CN110238773B - High-precision self-centering external-holding type tensioning and positioning mechanism - Google Patents
High-precision self-centering external-holding type tensioning and positioning mechanism Download PDFInfo
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- CN110238773B CN110238773B CN201910499644.2A CN201910499644A CN110238773B CN 110238773 B CN110238773 B CN 110238773B CN 201910499644 A CN201910499644 A CN 201910499644A CN 110238773 B CN110238773 B CN 110238773B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 238000003825 pressing Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 8
- 238000007689 inspection Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 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
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention belongs to the technical field of clamping jigs, and relates to a high-precision self-centering external-holding type tensioning device. The mechanism can be quickly installed and positioned, achieves an integrated effect, is compact and attractive in structure, low in cost, capable of being self-released and self-centering, and meanwhile, can realize flexible or long-distance locking operation, can optimize a test space and can realize humanized design and arrangement of locking operation actions.
Description
Technical Field
The invention relates to the technical field of clamping jigs, in particular to a high-precision self-centering external-holding type tensioning and positioning mechanism.
Background
With the continuous development of the domestic automobile industry, industry competition is increasingly strong, users have higher and higher requirements on the quality of automobiles, and in order to keep the product competitiveness, the whole automobile factories continuously accelerate the steps of updating the automobile types and pushing new automobile types, and meanwhile, each automobile manufacturer also continuously adopts new technology and new technology, and attention is turned to the development of measurement technology. The development of the manufacturing technology is not separated from the measurement technology, and the manufacturing technology and the measurement technology complement each other and promote each other. New measurement techniques continue to reveal the shortcomings of new processes, making them further innovations and adaptations more sophisticated. The inspection tool and the clamp are taken as basic components of the measuring technology, the functions of the inspection tool and the clamp are more and more obvious in the production place, the traditional special inspection tool and clamp for a single vehicle type cannot meet the requirements gradually, and a vehicle factory puts forward higher requirements on the economical efficiency and the quick response capability of products of inspection tools and clamp suppliers, so that the multifunctional, flexible and high-efficiency inspection tool and clamp are met, and the satisfaction degree of customers is directly determined with low cost.
The existing positioning and clamping structure of the gauge and the clamp basically adopts the clamping of a market standard clamp and the clamping of a conical expansion sleeve as a clamping mechanism, the clamping and positioning functions of a main positioning point are realized through compression and conical expansion tightening, and an auxiliary positioning point does not have a release function.
The prior art scheme has the following defects:
1. the standard clamp and the conical expansion sleeve clamp are used as clamping mechanisms, the mechanism has a clamping function only, and the mechanism can be used as accessories of other parts.
2. Failure to achieve high precision modular standard design
3. Failure to realize flexible change and quick switching disassembly and assembly
4. The standardized stock can not be realized, and the processing and goods supplying time is reduced
5. Self-centering positioning design cannot be realized.
6. The pull-down positioning function after clamping cannot be realized.
There is therefore a need to develop a mechanism to solve the above problems.
Disclosure of Invention
The invention mainly aims to provide a high-precision self-centering external-holding type tensioning and positioning mechanism which can be self-centered and can realize flexible or long-distance locking operation.
The invention realizes the aim through the following technical scheme: the high-precision self-centering external-holding type tensioning and positioning mechanism comprises an axially hollow shell component, a compressing component capable of axially stretching in the shell component and a tensioning component capable of axially stretching in the compressing component, wherein the tensioning component comprises a self-centering sleeve internally provided with an elastic clamping core, a guy cable connected with the elastic clamping core and penetrating out from the upper part of the self-centering sleeve and an inner spring used for enabling the self-centering sleeve to return to the rear part; the compressing assembly comprises an axially hollow moving core seat, a moving bolt fixed on the outer side of the moving core seat and an outer spring for enabling the moving core seat to return forwards; the shell assembly comprises a cylindrical body provided with a motion track groove and a cover plate positioned at the upper part of the body and used for a guy cable to pass through, the motion track groove comprises a long hole area, an arc area and a short hole area which are connected in a U-shaped manner, and the motion bolt passes through the motion track groove; when the movable bolt is positioned in the long hole area, the pressing component is retracted into the shell component, and when the movable bolt is positioned in the long hole area, the pressing component protrudes out of the shell component; the aligning sleeve is in conical fit with the elastic sandwich.
Specifically, be equipped with interior protruding portion on the upper portion inner wall of body, be equipped with on the upper portion outer wall of motion core seat and agree with the outer protruding portion of interior protruding portion, the rear portion of body is equipped with a spring baffle that has the trompil, outer spring one end supports and holds spring baffle, and the other end supports and holds outer protruding portion.
Specifically, the upper end opening part of the aligning sleeve is provided with a sandwich baffle, one end of the inner spring is propped against the sandwich baffle, and the other end of the inner spring is propped against the inner cavity of the moving core seat.
Specifically, the movement core seat is provided with an outer ventilation hole, and the aligning sleeve is provided with an inner ventilation hole.
By adopting the technical scheme, the invention has the beneficial effects that:
The mechanism can be quickly installed and positioned, achieves an integrated effect, is compact and attractive in structure, low in cost, capable of being self-released and self-centering, and meanwhile, can realize flexible or long-distance locking operation, can optimize a test space and can realize humanized design and arrangement of locking operation actions.
Drawings
FIG. 1 is a full cross-sectional view of a high precision self-centering, outboard tensioning and positioning mechanism;
FIG. 2 is a perspective view of a high precision self-centering, outward-embracing tensioning and positioning mechanism;
FIG. 3 is a perspective view of the body;
FIG. 4 is a perspective view of the hold down assembly;
Fig. 5 is a perspective view of the tightening assembly.
The figures represent the numbers:
1-a shell component, 11-a body, 111-a movement track groove, 112-an inner protruding part, 12-a spring baffle plate and 13-a cover plate;
The device comprises a 2-pressing component, a 21-moving core seat, a 211-outer protruding part, a 212-outer ventilation hole, a 22-moving bolt, a 23-positioning pressing plate and a 24-outer spring;
3-tensioning components, 31-aligning sleeves, 311-inner ventilation holes, 32-elastic sandwich, 33-sandwich baffles, 34-inhaul cables and 35-inner springs.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Examples
As shown in fig. 1 to 5, the invention is a high-precision self-centering external holding type tensioning positioning mechanism, which comprises an axially hollow shell component 1, an axially telescopic compressing component 2 in the shell component 1 and a tensioning component 3 axially telescopic in the compressing component 2, wherein the tensioning component 3 comprises a aligning sleeve 31 internally provided with an elastic clamping core 32, a pull rope 34 connected with the elastic clamping core 32 and penetrating out from the upper part of the aligning sleeve 31, and an inner spring 35 for returning the aligning sleeve 31 to the lower part; the compressing assembly 2 comprises an axially hollow moving core seat 21, a moving plug 22 fixed on the outer side of the moving core seat 21 and an outer spring 24 for returning the moving core seat 21 upwards; the shell assembly 1 comprises a cylindrical body 11 provided with a motion track groove 111 and a cover plate 13 positioned at the upper part of the body 11 and used for the guy rope 34 to penetrate out, the motion track groove 111 comprises a long hole area, an arc area and a short hole area which are connected in a U-shaped way, and the motion bolt 22 penetrates through the motion track groove 111. When the moving latch 22 is positioned in the long hole region, the pressing assembly 2 is retracted into the housing assembly 1, and when the moving latch 22 is positioned in the short Kong Oushi, the pressing assembly 2 protrudes from the lower portion from the housing assembly 1. When the step plane positioning is carried out, the movable bolt 22 is pushed downwards to the bottom of the movement track groove 111 on the body 11 and then rotated for 90 degrees, so that the pressing component 2 and the tensioning component 3 are driven to move downwards together, the outer spring 24 is subjected to compression limiting effect, and the movable bolt can be quickly and automatically retracted when the test workpiece is detached. The elastic sandwich 32 is made of special elastic material, three cutting grooves (120 degrees apart) are machined in the conical matching part, the bottom of the elastic sandwich 32 is divided into three elastic legs, and the wall thickness of the groove bottom is 1mm. When aligning and tensioning work is carried out, the aligning sleeve 31 and the moving core seat 21 are in clearance fit with a unilateral clearance of 0.25mm, when the inhaul cable 34 is pulled, the elastic clamping core 32 overcomes the trend that the elastic force of the inner spring 35 tends to shrink inwards towards the aligning sleeve 31, the lower end of the elastic clamping core 32 can be deformed inwards under the action of the aligning sleeve 31, the cylindrical part penetrating into the elastic clamping core 32 can be clamped, the aligning sleeve 31 is in conical fit with the elastic clamping core 32, the elastic clamping core 32 can be automatically concentric with the cylindrical part, and when the elastic clamping core 32 is released, the inner spring 35 can keep the clamping state of the aligning sleeve 31 and the elastic clamping core 32, so that a workpiece cannot be separated until the inhaul cable 34 is pulled again. The mechanism can be quickly installed and positioned, achieves an integrated effect, is compact and attractive in structure, low in cost, capable of being self-released and self-centering, and meanwhile, can realize flexible or long-distance locking operation, can optimize a test space and can realize humanized design and arrangement of locking operation actions.
As shown in fig. 3 and 4, an inner protrusion 112 is provided on an upper inner wall of the body 11, an outer protrusion 211 engaging with the inner protrusion 112 is provided on an upper outer wall of the moving core holder 21, a spring damper 12 having an opening is provided at a rear portion of the body 11, and one end of the outer spring 24 abuts against the spring damper 12, and the other end abuts against the outer protrusion 211. The body 11 and the moving core seat 21 adopt a clearance fit design of large and small concentric circles and cross (90 degrees), so that accurate guiding and positioning can be realized.
As shown in fig. 1 and 5, a core damper 33 is disposed at an opening at an upper end of the aligning sleeve 31, one end of an inner spring 35 abuts against the core damper 33, and the other end abuts against the inner cavity of the moving core seat 21. The core damper 33 abuts against the upper end of the elastic core 32 on one side and against the inner spring 35 on the other side.
As shown in fig. 1,4 and 5, the moving core holder 21 is provided with an outer vent hole 212, and the aligning sleeve 31 is provided with an inner vent hole 311. The outer ventilation holes 212 and the inner ventilation holes 311 can ventilate the inside of the compression assembly 2, so as to avoid unsmooth actions caused by internal air trapping.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (4)
1. The utility model provides a taut positioning mechanism of high accuracy self-centering outer embracing type which characterized in that: the self-aligning device comprises an axially hollow shell component, an axially telescopic compressing component and a tensioning component, wherein the axially telescopic compressing component can be arranged in the shell component, the tensioning component can be axially telescopic in the compressing component, and the tensioning component comprises an aligning sleeve internally provided with an elastic clamping core, a guy cable connected with the elastic clamping core and penetrating out from the upper part of the aligning sleeve, and an inner spring used for enabling the aligning sleeve to return to the rear part; the compressing assembly comprises an axially hollow moving core seat, a moving bolt fixed on the outer side of the moving core seat and an outer spring for enabling the moving core seat to return forwards; the shell assembly comprises a cylindrical body provided with a motion track groove and a cover plate positioned at the upper part of the body and used for a guy cable to pass through, the motion track groove comprises a long hole area, an arc area and a short hole area which are connected in a U-shaped manner, and the motion bolt passes through the motion track groove; when the movable bolt is positioned in the long hole area, the pressing component is retracted into the shell component, and when the movable bolt is positioned in the long hole area, the pressing component protrudes out of the shell component; the aligning sleeve is in conical fit with the elastic sandwich.
2. The high precision self-centering external holding type tensioning positioning mechanism according to claim 1, wherein: an inner protruding part is arranged on the inner wall of the upper part of the body, an outer protruding part which is matched with the inner protruding part is arranged on the outer wall of the upper part of the moving core seat, a spring baffle with an opening is arranged at the rear part of the body, one end of the outer spring abuts against the spring baffle, and the other end of the outer spring abuts against the outer protruding part.
3. The high precision self-centering external holding type tensioning positioning mechanism according to claim 1, wherein: the upper end opening part of the aligning sleeve is provided with a sandwich baffle, one end of the inner spring is propped against the sandwich baffle, and the other end is propped against the inner cavity of the moving core seat.
4. The high precision self-centering external holding type tensioning positioning mechanism according to claim 1, wherein: the movement core seat is provided with an outer ventilation hole, and the aligning sleeve is provided with an inner ventilation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910499644.2A CN110238773B (en) | 2019-06-11 | 2019-06-11 | High-precision self-centering external-holding type tensioning and positioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910499644.2A CN110238773B (en) | 2019-06-11 | 2019-06-11 | High-precision self-centering external-holding type tensioning and positioning mechanism |
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| Publication Number | Publication Date |
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| CN110238773A CN110238773A (en) | 2019-09-17 |
| CN110238773B true CN110238773B (en) | 2024-05-14 |
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| CN201910499644.2A Active CN110238773B (en) | 2019-06-11 | 2019-06-11 | High-precision self-centering external-holding type tensioning and positioning mechanism |
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| CN110238773A (en) | 2019-09-17 |
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