Milling and Drilling Machine

Short Introduction

An industrial milling and drilling machine integrates vertical milling, high-torque drilling, and precision boring onto a single rigid platform. Built with Meehanite cast iron beds and precision-ground box ways, it dampens chatter during heavy stock removal while maintaining tight dimensional tolerances. Designed for medium-to-heavy metal fabrication shops, it handles structural steel, aluminum alloys, and cast iron components with repeatable positioning accuracy.

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Machine Configurations

Vertical Knee-Type

Manual or 3-axis CNC configuration featuring a movable knee and saddle; suited for job shops, tool rooms, and single-piece prototyping of brackets, plates, and small housings.

Bed-Type Machining Center

Fixed table configuration with a moving gantry or column; built for heavy workpieces up to 2000 kg, providing stable load distribution and high-volume structural component processing.

Box-Way vs. Linear Guide Systems

Box-way configurations deliver maximum vibration damping during interrupted cuts; linear guide configurations prioritize rapid traverse speeds (up to 30 m/min) for high-speed aluminum milling.

Key Specifications

Specification Category	Standard Model Parameter	Heavy-Duty Model Parameter
Table Dimensions	1200 x 300 mm	1600 x 500 mm
Travel (X / Y / Z Axes)	800 x 400 x 450 mm	1300 x 600 x 600 mm
Spindle Taper	ISO 40	ISO 50
Spindle Speed Range	50 to 6000 RPM (Belt driven)	35 to 4000 RPM (Gear driven)
Spindle Motor Power	7.5 kW	15 kW
Max Table Load	500 kg	1500 kg
Positioning Accuracy	Plus or minus 0.008 mm / 300 mm	Plus or minus 0.005 mm / 300 mm
Repeatability	Plus or minus 0.003 mm	Plus or minus 0.002 mm

Key Features

01.

Meehanite Cast Iron Structure

Annealed at 600 degrees C to relieve internal stress, preventing structural warping after continuous thermal loading.

02.

Hardened and Ground Ways

Guide ways induction-hardened to HRC 50 to 55 and coated with Turcite-B to minimize stick-slip friction and extend operational lifespan.

03.

Preloaded Ball Screws

C3-grade ground ball screws on all axes coupled with direct-drive servomotors, eliminating backlash during directional reversals.

04.

Rigid Tapping Capability

Encoder-synchronized spindle feed matches lead screw pitch for thread cutting without floating taps.

How to Choose the Right Machine

Step 1: Evaluate Material Hardness and Stock Removal Rate

Select gear-driven ISO 50 spindles with high torque output (greater than 120 Nm) for roughing cast iron and structural steel. Choose high-RPM belt-driven spindles (greater than 8000 RPM) for thin-wall aluminum aerospace components.

Step 2: Match Axis Travel to Envelope Requirements

Ensure the Y-axis travel accommodates the workpiece width plus fixture clearance, leaving a minimum 20 percent safety margin on table travel limits.

Step 3: Define Rigidity vs. Speed Requirements

Opt for box ways when surface finish consistency under heavy radial loads is the priority. Choose linear guideways if cycle time reduction via rapid traverse is the primary metric.

Typical Applications

Automotive Sub-Assemblies

Machining engine blocks, transmission housings, and suspension brackets requiring multi-axis hole drilling and face milling.

Industrial Valve Bodies

Boring internal fluid channels and facing flange surfaces on stainless steel and bronze castings.

Mold and Die Manufacturing

Roughing P20 and H13 tool steel blocks for injection mold cavities prior to EDM processing.

Manufacturing & Quality Control

Foundry and Casting: Sourced from certified foundries using resin-sand molding techniques, followed by ultrasonic testing to detect subsurface casting voids.

Thermal Aging Process: Structural castings undergo natural outdoor weathering for 90 days, followed by thermal stress-relief annealing furnaces.

Machining Verification: Major base frames are milled on floor-type boring mills in a temperature-controlled facility (20 degrees C plus or minus 1 degree C).

Laser Interferometer Testing: Axis positioning, pitch, yaw, and straightness are calibrated using Renishaw laser interferometers to verify geometric alignment.

Ballbar Circularity Test: Dynamic interpolation tests verify axis synchronization and contouring accuracy prior to crating.

FAQ

Q: What is the maximum permissible weight load on the standard table, and how does off-center loading affect machining tolerance?

A: The standard table supports up to 500 kg distributed evenly. Concentrated off-center loads exceeding 60 percent of the rated limit within a 200 mm radius can induce micro-deflection in the table plate, reducing vertical parallelism by 0.01 mm over a 300 mm span. For eccentric heavy fixtures, sub-plates or box-type support jacks must be used.

Q: Can this machine perform heavy-duty boring operations without losing spindle concentricity?

A: Yes, models equipped with ISO 50 gear-driven spindles utilize a four-bearing front cartridge design that absorbs both radial and axial cutting forces. When boring hardened steels (HRC 35 to 45) with carbide boring bars, runout is maintained under 0.005 mm at 1500 RPM.

Q: What maintenance schedule is required to preserve axis positioning accuracy over years of continuous multi-shift production?

A: Automatic centralized lubrication pumps inject ISO VG 68 way lube to ball screws and guideways every 15 minutes of active cutting time. Operators must inspect oil reservoirs weekly. Way wipers must be cleared of swarf daily to prevent premature scoring of the Turcite-B coating, and axis backlash compensation parameters should be checked bi-annually via ballbar testing.

Q: What is the electrical power requirement, and what protections are installed against workshop voltage fluctuations?

A: Standard configuration requires 380V plus or minus 10 percent, 3-phase, 50/60 Hz with a total connected load rating of 22 kVA. The electrical cabinet incorporates isolation transformers and phase-sequence protection relays to prevent damage to servodrives and spindle amplifiers from sudden grid surges or voltage drops.

Q: How are structural thermal expansions managed during long machining cycles running over 8 hours?

A: The machine incorporates a spindle oil chiller circuit that circulates cooling fluid through the spindle head jacket to stabilize bearing temperatures within plus or minus 2 degrees C of ambient levels. Additionally, linear scale feedback systems feature thermal compensation algorithms in the CNC controller to adjust axis coordinate offsets dynamically.

Q: What documentation and factory acceptance testing (FAT) reports are supplied prior to ocean freight shipping?

A: Every machine ships with a complete technical dossier including electrical schematics, PLC ladder diagrams, parts manuals, the manufacturer's laser interferometer calibration certificate, and a recorded 3-axis ballbar circularity test report. Video-link FAT inspections are available upon request prior to final crating.

Shandong TaoFong CNC Machine Tool Co., Ltd. is one of the most professional milling and drilling machine manufacturers and suppliers in China, featured by quality products and good price. Please rest assured to buy durable milling and drilling machine for sale here from our factory. Customized orders are welcome.