What is High Precision Internal Thread
Valve Female Threads: The “Sealing Core” of Fluid Control Systems
Usage: Valve female thread is a key structure connecting pipes and valves, directly affecting fluid sealing performance, and is widely used in petrochemical, water treatment, power and other industries.
Material/geometric features:
- Material: Stainless steel (304/316), superalloy (Inconel), titanium alloy and other corrosion/high temperature resistant materials
- Structure: Thin wall (≤5mm), complex section (arc/trapezoid), precision tolerance (±0.01mm)
Common Risks: - Traditional processes (turning/tapping) are prone to thread deformation, irregular tooth shape, and wear of the sealing surface
- Large manual adjustment error and poor mass production consistency
High Precision Internal Grinding Core Pain Point
Pain point 1: Insufficient precision leads to valve leakage
- Efficiency impact: 18% rework rate and 25% longer production cycle time
- Cost Impact: Approximately $2000 per batch added to rework costs
- Quality impact: 12% increase in customer complaint rate
Pain point 2: The switching efficiency of multi-thread type is low
- Efficiency impact: Traditional equipment requires 2 hours to change, reducing the daily production capacity by 15 pieces
- Cost Implications: Labor adjustment fees increase by $150/day
- Quality impact: 10% scrap rate of the first article after remodeling
Pain point 3: Superalloy processing is difficult
- Efficiency impact: 50% more time spent on processing superalloy threads with conventional equipment
- Cost Implications: 30% tool loss rate, an additional $3,000 per month
- Quality impact: thread burn rate up to 15%
High Precision Internal Grinding Process
Blank preparation → Rough inner hole/end face → Semi-finished turning thread preforming → CGK-7630 Fine grinding thread → Surface polishing → Quality inspection
The core position of CGK-7630: fine grinding thread link, high-precision grinding through closed-loop control
Connection logic: Semi-precision machine is directly clamped to CGK-7630 to reduce secondary clamping error; Seamless docking polishing/inspection after grinding ensures consistent quality
Fine grinding thread link
- Specific method: Use the diamond roller to trim the grinding wheel→ set the thread section parameters→ and control the X/Z/A axis linkage grinding with a full closed-loop grating ruler
- Parameter range: grinding wheel speed 20000rpm, feed rate 0.02-0.05mm/r, screw lift angle ± 10°
- Risk control: the water chiller cools the spindle at a constant temperature (±0.5°C) to avoid thermal deformation; Real-time monitoring of grinding wheel wear and automatic compensation for trimming amount
- Core equipment: CGK-7630 CNC internal thread grinder, German Heidenhain grating ruler
Quality inspection link
- Specific method: CMM detects thread pitch/tooth profile/roughness → pressure test to verify sealing performance
- Parameter range: measurement accuracy ±0.002mm, pressure test 0-10MPa
- Risk control: Set SPC statistical process control, automatic alarm for data exceeding the standard
- Core equipment: ZEISS coordinate measuring instrument, hydraulic seal test bench
CGK-7630 CNC Internal Thread Grinding Machine
High-precision CGK-7630 CNC Internal Thread Grinding Machine features Siemens servo drive & HEIDENHAIN scale, 0.005mm pitch accuracy & Ra≤0.32μm finish. Grinds φ16-φ100mm threads, boosting efficiency by 40% for precision machinery manufacturing.
High Precision Internal Grinding Earnings Data
| Indicator | Traditional Process | CGK-7630 | Improvement Range |
|---|---|---|---|
| Thread Accuracy | ±0.02 mm | ±0.005 mm | 75% Improvement |
| Production Efficiency | 50 pcs/shift | 80 pcs/shift | 60% Improvement |
| Scrap Rate | 15% | 2% | 87% Reduction |
| Maintenance Cost | $1200/month | $800/month | 33% Reduction |
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