Diameter of inscribed circle of grindable workpiece	Φ5 mm ~ 32 mm
Maximum thickness of grinding workpiece	20 mm
Grinding wheel diameter	400 mm
Grinding wheel speed	12 ~ 30 m/s
Tailstock jacking force	2000 ~ 11000 N
Maximum clamping stroke of tailstock	25 mm
Maximum stroke of grinding wheel transverse feed (X axis)	150 mm
Maximum stroke of grinding wheel longitudinal feed (Y axis)	175 mm
Swing amplitude of grinding wheel	±10 mm
Swing frequency	0 ~ 2 Hz
Workpiece spindle (B axis) rotary range	Arbitrary
Rotary table (C axis) rotary range	-30° ~ 70°
Working dimensional accuracy	±0.012 mm
Profile error	0.01 mm
Cutting angle error	±10′
Surface roughness	Ra 0.2 μm

 

Technical Features

• The workpiece is automatically fed and unloaded by the manipulator of the feeding device.
• The center of the workpiece is automatically positioned by parameter modification for quick and convenient adjustment.
• The grinding wheel spindle is driven by an external motor and equipped with a balance weight to reduce thermal elongation effects and improve machining accuracy.
• The workpiece uses a hydraulic automatic clamping method with easily adjustable clamping force.
• Equipped with automatic measurement function for compensation according to measurement results.
• Real-time monitoring of the machining process for operator visibility and process control.
• User-friendly human–machine interface; programming and editing operations are simple.
• Fully enclosed protection system with an efficient oil-mist treatment device.

 

CNC System Configuration

CNC System: FAGOR 8055

• X axis: Transverse feed motion of the grinding wheel frame, full closed-loop control with grating ruler.
• B axis: Workpiece spindle rotary motion with angle-encoder full closed-loop control.
• C axis: Rotary table motion with angle-encoder full closed-loop control (optional).
• Y axis: Longitudinal reciprocating motion of the grinding wheel.
• SP axis: Rotational motion of the grinding wheel.

 

Machine Application

This machine is a four-axis CNC tool grinder designed for precision machining of hard-alloy or ceramic indexable inserts. It uses the imported FAGOR 8055 CNC system with real-time monitoring functions. The machine is equipped with automatic measuring, automatic clamping, and automatic loading/unloading devices. One single clamping operation can complete peripheral contour machining, chamfering, and edge rounding, making it ideal for high-volume production.  

Processable Insert Shapes

The machine can process various insert shapes such as triangle, square, rhombus (long diamond), polygon, and circle, in accordance with national standards:

• GB/T2078-2007
• GB/T15306.1-2008
• GB/T2080-2007
• GB/T15306.2-2008
• GB/T15306.3-2008

It can also perform machining for non-standard insert peripheral curves.