Screws
Raceway Superfinishing & Rolled Screw Descaling
Polishing & Superfinishing
Reduce Noise. Extend Service Life.
Precision Processing of Working Surfaces
From Surface Quality to Friction and Lubrication
Polishing and superfinishing use abrasive stones, wheels or belts to improve surface properties such as roughness and waviness. Depending on the application, the process removes oxide scale or creates a surface lay that helps reduce friction and retain lubricant, supporting lower noise and longer service life.
Ruiming combines process design with equipment control. Raceway oilstone superfinishing uses direct servo-driven high-frequency oscillation and automatic raceway detection; longitudinal rack-back polishing uses gravity balancing to apply constant pressure. Vertical and horizontal machine configurations are matched to the workpiece and processing area.
Polishing Workpiece Examples
Screws, ball nuts, racks and plain shafts require different polishing processes according to the working surface and target finish.
Ball Nuts
Internal Raceway Oilstone Superfinishing
Racks
Longitudinal Polishing, Belt Polishing, Brushing & Deburring
Plain Shafts
Surface polishing; process selection depends on the workpiece
Solutions for Other Workpieces
Share your workpiece drawings, incoming condition and surface requirements so we can assess a suitable process together.
Industries
Distinctive Polishing & Superfinishing Technologies
SUPERFINISHING
Direct Servo-Driven Raceway Superfinishing
A servo motor directly drives high-frequency oilstone oscillation to improve raceway roughness, waviness and profile accuracy.
High-precision sensors provide automatic raceway detection. As the oilstone wears, screw superfinishing machines feed it automatically; ball nut superfinishing machines replace it automatically.
The processing image is temporarily unavailable. CONSTANT PRESSURE
Gravity-Balanced Constant-Pressure Polishing
The vertical longitudinal rack-back polishing machine uses a gravity-balanced polishing unit to apply a selectable constant polishing force.
The process produces a lay parallel to the workpiece axis, helping reduce friction and noise. Automatic tool setting and profiling help extend polishing wheel life.
The processing image is temporarily unavailable. SURFACE TEXTURE
Cross-Hatch Texture & Surface Lubrication
During belt polishing, workpiece rotation combines with high-frequency axial movement of the belt or workpiece to produce a cross-hatch texture that helps retain lubricant and form an oil film.
The processing image is temporarily unavailable. DESCALING
Descaling & Automatic Wheel Adjustment
Rolled screw descaling machines feature automatic raceway detection, polishing wheel feed, tool setting and profiling.
Polishing force is set to suit the process. Dust is handled by coolant flushing or extraction.
The processing image is temporarily unavailable. INLINE AUTOMATION
Automated Tooth Processing & Line Integration
Rack tooth-surface polishing and tooth-side deburring machines support automatic tooth-surface detection, loading, unloading and polishing or deburring.
The tooth-surface polishing machine can operate in line with an upstream automatic straightening machine and downstream longitudinal polishing machine.
- Automatic Straightening Machine
- Tooth-Surface Polishing Machine
- Longitudinal Polishing Machine
The processing image is temporarily unavailable. Polishing Machine Series
Lead Screw Raceway Superfinishing Machine
Direct servo-driven oscillation. Automatic oilstone feed.
Nut Raceway Groove Microfinish Machine
Internal raceway oilstone superfinishing. Automatic oilstone replacement.
Oxide-scale Removal & Polishing Machine for Rolled Screws (Brake & RP-screw)
Braking & RP screws. Descaling and polishing.
Oxide-scale Removal & Polishing Machine for Transmission Rolled Screws
Rolled transmission screws. Automatic wheel profiling.
Rack Longitudinal Polishing Machine
Gravity-balanced constant force. Longitudinal surface lay.
Rack Longitudinal Abrasive Belt Polishing Machine
Rotation and high-frequency axial movement. Cross-hatch surface texture.
Rack Tooth Brushing Machine
Center-driven workpiece. Tooth brushing for descaling.
Rack Deburring Machine (Abrasive Belt & Steel Brush)
Abrasive belt and steel brush. Rack tooth-end deburring.
Start with Your Workpiece and Process Requirements
Share drawings, incoming workpiece condition, target surface requirements and cycle time to discuss the process and equipment configuration with Ruiming.
Discuss Your Process
Technical Inquiries jilinruiming@163.com