CN203801154U - Surface-mounting head with micron-order rotation precision - Google Patents
Surface-mounting head with micron-order rotation precision Download PDFInfo
- Publication number
- CN203801154U CN203801154U CN201420118336.3U CN201420118336U CN203801154U CN 203801154 U CN203801154 U CN 203801154U CN 201420118336 U CN201420118336 U CN 201420118336U CN 203801154 U CN203801154 U CN 203801154U
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- CN
- China
- Prior art keywords
- mounting head
- rotating shaft
- flexible
- speed reducer
- head framework
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a surface-mounting head with a micron-order rotation precision, and specifically relates to a surface-mounting head for surface-mounting an electronic element on a circuit board. The surface-mounting head comprises a servo motor, a harmonic reducer, a surface-mounting head frame, a pressure pad, a vacuum inlet, a vacuum outlet, an angle contact bearing, a sealing sleeve, a flexible coupling and a rotation shaft. The harmonic reducer is mounted on the surface-mounting head frame, and the servo motor is mounted at the upper part of the harmonic reducer. The flexible coupling is mounted inside the surface-mounting head frame. One end of the flexible coupling is connected with the harmonic reducer, while the other end is connected with the rotation shaft. The rotation shaft is inserted into the surface-mounting head frame from the lower part of the surface-mounting head frame, and is connected with the flexible coupling. The angle contact bearing is mounted at an edge position where the rotation shaft is inserted into the surface-mounting head frame. The sealing sleeve is mounted inside the surface-mounting head frame, at a position close to the angle contact bearing. An opening inside the sealing sleeve is the vacuum inlet.
Description
Technical field
What the mounting head of a kind of micron order running accuracy of the utility model related to is a kind of for electronic devices and components being placed with to the mounting head on circuit board.
Background technology
In electronics industry, mounting head is that chip mounter is realized the critical component that mounts function, and the axle that mounts on mounting head not only rotates, and does axial linear movement; On mounting head, suction nozzle above-below direction moves and selects minitype cylinder to complete.Its function is by horizontal plane coordinate motion system, by suction nozzle, from the feeding position pickup device of feed appliance, also element is accurately placed with on the setting position of circuit board.Meanwhile, during element is transported to mounts position, utilize vacuum principle to hold securely element.But the mounting head that circuit board package is used at present, owing to only using stepping motor, exists the shortcoming of moment of torsion deficiency; If use simply stepping motor to coordinate decelerator, precision does not reach again micron-sized requirement, so be necessary to design a kind of novel mounting head, meets the actual market demand.
Summary of the invention
The utility model object is for above-mentioned weak point, and a kind of mounting head of micron order running accuracy is provided, and by stepping motor and harmonic speed reducer, has reached high moment of torsion and high-precision requirement.
A kind of mounting head of micron order running accuracy takes following technical scheme to realize: a kind of mounting head of micron order running accuracy comprises servomotor, harmonic speed reducer, mounting head framework, pressure pad, vacuum outlet, vacuum inlet, angular contact bearing, sealing shroud, flexible clutch and rotating shaft;
On mounting head framework, harmonic speed reducer is installed, on harmonic speed reducer top, servomotor is installed; Inside at mounting head framework is provided with flexible clutch, flexible clutch one end is connected with harmonic speed reducer, the other end is connected with rotating shaft, rotating shaft is inserted in mounting head framework by mounting head framework bottom, and be connected with flexible clutch, the marginal position that inserts mounting head framework in rotating shaft is provided with angular contact bearing; Be close to angular contact bearing place, in mounting head framework, sealing shroud be installed, the opening in sealing shroud is vacuum inlet;
Described rotating shaft is the hollow structure of one end sealing, in rotating shaft, away from the outer rim of one end of mounting head framework, be pasted with the pressure pad of cushioning effect, middle part in rotating shaft offers opening, with mounting head framework corresponding to opening in offer passage, the other end of passage is provided with vacuum outlet.
Described harmonic speed reducer comprises harmonic oscillator, flexible cam and rigid wheel, harmonic oscillator is arranged in flexible cam, at flexible cam, rigid wheel is installed outward, at the outer surface of flexible cam, is provided with gear, at the corresponding flexible cam of inner surface of rigid wheel, be also provided with gear.
Described angular contact bearing quantity is no less than two.
Described sealing shroud quantity is no less than two.
Harmonic Gears is to utilize the rotation of oval cam to make flexible cam and rigid wheel engagement, throw off, thereby the principle of the poor displacement of generation tooth is made.When harmonic oscillator is active, harmonic oscillator rotates in flexible cam, make flexible cam and thin-wall bearing deform (controlled strain) nearby, at this moment the gear of flexible cam just enters the between cog of (engagement) or disengagement (nibble from) rigid wheel in the process of distortion, at the two ends of harmonic oscillator, in engagement completely, and the tooth of all the other directions is just in completely and throws off.The now continuous rotation of harmonic oscillator, just make between flexible cam and rigid wheel engaging-in-mesh-nibble-throw off these four kinds of cycle of states and back and forth constantly change original separately engagement.This phenomenon is referred to as side set motion, and this side set motion, just can become slowly running of output by the high speed rotating of input as decelerator just.
In the engagement process of gear, generally there is the tooth of 30%-50% left and right to participate in engagement.The modulus of harmonic gear is very little, the number of teeth is a lot, error between tooth and tooth is very little, add that Harmonic Gears has symmetrical region of engagement, when a lot of teeth mesh simultaneously, error between them can be cancelled out each other automatically, and the angular errors that Harmonic Gears is produced is very little, has so just greatly improved transmission accuracy.
In the mounting head of a kind of micron order running accuracy of the utility model, gearratio I=50 of harmonic speed reducer, adopt servomotor, and servomotor angular errors is than little many of stepping motor, then pass through harmonic speed reducer, angular errors is reduced again 50 times.So just can reach the object of accurate calibration.
Mounting head adopts stepping motor and harmonic speed reducer to form two effects: after one, slowing down, can increase moment of torsion, meet low-speed motion characteristic, only according to stepping, moment of torsion is not enough.Two, slow down after often the make a move precision of elongation of stepping amplified, can reach micron order.
Accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is described in further detail:
Fig. 1 is a kind of broken section structural representation of mounting head of micron order running accuracy.
Fig. 2 is a kind of overall structure schematic diagram of mounting head of micron order running accuracy.
Fig. 3 is harmonic speed reducer theory structure schematic diagram in a kind of mounting head of micron order running accuracy.
Embodiment
With reference to accompanying drawing 1-3, a kind of mounting head of micron order running accuracy comprises servomotor 1, harmonic speed reducer 2, mounting head framework 3, pressure pad 4, vacuum outlet 5, vacuum inlet 6, angular contact bearing 7, sealing shroud 8, flexible clutch 9 and rotating shaft 10;
Harmonic speed reducer 2 is installed on mounting head framework 3, on harmonic speed reducer 2 tops, servomotor 1 is installed; In the inside of mounting head framework 3, flexible clutch 9 is installed, flexible clutch 9 one end are connected with harmonic speed reducer 2, the other end is connected with rotating shaft 10, rotating shaft 10 is inserted in mounting head framework 3 by mounting head framework 3 bottoms, and be connected with flexible clutch 9, the marginal position that inserts mounting head framework 3 in rotating shaft 10 is provided with angular contact bearing 7; Be close to angular contact bearing 7 places, sealing shroud 8 is installed in mounting head framework 3, the opening in sealing shroud is vacuum inlet 6;
Described rotating shaft 10 is the hollow structure of one end sealing, in rotating shaft 10, away from the outer rim of one end of mounting head framework 3, be pasted with the pressure pad 4 of cushioning effect, middle part in rotating shaft 10 offers opening, with mounting head framework 3 corresponding to opening in offer passage, the other end of passage is provided with vacuum outlet 5.
Described harmonic speed reducer 2 comprises harmonic oscillator 2-1, flexible cam 2-2 and rigid wheel 2-3, harmonic oscillator 2-1 is arranged in flexible cam 2-2, at flexible cam 2-2, rigid wheel 2-3 is installed outward, outer surface at flexible cam 2-2 is provided with gear, at the corresponding flexible cam 2-2 of inner surface of rigid wheel 2-3, is also provided with gear.
Described angular contact bearing 7 quantity are no less than two.
Described sealing shroud 8 quantity are no less than two.
Claims (4)
1. a mounting head for micron order running accuracy, is characterized in that: comprise servomotor, harmonic speed reducer, mounting head framework, pressure pad, vacuum outlet, vacuum inlet, angular contact bearing, sealing shroud, flexible clutch and rotating shaft;
On mounting head framework, harmonic speed reducer is installed, on harmonic speed reducer top, servomotor is installed; Inside at mounting head framework is provided with flexible clutch, flexible clutch one end is connected with harmonic speed reducer, the other end is connected with rotating shaft, rotating shaft is inserted in mounting head framework by mounting head framework bottom, and be connected with flexible clutch, the marginal position that inserts mounting head framework in rotating shaft is provided with angular contact bearing; Be close to angular contact bearing place, in mounting head framework, sealing shroud be installed, the opening in sealing shroud is vacuum inlet;
Described rotating shaft is the hollow structure of one end sealing, in rotating shaft, away from the outer rim of one end of mounting head framework, be pasted with the pressure pad of cushioning effect, middle part in rotating shaft offers opening, with mounting head framework corresponding to opening in offer passage, the other end of passage is provided with vacuum outlet.
2. the mounting head of a kind of micron order running accuracy according to claim 1, it is characterized in that: described harmonic speed reducer comprises harmonic oscillator, flexible cam and rigid wheel, harmonic oscillator is arranged in flexible cam, at flexible cam, rigid wheel is installed outward, outer surface at flexible cam is provided with gear, at the corresponding flexible cam of the inner surface of rigid wheel, is also provided with gear.
3. the mounting head of a kind of micron order running accuracy according to claim 1, is characterized in that: described angular contact bearing quantity is no less than two.
4. the mounting head of a kind of micron order running accuracy according to claim 1, is characterized in that: described sealing shroud quantity is no less than two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118336.3U CN203801154U (en) | 2014-03-17 | 2014-03-17 | Surface-mounting head with micron-order rotation precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118336.3U CN203801154U (en) | 2014-03-17 | 2014-03-17 | Surface-mounting head with micron-order rotation precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203801154U true CN203801154U (en) | 2014-08-27 |
Family
ID=51383336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420118336.3U Withdrawn - After Issue CN203801154U (en) | 2014-03-17 | 2014-03-17 | Surface-mounting head with micron-order rotation precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203801154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103826393A (en) * | 2014-03-17 | 2014-05-28 | 南京欧创机电有限公司 | Placement head with micro-order rotating accuracy |
-
2014
- 2014-03-17 CN CN201420118336.3U patent/CN203801154U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103826393A (en) * | 2014-03-17 | 2014-05-28 | 南京欧创机电有限公司 | Placement head with micro-order rotating accuracy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140827 Effective date of abandoning: 20160928 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |