CN107289823A - Positional servosystem in a kind of Low rigidity performs device and bullet - Google Patents
Positional servosystem in a kind of Low rigidity performs device and bullet Download PDFInfo
- Publication number
- CN107289823A CN107289823A CN201710475072.5A CN201710475072A CN107289823A CN 107289823 A CN107289823 A CN 107289823A CN 201710475072 A CN201710475072 A CN 201710475072A CN 107289823 A CN107289823 A CN 107289823A
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- Prior art keywords
- prong
- performs device
- axle sleeve
- low rigidity
- metal level
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B15/00—Self-propelled projectiles or missiles, e.g. rockets; Guided missiles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
- F42B10/02—Stabilising arrangements
- F42B10/04—Stabilising arrangements using fixed fins
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combustion & Propulsion (AREA)
- Vibration Prevention Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to a kind of Low rigidity performs device and positional servosystem, belong to performs device technical field, on the premise of the accurate and enough structural strength of response quickly and load capacity is ensured, solve in the prior art due to the rigidity of performs device is too high, performs device torsional frequency is easily coupled with the corner frequency of the other frequencies of body or servo-drive system and the problem of produce the unattenuated destructive pneumatic flutter of servo-drive system amplitude.The Low rigidity performs device includes shift fork, motor, the lead screw shaft being connected with the output shaft of motor and the feed screw nut with lead screw shaft fit, and Low rigidity executing agency also includes the splicing sleeve affixed with feed screw nut；Splicing sleeve is located in the prong of shift fork, and prong passes through prong elastic layer and prong metal level and splicing sleeve sliding contact；Contacted in use, the axle sleeve of shift fork is fixed with the rudder wing.The Low rigidity performs device that the present invention is provided can be used for the position transmission of positional servosystem on bullet.
Description
Technical field
The present invention relates to position servo system in a kind of performs device, more particularly to a kind of Low rigidity performs device and bullet
System.
Background technology
Performs device (for example, roller gear, ball-screw, planetary gear, turbine and worm harmonic reduction gearing etc.) is
The important component units of positional servosystem (hereinafter referred to as servo-drive system) on bullet, its at work real-time reception host computer provide
Position signalling, and pass through servomotor drive transmission device respond position signalling.
In servo-drive system, not only performs device needs quickly and accurately to respond position signalling, should also have enough knots
Structure intensity, load capacity and higher power-mass ratio.Therefore, in order to meet the requirement of structural strength and load capacity, lead to
The rigidity of normal performs device is higher so that performs device is typically in uncontrollable state.
But, with the lifting of missile performance, under the coupling of in-flight aerodynamic force, elastic force and inertia force,
The torsional rigidity of performs device is too high so that the torsional frequency of servo-drive system easily bends frequency with the other frequencies of body or servo-drive system
Rate is coupled, so as to produce the unattenuated destructive pneumatic flutter of amplitude.
The content of the invention
In view of above-mentioned analysis, the present invention is intended to provide positional servosystem on a kind of Low rigidity performs device and bullet,
On the premise of the accurate and enough structural strength of response quickly and load capacity is ensured, solve in the prior art due to holding
Rigidity that luggage is put is too high, performs device torsional frequency is easily coupled with the corner frequency of the other frequencies of body or servo-drive system and
The problem of producing the unattenuated destructive pneumatic flutter of servo-drive system amplitude.
The purpose of the present invention is mainly achieved through the following technical solutions：
In a first aspect, the invention provides a kind of Low rigidity performs device, it includes shift fork, motor, the output with motor
The lead screw shaft of axle connection and the feed screw nut with lead screw shaft fit, it is characterised in that Low rigidity executing agency also includes and silk
The affixed splicing sleeve of thick stick nut；Splicing sleeve is located in the prong of shift fork, and prong passes through prong elastic layer and prong metal level and branch
Bearing sleeve sliding contact；Contacted in use, the axle sleeve of shift fork is fixed with the rudder wing.
Further, prong elastic layer and prong metal level are sequentially formed at the prong surface relative with splicing sleeve, prong
Metal level is contacted with splicing sleeve；Or, prong elastic layer and prong metal level are sequentially formed at the splicing sleeve table relative with prong
Face, prong metal level is contacted with prong.
Further, the axle sleeve of shift fork is contacted by axle sleeve elastic layer and axle sleeve metal level with the rudder wing.
Further, axle sleeve elastic layer and axle sleeve metal level are sequentially formed at the axle sleeve surface relative with the rudder wing, axle sleeve gold
Category layer is contacted with the rudder wing；Or, axle sleeve elastic layer and axle sleeve metal level are sequentially formed at the rudder wing surface relative with axle sleeve, axle sleeve
Metal level is contacted with axle sleeve.
Further, the thickness of prong elastic layer is 0.5mm~2mm, and the thickness of prong metal level is 0.5mm~2mm；Axle
The thickness for covering elastic layer is 0.5mm~2mm, and the thickness of axle sleeve metal level is 0.5mm~2mm；.
Further, the modulus of elasticity of prong elastic layer is 3GPa~4GPa；The modulus of elasticity of axle sleeve elastic layer is 3GPa
~4GPa.
Further, prong elastic layer is made up of polyurethane or polyimides；Axle sleeve elastic layer is sub- by polyurethane or polyamides
Amine is made.
Further, Low rigidity performs device also includes train of reduction gears；The output shaft of motor by train of reduction gears with
Lead screw shaft is connected.
Further, the speed reducing ratio of train of reduction gears is 5~10.
Second aspect, the invention provides a kind of positional servosystem, it includes above-mentioned Low rigidity performs device.
Compared with prior art, the present invention has the beneficial effect that：
A) agent structure of Low rigidity performs device that the present invention is provided is basically unchanged, its response speed, response accuracy,
Structural strength and load capacity are basically unchanged.
B) the Low rigidity performs device that provides of the present invention can reduce the rigidity of whole performs device, itself intrinsic frequency with
And torsion mode, improve mode of flexural vibration so that itself torsional frequency of performs device can avoid the other frequencies of body and from
Body corner frequency, reduce itself torsional frequency and itself corner frequency of performs device, itself torsional frequency of performs device with
The situation that the frequency of the other parts of body is coupled, is ensureing the accurate and enough structural strength of response quickly and load energy
On the premise of power, solve in the prior art because the rigidity of performs device is too high, performs device torsional frequency easily and body
The corner frequency of other frequencies or servo-drive system couples and produces asking for the unattenuated destructive pneumatic flutter of servo-drive system amplitude
Topic.
C) the Low rigidity performs device that provides of the present invention is in some specific areas of Aero-Space (position servo system on such as bullet
System) there is the application value of reality.
Other features and advantages of the present invention will be illustrated in the following description, also, the partial change from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is only used for showing the purpose of specific embodiment, and is not considered as limitation of the present invention, in whole accompanying drawing
In, identical reference symbol represents identical part.
Fig. 1 is the structural representation of the Low rigidity performs device of the embodiment of the present invention one；
Fig. 2 is the structural representation of another structure of the Low rigidity performs device of the embodiment of the present invention one.
Embodiment
The preferred embodiments of the present invention are specifically described below in conjunction with the accompanying drawings, wherein, accompanying drawing constitutes the application part, and
It is used for the principle for explaining the present invention together with embodiments of the present invention.
Embodiment one
A kind of Low rigidity performs device is present embodiments provided, referring to Fig. 1 to Fig. 2, it includes shift fork 1, motor 2 and electricity
The lead screw shaft 3 of the output shaft connection of machine 2, feed screw nut 4 and the splicing sleeve affixed with feed screw nut 4 with the fit of lead screw shaft 3
5.Wherein, splicing sleeve 5 is located in the prong 101 of shift fork 1, and prong 101 passes through prong elastic layer 6 and prong metal level 7 and supporting
Cover 5 sliding contacts；Contacted in use, the axle sleeve 102 of shift fork 1 coordinates with the rudder wing 8.
During implementation, the output shaft of motor 2 drives lead screw shaft 3 to rotate, and lead screw shaft 3 with feed screw nut 4 by coordinating, by leading screw
The convert rotational motion of axle 3 is the horizontal movement of the axis direction of feed screw nut 4 and splicing sleeve 5 along lead screw shaft 3 so that splicing sleeve
5 promotion shift forks 1 are rotated, so as to drive the rudder wing 8 to deflect.
Compared with prior art, the agent structure for the Low rigidity performs device that the present embodiment is provided is basically unchanged, therefore, its
Response speed, response accuracy, structural strength and load capacity are basically unchanged.Meanwhile, above-mentioned Low rigidity performs device is in support
Prong elastic layer 6 is set between axle 5 and prong 101, because support shaft 5 and prong 101 are typically constructed of metal, metal and elasticity
Contact stiffness between layer is low compared to the contact stiffness between metal and metal, so as to reduce the firm of whole performs device
Degree, itself intrinsic frequency and torsion mode, improve mode of flexural vibration so that itself torsional frequency of performs device can avoid bullet
The other frequencies of body and itself corner frequency, reduce itself torsional frequency and itself corner frequency, performs device of performs device
Itself torsional frequency situation about being coupled with the frequency of the other parts of body, ensureing that response quickly is accurate and enough
On the premise of structural strength and load capacity, solve in the prior art because the rigidity of performs device is too high, performs device
Torsional frequency easily couples with the corner frequency of the other frequencies of body or servo-drive system and produces unattenuated broken of servo-drive system amplitude
The problem of bad property pneumatic flutter.It is above-mentioned low firm especially at some specific areas of Aero-Space (positional servosystem on such as bullet)
Spending performs device has the application value of reality.
For the position of prong elastic layer 6 and prong metal level 7, specifically, referring to Fig. 1, prong elastic layer 6 and prong
Metal level 7 can be sequentially formed at the surface relative with splicing sleeve 5 of prong 101, and prong metal level 7 is contacted with splicing sleeve 5.This
Sample, during splicing sleeve 5 promotes shift fork 1 to rotate, prong metal level 7 and the phase mutual friction of splicing sleeve 5, on improving
State the wearability and service life of performs device.
It should be noted that in the prior art, the existing contact stiffness between prong 101 and splicing sleeve 5 is 35000N/mm
~48000N/mm, correspondence single order torsional frequency is 90Hz~120Hz.By being set on the surface relative with splicing sleeve 5 of prong 101
Put prong elastic layer 6 and prong metal level 7, the contact stiffness between prong 101 and splicing sleeve 5 can be reduced to 5600N/mm~
26000N/mm, single order torsional frequency is reduced to 41Hz~80Hz, and fall is obvious.
Similarly, referring to Fig. 2, prong elastic layer 6 and prong metal level 7 can also be sequentially formed at splicing sleeve 5 and prong
101 relative surfaces, prong metal level 7 is contacted with prong 101.
In order to further reduce the rigidity, itself intrinsic frequency and torsion mode of whole performs device, bending die is improved
State, the axle sleeve 102 of shift fork 1 can be contacted by axle sleeve elastic layer 9 and axle sleeve metal level 10 with the rudder wing 8.Equally it is because metal
Rigidity between elastic layer is low compared to the rigidity between metal and metal, and prong is set between support shaft 5 and prong 101
While elastic layer 6, axle sleeve elastic layer 9 is also provided with axle sleeve 102 and the rudder wing 8 of shift fork 1, whole execution can be further reduced
The rigidity of device, itself intrinsic frequency and torsion mode, improve mode of flexural vibration.
For the position of axle sleeve elastic layer 9 and axle sleeve metal level 10, specifically, referring to Fig. 1, axle sleeve elastic layer 9 and axle
Set metal level 10 can be sequentially formed at the surface relative with the rudder wing 8 of axle sleeve 102, and axle sleeve metal level 10 is contacted with the rudder wing 8；Or
Person, referring to Fig. 2, axle sleeve elastic layer 9 and axle sleeve metal level 10 can also be sequentially formed at the surface relative with axle sleeve 102 of the rudder wing 9,
Axle sleeve metal level 10 is contacted with axle sleeve 102.
In order to ensure that response speed, response accuracy, structural strength and the load capacity of above-mentioned performs device are basically unchanged,
The thickness of prong elastic layer 6 should be in the range of 0.5mm~2mm, and the thickness of axle sleeve elastic layer 9 should be 0.5mm~2mm's
In the range of.Meanwhile, in order to ensure the wearability of above-mentioned performs device, the thickness of prong metal level 7 should be 0.5mm~2mm's
In the range of, the thickness of axle sleeve metal level 10 should be in the range of 0.5mm~2mm.
In order to further reduce the torsion mode of whole performs device, mode of flexural vibration, the springform of prong elastic layer 6 are improved
Amount can be 3GPa~4GPa, and the modulus of elasticity of axle sleeve elastic layer 9 is 3GPa~4GPa.By prong elastic layer 6 and axle sleeve elasticity
The modulus of elasticity of layer 9 is limited within the above range, can further reduce the torsion mode of whole performs device, improves bending die
State, so as to further avoid itself torsional frequency and itself corner frequency, itself torsional frequency of performs device of performs device
Coupled with the frequency of the other parts of body.
Exemplarily, on the premise of above-mentioned modulus of elasticity requirement is met, prong elastic layer 6 and axle sleeve elastic layer 9 can be with
It is made of polyurethane or polyimides.
Under normal circumstances, above-mentioned Low rigidity performs device also includes train of reduction gears 11, exemplarily, train of reduction gears 11
Speed reducing ratio be 5~10.So, the output shaft of motor 2 is connected by train of reduction gears 11 with lead screw shaft 3, so as to by electricity
The output speed of machine 2 is adjusted to suitable rotating speed by train of reduction gears 11, to drive lead screw shaft 3 to rotate.Specifically, it is above-mentioned to subtract
One-stage gear 1101 that fast gear train 11 can include being connected with the output shaft of motor 2, engaged with one-stage gear 1101 two grades
Gear 1102 and the tertiary gear 1103 engaged with secondary gear 1102, output shaft and the lead screw shaft 3 of tertiary gear 1103 connect
Connect.
Because above-mentioned performs device is needed to be applied on bullet in positional servosystem, it is contemplated that the response speed of structure, sound
The accuracy and the compact of structure answered, above-mentioned motor 2 can be brushless servo motor.Brushless servo motor has volume
The features such as small, lightweight, fast big, response of exerting oneself, speed height, small inertia, smooth rotation and stable torque so that using brushless
The performs device of servomotor driving is more applicable for positional servosystem on bullet.
In view of the requirement of installation, above-mentioned performs device also include located at the two ends of lead screw shaft 3 leading screw bearing 12 and with
The secondary gear bearing 13 of the gear shaft connection of secondary gear 1102, wherein leading screw bearing 12 are used to support lead screw shaft 3, secondary gear
Wheel bearing 13 is used to support secondary gear 1102.
Embodiment two
Positional servosystem on a kind of bullet is present embodiments provided, it includes the Low rigidity performs device in embodiment one.
Compared with prior art, on the bullet that the present embodiment is provided in the beneficial effect and embodiment one of positional servosystem
The beneficial effect of Low rigidity performs device is identical, will not be repeated here.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.
Claims (10)
1. a kind of Low rigidity performs device, including shift fork, motor, the lead screw shaft being connected with the output shaft of the motor and with institute
State the feed screw nut of lead screw shaft fit, it is characterised in that the Low rigidity executing agency also includes the branch affixed with feed screw nut
Bearing sleeve；
The splicing sleeve is located in the prong of the shift fork, and the prong passes through prong elastic layer and prong metal level and splicing sleeve
Sliding contact；
Contacted in use, the axle sleeve of the shift fork is fixed with the rudder wing.
2. Low rigidity performs device according to claim 1, it is characterised in that the prong elastic layer and prong metal level
The prong surface relative with the splicing sleeve is sequentially formed at, the prong metal level is contacted with the splicing sleeve；
Or, the prong elastic layer and prong metal level are sequentially formed at the splicing sleeve surface relative with the prong,
The prong metal level is contacted with the prong.
3. Low rigidity performs device according to claim 1, it is characterised in that the axle sleeve of the shift fork passes through axle sleeve elasticity
Layer and axle sleeve metal level are contacted with the rudder wing.
4. Low rigidity performs device according to claim 3, it is characterised in that the axle sleeve elastic layer and axle sleeve metal level
The axle sleeve surface relative with the rudder wing is sequentially formed at, the axle sleeve metal level is contacted with the rudder wing；
Or, the axle sleeve elastic layer and axle sleeve metal level are sequentially formed at the rudder wing surface relative with the axle sleeve, institute
Axle sleeve metal level is stated to contact with the axle sleeve.
5. Low rigidity performs device according to claim 3, it is characterised in that the thickness of the prong elastic layer is
0.5mm~2mm, the thickness of the prong metal level is 0.5mm~2mm；
The thickness of the axle sleeve elastic layer is 0.5mm~2mm, and the thickness of the axle sleeve metal level is 0.5mm~2mm；.
6. Low rigidity performs device according to claim 3, it is characterised in that the modulus of elasticity of the prong elastic layer is
3GPa~4GPa；
The modulus of elasticity of the axle sleeve elastic layer is 3GPa~4GPa.
7. Low rigidity performs device according to claim 6, it is characterised in that the prong elastic layer is by polyurethane or poly-
Acid imide is made；
The axle sleeve elastic layer is made up of polyurethane or polyimides.
8. the Low rigidity performs device according to any one of claim 1~7, it is characterised in that the Low rigidity performs dress
Putting also includes train of reduction gears；
The output shaft of the motor is connected by train of reduction gears with the lead screw shaft.
9. Low rigidity performs device according to claim 8, it is characterised in that the speed reducing ratio of the train of reduction gears is 5
~10.
10. positional servosystem on a kind of bullet, it is characterised in that positional servosystem includes such as claim 1~9 on the bullet
Low rigidity performs device described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475072.5A CN107289823B (en) | 2017-06-21 | 2017-06-21 | Positional servosystem in a kind of Low rigidity executive device and bullet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475072.5A CN107289823B (en) | 2017-06-21 | 2017-06-21 | Positional servosystem in a kind of Low rigidity executive device and bullet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107289823A true CN107289823A (en) | 2017-10-24 |
| CN107289823B CN107289823B (en) | 2019-02-22 |
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ID=60097407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710475072.5A Active CN107289823B (en) | 2017-06-21 | 2017-06-21 | Positional servosystem in a kind of Low rigidity executive device and bullet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107289823B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286918A (en) * | 2017-12-29 | 2018-07-17 | 中国航天空气动力技术研究院 | A kind of how shaft-driven annular rudder control unit |
| CN109505940A (en) * | 2018-12-05 | 2019-03-22 | 兰州飞行控制有限责任公司 | A kind of rocker-arm angular displacement actuator |
| CN110254691A (en) * | 2019-07-05 | 2019-09-20 | 贵州航天控制技术有限公司 | A kind of single steering engine structure and even distribution type electric steering engine |
| CN110455132A (en) * | 2019-08-30 | 2019-11-15 | 贵州航天控制技术有限公司 | A kind of small-sized integral type combination control mechanism |
| CN111186562A (en) * | 2020-01-16 | 2020-05-22 | 湖北三江航天红峰控制有限公司 | Servo mechanism capable of bearing radial load |
| CN111664756A (en) * | 2020-05-12 | 2020-09-15 | 上海机电工程研究所 | Structure suitable for air rudder and steering engine system connection |
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| CN203271992U (en) * | 2013-05-20 | 2013-11-06 | 常州市长昊机械有限公司 | Shifting fork |
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| US6827310B1 (en) * | 2003-09-22 | 2004-12-07 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus and method for fin actuation in a portable missile |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286918A (en) * | 2017-12-29 | 2018-07-17 | 中国航天空气动力技术研究院 | A kind of how shaft-driven annular rudder control unit |
| CN109505940A (en) * | 2018-12-05 | 2019-03-22 | 兰州飞行控制有限责任公司 | A kind of rocker-arm angular displacement actuator |
| CN110254691A (en) * | 2019-07-05 | 2019-09-20 | 贵州航天控制技术有限公司 | A kind of single steering engine structure and even distribution type electric steering engine |
| CN110455132A (en) * | 2019-08-30 | 2019-11-15 | 贵州航天控制技术有限公司 | A kind of small-sized integral type combination control mechanism |
| CN111186562A (en) * | 2020-01-16 | 2020-05-22 | 湖北三江航天红峰控制有限公司 | Servo mechanism capable of bearing radial load |
| CN111664756A (en) * | 2020-05-12 | 2020-09-15 | 上海机电工程研究所 | Structure suitable for air rudder and steering engine system connection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107289823B (en) | 2019-02-22 |
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