High-Precision Horizontal Broaching Machine for Keyway Machining of Automotive Flange Wheel Hubs

• Customization: Available
• After-sales Service: Provide
• Warranty: 1 Year
• Model NO.: LG6120
• 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 LG6120 Keyway Horizontal Broaching Machine focuses on three core sectors: automotive components, aerospace, and engineering machinery. It precisely addresses the pain points in flange/hub keyway machining, such as "poor precision, low efficiency, and difficulty in processing high-hardness materials", and is suitable for three core scenarios: batch production cost reduction, high-precision machining, and high-hardness material machining.

 

The LG6120 Keyway Horizontal Broaching Machine is a high-performance single-station broaching equipment specially designed for high-precision internal hole keyway machining in the fields of automotive components, aerospace, and engineering machinery. Its core advantage lies in adapting to various machining needs such as smooth holes, internal splines, and keyways through quick replacement of dedicated tool chucks and fixtures, significantly improving production efficiency and reducing operational difficulty. The equipment adopts a stable 200kN broaching force, a stepless speed regulation hydraulic system, and a wear-resistant guide rail design, ensuring machining precision and long-term stability. It is an ideal choice for batch production and precision machining.

 

Workpiece Basics

 

A keyway is a core structure that enables torque transmission through the fit between a flange/hub and a shaft, directly affecting the transmission stability of equipment. Common machining challenges are as follows:

 

1. High requirement for dimensional consistency;
2. Symmetry/verticality error must be ≤ 0.02mm;
3. Commonly used materials are difficult-to-cut ones such as stainless steel and high-strength alloys;
4. Both efficiency and quality must be balanced during batch production.

 

 

  

Application Scenarios

 

1. Mass Production Cost Reduction Scenario

 

Requirements: For batch orders (≥ 1,000 pieces per batch) such as automotive transmission flanges and agricultural machinery hubs, it is necessary to reduce unit processing costs and shorten delivery cycles.

 

Process Package:

 

• Equipment Configuration: LG6120 Horizontal Broaching Machine + Quick Tool Change Chuck + Automated Loading and Unloading Fixture;
• Process Route: Blank Positioning → Broach Installation → One-Click Broaching → Automatic Unloading;
• Parameter Range: Broach length: 600-1600mm; Working stroke speed: 3.5m/min; Fast return speed: 8m/min;
• Quality Control: On-line dimensional inspection (precision of ± 0.01mm);
• Expected Results: Machining efficiency increased by 3 times (from 5 pieces/hour to 15 pieces/hour), unit cost reduced by 40%, and delivery cycle shortened by 50%.

 

2. High-Precision Machining Scenario

 

Requirements: For precision components such as aerospace reference flanges and machine tool spindle hubs, keyway symmetry error ≤ 0.01mm and surface roughness Ra ≤ 1.6μm.

 

Process Package:

 

• Equipment Configuration: LG6120 + Special Precision Tool Chuck + Digital Twin On-line Monitoring System;
• Process Route: Blank Pre-inspection → Customized Broaching Parameters (working speed: 2.5m/min) → Machining in Constant Temperature Environment → Off-line 3D Inspection;
• Parameter Range: Keyway width tolerance: ± 0.005mm; Symmetry error: ≤ 0.01mm;
• Expected Results: Fully meets the stringent standards of the aerospace industry, scrap rate reduced from 3% to 0.5%, and no subsequent grinding process required.

 

3. High-Hardness Material Machining Scenario

 

Requirements: For petrochemical stainless steel flanges and metallurgical thick-walled hubs (hardness HRC45+), it is necessary to avoid tool chipping and part deformation.

 

Process Package:

 

• Equipment Configuration: LG6120 + Special Broach for High-Hardness Materials + Stable Hydraulic System (20MPa pressure);
• Process Route: Rough Broaching (speed: 4.5m/min) → Finish Broaching (speed: 2.5m/min) → Stress Relief Treatment;
• Parameter Range: Broaching force: 200kN; Suitable for materials with hardness HRC30~50;
• Expected Results: Tool life extended by 2 times, part deformation ≤ 0.02mm, and stable machining quality.

 

 

Revenue Data

       

Indicator	LG6120 Horizontal Broaching Machine	Traditional Milling Process
Processing Efficiency	15 pieces/hour	5 pieces/hour
Keyway Symmetry	≤0.01 mm	≥0.05 mm
Scrap Rate	0.5%	3%
Unit Processing Cost	10 yuan/piece	16 yuan/piece
Auxiliary Time	5 minutes/batch	20 minutes/batch

Customer Cases

 

Case: After a certain automotive transmission factory introduced the LG6120, the productivity of its keyway machining line increased from 200 pieces/day to 600 pieces/day, the scrap rate decreased from 3.2% to 0.4%, and the annual cost savings exceeded 1.2 million CNY.

 

FAQ:

 

Q: Can the LG6120 machine blind-hole keyways?

 

A: It can be adapted with customized broaches to machine blind-hole keyways (depth ≤ 50mm).

 

Q: How long does it take to replace the tool chuck?

 

A: With a dedicated quick-change chuck design, the replacement time is ≤ 10 minutes.

 

Parameters and Configuration

 

No.	Parameter Name	Value Range / Specification	Remarks
1	Nominal Tension	200kN	-
2	Maximum Stroke	1600mm	-
3	Applicable Broach Length	600-1600mm	Must match the corresponding broach
4	Working Stroke Speed	2.5-4.5m/min	Stepless speed regulation
5	Return Stroke Speed	5-8m/min	Quick return via differential valve
6	Worktable Dimensions	400×300mm	-
7	Worktable Aperture	Φ125mm	-
8	Maximum Working Pressure	20MPa	Hydraulic system
9	Motor Power	7.5kW	-
10	Host Machine Dimensions	5300×800×1100mm	-
11	Machine Weight	≈2000kg	-

 

Category	Component Name	Brand / Manufacturer	Remarks
Main Machine	Bed / Base	Manufacturer's own	Annealing and aging treatment
Main Machine	Main Slide	Manufacturer's own	Wear-resistant rail belt design
Main Machine	Oil Cylinder Assembly	Manufacturer's own	Large diameter stable drive
Main Machine	Main Tool Chuck	Manufacturer's own	Quick-change design
Hydraulic System	Oil Pump	Guangye	High-pressure vane pump
Hydraulic System	Main Control Valve	Huade	Precision control
Electrical System	Motor	General	High efficiency and energy saving
Electrical System	Electrical Components	Chint	Safe and reliable
Lubrication System	Manual Lubrication Cup	Purchased in market	Transparent needle valve monitoring
Chip Removal System	Manual Chip Removal Unit	-	Easy maintenance