Broaching Machine for Internal Bevel Gear Teeth Machining

• Customization: Available
• After-sales Service: Provide
• Warranty: 1 Year
• Model NO.: NJ8810
• Application: Metal
• Process Usage: Metal-Cutting CNC Machine Tools
• Movement Method: Contour Control
• Control Method: Closed-Loop Control
• Numerical Control: CNC/MNC
• Processing Precision: 0.03~0.04(mm)
• Performance Classification: High-End CNC Machine Tools
• Certification: CE, ISO 9001
• Condition: New
• Transport Package: Standard Export Package
• Trademark: UBRIGHT
• Origin: Cn
• HS Code: 8461300000
• Production Capacity: 100 Set

Product Description

Machine Introduction

 

The NJ8810 Internal Helical Broaching Machine is a niche customized equipment, precisely adapted to two core scenarios: high-end precision transmission industry (aviation actuators, small differential gears) and special equipment manufacturing industry (deep-sea sealing components). Targeting small-module (0.3-1.0), high-precision (National Standard Grade 4), and small-batch customization requirements, it completely resolves the pain points of insufficient precision, low efficiency, and high cost associated with traditional milling/EDM (Electrical Discharge Machining).

The NJ8810 Internal Helical Broaching Machine is a high-precision processing equipment specially designed for niche customization needs. It is mainly applicable to small-batch internal helical tooth processing scenarios with small modules (0.3-1.0) and National Standard Grade 4 precision. Prior to equipment selection, it is necessary to confirm the customer's tooth profile structure (conical vs. cylindrical surface) to avoid function mismatch. By integrating custom special broaches and conical positioning fixtures to achieve one-time broaching forming, it solves the problems of insufficient precision, low efficiency, and high cost of traditional milling/EDM, bringing customers the core value of precision compliance, doubled efficiency, and cost reduction.

 

Workpiece Basics

Applications: Internal helical teeth are widely used in precision transmission mechanisms (e.g., differentials, actuators) and special equipment sealing systems. Their core functions are to achieve efficient torque transmission and compact spatial layout.

 

Key Difficulties: The tooth profile is located on the inner wall of conical/cylindrical surfaces, leading to high positioning difficulty during processing; small-module tooth profiles impose extremely high requirements on tool rigidity and profile accuracy; tooth root strength and surface wear resistance must be guaranteed under extreme working conditions.

 

Common Materials: Aviation aluminum alloy, corrosion-resistant alloy, special steel, etc.

 

 

 

 

Application Scenarios

 

Scenario 1: Small-Batch Customization for High-End Precision Transmission

 

Pain Points: Aviation actuator internal helical teeth require National Standard Grade 4 precision. Milling processes result in tooth profile deformation (error ≥ 0.02 mm) and Ra ≥ 1.6 μm, failing to meet requirements; EDM has a single-piece cycle exceeding 4 hours, causing delivery delays.

 

Process Package:

 

• Equipment: NJ8810 Broaching Machine + Custom Conical Positioning Fixture
• Process: Blank Preprocessing → Conical Positioning → One-Time Broaching Forming → Cooling and Cleaning
• Parameter Range: Broaching speed 1-3 m/min, cooling pressure 0.5 MPa
• Quality Control: On-line measurement of tooth profile error (≤ 0.01 mm), surface roughness Ra ≤ 0.6 μm

 

Expected Outcomes: Single-piece cycle shortened to 30 minutes, 100% precision compliance rate, 35% cost reduction (eliminating custom electrode/end mill costs).

 

Scenario 2: Extreme Working Condition Requirements for Special Equipment

 

Pain Points: transmission internal helical teeth are made of corrosion-resistant alloys. EDM results in poor tooth root fillet transition (prone to fracture); milling tools have rapid wear (service life ≤ 5 pieces), leading to high maintenance costs.

 

Process Package:

 

• Equipment: NJ8810 Broaching Machine + Wear-Resistant Coated Special Broach
• Process: Special Material Blank → Special Fixture Clamping → Low-Speed Broaching (1 m/min) → Residual Stress Relief
• Parameter Range: Pulling force 100 KN, cooling temperature 25±2ºC
• Quality Control: Tooth root fillet radius ≥ 0.1 mm, surface hardness increased by 15% (work hardening)

 

Expected Outcomes: 20% improvement in tooth root strength, tool service life ≥ 20 pieces, 99.5% reliability under extreme working conditions.

 

Scenario 3: Rapid Prototype Verification in R&D Phase

 

Pain Points: New product internal helical tooth prototypes require frequent tooth profile iterations. The custom end mill/electrode cycle of traditional processes exceeds 2 weeks, delaying R&D progress.

 

Process Package:

 

• Equipment: NJ8810 Broaching Machine + Rapid Custom Broach (7-day delivery)
• Process: Prototype Design → Broach Customization → Broaching Processing → Performance Testing
• Parameter Range: Support for tooth profile modification (both conical and cylindrical surfaces available)
• Quality Control: Prototype precision error ≤ 0.015 mm

 

Expected Outcomes: Prototype iteration cycle shortened to 10 days, 60% improvement in R&D efficiency.

 

  

Revenue Data

Indicator	NJ8810 Broaching Machine	Traditional Milling	Electrical Discharge Machining (EDM)
Single-piece Cycle	30-60 min	2-3 h	4-6 h
Tooth Profile Accuracy	National Standard Grade 4	National Standard Grade 6-7	National Standard Grade 5
Surface Roughness Ra	≤ 0.6 μm	≥ 1.6 μm	≥ 1.2 μm
Tool/Electrode Life	≥ 20 pieces	≤ 5 pieces	≤ 10 pieces
Comprehensive Cost	100%	150%	180%

Parameters and Configuration

 

 

Parameter Name	Value	Unit
Rated Tension	100	KN
Rated Torque	90	Nm
Rated Stroke	1250	mm
Maximum Broach Length	1400	mm
Working Speed	1-8	m/min
Return Speed	1-12	m/min
Feeding Speed	1-5	m/min
Lifting Speed	1-10	m/min
Floor Area (Length × Width × Height)	3000×3100×5300	mm
Machine Net Weight	13500	kg

Configuration Item	Core Function
Customized Special Broach	Designed according to the customer's tooth profile, with cutting edge contours matching the conical/cylindrical surface, ensuring machining accuracy and tooth profile consistency.
Conical Surface Positioning Fixture	Achieves precise positioning of the blank, eliminates offset errors during machining, and improves tooth alignment accuracy.
High-precision Linear Guide	Ensures the stability of the broaching process and reduces the impact of vibration on surface roughness.
CNC Control System	Supports precise adjustment of broaching speed and stroke, adapting to different materials and tooth profile requirements.
Cooling & Filtration System	Reduces broach wear, removes chips, and ensures the quality of the machined surface.
Online Measurement Module	Real-time detection of tooth profile errors and Ra values, enabling closed-loop quality control.