CN103868683A - Motorized spindle rigidity test device - Google Patents
Motorized spindle rigidity test device Download PDFInfo
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- CN103868683A CN103868683A CN201410088140.9A CN201410088140A CN103868683A CN 103868683 A CN103868683 A CN 103868683A CN 201410088140 A CN201410088140 A CN 201410088140A CN 103868683 A CN103868683 A CN 103868683A
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Abstract
The invention discloses a motorized spindle rigidity test device which comprises an electromagnetism loading device and a circuit control module, wherein the electromagnetism loading device comprises a magnetic conductance ring which is coaxially and fixedly connected with a motorized spindle and an excitation device which is sleeved outside the magnetic conductance ring; the circuit control module is used for controlling a circuit in the excitation device. According to the motorized spindle rigidity test device, the dynamic loading to the high-speed motorized spindle is realized; relative o a static test and a no-load test, the actual working state of the motorized spindle is more accurately simulated by the motorized spindle rigidity test device, a constructive opinion is proposed for the design and the optimization of the motorized spindle, parts of the device are easy to design and manufacture in a serialization and standardization way, the structure of the device is simple and compact, and the maintenance and the assembly are easy.
Description
Technical field
The present invention relates to a kind of proving installation, specifically a kind of electric main axis stiffness proving installation.
Background technology
High-speed electric main shaft is as the core component in high-speed processing machine tool, and its dynamic property is the emphasis that designer is concerned about always, directly has influence on machining precision and the production efficiency of lathe.But due to high-speed electric main shaft design feature, it is carried out to on-line testing and always be difficult point, the research of the dynamic property to electric main shaft is mainly to build emulation, finite element analysis as main at present, and dynamic testing method also focuses mostly on and tests in no-load running.In engineering, commonly use hammering method, torque rotational speed meter method, utilize cutting force to load as load with after utilizing the kind of drive to slow down.But these load modes are contact and load, unstable, and usually need complicated assistive device, cost is high, wear and tear in machines is serious, on the other hand, studies tested high-speed electric main shaft, need a kind of dynamic loading device that can simulate tested high-speed electric main shaft real work situation, on this basis electric main shaft is tested, tested.Domestic have a simple tested high-speed electric main shaft testing table of some functions, this testing table can only carry out the test under no-load condition to electric main shaft, or use hydraulic system or motor to carry out static loading to electric main shaft, the force-bearing situation of analog electrical main shaft, even if but like this, also there is a big difference with the true stressing conditions of tested high-speed electric main shaft.Under real working condition, the dynamic cutting force indirectly-acting that cutter is subject to is on electric main shaft, cutting force also has certain frequency, main shaft is also subject to torsional interaction simultaneously, this Performance And Reliability to tested high-speed electric main shaft has a significant impact, and existing charger all can not be simulated the impact of dynamic high frequency cutting force on electric main shaft.Therefore, be badly in need of a kind of novel dynamic loading device for high-speed motorized of invention, stressed under analog main shaft real working condition, to meet the research of main shaft performance and reliability.
Therefore,, for overcoming the above problems, the more electric main axis stiffness proving installation of the actual working state of analog electrical main shaft need to have been proposed.
Summary of the invention
In view of this, the object of the invention is to overcome defect of the prior art, a kind of electric main axis stiffness proving installation of actual working state of the main shaft of analog electrical is more accurately provided.Electric main axis stiffness proving installation of the present invention comprises electromagnetic loading device and circuit control module, electromagnetic loading device comprises the magnetic guiding loop that is coaxially fixedly connected with electric main shaft and is sheathed on the excitation unit outside magnetic guiding loop, and circuit control module is for controlling the circuit of excitation unit;
Further, described excitation unit comprise unshakable in one's determination and be wound in iron core for the coil of magnetic flux is radially provided for it along magnetic guiding loop, iron core comprises with the outer ring of the coaxial setting of magnetic guiding loop and is fixedly connected on the integrated iron teeth pair of outer ring inwall and outer ring, iron teeth is to comprising that two along the unshakable in one's determination iron teeths that radially arrange, and the circuit flow that coil is wound in coil on two iron teeths and on two iron teeths is successively on the contrary;
Further, described iron teeth is to circumferentially evenly arranging multipair along iron core;
Further, described circuit control module comprises computing machine, digital to analog converter, power supply and power amplifier, Computer signal output terminal is connected with power amplifier signal input part by digital to analog converter, power amplifier output terminal is electrically connected on described coil, and power supply is electrically connected on power amplifier and is power amplifier power supply;
Further, described iron teeth is to being circumferentially evenly provided with 4 pairs along iron core, and power amplifier arranges 4 output terminals accordingly;
Further, described excitation unit also comprises the governor motion being fixedly connected with downside unshakable in one's determination;
Further, described governor motion comprises pedestal and regulates platform, regulate platform upper end to be fixedly connected with outer ring unshakable in one's determination by support, regulate platform lower end to be slidably connected by lead screw transmission mechanism and pedestal, lead screw transmission mechanism comprises the screw mandrel being fixedly connected with pedestal and is located at the threaded hole matching with screw mandrel on adjusting platform;
Further, described lead-screw drive mechanism is the cross sliding table structure of utilizing the leading screw control slide unit of two right-angled intersections to move; Two leading screws are respectively along stalk to being provided with adjusting knob with horizontal radial setting and two leading screw one end;
Further, described iron core is made by ingot iron.
The invention has the beneficial effects as follows: electric main axis stiffness proving installation of the present invention, can realize high-speed electric main shaft dynamic load, with respect to static experiment and no-load test, the electric main axis stiffness proving installation of the present invention actual working state of analog electrical main shaft more accurately, for the design and optimization of electric main shaft proposes constructive suggestions, simultaneously apparatus parts be easy to seriation and standardizedly manufacture and design, apparatus structure is simply compact, is easy to I& M.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the structural representation of circuit control module.
Embodiment
Fig. 1 is structural representation of the present invention, the right view that Fig. 2 is Fig. 1, the structural representation that Fig. 3 is circuit control module.As shown in the figure, electric main shaft 3 device for testing stiffness in the present embodiment, comprise electromagnetic loading device and circuit control module, electromagnetic loading device comprises the magnetic guiding loop 6 being coaxially fixedly connected with electric main shaft 3 and is sheathed on the excitation unit outside magnetic guiding loop 6, and circuit control module is for controlling the circuit of excitation unit.
In the present embodiment, described excitation unit comprise unshakable in one's determination 4 and be wound in iron core for the coil 5 of magnetic flux is radially provided for it along magnetic guiding loop 6, unshakable in one's determination 4 comprise with the outer ring 9 of the coaxial setting of magnetic guiding loop 6 be fixedly connected on the integrated iron teeth of outer ring 9 inwalls and outer ring 9 to 10, iron teeth comprises that to 10 two along unshakable in one's determination 4 iron teeths that radially arrange, the circuit flow that coil 5 is wound in coil 5 on two iron teeths and on two iron teeths is successively on the contrary, unshakable in one's determination 4 are made up of soft magnetic material, at iron teeth place, the clockwise coil 5 around upper reservation number, and by the coil 5 on two iron teeths according to the rules mode couple together, make its current opposite in direction, 5 surplus next input ends of two coils and an output terminal on every a pair of tooth.Put magnetic guiding loop 6 into 4 middle parts unshakable in one's determination, between iron core 4 and magnetic guiding loop 6, leave predetermined gap, when coil 5 is switched on, iron core 4, magnetic guiding loop 6 and preset clearance form closed magnetic circuit, produce electromagnetic force, thereby realize the dynamic load to electric main shaft 3.
In the present embodiment, described iron teeth circumferentially evenly arranges multipair along unshakable in one's determination 4 to 10, multipair iron teeth loads electric main shaft 3 10 electromagnetic forces that can realize multi-signal generation simultaneously, the load being subject in analog electrical main shaft 3 work more really, thus better test out its performance.
In the present embodiment, described circuit control module comprises computing machine 14, digital to analog converter 13, power supply 12 and power amplifier 11, computing machine 14 signal output parts are connected with power amplifier 11 signal input parts by digital to analog converter 13, power amplifier 11 output terminals are electrically connected on described coil 5, power supply 12 is electrically connected on power amplifier 11 and powers for power amplifier 11, in the time of system works, load signal is write to computing machine 14, produce digital signal by application program analysis, by digital-to-analog conversion, and input coil 5 after amplifying via amplifier, thereby generation magnetic field, produce electromagnetic force, complete the dynamic load to high-speed electric main shaft 3.Power supply 12 can produce the superposed signal of pulse signal, step signal, sinusoidal signal, square-wave signal and any two kinds of signals.
In the present embodiment, described iron teeth is circumferentially evenly provided with 4 pairs, each 1 pair of horizontal direction left and right, each 1 pair up and down of vertical direction to 10 along unshakable in one's determination 4.Power amplifier 11 arranges 4 output terminals accordingly, and amplifier output is divided into 4 tunnels, is connected respectively with the leading-out terminal of 4 coils 5, and 4 coils 5 are independently controlled.
In the present embodiment, described excitation unit also comprises the governor motion being fixedly connected with 4 downsides unshakable in one's determination, governor motion is for regulating the relative position of iron core 4 and magnetic guiding loop 6, make the dead in line of 4 axis unshakable in one's determination and magnetic guiding loop 6, the end face of 4 end faces unshakable in one's determination and magnetic guiding loop 6 is overlapped, thereby make the gap of magnetic guiding loop 6 and unshakable in one's determination 4 even.
In the present embodiment, described governor motion comprises pedestal 1 and regulates platform 2, regulate platform 2 upper ends to be fixedly connected with 4 outer rings 9 unshakable in one's determination by support 7, regulate platform 2 lower ends to be slidably connected by lead screw transmission mechanism and pedestal 1, lead screw transmission mechanism comprises the screw mandrel being fixedly connected with pedestal 1 and is located at the threaded hole matching with screw mandrel on adjusting platform 2, adopt accurate lead screw transmission mechanism to regulate unshakable in one's determination 4 position, can control accurately unshakable in one's determination 4 position, make the gap of magnetic guiding loop 6 and unshakable in one's determination 4 even.
In the present embodiment, described lead-screw drive mechanism is the cross sliding table structure of utilizing the leading screw control slide unit of two right-angled intersections to move, two leading screws respectively along unshakable in one's determination 4 axially and horizontal radial setting and two leading screw one end be provided with adjusting knob 8, adopt cross sliding table structure can make iron core 4 there is the degree of freedom of both direction.Simultaneously, screw mandrel one end is set and is provided with horizontal direction adjusting knob 8 and vertical direction adjusting knob 8, can regulate by the axis to unshakable in one's determination 4 and the position of end face, make its axis and lead unshakable in one's determination 4 dead in line, the end face of its end face and magnetic guiding loop 6 is overlapped, thereby make the gap of magnetic guiding loop 6 and unshakable in one's determination 4 even, regulate behind position locked the lock-screw on screw mandrel.
In the present embodiment, described unshakable in one's determination 4 are made by ingot iron, and ingot iron is soft magnetic material, has the advantage such as low-coercivity and high magnetic flux rate, can guarantee the reliability that electric main shaft 3 is loaded with the iron core 4 of its manufacture.
Claims (9)
1. an electric main axis stiffness proving installation, is characterized in that: comprise electromagnetic loading device and circuit control module; Described electromagnetic loading device comprises the magnetic guiding loop being coaxially fixedly connected with electric main shaft and is sheathed on the excitation unit outside magnetic guiding loop; Described circuit control module is for controlling the circuit of excitation unit.
2. electric main axis stiffness proving installation according to claim 1, is characterized in that: described excitation unit comprise unshakable in one's determination and be wound in iron core for the coil of magnetic flux is radially provided for it along magnetic guiding loop; Described iron core comprises with the outer ring of the coaxial setting of magnetic guiding loop and is fixedly connected on the integrated iron teeth pair of outer ring inwall and outer ring; Described iron teeth is to comprising that two along the iron teeth radially arranging unshakable in one's determination; The circuit flow that described coil is wound in coil on two iron teeths and on two iron teeths is successively on the contrary.
3. electric main axis stiffness proving installation according to claim 2, is characterized in that: described iron teeth is to circumferentially evenly arranging multipair along iron core.
4. electric main axis stiffness proving installation according to claim 3, is characterized in that: described circuit control module comprises computing machine, digital to analog converter, power supply and power amplifier; Described Computer signal output terminal is connected with power amplifier signal input part by digital to analog converter, and power amplifier output terminal is electrically connected on described coil; Described power supply is electrically connected on power amplifier and is power amplifier power supply.
5. electric main axis stiffness proving installation according to claim 4, is characterized in that: described iron teeth is to being circumferentially evenly provided with 4 pairs along iron core; Described power amplifier arranges 4 output terminals accordingly.
6. electric main axis stiffness proving installation according to claim 5, is characterized in that: described excitation unit also comprises the governor motion being fixedly connected with downside unshakable in one's determination.
7. electric main axis stiffness proving installation according to claim 6, is characterized in that: described governor motion comprises pedestal and regulates platform; Described adjusting platform upper end is fixedly connected with outer ring unshakable in one's determination by support, regulates platform lower end to be slidably connected by lead screw transmission mechanism and pedestal.Described lead screw transmission mechanism comprises the screw mandrel being fixedly connected with pedestal and is located at the threaded hole matching with screw mandrel on adjusting platform.
8. electric main axis stiffness proving installation according to claim 7, is characterized in that: described lead-screw drive mechanism is the cross sliding table structure of utilizing the leading screw control slide unit of two right-angled intersections to move; Two leading screws are respectively along stalk to being provided with adjusting knob with horizontal radial setting and two leading screw one end.
9. electric main axis stiffness proving installation according to claim 8, is characterized in that: described iron core is made by ingot iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088140.9A CN103868683A (en) | 2014-01-03 | 2014-03-11 | Motorized spindle rigidity test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410003216 | 2014-01-03 | ||
| CN201410003216.3 | 2014-01-03 | ||
| CN201410088140.9A CN103868683A (en) | 2014-01-03 | 2014-03-11 | Motorized spindle rigidity test device |
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| CN103868683A true CN103868683A (en) | 2014-06-18 |
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| CN201410088140.9A Pending CN103868683A (en) | 2014-01-03 | 2014-03-11 | Motorized spindle rigidity test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155091A (en) * | 2014-08-15 | 2014-11-19 | 西安交通大学 | Simulation cutter structure for electric spindle dynamic and static stiffness non-contact electromagnetic loading test |
| CN108007657A (en) * | 2016-10-28 | 2018-05-08 | 财团法人工业技术研究院 | Non-contact dynamic stiffness measurement system and method |
| CN108414202A (en) * | 2018-03-08 | 2018-08-17 | 湖南大学 | A kind of high speed rotation shafting dynamic radial load stiffness test method and device |
| CN110220706A (en) * | 2019-07-09 | 2019-09-10 | 重庆大学 | High-speed electric main shaft Dynamic supporting stiffness test device and test method |
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2014
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| KR20020095397A (en) * | 2001-06-14 | 2002-12-26 | 현대자동차주식회사 | Rig for testing a bearing in an engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155091A (en) * | 2014-08-15 | 2014-11-19 | 西安交通大学 | Simulation cutter structure for electric spindle dynamic and static stiffness non-contact electromagnetic loading test |
| CN108007657A (en) * | 2016-10-28 | 2018-05-08 | 财团法人工业技术研究院 | Non-contact dynamic stiffness measurement system and method |
| CN108414202A (en) * | 2018-03-08 | 2018-08-17 | 湖南大学 | A kind of high speed rotation shafting dynamic radial load stiffness test method and device |
| CN110220706A (en) * | 2019-07-09 | 2019-09-10 | 重庆大学 | High-speed electric main shaft Dynamic supporting stiffness test device and test method |
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