CN109807773A - A kind of long-shaft type inner cavity positioning device - Google Patents
A kind of long-shaft type inner cavity positioning device Download PDFInfo
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- CN109807773A CN109807773A CN201910127504.2A CN201910127504A CN109807773A CN 109807773 A CN109807773 A CN 109807773A CN 201910127504 A CN201910127504 A CN 201910127504A CN 109807773 A CN109807773 A CN 109807773A
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- wedge block
- positioning device
- swollen valve
- inner cavity
- guide rod
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Abstract
The invention discloses a kind of long-shaft type inner cavity positioning device, handwheel, stationary wedge block, swollen valve expander, connection wedge block, compressed spring, sliding wedge block and locknut are successively installed on guide rod；Swollen valve expander is separately fixed between two neighboring wedge block by wedge-shaped circular conical surface, and swollen valve expander is made to generate pretightning force, compressed spring is provided in swollen valve expander, compressed spring is fixed between adjacent two wedge block, the head and the tail both ends of guide rod, which pass through to be threadedly engaged respectively, is equipped with handwheel and locknut, rotation hand wheel makes it generate axial movement on guide rod, to compress stationary wedge block with connect wedge block, connection wedge block and sliding the distance between wedge block, and then squeeze swollen valve expander and make its generation radial direction deformation；Invention increases the axial distances between positioning body, effectively increase the alignment of positioning device and cavity, reduce fit clearance, improve cooperation precision, increase the stability of positioning device.
Description
Technical field
The invention belongs to precision machinery fields, and in particular to a kind of double swollen valve intracoelomic cavity positioning devices of long-shaft type.
Background technique
When inner cavity positions, such as school gun device, inner hole morpheme measuring device and lathe cutter head clamping device etc., often
It needs that positioning device and inner cavity is made to keep the concentricity of height, guarantees the precision of measurement and processing.And it requires in external complex
When in environment using vibration, impact and temperature change is generated, positioning device all will not generate relative displacement with cavity, can protect always
Hold stable state.
Common inner cavity positioning method is positioned using three-jaw or chuck formula and inner cavity, and this positioning method is in the application
It has the following deficiencies:
It (1) is point contact or face contact between claw and cavity in existing claw positioning method, contact area is small, and cooperation is not
It is enough close；
(2) axial distance is short, and concentricity is poor；According to inclination angleWith axially engage distanceAnd fit clearanceRelationship are as follows:
In fit clearanceIn the case where certain, inclination angleWith cooperation distanceIt is inversely proportional, appropriate increase axially engages distance
Inclination angle can be reduced, axial distance is often shorter in claw positioning, be easy to cause cooperation inclination angle big；
(3) stability is poor, and anti-interference ability is weak.Existing claw positioning device does not have self-locking function, and due to cooperating bearing
It is point or face contact, is also easy to be affected by the external environment and generate displacement.
Summary of the invention
The present invention provides a kind of double swollen valve intracoelomic cavity positioning devices of long-shaft type, to solve present in existing inner cavity positioning device
The low stability of precision it is poor the problems such as.
The technical solution adopted by the present invention to solve the technical problems is: a kind of long-shaft type inner cavity positioning device, including leads
Bar and the stationary wedge block being sequentially arranged on guide rod by hole axle cooperation, connection wedge block and sliding wedge block, connect wedge
Shape block is located between stationary wedge block and sliding wedge block, and three wedge blocks can be on guide rod axially movable, the fixation
Wedge block and connection wedge block between and connection wedge block and sliding wedge block be respectively arranged with a swollen valve expander, it is described
Swollen valve expander by the wedge-shaped circular conical surface at both ends be separately fixed at stationary wedge block and connection wedge block between, and connection
Between wedge block and sliding wedge block, and swollen valve expander is made to generate pretightning force, is provided with compressed spring in swollen valve expander,
Compressed spring is fixed between adjacent two wedge block, and the head and the tail both ends of guide rod, which pass through to be threadedly engaged respectively, is equipped with handwheel and tightening
Nut, rotation hand wheel make it generate axial movement on guide rod, thus compress stationary wedge block with connect wedge block, connection wedge shape
The distance between block and sliding wedge block, and then squeezing swollen valve expander makes it generate radial deformation.
A kind of long-shaft type inner cavity positioning device, the wedge-shaped circular conical surface cone angle of swollen valve expander are 20 °.
A kind of long-shaft type inner cavity positioning device, it is more than that swollen valve expands that swollen valve expander side wall, which is axially provided with height,
Multiple type grooves of body length 3/4, type groove bottom end is equipped with outer diameter and is greater than 2 times of groove width of circular hole, on the circular hole in two neighboring type groove
On the contrary, the part between two neighboring type groove constitutes an expanding petal, multiple expanding petals form the circle with lumen therethrough in lower direction
Tubular construction.
A kind of long-shaft type inner cavity positioning device, stationary wedge block cooperate peace by the hole axle that section is 3/4 circle
On guide rod, guarantee that stationary wedge block slides axially only with respect to guide rod generation, limitation relatively rotates.
A kind of long-shaft type inner cavity positioning device, stationary wedge block, connection wedge block and sliding wedge block end face
It is provided with groove, the compressed spring is separately fixed between stationary wedge block and connection wedge block by groove, and
It connects between wedge block and sliding wedge block, and remains compression pretightning force.
A kind of long-shaft type inner cavity positioning device, the mating surface between swollen valve expander and wedge block, wedge block
Mating surface between guide rod smears lubricating grease.
A kind of long-shaft type inner cavity positioning device, guide rod cylindricity are 0.02.
The material of a kind of long-shaft type inner cavity positioning device, swollen valve expander uses carbon spring steel, and adopts
Use elastic process.
A kind of long-shaft type inner cavity positioning device, connection wedge block use the aluminium by surface hard processing
Part, the cylindricity of cylindrical portion are 0.02.
The beneficial effect comprise that: the present invention spatially uses long axis guide rod to be laid out, and increases between positioning body
Axial distance effectively increases the alignment of positioning device and cavity；Using the flexible deformation of the cylindrical swollen valve expander of rigidity
It is positioned with the holding of inner cavity to realize, on the one hand makes mating surface even closer, reduce fit clearance, improve cooperation precision；Separately
On the one hand since lozenges inclination angle is less than equivalent friction angle between expander and sphenoid, and handwheel screw thread also have it is self-locking
Function effectively increases the stability of positioning device.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is cross-sectional view of the invention；
Fig. 3 is the schematic diagram of guide rod of the present invention；
Fig. 4 is the schematic diagram of handwheel of the present invention；
Fig. 5 is the schematic diagram of stationary wedge block of the present invention；
Fig. 6 is the swollen valve expander schematic diagram of the present invention；
Fig. 7 is the schematic diagram of present invention connection wedge block；
Fig. 8 is the schematic diagram of compressed spring of the present invention；
Fig. 9 is the schematic diagram of present invention sliding wedge block；
Figure 10 is the schematic diagram of locknut of the present invention.
Each appended drawing reference are as follows: 1-guide rod, 2-handwheels, 3-stationary wedge blocks, 4-swollen valve expanders, 5-connection wedge shapes
Block, 6-compressed springs, 7-sliding wedge blocks, 8-locknuts.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
The specific embodiment of the invention is successively installed handwheel 2 as shown in Fig. 1-Fig. 2, Fig. 4, Fig. 8-Figure 10, on guide rod 1, is consolidated
Determine wedge block 3, swollen valve expander 4, connection wedge block 5, compressed spring 6, sliding wedge block 7 and locknut 8；Lead on guide rod 1
It crosses hole axle cooperation and stationary wedge block 3, connection wedge block 5, sliding wedge block 7 is successively installed, and can be on guide rod 1 along axial fortune
Dynamic, a pair of swollen valve expander 4 passes through wedge-shaped circular conical surface, is separately fixed between two neighboring wedge block, and compressed spring 6 is set to swollen
It in valve expander 4, is fixed between two neighboring wedge block, locknut 8 is mounted on 1 end of guide rod, hand by being threadedly engaged
Wheel 2 is mounted on 1 head end of guide rod by being threadedly engaged.Rotation hand wheel 2 makes it generate axial movement on guide rod 1, so that compression is solid
Determine wedge block 3 with connect wedge block 5, connection wedge block 5 and sliding the distance between wedge block 7, and then squeeze swollen valve expander 4
It is set to generate radial deformation；The swollen valve expander 4 is separately fixed at fixation by the wedge-shaped circular conical surface that both ends angle is 20 °
Between wedge block 3 and connection wedge block 5, and between connection wedge block 5 and sliding wedge block 7, and produce swollen valve expander 4
Raw pretightning force.
Stationary wedge block 3, connection wedge block 5 and sliding 7 end face of wedge block is provided with groove, the compression
Spring 6 is separately fixed between stationary wedge block 3 and connection wedge block 5 by groove, and connection wedge block 5 and sliding wedge shape
Between block 7, and remain compression pretightning force, the mating surface between the swollen valve expander 4 and wedge block, wedge block with lead
Mating surface between bar 1 smears lubricating grease.
Fig. 3 show the structural schematic diagram of guide rod 1 of the present invention, handles, has using aluminium product and by surface hard
Good wearability, 1 cylindricity of guide rod require to be 0.02.
Fig. 5 show the structural schematic diagram of stationary wedge block 3 of the present invention, is coupled by the hole axle that section is 3/4 circle
On guide rod 1, guarantee that stationary wedge block 3 slides axially only with respect to the generation of guide rod 1, limitation relatively rotates.
Fig. 6 show the structural schematic diagram of the swollen valve expander 4 of the present invention, and it is more than swollen valve expander that side wall, which is axially provided with height,
Multiple type grooves of 4 length 3/4, type groove bottom end is equipped with outer diameter and is greater than 2 times of groove width of circular hole, above and below the circular hole in two neighboring type groove
Contrary, the part between two neighboring type groove constitutes an expanding petal, and multiple expanding petals form the cylinder with lumen therethrough
Shape structure, material use carbon spring steel, and by elastic heat treatment process, have good ductility.
Fig. 7 show the structural schematic diagram of present invention connection wedge block 5, using aluminium product and by surface hard
Reason has good wearability.Cylindrical portion cylindricity requires to be 0.02, and both ends circular conical surface symmetry and end face run-out have
It is strict with.
The present invention spatially uses long axis guide rod 1 to be laid out, and increases the axial distance between positioning body, effectively increases positioning
The alignment of device and cavity；It is positioned using the flexible deformation of the cylindrical swollen valve expander 4 of rigidity and the holding of inner cavity to realize,
On the one hand keep mating surface even closer, reduce fit clearance, improve cooperation precision；On the other hand since lozenges inclination angle is less than
Equivalent friction angle between expander and sphenoid, and 2 screw thread of handwheel also has self-locking function, effectively increases positioning device
Stability.
The present invention is not limited to above-mentioned preferred forms, and anyone skilled in the art all may be used under the inspiration of the present invention
To obtain other deformations and improved products, however, do any variation in its shape or structure, all have and the application
Identical or similar technical solution, is within the scope of the present invention.
Claims (9)
1. a kind of long-shaft type inner cavity positioning device, it is characterised in that: be sequentially arranged at including guide rod (1) and by hole axle cooperation
Stationary wedge block (3), connection wedge block (5) and sliding wedge block (7), the stationary wedge block (3) and company on guide rod (1)
It connects between wedge block (5) and connects wedge block (5) and sliding wedge block (7) is respectively arranged with a swollen valve expander (4), institute
The swollen valve expander (4) stated by both ends angle be 20 ° of wedge-shaped circular conical surface be separately fixed at stationary wedge block (3) with connect wedge
Between shape block (5), and between connection wedge block (5) and sliding wedge block (7), and pretightning force is generated, in swollen valve expander (4)
It is provided with compressed spring (6), the head and the tail both ends of guide rod (1) pass through screw thread respectively and are equipped with handwheel (2) and locknut (8).
2. a kind of long-shaft type inner cavity positioning device according to claim 1, which is characterized in that the swollen valve expander (4)
Wedge-shaped circular conical surface cone angle be 20 °.
3. a kind of long-shaft type inner cavity positioning device according to claim 2, which is characterized in that the swollen valve expander
(4) side wall is axially provided with multiple type grooves that height is more than swollen valve expander (4) length 3/4, and type groove bottom end is equipped with outer diameter and is greater than slot
Wide 2 times of circular hole, circular hole up and down direction in two neighboring type groove on the contrary, the part between two neighboring type groove constitute one it is swollen
Swollen valve, multiple expanding petals, which are formed, has the columnar structured of lumen therethrough.
4. a kind of long-shaft type inner cavity positioning device according to claim 1, which is characterized in that the stationary wedge block
(3) it is fitted on guide rod (1) by the hole axle that section is 3/4 circle, guarantees stationary wedge block (3) only with respect to guide rod (1)
Generation slides axially, and limitation relatively rotates.
5. a kind of long-shaft type inner cavity positioning device according to claim 1, which is characterized in that the stationary wedge block
(3), wedge block (5) are connected and sliding wedge block (7) end face is provided with groove, the compressed spring (6) passes through groove point
Be not fixed on stationary wedge block (3) with connect between wedge block (5), and connection wedge block (5) and sliding wedge block (7) it
Between.
6. a kind of long-shaft type inner cavity positioning device described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that described
Mating surface between swollen valve expander (4) and wedge block, the mating surface between wedge block and guide rod (1) smear lubricating grease.
7. a kind of long-shaft type inner cavity positioning device according to claim 1, which is characterized in that described guide rod (1) cylinder
Degree is 0.02.
8. a kind of long-shaft type inner cavity positioning device according to claim 1, which is characterized in that the swollen valve expander
(4) carbon spring steel is used using through Overheating Treatment.
9. a kind of long-shaft type inner cavity positioning device according to claim 1, which is characterized in that the connection wedge block
(5) using the aluminium part by surface hard processing, the cylindricity of cylindrical portion is 0.02.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910127504.2A CN109807773A (en) | 2019-02-20 | 2019-02-20 | A kind of long-shaft type inner cavity positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910127504.2A CN109807773A (en) | 2019-02-20 | 2019-02-20 | A kind of long-shaft type inner cavity positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109807773A true CN109807773A (en) | 2019-05-28 |
Family
ID=66607033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910127504.2A Pending CN109807773A (en) | 2019-02-20 | 2019-02-20 | A kind of long-shaft type inner cavity positioning device |
Country Status (1)
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| CN (1) | CN109807773A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989634A (en) * | 2023-09-27 | 2023-11-03 | 万向钱潮股份公司 | Positioning tool for detecting journal position and application method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07132403A (en) * | 1993-02-08 | 1995-05-23 | Xu Xian Hua | Mandrel with internal spline for processing workpiece |
| CN102069207A (en) * | 2011-01-09 | 2011-05-25 | 无锡银联机械有限公司 | Device capable of elastically clamping two ends of long hole |
| CN202336600U (en) * | 2011-10-12 | 2012-07-18 | 河南森茂机械有限公司 | Expansion clamp head |
| CN202824717U (en) * | 2012-10-25 | 2013-03-27 | 中国北车集团大同电力机车有限责任公司 | Clamp for hollow shaft part |
| CN206652987U (en) * | 2017-03-20 | 2017-11-21 | 河南中原吉凯恩气缸套有限公司 | Cylinder jacket bipyramid ringfeder magic chuck |
-
2019
- 2019-02-20 CN CN201910127504.2A patent/CN109807773A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07132403A (en) * | 1993-02-08 | 1995-05-23 | Xu Xian Hua | Mandrel with internal spline for processing workpiece |
| CN102069207A (en) * | 2011-01-09 | 2011-05-25 | 无锡银联机械有限公司 | Device capable of elastically clamping two ends of long hole |
| CN202336600U (en) * | 2011-10-12 | 2012-07-18 | 河南森茂机械有限公司 | Expansion clamp head |
| CN202824717U (en) * | 2012-10-25 | 2013-03-27 | 中国北车集团大同电力机车有限责任公司 | Clamp for hollow shaft part |
| CN206652987U (en) * | 2017-03-20 | 2017-11-21 | 河南中原吉凯恩气缸套有限公司 | Cylinder jacket bipyramid ringfeder magic chuck |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989634A (en) * | 2023-09-27 | 2023-11-03 | 万向钱潮股份公司 | Positioning tool for detecting journal position and application method thereof |
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Application publication date: 20190528 |
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| RJ01 | Rejection of invention patent application after publication |