CN205229187U - Little angle of rotation mechanism of high accuracy - Google Patents
Little angle of rotation mechanism of high accuracy Download PDFInfo
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- CN205229187U CN205229187U CN201520900463.3U CN201520900463U CN205229187U CN 205229187 U CN205229187 U CN 205229187U CN 201520900463 U CN201520900463 U CN 201520900463U CN 205229187 U CN205229187 U CN 205229187U
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Abstract
The utility model discloses a little angle of rotation mechanism of high accuracy aims at providing a simple structure, compactness, and required installation space is little, and the running accuracy is high, and the little angle of rotation mechanism of high accuracy of wafer measuring accuracy can effectively be improved in no return stroke clearance. It includes base and the rotary platform of rotatable setting on the base, characterized by, be equipped with the rotation axis supporting seat on the base, be equipped with slide rail, bearing frame and screw -nut mechanism on the rotation axis supporting seat, the slide rail is mutually perpendicular with rotary platform's rotation axis, the slider that is equipped with on the slide rail, the lead screw of screw -nut mechanism through the rotatable setting of installation bearing on the bearing frame, and this lead screw parallels with the slide rail, the screw -nut fixed connection of screw -nut mechanism on the slider, be equipped with on the rotation axis supporting seat and be used for driving lead screw pivoted driving motor.
Description
Technical field
The utility model relates to a kind of wafer tester, is specifically related to a kind of high-precision small-angle rotating mechanism of wafer sort.
Background technology
Wafer refers to the silicon wafer that silicon semiconductor production of integrated circuits is used, and its shape is circular.Need in wafer testing procedure to drive the slide holder of carrying wafer to complete low-angle precision rotation by testing apparatus, ensure that the angle of wafer pad is consistent with the angle of probe, to complete, pin is operated.At present, common wafer sort whirligig has the various ways such as pillar, disc type, drives, its complicated structure with motor or cylinder; The more important thing is, the anglec of rotation of current wafer sort whirligig is large, running accuracy is low, and whirligig exists backhaul gap, reduces running accuracy further, this causes current wafer sort whirligig can not meet the requirement of the accurate contraposition of wafer, affects wafer sort precision.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and provide a kind of structure simple, compact, required installing space is little; And running accuracy is high, without backhaul gap, the high-precision small-angle rotating mechanism of wafer sort precision effectively can be improved.
The technical solution of the utility model is:
A kind of high-precision small-angle rotating mechanism, the rotation platform comprising base and be rotatably arranged on base, described base is provided with turning axle supporting seat, turning axle supporting seat is provided with slide rail, bearing seat and leading screw and nut mechanism, the turning axle of described slide rail and rotation platform is perpendicular, the slide block that slide rail is provided with; By installing, bearing is rotating to be arranged on bearing seat the screw mandrel of described leading screw and nut mechanism, and this screw mandrel parallels with slide rail, the feed screw nut of leading screw and nut mechanism is fixedly connected on slide block, and described turning axle supporting seat is provided with the drive motor for driving screw mandrel to rotate; Tension-type cam guiding connection mechanism is provided with between described rotation platform and slide block, this tension-type cam guiding connection mechanism comprises the rotation fixed strip be fixedly installed on rotation platform, rotatably be arranged on the angle sheave that rotates on fixed strip and angle sheave can be made to abut against extension spring on slide block side, the turning axle of described angle sheave and the rotating axis parallel of rotation platform, one end of described extension spring is connected with rotation fixed strip, and the other end is connected with slide block.
It is simple, compact that the high-precision small-angle rotating mechanism of this programme has structure, the little feature of required installing space; And running accuracy is high, without backhaul gap, can effectively improve wafer sort precision.
As preferably, bearing seat is provided with the installation circular hole coaxial with screw mandrel, described screw mandrel is provided with positive stop lug boss and set nut, described installation bearing is between positive stop lug boss and set nut, described installation shaft contracts the first needle roller thrust bearing drawn together and be set in successively on screw mandrel, first deep groove ball bearing, second deep groove ball bearing and the second needle roller thrust bearing, described first deep groove ball bearing and the second deep groove ball bearing are positioned at installs circular hole, the external diameter of the first deep groove ball bearing and the second deep groove ball bearing is identical, and the external diameter of the first deep groove ball bearing is more than or equal to the internal diameter installing circular hole, described bearing seat is between the first needle roller thrust bearing and the second needle roller thrust bearing, and the external diameter of the first needle roller thrust bearing and the second needle roller thrust bearing is greater than the internal diameter installing circular hole, one end of first needle roller thrust bearing is resisted against on positive stop lug boss, and the other end is resisted against on bearing seat, one end of first needle roller thrust bearing is resisted against on bearing seat, and the other end is resisted against on set nut.
This programme structure is not only easy for installation, the more important thing is, that installs the first deep groove ball bearing in bearing, the second deep groove ball bearing and installation circular hole coordinates the diameter run-out that can prevent screw mandrel; The cooperation of positive stop lug boss, set nut, the first needle roller thrust bearing, the second needle roller thrust bearing and bearing seat can prevent the axial float of screw mandrel, thus ensure that precision and the stability of the movement of screw mandrel band movable slider, improve the running accuracy of rotation platform further.
As preferably, angle sheave is made up of guide bearing, and guide bearing is arranged on by set bolt and rotates on fixed strip.
As preferably, slide block is provided with block, and described block is provided with extension spring tensioning screw, and one end of described extension spring is connected with set bolt, and the other end is connected with extension spring tensioning screw; The side of described angle sheave is resisted against on block side.
As preferably, drive motor is servomotor, and this servomotor has scrambler, and the side of described rotation platform is fixed with grating scale and grating ruler reading head, and grating ruler reading head is connected by signal wire with scrambler.The rotation platform position signalling of reading is fed back to servomotor by the read head of this programme, controls, improve the running accuracy of rotating mechanism to form closed-loop feedback.
As preferably, the turning axle rotating fixed strip and rotation platform is perpendicular.
The beneficial effects of the utility model are: have structure simple, compact, the little feature of required installing space; And running accuracy is high, without backhaul gap, can effectively improve wafer sort precision.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of high-precision small-angle rotating mechanism of the present utility model.
Fig. 2 is a kind of part section structural representation at installation bearing place of the present utility model.
In figure: base 1, rotation platform 2, rotates fixed strip 3, extension spring 4, angle sheave 5, extension spring tensioning screw 6, block 7, turning axle supporting seat 8, slide rail 9, slide block 10, feed screw nut 11, screw mandrel 12, bearing 13, first needle roller thrust bearing 131, first deep groove ball bearing 132, second deep groove ball bearing 133 and the second needle roller thrust bearing 134 are installed, bearing seat 14, set nut 15, shaft coupling 16, motor fixing seat 17, drive motor 18.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
As shown in Figure 1, a kind of high-precision small-angle rotating mechanism comprises base 1 and is rotatably arranged on the rotation platform 2 on base.The turning axle of rotation platform is vertically arranged.Base is provided with turning axle supporting seat 8.Turning axle supporting seat is provided with slide rail 9, bearing seat 14 and leading screw and nut mechanism.The turning axle of slide rail and rotation platform is perpendicular.Slide rail is horizontally disposed with.The slide block 10 that slide rail is provided with.By installing, bearing 13 is rotating to be arranged on bearing seat the screw mandrel 12 of leading screw and nut mechanism, and this screw mandrel parallels with slide rail.The feed screw nut 11 of leading screw and nut mechanism is fixedly connected on slide block.
As shown in Figure 1 and Figure 2, bearing seat is provided with the installation circular hole coaxial with screw mandrel.Screw mandrel is provided with positive stop lug boss and set nut 15.Bearing is installed between positive stop lug boss and set nut.Installation shaft contracts the first needle roller thrust bearing 131, first deep groove ball bearing 132, second deep groove ball bearing 133 and the second needle roller thrust bearing 134 drawn together and be set in successively on screw mandrel.First deep groove ball bearing and the second deep groove ball bearing are positioned at installs circular hole.The external diameter of the first deep groove ball bearing and the second deep groove ball bearing is identical, and the external diameter of the first deep groove ball bearing is more than or equal to the internal diameter installing circular hole.Bearing seat is between the first needle roller thrust bearing and the second needle roller thrust bearing, and the external diameter of the first needle roller thrust bearing and the second needle roller thrust bearing is greater than the internal diameter installing circular hole.One end of first needle roller thrust bearing is resisted against on positive stop lug boss, and the other end is resisted against on bearing seat; One end of first needle roller thrust bearing is resisted against on bearing seat, and the other end is resisted against on set nut.
Turning axle supporting seat is provided with the drive motor 18 for driving screw mandrel to rotate.Turning axle supporting seat is provided with motor fixing seat 17.Drive motor is arranged in motor fixing seat.The output shaft of drive motor is connected with screw mandrel by shaft coupling 16.Drive motor is servomotor.This servomotor has scrambler.The side of rotation platform is fixed with grating scale and grating ruler reading head, and grating ruler reading head is connected by signal wire with scrambler.
Tension-type cam guiding connection mechanism is provided with between rotation platform and slide block.This tension-type cam guiding connection mechanism comprises the rotation fixed strip 3 be fixedly installed on rotation platform, is rotatably arranged on the angle sheave 5 that rotates on fixed strip and angle sheave can be made to abut against extension spring 4 on slide block side.The turning axle rotating fixed strip and rotation platform is perpendicular.Slide block is provided with block 7.Block is provided with extension spring tensioning screw 6.The turning axle of angle sheave and the rotating axis parallel of rotation platform.Angle sheave is made up of guide bearing, and guide bearing is arranged on rotation fixed strip by set bolt.One end of extension spring is connected with rotation fixed strip, and the other end is connected with slide block; Specifically, one end of extension spring is connected with set bolt, and the other end is connected with extension spring tensioning screw.The side of angle sheave is resisted against on block side.
The specific works process of the high-precision small-angle rotating mechanism of the present embodiment is as follows:
If rotation platform need turn clockwise: drive motor drives screw mandrel to rotate, and be with movable slider toward moving away from motor drive direction by feed screw nut; By by the angle sheave of block, tension-type cam guiding connection mechanism and rotate fixed strip and drive rotation platform 2 to turn clockwise in slide block moving process.In this process because extension spring makes the side of angle sheave abut against on block side all the time, eliminate the gap between angle sheave and block, thus ensure without backhaul gap in drive motor driven rotary platform rotary course, and then effectively improve wafer sort precision.
If rotation platform need be rotated counterclockwise: drive motor drives screw mandrel to rotate, and movable slider is with to move toward near motor drive direction by feed screw nut; By by the angle sheave of block, tension-type cam guiding connection mechanism and rotate fixed strip and drive rotation platform 2 to be rotated counterclockwise in slide block moving process.In this process because extension spring makes the side of angle sheave abut against on block side all the time, eliminate the gap between angle sheave and block, thus ensure without backhaul gap in drive motor driven rotary platform rotary course, and then effectively improve wafer sort precision.
The high-precision small-angle rotating mechanism of the present embodiment, compared with the rotating mechanism of routine, has structure simple, compact, and required installing space is little, and running accuracy is high and without backhaul gap, meet the requirement of wafer sort equipment.
Claims (6)
1. a high-precision small-angle rotating mechanism, the rotation platform comprising base and be rotatably arranged on base, it is characterized in that, described base is provided with turning axle supporting seat, turning axle supporting seat is provided with slide rail, bearing seat and leading screw and nut mechanism, the turning axle of described slide rail and rotation platform is perpendicular, the slide block that slide rail is provided with; By installing, bearing is rotating to be arranged on bearing seat the screw mandrel of described leading screw and nut mechanism, and this screw mandrel parallels with slide rail, the feed screw nut of leading screw and nut mechanism is fixedly connected on slide block, and described turning axle supporting seat is provided with the drive motor for driving screw mandrel to rotate;
Tension-type cam guiding connection mechanism is provided with between described rotation platform and slide block, this tension-type cam guiding connection mechanism comprises the rotation fixed strip be fixedly installed on rotation platform, rotatably be arranged on the angle sheave that rotates on fixed strip and angle sheave can be made to abut against extension spring on slide block side, the turning axle of described angle sheave and the rotating axis parallel of rotation platform, one end of described extension spring is connected with rotation fixed strip, and the other end is connected with slide block.
2. high-precision small-angle rotating mechanism according to claim 1, it is characterized in that, described bearing seat is provided with the installation circular hole coaxial with screw mandrel, described screw mandrel is provided with positive stop lug boss and set nut, described installation bearing is between positive stop lug boss and set nut, described installation shaft contracts the first needle roller thrust bearing drawn together and be set in successively on screw mandrel, first deep groove ball bearing, second deep groove ball bearing and the second needle roller thrust bearing, described first deep groove ball bearing and the second deep groove ball bearing are positioned at installs circular hole, the external diameter of the first deep groove ball bearing and the second deep groove ball bearing is identical, and the external diameter of the first deep groove ball bearing is more than or equal to the internal diameter installing circular hole, described bearing seat is between the first needle roller thrust bearing and the second needle roller thrust bearing, and the external diameter of the first needle roller thrust bearing and the second needle roller thrust bearing is greater than the internal diameter installing circular hole, one end of first needle roller thrust bearing is resisted against on positive stop lug boss, and the other end is resisted against on bearing seat, one end of first needle roller thrust bearing is resisted against on bearing seat, and the other end is resisted against on set nut.
3. high-precision small-angle rotating mechanism according to claim 1 and 2, is characterized in that, described angle sheave is made up of guide bearing, and guide bearing is arranged on rotation fixed strip by set bolt.
4. high-precision small-angle rotating mechanism according to claim 3, is characterized in that, described slide block is provided with block, and described block is provided with extension spring tensioning screw, and one end of described extension spring is connected with set bolt, and the other end is connected with extension spring tensioning screw; The side of described angle sheave is resisted against on block side.
5. high-precision small-angle rotating mechanism according to claim 1 and 2, it is characterized in that, described drive motor is servomotor, this servomotor has scrambler, the side of described rotation platform is fixed with grating scale and grating ruler reading head, and grating ruler reading head is connected by signal wire with scrambler.
6. high-precision small-angle rotating mechanism according to claim 1 and 2, is characterized in that, the turning axle of described rotation fixed strip and rotation platform is perpendicular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520900463.3U CN205229187U (en) | 2015-11-12 | 2015-11-12 | Little angle of rotation mechanism of high accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520900463.3U CN205229187U (en) | 2015-11-12 | 2015-11-12 | Little angle of rotation mechanism of high accuracy |
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| Publication Number | Publication Date |
|---|---|
| CN205229187U true CN205229187U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520900463.3U Active CN205229187U (en) | 2015-11-12 | 2015-11-12 | Little angle of rotation mechanism of high accuracy |
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| CN (1) | CN205229187U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108045861A (en) * | 2017-12-28 | 2018-05-18 | 北京朗视仪器有限公司 | A kind of fixed angle rotating mechanism |
| CN114236191A (en) * | 2021-12-15 | 2022-03-25 | 山东航天电子技术研究所 | Wireless communication testing device |
-
2015
- 2015-11-12 CN CN201520900463.3U patent/CN205229187U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108045861A (en) * | 2017-12-28 | 2018-05-18 | 北京朗视仪器有限公司 | A kind of fixed angle rotating mechanism |
| CN108045861B (en) * | 2017-12-28 | 2023-11-21 | 北京朗视仪器股份有限公司 | Fixed angle rotary mechanism |
| CN114236191A (en) * | 2021-12-15 | 2022-03-25 | 山东航天电子技术研究所 | Wireless communication testing device |
| CN114236191B (en) * | 2021-12-15 | 2024-01-26 | 山东航天电子技术研究所 | Wireless communication testing device |
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| GR01 | Patent grant |