18YRS
JAINNHER MACHINE CO., LTD.
886-4-23585299
886-4-23594803
No. 333, 28th Rd., Taichung Industrial Park, Taichung, Taiwan
www.jainnher.com

Products

Center Hole Grinding Machine
JHG-1510 Center Hole Grinder
JHG-1510

The machine is suitable for cuting tool, spindle, tool holder, gear shafts and tempered transmission shafts and the workpiece requests high accuracy from cylindrical grinding. The quality of cylindrical grinding will depend on the center holes circular geometrical accuracy.

Specification

  • Upper Swing center and Lower Center Device Keep upper swing center ad lower center consistency benchmark.

Workpiece Holding Device

  • Automatic workpiece clamping simplify the setting job.(can be based on processing needs and provide different clamping devices)

Workpiece Driving Device

  • While grinding, the workpiece driven simultaneous.It improves the center hole and cylindrical concentric accuracy, the speed can be changed by frequency converter.

Hydraulic Tailstock Work Head

Exclusive Design of Grindling Operation

  • With exclusive 3D design of synchronized grinding motion, the machine will be very stable and automatically locates center.
  • 1.Grinfing wheel rotation.
  • 2.Planetary motion of grinding wheel spindle
  • 3.Grinding wheel reciprocating motion will be along conical surface.
  • Based on three-axis simultaneous grinding action, grinding out heterogeneous pattern, with a small oil groove feature, oil film can be formed in a permanent between workpiece and center of cylindrical grinding machine.This is to prevent non-film stuck with the center and can eliminate unnecessary error, in order to facilitate high quality cylindrical grinding.

One-piece Fabricated Base 

Grinding Wheel Spindle Head

  • Grinding wheel spindle head is combination of the spindle head, planetary motion mechanism, wheel spindle, dressing device and spindle motion mechanism.
  • Rotating of grinding wheel spindle driven by 1/2HP x 2P motor, through the appropriate pressure tension of idler, driving wheel spindle in high speed rotating.The speed can be changed by frequency converter.
  • Planetary transmission device adopt 1/5HP x 8P motor, which can be simultaneously doing wheel spindle planetary motion and reciprocating motion along on conical surface.
  • Grinding wheel spindle use sleeve design, easy assembling, with 4 high-speed precision P4 class Angular ball bearings support in front and back and oil mist lubrication, have high speed and precision characteristics.

Exclusive design of grinding operation

  • The atomizer device for grinding wheel spindle connect with 1~8kg/cm² compressed air, therefore, the oil mist produced 1.5~2kg/cm² pressure for lubrication.

20000 rpm
Grinding stone dressing device Travel of dressing diamond 40 mm
Vertical travel for one revolution of wheel 1.5 mm
Horizontal travel for one revolution of wheel 1.5 mm
Electric power supply Voltage & spindle 3PH 220V 60Hz
Capacity 1.9 KVA
Weight Net Weight 630 kg

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