CN206592507U - A kind of adjustable double nut ball screw assembly, of combined type pretightning force - Google Patents
A kind of adjustable double nut ball screw assembly, of combined type pretightning force Download PDFInfo
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- CN206592507U CN206592507U CN201720353118.1U CN201720353118U CN206592507U CN 206592507 U CN206592507 U CN 206592507U CN 201720353118 U CN201720353118 U CN 201720353118U CN 206592507 U CN206592507 U CN 206592507U
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Abstract
The utility model discloses a kind of adjustable double nut ball screw assembly, of combined type pretightning force, it is made up of leading screw, left nut, left flat key, left pretension terminal pad, force snesor, ring-type ultra-magnetic deformation actuator, right pretension terminal pad, right flat key and right nut；Described leading screw passes through described ring-type ultra-magnetic deformation actuator, the left nut coordinated with leading screw is installed in the side of ring-type ultra-magnetic deformation actuator, opposite side is provided with the right nut coordinated with leading screw, described left nut is connected by left flat key with left pretension terminal pad, left pretension terminal pad is arranged on ring-type ultra-magnetic deformation actuator, and described force snesor is arranged between ring-type ultra-magnetic deformation actuator and left nut；Described right nut is connected by right flat key with right pretension terminal pad, and described right pretension terminal pad is arranged on ring-type ultra-magnetic deformation actuator.
Description
Technical field
The utility model is related to the combined type double nut ball screw assembly, that a kind of pretightning force can manually and automatically regulate and control, category
In the functional part field of Digit Control Machine Tool, it is related to the double nut ball screw assembly, of Rolling Components.
Background technology
The power of equipment manufacture directly reflects a national national economy and national defense construction development level, and numerical control
Lathe is the basis of equipment manufacture development, and functional part is as the one of the big constituting portion point of Digit Control Machine Tool three, and its performance is influence
The key factor of lathe overall performance and precision.Ball screw assembly, has the small, transmission efficiency that rubs as important functional part
The advantages of high, transmission accuracy and high rigidity, it is widely used in Digit Control Machine Tool, machining center feed system.However, from Chinese quality
The Digit Control Machine Tool customer satisfaction survey situation that association initiates can be seen that pretightning force and gap change in the ball-screw course of work
It is the one of the main reasons for causing Precision of NC Machine Tool retentivity difference.
The pretightning force of ball screw assembly, is to influence the principal element of its moment of friction and undulate quantity, determines its dynamic operation
Performance and service life, pretightning force is applied to nut, can be eliminated the axial gap as caused by foozle and assembling reason, be carried
The axial rigidity and positioning precision of high ball screw assembly,.However, pretightning force crosses conference increase driving moment, aggravation ball and leading screw
Between fatigue wear, reduce ball screw assembly, transmission efficiency, increase temperature rise, shorten working life.Research shows that double nut is pre-
Tight method has higher stationkeeping ability and more preferable robust motion, and its axially contact rigidity is better than single nut pre-pressing structure.
Traditional double nut firmly beforehand meanses mainly have four kinds of gasket type, screw-type, tooth differential and spring, gasket type pretension
Shimming between two nuts of ball screw assembly, is typically employed in, the thickness of adjust pad makes nut produce axial displacement, with
The purpose for eliminating gap and producing pretightning force is reached, this pre-pressing structure is simple, and rigidity is high, pretension is reliable and is difficult relaxation, is entering
Often it is used in system.But lead screw pair pretightning force is typically preset in manufacturer, and adjust automatically is unable in process,
Prolonged service wear causes the change of pretightning force size, so as to reduce transmission accuracy.And the adjustment and maintenance of pretightning force needs people
Work realizes that this will expend substantial amounts of manpower and materials.
Disclosed in Chinese patent literature CN203656087U《The double nut ball screw assembly, that pretightning force can be adjusted accurately》With
Disclosed in CN105965307A《Double-screw nut ball leading screw secondary pretightening force measuring adjusts premeasuring device and linear feeding system》Can be certainly
The accurate adjustment of ball screw assembly, pretightning force is realized in the change of dynamic detection pretightning force, but can not realize automatic adjustment in real time.
Disclosed in CN106017915A《A kind of accurate pretension and the ball screw assembly precision retaining ability testing device of loading》
Pretightning force between two nuts is detected using pressure sensor, and silk is accurately controlled by the stroke of piezoelectric actuator
The size of thick stick nut pretightning force realizes the automatic compensation of pretightning force, but the strain of piezoelectric actuator output and power are relatively
It is small, and its operating voltage is higher.
Disclosed in CN1045253A《A kind of automatic pre-tightening apparatus of double nut ball screw assembly,》Using force snesor and super magnetic
Flexible cylinder is caused to realize the auto-control of Double-screw nut ball leading screw secondary pretightening force measuring, but structure design lays particular emphasis on principle, pretension bolt
It is difficult to apply uniform initial pretightning force, pneumatic radiating effect is not good, and ball screw assembly, is not considered between real work platform
Install.
Utility model content
For above-mentioned deficiency, the utility model provides one kind and pretightning force can be detected in real time, realizes pretightning force
The combined type double nut ball screw assembly, manually and automatically accurately adjusted.The device is easy to install with workbench, real using flexible
Moment of torsion is transmitted between having showed double nut, ensure that pretightning force is circumferentially uniformly distributed along nut, and pretightning force adjusting range is big and can root
Adjusted in real time according to external loading change or abrasion condition.
The utility model is achieved through the following technical solutions：
A kind of adjustable double nut ball screw assembly, of combined type pretightning force, is by leading screw, left nut, left flat key, left pretension
What terminal pad, force snesor, ring-type ultra-magnetic deformation actuator, right pretension terminal pad, right flat key and right nut were constituted；
Described leading screw passes through described ring-type ultra-magnetic deformation actuator, in the side of ring-type ultra-magnetic deformation actuator
The left nut coordinated with leading screw is installed, opposite side is provided with the right nut coordinated with leading screw, and described left nut passes through left flat key
It is connected with left pretension terminal pad, left pretension terminal pad is arranged on ring-type ultra-magnetic deformation actuator, described force snesor
Between ring-type ultra-magnetic deformation actuator and left nut；Described right nut passes through right flat key and right pretension terminal pad phase
Even, described right pretension terminal pad is arranged on ring-type ultra-magnetic deformation actuator.
Further, the left nut, including flange and the flange on flange；It is uniform in described circumference of flange
Screw is distributed with, is easy to the installation between ball screw assembly, and workbench；Symmetrical two keyways, described on the circumference of flange
Left flat key be arranged on the keyway in.
Further, described right nut is identical with the structure of left nut, is symmetrically installed on leading screw.
Further, the left pretension terminal pad, right pretension disk each includes disk body, and described disk body is stepped to be carried
Flange, inside there is tubular cavity；Keyway is provided with the flange of described disk body, keyway is circumferentially symmetric；Described
Right flat key is arranged in the keyway；Arc screw is provided with described disk body, the effect of arc screw is to be used to surpass with ring-type
Magnetic deformation actuator is connected；
Further, the angle of described arc screw is 30 °, in circumferential 120 ° of distributions in disk body great circle card；
Further, circular hole is provided with the barrel positioned at disk body tubular cavity.
Further, described right pretension terminal pad is except without the circular hole on disk body tubular cavity barrel, with left pretension
Terminal pad other parts structure is identical.
Further, the force snesor, including cylinder and foil gauge, cylinder are the reeded cylinder of an Intermediate Gray, should
Become piece to be uniformly attached on the recessed poor outer wall of cylinder, the wire of foil gauge is passed out of left pretension terminal pad circular hole.
Further, the ring-type ultra-magnetic deformation actuator, including base, non-magnetic shell, dish type yoke, permanent magnetism
Ring, tubular yoke, coil rack, excitation coil, ring-type giant magnetostrictive material, take-off lever, disk spring, pretension bolt, end
Lid and soft iron；
The side of described base is provided with long sleeve, and opposite side is provided with short sleeve；Ring-type giant magnetostrictive material is sleeved on
On the long sleeve of base；A permanent-magnetic clamp is respectively provided with the two ends of ring-type giant magnetostrictive material；Described coil rack suit
In the outer ring of ring-type giant magnetostrictive material and permanent-magnetic clamp, excitation coil is wrapped on coil rack, in dumbbell shaped winding so as to
In the area of increase oil cooling radiating；
Dish type yoke is enclosed on permanent-magnetic clamp, tubular yoke be located at excitation coil outer ring, installed in two dish type yokes it
Between, the magnetic circuit that ring-type giant magnetostrictive material, permanent-magnetic clamp, dish type yoke and the formation of tubular yoke are closed；
Soft iron is installed in the side of the dish type yoke positioned at end cover side；
Described take-off lever is sleeved on described long sleeve, and take-off lever connects through soft iron with permanent-magnetic clamp end, is enclosed on
On the long sleeve of base；Disk spring is enclosed on take-off lever, and one end is pressed in the dish type of take-off lever projection, and the other end is equipped with pretension
Bolt, pretension bolt is arranged on end cap, and take-off lever, disk spring combine to form the actuating of ring-type ultra-magnetic telescopic with pretension bolt
The prepressing device of device；
Non-magnetic shell is arranged between base and end cap by trip bolt, and attachment means are by base, end cap, non-magnetic
Cage connection is integral.To protect internal structure；Screw circumferentially is distributed with 120 ° on base and end cap, so as to cheese head screw
Left pretension terminal pad and right pretension terminal pad are arranged on ring-type ultra-magnetic deformation actuator.
The installation method of the adjustable double nut ball screw assembly, of described combined type pretightning force, it is as follows：
First left nut is installed on leading screw, then the keyway of the keyway and left nut of left pretension terminal pad is aligned, is loaded
Upper bottom left flat key and fixation；Force snesor, ring-type ultra-magnetic deformation actuator are penetrated into leading screw successively, the super mangneto of rotating annular is stretched
Contracting actuator, adjusts the screw of its base and the arc screw of left pretension terminal pad to suitable position, and pass through cheese head screw
Left pretension terminal pad is connected with ring-type ultra-magnetic deformation actuator；
Right pretension terminal pad is penetrated into leading screw again, right nut is screwed in, while the output force signal of force snesor collection is observed,
When power output reaches initial pretension requirement, stop dextrorotation turn nut, adjust the position of right pretension terminal pad, make the key of right nut
Groove and the keyway of right pretension terminal pad are aligned, and are installed right flat key, are surpassed right pretension terminal pad fixed to ring-type by cheese head screw
On magnetic deformation actuator, manually setting for initial pretightning force is completed；In the course of work, if because load changes or fatigue mill
When damage need to change the pretightning force of double nut ball screw assembly, force snesor, external data acquisition system, Numerical Controlled Current Source and ring
Shape ultra-magnetic deformation actuator constitutes closed-loop control system, by controlling in real time in ring-type ultra-magnetic deformation actuator excitation coil
Portion's size of current changes pretightning force, realizes the automatic accurate on-line tuning of pretightning force.
Usefulness of the present utility model is：
(1) design of device considers real work situation, simple in construction, and easy for installation, feasibility is strong.Left nut and the right side
The installation that screw is easy to workbench is distributed with the flange of nut, between left nut, right nut and ring-type ultra-magnetic deformation actuator
It is connected by flat key with pretension terminal pad and easily realizes that moment of torsion is transmitted.
(2) pretightning force of double nut ball screw assembly, can realize manually and automatically accurate adjustment, make adjustment mode cleverer
It is living.In initial install, ring-type ultra-magnetic deformation actuator does not work, the nut of manual rotation or so two to two pretension terminal pads
End, is just contacted with force snesor, ring-type ultra-magnetic deformation actuator, and the power that now force snesor is measured is zero；Continue to revolve
Turn nut changes keyway position, and pretightning force gradually increases, according to the measured value of force snesor by rotating with arc screw
Pretension terminal pad, pretightning force is accurately adjusted the initial pretightning force to needed for ball screw assembly,；In the course of the work, due to load
Change because when the abrasion that works long hours need to adjust pretightning force, changes ring-type ultra-magnetic deformation actuator by DCPS digitally controlled power source and swashed
The automatic on-line adjustment of pretightning force can be realized by encouraging the electric current of coil.
(3) pretightning force is uniformly distributed.By rotating, nut extrudes force snesor and ring-type ultra-magnetic deformation actuator is exported
The annulus end face of bar applies the take-off lever application pretension by ring-type ultra-magnetic deformation actuator in initial pretightning force, the course of work
Power, ball screw assembly, pretightning force is in EDS maps, and Relative distribution formula point is more uniformly stressed, and is adjusted relatively easy.
(4) integrated design makes ring-type ultra-magnetic deformation actuator improve pretightning force output performance, adds adjustment model
Enclose.Novel cyclic ultra-magnetic deformation actuator is using ring-type giant magnetostrictive material as core, and it is defeated that structure design consideration can improve its
Go out the prepressing device design that the ring-type precompressed bolt of performance is combined with disc spring；Radiating mode uses oil cooling, and excitation coil is using mute
Bell-shaped winding mode, makes ring-type ultra-magnetic deformation actuator have more preferable radiating effect.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are these
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Accompanying drawing 1 is the structural representation of the adjustable double nut ball screw assembly, of the utility model combined type pretightning force；
Accompanying drawing 2 is the structural representation of left nut in the utility model；
Accompanying drawing 3 is the structural representation of left pretension terminal pad；
Accompanying drawing 4 is the structural representation of force snesor；
Accompanying drawing 5, Fig. 6 are the structural representation of ring-type ultra-magnetic deformation actuator；
In figure, 1, leading screw, 2, left nut, 3, left flat key, 4, left pretension terminal pad, 5, cheese head screw, 6, power sensing, 7, ring
Shape ultra-magnetic telescopic is activated, and 8, right pretension terminal pad, 9, right flat key, 10, right nut；21st, flange, 22, screw, 23, flange,
24th, keyway；41st, disk body, 42, keyway, 43, arc screw, 44, circular hole；61st, cylinder, 62, foil gauge；71st, base, 72, non-lead
Magnetic shell, 73, dish type yoke, 74, permanent-magnetic clamp, 75, tubular yoke, 76, coil rack, 77, excitation coil, 78, the super magnetic of ring-type
Cause telescopic material, 79, take-off lever, 710, disk spring, 711, pretension bolt, 712, end cap, 713, soft iron, 714, fastening spiral shell
Nail.
Embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, lead screw pair pretightning force is typically preset in manufacturer in the prior art, plus
Adjust automatically is unable to during work, prolonged service wear causes the change of pretightning force size, so as to reduce transmission accuracy.And
The adjustment and maintenance of pretightning force need to manually realize that this will expend substantial amounts of manpower and materials deficiency, even if some devices can be examined automatically
The accurate adjustment of ball screw assembly, pretightning force is realized in the change for surveying pretightning force, but can not realize automatic adjustment in real time, in order to solve
As above technical problem, present applicant proposes a kind of adjustable double nut ball screw assembly, of combined type pretightning force.
In a kind of typical embodiment of the application, as shown in Figure 1 there is provided one kind as shown in figure 1, the utility model
A kind of adjustable double nut ball screw assembly, of combined type pretightning force, mainly include leading screw 1, left nut 2, left flat key 3, left pretension
Terminal pad 4, cheese head screw 5, force snesor 6, ring-type ultra-magnetic deformation actuator 7, right pretension terminal pad 8, right flat key 9 and right spiral shell
Mother 10.Leading screw 1 sequentially passes through left nut 2, force snesor 6, ring-type ultra-magnetic deformation actuator 7 and right nut 10, two nuts
Motion transmission is realized by ball between leading screw 1；Left nut 2 is arranged on leading screw 1, is connected by left flat key 3 with left pretension
Disk 4 is connected；Left flat key 3 is located at left nut 2 and in the keyway of left pretension terminal pad 4, its one end is fixed by screws in left spiral shell
In the keyway of mother 2, the other end can be slided in the keyway of left pretension terminal pad 4, to realize that pretightning force adjustment and moment of torsion are passed
Pass；Left pretension terminal pad 4 is arranged on ring-type ultra-magnetic deformation actuator 7 by cheese head screw 5, with left nut 2 by left flat key 3
It is connected；Ring-type ultra-magnetic deformation actuator 7 penetrates leading screw 1, between left pretension terminal pad 4 and right pretension terminal pad 8；Power is passed
The one end of sensor 6 is arranged on the short sleeve of the base of ring-type ultra-magnetic deformation actuator 7, and the other end and left nut 2 are closely coupled, just
In the measurement for realizing ball screw assembly, pretightning force；Right pretension terminal pad 8 is caused by cheese head screw 5 installed in ring-type ultra-magnetic telescopic
On dynamic device 7, it is connected with right nut 10 by right flat key 9, its position and left nut 2 are symmetrical；Right flat key 9 is located at right pretension terminal pad 8
In the keyway of right nut 10, one end of right flat key 9 is fixed in the keyway of right nut 10, and the other end can be connected in right pretension
Slided in the keyway of disk 8, can realize that double nut ball-screw accessory torque is transmitted by two groups of left and right flat key；Right nut 10 and a left side
Nut 2 is symmetrically installed.
As shown in Fig. 2 left nut 2 mainly includes flange 21, screw 22, flange 23 and keyway 24；The even circumferential of flange 21
6 screws are distributed with, are easy to symmetrically divide on the installation between double nut ball screw assembly, and real work platform, the circumference of flange 23
Being furnished with two keyways 24, keyway 24 has screw to fix left flat key 3；Right nut 10 is identical with the structure of left nut 2,
It is symmetrically installed on leading screw, during work, wherein any one can be as mother nut, and another is added as secondary nut
Flexibility.
As shown in figure 3, left pretension terminal pad 4 mainly includes disk body 41, keyway 42, arc screw 43 and circular hole 44；Disk body
41 is stepped with flange, inside has tubular cavity, the signal wire for placing force snesor 6；Two keyways 42 are located at disk body
Flange on, be circumferentially symmetric；The angle of 3 arc screws 43 is 30 °, in circumferential in disk body great circle card
120 ° of distributions, are easy to implement the setting of initial pretightning force during installation；Circular hole 44 is located on the barrel of disk body tubular cavity, for power
Sensor 6 is connected with external data collecting device；Right pretension terminal pad 8 is except without the circular hole on disk body tubular cavity barrel
44, it is identical with left pretension terminal pad other parts structure.
As shown in figure 4, force snesor 6 mainly includes cylinder 61 and foil gauge 62, cylinder 61 is that an Intermediate Gray is reeded
Cylinder, foil gauge 62 is uniformly attached on the recessed poor outer wall of cylinder, and the barrel of groove part is relatively thin, can improve the spirit of power output
Sensitivity, the signal wire of foil gauge 62 is passed in the circular hole 44 of left pretension terminal pad 4.
As shown in Figure 5, Figure 6, ring-type ultra-magnetic deformation actuator 7 mainly includes base 71, non-magnetic shell 72, dish type magnetic
Yoke 73, permanent-magnetic clamp 74, tubular yoke 75, coil rack 76, excitation coil 77, ring-type giant magnetostrictive material 78, take-off lever 79,
Disk spring 710, pretension bolt 711, end cap 712, soft iron 713 and trip bolt 714.Base 71 is that two ends carry long and short set
The disk-shaped structure of cylinder；
Ring-type giant magnetostrictive material 78 is sleeved on the long sleeve of base 71；Two permanent-magnetic clamps 74 are stretched positioned at the super mangneto of ring-type
The two ends of compression material 78, are that ring-type giant magnetostrictive material 78 provides bias magnetic field；
Coil rack 76 is arranged on the periphery of ring-type giant magnetostrictive material 78 and permanent-magnetic clamp 74, and excitation coil 77 is wrapped in
On coil rack 76, dumbbell shaped canoe formation cavity, the area of increase oil cooling radiating；Dish type yoke 73 is enclosed on permanent-magnetic clamp 74
On, tubular yoke 75 is located at the outside of excitation coil 77, in dish type yoke 73, ring-type giant magnetostrictive material 78, forever
Magnet ring 74, dish type yoke 73 and the formation closed magnetic circuit of tubular yoke 75；
Soft iron 713 is installed in the side positioned at the dish type yoke of end cover side；Take-off lever 79 passes through soft iron 713 and permanent-magnetic clamp
74 ends connect, on the long sleeve for being enclosed on base 71；Disk spring 710 is enclosed on take-off lever 79, and one end is pressed in take-off lever 79
In dish type projection, the other end is equipped with pretension bolt 711, and pretension bolt 711 is arranged on end cap, take-off lever 79, disk spring 710
The prepressing device to form ring-type ultra-magnetic deformation actuator 7 is combined with pretension bolt 711, the position for changing pretension bolt 711 can
Different compressive pre-stresses are provided for ring-type giant magnetostrictive material 78；Non-magnetic shell 72 is arranged on bottom by trip bolt 714
Between seat 71 and end cap 712, trip bolt 714 on base 71 and end cap 712 by being threaded into non-magnetic shell 72, the bottom of by
Seat 71, end cap 712 link into an integrated entity with non-magnetic shell 72, to protect internal structure；It is in circumferentially on base 71 and end cap 712
120 ° are distributed with screw, so that cheese head screw 5 stretches left pretension terminal pad 4 and right pretension terminal pad 10 installed in the super mangneto of ring-type
On contracting actuator 7.
When the adjustable double nut ball screw assembly, of the combined type pretightning force is initially installed, left nut 2 is first installed to leading screw 1
On, then the keyway of the keyway of left pretension terminal pad 4 and left nut 2 aligned, bottom left flat key 3 and fixed in loading；Power is sensed
Device 6, ring-type ultra-magnetic deformation actuator 7 penetrate leading screw 1 successively, and rotating annular ultra-magnetic deformation actuator 7 adjusts its base 71
The arc screw 43 of screw and left pretension terminal pad 4 arrive suitable position, and by cheese head screw 5 by left pretension terminal pad 4
It is connected with ring-type ultra-magnetic deformation actuator 7；
Right pretension terminal pad 8 is penetrated into leading screw 1 again, right nut 10 is screwed in, while observing the power output that force snesor 6 is gathered
Signal, when power output reaches initial pretension requirement, stops dextrorotation turn nut 10, adjusts the position of right pretension terminal pad 8, make the right side
The keyway of nut 10 and the keyway of right pretension terminal pad 8 are aligned, and install right flat key 9, by cheese head screw 5 by right pretension terminal pad
8 are fixed on ring-type ultra-magnetic deformation actuator 7, complete manually setting for initial pretightning force；In the course of work, if because of load hair
When changing or fatigue wear need to change the pretightning force of double nut ball screw assembly, force snesor 6, external data acquisition system,
Numerical Controlled Current Source and the composition closed-loop control system of ring-type ultra-magnetic deformation actuator 7, by controlling the super mangneto of ring-type to stretch in real time
The internal current size of 7 excitation coil of contracting actuator 77 changes pretightning force, realizes the automatic accurate on-line tuning of pretightning force.
It is not new to this practicality although above-mentioned embodiment of the present utility model is described with reference to accompanying drawing
The limitation 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 need not pay the various modifications that creative work can make or deform still in protection model of the present utility model
Within enclosing.
Claims (9)
1. a kind of adjustable double nut ball screw assembly, of combined type pretightning force, it is characterised in that：It is by leading screw, left nut, Zuo Ping
Key, left pretension terminal pad, force snesor, ring-type ultra-magnetic deformation actuator, right pretension terminal pad, right flat key and right nut composition
's；
Described leading screw passes through described ring-type ultra-magnetic deformation actuator, is installed in the side of ring-type ultra-magnetic deformation actuator
The left nut coordinated with leading screw, opposite side is provided with the right nut coordinated with leading screw, and described left nut passes through left flat key and a left side
Pretension terminal pad is connected, and left pretension terminal pad is arranged on ring-type ultra-magnetic deformation actuator, and described force snesor is installed
Between ring-type ultra-magnetic deformation actuator and left nut；Described right nut is connected by right flat key with right pretension terminal pad,
Described right pretension terminal pad is arranged on ring-type ultra-magnetic deformation actuator.
2. the adjustable double nut ball screw assembly, of combined type pretightning force as claimed in claim 1, it is characterised in that：The left spiral shell
Mother, including flange and the flange on flange；Screw is evenly distributed with described circumference of flange, is easy to ball screw assembly,
Installation between workbench；Symmetrical two keyways on the circumference of flange, described left flat key is arranged in the keyway.
3. the adjustable double nut ball screw assembly, of combined type pretightning force as claimed in claim 2, it is characterised in that：The described right side
Nut is identical with the structure of left nut, is symmetrically installed on leading screw.
4. the adjustable double nut ball screw assembly, of combined type pretightning force as claimed in claim 2, it is characterised in that：It is described left pre-
Tight terminal pad, right pretension disk each includes disk body, and described disk body is stepped to carry flange, inside there is tubular cavity；Described
The flange of disk body be provided with keyway, keyway is circumferentially symmetric；Described right flat key is arranged in the keyway；Institute
The disk body stated is provided with arc screw.
5. the adjustable double nut ball screw assembly, of combined type pretightning force as claimed in claim 4, it is characterised in that：Described arc
The angle of shape screw is 30 °, in circumferential 120 ° of distributions in disk body great circle card.
6. the adjustable double nut ball screw assembly, of combined type pretightning force as claimed in claim 4, it is characterised in that：Described
The barrel of the disk body tubular cavity of left pretension disk is provided with circular hole.
7. the adjustable double nut ball screw assembly, of combined type pretightning force as claimed in claim 4, it is characterised in that：The power is passed
Sensor, including cylinder and foil gauge, cylinder are the reeded cylinder of an Intermediate Gray, and it is recessed poor outer that foil gauge is uniformly attached to cylinder
On wall, the wire of foil gauge is passed out of left pretension terminal pad circular hole.
8. the adjustable double nut ball screw assembly, of combined type pretightning force as claimed in claim 1, it is characterised in that：The ring-type
Ultra-magnetic deformation actuator, including base, non-magnetic shell, dish type yoke, permanent-magnetic clamp, tubular yoke, coil rack, excitation line
Circle, ring-type giant magnetostrictive material, take-off lever, disk spring, pretension bolt, end cap and soft iron；
The side of described base is provided with long sleeve, and opposite side is provided with short sleeve；Ring-type giant magnetostrictive material is sleeved on base
Long sleeve on；A permanent-magnetic clamp is respectively provided with the two ends of ring-type giant magnetostrictive material；Described coil rack is sleeved on ring
The outer ring of shape giant magnetostrictive material and permanent-magnetic clamp, excitation coil is wrapped on coil rack, winds to increase in dumbbell shaped
The area of big oil cooling radiating；
Dish type yoke is enclosed on permanent-magnetic clamp, and tubular yoke is located at the outer ring of excitation coil, between two dish type yokes, ring
The magnetic circuit that shape giant magnetostrictive material, permanent-magnetic clamp, dish type yoke and the formation of tubular yoke are closed；
The side of a dish type yoke is provided with soft iron wherein；
Described take-off lever is sleeved on described long sleeve, and take-off lever connects through soft iron with permanent-magnetic clamp end, is enclosed on base
Long sleeve on；Disk spring is enclosed on take-off lever, and one end is pressed in the dish type of take-off lever projection, and the other end is equipped with pretension spiral shell
Bolt, pretension bolt is arranged on end cap, and take-off lever, disk spring combine to form ring-type ultra-magnetic deformation actuator with pretension bolt
Prepressing device；
Non-magnetic shell is arranged between base and end cap by trip bolt, and attachment means are by base, end cap, non-magnetic shell
Link into an integrated entity.
9. the adjustable double nut ball screw assembly, of combined type pretightning force as claimed in claim 1, it is characterised in that：Described institute
Force snesor is stated to be sleeved on the short sleeve of base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720353118.1U CN206592507U (en) | 2017-04-06 | 2017-04-06 | A kind of adjustable double nut ball screw assembly, of combined type pretightning force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720353118.1U CN206592507U (en) | 2017-04-06 | 2017-04-06 | A kind of adjustable double nut ball screw assembly, of combined type pretightning force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206592507U true CN206592507U (en) | 2017-10-27 |
Family
ID=60120942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720353118.1U Expired - Fee Related CN206592507U (en) | 2017-04-06 | 2017-04-06 | A kind of adjustable double nut ball screw assembly, of combined type pretightning force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206592507U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006561A (en) * | 2019-05-10 | 2019-07-12 | 南京工程学院 | A kind of device of roller bolt stress in the around-France measurement feed screw nut of stress |
| CN110542505A (en) * | 2019-09-29 | 2019-12-06 | 山东大学 | Device and method for measuring friction moment of ball screw pair and application |
| WO2020213329A1 (en) * | 2019-04-17 | 2020-10-22 | Thk株式会社 | Preload-detectable screw device |
| TWI716263B (en) * | 2020-01-17 | 2021-01-11 | 上銀科技股份有限公司 | Ball screw for immediate measurement and adjustment of preloading |
-
2017
- 2017-04-06 CN CN201720353118.1U patent/CN206592507U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020213329A1 (en) * | 2019-04-17 | 2020-10-22 | Thk株式会社 | Preload-detectable screw device |
| JP2020176668A (en) * | 2019-04-17 | 2020-10-29 | Thk株式会社 | Preload-detectable screw device |
| JP7166216B2 (en) | 2019-04-17 | 2022-11-07 | Thk株式会社 | Screw device with preload detection |
| TWI820322B (en) * | 2019-04-17 | 2023-11-01 | 日商Ｔｈｋ股份有限公司 | Screw device capable of detecting preload |
| US11821497B2 (en) | 2019-04-17 | 2023-11-21 | Thk Co., Ltd | Preload detectable screw device |
| CN110006561A (en) * | 2019-05-10 | 2019-07-12 | 南京工程学院 | A kind of device of roller bolt stress in the around-France measurement feed screw nut of stress |
| CN110542505A (en) * | 2019-09-29 | 2019-12-06 | 山东大学 | Device and method for measuring friction moment of ball screw pair and application |
| TWI716263B (en) * | 2020-01-17 | 2021-01-11 | 上銀科技股份有限公司 | Ball screw for immediate measurement and adjustment of preloading |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 Termination date: 20200406 |