Application of HNC-818B/T CNC System in the Upgrade for U.S.A Hardinge COBRA42 CNC Lathe
I. Customer Site Introduction
The COBRA42 full-function CNC lathe to be transformed was introduced from Hardinge, USA in 2002. The original CNC system adopts the FANUC system. The machine tool has three servo axes: X/Z/turret rotary axis, semi-closed loop control, and the spindle is a servo spindle. The machine tool was in a shutdown state before the transformation, the components in the numerical control system and the electrical system were aging, and the geometric accuracy had been partially lost.
![cobra-42-full-function-cnc-lathe-before-retrofitting](https://en.huazhongcnc.com/wp-content/uploads/2022/04/cobra-42-full-function-cnc-lathe-before-retrofitting.jpg)
II. Retrofit Solution
1. The configuration of CNC system devices, servo drives and motors are as follows:
Serial Number |
Product Name |
Specifications & Model |
Quantity |
1 |
HNC-818B/T system device |
10.4 inch color screen; 2-axis linkage function. |
1 set |
2 |
Feed shaft drive |
HSV-180UD-035C |
3 sets |
3 |
Spindle drive |
HSV-180US-100R |
1 set |
4 |
Feed axis servo motor |
130ST-M09620HMBBZ/C |
1 set |
130ST-M09620HMBB/C |
1 set |
||
110ST-M06415HMBB/C |
1 set |
||
5 |
Spindle servo motor |
GM7109-4SB61-O-b |
1 set |
2. Main functions of CNC system for machine tool applications:
The transformation of COBRA42 full-function CNC lathe mainly applies two-axis linkage function, coordinate system setting function, linear interpolation function, circular interpolation function, thread processing function, MDI and M, S, T functions, processing graphics simulation function, canned cycle features of HNC-818B/T CNC lathe controller system.
![hnc-818b-tu-cnc-system](https://en.huazhongcnc.com/wp-content/uploads/2022/04/hnc-818b-tu-cnc-system-1014x1024.jpg)
3. The main contents of the upgrade are as follows:
-Use HuazhongCNC HNC-818B/T CNC system, supporting servo motor and servo drive for transformation;
-Overhaul the feed shaft ball screw and replace the screw bearing;
-Check and repair the main shaft and replace the main shaft bearing to ensure the accuracy and speed of the main shaft;
-Overhaul the power turret and hydraulic tailstock;
-Overhaul the hydraulic, lubrication, cooling, and pneumatic systems of the machine tool and replace damaged parts;
-Redesign the electrical control schematic diagram of the machine tool, replace the electrical control and electrical components and re-wiring.
-Restore the accuracy and function of the original machine tool.
III. The Effect after the Transformation
![cobra-42-turning-center-after-retrofitting](https://en.huazhongcnc.com/wp-content/uploads/2022/04/cobra-42-turning-center-after-retrofitting1.jpg)
![cobra-42-turning-center-after-retrofitting](https://en.huazhongcnc.com/wp-content/uploads/2022/04/cobra-42-turning-center-after-retrofitting2.jpg)
After the equipment transformation is completed, the accuracy of the machine tool and all functions have been restored, and the operation is stable; it is mainly used to process the shaft pin parts, fully meeting the process requirements of the customer.