• Adopt SIEMENS 840DSL high-grade numerical control system to realize seven-axis three linkage.

• Number of control axes

X-axis: grinding wheel frame transverse feed movement configuration grating ruler full closed-loop control

Z axis: the longitudinal movement of the working table configuration grating ruler full closed-loop control

C axis: headstock spindle rotary motion configuration angle encoder full closed loop control

V-axis: full closed-loop control of grating ruler configured for vertical movement of dresser slide

W axis: the horizontal movement of the dresser carriage is configured with the full closed-loop control of the grating ruler.

Axis A: grinding wheel frame spiral lift angle automatic adjustment movement

SP axis: rotary motion of grinding wheel spindle

• Pitch error of thread test piece:

• For threads with a pitch of less than 6mm, the accuracy is:

Adjacent pitch error: 4μm

On 25mm length: 7μm

Over 100mm length: 8μm

At 300mm in length: 11μm

• Screw test piece:

(1) Measurement method

The lead accuracy of the screw is accepted according to the thread detection method, the profile accuracy of the screw is detected according to the shape of the screw end face or the coordinates of the screw surface, and the error value of the screw space surface coordinates and the theoretical coordinates in the normal direction of the surface is compared.

(2) Accuracy

Screw lead accuracy: acceptance according to thread standard test piece, 9μm in length at 300mm.

Screw profile accuracy: 0.03mm.

• High-power built-in synchronous motor and high-precision rolling bearing combination of grinding wheel spindle, so that the workpiece grinding efficiency and surface quality greatly improved;

• Multiple optimized CNC grinding wheel dresser makes the dressing accuracy of various shapes of grinding wheels higher and the dressing flexibility better;

• Configuration of constant temperature, large flow, double filtration cooling system, so that the screw rotor processing accuracy by the temperature of the impact greatly reduced;

• Constant temperature, large flow, double filtration cooling system upgrade and multi-point workpiece shower cooling device development, so that the ball screw machining accuracy is greatly reduced by the degree of temperature;

• Intelligent grinding software, through human-computer interaction flexible and convenient to achieve a variety of grinding wheel shape dressing and different workpiece grinding;

• Green manufacturing technology to enhance the overall machine safety and environmental protection, overall enhance the machine hydraulic, lubrication system leak-proof, anti-seepage technology and guide rail, motor, grating protection system.

• Maximum installation diameter: Φ320mm

• Top distance: 1200mm

• Maximum longitudinal stroke of the table: 1000mm

• Maximum grinding thread diameter: Φ320mm

• Grinding screw lead: 950mm

• Maximum depth of grinding screw: 60 mm

• Maximum helix angle of grinding thread: ± 60 °

• Number of grinding thread heads: 1~99 (arbitrary)

• Head frame spindle speed (C axis):0.5 ~ 50r/min

• Grinding wheel size

Diameter: Φ500mm ~ Φ350mm

Inner diameter: Φ203mm

Thickness: 60, 80, 100, 120mm

• Grinding wheel spindle speed: 1910r ~ 2750r/min

• Maximum workpiece weight: 350kg

• Machine weight: about 8500Kg