CN111197643A - High-precision linear motion mechanism - Google Patents
High-precision linear motion mechanism Download PDFInfo
- Publication number
- CN111197643A CN111197643A CN202010097594.8A CN202010097594A CN111197643A CN 111197643 A CN111197643 A CN 111197643A CN 202010097594 A CN202010097594 A CN 202010097594A CN 111197643 A CN111197643 A CN 111197643A
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- China
- Prior art keywords
- guide rail
- right guide
- left guide
- threaded shaft
- base
- 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.)
- Pending
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- 230000007246 mechanism Effects 0.000 title claims abstract description 59
- 230000033001 locomotion Effects 0.000 title claims abstract description 25
- 230000004323 axial length Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/005—Guide rails or tracks for a linear bearing, i.e. adapted for movement of a carriage or bearing body there along
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/02—Sliding-contact bearings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2202/00—Solid materials defined by their properties
- F16C2202/50—Lubricating properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2075—Coaxial drive motors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a high-precision linear motion mechanism which comprises a motor, a motor output threaded shaft, a base, a left guide rail, a right guide rail and an actuating mechanism, wherein the motor output threaded shaft is arranged on the base; the motor outputs power to the motor output threaded shaft; one end of the executing mechanism, which is close to the motor output threaded shaft, is provided with an internal thread, and the external thread of the motor output threaded shaft is in transmission fit with the internal thread of the executing mechanism; the left guide rail and the right guide rail are respectively embedded on the left side and the right side of the base, and bosses are respectively arranged on the opposite sides of the left guide rail and the right guide rail; the rear part of the actuating mechanism is embedded between the left guide rail and the right guide rail, grooves which extend backwards and are communicated with the outside at the rear ends are respectively arranged at the two sides of the rear part of the actuating mechanism, and the grooves at the two sides are respectively matched with bosses of the left guide rail and the right guide rail; the axial length of the base is greater than the axial length of the actuator, and the actuator can move linearly in the base. The invention has simple and reliable structure, high precision and small occupied space.
Description
Technical Field
The invention relates to the technical field of linear motion actuating mechanisms, in particular to a high-precision linear motion mechanism.
Background
Analytical instruments widely used in the fields of biology, chemistry, medical treatment and the like need to realize high-precision linear motion of an actuating mechanism in a narrow space range, so that the functions of sample introduction, sample injection and the like are realized. Fig. 1 is a schematic structural diagram of a conventional linear motion mechanism. An output shaft of the motor 101 is connected to the lead screw 103 through the coupler 102, the motor 101 drives the lead screw 103 to rotate, and due to the limiting effect of the sliding guide rail 106, the nut 104 is driven to move linearly upwards, so that the actuating mechanism 105 is driven to move linearly upwards. Traditional linear motion mechanism uses lead screw and linear guide matched with motion mode, though can satisfy the requirement, but occupation space is big, and the cooperation is complicated, occupies a large amount of spaces of instrument.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a high-precision linear motion mechanism which is simple and reliable in structure, high in precision and small in occupied space.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-precision linear motion mechanism comprises a motor, a motor output threaded shaft, a base, a left guide rail, a right guide rail and an actuating mechanism; the motor outputs power to the motor output threaded shaft; one end of the executing mechanism, which is close to the motor output threaded shaft, is provided with an internal thread, and the external thread of the motor output threaded shaft is in transmission fit with the internal thread of the executing mechanism; the left guide rail and the right guide rail are respectively embedded on the left side and the right side of the base, and bosses are respectively arranged on the opposite sides of the left guide rail and the right guide rail; the rear part of the actuating mechanism is embedded between the left guide rail and the right guide rail, grooves which extend backwards and are communicated with the outside at the rear ends are respectively arranged at the two sides of the rear part of the actuating mechanism, and the grooves at the two sides are respectively matched with bosses of the left guide rail and the right guide rail; the axial length of the base is greater than the axial length of the actuator, and the actuator can move linearly in the base.
Further, the left guide rail and the right guide rail are a dovetail groove left guide rail and a dovetail groove right guide rail respectively.
Further, the rear end of the base is rigidly connected with the housing of the motor.
Further, the left guide rail and the right guide rail are made of self-lubricating materials.
Furthermore, the bosses of the left guide rail and the right guide rail are respectively and tightly embedded into the grooves at two sides of the actuating mechanism.
The invention also provides a utilization method of the high-precision linear motion mechanism, which comprises the following specific processes:
the motor is started, the motor drives the motor output threaded shaft to rotate, the external thread of the motor output threaded shaft is in transmission fit with the internal thread of the executing mechanism, and the executing mechanism is limited by the left guide rail and the right guide rail and cannot rotate due to the fact that the boss is arranged on the part, opposite to the left guide rail and the right guide rail, of one side of the executing mechanism in a nested mode and the grooves are formed in the two sides of the executing mechanism, and therefore the executing mechanism can move linearly along the left guide rail and the right guide rail.
The invention has the beneficial effects that: the high-precision linear motion mechanism has high integration level and small occupied space, is very suitable for an analysis instrument with small volume, and has the advantages of reliability, high precision, simple structure and easy manufacture.
Drawings
Fig. 1 is a schematic structural view of a conventional linear motion mechanism;
fig. 2 is a sectional view of a high-precision linear motion mechanism in embodiment 1 of the present invention;
fig. 3 is a partial sectional view of a high-precision linear motion mechanism in embodiment 1 of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.
Example 1
The embodiment provides a high-precision linear motion mechanism, as shown in fig. 2-3, which includes a motor 1, a motor output threaded shaft 6, a base 2, a left guide rail 3, a right guide rail 5, and an actuator 4; the motor 1 outputs power to the motor output threaded shaft 6; one end of the actuating mechanism 4 close to the motor output threaded shaft 6 is provided with an internal thread, and the external thread of the motor output threaded shaft 6 is in transmission fit with the internal thread of the actuating mechanism 4; the left guide rail 3 and the right guide rail 5 are respectively nested at the left side and the right side of the base 2, and bosses 31 and 51 are respectively arranged at the opposite sides of the left guide rail and the right guide rail; the rear part of the actuating mechanism 4 is embedded between the left guide rail 3 and the right guide rail 5, grooves 41 and 42 which extend backwards and are communicated with the outside at the rear ends are respectively arranged at the two sides of the rear part of the actuating mechanism, and the grooves 41 and 42 at the two sides are respectively matched with the bosses 31 and 51 of the left guide rail 3 and the right guide rail 5; the axial length of the base 2 is greater than the axial length of the actuator 4, and the actuator 4 can move linearly in the base 2.
Further, the left guide rail 3 and the right guide rail 5 are a dovetail groove left guide rail and a dovetail groove right guide rail, respectively.
Further, the rear end of the base 2 is rigidly connected to the housing of the motor 1.
Further, the left guide rail 3 and the right guide rail 5 may be made of self-lubricating materials.
Further, the bosses 31, 51 of the left rail 3 and the right rail 5 are respectively tightly fitted into the grooves 41, 42 on both sides of the actuator 4. When the boss and the groove are tightly matched, the operation precision of the actuating mechanism 4 can be greatly improved.
Example 2
The embodiment provides a method for utilizing a high-precision linear motion mechanism as described in embodiment 1, and the specific process is as follows:
the motor 1 is started, the motor 1 drives the motor output threaded shaft 6 to rotate, the external threads of the motor output threaded shaft 6 are in transmission fit with the internal threads of the executing mechanism 4, and the executing mechanism 4 is limited by the left guide rail 3 and the right guide rail 5 and cannot rotate due to the fact that the boss is arranged on the part, opposite to the left guide rail 3 and the right guide rail 5, of one side and the grooves are embedded in the two sides of the executing mechanism 4, and therefore the executing mechanism 2 can move linearly along the left guide rail and the right guide rail.
Various corresponding changes and modifications can be made by those skilled in the art based on the above technical solutions and concepts, and all such changes and modifications should be included in the protection scope of the present invention.
Claims (6)
1. A high-precision linear motion mechanism is characterized by comprising a motor (1), a motor output threaded shaft (6), a base (2), a left guide rail (3), a right guide rail (5) and an actuating mechanism (4); the motor (1) outputs power to the motor output threaded shaft (6); one end of the executing mechanism (4) close to the motor output threaded shaft (6) is provided with an internal thread, and the external thread of the motor output threaded shaft (6) is in transmission fit with the internal thread of the executing mechanism (4); the left guide rail (3) and the right guide rail (5) are respectively embedded on the left side and the right side of the base (2), and bosses are respectively arranged on the opposite sides of the left guide rail and the right guide rail; the rear part of the actuating mechanism (4) is embedded between the left guide rail (3) and the right guide rail (5), grooves which extend backwards and are communicated with the outside at the rear ends are respectively arranged at the two sides of the rear part of the actuating mechanism, and the grooves at the two sides are respectively matched with bosses of the left guide rail (3) and the right guide rail (5); the axial length of the base (2) is larger than that of the actuating mechanism (4), and the actuating mechanism (4) can move linearly in the base (2).
2. A high-precision linear motion mechanism according to claim 1, wherein the left guide rail (3) and the right guide rail (5) are a dovetail groove left guide rail and a dovetail groove right guide rail, respectively.
3. A high precision linear motion mechanism according to claim 1, characterized in that the rear end of the base (2) is rigidly connected to the housing of the motor (1).
4. A high-precision linear motion mechanism according to claim 1, wherein the left guide rail (3) and the right guide rail (5) are made of self-lubricating materials.
5. A high-precision linear motion mechanism as claimed in claim 1 or 4, characterized in that the bosses of the left guide rail (3) and the right guide rail (5) are respectively and tightly embedded in the grooves at two sides of the actuator (4).
6. A utilization method of a high-precision linear motion mechanism according to any one of claims 1 to 5, characterized by comprising the following specific processes:
starting motor (1), motor (1) drives motor output threaded shaft (6) and rotates, and the external screw thread of motor output threaded shaft (6) cooperates with the internal thread transmission of actuating mechanism (4), because left guide rail (3) and right guide rail (5) relative one side part are equipped with the boss and the recess of nestification in actuating mechanism (4) both sides, consequently actuating mechanism (4) are restricted by left guide rail (3) and right guide rail (5), can not rotate to along left guide rail and right guide rail rectilinear movement in base (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010097594.8A CN111197643A (en) | 2020-02-17 | 2020-02-17 | High-precision linear motion mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010097594.8A CN111197643A (en) | 2020-02-17 | 2020-02-17 | High-precision linear motion mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111197643A true CN111197643A (en) | 2020-05-26 |
Family
ID=70745409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010097594.8A Pending CN111197643A (en) | 2020-02-17 | 2020-02-17 | High-precision linear motion mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111197643A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219795A (en) * | 1997-10-20 | 1999-06-16 | Smc株式会社 | Actuator |
| CN201184400Y (en) * | 2008-04-22 | 2009-01-21 | 北京航空航天大学 | Telescopic mechanism with straight-line guidance |
| CN101922540A (en) * | 2010-08-16 | 2010-12-22 | 李敬宇 | Linear motion actuating mechanism and device utilizing same |
| CN102931760A (en) * | 2012-11-15 | 2013-02-13 | 北京自动化控制设备研究所 | Compact electric servo mechanism for linear displacement |
| CN204179920U (en) * | 2014-09-09 | 2015-02-25 | 雅科贝思精密机电(上海)有限公司 | Linear electric motors module |
| CN206419448U (en) * | 2016-12-30 | 2017-08-18 | 深圳威洛博机器人有限公司 | A kind of direct-connected electronic slide unit |
| CN109185410A (en) * | 2018-09-18 | 2019-01-11 | 深圳市智康新能科技有限公司 | High-precision push rod |
| CN211550429U (en) * | 2020-02-17 | 2020-09-22 | 公安部第一研究所 | High-precision linear motion mechanism |
-
2020
- 2020-02-17 CN CN202010097594.8A patent/CN111197643A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219795A (en) * | 1997-10-20 | 1999-06-16 | Smc株式会社 | Actuator |
| CN201184400Y (en) * | 2008-04-22 | 2009-01-21 | 北京航空航天大学 | Telescopic mechanism with straight-line guidance |
| CN101922540A (en) * | 2010-08-16 | 2010-12-22 | 李敬宇 | Linear motion actuating mechanism and device utilizing same |
| CN102931760A (en) * | 2012-11-15 | 2013-02-13 | 北京自动化控制设备研究所 | Compact electric servo mechanism for linear displacement |
| CN204179920U (en) * | 2014-09-09 | 2015-02-25 | 雅科贝思精密机电(上海)有限公司 | Linear electric motors module |
| CN206419448U (en) * | 2016-12-30 | 2017-08-18 | 深圳威洛博机器人有限公司 | A kind of direct-connected electronic slide unit |
| CN109185410A (en) * | 2018-09-18 | 2019-01-11 | 深圳市智康新能科技有限公司 | High-precision push rod |
| CN211550429U (en) * | 2020-02-17 | 2020-09-22 | 公安部第一研究所 | High-precision linear motion mechanism |
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