CN109571110B - Micro-feeding device of piezoelectric ceramic matched lever mechanism for processing piston pin hole - Google Patents
Micro-feeding device of piezoelectric ceramic matched lever mechanism for processing piston pin hole Download PDFInfo
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- CN109571110B CN109571110B CN201811360435.1A CN201811360435A CN109571110B CN 109571110 B CN109571110 B CN 109571110B CN 201811360435 A CN201811360435 A CN 201811360435A CN 109571110 B CN109571110 B CN 109571110B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/28—Electric drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/067—Blocks with collet chucks
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
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Abstract
The utility model provides a little feed device that is used for piezoceramics cooperation lever mechanism of piston pinhole processing, which comprises a base, the handle of a knife, boring cutter and feed piezoceramics driver and back-off piezoceramics driver, handle of a knife one end is planted in the base, the other end and boring cutter fixed connection, the lever axle passes the base around, the handle of a knife links together handle of a knife and base, and make the handle of a knife rotatory along the lever axle, feed piezoceramics driver and back-off piezoceramics driver wear the upper and lower both sides at the base through pretension screw adjustable respectively, feed piezoceramics driver and back-off piezoceramics driver set up with the lever axle is perpendicular and the inner end offsets with the upper and lower both sides that the handle of a knife is close to the afterbody respectively, when the feed or fall back, feed piezoceramics driver and back-off piezoceramics driver's deformation displacement changes the radial. The invention has the characteristics of simple structure, easy processing and manufacturing, high precision, high resolution and quick response.
Description
Technical Field
The invention relates to a micro-feeding device of a piezoelectric ceramic matching lever mechanism, in particular to a micro-feeding device of a piezoelectric ceramic matching lever mechanism for processing a piston pin hole.
Background
The piston operates in a harsh environment of high temperature, high pressure and periodic impacts, and the pressure of the engine combustion gases can cause uneven deformation of the piston. In order to enable the external shape of the piston to be adaptive to the cylindrical cylinder body in a working state, the piston pin hole is adaptive to the piston pin, and the bearing capacity of a piston connecting rod part of the engine is improved. The contour error of a generatrix on the side of the pin hole is not more than 3 mu m, the taper of a line segment lift is not more than 1:1000, namely, the boring cutter is axially fed for 1mm, and is radially fed for 1 mu m, so that a micro-feeding device with high precision and high resolution needs to be ground to ensure the shape precision of the piston pin hole.
According to the investigation, in the Chinese patent CN 103481106B, the prior patent is a piezoelectric ceramic type micro-feeding device of an ultra-precise fly-cutting processing machine tool, a feeding shaft is processed with a thin-wall cavity, an elastic film is formed at the bottom of the feeding shaft, and a piezoelectric ceramic actuator is arranged between a pre-tightening screw and the elastic film through two semi-circular steel balls and is connected with a driving power supply through a slip ring; the coarse adjustment nut is arranged in the nut mounting hole, the feed shaft sequentially penetrates through the shaft hole and the coarse adjustment nut, the pre-tightening screw is inserted into the blind hole of the feed shaft and is in threaded connection with the internal thread, and the outer wall of one end, located in the thin-wall cavity, of the feed shaft is provided with the cutter base. The micro-feeding device is also driven by piezoelectric ceramics, but the micro-feeding device can only realize micro-feeding in the axial direction and cannot meet the radial feeding requirement of pin hole machining. In addition, the Wangchongliang of the university of national defense science and technology also designs a piston special-shaped pin hole boring radial micro-feeding mechanism based on piezoelectric ceramic driving, and the mechanism adopts a flexible hinge as a supporting and guiding element of a piezoelectric ceramic driver to realize displacement conversion, has lower rigidity and can not ensure the processing precision.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a micro-feeding device of a piezoelectric ceramic matched lever mechanism for processing a piston pin hole, which has the characteristics of high precision, high resolution and quick response, and has the advantages of simple and reasonable structure and easiness in processing.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a little of piezoceramics cooperation lever mechanism for piston pin hole processing advances device which characterized in that: the automatic boring machine comprises a base, a tool handle, a boring tool, a tool feeding piezoelectric ceramic driver and a tool retracting piezoelectric ceramic driver, wherein one end of the tool handle is inserted into the base, the other end of the tool handle extends out of the base and is fixedly connected with the boring tool, a lever shaft penetrates through the base from front to back, the tool handle is connected with the base together and can rotate along the lever shaft, the tool feeding piezoelectric ceramic driver and the tool retracting piezoelectric ceramic driver are adjustably arranged on the upper side and the lower side of the base respectively through pretightening screws, the tool feeding piezoelectric ceramic driver and the tool retracting piezoelectric ceramic driver are vertically arranged with the lever shaft, the inner ends of the tool feeding piezoelectric ceramic driver and the tool retracting piezoelectric ceramic driver are respectively abutted against the upper side and the lower side, close to the tail, of the tool handle, and when the tool is fed or retracted, the deformation displacement of the tool feeding piezoelectric ceramic driver and the tool retracting.
As the improvement, the outer end of base is concave to be equipped with the U type groove that supplies the handle of a knife to plant, and the width in U type groove is greater than the diameter of handle of a knife, and the through hole that supplies the lever axle to wear to put is seted up to one side fore-and-aft direction that the middle part of base is close to the outer end, and the front end of lever axle is equipped with the terminal surface that offsets with the through hole, and the rear end is equipped with the external screw thread section, and the shaft hole that supplies the lever axle to wear to put is seted up at the middle part of handle of a knife, and the lever axle passes the preceding terminal.
And the front end and the rear end of the shaft hole of the knife handle are concavely provided with expanding step holes, the front section of the lever shaft is formed with an expanding section which is abutted against the expanding step hole at the front end of the shaft hole of the knife handle, a spring is arranged in the expanding step hole at the rear end of the shaft hole of the knife handle, and the spring is sleeved outside the lever shaft and supported between the step hole and the inner wall of the base so as to clamp the knife handle.
Furthermore, the upper side and the lower side of the inner end of the cutter handle on the base are respectively provided with a positioning hole for installing a feeding piezoelectric ceramic driver and a retracting piezoelectric ceramic driver, the upper side and the lower side of the inner end of the cutter handle are respectively provided with a positioning concave part for inserting the end parts of the feeding piezoelectric ceramic driver and the retracting piezoelectric ceramic driver, the feeding piezoelectric ceramic driver and the retracting piezoelectric ceramic driver are respectively adjustably penetrated in the positioning hole of the base through a pretightening screw, and when the cutter is fed or retracted, the feeding piezoelectric ceramic driver extends and the retracting piezoelectric ceramic driver shortens, or the piezoelectric ceramic driver shortens and the retracting piezoelectric ceramic driver extends, so that the tail end of the cutter handle generates downward or upward displacement, and the radial feeding or retracting of the boring cutter is realized through the rotation of the lever shaft.
Still further, the pretension screw is a flat-end pretension screw.
Further, displacement sensors are respectively arranged on the upper side and the lower side of the tail portion of the tool handle on the base, mounting holes for mounting the displacement sensors are respectively formed in the upper side and the lower side of the base and the inner ends of the positioning holes, and the displacement sensors are respectively arranged on the upper side and the lower side of the tail end of the tool handle in the mounting holes.
And finally, the tail end of the base is quickly connected with a main shaft of the machine tool by adopting a taper shank.
Compared with the prior art, the invention has the advantages that: two piezoelectric ceramics are adopted as drivers, so that the feeding resolution and precision are improved; a lever shaft is arranged, displacement transformation is realized through a lever mechanism, and errors generated by the flexible hinge are eliminated; the lever shaft is provided with a spring to clamp the tool shank, and the spring pressure is adopted to eliminate the rotation gap, so that the precision is improved. The invention has the characteristics of simple structure, easy processing and manufacturing, high precision, high resolution and quick response.
Drawings
FIG. 1 is a front view of a micro-feeder apparatus provided by the present invention;
fig. 2 is a top view of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in figures 1 and 2, the micro feeding device for the piezoelectric ceramic matching lever mechanism for processing the piston pin hole comprises a base 1, a cutter handle 2, a boring cutter 3, a lever shaft 4, a cutter feeding piezoelectric ceramic driver 5 and a cutter withdrawing piezoelectric ceramic driver 6, wherein the tail end of the base 1 is quickly connected with a machine tool spindle by adopting a taper handle 11, a U-shaped groove 12 for inserting the cutter handle 2 is concavely arranged at the outer end of the base 1, the width of the U-shaped groove 12 is larger than the diameter of the cutter handle 2, one end of the cutter handle 2 is inserted in the base 1, the other end of the cutter handle 2 extends out of the base 1 to be fixedly connected with the boring cutter 3 through a screw, a through hole for inserting the lever shaft 4 is formed in the front-back direction of one side of the middle part of the base 1 close to the outer end, an end face 41 abutting against the through hole is arranged at the front end of the lever shaft 4, an external thread section 42 is arranged at the rear end of, The shaft hole of the tool holder 2 and the rear end surface of the base 1 are screwed and fixed through a matched nut 9, the tool holder 2 and the base 1 are connected together, and the tool holder 2 can rotate along the lever shaft 44; the front end and the rear end of the shaft hole of the tool handle 2 are concavely provided with expanding stepped holes, the front section of the lever shaft 4 is formed with an expanding section which is positioned against the expanding stepped hole at the front end of the shaft hole of the tool handle, a spring 10 is arranged in the expanding stepped hole at the rear end of the shaft hole of the tool handle 2, the spring 10 adopts a cylindrical spiral compression spring, the spring 10 is sleeved outside the lever shaft 4 and is supported between the stepped hole and the inner wall of the base 1 to clamp the tool handle 2, and meanwhile, the rotating gap of the tool handle 4 is eliminated; the feed piezoelectric ceramic driver 5 and the retract piezoelectric ceramic driver 6 are respectively adjustably arranged on the upper side and the lower side of the base 1 through a pretightening screw 8, the feed piezoelectric ceramic driver 5 and the retract piezoelectric ceramic driver 6 are vertically arranged with the lever shaft 4, the upper side and the lower side of the base 1 positioned at the inner end of the knife handle 2 are respectively provided with a positioning hole for installing the feed piezoelectric ceramic driver 5 and the retract piezoelectric ceramic driver 6, the upper side and the lower side of the inner end of the knife handle 2 are respectively formed with a positioning concave part for inserting the end parts of the feed piezoelectric ceramic driver 5 and the retract piezoelectric ceramic driver 6, the feed piezoelectric ceramic driver 5 and the retract piezoelectric ceramic driver 6 are respectively adjustably arranged in the positioning hole of the base through the pretightening screw 8, the pretightening screw 8 adopts a flat end fastening screw, and during feeding or retracting, the deformation displacement of the feed piezoelectric ceramic driver and the retract piezoelectric ceramic driver, the tail end of the cutter handle is displaced downwards or upwards, the boring cutter 3 is fed or withdrawn in the radial direction through the rotation of the lever shaft 4, and the problem of low rigidity of the flexible hinge is solved; displacement sensor 7 is respectively arranged on the upper side and the lower side of the tail portion of the tool holder 2 on the base 1, mounting holes for mounting the displacement sensor 7 are respectively formed in the upper side and the lower side of the base 1 and the inner side of the positioning hole, the displacement sensor 7 is respectively arranged on the upper side and the lower side of the tail end of the tool holder 2 in the mounting holes and used for detecting actual displacement, and the control system compensates the actual displacement by calculating the difference between the actual displacement and the ideal displacement.
During specific operation, feed piezoceramics driver 5 and move back sword piezoceramics driver 6 are through 8 adjustment initial positions of pretension screw, and handle of a knife 2 is through the terminal surface and the axle location of lever axle 4 to realize pressing from both sides tightly through spring 10, handle of a knife 2 can be rotatory around lever axle 4, and eliminate the gyration clearance through the pressure of spring 10, and lever axle 4 passes through terminal surface and the hole location on the base 1 and realizes fixing with base 1 through nut 9. Boring cutter 3 passes through the screw to be fixed with handle of a knife 2, and 2 afterbody of handle of a knife are equipped with displacement sensor 7, and base 1 is through afterbody 7: the taper shank 11 of the 24 is connected with the spindle of the machine tool in a quick way.
During feeding, the feeding piezoelectric ceramic driver 5 serves as a power source to apply voltage, the retracting piezoelectric ceramic driver 6 reduces the voltage, the feeding piezoelectric ceramic driver 5 extends, the retracting piezoelectric ceramic driver 6 shortens, the tail end of the tool shank 2 generates downward displacement, and the boring tool 3 realizes radial feeding through rotation of the lever shaft 4. When the tool is withdrawn, the voltage of the feed piezoelectric ceramic driver 5 is reduced, the return piezoelectric ceramic driver 6 is used as a power source to apply voltage, the feed piezoelectric ceramic driver 5 is shortened, the return piezoelectric ceramic driver 6 is extended, the tail end of the tool shank 2 generates upward displacement, and the boring tool 3 realizes radial tool withdrawal through the rotation of the lever shaft 4; the spring 10 is used for eliminating the rotary clearance of the lever mechanism; the tail end of the cutter handle 2 is provided with a displacement sensor 7 for detecting actual displacement, and the control system compensates the actual displacement by calculating the difference value between the actual displacement and the ideal displacement.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a little of piezoceramics cooperation lever mechanism for piston pin hole processing advances device which characterized in that: the automatic boring machine comprises a base, a tool handle, a boring tool, a tool feeding piezoelectric ceramic driver and a tool retracting piezoelectric ceramic driver, wherein one end of the tool handle is inserted into the base, the other end of the tool handle extends out of the base and is fixedly connected with the boring tool, a lever shaft penetrates through the base from front to back, the tool handle is connected with the base together and can rotate along the lever shaft, the tool feeding piezoelectric ceramic driver and the tool retracting piezoelectric ceramic driver are adjustably arranged on the upper side and the lower side of the base respectively through pretightening screws, the tool feeding piezoelectric ceramic driver and the tool retracting piezoelectric ceramic driver are vertically arranged with the lever shaft, the inner ends of the tool feeding piezoelectric ceramic driver and the tool retracting piezoelectric ceramic driver are respectively abutted against the upper side and the lower side, close to the tail, of the tool handle, and when the tool is fed or retracted, the deformation displacement of the tool feeding piezoelectric ceramic driver and the tool retracting.
2. The micro-feeding apparatus of claim 1, wherein: the outer end of base is concave to be equipped with the U type groove that supplies the handle of a knife to plant, and the width in U type groove is greater than the diameter of handle of a knife, and the middle part of base is close to one side fore-and-aft direction of outer end and offers the through hole that supplies the lever axle to wear to put, and the front end of lever axle is equipped with the terminal surface that offsets with the through hole, and the rear end is equipped with the external screw thread section, and the shaft hole that supplies the lever axle to wear to put is offered at the middle part of handle of a knife, and the lever axle passes the preceding terminal surface of base, the.
3. The micro-feeding apparatus of claim 2, wherein: the front end and the rear end of the shaft hole of the knife handle are concavely provided with expanding step holes, the front section of the lever shaft is formed with an expanding section which is abutted against the expanding step hole at the front end of the shaft hole of the knife handle, a spring is arranged in the expanding step hole at the rear end of the shaft hole of the knife handle, and the spring is sleeved outside the lever shaft and supported between the step hole and the inner wall of the base so as to clamp the knife handle.
4. A micro-feeding apparatus according to claim 3, wherein: the spring adopts a cylindrical spiral compression spring.
5. The micro-feeding device according to any one of claims 1 to 4, characterized in that: the upper side and the lower side of the inner end of the cutter handle on the base are respectively provided with a positioning hole for installing a feeding piezoelectric ceramic driver and a retracting piezoelectric ceramic driver, the upper side and the lower side of the inner end of the cutter handle are respectively provided with a positioning concave part for inserting the end parts of the feeding piezoelectric ceramic driver and the retracting piezoelectric ceramic driver, the feeding piezoelectric ceramic driver and the retracting piezoelectric ceramic driver are respectively adjustably penetrated in the positioning hole of the base through a pretightening screw, when the cutter is fed or retracted, the feeding piezoelectric ceramic driver extends and the retracting piezoelectric ceramic driver shortens, or the piezoelectric ceramic driver shortens and the retracting piezoelectric ceramic driver extends, so that the tail end of the cutter handle generates downward or upward displacement, and the radial feeding or retracting of the boring cutter is realized through the rotation of the lever shaft.
6. The micro-feeding apparatus of claim 5, wherein: the pre-tightening screw is a flat-end set screw.
7. The micro-feeding apparatus of claim 5, wherein: the displacement sensor is arranged on the upper side and the lower side of the tail portion of the tool handle on the base respectively, mounting holes for mounting the displacement sensor are formed in the upper side and the lower side of the base and the inner end of the positioning hole respectively, and the displacement sensor is arranged on the upper side and the lower side of the tail end of the tool handle in the mounting holes respectively.
8. The micro-feeding device according to any one of claims 1 to 4, characterized in that: the tail end of the base is quickly connected with a machine tool spindle through a taper shank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360435.1A CN109571110B (en) | 2018-11-15 | 2018-11-15 | Micro-feeding device of piezoelectric ceramic matched lever mechanism for processing piston pin hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360435.1A CN109571110B (en) | 2018-11-15 | 2018-11-15 | Micro-feeding device of piezoelectric ceramic matched lever mechanism for processing piston pin hole |
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| Publication Number | Publication Date |
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| CN109571110A CN109571110A (en) | 2019-04-05 |
| CN109571110B true CN109571110B (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811360435.1A Active CN109571110B (en) | 2018-11-15 | 2018-11-15 | Micro-feeding device of piezoelectric ceramic matched lever mechanism for processing piston pin hole |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705903B (en) * | 2020-12-18 | 2022-03-01 | 湖南江滨机器（集团）有限责任公司 | Lathe tailstock repairing method |
| CN114042960A (en) * | 2021-12-03 | 2022-02-15 | 湖南江滨机器（集团）有限责任公司 | Piston pin hole machining device and machining method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2352292Y (en) * | 1998-12-04 | 1999-12-08 | 广东工业大学 | Piezoelectric type final motion boring bar |
| CN1083751C (en) * | 1998-12-17 | 2002-05-01 | 中国人民解放军国防科学技术大学 | Digital controlled boring radial feeding method and device thereof |
| CN2668303Y (en) * | 2004-01-18 | 2005-01-05 | 三一重工股份有限公司上海研究院 | Multipurpose boring cutter |
| CN100528432C (en) * | 2006-11-29 | 2009-08-19 | 上海重型机床厂 | Digital control boring spindle for processing deep blind-hole bottom inner camber |
| CN202087842U (en) * | 2011-05-17 | 2011-12-28 | 周众 | Equipment used for machining middle convex noncircular piston |
| KR101281424B1 (en) * | 2011-07-21 | 2013-07-02 | 동양피스톤 주식회사 | Finishing machine for pinhole of piston |
| CN202845836U (en) * | 2012-10-28 | 2013-04-03 | 温州大统活塞水泵有限公司 | Piston noncircular pin hole boring automatic cutting feed device |
| CN202910327U (en) * | 2012-12-10 | 2013-05-01 | 浙江汉纳机械科技有限公司 | Boring tool displacement adjusting mechanism |
| CN103481106B (en) * | 2013-07-05 | 2016-06-22 | 哈尔滨工业大学 | A kind of piezoelectric ceramic type micro-feeding device of ultraprecise fly-cutting machining tool |
| CN203791753U (en) * | 2014-01-28 | 2014-08-27 | 嘉兴市万基机械研发有限公司 | Machine for conducting chamfering inside pin hole of piston |
| CN104084624A (en) * | 2014-06-04 | 2014-10-08 | 池州学院 | Giant magnetostrictive material-driven intelligent boring rod |
| CN104227342B (en) * | 2014-08-09 | 2016-06-29 | 华意压缩机股份有限公司 | A kind of refrigerator compressor piston pin hole combinational processing method |
| CN104439331B (en) * | 2014-12-04 | 2018-05-18 | 天长缸盖有限公司 | A kind of boring cutter micromatic setting |
| CN105729116B (en) * | 2016-03-23 | 2018-06-12 | 西安交通大学 | Complex machining process is ground in a kind of boring |
| CN107237872B (en) * | 2017-06-22 | 2019-08-20 | 山东大学 | Displacement resolution based on lever drive refines micro-nano operating platform |
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