2. Production of CNC turret punch press
Along with the technological maturity and demand growth of CNC turret punching machines, many enterprises quickly occupied the positions of domestic CNC turret punch manufacturing, sales and technical services through independent development, introduction of technology or cooperation with foreign companies. After about 10 years of competition and development, it formed the Jinan Foundry and Forging Machinery Research Institute, Jiangsu Jinfangyuan CNC Machine Tool Co., Ltd., Hubei Sanhuan Forging Machine Co., Ltd., Jiangsu Yangli Group Co., Ltd. and Jiangsu Yawei Machine Tool Co., Ltd. Enterprise square.
The HIQ-3048 300kN CNC turret punch press produced by Jiangsu Yawei Machine Tool Co., Ltd. has its main components such as hydraulic system, numerical control system and turntable from Japan NISHINBO. The hydraulic system can program the stroke, speed and pressure. The punch bottom dead center position accuracy is 0.01mm, and the bottom dead center can be maintained. 6-axis control (X, Y, Z, T1, T2, C) The upper and lower turntables are respectively driven; the positions of the three clamps are programmable and automatically adjusted to meet the needs of different sheets; the automatic mold release detection device automatically detects the fault and interrupts the processing procedure to avoid damage to the mechanism and waste; 56 One station with two automatic indexing stations; the maximum moving speed of the sheet is 100m/min; the highest stroke frequency is 1500 times/min, the highest punching frequency is up to 350 times/min (step size is 25.4mm) and 750 times / min (step 1mm).
The STRIPPI T-HD1500H/30 300kN CNC turret punch press produced by Hubei Sanhuan Forging Machine Co., Ltd. is the latest product produced by the company's STRIPPI T company. The machine adopts the hydraulic drive system of German Harley (H+L) company, which has the characteristics of compact structure and stable stamping; the machine has 28 stations, and the maximum punching diameter of 4 stations is 88.9mm, which can provide 3 Automatic indexing station; using Siemens (SIEMENS) CNC system and servo unit, with direct programming and self-diagnosis function; the machine's full stroke repeatability is 0.05mm, the maximum punching speed is 400 times / min, the largest sheet The moving speed is up to 90m/min.
The clutchless CNC turret punch press developed by Jinan Foundry & Forging Machinery Research Institute and the servo motor directly driven by Jiangsu Yangli Group Co., Ltd. directly drive the CNC turret punch press, which are technical innovation products. Although it is not a mainstream product, it represents a certain trend or trend of product development. The large-scale production of the third-generation products and the emergence of the fourth-generation products show that the overall level of CNC turret punch presses in China has reached the international advanced level.
Third, CNC hydraulic sheet material shearing machine develops rapidly
The sheet shearing machine, also known as the shearing machine, is mainly used for cutting metal sheets and is an important sheet metal working machine. The sheet shearing machine is not only used in machinery manufacturing, but also an indispensable equipment for sheet metal distribution centers, and its application range is particularly wide. The shearing machine is divided into two types according to the structure: a gate type shearing machine and a pendulum shearing machine; according to the transmission mode, there are two types of mechanical transmission shearing machine and hydraulic transmission shearing machine. The safety and shear angle can not be adjusted is the fatal shortcoming of the mechanical shearing machine. Therefore, in addition to the small-sized shearing machine, the hydraulic shearing machine has become the undisputed fact. Based on the advantages of hydraulic transmission control, CNC shearing machine mainly adopts hydraulic transmission. In addition to the adjustable speed and stroke, the CNC hydraulic shearing machine develops and practically adjusts the automatic adjustment mechanism of the shear angle and the automatic adjustment mechanism of the blade gap, so that it has the conditions for entering the sheet processing center and sheet processing FMS. The early products of CNC hydraulic shearing machines differed greatly in structure and configuration. After nearly 10 years of development, the CNC hydraulic shearing machines produced by various enterprises are gradually moving closer to the international mainstream. At present, CNC hydraulic shearing machines generally adopt the overall welded structure. The aging-treated frame has good strength, rigidity and precision retention. The integrated hydraulic system servo drive improves the reliability of the machine tool operation; The automatic adjustment mechanism and the blade gap automatic adjustment mechanism automatically adjust the cutting angle and the blade gap according to the material and thickness of the material to be cut; and automatically adjust the cutting stroke and the back gauge position according to the cutting length; It can be equipped with a front feeding system or a rear feeding device, which integrates feeding and unloading, which effectively improves the automation of the equipment.
In recent years, in order to meet the needs of sheet metal processing, a new type of hydraulic shearing machine has appeared, called a right angle shearing machine. The right angle shearing machine is equipped with two blades at right angles to cut out rectangular plates of any size and can be cut on large sheets, which not only improves the cutting efficiency, but also improves the cutting efficiency. Material utilization. The CNC right angle shearing machine and the CNC turret punching machine and the CNC sheet bending machine can form a sheet processing center.
There are many enterprises producing CNC shearing machines in China, Shanghai Punching and Cutting Machine Tool Factory, Hubei Sanhuan Forging Machine Co., Ltd., Jiangsu Yawei Machine Tool Co., Ltd., Jiangsu Jinfangyuan CNC Machine Tool Co., Ltd., Jiangsu Yangli Group Co., Ltd. and Tianshui Forging Machine Companies such as limited companies can be called the best.
Fourth, CNC hydraulic sheet material bending press has networked conditions
Sheet bending machine can use a simple mold to bend the metal sheet at various angles to obtain metal sheet parts with complex shapes. It is easy to operate, has strong versatility and low operating cost, so it has been widely used. . Sheet bending machines can be divided into mechanical bending machines and hydraulic bending machines according to their transmission forms. At present, the mechanical bending machine has been replaced by a hydraulic bending machine, and this technical route is the same as the shearing machine. The advantage of the hydraulic bending machine is that it has a large working stroke, and the maximum nominal force can be generated at any point of the stroke; the bending stroke, pressure and speed can be adjusted, and the numerical control can be easily realized; the rapid approach and slow bending can be realized. It meets the process requirements of workpiece bending; the multi-cylinder synchronous system greatly improves the bending precision, and realizes the linkage of the bending machine, which broadens the process range of the bending machine. CNC hydraulic sheet metal bending machine is the earliest and most widely used sheet metal processing machine tool. It has been developed from the early 3 axes to the current 8-axis control, and is used with loading and unloading robots and bending robots. Can form a CNC bending unit.
During the "10th Five-Year Plan" period, China's CNC hydraulic sheet metal bending machine has entered the ranks of international advanced level. At present, CNC hydraulic sheet bending machines generally use digital closed-circuit hydraulic systems of BOSCH or HOERBIGER and special CNC systems of DELEM or CYBELEC; dynamic pressure compensation systems, side beam deformation compensation systems, temperature compensation systems, plates Thickness and rebound online detection and correction system to ensure the accuracy of the relative position of the table and the slider under the force state; mature and perfect process software, automatic programming function and color display, can realize the process storage and rotation of various bending workpieces Production; the maximum free-range speed and working speed of the slider reach 100mm/s and 10mm/s respectively, which greatly improves the working efficiency of the bending machine; the multi-axis CNC positioning mechanism ensures the accurate feeding of the sheet, and the positioning accuracy can be The control is around ±0.01mm.
The PR6C225×3100 2250kN CNC sheet bending machine produced by Jiangsu Jinfangyuan CNC Machine Tool Co., Ltd. is a comprehensive embodiment of the above technology. The machine adopts electro-hydraulic servo synchronous control technology and hydraulic convex compensation technology, integrated hydraulic system, DA69W CNC system of DELEM Company of the Netherlands, realizes the position of the bending slider Y1, Y2 and the back gauge X1, X2, Z1, Z2, 8-axis control of R1 and R2 positions. The slider has a fast downward speed of 120mm/s, a bending speed of 9mm/s, and a return speed of 80mm/s. The positioning accuracy of the bending slider is 0.005mm, and the positioning accuracy of the front and rear position of the back gauge is 0.005mm. The machine can be equipped with a 6-axis bending robot to form a CNC
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