The internal grinder is very common in mold factories and hardware processing plants, and has become the common equipment of the majority of mechanical industry technicians. The selection of abrasive is very important for large grinding machine processing in the operation of internal grinder.
Characteristics of CNC system for internal grinder
Portability: the functional software of the system is independent of the equipment, and various functional modules run in different control systems, that is, they can run on the hardware platforms provided by different suppliers;
Scalability: the function and scale of CNC system of internal grinder can be flexibly set and modified easily. The size of the control system (hardware or software modules) can be increased or decreased according to the specific application;
Expansibility: users or secondary developers of CNC system of internal grinder can effectively integrate their own software into the NC system to form their own special system. The increase or decrease of functions only requires the loading and unloading of function modules;
Interchangeability: through standardized interface, computer gong processing, mechanical parts processing, Dongguan CNC machining center, Dongguan high-speed computer gong processing communication and interaction mechanism, different functional modules can run on the system platform with standard application program interface, and obtain equal mutual operation ability and coordinate work.
Interchangeability: the selection of hardware modules and functional software constituting the system is not controlled by a single supplier, and can be replaced with each other according to the requirements of function, reliability and performance, without affecting the coordinated operation of the whole system;
The harder the grinding roller surface of the internal grinder is, the softer the hardness of the grinding wheel should be selected.
(1) If the grinding wheel is obviously blocked (hard) or dirty, the passivated sand particles are not easy to fall off, the grinding wheel is easy to adhere to the grinding debris, and the grinding roller surface appears burn and scuffing, it indicates that the selected grinding wheel is too hard, and the following measures can be taken to improve it:
A. Reduce the linear speed of grinding wheel;
B. Increase the roller speed.
If the grinding effect is not obvious after the above measures are taken, it means that the grinding wheel is too hard, so the soft grinding wheel should be selected.
- Selection of bond for grinding wheel of internal grinder
Except resin bonded grinding wheel, ceramic grinding wheel is better for other grinding types of roller surface.
(2) If the grinding wheel is worn too fast, it means that the grinding wheel selected for the specific processing roll is too soft. The following improvement measures can be taken:
A. Increase the linear speed of grinding wheel;
B. The longitudinal feed rate of the carriage is increased to 2 / 3-3 / 4 of the width of the grinding wheel;
C. Reduce the roll speed.
If no obvious grinding effect has been obtained after the above measures are taken, it means that the grinding wheel is too soft and not suitable for use, and a harder grinding wheel should be selected.
Machinability includes formability and cutting property. Because the formability is related to the state, the strength range of various states should be considered after selecting the grade of aluminum alloy. Generally, the material with high strength is not easy to form. If bending, stretching, deep drawing and other forming processes are needed, the formability of the fully annealed material is the best, while the formability of the heat-treated state is the worst. The machinability of aluminum alloy is closely related to the alloy composition. Generally, the machinability of aluminum alloy with higher strength is better than that of aluminum alloy with low strength. The machinability of aluminum alloy is an important factor to be considered for the products that need to be machined, such as dies and mechanical parts.
Architectural aluminum is a kind of decorative structural materials. In order to improve its decorative effect, enhance its corrosion resistance and extend its service life, except for some cases, it has to go through surface treatment.
Many customers are very concerned about the hardness when buying aluminum products. The hardness is directly related to the chemical composition of the alloy. Secondly, different states also have great influence. In terms of the highest hardness that can be achieved, 7 series, 2 series, 4 series, 6 series, 5 series, 3 series and 1 Series decrease in turn. Therefore, surface treatment has become an essential and important process in the production of architectural aluminum profiles. There are many methods of surface treatment for computer gongs, and corresponding surface treatment methods can be adopted according to different uses of materials. The commonly used commercial surface treatment methods are: Anodizing coloring, electrostatic powder spraying, fluorocarbon spraying, electrophoretic painting, chemical coloring, water ripple treatment, etc.
Strength is an important factor that must be considered in product design, especially when aluminum alloy components are used as structural parts, appropriate alloy should be selected according to the pressure they bear. The strength of pure aluminum processed by computer gong processing, mechanical parts processing, Dongguan CNC machining center, Dongguan high-speed computer gong processing is the lowest, while the strength of 2-Series and 7-series heat-treated alloys is the highest. There is a positive correlation between hardness and strength.
Corrosion resistance includes chemical corrosion resistance, electrochemical corrosion resistance and stress corrosion resistance. Generally speaking, the corrosion resistance of 1 series pure aluminum is the best, 5 series is good, followed by 3 series and 6 series, and 2 series and 7 series are poor. The selection principle of corrosion resistance should be determined according to the application situation. When high strength alloy is used in corrosive environment, it is necessary to use various composite materials for corrosion protection.
Processing by material classification: aluminum alloy, hard aluminum, aluminum oxide, copper, brass, bronze, red copper, titanium, iron, aluminum parts, imported domestic carbon steel, manganese steel, alloy steel, tool steel, high speed steel, 303, 304, 316, 303, 400 stainless steel, saigang, ABS acrylic (PMMA), PC, POM Non standard precision machining of PVC, PP, nylon, bakelite, plastic, Teflon, epoxy board, plastic, etc