SlideShare une entreprise Scribd logo
1  sur  8
1

SAFETY OPERATIONAL INSTRUCTIONS
A. GENERAL SAFETY
    Protect your eyes by wearing safety glasses.
    Wear shoes with oil resistant soles.
    If you have long hair, tie is back.
    Do not wear long sleeves, loose clothing or neck ties.
    Make sure that your area is free from chips, oil and
      coolant spills, air hoses or anything that may get in
      your way and make you to fall or slip.
    Make sure that all cutting tools and work holding
      equipment are tight before running the spindle or
      moving the slides.
    All maintenance and repair work should be done with
     the power off. If any work requires power ON, extreme
     care should be taken.
    Keep the machine always clean and keep away the tools
      and gauges from getting damaged.
15
B. MECHANICAL SAFETY
Care should be taken when removing a part for replacement
  or repair. Make sure that any connected or supported part
  can be safety left in the machine. If not, they should be
  removed also. Where orientation of adjacent parts may be
  important, matchmark parts before removing them.
When performing power ON maintenance or checking of
  moving parts, extreme caution should be taken. These parts
  can cause serious injury.
The machine should be lubricated according to the machine
   lubrication information given in this manual.
When performing maintenance of the hydraulic systems, the
  power must be OFF and there should be no pressure in the
  lines.
If you have removed any cover/guard for some reason, don’t
 forget to refit them before you start the machine.
16

C. SAFETY CHECK ON THE MACHINE – BEFORE START

Check the voltage and current.
Check the lubricant tank oil level.
Check the hydraulic tank oil level.
Check the clamping devices.
Check and clean the machine.
Check the clamping stock.
17

  D. SAFETY CHECK ON THE MACHINE
Check the main pressure of the hydraulic/pneumatic system
Check the clamping pressure of the hydraulic/pneumatic
 system for chuck/fixture.
Check the chuck function.
Lubricate the clamping device if any manual.
Move the slides to Ref. point in Ref. point return mode.
Jog the slides to and fro and check the sliding movement.
Check the Centralized lubricant System manual of pressing
 app. Switches.
Check the coolant supply by pressing app. Switches.
Check the selectable zero offset entries.
18
      MAINTENANCE
 A. PREVENTIVE MAINTENANCE
 Many of the service problems that occur over the lift of any Machine
   tool can be avoided through the application of proper Preventive
   maintenance practices. The purpose of this section Of the manual is to
   help you in setting up a regular schedule of Periodic preventive
   maintenance measures for your CNC lathe.
 Keeping the machine clean is an important part of preventive
   Maintenance. Cleaning the machine takes only a few minutes Each
   shift when done on a regular basis. A program of this type Helps
  in keeping the point from becoming stained and the bright Metal
  parts from becoming rusted or discolored. Wipe the Machine
  thoroughly with a rig soaked in kerosene., if the machine Is in an
  atmosphere where bright metal parts rust quickly , wipe them with
  a rag soaked in clear mineral oil .never use Caustic cleaner or
 cleaning compounds on the machine because the abrasion can Ruin
 the finish . Do not use air for cleaning purpose. The pressure will drive
 dirt and Chips into bearing surfaces.
B PREVENTIVE MAINTENANCE CHECK LIST
                                                                               19
   The following maintenance intervals are suggested for use under
   Optimum conditions. If environmental conditions warrant, the
   Frequency of maintenance intervals should be increased.
 Every eight hours of machine operation:
 1) Check cleanliness of slideways.
 2) Check slideway lubrication.
 3) Check hydraulic oil reservoir level.
 Every forty hours of machine operation:
 1) Wash the machine throughly and wipe down.
 Every one hundred and sixty hours of machine operation:
 1) Clean oil filters.
 2) Check for dirt, oil and water inside the machine electronic cabinet.
 3) Check for an air tight seal of the machine electronic cabinet.
 4) Check tightness of screws on terminal boards and relays
Every thousand hours of machine operation:
1) Check all motor drive belts for deterioration, wear and tension.
2) Clean and wash all way wipers and check for wear condition.
3) Drain and flush main hydraulic oil reservoir and refill with fresh hydraulic oil.
20
   C. NORMAL OVERHAUL CHECK LIST FOR HYDROLIC SYSTEM

  1) Send sample oil drawn from tank for laboratory or makers test.
  2) Drain off oil, store top 90 percent in clean, dry drums. Drain off remaining
      ten percent and scrap.
  3) Clean out sludge in tank, check for rust and condition of paint. Scrape and
      paint if required with correct paint.
  4) Change element of air breather on tank or clean element in solvent and
      replenish with correct oil, according to type.
  5) Clean strainer in tank filling plug.
  6) Replace elements in main filters.
  7) Examine flexible hoses for signs of deterioration of lining, proper attachment
       of end fittings and possible cracking here and at points of maximum flexing.
  8) Check free running of pump and motor.
  9) Check for end play and side play in pump and motor shafts, indicating
     bearing wear.
10) Check free movement of valve spool etc.
• Check for operations of solenoids and relays.
 11) Top up oil to correct level.
12) Tighten oil pipe connections. Do not over strain.
21
                 MACHINING CENTRES

  These are very important types of CNC Machine Tools and are
multifunction Machines equipped with automatic tool changers
and are capable of carrying out milling, drilling, teaming, tapping,
boring, counter boring and allied operations-without operator
intervention for change of tools
ACCORDING TO THE SPINDLE CONFIGURATION
Horizontal spindle machining centers
Vertical spindle machining centers
Universal machining centers

Contenu connexe

Tendances

Chapter 7 measurement of surface finish
Chapter 7 measurement of surface finishChapter 7 measurement of surface finish
Chapter 7 measurement of surface finish
VISHALM580
 
Mechanical drives & power transmission
Mechanical drives & power transmissionMechanical drives & power transmission
Mechanical drives & power transmission
James Shearer
 
selection of robot
selection of robotselection of robot
selection of robot
nabil130290
 

Tendances (20)

Adaptive control System
Adaptive control SystemAdaptive control System
Adaptive control System
 
Automatic lathes
Automatic lathes Automatic lathes
Automatic lathes
 
Chapter 7 measurement of surface finish
Chapter 7 measurement of surface finishChapter 7 measurement of surface finish
Chapter 7 measurement of surface finish
 
Sheet metal-operations
Sheet metal-operationsSheet metal-operations
Sheet metal-operations
 
FUNDAMENTALS OF CNC & PART PROGRAMMING - UNIT - 4 CAD&M
FUNDAMENTALS OF CNC & PART PROGRAMMING - UNIT - 4 CAD&MFUNDAMENTALS OF CNC & PART PROGRAMMING - UNIT - 4 CAD&M
FUNDAMENTALS OF CNC & PART PROGRAMMING - UNIT - 4 CAD&M
 
Flexible manufacturing systems (FMS)
Flexible manufacturing systems (FMS)Flexible manufacturing systems (FMS)
Flexible manufacturing systems (FMS)
 
Apt programming
Apt programmingApt programming
Apt programming
 
Automobile Engineering ppt
Automobile Engineering  pptAutomobile Engineering  ppt
Automobile Engineering ppt
 
Cnc control systems
Cnc control systemsCnc control systems
Cnc control systems
 
NC, CNC & DNC Machine
NC, CNC & DNC Machine NC, CNC & DNC Machine
NC, CNC & DNC Machine
 
Mechanical drives & power transmission
Mechanical drives & power transmissionMechanical drives & power transmission
Mechanical drives & power transmission
 
Chapter 2 constructional feature of cnc machine
Chapter 2 constructional feature of cnc machineChapter 2 constructional feature of cnc machine
Chapter 2 constructional feature of cnc machine
 
Cnc feed drives
Cnc feed drivesCnc feed drives
Cnc feed drives
 
Group technology
Group technologyGroup technology
Group technology
 
NC AND CNC
NC AND CNCNC AND CNC
NC AND CNC
 
Group technology, Production flow Analysis
Group technology, Production flow AnalysisGroup technology, Production flow Analysis
Group technology, Production flow Analysis
 
COMPUTER AIDED PROCESS PLANNING (CAPP)
COMPUTER AIDED PROCESS PLANNING (CAPP)COMPUTER AIDED PROCESS PLANNING (CAPP)
COMPUTER AIDED PROCESS PLANNING (CAPP)
 
Computer Aided Process Planning (CAPP)
Computer Aided Process Planning (CAPP)Computer Aided Process Planning (CAPP)
Computer Aided Process Planning (CAPP)
 
selection of robot
selection of robotselection of robot
selection of robot
 
Mechanical CNC machine
Mechanical CNC machineMechanical CNC machine
Mechanical CNC machine
 

Similaire à CNC Machine Maintenance

Komatsu pc210 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc210 lc 6 hydraulic excavator service repair manual (a82001 and up)Komatsu pc210 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc210 lc 6 hydraulic excavator service repair manual (a82001 and up)
fisdkjekemms
 
Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)
fisdkjekemms
 
Komatsu pc250 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc250 lc 6 hydraulic excavator service repair manual (a82001 and up)Komatsu pc250 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc250 lc 6 hydraulic excavator service repair manual (a82001 and up)
eudskkejedmm
 
Komatsu pc200 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc200 hydraulic excavator service repair manual (a82001 and up)Komatsu pc200 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc200 hydraulic excavator service repair manual (a82001 and up)
fisdkjekemms
 

Similaire à CNC Machine Maintenance (6)

Komatsu pc210 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc210 lc 6 hydraulic excavator service repair manual (a82001 and up)Komatsu pc210 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc210 lc 6 hydraulic excavator service repair manual (a82001 and up)
 
Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)
 
Komatsu pc200 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc200 lc 6 hydraulic excavator service repair manual (a82001 and up)Komatsu pc200 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc200 lc 6 hydraulic excavator service repair manual (a82001 and up)
 
Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc220 lc 6 hydraulic excavator service repair manual (a82001 and up)
 
Komatsu pc250 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc250 lc 6 hydraulic excavator service repair manual (a82001 and up)Komatsu pc250 lc 6 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc250 lc 6 hydraulic excavator service repair manual (a82001 and up)
 
Komatsu pc200 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc200 hydraulic excavator service repair manual (a82001 and up)Komatsu pc200 hydraulic excavator service repair manual (a82001 and up)
Komatsu pc200 hydraulic excavator service repair manual (a82001 and up)
 

Plus de illpa (20)

Geometric Modeling
Geometric Modeling Geometric Modeling
Geometric Modeling
 
Arc welding & safty
Arc welding & saftyArc welding & safty
Arc welding & safty
 
Resistance Welding
Resistance WeldingResistance Welding
Resistance Welding
 
Theodolites
TheodolitesTheodolites
Theodolites
 
Bridge
BridgeBridge
Bridge
 
Arches
ArchesArches
Arches
 
Computer Aided Design
Computer Aided DesignComputer Aided Design
Computer Aided Design
 
Fire Safety
Fire SafetyFire Safety
Fire Safety
 
Pumps
PumpsPumps
Pumps
 
Air Pollution
Air PollutionAir Pollution
Air Pollution
 
Mixing Moulding
Mixing MouldingMixing Moulding
Mixing Moulding
 
welding
weldingwelding
welding
 
Sand Casting
Sand CastingSand Casting
Sand Casting
 
Bridge
Bridge Bridge
Bridge
 
DC Motors
DC MotorsDC Motors
DC Motors
 
Introduction to VLSI
Introduction to VLSI Introduction to VLSI
Introduction to VLSI
 
Two way slab
Two way slabTwo way slab
Two way slab
 
footing
footingfooting
footing
 
Design of Beam for Shear
Design of Beam for ShearDesign of Beam for Shear
Design of Beam for Shear
 
limit state method
limit state methodlimit state method
limit state method
 

CNC Machine Maintenance

  • 1. 1 SAFETY OPERATIONAL INSTRUCTIONS A. GENERAL SAFETY Protect your eyes by wearing safety glasses. Wear shoes with oil resistant soles. If you have long hair, tie is back. Do not wear long sleeves, loose clothing or neck ties. Make sure that your area is free from chips, oil and coolant spills, air hoses or anything that may get in your way and make you to fall or slip. Make sure that all cutting tools and work holding equipment are tight before running the spindle or moving the slides. All maintenance and repair work should be done with the power off. If any work requires power ON, extreme care should be taken. Keep the machine always clean and keep away the tools and gauges from getting damaged.
  • 2. 15 B. MECHANICAL SAFETY Care should be taken when removing a part for replacement or repair. Make sure that any connected or supported part can be safety left in the machine. If not, they should be removed also. Where orientation of adjacent parts may be important, matchmark parts before removing them. When performing power ON maintenance or checking of moving parts, extreme caution should be taken. These parts can cause serious injury. The machine should be lubricated according to the machine lubrication information given in this manual. When performing maintenance of the hydraulic systems, the power must be OFF and there should be no pressure in the lines. If you have removed any cover/guard for some reason, don’t forget to refit them before you start the machine.
  • 3. 16 C. SAFETY CHECK ON THE MACHINE – BEFORE START Check the voltage and current. Check the lubricant tank oil level. Check the hydraulic tank oil level. Check the clamping devices. Check and clean the machine. Check the clamping stock.
  • 4. 17 D. SAFETY CHECK ON THE MACHINE Check the main pressure of the hydraulic/pneumatic system Check the clamping pressure of the hydraulic/pneumatic system for chuck/fixture. Check the chuck function. Lubricate the clamping device if any manual. Move the slides to Ref. point in Ref. point return mode. Jog the slides to and fro and check the sliding movement. Check the Centralized lubricant System manual of pressing app. Switches. Check the coolant supply by pressing app. Switches. Check the selectable zero offset entries.
  • 5. 18 MAINTENANCE A. PREVENTIVE MAINTENANCE Many of the service problems that occur over the lift of any Machine tool can be avoided through the application of proper Preventive maintenance practices. The purpose of this section Of the manual is to help you in setting up a regular schedule of Periodic preventive maintenance measures for your CNC lathe.  Keeping the machine clean is an important part of preventive Maintenance. Cleaning the machine takes only a few minutes Each shift when done on a regular basis. A program of this type Helps in keeping the point from becoming stained and the bright Metal parts from becoming rusted or discolored. Wipe the Machine thoroughly with a rig soaked in kerosene., if the machine Is in an atmosphere where bright metal parts rust quickly , wipe them with a rag soaked in clear mineral oil .never use Caustic cleaner or cleaning compounds on the machine because the abrasion can Ruin the finish . Do not use air for cleaning purpose. The pressure will drive dirt and Chips into bearing surfaces.
  • 6. B PREVENTIVE MAINTENANCE CHECK LIST 19 The following maintenance intervals are suggested for use under Optimum conditions. If environmental conditions warrant, the Frequency of maintenance intervals should be increased. Every eight hours of machine operation: 1) Check cleanliness of slideways. 2) Check slideway lubrication. 3) Check hydraulic oil reservoir level. Every forty hours of machine operation: 1) Wash the machine throughly and wipe down. Every one hundred and sixty hours of machine operation: 1) Clean oil filters. 2) Check for dirt, oil and water inside the machine electronic cabinet. 3) Check for an air tight seal of the machine electronic cabinet. 4) Check tightness of screws on terminal boards and relays Every thousand hours of machine operation: 1) Check all motor drive belts for deterioration, wear and tension. 2) Clean and wash all way wipers and check for wear condition. 3) Drain and flush main hydraulic oil reservoir and refill with fresh hydraulic oil.
  • 7. 20 C. NORMAL OVERHAUL CHECK LIST FOR HYDROLIC SYSTEM 1) Send sample oil drawn from tank for laboratory or makers test. 2) Drain off oil, store top 90 percent in clean, dry drums. Drain off remaining ten percent and scrap. 3) Clean out sludge in tank, check for rust and condition of paint. Scrape and paint if required with correct paint. 4) Change element of air breather on tank or clean element in solvent and replenish with correct oil, according to type. 5) Clean strainer in tank filling plug. 6) Replace elements in main filters. 7) Examine flexible hoses for signs of deterioration of lining, proper attachment of end fittings and possible cracking here and at points of maximum flexing. 8) Check free running of pump and motor. 9) Check for end play and side play in pump and motor shafts, indicating bearing wear. 10) Check free movement of valve spool etc. • Check for operations of solenoids and relays. 11) Top up oil to correct level. 12) Tighten oil pipe connections. Do not over strain.
  • 8. 21 MACHINING CENTRES These are very important types of CNC Machine Tools and are multifunction Machines equipped with automatic tool changers and are capable of carrying out milling, drilling, teaming, tapping, boring, counter boring and allied operations-without operator intervention for change of tools ACCORDING TO THE SPINDLE CONFIGURATION Horizontal spindle machining centers Vertical spindle machining centers Universal machining centers