CN207539286U - The cylindrical cam drive mechanism of infra-red thermal imaging system - Google Patents
The cylindrical cam drive mechanism of infra-red thermal imaging system Download PDFInfo
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- CN207539286U CN207539286U CN201721548896.2U CN201721548896U CN207539286U CN 207539286 U CN207539286 U CN 207539286U CN 201721548896 U CN201721548896 U CN 201721548896U CN 207539286 U CN207539286 U CN 207539286U
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Abstract
A kind of cylindrical cam drive mechanism of infra-red thermal imaging system, including cylinder external cam, cylinder cam ring, lead, frame, cylinder external cam is equipped with curved slot, frame is located in cylinder external cam, it is fixed in the suit cylinder external cam of cylinder cam ring one end and with frame, lead front end is spirally connected with the frame, and rear end is located in the curved slot of cylinder external cam；Clutch shaft bearing and second bearing are set on lead, the clutch shaft bearing is contacted with the curved slot side wall of cylinder external cam, second bearing is located at the lower section of clutch shaft bearing, and bearing shim is respectively equipped between clutch shaft bearing and second bearing, between second bearing and frame.
Description
Technical field
The utility model belongs to infrared thermal imaging technique field, is related to a kind of cylindrical cam transmission of infra-red thermal imaging system
Structure.
Background technology
Cylindrical cam drive mechanism is applied in infrared thermal imaging technique field than wide.The transmission of cylindrical cam mechanism is special
Point is simple in structure, compact, design is convenient, the arbitrary desired movement of driven member can be achieved, and is best suited for that driven member is required to make interval
The occasion of movement.The structure of cylindrical cam system used in common infra-red thermal imaging system as shown in Figure 1 and Figure 2, mainly includes
Cylinder external cam 1, cylinder external cam 1 are equipped with curved slot 2, and the front end of lead 3 and frame 4 are spirally connected fixation, and rear end is located at
In the curved slot of cylinder external cam, 5 front end sleeve of cylinder cam ring is mounted in cylinder external cam.Cylinder evagination is driven by motor
1 rotation of wheel, makes lead 3 be slided along the curved slot 2 of cylinder external cam, lead 3 drives frame 4 to move.Due to lead
There are sliding frictions during with cylindrical cam relative motion, and frictional force is larger, and the output torque for needing motor is bigger；Larger rubs
Wiping power causes component easy to wear, can also generate clast, influence the precision and service life of optical system.
Invention content
The purpose of this utility model is in view of the above-mentioned problems, improving the existing cylindrical cam transmission knot of infra-red thermal imaging system
Structure reduces frictional force of the cylindrical cam during rotation between lead.
The technical solution of the utility model is as follows：
A kind of cylindrical cam drive mechanism of infra-red thermal imaging system including cylinder external cam, cylinder cam ring, is oriented to
Column, frame, cylinder external cam are equipped with curved slot, and frame is located in cylinder external cam, cylinder cam ring one end suit cylinder
It is fixed in external cam and with frame, lead front end is spirally connected with the frame, and rear end is located in the curved slot of cylinder external cam,
It is characterized in that：Clutch shaft bearing and second bearing, the clutch shaft bearing and the song of cylinder external cam are set on the lead
Line groove side wall contacts, and second bearing is located at the lower section of clutch shaft bearing, between clutch shaft bearing and second bearing, second bearing and mirror
Bearing shim is respectively equipped between frame.
Cylindrical cam is changed to rolling friction by the utility model with being oriented to the sliding friction of intercolumniation, and frictional force greatly reduces,
Motor output torque is needed to reduce, the reduction of corresponding power.Wear intensity between component mitigates significantly, not only increases system use
Service life, precision, the stability of infrared equipment also accordingly improve.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of existing cylindrical cam transmission mechanism；
Fig. 2 is the external structure schematic diagram of existing cylindrical cam transmission mechanism；
Fig. 3 is the schematic cross-sectional view of the cylindrical cam transmission mechanism of the utility model；
Fig. 4 is the external structure schematic diagram of the cylindrical cam transmission mechanism of the utility model.
Specific embodiment
As shown in Figure 3, Figure 4, the cylindrical cam drive mechanism of the improved infra-red thermal imaging system of the utility model, including circle
Column external cam 1, cylinder cam ring 5, lead 3, frame 4, cylinder external cam are equipped with curved slot 2, and frame 4 is located at outside cylinder
In cam, fixed in 5 one end of cylinder cam ring suit cylinder external cam 1 and with frame 4,3 front end of lead and 4 spiral shell of frame
It connecing, rear end is located in the curved slot 2 of cylinder external cam, is set with clutch shaft bearing 6 and second bearing 7 on lead 3, and described
One bearing 6 is contacted with 2 side wall of curved slot of cylinder external cam, and the second axis 7 is held positioned at the lower section of clutch shaft bearing 6, cylinder evagination
Between wheel and frame, bearing shim 8 is respectively equipped between clutch shaft bearing 6 and second bearing 7, between second bearing 7 and frame 4.
During utility model works, motor drives cylinder external cam 1 to rotate, and makes lead 3 along the song in cylinder external cam
Line groove 2 moves.Lead 3 drives frame 4 and cylinder cam ring 5 to rotate.Due to the clutch shaft bearing 6 that is set on lead 3 with
Curved slot side wall contact in cylinder external cam, what is generated therebetween is mainly rolling friction, and frictional resistance very little is electric
The torque of machine output very little can just drive whole system to operate.Bearing shim 8 mainly prevents clutch shaft bearing and second bearing
Between, being in direct contact between second bearing and frame, reduce frictional force, reduce abrasion.
Claims (1)
1. a kind of cylindrical cam drive mechanism of infra-red thermal imaging system, including cylinder external cam, cylinder cam ring, lead,
Frame, cylinder external cam are equipped with curved slot, and frame is located in cylinder external cam, cylinder cam ring one end suit cylinder evagination
It is fixed in wheel and with frame, lead front end is spirally connected with the frame, and rear end is located in the curved slot of cylinder external cam, special
Sign is：Clutch shaft bearing and second bearing are set on the lead, the clutch shaft bearing and the curve of cylinder external cam are recessed
Groove sidewall contacts, and second bearing is located at the lower section of clutch shaft bearing, between clutch shaft bearing and second bearing, second bearing and frame it
Between be respectively equipped with bearing shim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721548896.2U CN207539286U (en) | 2017-11-17 | 2017-11-17 | The cylindrical cam drive mechanism of infra-red thermal imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721548896.2U CN207539286U (en) | 2017-11-17 | 2017-11-17 | The cylindrical cam drive mechanism of infra-red thermal imaging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207539286U true CN207539286U (en) | 2018-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721548896.2U Active CN207539286U (en) | 2017-11-17 | 2017-11-17 | The cylindrical cam drive mechanism of infra-red thermal imaging system |
Country Status (1)
| Country | Link |
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| CN (1) | CN207539286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795652A (en) * | 2017-11-17 | 2018-03-13 | 北京长峰科威光电技术有限公司 | The cylindrical cam drive mechanism of infra-red thermal imaging system |
-
2017
- 2017-11-17 CN CN201721548896.2U patent/CN207539286U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795652A (en) * | 2017-11-17 | 2018-03-13 | 北京长峰科威光电技术有限公司 | The cylindrical cam drive mechanism of infra-red thermal imaging system |
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