The development direction of the most popular dome

2022-07-24
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In the future, the development direction of domestic CNC punch press is expected

the market demand for domestic high-end CNC machine tools is increasing, and new CNC machine tools are coming out frequently. The CNC punch press has a CNC control system, which can set the slider arbitrarily according to the needs of the processing method. The ARJ ⑺ 00 regional aircraft can safely transport more than 30000 passengers in terms of movement mode and speed. According to the changes of the market, the development direction of domestic CNC punch press in the future is expected to have the following models

1. The screw CNC punch

servo machine uses AC servo motor to drive the slider through the screw. The position of the bottom dead center in the forming process can be controlled by the position reading device by providing data to the position control device. Therefore, the thermal expansion and elastic deformation of the machine will not affect the accuracy of the product, and the most suitable sliding block motion mode and the position of the lower dead center will be adjusted in a very small unit. Therefore, the non cutting forming screw servo punch suitable for high precision and high function adopts the form of oil pressure motor and energy accumulator for torque control. The position control of the bottom dead center can reach the micron level. It is an energy-saving and environmental friendly model

2. Crankshaft servo punch

CNC punch combined with AC servo motor. This kind of punch uses a servo motor to replace the clutch brake and flywheel on the original punch. This kind of punch has the characteristics of servo punch whose sliding block movement mode can be set arbitrarily, and also has the torque characteristics of ordinary mechanical punch as shown in Figure 3. However, its working energy will not decrease at low speed

3. Compound forming punch

compound forming is a powerful means of non cutting forming. Block forging in cold forging is an example, which controls the plastic flow of materials by controlling the actions and time charts of multiple punches and dies. The precision and formability of products can be improved, and even the number of processes can be shortened

the double action forming can be roughly divided into two categories: paying attention to the universality of punch press and using the double action die base; It is easy to assemble and disassemble the dies for multi variety production, and it is easy to use the compound punch for forming. Recently, not only in forging processing, but also in the diversification of sheet metal forming and forging combined forming and the improvement of capacity, the punch is required not only to have multi action performance, but also to have high versatility

4. Closed forging punch

closed forging die and universal forging punch have been widely used in the forming of star wheel and cross coupling. The die structure has blocking function and coordination function. Other closed forging punches that can save the piping time during die assembly can be divided into two types: these functions are all in the punches and the upper and lower oil cylinders are on the punches and the coordination mechanism is on the die base

5. Sheet metal forging punch

with the popularization of sheet metal forging, it is required that the forging punch can carry out deep drawing or shorten the engineering number, so the slider and workbench must be equipped with oil cylinders. The original block forging almost all used high-capacity atmospheric pressure action. In addition to the atmospheric pressure action corresponding to the working method, the plate forging also required sequential action, self-locking and other functions

6. Punch for gear forming

compound hydraulic punch for spiral gear forming. The punch press has a total of sliding drive, 2 in the slider, 2 in the workbench, and a total of 5 drive sources all share an oil pressure drive device. In the initial stage of forming, the punch is inserted into the tooth space of the female die in the block, and the material flows from below for initial forming. In this state, the core rises and the core diameter in the center of the material changes from coarse to fine. At this time, there is a new space in the inner diameter of the workpiece, which can produce new plastic flow. Therefore, increasing the pressure of the material can fill the tip of the tooth shape. The processing pressure of the products processed by this method is only 1300mpa, the tooth shape part collapses, and the left and right alignment of the CNT sample is ensured by the fixture. The flame-retardant conveyor belt meets the requirements for covering rubber of the mine flame-retardant conveyor belt in terms of strength, abrasion, static electricity, flame retardance, etc., and the angle and burr are very small. The formed gears can reach jis3~4 grades by using the compound forming to control the material flow. The ACR foaming processing aid 5.0~8.0 is very close to the high value-added non cutting forming

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