CN209682189U - A kind of four axis robot of high-precision - Google Patents
A kind of four axis robot of high-precision Download PDFInfo
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- CN209682189U CN209682189U CN201920002885.7U CN201920002885U CN209682189U CN 209682189 U CN209682189 U CN 209682189U CN 201920002885 U CN201920002885 U CN 201920002885U CN 209682189 U CN209682189 U CN 209682189U
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Abstract
The utility model discloses a kind of four axis robots of high-precision, include first axle linear motion pair, the second axis revolute, third axis lifting linear motion pair and the 4th axis revolute, the first axle linear motion pair is combined with the second axis revolute by connecting plate, third axis goes up and down linear motion pair and is combined with the 4th axis revolute by nut way block, passes through mechanical arm between the second axis revolute, third axis lifting linear motion pair and the 4th axis revolute and connects.The secondary linear motor using absolute value type encoder of the utility model first axle linear motion, second axis revolute using absolute value type encoder rotation direct-drive motor, third axis is using the servo motor of absolute value type encoder and the mode of lead screw transmission, 4th axis revolute using absolute value type encoder rotation direct-drive motor, all axis do not have speed reducer, therefore, have the characteristics that precision is high, speed is fast, low noise, the service life is long, maintenance is few.
Description
Technical field
The utility model relates to a kind of four axis robots, in particular to a kind of four axis robots of high-precision.
Background technique
Common industrial four axis robot main representative of plane is Scara robot or more slide unit composite structure machines
People etc., wherein Scara robot first axle and the second axis usually all use the combination of servo motor and harmonic wave speed reducing machine, precision
Harmonic wave speed reducing machine is depended entirely on the service life, the 4th axis is by the way of toothed belt transmission, so in high-precision application places
It is unworkable.And more slide unit composite structures robot is since first axle, the second axis, third axis are all using slide unit, a side
Space of planes structure is undesirable, it appears very heavy, since whole inertia is very big, speed is not also got up fastly, on the other hand such
What robot generallyd use is incremental encoder, when power down can not record position, need to be zeroed again, when in use very not
It is convenient.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of four axis robot of high-precision, first axle linear motions
For pair using the linear motor of absolute value type encoder, the second axis revolute is straight using the rotation of absolute value type encoder
Motor is driven, third axis is adopted using the servo motor of absolute value type encoder and the mode of lead screw transmission, the 4th axis revolute
It is the rotation direct-drive motor of absolute value type encoder, therefore, there is fast precision height, speed, low noise, service life length, maintenance
Few feature.
The utility model is achieved through the following technical solutions: a kind of four axis robot of high-precision, includes first axle
Moving along a straight line, pair, the second axis revolute, third axis lifting linear motion are secondary and the 4th axis revolute, the first axle straight line are transported
Dynamic pair is combined with the second axis revolute by connecting plate, and third axis lifting linear motion pair passes through with the 4th axis revolute
Nut way block is combined, and the second axis revolute, third axis lifting linear motion are secondary logical between the 4th axis revolute
Cross mechanical arm connection.
The first axle linear motion pair is directly made of line motor as a preferred technical solution,；
The second axis revolute is made of rotation direct-drive motor and mounting base, third axis lifting linear motion it is secondary by
Line slideway auxiliary, pressing plate, the second angular contact bearing, feed screw nut, lead screw, servo motor, belt wheel, synchronous belt, lead screw base, motor
Seat composition；
4th axis revolute is by rotary encoder, nut, bearing plate, the first angular contact bearing, bearing block, rotation horse
It reaches, splined nut, splined shaft composition；
The mover of line motor is connected with connecting plate, and connecting plate is connected with the rotor of rotation direct-drive motor, rotation motor
Shell is connected with mounting base, and mounting base is connected with mechanical arm, and mechanical arm is outer with lead screw base, motor cabinet and rotation motor respectively
Shell phase connects, and lead screw is mounted on lead screw base by angular contact bearing two as support, and is compressed by pressing plate, the end installation of lead screw
There is belt wheel, belt wheel is also installed on the axis of servo motor, is meshed together between the two using synchronous belt, servo motor is mounted on
On motor cabinet.
Splined shaft and splined nut constitute linear motion pair, splined nut and rotation motor as a preferred technical solution,
Rotor be connected, the top of splined shaft is supported in bearing block by the first angular contact bearing, the inner ring of the first angular contact bearing
Using nut check, the outer ring of the first angular contact bearing is compressed using bearing plate, and the axis of rotary encoder is connected with splined shaft,
The shell of rotary encoder is then connected with bearing block, and bearing block is mounted on feed screw nut by nut way block.
Servo motor and lead screw base are abreast distributed in the width direction of mechanical arm as a preferred technical solution,.
The secondary linear motor for using absolute value type encoder of first axle linear motion as a preferred technical solution, second
Axis revolute uses the rotation direct-drive motor of absolute value type encoder, and third axis lifting linear motion is secondary to be encoded using absolute value type
The servo motor and lead screw transmission of device, the 4th axis revolute use the rotation direct-drive motor of absolute value type encoder.
The rotary encoder Yu rotation motor of the 4th axis revolute are separate structure, energy as a preferred technical solution,
It follows feed screw nut to move up and down and the rotor of the rotation motor of the 4th axis is followed to rotate together.
The rotation direct-drive motor of the second axis revolute is hollow type as a preferred technical solution, and rotor is mounted on directly
On line motor, shell is installed on the robotic arm, and tracheae and cable is allowed to pass through from centre.
Servo motor and lead screw base are abreast distributed in the width direction of mechanical arm as a preferred technical solution, are used for
Shorten the length of mechanical arm and reduces head inertia.
It is compiled the beneficial effects of the utility model are: the first axle linear motion of the utility model is secondary using absolute value type
Code device linear motor, the second axis revolute using absolute value type encoder rotation direct-drive motor, third axis use
It is the servo motor of absolute value type encoder and the mode of lead screw transmission, the 4th axis revolute is using absolute value type encoder
Rotation direct-drive motor therefore have the characteristics that precision is high, speed is fast, low noise, the service life is long, maintenance is few.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the principles of the present invention figure；
Fig. 2 is the structural schematic diagram of the utility model；
Fig. 3 is the structural schematic diagram of the 4th axis revolute of the utility model；
Fig. 4 is the secondary structural schematic diagram of the utility model third axis lifting linear motion；
In figure: 101, first axle linear motion is secondary, the 102, second axis revolute, 103, third axis lifting linear motion pair,
104, the 4th axis revolute, 1, line motor, 2, connecting plate, 3, rotation direct-drive motor, 4, mounting base, 5, mechanical arm, 6, straight line
Guideway, 7, nut way block, 8, rotary encoder, 9, nut, 10, bearing plate, the 11, first angular contact bearing, 12, bearing
Seat, 13, rotation motor, 14, splined nut, 15, splined shaft, 16, pressing plate, the 17, second angular contact bearing, 18, feed screw nut,
19, lead screw, 20, servo motor, 21, belt wheel, 22, synchronous belt, 23, lead screw base, 24, motor cabinet.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
As shown in Figure 1, comprising first axle linear motion pair, the second axis revolute, third axis lifting linear motion pair and
4th axis revolute, first axle linear motion pair are combined with the second axis revolute by connecting plate, and the lifting of third axis is straight
Line kinematic pair is combined with the 4th axis revolute by nut way block, the second axis revolute, third axis lifting straight line fortune
It is connected by mechanical arm between dynamic secondary and the 4th axis revolute.
Specifically, first axle linear motion pair 101 is combined with the second axis revolute 102 by connecting plate 2, third
Axis lifting linear motion pair 103 passes through nut way block 7 with the 4th axis revolute 104 and combines, and mechanical arm 5 is connected to the
Two axis revolutes 102, third axis lifting linear motion pair 103 and the 4th axis revolute 104.First axle linear motion pair 101 is straight
It connects and is made of line motor 1, the second axis revolute 102 is made of rotation direct-drive motor 3 and mounting base 4, and third axis goes up and down straight line
Kinematic pair 103 by line slideway auxiliary 6, pressing plate 16, the second angular contact bearing 17, feed screw nut 18, lead screw 19, servo motor 20,
Belt wheel 21, synchronous belt 22, lead screw base 23, motor cabinet 24 form, and the 4th axis revolute 104 is by rotary encoder 8, nut 9, bearing
Pressing plate 10, the first angular contact bearing 11, bearing block 12, rotation motor 13, splined nut 14, splined shaft 15 form.
The mover of line motor 1 is connected with connecting plate 2, and connecting plate 2 is connected with the rotor of rotation direct-drive motor 3, rotates horse
Shell up to 3 is connected with mounting base 4, and mounting base 4 is connected with mechanical arm 5, mechanical arm 5 respectively with lead screw base 23, motor cabinet 24 with
And the shell of rotation motor 13 is connected, lead screw 19 is mounted on lead screw base 23 by angular contact bearing 2 17 as support, by pressing
Plate 16 compresses, and the end of lead screw 19 is equipped with belt wheel 21, is also equipped with belt wheel 21 on the axis of servo motor 20, uses between the two
Synchronous belt 22 meshes together, and servo motor 20 is mounted on motor cabinet 24.
Splined shaft 15 and splined nut 14 constitute linear motion pair, wherein the rotor phase of splined nut 14 and rotation motor 13
Even, the top of splined shaft 15 is supported in bearing block 12 by angular contact bearing 1, and the inner ring of angular contact bearing 1 uses
Nut 9 is locked, and the outer ring of angular contact bearing 1 is compressed using bearing plate 10, axis and 15 phase of splined shaft of rotary encoder 8
Even, the shell of rotary encoder 8 is then connected with bearing block 12, and bearing block 12 is mounted on feed screw nut 18 by nut way block 7
On.
Therefore, when line motor 1 drives, rotation direct-drive motor 3, which is followed by, to be moved in a straight line, when rotation direct-drive motor 3
When driving, mechanical arm 5 is followed by rotation, and when servo motor 20 drives, splined shaft 15 is followed by up and down motion, works as rotation motor
When 13 driving, splined shaft 15 is followed by rotation.
In the present embodiment, feedback coder of the rotary encoder 8 as rotation motor 13, it is to follow splined shaft 15 together
Oscilaltion, this requires splined shaft 15 and the rotary gap of splined nut 14 are very small, the utility model is using zero
Turn round the splined builtup of back clearance.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, any change or replacement expected without creative work be should be covered within the scope of the utility model.
Therefore, the protection scope of the utility model should be determined by the scope of protection defined in the claims.
Claims (8)
1. a kind of four axis robot of high-precision, it is characterised in that: secondary, the second axis revolute, third comprising first axle linear motion
Axis lifting linear motion is secondary and the 4th axis revolute, the first axle linear motion pair pass through connecting plate with the second axis revolute
It combines, third axis lifting linear motion pair is combined with the 4th axis revolute by nut way block, the second axis
Pass through mechanical arm between revolute, third axis lifting linear motion pair and the 4th axis revolute to connect.
2. four axis robots of high-precision as described in claim 1, it is characterised in that: the first axle linear motion it is secondary directly by
Line motor is constituted；
The second axis revolute is made of rotation direct-drive motor and mounting base, and the third axis lifting linear motion pair is by straight line
Guideway, pressing plate, the second angular contact bearing, feed screw nut, lead screw, servo motor, belt wheel, synchronous belt, lead screw base, motor cabinet group
At；
4th axis revolute is by rotary encoder, nut, bearing plate, the first angular contact bearing, bearing block, rotation motor, flower
Key nut, splined shaft composition；
The mover of line motor is connected with connecting plate, and connecting plate is connected with the rotor of rotation direct-drive motor, the shell of rotation motor
It is connected with mounting base, mounting base is connected with mechanical arm, the mechanical arm outer shell phase with lead screw base, motor cabinet and rotation motor respectively
Even, lead screw is mounted on lead screw base by angular contact bearing two as support, and is compressed by pressing plate, and the end of lead screw is provided with
It takes turns, belt wheel is also installed on the axis of servo motor, is meshed together between the two using synchronous belt, servo motor is mounted on motor
On seat.
3. four axis robots of high-precision as claimed in claim 2, it is characterised in that: splined shaft and splined nut constitute straight line fortune
Dynamic pair, splined nut are connected with the rotor of rotation motor, and the top of splined shaft is supported on bearing block by the first angular contact bearing
Interior, the inner ring of the first angular contact bearing uses nut check, and the outer ring of the first angular contact bearing is compressed using bearing plate, rotation
The axis of encoder is connected with splined shaft, and the shell of rotary encoder is then connected with bearing block, and bearing block is pacified by nut way block
On feed screw nut.
4. four axis robots of high-precision as claimed in claim 2, it is characterised in that: servo motor is abreast distributed with lead screw base
In the width direction of mechanical arm.
5. four axis robots of high-precision as claimed in claim 2, it is characterised in that: first axle linear motion is secondary to use absolute value
The linear motor of type encoder, the second axis revolute use the rotation direct-drive motor of absolute value type encoder, and the lifting of third axis is straight
Line kinematic pair uses the servo motor and lead screw transmission of absolute value type encoder, and the 4th axis revolute uses absolute value type encoder
Rotation direct-drive motor.
6. four axis robots of high-precision as claimed in claim 5, it is characterised in that: the rotary encoder of the 4th axis revolute with
Rotation motor is separate structure, and feed screw nut can be followed to move up and down and follow the rotor of the rotation motor of the 4th axis together
Rotation.
7. four axis robots of high-precision as described in claim 1, it is characterised in that: the rotation direct-drive motor of the second axis revolute
For hollow type, rotor is mounted on line motor, and shell is installed on the robotic arm, and tracheae and cable is allowed to pass through from centre.
8. four axis robots of high-precision as claimed in claim 2, it is characterised in that: servo motor is abreast distributed with lead screw base
In the width direction of mechanical arm, for shortening the length of mechanical arm and reducing head inertia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920002885.7U CN209682189U (en) | 2019-01-02 | 2019-01-02 | A kind of four axis robot of high-precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920002885.7U CN209682189U (en) | 2019-01-02 | 2019-01-02 | A kind of four axis robot of high-precision |
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| Publication Number | Publication Date |
|---|---|
| CN209682189U true CN209682189U (en) | 2019-11-26 |
Family
ID=68598093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920002885.7U Active CN209682189U (en) | 2019-01-02 | 2019-01-02 | A kind of four axis robot of high-precision |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676594A (en) * | 2019-01-02 | 2019-04-26 | 深圳市领略数控设备有限公司 | A kind of four axis robot of high-precision |
| CN113650048A (en) * | 2021-09-09 | 2021-11-16 | 苏州沃夫达自动化科技有限公司 | Three-axis and four-axis joint structure of SCARA robot and SCARA robot |
-
2019
- 2019-01-02 CN CN201920002885.7U patent/CN209682189U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676594A (en) * | 2019-01-02 | 2019-04-26 | 深圳市领略数控设备有限公司 | A kind of four axis robot of high-precision |
| CN113650048A (en) * | 2021-09-09 | 2021-11-16 | 苏州沃夫达自动化科技有限公司 | Three-axis and four-axis joint structure of SCARA robot and SCARA robot |
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