CN102173076A - Compound drive mechanical servo press - Google Patents

Abstract

The invention relates to a composite drive mechanical servo press, which includes a frame, a crank, a connecting rod, a servo motor, a ball screw, a slider in a slide rail, three auxiliary components, and a hammer connecting rod and the impact hammer, the crank is connected with the frame through the revolving pair; the crank is connected with the high-power fixed-speed motor; the servo motor and the slider are connected by ball screws; The connecting rod, the hammer connecting rod, and the slider in the slide rail are connected, the connecting rod and the crank are connected through a rotary pair, the end of the hammer connecting rod is connected with the punch through a rotary pair, and the punch is in the fixed guide rail. Using the combination of a high-power fixed-speed ordinary motor and a low-power servo motor, the punching speed and punching position of the hammer can be precisely controlled to solve the problem of high manufacturing costs of high-power mechanical servo presses, and the addition of three components, It can also make the pressure working curve of the ram more diversified to meet the requirements of various stamping operations.

Description

Compound drive mechanical servo press

technical field

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

Background technique

In the field of metal forming processing, 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 lacks "flexibility", and cannot obtain the pressure working curve required by the user according to different processing techniques, and it is difficult to meet the requirements of modern market product diversification, rapid change, and small batch. 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. Since this press does not use a flywheel, The energy is all provided by the servo motor during stamping. If a large-tonnage press is required, a high-power servo motor is required, but the high-power servo motor is very expensive, so the manufacturing cost of this press is very high.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned deficiencies such as low production efficiency, difficult maintenance, high cost, and poor "flexibility" existing in existing metal forming presses. The present invention provides a composite drive mechanical servo press. Driven by a high-power constant-speed motor and a low-power servo motor, the high-power constant-speed motor provides punching work, and the low-power servo motor realizes the adjustment of the hammer position and speed. The regularity of motion output can meet the requirements of various stamping operations.

The technical solution of the present invention is: a composite drive mechanical servo press, the press includes a frame, a crank, a connecting rod, a servo motor, a ball screw, a slider in a slide rail, three auxiliary components, The connecting rod of the hammer and the hammer, the crank and the frame are connected through a rotating pair; the crank is connected with a high-power fixed-speed motor, and the high-power fixed-speed motor drives the crank to rotate; the small-power servo motor and the slider pass through The ball screw is connected, the rotation of the servo motor drives the ball screw to rotate, and then the slider fixed on the ball screw nut moves; the three nodes of the three secondary components are connected with the connecting rod, the hammer connecting rod, and the The slider in the rail is connected, the connecting rod is connected with the crank through the rotary pair, the end of the hammer connecting rod is connected with the hammer through the rotary pair, and the punch is in the fixed guide rail.

The beneficial effects of the present invention are: the present invention utilizes a high-power fixed-speed ordinary motor and a low-power servo motor to accurately control the punching speed and punching position of the hammer, and solve the problem of high manufacturing cost of a high-power mechanical servo press. Moreover, the addition of three pairs of components can make the pressure working curve of the hammer more diversified, and complete the processes of blanking, blanking, bending, forming, drawing and fine pressing.

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 as shown in Figure 1, a kind of composite drive mechanical servo press, described press comprises frame 1, crank 2, connecting rod 3, servomotor 4, ball screw 5, in The slider 6, the three auxiliary components 7, the hammer connecting rod 8 and the hammer 9 in the slide rail, the crank 2 and the frame 1 are connected through a rotating pair; the crank 2 is connected with a high-power fixed-speed motor, and the large The power constant speed motor drives the crank 2 to rotate; the small power servo motor 4 and the slider 6 are connected through the ball screw 5, the rotation of the servo motor 4 drives the ball screw 5 to rotate, and then the nut fixed on the ball screw 5 The slider 6 on the top moves; the three nodes of the three auxiliary components 7 are respectively connected with the connecting rod 3, the hammer connecting rod 8, and the slider 6 in the slide rail, and the connecting rod 3 and the crank 2 are connected through a rotating pair, and the punch The end of the hammer connecting rod 8 is connected with the hammer 9 through the rotating pair, and the hammer 9 is in the fixed guide rail.

When working, the crank 2 rotates under the drive of a high-power fixed-speed motor to provide the main kinetic energy for the press, and the ball screw pair 5 converts the rotary motion of the servo motor 4 into a linear motion, thereby driving the slider 6 to start The movement inside the slide rail realizes the adjustment of the position and speed of the hammer 9. Under the action of the joint movement of the crank 2 and the slider 6, the connecting rod 3 and the three secondary components 7 start to move according to a relatively complicated trajectory. During this process, the hammer 9 also begins to move under the effect of ram connecting rod 8, owing to be subjected to the horizontal direction limit of guide rail, and ram connecting rod 8 and ram 9 are mutually hinged again, so ram 9 can only punch up and down in the guide rail.

Claims (1)

1. A composite drive mechanical servo press, characterized in that: said press comprises frame (1), crank (2), connecting rod (3), servo motor (4), ball screw (5) ), the slide block (6) in the slide rail, three sub-members (7), the hammer connecting rod (8) and the hammer (9), the crank (2) is connected with the frame (1) through the rotating pair; The crank (2) is connected with a high-power constant-speed motor, and the high-power constant-speed motor drives the crank (2) to rotate; the small-power servo motor (4) and the slider (6) are connected by a ball screw (5) connected with each other, the rotation of the servo motor (4) drives the ball screw (5) to rotate, and then the slider (6) fixed on the nut of the ball screw (5) moves; the three nodes of the three secondary components (7) They are respectively connected with the connecting rod (3), the hammer connecting rod (8) and the slide block (6) in the slide rail, the connecting rod (3) is connected with the crank (2) through a rotating pair, and the hammer connecting rod (8 ) end is connected with the punch hammer (9) through the rotary pair, and the punch hammer (9) is in the fixed guide rail.

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