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HOME >> PRODUCTS >>Transformer Auxiliary Processing >> CNC Automatic Transformer Winding Spacer Milling Machine for Dovetail & Straight Groove (110kV-1100kV)
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CNC Automatic Transformer Winding Spacer Milling Machine for Dovetail & Straight Groove (110kV-1100kV)

The CNC Winding Spacer Forming Machine is a dedicated solution for power transformer insulation machining. Designed for 110kV-1100kV applications, it delivers high-speed, high-precision grooving (dovetail/straight) with intuitive HMI programming and built-in processing libraries. The compact, enclosed structure (2mm steel + toughened glass) integrates sound absorption and vacuum dust extraction, ensuring a clean workshop and operator safety. With 4 motorized spindles and robust heat-treated construction, it achieves ±0.2mm accuracy at 2-5m/min feed, maximizing efficiency while maintaining flawless surface quality.



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Description

1. Core Features & Advantages

① Intelligent CNC Programming

Intuitive human-machine interface with built-in block processing libraries for quick calling. Programs stored in controller memory; real-time monitoring system for seamless operation. Easy-to-learn programming reduces setup time.

② High-Speed 4-Spindle Machining

Adopts four high-speed motorized spindles as milling heads. Saw head speed 3000 r/min; arc/slot knife speed 9000-24000 r/min. Short working table stroke (compact design) enables rapid machining: saw head movement 2-5 m/min.

③ Ultra-Precision & Stability

Machining accuracy: block length ±0.2mm, groove depth ±0.2mm, rabbet center overlap ±0.15mm. Ensures longitudinal/lateral compaction without tilting. Steel body undergoes aging treatment; main transmission parts heat-treated for durability.

④ Enclosed Safety & Eco Design

2mm thick steel plate + toughened glass shield with electric interlock. Internal sound-absorbing material + vacuuming port (dust prevention inlet/outlet). Effectively controls dust overflow and noise, protecting workshop cleanliness and personnel.

⑤ Flawless Surface Finish

Processed pads feature smooth end faces, no particles, no burrs/flying edges—critical for transformer insulation reliability.

2. Key Technical Parameters

Parameter

Specification

Application Range

110kV – 1100kV Transformer Windings

Groove Types

Dovetail, Swallow Tail (Pigeon Tail), Straight Groove

Block Length

25 – 300 mm (Accuracy: ±0.2 mm)

Block Width

25 – 60 mm

Max Pad Thickness

350 mm

Saw Head Speed

3000 r/min

Saw Head Movement

2 – 5 m/min

Arc/Slot Knife Speed

9000 – 24000 r/min

Groove Depth Accuracy

±0.2 mm

Rabbet Center Deviation

±0.15 mm

Motor Installed Capacity

~16 kW (excl. dust collector)

Pneumatic System

0.6 MPa / 0.2 m³/min

Machine Weight

3.5 Tons

Control System

CNC HMI, Built-in Library, Real-time Monitor

Enclosure

2mm Steel + Toughened Glass, Sound-absorbing, Vacuum Ready

3. Application & Benefits

  • Application: Axial oil gap pad machining for power transformer coils; insulation spacer blocks with dovetail/straight grooves.

  • Benefits: ±0.2mm precision, 4-spindle high-speed, automatic dovetail/pigeon tail/straight grooving, intuitive CNC HMI, enclosed dust/noise control, burr-free finish, 110kV-1100kV compliance, compact efficient design, robust heat-treated body.

4. Quality Assurance & Manufacturer Service (YIBO Machinery)

  • Quality Control: Strict raw material standards → Precision machining → Assembly recheck → Pre-shipment testing.

  • Certifications: ISO9001:2020, CE/SGS/BV. Key components from Siemens/Schneider/Mitsubishi.

  • Experience: 23+ years, 85%+ China market share (Top 3 electrical equipment).

  • Clients: CASC, CRRC, ABB, EATON, DELIXI, RITZ, TENGEN, Russia Military Enterprise.

  • Delivery: ~90 working days after advance.

  • Payment: L/C, T/T, Western Union.

  • Warranty: 12 months (from Acceptance Report, max 14 months from delivery).

  • Support: Optional overseas installation & training, 24-hour response, video guidance.

→ **Contact our engineering team for custom spacer dimensions, groove configurations (dovetail/straight), or integrated transformer insulation machining lines.


FAQ

Payment & Delivery

Payment term : L/C,T/T,Western Union

Delivery time : 90 working days after advance

Guarantee: The guarantee period shall be 12 months counting from the date of signing the Acceptance Report of this machine at the end-user’s site,but no longer than 14 months from the date of delivery.

What is YIBO?

8A Class Transformer Home with a full solution for the Transformer Industry

1, A real manufacturer with complete in-house facilities and passed ISO9001:2020 quality control system.

2, A professional R&D Center, having collaboration with well-know Shandong University.

3. A top performance company Certificated with International Standards like ISO, CE, SGS and BV etc.

4, A better cost-efficient supplier , all key components are international brands like Simens, Schneider and Mitsubishi etc.

5, A reliable business partner, served for  CASC,CRRC,CASDY,ABB,DELIXI, EATON, RITZ,TENGEN, Russia Military Enterprise etc in past 23 years.

6. A factory has passed the global TOP 500 enterprise clients inspection.

7. A market share in China is over 85% and Top 3 in electrical equipment field.

8. A have mainly manufacture the whole of electrical equipment and technical output service for decades.


Q1: How to grantee the quality ?

The quality is approved by national certificate ,several senior inspection personnel ,the brand material supplier ensure the safety and reliability of everything from storage to finished the goods .

Q2:Do you provide overseas installation and training ?

A: It’s optional .Our company will provide the guidance and videos for installation and commissioning.

If you need ,we can send engineers for for overseas installation and training.

Q3:How long is the warranty ?

A:The warranty period is 12 months .During Any problems ,our company will respond within 24 hours .






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18# North Road Anyuan, Economic& Tech.Development Zone, Pingxiang City, Jiangxi Proviince China.

yibomachinery@163.com

info@yibowindingmachine.com

0086  15979221627

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