Motor Fork Stepped Shaft Power Shift Execution For Gear Transmission

ⅠFunctional principle - the "power - shift execution carrier" of the transmission
The automobile shift fork shaft is a core actuating component of the transmission, undertaking the critical functions of “integrating shift commands and actuating gear - shifting operations”:
1.Physical Transmission Logic: It cooperates with the shift fork and synchronizer. When the driver operates the shift mechanism (e.g., gear engagement, drive - mode switching), the shift fork shaft receives the shifting force. Through the shift fork, it pushes the sliding gear or synchronizer sleeve to move, altering the gear - meshing relationship between the input and output shafts, thereby achieving speed - ratio adjustment or drive - mode transition.
2.Control Synergy Value: In Great Wall Motors’ hybrid and 4WD systems, the shift fork shaft must precisely coordinate with the Electronic Control Unit, clutch, and motor. Via position signals fed back by sensors, it ensures that “shift timing and power - transfer synchronization” align with the vehicle’s overall power demands.

ⅡThe value in the Great Wall vehicle system - multi-scenario performance guarantee
It is tailored to Great Wall Motors’ off - road, new - energy, and other technical frameworks, underpinning differentiated performance capabilities:
1.Off - road Operational Adaptability: In models like the Tank series and Hi4 - Z architecture, the shift fork shaft endures high - torque impacts, precisely actuating transfer - case gears to switch between high - speed and low - speed 4WD modes. Through a high - strength design, it ensures reliable execution of “torque amplification and differential locking” functions during off - road maneuvers, resolving passability challenges in complex terrains.
2.New - Energy Hybrid Synergy: In hybrid systems such as Lemon Hybrid and Hi4, the shift fork shaft participates in switching among “engine direct drive, electric drive, and hybrid mode”. Its response speed and positioning precision directly influence the smoothness of power - transfer synchronization and energy - consumption optimization.
3.Reliability and Durability: Great Wall Motors’ vehicles operate across all - climate and all - road - condition scenarios. The shift fork shaft undergoes rigorous “salt - spray, high - and low - temperature, vibration” testing. This ensures long - term stable operation of the shift mechanism in extreme environments (e.g., - 40℃ extreme cold, desert - level high temperatures) and prevents shift malfunctions caused by shaft jamming or wear.

ⅢDesign and manufacturing characteristics - industrial-grade precision requirements
From a professional manufacturing perspective, it embodies the core standards for automotive transmission components:
1.Structural Design Logic: The shaft body integrates “shift - fork mounting locations and self - locking/interlocking mechanism slots”. Through topological optimization, it balances “strength, lightweight design, and installation compatibility”. For instance, a stepped - shaft structure is employed —— the shaft diameter is thickened at critical load - bearing sections, while material is reduced at non - load - bearing sections. Slot - position accuracy is controlled within ±0.02mm to ensure compatibility with self - locking steel balls and shift forks.
2.Materials and Processes: Alloy structural steel is selected, undergoing the process: “forged blank → machining → heat treatment (carburizing and quenching) → precision grinding”. This achieves a shaft - body surface hardness of HRC58–62, while maintaining core toughness. CNC machining ensures journal cylindricity and slot - position parallelism, meeting the assembly - precision requirements of Great Wall Motors' transmissions.

DINGSCO Precision Gear Solutions — Pioneering Force in Equipment Transmission

Core Advantages: Cutting-Edge Equipment × Digitalized Processes × Full-Cycle Services

As a leading precision gear manufacturer, DINGSCO specializes in customized production of micro high-precision spiral bevel gears and hypoid gears through our multiple CNC seven-axis five-linkage spiral bevel gear grinding/milling machines and Gleason spiral bevel cutter technology. With DIN 6 precision class (tooth profile error ≤ ±5μm), 95%+ transmission efficiency, and ultra-high reduction ratios, we deliver reliable transmission solutions for robotics, motor drives, new energy vehicles, and more.

Why Choose DINGSCO?
✅ High Precision: Achieving DIN 6 grade accuracy, leading the industry in controlling tooth profile errors.

✅ High Efficiency: With a single - stage reduction ratio of up to 300:1, and a transmission efficiency of over 95%.

✅ Durability: 40% lower lifecycle cost, <0.5% failure rate.
✅ Fast response: The digital process can shorten the delivery cycle to 20 working days.

Contact Us Soon for gear optimization proposals and 3D meshing simulations!

Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Changsha Senjie Gear Co., Ltd (abbreviated as "CSG") in 2016. CSG is a production R&D base specializing in professional design, reserch, manufacture and sales of high-quality small module spiral bevel gears and high reduction hypoid gears and cylindrical gears. In 2023, Hunan Dinghan New Material Technology Co., Ltd. was established as a specialized international export business department. CSG has strong scientific research and development capabilities and is also equipped a full set of advanced equipment including seven-axis five-linkage CNC spiral bevel gear grinding machines and gear milling machines. By making the best use of the scientific and technological achievements and equipment of the Gear Research Institute of Central South University, machanical processing, heat treatment and testing. We have developed high-quality products featuring high reduction, high speed, heavy load, low noise and less teeth for users.

With the quality policy of "scientific and technological innovation, quality first, being first-class firm and customer‘s satisfaction", we have won the trust of well-known domestic and abroad enterprises with stable and excellent quality. It is committed to be a pioneer of the industry of China's small-module spiral bevel gears, and is dedicated to providing service for any related industry requiring industrial robots, CNC turning and milling compound power tool turrets, industrial sewing machines, reducers, bicycles, power tools and aeromodelling. We sincerely look forward to your cooperation!