CN102248692A - Eight-connecting-rod mechanical press - Google Patents

Abstract

The invention relates to an eight-connecting-rod mechanical press. The mechanical press comprises a machine frame, a first crank, a second crank, a first connecting rod, a second connecting rod, an oscillating rod, a punch hammer connecting rod and a punch hammer, wherein the first crank and the second crank are connected with the machine frame through revolute pairs respectively; the first crank is connected with a servo motor, and is driven to rotate through the servo motor; the first connecting rod is connected with the first crank through a revolute pair; the second connecting rod is connected with the second crank through a revolute pair; the first connecting rod, the second connecting rod, the oscillating rod and the punch hammer connecting rod are connected with one another through a revolute pair at the same point; the oscillating rod is connected with the machine frame through a revolute pair; the tail end of the punch hammer connecting rod is connected with the punch hammer through a revolute pair; and the punch hammer is positioned in a fixed guide rail. In the mechanical press, diversified punch hammer pressure working curves can be acquired, and the problems of low flexibility and low punch forming quality of the conventional mechanical press are solved; simultaneously, the press has an extremely high force transfer property.

Description

Eight-link mechanical press

technical field

The present invention relates to non-cutting metal forming processing equipment, in particular to a mechanical press.

Background technique

In the field of metal forming processing, especially in sheet metal stamping, forming, and sheet drawing processes, hydraulic presses and mechanical presses are the two main types of processing equipment. Hydraulic presses have low production efficiency, difficult and costly hydraulic system maintenance. The traditional mechanical press cannot obtain the pressure working curve required by the user according to different processing techniques. The inherent defect of this kind of press lacks "flexibility" and hinders the further improvement of the stamping process level, so it is difficult to meet the requirements of high-quality stamping operations. In recent years, there have been mechanical presses directly driven by servo motors, such as connecting rod presses from Amino Corporation in Japan, Komatsu HF series presses in Japan, double toggle presses from Ohio State University in the United States, and presses from Qiqihar Second Machine Tool Group. The structure of this kind of press is basically the same as that of ordinary mechanical presses. Only the ordinary motor is replaced by a servo motor. By adjusting the input of the servo motor, the speed characteristics and dynamic performance of the slider can be improved, and the application field is wide.

Contents of the invention

The purpose of the present invention is to solve the problems of low working efficiency, low forming quality and poor "flexibility" in existing metal forming presses. The present invention provides an eight-link mechanical press, which is driven by a servo motor. A variety of hammer pressure working curves can be obtained to meet the requirements of high-quality stamping operations.

The technical solution of the present invention is: an eight-link mechanical press, the press includes a frame, a first crank, a second crank, a first connecting rod, a second connecting rod, a swing rod, and a hammer connecting rod and the impact hammer, the first crank and the second crank are respectively connected with the frame through the rotating pair; the first crank is connected with the servo motor, and the servo motor drives the first crank to rotate; the first connecting rod and the first crank are connected through the rotating pair The second connecting rod is connected with the second crank through a rotating pair, and the first connecting rod, the second connecting rod, the swing rod and the hammer connecting rod are connected at the same point through a rotating pair; the swing rod is connected with the machine through a rotating pair The frame is connected, the end of the hammer connecting rod is connected with the hammer through the rotating pair, and the hammer is in the fixed guide rail.

The beneficial effects of the present invention are: the present invention can obtain diversified hammer pressure working curves, which solves the problems of poor "flexibility" and low stamping quality of traditional mechanical presses; meanwhile, the presses have good force transmission characteristics.

Description of drawings

Fig. 1 is a schematic structural diagram of a specific embodiment of the present invention.

Detailed ways

The specific embodiment of the present invention shown in Fig. 1, a kind of eight-link mechanical press, described press comprises frame 1, first crank 2, second crank 4, first connecting rod 3, second Connecting rod 5, triangular pendulum 6, hammer connecting rod 7 and hammer 8, the first crank 2 and the second crank 4 are respectively connected with the frame 1 through the rotating pair; the first crank 2 is connected with the servo motor, and is controlled by The servo motor drives the first crank 2 to rotate; the first connecting rod 3 is connected with the first crank 2 through a rotating pair, the second connecting rod 5 is connected with the second crank 4 through a rotating pair, and the first connecting rod 3 and the second connecting rod The rod 5, the swing rod 6 and the hammer connecting rod 7 are connected at the same point through a rotating pair; the swing rod 6 is connected with the frame 1 through a rotating pair, and the end of the hammer connecting rod 7 is connected with the hammer 8 through a rotating pair , Punch hammer 8 is in the fixed rail.

When working, the first crank 2 is driven by the servo motor to rotate. Driven by the first crank 2, the first connecting rod 3 moves in a plane, the second crank 4 rotates in a circle, and the second connecting rod 5 moves in a plane. , the pendulum 6 swings back and forth around the frame 1, and the hammer connecting rod 7 makes complex plane movements; limit, and the hammer connecting rod 7 and the hammer 8 are hinged to each other, so the hammer 8 can only punch up and down in the guide rail.

Claims (1)

1. A kind of eight-bar servo press that contains triangular fork, described press comprises frame (1), first crank (2), second crank (4), first connecting rod (3), the first The two connecting rods (5), the triangular pendulum (6), the hammer connecting rod (7) and the hammer (8), the first crank (2) and the second crank (4) respectively rotate with the frame (1) The auxiliary phase is connected; the first crank (2) is connected with the servo motor, and the servo motor drives the first crank (2) to rotate; the first connecting rod (3) is connected with the first crank (2) through a rotating pair, and the second The connecting rod (5) is connected with the second crank (4) through a rotary pair, and the first connecting rod (3), the second connecting rod (5), the swing rod (6) and the hammer connecting rod (7) are at the same point It is connected through the rotating pair; the pendulum (6) is connected with the frame (1) through the rotating pair, and the end of the hammer connecting rod (7) is connected with the punching hammer (8) through the rotating pair, and the punching hammer (8) is in the within the fixed rail.

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