CN1256988A - Truss structure digital controlled machine-tool - Google Patents
Truss structure digital controlled machine-tool Download PDFInfo
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- CN1256988A CN1256988A CN 98121062 CN98121062A CN1256988A CN 1256988 A CN1256988 A CN 1256988A CN 98121062 CN98121062 CN 98121062 CN 98121062 A CN98121062 A CN 98121062A CN 1256988 A CN1256988 A CN 1256988A
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- bar linkage
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Abstract
The numerical control machine tool with truss structure includes lifting/lowering mechanism, moving platform, plane six-bar mechanism, working table and bed, in which the lifting/lowering mechanism is connected with slide plate with supporting bar from moving platform or plane six-bar mechanism by means of screw rod pair and servo-actuator, and the moving platform equipped with tool head is connected with the top plate of the plane six-bar mechanism by means of two co-axial rotating pairs, so that the plane six-bar mechanism can be driven by lifting mechanism and supporting bar to implement four-dimensional movement in the working space, and the cutting-tool can be driven by servo-actuator to impmement rotating movement. Said invented numerical control machine tool is good in rigidity, light in weight, simple in structure, low in cost, large in working space, good in operability, and can complete multidimensional culvature working.
Description
The present invention relates to a kind of machinery manufacturing industry process equipment, specifically is truss structure digital controlled machine-tool, and it not only is fit to the processing of various abnormal curved surfaces is used, and also can be used as the usefulness of multi-coordinate measuring machine.
Existing machine tool technology, series is complete, various in style.Its structure mainly is made up of lathe bed, column, guide rail and crossbeam etc., mostly is cascaded structure.The shortcoming of this class lathe is mechanism's heaviness, and parts are many, and the transmission chain length is bulky, and complex structure involves great expense, and shows on the gang tool especially.The lathe each several part is stressed, thermal deformation is inhomogeneous, and the effect of tensile, compressive, bending in process, torsion and moment makes lathe produce vibration, and the result causes machining precision to reduce.In addition, parts are heavy, volume is big, limited cutting process medium velocity and acceleration and improved.External magazine " WZL " RWTH Aachen 09.1997 discloses a kind of triaxial parallel machine tool, it mainly adopts planar five-bar mechanism is the parallel-connection structure on basis, has three degree of freedom, but it is undesirable on system stiffness, load capacity, fine motion precision, operating space, the dimension, and only, do not reach degree of being practical for laboratory exhibition model machine.
For solving the deficiency of above machine tooling, the present invention's purpose provides that a kind of system stiffness is good, load capacity strong, fine motion precision height, the operating space is big, dimension is many truss structure digital controlled machine-tool, can realize complex profile and various special-shaped curved processing.
The present invention seeks to realize like this, it comprises elevating mechanism, motion platform, worktable and lathe bed, it is characterized in that: also comprise plane six-bar linkage, and the whole gantry frame formula truss-frame structure in parallel that adopts, wherein:
Elevating mechanism comprises servomotor, leading screw, slide plate and four poles, two pairs of vertical leading screws are installed in respectively on machine framework two columns, every rhizoid thick stick links to each other with servomotor by shaft coupling, and connect the slide plate that can lead along two guide rails that fixed guide moves up and down by each screw on it with the leading screw rotation, each slide plate connects a pole from motion platform or plane six-bar linkage top support plate, connect plane six-bar linkage and adopt single-degree-of-freedom revolute pair or two-freedom Hooke's hinge to be connected, connect motion platform and adopt universal joint to be connected with the pole between slide plate with the pole two ends between slide plate;
Motion platform is connected with the top board of plane six-bar linkage by two coaxial revolute pairs, revolute pair axis and plane six-bar linkage top board place plane parallel, and cutter spindle is fixedly mounted on the motion platform;
Plane six-bar linkage is made up of the support plate and the lathe bed of five its physical dimension symmetries, between support plate and with lathe bed between be connected by revolute pair;
Can be installed on the bed ways below the cutter spindle making vertical reciprocating worktable under the driving of Y-axis servomotor.
The present invention has following advantage:
1. structure of the present invention is based on truss in parallel, its rigidity height, strong, the fine motion precision height of load capacity.
2. the present invention separates the motion of vertical reciprocating feed from motion platform, transfers to worktable and carries out, and has expanded the work space of lathe, makes handiness simultaneously, and clamping is flexible.
3. plane six-bar linkage of the present invention has not only limited the extra dof of motion platform, has strengthened the rigidity of lathe, and makes the A of motion platform, B corner independently of one another, has made things convenient for the pose measurement of motion platform.
4. processing object of the present invention can be the plane, also can be curved surface, thereby strong to the adaptability of workpiece, can realize milling, processes such as brill, mill, polishing.
5. elevating mechanism of the present invention is realized that by the servomotor ball screw assembly, slide plate adopts two guide rail guiding, has strengthened system stiffness greatly.
Fig. 1 is five truss structure digital controlled machine-tool structure outside drawings;
Fig. 2 is five truss structure digital controlled machine-tool structural principle front elevations;
Fig. 3 is five truss structure digital controlled machine-tool structural principle vertical views;
Fig. 4 is five truss structure digital controlled machine-tool orthographs;
Fig. 5 is five truss structure digital controlled machine-tool A-A cut-open views;
Fig. 6 is five horizontal schematic diagrams of truss structure digital controlled machine-tool structure;
Fig. 7 is that plane six-bar linkage of the present invention is inverted schematic diagram;
Fig. 8 places framework front side schematic diagram for plane six-bar linkage fixed edge of the present invention;
Fig. 9 places the middle schematic diagram of framework for plane six-bar linkage fixed edge of the present invention.
Below in conjunction with accompanying drawing the present invention is described in further detail:
Embodiment 1:
Fig. 1,2,3,4 and 5 is five truss structure digital controlled machine-tools, it comprises elevating mechanism, motion platform 7, worktable 4 and lathe bed 5, it is characterized in that: also comprise plane six-bar linkage 8, the whole gantry frame formula truss vertical structure in parallel that adopts, plane six-bar linkage is just being put layout, wherein: elevating mechanism comprises servomotor 11, leading screw 10, slide plate 9 and four poles 6, two pairs of vertical leading screws 10 are installed in respectively on machine framework two columns 2, every rhizoid thick stick 10 links to each other with servomotor 11 by shaft coupling, and connect the slide plate 9 that can lead along two guide rails that fixed guide moves up and down by each screw on it with the leading screw rotation, each slide plate 9 connects a pole 6 from motion platform 7 or plane six-bar linkage 8 top support plates, connect plane six-bar linkage 8 and adopt single-degree-of-freedom revolute pair or two-freedom Hooke's hinge to be connected, connect motion platform 7 and adopt universal joint to be connected with the pole 6 of 9 on slide plate with pole 6 two ends between slide plate; Motion platform 7 is connected with the top board of plane six-bar linkage 8 by two coaxial revolute pairs, revolute pair axis and plane six-bar linkage 8 top board place plane parallel, and cutter spindle 3 is fixedly mounted on the motion platform 7; Plane six-bar linkage 8 is made up of the support plate and the lathe bed 5 of five its physical dimension symmetries, be connected by revolute pair between support plate and with 5 of lathe beds, fixed edge places the framework rear side: can be installed on lathe bed 5 guide rails below the cutter spindle 3 making vertical reciprocating worktable 4 under the driving of Y-axis servomotor.
Because the cutter on the cutter spindle 3 can be changed arbitrarily, with carry out different process as mill, machinings such as brill, mill, polishing.If the cutter spindle on the motion platform 73 is changed to corresponding gauge head, the present invention just can be used as measuring machine and uses.
In addition, the pole 6 of actuation movement platform 7 of the present invention and plane six-bar linkage 8 is that elevating mechanism drives the fixing pole of length, also can be the expansion link that is not subjected to the type of drive restriction.Its mechanism characteristics is truss structure in parallel, is not subjected to the influence of driving element type.
Its principle of work is:
Workpiece to be machined is fixed on the worktable 4, thereby making leading screw 10 rotate drive slide plate 9, the motion of servomotor 11 moves up and down, and then in the motion that makes four degree of freedom of cutter spindle 3 acquisitions on the motion platform 7 under the driving of pole 6.Worktable 4 below the cutter spindle 3 along doing vertical to-and-fro movement under the driving of lathe bed 5 guide rail Y-axis servomotors 11, relatively independent with the motion of other degree of freedom, be combined to form the 5-shaft linkage numerical control lathe with the motion of motion platform 7.Cutter rotates under servomotor 11 drives, thereby realizes the processing to arbitrary surface.
Embodiment 2:
As shown in Figure 8, difference from Example 1 of the present invention is that plane six-bar linkage 8 fixed edges place the framework front side.
Embodiment 3:
As shown in Figure 9, difference from Example 1 of the present invention is that plane six-bar linkage 8 fixed edges can place in the middle of the framework, promptly between the row of two on framework leading screw 10 guide rails.
Embodiment 4:
The present invention is that with the vertical structure difference of embodiment 1 its truss-frame structure in parallel is a horizontal type structure, as shown in Figure 6.
Embodiment 5:
As shown in Figure 7, plane six-bar linkage 8 fixed edges of the present invention and embodiment 1 link to each other with lathe bed 5 (promptly just putting) compare, its difference is plane six-bar linkage 8 fixed edges link to each other with cruciform bracing 1 (promptly being inverted).
Embodiment 6:
Difference from Example 1 is motion platform 7 of the present invention is fixedlyed connected with the top board of plane six-bar linkage 8, and of removing on the motion platform 7 drives pole 6, and then this lathe just becomes four-shaft linkage numerical control machine.
Claims (5)
1. a truss structure digital controlled machine-tool comprises elevating mechanism, motion platform, worktable and lathe bed, it is characterized in that: also comprise plane six-bar linkage (8), and the whole gantry frame formula truss-frame structure in parallel that adopts, wherein:
Elevating mechanism comprises servomotor (11), leading screw (10), slide plate (9) and four poles (6), two pairs of vertical leading screws (10) are installed in respectively on machine framework two columns (2), every rhizoid thick stick (10) links to each other with servomotor (11) by shaft coupling, and connect the slide plate (9) that can lead along two guide rails that fixed guide moves up and down by each screw on it with the leading screw rotation, each slide plate (9) connects a pole (6) from motion platform (7) or plane six-bar linkage (8) top support plate, connect plane six-bar linkage (8) and adopt single-degree-of-freedom revolute pair or two-freedom Hooke's hinge to be connected, connect motion platform (7) and adopt universal joint to be connected with the pole (6) between slide plate (9) with pole (6) two ends between slide plate (9);
Motion platform (7) is connected with the top board of plane six-bar linkage (8) by two coaxial revolute pairs, and cutter spindle (3) is fixedly mounted on the motion platform (7);
Plane six-bar linkage (8) is made up of the support plate and the lathe bed (5) of five its physical dimension symmetries, between support plate and with lathe bed (5) between be connected by revolute pair;
It can done under the driving of Y-axis servomotor on lathe bed (5) guide rail that vertical reciprocating worktable (4) is installed in cutter spindle (3) below.
2. according to the described effect controlled machine of claim 1, it is characterized in that plane six-bar linkage (8) fixed edge places in the middle of framework front side, the framework or the framework rear side.
3. according to the described numerically-controlled machine of claim 1, the pole (6) that it is characterized in that actuation movement platform (7) and plane six-bar linkage (8) is that elevating mechanism drives the fixing pole of length, or is not subjected to the expansion link of type of drive restriction.
4. according to claim 1,2 or 3 described numerically-controlled machines, it is characterized in that truss structure in parallel is vertical or horizontal.
5. according to claim 1,2 or 3 described numerically-controlled machines, it is characterized in that plane six-bar linkage (8) fixed edge links to each other with lathe bed (5), promptly just puts; Or link to each other with cruciform bracing (1), promptly be inverted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98121062A CN1083746C (en) | 1998-12-11 | 1998-12-11 | Truss structure digital controlled machine-tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98121062A CN1083746C (en) | 1998-12-11 | 1998-12-11 | Truss structure digital controlled machine-tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1256988A true CN1256988A (en) | 2000-06-21 |
| CN1083746C CN1083746C (en) | 2002-05-01 |
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ID=5226977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98121062A Expired - Fee Related CN1083746C (en) | 1998-12-11 | 1998-12-11 | Truss structure digital controlled machine-tool |
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| Country | Link |
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| CN (1) | CN1083746C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402245C (en) * | 2006-04-05 | 2008-07-16 | 浙江工业大学 | Tri-translational freedom-degree parallel mechanism only containing revolving pair |
| US8079800B2 (en) | 2007-03-01 | 2011-12-20 | Honda Motor Co., Ltd. | Articulated robot |
| CN103231254A (en) * | 2013-04-22 | 2013-08-07 | 浙江理工大学 | Redundant drive three-freedom-degree parallel mechanism with double motion platforms |
| CN103465256A (en) * | 2013-09-27 | 2013-12-25 | 苏州凯欧机械科技有限公司 | Novel large-stiffness space positioning robot |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464946C (en) * | 2007-01-19 | 2009-03-04 | 清华大学 | Structure of spindle head of parallel type A/B axes |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29607680U1 (en) * | 1996-04-27 | 1996-06-20 | Carl Zeiss Jena Gmbh, 07745 Jena | Arrangement for reducing the risk of crash in universal positioning systems |
| FR2757440B1 (en) * | 1996-12-20 | 1999-03-19 | Conservatoire Nat Arts | HEXAPODE PLATFORM AND SPHERICAL ARTICULATION DEVICES FOR USE IN THE PRODUCTION THEREOF |
-
1998
- 1998-12-11 CN CN98121062A patent/CN1083746C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402245C (en) * | 2006-04-05 | 2008-07-16 | 浙江工业大学 | Tri-translational freedom-degree parallel mechanism only containing revolving pair |
| US8079800B2 (en) | 2007-03-01 | 2011-12-20 | Honda Motor Co., Ltd. | Articulated robot |
| CN103231254A (en) * | 2013-04-22 | 2013-08-07 | 浙江理工大学 | Redundant drive three-freedom-degree parallel mechanism with double motion platforms |
| CN103231254B (en) * | 2013-04-22 | 2015-05-06 | 浙江理工大学 | Redundant drive three-freedom-degree parallel mechanism with double motion platforms |
| CN103465256A (en) * | 2013-09-27 | 2013-12-25 | 苏州凯欧机械科技有限公司 | Novel large-stiffness space positioning robot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1083746C (en) | 2002-05-01 |
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