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Experience
About us
Sichuan Rongge Precision Tools Co., Ltd.
Established in November 2025, Sichuan Rongge CNC Cutting Tools Manufacturing Factory is backed by over 20 years of OEM manufacturing experience in the CNC cutting tool industry. Our team has served leading brands in Japan, South Korea, Europe, and the United States.
With a 23,000 m² production facility, more than 300 employees, and two fully automated production lines, we deliver reliable, high-quality cutting tools for global markets — comparable in quality to leading international brands at direct-from-factory prices.
Production Process
From Raw Material to Finished Tool
Twenty-one precision steps — from material preparation to final marking — ensure every Rongge cutting tool meets international-brand quality.
01
Material Preparation
Raw materials are issued according to production drawings and work orders, then cut to the specified lengths for subsequent processing.
02
Rough Turning
The outside diameter, end faces, and steps of the blank are rough-turned to establish the basic tool profile while leaving finishing allowance.
03
Deep-Hole / Gun Drilling
Internal coolant holes or guided deep holes are machined to ensure correct hole diameter, position, and uninterrupted coolant flow.
04
Shank Thread Turning
External threads are machined on the shank for the subsequent assembly of inserts, screws, or clamping components.
05
Finish Turning
The shank and reference outside diameter are finish-machined to ensure dimensional accuracy, concentricity, and reliable clamping reference surfaces.
06
CNC Flat Milling
Flats or locating surfaces are milled on the shank to create clamping, drive, or assembly-locating features.
07
CNC Insert Pocket & Helical Flute Milling
Insert pockets, helical chip flutes, and related locating features are machined to form the drill body’s primary geometry.
08
Y-Coolant Hole Drilling
Y-shaped internal coolant passages are machined to direct coolant to the cutting edges and machining zone.
09
Deburring
Burrs, sharp edges, and residual chips are removed to prevent interference with assembly and use.
10
Heat Treatment
Quenching, tempering, and other heat-treatment processes improve the tool body’s hardness, strength, and wear resistance.
11
Post-Heat-Treatment Inspection
Hardness, deformation, and appearance are inspected after heat treatment to confirm suitability for subsequent processing.
12
Sandblasting — Operation 1
The tool body surface is blast-cleaned to remove scale and improve surface uniformity.
13
Finish Grinding
The head outside diameter, end faces, and mating surfaces are finish-ground to meet final dimensional and surface-roughness requirements.
14
Cutting Head Machining
The working-end profile, cutting-edge geometry, and related angles are machined to form the basic cutting-head shape.
15
Cutting Head Deburring
Burrs and sharp edges are removed from the machined head to maintain cutting-edge integrity and appearance quality.
16
Touch-Up Sandblasting
Localized blast treatment is applied to ensure consistent surface condition and appearance.
17
Surface Treatment
Anti-rust, black oxide, plating, or coating treatments are applied to improve corrosion resistance, wear resistance, and appearance.
18
Final Quality Inspection
Final inspection is performed against drawings and inspection specifications for dimensions, geometric tolerances, appearance, assembly, and function.
19
Diameter Inspection
Key diameters and related dimensions are inspected by sampling or 100% inspection to confirm conformity with drawing requirements.
20
Product Marking
Model, specification, batch, brand, and other traceability information is marked in designated locations on the product.
Intellectual Property
Patents & Certifications
Holder of over 40 utility model patents — a testament to Rongge’s commitment to independent R&D and machining innovation.
WORKING WITH US
Sichuan Rongge CNC Cutting Tools Manufacturing Factory is backed by over 20 years
of OEM manufacturing experience in the CNC cutting tool industry.