Company Overview

Kao Ming Machinery Industrial Co., Ltd., located in Taichung City, Taiwan, specializes in high-precision, high-speed CNC machining centers. The company focuses on quality control, advanced manufacturing capabilities, and innovative design inspired by the precision and stealth of an owl.

Product Series: KMC RF Series

Main Features

• All three axes utilize boxway supports for enhanced rigidity and stability.
• Large travel ranges, including a notable 1100mm Z-axis stroke.
• Preloaded, pretensioned large diameter ballscrews with oil cooling (X-axis) and air cooling (bearings) to improve positioning accuracy.
• Hardened and ground double guideway beds for columns under 2100mm; "D" model supports up to 2300mm with four box ways combining sliding and rolling designs for heavy loads.
• Linear guideways with reinforced roller-type recirculating bearings for X-axis travels over 8000mm.
• Bridge machine design with Y-axis step for strong rigidity.
• External feedback pulse coders on all axes for high positioning accuracy.
• Integrated mounting brackets for Y and Z ballscrews to maximize rigidity.
• Mechanical safety couplings to minimize damage during collisions or overloads.
• Finite Element Analysis (FEA) applied to optimize structure for rigidity and vibration control.
• Ram-type cast spindle head (400x400mm cross-section) for high rigidity under heavy cutting.
• Symmetrical spindle and motor alignment reduces thermal growth.
• Optional coolant-through-spindle system for chip removal and heat control.
• Horizontal spindle with hardened, ground spiral bevel gears reduces noise and shock.
• Standard 2-station Automatic Attachment Changer (AAC) with options for various heads (V-head, H-head, 30-degree angle, extension).
• Hydraulic motors drive ATC and dual-arm systems for fast, stable tool changes.
• Optional FANUC data server, AICC II, and high-speed processors for die/mold machining with mass data pre-processing.

High Rigidity Structure Details

• Integral ballscrew mounting brackets with double anchor system reduce vibration.
• Mechanical couplings provide axis safety protection.
• External axis position feedback pulse coders directly coupled to ballscrews enhance accuracy.
• Y-axis step design offsets lower slideway by 70mm to improve spindle head rigidity.
• Inner cooled ballscrews with oil circulation and air-cooled bearings minimize thermal growth and maintain accuracy.
• Four-guideway high rigidity structure combines hardened, ground box ways with Turcite-B and roller-type recirculating bearings for heavy load machining.
• Sliding face scraping and roller-type bearings ensure precise geometry and dynamic rigidity.

Spindle Head and Performance

• Precision scraping ensures geometric accuracy (perpendicularity, parallelism, flatness).
• Square-shaped spindle head with symmetrical spindle and motor alignment reduces thermal distortion.
• Isolated Direct Drive (IDD) system reduces heat transfer and improves performance.
• Spindle motors rated at 30/35 HP deliver up to 653 Nm torque and speeds up to 6000/8000 rpm.
• Optional 2-speed gear spindle head with coolant-through design for efficient cooling.
• Coolant-through spindle system includes 600L reservoir, high-pressure pump, duplex filter with selectable pressures (20, 40, 70 bar), and 30 L/min flow rate.

Tooling and Attachments

• Horizontal head indexed in 90° increments (4 positions), optional 5° increments (72 positions) for complex machining.
• High-precision hardened spiral bevel gears reduce noise and shock in horizontal head.
• Extension head for narrow deep machining; 30-degree angle head for deep vertical wall and die/mold machining.
• Automatic Attachment Changer (AAC) with high hardness gear rack and pinion, servo motor drive for high accuracy and low vibration.
• 2-position AAC magazine with upper and lower seats, expandable for more stations.
• Automatic universal head for inclined plane machining.
• Standard tool magazine capacity of 30 tools, expandable to 40, 50, 60, or 90 tools.
• Double-arm tool changer powered by high-speed motor reduces tool change time to under 6 seconds.
• Convenient tool loading/unloading at spindle or magazine with foot pedal operation.

Inspection, Accuracy, and Accessories

• Comprehensive inspection includes kinematic measurement, rigidity test, straightness measurement, geometric accuracy inspection, and lighting measurement.
• Standard accessories: electrical cabinet cooling, spindle cooling, link-type chip conveyor, NC rotary table.
• Optional accessories: automatic tool length measuring system, automatic touch probe centering system.
• Optional CNC screen machine remote diagnosis via PC network enables remote troubleshooting, data transfer, and parameter revision (not operable in MDI mode).
• Chip conveyor selection based on chip type: steel belt conveyor for metallic chips, scraper type for dry chips under 60mm.

Machine Dimensions and Floor Space

Column distances range from 2100mm (82.6") to over 2300mm (90.55") depending on model. Machine base and guideway designs accommodate large workpieces and heavy loads.

RF Series Machine Specifications and Dimensions

1. Machine Dimensions and Travel Ranges

• Table sizes range from 1650x3000 mm (65"x118.1") up to 3000x8000 mm (118.1"x315").
• Travel distances vary by model: X-axis 3000-8000 mm, Y-axis 1800-3600 mm, Z-axis 2100-4250 mm.
• Distance between columns ranges from 1800 mm (70.9") to 3600 mm (141.7"), with tolerances of +2 mm / -0 mm.
• Floor space lengths up to 18900 mm (744.5") and widths between 5562 mm to 8095 mm (219.1" to 318.7").

2. Table and Load Capacities

• Maximum table loads range from 11000 kg (24200 lb) to 84000 kg (186000 lb) depending on model and table size.
• Table working surfaces correspond to table sizes, supporting heavy-duty machining.

3. Spindle Specifications

• Spindle speeds from 3500 rpm to 6000 rpm, optional 8000 rpm on some models.
• Spindle taper MAS403-BT50 with inline direct-drive (IDD) technology.
• Spindle motors rated at 22, 26, or 37 kW (30, 35, or 50 HP) with max torque 553, 653, or 1009 Nm.
• Number of spindle speeds typically 7 to 12, some models 8 to 12 speeds.

4. Feed Rates and Tool Handling

• Rapid traverse rates up to 15 m/min (590 ipm); cutting feed rates 1 to 8000 mm/min (0.1 to 314 ipm).
• Tool shank shape MAS-P50T-1 with pull studs; tool magazine capacities from 30 to 90 tools.
• Max tool diameters without adjacent tools: 130 mm (5.12") to 200 mm (7.87").
• Max tool length up to 350 mm (13.8") and tool weight up to 20 kg (41 lb).

5. Accuracy and Control

• Positioning accuracy ±0.005 mm per 300 mm; ±0.015 mm over full travel.
• Repeatability ±0.003 mm (±0.0001").
• Indexing accuracy 90° x 4 (optional 5° x 72), index repeatability ±3 seconds.
• CNC controllers include FANUC 0i/31i series, HEIDENHAIN, and SIEMENS.

6. Power and Utilities

• Electrical power supply: 70 KVA (optional 80 KVA).
• Compressed air supply: 5-7 kg/cm² (71-99.4 psi).

7. Standard and Optional Accessories

Standard accessories include coolant equipment, centralized automatic lubrication, rigid tapping, splash guards, work lights, spindle cooling, chip conveyors, and electrical cabinet cooling.

Optional accessories include various angle heads (manual, 30°, automatic universal), NC rotary tables, coolant-through spindle systems, thermal compensation, large capacity coolant tanks, fully enclosed splash guards, coolant purifying and cooling systems, hydraulic cooling, oil skimmer systems, anchoring alignment systems, and expanded tool magazines.

8. Summary of Key Parameters

9. Notes

Specifications and designs are subject to change without notice. Dimensions are in millimeters with inch equivalents in parentheses. Some parameters have optional values indicated.