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Three-degree-of-freedom crank connecting rod mechanical all-electric servo numerical control plate material bending machine

A crank-connecting-rod, mechanical technology, applied in the field of sheet metal bending machines, can solve the problems of low power utilization rate, incomplete application of motor power, and high power of the drive motor, so as to improve performance, achieve high-speed heavy-duty, safety high sex effect

Pending Publication Date: 2019-09-27
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Three-degree-of-freedom crank connecting rod mechanical all-electric servo numerical control plate material bending machine
  • Three-degree-of-freedom crank connecting rod mechanical all-electric servo numerical control plate material bending machine
  • Three-degree-of-freedom crank connecting rod mechanical all-electric servo numerical control plate material bending machine

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Effect test

Embodiment 1

[0045] Such as image 3 , Figure 4 with Figure 5 As shown, a three-degree-of-freedom crank-link mechanical all-electric servo numerical control sheet metal bending machine of the present invention includes a frame 1 , an upper slider 2 , a lower slider 3 , an upper mold 4 and a lower mold 5 . The upper slider 2 and the lower slider 3 are arranged opposite up and down, and can move up and down along the frame. The upper slider 2 is symmetrically provided with upper guide grooves 24 for guiding sliding, and the corresponding position on the frame is provided with an insertion upper guide. Groove 24 can slide up and down along the upper guide block 25 of upper guide groove 24; The lower guide groove 26 that is used for guiding sliding is symmetrically arranged on the lower slider 3, and the corresponding position on the frame is provided with inserting the lower guide groove 26 to be able to slide along the bottom. The lower guide block 27 that guide groove 26 slides up and d...

Embodiment 2

[0056] The structure of embodiment 2 is the same as that of embodiment 1, the difference is that the length of the upper crank 6 is shorter than the length of the lower crank 8, the upper drive mechanism drives the upper slider to realize low-speed and small-stroke movement, and the lower drive mechanism drives the lower slider Realize high-speed and large-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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Abstract

The invention discloses a three-degree-of-freedom crank connecting rod mechanical all-electric servo numerical control plate material bending machine. The bending machine comprises a rack, an upper sliding block, a lower sliding block, an upper die and a lower die, wherein the upper sliding block and the lower sliding block can move up and down along the rack; the upper die and the lower die which are matched and bent are fixedly connected with the upper sliding block and the lower sliding block, the upper sliding block is connected with an upper driving mechanism used for driving the upper sliding block to move, and two lower driving mechanisms used for driving the lower sliding block to move are symmetrically connected to the lower sliding block in a bilateral symmetry mode. The three-degree-of-freedom crank connecting rod mechanical all-electric servo numerical control plate material bending machine is suitable for large-tonnage working conditions 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, high in speed, low in manufacturing cost and the like.

Description

technical field [0001] The invention relates to a plate bending machine, in particular to a three-degree-of-freedom crank-connecting rod mechanical all-electric servo numerical control plate bending machine. 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...

Claims

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Application Information

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IPC IPC(8): B21D5/02B21D5/00B21D37/12B21D37/00B21C51/00
CPCB21D5/0209B21D5/0227B21D5/004B21D37/12B21D37/00B21C51/00
Inventor 徐丰羽孟凡昌肖敏蒋国平
Owner NANJING UNIV OF POSTS & TELECOMM
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