CN216299096U

CN216299096U - Self-centering reinforcement type clamping mechanism

Info

Publication number: CN216299096U
Application number: CN202123046306.5U
Authority: CN
Inventors: 贺勇; 张会龙; 刘忠勇; 王艳妮; 周明宇; 刘志家; 王园
Original assignee: Qinhuangdao Qier Cnc Machine Tool Co ltd
Current assignee: Qinhuangdao Qier Cnc Machine Tool Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-04-15
Anticipated expiration: 2031-12-07

Abstract

The utility model relates to the technical field of clamping mechanisms, in particular to a self-centering reinforcement type clamping mechanism which comprises a clamp seat, a cylinder, a connecting rod, a swing arm, a locking shaft and a swing head, wherein the upper end and the lower end of the locking shaft are respectively provided with a plug; the cylinder is installed to one side of anchor clamps seat, the yaw is installed to the piston rod head of cylinder, the front end of yaw sets up two vertical dead levers, the one end of two connecting rods rotates with two dead levers respectively and is connected, the other end is articulated with the one end of two swing arms respectively, two swing arms are bent shape, the other end of two swing arms is overlapped from top to bottom and rotates the cover simultaneously and establish the outside at the locking axle, the middle part intercrossing of two swing arms is and the suit is epaxial at the round pin simultaneously, the round pin axle is fixed on the anchor clamps seat.

Description

Self-centering reinforcement type clamping mechanism

Technical Field

The utility model relates to the technical field of clamping mechanisms, in particular to a self-centering reinforcement type clamping mechanism.

Background

Complicated work piece needs different clamping methods to press from both sides tightly between different processes, needs our frequent change anchor clamps and frock, makes machining efficiency reduce and the while is repeatedly clamped also can lead to the decline of precision like this.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a self-centering reinforcement type clamping mechanism which obviously improves and controls the relative position precision of workpieces relative to a tool, is convenient to process or assemble and use, different workpieces can be positioned through a pre-designed positioning structure, the complex workload of repeated clamping and the precision error generated by the repeated clamping are avoided, the operation steps are reduced, and the efficiency and the precision are improved.

In order to realize the purpose, the utility model is realized by adopting the following technical scheme:

the utility model discloses a self-centering reinforcement type clamping mechanism, which comprises a clamp seat, a cylinder, a connecting rod, a swing arm, a locking shaft and a swing head, wherein the upper end and the lower end of the locking shaft are respectively provided with a plug; the cylinder is installed to one side of anchor clamps seat, and the yaw is installed to the piston rod head of cylinder, and the front end of yaw sets up two vertical dead levers, and the one end of two connecting rods rotates with two dead levers respectively to be connected, and the other end is articulated with the one end of two swing arms respectively, and two swing arms are bent shape, and the overlap is established in the outside of locking axle simultaneously to the other end of two swing arms from top to bottom and rotate the cover simultaneously, and the middle part intercrossing of two swing arms is and the suit is epaxial at the round pin simultaneously, the round pin axle is fixed on the anchor clamps seat.

In a possible technical scheme, side top springs are respectively arranged on two sides of the end portions of the clamp seat, wherein the end portions of the two swing arms are overlapped up and down, and the edges of the end portions of the two swing arms, which are overlapped up and down and are positioned on the outer sides, respectively abut against the side top springs.

In a possible technical scheme, the locking shaft main body is conical, the two plugs are both in a round cake shape, and the diameter of the upper plug is larger than that of the lower plug.

Compared with the prior art, the utility model has the beneficial effects that: clamping action stretches out one set of connecting rod of drive through the cylinder, drive two swing arms, drive and press from both sides tight locking shaft through the auto-lock angle, the clamping shaft is through guiding orientation and dispersion atress, when loosening, the cylinder withdrawal, the change of connecting rod auto-lock angle, the locking shaft is loosened to the centre gripping swing arm, different work pieces all can carry out the clamping action through different specification locking shafts, and pinpoint through the toper face, avoid the loaded down with trivial details work load of repeated clamping and the precision error that produces, show the relative position precision of promotion control work piece between for the frock, be convenient for processing or assembly use, so that reduce operating procedure, the efficiency is improved and the precision.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic bottom view of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 2 taken along line A-A;

FIG. 4 is a schematic elevation view of the present invention;

FIG. 5 is a schematic view of the structure of FIG. 4 along the line B-B;

FIG. 6 is a schematic view of the structure of FIG. 4 in the direction C-C;

FIG. 7 is an enlarged partial view of section E of FIG. 6;

FIG. 8 is a schematic longitudinal cross-sectional perspective view of the present invention;

reference numerals: 1-clamp seat, 2-cylinder, 3-connecting rod, 4-side top spring, 5-swing arm, 6-locking shaft and 7-swing head.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1 and 2, the self-centering force-increasing clamping mechanism of the embodiment of the utility model comprises a clamp seat 1, a cylinder 2, a connecting rod 3, a swing arm 5, a locking shaft 6 and a swing head 7, wherein plugs are respectively arranged at the upper end and the lower end of the locking shaft 6, the clamp seat 1 is in a flat bucket shape, a mounting hole is vertically arranged on the clamp seat 1 in a penetrating manner, the locking shaft 6 is movably sleeved in the mounting hole, and as shown in fig. 4, the two plugs are respectively arranged at the upper side and the lower side of the mounting hole; the cylinder 2 is installed to the downside of anchor clamps seat 1, the piston rod of cylinder 2 is parallel with the bottom of anchor clamps seat 1, yaw 7 is installed to the piston rod head of cylinder 2, the front end of yaw 7 sets up two vertical dead levers, the one end of two connecting rods 3 rotates with two dead levers respectively and is connected, yaw 7 is the switching pivot between cylinder 2 and the connecting rod 3, the connecting rod 3 other end is articulated with the one end of two swing arms 5 respectively, two swing arms 5 are bent shape, the overlap is overlapped and rotates the cover simultaneously and establish the outside at locking shaft 6 about the other end of two swing arms 5, the middle part intercrossing of two swing arms 5 is and the suit is epaxial at the round pin simultaneously, the round pin axle is fixed on anchor clamps seat 1.

In an initial state, a piston rod of the air cylinder 2 is retracted, the connecting rod 3 drives the swing arms 5, the swing arms 5 are opened around the pin shafts, the clamping openings of the locking shafts 6 are opened by the two swing arms 5, and the tool is in a state to be installed; the workpiece is arranged at the upper end of the locking shaft 6, the initial state of the upper plug joint surface of the locking shaft 6 is not contacted, after the locking shaft 6 is guided to the bottom, the shaft surface of the locking shaft 6 is contacted and positioned, a signal is fed back at the moment, the air cylinder 2 reverses to push out the piston rod, the piston rod pushes the swing head 7 to swing towards the front side, the two fixing rods drive one end of the connecting rod 3 to move forwards, the hinged end parts of the connecting rod 3 and the swing arms 5 move towards the rear side, the angle between the two swing arms 5 is reduced, and the clamping opening of the locking shaft 6 is reduced. The self-locking effect is formed by the attachment between the lower plug and the swing arm 5, the swing arm 5 drives the locking shaft 6 to be locked to the bottom, after the locking shaft is in place, the cylinder 2 is locked, and the locking shaft 6 is self-locked through a self-locking angle; different workpieces can be clamped by the locking shafts 6 with different specifications and are accurately positioned by the shaft surfaces; preferably, as shown in fig. 7, when in the locking state, the angle between the locking shaft 6 and the two contact surfaces of the swing arm 5 is 5 °, so as to achieve the self-locking effect; in this state, as shown in fig. 5, the included angle between the two connecting rods 3 and the limit state of a straight line between the two connecting rods is 4 °, so that the stability and controllability of the locking state are ensured.

In the embodiment, the two sides of the end parts of the clamp seat 1, which are overlapped up and down, of the two swing arms 5 are respectively provided with the side top spring 4, specifically, the two sides of the lower plug of the clamp seat 1, which are positioned on the locking shaft 6, are respectively fixed with the positioning part, the side top springs 4 are connected to the inner side of the positioning part, the edges of the outer sides of the end parts of the two swing arms 5, which are overlapped up and down, are respectively abutted against the side top springs 4, and the side top springs assist in locking, so that the locking pressure is promoted to be kept stable and is not influenced by vibration; preferably, the side top spring 4 is pressure adjustable to ensure a locked state.

Preferably, as shown in fig. 3, 6, and 8, the main body of the locking shaft 6 is conical, both the two plugs are in a circular cake shape, the diameter of the upper plug is larger than that of the lower plug, the locking shaft 6 can be suspended in the mounting hole of the fixture seat 1 through the diameter change of the conical shaft body, the locking shaft 6 is guided and positioned through the conical shaft surface and dispersed in stress, and different workpieces can be clamped through the locking shafts 6 of different specifications and accurately positioned through the conical surface.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A self-centering reinforcement type clamping mechanism is characterized by comprising a clamp seat (1), a cylinder (2), a connecting rod (3), a swing arm (5), a locking shaft (6) and a swing head (7), wherein plugs are respectively arranged at the upper end and the lower end of the locking shaft (6), an installation hole is formed in the clamp seat (1), the locking shaft (6) is movably sleeved in the installation hole, and the two plugs are respectively arranged at the upper side and the lower side of the installation hole; cylinder (2) are installed to one side of anchor clamps seat (1), yaw (7) are installed to the piston rod head of cylinder (2), the front end of yaw (7) sets up two vertical dead levers, the one end of two connecting rods (3) rotates with two dead levers respectively and is connected, the other end is articulated with the one end of two swing arms (5) respectively, two swing arms (5) are bent shape, overlap and rotate simultaneously about the other end of two swing arms (5) and establish the outside at locking shaft (6), the middle part intercrossing of two swing arms (5) and suit are epaxial at the round pin simultaneously, the round pin axle is fixed on anchor clamps seat (1).

2. The self-centering force-increasing type clamping mechanism according to claim 1, wherein side top springs (4) are respectively provided on the clamp base (1) on both sides of the end portions of the two swing arms (5) which overlap up and down, and the edges of the end portions of the two swing arms (5) which overlap up and down, which are located on the outer sides, respectively abut against the side top springs (4).

3. The self-centering and force-increasing type clamping mechanism according to claim 2, wherein the main body of the locking shaft (6) is conical, both of the plugs are round pie-shaped, and the diameter of the upper plug is larger than that of the lower plug.