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 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 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
H62 brass represents ordinary brass with an average copper content of 62%,ordinary brass is based on the addition of other elements of copper alloy be called special brass and it is still represented by "H",followed by the chemical symbol and average composition f other added elements.Such as H62 that the copper content is 60.5%~63.5%,remaining content is zinc.HA59-3-2 indicates that its copper content is 57%~60%,aluminum content about 2.5%~3.5%,nickel content is 2%~3%,and the remaining content is zinc.There are three kinds of brass that are divided into ordinary brass,special brass and cast brass.Cast brass begins with ZCu followed by the symbol of other elements and their average content.
Ordinary brass has good mechanical properties,it has good plasticity in the cold state,better plasticity in the hot state.Has good machinability,easy brazing and welding,corrosion resistance,but it is easy to produce crack.In addition,the price is cheap and widely used in a common brass variety.H62 brass is much harder at room temperature in β phase than in a phase,so it can be used for parts that bear large loads."a+"two-phase brass can be hot machining above 600℃.Microstructure of a+β two-phase brass:a is a bright white solid solution and β is a CuZn-based ordered solid solution.
It can make all kinds of tensile and bending manufacturing stress parts,such as pins,rivets,washers,nuts,ducts,barometer springs,screen mesh,radiator parts,etc.
Mechanical property
Strength of extension(Rm N/mm2）：385.0
Extend rate(A%):15.0
Chemical component Cu:60.5-63.5 Ni:0.5 Fe:0.15 Pb:0.08 Zn:remaining
Impurity:0.5
Mechanical property:（σb/MPa)410-630
Elongation（δ10/%）≥10
Vickers hardness:(HV)105-175
Thickness≥0.3）Note:thickness 0.3-10
Processing technic
The quantities of tools:9 tools
Tool Type
35°round turning tool
2MM cut-off tool
∅7.1 drill bit
∅8 boring tool
∅8 inside threading tool
∅5.5 drill bit
1/4-32 screw tap
∅8 milling cutter
∅1.5 drill bit
∅1.5 milling cutter
According to the drawing to analysis that the copper valve parts haven't special precision requirements in the shape and position tolerance.Therefore,we choose the direction of 5/8 thread of the parts as the priority for machining,because there is a requirements of R0.5 Angle in this direction.In order to fillet R0.5 Angle and the cylindrical inclined plane and end face processed surface connection relationship is more perfect.
Use 35°round turning tool machining parts shape,then use ∅7.1 drill bit, ∅8 boring tool to machining ∅7.1 and 5/8 x18 thread bottom hole.
Use ∅8 inside threading tool to machining 5/x18 thread,then use ∅1.5 drill bit,∅1.5 milling cutter to machining hole of ∅1.5×3.5 size,then use ∅5.5 drill bit,1/4-32 tap screw and ∅8 milling cutter to machining ∅9.5 and 1/4-32 thread,then cut off the parts use 2mm cut off tool.
It is necessary to custom clamp before processing at both end,male thread 5/8×18 length is 11mm.As following picture shows:
The reason is that the surface is inclined plane of this parts and there is no clamping condition.So it only can assembly with 5/8×18 internal thread which has been machined with the 5/8×18 external thread of the fixture.Then processing of the remaining part,which not only ensure the repeated positioning error of the parts but also improved the processing efficiency.
Use 35°round turning tool to machining total length 59mm,then use ∅7.1 drill bit and ∅8 boring tool to machining 1/2×20 thread.Finally make surface treatment of chrome plated.
Please refer to finished parts as below:
Recommended Products:Customized Stainless Steel CNC turning parts
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