High-speed heavy-load mechanical type all-electric servo numerical control bending machine based on combination drive

Abstract

The invention discloses a high-speed heavy-load mechanical type all-electric servo numerical control bending machine based on combination drive. The high-speed heavy-load mechanical all-electric servo numerical control bending machine comprises a machine frame, a lower die, a main sliding block, a deputy sliding block, a upper die, a main driving mechanism and deputy driving mechanisms, wherein the lower die is fixedly connected with the machine frame and used for bending, the main sliding block can move up and down along the machine frame, the deputy sliding block is in sliding connection with the main sliding block and can slide up and down relatively, the upper die is fixedly connected with the deputy sliding block and matched with the lower die for bending, the main driving mechanism is used for driving the main sliding block to move along with the deputy sliding block, and the deputy driving mechanisms used for driving the deputy sliding block to move relative to the main sliding block is symmetrically connected to the left side and the right side of the deputy sliding block. The high-speed heavy-load mechanical type all-electric servo numerical control bending machine based on the combination drive is suitable for large tonnage, and has the advantages of being heavy in load, high in precision, low in energy consumption, small in driving motor power, high in power utilization rate, fast in speed, low in manufacturing cost and the like, and meanwhile, the nonlinear motion characteristic of a connecting rod mechanism, the self-locking characteristic of the specific position and the self-locking characteristic of the screw thread pair transmission are utilized.

Description

technical field [0001] The invention relates to a plate bending machine, in particular to a high-speed heavy-duty mechanical all-electric servo numerical control bending machine based on compound drive. Background technique [0002] CNC bending machine is the most important and basic equipment in the field of sheet metal processing. Energy saving, environmental protection, high speed, high precision, digitization and intelligence are the future development trends. The driving methods of CNC bending machines include hydraulic drive and mechanical electric servo drive. At present, hydraulic drive is the main method, but mechanical electric servo is the future development trend. [0003] The advantage of hydraulic drive is large tonnage, which is easy to realize the bending processing of large format and thick plates; the disadvantages of hydraulic drive are as follows: 1. Large noise, high energy consumption, hydraulic oil leakage and environmental pollution; 2. High cost Hig...

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Problems solved by technology

The required drive motor power is very large, even in the actual use process, the motor does not use the highest peak power, resulting in the power of the motor is not fully applied, that is, the power utilization rate is low

Taking the common 35-ton electromechanical servo bending machine currently on the market as an example, its fast down speed and return speed are generally 200mm / s, and its nominal bending force is 350kN. In order to meet the requirements of the highest speed and maximum bending force at the same time, Usually need to use two 7.5kW servo motors, the conventional configuration in the current market, but in the actual work process, the actual power consumed by the two servo motors is about 1kw ~ 2kW, and the power utilization rate is very low

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