CN211249251U - Three-jaw positioning mechanism based on connecting rod - Google Patents
Three-jaw positioning mechanism based on connecting rod Download PDFInfo
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- CN211249251U CN211249251U CN201921998690.9U CN201921998690U CN211249251U CN 211249251 U CN211249251 U CN 211249251U CN 201921998690 U CN201921998690 U CN 201921998690U CN 211249251 U CN211249251 U CN 211249251U
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- connecting rod
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- jaw
- positioning mechanism
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Abstract
The utility model provides a three-jaw positioning mechanism based on connecting rod has solved the problem that the screw rod regulation formula three-jaw anchor clamps clamping force can not be unified, can not adapt to the machined part in different inner ring footpaths simultaneously. The utility model discloses a base installs rotatable rotation axis on the base, is equipped with the rotatory connecting rod of three-bar structure on the rotation axis, and the three pole head punishment of rotatory connecting rod do not rotates and is connected with a locating piece, and the locating piece slides and establishes on the base, is equipped with on the base to be used for driving rotatory connecting rod pivoted rotary driving mechanism. When the device is used, a circular workpiece to be processed is placed on the three positioning blocks at the same time, the rotating connecting rod is driven to rotate, the rotating connecting rod drives the positioning blocks to move outwards, and push rods on the three positioning blocks prop against the circular workpiece from different directions, so that the circular workpiece is fixed.
Description
Technical Field
The utility model relates to a fixed equipment of machined part especially indicates a three-jaw positioning mechanism based on connecting rod.
Background
At present, a circular workpiece to be processed is required to be fixed frequently in the industrial production process, the circular workpiece to be processed is fixed through a three-jaw clamp under most conditions, clamping force of each clamping jaw is adjusted through a screw rod, however, the clamping jaws are fixed, so that the requirement of adapting to circular workpieces with different inner ring diameters (the inner diameters of workpieces to be processed in the same batch sometimes have deviation) is difficult to meet, and the clamping degrees of the three clamping jaws cannot be kept uniform through adjusting the clamping force through the screw rods, so that the local stress of the circular workpiece is unbalanced and deformation is caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the screw rod that exists adjusts formula three-jaw anchor clamps clamping force degree can not be unified, can not adapt to the processing demand of the machined part of different inner ring footpaths simultaneously, the utility model provides a three-jaw positioning mechanism based on connecting rod.
The technical scheme of the utility model is that: the utility model provides a three-jaw positioning mechanism based on connecting rod, includes the base, installs rotatable rotation axis on the base, is equipped with the rotatory connecting rod of three-bar structure on the rotation axis, and the three pole head punishment of rotatory connecting rod rotates respectively and is connected with a locating piece, and the locating piece slides and establishes on the base, is equipped with on the base to be used for driving rotatory connecting rod pivoted rotary driving mechanism.
The three pole heads of the rotating connecting rod are provided with U-shaped open slots, the positioning block is provided with cylindrical movable rotating heads, and the movable rotating heads are arranged in the U-shaped open slots in a sliding mode.
The positioning block comprises a flat plate which is arranged on the base in a sliding mode, one end of the flat plate is connected with a shifting fork rod, and an acute included angle is reserved between the shifting fork rod and the flat plate; the tip of shifting fork pole is equipped with the mounting hole, and the upper end of activity rotating head is rotated and is established in the mounting hole, and one side that the dull and stereotyped is close to the shifting fork pole is equipped with vertical push rod.
And a stop block is arranged at the upper part of the push rod.
The rear portion of dog is connected with the frame template, and the frame template slides and establishes on the push rod, and the both sides of frame template all are equipped with the bolt pole that is used for fixing.
The rotary driving mechanism comprises an air cylinder, the front part of the air cylinder is provided with a connector, and the other end of the connector is fixedly connected with one of the positioning blocks.
The base is provided with three tracks, the tracks are provided with sliders, and the positioning blocks are fixedly arranged on the sliders.
The utility model has the advantages that: when the positioning device is used, a circular workpiece to be machined is placed on the three positioning blocks at the same time, the rotary connecting rod is driven to rotate through the air cylinder, the rotary connecting rod drives the positioning blocks to move outwards, and the push rods on the three positioning blocks prop against the circular workpiece from different directions, so that the circular workpiece is fixed. The utility model provides a positioning problem of the unsmooth circular workpiece of inner wall to and the positioning problem when work piece hole aperture has the deviation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic plan view of the structure of FIG. 1;
FIG. 3 is a schematic structural view of the rotating link and the slide rail in FIG. 1;
FIG. 4 is a schematic plan view of the structure of FIG. 3;
fig. 5 is a schematic perspective view of the slide rail in fig. 3;
FIG. 6 is a schematic bottom perspective view of the FIG. 5;
fig. 7 is a schematic perspective view of the positioning block in fig. 1.
In the figure, the device comprises a cylinder 1, a cylinder 2, a connector 3, a base 4, a rotating shaft 5, a track 6, a sliding block 601, a sliding groove 7, a rotating connecting rod 8, a positioning block 801, a shifting fork rod 802, a mounting hole 803, a push rod 804, a stop block 805, a connecting hole 9 and a movable rotating head.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
Example 1: the utility model provides a three-jaw positioning mechanism based on connecting rod, as shown in fig. 1 and 2, includes base 3, installs rotatable rotation axis 4 on the base 3, as shown in fig. 3 and 4, is equipped with the rotatory connecting rod 7 of three-bar structure on the rotation axis 4, and three pole head department of rotatory connecting rod 7 is equipped with U type open slot, is equipped with the activity rotating head 9 of cylinder type on the locating piece 8, and activity rotating head 9 slides and establishes in U type open slot. The positioning block 8 is slidably arranged on the base 3, as shown in fig. 7, the positioning block 8 comprises a flat plate slidably arranged on the base 3, one end of the flat plate is connected with a shifting fork rod 801, and an acute included angle is formed between the shifting fork rod 801 and the flat plate; the end part of the shifting fork rod 801 is provided with a mounting hole 802, the upper end of the movable rotating head 9 is rotatably arranged in the mounting hole 802, one side of the flat plate close to the shifting fork rod 801 is provided with a vertical push rod 803, the upper part of the push rod 803 is provided with a stop block 804, and the stop block 804 is used for stopping up and down movement of the circular workpiece during processing. Three tracks 5 are arranged on the base 3, a sliding block 6 shown in figures 5 and 6 is arranged on the tracks 5, and a positioning block 8 is fixedly arranged on the sliding block 6. As shown in fig. 1 and 2, the rear portion of one of the positioning blocks 8 is fixedly mounted on the cylinder 1 through the connecting head 2.
The working principle is as follows: the cylinder pulls the connected positioning blocks to slide, and then the other positioning blocks are driven to move outwards through the rotation of the rotating connecting rod, and the push rods on the three positioning blocks prop against the annular workpiece from different directions, so that the annular workpiece is fixed.
Example 2: the rear part of a stop block 804 is connected with a frame-shaped plate, the frame-shaped plate is arranged on a push rod 803 in a sliding mode, and bolt rods for fixing are arranged on two sides of the frame-shaped plate. The upper and lower heights of the stop block 804 are adjusted to meet the fixing requirements of circular workpieces with different thicknesses. The other structure is the same as embodiment 1.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a three-jaw positioning mechanism based on connecting rod which characterized in that: the rotary driving mechanism comprises a base (3), a rotatable rotating shaft (4) is installed on the base (3), a rotating connecting rod (7) of a three-rod structure is arranged on the rotating shaft (4), a positioning block (8) is respectively connected to three rod heads of the rotating connecting rod (7) in a rotating mode, the positioning block (8) is arranged on the base (3) in a sliding mode, and a rotary driving mechanism used for driving the rotating connecting rod (7) to rotate is arranged on the base (3).
2. A link-based three-jaw positioning mechanism as recited in claim 1, wherein: three rod heads of the rotating connecting rod (7) are provided with U-shaped open grooves, the positioning block (8) is provided with cylindrical movable rotating heads (9), and the movable rotating heads (9) are arranged in the U-shaped open grooves in a sliding mode.
3. A link-based three-jaw positioning mechanism as recited in claim 2, wherein: the positioning block (8) comprises a flat plate which is arranged on the base (3) in a sliding mode, one end of the flat plate is connected with a shifting fork rod (801), and an acute included angle is reserved between the shifting fork rod (801) and the flat plate; the end part of the shifting fork rod (801) is provided with a mounting hole (802), the upper end of the movable rotating head (9) is rotatably arranged in the mounting hole (802), and one side of the flat plate, which is close to the shifting fork rod (801), is provided with a vertical push rod (803).
4. A link-based three-jaw positioning mechanism as recited in claim 3, wherein: the upper part of the push rod (803) is provided with a stop block (804).
5. A link-based three-jaw positioning mechanism as recited in claim 4, wherein: the rear part of the stop block (804) is connected with a frame-shaped plate, the frame-shaped plate is arranged on the push rod (803) in a sliding mode, and bolt rods for fixing are arranged on two sides of the frame-shaped plate.
6. A link-based three-jaw positioning mechanism as recited in claim 5, wherein: the rotary driving mechanism comprises a cylinder (1), the front part of the cylinder (1) is provided with a connector (2), and the other end of the connector (2) is fixedly connected with one of the positioning blocks (8).
7. A link-based three-jaw positioning mechanism as recited in claim 6, wherein: three tracks (5) are arranged on the base (3), a sliding block (6) is arranged on the tracks (5), and the positioning block (8) is fixedly arranged on the sliding block (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921998690.9U CN211249251U (en) | 2019-11-19 | 2019-11-19 | Three-jaw positioning mechanism based on connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921998690.9U CN211249251U (en) | 2019-11-19 | 2019-11-19 | Three-jaw positioning mechanism based on connecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211249251U true CN211249251U (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921998690.9U Active CN211249251U (en) | 2019-11-19 | 2019-11-19 | Three-jaw positioning mechanism based on connecting rod |
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| Country | Link |
|---|---|
| CN (1) | CN211249251U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199423A (en) * | 2021-05-19 | 2021-08-03 | 博众精工科技股份有限公司 | Synchronous positioning mechanism |
| CN113732851A (en) * | 2021-11-05 | 2021-12-03 | 四川明泰微电子有限公司 | Device for polishing back of semiconductor wafer |
-
2019
- 2019-11-19 CN CN201921998690.9U patent/CN211249251U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199423A (en) * | 2021-05-19 | 2021-08-03 | 博众精工科技股份有限公司 | Synchronous positioning mechanism |
| CN113732851A (en) * | 2021-11-05 | 2021-12-03 | 四川明泰微电子有限公司 | Device for polishing back of semiconductor wafer |
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