A, CNC milling machine and machining center process characteristics
1、CNC milling machine
CNC milling machine according to its spindle position is divided into three categories: vertical, horizontal, vertical and horizontal two-use milling machine.
Number of axes controlled by CNC system: 2.5-, 3-, 4- and 5-axis simultaneous milling machines.
According to the different positions of its spindle is divided into three categories: vertical, horizontal, vertical and horizontal double-use, double column machining center.
By type of tool change: with robot, without robot, turret tool magazine machining center
II: Tool and process characteristics
2、Face milling cutter
Large chip space, smooth chip discharge, high processing efficiency
Roughing and fine tooth structure with different strengths to meet different processing conditions
High-precision, long-life cutter body
Optimized groove and grade for high removal rate cutting
Tough carbide pads and self-aligning inserts for safe and easy tooling.
High efficiency and surface finish in combination with a high degree of polishing efficiency
3、Combined carbide tools
4、There are a total of 7 drill bits: NC centering drill, step drill, twist drill, internal cold twist drill, triple edge drill, straight slot drill, center drill.
5、Tungsten carbide end mills
Series 4201, 4202, 4605, 4606, 4551 - thread machining of holes
Third, the numerical control system function
1. g90 g80 g40 g17 g49 g21.
Function: initialization state setting.
Where: G90 - absolute value mode.
G80 - Cancellation of fixed cycles.
G40 - eliminates tool radius compensation.
G17 - Select xy plane.
G49 - Cancellation of tool length compensation.
G21 - Metric Unit Input Selection
Prescripts: Prescripts are executed at the same time as move instructions in the same program segment.
(W) and post-command code
Post-command code: execute the movement instruction after the same segment is executed.
3、F function - fz(mm/min)
Feeding speed vf = fz × z × n; (milling machines, machining centers)
4、S function - r/min
(1) The knife change command is
Robot-less type tool change method:--Fixed tool number type
M06 T02; (spindle with tool back in magazine first, then rotate to No. 2 and attach No. 2 to spindle)
With robot type tool change method:- No fixed tool number type
T01; (#1 knife turned to knife change position)
M06 T03; (replace tool #1 on spindle and turn tool #3 to tool change position)
M06 T04; (replace cutter #3 on the spindle and turn cutter #4 to the tool change position)
M06; (swap #4 cutter onto spindle)
(2) The Z-axis returns first to the machine's origin and the Y-axis must return to the second reference point (with robotic tool change).
G91 G28 Z0.
G91 G28 Z0.
G91 G28 Z0.
Contact: Jacky Wang
Phone: +86 14714816052
Tel: +86 14714816052
Email: [email protected]
Add: Floor 1, Shixi Industrial area, Canton, Guangdong, China. 510288