Novel servo press

Abstract

The invention relates to the technical field of forging machinery, in particular to a novel servo press. The servo press is characterized in that a rack is a press rack, two linear motors are arranged above the press rack, a workbench is arranged in the press rack, the workbench comprises an upper workbench and a lower workbench, an upper die moving assembly is arranged above the upper workbench in a vertical sliding mode, a force increasing mechanism is installed between the upper die moving assembly and the two linear motors, and a servo die cushion is installed on the lower workbench and driven by a second linear motor. The servo press has the advantages that a double force increasing effect can be achieved, the left-right balance can be dynamically adjusted, an unbalance loading problem can be solved, the control precision is higher, the structure is simple, a rotating gear and a speed reducer are omitted, so that a transmission gap is eliminated, the size structure is greatly reduced, the impact force is large, the working efficiency is high, the servo die cushion can facilitate the forming process of new materials, the whole press does not have other hydraulic oil, and the safety is greatly improved.

Description

technical field [0001] The invention relates to the technical field of forging machinery, in particular to a novel servo press. Background technique [0002] A press is a CNC forging processing equipment for forming workpieces, which is widely used in various fields, including aviation, aerospace, automobiles and home appliances. Ordinary servo presses are driven by a rotary motor. Generally, the transmission system includes a crank connecting rod or a ball screw, which converts rotary motion into linear motion and drives the slider to move up and down. The servo press has many advantages such as flexible processing, less noise, energy saving, high forming quality, and increased mold life. [0003] Comparing patent CN104029408A a kind of cylindrical linear motor driven symmetric toggle rod increasing mileage high-speed press and CN104129087A a kind of square linear motor push-down type double pendulum rod increasing mileage high-speed press, both kinds of presses are equipp...

AI Technical Summary

Problems solved by technology

[0003] Comparing patent CN104029408A a kind of cylindrical linear motor driven symmetric toggle rod increasing mileage high-speed press and CN104129087A a kind of square linear motor push-down type double pendulum rod increasing mileage high-speed press, both kinds of presses are equipped with The linear motor is used as the driving mode of the main motor. The structure of the former adopts the triangular toggle structure, and the latter adopts the structure of multi-swing rods to increase the force. Both can obtain sufficient punching force, but inevitably have sliders. The inclination of the working surface cannot be corrected, and the unbalanced load cannot be corrected. At the same time, there are also disadvantages such as the lack of the mechanical structure of the transmission system, and the disadvantage that the booster ratio is reduced.

The latter patent is a more complex transmission structure, which increases the difficulty of design, production and debugging

[0004] Jinan No. 2 Machine Tool Group CN102632124A "An Electric Servo Stretching Pad" describes a die pad of a servo press, which uses a rotary servo motor as the power source of the die pad and uses a hydraulic buffer device. The disadvantage is that the screw rod and belt As a transmission part, the wheel has a complex structure and there are safety hazards such as hydraulic oil leakage.

[0005] During the downward movement of the slider of the conventional servo press, during the collision between the upper mold and the workpiece and the lower mold, the force on the left and right parts of the slider is unbalanced. After many times of long-term accumulation, the slider itself is inclined, which will seriously affect the Forming quality, severe cases will damage the mold

In addition, when the left and right eccentric loads are serious, and when the pressure tonnages on the left and right sides differ greatly, inconsistent wear and tear on the left and right sides of the slider will occur, which will also affect the forming process of the slider.

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