Sharpening of the mill is the final operation to ensure the required geometric parameters of the mill, as well as to restore the cutting properties lost as a result of wear of the teeth. Our company produces a special machine with a CNC model VZ-781F4, which grinds the teeth of the cylindrical cutter on the front and back surfaces with screw chip grooves. Sharpening is done by the elboric circle.

The list of motions of the working elements produced by the electric motor:

  • Rotation of the grinding wheel;
  • Turning the grinding wheel around the vertical axis;
  • Movement of the grinding wheel (Y axis) in the vertical direction;
  • The movement of the grinding wheel (Z-axis) is transverse;
  • Movement of the table (X-axis) through a ball screw transmission;
  • Rotation of the headstock of the product head (axis A);
  • Moving the tailstock pinol back by turning the handwheel through the screw gear;
  • Rotating the center of the headstock back while rotating the sharpened cutter.

Characteristic features of the CNC machine VZ-781F4:

  • The CNC system SINUMERIK 840D sl, which provides professional control of the semi-automatic machine, uninterrupted operation, the possibility of docking with a computer of the highest rank;
  • The base of the machine is a frame on which all assembly units and mechanisms are installed;
  • The presence of a coolant system that provides the supply of cooling fluid to the elbor wheel when sharpened;
  • The presence of harmonious protection of the guides, protecting them from chips and dust.

Video CNC machine for grinding cylindrical milling cutters VZ-781Ф4
The parameters marked with (*) are specified at the stage of the technical task coordination.
Product Indicators, machined:
Size of the blank to be installed Max. diameter of the cutter (complete with blades), mm 270
Min. diameter of the cutter (complete with blades), mm 240
The maximum length of the cutter, mm 2000
Cutting part length, mm 1200
The direction of the helix flute, mm right/left
Number of chip flutes, PCs 1...99
The cutting angle of the knives of the cutter, deg 0°...14°
Rear angle of the knives of the cutter, deg 0°...7°
Max. weight cutters, kg 500
Parameters of working and adjustment travels:
Max. working travels along controlled coordinate axes: Greatest travel of table (x axis), mm 1600
Maximum vertical displacement of the grinding wheel (Y-axis), mm 200
Maximum transverse movement of the grinding wheel (Z-axis), mm 200
Maximum angle of rotation of the grinding wheel in the horizontal plane (axis C) 222°
The angle of rotation of the spindle of the workpiece headstock (a-axis) is not limited
Number of controlled axes 5
Performance tool that is installed on the machine:
Dimensions of the installed wheel, mm The diameter of the grinding wheel type 1Е1(2) mm:
- exterior 200
- planting 32
Material circle: еlbor (СВN)
Maximum peripheral speed, m/s 35
Indicators of primary and secondary movements:
Discreteness of travel assignments along coordinate axes linear, mm 0,001
corner of 0.001°
Spindle speed, rev / min 1500....4000*
Indicators Power of machine:
Power of the main motion motor, kW The drive power of the grinding wheel, kW 3,0
The total capacity of electrical equipment, kW 17,53
Parameters of accuracy and roughness:
Аccuracy and roughness of samples machining The tolerance of front and rear corners of the teeth of the cutter ±1°
front Ra ≤ 1,25
rear Ra ≤ 0,63
Electrical equipment specifications
AC current frequency, Hz 50±1
Nature of supply AC, 3-phase
Voltage, V 380±38
Dimensional characteristics:
Dimensions (LxWxH) mm 5100x2400x2000 (with separately located equipment)
Weight, kg 5200

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CNC machine for grinding cylindrical milling cutters VZ-781Ф4

  • Product Code: VZ-781F4
  • Availability: Pre-Order