FAQ：
Q: What is precision machining?
A: The
precision processing technology refers to various processing technologies whose
processing accuracy and surface finish are higher than that of the
corresponding processing methods.
Q: What are the tolerances for precision
machining?
A: The
precision of precision machining is generally 10 ~ 0.1μm, the tolerance level
is above IT5, and the surface roughness Ra is below 0.1μm.
Q: How do precision machining?
A: Technical
means of precision machining
Precision machining methods include cloth
wheel polishing, abrasive belt grinding, ultra-fine cutting, fine grinding,
grinding, ultra-precision grinding and polishing technology, magnetic particle
polishing, etc.
1. Polishing
It is a kind of fine processing on the
surface of the workpiece using mechanical, chemical and electrochemical
methods, mainly used to reduce the surface roughness of the workpiece. Common
methods are: manual or mechanical polishing, ultrasonic polishing, chemical
polishing, electrochemical polishing and electrical Chemical mechanical
compound processing, etc.
2. Abrasive belt grinding
Abrasives are used to process workpieces
using a blended fabric with bonded abrasives. It belongs to the category of
coated abrasives grinding. It has the characteristics of high productivity,
good surface quality and wide range of use. Foreign countries have made great
achievements in abrasive belt materials and production processes. With the
abrasive belt series suitable for different occasions, general and special
abrasive belt grinding machines have been produced, and the degree of
automation has been continuously improved, but there are few domestic abrasive
belt varieties. The quality also needs to be improved, and the machine tool is
still in the transformation stage.
3. Precision cutting
High-precision machine tools and
single-crystal diamond tools are used for cutting. They are mainly used for precision
machining of soft metals that are not suitable for grinding, such as copper and
aluminum. They also have good optical properties.
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