CN218225701U - Self-centering positioning device using linear cylinder - Google Patents
Self-centering positioning device using linear cylinder Download PDFInfo
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- CN218225701U CN218225701U CN202222487843.1U CN202222487843U CN218225701U CN 218225701 U CN218225701 U CN 218225701U CN 202222487843 U CN202222487843 U CN 202222487843U CN 218225701 U CN218225701 U CN 218225701U
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Abstract
The utility model discloses a self-centering positioning device using a linear cylinder, which comprises a mounting base plate, a linear cylinder, a track and a linkage mechanism; a cross-shaped mounting base line is formed on the surface of the mounting substrate; the two linear cylinders are symmetrically positioned at two sides of the middle point of the crossed mounting base line, and the telescopic ends of the two linear cylinders correspond to each other; the two rails are arranged on the other base line of the crossed mounting base line and symmetrically positioned on two sides of the middle point of the crossed mounting base line; the rail is connected with a sliding block in a sliding way, and a positioning frame is fixed on the sliding block; the linkage mechanism is connected with the telescopic end of the linear cylinder and one end of the slide block facing the midpoint of the crisscross mounting base line to form a movable equilateral quadrilateral closed-loop mechanism. The utility model discloses utilize the nature of equilateral quadrilateral diagonal to fix a position the work piece, improved the precision of clamping, shortened the clamping time, reduced intensity of labour.
Description
Technical Field
The utility model relates to a machine-building technical field, more specifically the positioning device with from centering alignment that says so relates to one kind.
Background
In the machining operation, when automobile parts such as rings, discs, axles and engine boxes are machined, the machining positions of the parts can be effectively guaranteed by adopting the center positioning of the circular holes, and higher machining precision is guaranteed. Hole center location needs the manual alignment of operating personnel under the normal condition, in anchor clamps, also generally uses the dabber to fix a position under the traditional condition, and the positioning accuracy of processing part under this condition is guaranteed by the dabber, but because diameter tolerance's influence, processing part can produce the clearance with positioning spindle all the time to influence the machining accuracy, simultaneously because the dabber can wear and tear gradually in the use, can cause the part machining accuracy to worsen in long-time processing is used. And because the diameter of the mandrel is fixed, a single mandrel can only correspond to a processing part with one aperture, and the mode of replacing the mandrel can only be adopted for processing parts with different apertures, so that the labor intensity of workers is increased, and the processing time is also prolonged. The method is very unfavorable for the intelligent processing, flexible processing, high-efficiency and high-precision processing which are increasingly required at present.
In some occasions requiring higher machining precision, the traditional mandrel positioning cannot meet the machining requirement, and in such occasions, some expanding positioning elements are adopted, although the traditional expanding positioning elements can ensure the positioning precision of workpieces, the elements have smaller general diameter and higher cost, cannot be used for parts with larger positioning hole diameter, and cannot meet the flexible use requirement because the expanding range of the traditional expanding positioning elements is limited.
Therefore, how to provide a simple and accurate positioning device capable of self-centering and aligning and satisfying various aperture processing is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an use sharp jar from centering positioner aims at solving above-mentioned technical problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a self-centering positioning device using a linear cylinder, comprising:
a mounting substrate; a cross-shaped mounting base line is formed on the surface of the mounting substrate;
a linear cylinder; the number of the linear cylinders is two, the two linear cylinders are arranged on one base line of the crossed mounting base line, the two linear cylinders are symmetrically positioned on two sides of the midpoint of the crossed mounting base line, and the telescopic ends of the two linear cylinders correspond to the telescopic ends of the two linear cylinders;
a track; the number of the tracks is two, the two tracks are arranged on the other base line of the crossed mounting base line along the length direction of the two tracks and are symmetrically positioned on two sides of the midpoint of the crossed mounting base line; the track is connected with a sliding block in a sliding manner, and a positioning frame is fixed on the sliding block;
a linkage mechanism; the linkage mechanism is connected with the telescopic end of the linear cylinder, and the sliding block faces one end of the midpoint of the cross mounting base line to form a movable equilateral quadrilateral closed-loop mechanism.
Through the technical scheme, the utility model discloses utilize the nature of equilateral quadrilateral diagonal to fix a position the work piece: the linear cylinders at two ends of the diagonal line of the linkage mechanism are pushed to push the sliding blocks at two ends of the other diagonal line to move, and when the positioning frames on the sliding blocks at the two ends are completely contacted with the inner hole of the workpiece, the linear cylinders stop moving, and the workpiece is clamped in place. The utility model discloses a zero clearance fit between self-centering clamping, work piece and the device of work piece to can provide stable axial centering force. The clamping precision is improved, the clamping time is shortened, and the labor intensity is reduced.
Preferably, in the above self-centering positioning device using a linear cylinder, the linkage mechanism includes four joint frames and four links; the four joint frames are respectively fixed at the telescopic end of the linear cylinder and one end of the sliding block facing the midpoint of the crisscross mounting base line; the ends of the four connecting rods are sequentially and rotatably connected among the four joint frames.
Preferably, in the above self-centering positioning device using a linear cylinder, the link and the knuckle mount are connected by a pin.
Preferably, in the above self-centering positioning device using a linear cylinder, the cross section of the joint frame is U-shaped, and the end of the connecting rod is embedded in the U-shaped notch of the joint frame.
Preferably, in the above self-centering positioning device using a linear cylinder, the joint frame is fixedly connected with the telescopic end of the linear cylinder and the sliding block through set screws.
Preferably, in the above self-centering positioning device using a linear cylinder, the linear cylinder and the mounting substrate are fixedly connected by a set screw.
Preferably, in the above self-centering positioning device using a linear cylinder, the positioning frame and the slide block are fixedly connected by a set screw.
Preferably, in the above self-centering positioning device using a linear cylinder, the positioning frame is of an integral structure or a detachable and detachable split assembly structure.
Preferably, in the above self-centering positioning device using a linear cylinder, the rail and the mounting substrate are fixedly connected by a set screw.
Preferably, in the above self-centering positioning device using a linear cylinder, a diagonal line of the equilateral quadrilateral closed-loop mechanism coincides with the cross-shaped installation base line in an up-down correspondence.
Preferably, in the self-centering positioning device using the linear cylinder, the positioning frame is made of 45# or 40Cr structural steel.
According to the technical scheme, compared with the prior art, the utility model discloses a self-centering positioning device using a linear cylinder, which has reliable, practical and durable practical application effect; the whole structure is simple and clear, and the application range is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a top view of the self-centering positioning device of the present invention using a linear cylinder;
fig. 2 is a front sectional view of the self-centering positioning device using the linear cylinder according to the present invention.
Wherein:
1-a workpiece; 2-a positioning frame; 3-a slide block; 4-orbit; 5-mounting a substrate; 6-straight cylinder; 7-a joint frame; 8-connecting rod; 9-pin shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1 and 2, the embodiment of the present invention discloses a self-centering positioning device using a linear cylinder, including:
a mounting substrate 5; a crisscross mounting base line is formed on the surface of the mounting substrate 5;
a linear cylinder 6; the number of the linear cylinders 6 is two, the two linear cylinders 6 are arranged on one base line of the crossed mounting base line, the two linear cylinders 6 are symmetrically positioned on two sides of the middle point of the crossed mounting base line, and the telescopic ends of the two linear cylinders correspond to each other;
a track 4; the number of the rails 4 is two, and the two rails 4 are arranged on the other base line of the crossed mounting base line along the length direction and are symmetrically positioned at two sides of the middle point of the crossed mounting base line; the track 4 is connected with a sliding block 3 in a sliding way, and a positioning frame 2 is fixed on the sliding block 3;
a linkage mechanism; the linkage mechanism is connected with the telescopic end of the linear cylinder 6 and one end of the sliding block 3 facing the midpoint of the crisscross installation base line to form a movable equilateral quadrilateral closed-loop mechanism.
In order to further optimize the technical scheme, the linkage mechanism comprises four joint frames 7 and four connecting rods 8; the four joint frames 7 are respectively fixed at the telescopic end of the linear cylinder 6 and one end of the sliding block 3 facing the midpoint of the crisscross installation base line; the ends of the four connecting rods 8 are sequentially and rotatably connected among the four joint frames 7.
In the present embodiment, the four links 8 are equal length metal strips.
In order to further optimize the technical scheme, the connecting rod 8 and the joint frame 7 are connected through a pin shaft 9.
In order to further optimize the technical scheme, the section of the joint frame 7 is U-shaped, and the end head of the connecting rod 8 is embedded in the U-shaped notch of the joint frame 7.
In order to further optimize the technical scheme, the joint frame 7 is fixedly connected with the telescopic end of the linear cylinder 6 and the sliding block 3 through set screws.
In order to further optimize the technical scheme, the linear cylinder 6 and the rail 4 are fixedly connected with the mounting base plate 5 through set screws.
In order to further optimize the technical scheme, the positioning frame 2 is fixedly connected with the sliding block 3 through a set screw.
In order to further optimize the above technical solution, the positioning frame 2 is an integrated structure or a detachable split assembly structure.
In particular, the positioning frame 2 may be a Z-shaped supporting frame. Or as shown in fig. 1, the positioning frame 2 may be formed by assembling angle iron, a screw rod and a nut, the angle iron is fixed on the sliding block, the nut is welded and fixed on the outer side of the opening of the angle iron, the screw rod is in threaded connection with the nut and penetrates through the angle iron, and therefore fine adjustment of the supporting aperture can be performed by adjusting the extending length of the screw rod.
In order to further optimize the technical scheme, the diagonal line of the equilateral quadrilateral closed-loop mechanism is vertically and correspondingly superposed with the cross installation base line.
In order to further optimize the technical scheme, the positioning frame 2 is made of 45# or 40Cr structural steel.
The utility model discloses a theory of operation does:
the linear cylinders 6 are connected with the sliding blocks 3 through the linkage mechanism, the sliding blocks 3 at the two ends are driven to move relatively on the guide rails 4 through the relative movement of the linear cylinders 6 at the two ends, and the positioning frame 2 moves along with the sliding blocks 3. After one end locating rack 2 contacted work piece 1 earlier, drive work piece 1 and move, until both ends locating rack 2 all contacted back with work piece 1, straight line jar 6 stop motion, work piece 1 location support targets in place.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A self-centering positioning device using a linear cylinder, comprising:
a mounting substrate (5); a cross-shaped mounting base line is formed on the surface of the mounting substrate (5);
a linear cylinder (6); the number of the linear cylinders (6) is two, the two linear cylinders (6) are arranged on one base line of the crossed mounting base line, the two linear cylinders (6) are symmetrically positioned on two sides of the midpoint of the crossed mounting base line, and the telescopic ends of the two linear cylinders correspond to the telescopic ends of the crossed mounting base line;
a track (4); the number of the rails (4) is two, and the two rails (4) are arranged on the other base line of the crossed mounting base line along the length direction of the rails and symmetrically positioned on two sides of the middle point of the crossed mounting base line; the rail (4) is connected with a sliding block (3) in a sliding manner, and a positioning frame (2) is fixed on the sliding block (3);
a linkage mechanism; the linkage mechanism is connected with the telescopic end of the linear cylinder (6), and the sliding block (3) faces one end of the midpoint of the cross mounting base line to form a movable equilateral quadrilateral closed-loop mechanism.
2. The self-centering positioning device using linear cylinders according to claim 1, characterized in that the linkage comprises four joint carriers (7) and four links (8); the four joint frames (7) are respectively fixed at the telescopic end of the linear cylinder (6) and one end of the sliding block (3) facing the midpoint of the crisscross mounting base line; the ends of the four connecting rods (8) are sequentially and rotatably connected among the four joint frames (7).
3. The self-centring positioning device using linear cylinders according to claim 2, characterised in that the connecting rod (8) and the articulated frame (7) are connected by a pin (9).
4. The self-centering positioning device using the linear cylinder as claimed in claim 3, wherein the section of the joint frame (7) is U-shaped, and the end of the connecting rod (8) is embedded in the U-shaped notch of the joint frame (7).
5. The self-centering positioning device using linear cylinder according to claim 2, characterized in that the joint bracket (7) and the telescopic end of the linear cylinder (6) and the sliding block (3) are fixedly connected by a set screw.
6. The self-centering positioning device using linear cylinder according to claim 1, characterized in that the linear cylinder (6) and the rail (4) are fixedly connected with the mounting base plate (5) by a set screw.
7. The self-centering positioning device using linear cylinder according to claim 1, characterized in that the positioning frame (2) and the sliding block (3) are fixedly connected by a set screw.
8. The self-centering positioning device using a linear cylinder as claimed in claim 1, wherein the positioning frame (2) is of a one-piece structure or a detachable and split assembly structure.
9. The self-centering positioning device using linear cylinders as claimed in claim 1, wherein the diagonal of said equilateral quadrilateral closed loop mechanism is coincident with said cross-shaped mounting base line up and down correspondingly.
10. The self-centering positioning device using linear cylinder as claimed in claim 1, characterized in that the positioning frame (2) is made of 45# or 40Cr structural steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222487843.1U CN218225701U (en) | 2022-09-20 | 2022-09-20 | Self-centering positioning device using linear cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222487843.1U CN218225701U (en) | 2022-09-20 | 2022-09-20 | Self-centering positioning device using linear cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218225701U true CN218225701U (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222487843.1U Active CN218225701U (en) | 2022-09-20 | 2022-09-20 | Self-centering positioning device using linear cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218225701U (en) |
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2022
- 2022-09-20 CN CN202222487843.1U patent/CN218225701U/en active Active
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