High-speed heavy-load all-electric servo numerical control bending machine with multiple working modes
A working mode, electric servo technology, applied in the field of sheet metal bending machines, can solve the problems of low power utilization, high driving motor power, and incomplete application of motor power, etc., to improve performance, smooth action, and improve power utilization. Effect
Pending Publication Date: 2019-09-27
NANJING UNIV OF POSTS & TELECOMM
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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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Embodiment 2
[0060] The structure of embodiment 2 is the same as that of embodiment 1, the difference is that the movement stroke of the screw rod 6 is smaller than the movement stroke of the eccentric wheel 8, the upper drive mechanism drives the upper slider to realize low-speed, heavy-load, and long-term movement, and the lower The driving mechanism drives the lower slider to realize high-speed, light-load, non-working stroke movement. The working condition of the bending machine is a typical variable speed and variable load condition. The fast down and return stages are high-speed, low-load and large-stroke motion stages, and the working stage is low-speed, large-load and small-stroke motion stages. Therefore the present invention adopts lower drive mechanism to drive lower slider to realize fast down and return stage, and upper drive mechanism drives upper slider to realize work progress stage.
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The invention discloses a high-speed heavy-load all-electric servo numerical control bending machine with multiple working modes. The machine comprises a frame, a lower die fixedly connected with the frame and used for bending, a main sliding block capable of moving up and down along the frame, an auxiliary sliding block slidably connected with the main sliding block and capable of sliding up and down relatively, and an upper die fixedly connected with the auxiliary sliding block and matched with the lower die for bending, wherein a main driving mechanism used for driving the main sliding block and the auxiliary sliding block to move is connected to the main sliding block, two auxiliary driving mechanisms for driving the auxiliary sliding block to move relative to the main sliding block are symmetrically connected to the left side and right side of the auxiliary sliding block, and the auxiliary driving mechanisms are also hinged to the main sliding block. The high-speed heavy-load all-electric servo numerical control bending machine is suitable for large tonnage, has the advantages of heavy load, high precision, low energy consumption, low power of a driving motor, high power utilization rate, high speed, low manufacturing cost and the like, and simultaneously utilizes the nonlinear motion characteristic of a connecting rod mechanism, the self-locking characteristic of a specific position and the self-locking characteristic of thread pair transmission.
Description
technical field [0001] The invention relates to a plate bending machine, in particular to a high-speed heavy-load all-electric servo numerical control bending machine with multiple working modes. 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 High, beca...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B21D5/02B21D5/00B21D37/12B21D37/00B21C51/00
CPCB21D5/0209B21D5/0227B21D5/004B21D37/12B21D37/00B21C51/00
Inventor 徐丰羽肖敏蒋国平
Owner NANJING UNIV OF POSTS & TELECOMM