CN219854182U - Positioning fixture assembly for multi-size workpieces - Google Patents
Positioning fixture assembly for multi-size workpieces Download PDFInfo
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- CN219854182U CN219854182U CN202321163851.9U CN202321163851U CN219854182U CN 219854182 U CN219854182 U CN 219854182U CN 202321163851 U CN202321163851 U CN 202321163851U CN 219854182 U CN219854182 U CN 219854182U
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- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Jigs For Machine Tools (AREA)
Abstract
The utility model relates to a positioning fixture assembly for multi-size workpieces, and belongs to the technical field of fixture assemblies. An inner rotary disc is arranged on a mounting plate of the assembly, the middle part of the inner rotary disc is fixedly connected with a rotary output end of a rotary driving device and forms a revolute pair with a central hole of the mounting plate, and an outer guide fixed disc fixedly connected with the mounting plate is covered on the inner rotary disc; the outer guide fixed disc is provided with three evenly distributed guide rail grooves with symmetrical central lines extending tangentially from the same base circle, and the guide rail grooves and the positioning clamping blocks form a moving pair; the inner rotary disc is provided with three uniformly distributed guide grooves with symmetrical central lines extending tangentially from the same base circle, and the guide grooves and the guide blocks form a moving pair; the vertical perforation of the positioning clamping block is penetrated with a shaft pin, the lower end of which is connected with the guide block; the guide rail groove and the guide groove respectively extend in a clockwise tangential direction and a counterclockwise tangential direction. The utility model is suitable for workpieces with various shapes and sizes, so that the types of tool fixtures can be reduced, and the production management is convenient.
Description
Technical Field
The utility model relates to a special positioning fixture assembly, in particular to a positioning fixture assembly for a multi-size workpiece, and belongs to the technical field of tool fixtures.
Background
Different process requirements in the production process often require various special tool fixtures. The designed positioning clamp is different according to different products, different processing modes and even different automation degrees, so that the manufacturing of the tool clamp is very troublesome, and the management of the tool clamp is very complicated.
As can be seen from the search, chinese patent documents named "a holding mechanism and quick positioning jig" (grant bulletin number CN 210909127U), named "positioning jig and positioning jig assembly" (grant bulletin number CN 203981495U), and named "a positioning jig and positioning jig platform for replacing a workbench" (grant bulletin number CN 211640547U) respectively disclose several kinds of special tool jigs, but they are suitable for positioning and clamping under the requirements of specific products and process scenes, and are difficult to adapt to workpieces of different sizes.
Disclosure of Invention
The utility model aims at: aiming at the complex conditions of the prior art, the positioning fixture assembly for the workpieces with various sizes is provided, so that the supporting and fixing process requirements of the workpieces with various shapes and sizes are met, the types of the fixture are reduced, and the production management is facilitated.
In order to achieve the above purpose, the basic technical scheme of the positioning fixture assembly for the multi-size workpiece is as follows: the rotary driving device comprises a mounting plate fixedly supported on a base, wherein an inner rotary disc is arranged on the upper surface of the mounting plate, the middle part of the inner rotary disc is fixedly connected with the rotary output end of the rotary driving device and forms a revolute pair with a central hole of the mounting plate, and an outer guide fixing disc fixedly connected with the mounting plate is covered on the inner rotary disc;
the outer guide fixing disc is provided with three uniformly distributed guide rail grooves with symmetrical central lines extending tangentially from the same base circle, and the guide rail grooves and the positioning clamping blocks form a moving pair;
the inner rotary disc is provided with three uniformly distributed guide grooves with symmetrical central lines extending tangentially from the same base circle, and the guide grooves and the guide blocks form a moving pair;
the vertical perforation of the positioning clamping block penetrates through a shaft pin, the lower end of which is connected with the guide block; the guide rail groove and the guide groove respectively extend in a clockwise tangential direction and a counterclockwise tangential direction.
When the clamping device is used, a workpiece to be clamped is placed between the three positioning clamping blocks, the inner rotary disc is driven to rotate by the rotary driving device, and the three positioning clamping blocks can be synchronously retracted and shifted to clamp the workpiece under the organic combination effect of the guide rail groove moving pair and the guide groove moving pair which are tangentially extended in opposite directions respectively. The utility model is suitable for workpieces with various shapes and sizes, so that the types of tool fixtures can be reduced, and the production management is convenient.
The utility model is further perfected as follows: the positioning clamp splice is provided with an inward-inclined upper expanding inclined plane, and the inner end of the upper expanding inclined plane is provided with a clamping step forming a supporting platform.
The utility model is still further perfected as follows: the two sides of the guide rail groove are respectively provided with a convex clamping rib, and the two sides of the positioning clamping block are respectively provided with a groove matched with the convex clamping ribs.
The utility model is further perfected as follows: the horizontal rotating shaft end of the rotary driving device is provided with a pluggable crank, and the horizontal rotating shaft is in transmission connection with the rotary output end through a right-angle rotary transmission mechanism.
The utility model is further perfected as follows: the rotary output end and the central hole of the mounting plate form a revolute pair.
Drawings
The utility model is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic perspective view of an embodiment of the present utility model.
Fig. 2 is a schematic perspective view of the embodiment of fig. 1 after the guide fixing plate is hidden.
Fig. 3 is a top view of the embodiment of fig. 1.
Fig. 4 is a bottom view of the embodiment of fig. 1.
Fig. 5 is a front view of the embodiment of fig. 1.
Fig. 6 is a rear view of the embodiment of fig. 1.
Fig. 7 is a right side view of the embodiment of fig. 1.
Fig. 8 is a left side view of the embodiment of fig. 1.
Fig. 9 is a schematic diagram illustrating a clamping state of the embodiment of fig. 1.
Fig. 10 is a schematic top view of fig. 9.
Fig. 11 is a schematic exploded perspective view of the embodiment of fig. 1.
Description of the embodiments
The inner positioning clamp assembly for the multi-size workpiece in the embodiment is shown in fig. 1-11, and comprises a mounting plate 3 fixedly supported on a base 1 through a plurality of connecting rods 2, wherein an inner rotary disc 6 is arranged on the upper surface of the mounting plate 3, the middle part of the inner rotary disc 6 is fixedly connected with a rotary output end 9-1 of a rotary driving device 9 arranged below the mounting plate 3, the rotary output end 9-1 and a central hole of the mounting plate 3 form a revolute pair, and an outer guide fixed disc 4 fixedly connected with the mounting plate 3 is covered on the inner rotary disc 6.
The outer guiding fixed disk 4 is provided with three uniformly distributed guide rail grooves 4-1 with symmetrical central lines C extending anticlockwise and tangentially from the same base circle 0 (see figure 3), each guide rail groove 4-1 and a wedge-shaped positioning clamping block 5 with an inward-inclined upper expanding inclined surface 5-1 form a moving pair, and the inner end of the upper expanding inclined surface 5-1 is provided with a clamping step 5-2 forming a supporting platform. More specifically, the two sides of the guide rail groove 4-1 are provided with convex clamping ribs 4-2, and the two sides of the positioning clamping block 5 are respectively provided with grooves 5-4 matched with the convex clamping ribs 4-2. The upper inclined surface 5-1 of the three positioning clamping blocks 5 is expanded.
The inner rotary disk 6 is provided with three evenly distributed guide grooves 6-1 with symmetrical central lines extending from the same base circle in a clockwise tangential direction, and each guide groove 6-1 and the guide block 8 respectively form a moving pair. The vertical perforation 5-3 of the positioning clamp block 5 is penetrated with a shaft pin 7, and the lower end of the shaft pin 7 is connected with a guide block 8.
The horizontal rotating shaft end of the rotary driving device 9 is provided with a pluggable crank 10, and the horizontal rotating shaft is in transmission connection with the rotary output end 9-1 through a right-angle rotary transmission mechanism, so that the rotary crank 10 can enable the inner rotary disc 6 to rotate, and further the three positioning clamping blocks 5 and the reversely extending guide rail groove 4-1 moving pairs which are pulled by the three guide grooves 6-1 and the guide blocks 8 are utilized to correspond to the three positioning clamping blocks 5, so that the three positioning clamping blocks 5 synchronously shift and clamp a workpiece, and the workpiece to be supported and fixed is fixed and clamped on an upper expanding inclined plane between the three positioning clamping blocks.
Compared with the prior art, the positioning fixture assembly of the embodiment has the following remarkable advantages:
1) By means of three positioning clamping blocks with upper inclined planes, the inner ends of the upper inclined planes are provided with clamping steps forming a supporting platform, and various workpieces with the sizes varying within a certain range can be supported and fixed;
2) The three positioning clamp block support platforms are uniformly distributed on the same circumference, so that the three positioning clamp block support platforms are suitable for clamping workpieces with circumferential curved surfaces (such as cylinders, spheres, hemispherical shells and the like) and workpieces with diameter sizes changing in a certain range;
3) The inner rotary disc rotates by taking the center of the disc as a rotating point, so that the guide block is ensured to drive the positioning clamping block to move towards the center, and the accuracy and consistency of the workpiece support and fixed positions are ensured;
4) The positioning clamping block is stable and reliable when the convex clamping rib of the outer guide fixing disc meshed with the positioning clamping block slides.
In addition to the embodiments described above, other embodiments of the utility model are possible. All technical schemes formed by equivalent substitution or equivalent transformation are included in the scope defined by the claims of the present utility model.
Claims (5)
1. An internal positioning jig assembly for multi-sized workpieces, comprising a mounting plate (3) fixedly supported on a base (1), characterized in that: an inner rotary disc (6) is arranged on the upper surface of the mounting plate, the middle part of the inner rotary disc is fixedly connected with a rotary output end (9-1) of a rotary driving device (9) and forms a revolute pair with a central hole of the mounting plate, and an outer guide fixed disc (4) fixedly connected with the mounting plate is covered on the upper surface of the inner rotary disc;
the outer guide fixing disc is provided with three uniformly distributed guide rail grooves (4-1) with symmetrical central lines extending tangentially from the same base circle, and the guide rail grooves and the positioning clamping blocks (5) form a moving pair;
the inner rotary disc is provided with three uniformly distributed guide grooves (6-1) with symmetrical central lines extending tangentially from the same base circle, and the guide grooves and the guide blocks (8) form a moving pair;
the vertical perforation (5-3) of the positioning clamp splice is penetrated with a shaft pin (7) the lower end of which is connected with the guide block; the guide rail groove and the guide groove respectively extend in a clockwise tangential direction and a counterclockwise tangential direction.
2. The positioning fixture assembly for a multi-sized workpiece as recited in claim 1, wherein: the positioning clamp splice is provided with an inward-inclined upper expanding inclined plane, and the inner end of the upper expanding inclined plane is provided with a clamping step forming a supporting platform.
3. The positioning fixture assembly for a multi-sized workpiece as recited in claim 2, wherein: the two sides of the guide rail groove are respectively provided with a convex clamping rib, and the two sides of the positioning clamping block are respectively provided with a groove matched with the convex clamping ribs.
4. A positioning fixture assembly for a multi-sized workpiece as recited in claim 3 wherein: the horizontal rotating shaft end of the rotary driving device is provided with a pluggable crank, and the horizontal rotating shaft is in transmission connection with the rotary output end through a right-angle rotary transmission mechanism.
5. The positioning fixture assembly for a multi-sized workpiece as recited in claim 4, wherein: the rotary output end and the central hole of the mounting plate form a revolute pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321163851.9U CN219854182U (en) | 2023-05-15 | 2023-05-15 | Positioning fixture assembly for multi-size workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321163851.9U CN219854182U (en) | 2023-05-15 | 2023-05-15 | Positioning fixture assembly for multi-size workpieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219854182U true CN219854182U (en) | 2023-10-20 |
Family
ID=88323195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321163851.9U Active CN219854182U (en) | 2023-05-15 | 2023-05-15 | Positioning fixture assembly for multi-size workpieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219854182U (en) |
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2023
- 2023-05-15 CN CN202321163851.9U patent/CN219854182U/en active Active
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