WM210V - Metal Lathe Vevor - Free user manual and instructions

USER MANUAL WM210V Vevor

Technical Support and E-Warranty Certificate www.vevor.com/support

We continue to be committed to provide you tools with competitive price. "Save Half", "Half Price" or any other similar expressions used by us only represents an estimate of savings you might benefit from buying certain tools with us compared to the major top brands and does not necessarily mean to cover all categories of tools offered by us. You are kindly reminded to verify carefully when you are placing an order with us if you are actually Saving Half in comparison with the top major brands.- 1 -

(The picture is for reference only, please refer to the actual object) Have product questions? Need technical support? Please feel free to contact us: Technical Support and E-Warranty Certificate www.vevor.com/support NEED HELP? CONTACT US! This is the original instruction, please read all manual instructions carefully before operating. VEVOR reserves a clear interpretation of our user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you again if there are any technology or software updates on our product. Metal lathe- 2 - Warning-To reduce the risk of injury, user must read instructions manual carefully. This product is subject to the provision of European Directive 2012/19/EC. The symbol showing a wheelie bin crossed through indicates that the product requires separate refuse collection in the European Union. This applies to the product and all accessories marked with this symbol. Products marked as such may not be discarded with normal domestic waste, but must be taken to a collection point for recycling electrical and electronic devices

MATTERS NEEDING ATTENTION

The information contained in this handbook is intended as a guide to the operation of these machines and does not form part of any contract.The data it contains has been obtained from the machine manufacturer and from other sources. Whilst every effort has been made to ensure the accuracy of these transcriptions it would be impracticable to verify each and every item. Furthermore, development of the machine may mean that the equipment supplied may differ in detail from the descriptions herein. The responsibility therefore lies with the user to satisfy himself that the equipment or process described is suitable for the purpose intended. QUALITY ASSURANCE We will make every effort to ensure the quality of our products, and we promise to consumers that we will guarantee our products for one year, except for machine damage caused by improper operation of customers, and accidents resulting therefrom, or abnormal wear and damage caused by lack of maintenance. Our company reserves the right to make changes to this specification and product specifications. We will make continuous efforts to improve the quality of our products. All rights reserved. Reproduction or reproduction is not allowed without permission.- 3 - SAFETY WARNING Symbol Symbol Description Warning - To reduce the risk of injury, user must read instructions manual carefully. This symbol, placed before a safety comment, indicates a kind of precaution, warning, or danger. Ignoring this warning may lead to an accident. To reduce the risk of injury, fire, or electrocution, please always follow the recommendation shown below. Danger! Risk of personal injury or environmental damage! Risk of electric shock! Risk of personal injury by electric shock! Direct current Beware of clamping Warning- Be sure to wear ear protectors when using this product. Warning- Be sure to wear eye protectors when using this product. Do not put hands into safety guard when machine is working No entry automatic machinery in operation Autherized personnel only Do not fill oil during operation Do not turn during repair- 4 - No fatigue operation The operation is no phone calls WARNING：Read all safety warnings, instructions, illustrations and specifications provided with this machine. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury. Save all warnings and instructions for future reference. 1.The machine tool should be used by experienced personnel. If you are not familiar with the operation process of the lathe, do not use the machine tool at will Use the instructions before operating. 2.Before starting the machine tool, the safety cover should be in the correct position. 3.Before starting the machine tool, please check whether the tool rest wrench and chuck key are removed. 4.Prevent the machine from starting accidentally. Turn off the motor power before clamping the workpiece or tool. 5.Don't force cut. Cutting according to the set cutting speed, cutting depth and feed speed. 6.Use the right tools. Use the correct tool or workpiece for machining. 7.Keep the tool sharp and clean to ensure normal and safe operation. Lubricate and replace accessories regularly. 8.Before adjusting or repairing the machine, be sure to disconnect the power supply.

9. Please check the safety performance of the machine before starting it.

Check the performance of all moving parts. All parts must be installed correctly. Damaged parts must be repaired promptly.- 5 -

10. When the machine is running, the operator shall not leave.

11. Keep the working place clean, dirty working environment is easy to lead to

12. Do not use the machine in dangerous environment.

Do not work in damp places. Ensure that electrical components are protected from moisture. Keep good lighting.

13. Children are prohibited from entering the work site, and non-operating

personnel should keep a safe distance from the work area.

14. To keep children out of the work area. The door should be locked when leaving

15. Dress appropriately. Don't wear loose clothing, gloves, ties, rings, bracelets,

jewelry, etc. To be on the safe side, build discuss wearing non-slip shoes. If you have long hair, please wear a work hat.

16. Wear protective glasses when operating.

17. Pay attention to where you stand and keep your balance at all times.

18. Do not place your hands near the moving parts of the machine.

19. Do not perform any setting operations while the machine is running.

20. Read and understand all warning signs posted on the machine.

21. This manual is intended only to familiarize customers with the operation of the

machine and is not a training manual.

22. Please obey these warnings or serious injury may result.

23. The machine will produce some harmful chemicals in the work of dust, sawing,

grinding and drilling produced by grinding. To reduce the harm of these chemicals, please work in a well-ventilated place and wear safety devices. Such as particulate filter masks.- 6 - TECHNICAL PARAMETER Type number WM210V Capacities Swing over Bed 210mm Swing over Cross Slide 110mm Distance Between Centers 370mm Width of Bed 100mm Headstock Hole Through Spindle 21mm Taper in Spindle Nose MT3 Number of Spindle Speeds Variable Range of Spindle Speeds 50-2500RPM Feeding and Threading Number of Metric Threads

Range of Metric Threads 0.3~3mm Number of 1mperiaI Threads

Range of 1mperiaI Threads 10~44T.P.I. Range of Longitudinal Feed 0.089-0.198mm Compound and Carriage Tool Post Type

Maximum Compound Slide Travel 80mm Maximum Cross Slide Travel 85mm Maximum Carriage Travel 370mm Tailstock Tailstock Spindle Travel 50mm Taper in Tailstock Spindle MT2 Miscellaneous Main Motor 110V~60Hz/220V~50Hz,550W, Product Weight N.W:60.6Kg; G.W:78.4Kg Package Size 905*455*540 mm The general information given in this specification is not binding.- 7 - Standard accessories

2. Rear chip plate 1

Accessories in the tool box (Fig. 1 ) 1 Dead Center MT3 1 Dead Center MT2 3 Tool post wrench 1 Oil Gun 1 Cross screwdriver 1 Flat screwdriver 1 Key for 3-Jaw Chuck 5 Hex socket wrenches 3 Double End Head wrenches 9 Pulley set (24T,33T,35T,40T,50T,52T,60T,66T,72T ) Special accessories（Accessories that require additional payment） Four jaw chuck and back plate (connecting plate) Heel rest Center frame Back disk Disjointed disk Tool rest protection cover Lead screw protective cover Turning tool Drill chuck and connecting rod Fig. 1- 8 -

UNCRATING AND CLEAN.UP

1. Finish removing the wooden crate from around the lathe

2. Check all the accessories of the machine tool according to the packing

3. Unbolt the lathe from the shipping crate bottom.

4. Choose a location for the lathe that is dray, has good lighting and has

enough room to be able to service the lathe on all four sides.

5. With adequate lifting equipment, slowly raise the lathe off the shipping

crate bottom. Do not lift by spindle. Make sure lathe is balanced before moving to sturdy bench or stand.

6. To avoid twisting the bed, the lathe's location must be absolutely flat and

level. Bolt the lathe to the stand (if used). If using a bench, through bolt for best performance.

7. Clean all rust protected surfaces using a mild commercial solvent,

kerosene or diesel fuel. Do not use paint thinner, gasoline or lacquer thinner. These will damage painted surfaces. Cover all cleaned surfaces with a light film of 20W machine oil.

8. Remove the end gear cover. Clean all components of the end gear

assembly and coat all gears with a heavy, non-slinging grease. FOUNDATION DRAWING Fig. 2- 9 - Lathe Bed (Fig. 3) The lathe bed is made of high-grade iron. By combining high cheeks with strong cross ribs, a bed of low vibration and rigidity is produced. It integrates the headstock and drive unit, for attaching the carriage and leadscrew. The two precision-ground V - sideways, re-enforced by heat hardening and grinding, are the accurate guide for the carriage and tailstock. The main motor is mounted to the rear of the leftside of the bed. Fig. 3 Headstock (Fig. 4) The headstock is cast from high grade,low vibration cast iron.1t is bolted to the bed with four screws.The headstock houses the main spindle with two precision taper roller bearings and the drive unit. The main spindle transmits the torque during the turning process.1t also holds the workpieces and clamping devices. (e.g.3-jawchuck). Fig. 4- 10 - Carriage (Fig. 5) The carriage is made from high quality cast iron. The slide parts are smoothly ground.They fit the V on the bed without play. The lower sliding parts can be easily and simply adjusted.The cross slide is mounted on the carriage and moves on a dove tailed slide.Play in the cross slide may be adjusted with the gibs. Move the cross slide with its conveniently positioned handwheel. There is a graduated collar on the handwheel. A four way tool post is fitted on the top slide and allows four tools to be clamped.Loosen the center clamp handle to rotate any of the four tools into position. Fig. 5 Apron (Fig. 6) The apron is mounted on the bed. It houses the half nut with an engaging lever for activating the automatic feed. The half nut gibs can be adjusted from the outside. A rack, mounted on the bed, and a pinion operated by handwheel on the carriage allow for quick travel of the apron. Fig. 6- 11 - Leadscrew The lead screw (A, Fig.7) is mounted on the front of the machine bed It is connected to the gear box at the left for automatic feed and is supported by bearing on both ends. The hex nut(B,Fig.7)on the right end is designed to take up play on the lead screw. Fig.7 Tailstock (Fig. 8) The tailstock slides on a V way and can be clamped at any location. The tailstock has a heavy-duty spindle with a Morse taper No. 2 socket and a graduated scale. The spindle can be clamped at any location with a clamping lever. The spindle is moved with a handwheel at the end of the tailstock. Fig.8 Notice: Fit the securing screw (C, Fig. 8) at the end of the lathe in order to prevent the tailstock from falling off the lathe bed.- 12 -

1. Emergency :Button 0N.0FF Switch (D,Fig. 9)

The machine is switched on and off with ON/OFF button. Depress to stop all machine functions. To restart, lift the cover and press ON button.

2. Change-over Switch(E,Fig. 9)

After the machine is switched on, turn the switch to "F" position for counter-clockwise spindle rotation(forward). Turn the switch to"R" position for clockwise spindle rotation(reverse) ."0"position is OFF and the spindle remains idle.

3. Variable Speed Control Switch (F,Fig. 9)

Turn the switch clock wise to increase the spindle speed. Turn the switch counter-clockwise to decrease the spindle speed. The possible speed range is dependent from the position of the drive belt. Fig.9 Fig.10 4﹒Carriage Lock Turn hex socket cap screw (A, Fig. 10) clockwise and tighten to lock. Turn counter-clockwise and loosen to unlock. Caution: carriage lock screw must be unlocked before engaging automatic feeds or damage to lathe may occur.- 13 - 5﹒Longitudinal Traverse Handwheel (B,Fig.11) Rotate hand wheel clockwise to move the apron assembly toward the tailstock (right). Rotate the hand wheel counter-clockwise to move the apron assembly to ward the headstock(left). 6﹒Cross Traverse Lever (C,Fig. 11) Clock wise rotation moves the cross slide toward the rear of the machine. 7﹒Half Nut Engage Lever (D,Fig. 11) Move the lever down to engage. Move the lever up to disengage. 8﹒Compound Rest Traverse Lever (E,Fig. 11) Rotate clockwise or counter-clockwise to move or position. 9﹒Tool Post Clamping Lever (F,Fig. 11) Rotate counter-clockwise to loosen and clockwise to tighten. Rotate the tool post when the lever is unlocked. Fig.11- 14 - 10﹒Tailstock Clamping screw (G,Fig. 12) Turn hex nut clockwise to lock and counter-clockwise to unlock. 11﹒Tailstock Quill Clamping Lever (H,Fig. 12) Rotate the lever clockwise to lock the spindle and counter-clockwise to unlock. 12﹒Tailstock Quill Traverse Handwheel (I,Fig. 12) Rotate clockwise to advance the quill. Rotate counter- clockwise to retract the quill. 13﹒Tailstock off-set Adjustment (J,Fig. 12) Three sets screws located on the tailstock base are used to off-set the tailstock for cutting tapers. Loosen lock screw on tailstock end. Loosen one side set screw while tightening the other until the amount of off-set is indicated on scale. Tighten lock screw. Fig﹒12- 15 - Replacement of Chuck The head spindle holding fixture is cylindrical. Loose three set screws and nuts (A, Fig. 13 only two are shown)on the la the chuck flange to remove the chuck. Position the new chuck and fix it using the same set screws and nuts. Fig. 13 Fig. 14

Clamp the turning tool into the toolholder. The tool must be clamped firmly. When turning, the tool has a tendency to bend under the cutting force generated during the chip formation. For best results, tool overhang should be kept to a minimum of 3/8" or less. The cutting angle is correct when the cutting edge is inline with the center axis of the work piece. The correct height of the tool can be achieved by comparing the tool point with the point of the center mounted in the tailstock. If necessary, use steel spacer shims under the tool to get the required height. (Fig. 14)- 16 - Change Speed

1. Unscrew the two fastening screws (B, Fig.15) and remove the

2. Adjust the V-belt(C,Fig.16)corresponding position.

3. Tighten the tension pulley and fasten the nut again.

Fig. 15 Fig. 16 Manual Turning Apron travel, cross travel, and top slide handwheel can be operated for longitudinal or cross feeding. (Fig.17) Fig. 17- 17 - Longitudinal Turning with Auto.Feed Use the table (A, Fig.18) on the lathe for selecting the feed speed or the thread pitch. Adjust the change gear if the required feed or thread pitch cannot be obtained with the installed gear set. Fig. 18 Fig. 19 Change Gears Replacement

1. Disconnect the machine from the power source.

2. Unscrew the two fastening screws and remove the protective cover.

3. Loosen the locking screw (B, Fig.19) on the quadrant.

4. Swing the quadrant (C, Fig. 19) to the right.

5. Unscrew the nut (D, Fig.29) from the leadscrew or the nuts (E, Fig.19)

from the quadrant bolts in order to remove the change gears from the front.

6. Install the gear couples according to the thread and feed table (Fig.20)

and screw the gearwheels onto the quadrant again.

7. Swing the quadrant to the left until the gearwheels have engaged again.

8. Readjust gear backlash by inserting a normal sheet of paper as an

adjusting or distance aid between the gearwheels.

9. Immobilize the quadrant with the locking screw.

10. Install the protective cover of the headstock and reconnect the machine

to the power supply.- 18 - THREADINGANDFEEDINGTABLE Fig. 20- 19 - Straight Turning (Fig. 21) In the straight turning operation, the tool feeds parallel to the axis of rotation of the workpiece. The feed can be either manual by turning the handwheel on the lathe saddle or the top slide, or by activating the automatic feed. The crossfeed for the depth of cut is achieved using the cross slide. Caching and Oecesses ( Fig. 22 ) In the facing operation, the tool feeds perpendicular to the axis of rotation of the workpiece. The feed is made manually with the cross slide handwheel. The crossfeed for cut depth is made with the top slide or lathe saddle.- 20 - Turning: Between Benters ( Fig. 23 ) For turning between centers, it is necessary to remove the chuck from the spindle. Fit the M. T. 3 center into the spindle nose and the M.T. 2 center into the tailstock. Mount the workpiece fitted with the driver dog between the centers. The driver is driven by a catch or face plate. Note: Always use a small amount of grease on the tailstock center to prevent center tip from overheating. Taper Turning Using Tailstock Off-Set La the Work to a side angle of 5 can be turned by off- setting the tailstock. The angle depends on the length of the workpiece. To off-set the tailstock, loosen locking screw (A, Fig.24). Unscrew the set screw (B, Fig.24) on right end of the tailstock. Loosen the front adjusting screw( C, Fig.24 ) and take up the same amount by tightening the rear adjusting screw (D, Fig.24) until the desired taper has been reached. The desired cross- adjustment can be read off the scale. (E, Fig.24 ). First retighten the set screw (B, Fig,24) and then the two (front and rear) adjusting screw to lock the tailstock in position. Retighten the locking screw (A, Fig.24) of the tailstock. The workpiece must be held between to centers and driven by a face plate and driver dog.- 21 - After taper turning, the tailstock should be returned to its original position according to the zero position on the scale of tailstock. (E, Fig.24) Fig. 24 Thread Cutting Set the machine up to the desired thread pitch (according to the threading chart, Fig.20). Start the machine and engage the half nut. When the tool reaches the part, it will cut the initial threading pass. When the tool reaches the end of the cut, stop the machine by turning the motor off and at the same time back the tool out of the part so that it clears the thread. Do not disengage the half nut lever. Reverse the motor direction to allow the cutting tool to traverse back to the starting point. Repeat these steps until you have obtained the desired results. NOTES Example: Male Thread The workpiece diameter must have been turned to the diameter of the desired thread. The workpiece requires a chamfer at the beginning of the thread and an undercut at the thread runout. The speed must be as low as possible. The change gears must have been installed according to the required pitch. The thread cutting tool must be exactly the sample shape as the thread, must be absolutely rectangular and clamped so that it coincides exactly with the turning enter.- 22 - The thread is produced in various cutting steps so that the cutting tool has to be turned out of the thread completely (with the cross slide) at the end of each cutting step. The tool is withdrawn with the leadscrew nut engaged by inverting the change-over switch. Stop the machine and feed the thread cutting tool in low cut depths using the cross slide. Before each passage, place the top slide approximately 0.2 to 0.3mm to the left and right alternately in order to cut the thread free. This way, the thread cutting tools cuts only on one thread flank with each passage. Keep cutting the thread free until you have almost reached the full depth of thread. Fig. 25 Three Jaw Universal Lathe Chuck Using this universal chuck round triangular square hexagonal octagonal and twelve,cornered stock may be clamped. (Fig.26) Note: new lathes have very tight fitting jaws. This is necessary to ensure accurate clamping and long service life- with repeated opening and closing the jaw adjust automatically and their operation becomes progressively Smoother. Note: For the original 3 jaw chuck that mounted on the lathe the factory has mounted the chuck in the best way to guarantee the holding accuracy with two "." mark (A) Fig.26 showed on the chuck and chuck flange.- 23 - Fig. 26 There are two types of jaws: Internal and external jaws- Please note that the number of jaws fit with the number inside the chuck,s groove. Do not mix them together. When you are going to mount them please mount them in ascending order 0, 1 , 3 when you are going to take them out be sure to take them out in descending order 3,1,0 one by one- After you finished this procedure rotate the jaws to the smallest diameter and check that the three jaws are well fitted. Four Jaw Independent Lathe Chuck This special chuck has four independently adjustable chuck jaws- These permit the holding of asymmetrical pieces and enable the accurate set,up of cylindrical pieces. (Fig.27)- 24 - Drill Chuck ( optional) Use the drill chuck to hold centering drills and twist drills in the tailstock- (B) (Fig.28) Morse Taper Arbor (optional) An arbor is necessary for mounting the drill chuck in the tailstock. It has a No. 1 Morse taper. (C) Fig.28 Fig. 28 Live Center (optional) The live center is mounted in ball bearings- Its use is highly recommended for turning at speeds in excess of 6.RPM. ( Fig.29) Fig. 29- 25 - Steady Rest The steady rest serves as a support for shafts on the free tailstock end. For many operations the tailstock can not be used as it obstructs the turning tool or drilling tool, and therefore, must be removed from the machine. The steady rest, which function as an end support, ensures chatter- free operation. The steady rest is mounted on the bedways and is secured from below with a locking plate. The sliding fingers require continuous lubrication at the contact points to prevent premature wear. (Fig.30) Fig. 30 Setting the Steady Rest

1. Loosen three hex nuts. (A, Fig.31)

2. Loosen knurled screw (B, Fig.36) and open the sliding

fingers. (C, Fig.31) until the steady rest can be moved with its finger around the workpiece. Secure the steady rest in position. 3 . Tighten knurled screws so that fingers are snug but not tight against the workpiece. Tighten three nuts (A, Fig.31). Lubricate the sliding points with machine oil.

4. When, after prolonged operation, the jaw show wear, the tips of the

fingers may be filed or remilled.- 26 - Follow Rest The follow rest is mounted on the saddle and follows the movement of the turning tool. only two sliding fingers are required. The place of the third finger is taken by the turning tool. The follow rest is used for turning operations on long, slender workpieces. 1t prevents flexing of the workpiece under pressure from the turning tool. ( Fig.31 ) Set the fingers snug to the workpiece but not overly tight. Lubricate the fingers during operation to prevent premature wear. Fig. 31 After a period time, wear in some of the moving components may need to be adjusted. Main spindle Bearings The main spindle bearings are adjusted at the factory. 1f end play becomes evident after considerable use, the bearings may be adjusted. Fasten the slotted nut (A, Fig.32) on the back of the spindle, loosen the outer slotted nut (B, Fig.32). Adjust the slotted nut (A, Fig.32) until all end play is taken up. The spindle should still revolve freely. Fasten the slotted nut (A, Fig.32) again and tighten the outer slotted nut (B, Fig.32).- 27 - Caution: excessive tightening or preloading will damage the bearings. Fig. 32 Adjustment of Cross slide The cross slide is fitted with a gib strip(C, Fig.33) and can be adjusted with screws (D, Fig.33) fitted with lock nuts. (E, Fig.33) Loosen the lock nuts and tighten the set screws until slide moves freely without play. Tighten lock nuts to retain adjustment. Fig. 33- 28 - Adjustment of Top sIide The top slide is fitted with a gib strip(F, Fig.34) and can be adjusted with screws (G, Fig. 34) fitted with lock nuts. (H, Fig. 34) Loosen the lock nuts and tighten the set screws until slide moves freely without play. Tighten lock nuts to retain adjustment. Fig. 34 Adjustment of HaIf Nut Guide The half nuts engagement can be adjusted with screws (I, Fig.35) fitted with lock nuts (J, Fig.35). Loosen the nuts on the right side of the apron and adjust the control screws until both half nuts move freely without play. Tighten the nut. Fig. 35 I- 29 -

NOTES: Lubricate all slideways lightly before every use. Lubricate the change gears and the leadscrew slightly with a lithium-based grease.

Lubricate Four oil ports (A, Fig. 36) with 20W machine oil once daily.

Lubricate two oil ports (B , Fig. 36 ) with 20W machine oil once daily. Fig. 36- 30 -

Lubricate the left oil port ( C Fig. 37) and right oil port (D, Fig.38) with 20W machine oil once daily. Fig. 37 Fig. 38 Electricity The WM210V Lathe is rated at 550W, 1PH, 110V/220V only. Confirm power available at the lathe' s location is the same rating as the lathe. Using the wiring diagram ( Fig. 39 ) for connecting the lathe to the mains supply. Make sure the lathe in properly grounded. WARNING! Connection of the lathe and all other electrical work may only be carried out by an authorized electrician! Failure to comply may cause serious injury and damage to the machinery and property!- 31 - The following is wiring diagram of the lathe: (Fig.39) Keep the maintenance of the machine tool during the operation to guarantee the accuracy and service life of the machine tool.

1. In order to retain the machine's precision and functionality. it is

essential to treat it with care. keep it clean and grease and lubricate it regularly. Only through good care. you can be sure that the working quality of the machine will remain constant. NOTES: Disconnect the machine plug from the mains supply whenever you carry out cleaning, maintenance or repair work! Oil, grease and cleaning agents are pollutants and must not be disposed of through the drains or in normal refuse. Dispose of those agents in accordance with current legal requirements on the environment. Cleaning rags impregnated with oil, grease and cleaning agents are easily inflammable. Collect cleaning rags or- 32 - cleaning wool in a suitable closed vessel and dispose of them in an environmentally sound way - do not put them with normal refuse!

2. Lubrication all slideways lightly before every use. The change

gears and the leadscrew must also be lightly lubricated with lithium base grease.

3. During the operation. the chips which falls onto the sliding surface

should be cleaned timely. and the inspection should be often made to prevent chips falling into the position between the machine tool saddle and lathe bed guide way. Asphalt felt should be cleaned at certain time. NOTES: Do not remove the chips with your bare hands. There is a risk of cuts due to sharp.edged chips. Never use flammable solvents or cleaning agents or agents that generate noxious fumes! Protect electrical components such as motors, switches, switch boxes, etc., against humidity when cleaning.

4. After the operation every day. eliminate all the chips and clean

different part of the machine tool and apply machine tool oil to prevent rusting.

5. In order to maintain the machining accuracy. take care of the center.

the surface of the machine tool for the chuck and the guide way and avoid mechanical damage and the wear due to improper guide.

6. If the damage is found. the maintenance should be done

immediately. NOTES: Repair work may only be carried out by qualified personnel with the corresponding mechanical and electrical knowledge.- 33 - TROUBLESHOOTING Problem Possible Reason Elimination Surface of work piece too rough Tool blunt Re.sharpen tool Tool springs Clamp tool with less overhang Feed too high Reduce feed Radius at the tool tip too small Increase radius Workpiece becomes coned Centers are not aligned (tailstock has offset) Adjust tailstock to the center Top slide not aligned well (cutting with the top slide) Align top slide well Lathe is chattering Feed too high Reduce feed Slack in main bearing Adjust the main bearing Center runs hot Workpiece has expanded Loosen tailstock center Tool has a short edge Cutting speed too high Reduce cutting speed Tool has a short Life Crossfeed too high Lower crossfeed(finishing allowance should not exceed 0.5mm) Insufficient cooling More coolant Flank wear too high Clearance angle too small 1ncrease clearance angle Tool tip not adjusted to center high Correct height adjustment of the tool Cutting edge breaks off Wedge angle too small (heat build.up) Increase wedge angle Grinding crack due to wrong cooling Cool uniformly Excessive slack in the spindle bearing Adjust the slack in the spindle bearing Arrangement (vibrations) Arrangement Cut thread is wrong Tool is clamped incorrectly or has Adjust too to the center Been started grinding the wrong way Grind angle correctly Cut thread is wrong Wrong pitch Adjust the right pitch Wrong diameter Turn the workpiece to the correct diameter Spindle does not activate Emergency stop switch activated Unlock emergency stop switch- 34 -

BREAKDOWN DIAGRAM AND PARTS LIST

Headstock Assembly- 35 - Parts No. Description specification Qty Parts No. Description specification Qty

Top slide, Cross slide, Carriage Assembly- 37 - Parts No. Description Specification Qty Parts No. Description Specification Qty

Apron Assembly- 39 - Parts No. Description Specification Qty Parts No. Description Specification Qty

Bed, hanging wheel parts Assembly- 41 - Parts No. Description Specification Qty Parts No. Description Specification Qty

Tailstock Assembly Parts No. Description Specification Qty Parts No. Description Specification Qty

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