CN114166261A - Fine adjustment locking mechanism for precision measurement - Google Patents
Fine adjustment locking mechanism for precision measurement Download PDFInfo
- Publication number
- CN114166261A CN114166261A CN202111269873.9A CN202111269873A CN114166261A CN 114166261 A CN114166261 A CN 114166261A CN 202111269873 A CN202111269873 A CN 202111269873A CN 114166261 A CN114166261 A CN 114166261A
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- locking
- fine adjustment
- fine
- locking mechanism
- screw rod
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- 238000005259 measurement Methods 0.000 title claims abstract description 29
- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 5
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 238000013016 damping Methods 0.000 abstract description 10
- 230000009471 action Effects 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/20—Caging devices for moving parts when not in use
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a fine adjustment locking mechanism for precision measurement, and relates to the technical field of precision measurement. The invention comprises a shell, wherein a bearing is fixedly inserted into one end of the shell; a fine adjustment screw rod is fixedly inserted in the center of the bearing; the inner wall of the shell is in threaded connection with a locking threaded sleeve; a check ring and an elastic bushing are respectively sleeved between the inner end part of the locking screw sleeve and the peripheral side surface of the fine adjustment screw rod; steel balls are arranged between the check ring and the elastic bushing in an annular array manner; an annular retainer matched with the steel balls is fixedly inserted into the inner wall of one end of the locking screw sleeve. The locking screw sleeve is provided with a plurality of steel balls, the locking screw sleeve is provided with an inner conical surface, the inner conical surface is provided with a plurality of locking screw sleeves, the inner conical surface is provided with a plurality of retaining rings, the retaining rings are arranged on the inner conical surface, the inner conical surface is provided with a plurality of steel balls, the elastic bushing is deformed to generate friction force on the fine adjustment screw rod to form rotary damping, the rotary damping can be adjusted by rotating the locking screw sleeve, the rotary strength can be properly adjusted, the accuracy of manual alignment is improved, the rotary strength of the locking screw sleeve is increased after alignment is achieved, the locking state can be maintained, the locking is accurate, and the operation accuracy of measurement is guaranteed.
Description
Technical Field
The invention belongs to the technical field of precision measurement, and particularly relates to a fine-tuning locking mechanism for precision measurement.
Background
The measurement technology is a leading-edge science which has a professional system and covers various disciplines and is very strong in theory and practice. The basic knowledge in the aspect of the well-known measuring technology is the basis for independently finishing the measurement of the geometric parameters of the mechanical product by mastering the measuring skill. The precision measurement is established on the concept of a space coordinate system, and basic elements are points, lines and circles. In the coordinate system there may be various corresponding combinations between elements, such as point-to-point distance, point-to-line (vertical), point-to-circle distance, circle-to-line (vertical) distance, circle-to-circle (vertical) distance, circle-to-line (vertical) distance, intersection and tangent points of lines and circles, two line intersections, two circle intersections, etc.
In the actual operation process of precision measurement, the phenomenon that the manual fine adjustment screw rod knob exerts force unevenly to cause difficulty in aligning the precision measurement scribed line or the phenomenon that the line is not stably deviated after the scribed line is released can be met, so that the measurement precision data is misaligned, and even a larger measurement error can be caused. Therefore, a damping device for protecting rotation buffering is required to be arranged on the fine adjustment screw rod of the measuring instrument, and a locking mechanism for maintaining the state of the aligned reticle position is required.
Disclosure of Invention
The invention aims to provide a fine adjustment locking mechanism for precision measurement, which can enable an elastic bushing to deform to generate friction force on a fine adjustment screw rod to form rotary damping by generating centripetal force under the action of a plurality of steel balls through an inner conical surface of a locking screw sleeve and the end surface of a check ring, and solves the problem of low precision of the existing precision measurement equipment.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a fine adjustment locking mechanism for precision measurement, which comprises a shell,
a bearing is fixedly inserted into one end of the shell; a fine adjustment screw rod is fixedly inserted in the center of the bearing; the inner wall of the shell is in threaded connection with a locking threaded sleeve;
a check ring and an elastic bushing are respectively sleeved between the inner end of the locking threaded sleeve and the peripheral side surface of the fine adjustment screw rod; steel balls are arranged between the retainer ring and the elastic bushing in an annular array manner;
and an annular retainer matched with the steel balls is fixedly inserted into the inner wall of one end of the locking screw sleeve.
Furthermore, the annular array of the inner wall of the annular retainer is provided with spherical grooves with the size equivalent to that of the steel balls.
Furthermore, the elastic bushing is designed in a thin-wall structure; the elastic bushing is made of spring steel materials.
Furthermore, the fine adjustment screw rod is far away from one end part of the bearing and is positioned outside the shell, and a fine adjustment knob is fixed on the fine adjustment screw rod through a bolt.
Furthermore, a dustproof end ring is sleeved between the inner wall of the locking screw sleeve and the peripheral side face of the fine adjustment screw rod.
Furthermore, the inner wall of the locking screw sleeve is of a conical surface structure;
furthermore, the inner conical surface of the locking screw sleeve and the end surface of the retainer ring form a centripetal force through steel balls.
Further, the shell is of a cylindrical structure; and a connecting flange is arranged on the peripheral side surface of one end of the shell.
The invention has the following beneficial effects:
1. the centering force is generated by the inner conical surface of the locking threaded sleeve and the end surface of the check ring under the action of the plurality of steel balls, the elastic bushing can be deformed to generate friction force on the fine adjustment screw rod to form rotary damping, the rotary damping can be adjusted by rotating the locking threaded sleeve, the rotary strength can be properly adjusted to improve the accuracy of manual alignment, the rotary strength of the locking threaded sleeve is increased after line marking is accurately found, the locking state can be maintained, the locking is accurate, the anti-loosening is free, and the operation accuracy of measurement is ensured.
2. In the invention, the elastic bushing is made of spring steel, the thin sleeve has enough elasticity, and the friction force generated between the thin sleeve and the fine adjustment screw rod is gradually increased and even locked when the thin sleeve is stressed; when the release is carried out, the elasticity is recovered, the sliding friction with the fine adjustment screw rod is kept, the fine adjustment screw rod is flexible to rotate, the operation is convenient, and the requirement of actual use is met.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a fine-tuning locking mechanism for precision measurement according to the present invention;
fig. 2 is a schematic cross-sectional view of a fine-tuning locking mechanism for precision measurement.
Fig. 3 is an enlarged view of a portion a in fig. 2.
In the drawings, the components represented by the respective reference numerals are listed below:
the method comprises the following steps of 1-a shell, 2-a bearing, 3-a fine adjustment screw rod, 4-a locking threaded sleeve, 5-a retainer ring, 6-an elastic bushing, 7-a steel ball, 8-an annular retainer, 9-a fine adjustment knob, 10-a dustproof end ring and 11-a connecting flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention is a fine-tuning locking mechanism for precision measurement, which includes a housing 1, a bearing 2 is inserted and fixed in one end of the housing 1; a fine adjustment screw rod 3 is fixedly inserted in the center of the bearing 2; the inner wall of the shell 1 is in threaded connection with a locking threaded sleeve 4; a retainer ring 5 and an elastic lining 6 are respectively sleeved between the inner end part of the locking screw sleeve 4 and the peripheral side surface of the fine adjustment screw rod 1; steel balls 7 are arranged between the retainer ring 5 and the elastic bushing 6 in an annular array manner; an annular retainer 8 matched with the steel ball 7 is fixedly inserted into the inner wall of one end of the locking screw sleeve 4.
The annular array on the inner wall of the annular retainer 8 is provided with spherical grooves with the sizes equivalent to those of the steel balls 7, in short, the locking screw sleeve 4 is rotated to push the steel balls 7 to rotate, and the spherical grooves of the annular retainer 8 are mutually attached to the steel balls 7 to limit the steel balls 7.
Wherein, the elastic bush 6 adopts a thin-wall structure design; the elastic bushing 6 is made of spring steel materials, in short, when the steel balls 7 are under pressure, the thin-wall elastic bushing 6 deforms inwards and symmetrically holds the fine adjustment screw rod 1, and accordingly damping friction force is formed.
The fine adjustment screw rod 3 is far away from one end part of the bearing 2 and is fixed with a fine adjustment knob 9 through a bolt positioned outside the shell 1, in short, the fine adjustment knob 9 is rotated clockwise, the fine adjustment screw rod 3 is driven by the fine adjustment knob 9 to adjust the measuring instrument in a rotating mode, the locking screw sleeve 4 is rotated to push the steel balls 7 and the retainer ring 5 to form centripetal resultant force, the elastic bushing 6 is extruded to generate elastic deformation, the fine adjustment screw rod 3 is held symmetrically, and the measuring instrument is locked; the fine adjustment knob 9 is rotated anticlockwise, the locking screw sleeve 4 moves in the opposite direction, centripetal resultant force formed by the steel balls 7 and the retainer ring 5 is gradually reduced, elastic deformation of the elastic bushing 6 is recovered, and the force holding the fine adjustment screw rod 1 is released, so that the measuring instrument is locked and prevented from loosening.
Wherein, the cover is equipped with dustproof end ring 10 between locking swivel nut 4 inner wall and the fine setting lead screw 3 periphery side, in short, under the effect of dustproof end ring 10, seals retaining ring 5, elastic bush 6, steel ball 7, annular holder 8 inside locking swivel nut 4.
Wherein, the inner wall of the locking screw sleeve 4 is in a conical surface structure; the inner conical surface of the locking screw sleeve 4 and the end surface of the retainer ring 5 form a centripetal force through the steel balls 7, in short, the steel balls 7 form the centripetal force under the action of the locking screw sleeve 4 and the retainer ring 5, so that the elastic bushing 6 can be deformed, and friction force is generated on the fine adjustment screw rod 3 to form rotary damping.
Wherein, the shell 1 is a cylindrical structure; a connecting flange 11 is provided on a circumferential side surface of one end of the case 1, and in short, the case 1 protects internal components and is connected to the measuring instrument via the connecting flange 11.
One specific application of this embodiment is: under the action of a dustproof end ring 10, a check ring 5, an elastic bushing 6, steel balls 7 and an annular retainer 8 in a locking threaded sleeve 4 are sealed, a fine adjustment knob 9 is rotated clockwise, the fine adjustment knob 9 drives a fine adjustment screw rod 3 to rotate and adjust the measuring instrument, the plurality of steel balls 7 and the check ring 5 are pushed to form centripetal resultant force when the locking threaded sleeve 4 is rotated, the elastic bushing 6 can be deformed, friction force is generated on the fine adjustment screw rod 3, when the steel balls 7 are under pressure, the thin-wall elastic bushing 6 deforms inwards and symmetrically embraces the fine adjustment screw rod 1, damping friction force is formed, and the elastic bushing 6 is extruded to generate elastic deformation and symmetrically embraces the fine adjustment screw rod 3 to lock the measuring instrument; the fine setting knob 9 of counter-clockwise turning, locking swivel nut 4 is to the opposite direction motion, and centripetal resultant force reduces, and elastic bushing 6 elastic deformation resumes, embraces the power release of fine setting lead screw 1 for measuring instrument locking is locking, and locking swivel nut 4 sets up in fine setting knob 9 outer lane, and the staggered floor distributes, and a gesture of two actions can be accomplished, has convenient to use, the damping is adjustable, locking is accurate, locking free characteristics, can improve work efficiency, guarantees measuring operation precision.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a fine setting locking mechanism for precision measurement, includes casing (1), its characterized in that:
a bearing (2) is fixedly inserted into one end of the shell (1); a fine adjustment screw rod (3) is fixedly inserted in the center of the bearing (2); the inner wall of the shell (1) is in threaded connection with a locking threaded sleeve (4);
a check ring (5) and an elastic bushing (6) are respectively sleeved between the inner end of the locking screw sleeve (4) and the peripheral side surface of the fine adjustment screw rod (1); steel balls (7) are arranged between the retainer ring (5) and the elastic bushing (6) in an annular array;
and an annular retainer (8) matched with the steel ball (7) is fixedly inserted into the inner wall of one end of the locking screw sleeve (4).
2. A vernier locking mechanism for precision measurements as claimed in claim 1, characterized in that the annular array of the inner wall of the annular holder (8) is provided with spherical grooves of a size corresponding to the size of the steel balls (7).
3. A fine-tuning locking mechanism for precision measurements according to claim 1, characterized in that the elastic bushing (6) is of thin-walled design; the elastic bushing (6) is made of spring steel materials.
4. A fine adjustment locking mechanism for precision measurement according to claim 1, characterized in that the fine adjustment screw rod (3) is far from one end of the bearing (2) and is fixed with a fine adjustment knob (9) by a bolt positioned outside the housing (1).
5. The fine-tuning locking mechanism for precision measurement according to claim 1, characterized in that a dustproof end ring (10) is sleeved between the inner wall of the locking screw sleeve (4) and the outer peripheral side surface of the fine-tuning screw rod (3).
6. A fine-tuning locking mechanism for precision measurement according to claim 1, characterized in that the inner wall of the locking screw sleeve (4) is of a conical surface structure.
7. A fine-adjustment locking mechanism for precision measurement according to claim 1, characterized in that the inner conical surface of the locking screw sleeve (4) and the end surface of the retainer ring (5) form a centripetal force through the steel balls (7).
8. A fine-tuning locking mechanism for precision measurement according to claim 1, characterized in that the housing (1) is a cylindrical structure; and a connecting flange (11) is arranged on the peripheral side surface of one end of the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111269873.9A CN114166261A (en) | 2021-10-29 | 2021-10-29 | Fine adjustment locking mechanism for precision measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111269873.9A CN114166261A (en) | 2021-10-29 | 2021-10-29 | Fine adjustment locking mechanism for precision measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114166261A true CN114166261A (en) | 2022-03-11 |
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ID=80477696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111269873.9A Pending CN114166261A (en) | 2021-10-29 | 2021-10-29 | Fine adjustment locking mechanism for precision measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114166261A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3762227A (en) * | 1971-10-12 | 1973-10-02 | Gen Motors Corp | Damped and cushioned stop |
| CN101216088A (en) * | 2008-01-18 | 2008-07-09 | 北京工业大学 | Barrel-type friction-changing damper |
| JP4283335B1 (en) * | 2008-10-31 | 2009-06-24 | 兼工業株式会社 | Pipe fitting |
| CN203459930U (en) * | 2013-09-06 | 2014-03-05 | 北京航星机器制造有限公司 | Clamping tool capable of automatically and precisely centering through fine adjustment |
| CN103931574A (en) * | 2014-05-15 | 2014-07-23 | 四川工程职业技术学院 | Replaceable fishing pole handle |
| CN104483110A (en) * | 2014-11-19 | 2015-04-01 | 哈尔滨电气动力装备有限公司 | High-accuracy fine adjusting positioning device |
| CN107702614A (en) * | 2017-10-13 | 2018-02-16 | 威海职业学院 | A kind of micrometer |
-
2021
- 2021-10-29 CN CN202111269873.9A patent/CN114166261A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3762227A (en) * | 1971-10-12 | 1973-10-02 | Gen Motors Corp | Damped and cushioned stop |
| CN101216088A (en) * | 2008-01-18 | 2008-07-09 | 北京工业大学 | Barrel-type friction-changing damper |
| JP4283335B1 (en) * | 2008-10-31 | 2009-06-24 | 兼工業株式会社 | Pipe fitting |
| CN203459930U (en) * | 2013-09-06 | 2014-03-05 | 北京航星机器制造有限公司 | Clamping tool capable of automatically and precisely centering through fine adjustment |
| CN103931574A (en) * | 2014-05-15 | 2014-07-23 | 四川工程职业技术学院 | Replaceable fishing pole handle |
| CN104483110A (en) * | 2014-11-19 | 2015-04-01 | 哈尔滨电气动力装备有限公司 | High-accuracy fine adjusting positioning device |
| CN107702614A (en) * | 2017-10-13 | 2018-02-16 | 威海职业学院 | A kind of micrometer |
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Application publication date: 20220311 |
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| RJ01 | Rejection of invention patent application after publication |