CN116007549A - Thin-wall rotating member center hole positioning device - Google Patents
Thin-wall rotating member center hole positioning device Download PDFInfo
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- CN116007549A CN116007549A CN202211731179.9A CN202211731179A CN116007549A CN 116007549 A CN116007549 A CN 116007549A CN 202211731179 A CN202211731179 A CN 202211731179A CN 116007549 A CN116007549 A CN 116007549A
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Abstract
The invention discloses a positioning device for a central hole of a thin-wall rotary member, which comprises a connecting column, a main positioning column, a plurality of auxiliary positioning columns and a movable ejector rod, wherein the main positioning column is arranged at the central position of the upper end of the connecting column; the lower end of the connecting column is connected with the rotary mechanism to realize uniform rotation of the thin-wall rotary member; and a spring is placed in the main positioning column, one end of the spring is contacted with the main positioning column, and the other end of the spring is contacted with the movable top plate, so that radial tensioning and positioning of the thin-wall rotary member are realized. The invention can meet the measurement and positioning requirements of the thin-wall rotary member with strong rigidity at the central part and positioning holes, is convenient to assemble and disassemble, and is easy to take and place workpieces.
Description
Technical Field
The invention relates to the technical field of precise mechanical design, in particular to a positioning device for a center hole of a thin-wall rotary part.
Background
The thin-wall rotary workpiece is in a weak rigid structure as a whole, and geometric quantities such as diameter, roundness and the like are usually detected by adopting a non-contact measurement means. Because parameters such as diameter, roundness and the like need to rotate for a circle to carry out whole circle sampling points, the measuring and positioning mechanism needs to be connected with the rotating mechanism and realize stable positioning of the workpiece. The positioning position of the workpiece should be selected to have relatively high rigidity so as to avoid secondary deformation caused by clamping, thereby influencing the measurement accuracy.
Disclosure of Invention
In order to solve the defects of the technical scheme, the invention aims to provide the positioning device for the center hole of the thin-wall rotating member.
The aim of the invention is achieved by the following technical scheme.
The positioning device comprises a connecting column, a main positioning column, a plurality of auxiliary positioning columns and a movable ejector rod, wherein the main positioning column is arranged at the central position of the upper end of the connecting column, and the auxiliary positioning columns are arranged at the upper end of the connecting column and used for axial limiting; the lower end of the connecting column is connected with the rotary mechanism to realize uniform rotation of the thin-wall rotary member;
the main positioning column is provided with a vertical half hole, the movable ejector rod is positioned in the vertical half hole, a radial transverse half hole is formed in the main positioning column, the transverse half hole is communicated with the vertical half hole, a spring is placed in the transverse half hole, one end of the spring is in contact with the main positioning column, and the other end of the spring is in contact with the movable top plate, so that radial tensioning positioning of the thin-wall rotary part is realized.
In the technical scheme, the side wall of the main positioning column is provided with the hole, the upper end part of the movable ejector rod is outwards bent to form the top end bending part, the top end bending part is positioned in the hole, the spring radially outwards extrudes the movable ejector rod, and the tail end of the top end bending part is contacted with the thin-wall rotary part to realize radial tensioning and positioning of the thin-wall rotary part.
In the above technical scheme, the number of the auxiliary positioning columns is 3.
In the above technical scheme, each auxiliary positioning column is fixedly mounted on the connecting column through a screw.
In the above technical scheme, 3 auxiliary positioning columns are uniformly distributed around the main positioning column.
In the above technical scheme, a cylindrical table is mounted on the upper end face of the connecting column, and the main positioning column and the auxiliary positioning column are mounted on the cylindrical table.
In the above technical scheme, the diameter of the cylindrical table is larger than that of the connecting column, the connecting column is located at the center of the cylindrical table, and the vertical half hole is located in the main positioning column, the cylindrical table and the connecting column.
In the technical scheme, the outer diameter of the main positioning column is matched with the aperture of the central hole of the thin-wall rotary member.
In the technical scheme, the coaxiality of the main positioning column is smaller than 0.005mm.
In the technical scheme, the movable ejector rod is connected with the main positioning column through the rotating pin shaft.
In the above technical scheme, a through hole is formed in the movable ejector rod, a half hole is formed along the radial direction of the main positioning column, and the through hole is communicated with the half hole.
In the above technical scheme, the rotating pin is inserted in the through hole, the tail end of the rotating pin is positioned in the half hole, and the small-range rotation of the movable ejector rod is realized under the action force of the spring along the radial direction.
In the technical scheme, the upper end of the movable ejector rod is spherical, so that the thin-wall rotary part is prevented from being scratched, and tensioning and positioning are realized.
The invention has the advantages and beneficial effects that:
1. according to the positioning device for the central hole of the thin-wall rotary member, the central hole with high rigidity of the thin-wall rotary member is used for positioning, the main positioning column and the auxiliary positioning column are arranged to realize the axial positioning of the thin-wall rotary member, and meanwhile, due to the matching among the movable ejector rod, the spring and the main positioning column and the matching among the movable ejector rod, the rotating pin shaft and the main positioning column, the radial accurate positioning of the thin-wall rotary member can be realized. Moreover, the thin-wall rotary member can be radially tensioned due to the arrangement of the springs, so that the thin-wall rotary member cannot axially and radially move in the rotary process while accurate positioning is achieved, and the measurement accuracy of the thin-wall rotary member is ensured.
2. The invention can meet the measurement and positioning requirements of the thin-wall rotary member with strong rigidity at the central part and positioning holes, is convenient to assemble and disassemble, and is easy to take and place workpieces.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the positioning device for the center hole of the thin-wall rotary member;
FIG. 2 is a top view of the center hole positioning device of the thin-walled rotary member of the present invention.
Wherein,,
1: connection column, 2: main reference column, 3: auxiliary positioning column, 4: movable ejector rod, 4-1: top end bending part, 5: spring, 6: cylinder table, 7: and rotating the pin shaft.
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
The technical scheme of the invention is further described below with reference to specific embodiments.
Example 1
As shown in fig. 1-2, the positioning device for the center hole of the thin-wall rotary member comprises a connecting column 1, a main positioning column 2, a plurality of auxiliary positioning columns 3 and a movable ejector rod 4, wherein the main positioning column 2 is arranged at the center position of the upper end of the connecting column 1, and the plurality of auxiliary positioning columns 3 are arranged at the upper end of the connecting column 1 and uniformly distributed around the main positioning column 2 for axial limiting; the lower end of the connecting column 1 is connected with a rotary mechanism, so that uniform rotation of the thin-wall rotary member is realized; a vertical half hole is formed in the main positioning column 2 and the connecting column 1, the movable ejector rod 4 is located in the vertical half hole, a radial transverse half hole is formed in the main positioning column 2 and is communicated with the vertical half hole, a spring 5 is placed in the transverse half hole, one end of the spring 5 is in contact with the main positioning column 2, and the other end of the spring 5 is in contact with the movable top plate; the side wall of the main positioning column 2 is provided with a hole, the upper end part of the movable ejector rod 4 is outwards bent to form a top end bending part 4-1, the top end bending part 4-1 is positioned in the hole, the spring 5 radially outwards extrudes the movable ejector rod 4, and the tail end of the top end bending part 4-1 is contacted with the thin-wall rotary part, so that the radial tensioning and positioning of the thin-wall rotary part can be realized.
In this embodiment, the number of the auxiliary positioning columns 3 is 3, and the auxiliary positioning columns are fixedly installed on the connecting column 1 through screws and are used for limiting the axial direction of the thin-wall rotary member. The outer diameter of the main positioning column 2 is matched with the aperture of the central hole of the thin-wall rotary member, and the coaxiality of the main positioning column is smaller than 0.005mm.
Specifically, in this embodiment, a cylindrical stand 6 is installed on the upper end surface of the connection column 1, the main positioning column 2 and the auxiliary positioning column 3 are both installed on the cylindrical stand 6, the diameter of the cylindrical stand 6 is greater than that of the connection column 1, and the connection column 1 is located at the center position of the cylindrical stand 6. The vertical half holes are positioned in the main positioning column 2, the cylinder stand 6 and the connecting column 1.
In this embodiment, the thin-walled rotating member is provided with a center hole (positioning hole).
Example 2
As shown in fig. 1-2, on the basis of embodiment 1, a through hole is formed in the movable ejector rod 4 (the through hole is disposed along the radial direction of the movable ejector rod 4 and is located at the lower part of the movable ejector rod 4), a half hole is formed along the radial direction of the main positioning column 2, a rotating pin shaft 7 is inserted into the through hole, and the tail end of the rotating pin shaft 7 is located inside the half hole, so that small-range rotation of the movable ejector rod 4 is realized under the action force of the spring 5 along the radial direction.
Example 3
As shown in fig. 1-2, on the basis of embodiment 1, the upper end of the movable ejector rod 4 is spherical, and the upper end contacts with the central hole of the thin-wall rotary member, so that the thin-wall rotary member can be prevented from being scratched by the spherical design, and tensioning and positioning are realized.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "lower" may encompass both an upper and lower orientation. The device may be otherwise positioned (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second", and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The foregoing has described exemplary embodiments of the invention, it being understood that any simple variations, modifications, or other equivalent arrangements which would not unduly obscure the invention may be made by those skilled in the art without departing from the spirit of the invention.
Claims (13)
1. The positioning device for the center hole of the thin-wall rotary member is characterized by comprising a connecting column, a main positioning column, a plurality of auxiliary positioning columns and a movable ejector rod, wherein the main positioning column is arranged at the center position of the upper end of the connecting column, and the auxiliary positioning columns are arranged at the upper end of the connecting column and used for axial limiting; the lower end of the connecting column is connected with the rotary mechanism to realize uniform rotation of the thin-wall rotary member;
the main positioning column is provided with a vertical half hole, the movable ejector rod is positioned in the vertical half hole, a radial transverse half hole is formed in the main positioning column, the transverse half hole is communicated with the vertical half hole, a spring is placed in the transverse half hole, one end of the spring is in contact with the main positioning column, and the other end of the spring is in contact with the movable top plate, so that radial tensioning positioning of the thin-wall rotary part is realized.
2. The positioning device for a center hole of a thin-wall rotary member according to claim 1, wherein a hole is formed in a side wall of the main positioning column, an upper end portion of the movable ejector rod is bent outwards to form a top end bending portion, the top end bending portion is located in the hole, the spring presses the movable ejector rod outwards in the radial direction, and the tail end of the top end bending portion is in contact with the thin-wall rotary member to achieve radial tensioning positioning of the thin-wall rotary member.
3. The positioning device for the center hole of the thin-walled rotary member according to claim 2, wherein the number of the auxiliary positioning columns is 3.
4. A thin-walled rotary member centre bore locating apparatus according to claim 3 wherein each of the auxiliary locating posts is fixedly mounted to the connecting post by a screw.
5. The thin-walled rotating member central bore locating apparatus of claim 4 wherein 3 of said secondary locating posts are uniformly distributed about said primary locating post.
6. The positioning device for a center hole of a thin-walled rotary member according to claim 5, wherein a cylindrical stand is installed on an upper end surface of the connecting column, and the main positioning column and the auxiliary positioning column are installed on the cylindrical stand.
7. The thin-walled rotating member central bore locating apparatus of claim 6, wherein the diameter of the cylindrical land is greater than the diameter of the connecting post, the connecting post is located at the center of the cylindrical land, and the vertical half bore is located within the main locating post, cylindrical land and connecting post.
8. The thin-walled rotary member central bore positioning apparatus of claim 7, wherein the outer diameter of the main positioning column matches the central bore diameter of the thin-walled rotary member.
9. The thin-walled rotating member central bore locating device of claim 8, wherein the primary locating post has a coaxiality of less than 0.005mm.
10. The thin-walled rotating member center hole positioning device of claim 9, wherein the movable ejector rod is connected to the main positioning column by a rotating pin.
11. The positioning device for a center hole of a thin-walled rotary member according to claim 10, wherein a through hole is formed in the movable ejector rod, a half hole is formed in the radial direction of the main positioning column, and the through hole is communicated with the half hole.
12. The positioning device for a center hole of a thin-walled rotary member according to claim 11, wherein the rotating pin is inserted into the through hole, and the end of the rotating pin is positioned inside the half hole, so that the small-range rotation of the movable ejector rod is realized under the action force of the spring along the radial direction.
13. The positioning device for a center hole of a thin-wall rotary member according to claim 12, wherein the upper end of the movable ejector rod is spherical, so that the thin-wall rotary member is prevented from being scratched, and tensioning positioning is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211731179.9A CN116007549A (en) | 2022-12-30 | 2022-12-30 | Thin-wall rotating member center hole positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211731179.9A CN116007549A (en) | 2022-12-30 | 2022-12-30 | Thin-wall rotating member center hole positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116007549A true CN116007549A (en) | 2023-04-25 |
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ID=86024694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211731179.9A Pending CN116007549A (en) | 2022-12-30 | 2022-12-30 | Thin-wall rotating member center hole positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116007549A (en) |
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2022
- 2022-12-30 CN CN202211731179.9A patent/CN116007549A/en active Pending
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