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Working principle of slow wire processing

 Slow wire walking, also called low-speed wire walking, is a kind of CNC machining machine tool that uses continuously moving fine metal wire as an electrode to pulse spark discharge on the workpiece to generate a high temperature of over 6000 degrees, ablate metal and cut into a workpiece. The principle of wire processing is the phenomenon that there is a gap between the wire electrode and the workpiece, and the metal is removed by continuous discharge. Since the slow-moving wire cutting machine adopts the method of wire electrode continuous feeding, that is, the wire electrode is processed during the movement, so even if the wire electrode is worn out, it can be continuously supplemented, so it can improve the machining accuracy of the parts and slow the wire. The surface roughness of the workpiece processed by the cutting machine can usually reach Ra=0.8μm and above, and the roundness error, linear error and dimensional error of the slow-moving wire cutting machine are much better t

How Do Cnc Swiss Machines Work

How Do Cnc Swiss Machines Work Save 0 What Is Swiss Machine –The full name of the walking CNC lathe, it can also be called the spindle box mobile CNC automatic lathe, the economical turning and milling compound machine tool or the slitting lathe. It belongs to precision machining equipment, which can complete compound  machining such as turning, milling, drilling, boring, tapping, and engraving at one time. It is mainly used for batch  machining of precision hardware and special-shaped shafts. This machine tool first originated in Germany and Switzerland. In the early stage, it was mainly used for precision machining of military equipment. With the continuous development and expansion of industrialization, due to the urgent needs of the market, it was gradually applied to the  machining of civilian products; the development of similar machine tools in Japan and South Korea Earlier than China, it was mainly used in the military industry in the early days. After the war, it was gradually

Spring Design Attention And Roll Forming Method

Spring Design Attention And Roll Forming Method The coiling characteristics and methods of springs are divided into cold coiling method and hot coiling method. Cold winding method: When the diameter of the spring wire is less than 8mm, the cold winding method is adopted. High-quality carbon spring steel wire is usually first cold drawn and then heat treated. After winding, it is generally not quenched, but only tempered at low temperature to eliminate the internal stress during winding. Hot-rolling method: Springs with larger diameter (>8mm) spring wire should use hot-rolling method. Hot rolled springs must be quenched and tempered at medium temperature. The Design Process Of Various Springs ·          Installation space: When designing a  compression spring , it is necessary to have a clear understanding of the space required for the installation of the spring, in order to effectively grasp the basic manufacturing conditions of the compression spring, including the outer diam

Elimination method of automobile steering pump noise

The steering pump is the power source for car steering. At present, major domestic models such as Jiefang, Dongfeng, Great Wall Pickup and Jinbei Bus all use vane-type power steering pumps. This kind of steering pump is equipped with a flow control valve and a safety valve. It is small in size, light in weight, and simple in system connection. The disadvantage is that it is noisy.

1: The main reason for the noise generated by the steering pump is the mixing of air in the system, especially in the suction area of ​​the hydraulic pump, because the pressure is low, it is easy to produce cavitation, that is, the volume of the bubble is compressed in the high pressure area, and the volume suddenly increases when it reaches the low pressure area. , Produce an explosion and form noise. Therefore, the oil inlet pipeline must be sealed reliably during installation to prevent the joint from loosening due to vibration; the sealing material must be very reliable, and there must be enough hydraulic oil in the oil tank.

2: The second cause of steering pump noise is the failure of the flow control valve, such as improper fit between the valve hole and the valve core, the valve hole is rough, the safety valve and the valve seat are dirty and not sealed, the gasket is not round or has gaps, etc. Both can cause noise. Especially when the control valve is working, the system pressure is transient, which makes the control valve spring fatigue deformation and failure, which will aggravate the noise. Therefore, check the use of the control valve, check whether the mating parts are worn or not, check whether the spring is invalid, and replace these parts if necessary.

3: The third cause of steering pump noise is mechanical vibration. Therefore, when installing the steering pump, ensure that the coaxiality error between the pump shaft and the main engine is less than 0.1mm, and the inclination is less than 30. The connecting pipe should not be too thin or long, and minimize the elbow to avoid liquid vortex. The speed of the steering pump should not be too high to avoid damage to the bearings.

The automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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