What is the selection method of sealing ring of cnc press brake hydraulic press brake under high temperature conditions?

Views: 10     Author: DURMAPRESS     Publish Time: 2021-08-04      Origin: DURMAPRESS


What is the selection method of sealing ring of cnc press brake hydraulic press brake under high temperature conditions?

Under the premise of low temperature bending machine seal ring determination method

First, the sealing of low temperature cnc press brake hydraulic press brake is required

1. Use low temperature to seal data cnc press brake

At low temperatures, bending machine temperature resistance additional requirements. Reasonable determination of sealing data can make the usual hydraulic seal is still suitable for low temperature operation premise, simplify the order, virtual consumption. Table 10-1 lists the limits for the use of different sealing materials. The temperature.

2. The sealing structure accepts the seal of metal bellows type bending machine or metal ripple pipe -- the seal of universal bending machine

From the point of view of heat resistance, the rescue seal ring is the crux of the weak and weak seal of the bending machine. When the temperature exceeds 80℃, general rubber is not suitable. Temperature across 230~250° C, can not use PTFE. In addition, because of the low temperature, the spring in the pyrolytic medium. Therefore, when the temperature exceeds 220℃, metal ripple pipe bending machine should be used for sealing. Perhaps use a seal layout with metal ripple tubes and a general purpose bending machine seal meta.

upper punch and down die

3. Accept the cooling method

At low temperature, the bending machine mold price, in order to ensure the reliability of the secret seal, the hydraulic seal is roughly cooled, and to prevent the task under the dry appearance. Insist that the temperature in the sealing gap is lower than the volatile temperature of the sealing liquid.

The cooling method is to check the temperature of the seal. There are scour, congestion and fluid circulation in the common temperature control. At low temperatures, the following options can also be used:

1 Use diphy1 as the blocking fluid, which is cold non-pressure heat exchanger blocking liquid through the process of pumping screw transport;

When there is no suitable liquid at -- temperature, the corrosion caused by atmosphere can be protected by nitrogen or subgas.

How should we choose the probe of hydraulic bending machine?

The selection of hydraulic bending machine probe, general reference to the following aspects.

mechanical crowning

1, according to the processing tip

The enterprise or according to the disposal needs to determine the probe. Metaphorically, if the workpiece needs to be measured and calibrated during the process, or the workpiece detection probe is selected; For the tool view, determine the tool search probe. In addition, also roughly according to the complexity of the processing of hydraulic bending machine probe. For example, in the processing of complex workpiece, the use of hydraulic bending machine probe, in the processing of simple workpiece using hydraulic bending machine probe.

2, choose the right stylus

As a part of hydraulic bending machine measurement piecemeal, the stylus will directly affect the measurement of hydraulic bending machine probe. As a result, companies are able to use the stylus as a reference when deciding on the probe.

Generally speaking, the selection of measuring needle follows three criteria, namely, rigidity, accuracy and machining. When the workpiece hardness is high, choose rigid stylus, such as stainless steel stylus or tungsten carbide stylus. Otherwise, it may reduce the rigidity of the stylus. When the processing accuracy of the workpiece is high, the measuring accuracy of the measuring needle is also improved. In general, the shorter the measuring rod, the larger the diameter of the measuring ball or the smaller the number of measuring needle components, the accuracy of the measuring probe of the shear machine is measured. In addition, if the vibration in the process is very large, it is necessary to determine the vibration-resistant stylus, such as carbon fiber stylus.

foot pedal

Hydraulic bending machine probe is an important aid device in hydraulic bending machine. CNC cutting machines can advance machining accuracy and compliance with low capital. Testing the installation of shears probes is an easy and convenient way for companies that want to improve the machinability of shears.

Reduce gasket adjustment and shorten preparation time. For example, using 1/2 inch (0.0127 m) and meter opening to form mild steel, the bending radius of the section is approximately 0.078 inch. During bending, die holes should be spaced 8 times the thickness of the metal material. If the bending machine thick material is 1/4, then folding 10 feet needs 200 tons, bending machine mold manufacturers, bottom die bending will need at least 600 tons, if the large department of the workpiece is five feet or shorter, bending machine mold how much money, tonnage can be reduced by nearly half, so as to reduce the cost of procurement. If a similar small bending radius thickness of the material, hydraulic plate bending machine must be a bottom die formation. Therefore, it is required 10 times the free bending stress. There are many kinds of bending properties of the material, the thickness of the material can be folded according to the detailed material. It is possible to obtain the tonnage of the machine bending machine manufacturer and estimate the tonnage required per foot length for different thicknesses and different materials.

E21 NC Controller

The brand of the material is also a pivotal factor.

If the bending radius is less than the thickness of the material, the front end should be used to punch the hole radius less than the thickness of the material and will press the bending method. However, the pressure required for bottom die forming is about four times that of free bending. It is often important to determine the specification of a new machine by the length of the material.

The bending radius is freely bent by the bending machine, and the bending radius is 0.156 times the interval of the die hole.

Bending machine under the same load, the table and slider torque is 4 times that of 5 ft 10 ft machine. In other words, the machine needs fewer gaskets and shorter adjustments to produce qualified parts. Compared with stainless steel and mild steel, the load required is usually increased by about 50%, although most brands of soft aluminum are reduced by about 50%.


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