CN213225901U

CN213225901U - Centering clamp

Info

Publication number: CN213225901U
Application number: CN202022182208.3U
Authority: CN
Inventors: 林立鸿
Original assignee: Liyang Dongheng Energy Technology Co ltd
Current assignee: Liyang Dongheng Energy Technology Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-05-18
Anticipated expiration: 2030-09-28

Abstract

The utility model provides a centering anchor clamps, its structure includes the positioning seat that two intervals set up, positioning seat upper end interval is equipped with two clamping pieces, at least, be equipped with a location axle between two positioning seats, it is equipped with the linkage plate to slide on the location axle, clamping piece lower extreme is equipped with the location slider, terminal surface is equipped with the location spout under the location slider, be equipped with the effect piece that the location spout was joined in marriage in the slip on the linkage plate, one of them positioning seat outer wall has the drive shaft soon, drive shaft and linkage plate adopt threaded connection, the opposite face upper portion of two clamping pieces all extends there is a spacing portion, the interval is equipped with two movable slots in the spacing portion, the inside rotation of movable slot is equipped with secondary clamping board, be equipped with the structure that carries out the secondary clamping around the work piece on the clamp splice of centering anchor clamps, can be better carry out the.

Description

Centering clamp

Technical Field

The utility model relates to a centering anchor clamps belongs to centering anchor clamps field.

Background

When an existing centering clamp is used for clamping an irregular workpiece, if the clamping end face of the irregular workpiece is of a concave-convex structure, clamping force needs to be increased by the centering clamp so as to prevent the workpiece from deviating during machining, but when the clamping force is too large, the workpiece is easily damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a centering anchor clamps to solve current centering anchor clamps when the anomalous work piece of clamping, if the clamping terminal surface of anomalous work piece is uneven structure, then need centering anchor clamps to increase the clamping dynamics, in order to avoid the work piece to produce the skew man-hour, but when the clamping dynamics was too big, caused the problem that the work piece damaged easily.

In order to achieve the above purpose, the present invention is realized by the following technical solution: a centering fixture structurally comprises two positioning seats arranged at intervals, wherein two clamping blocks are arranged at the upper ends of the positioning seats at intervals, at least one positioning shaft is arranged between the two positioning seats, a linkage plate is arranged on the positioning shaft in a sliding mode, a positioning slide block is arranged at the lower end of each clamping block, a positioning slide groove is formed in the lower end face of each positioning slide block, an action block which is matched with the positioning slide groove in a sliding mode is arranged on each linkage plate, a driving shaft is screwed on the outer wall of one positioning seat, the driving shaft is connected with the linkage plate through threads, a limiting portion extends from the upper portion of each opposite face of each clamping block, two movable grooves are arranged on the limiting portions at intervals, secondary clamping plates are rotatably arranged in the movable grooves, the positioning shafts are rotatably arranged at the centers of the secondary clamping plates, a bolt groove is formed in one end, away from the limiting portion, of each clamping block, a limiting bolt is, the spherical joint extends into the movable groove and is rotatably connected with the outer end part of the secondary clamping plate.

Furthermore, the positioning shaft is fixedly connected with the inner wall of the positioning chute.

Furthermore, one end of the driving shaft, which is far away from the positioning seat, is connected with a driving motor.

Further, the positioning sliding groove is of a diagonal structure.

The utility model has the advantages that: the clamping block of the centering clamp is provided with a structure for secondarily clamping the periphery of the workpiece, so that the irregular workpiece can be better clamped without increasing clamping force, and the workpiece is effectively prevented from being damaged.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of a centering fixture of the present invention;

FIG. 2 is a schematic view of a bottom driving structure of the clamping block and the linkage plate;

fig. 3 is a schematic top sectional view of the clamping block.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1, 2 and 3, the present invention provides a centering fixture, which has a technical solution: the structure of the positioning device comprises two positioning seats 1 which are arranged at intervals, two clamping blocks 2 are arranged at the upper ends of the positioning seats 1 at intervals, at least one positioning shaft 101 is arranged between the two positioning seats 1, a linkage plate 3 is arranged on the positioning shaft 101 in a sliding mode, a positioning slide block 4 is arranged at the lower end of each clamping block 2, a positioning slide groove 6 is arranged on the lower end face of each positioning slide block 4, an acting block 7 which is matched with the positioning slide groove 6 in a sliding mode is arranged on each linkage plate 3, a driving shaft 5 is screwed on the outer wall of one positioning seat 1, the driving shaft 5 is connected with the linkage plate 3 in a threaded mode, a limiting part 8 extends from the upper parts of the opposite faces of the two clamping blocks 2, two movable grooves 9 are arranged on the limiting part 8 at intervals, a secondary clamping plate 10 is arranged inside each movable groove 9 in a rotating mode, a positioning shaft 11 is arranged in the center of each secondary clamping, a limiting bolt 13 is screwed in the bolt groove 12, a spherical joint 14 is arranged at the end part of the limiting bolt 13, the spherical joint 14 extends into the movable groove 9 and is rotatably connected with the outer end part of the secondary clamping plate 10, the positioning shaft 11 is fixedly connected with the inner wall of the positioning sliding groove 6, one end of the driving shaft 5, far away from the positioning seat 1, is connected with a driving motor, and the positioning sliding groove 6 is of a slash structure.

For example, when clamping, a workpiece is placed between the two clamping blocks 2, the driving shaft 5 is driven to rotate manually or by a driving motor, so that the linkage plate 3 moves axially along the thread on the driving shaft 5, in the moving process, the action block 7 on the linkage plate 3 generates acting force on the positioning chute 6 of the positioning slide block 4, so that the positioning slide block 4 drives the clamping block 2 to clamp the workpiece, if the clamping end face of the workpiece is uneven and has a certain offset risk in machining, the limiting bolt 13 can be rotated, the limiting bolt 13 pushes out the outer end part of the secondary clamping plate 10 through the spherical joint 14, the secondary clamping plate 10 rotates by taking the positioning shaft 11 as the center, and the secondary clamping plates 10 on the two clamping blocks 2 respectively clamp and position the periphery of a workpiece secondarily through the extension of the outer end parts of the secondary clamping plates, so that the irregular workpiece is effectively prevented from deviating during processing.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied 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.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A centering clamp is characterized in that: the structure of the device comprises two positioning seats (1) arranged at intervals, wherein two clamping blocks (2) are arranged at the upper ends of the positioning seats (1) at intervals, at least one positioning shaft is arranged between the two positioning seats (1), a linkage plate (3) is arranged on the positioning shaft in a sliding manner, a positioning slider (4) is arranged at the lower end of each clamping block (2), a positioning chute (6) is arranged on the lower end face of each positioning slider (4), an action block (7) which is matched with the positioning chute (6) in a sliding manner is arranged on the linkage plate (3), a driving shaft (5) is screwed on the outer wall of one positioning seat (1), the driving shaft (5) is in threaded connection with the linkage plate (3), a limiting part (8) extends from the upper part of each opposite face of the two clamping blocks (2), two movable grooves (9) are arranged on the limiting part (8) at intervals, and a secondary clamping plate (10) is arranged, the center of the secondary clamping plate (10) rotates to be provided with a positioning shaft, one end, far away from the limiting part (8), of the clamping block (2) is provided with a bolt groove (12), a limiting bolt (13) is screwed in the bolt groove (12), the end part of the limiting bolt (13) is provided with a spherical joint (14), and the spherical joint (14) extends into the movable groove (9) and is rotatably connected with the outer end part of the secondary clamping plate (10).

2. A centering clip as claimed in claim 1, wherein: the positioning shaft is fixedly connected with the inner wall of the positioning chute (6).

3. A centering clip as claimed in claim 1, wherein: and one end of the driving shaft (5) far away from the positioning seat (1) is connected with a driving motor.

4. A centering clip as claimed in claim 1, wherein: the positioning sliding groove (6) is of a diagonal structure.