CN101264576A - Parallel type three-axis main-shaft head structure - Google Patents
Parallel type three-axis main-shaft head structure Download PDFInfo
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- CN101264576A CN101264576A CNA2008101049382A CN200810104938A CN101264576A CN 101264576 A CN101264576 A CN 101264576A CN A2008101049382 A CNA2008101049382 A CN A2008101049382A CN 200810104938 A CN200810104938 A CN 200810104938A CN 101264576 A CN101264576 A CN 101264576A
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Abstract
The invention relates to a head structure of a parallel triple-axis main spindle, belonging to the technical field of mechanical manufacturing, which comprises a main spindle, a movable platform, a stationary platform, and three identical structural branch mechanisms which are arranged in a triangle for connecting the movable platform and the stationary platform, the main spindle is fixed on the movable platform; each branch mechanism comprises a movement pair, a planar parallelogram mechanism, and a spherical hinge; the planar parallelogram mechanism comprises two parallel long rods with same length and two short rods with one end connected with the long rod via a revolute pair. By adopting the planar parallelogram mechanism, the head structure of the parallel three-axis main spindle has the advantages of improving the structural rigidity, realizing the Z axis movement of the platform and rotation around X axis and Y axis by overriding three movement pairs, changing the main spindle working position, and having the possibility to comprehensively machine the big scale complicated structural parts.
Description
Technical field
The invention belongs to mechanical manufacturing field, relate to a kind of parallel triaxial main axle journal structure that cooperates other device parts such as aviation large and complex structure spare to be carried out Compound Machining.
Background technology
At present, a large amount of multi-functional milling machines all is equipped with one can realize rotating two shaft mainshaft heads continuously, these main tappings adopt the series-mode frame of double pendulum angle or fork head more, and a kind of fork wardrobe main shaft of having described a kind of A/C shaft mainshaft head and patent US 3483796 propositions as patent ZL03278067.2 is first-class.These main tappings often the transmission system complexity, structure is huge, moving-mass is big, and is difficult to install, manufacturing cost height, maintenance cost are also higher.
Over past ten years, a kind of new concept lathe-parallel machine has appearred in the world.On Chicago IMTS in 1994 is look at meeting (IMTS ' 94), the U.S. long-pending left alone without help this and this (Giddings ﹠amp of Lightware; Lewis) company and put on display for the first time VARIAX and HOH600 parallel machine in the world because of pavilion ear plug (Ingersoll) company.The mechanism of this parallel machine as shown in Figure 2, it comprises fixed platform 9, moving platform 11, is fixed on main tapping 10 and 6 identical side chains on the moving platform 11, wherein each side chain includes spherical hinge 12,14 and moving sets 13, spherical hinge 12 is connected with moving platform 11, and spherical hinge 14 is connected with fixed platform 9.This mechanism has 6DOF, by driving 6 positions that moving sets is realized moving platform 11 on 6 side chains.
Above-mentioned machine adopted parallel-connection structure can be realized multiple functions such as the interlocked numerical controlled processing of multi-coordinate, assembling and measurement, has degree of modularity height, heavy moving parts is light, precision is high, and response is fast, advantages such as low cost of manufacture.Compare with traditional machine tool, this parallel machine has been because of having adopted the form of tool motion, thereby improved performances such as its speed, acceleration, precision and rigidity, but makes the cost height of the parallel machine with 6DOF mechanism, and in the application of reality, often 3DOF mechanism just can meet the demands.
Summary of the invention
The objective of the invention is to overcome the expensive of the structural disadvantages of existing tandem main tapping and 6DOF mechanism parallel machine, a kind of parallel triaxial main axle journal structure is provided, thereby the free degree of this structure decrease mechanism reduces manufacturing cost, can satisfy the processing needs of most of complex parts, in addition, the plane parallel quadrangular mechanism that adds in structure significantly improves mechanism's rigidity.
A kind of parallel triaxial main axle journal structure that the present invention proposes, this structure comprises main shaft, moving platform, a fixed platform and connects described moving platform and the identical branch that is triangularly arranged of three structures of fixed platform that this main shaft is fixed on the moving platform.
Described each branch comprises moving sets, plane parallel quadrangular mechanism and spherical hinge; This moving sets comprises column and input slide block, and this column is fixedlyed connected with this fixed platform, and this input slide block moves along this guide pillar face, and this spherical hinge one end is connected with the plane parallel quadrangular mechanism, and the other end is connected with moving platform.
Described plane parallel quadrangular mechanism comprises two equal in length and parallel long pole and the short member that is connected by revolute pair with an end of these two long poles, and the other end of these two long poles is connected by revolute pair with the input slide block of this moving sets.
Described spigot surface is straight line or circular arc spigot surface.
Characteristics of the present invention and technique effect
The plane parallel quadrangular mechanism that adopts in the parallel triaxial main axle journal structure of the present invention, improved the rigidity of structure, and compare with traditional tandem main tapping, parallel-connection structure has extraordinary harmonic motion inertia and high dynamic performance, can satisfy the requirement of high rigidity, high-speed requirement can be satisfied again, thereby the Compound Machining of large and complex structure parts might be realized.
Description of drawings
Fig. 1 is the structural representation of the present invention three-axis main-shaft head structure embodiment in parallel;
Fig. 2 is six axial parallel machine tool structure schematic diagrames of prior art.
The specific embodiment
Parallel triaxial main axle journal structure of the present invention reaches embodiment in conjunction with the accompanying drawings and is described in detail as follows:
Embodiment
The structure of the three-axis main-shaft head in parallel of present embodiment, as shown in Figure 1, this structure comprises main shaft 5, moving platform 4, fixed platform 1 and connects described moving platform 4 and the identical branch that is triangularly arranged of three structures of fixed platform 1 that this main shaft 5 is fixed on the moving platform 4.
This each branch comprises moving sets 61, plane parallel quadrangular mechanism 62 and spherical hinge 63; This moving sets 61 comprises column 2 and input slide block 3, this column 2 is equilateral triangle and fixedlys connected with fixed platform 1, at these column 2 guiding in-plane movings, these spherical hinge 63 1 ends are connected with plane parallel quadrangular mechanism 62 this column 2 at this input slide block 3, and the other end is connected with moving platform 4; This plane parallel quadrangular mechanism 62 comprises two equal in length and parallel long pole 621, and the short member 622 that is connected by revolute pair with an end of these two long poles 621, the input slide block 3 of the other end of these two long poles 621 and this moving sets 61 is connected by revolute pair.
This spigot surface is straight line or circular arc spigot surface.
The present invention carries out work by following mode:
Motion by three input slide blocks 3 realizes that the z of moving platform 4 is axial and moves and around the x axle
The rotation of y axle changes the operating position of main shaft, thereby might realize the Compound Machining of large and complex structure parts.
Claims (4)
1, a kind of parallel triaxial main axle journal structure, it is characterized in that, this structure comprises main shaft, moving platform, a fixed platform and connects described moving platform and the identical branch that is triangularly arranged of three structures of fixed platform that this main shaft is fixed on the moving platform.
2, structure as claimed in claim 1 is characterized in that, this each branch comprises moving sets, plane parallel quadrangular mechanism and spherical hinge; This moving sets comprises column and input slide block, and this column is fixedlyed connected with this fixed platform, and this input slide block moves along this guide pillar face, and this spherical hinge one end is connected with this plane parallel quadrangular mechanism, and the other end is connected with this moving platform.
3, structure as claimed in claim 2, it is characterized in that, this plane parallel quadrangular mechanism comprises two equal in length and parallel long pole and the short member that is connected by revolute pair with an end of these two long poles, and the other end of these two long poles is connected by revolute pair with the input slide block of this moving sets.
4, structure as claimed in claim 2 is characterized in that, this spigot surface is straight line or circular arc spigot surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101049382A CN101264576B (en) | 2008-04-25 | 2008-04-25 | Parallel type three-axis main-shaft head structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101049382A CN101264576B (en) | 2008-04-25 | 2008-04-25 | Parallel type three-axis main-shaft head structure |
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| Publication Number | Publication Date |
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| CN101264576A true CN101264576A (en) | 2008-09-17 |
| CN101264576B CN101264576B (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101049382A Expired - Fee Related CN101264576B (en) | 2008-04-25 | 2008-04-25 | Parallel type three-axis main-shaft head structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733416B (en) * | 2010-01-29 | 2012-07-04 | 东北大学 | Lathing and grinding combined machining machine tool |
| CN104400446A (en) * | 2014-09-29 | 2015-03-11 | 清华大学 | Parallel main shaft head mechanism based on four-bar mechanisms |
| CN104772628A (en) * | 2015-03-04 | 2015-07-15 | 清华大学 | Three-freedom-degree parallel-connection spindle head mechanism |
| CN106623993A (en) * | 2016-11-30 | 2017-05-10 | 长春理工大学 | Three-freedom-degree parallel spindle head mechanism suitable for horizontal machining |
| CN106994642A (en) * | 2016-01-22 | 2017-08-01 | 香港理工大学 | Series-parallel connection burnishing machine |
| WO2020062431A1 (en) * | 2018-09-26 | 2020-04-02 | 燕山大学 | Symmetrical tri-axial parallel spindle head capable of implementing multi-directional fixed point rotation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127401C (en) * | 2001-02-27 | 2003-11-12 | 燕山大学 | Three free degree moving parallel connected robot mechanism |
| CN2476392Y (en) * | 2001-04-30 | 2002-02-13 | 天津大学 | Vertical three-translation freedom shun machine |
| US6808344B2 (en) * | 2002-12-27 | 2004-10-26 | Jeng-Shyong Chen | Multi-axis cartesian guided parallel kinematic machine |
| CN1261279C (en) * | 2004-03-01 | 2006-06-28 | 西安理工大学 | Three-axle parallel mainshaft head structure for implemonting multidirection verticel-horizontal processing |
| CN1986148B (en) * | 2006-12-22 | 2010-05-19 | 清华大学 | Parallel triaxial head structure |
-
2008
- 2008-04-25 CN CN2008101049382A patent/CN101264576B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733416B (en) * | 2010-01-29 | 2012-07-04 | 东北大学 | Lathing and grinding combined machining machine tool |
| CN104400446A (en) * | 2014-09-29 | 2015-03-11 | 清华大学 | Parallel main shaft head mechanism based on four-bar mechanisms |
| CN104400446B (en) * | 2014-09-29 | 2016-09-28 | 清华大学 | A kind of parallel main shaft head mechanism based on four-bar mechanism |
| CN104772628A (en) * | 2015-03-04 | 2015-07-15 | 清华大学 | Three-freedom-degree parallel-connection spindle head mechanism |
| CN106994642A (en) * | 2016-01-22 | 2017-08-01 | 香港理工大学 | Series-parallel connection burnishing machine |
| CN106623993A (en) * | 2016-11-30 | 2017-05-10 | 长春理工大学 | Three-freedom-degree parallel spindle head mechanism suitable for horizontal machining |
| WO2020062431A1 (en) * | 2018-09-26 | 2020-04-02 | 燕山大学 | Symmetrical tri-axial parallel spindle head capable of implementing multi-directional fixed point rotation |
| US11813709B2 (en) | 2018-09-26 | 2023-11-14 | Yanshan University | Symmetrical three-axis parallel spindle head capable of multi-directional fixed-point rotation |
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| Publication number | Publication date |
|---|---|
| CN101264576B (en) | 2010-10-06 |
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