CN203266457U - Hydraulic flat tongs - Google Patents

Abstract

The utility model discloses a pair of hydraulic flat tongs which comprises a tongs seat, a sliding seat, a fixed jaw, a movable jaw and an adjusting screw rod, wherein the fixed jaw is directly fixed on the tongs seat; the movable jaw is slidably connected with the tongs seat through the sliding seat driven to horizontally move by the adjusting screw rod; the tail end of the adjusting screw rod is connected with the piston rod of a hydraulic oil cylinder. In conclusion, the hydraulic flat tongs disclosed by the utility model provides the preset thrust used for clamping and locking a workpiece all the time in the clamping process of a gad tongs and can effectively prevent the workpiece from being loosened and reduce the phenomenon that the workpiece is damaged by being clamped, thereby enhancing the machining accuracy of the workpiece.

Description

hydraulic vise

technical field

The utility model relates to a universal clamp flat-nose pliers among machine tool accessories, in particular to a hydraulic flat-nose pliers.

technical background

A general fixture in the accessories of flat-nose pliers machine tools. There is a keyway at the bottom of the flat-nose pliers, which is directly inserted into the keyway of the machine tool table through a flat key, and then the flat-nose pliers are pressed firmly with a pressure plate. It is usually installed in machining centers, drilling machines, and milling machines. , Surface grinder press.

The structure of the flat nose pliers is generally composed of a clamp base, a sliding base, a fixed jaw, a movable jaw and an adjusting screw. , through the parallel sliding of the sliding seat relative to the clamp seat, the opening and closing of the jaw between the movable jaw and the fixed jaw is driven, and the loose blanking and clamping positioning of the workpiece and the machine tool accessories are realized.

Here, the parallel sliding of the above sliding seat is realized by manually adjusting the adjusting screw, but this manual adjustment method has a big problem. It is very unstable, and the phenomenon of fast and slow occurs, which makes the clamping force of the movable jaw and the fixed jaw unstable, and the workpiece is easily damaged due to the unbalanced clamping force and impact; on the other hand, when the workpiece is clamped Finally, the locking of the entire vise is realized by the thread self-locking of the adjusting screw, and the locking effect is relatively poor. In the process of workpiece processing, the force of the workpiece is usually relatively large and accompanied by high-frequency vibration, and it is easy to have a clamp The slack makes the workpiece loose, which seriously affects the machining accuracy of the workpiece; in addition, the manual adjustment method of the adjusting screw can only be performed for one vise at a time, which is laborious and inefficient, and cannot meet the needs of modern large-scale processing.

Utility model content

In view of the above problems, the utility model designs a hydraulic vise, which always provides a pre-thrust force for the clamping and locking of the workpiece during the clamping process of the vise, which can effectively prevent the workpiece from loosening and reduce the phenomenon of clamping the workpiece , Improve the machining accuracy of the workpiece.

In order to achieve the above object, the utility model adopts the following technical solutions:

A hydraulic flat-nose pliers, including a clamp base, a sliding base, a fixed jaw, a movable jaw and an adjusting screw, wherein the fixed jaw is directly fixed on the clamp base, and the movable jaw is driven by the adjusting screw to translate the sliding base and the adjusting screw. The clamp seat is slidingly connected, and the feature is that: the tail end of the adjusting screw is connected with the piston rod of a hydraulic oil cylinder.

Further, the cylinder body of the above-mentioned hydraulic oil cylinder is directly fixed on the clamp seat through the connecting flange.

The adjustment of the adjusting screw of the utility model is driven by the piston rod of the hydraulic oil cylinder, which can realize the uniform speed of pushing and pulling of the sliding seat, and will not affect the life of the movable jaw due to the speed, and will not cause uneven clamping force due to uneven speed. Balance can effectively reduce the damage to the workpiece, improve the parallelism and perpendicularity when the vise is clamped, and ensure the machining accuracy of the workpiece.

In addition, during the processing of the workpiece, the hydraulic cylinder is still in working condition, and its piston rod always provides a constant pre-thrust to the adjusting screw, so that the movable jaw can firmly clamp the workpiece, effectively prevent the workpiece from loosening, and ensure the processing accuracy of the workpiece .

Description of drawings

Fig. 1, the structural representation of the utility model.

Detailed ways

As shown in Figure 1, a hydraulic flat-nose pliers comprises a clamp base 1, a sliding base 2, a fixed jaw 3, a movable jaw 4 and an adjusting screw 5, wherein the fixed jaw 3 is directly fixed on the clamp base 1, and the movable jaw The port 4 is slidingly connected with the clamp base 1 through the sliding seat 2 driven by the adjusting screw 5 for translation, and the tail end of the adjusting screw 5 is connected with the piston rod 61 of a hydraulic cylinder 6 .

The cylinder body 62 of the hydraulic cylinder 6 is provided with a connecting flange 621 on the mounting end surface, and the clamp base 1 is provided with a threaded hole matched with the mounting flange 621. The cylinder body 62 is installed on the clamp base 1 by means of screws, which is convenient Cylinder 62 installation and disassembly.

The adjustment activity of the adjusting screw rod 5 of the utility model is driven by the piston rod 61 of the hydraulic oil cylinder 6, which can realize the push-pull uniform speed of the sliding seat 2 and the movable jaw 4, and will not affect the life of the movable jaw 4 due to the speed, and will not be affected at the same time. The clamping force will be unbalanced due to uneven speed, which can effectively reduce the damage to the workpiece, improve the parallelism and perpendicularity when the vise is clamped, and ensure the machining accuracy of the workpiece.

In addition, during the processing of the workpiece, the hydraulic cylinder 6 is still in the working state, and its piston rod 61 always provides a constant pre-thrust force to the adjusting screw 5, so that the movable jaw 4 can firmly clamp the workpiece, and the clamping force is stable and effective. Prevent the workpiece from loosening and ensure the machining accuracy of the workpiece. Here, in actual processing, different working hydraulic pressure and pre-thrust force can be selected according to the material size of the workpiece, so that the workpiece can obtain a stable and long-term clamping force, and there will be no loosening of the jaw due to too small clamping force, and also The workpiece will not be deformed and pinched due to excessive clamping force, and the high-frequency vibration phenomenon in the workpiece processing process can be effectively offset.

The action of the above-mentioned hydraulic vise hydraulic cylinder 6 is controlled by the controller. During processing, only one button is needed to clamp the vise of one or more machine tools. The work is labor-saving and efficient, and can meet modern large-scale processing. needs.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change or modification made to the above embodiments according to the technical principle of the utility model, Still belong to the scope of the technical solution of the utility model.

Claims (2)

1. hydraulic flat tongs, comprise clamp block, slide, regular jaw, moving jaw and adjusting screw(rod), wherein regular jaw directly is fixed on clamp block, moving jaw is slidably connected by driving slide and the clamp block of carrying out translation by adjusting screw(rod), and it is characterized in that: described adjusting screw(rod) tail end is connected with the piston rod of a hydraulic jack.

2. hydraulic flat tongs as claimed in claim 1, it is characterized in that: the cylinder body of described hydraulic jack directly is fixed on clamp block by adpting flange.

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