Mașină de perforat

3 lucruri importante pe care trebuie să le știți despre mașina de perforat cu turelă

3 lucruri importante pe care trebuie să le știți despre mașina de perforat cu turelă

CNC turret punching machine is an important category of CNC machine tools. It is mainly composed of the control system, main transmission system, feeding system, turntable, mold, and peripheral programming software. It is an integration of machines, electricity, hydraulics, and gas. It can realize one-button operation, and the batch process can punch a variety of pass types on a sheet, and can automatically change molds by rotating the station. As the key equipment in the field of sheet metal processing, the CNC turret punching machine has been applied and developed for more than 70 years. The most important process equipment in the industry.

3 lucruri importante pe care trebuie să le știți despre mașina de perforat cu turelă

1. Classification And Characteristics

According to the power source of the main drive, CNC turret punching machines can be divided into the following three categories:

  • Mechanical Turret Punching Machine

This structural form has single-motion characteristics, a narrow processing range, low stamping frequency, high noise, easy wear of clutches and brakes, and low lifespan. It has been eliminated by the market.

  • Hydraulic Turret Punching Machine

The impact head is driven by a hydraulic cylinder, and the stamping is controlled by an electrohydraulic servo valve. This type of product has been the mainstream product in the market for a long time. Compared with the mechanical type, its advantages are that the stamping process is expanded, the stamping frequency is increased, and the noise is reduced. However, there are disadvantages such as oil pollution, high power consumption, poor environmental and temperature tolerance, low reliability, and difficult maintenance.

  • Full-electric Servo Turret Punching Machine

With the improvement and promotion of high-torque servo motors and drive systems in recent years, the all-electric servo turret punching machine has made great progress and gradually replaced the hydraulic structure, becoming the mainstream product in the industry.

3 lucruri importante pe care trebuie să le știți despre mașina de perforat cu turelă

2. Processing Technology

The typical processing technology of a CNC turret punching machine mainly includes punching and forming.

3 lucruri importante pe care trebuie să le știți despre mașina de perforat cu turelă
  • Punching Process

The blanking process is also commonly referred to as the material separation process, which means that the processed material is sheared and separated along a closed or unclosed contour under the action of an external force. The blanking process can be directly punched into finished parts, or it can prepare blanks for the next processes such as bending, deep drawing, and forming.

Generally, the blanking process is mainly divided into the following four modes:

  1. Single flush. Complete punching at one time, including punching of linear distribution, circular arc distribution, circumferential distribution, and grid holes.
3 lucruri importante pe care trebuie să le știți despre mașina de perforat cu turelă

2. Continuous punching in the same direction. Using the method of partially overlapping rectangular molds, it is possible to process elongated holes, trimming, etc. When this punching mode is used, the superimposition of the die during the punching process will cause the punching load to deviate from the center of the die (eccentric load), which will cause torsional deformation of the machine tool structure, and may damage the die in severe cases. 1. When punching thick plates with heavy loads, the overlap of the molds should be reduced as much as possible to reduce the unbalanced load.

3. Continuous punching in multiple directions. This is a processing method that uses a small mold to process a large hole, which can increase the flexibility of the machine tool and expand the processing range of the mold. Using this punching mode, it is usually necessary to rotate the punch at different angles through the rotary station and cooperate with the positioning movement of the feeding mechanism on the XOY plane to complete.

3 lucruri importante pe care trebuie să le știți despre mașina de perforat cu turelă

4. Nibbling blanking. This is a processing mode that uses a small circular die to continuously punch out arcs or splines with a small step distance and is common. Due to the use of small circles for fitting, the contour accuracy and section quality are usually not high, and the punching efficiency is low. When the punching size is large and the number is large, it is recommended to use a special punching die.

  • Forming Process

Forming process refers to the processing method of the plate under the action of external force, the stress exceeds the yield point of the material and undergoes plastic deformation to obtain a certain shape and size. It mainly includes rolling, shallow drawing, flanging, bending, etc. The main parts of some typical parts Forming characteristics and supporting molds.

  1. Single forming, one-time shallow drawing forming processing method according to the shape of the mold. With this forming mode, the shape and size of the mold must correspond to the processed features one by one, which is the same as the processing mode of ordinary presses. A completely “rigid” processing mode.

2. Continuous forming, forming methods that are larger than the size of the mold, such as large-size shutters, rolling bars, rolling steps, and other processing methods.

The forming process of sheet metal is comprehensively affected by many factors such as material mechanical properties, plate thickness, forming temperature, and forming speed, and involves many aspects such as material elastic deformation, plastic deformation, work hardening, and material anisotropy, showing a high degree of Non-linear, its forming mechanism is extremely complex, and it is difficult to analyze through traditional mechanical formulas in actual production.

In the computer virtual environment, the finite element method is used to simulate the material forming process, which can realize the prediction and evaluation of elastic rebound, cracks, and wrinkles in the forming process, which is conducive to in-depth research on the forming mechanism. In industrial production, finite element analysis can guide mold design and optimize forming process parameters, which have immeasurable practical application value. Currently commonly used software mainly includes ANSYS, ABAQUS, MAC, LS-DYNA, DYNAFORM, etc.

3 lucruri importante pe care trebuie să le știți despre mașina de perforat cu turelă

3. Maintenance Method

1. When we use, try to reduce the number of power-on cabinets at the CNC turret punch processing site, because the air at the processing site contains a lot of oil mist, dust, and may even be metal powder, etc.

When these metal powders are scattered on the circuit board or electronic components of the control part of our CNC turret punching machine, it is very easy to cause the insulation resistance of the components to drop, and may even cause damage to the components and circuit boards of it, so for customers who have purchased our CNC turret punching machine, I would like to remind everyone that there should be strict regulations in the factory. Unless necessary adjustments and maintenance are required, it is not allowed to open the cabinet door of the electrical cabinet at will, let alone when using the equipment. Open the cabinet door.

2. When we use the CNC turret punching machine when we find some circuit boards and connectors that have been polluted by dust and oil mist, we can use a special cleaning spray for the electronic components of the CNC turret punching machine.

After a period of Over time, with the natural drying of the cleaning agent, an insulating layer will be formed on the non-contact surface, so that the place we sprayed is well insulated. When cleaning the contaminated circuit board of the CNC turret punching machine, the circuit can be cleaned with the cleaning agent. Spray cleaning operation, after spraying, put the circuit board upright, and the dust will flow out with the excess detergent liquid, and it can continue to be used after it dries naturally.

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