CNC Machine Tools Classification-2

1

TOSHIBA Maching Center

DC-350

Machine base/column: High-strength cast iron (FC300); Spindle: Alloy steel (SCM440) with nitride treatment; Linear guide: Bearing steel (SUJ2); Tool holder: Alloy steel (SKD11)

1. Spindle bearing wear due to long-term high-speed operation; 2. Linear guide wear caused by cutting chip intrusion; 3. Tool holder clamping surface wear from frequent tool changes

1. Control spindle speed within the rated range (max 10000 rpm) and replace spindle lubricating oil every 2000 operating hours; 2. Install a high-pressure coolant system and chip conveyor to prevent chip accumulation; 3. Clean the tool holder taper surface with alcohol before each tool change and check clamping force monthly

2

EC

EC850

Machine base/column: High-strength cast iron (FC350); Spindle: Alloy steel (SCM440) with TiAlN coating; Linear guide: Bearing steel (SUJ2); Ball screw: Bearing steel (SUJ2) with heat treatment

1. Ball screw wear due to insufficient lubrication; 2. Spindle thermal deformation caused by uneven workshop temperature; 3. Cast iron base corrosion in humid environments

1. Ensure the automatic lubrication system works normally and check oil level daily; 2. Maintain workshop temperature at 20±2℃ and start spindle preheating before machining; 3. Apply anti-rust oil to the base surface regularly and use dehumidifiers in humid workshops

1

TAKAMAZ FEELER

x-100C

Machine base/column: High-strength cast iron (FC250); Spindle: Alloy steel (SCM440) with nitride treatment; Chuck: Alloy steel (SKD11); Linear guide: Bearing steel (SUJ2)

1. Chuck jaw wear due to frequent clamping; 2. Spindle bearing wear caused by high-speed rotation; 3. Linear guide scratch from hard impurities

1. Replace chuck jaws every 3000 clamping times and use soft jaws for precision workpieces; 2. Monitor spindle load to avoid overload (load rate ≤80%); 3. Install a magnetic chip separator to remove iron impurities and clean the guide rail daily

2

MURATEC

MW200

Machine base/column: High-strength cast iron (FC250); Spindle: Alloy steel (SCM440) with TiN coating; Chuck: Alloy steel (SKD11); Ball screw: Bearing steel (SUJ2)

1. Ball screw wear due to coolant intrusion; 2. Spindle seal damage from long-term use; 3. Tool rest wear caused by frequent tool changes

1. Check spindle seal for leakage monthly and replace seals if necessary; 2. Use high-quality coolant and replace it every 3 months; 3. Inspect tool rest wear every 6 months and lubricate with high-temperature grease

3

CINCOM MIYANO

BNC-42C7

Machine base/column: High-strength cast iron (FC250); Spindle: Alloy steel (SCM440) with ceramic bearings; Chuck: Alloy steel (SKD11); Linear guide: Bearing steel (SUJ2)

1. Ceramic bearing damage due to improper maintenance; 2. Spindle thermal shock caused by rapid temperature changes; 3. Linear guide precision loss from vibration

1. Use special tools during spindle maintenance to avoid impact; 2. Avoid spraying coolant directly on the spindle after high-speed operation; 3. Install vibration-damping pads under the machine

4

CITIZEN

Cincom L20

Machine base/column: High-strength cast iron (FC250); Spindle: Alloy steel (SCM440) with nitride treatment; Chuck: Alloy steel (SKD11); Linear guide: Bearing steel (SUJ2)

1. Spindle motor bearing wear due to poor ventilation; 2. Linear guide lubrication failure from clogged oil passages; 3. Chuck clamping force loss due to wear

1. Keep the spindle motor cooling fan clean and unobstructed; 2. Clean oil passages quarterly to ensure smooth lubrication; 3. Test chuck clamping force monthly and adjust if necessary

5

OKUMA

LBR-370

Machine base/column: High-strength cast iron (FC300); Spindle: Alloy steel (SCM440) with TiAlN coating; Chuck: Alloy steel (SKD11); Linear guide: Bearing steel (SUJ2)

1. Linear guide wear due to heavy workpiece loading; 2. Spindle thermal deformation from long-term continuous operation; 3. Worktable corrosion in humid environments

1. Do not exceed the maximum workpiece weight specified by the machine; 2. Arrange 15-minute rest periods every 4 hours of continuous operation; 3. Apply anti-rust coating to the worktable and use dehumidifiers

6

MIYANO

BNA42

Machine base/column: High-strength cast iron (FC250); Spindle: Alloy steel (SCM440) with ceramic bearings; Chuck: Alloy steel (SKD11); Tool rest: Aluminum alloy (6061-T6)

1. Tool rest wear due to heavy tool loading; 2. Ceramic bearing damage from foreign object collision; 3. Spindle air seal failure leading to dust intrusion

1. Do not exceed the maximum tool weight limit; 2. Keep the machining area clean and free of foreign objects; 3. Check air pressure of the spindle air seal system daily (pressure ≥0.4 MPa)

7

MORI SEIKI

NLX2500

Machine base/column: High-strength cast iron (FC300); Spindle: Alloy steel (SCM440) with nitride treatment; Chuck: Alloy steel (SKD11); Ball screw: Bearing steel (SUJ2)

1. Ball screw wear due to insufficient lubrication; 2. Spindle seal wear from long-term use; 3. Worktable T-slot wear from workpiece clamping

1. Ensure the automatic lubrication system supplies oil normally; 2. Replace spindle seals every 12 months; 3. Use protective pads when clamping workpieces to avoid direct contact with T-slots

8

CITIZEN

Cincom R07

Machine base/column: High-strength cast iron (FC250); Spindle: Alloy steel (SCM440) with ceramic bearings; Chuck: Alloy steel (SKD11); Linear guide: Bearing steel (SUJ2)

1. Spindle vibration caused by unbalanced tools; 2. Linear guide scratch from hard chips; 3. Ceramic bearing thermal shock from rapid cooling

1. Balance tools before use and replace worn tools; 2. Install a chip guard around the linear guide; 3. Let the spindle cool naturally after high-speed operation

9

CITIZEN

Cincom M32

Machine base/column: High-strength cast iron (FC250); Spindle: Alloy steel (SCM440) with nitride treatment; Chuck: Alloy steel (SKD11); Linear guide: Bearing steel (SUJ2)

1. Chuck jaw deformation due to over-clamping; 2. Spindle motor overheating from poor ventilation; 3. Linear guide precision degradation from vibration

1. Use torque wrenches to control clamping force; 2. Clean the spindle motor cooling fan regularly; 3. Install vibration-damping foundations for the machine

10

CITIZEN

Cincom A16

Machine base/column: High-strength cast iron (FC250); Spindle: Alloy steel (SCM440) with TiN coating; Chuck: Alloy steel (SKD11); Linear guide: Bearing steel (SUJ2)

1. Tool wear leading to increased spindle load; 2. Linear guide wear from chip accumulation; 3. Spindle seal damage from coolant contamination

1. Replace tools regularly according to machining volume; 2. Clean the linear guide daily and re-lubricate; 3. Use filtered coolant to avoid contamination

11

CITIZEN

Cincom A20

Machine base/column: High-strength cast iron (FC250); Spindle: Alloy steel (SCM440) with TiN coating; Chuck: Alloy steel (SKD11); Linear guide: Bearing steel (SUJ2)

1. Spindle bearing wear due to high-speed machining of hard materials; 2. Linear guide lubrication failure from oil leakage; 3. Chuck clamping surface wear from workpiece sliding

1. Reduce spindle speed when machining hard materials (HRC＞50); 2. Check for oil leakage in the lubrication system daily; 3. Use workpiece transfer carts to avoid sliding on the chuck

12

MORI SEIKI

NTX1000

Machine base/column: High-strength cast iron (FC300); Spindle: Alloy steel (SCM440) with ceramic bearings; Chuck: Alloy steel (SKD11); Linear guide: Bearing steel (SUJ2)

1. Ceramic bearing damage from improper handling; 2. Ball screw wear due to coolant intrusion; 3. Tool magazine indexing error from gear wear

1. Use professional tools during maintenance; 2. Check spindle seal for leakage monthly; 3. Inspect tool magazine gears every 6 months and lubricate

13

O-M Ltd

Neo-16

Machine base/column: High-strength cast iron (FC250); Spindle: Alloy steel (SCM440) with nitride treatment; Chuck: Alloy steel (SKD11); Linear guide: Bearing steel (SUJ2)

1. Spindle thermal deformation from uneven coolant temperature; 2. Linear guide scratch from falling workpieces; 3. Chuck wear from long-term use

1. Maintain coolant temperature at 20±2℃ with a chiller; 2. Operate with care to avoid workpiece collisions; 3. Inspect chuck wear annually and replace if necessary

1

TOYODA JTEKT

GE4

Machine base/column: High-strength cast iron (FC300); Grinding wheel spindle: Alloy steel (SCM440) with nitride treatment; Worktable: Cast iron (FC300) with hard chrome plating; Linear guide: Bearing steel (SUJ2)

1. Grinding wheel spindle bearing wear due to high-speed rotation; 2. Worktable chrome plating wear from workpiece sliding; 3. Linear guide wear from grinding dust

1. Balance the grinding wheel every 50 operating hours; 2. Use fixtures to fix workpieces and avoid sliding; 3. Install a dust collection system to remove grinding dust

2

Wuxi-Koyo

KC-300

Machine base/column: High-strength cast iron (FC300); Grinding wheel spindle: Alloy steel (SCM440) with TiAlN coating; Worktable: Cast iron (FC300) with hard chrome plating; Linear guide: Bearing steel (SUJ2)

1. Spindle thermal deformation from uneven temperature; 2. Linear guide lubrication failure from dust contamination; 3. Grinding wheel wear leading to increased spindle load

1. Maintain workshop temperature at 20±2℃; 2. Clean the linear guide and lubricate with dust-proof grease; 3. Replace the grinding wheel when wear exceeds 10% of the original diameter

3

Okamoto

PSG-63DX

Machine base/column: High-strength cast iron (FC350); Grinding wheel spindle: Alloy steel (SCM440) with ceramic bearings; Worktable: Cast iron (FC300) with hard chrome plating; Linear guide: Bearing steel (SUJ2)

1. Ceramic bearing damage from thermal shock; 2. Worktable corrosion in humid environments; 3. Linear guide precision loss from vibration

1. Avoid rapid cooling of the spindle after high-temperature operation; 2. Use dehumidifiers and apply anti-rust oil to the worktable; 3. Install vibration-damping pads under the machine

4

WAIDA

JG-45UMX

Machine base/column: High-strength cast iron (FC350); Grinding wheel spindle: Alloy steel (SCM440) with nitride treatment; Worktable: Cast iron (FC300) with hard chrome plating; Linear guide: Bearing steel (SUJ2)

1. Spindle bearing wear due to insufficient lubrication; 2. Linear guide scratch from hard impurities; 3. Grinding wheel spindle runout due to improper installation

1. Check the lubrication system pressure daily (≥0.3 MPa); 2. Clean the guide rail surface with a non-abrasive cloth; 3. Ensure the grinding wheel is correctly installed and tightened

1

TOYO

T-10N

Machine base/column: High-strength cast iron (FC300); Worktable: Cast iron (FC300) with copper plating; Electrode holder: Copper alloy (CuCrZr); Linear guide: Bearing steel (SUJ2)

1. Electrode holder wear due to frequent electrode clamping; 2. Worktable copper plating wear from electrical discharge; 3. Linear guide wear from dielectric fluid contamination

1. Clean the electrode holder clamping surface before each change; 2. Inspect worktable copper plating every 3 months and re-plate if necessary; 3. Filter the dielectric fluid monthly to remove impurities

2

MITSUBISHI

EA8A

Machine base/column: High-strength cast iron (FC300); Worktable: Cast iron (FC300) with copper plating; Electrode holder: Copper alloy (CuCrZr); Linear guide: Bearing steel (SUJ2)

1. Electrode wear leading to machining accuracy deviation; 2. Linear guide lubrication failure from dielectric fluid intrusion; 3. Spindle seal damage from long-term use

1. Replace electrodes when wear exceeds 5%; 2. Use lubricants resistant to dielectric fluid; 3. Replace spindle seals every 12 months

3

TOYO

Si-100V

Machine base/column: High-strength cast iron (FC350); Worktable: Cast iron (FC300) with copper plating; Electrode holder: Copper alloy (CuCrZr); Linear guide: Bearing steel (SUJ2)

1. Worktable deformation from uneven heating; 2. Linear guide precision loss from vibration; 3. Dielectric fluid deterioration leading to poor machining quality

1. Maintain uniform electrical discharge parameters to avoid local overheating; 2. Install vibration-damping foundations; 3. Replace dielectric fluid every 6 months

4

SODICK

GL100A

Machine base/column: High-strength cast iron (FC350); Worktable: Cast iron (FC300) with copper plating; Electrode holder: Copper alloy (CuCrZr); Linear guide: Bearing steel (SUJ2)

1. Electrode holder clamping force loss due to wear; 2. Linear guide scratch from foreign objects; 3. Spindle motor overheating from poor ventilation

1. Test electrode holder clamping force monthly; 2. Keep the machining area clean; 3. Clean the spindle motor cooling fan regularly

5

TOYO

BD 350 V5

Machine base/column: High-strength cast iron (FC350); Worktable: Cast iron (FC300) with copper plating; Electrode holder: Copper alloy (CuCrZr); Linear guide: Bearing steel (SUJ2)

1. Worktable copper plating corrosion from moisture; 2. Linear guide wear from chip accumulation; 3. Electrode holder damage from improper electrode installation

1. Use dehumidifiers in the workshop; 2. Install a chip conveyor to remove machining chips; 3. Install electrodes with care to avoid collision

1

AIDA

NCI-E SERIES

Arm body: Aluminum alloy (6061-T6) with anodizing treatment; Reducer: Alloy steel (SCM440); Motor: High-strength aluminum alloy shell; Gripper: Engineering plastic (PA6) + steel insert

1. Reducer wear due to long-term high-frequency operation; 2. Gripper wear from frequent clamping; 3. Arm body corrosion in humid environments

1. Lubricate the reducer every 3 months and replace oil every 12 months; 2. Replace gripper pads every 2000 clamping times; 3. Apply anti-corrosion coating to the arm body and use dehumidifiers

2

Komatsu NTC

SP 300Di

Arm body: Aluminum alloy (6061-T6) with anodizing treatment; Reducer: Alloy steel (SCM440); Motor: High-strength aluminum alloy shell; Gripper: Alloy steel (SKD11)

1. Reducer gear wear due to overload operation; 2. Motor bearing wear from poor ventilation; 3. Gripper deformation from over-clamping

1. Avoid exceeding the maximum load capacity of the arm; 2. Keep the motor cooling fan clean and unobstructed; 3. Use torque sensors to control clamping force

3

YAMAHA

YAMAHA 250 350 400

Arm body: Aluminum alloy (6061-T6) with anodizing treatment; Reducer: Alloy steel (SCM440); Motor: High-strength aluminum alloy shell; Gripper: Engineering plastic (PA66) + steel insert

1. Linear guide wear of the arm due to dust contamination; 2. Gripper wear from machining chip adhesion; 3. Reducer noise due to insufficient lubrication

1. Install a dust cover on the arm guide rail; 2. Clean the gripper after each shift; 3. Check the reducer lubrication level weekly and replenish in time

4

YASKAWA

MOTOMAN-HP,MH

Arm body: Aluminum alloy (6061-T6) with anodizing treatment; Reducer: Alloy steel (SCM440); Motor: High-strength aluminum alloy shell; Gripper: Alloy steel (SKD11)

1. Arm joint wear due to long-term rotation; 2. Motor overheating from continuous operation; 3. Gripper clamping surface wear from workpiece sliding

1. Inspect arm joint wear every 6 months; 2. Arrange 10-minute rest periods every 3 hours of continuous operation; 3. Use anti-slip pads on the gripper clamping surface

5

YAMAZAN

ymz-155-60G

Arm body: Aluminum alloy (6061-T6) with anodizing treatment; Reducer: Alloy steel (SCM440); Motor: High-strength aluminum alloy shell; Gripper: Engineering plastic (PA6) + steel insert

1. Reducer wear due to vibration; 2. Gripper damage from workpiece collision; 3. Arm body anodizing layer wear from friction

1. Install vibration-damping pads under the equipment; 2. Set up safety sensors to avoid collisions; 3. Avoid contact between the arm body and hard objects

6

YAMAZAN

ymz-155-60G

Arm body: Aluminum alloy (6061-T6) with anodizing treatment; Reducer: Alloy steel (SCM440); Motor: High-strength aluminum alloy shell; Gripper: Engineering plastic (PA6) + steel insert

1. Motor bearing wear due to dust intrusion; 2. Gripper wear from frequent use; 3. Reducer lubrication failure from oil leakage

1. Install a dust cover on the motor; 2. Replace gripper components every 3000 working hours; 3. Check for oil leakage in the reducer monthly

How to select the appropriate CNC machine tool according to the workpiece material and machining requirements?

Select based on material properties and machining needs: For soft materials (aluminum, copper) with mass-produced threaded holes, choose tapping centers; for hard materials (alloy steel) with complex surfaces, choose vertical/horizontal machining centers; for rotating workpieces (shafts, sleeves), choose lathes; for high-precision surface grinding of hard materials, choose grinding machines; for complex-shaped hard alloy parts, choose EDM. Also consider workpiece size, precision requirements (e.g., IT5-IT7 for precision machining), and production batch to ensure cost-effectiveness.

What are the key indicators to judge the wear of CNC machine tool spindle?

Key indicators include: 1. Radial runout: Measured with a dial gauge, if it exceeds 0.001 mm, the bearing is severely worn; 2. Vibration amplitude: Measured with a vibration tester, amplitude exceeding 0.01 mm indicates abnormal wear; 3. Machining precision: Positioning accuracy deviation exceeding the manual standard indicates spindle wear; 4. Lubricating oil condition: A large amount of metal debris in the oil indicates spindle component wear.

How to maintain the dielectric fluid of EDM to ensure machining quality?

Maintenance measures: 1. Regular replacement: Replace every 6 months or when the dielectric fluid becomes turbid; 2. Filtration: Use a high-precision filter (filter accuracy ≤5 μm) to remove impurities monthly; 3. Temperature control: Maintain dielectric fluid temperature at 20±3℃ with a chiller; 4. Moisture control: Use a dehumidifier to avoid moisture entering the dielectric fluid, which affects discharge stability.