CN207487971U - A kind of electro spindle-bearing characteristics experimental rig - Google Patents

A kind of electro spindle-bearing characteristics experimental rig Download PDF

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Publication number
CN207487971U
CN207487971U CN201721690615.7U CN201721690615U CN207487971U CN 207487971 U CN207487971 U CN 207487971U CN 201721690615 U CN201721690615 U CN 201721690615U CN 207487971 U CN207487971 U CN 207487971U
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bearing
main shaft
gland
sensor
shafting
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CN201721690615.7U
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王红军
左云波
刘国庆
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Beijing Information Science and Technology University
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Beijing Information Science and Technology University
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Abstract

The utility model is related to a kind of electric mainshaft bearing characteristic test apparatus, and including motor, the output shaft of motor is connect by shaft coupling with main shaft, and main shaft is arranged on spindle carrier, and spindle carrier is installed on pedestal;Shaft coupling is connect by gland with spindle carrier;Main shaft both ends and the junction of spindle carrier are both provided with measured bearing, charging assembly are respectively arranged on two measured bearings, and two measured bearing back-to-back types are installed;Charging assembly is provided in the middle part of main shaft, test device is additionally provided on main shaft, measured bearing and charging assembly, the main shaft detected and measured bearing status information are transmitted in host computer by test device;Test device is made of vibrating sensor, temperature sensor, speed probe, pressure sensor, force snesor and changing sensor.The utility model can reduce security risk caused by the deflection of main shaft, at the same promoted the rigidity of entire shafting also can, and can effectively draw up the actual conditions of electric mainshaft bearing system.

Description

A kind of electro spindle-bearing characteristics experimental rig
Technical field
The utility model is related to a kind of bearing testing device, especially with regard to a kind of electro spindle-bearing characteristics experimental rig.
Background technology
Main shaft is the pith of lathe, its quality decides the overall performance of lathe.With the development of science and technology, numerical control Lathe also becomes more quick, and more efficiently, precision is also higher and higher, this requires the higher rotating speed of electro spindle needs and just It spends to match it, moreover, lathe requires that a little mainly accurate start and stop, lifting speed etc. can also be completed in a short time more simultaneously For harsh ability.Therefore, the promotion of the stability of electro spindle and reliability just becomes the most important thing of current Machine Tool Industry, And the design of bearing just becomes the important ring for realizing electro spindle high stability high reliability, and because of the material of bearing, type, Size fully affects many factors for being related to lathe working efficiency such as the rotating speed of main shaft, rigidity, can also influence lathe Stability and machining accuracy, the design of some failures result even in the reduced lifetime of lathe, therefore, in the stage of design bearing Just it must be particularly noted that.
What present high-speed electric main shaft was substantially all assembling is angular contact ball bearing, good performance from last century always It uses till today, but this bearing is applied on the high electro spindle of precision and rotating speed requirement, find that electricity is main through overtesting At runtime, the centrifugal force and gyroscopic couple that this steel bearings generate can seriously increase contact of the bearing outer ring with bracket to axis Stress, this means that the rising of frictional force, while frictional heat causes the temperature of whole system also to steeply rise, this can cause The working environment of whole system becomes abnormal severe, and working efficiency can also decline.And ceramic ball bearing is as a kind of brand-new material Bearing, it the advantages of have and allow rotating speed high, temperature rise it is slow while non-conductive non-magnetic, be that the ideal of steel ball bearing is replaced Dai Pin is used in it in electro spindle, not only ensure that rigidity, while can also break through electro spindle when assembling steel ball bearing originally Rotating speed is critical.
For how to know whether bearing can effectively improve the working efficiency of lathe this problem, most effective method is exactly Bearing test is carried out to bearing, the service life of measured bearing and performance quality can be understood that by bearing test.Bearing exists It must just arrange to carry out bearing test during design, because without bearing test, the effect of bearing is just unknown.At present on the market Rolling bearing test table cannot completely simulate working environment and the real work of the electro spindle for being equipped with ceramic ball bearing Situation.
In addition to this, the electro spindle carried out at present-bearing testing experiment is typically all what is carried out under electro spindle zero load, though Right this method is simple to operation, but it is there is also drawback, for example is difficult the actual working environment of reflection electro spindle, also can not The axial load and radial load that the practical electro spindle of simulation is received in the process of running, therefore the convincingness of its numerical value is not high. Therefore, it designs and produces a kind of testing stand that can simulate the actual condition of electro spindle under normal circumstances, and can Cooperation test software, which carries out detailed data acquisition and accurate data analysis, just becomes increasingly important.
Invention content
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of electro spindle-bearing characteristics experimental rig, can subtract Security risk caused by the deflection of few main shaft, at the same promoted the rigidity of entire shafting also can, and can effectively draw up electric master The actual conditions of shaft-bearing system.
To achieve the above object, the utility model takes following technical scheme:Electro spindle-bearing characteristics experimental rig, It is characterized in that:It includes motor, shaft coupling, main shaft, spindle carrier, pedestal, gland, measured bearing, charging assembly, test device And host computer;The motor and spindle carrier are all disposed on the pedestal;The output shaft of the motor passes through the shaft coupling It is connect with the main shaft, the main shaft is arranged on the spindle carrier, and the spindle carrier is installed on the pedestal;It is described Shaft coupling is connect by the gland with the spindle carrier;The main shaft both ends and the junction of the spindle carrier are all set There is the measured bearing, the charging assembly is respectively arranged on two measured bearings, and two measured bearings are back-to-back Formula is installed;The charging assembly is provided in the middle part of the main shaft, is also set on the main shaft, measured bearing and charging assembly The test device is equipped with, the main shaft detected and measured bearing status information are transmitted on described by the test device In the machine of position;The test device is by vibrating sensor, temperature sensor, speed probe, pressure sensor, force snesor and shape Become sensor to form.
Further, the vibrating sensor is arranged on the main shaft and measured bearing, and the temperature sensor is arranged on At the end cap of the measured bearing, the speed probe is arranged on the tail portion of the main shaft;The pressure sensor, power sensing Device and changing sensor are arranged on the charging assembly.
Further, the speed probe uses magnetoelectric sensor.
Further, the charging assembly includes shafting gland, piston, spacer, end cap, rubber pad and oil inlet;The axis It is that gland is arranged on the main shaft or the measured bearing, the piston is provided with, and described in the middle part of the shafting gland The spacer is provided between piston and the shafting gland;The shafting gland top is provided with the end cap, in institute It states and is provided with the rubber pad between end cap and the shafting gland;On the end cap, in the shafting gland side Portion is provided with a groove;End cap side end set has the oil inlet.
Further, another upper lateral part of the end cap is provided with bleeder screw.
The utility model has the following advantages due to taking above technical scheme:1st, the bearing that the utility model uses Measured bearing is mounted on the both ends of main shaft by characteristic test apparatus, and radial load and axial load are all load by charging assembly Lotus is applied on bearing, and this structure can make up cantilevered deficiency, reduces security risk caused by the deflection of main shaft, together When entire shafting rigidity can also be promoted, and can effectively draw up the actual conditions of electric mainshaft bearing system.2nd, this practicality is new Type is provided with spacer on charging assembly, can reduce the foreseeable friction as caused by reciprocating motion of the pistons.3rd, this practicality The end cap top of novel charging assembly is provided with bleeder screw, can exclude installation or removal during run into air, side Just it is vented.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model;
Fig. 2 is the charging assembly structure diagram of the utility model.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the utility model provides a kind of electro spindle-bearing characteristics experimental rig, including motor 1, shaft coupling Device 2, main shaft 3, spindle carrier 4, pedestal 5, gland 6, measured bearing 7, charging assembly 8, test device and host computer.Wherein, it is electric Machine 1, spindle carrier 4 are all disposed on pedestal 5.The output shaft of motor 1 is connect by shaft coupling 2 with main shaft 3, and main shaft 3 is arranged on On spindle carrier 4, spindle carrier 4 is installed on pedestal 5;Shaft coupling 2 is connect by gland 6 with spindle carrier 4.3 both ends of main shaft Measured bearing 7 is both provided with the junction of spindle carrier 4, charging assembly 8, and two quilts are respectively arranged on two measured bearings 7 Survey the installation of 7 back-to-back type of bearing so that the axial load that charging assembly 8 applies can be preferably applied on measured bearing 7;Position Charging assembly 8 is also equipped in 3 middle part of main shaft, radial load and pretightning force are applied to main shaft 3 by charging assembly 8.Main shaft 3, It is additionally provided with test device on measured bearing 7 and charging assembly 8, test device is by 7 state of the main shaft 3 detected and measured bearing Information is transmitted in host computer.
In above-described embodiment, test device is by vibrating sensor, temperature sensor, speed probe, pressure sensor, power Sensor and changing sensor are formed.Wherein, vibrating sensor is arranged on main shaft 3 and measured bearing 7, corresponding for acquiring Vibration signal;Temperature sensor is arranged at the end cap of measured bearing 7, for detecting the temperature of measured bearing 7;Speed probe It is arranged on the tail portion of main shaft 3;Pressure sensor, force snesor and changing sensor are arranged on charging assembly 8, for acquiring quilt Survey radial load and axial load on bearing 7 and main shaft 3.Wherein, speed probe uses magnetoelectric sensor.
In the various embodiments described above, as shown in Fig. 2, charging assembly 8 includes shafting gland 81, piston 82, spacer 83, end cap 84th, rubber pad 85, oil inlet 86 and bleeder screw 87.Shafting gland 81 is arranged on main shaft 3 or measured bearing 7, shafting gland 81 middle part be provided with piston 82, and spacer 83 is provided between piston 82 and shafting gland 81, can reduce it is foreseeable by Piston 82 moves back and forth caused friction.81 top of shafting gland is provided with end cap 84, in end cap 84 and shafting gland Rubber pad 85 is provided between 81.On end cap 84,81 1 middle side part of shafting gland is provided with a groove, as piston 82 Active reservations space;84 side end set of end cap has oil inlet 86, by oil inlet 86 by hydraulic oil drive piston 82 into Row moves back and forth, and 84 another upper lateral part of end cap is provided with bleeder screw 87, in order to exclude to run during installation or removal into Air, easy to exhaust.In use, replacing oil cylinder by end cap 84 and shafting gland 81, hydraulic oil enters oil cylinder through oil inlet 86, into And piston 82 is driven to move back and forth, and the driving is completed indirectly, because oil pressure needs to drive piston again by rubber pad 85.
In conclusion the symmetrical shafting structure that the utility model uses is exactly two that measured bearing 7 is mounted on to main shaft 3 End, radial load and axial load are all that load is applied on measured bearing 7 by charging assembly 8, but radial load with Axial load is different, and radial load is transferred loads to by main shaft 3 positioned at main shaft 3 after load is applied to bearing top circle On the measured bearing 7 of both sides, this structure can make up cantilevered deficiency, and it is hidden to reduce safety caused by the deflection of main shaft Suffer from, while the rigidity of entire shafting can also be promoted, if more kinds of different bearings can be competent at using longer major axis size, The bearing test of different support distances, achieves many things at one stroke.
The various embodiments described above are merely to illustrate the utility model, and structure and size, installation position and the shape of each component are all Can be varied from, on the basis of technical solutions of the utility model, it is all according to the utility model principle to individual part into Capable improvement and equivalents should not be excluded except the scope of protection of the utility model.

Claims (5)

1. a kind of electro spindle-bearing characteristics experimental rig, it is characterised in that:It include motor, shaft coupling, main shaft, spindle carrier, Pedestal, gland, measured bearing, charging assembly, test device and host computer;The motor and spindle carrier are all disposed within the bottom On seat;The output shaft of the motor is connect by the shaft coupling with the main shaft, and the main shaft is arranged on the spindle carrier On, the spindle carrier is installed on the pedestal;The shaft coupling is connect by the gland with the spindle carrier;It is described Main shaft both ends and the junction of the spindle carrier are both provided with the measured bearing, are respectively arranged on two measured bearings The charging assembly, and the two measured bearing back-to-back type installations;The charging assembly is provided in the middle part of the main shaft, The test device, the institute that the test device will detect are additionally provided on the main shaft, measured bearing and charging assembly It states main shaft and measured bearing status information is transmitted in the host computer;
The test device is by vibrating sensor, temperature sensor, speed probe, pressure sensor, force snesor and deformation Sensor is formed.
2. a kind of electro spindle-bearing characteristics experimental rig as described in claim 1, it is characterised in that:The vibrating sensor It is arranged on the main shaft and measured bearing, the temperature sensor is arranged at the end cap of the measured bearing, the rotating speed Sensor is arranged on the tail portion of the main shaft;The pressure sensor, force snesor and changing sensor are arranged on the loading On component.
3. a kind of electro spindle-bearing characteristics experimental rig as claimed in claim 2, it is characterised in that:The speed probe Using magnetoelectric sensor.
4. a kind of electro spindle-bearing characteristics experimental rig as described in any one of claims 1 to 3, it is characterised in that:It is described to add It carries component and includes shafting gland, piston, spacer, end cap, rubber pad and oil inlet;The shafting gland be arranged on the main shaft or On the measured bearing, the piston is provided with, and between the piston and the shafting gland in the middle part of the shafting gland It is provided with the spacer;The shafting gland top is provided with the end cap, the end cap and the shafting gland it Between be provided with the rubber pad;On the end cap, one middle side part of shafting gland is provided with a groove;The end cap Side end set has the oil inlet.
5. a kind of electro spindle-bearing characteristics experimental rig as claimed in claim 4, it is characterised in that:The end cap opposite side Top is provided with bleeder screw.
CN201721690615.7U 2017-12-07 2017-12-07 A kind of electro spindle-bearing characteristics experimental rig Active CN207487971U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721690615.7U CN207487971U (en) 2017-12-07 2017-12-07 A kind of electro spindle-bearing characteristics experimental rig

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108918128A (en) * 2018-08-02 2018-11-30 南京梵科智能科技有限公司 A kind of intelligent apparatus for rotating machinery progress fault location
CN108918129A (en) * 2018-08-02 2018-11-30 南京梵科智能科技有限公司 A kind of intelligent apparatus of pair of slewing implementing monitoring
CN109187026A (en) * 2018-11-13 2019-01-11 哈尔滨理工大学 High-speed high-precision electric mainshaft bearing is comprehensive performance test bed
CN109187014A (en) * 2018-08-08 2019-01-11 东风汽车集团有限公司 A kind of hub bearing dynamic friction torque is test bed
CN109211551A (en) * 2018-09-14 2019-01-15 南京梵科智能科技有限公司 A kind of trouble-shooter for rotating machinery
CN109696286A (en) * 2019-03-13 2019-04-30 哈尔滨理工大学 A kind of high-speed electric main shaft dynamically load vibration measurement device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108918128A (en) * 2018-08-02 2018-11-30 南京梵科智能科技有限公司 A kind of intelligent apparatus for rotating machinery progress fault location
CN108918129A (en) * 2018-08-02 2018-11-30 南京梵科智能科技有限公司 A kind of intelligent apparatus of pair of slewing implementing monitoring
CN109187014A (en) * 2018-08-08 2019-01-11 东风汽车集团有限公司 A kind of hub bearing dynamic friction torque is test bed
CN109187014B (en) * 2018-08-08 2020-02-07 东风汽车集团有限公司 Dynamic friction torque test bench for hub bearing
CN109211551A (en) * 2018-09-14 2019-01-15 南京梵科智能科技有限公司 A kind of trouble-shooter for rotating machinery
CN109187026A (en) * 2018-11-13 2019-01-11 哈尔滨理工大学 High-speed high-precision electric mainshaft bearing is comprehensive performance test bed
CN109696286A (en) * 2019-03-13 2019-04-30 哈尔滨理工大学 A kind of high-speed electric main shaft dynamically load vibration measurement device

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