CN102274989A - Boring bar device based on driving of giant magnetostriction material - Google Patents
Boring bar device based on driving of giant magnetostriction material Download PDFInfo
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- CN102274989A CN102274989A CN2011101907050A CN201110190705A CN102274989A CN 102274989 A CN102274989 A CN 102274989A CN 2011101907050 A CN2011101907050 A CN 2011101907050A CN 201110190705 A CN201110190705 A CN 201110190705A CN 102274989 A CN102274989 A CN 102274989A
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- boring bar
- excitation mechanism
- giant magnetostrictive
- magnetostrictive material
- briquetting
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention discloses a boring bar device based on the driving of a giant magnetostriction material, which comprises an excitation mechanism bracket, an excitation mechanism and an embedded boring bar, wherein the excitation mechanism bracket is fixed on a base of a machine tool; the excitation mechanism is vertical to the direction of a guide rail of the machine tool and is fixed on the excitation mechanism bracket; the embedded boring bar is tied at an central hole of the excitation mechanism; and a giant magnetostriction material block in the embedded boring bar is located in the central hole of the excitation mechanism. The boring bar device based on the driving of the giant magnetostriction material provided by the invention is used for reducing the inductance of an excitation coil for easily driving the excitation coil, reducing the influence on the giant magnetostriction material block caused by the heating of the excitation coil, enabling a magnetic field of the giant magnetostriction material block to be more uniform under the magnetic conducting actions of a magnetic conducting block and a pre-pressing block, and adjusting a pre-pressing force on the giant magnetostriction material block by the pre-pressing block and a pre-pressing force adjusting bolt.
Description
Technical field
The present invention relates to a kind of boring bar device, especially relate to a kind of boring bar device that drives based on ultra-magnetic telescopic.
Background technology
In the modern manufacturing industry, for the stressed hole part that is heated more serious in the use, as engine piston noncircular pin hole and cylinder-bore etc., in order to alleviate the distortion that produces in the use, prolong its service life, be processed into non-cylindrical hole, this requires in the boring process, except two motions of feeding of the rotation of cutter and workpiece, the boring cutter head also must additional radial feed motion.Because the precision of non-cylindrical hole is very high, common boring cutter can't be realized micro-radial feed motion, and the boring bar that drives based on giant magnetostrictive material can satisfy this requirement.The existing boring bar feature that drives based on giant magnetostrictive material is, embed a magnetostriction materials piece at the boring bar axial direction, magnetostriction materials firmly are connected in both ends of the surface with boring bar soon, the coil brace that is wound with magnet exciting coil is enclosed within the outer boring bar part of magnetostriction materials piece, and the maintenance radial clearance, magnet exciting coil is installed in the hole of carrier base.Its operation principle is, feeds electric current on magnet exciting coil, and different size of current can produce different magnetic field intensities, the magnetostriction materials piece promotes boring bar, thereby make boring bar produce different flexural deformation, realize the micro-radial feed motion of boring cutter, satisfy precision machined needs.Adopt this structure, the magnet exciting coil inductance is big, being difficult to constant current drives, and magnet exciting coil is near the giant magnetostrictive material piece, easily with heat transferred giant magnetostrictive material piece, influence the elongation precision of giant magnetostrictive material piece, giant magnetostrictive material piece two ends directly are connected with boring bar simultaneously, and precompression can't be regulated.
Summary of the invention
In order to overcome the deficiency that has now based on the non-cylindrical hole boring boring bar of giant magnetostrictive actuator, the object of the present invention is to provide a kind of boring bar device that drives based on ultra-magnetic telescopic, this boring bar device is constant current driving easily not only, reduce the heat affecting of magnet exciting coil, and can regulate the precompression of giant magnetostrictive material piece the giant magnetostrictive material piece.
The technical solution adopted for the present invention to solve the technical problems is:
It comprises excitation mechanism support, excitation mechanism, embedded boring bar; The excitation mechanism support is fixed on the lathe base, and excitation mechanism is fixed on the excitation mechanism support perpendicular to the machine tool guideway direction, and embedded boring bar is enclosed within the excitation mechanism central hole, and the giant magnetostrictive material piece in the embedded boring bar is positioned at the excitation mechanism centre bore.
Described excitation mechanism support comprises base and two cross fixed blocks; Base epirelief table top both sides are vertically installed with the cross fixed block respectively, and the cross fixed block is a non-magnet_conductible material.
Described excitation mechanism comprises the magnetic guiding loop that plural magnet exciting coil and magnetic conduction sheet are formed by stacking; Plural magnet exciting coil is wound in the two ends of magnetic guiding loop; Circular hole is opened at the magnetic guiding loop middle part, and the both sides of described circular hole have square hole, and described two cross fixed blocks, two external parts embed respectively in the described square hole, and embedded boring bar is enclosed within the circular hole of magnetic guiding loop middle part and keeps radial clearance.
Described embedded boring bar comprises boring bar, magnetic inductive block, giant magnetostrictive material piece, pre-briquetting and precompression adjustment screw; Near having axial groove on the boring bar face of cylinder of headstock one end, in the outside axial groove of headstock one end, set gradually magnetic inductive block, giant magnetostrictive material piece and pre-briquetting, on the pre-briquetting precompression adjustment screw is housed.Described pre-briquetting is semicircle, the center has bellmouth, the bellmouth two sides have the curved groove of a perforation, the head of described precompression adjustment screw has the conical surface identical with described bellmouth, the precompression adjustment screw is passed pre-briquetting bellmouth, is screwed into to lock the giant magnetostrictive material piece in the boring bar axial groove screwed hole and regulate precompression again.
The beneficial effect that the present invention has is:
Reduce the inductance of magnet exciting coil, magnet exciting coil is driven easily; Reduce the influence of magnet exciting coil heating to the giant magnetostrictive material piece; By the magnetic conduction effect of magnetic inductive block, make giant magnetostrictive material piece magnetic field of living in more even with pre-briquetting; Can regulate the precompression of giant magnetostrictive material piece by pre-briquetting and precompression adjustment screw.
Description of drawings
Fig. 1 is an overall structure principle schematic of the present invention.
Fig. 2 is the structural principle schematic diagram of embedded boring bar.
Fig. 3 is the front view of Fig. 2.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is the magnetic inductive block structural representation.
Fig. 6 is pre-briquette structure schematic diagram.
Fig. 7 is an excitation mechanism structural principle schematic diagram.
Fig. 8 is an excitation mechanism supporting structure principle schematic.
Among the figure: 1. embedded boring bar, 2. excitation mechanism, 3. excitation mechanism support, 4. boring bar, 5 magnetic inductive blocks, 6. giant magnetostrictive material piece, 7. pre-briquetting, 8. precompression is regulated bolt, 9. magnetic guiding loop, 10. magnet exciting coil, 11. bases, 12. cross fixed blocks.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, the present invention includes excitation mechanism support 3, excitation mechanism 2, embedded boring bar 1; Excitation mechanism support 3 is fixed on the lathe base, excitation mechanism 2 is fixed on the excitation mechanism support 3 perpendicular to the machine tool guideway direction, embedded boring bar 1 is enclosed within excitation mechanism 2 central hole, and the giant magnetostrictive material piece 6 in the embedded boring bar 1 is positioned at excitation mechanism 2 centre bores.
As Fig. 2, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, described embedded boring bar 1 comprises boring bar 4, semicircle magnetic inductive block 5, giant magnetostrictive material piece 6, pre-briquetting 7 and precompression adjustment screw 8; Near having axial groove on boring bar 4 faces of cylinder of headstock one end, in the outside axial groove of headstock one end, set gradually magnetic inductive block 5, giant magnetostrictive material piece 6 and pre-briquetting 7, on the pre-briquetting 7 precompression adjustment screw 8 is housed.Described pre-briquetting 7 is semicircle, the center has bellmouth, the bellmouth two sides have the curved groove of a perforation, the head of described precompression adjustment screw 8 has the conical surface identical with described bellmouth, precompression adjustment screw 8 is passed pre-briquetting 7 bellmouths, be screwed into and lock giant magnetostrictive material piece 6 in the boring bar 4 axial groove screwed holes and regulate precompression, the projection of semicircular magnetic inductive block 5 and semicircular pre-briquetting 7 is pressed in the two ends of giant magnetostrictive material piece 6 respectively.
As shown in Figure 7, described excitation mechanism 2 comprises the magnetic guiding loop 9 that four magnet exciting coils 10 and magnetic conduction sheet are formed by stacking; Four magnet exciting coil 10 symmetries are wound in the two ends of magnetic guiding loop 9; Circular hole is opened at magnetic guiding loop 9 middle parts, and the both sides of described circular hole have square hole, and 12 liang of external parts of described two cross fixed blocks embed respectively in the described square hole, and embedded boring bar 1 is enclosed within the magnetic guiding loop 9 middle part circular holes and keeps radial clearance.
As shown in Figure 8, described excitation mechanism support 3 comprises base 11 and two cross fixed blocks 12; Base 11 epirelief table top both sides are vertically installed with the cross fixed block respectively.The cross fixed block adopts non-magnet_conductible material.
Operation principle of the present invention is as follows:
Giant magnetostrictive material piece 6 produces elongation strain along magnetic line of force direction under the effect in magnetic field.Feed electric current at magnet exciting coil 10, the magnetic field that produces forms uniform magnetic field by magnetic guiding loop 9, magnetic inductive block 5 and pre-briquetting 7 at giant magnetostrictive material piece 6 places, giant magnetostrictive material piece 6 produces elongation strain, thereby make boring bar produce flexural deformation, exciting current is bigger, and the deflection of boring bar is also just big.Can process non-cylindrical hole by non-cylindrical hole processing request control exciting current size.Along with being screwed into of precompression adjustment screw, the conical surface of screw head passes through pre-briquetting tapered centre hole with pre-briquetting spreading, compress the giant magnetostrictive material piece, by the size that extent control compresses giant magnetostrictive material piece precompression that is screwed into of control precompression adjustment screw.
Claims (5)
1. a boring bar device that drives based on giant magnetostrictive material is characterized in that: comprise excitation mechanism support (3), excitation mechanism (2) and embedded boring bar (1); Excitation mechanism support (3) is fixed on the lathe base, excitation mechanism (2) is fixed on the excitation mechanism support (3) perpendicular to the machine tool guideway direction, embedded boring bar (1) is enclosed within excitation mechanism (2) central hole, and the giant magnetostrictive material piece in the embedded boring bar (1) is positioned at excitation mechanism (2) centre bore.
2. a kind of boring bar device that drives based on giant magnetostrictive material according to claim 1, it is characterized in that: described excitation mechanism support (3) comprises base (11) and two cross fixed blocks; Base (11) epirelief table top both sides are vertically installed with the cross fixed block respectively, and the cross fixed block is a non-magnet_conductible material.
3. a kind of boring bar device that drives based on giant magnetostrictive material according to claim 1, it is characterized in that: described excitation mechanism (2) comprises the magnetic guiding loop (9) that plural magnet exciting coil and magnetic conduction sheet are formed by stacking; Plural magnet exciting coil is wound in the two ends of magnetic guiding loop (9); Circular hole is opened at magnetic guiding loop (9) middle part, and the both sides of described circular hole have square hole, and described two cross fixed blocks, two external parts embed respectively in the described square hole, and embedded boring bar (1) is enclosed within the circular hole of magnetic guiding loop (9) middle part and keeps radial clearance.
4. a kind of boring bar device that drives based on giant magnetostrictive material according to claim 1 is characterized in that: described embedded boring bar (1) comprises boring bar (4), magnetic inductive block (5), giant magnetostrictive material piece (6), pre-briquetting (7) and precompression adjustment screw (8); Have axial groove near on boring bar (4) face of cylinder of headstock one end, in the outside axial groove of headstock one end, set gradually magnetic inductive block (5), giant magnetostrictive material piece (6) and pre-briquetting (7), on the pre-briquetting (7) precompression adjustment screw (8) is housed.
5. a kind of boring bar device that drives based on giant magnetostrictive material according to claim 4, it is characterized in that: described pre-briquetting (7) is for semicircle, the center has bellmouth, the bellmouth two sides have the curved groove of a perforation, the head of precompression adjustment screw (8) has the conical surface identical with described bellmouth, precompression adjustment screw (8) is passed pre-briquetting (7) bellmouth, is screwed into to lock giant magnetostrictive material piece (6) in boring bar (4) the axial groove screwed hole and regulate precompression again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101907050A CN102274989B (en) | 2011-07-08 | 2011-07-08 | Boring bar device based on driving of giant magnetostriction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101907050A CN102274989B (en) | 2011-07-08 | 2011-07-08 | Boring bar device based on driving of giant magnetostriction material |
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| Publication Number | Publication Date |
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| CN102274989A true CN102274989A (en) | 2011-12-14 |
| CN102274989B CN102274989B (en) | 2012-11-07 |
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| CN2011101907050A Expired - Fee Related CN102274989B (en) | 2011-07-08 | 2011-07-08 | Boring bar device based on driving of giant magnetostriction material |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5307690A (en) * | 1991-07-29 | 1994-05-03 | Kubota Corporation | Temperature compensating device for torque measuring apparatus |
| JPH075055A (en) * | 1993-06-16 | 1995-01-10 | Yaskawa Electric Corp | Magneto-strictive strain sensor |
| CN2375399Y (en) * | 1999-05-31 | 2000-04-26 | 浙江大学 | Boring bar of magnetostriction material structure |
| CN1256991A (en) * | 1998-12-17 | 2000-06-21 | 中国人民解放军国防科学技术大学 | Digital controlled boring radial feeding method and device thereof |
| CN1743111A (en) * | 2005-09-22 | 2006-03-08 | 山东大学 | Boring mill for working special-shaped curved hole |
| CN202147022U (en) * | 2011-07-08 | 2012-02-22 | 浙江大学 | Boring bar device based on driving of giant magnetostriction material |
-
2011
- 2011-07-08 CN CN2011101907050A patent/CN102274989B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5307690A (en) * | 1991-07-29 | 1994-05-03 | Kubota Corporation | Temperature compensating device for torque measuring apparatus |
| JPH075055A (en) * | 1993-06-16 | 1995-01-10 | Yaskawa Electric Corp | Magneto-strictive strain sensor |
| CN1256991A (en) * | 1998-12-17 | 2000-06-21 | 中国人民解放军国防科学技术大学 | Digital controlled boring radial feeding method and device thereof |
| CN2375399Y (en) * | 1999-05-31 | 2000-04-26 | 浙江大学 | Boring bar of magnetostriction material structure |
| CN1743111A (en) * | 2005-09-22 | 2006-03-08 | 山东大学 | Boring mill for working special-shaped curved hole |
| CN202147022U (en) * | 2011-07-08 | 2012-02-22 | 浙江大学 | Boring bar device based on driving of giant magnetostriction material |
Non-Patent Citations (1)
| Title |
|---|
| 邬义杰 等: "基于超磁致伸缩材料的活塞异形销孔加工原理研究", 《浙江大学学报(工学版)》, vol. 38, no. 9, 30 September 2004 (2004-09-30), pages 1185 - 1189 * |
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| CN102274989B (en) | 2012-11-07 |
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