CN216504477U

CN216504477U - Lead screw limiting and fixing device for flat tongs

Info

Publication number: CN216504477U
Application number: CN202123324672.2U
Authority: CN
Inventors: 贾均红; 杨力嘉; 马凯坤; 常文卓
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-05-13
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a lead screw limiting and fixing device for flat tongs, which belongs to the field of mechanical equipment and comprises a limiting mechanism, a fixed top plate, a chain and a movable tong body chain fixing device, wherein the fixed top plate is fixed on the fixed top plate; the fixed top plate is arranged at one end of a movable clamp body of a fixed bottom plate of the flat-nose pliers, the limiting mechanism is arranged below the fixed top plate and the fixed clamp body and is meshed with the chain, the movable clamp body chain fixing device is arranged below the movable clamp body of the flat-nose pliers, and the chain penetrates through the clamp body chain fixing device and is arranged below the fixed bottom plate; when a workpiece is clamped, the movable caliper body drives the chain to rotate through the movable caliper body chain fixing device, when the workpiece is machined, the chain is limited by the limiting mechanism, the device is in a locking state, and force is applied to the movable caliper body through the chain and the movable caliper body chain fixing device, so that the phenomenon that the lead screw moves backwards after the workpiece is clamped by the movable caliper body is avoided, and the machining precision of the workpiece is improved; and the device has compact and simple structure and strong applicability.

Description

Lead screw limiting and fixing device for flat tongs

Technical Field

The utility model belongs to the field of mechanical equipment, and particularly relates to a lead screw limiting and fixing device for flat tongs.

Background

Flat-nose pliers are machine tool clamps with two parallel clamping surfaces. The main purpose is to keep the parallelism, verticality and other form and position tolerance of the workpiece by two working faces, thereby ensuring the processing precision of the workpiece.

In the prior art, under the interaction of a workpiece and a clamp body, after a screw rod is rotated to perform clamping operation, the screw rod moves backwards due to the fact that the screw rod is loosened, and the machining precision of the workpiece is remarkably reduced under some special conditions. Therefore, it is necessary to design a lead screw limit fixing device for flat tongs.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a lead screw limiting and fixing device for flat tongs, so as to solve the problem that the lead screw moves backwards after a workpiece and a tong body are fastened in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme to realize the purpose:

the utility model discloses a lead screw limiting and fixing device for flat tongs, which comprises: the limiting mechanism, the fixed top plate, the chain and the movable caliper body chain fixing device;

the fixed top plate is arranged at one end of a movable clamp body of a fixed bottom plate of the flat-nose clamp, the limiting mechanism is arranged below the fixed top plate and the fixed clamp body and meshed with the chain, the movable clamp body chain fixing device is arranged below the movable clamp body of the flat-nose clamp, and the chain penetrates through the clamp body chain fixing device and is arranged below the fixed bottom plate.

Preferably, the limiting mechanism comprises: a limit gear and a chain transmission gear; the chain conveying gear is arranged below the fixed top plate and the fixed clamp body respectively, the limiting gear is located on the chain conveying gear below the fixed top plate, and the chain is meshed with the chain conveying gear.

Preferably, the chain transmission gear is fixed below the fixed top plate and the fixed jaw body through a chain transmission gear fixing device.

Preferably, a hole through which the screw rod can pass is formed in the fixed top plate.

Preferably, the clamp body chain fixing device is welded below the movable clamp body.

Preferably, the fixed top plate is welded at one end of the movable clamp body of the fixed bottom plate of the flat-nose clamp.

Preferably, the chain moves with the lead screw when clamping the workpiece.

Preferably, when the workpiece is processed, the limiting chain of the limiting gear is in a locking state.

Compared with the prior art, the utility model has the following beneficial effects:

according to the lead screw limiting and fixing device for the flat tongs, when a workpiece is clamped, the movable tong body drives the chain to run through the movable tong body chain fixing device, when the workpiece is machined, the chain is limited by the limiting mechanism, so that the device is in a locking state, force is applied to the movable tong body through the chain and the movable tong body chain fixing device, the lead screw cannot move backwards after the workpiece is clamped, and the workpiece machining precision is improved; and the device has compact and simple structure and strong applicability.

Furthermore, the chain is limited by the limiting gear and the chain transmission gear, so that the chain is in a locking state after the workpiece is clamped, and then the movable vice body of the flat tongs is locked, thereby being beneficial to preventing the screw rod from moving backwards and further being beneficial to improving the machining precision of the workpiece.

Furthermore, the chain conveying gear is fixed below the fixed top plate and the fixed clamp body through the chain conveying gear fixing device, so that the lead screw can move to clamp a workpiece, and the machining precision is guaranteed.

Furthermore, a hole through which the lead screw can pass is formed in the fixed top plate, so that stable movement of the lead screw is facilitated.

Furthermore, the clamp body chain fixing device is welded below the movable clamp body, so that the connecting mode is simple and the mechanical property is good.

Drawings

FIG. 1 is a schematic view of the overall structure of a flat-nose pliers with a limiting device according to the present invention;

FIG. 2 is a schematic view of a lead screw limiting device of the present invention;

FIG. 3 is a schematic view of a sprocket of the lead screw limiting device of the present invention;

fig. 4 is a schematic view of the overall structure of the flat-nose pliers of the present invention.

Wherein: 1-a rocking handle; 2-a lead screw; 3-a limit gear; 4-chain transmission gear; 5-fixing the top plate; 6-fixing the bottom plate; 7-a chain; 8-a movable clamp body chain fixing device; 9-movable clamp body; 10-fixing the clamp body; 11-chain transfer gear fixing means.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The utility model is described in further detail below with reference to the accompanying drawings:

referring to fig. 1-4, the lead screw limiting and fixing device for flat tongs disclosed by the utility model comprises a flat tongs main body, a rocking handle 1, a movable tongs body 9, a fixed tongs body 10 and a fixed bottom plate 6, wherein the rocking handle 1 is arranged at the front end of the lead screw 2, the movable tongs body 9 is arranged at the rear end of the lead screw 2, and the lower part of the flat tongs is in a convex shape.

The spacing fixing device of lead screw includes: limiting gear 3, chain conveying gear 4, fixed roof 5, the chain 7, activity pincers body chain fixing device 8 and chain conveying gear fixing device 11, fixed roof 5 sets up the 8 one ends of activity pincers bodies at the fixed baseplate 6 of flat-nose pliers, activity pincers body chain fixing device 8 sets up in the activity pincers body 9 below of flat-nose pliers, chain 7 passes pincers body chain fixing device 8 and sets up in fixed baseplate 6 below, chain conveying gear 4 is located fixed roof 5 respectively and fixes pincers 10 below and the meshing of chain 7, limiting gear 3 is located chain conveying gear 4 under fixed roof 5, chain conveying gear fixing device 11 is located by chain conveying gear 4.

Further, a fixed bottom plate 6 of the flat tongs is connected with a fixed tong body 6 by welding.

According to the lead screw limiting and fixing device for the flat tongs, the middle transmission part of the lead screw 2 is designed into threads, a workpiece is clamped in the torque transmission process, and the force can be ensured to enable the workpiece to have no clamping mark. Be provided with stop gear 3, it can make lead screw 2 carry out the tight operation back of clamp, can not cause lead screw 2 backward movement, makes the work piece precision of processing higher. The device is more stable in the use process and has strong applicability.

The utility model has convenient operation and the specific working process is as follows: the flat tongs screw rod limiting and fixing device is arranged below a flat tongs, a workpiece is placed in front of a fixed tong body 10, a rocking handle 1 is rotated to enable a screw rod 2 to move back and forth, a chain 7 below the rocking handle operates to drive a movable tong body 9 to move back and forth to clamp the workpiece, when the fixed tong body 10 and the movable tong body 9 clamp the workpiece, the screw rod 2 stops rotating, a limiting gear 3 below a fixed top plate 5 of the flat tongs limits the operation of the chain 7 at the moment, the device is in a locking state, and the screw rod 2 cannot move back due to the fact that the screw rod 2 is loosened under the interaction of the workpiece and the tong body, so that the machining precision of the workpiece is guaranteed.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims

1. The utility model provides a spacing fixing device of lead screw for flat-nose pliers which characterized in that includes: the device comprises a limiting mechanism, a fixed top plate (5), a chain (7) and a movable clamp body chain fixing device (8);

the fixed top plate (5) is arranged at one end of a movable clamp body (9) of a fixed bottom plate (6) of the flat-nose pliers, the limiting mechanism is arranged below the fixed top plate (5) and the fixed clamp body (10) and meshed with a chain (7), a movable clamp body chain fixing device (8) is arranged below the movable clamp body (9) of the flat-nose pliers, and the chain (7) penetrates through the clamp body chain fixing device (8) and is arranged below the fixed bottom plate (6).

2. The lead screw limiting fixture for flat-nose pliers of claim 1 wherein the limiting mechanism comprises: a limit gear (3) and a chain transmission gear (4); the chain conveying gear (4) is respectively arranged below the fixed top plate (5) and the fixed caliper body (10), the limiting gear (3) is positioned on the chain conveying gear (4) below the fixed top plate (5), and the chain (7) is meshed with the chain conveying gear (4).

3. Lead screw limit fixing device for flat nose pliers according to claim 2, characterized in that the chain transfer gear (4) is fixed below the fixed top plate (5) and the fixed pliers body (10) by a chain transfer gear fixing device (11).

4. The lead screw limiting and fixing device for flat-nose pliers according to claim 1, wherein the fixing top plate (5) is provided with a hole through which the lead screw (2) can pass.

5. Lead screw limit fixing device for flat nose pliers according to claim 1, characterized in that the pliers body chain fixing device (8) is welded under the movable pliers body (9).

6. The lead screw limiting and fixing device for flat-nose pliers as claimed in claim 1, characterized in that the fixed top plate (5) is welded at one end of the movable pliers body (9) of the fixed bottom plate (6) of the flat-nose pliers.

7. Lead screw limit fixing device for flat tongs according to claim 1, characterized in that the chain (7) moves with the lead screw (2) when clamping the workpiece.

8. A lead screw limit fixing device for flat tongs according to claim 1, characterized in that the limit gear (3) and the limit chain (7) are locked when processing the workpiece.