Metal grinding machines are an important and indispensable tool in the process of metal shearing and surface treatment. At present, various types of metal grinders are manufactured by different manufacturers to create a variety of machines, so customers can easily choose the right machine for their needs. Especially, choosing the best oscillating spindle sander. Learn about the stages of grinding metal. In the process of finishing metal products, grinding, grinding surface metal is an important step, contributing to the aesthetic value, value for use products. “Grinding” and “polishing” are a form of machining, involving the removal of a metal layer from the surface by cutting operations.
Metal grinding machines used in industrial production are mainly used to grind the surface of the metal. After machining by the manual method such as turning, milling …, the surface of the new product reaches the raw level. In order to attain the level of semiconductor or semiconductor, we have to reduce the surface roughness or surface underside, or smoothing or polishing the surface of the product. These basic steps include grinding – semi – fine grinding and fine grinding (polishing).
The purpose of the grinding is to make the surface of the product after the work achieved clean, smooth no corner, sharp edges as required, making the surface smooth, bright beautiful. Mainly products that need to be polished are household products due to cosmetic requirements. Currently, there are many types of metal grinding machines in the market: three-dimensional vibration polishing machine, grinding machine using grinding wheel, etc. The most popular and widely used machine in the factory today is the grinding machine using the specialized grinding wheel.
This machine uses frictional force due to the high-speed rotary grinding wheel that is created when the product is in contact with the grinding wheel to polish the product. The disadvantage of this manual grinding method is that it takes time, labor, and workmanship to be irregular depending on the skill of the worker. In addition, because of the abrasive processing caused by frictional force, the dust generated during processing will also affect the health of the producer. Want to limit the two disadvantages on the need to invest in automatic grinding line. However, capital is relatively high, only suitable for large companies. Three-dimensional vibration polishing machines are an alternative to manual grinding machines, which can be easily and efficiently handled with low investment costs.
1. Rotary ball grinding machine: Machine structure: The rotary cage rotary machine is basically a polygonal cage designed to rotate on the motorized shaft, in a cage lined with anti-abrasion material. Materials and abrasive are inserted into the cage for polishing. Principles: The product is accompanied by a grinder in the cage, while the grinding wheel attaches to the surface of the product, peeling off the underside of the product to make the product smooth. Products and materials are constantly inverted. Advantages: Abrasive materials and abrasives are continuously contacted and create a polishing process, almost all surfaces are struck. Disadvantages: Materials in addition to being scrubbed by polishing material but also tea close together, sometimes causing scratches on the surface. The machine can not spin at high speed, create a loud noise.
Application: Mainly used for small products, used to sharpen, remove the sharp edge of the product, good strength firmness is not afraid of destruction and products to require low gloss.
2. Vibrating Machine:
Machine structure: Vibrating polishing machine consists of a circular tray cushioning on the vibrating platform by the spring system, the motor is attached directly to the tray, causing vibration when rotating due to eccentric wing mounting. Principle: When the rotary engine produces vibration, the product, and the polishing material are placed in the tray, when the vibration, the product, and the grinding material are close together and are constantly rotated around the milling due to the centrifugal force.
Advantages: The machine is very good at small size products, even surfaces, materials can be hit at small angles of the product, lower noise than rotary cage machine.
Disadvantages: The machine just hit the product small, moderate, the required gloss moderate, sometimes the product bump into each other can cause scratches, low grinding.
Application: Machine for machining mechanical products after basic machining by lathes, presses, for the casting of articles from molding, polishing of household articles of aluminum, copper.