Features of the machine tool performance and structure

With advanced international level, B2-K1018 double wheel head follow-up CNC crankshaft grinding machine is independently designed, developed and manufactured by the Company on the basis of digestion & absorption overseas advanced technologies and rich experience of designing and manufacturing CNC grinding machines.

With the advanced technology of follow-up swing type grinding rod journal, and by means of CNC linkage between two grinding wheel feed axes (X1 and X2 axis) and workpiece rotation axes (C1 and C2 axis) as well as on-line measurement under full closed loop control, synchronous grinding of rod journals with different phrase, one main journal and one rod journal or two main journals on crankshaft can be realized, thus thoroughly resolved the weakness of poor flexibility and hard to adjust on the traditional eccentric clamp type crankshaft grinding machine. As the equipment of easy to operate, reliable performance and high machining precision, the machine tool is capable of one-time clamping to ensure the accurate batch processing of the rod journal, main journal and thrust surface of the crankshaft.

With the rational layout and integral protective cover, the machine tool is convenient for maintenance and in conformity with human engineering requirements.

The grinding wheel spindle features high rotary precision and good rigidity. The linear speed of the CBN grinding wheel can reach 120m/s.

With the layout of fixed worktable and double wheel head cross-shaped sliding table backward movement, the feeding and movement of wheel head (X1, X2, Z1, Z2 axis) is realized.

The feeding of wheel head (X1 and X2 axis) is driven by linear servo motor and equipped with closed hydrostatic guideway. Its minimum setting unit is 0.1μm and maximum fast forward speed reaches 40m/min, the requirement of kinematic accuracy for grinding rod journal is fulfilled.

The movement of wheel head sliding table (Z1 and Z2 axis) is driven by AC servo motors and ball screw.

Adopted high-accuracy rolling bearing-supported structure and equipped with angle encoders as well as under the closed loop control, high rotation and positioning accuracy will be realized on the rotary axes of workpiece (C1 and C2 axis).

The machine tool is provided with advanced international famous brand active measuring device, thus realizing the closed-loop control of grinding process.

With the crank rod journal follow-up grinding software and specific grinding interface software for customer put into use, high precision follow-up grinding and real time compensation is realized on one time clamp for processing crankshaft parts.

Specifications

Working accuracy (main journal/rod journal)

Layout plan