CN209207497U - A kind of parallel institution of three-dimensional mobile one-dimensional rotation - Google Patents
A kind of parallel institution of three-dimensional mobile one-dimensional rotation Download PDFInfo
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- CN209207497U CN209207497U CN201821740485.8U CN201821740485U CN209207497U CN 209207497 U CN209207497 U CN 209207497U CN 201821740485 U CN201821740485 U CN 201821740485U CN 209207497 U CN209207497 U CN 209207497U
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- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model discloses a kind of parallel institution of three-dimensional mobile one-dimensional rotation, including fixed platform N, moving platform M, three branches, three branches are made of complicated branch I, complicated branch II, simple branch III；The fixed platform N, moving platform M constitute the output campaign of moving platform M by three branch chain links, the compound motion of three branches.The utility model constructs parallel institution using three branch chain link moving platforms and fixed platform, and the structure is simple, is able to achieve spatial three-dimensional translational and one-dimensional rotation, it can be used for the processing of curved surface, the operative scenarios such as welding are a kind of novel parallel institutions, have the advantages that structure is simple, manufacture is easy.
Description
Technical field
The utility model relates to a kind of parallel institutions of three-dimensional mobile one-dimensional rotation, belong to parallel robot technical field.
Background technique
Parallel institution has many advantages, such as that rigidity is big, adaptable and precision is high, so parallel institution causes domestic and international
The research of person and the different field for being applied to every profession and trade are a kind of scientific research projects of current great prospect.But four-degree-of-freedom
The research achievement of parallel institution is still few, at present class of establishment the disadvantages of there is also structure is complicated, in order to increase the type
Mechanism simultaneously achievees the purpose that preferred means, needs to innovate, the four-dimensional parallel machine of comprehensive more out three-dimensional movements and one-dimensional rotation
Structure to reach the specific function in special scenes, and is applied to other industrial circles.
Summary of the invention
The utility model provides a kind of parallel institution of three-dimensional mobile one-dimensional rotation, passes through two complicated branches and one
Simple branch chain link is dynamic, fixed platform is constituted, and can be realized space three-dimensional movement and one-dimensional rotation, can be used for spatial complex curved surface
Processing.
The technical solution of the utility model is: a kind of parallel institution of three-dimensional mobile one-dimensional rotation, including fixed platform N, dynamic
Platform M, three branches, three branches are made of complicated branch I, complicated branch II, simple branch III；
The fixed platform N, moving platform M constitute moving platform M's by three branch chain links, the compound motion of three branches
Output movement；
The complexity branch I and other two branched structures are different, and complicated branch I generates three-dimensional move to moving platform M
The effect of dynamic and bidimensional rotation；
The complexity branch II and other two branched structures are different, and complicated branch II generates moving platform M three-dimensional
Mobile and one-dimensional rotation effect；
The simple branch III and other two branched structures are different, and simple branch III is no constrained branched chain；
The kinematic pair of described three branch one end is connect with fixed platform N respectively, the kinematic pair difference of three branch other ends
It is connect with moving platform M, three branches mutually disjoint.
The sub- parallel institution that the complexity branch I has two-dimension translational and two-dimensional rotary by one is gone here and there by sub- moving platform P
Join a cylindrical pair C110 to form；Cylindrical pair C110 is fixed on moving platform M and sub- moving platform P.
The sub- parallel institution is made of simple branch a, simple branch b；It simple branch a, the one end simple branch b and allocates
Platform N connection, simple branch a, the simple branch b other end are connect with sub- moving platform P；The one end simple branch a being connect with fixed platform N
The axis of kinematic pair, II one end of complicated branch being connect with fixed platform N the axis of kinematic pair be parallel to each other.
The simple branch a is by revolute pair R11, prismatic pair P12, revolute pair R12, revolute pair R14, first connecting rod 1,
Two connecting rods 2, third connecting rod 3, the 4th connecting rod 4 composition；Wherein one end of first connecting rod 1 by revolute pair R11 and is determined
Platform N connection, 1 other end of first connecting rod are connect by prismatic pair P12 with one end of the second connecting rod 2, and the second connecting rod 2 is another
One end is connect by revolute pair R13 with one end of third connecting rod 3, and the other end of third connecting rod 3 passes through revolute pair R14 and the
The connection of four connecting rods, 4 one end, the end of the 4th connecting rod is connect with sub- moving platform P；Wherein revolute pair R11 and revolute pair R13 axis
Line is parallel, and revolute pair R11 is parallel with the axis of cylindrical pair C110, and revolute pair R11 is vertical with prismatic pair P12 axis, revolute pair R13
It is vertical with revolute pair R14 axis；
The simple branch b is by revolute pair R15, prismatic pair P16, revolute pair R17, revolute pair R18, revolute pair R19, the 5th
Connecting rod 5, the 6th connecting rod 6, the 7th connecting rod 7, the 8th connecting rod 8, the 9th connecting rod 9 composition；Wherein the 5th connecting rod 5
One end is connect by revolute pair R15 with fixed platform N, and 5 other end of the 5th connecting rod passes through prismatic pair P16 and the 6th connecting rod 6
One end connection, 6 other end of the 6th connecting rod are connect by revolute pair R17 with one end of the 7th connecting rod 7, the 7th connecting rod 7
The other end is connect by revolute pair R18 with 8 one end of the 8th connecting rod, and the other end of the 8th connecting rod 8 passes through revolute pair R19 and the
The connection of nine connecting rods, 9 one end, the end of the 9th connecting rod 9 is connect with sub- moving platform P；Wherein revolute pair R15 and revolute pair R17 axis
Line is parallel, and revolute pair R18 is parallel with revolute pair R19 axis, and revolute pair R15 is vertical with prismatic pair P16 axis, revolute pair R17 with
Revolute pair R18 axis is vertical；
" plane composed by the axis of revolute pair R13 and the axis of the revolute pair R14 " and " axis of revolute pair R17
Plane composed by axis with revolute pair R18 " is overlapped；Prismatic pair P12 and prismatic pair P16 can be respectively parallel to rotate by axis
The revolute pair of secondary R11 and revolute pair R15 substitution.
The complex mechanism that the complexity branch II has two-dimension translational by one is connected one by the 14th connecting rod 14
The cylindrical pair C26 being fixed on moving platform M is formed.
The complex mechanism for having two-dimension translational includes two identical simple branches, revolute pair R23, and two complete
Exactly the same simple branch one end is connect with fixed platform N, two identical simple branch other ends by revolute pair R23 with
One end of 14th connecting rod 14 connects.
Two identical simple branch specific structures are as follows: one end of the tenth connecting rod 10 passes through revolute pair R21
It being connect with fixed platform N, 10 other end of the tenth connecting rod is connect by prismatic pair P22 with one end of the 11st connecting rod 11, and the tenth
One connecting rod, 11 end is connect with revolute pair R23；One end of 12nd connecting rod 12 is connect by revolute pair R24 with fixed platform N,
12nd connecting rod, 12 other end is connect by prismatic pair P25 with one end of the 13rd connecting rod 13,13 end of the 13rd connecting rod
End is connect with revolute pair R23；
Revolute pair R21, revolute pair R23, revolute pair R24 and the cylindrical pair C26 of the complex mechanism for having two-dimension translational
Axis be parallel to each other, prismatic pair P22 is vertical with the axis of revolute pair R21, and prismatic pair P25 is vertical with the axis of revolute pair R24；
The complex mechanism for having two-dimension translational is triangle, and revolute pair R21, revolute pair R23 and revolute pair R24 divide
It Wei Yu not be on three vertex of triangle.
The simple branch III is no constrained branched chain；Using SPS structure, specifically: one end of the 15th connecting rod 15 is logical
It crosses ball secondary S31 to connect with fixed platform N, 15 other end of the 15th connecting rod passes through the one of prismatic pair P32 and the 16th connecting rod 16
End connection, the end of the 16th connecting rod 16 is connect with the ball secondary S33 being connected on moving platform M；Or use RSS structure.
The beneficial effects of the utility model are: the utility model is constructed using three branch chain link moving platforms and fixed platform
Parallel institution, the structure is simple, is able to achieve spatial three-dimensional translational and one-dimensional rotation, can be used for the processing of curved surface, the work such as welding
Scene is a kind of novel parallel institution, has the advantages that structure is simple, manufacture is easy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Each label in figure are as follows: N- fixed platform, M- moving platform, P- moving platform, 1- first connecting rod, the second connecting rod of 2-,
3- third connecting rod, the 4th connecting rod of 4-, the 5th connecting rod of 5-, the 6th connecting rod of 6-, the 7th connecting rod of 7-, the connection of 8- the 8th
Bar, the 9th connecting rod of 9-, the tenth connecting rod of 10-, the 11st connecting rod of 11-, the 12nd connecting rod of 12-, the connection of 13- the 13rd
Bar, the 14th connecting rod of 14-, the 15th connecting rod of 15-, the 16th connecting rod of 16-, Rij- revolute pair, Pij- prismatic pair, Sij-
Ball is secondary, ij indicates subscript.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in further detail, but the content of the utility model is not
It is limited to the range.
Embodiment 1: as shown in Figure 1, a kind of parallel institution of three-dimensional mobile one-dimensional rotation, including fixed platform N, moving platform M,
Three branches, three branches are made of complicated branch I, complicated branch II, simple branch III；The fixed platform N, moving platform M are logical
Three branch chain links are crossed, the compound motion of three branches constitutes the output campaign of moving platform M；It is described complexity branch I and other
Two branched structures are different, and complicated branch I generates the effect of three-dimensional movement and bidimensional rotation to moving platform M；The complexity
Branch II and other two branched structures are different, and complicated branch II generates three-dimensional movement and one-dimensional rotation to moving platform M
Effect；The simple branch III and other two branched structures are different, and simple branch III is no constrained branched chain；Described three
The kinematic pair of branch one end is connect with fixed platform N respectively, and the kinematic pair of three branch other ends is connect with moving platform M respectively, and three
Branch mutually disjoint (position of three branches under the conditions of branch is disjoint can by translating any exchange, fixed platform,
Moving platform can use arbitrary structures in the disjoint situation of branch).
Has the sub- parallel machine of two-dimension translational and two-dimensional rotary it is possible to further which the complicated branch I is arranged by one
Structure is formed by one cylindrical pair C110 of sub- moving platform P series connection；Cylindrical pair C110 is fixed on moving platform M and sub- moving platform P.
It is formed it is possible to further which the sub- parallel institution is arranged by simple branch a, simple branch b；Simple branch a, letter
The one end single branch b is connect with fixed platform N, and simple branch a, the simple branch b other end are connect with sub- moving platform P；Connect with fixed platform N
The axis of the kinematic pair of the one end simple branch a connect, II one end of complicated branch being connect with fixed platform N kinematic pair axis phase
Mutually parallel (i.e. R11, R21, R24 are parallel).
It is possible to further which the simple branch a is arranged by revolute pair R11, prismatic pair P12, revolute pair R12, revolute pair
R14, first connecting rod 1, the second connecting rod 2, third connecting rod 3, the 4th connecting rod 4 composition；Wherein one end of first connecting rod 1
It is connect by revolute pair R11 with fixed platform N, 1 other end of first connecting rod passes through one end of prismatic pair P12 and the second connecting rod 2
Connection, 2 other end of the second connecting rod are connect by revolute pair R13 with one end of third connecting rod 3, third connecting rod 3 it is another
End is connect by revolute pair R14 with 4 one end of the 4th connecting rod, and the end of the 4th connecting rod is connect with sub- moving platform P；Wherein rotate
Secondary R11 is parallel with revolute pair R13 axis, and revolute pair R11 is parallel with the axis of cylindrical pair C110, revolute pair R11 and prismatic pair P12
Axis is vertical, and revolute pair R13 is vertical with revolute pair R14 axis；
The simple branch b is by revolute pair R15, prismatic pair P16, revolute pair R17, revolute pair R18, revolute pair R19, the 5th
Connecting rod 5, the 6th connecting rod 6, the 7th connecting rod 7, the 8th connecting rod 8, the 9th connecting rod 9 composition；Wherein the 5th connecting rod 5
One end is connect by revolute pair R15 with fixed platform N, and 5 other end of the 5th connecting rod passes through prismatic pair P16 and the 6th connecting rod 6
One end connection, 6 other end of the 6th connecting rod are connect by revolute pair R17 with one end of the 7th connecting rod 7, the 7th connecting rod 7
The other end is connect by revolute pair R18 with 8 one end of the 8th connecting rod, and the other end of the 8th connecting rod 8 passes through revolute pair R19 and the
The connection of nine connecting rods, 9 one end, the end of the 9th connecting rod 9 is connect with sub- moving platform P；Wherein revolute pair R15 and revolute pair R17 axis
Line is parallel, and revolute pair R18 is parallel with revolute pair R19 axis, and revolute pair R15 is vertical with prismatic pair P16 axis, revolute pair R17 with
Revolute pair R18 axis is vertical；" plane composed by the axis of revolute pair R13 and the axis of revolute pair R14 " and " revolute pair
Plane composed by the axis of R17 and the axis of revolute pair R18 " is overlapped.
Has the complex mechanism of two-dimension translational by the 14th it is possible to further which the complicated branch II is arranged by one
One cylindrical pair C26 being fixed on moving platform M of the series connection of connecting rod 14 is formed.
It include two identical simple branch it is possible to further which the complex mechanism for having two-dimension translational is arranged
Chain, revolute pair R23, two identical simple branch one end are connect with fixed platform N, and two identical simple branches are another
One end is connect by revolute pair R23 with one end of the 14th connecting rod 14.
It is possible to further which described two identical simple branch specific structures are arranged are as follows: the tenth connecting rod 10
One end is connect by revolute pair R21 with fixed platform N, and 10 other end of the tenth connecting rod passes through prismatic pair P22 and the 11st connecting rod
11 one end connection, 11 end of the 11st connecting rod is connect with revolute pair R23；One end of 12nd connecting rod 12 passes through revolute pair
R24 is connect with fixed platform N, and 12 other end of the 12nd connecting rod is connect by prismatic pair P25 with one end of the 13rd connecting rod 13,
13rd connecting rod, 13 end is connect with revolute pair R23；The revolute pair R21 of the complex mechanism for having two-dimension translational, rotation
The axis of secondary R23, revolute pair R24 and cylindrical pair C26 are parallel to each other, and prismatic pair P22 is vertical with the axis of revolute pair R21, mobile
Secondary P25 is vertical with the axis of revolute pair R24；The complex mechanism for having two-dimension translational is triangle, revolute pair R21, is turned
Dynamic secondary R23 and revolute pair R24 is located on three vertex of triangle.
It is possible to further which the simple branch III is arranged as no constrained branched chain；Using SPS structure, specifically: the 15th
One end of connecting rod 15 is connect by ball secondary S31 with fixed platform N, and 15 other end of the 15th connecting rod passes through prismatic pair P32 and the
One end of 16 connecting rods 16 connects, and the end of the 16th connecting rod 16 is connect with the ball secondary S33 being connected on moving platform M.
Embodiment 2: it is substantially the same manner as Example 1, the difference is that: the simple branch III uses RSS structure, i.e.,
S31 changes R31 into, and P32 changes S32 into, and other connection relationships are constant.Prismatic pair P12 and prismatic pair P16 is respectively parallel to turn by axis
The revolute pair of dynamic secondary R11 and revolute pair R15 substitute (i.e. P12 becomes R12, and P16 becomes R16, and it is parallel with R11 axis to meet R12,
R16 is parallel with R15 axis；P indicates that prismatic pair, R indicate that revolute pair, S indicate ball pair).
The working principle of the utility model is:
In the mechanism, a rotation of complicated I independent role time limit of branch braking platform M, moving platform is flat with three at this time
Move two rotation (3T2R) movements；When complicated II independent role of branch is on moving platform M, two rotations are generated about to moving platform
Beam makes moving platform have three translations, one rotation (3T1R) movement.When comprehensive complicated branch I and complicated branch II are to moving platform M's
When comprehensive function effect, since two branches all generate three-dimensional movement, therefore three-dimensional movement finally will be also generated, and complexity branch I
For the two-dimensional rotary of generation in the plane that the axis of R17 and R18 is constituted, the one-dimensional rotation that complicated branch II generates is parallel to C26
Axis direction, and because the axis direction of C26 is parallel to the plane that the axis of R17 and R18 is constituted, the comprehensive result of the two is
Produce the one-dimensional rotation for being parallel to the axis direction of C26；Therefore two complicated branches make moving platform generate three translations, one rotation
(3T1R) movement.Simple branch III is no constrained branched chain, will not be had an impact to constraint result.
It is secondary using P12, P16 as driving in complicated branch I；It is secondary using P22 and P25 as driving in complicated branch II；
Simple branch III is secondary using P32 as driving.
The specific embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the utility model is not
Be limited to above embodiment, within the knowledge of a person skilled in the art, can also do not depart from it is practical
Various changes can be made under the premise of novel objective.
Claims (8)
1. a kind of parallel institution of three-dimensional mobile one-dimensional rotation, it is characterised in that: including fixed platform (N), moving platform (M), three
Branch, three branches are made of complicated branch I, complicated branch II, simple branch III；
By three branch chain links, the compound motion of three branches constitutes moving platform (M) for the fixed platform (N), moving platform (M)
Output campaign；
The complexity branch I and other two branched structures are different, and complicated branch I generates moving platform (M) three-dimensional mobile
With the effect of bidimensional rotation；
The complexity branch II and other two branched structures are different, and complicated branch II generates three-dimensional move to moving platform (M)
Dynamic and one-dimensional rotation effect；
The simple branch III and other two branched structures are different, and simple branch III is no constrained branched chain；
The kinematic pair of described three branch one end is connect with fixed platform (N) respectively, the kinematic pair of three branch other ends respectively with
Moving platform (M) connection, three branches mutually disjoint.
2. the parallel institution of three-dimensional mobile one-dimensional rotation according to claim 1, it is characterised in that: the complexity branch I
Have two-dimension translational and the sub- parallel institution of two-dimensional rotary by one to connect a cylindrical pair C110 by sub- moving platform (P)
At；Cylindrical pair C110 is fixed on moving platform (M) and sub- moving platform (P).
3. the parallel institution of three-dimensional mobile one-dimensional rotation according to claim 2, it is characterised in that: the sub- parallel institution
It is made of simple branch a, simple branch b；Simple branch a, the one end simple branch b are connect with fixed platform (N), simple branch a, letter
Single branch b other end is connect with sub- moving platform (P)；The axis of the kinematic pair of the one end simple branch a being connect with fixed platform (N),
The axis of the kinematic pair of II one end of complicated branch connecting with fixed platform (N) is parallel to each other.
4. the parallel institution of three-dimensional mobile one-dimensional rotation according to claim 3, it is characterised in that:
The simple branch a is by revolute pair R11, prismatic pair P12, revolute pair R12, revolute pair R14, first connecting rod (1), second
Connecting rod (2), third connecting rod (3), the 4th connecting rod (4) composition；Wherein one end of first connecting rod (1) passes through revolute pair
R11 is connect with fixed platform (N), and first connecting rod (1) other end is connect by prismatic pair P12 with one end of the second connecting rod (2),
Second connecting rod (2) other end is connect by revolute pair R13 with one end of third connecting rod (3), third connecting rod (3) it is another
End is connect by revolute pair R14 with the 4th connecting rod (4) one end, and the end of the 4th connecting rod is connect with sub- moving platform (P)；Wherein
Revolute pair R11 is parallel with revolute pair R13 axis, and revolute pair R11 is parallel with the axis of cylindrical pair C110, revolute pair R11 and movement
Secondary P12 axis is vertical, and revolute pair R13 is vertical with revolute pair R14 axis；
The simple branch b is by revolute pair R15, prismatic pair P16, revolute pair R17, revolute pair R18, revolute pair R19, the 5th connection
Bar (5), the 6th connecting rod (6), the 7th connecting rod (7), the 8th connecting rod (8), the 9th connecting rod (9) composition；Wherein the 5th connects
One end of extension bar (5) connect by revolute pair R15 with fixed platform (N), the 5th connecting rod (5) other end pass through prismatic pair P16 and
One end of 6th connecting rod (6) connects, and the 6th connecting rod (6) other end passes through one end of revolute pair R17 and the 7th connecting rod (7)
The other end of connection, the 7th connecting rod (7) is connect by revolute pair R18 with the 8th connecting rod (8) one end, the 8th connecting rod (8)
The other end connect with the 9th connecting rod (9) one end by revolute pair R19, the end of the 9th connecting rod (9) and sub- moving platform (P)
Connection；Wherein revolute pair R15 is parallel with revolute pair R17 axis, and revolute pair R18 is parallel with revolute pair R19 axis, revolute pair R15
Vertical with prismatic pair P16 axis, revolute pair R17 is vertical with revolute pair R18 axis；
" plane composed by the axis of revolute pair R13 and the axis of revolute pair R14 " with " axis of revolute pair R17 and turn
Plane composed by the axis of dynamic secondary R18 " is overlapped；Prismatic pair P12 and prismatic pair P16 can be respectively parallel to revolute pair by axis
The revolute pair of R11 and revolute pair R15 substitution.
5. the parallel institution of three-dimensional mobile one-dimensional rotation according to claim 1, it is characterised in that: the complexity branch II
The complex mechanism for having two-dimension translational by one passes through the 14th connecting rod (14) one circle being fixed on moving platform (M) of series connection
Column secondary C26 is formed.
6. the parallel institution of three-dimensional mobile one-dimensional rotation according to claim 5, it is characterised in that: described to have two-dimentional put down
The complex mechanism of shifting includes two identical simple branches, revolute pair R23, two identical simple branch one end with
Fixed platform (N) connection, two articles of identical simple branch other ends pass through the one of revolute pair R23 and the 14th connecting rod (14)
End connection.
7. the parallel institution of three-dimensional mobile one-dimensional rotation according to claim 6, it is characterised in that: two complete phases
Same simple branch specific structure are as follows: one end of the tenth connecting rod (10) is connect by revolute pair R21 with fixed platform (N), and the tenth
Connecting rod (10) other end is connect by prismatic pair P22 with one end of the 11st connecting rod (11), the 11st connecting rod (11) end
End is connect with revolute pair R23；One end of 12nd connecting rod (12) is connect by revolute pair R24 with fixed platform (N), and the 12nd connects
Extension bar (12) other end is connect by prismatic pair P25 with one end of the 13rd connecting rod (13), the 13rd connecting rod (13) end
It is connect with revolute pair R23；
The axis of the revolute pair R21 of the complex mechanism for having two-dimension translational, revolute pair R23, revolute pair R24 and cylindrical pair C26
Line is parallel to each other, and prismatic pair P22 is vertical with the axis of revolute pair R21, and prismatic pair P25 is vertical with the axis of revolute pair R24；
The complex mechanism for having two-dimension translational is triangle, and revolute pair R21, revolute pair R23 and revolute pair R24 distinguish position
In on three vertex of triangle.
8. the parallel institution of three-dimensional mobile one-dimensional rotation according to claim 1, it is characterised in that: the simple branch III
For no constrained branched chain；Using SPS structure, specifically: one end of the 15th connecting rod (15) passes through ball secondary S31 and fixed platform (N)
Connection, the 15th connecting rod (15) other end are connect by prismatic pair P32 with one end of the 16th connecting rod (16), and the 16th connects
The end of extension bar (16) is connect with the ball secondary S33 being connected on moving platform (M)；Or use RSS structure.
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| CN201821740485.8U CN209207497U (en) | 2018-10-26 | 2018-10-26 | A kind of parallel institution of three-dimensional mobile one-dimensional rotation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278023A (en) * | 2018-10-26 | 2019-01-29 | 昆明理工大学 | A kind of parallel institution of three-dimensional mobile one-dimensional rotation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278023A (en) * | 2018-10-26 | 2019-01-29 | 昆明理工大学 | A kind of parallel institution of three-dimensional mobile one-dimensional rotation |
| CN109278023B (en) * | 2018-10-26 | 2023-12-05 | 昆明理工大学 | Parallel mechanism capable of moving in three dimensions and rotating in one dimension |
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