GSK25i is a high-performance CNC system characterized by its powerful functions and simple operation. It is applicable to the multi-function machining centers, boring machines, milling machines and drilling machines with 3~5 axis linkage.

1. GSK25i is a high-performance CNC system characterized by its powerful functions and simple operation. It is applicable to the multi-function machining centers, boring machines, milling machines and drilling machines with 3~5 axis linkage.

 

2. GSK25i adopts a high-performance hardware platform and Linux operation system. It supports up to 8 axes with 5-axis linkage, and provides five-axis control functions, such as five-axis RTCP (tool center point control), inclined plane (3+2 positioning) machining and five-axis manual feeding. In addition, it supports the feed axis synchronization and PLC axis control as well.

 

3. The system employs GSK-Link industrial Ethernet bus and servo real-time communication. When matched with GH series servo unit (high speed and high precision) and servo motor with a high-resolution absolute encoder, it can realize a positional precision of 0.1|m; with the adoption of PID position closed loop, and featured by its advanced preview ability (preview up to 2000 blocks), path smoothing ability and 1ms interpolation cycle, the system realizes high-speed and high-precision machining for small line section as well as the machining for mold parts.

 

4. Open PLC; support for PLC online editing, diagnosis, signal tracking functions; I/O points can be extended to 1024/1024 at most, thus satisfying the control of large-scale and complicated devices.

 

5. GSK25i realizes DNC machining and data transmission through USB interface and network interface based on TCP/IP. By using the upper PC software, it realizes remote monitoring, remote diagnosis and remote maintenance, network, DNC function and three-dimension simulation running by G code.

Applycase

Advanced hardware

1.High-performance and high-configuration hardware platform, which satisfies the demands for complicated operation and machining, such as five-axis linkage and high-speed and high-precision machining.
2.GSK-Link real-time industrial Ethernet bus control, integrated cabinet, high-resolution LCD, small size and simple connection. 
3.Aluminum alloy front panel, stainless steel rear panel, firm and durable

Five-axis machining function 8 controlled axes with 6-axis linkage

1.8 controlled axes with 6-axis linkage
2.Applicable to five-axis machines with worktable swinging, tool swinging or both.
3.Five-axis RTCP (tool center point control)
4.Inclined plane machining (3+2) positioning
5.Five-axis manual feed

High-speed and high-precision machining

1.Advanced preview control (up to 1000 blocks), linear acceleration/deceleration before interpolation, S acceleration/deceleration before interpolation
2.Jerk control
3.NUBRS interpolation
4.Multiple on-line path smoothing modes, coordinating the work efficiency and surface quality in different types of machining.
5.G05 P1  Broken line transition mode
6.G05 P2  Bezier smoothing mode
7.G05 P3  B spline smoothing mod

High-performance servo system

1.High dynamic response servo motor, current loop cycle as short as 100|s
2.Servo parameter dynamic self-adjustment
3.Servo motor equipped with a 17-bit (131072 lines) high-resolution absolute encoder, which improves the machining precision and surface quality to a new level.
4.Absolute encoder. No need to return to the zero point each time the system is started up.
5.Large-capacity memory, 240M standard configuration, which can be extended to 500M.
6.Operations for program editing: New, Modify, Copy, Cut, Paste, Search, Replace.
7.Plenty of macro commands and canned cycles, convenient for effectively completing complicated machining.
8.Data transmission through U disc and network, DNC.
9.Simple debugging and maintenance, detailed alarm and diagnosis message.
10.Multi-level authority management.
11.User-defined interfaces for secondary development.

PLC function

1.Ladder diagram programming.
2.Basic command process time: 0.5|s/step, program capacity: 12000 steps.
3.10 basic commands, 49 function commands.
4.Open PLC, PLC program can be modified and edited on the system.
5.Multiple PLC program select storage, run program selectable.
6.PLC axis control function.

No.	Designation	Specification
Axis control function
1	Controlled axes	Up to 8 controlled axes plus 1 servo spindle
2	Linkage axes	3-axis linkage
		4-axis linkage
		5-axis linkage
3	PLC axis control controlled axes	Up to 4 axes
4	Feed axis synchronous control	Up to 4 groups
5	Position detection device	Pulse encoder (absolute), grating ruler (absolute)
6	Least command increment	Least command increment IS-B	0.001mm	0.0001inch	0.001°
		Least command increment IS-C	0.0001mm	0.00001 inch	0.0001°
7	Min. detection unit	Least command increment IS-B	0.001mm	0.0001inch	0.001°
		Least command increment IS-C	0.0001mm	0.00001 inch	0.0001°
8	Max. command value	±999999.9999mm      ±99999.9999inch      ±999999.9999°
9	Max. feedrate	Maximum feedrate: 200m/min
10	Automatic acceleration/deceleration	Linear, S curve acceleration/deceleration before interpolation, jerk control
11	High-speed and high-precision machining	G05 advanced preview of high-speed small line section, path smoothing, up to 1000 blocks can be previewed and pre-read.
Five-axis control function
1	RTCP function	Tool center point control G43.4
2	Inclined plane machining	Five-axis positioning (3+2) machining G68.2
3	Five-axis manual feeding	Manual feed in tool axial direction, tool axis right-angle direction, or tool center point rotation direction

Programming function
1	Program format	ISO command standard, program name: 0 + 4 digits,Block number: N + 5 digits;
		G+ 3 digits; coordinate value IpY6 digits before decimal and 4 digits behind decimal, S +5 digits, M + 3 digits, F + 6 digits before decimal and four digits behind decimal
2	Interpolation function	Positioning, linear interpolation, circular interpolation, helical interpolation, cylindrical interpolation, polar coordinate, spline curve interpolation.
3	Workpiece coordinate system	Basic coordinate systems: G52YG59; additional extensive coordinate systems JG54.1J: 48 groups
4	Tool compensation	C tool compensation function, 400 groups of tool compensation
5	Programming function	More than 100 G commands in total, including 12 types of common canned cycle, 19 type of special canned cycle and compound cycle, face milling, coordinate system rotation, scaling, mirror image, automatic measurement of tool length, tool center point control, inclined plane machining command, four nesting levels of subprogram call, B type user macro program.
6	Program storage	Program storage capacity: 240M, which can be extended to 500M. Number of programs storable:400
7	Reference point function	G27 Reference position return check; G28 Reference position return G29 Return from reference position; G30 2nd, 3rd, 4th reference point return
8	Skip function	G31 Skip function, used for measuring tool and workpiece
9	Programmable control function	Programmable stroke limit (G22, G23), programmable data input (G10)
Operation function and display function
1	Operation mode select	AUTO, MDI，EDIT, MANUAL，MPG，ZERO RETURN, DNC
2	ON/OFF operation	Single block, block skip, machine lock, auxiliary function lock, optional stop, dry run, restart, emergency stop, overtravel release, cycle start, feed hold, manual continuous feed, step, rapid traverse, MPG, spindle override, feedrate override, rapid traverse override
3	Setting	Tool length compensation measurement input, workpiece offset measurement input, parameter setting help, servo parameter setting.
4	Program operation	New, edit, delete, rename, search, copy, paste, read, transmission，background editing, dynamic graph simulation
5	Help function	Alarm message explanation, operation description, parameter description, macro command description, G command description, PLC address description, counter
6	Display	10.4 inch LCD with resolution of 800Y600, or 8.4 inch LCD with resolution of 640Y 480, Chinese/English display, dynamic graph, clock, process time, run time, part count, modal information, actual speed, hardware/software version, ladder diagram, alarm message, diagnosis message, alarm history, operation history.
Operation function and display function
1	M function	M code with 3 bits, multiple M code command, M code for calling macro command or subprogram
2	T function	T code with three bits, tool life management
3	S function	Y10V analog voltage output from analog spindle interface, digital spindle, S code with five bits, spindle speed setting, multiple spindle control, spindle orientation, M type and T type gear shift, floating taping, rigid taping, spindle override, spindle speed fluctuation detection
Precision compensation function
1	Backlash compensation	Separately compensates rapid traverse and cutting feedrate
2	Pitch compensation	Interpolation-type unidirection/bidirection pitch error compensation
Communication and data input/output interface function
1	Data interface function	Ethernet, USB and RS232 interfaces on the front panel, through which data transmission, DNC and network function can be realized.
2	Data input/output	Input/output programs, NC parameters, compensation values, offset values, macro variable values, PLC programs, PLC parameters input/output through data interface, Ethernet, USB interface or DNC.
3	Network function	Ethernet communication, network DNC, remote monitor, remote diagnosis, remote maintenance
4	I/O interface	Terminal block type I/O DI/DOJ64/48
		Flat cable type I/O DI/DOJ48/32J2 group 24/16J
		Flat cable analog I/O DI/DOJ24/16 AI/AOJ2 /2J12 bit DA ± 10V
		Max. extension points DI/DOJI024 points/1024 points
5	Servo drive interface	GSK-Link Ethernet bus interface
6	Interface of external position de-tection unit (for fully-closed loop)	Adaptive to HEIDENHAIN absolute grating ruler, angular encoder, Endat2.2 protocol, up to 6 axes.
PLC function
1	PLC specification	Built-in PLC, ladder diagram editing, command list programming compatible format;
		10 basic commands, 49 function commands;
		Two level programs，scan period of first level program: 8ms，basic command execution time: 0.5us/step
		Max. program steps: 12000. The ladder diagram can be displayed and edited on line, and be uploaded and downloaded.
		Intermediate relay (R)	1100 bytes (R0 toR1099)
		Data register (D)	1860 bytesJDO toD1859J
		Counter (C)	400 bytesJCO to C399J100 PCS
		Timer (T)	200 bytesJTO to T199J100 PCS
		Message display request signal (A)	32 bytes (A0 to A31)
		Keep relay (K)	32 bytes (K0 to K31)
		Skip Label (L)	9999JL1YL9999J
		Subprogram (P)	512JP1YP512J
Safety and maintenance
1	Safety function	Emergency stop, hard limit, 1 st soft limit, 1 st soft limit , 2nd soft limit, multi-authority data protection, spindle safety speed, feed safety speed, NC alarm, PLC alarm, servo alarm, following error monitor, servo OFF, interlock.
2	Maintenance function	Operation history, alarm history, machining history, CNC running state diagnosis, PLC interface diagnosis, data backup and recover for CNC and PLC data, speed wave form diagnosis, network diagnosis and maintenance, servo setting and servo load, state monitor and diagnosis.

GSK CNC Equipment Co., Ltd.