# CNC manual programming methods and procedures during CNC machining (2)

CNC programming methods and procedures during cnc machining (2)
2. Calculate the coordinate value of the tool path According to the geometry of the part drawing when CNC machining service, and the programmed coordinate system, calculate the tool center trajectory and get all the tool position data. The general CNC system has the functions of linear interpolation and circular interpolation for CNC machined parts. For the contour processing of simple-shaped parts with a relatively simple shape (such as parts composed of straight lines and circular arcs), only the starting point, end point, and arc of the geometric elements need to be calculated. The center of the circle (or radius of the arc), the point of intersection of the two geometric elements, or the coordinates of the point of tangency. If the CNC system does not have a tool compensation function, the coordinates of the motion path of the tool center must be calculated. For parts with complex shapes (such as parts composed of non-circular curves and surfaces), the actual curve or surface needs to be approximated by a straight-line segment (or arc segment), and the coordinates of its nodes are calculated based on the required machining accuracy.
Lemo focus on CNC machining service, CNC turning service, CNC milling service since 2002. Welcome to send us detial drawings ( showed material , surface treatment, quantity), we will provide quotation with 12 hours:
Amy Chen (Oversea Marketing Manager)
Dongguan Lemo Precision Metal Products Co.,Ltd
No.84 Zhongli Rd,Nancheng,Dongguan,Guangdong,523000,China.
Direct Phone (Wechat): 86-137 1326 2409Tel: 86-769-8803 9052(Ext 2280)
Skype: amyptj
Email: [email protected]URL1: www.ptjmachining.com

Previous: More prepare working about programming for precision machiningNext: CNC manual programming methods and procedures during CNC machining (1)

Link to this article：CNC manual programming methods and procedures during CNC machining (2)

Reprint Statement: If there are no special instructions, all articles on this site are original. Please indicate the source for reprinting:Mold Wiki，Thanks