CN215659031U - High-precision positioning fixture - Google Patents
High-precision positioning fixture Download PDFInfo
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- CN215659031U CN215659031U CN202122409160.XU CN202122409160U CN215659031U CN 215659031 U CN215659031 U CN 215659031U CN 202122409160 U CN202122409160 U CN 202122409160U CN 215659031 U CN215659031 U CN 215659031U
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Abstract
The utility model discloses a high-precision positioning fixture which comprises a positioning seat and a plurality of positioning components, wherein the top end surface of the positioning seat is formed into a positioning surface, the plurality of positioning components are arranged on the positioning surface, and each positioning component comprises a positioning block and a positioning pressing sheet; the positioning blocks are fixedly connected to the positioning surface and are circumferentially distributed at intervals around a central axis of the positioning device; the positioning pressing piece is detachably arranged on the positioning block and forms a positioning interval with the positioning pressing piece. The high-precision positioning fixture can be used for positioning workpieces in different shapes.
Description
Technical Field
The utility model relates to the technical field of machining clamps, in particular to a high-precision positioning clamp.
Background
At present, more and more castings are used in the fields of aerospace scientific research and the like, and due to the fact that the castings are complex in structure and thin-walled castings are irregular, inconvenience is brought to machining and clamping, and meanwhile precision is difficult to guarantee.
In the traditional processing method, an area of a casting surface which is not processed is selected for clamping, and the clamping is inconvenient and the processing time is long due to factors of all sides of the casting.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a high-precision positioning clamp which can position workpieces in different shapes.
The purpose of the utility model is realized by adopting the following technical scheme:
a high-precision positioning clamp comprises a positioning seat and a plurality of positioning components, wherein the top end surface of the positioning seat is formed into a positioning surface, the plurality of positioning components are arranged on the positioning surface, and each positioning component comprises a positioning block and a positioning pressing sheet; the positioning blocks are fixedly connected to the positioning surface and are circumferentially distributed at intervals around a central axis of the positioning device; the positioning pressing piece is detachably arranged on the positioning block and forms a positioning interval with the positioning pressing piece.
Further, the locating surface is gradually inclined downwards from one side to the other side.
Furthermore, the top end face of the positioning block is an inclined face, and the inclined direction of the inclined face is consistent with the inclined direction of the positioning face.
Furthermore, a first connecting hole is formed in the positioning pressing sheet, and a second connecting hole is formed in the positioning block; and a connecting piece penetrates through the first connecting hole.
Further, the first connection holes are strip-shaped holes.
Furthermore, the high-precision positioning fixture also comprises a base, wherein positioning columns are arranged on two sides of the base; locating holes are formed in two sides of the bottom end of the locating seat, and the locating columns are used for being inserted into the locating holes.
Furthermore, two positioning columns are arranged on two sides of the base, and two positioning holes are arranged on two sides of the bottom end of each positioning column.
Compared with the prior art, the utility model has the beneficial effects that: when it is fixing a position, can butt joint the different positions in bottom of work piece to different locating pieces on, then through the work piece part of the crimping on corresponding locating piece of the location preforming that corresponds, the part alright centre gripping of work piece is in the location interval by locating piece and location preforming formation, because the interval between location preforming and the locating piece can be according to actually placing the work piece part thickness at the locating piece and carry out independent adjustment, therefore can be applicable to the location of irregular work piece, and the work piece that is suitable for is more.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the clamping structure of the present invention.
In the figure: 10. positioning seats; 11. positioning the surface; 21. positioning blocks; 22. positioning the pressing sheet; 221. A first connection hole; 30. a base; 31. a positioning column; 40. and (5) a workpiece.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1 and 2, the high-precision positioning jig includes a positioning seat 10 and a plurality of positioning units, wherein a top end surface of the positioning seat 10 is formed as a positioning surface 11, and the plurality of positioning units are all provided on the positioning surface 11.
The specific positioning assembly comprises positioning blocks 21 and positioning pressing sheets 22, the positioning blocks 21 of the positioning assemblies are fixedly connected to the positioning surface 11, and the positioning blocks 21 are distributed at intervals around the circumference of the central axis of positioning. The positioning pressing piece 22 is detachably mounted on the positioning block 21, and forms a positioning space with the positioning pressing piece 22.
On the basis of the structure, when the high-precision positioning fixture is used, different positions of the bottom end of the workpiece 40 can be abutted to different positioning blocks 21 during positioning, then the corresponding positioning pressing sheets 22 are pressed on the parts of the workpiece 40 on the corresponding positioning blocks 21, the parts of the workpiece 40 can be clamped in the positioning intervals formed by the positioning blocks 21 and the positioning pressing sheets 22, and the intervals between the positioning pressing sheets 22 and the positioning blocks 21 can be independently adjusted according to the thickness of the parts of the workpiece 40 actually placed on the positioning blocks 21, so that the high-precision positioning fixture can be suitable for positioning irregular workpieces 40, and more workpieces 40 are suitable for use.
Referring to fig. 2, the workpiece 40 clamped in fig. 2 is annular, and the positioning blocks 21 of the positioning assemblies can be enclosed in an annular shape on the positioning surface 11, so that the annular workpiece 40 can be positioned and clamped at different positions.
Certainly, when the workpiece 40 has a hole, the positioning pressing sheet 22 can extend into the hole of the workpiece 40 and then be connected with the positioning block 21, and the clamping can also be realized, so that the positioning pressing sheet can be suitable for positioning workpieces 40 with different structures.
Further, in this embodiment, the positioning surface 11 is inclined downward from one side to the other side, so that the positioning surface is suitable for clamping the workpiece 40 with an inclined bottom surface, and the clamping instability caused by the inclined bottom surface of the workpiece 40 is avoided.
More specifically, in order to more stably assemble the workpiece 40 without the inclined surface at the bottom end of the workpiece 40, the top end surface of the positioning block 21 is an inclined surface, and the inclined direction of the inclined surface is consistent with the inclined direction of the positioning surface 11, so that the situation that clamping is unstable due to the inclined bottom surface of the workpiece 40 is avoided, and the clamping structure is more stable.
Furthermore, in order to facilitate the detachable clamping of the positioning pressing piece 22 and the positioning block 21, a first connection hole 221 may be formed in the positioning pressing piece 22, and a second connection hole may be correspondingly formed in the positioning block 21, after the workpiece 40 is assembled in the positioning block 21, a connection piece may be connected in the first connection hole 221 of the corresponding positioning pressing piece 22 in a penetrating manner, and then the other end of the connection piece may be inserted, clamped or screwed into the second connection hole, so that the detachable connection of the positioning pressing piece 22 and the positioning block 21 may be achieved.
It should be noted that the connecting member in this embodiment may be a bolt structure in the prior art, and in other cases, the connecting member may be a bayonet lock or the like.
Further, the first connection holes 221 are bar-shaped holes, and the connection members can slide in the bar-shaped holes and can be adjusted to different positions for connection.
Further, the high-precision positioning fixture further comprises a base 30, positioning columns 31 are arranged on two sides of the base 30, positioning holes are formed in two sides of the bottom end of the positioning seat 10 correspondingly, after the workpiece 40 is clamped on the positioning seat 10, the positioning seat 10 can be placed on the base 30, the positioning columns 31 on the base 30 can be inserted into the positioning holes in the bottom end of the positioning seat 10 to position the positioning seat 10, the base 30 can be installed on a machine tool, therefore, the workpiece 40 can be clamped at each time and can be clamped and positioned by the positioning seat 10 and the positioning assembly, when the positioning seat 10 is assembled on the base 30 connected with the machine tool, the positioning columns 31 on the base 30 and the positioning holes in the bottom end of the positioning seat can be further clamped, the positioning is more accurate, and the machining precision is further improved.
In addition, the positioning seat 10 is placed in the base 30 after being clamped outside the machine tool every time, and after being positioned by the base 30, the workpiece 40 is clamped on the machine tool at the same position every time, so that the machining precision of the workpiece 40 is higher.
Furthermore, two positioning columns 31 are disposed on two sides of the base 30, and two positioning holes are disposed on two sides of the bottom end of the positioning seat 10, so that four positioning columns 31 can be disposed on the base 30, and four positioning holes can be disposed on the bottom end of the corresponding positioning seat 10, so that the positioning seat 10 and the base 30 can be clamped and positioned all around, and the positioning is more accurate.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (7)
1. A high-precision positioning clamp is characterized by comprising a positioning seat and a plurality of positioning components, wherein the top end surface of the positioning seat is formed into a positioning surface, the plurality of positioning components are arranged on the positioning surface, and each positioning component comprises a positioning block and a positioning pressing sheet; the positioning blocks are fixedly connected to the positioning surface and are circumferentially distributed at intervals around a central axis of the positioning device; the positioning pressing piece is detachably arranged on the positioning block and forms a positioning interval with the positioning pressing piece.
2. The high-precision positioning jig according to claim 1, wherein the positioning surface is inclined gradually downward from one side to the other side.
3. The high-precision positioning jig according to claim 2, wherein the top end surface of the positioning block is an inclined surface, and the inclined surface has an inclined direction that coincides with the inclined direction of the positioning surface.
4. The high-precision positioning fixture of claim 1, wherein a first connecting hole is formed on the positioning pressing sheet, and a second connecting hole is formed on the positioning block; and a connecting piece penetrates through the first connecting hole.
5. The high-precision positioning jig of claim 4, wherein the first connecting holes are strip-shaped holes.
6. The high-precision positioning fixture according to any one of claims 1 to 5, further comprising a base, wherein positioning columns are arranged on two sides of the base; locating holes are formed in two sides of the bottom end of the locating seat, and the locating columns are used for being inserted into the locating holes.
7. The high-precision positioning fixture according to claim 6, wherein two positioning columns are disposed on two sides of the base, and two positioning holes are disposed on two sides of the bottom end of the positioning seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122409160.XU CN215659031U (en) | 2021-09-30 | 2021-09-30 | High-precision positioning fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122409160.XU CN215659031U (en) | 2021-09-30 | 2021-09-30 | High-precision positioning fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215659031U true CN215659031U (en) | 2022-01-28 |
Family
ID=79967924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122409160.XU Active CN215659031U (en) | 2021-09-30 | 2021-09-30 | High-precision positioning fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215659031U (en) |
-
2021
- 2021-09-30 CN CN202122409160.XU patent/CN215659031U/en active Active
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