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DFC-400M Wheel Grinder

The brake-disc turning-and-grinding composite machine tool is a vertical, dual-face, dedicated composite machining equipment specifically designed for automotive brake discs. Its core feature is the ability to complete both turning and grinding in a single clamping operation, thereby eliminating the clamping errors, low efficiency, and large footprint associated with conventional sequential machining. It has become the mainstream solution for the high-precision mass production of brake discs.

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The brake-disc turning-and-grinding composite machine tool is a vertical, dual-end-face, dedicated composite machining center specifically designed for automotive brake discs. At its core, it enables simultaneous turning and grinding in a single clamping operation, thereby eliminating the common pain points of conventional sequential machining—such as clamping errors, low efficiency, and large footprint—and has become the mainstream solution for high-precision batch production of brake discs. It performs precision end-face grinding on both brake surfaces, achieving final specifications of Ra 0.4–1.6, DTV ≤ 0.004 mm, and parallelism ≤ 0.01 mm. By consolidating the two processes, machining time is reduced by 40%–60%, while delivering both turning and grinding capabilities for both brake surfaces. This reduces equipment handling and manual intervention, more than doubles production capacity, and allows a single unit to replace 2–3 conventional machines.

Project/Specification	Unit	DFC-400M
Control System		FANUC/Xindai
Spindle specifications	mm	φ120
Spindle rotation mode		Post-mounted electric spindle
Maximum Turning Diameter	mm	φ450
Maximum machining diameter	mm	φ420
Maximum machining height	mm	120
Maximum workpiece weight	kilogram	30
Chuck size	inch	12
Spindle speed	revolutions per minute	0-2000
Spindle end-face configuration	asa	A2-8
Main motor power	keyword	23
Rapid traverse speed	m/min	32
Positioning Accuracy (X/Z)	mm	±0.005
Repositioning Accuracy (X/Z)	mm	±0.004
Workstation		Two precision turning stations, one boring tool
Tool change speed	s	2
Tool Specifications	mm	20 * 20; φ40
Machine tool weight	kilogram	7000
Machine tool dimensions	mm	2470 * 1850 * 2650