In precision grinding operations, the cutting performance of grinding wheels directly impacts workpiece surface quality and machining efficiency. As grinding processes evolve toward higher precision and efficiency, traditional dressing tools struggle to meet the demand for precise control over wheel morphology. Diamond dressing pens, with their unique structure and performance, have become essential tools for enhancing grinding accuracy.
I. Structural Composition and Application Scope
Core Structure
Diamond Component: Divided into natural and synthetic diamond types. Natural diamond offers exceptional hardness and wear resistance, suitable for high-precision dressing tasks; synthetic diamond provides lower cost and meets routine processing needs, primarily used to remove aged abrasive grains and residual debris from pores, restoring grinding wheel cutting performance.
Shank Section: Manufactured from metal materials, it supports the diamond segment and provides clamping/positioning functions. It must remain secure and vibration-free during dressing to ensure processing stability.
Scope of Application
Compatible Grinding Wheel Types: Ceramic-bonded wheels, resin-bonded wheels, and wheels made from corundum (e.g., aluminum oxide) or GC abrasives (green silicon carbide). Particularly suitable for dressing high-hardness wheels with low wear rates.
Compatible Equipment: External cylindrical grinders, internal cylindrical grinders, centerless grinders, etc., covering various machining scenarios including external cylindrical grinding of shaft components, internal cylindrical grinding of bore components, and centerless grinding.
II. Shank Structure and Corresponding Fixtures
The shank structure directly impacts clamping accuracy. Different structures require specialized fixtures for efficient operation:
Standard Cylindrical Shank
Features: Features a standard cylindrical design with high versatility and easy installation/removal.
Compatible Fixtures:
Drill Press Vise: Suitable for general grinding applications requiring ≤0.05mm clamping accuracy. Enables quick fixation and prevents wobbling, but not recommended for high-precision dressing.
Hydraulic puller: Achieves uniform clamping via hydraulic drive with adjustable force. Suitable for dressing pens with shank diameters ≥10mm, effectively reducing clamping stress to meet medium-precision machining needs.
Shank with locating platforms
Features: Circular shank machined with four locating platforms parallel to the axis, achieving positioning accuracy ≤0.005mm.
Compatible Fixtures: Requires dedicated fixtures with locating grooves. Achieves bidirectional positioning via “face-to-face fit,” effectively preventing radial rotation and vibration. Suitable for high-precision grinding applications such as bearing rollers and precision molds, ensuring grinding wheel roundness error is controlled within ≤0.002mm.
