CNC High Precision Internal Grinding Solution

What is High Precision Ball Screw

Usage: Ball screw nuts are combined with screw screws to achieve rotational/linear motion conversion, which is the core component of precision devices such as CNC machine tools, industrial robots, and semiconductor equipment.
Material/geometric features:

• Material: High-strength materials such as stainless steel, alloy steel, titanium alloy, etc
• Structure: Complex internal threads (arc/trapezoidal section), thin-walled deep cavities
• Size: Small (φ16-φ100mm) to medium, tolerance requirements ± 0.005mm
  Common Risks:
• Machining problems: thread deformation, surface burns, pitch over-error
• Limitations of Traditional Processes: Relying on manual adjustments, resulting in unstable accuracy and low efficiency

High Precision Internal Grinding Core Pain Point

Pain point 1: Insufficient traditional processing accuracy

• Efficiency impact: multiple rework, 20% longer production cycle
• Cost impact: increase the cost of labor/tools by 500 yuan/piece
• Quality impact: scrap rate up to 15%

Pain point 2: Multi-process clamping error is large

• Efficiency impact: 30% of clamping time, 25% reduction in overall efficiency
• Cost impact: The cost of equipment switching increases by 300 yuan/batch
• Quality impact: Cumulative error leads to a defective rate of 12%

Pain point 3: Complex threading is difficult to process

• Efficiency impact: 40% increase in arc threading time
• Cost impact: 40% increase in the loss rate of specialized tools
• Quality impact: 10% non-compliance rate of cross-sectional shape

High Precision Internal Grinding Process

Complete processing link:

1. Blank preparation: forging/casting→ heat treatment→ rough turning
2. Roughing: Ordinary lathe/milling machine removes the allowance
3. Finishing: CGK-7630 CNC female thread grinding machine (core link) → grinding internal threads
4. Surface treatment: cleaning→ rust prevention→ polishing
5. Quality Inspection: 3D measurement→ pitch accuracy testing→ surface roughness testing
   CGK-7630 realizes high-precision grinding in the finishing process, which directly determines the final quality of the product, connects roughing and testing, and reduces clamping errors.

Key points of the sub-link

Finishing (core link)

• Specific method: Use CGK-7630 for internal thread grinding, automatic adjustment of the spiral lift angle (A-axis), →grinding wheel trimming (diamond roller), → precision grinding
• Parameter range: grinding wheel speed 20000rpm, feed rate 0.05-0.1mm/min, cutting depth 0.002-0.005mm
• Risk control: real-time feedback of the grating scale (Heidenhain) → avoid over-deviation; Water chillers force cooling → prevent surface burns
• Core equipment: CGK-7630 CNC female thread grinding machine

Grinding wheel trimming

• Specific method: King Kong roller correction electric spindle (Veuclicquot) → programmable trimming of any shape grinding wheel
• Parameter range: trimming speed 1500rpm, feed 0.02mm/r
• Risk control: The removal volume is self-compensating → ensuring the accuracy of the grinding wheel profile
• Core equipment: CGK-7630 built-in trimming system

Quality inspection

• Specific method: coordinate measuring instrument → detect pitch/cross-section shape; The roughness meter → test the Ra value
• Parameter range: measurement accuracy ± 0.001mm
• Risk control: Multi-dimensional detection → prevent the outflow of defective products
• Core equipment: coordinate measuring instrument

High Precision Internal Grinding Earnings Data

Indicator	Traditional Equipment	CGK-7630	Improvement Rate
Pitch Accuracy	0.01mm/2mm	0.005mm/2mm	50%
Production Efficiency	5 pcs/hour	7 pcs/hour	40%
Scrap Rate	15%	3%	80%
Tool Wear	10 pcs/tool	15 pcs/tool	50%

Contact us for further consultation on cooperation details or customized solutions. We look forward to partnering with you to create mutual value!