Cutting tools
Cutting tools
| Symptoms of failure | Affected parts | Method of inspection | Cause of failure | Recommended action | Recommended action |
|---|---|---|---|---|---|
| Operation out of control (disconnected) | Switch | Check whether the switch is disconnected /damaged | Mixing in of foreign matter | Cleaning and foreign matter removal | Changing the switch |
| Decrepit (exceeded endurance limit) | Modifying and replacing the switch | Changing the switch | |||
| Impactful damage | |||||
| Socket damage and omission | |||||
| Code | Check whether the code is disconnected or not | Disconnection due to abnormal tension of code clip part when moving | Modifying and replacing the code part | Exchanging the code | |
| Phenomenon of code being gnawed due to misuse during operation | |||||
| Code socket damage and omission | |||||
| Switch connection | Check whether the switch is connected in order | Code lead wire socket damage and omission | Reconnect as shown in the picture in case of switch connection failure | Switch connection picture | |
| Connection failure | |||||
| Soft starter | Check the connection of the soft starter socket and for damage | Soft starter socket damage due to overload | Replacing the soft starter | Exchanging the soft starter | |
| Impactful damage | |||||
| Amateur | Check whether the amateur coil is disconnected | Coil burn-out thermic due to overload caused by excessive operation | Replacing the amateur | Exchanging the amateur | |
| In case of operation exceeding the rated using time | |||||
| Coil damage due to entry of foreign matter | Cleaning and replacing | ||||
| Stator | Check if the stator coil is disconnected /burned out | Burn-out stator due to overload caused by excessive operation | Replacing the stator | Exchanging the stator | |
| Operation exceeded the rated using time | |||||
| Coil damage due to entry of foreign matter | Cleaning and replacing | ||||
| Stator lead wire connection part damage | |||||
| Carbon brush | Check if the carbon brush is able to connect with the amateur commutator part | Use exceeded the carbon brush abrasion limit line | Replacing the carbon brush | Exchanging the carbon brush | |
| Spring operation failure due to assembling failure | |||||
| Entry of foreign matter into the brush holder | |||||
| Loose connection of amateur commutator part | |||||
| Safety cover | Check the operation of safety cover | Damage due to external impact | Modifying and replacing | Exchanging the safety cover | |
| Return spring damage | |||||
| Rock plate | Check the operation of rockplate | Damage and crushing due to external impact | Modifying and replacing | Exchanging the rock plate | |
| Damage and crushing due to operation while the product is rotating | |||||
| Base | Base operation | Damage due to external impact | Modifying and replacing | Exchanging the base | |
| Interference | Amateur, Stator | Check the amateur and stator for interference | Amateur, stator not duly reaching the housing | Modifying and replacing | Exchanging the amateur |
| Stator and amateur core failure | Exchanging the stator | ||||
| Bearing | In case of bearing abrasion and damage | In case of abrasion and damage due to exceeded endurance limit of bearing part | Replacing the bearing | Exchanging the bearing | |
| Processed goods | Check the processed goods / bearing's duly reaching part of projected goods for abrasion (gear cover, housing, packing grand) | Inappropriate bearing injection part's distance between shelves | Separate replacement in case of abrasion on each part | Housing arm | |
| Bearing injection part's abrasion due to exceeded endurance limit of each processed good/projected good | |||||
| Vibration | Amateur | Check the A/R shaft for bending and puncture | Amateur balance failure | Replacing the amateur | Exchanging the amateur |
| Check the amateur fan for bending | Deformation | ||||
| Bearing | Check the bearing for wear and damage | In case of abrasion due to decrepit bearing | Replacing the bearing | Exchanging the bearing | |
| In case of bearing damage | |||||
| Housing, Gear cover, Bearing holder | Check the coated film bearing's duly reaching part for abrasion | Bearing duly reaching part's abrasion due to exceeded endurance limit of coated film | Replacing | Exchanging the housing, gear cover | |
| Damage and deformation due to external impact | |||||
| Spindle | Check the spindle size | Spindle manufacturing failure | Replacing | Exchanging the gear, spindle | |
| Bending due to by external impact | |||||
| Tip saw blade | Check whether of the tip saw blade is shaking | Damage due to external impact | Replacing | Safety cover checkup | |
| Decrepit due to exceeded endurance limit | |||||
| Others | Wheel balance supporting stone shakes | Abnormal distortion due to humidity | Replacing the supporting stone with genuine goods (KEYANG ayr stone) | ||
| In case of manufacturing failure (check the floor plan) | Wheel damage occurred | ||||
| In case of using non-genuine goods part | Replacing the wheel nut with genuine goods | ||||
| Flame Failure | Carbon brush flame | Brush holder shaking | Scratching phenomenon of external diameter of amateur commutator and deformation | Replacing the amateur | Exchanging the amateur |
| Severe carbon brush damage and abrasion | |||||
| Carbon brush spring elasticity loss | Exceeded the carbon brush abrasion limiting line | Replacing the amateur, carbon brush | |||
| Flame due to carbon brush failure(equipment) | |||||
| Flame due to overheating | Check the contact between the amateur and the stator (interference) | Burn-out due to overload | Replacing the amateur, stator | Exchanging the amateur, stator | |
| Case concentricity failure | Replacing the case | Exchanging the case | |||
| Flame due to shaking | Check the bearing for damage | Bearing damage due to entry of foreign matter | Replacing the bearing | Exchanging the bearing | |
| Check the gear for excessive wear | Loosening of Coated Films and Processed goods (deformation) | Replacing the gear | Exchanging the gear | ||
| Amateur Flame | Check the commutator surface's degree of roughness | Scratching phenomenon of commutator | Replacing the amateur | Exchanging the amateur | |
| Check the commutator surface's degree of wear | Amateur balance failure | ||||
| Check whether the amateur coil is disconnected | Insulating paper damaged due to entry of foreign matter(dust) | ||||
| Check the amateur coil insulating paper for damage | Insulating paper damaged due to entry of foreign matter(dust) | ||||
| Stator Flame | Check the stator coil for wear | Burn-out due to overload | Replacing the stator | Exchanging the stator | |
| Check the stator coil insulating paper for damage | |||||
| Damage (broken) | Amateur | Check the amateur fan for damage | Damage due to mixing in of foreign matter | Replacing the amateur (check with the naked eye) | Exchanging the amateur |
| Sape deformation when releasing | |||||
| Check the amateur commutator part for damage | In case of using goods other than the manufacturer's goods | ||||
| Decrepitude due to exceeded term of guarantee | |||||
| Handle | Check the handle (A),(B) for damage | Material failure, external impact, deformation | Modifying and replacing the handle (check with the naked eye) | Exchanging the housing handle | |
| Processed goods (Coated Films) | Check the spindle for bending and damage | In case of spindle material failure | Replacing the spindle | Exchanging the spindle | |
| In case of heat treatment failure | |||||
| Deformation during disassembly and assembly of gear | |||||
| Bearing | Check the bearing for wear and damage | Decrepitude due to exceeded term of guarantee | Replacing the bearing | Exchanging the bearing | |
| Damage due to forcible injection of bearing | |||||
| Spindle, Gear | Check the processed goods chisel part for damage and wear | In case of overload due to operation exceeding the rated using time | Modifying and replacing | Exchanging the spindle, gear | |
| Decrepitude due to exceeded term of guarantee | |||||
| In case of material's heat treatment failure | |||||
| Electronic parts | Check the switch, carbon brush, and brush holder parts for damage | In case of excessive tightening of fixing bolt of brush holder part | Cleaning and replacing | Cleaning method | |
| In case of use of goods other than the manufacturer's goods for the carbon brush | Replacing each part in case of damaged switch, carbon brush, brush holder | ||||
| Exchanging the switch, carbon brush, brush holder | |||||
| Presspum | Check the switchholder and wheel cover for crushing and damage | In case of careless handling by the consumer | Replacing each part in case of crushed or damaged wheel guide | Replacing wheel guide | |
| Base safety cover | Check whether or not the Presspum is being crushed during operation | Damage due to external impact | Replacing | Exchanging the base, safety cover and housing | |
| Decrepitude due to exceeded endurance limit | |||||
| Stator | Check the stator core for damage | External impact | Replacing | Exchanging | |
| Rock plate | Check the rock plate for damage | External impact | Replacing the rock plate | Exchanging the rock plate | |
| Damage due to operation during product rotation | |||||
| Projected goods | Check the tail cover part for damage | In case of careless handling by the consumer | Replacing each part in case of crushed or damaged switch holder, wheel guide | Exchanging the switch | |
| Check the hand guard for damage | In case of decrepitude of each part's projected goods | Exchanging the wheel guide | |||
| Noise | Amateur | Abnormal noise ("woong") due to noise in the amateur | Amateur fan crushed and damaged | Replacing the amateur | Exchanging the amateur |
| Check the amateur chisel part for damage | |||||
| Spindle, Gear | Check the gear and pinion chisel part for wear and damage | In case of abnormal use during the term of guarantee (decrepitude) | Replacing | Exchanging the gear, spindle | |
| Check for abnormal noise | In case of chisel failure of the chisel part | ||||
| Check the gear injection condition | In case of damage & wear of gear chisel part | ||||
| Failure in gear injection | |||||
| Bearing | In case of bearing wear and damage | In case of wear and damage exceeding the endurance limit | Replacing | Exchanging | |
| Dust seal assembly omitted | |||||
| Others | Check whether or not the grease is adequate | Noise caused by insufficient grease | Supplement the grease | Injecting grease | |
| Check the bolt for loosening | |||||
| Output(RPM) decline | Amateur | Check the load current | Decrepitude due to exceeded endurance limit | Replacing the amateur | Exchanging the amateur |
| Amateur coil failure | |||||
| Amateur commutator fusing failure | |||||
| Stator | Check the stator coil for burn out due to overload | Overload heat splice(coil burn-out) | Replacing the stator | Exchanging the stator | |
| Bearing | Check whether the rotation is not smooth due to wear and damaged | Entry of foreign matter | Replacing the bearing | Exchanging the bearing | |
| Puncture during assembly | |||||
| Grease quantity | Check whether excessive grease has been injected | Grease over-injection (no-load current build-up) | Supplement the amount of grease | Supplement the amount of grease | |
| Housing, Base holder, Gear cover | Check the occurrence of blurring in case of abrasion caused by overuse of bearing injection part | Decrepitude due to exceeded endurance limit | Replacing | Exchanging the housing, gear cover, bearing | |
| Inappropriate bearing injection part's distance between shelves (no-load current build-up) | |||||
| Overheating | Amateur, Stator | Check the amateur and the stator for interference | Failure in case of fastening stator fixing bolt | Modifying and replacing | Exchanging the amateur |
| In case of bearing abrasion and damage | Exchanging the stator | ||||
| Bearing | Check the bearing for abrasion and damage | Check for wear and damage due to exceeded endurance limit of the bearing part | Replacing the bearing | Exchanging the bearing | |
| Bearing part dust seal assembly omitted | |||||
| Grease | Check if grease is spread dequately | In case of insufficient amount of grease | Supplement the amount of grease | Injecting grease | |
| Processed goods | Check the processed goods bearing's duly reaching part for abrasion (gear cover, housing, cylinder case, crank case) | In case of bearing injection part's abrasion due to exceeded endurance limit of each processed good | Separate replacement in case of abrasion on each part | Exchanging the gear cover | |
| Others | Failure in assembly of various parts (EX: insufficient tightening) | Assembling failure | Modifying various parts | Using observable related measuring instrument | |
| Check the voltage(V) | Check for the presence of voltage(V) | ||||
| Running idle | Spindle, Gear | Check the running idle of the Spindle, Gear | Heat treatment and inappropriate size | Replacing | Exchanging the spindle gear |
| Abrasion due to exceeded endurance limit | |||||
| Amateur, Gear | Check the amateur chisel part for gear abrasion | Heat treatment and inappropriate size | Replacing the amateur | Exchanging the amateur | |
| Exceeding the product specifications | |||||
| Washer, Flange bolt | Check if the flange bolt is fastened sufficiently | Measuring failure | Modifying and replacing | Exchanging the safety cover | |
| Abrasion due to exceeded endurance limit | |||||
| Check the spindle processing | |||||
| Leak | Amateur | Check the commutator for damage | Using the carbon brush fixture | Modifying and replacing | Exchanging the amateur |
| Check the amateur part coil for puncture | Amateur turning failure | Cleaning and replacing the amateur | |||
| Check the amateur coil part for foreign matter (dust) | Heat releasing caused by entry of foreign matter | ||||
| Stator | Check the coil for puncture and the insulating paper for damage | Coil and insulating paper burn-out caused by heat release due to mixing in of foreign matter | Replacing the stator | Exchanging the stator | |
| Foreign matter (dust) | Inadequate cleaning | Cleaning and replacing | |||
| Carbon brush | Entry of carbon brush powder into the amateur and stator | Quality problem of the carbon brush | Cleaning and replacing | Exchanging the amateur | |
| Inadequate cleaning | |||||
| Brush holder | Brush holder crack and damage | In case of excessive fastening of fixing bolt | Replacing the brush holder | Exchanging the brush holder | |
| Check the brush holder socket's inserting part | In case of burn-out of brush holder part due to heat release | ||||
| Code | Check whether the code sheath is peeled off | Consumer's carelessness | Modifying, replacing the code | Exchanging the code | |
| Check the code socket | Code failure | ||||
| Failure during assembly | |||||
| Switch | Switch soldering failure and damage | In case the sheath is peeled off while arranging the wire during the assembly process | Modifying and replacing the switch soldering | Exchanging the switch | |
| Connection layout | Check for squashing during arrangement | Assembling failure | Modifying the squashed part | Check with the naked eye whether the lead wire is squashed |