a loading arm motor shaft a31, a loading arm joint iii-a 32, a loading arm motor shaft B33, a loading arm motor shaft C34, a loading arm joint iii-B35, a loading arm motor shaft D36, a loading arm motor shaft E37, a piezoceramic clamp a38, and a piezoceramic clamp B39. The loading arm 21 slides on the arc-shaped slide way 16 through a gear B25 on the gear support 27; the hydraulic rod 28 is positioned above the loading arm joint I29 and drives the loading arm joint I29 to move up and down in a hydraulic control mode; the loading arm joint I29 is connected with the loading arm joint II 30 through a loading arm motor shaft A31, and the loading arm motor shaft A31 drives the loading arm joint II 30 to rotate around a shaft. The loading arm joint I29 is connected with a loading arm joint III-A32 and a loading arm joint III-B35 through a loading arm motor shaft B33 and a loading arm motor shaft C34 on two sides, and the loading arm motor shaft B33 and the loading arm motor shaft C34 respectively drive the loading arm joint III-A32 and the loading arm joint III-B35 to rotate around a shaft; the loading arm joint III-A32 is connected with a piezoelectric ceramic holding clamp A38 through a loading arm motor shaft D36, the loading arm joint III-B35 is connected with a piezoelectric ceramic holding clamp B39 through a loading arm motor shaft E37, and the loading arm joint III-A32 and the loading arm joint III-B35 respectively drive the piezoelectric ceramic holding clamp A38 and the piezoelectric ceramic holding clamp B39 to rotate around a shaft, so that the release and the clamping of the piezoelectric ceramic 26 and the multi-angle transformation of the loading arm 21 on the space are realized.
Referring to fig. 2, 3, 4, 5, 6, 7 and 8, the bottom of the main protection body 14 of the piezoelectric ceramic loading device 1 is fixed on the supporting disk 4 through anchor bolts, the whole piezoelectric ceramic loading device 1 horizontally rotates through the rotating disk 4, the arc-shaped slideway 16 slides on the loading guide rail 15, the loading arm 21 slides on the arc-shaped slideway 16, the loading arm 21 moves up and down and rotates through each joint, and the spatial multi-degree-of-freedom conversion of the piezoelectric ceramic 26 is realized, so that the stress in different directions borne in the cutting process of the electric spindle is simulated.
Referring to fig. 9, the dynamometer loading apparatus 2 includes a dynamometer 40, a guide post 41, a dynamometer connecting plate 42, a lead screw guide rail 43, and a dynamometer loading apparatus base plate 44. The dynamometer 40 is fixed on a dynamometer connecting plate 42 through a fastening bolt, and the bottom surfaces of the four guide posts 41 are fixed on a dynamometer loading device base plate 44 and connected with the dynamometer connecting plate 42. The upper end of the screw guide rail 43 is fixed on the dynamometer connecting plate 42, the lower end of the screw guide rail is fixed on the dynamometer loading device bottom plate 44, and the dynamometer connecting plate 42 is driven to move up and down through screw transmission, so that the position of the dynamometer is adjusted.
Referring to fig. 10, the loading unit 5 includes a dummy tool shank 45, a loading unit upper cover 46, a bearing 47, a sleeve 48, a loading unit lower cover 49, a loading unit housing 50, and a cooling pipe 51. A loading unit upper cover 46, a bearing 47, a sleeve 48 and a loading unit lower cover 49 are sequentially assembled at one end of the simulation tool shank 45, and a loading unit shell 50 is sleeved outside; the cooling pipe 51 is nested in a recess inside the loading unit housing 50, thereby achieving cooling of the entire loading unit 5. .
Referring to fig. 1 and 10, the piezoceramic loading device 1 loads the simulated cutting force through the pits 52 on the loading unit 5.
Referring to fig. 11, the oil contamination loading device 6 includes a protective cover 53, an oil immersion box body i 54, a seal ring 55, a nozzle 56, an oil spray pipe 57, an oil immersion box body ii 58, a locking bolt 59, a fixing ring i 60, and a fixing ring ii 61. In the protective cover 53, oily box body I54 and oily box body II 58 detain mutually, are fixed by solid fixed ring I60 and solid fixed ring II 61 to through locking bolt 59 with solid fixed ring I60 and solid fixed ring II 61 locking. Sealing rings 55 are installed on the inner sides of the oil immersion box body I54 and the oil immersion box body II 58, and good sealing performance is achieved after the oil immersion box body I54 and the oil immersion box body II 58 are buckled. An oil injection hole is formed in the oil immersion box body II 58, and colored oil liquid pollution mixed liquid is injected into the oil immersion box body formed by the oil immersion box body I54 and the oil immersion box body II 58 through the oil injection hole to simulate the oil liquid pollution condition in the spindle cutting process, so that the sealing performance of the joint between the electric spindle shell and the bearing end cover is detected; four shower nozzles 56 are fixed respectively in four oil spout pipe 57 one ends, and four two liang a set of oil spout pipe 57 other ends are located on oily box body I54 and oily box body II 58, and the fluid pollution who takes the colour is mixed liquid through oil filler point pressure boost injection, makes to mix the liquid and spout through four shower nozzles 56, and the fluid that receives pollutes among the simulation main shaft cutting process to detect the leakproofness in gap between electric main shaft axle core and the end cover. The monitoring of the oil pollution degree of the electric spindle is realized by monitoring the condition that the mixed liquid is polluted by colored oil in the protective cover 53 and the electric spindle 65.
Referring to fig. 12, the electric spindle loading device 7 includes an electric spindle loading device housing 62, a spindle clasping adjusting mechanism 63, a clasping plate 64, an electric spindle 65, a V-shaped supporting structure 66, a movable sliding plate 67, a sliding block E68, a linear slideway 69, and an electric spindle loading device bottom plate 70. The electric spindle loading device shell 62 is connected with a clamping plate 64 through a spindle clamping adjusting mechanism 63; the height of the main shaft clamping adjusting mechanism 63 is adjusted through hydraulic pressure, so that the clamping plate 64 can move up and down to be attached to the electric main shaft 65, and the mounting and testing of electric main shafts of different models are adapted; the bottom of the electric spindle loading device shell 62 is fixed on the movable sliding plate 67 through foundation bolts, four V-shaped supporting structures 66 are aligned in pairs and fixed on the movable sliding plate 67 through fastening bolts, support the electric spindles 65 together, form different-angle supports through hydraulic adjustment, and are matched with the clamping plates 64 to jointly realize clamping of multiple types of electric spindles; the linear slideway 69 is fixed on the electric spindle loading device bottom plate 70 through a bolt, and slides through the slide block E68 to drive the movable slide plate 67 to slide, so that the whole electric spindle loading device 7 moves back and forth, and the installation and feeding movement of the electric spindle is facilitated.
The examples set forth herein are presented to enable those skilled in the art to make and use the invention. The present invention is only an optimized example or a better specific solution, and if the related technical personnel keeps the basic technical solution of the present invention, the equivalent structural changes or various modifications without creative efforts are within the protection scope of the present invention.
Claims (10)
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| CN202010117793.0A CN111141515B (en) | 2020-02-25 | 2020-02-25 | A simulation loading device for electric spindle reliability test |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113970676A (en) * | 2021-09-30 | 2022-01-25 | 西安交通大学 | Heat source simulation device under space airborne environment |
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| CN114942134A (en) * | 2022-05-23 | 2022-08-26 | 南京理工大学 | A circular arc guide rail running-in and loading test bench |
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| CN112504667A (en) * | 2020-12-22 | 2021-03-16 | 吉林大学 | Reliability test bed for cutter spindle system of gear shaper |
| CN113970676A (en) * | 2021-09-30 | 2022-01-25 | 西安交通大学 | Heat source simulation device under space airborne environment |
| CN114720099A (en) * | 2021-12-02 | 2022-07-08 | 中国农业大学 | Full-working-condition single-rod loaded electric spindle reliability test device |
| CN114942134A (en) * | 2022-05-23 | 2022-08-26 | 南京理工大学 | A circular arc guide rail running-in and loading test bench |
| CN116380013A (en) * | 2023-04-04 | 2023-07-04 | 陕西卓信工程检测有限公司 | An intelligent monitoring device and method for monitoring the stability of tunnel surrounding rock based on free network |
| CN117168811A (en) * | 2023-09-06 | 2023-12-05 | 沈阳建筑大学 | An experimental device for rolling bearing lubrication and testing |
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