China Turning Milling Machine Frame Manufacturers Suppliers Factory - Customized Service

Product Overview

A Turning Milling Machine Frame is the main structural body and load-bearing backbone of a CNC turn-mill machine. It provides the essential mounting, alignment, and support structure for major assemblies such as the spindle system, linear guideways, workholding systems, tool turrets, and motion components.
For a modern turn-mill machine, the frame must accommodate complex, multi-axis machining functions within a single structural platform. Its geometry directly dictates relative axis positioning, guideway alignment accuracy, mounting precision, and overall dynamic/static structural stability.
Typical Production Scope
Casting and preliminary cleaning
Specified stress-relief or thermal aging treatment
Rough machining and stock removal
Datum establishment and mounting-surface machining
Drilling, tapping, and deep-hole machining
Precision finishing of critical functional surfaces
Comprehensive dimensional and geometric inspection
Final cleaning, rust prevention, and export-grade protective crating

Turn Mill Machine Frame
The machine structure is made of high-quality HT300 cast iron, manufactured using resin sand molding, followed by tempering and vibration stress relief to eliminate internal stresses and ensure

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Mill Turn Machine Frame
This 5‑axis mill‑turn machine frame integrates turning and 5‑axis milling capabilities. Parts can complete outer‑diameter, face and bore turning, as well as milling, slotting, angled‑hole and

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Machine Structure & Configuration

Rather than serving as a simple base, a turning milling machine frame integrates multiple high-precision functional zones.
Main Structural Areas
Guideway Mounting Areas: Machined mounting pads and reference rails provide exact geometric alignment for linear guideways or box ways. Their positions are controlled tightly against master datums.

Spindle & Headstock Support Area: The frame integrates a rigid, heavy-duty housing structure for the main spindle assembly, ensuring absolute coaxiality and load distribution under cutting forces.

Workholding & Worktable Area

Configured to support chucks, tailstocks, rotary tables, or sub-spindles depending on the machine’s specific turning and milling layout.

Internal Ribs & Reinforcement

Optimized internal rib networks increase torsional stiffness while keeping the overall casting weight balanced. Designed according to real-world load paths and casting feasibility.

Mounting & Service Interfaces

Includes threaded holes, dowel pin locations, lifting lugs, coolant drainage channels, and cabling service windows.

Key Features

01/

High Structural Rigidity: Engineered wall thickness, rib distributions, and mass allocation minimize vibration and deflection under heavy cutting loads.

02/

Controlled Machining Datums: Critical mounting faces are machined from unified reference datums to maintain long-term alignment across all axes.

03/

Integrated Cast Construction: Cast-in ribs and mounting bosses eliminate the assembly tolerances and weaknesses associated with multi-piece welded structures.

04/

Precision Interface Machining: High-accuracy milling, boring, and tapping for guideways, bearings, and encoder brackets.

05/

Strict Drawing Compliance: Full adherence to customer tolerances, GD&T, and quality documentation.

06/

Batch Consistency: Repeatable OEM production processes ensure identical dimensional performance across recurring batch orders.

Materials & Construction

Material selection is tailored to the machine's dynamic requirements, thermal stability targets, and weight limitations.

Cast Iron Construction
Cast iron (such as high-grade Meehanite, Grey Iron, or Ductile Iron) is the industry standard for machine tool bases due to its exceptional vibration damping capacity, compressive strength, and dimensional stability.
Rule of Thumb: We strictly cast according to the specific material grade requested in your engineering specification, rather than substituting generic alloys.

Machined Functional Interfaces
Post-casting thermal conditioning (such as thermal stress relief or natural aging) is followed by precision machining on large-scale CNC boring and milling centers. Critical interfaces include:
Linear guideway seating surfaces
Spindle and bearing housing bores
Mounting bosses and assembly references
Precision dowel and threaded holes

Technical Specifications

Specification Item	Typical Purchasing Standard / Requirement
Product Type	Turning Milling Machine Frame (OEM Structural Component)
Production Model	Custom / Made-to-Order according to Drawings
Material Grades	Specified per Customer Engineering Drawing (Cast Iron / Steel)
Standard Manufacturing Route	Casting to Thermal Aging to Rough Machining to Precision CNC Machining to Inspection
Dimensions & Weight	Custom-engineered per approved 3D CAD model
Machining Datums	Customer-defined primary and secondary datum systems
Geometric Tolerances	Per drawing requirements (Flatness, Parallelism, Perpendicularity within microns)
Quality Assurance	Comprehensive dimensional inspection reports and material test certificates (MTC)

Applications

CNC Turn-Mill Centers

Provides the rigid foundation required for machines combining high-speed turning and multi-axis milling simultaneously.

Multi-Axis Turning & Milling Equipment

Structural support for complex machines featuring B-axis milling heads, Y-axis tool turrets, and sub-spindles.

Precision Metalworking Machinery

Used wherever thermal stability and strict geometric relationships between moving assemblies are mandatory.

OEM Machine Tool Builders

Allows machine tool manufacturers to outsource heavy structural fabrication while keeping core assembly, spindle integration, and CNC control in-house.

Manufacturing & Quality Control

We maintain rigorous process control from liquid metal to final inspection:

Casting Integrity Check

Visual examination, non-destructive testing (NDT) where specified, and dimensional pre-checks.

Stress-Relief & Aging

Controlled thermal cycles to eliminate residual internal casting stresses before precision machining.

Rough & Finish Machining

Multi-stage machining on advanced heavy-duty CNC machinery to guarantee surface finish and dimensional precision.

Advanced Metrology Inspection

Using large-scale measuring tools and high-precision CMM systems to verify flatness, parallelism, perpendicularity, bore diameters, and datum relationships.

Documentation

Full traceability with inspection sheets, material certs, and customized quality control reports.

OEM & Customization

As a dedicated OEM manufacturer, we work directly from your engineering packages.
Our Engineering Review Process
Before cutting metal, our technical team evaluates:
Casting wall uniformity and rib layout
Machining stock allowances and tool clearances
Accessibility for deep-hole drilling and tapping
Optimal machining and clamping sequences
Customized export packaging and logistics protection
Whether you are launching a prototype or setting up repeat batch production, we maintain strict revision control to ensure absolute consistency across every delivery.

FAQ

Q: What is a turning milling machine frame?

A: It is the main structural casting and machined foundation of a CNC turn-mill center. It supports and accurately aligns guideways, spindles, workholding, and tool turrets under dynamic cutting loads.

Q: What material is commonly used?

A: High-grade cast iron is standard due to its unmatched vibration damping and dimensional stability. We strictly follow your designated material specifications.

Q: Can you manufacture the frame entirely from our custom drawings?

A: Yes. We specialize in custom OEM production based on your 2D drawings, 3D CAD files, material standards, and inspection requirements.

Q: What details are needed to get a fast quotation?

A: Please send your 2D engineering drawings, 3D CAD files, material grade, expected quantities, and any special inspection or tolerance requirements.

Q: How do you control precision and geometric tolerances?

A: Through a tightly controlled manufacturing workflow: casting to stress relief to rough machining to precision CNC finishing to rigorous metrology inspection against master datums.

Q: Is the frame delivered fully machined and ready for assembly?

A: Yes, depending on your project scope, we deliver fully finished structural frames complete with all machined mounting surfaces, tapped holes, and inspection certificates.

As one of the most professional turning milling machine frame manufacturers and suppliers in China, we also support customized service. Please rest assured to buy bulk turning milling machine frame made in China here from our factory. Contact us for more details.