CN104625791A - Hydraulic power clamp - Google Patents

Abstract

The invention relates to the technical field of clamping tools for numerically controlled lathes, in particular to a hydraulic power clamp. A curved plate is provided on one side of the mounting seat, and a replaceable There are two supporting blocks parallel to each other. There are several bolt fixing holes on the bent plate between the two supporting blocks, and positioning pins are inserted in two of the bolt fixing holes; Hinged seat, a connecting arm is hinged on the hinged seat, and the other end of the connecting arm is hinged with an extrusion block that cooperates with the two support blocks to clamp the workpiece to be processed. The mounting seat is located between the hinged seat and the bending plate. A guide sleeve is slidably provided in the guide hole, and a fixed bracket is fixedly arranged on the guide sleeve, and the middle part of the connecting arm is connected with the fixed bracket through a connecting device. The advantages are: the stability of processing can be guaranteed, fast clamping is possible, and the accuracy of clamping is also very high, so that the processing efficiency and precision are also improved.

Description

Hydraulic Power Fixtures

technical field

The invention relates to the technical field of clamping tools for numerically controlled lathes, in particular to a hydraulic power clamp.

Background technique

At present, the fixtures commonly used for clamping cuboid parts and irregularly shaped parts on CNC lathes are mostly four-jaw chucks, faceplates and bent plates. The structure is relatively simple, which has become a common recognition in the industry. This clamping method first needs to align the parts through the tedious dial gauge process, and then press it with a pressure plate, and then perform drilling, turning, tapping and other processing content. For single piece or small batch production, this clamping method is commonly used. The alignment is cumbersome, the clamping is not reliable, the rotating centrifugal force is large, and the efficiency of loading, unloading and aligning parts is low. In the process of drilling, turning, tapping, etc., the positioning is not reliable, and the parts may swing or rotate in the direction of rotation of the drilling or tapping, which will affect the drilling or tapping, and generally lead to a defective rate of processing. High, it may even cause the drill bit to be interrupted or pulled crookedly. In the high-speed machining environment, it is easy to cause damage to the CNC lathe spindle and other components, which will bring huge economic losses to the enterprise. Usually, it takes time and energy to clamp and disassemble the processed parts. It is necessary to manually loosen the screws of the pressure plate and disassemble the clamp, which makes the work efficiency very low. For plate parts of different sizes, it is necessary to customize different mounting seats and pressure plates, which increases the economic expenditure of the enterprise, and the waste of materials is also large. At the same time, the accuracy is extremely low, and the error of each plate part when processing the plate parts Extremely high.

Contents of the invention

In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a hydraulic power that can ensure the stability of processing, can quickly clamp, and the accuracy of clamping is also very high, so that the processing efficiency and precision are also improved. fixture.

To achieve the above object, the present invention provides the following technical solutions:

A hydraulic power fixture, comprising a mounting seat, one side of the mounting seat is provided with a bent plate, and two replaceable support blocks parallel to each other are provided on the side of the curved plate perpendicular to the mounting seat, and the two supporting blocks A number of bolt fixing holes are provided on the bent plate between the blocks, and positioning pins are inserted in two of the bolt fixing holes; a hinge seat is fixed on the side opposite to the bend plate on the mounting seat, and a hinge seat is hinged on the hinge seat. Connecting arm, the other end of the connecting arm is hinged with an extruding block that cooperates with the two supporting blocks to clamp the workpiece to be processed. The mounting seat is provided with a guide hole between the hinged seat and the bending plate, and slides in the guide hole. A guide shaft driven by a power device is provided, and a fixed bracket is fixed on the guide shaft, and the middle part of the connecting arm is connected with the fixed bracket through a connecting device.

The present invention is further provided that: the middle part of the connecting arm is connected to the fixed bracket through the connecting device. The specific structure is: a hinged arm is hinged on the fixed bracket, and the other end of the hinged arm is hinged to the middle part of the connecting arm.

The present invention is further set as: the specific structure that the middle part of the connecting arm is connected with the fixed bracket through the connecting device is: the middle part of the connecting arm is provided with a bar-shaped hole along the axial direction of the connecting arm, and the end of the fixed bracket is provided with a The connecting fork of the hinge shaft is hinged with the connecting arm through the bar hole through the hinge shaft.

The present invention is further configured as follows: the mounting base is respectively provided with counterweights on both sides of the hinged base.

The present invention is further configured as: the two supporting blocks are fastened and installed on the bent plate by screws.

By adopting the above technical scheme, the technical effect achieved by the present invention is: by setting the support block on the mounting seat, the extrusion block driven by the power device matches the support block to cooperate and clamp the plate parts placed on the two support blocks , plus the two positioning pins set, the fixture can form a good positioning and clamping mode with two pins on one side when clamping, which can not only ensure the stability of processing, but also can quickly clamp and clamp and position The accuracy is also very high, which greatly improves the processing efficiency and precision, and the finished product rate of the processed products is also extremely high, and when clamping and disassembling the plate parts, only the plate parts need to be manually placed on the support block of the bent plate , control the power unit to drive the guide shaft to move, so that the crank slider movement is formed between the fixed bracket of the guide shaft and the connecting arm, driving the extrusion fast and the support block to press the plate, and the clamping and dismounting effect is high, suitable for various sizes. Plate parts reduce the unnecessary economic expenditure of manufacturers.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.

FIG. 2 is a schematic perspective view of the three-dimensional structure of the present invention from another angle.

Fig. 3 is a schematic side view of the structure of the present invention.

Fig. 4 is a schematic diagram of a three-dimensional structure of another angle of the present invention.

Detailed ways

As shown in Figures 1 to 4, it is a hydraulic power clamp disclosed by the present invention. A curved plate 11 is provided on one side of the mounting base 10, and a curved plate 11 is provided at intervals on the side perpendicular to the mounting base 10. Two mutually parallel supporting blocks 120 are replaced, and the supporting blocks 120 are fixed on the bent plate 11 by means of screw fixing. Of course, they can also be fixed by welding, or the positioning is set at the position where the supporting blocks 120 are installed on the bent plate. Groove or positioning hole, on the opposite surface of support block 120, be provided with the positioning hole or positioning groove that matches with positioning groove or positioning hole and fix, but for stability, the preferred way of screw fixing, support block 120 replaceable setting , mainly to choose different support blocks for the convenience of adapting to different workpieces to be processed. A number of bolt fixing holes 121 are provided on the bent plate 11 between the two supporting blocks 120, and positioning pins 12 are respectively inserted in the two bolt fixing holes 121. Holes 121 are used to install the positioning pin 12; the side opposite to the curved plate 11 on the mounting seat 10 is fixed with a hinged seat 13, and the mounting seat 10 is respectively provided with counterweights 19 on both sides of the hinged seat 13, and the setting of the counterweights It is convenient for the stability of the whole equipment during the working process after clamping the plate parts. The connecting arm 14 is hinged on the hinged seat 13, and the other end of the connecting arm 14 is hinged to cooperate with the two support blocks 120 to be clamped to be processed. The extruding block 15 of the piece, the mounting seat 10 is located between the hinged seat 13 and the bending plate 11 and is provided with a guide hole 20, and a guide shaft 16 driven by a power device is slid in the guide hole 20, and the guide shaft 16 is fixed A fixed bracket 17 is provided. In general, the guide shaft is driven by the power device so that the guide shaft can be axially displaced along the guide hole, so that the fixed bracket also moves along with the displacement, and the connecting arm is further driven to move along the hinge axis of the hinge seat. Rotate, and then play to cooperate with the clamping groove to clamp the sheet material. The middle part of the connecting arm 14 is connected with the fixed bracket 17 through a connecting device to form a crank slider clamping mechanism. Connect the middle of the arm 14. Certainly also can adopt the middle part of connecting arm 14 to be provided with bar hole along the axial direction of connecting arm 14, the end of fixed support 17 is provided with the connecting fork that has hinge shaft, and connecting fork passes bar hole and connects by hinge shaft. The arm 14 is hinged. It is also possible to adopt the middle part of the connecting arm 14 to be provided with a bar-shaped groove on one side near the fixed bracket 17, and to set up sliding grooves on two opposite long side walls of the bar-shaped groove, and the end of the fixed bracket can extend to the bar-shaped groove. In the groove, and both sides of the end of the fixed bracket are respectively provided with sliding shafts that can slide in the sliding groove. In this embodiment, the power device is generally a hydraulic cylinder, an air cylinder, an oil cylinder, etc., which can provide power to make the guide shaft slide and position in the guide hole.

The foregoing embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made according to the structures, shapes and principles of the present invention shall be covered by the protection of the present invention. within range.

Claims (5)

1. A hydraulic power fixture, comprising a mounting seat, one side of the mounting seat is provided with a bent plate, and it is characterized in that: two replaceable parallel plates are arranged at intervals on the side of the curved plate perpendicular to the mounting seat There are a number of bolt fixing holes on the bent plate between the two supporting blocks, and positioning pins are respectively inserted in the two bolt fixing holes; the side of the mounting seat opposite to the bent plate is fixed with a hinge A connecting arm is hinged on the hinged seat, and the other end of the connecting arm is hinged with an extrusion block that cooperates with the two supporting blocks and can clamp the workpiece to be processed. The mounting seat is located between the hinged seat and the curved plate. In the guide hole, a guide sleeve driven by a power device is slidably provided in the guide hole, and a fixed bracket is fixedly arranged on the guide sleeve, and the middle part of the connecting arm is connected with the fixed bracket through a connecting device. 2. The hydraulic power clamp according to claim 1, characterized in that: the specific structure that the middle part of the connecting arm is connected to the fixed bracket through a connecting device is: a hinged arm is hinged on the fixed bracket, and the other end of the hinged arm is hinged in the middle of the connecting arm. 3. The hydraulic power clamp according to claim 1, characterized in that: the specific structure in which the middle part of the connecting arm is connected to the fixed bracket through a connecting device is: the middle part of the connecting arm is provided with a bar-shaped joint along the axial direction of the connecting arm The end of the fixed bracket is provided with a connecting fork with a hinge shaft, and the connecting fork passes through the strip hole and is hinged with the connecting arm through the hinge shaft. 4. The hydraulic power clamp according to claim 1, characterized in that: the mounting base is respectively provided with counterweights on both sides of the hinged base. 5. The hydraulic power clamp according to any one of claims 1-4, characterized in that: the two supporting blocks are fastened on the bent plate by screws.