Single-point diamond dresser for grinding wheel based on acoustic emission online monitoring

A single-point diamond dresser for a grinding wheel based on acoustic emission online monitoring, comprising:

• a support module,
• an anti-interference module,
• a compression cooling module, and
• an acoustic emission online monitoring module;
• wherein the support module comprises a casing, a core and a waterproof sleeve;
• the waterproof sleeve is installed at the casing;
• threads are provided on an inner wall of the waterproof sleeve to connect to an external cooling pipe;
• the casing and the core are connected via bolts;
• a single-point diamond dressing pen is inlaid in the core and is configured to dress the grinding wheel;
• the anti-interference module comprises a damping sheet and a damping interlayer;
• the damping sheet is mainly configured to eliminate noise interference of a coolant on effective signals of an acoustic emission sensor;
• a first groove is provided at a middle of the damping sheet for inlaying the acoustic emission sensor, and a second groove is provided near an outer edge of the damping sheet for inlaying an elastic spacer;
• the damping interlayer is mounted in the casing and is mainly configured to eliminate interference of a vibration noise of a grinder and external environmental noise on the effective signals of the acoustic emission sensor;
• the compression cooling module comprises a container, a plurality of coolant passages and the elastic spacer;
• the elastic spacer is bonded to the core;
• after the coolant enters the container by flowing through the waterproof sleeve, an upward pressure is applied onto a lower surface of the damping sheet, resulting in an upward elastic deformation of the elastic spacer and the damping sheet, so that the acoustic emission sensor is compressed to increase a contact force between the acoustic emission sensor and the core, improving a sensitivity of the acoustic emission sensor;
• the coolant flows through the coolant passages in the core to cool a dressing area of the grinding wheel;
• The acoustic emission online monitoring module comprises the acoustic emission sensor, a wire and a flexible pipe;
• the acoustic emission sensor is inlaid in the first groove of the damping sheet;
• an upper surface of the acoustic emission sensor contacts the core with Vaseline as an acoustic coupling agent;
• the acoustic emission sensor converts an acoustic emission signal generated during dressing the grinding wheel to an electric signal, and the electric signal is transmitted to an external preamplifier via the wire;
• the wire is arranged in the flexible pipe;
• the flexible pipe, a first seal ring and a second seal ring are configured for waterproof sealing.