CN205960992U - Vice pretightning force system of observing and controling of ball with from sensing function - Google Patents
Vice pretightning force system of observing and controling of ball with from sensing function Download PDFInfo
- Publication number
- CN205960992U CN205960992U CN201621038447.9U CN201621038447U CN205960992U CN 205960992 U CN205960992 U CN 205960992U CN 201621038447 U CN201621038447 U CN 201621038447U CN 205960992 U CN205960992 U CN 205960992U
- Authority
- CN
- China
- Prior art keywords
- pretightning force
- giant magnetostrictive
- magnetostrictive rod
- feed screw
- ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses a vice pretightning force system of observing and controling of ball with from sensing function, including giant magnetostrictive rod, giant magnetostrictive rod installs in the coil skeleton center, cable fetch circle and exciting coil are picked up in the winding of the coil skeleton outside, exciting coil's the outside sets up permanent magnet, exciting coil is connected with the numerical control constant current source, it is connected with adc to pick up the cable fetch circle, numerical control constant current source, adc respectively with the computer link, the utility model discloses can realize that the ball pretightning force can realize the automatic accurate control of pretightning force again from the perception, improve the vice transmission precision of ball, make the operation precision and the processingquality of digit control machine tool obtain the assurance.
Description
Technical field
The utility model belongs to the technical field of ball screw assembly, pretightning force automatic measuring and controlling, and more particularly, to one kind has self-induction
Know the ball screw assembly, pretightning force TT＆C system of function.
Background technology
Ball screw assembly, is the crucial joint portion of NC machine tool feed system, and ball screw assembly, gap directly influences numerical control
Lathe actual motion precision and crudy, however, due to the error manufacturing and assemble, there is gap in ball-screw vice president, with
When ball-screw in the presence of axial load, ball and screw thread contact site can produce elastic deformation, ball-screw with
The size in nut gap can directly influence the precision of Digit Control Machine Tool reality processing, for this reason, should manage to be eliminated or subtract as far as possible
Little.
In Digit Control Machine Tool assembling, widely used pretightning force eliminates the gap of ball-screw-transmission.The applying of pretightning force can
To reduce the axial gap of rolling element and raceway in nut assembly, to increase feed system axial rigidity, reduce the vibration in using
And the mechanical efficiency of increase ball screw assembly, particularly significant.The pre-tension method currently using is divided into traditional pre-tension method with now
The pre-tension method in generation, but traditional ball-screw firmly beforehand meanses cannot realize kinetic measurement and the control of pretightning force, pretightning force
Size be adjusted to a fixed value in Product Assembly, in the course of the work can not with the change of external loading real-time adjustment,
Nor accurately compensate for changing it is impossible to meet high accuracy, stable machine because of the transmission auxiliary air gap wearing and tearing and deformation of generating heat causes
Tool transmission requires；Although modern firmly beforehand meanses achieve the dynamic adjustment of pretightning force, during using, it is subject to various bars
Part limits it is impossible to by wide popularization and application.Constantly develop to high speed, high-precision, efficient direction with Digit Control Machine Tool, machining center,
Higher and higher requirement is proposed to ball screw assembly, preload Technique.
Chinese patent literature CN204512340U discloses a kind of controlled double nut ball screw assembly, of pretightning force, including silk
Thick stick and two feed screw nuts, two feed screw nuts are both connected on leading screw, and one of feed screw nut is provided with pre-load nut,
It is connected with, between another feed screw nut and pre-load nut, the ultra-magnetic deformation actuator being uniformly distributed circumferentially, each super magnetic
The one end causing expansion actuator arranges a force snesor.Pre-load nut is used for arranging the initial pretension of double nut ball screw assembly,
Power, the size of this pretightning force is limited to 1/3rd of load.This double nut ball screw assembly, stretching using giant magnetostrictive rod
Contract and to increase or to reduce the pretightning force between leading screw and two nuts it is achieved that the automatic pretension of ball-screw, safe and reliable, improve
The precision stability of ball-screw auxiliary driving and reliability.Although the controlled double nut ball screw assembly, of this pretightning force enables
The adjust automatically of ball screw assembly, pretightning force, but do not enable certainly perceiving of pretightning force, ultra-magnetic deformation actuator and spiral shell
Between mother, the force snesor of setting increased the complexity installed with design.
As can be seen here, in the prior art, the control of ball screw assembly, has been only reached with the journey of automation adjustment pretightning force
Degree, did not enable before automation adjustment to ball screw assembly, pretightning force from perception；Additionally, existing to ball-screw
Secondary automatic pre-tightening apparatus complex structure, increased the difficulty installed and used.
Utility model content
The utility model, in order to solve the above problems, overcomes existing ball screw assembly, pretightning force controllable device not enable pre-
Clamp force from perceptional function and baroque problem it is proposed that a kind of have survey from the ball screw assembly, pretightning force of perceptional function
Control system.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of ball screw assembly, pretightning force TT＆C system having from perceptional function, including pre-tightening apparatus and measure and control device,
Wherein：
The symmetrical structure that described pre-tightening apparatus export for both-end, including giant magnetostrictive rod, described giant magnetostrictive rod peace
It is loaded on coil rack center, outside described coil rack, be wound with pick-up winding and excitation coil, the outside of described excitation coil
Setting permanent magnet, described giant magnetostrictive rod two ends are connected with yoke by two pieces of magnetic inductive blocks respectively, described ultra-magnetic telescopic
It is cased with axle sleeve, the outside of every piece of magnetic inductive block is provided with an output ejector pin, described output top outside rod and the magnetic inductive block at two ends
Bar is connected with non-magnetic shell by pre-load nut, be additionally provided between described output ejector pin and non-magnetic shell butterfly spring with
Position-limiting drum, described position-limiting drum is located at the outside of butterfly spring, passes through pre-load nut between described output ejector pin and non-magnetic shell
Adjustment butterfly spring and position-limiting drum apply adjustable pretightning force to improve the telescopicing performance of giant magnetostrictive rod.
Described measure and control device, including computer, digital-control constant-flow source and analog-digital converter；Described computer is permanent with numerical control respectively
Stream source, analog-digital converter connect；Described digital-control constant-flow source connects the excitation coil in pre-tightening apparatus, makes to be passed through electricity in excitation coil
Miscarriage magnetisation field, the magnetic fields that excitation coil produces are on giant magnetostrictive rod；In described analog-digital converter and pre-tightening apparatus
Pick-up winding connect, described pick-up winding measures the voltage signal of giant magnetostrictive rod, the voltage signal of pick-up winding measurement
Transmit to computer through analog-digital converter.
Described permanent magnet is tubular structure, and permanent magnet provides bias magnetic field for giant magnetostrictive rod.
Described non-magnetic shell is internally provided with internal thread.
Described giant magnetostrictive rod is arranged between the first feed screw nut of ball screw assembly, and the second feed screw nut, described
First feed screw nut is connected with each other by flat key with the second feed screw nut, and described first feed screw nut and the second feed screw nut pass through
Ball is connected with leading screw, and the output ejector pin at described giant magnetostrictive rod two ends passes through locking nut, stud and the first leading screw respectively
Nut, the second feed screw nut connect, and are provided with pad between described locking nut and the first feed screw nut, the second feed screw nut.
The beneficial effects of the utility model are：
The utility model, with giant magnetostrictive material as core, realizes actuator and biography using the positive back wash effect that material has
Sensor function, permanent magnet provides bias magnetic field for giant magnetostrictive rod, and a coil is this measure and control device as excitation coil
Ultra-magnetic deformation actuator provide driving magnetic field, by change excitation coil current control actuator export pretightning force big
Little, another one coil realizes ball screw assembly, pretension as pick-up winding by obtaining the magnetic field change that pretightning force change causes
Power from perceptional function.The utility model had not only enabled ball-screw pretension force self and has known but also enable the automatically accurate of pretightning force
Control, improve the transmission accuracy of ball screw assembly, so that the running precision of Digit Control Machine Tool and crudy is guaranteed.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is fundamental diagram of the present utility model；
Wherein, 1- output ejector pin, 2- pre-load nut, 3- non-magnetic shell, 4- butterfly spring, 5- position-limiting drum, 6- yoke, 7-
Permanent magnet, 8- excitation coil, 9- coil rack, 10- axle sleeve, 11- giant magnetostrictive rod, 12- pick-up winding, 13- magnetic inductive block,
14- locking nut, 15- pad, 16- first feed screw nut, 17- stud, 18- flat key, 19- second feed screw nut, 20- leading screw,
21- ball, 22- computer, 23- digital-control constant-flow source, 24- analog-digital converter.
Specific embodiment：
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
A kind of ball screw assembly, pretightning force TT＆C system having from perceptional function, including pre-tightening apparatus and measure and control device,
Wherein：
The structural representation of pre-tightening apparatus in the utility model as shown in Figure 1, described pre-tightening apparatus export for both-end
Symmetrical structure, including giant magnetostrictive rod 11, described giant magnetostrictive rod 11 is installed on coil rack 9 center, described coil bone
It is wound with pick-up winding 12 and excitation coil 8, the outside setting permanent magnet 7 of described excitation coil 8, described super magnetic outside frame 9
Extension stem 11 two ends are caused to be connected with yoke 6 by two pieces of magnetic inductive blocks 13 respectively, the magnetic conduction at described giant magnetostrictive rod 11 and two ends
It is cased with axle sleeve 10, the outside of every piece of magnetic inductive block 13 is provided with an output ejector pin 1, and described output ejector pin 1 passes through outside block 13
Pre-load nut 2 is connected with non-magnetic shell 3, and described non-magnetic shell 3 is internally provided with internal thread, described output ejector pin 1 with non-
It is additionally provided with butterfly spring 4 and position-limiting drum 5, described position-limiting drum 5 is located at the outside of butterfly spring 4, described defeated between magnetic conductive shell 3
Go out, between push rod 1 and non-magnetic shell 3, adjustable pretightning force is applied by pre-load nut 2 adjustment butterfly spring 4 and position-limiting drum 5
To improve the telescopicing performance of giant magnetostrictive rod 11.
Described giant magnetostrictive rod 11 be arranged at the first feed screw nut 16 of ball screw assembly, and the second feed screw nut 19 it
Between, described first feed screw nut 16 is connected with each other by flat key 18 with the second feed screw nut 19, described first feed screw nut 16 with
Second feed screw nut 19 is connected with leading screw 20 by ball 21, and the output ejector pin 1 at described giant magnetostrictive rod 11 two ends leads to respectively
Cross locking nut 2, stud 17 is connected with the first feed screw nut 16, the second feed screw nut 19, described locking nut 2 and the first leading screw
It is provided with pad 15 between nut 16, the second feed screw nut 19.
Described permanent magnet 7 is tubular structure, and permanent magnet 7 produces constant magnetic field and provides biasing for giant magnetostrictive rod
Magnetic field.
Operation principle in figure as shown in Figure 2 contains the annexation of measure and control device, and described measure and control device, including calculating
Machine 22, digital-control constant-flow source 23 and analog-digital converter 24；Described computer 22 is respectively with digital-control constant-flow source 23, analog-digital converter 24 even
Connect；Described digital-control constant-flow source 23 connects the excitation coil 8 in pre-tightening apparatus, makes to be passed through current induced magnetic field in excitation coil 8, swashs
The magnetic fields encouraging coil 8 generation are on giant magnetostrictive rod 11；Pickup leads in described analog-digital converter 25 and pre-tightening apparatus
Circle 12 connection, described pick-up winding 12 measures the voltage signal of giant magnetostrictive rod 11, the voltage signal of pick-up winding 12 measurement
Transmit to computer 22 through analog-digital converter.
Operation principle of the present utility model：
Fundamental diagram as shown in Figure 2, in the course of work of the present utility model, giant magnetostrictive rod 11 is using combination
Formula type of drive：Permanent magnet 7 produces constant magnetic field and provides bias magnetic field for giant magnetostrictive rod 11, prevents frequency multiplication phenomenon；
Excitation coil 8 provides driving magnetic field for the giant magnetostrictive rod 11 of this measure and control device, by changing the current control of excitation coil 8
Giant magnetostrictive rod 11 exports the size of pretightning force.Excitation coil 8 is connected with digital-control constant-flow source 23, by computer according to expectation
Pretightning force and the comparison of the pretightning force obtaining from perceptional function after, the size of adjustment digital-control constant-flow source output current changes excitation
The size of electric current in coil 8.The change of electric current can cause the change of driving magnetic field in excitation coil 8, and then controls super mangneto to stretch
Contracting rod 11 acts on the size of pretightning force F between the first feed screw nut 16 and the second feed screw nut 19, the first feed screw nut 16
With the second feed screw nut 19, giant magnetostrictive rod is produced with the reaction force F ' of pretightning force, the reaction force F ' of pretightning force and effect
To on giant magnetostrictive rod 11, magnetic conductivity in giant magnetostrictive rod 11 is caused to change, the magnetic conductivity after change makes excitation coil 8
Magnetic induction intensity after giant magnetostrictive rod 11 couples changes, and the change of magnetic induction intensity is passed through in pre-tightening apparatus
Pick-up winding 12 measurement obtains, and pick-up winding 12 output is the voltage signal that reaction magnetic induction intensity changes, voltage signal warp
Analog-digital converter 24 feeds back to computer 22, and pick-up winding realizes ball wire by obtaining the magnetic field change that pretightning force change causes
Thick stick pair pretightning force from perceptional function, the result obtaining is the pretightning force obtaining from perceptional function.
Although the above-mentioned accompanying drawing that combines is described to specific embodiment of the present utility model, not new to this practicality
The restriction of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel do not need to pay the various modifications that creative work can make or deformation still in protection model of the present utility model
Within enclosing.
Claims (4)
1. a kind of ball screw assembly, pretightning force TT＆C system having from perceptional function, including pre-tightening apparatus and measure and control device, its
Feature is：
The symmetrical structure that described pre-tightening apparatus export for both-end, including giant magnetostrictive rod, described giant magnetostrictive rod is installed on
Coil rack center, is wound with pick-up winding and excitation coil, the outside setting of described excitation coil outside described coil rack
Permanent magnet, described giant magnetostrictive rod two ends are connected with yoke by two pieces of magnetic inductive blocks respectively, described giant magnetostrictive rod with
It is cased with axle sleeve, the outside of every piece of magnetic inductive block is provided with an output ejector pin, described output ejector pin leads to outside the magnetic inductive block at two ends
Cross pre-load nut to be connected with non-magnetic shell, be additionally provided between described output ejector pin and non-magnetic shell butterfly spring with spacing
Cylinder, described position-limiting drum is located at the outside of butterfly spring；
Described measure and control device, including computer, digital-control constant-flow source and analog-digital converter；Described computer respectively with numerical control constant current
Source, analog-digital converter connect；Described digital-control constant-flow source connects excitation coil, described analog-digital converter and the pretension in pre-tightening apparatus
Pick-up winding in device connects.
2. a kind of ball screw assembly, pretightning force TT＆C system having from perceptional function as claimed in claim 1, is characterized in that：
Described permanent magnet is tubular structure, and permanent magnet provides bias magnetic field for giant magnetostrictive rod.
3. a kind of ball screw assembly, pretightning force TT＆C system having from perceptional function as claimed in claim 1, is characterized in that：
Described non-magnetic shell is internally provided with internal thread.
4. a kind of ball screw assembly, pretightning force TT＆C system having from perceptional function as claimed in claim 1, is characterized in that：
Described giant magnetostrictive rod is arranged between the first feed screw nut of ball screw assembly, and the second feed screw nut, described first leading screw
Nut is connected with each other by flat key with the second feed screw nut, and described first feed screw nut and the second feed screw nut pass through ball and silk
Thick stick connects, the output ejector pin at described giant magnetostrictive rod two ends pass through respectively locking nut, stud and the first feed screw nut, second
Feed screw nut connects, and is provided with pad between described locking nut and the first feed screw nut, the second feed screw nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038447.9U CN205960992U (en) | 2016-09-05 | 2016-09-05 | Vice pretightning force system of observing and controling of ball with from sensing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038447.9U CN205960992U (en) | 2016-09-05 | 2016-09-05 | Vice pretightning force system of observing and controling of ball with from sensing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205960992U true CN205960992U (en) | 2017-02-15 |
Family
ID=57978550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621038447.9U Expired - Fee Related CN205960992U (en) | 2016-09-05 | 2016-09-05 | Vice pretightning force system of observing and controling of ball with from sensing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205960992U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884948A (en) * | 2017-04-06 | 2017-06-23 | 山东大学 | A kind of adjustable double nut ball screw assembly, of combined type pretightning force and installation method |
| WO2022052499A1 (en) * | 2020-09-14 | 2022-03-17 | 山东大学 | Magnetic suspension ball lead screw pair |
-
2016
- 2016-09-05 CN CN201621038447.9U patent/CN205960992U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884948A (en) * | 2017-04-06 | 2017-06-23 | 山东大学 | A kind of adjustable double nut ball screw assembly, of combined type pretightning force and installation method |
| CN106884948B (en) * | 2017-04-06 | 2023-08-01 | 山东大学 | Combined type double-nut ball screw pair with adjustable pretightening force and installation method |
| WO2022052499A1 (en) * | 2020-09-14 | 2022-03-17 | 山东大学 | Magnetic suspension ball lead screw pair |
| US11920660B2 (en) | 2020-09-14 | 2024-03-05 | Shandong University | Magnetic levitation ball screw pair |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106230308B (en) | A kind of ball screw assembly, pretightning force TT＆C system and method having from perceptional function | |
| CN103171733B (en) | A kind of electrical bicycle middle shaft moment sensor | |
| CN205960992U (en) | Vice pretightning force system of observing and controling of ball with from sensing function | |
| CN108167264A (en) | A kind of variation rigidity hydraulic drive mechanism and its variation rigidity regulation and control method based on giant magnetostrictive material | |
| DE112012005130T5 (en) | Linear motor apparatus and method for controlling the linear motor apparatus | |
| CN106884948B (en) | Combined type double-nut ball screw pair with adjustable pretightening force and installation method | |
| WO2015161545A1 (en) | Electric bicycle central axle torque speed sense device | |
| CN104565253A (en) | Automatic pre-tightening device for double-nut ball screw pair | |
| CN102253236A (en) | Sectional magnetic encoding method and system for mMeasuring rotating shaft parameters | |
| CN109807414A (en) | It is a kind of intelligence five-axle linkage in wire wire cutting machine | |
| CN109854093A (en) | A kind of detection method and device of Intelligent lock core position | |
| CN104141759A (en) | Axial pre-tightening device of screw rod nut pair with controllable pre-tightening force | |
| CN101949750A (en) | Motor steering torque measuring device and motor steering torque measuring method | |
| CN108871639A (en) | Axis moment inspecting system | |
| CN203806093U (en) | Middle axle torque speed sensor of electric bicycle | |
| CN102721535A (en) | Linear-motion electromagnetic loading device | |
| CN107655623A (en) | Contactless Jing Dongtaibiaodingshiyantai | |
| CN105041761B (en) | Zero adjustment device for servo actuator | |
| CN106772031A (en) | A kind of straight line force offered load analogue means for linear vibration motor | |
| CN103925945B (en) | A kind of rotary electromagnetic actuator performance proving installation | |
| CN103454024B (en) | Based on the concrete-bridge tendon tension measuring method of converse magnetostriction | |
| CN108627294A (en) | Low-resistance formula axis torque measuring method | |
| CN203416148U (en) | Hysteresis brake | |
| CN208198724U (en) | Low-resistance formula axis moment measuring device | |
| Liu et al. | Research on the constant output force control system for giant magnetostrictive actuator disturbed by external force |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20190905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |