|Mechanical structure and working principle of CNC milling machine|
|Date: 2015-01-07 Popularity: 2531|
| From the characteristics of digital control technology. As the CNC machine tools use servo motors, the digital technology has been used to achieve direct control of the working sequence and movement displacement of the machine's executive parts. Greatly simplified. Digital control also requires the mechanical system to have high transmission rigidity and no transmission clearance to ensure the execution of control instructions and the realization of control quality. At the same time, due to the continuous improvement of computer level and control capabilities, it has become possible to allow more functional components to perform the various auxiliary functions required on the same machine tool, so the mechanical structure of CNC machine tools has higher integration functions than traditional machine tools Claim. |
From the requirements of the development of manufacturing technology, with the emergence of new materials and processes, and the requirements of low cost in market competition, metal cutting is moving towards higher and higher cutting speed and accuracy, higher and higher production efficiency and systems. Increasingly reliable direction. This requires the CNC machine tools developed on the basis of traditional machine tools to be more accurate. The driving power is too high, the mechanical mechanism has better dynamic, static and hot steel degrees, more reliable work, and can achieve long-term continuous operation and as few as possible. Downtime.
The mechanical structure of a typical CNC milling machine is mainly composed of basic parts, main drive system, feed drive system, rotary table and other mechanical function accessories.
Basic parts The basic parts of CNC milling machines usually refer to the structural parts such as the bed, columns, beams, table, base, etc., which have large dimensions (commonly known as large pieces) and constitute the basic frame of the machine tool. Other parts are attached to the base part, and some parts need to move along the base part. Since the base piece plays a supporting and guiding role, the basic requirement for the base piece is good steel.
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