GSK 218M is widespread CNC system (matched with machining center and general milling machine) independently developed by GSK CNC Equipment Co., Ltd., employed with 32-bit high performance CPU and super-large-scale programmable device FPGA, real-time control and hardware interpolation technology to ensure the system gets the high efficiency with the ฆฬm-level precision, and its PLC can be edit on-line, which makes the logic control function become more flexible and strong.

• The standard configuration of system is 4-axis 3 link, and the rotation axis can be set by parameters;

• The max. positioning speed can reach 30m /min, and the max. interpolation speed can reach 15m /min;

• Linear, exponential and S acceleration/deceleration is optional;

• Bidirectional pitch error compensation, backlash error compensation, tool length and tool radius compensation are available;

• Convenient management for the system with multilevel operation password;

• The Chinese and English interface can be selected by setting the related parameter;

• The system has 56M program memory capacity to store up to 400 programs and has the back stage edit function and can edit the program on the background

• The system has the standard RS232 and USB interface which can realize the bidirectional transmission of programs, parameters and PLC programs between CNC and PC;

• The system has DNC control and its baud rate can be set;

• Its built-in PLC can realize the various of logic control functions; its ladder can be edit , uploaded and downloaded on-line;

Controlled axes

Controlled and linked axes: up to 4 feed axes, one spindle, 3 linked axes

Interpolation method: positioning (G00), linear (G01), arc (G02, G03), helical interpolation

Max. stroke: Metric: กภ 9999.9999 mm , least input increment: 0.0001 mm

Inch : กภ 999.9999 inch ฃฌ least input increment: 0.0001 inch

Electronic gear: instruction multiplication coefficient 1 กซ 255, instruction division coefficient 1 กซ 255

Traverse speed: max. 30m /min

Rapid override: F0, 25 ฃฅ , 50 ฃฅ , 100 ฃฅ real-time adjustment

Cutting feedrate: max. 15m /min (G94) or 500.00mm /r (G95)

Feedrate override: 0 กซ 150 ฃฅ divided into 16 level to real-time adjustment

Manual feed override: 0 กซ 150 ฃฅ divided into 16 level to real-time adjustment

MPG feed: 0.001, 0.01, 0.1mm

Single step feedrate: 0.001, 0.01, 0.1mm

Acceleration and deceleration

The post acceleration and deceleration can be controlled in Manual mode, and the linear or exponential acceleration and deceleration, and the acceleration and deceleration time constant can be set.

MPG mode can select the instant stop and complete run, and the latter is for the acceleration and deceleration after interpolation, can select the linear or exponential acceleration and deceleration, and the acceleration/deceleration time constant can be set.

Positioning (G00) can select the linear or deflection positioning. The acceleration/deceleration before/after interpolation is optional. The acceleration/deceleration before interpolation is for the linear or S type, and the ones after interpolation is for linear or exponential. And the acceleration/ deceleration time constant can be set.

The system can pre-read most 15 blocks to foreknow the path and speed to get the high speed and smooth of small block, at the same time, it can select Hemert sample interpolation function, applied to the mold machining. The acceleration/deceleration before/after interpolation can be selected in the cutting. The acceleration/deceleration before interpolation can select the linear or S ones, the acceleration/deceleration after interpolation can select the linear or exponential ones, and the acceleration/deceleration time constant can be set.

M instruction

Miscellaneous function M: Specified by the sequential 2 digits after address M.

Special M instructions(cannot be defined again):end of program M02, M30; program stop M00; optional stop M01; subprogram calling M98; end of subprogram M99.

M codes are defined by the standard PLC: M03, M04, M05, M08, M09, M10,M11, M12, M13, M16, M17, M19, M21, M22, M32, M33

T instruction

Tool function: ก๑T2 digistsก๑256 group tool offset ก๑tool position offsetก๑ tool length compensation ก๑tool nose radius compensation ก๑ communication input of tool offset valueก๑ tool length measurement

Spindle speed control

Spindle function S: ก๑S 2 digits ฃจ I/O gear input and output ฃฉ / S 5 digits ฃจ analog output ฃฉ ก๑max spindle speed limit ก๑ constant surface speed

Spindle encoder: resolutions can be set ฃจ 100 กซ 5000p/r ฃฉ

Transmission ratio between encoder and spindle ฃจ 1 กซ 255 ฃฉฃบฃจ 1 กซ 255 ฃฉ

Automatic compensation

ก๑Storage bidirectional compensation of pitch error: compensation points can be set. It is used for compensating the error resulted by machine position(such as the pitch error of the feed screw ) to improve the machining precision. The compensated data as parameters are stored in storage.

ก๑Backlash compensation: it can set the machine's momentum loss compensated by the fixed frequency or acceleration/deceleration.

Tool length compensation: it is done by the specified G code (G43 ฃฌ G44 ฃฌ G49); the vertical plane can be selected by parameters.

ก๑ Tool nose radius compensation (G40 ฃฌ G41 ฃฌ G42): C tool compensation

Max. compensation value: กภ 999.999mm or กภ99.9999inch.

Reliability and safety

ก๑emergency stop ฃป ก๑overtravel ฃป ก๑stored stroke limit ฃป ก๑NC ready signal ฃป ก๑servo ready signal ก๑MST completion signal ฃป ก๑automatic run start light signal ฃป ก๑ automatic running signal ฃป ก๑feed hold light signal

NC alarm: ก๑program or operation error ฃป ก๑overtravel error ฃป ก๑servo system error ฃป ก๑connection error, PLC error ฃป ก๑storage ฃจ ROM and RAM ฃฉ error ฃป over 300 alarms classified into 5 categories to provide the stable operation and rapid troubleshooting for the system .

Historic alarm and operation record

Self-diagnosis function to check the followings: ก๑ system abnormity ฃป ก๑ position control abnormity ฃป ก๑ servo system abnormity ฃป ก๑RS232 reading abnormity ฃป ก๑ PC data transmission abnormity and so on.

Operation function

ก๑ dry run ก๑ interlock ก๑ single block ก๑ optional block skip ก๑ Manual absolute ON/OFF ก๑ M.S.T. lock

ก๑ machine lock ก๑ feed hold ก๑ cycle start ก๑ emergency stop ก๑ external reset signal ก๑ external power ON/OFFก๑ Manual continuous feed ก๑ incremental feed ก๑ MPG ก๑ skip ก๑additional optional block skip ก๑ sequence number search ก๑ program number search ก๑ external data input ก๑ program restart ก๑ menu switch ก๑ graphics displayก๑ MPG interruption

Display

ก๑10.4 inch 640จw480 chromatic LCDก๑ machine coordinates, absolute coordinates, relative coordinates, residual movement

ก๑ User program ก๑ current operation mode ก๑ system parameter, diagnosis number, alarm number, macro variables, tool offset setting, MDI commands, MST

State ก๑ actual feedrate, spindle speed ก๑ machining path display ก๑ real-time wave diagnosis

ก๑System running time and other NC instructions and state messages

Program edit

Program capacity: 56M , max. 400 programs, customer macro calling and 4-level subprogram built-in are available

Background edit, absolute, relative coordinate and complex coordinate programming are supported

PLC function

Control mode: cycle run; processing speed: 3ฆฬs/per basic instruction; max. 3000 steps

IO unit input point/output piont: 48/48, expandable

Development method: PLC instructions or ladder

Instruction amount: 40 including 10 basic instructions, 30 functional instructions

DNC function ALCE

Serial DNC, and the baud rate can be set

Communication

Standard RS-232 and USB interface

Bidirectional transmission of programs, parameters and ladder between CNC and PC

Support Manual

Controller 218M for milling/ drilling manual A
Controller 218M for milling/ drilling manual B