CN101352810B - Antisymmetric straight-line driving component with translational and rotary feed function - Google Patents
Antisymmetric straight-line driving component with translational and rotary feed function Download PDFInfo
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- CN101352810B CN101352810B CN200810116736XA CN200810116736A CN101352810B CN 101352810 B CN101352810 B CN 101352810B CN 200810116736X A CN200810116736X A CN 200810116736XA CN 200810116736 A CN200810116736 A CN 200810116736A CN 101352810 B CN101352810 B CN 101352810B
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Abstract
A translation-rotation feed functional part used for the asymmetric linear drive of an nc machine tool includes a static platform, a movable platform and two fork chains, namely a main fork chain and a secondary fork chain; the static platform is a base; the movable platform is a movement output part and is provided with a tail end performer; the linear lead rail of the main fork chain is arranged on the static platform; a slide platform is arranged on the linear lead rail; a round bearing bracket is fixedly connected on the slide platform; a round bearing is arranged on the round bearing bracket; a linear drive system is arranged between the static platform and the slide platform; a secondary linear lead rail of the secondary fork chain is arranged on the static platform; a secondary slide platform is arranged on a secondary linear lead rail; a gemel bracket is fixedly connected on the secondary slide platform; the two ends of a connection rod are provided with gemel joints; one end is connected with the gemel bracket and the other is connected with the movable platform; a secondary linear drive system is arranged between the static platform and the secondary slide platform for providing a drive force for the secondary slide platform. The feed functional part has the advantages of simple movement chain, high movement precision, good rigidness, convenient control, and the like, thus leading the functional part to be more practical.
Description
[technical field]
The present invention relates to a kind of " translation+rotation " feed function parts that are used for the asymmetric linear drives of Digit Control Machine Tool, belong to the numerical control machine tool technique field.
[background technology]
Lathe collects dress by various functional parts (main axle unit and main tapping, ball screw assembly,, rotary table, digital control servo system etc.) and forms on basic frames such as lathe bed, column, this functional part (also being functional module) is an important composition of Computerized Numerical Control machine tool.The main task of Digit Control Machine Tool main engine plants is to manufacture basic components such as lathe bed, column also required functional part to be assembled into complete Digit Control Machine Tool product with it, developing into of Digit Control Machine Tool overall technology and Digit Control Machine Tool functional part interdepend, collaborative development, so progress of machine industry, the research and development of being not only machine tool plant itself just can reach, and the innovation of functional part also influences the development of Digit Control Machine Tool dearly.Functional part is the upstream of machine industry, and machine industry then is the downstream of functional part.Demand by the innovation or the environmental protection of Machine Tool design can promote the new development of functional part; And the innovation of functional part equally also can bring revolutionary change for machine industry.The level of functional part has determined the level of complete machine; The reliability of functional part has determined the reliability of complete machine; The manufacturing cost of functional part has determined the manufacturing cost of complete machine; Determined the delivery date of complete machine the delivery date of functional part.
The present invention is a kind of two-axis numerical control machine tool functional component, and this functional part can be finished the straight-line feed motion and the motion of revolution beat of cutter platform.From the prior art, the machine tool functional component of finishing such function adopts series design, promptly a motor passes through corresponding mechanism, add leading screw or linear electric motors add the rectilinear motion that line slideway is finished cutter platform as electric rotating machine, another motor (being generally electric rotating machine) is responsible for finishing rotatablely moving of cutter platform.The often mechanical assembly of such design is bigger, and mechanical inertia is bigger, thereby influences the mechanical assembly of complete machine, and dynamic property is not high.The structure of symmetrical expression is often taked in the application of parallel in addition structure on Digit Control Machine Tool, promptly the branched structure that links to each other with moving platform is identical, moving platform is positioned at the geometric center of each side chain, therefore the motion of each direction of moving platform and the motion of each side chain intercouple, for the design of control system has increased difficulty.
[summary of the invention]
The object of the present invention is to provide a kind of " translation+rotation " two-freedom functional part that is used for the asymmetric linear drives of Digit Control Machine Tool, overcome shortcoming of the prior art with asymmetrical parallel-connection structure.
The translation of a kind of asymmetric linear drives of the present invention adds rotates the feed function parts, and it comprises silent flatform, moving platform, two side chains, promptly main side chain and auxilliary side chain, and two side chains are responsible for connecting silent flatform and moving platform.
Described silent flatform is a base, and the installation that is mainly side chain provides installs the basis, which is provided with for space and screwed hole that motor and guide rail are installed.
Described moving platform is the motion output block of entire mechanism, and end effector is installed on the moving platform, as the cutter spindle of cutter, electric main shaft or band pivot angle etc., has on the moving platform and is used for the erection joint that links to each other with each side chain.Wherein, described erection joint is a knuckle joint.
Described main side chain is a PR structure, i.e. a moving sets and a revolute pair, and moving sets realizes that by line slideway revolute pair realizes by circular journal bearing; Main side chain comprises linear drive system, slide unit, circular journal bearing support, line slideway, circular journal bearing; Line slideway is installed on the silent flatform, and slide unit is installed on the line slideway, and the circular journal bearing support is connected on the slide unit, and circular journal bearing is installed on the circular journal bearing support, is used to be connected and installed moving platform; Linear drive system is installed between silent flatform and the slide unit, is mainly slide unit driving force is provided.Wherein, described linear drive system is that linear electric motors drive or electric rotating machine adds leading screw realization linear drives.
Described auxilliary side chain is a PRR structure, i.e. a moving sets and two revolute pairs, and moving sets realizes that by line slideway revolute pair is passed through hinge; Auxilliary side chain comprises auxilliary linear drive system, auxilliary slide unit, hinge bracket, auxilliary line slideway, connecting rod; Auxilliary line slideway is installed on the silent flatform, and auxilliary slide unit is installed on the auxilliary line slideway, and hinge bracket is connected on the auxilliary slide unit; There is knuckle joint at the connecting rod two ends, and an end connects hinge bracket, and the other end connects moving platform; Auxilliary linear drive system is installed between silent flatform and the auxilliary slide unit, is mainly auxilliary slide unit driving force is provided.Wherein, described auxilliary linear drive system is that linear electric motors drive or electric rotating machine adds lead screw transmission realization linear drives.
The auxilliary linear drive system of the linear drive system of described main side chain, line slideway and auxilliary side chain, auxilliary line slideway are installed on the silent flatform; The circular journal bearing support of main side chain is connected by circular journal bearing with moving platform, and moving platform can rotate around the circular journal bearing axis, and rotation passes the geometric center of moving platform; Auxilliary side chain connecting rod links to each other with the erection joint of moving platform; Under the effect of the linear drive system of two side chains, moving platform just can be realized the translation of a direction and rotatablely moving of a direction.
Wherein, described erection joint is a knuckle joint.
Wherein, described linear drive system is that linear electric motors drive or electric rotating machine adds leading screw and realizes linear drives.
Wherein, described auxilliary linear drive system is that linear electric motors drive or electric rotating machine adds leading screw realization linear drives.
Wherein, described moving platform can rotate around the circular journal bearing axis, and rotation passes the geometric center of moving platform.
The translation of a kind of asymmetric linear drives of the present invention adds rotates the feed function parts, and its advantage is:
1, adopts asymmetric side chain PR and PRR structure, the geometric center of moving platform is positioned on the revolute axis of PR side chain, the position coordinates of moving platform is identical with the translation position coordinates of PR side chain like this, and it is irrelevant with the position coordinates of PRR side chain, be a kind of mechanically decoupled design, be very beneficial for the design of control system.
2, adopt design philosophy in parallel, two branched structures are succinct, the transmission link compactness, and mechanical assembly is little, and rigidity helps the suface processing quality that Digit Control Machine Tool improves part greatly more.
3, to have a kinematic chain simple in the present invention, the kinematic accuracy height, and good rigidly, advantage such as control is convenient makes such functional part practical more.
[description of drawings]
Fig. 1 is the stereogram of the embodiment of the invention one
Fig. 2 is the main branched structure figure of the embodiment of the invention one
Fig. 3 is the auxilliary branched structure figure of the embodiment of the invention one
Fig. 4 is the stereogram of the embodiment of the invention two
Fig. 5 is the explosive view of the embodiment of the invention two
Fig. 6 is the stereogram of the embodiment of the invention three
Fig. 7 is the stereogram of the embodiment of the invention four
Fig. 8 is the stereogram of the embodiment of the invention five
Number in the figure is described as follows:
1 silent flatform, 2 moving platforms, 3 main side chains
4 auxilliary side chain 5 electric main shaft 6 knuckle joints
7 linear drive systems, 8 motor stators, 9 electric movers
10 slide units, 11 line slideways, 12 circular journal bearing supports
13 circular journal bearings, 14 auxilliary linear drive system 15 auxiliary motor stators
16 auxiliary motor movers, 17 auxilliary slide unit 18 auxilliary line slideways
19 hinge brackets, 20 connecting rods, 21 knuckle joints
22 electric rotating machine drive systems, 23 electric rotating machines, 24 shaft joints
25 back seats, 26 leading screws, 27 square nuts
28 front stalls, 29 lathe tools, 30 milling cutter I
31Y shape moving platform 32 swinging axles 33 cutter spindles
34 milling cutter II
[specific embodiment]
Embodiment one
As shown in Figure 1, the translation of a kind of asymmetric linear drives of the present invention adds rotates the feed function parts, comprises silent flatform 1, moving platform 2, two side chains, and 4, two side chains of promptly main side chain 3 and auxilliary side chain are responsible for connecting silent flatform 1 and moving platform 2.
As shown in Figure 1, described silent flatform 1 is equivalent to a base, for the installation of main side chain 3 and auxilliary side chain 4 provides the basis is installed, three long boss that are parallel to each other are arranged on the silent flatform 1, be used to install line slideway 11, auxilliary line slideway 18, have between the long boss than large space to be used to install motor stator 8, auxiliary motor stator 15.
As shown in Figure 1, the motion output block that described moving platform 2 is entire mechanism is equipped with electric main shaft 5 on the moving platform 2, and moving platform has knuckle joint 6 on 2 one sides.
As shown in Figure 2, described main side chain 3 is PR structures, i.e. a moving sets and a revolute pair, and moving sets realizes that by line slideway 11 revolute pair realizes by circular journal bearing 13; Main side chain 3 comprises linear drive system 7, slide unit 10, circular journal bearing support 12, line slideway 11, circular journal bearing 13; Line slideway 11 has two, is installed in parallel on the silent flatform 1, and slide unit 10 is installed on the line slideway 11, and circular journal bearing support 12 is h type structures of a upset, and its opening part has cup, is used to install circular journal bearing 13; Circular journal bearing support 12 is connected on the slide unit 10, and circular journal bearing 13 is installed on the circular journal bearing support 12, is used to be connected and installed moving platform 2; Linear drive system 7 comprises motor stator 8, electric mover 9 for linear electric motors drive, and motor stator 8 is installed on the silent flatform 1, and electric mover 9 is connected in slide unit 10 lower surfaces; Between motor stator 8 and the electric mover 9 small air gap is arranged; During work, linear drive system 7 provides driving force for slide unit 10.
As shown in Figure 3, described auxilliary side chain 4 is PRR structures, i.e. a moving sets and two revolute pairs, and moving sets realizes that by auxilliary line slideway 18 revolute pair realizes by hinge; Auxilliary side chain 4 comprises auxilliary linear drive system 14, auxilliary slide unit 17, hinge bracket 19, auxilliary line slideway 18, connecting rod 20; Auxilliary line slideway 18 has two, is installed in parallel on the silent flatform 1, and auxilliary slide unit 17 is installed on the auxilliary line slideway 18, and hinge bracket 19 is connected on the auxilliary slide unit 17; Connecting rod 20 two ends have knuckle joint 21, one ends to connect hinge bracket 19, and the other end connects moving platform 2; Auxilliary linear drive system 14 comprises auxiliary motor stator 15, auxiliary motor mover 16 for linear electric motors drive, and auxiliary motor stator 15 is installed on the silent flatform 1, and auxiliary motor mover 16 is connected in auxilliary slide unit 17 lower surfaces; Between auxiliary motor stator 15 and the auxiliary motor mover 16 small air gap is arranged; During work, auxilliary linear drive system 14 provides driving force for auxilliary slide unit 17.
As Fig. 1, Fig. 2, shown in Figure 3, the auxilliary linear drive system 14 of the linear drive system 7 of described main side chain 3, line slideway 11 and auxilliary side chain 4, auxilliary line slideway 18 are installed on the silent flatform 1; Article two, line slideway 11 is parallel with two auxilliary line slideways 18; The circular journal bearing support 12 of main side chain 3 is connected by circular journal bearing 13 with moving platform 2, and moving platform 2 can rotate around circular journal bearing 13 axis, and rotation passes the geometric center of moving platform 2; The knuckle joint 21 of connecting rod 20 1 ends of auxilliary side chain 4 links to each other with the knuckle joint 6 of moving platform 2; Under linear drive system 7 and auxilliary linear drive system 14 drove simultaneously, moving platform 2 just can be realized the translation of a direction and rotatablely moving of a direction.
Embodiment two
As Fig. 4, shown in Figure 5, embodiment two changes linear drive system 7 and auxilliary linear drive system 14 on the basis of embodiment one, replaces with electric rotating machine drive system 22.
Described electric rotating machine drive system 22 has two covers, and structure is identical, drives main side chain 3 and auxilliary side chain 4 respectively.As shown in Figure 5, electric rotating machine drive system 22 is made up of electric rotating machine 23, shaft joint 24, back seat 25, leading screw 26, square nut 27, front stall 28; Electric rotating machine 23 is connected on the back seat 25 by bolt, and the output shaft of electric rotating machine 23 links to each other with an end of leading screw 26 by shaft joint 24, and leading screw 26 other ends link to each other with front stall 28 by bearing; Back seat 25 is connected on the silent flatform 1 by bolt with front stall 28; Square nut 27 is installed on the leading screw 26 and cooperates with it, and square nut 27 is connected on slide unit 10 or the auxilliary slide unit 17 by bolt.
Embodiment three
Embodiment three is on the basis of embodiment one, a kind of performance of the cutter on the change moving platform 2.
As shown in Figure 6, use the electric main shaft 5 in lathe tool 29 alternative embodiments one here, this moment, this functional part was configurable in the turning center.
Embodiment four
Embodiment four is on the basis of embodiment one, loads a kind of performance of cutter on the electric main shaft 5 on the moving platform 2.
As shown in Figure 7, be carried on the electric main shaft 5 with milling cutter I30 here, this moment, this functional part was configurable in the turnning and milling Compositions of metal-working machines.
Embodiment five
Embodiment five is on the basis of embodiment one, a kind of performance of change moving platform 2 and electric main shaft 5.
As shown in Figure 7, the moving platform 2 in Y shape moving platform 31 alternative embodiments one, the opening part of Y shape moving platform 31 is equipped with swinging axle 32, the cutter spindle 33 that is connected on the swinging axle 32, cutter spindle 33 ends are loaded with milling cutter II34; Described swinging axle 32 drives for torque motor, and under the driving of swinging axle 32, cutter spindle 33 can be swung.
Under this embodiment situation, can easily realize the straight-line feed and the double pendulum angle function of main shaft compactly, this moment, this functional part was configurable in five coordinate machining centers.
Claims (7)
1. the translation of an asymmetric linear drives adds rotation feed function parts, and it comprises silent flatform, moving platform, two side chains, promptly main side chain and auxilliary side chain, and two side chains are responsible for connecting silent flatform and moving platform; It is characterized in that: this silent flatform is a base, for the installation of side chain provides the basis is installed; Which is provided with for space and screwed hole that motor and guide rail are installed; This moving platform is the motion output block of entire mechanism, and end effector is installed on the moving platform, has on the moving platform to be used for the erection joint that links to each other with each side chain;
This main side chain comprises linear drive system, slide unit, circular journal bearing support, line slideway, circular journal bearing; Line slideway is installed on the silent flatform, and slide unit is installed on the line slideway, and the circular journal bearing support is connected on the slide unit, and circular journal bearing is installed on the circular journal bearing support, is used to be connected and installed moving platform; Linear drive system is installed between silent flatform and the slide unit, for slide unit provides driving force;
Should comprise auxilliary linear drive system, auxilliary slide unit, hinge bracket, auxilliary line slideway, connecting rod by auxilliary side chain; Auxilliary line slideway is installed on the silent flatform, and auxilliary slide unit is installed on the auxilliary line slideway, and hinge bracket is connected on the auxilliary slide unit; There is knuckle joint at the connecting rod two ends, and an end connects hinge bracket, and the other end connects moving platform; Auxilliary linear drive system is installed between silent flatform and the auxilliary slide unit, for auxilliary slide unit provides driving force;
The circular journal bearing support of main side chain is connected by circular journal bearing with moving platform, and auxilliary side chain connecting rod links to each other with the erection joint of moving platform; Under the effect of the auxilliary linear drive system of the linear drive system of main side chain and auxilliary side chain, moving platform is realized the translation of a direction and rotatablely moving of a direction.
2. the translation of asymmetric linear drives according to claim 1 adds rotation feed function parts, and it is characterized in that: described erection joint is a knuckle joint.
3. the translation of asymmetric linear drives according to claim 1 adds rotation feed function parts, it is characterized in that: described linear drive system is that linear electric motors drive.
4. the translation of asymmetric linear drives according to claim 1 adds rotation feed function parts, and it is characterized in that: described linear drive system is to add leading screw by electric rotating machine to realize linear drives.
5. the translation of asymmetric linear drives according to claim 1 adds rotation feed function parts, it is characterized in that: described auxilliary linear drive system is that linear electric motors drive.
6. the translation of asymmetric linear drives according to claim 1 adds rotation feed function parts, and it is characterized in that: described auxilliary linear drive system is to add leading screw by electric rotating machine to realize linear drives.
7. the translation of asymmetric linear drives according to claim 1 adds rotation feed function parts, it is characterized in that: described moving platform is around the rotation of circular journal bearing axis, and rotation passes the geometric center of moving platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810116736XA CN101352810B (en) | 2008-07-16 | 2008-07-16 | Antisymmetric straight-line driving component with translational and rotary feed function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810116736XA CN101352810B (en) | 2008-07-16 | 2008-07-16 | Antisymmetric straight-line driving component with translational and rotary feed function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101352810A CN101352810A (en) | 2009-01-28 |
| CN101352810B true CN101352810B (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810116736XA Expired - Fee Related CN101352810B (en) | 2008-07-16 | 2008-07-16 | Antisymmetric straight-line driving component with translational and rotary feed function |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862967B (en) * | 2010-07-14 | 2011-08-31 | 上海交通大学 | Dual-drive dual-screw rod positioner |
| CN105945722B (en) * | 2016-06-24 | 2019-02-05 | 阳江市阳东区科拓自动化机械设备有限公司 | A kind of workbench swinging structure of numerical control knife sharpener |
| DE102018120936B4 (en) * | 2018-08-28 | 2020-09-03 | Gebr. Heller Maschinenfabrik Gmbh | Machine tool |
| CN113021406B (en) * | 2021-03-30 | 2022-08-30 | 山东大学 | Hydraulically-driven two-degree-of-freedom robot joint assembly |
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Granted publication date: 20100908 Termination date: 20120716 |