In order to increase the cross-sectional area of the hole cutter as much as possible, it is generally enough to leave 1-2mm cutting allowance in the radial direction. The cutter bar should be circular, the main cutting edge of the cutter is in the longitudinal section through the cutter bar axis, and the shorter the cutter bar length is, the better,
When grinding the arc flank of the inner hole cutter, great attention is paid to it. It is a place with high technical content in inner hole machining, and it is also the main aspect to solve the chatter pattern,
- In fact, the above is basically about the upper level, and the most important thing is the tool grinding. If the tool grinding is not good, it is difficult to process qualified parts,
a. First of all, the materials of cutting tools are different for different parts. For stainless steel, red copper and brittle materials, tungsten cobalt type cutting tools should be used. For plastic materials such as carbon steel, tungsten cobalt titanium type cutting tools should be used. For materials with high hardness, YW series cutting tools should be used, that is, tungsten cobalt titanium tantalum niobium type cutting tools,
b. The most important point is that the grindability of grinding wheel and grinding wheel is better, and the rigidity of grinding wheel machine is better. It is better to have two grinding wheels, one with brown corundum wheel (grinding cemented carbide) and the other with white corundum wheel (grinding high speed steel). If the above two kinds of grinding wheels are installed on one grinding machine at the same time, it is difficult to grind the standard cutting tools.
- Generally, the machining of stainless steel parts is to first process the outer circle and then the inner hole, because the deformation of the outer circle is smaller than that of the inner hole,
- Stainless steel parts processing is a very practical work, it needs a long time of actual operation to verify your idea
The density of aluminum profile is only 2.7g/cm3, which is about 1 / 3 of that of steel, copper or brass (7.83g/cm3 and 8.93g/cm3 respectively). Aluminum exhibits excellent corrosion resistance in most environmental conditions, including in air, water (or brine), petrochemical and many chemical systems.
conductivity
Aluminum profile is often used because of its excellent conductivity. On the basis of equal weight, the conductivity of aluminum is nearly twice that of copper.
Thermal conductivity
The thermal conductivity of aluminum alloy is about 50-60% of that of copper, which is beneficial to the manufacture of heat exchangers, evaporators, heating appliances, cooking utensils, as well as the cylinder head and radiator of automobiles.
Non ferromagnetism
Aluminum profile is non ferromagnetic, which is an important characteristic for electrical industry and electronic industry. Aluminum profiles are not self ignitable, which is important for applications involving handling or contacting flammable and explosive materials.
Machinability
The machinability of aluminum profile is excellent. In all kinds of wrought and cast aluminum alloys, as well as in all kinds of states of these alloys, the machining characteristics change greatly, which requires special machine tools or technology.
Formability
Specific tensile strength, yield strength, ductility and corresponding work hardening rate control the variation of allowable deformation.
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