CN204135372U - Flexible magnet rheological tongs system - Google Patents
Flexible magnet rheological tongs system Download PDFInfo
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- CN204135372U CN204135372U CN201420576782.9U CN201420576782U CN204135372U CN 204135372 U CN204135372 U CN 204135372U CN 201420576782 U CN201420576782 U CN 201420576782U CN 204135372 U CN204135372 U CN 204135372U
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- exciting coil
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- 239000000463 material Substances 0.000 claims abstract description 44
- 210000000078 claw Anatomy 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 90
- 238000010276 construction Methods 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 206010034719 Personality change Diseases 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000005426 magnetic field effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model relates to flexible magnet rheological tongs system, belongs to positioning and clamping field.It is made up of external rotating disc, screw thread rotating disk, mobile claw, bevel gear, multiple magnetorheological fixture.It is inner that magnetorheological fixture is fixedly connected on removable claw.Multiple mobile claw in respective grooved guide rail can simultaneously, synchronized close to center.Arrange electric current in two-stage magnet exciting coil, produce magnetic field in fixture inside, magnetorheological materials character changes.Slow driving bevel gear, until limit switch triggers, sends clamping signal.By magnetic Circuit Design, the control of extruded magnetorheological materials magnetic field intensity is converted to the control of magnet exciting coil size of current, and utilizes the characteristic that magnetorheological materials solidifies under magnetic fields, and then control the yield force of magnetorheological materials, realize controlling clamping force.The utility model can adjust location, the centering task that fixture completes zero component, can step-less adjustment clamping force size, absorbs vibrational energy in workpiece process, improves the stressed of workpiece.
Description
Technical field
The utility model relates to a kind of flexible magnet rheological tongs system, belongs to positioning and clamping technical field.
Background technology
In manufacture field, the processing of thin-walled, flexible member is very common work piece.In the industrial production, the conventional clamping force of jig to workpiece is difficult to hold these components, and clamping force is too small, can cause workpiece movable in process thus process unsuccessfully; Clamping force is excessive, can cause workpiece self-deformation, produces considerable influence to the shaped position tolerance after work pieces process.In addition, the vibration that process workpiece produces also may make workpiece not reach dimension precision requirement and cause doing over again or scrapping.Most of fixture is only for processing and the assembling of hard parts, and need the corresponding fixture of specialized designs for more yielding part, this significantly limit the flexibility of production and processing.Along with efficient manufacturing objective is fast pursued by increasing enterprise, the chucking appliance system in machinery industry with more high flexibility arises at the historic moment.Utility model object: the chucking appliance system of a kind of flexibility of utility model, solves the problem clamping force of workpiece being difficult to assurance that existing conventional brace exists.
Utility model content
Be difficult to the shortcoming held for special plain clamp clamping force, the utility model provides a kind of flexible magnet rheological tongs system, can complete the clamping task of zero component and controllably adjust clamping force continuously.
The utility model has following characteristics: flexible magnet rheological tongs system comprises external rotating disc, screw thread rotating disk, mobile claw, bevel gear, magnetorheological fixture; Described screw thread rotating disk is installed on external rotating disc inside, and can rotate relative to external rotating disc; Wherein screw thread rotating disk side is bevel gear structure, and opposite side is face helicitic texture; Described bevel gear to be installed on external rotating disc and to engage with the bevel gear structure of described screw thread rotating disk; Described mobile claw is installed in the grooved guide rail of external rotating disc; Moving blockage grippers has the helicitic texture coordinated with the face helicitic texture of described screw thread rotating disk; Described magnetorheological fixture is installed on mobile claw.
Above-mentioned magnetorheological fixture comprises cylinder body, end cap, first order iron core, second level iron core, third level iron core, first order magnet exciting coil, second level magnet exciting coil, distance rod, chuck; The tubular construction of first order iron core to be longitudinal section be U-shaped; First order magnet exciting coil is installed on first order iron core inwall; Second level iron core is made up of two different cartridge type sections of diameter, and each cartridge type section longitudinal section is U-shaped; Second level magnet exciting coil is installed on second level iron core major diameter drum-shaped section inwall; The tubular construction of third level iron core to be longitudinal section be U-shaped; Second level iron core and third level iron core have central through hole; The above-mentioned first order, the second level, third level iron core are all installed in cylinder body; Wherein first order iron core is positioned at cylinder base; The minor diameter drum-shaped section of second level iron core is placed on first order magnet exciting coil inside, and iron core size diameter outer interface in the second level abuts against on first order iron core top, the minor diameter drum-shaped section end of second level iron core, between first order iron core inner bottom surface and first order magnet exciting coil, form first order chamber; It is inner that third level mandrel bottom is placed on second level magnet exciting coil, and third level iron core top sides is along abutting against on the major diameter drum-shaped section top of second level iron core, between third level iron core minor diameter end face and second level iron core major diameter inner bottom surface, second level magnet exciting coil, form chamber, the second level; Distance rod end has first order thrust disc, has second level thrust disc in the middle part of distance rod; Distance rod is installed in cylinder body, runs through the central through hole of second level iron core and third level iron core; The first order thrust disc of distance rod is arranged in first order chamber, and is filled with magnetorheological materials between first order thrust disc and first order iron core inner bottom surface; Second level thrust disc is arranged in chamber, the second level, and is filled with magnetorheological materials between second level thrust disc and second level iron core major diameter inner bottom surface; End cap is installed on cylinder ends, and distance rod head is through end cap, and chuck is installed on distance rod head, is provided with back-moving spring between chuck and end cap, and chuck is provided with limit switch.In above-mentioned end cap, third level iron core cylinder section, between distance rod, form magnetorheological materials compensated cavity, in it, be filled with magnetorheological materials; Magnetorheological materials compensated cavity is connected by supplementing passage successively with chamber, the second level, first order chamber.
The clamping preparatory stage, regulate the position of magnetorheological fixture in mobile claw interior bone according to the size of caught workpiece, and with adjustment screw, both are solidly fixed.Before starting clamping workpiece, under the effect of back-moving spring being in compressive state, first order thrust disc and second level thrust disc are respectively near the minor diameter end face of second level iron core and the minor diameter end face of third level iron core, and the yield deformation for magnetorheological materials reserves certain stroke.Be placed on by workpiece in interstitial hole that three magnetorheological fixtures are formed, drive bevel gear to drive screw thread rotating disk to rotate, the rotational movement of screw thread rotating disk moves moving linearly in the grooved guide rail of claw portion's rotating disk outside.When the magnetorheological holder contacts being arranged on mobile claw inside is to workpiece, realizes the location of workpiece and complete the location of preliminary clamping and workpiece.The size of current of first order magnet exciting coil in magnetorheological fixture is set, field circuit can be formed: magnetic induction line is successively by the bottom of the magnetorheological materials bottom first order iron core cylindrical wall, second level iron core size diameter end boundary, second level iron core minor diameter cylindrical wall, first order thrust disc, first order thrust disc and between first order mandrel bottom, first order iron core in magnetorheological fixture inside, finally get back to the cylindrical wall of first order iron core, form the magnetic loop closed; The size of current of second level magnet exciting coil in magnetorheological fixture is set, field circuit can be formed: magnetic induction line is successively by the size diameter section boundary of the magnetorheological materials bottom second level iron core enlarged diameter section cylindrical wall, third level iron core, second level thrust disc, second level thrust disc and between the iron core major diameter inner bottom surface of the second level, second level iron core in magnetorheological fixture inside, finally get back to the enlarged diameter section cylindrical wall of second level iron core, form the magnetic loop closed.Because first order thrust disc (second level thrust disc) is constant to the distance sum of first order chamber (chamber, the second level) two end faces, magnetorheological materials place magnetic field intensity does not therebetween change with the position of thrust disc, facilitates magnetic Circuit Design.Magnetorheological materials mechanical property under certain magnetic field effect can change: within the specific limits, its yield stress
δcan increase along with the increase of magnetic field intensity.And magnetic field intensity is determined by magnet exciting coil electric current, therefore can by regulating the size of current of first order magnet exciting coil and second level magnet exciting coil
i, regulate the yield stress of magnetorheological materials
δ (i).Namely yield stress δ is multiplied by thrust disc lifting surface area is yield force
f (i).Slow increase is applied to the driving force on bevel gear, the magnetorheological materials be in first order chamber is subject to the extruding of first order iron core inner bottom surface and first order thrust disc, and the magnetorheological materials in chamber, the second level is subject to the major diameter inner bottom surface of second level iron core and the extruding of second level thrust disc.When the extruding force sum at two places
fbe less than the magnetorheological materials yield force sum at this two place
q (i)time, extruded magnetorheological materials deflection is small, and the distance between end cap and chuck is comparatively large, and limit switch does not trigger.When being applied to the driving force on bevel gear and being increased to certain value, extruding force sum suffered by two grade thrust dish
fwith the magnetorheological materials yield force sum at this two place
q (i)equal, extruded magnetorheological materials deflection increases rapidly, distance between end cap and chuck reduces rapidly, in motion process, clamping force remains unchanged, limit switch triggers, send clamping signal and show that workpiece clamps under the effect of preserved grip power, clamping force equals the yield force sum of extruded magnetorheological materials in two-stage chamber
q (i).External rotating disc can drive whole chucking appliance system to rotate, and then carries out rotary cutting processing to workpiece.Due to the damping action of magnetorheological materials, the vibrational energy in process can be absorbed, improve the stressed of workpiece.Cut off the rotary actuation power supply of external rotating disc, after it stops operating, cut off the coil current of first order magnet exciting coil and second level magnet exciting coil, the yield force sum of extruded magnetorheological materials in two-stage chamber
q (i)almost nil, clamping force is also almost nil, can take out workpiece.
Beneficial effect: the utility model flexiblely can adjust location, the clamping task that fixture completes zero component, by regulating magnet exciting coil size of current step-less adjustment clamping force size before clamping, can absorb vibrational energy in process, improving the stressed of workpiece.Meanwhile, have and clamp circular effect, clamping is convenient, and maintenance, replacing are conveniently.The utility model can regulate clamping force as required, and can send clamping signal when reaching predetermined clamping force; Also self-centering clamping can be realized for cylindrical clamped workpiece.After the shape and size of workpiece have certain change, this tool can also adapt to this change and continue to use.The maximum clamping size adjustable of flexible magnet rheological tongs system, clamping force is stepless adjustable, and has damping antihunt action, improves the stressed of clamped part.
Accompanying drawing explanation
Fig. 1 is magnetorheological chucking appliance system ex-ternal transmission schematic diagram, and arrow the thickest in figure represents power source;
Fig. 2 is flexible magnet rheological tongs system schematic, and arrow the thickest in figure represents power source;
Fig. 3 is single magnetorheological clamp structure figure;
Number in the figure title: 1. magnetorheological materials, 2. screw thread rotating disk, 3. bevel gear, 4. move claw,
5. magnetorheological fixture, 6. screw, 7. external rotating disc, 8. chuck, 9. limit switch, 10. end cap, 11. compensated cavities, 12. cylinder bodies, 13. distance rods, 13a. first order thrust disc, 13b. second level thrust disc, 14. first order magnet exciting coils, 15. second level magnet exciting coils, 16. second level iron cores, 17. first order iron cores, 18. third level iron cores, 19. back-moving springs, 20. chamber, the second level, 21. compensation channels, 22. first order chambeies, A. third level iron core minor diameter end face, B. second level iron core major diameter inner bottom surface, C. second level iron core minor diameter end face, D. first order iron core inner bottom surface.
Detailed description of the invention
With reference to accompanying drawing 1 and Fig. 2, the clamping preparatory stage, regulate the position of magnetorheological fixture 5 in mobile claw 4 interior bone according to the size of caught workpiece, and with adjustment screw 6, both are solidly fixed.Before starting clamping workpiece, under the effect of back-moving spring 19 being in compressive state, first order thrust disc 13a and second level thrust disc 13b is respectively near the minor diameter end face C of second level iron core 16 and minor diameter end face A of third level iron core 18, and the yield deformation for magnetorheological materials reserves certain stroke.Be placed on by workpiece in the interstitial hole of three magnetorheological fixtures formation, drive bevel gear 3 to drive screw thread rotating disk 2 to rotate, the rotational movement of screw thread rotating disk 2 moves claw 4 moving linearly in the grooved guide rail of external rotating disc 7.When the magnetorheological fixture 5 being arranged on mobile claw 4 inside touches workpiece, realize the location of workpiece and complete preliminary clamping.
With reference to accompanying drawing 3, the size of current of first order magnet exciting coil 14 in magnetorheological fixture 5 is set, field circuit can be formed: magnetic induction line is successively by first order iron core 17 cylindrical wall in magnetorheological fixture 5 inside, second level iron core 16 size diameter end boundary, second level iron core 16 minor diameter cylindrical wall, gap between second level iron core 16 minor diameter end face C and first order thrust disc 13a, first order thrust disc 13a, magnetorheological materials between bottom first order thrust disc 13a and bottom first order iron core 17, the bottom of first order iron core 17, finally get back to the cylindrical wall of first order iron core 17, form the magnetic loop closed, the size of current of second level magnet exciting coil 15 in magnetorheological fixture 5 is set, field circuit can be formed: magnetic induction line is successively by the size diameter section boundary of the magnetorheological materials bottom second level iron core 16 enlarged diameter section cylindrical wall, third level iron core 18, second level thrust disc 13b, second level thrust disc 13b and between second level iron core 16 major diameter inner bottom surface B, second level iron core 16 in magnetorheological fixture 5 inside, finally get back to the enlarged diameter section cylindrical wall of second level iron core 16, form the magnetic loop closed.Because first order thrust disc 13a second level thrust disc 13b is constant to the distance sum of 20 two end faces in chamber, the second level, first order chamber 22, magnetorheological materials place magnetic field intensity does not therebetween change with the position of thrust disc, facilitates magnetic Circuit Design.Magnetorheological materials mechanical property under certain magnetic field effect can change: within the specific limits, its yield stress δ can increase along with the increase of magnetic field intensity.And magnetic field intensity is determined by magnet exciting coil electric current, therefore by regulating the size of current i of first order magnet exciting coil 14 and second level magnet exciting coil 15, the yield stress δ (i) of magnetorheological materials can be regulated.Namely yield stress δ is multiplied by thrust disc lifting surface area is yield force f (i).
With reference to accompanying drawing 2 and Fig. 3, slow increase is applied to the driving force on bevel gear 3, the magnetorheological materials be in first order chamber 22 is subject to the extruding of first order iron core 17 inner bottom surface D and first order thrust disc 13a, and the magnetorheological materials in chamber, the second level 20 is subject to the major diameter inner bottom surface B of second level iron core 16 and the extruding of second level thrust disc 13b.When the extruding force sum F at two places is less than magnetorheological materials yield force sum Q (i) at this two place, extruded magnetorheological materials deflection is small, and the distance between end cap 10 and chuck 8 is comparatively large, and limit switch (9) does not trigger.When being applied to the driving force on bevel gear 3 and being increased to certain value, suffered by two grade thrust dish, extruding force sum F is equal with magnetorheological materials yield force sum Q (i) at this two place, extruded magnetorheological materials deflection increases rapidly, distance between end cap 10 and chuck 8 reduces rapidly, limit switch (9) triggers, send clamping signal and show that workpiece clamps under the effect of preserved grip power, clamping force equals yield force sum Q (i) of extruded magnetorheological materials in two-stage chamber.External rotating disc 7 can drive whole chucking appliance system to rotate, and then carries out rotary cutting processing to workpiece.Cut off the rotary actuation power supply of external rotating disc 7, after it stops operating, cut off the coil current of first order magnet exciting coil 14 and second level magnet exciting coil 15, in two-stage chamber, yield force sum Q (i) of extruded magnetorheological materials is almost nil, clamping force is also almost nil, easily can take out workpiece.
Claims (3)
1. a flexible magnet rheological tongs system, is characterized in that:
Comprise external rotating disc (7), screw thread rotating disk (2), mobile claw (4), bevel gear (3), magnetorheological fixture (5);
It is inner that described screw thread rotating disk (2) is installed on external rotating disc (7), and can rotate relative to external rotating disc (7); Wherein screw thread rotating disk (2) side is bevel gear structure, and opposite side is face helicitic texture; Described bevel gear (3) is installed on external rotating disc (7) and goes up and engage with the bevel gear structure of described screw thread rotating disk (2);
Described mobile claw (4) is installed in the grooved guide rail of external rotating disc (7); Mobile claw (4) has the helicitic texture coordinated with the face helicitic texture of described screw thread rotating disk (2);
Described magnetorheological fixture (5) is installed on mobile claw (4).
2. flexible magnet rheological tongs system according to claim 1, is characterized in that:
Above-mentioned magnetorheological fixture (5) comprises cylinder body (12), end cap (10), first order iron core (17), second level iron core (16), third level iron core (18), first order magnet exciting coil (14), second level magnet exciting coil (15), distance rod (13), chuck (8);
First order iron core (17) for longitudinal section be the tubular construction of U-shaped; First order magnet exciting coil (14) is installed on first order iron core (17) inwall;
Second level iron core (16) is made up of two different cartridge type sections of diameter, and each cartridge type section longitudinal section is U-shaped; Second level magnet exciting coil (15) is installed on second level iron core (16) major diameter drum-shaped section inwall;
Third level iron core (18) for longitudinal section be the tubular construction of U-shaped;
Second level iron core (16) and third level iron core (18) have central through hole;
The above-mentioned first order, the second level, third level iron core are all installed in cylinder body (12);
Wherein first order iron core (17) is positioned at cylinder body (12) bottom;
The minor diameter drum-shaped section of second level iron core (16) is placed on first order magnet exciting coil (14) inside, and the outer interface of second level iron core (16) size diameter abuts against on first order iron core (17) top, the minor diameter end face (C) of second level iron core (16), between the inner bottom surface (D) of first order iron core (17) and first order magnet exciting coil (14), form first order chamber (22);
It is inner that third level iron core (18) bottom is placed on second level magnet exciting coil (15), and third level iron core (18) top sides is along abutting against on the major diameter drum-shaped section top of second level iron core (16), between the minor diameter end face (A) of third level iron core (18) and the major diameter inner bottom surface (B) of second level iron core (16), second level magnet exciting coil (15), form chamber, the second level (20);
Distance rod (13) end has first order thrust disc (13a), and distance rod (13) middle part has second level thrust disc (13b); Distance rod (13) is installed in cylinder body (12), runs through the central through hole of second level iron core (16) and third level iron core (18);
The first order thrust disc (13a) of distance rod (13) is arranged in first order chamber (22), and is filled with magnetorheological materials between the inner bottom surface (D) of first order thrust disc (13a) and first order iron core (17);
Second level thrust disc (13b) is arranged in chamber, the second level (20), and is filled with magnetorheological materials between the major diameter inner bottom surface (B) of second level thrust disc (13b) and second level iron core (16);
End cap (10) is installed on cylinder body (12) end, distance rod (13) head is through end cap, chuck (8) is installed on distance rod (13) head, is provided with back-moving spring (19) between chuck (8) and end cap (10), and chuck (8) is provided with limit switch (9).
3. flexible magnet rheological tongs system according to claim 2, is characterized in that: form magnetorheological materials compensated cavity (11) between the cylinder section inwall of above-mentioned end cap (10), third level iron core (18), distance rod (13), be filled with magnetorheological materials in it; Magnetorheological materials compensated cavity (11) is connected by supplementing passage (21) successively with chamber, the second level (20), first order chamber (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576782.9U CN204135372U (en) | 2014-10-08 | 2014-10-08 | Flexible magnet rheological tongs system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576782.9U CN204135372U (en) | 2014-10-08 | 2014-10-08 | Flexible magnet rheological tongs system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204135372U true CN204135372U (en) | 2015-02-04 |
Family
ID=52412090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420576782.9U Withdrawn - After Issue CN204135372U (en) | 2014-10-08 | 2014-10-08 | Flexible magnet rheological tongs system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204135372U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308209A (en) * | 2014-10-08 | 2015-01-28 | 南京航空航天大学 | Magneto-rheological flexible clamp system and clamping method |
| CN104907957A (en) * | 2015-05-25 | 2015-09-16 | 中南大学 | Coaxial photoelectronic device coupling fixture based on magneto-rheological technology |
-
2014
- 2014-10-08 CN CN201420576782.9U patent/CN204135372U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308209A (en) * | 2014-10-08 | 2015-01-28 | 南京航空航天大学 | Magneto-rheological flexible clamp system and clamping method |
| CN104907957A (en) * | 2015-05-25 | 2015-09-16 | 中南大学 | Coaxial photoelectronic device coupling fixture based on magneto-rheological technology |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150204 Effective date of abandoning: 20161019 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |