CHESTER DB8VS Manuel utilisateur
DB8VS
LATHE
Manual
Chester UK Lt
d
Clwyd Close
Hawarden Industrial Par
k
Hawarden
Chester CH5
3PZ
Tel: 01244
531631
sales@chesterma
ch
i
n
etools.com
www.
ch
esterma
ch
i
n
etools.com
Safety guidelines
Personnel working with any machine tools are required to follow the safety instructions stated below in order to
prevent any accident that may occur.
• Appropriate personal protective equipment (such as safety glasses, dust coat, shoes etc..) must be worn
whilst operating the machine.
• Long hair or ties must be tightened up.
• Hand gloves should never be used.
• Workpieces and cutting tools must be properly clamped.
• Chuck keys must be removed when not in use.
• Do not leave any loosened parts on the machine table.
• Ensure you know how to operate the machine before switching on.
• Machine guards must be put in position when in use.
• Keep hands away from any rotating objects.
• Cutters used should be correctly ground and in good condition.
• Use the correct cutting speed, feed rate, and depth of cut from time to time.
• Spilled oil or cutting fluid must be swiped off immediately.
• Never use a hand file or emery cloth for finishing lathe work pieces.
• Do not leave a running machine unattended.
Index
1. Machine Markings ………………………………………………………………………………………………… 4
2. Proper Use ………………………………………………………………………………………………………… 4
3. Technical Data …………………………………………………………………………………………………….. 4
4. Safety Indications …………………………………………………………………………………………………. 5
4.1 Residual Risk …………………………………………………………………………………………………. 5
5. Transport of the Machine ………………………………………………………………………………………… 6
6. Unpacking and Cleaning …………………………………………………………………………………………. 6
6.1 Cleaning the Machine ……………………………………………………………………………………….. 6
7. Extent of supply and accessories ……………………………………………………………………………….. 7
7.1 Extras ………………………………………………………………………………………………………….. 7
8. Installing the Machine ……………………………………………………………………………………………. 8
8.1 Using a substructure ………………………………………………………………………………………… 8
8.1.1 Using the Machine with the Substructure ………………………………….……………………. 8
8.1.2 Installation Drawing ………………………………………………………………………………… 9
9. Power Connection ……………………………………………………………………………………………….. 10
9.1 Lathes with Frequency Connector …………………………………………………………………….……10
10. Control Elements ……………………………………………………………………………………………….... 11
11. Design of the Lathe ……………………………………………………………………………………………… 12
11.1 Lathe Bed …………………………………………………………………………………………………... 12
11.2 Headstock ………………………………………………………………………………………………….. 12
11.3 Lathe Saddle ………………………………………………………………………………………………. 12
11.4 Tailstock ……………………………………………………………………………………………………. 12
12. Operation of the Lathe …………………………………………………………………………………………. 13
12.1 Lathe saddle with cross and top slide ………………………………………………………………….. .13
12.1.2 Turning tapers with the cross slide …………………………………………………………….... 13
12.2 Tailstock ……………………………………………………………………………………………………. 13
12.3 Speed and Feed …………………………………………………………………………………………... 14
12.3.1 Arrangement of belt drive and feed gear ……………………………………………………….. 14
12.3.2 Adjusting the speed ……………………………………………………………………………….. 14
12.3.3 Adjusting the feed ………………………………………………………………………………..... 15
12.3.4 Pitches for thread-cutting ………………………………………………………………………..... 15
13. Adjustments on the lathe ………………………………………………………………………………………. 16
13.1 Guide rail with adjusting gib on the lathe saddle …………………………………………………. 16
13.2 Tapered gib on the cross slide ……………………………………………………………………… 16
13.3 Tapered gib on the top slide ………………………………………………………………………... 16
13.4 Adjusting the tapered gib for the leadscrew nut ………………………………………………….. 16
13.5 Adjusting the lathe chuck guard ……………………………………………………………………. 17
13.6 Replacing the clamping devices on the head spindle holding fixture …………………………... 17
13.7 Fitting the follow rest (optional) ………………………………………………………………………17
14. Working notes and tools………………………………………………………………………………………… 18
14.1 Turning operations ……………………………………………………………………………………. 18
14.1.1 Straight turning ………………………………………………………………………………… 18
14.1.2 Facing and recesses ………………………………………………………………………….. 18
14.1.3 Turning between centres ……………………………………………………………………… 18
14.1.4 Turning short tapers with the top slides ……………………………………………………… 19
14.1.5 Thread-cutting (example of male thread) ……………………………………………………. 19
14.2 Cutting tool types and indications ……………………………………………………………………. 19
14.3 Bits and countersinks ………………………………………………………………………………….. 20
15. Maintenance ……………………………………………………………………………………………………… 21
15.1 Machine care ………………………………………………………………………………………….. 21
15.2 Lubrication……………………………………………………………………………………………… 21
15.3 Maintenance …………………………………………………………………………………………… 21
16. Warranty …………………………………………………………………………………………………………... 21
17. Troubleshooting ………………………………………………………………………………………………….. 22
18. Wiring diagram …………………………………………………………………………………………………… 23
19. Exploded views and spare parts list ……………………………………………………………………………. 24
1. Machine Markings
This machine bears a characteristics plate with the name of the machine, item number, and key technical data. Keep it
clean and legible at all times.
2. Proper Use
This lathe has been designed and manufactured for straight turning and facing round or regularly-formed three, six or
twelve square workpieces in metal, plastic, or similar materials. The leadscrew also enables thread cutting.
Do not use this machine for materials that constitute a heath hazard or create dust, such as wood, Teflon, etc..
Follow the indications of this manual, as well as the information labels on the lathe. This machine is suitable for use in
schools, industrial workshops, and for d.i.y work.
Note:
Any unauthorised modifications to this machine, improper use or disregard for the safety standards, will
exempt the manufacturer from any liability for resulting harm to persons or objects and shall result in the
invalidity of claims under the guarantee.
3. Technical Data
Max. Swing over bed
210mm
Distance between centres
400mm
Max. Swing over cross-slide
110mm
Centre height
105mm
Width of bed
135mm
Toolpost tool size
10mm
Speed range
50-2500rpm
Cross-slide travel
110mm
Chuck diameter
100mm
Spindle bore
21mm
Spindle taper
MT3
Tailstock quill travel
70mm
Tailstock taper
MT2
Metric threads can be cut
0.403mm
Inch threads can be cut
10-44TPI
Motor power
750W (1hp)
Net weight
110kg
Dimensions
1050 x 560 x 570mm
4. Safety Indicators
Read the operating and maintenance instructions carefully before starting, using or performing maintenance work on
the machine, and prior to any other operations. Only authorised personnel who are completely familiar with the
machines handling and working principles are authorised to use it.
Repair, maintenance and upgrading may only be carried out by technical personnel and when the machine is switched
off.
• Check that the workpiece is properly positioned before starting
• Never place your hands close to rotating parts when working with the machine
• Do not remove sharp edged chips by hand, use a hand brush or chip hook
• Use the protection devices and attach them firmly. Never work without protection devices; keep them in
proper working condition. Check that they are operational before starting any work
• Keep the machine and it’s working environment clean at all times. Use sufficient lighting when working
• Secure workpieces with adequate clamping devices when working. Provide an adequate supporting surface
• Do not alter the machine. Do not use for any purposes other than those directed by the manufacturer
• Do not work on the machine if your concentration is reduced as a result of illness, fatigue, drugs, alcohol, or
medication
• Remove keys and other loose parts after assembling or repairing the machine, and before starting it
• All safety and warning labels on the machine must be observed and kept intact and legible
• Keep children and any persons unfamiliar with the machine away from the work area ,machine, and any tools
• The machine may only be used, set up and maintained by persons familiar with and instructed in the relevant
dangers
• During maintenance, commission, and repair, always switch off the machine. Disconnect the plug from the
power supply
• To remove the plug from the power outlet, do not pull the cord. Protect the cord from heat, oil, and sharp
edges
• Ensure that the main switch is in the off position when connecting the machine to the mains in order to
prevent accidental start up
• Wear a well-fitting work suit, goggles, safety shoes and ear protection. Tie long hair back. Do not wear
watches, bracelets, necklaces, rings, or gloves whilst working
• Immediately element any anomalies which may affect safety
• Never leave the machine unattended when running. Stay by it until the tool has come to a complete stop. Pull
the plug to prevent the machine from being switched on accidentally
• Keep the machine dry
• Never use electrical tools and machines near flammable liquids and gases
• Before using the machine, ensure that no components are damaged. Damaged components must be
replaced immediately in order to prevent possible danger
• Do not overload the machine. It is better and safer to work within the indicated performance range. Use the
correct tool, and ensure that they are not blunt or damaged
• To prevent risk of danger and accidents, only use the original spare parts and accessories for your machine
4.1 Residual risk
Even when all safety standards are observed, and the machine is used properly, there still remains some residual risk,
such as:
• Touching rotating pieces or tools
• Breakage of tools
• Damage as a result of components or parts of components flying off at high speed
• Fire hazard in case of insufficient ventilation of the motor
• Contact with live parts
• Damage to hearing when working for long periods without ear protection
All machines involve some residual risk. Any operations should be performed with due care.
5. Transport of the machine
This machine would normally be delivered in a special transport case. Keep it and reuse it.
All bright metal parts are lubricated to protect them from humidity and dirt.
Do not stack the machine. To prevent damage, do not deposit objects on the machine during transportation and
storage.
Protect the machine from moisture and rain. Keep electrical equipment dry.
Take the weight into account when transporting and installing the machine. Make sure that the means of transport and
the base on which the machine will be deposited can bear the load.
6.Unpacking and cleaning
The machine comes pre-assembled. Please check the machine immediately after receiving for any damage incurred
during transportation. If you spot any damage, immediately inform the transport operator and authorised dealer.
6.1 Cleaning the machine
Before transportation, all bright parts of the machine are thoroughly greased with protective wax and grease to avoid
corrosion.
Before commissioning, clean the machine with a suitable environmental-friendly cleaning agent (such as stove
distillate). Do not use any solvents, thinners, or other cleaning agents which might corrode the varnish on the
machine.
Follow the specifications and instructions of the manufacturer of the cleaning agent. Ventilate the area well when
cleaning in order to avoid any health hazards due to fumes.
Once the machine has been cleaned, all bright metal parts must be lightly lubricated. Use a non-corrosive lubricating
oil for this purpose.
Warning: Many cleaning agents are combustible and are highly flammable. Do not smoke when handling cleaning
agents.
Note: Oil, grease, and cleaning agents are pollutants and must be disposed of carefully. Dispose of these agents in
accordance with current legal requirements. Cleaning rags impregnated with oil, grease, and cleaning agents are
flammable. Dispose of these carefully.
7. Extent of supply and accessories
Included with your machine:
• Lathe
• 3 and 4 jaw chucks
• Lathe tools
• Centres
• Chuck guard
• Operating manual
7.1 Extras
We recommend the following for use with this machine:
• Chip tray
• Stand
• 125mm 4 jaw chuck
• Steady rest
• Follow rest
• Face plate
• 10mm lathe tool set
• 12mm lathe tool set
• Collet chuck holder
• 3-16mm collet chuck set
8. Installing the machine
When choosing the workpiece, bear the following points in mind:
• The device must be installed and operated in a dry and well-ventilated area
• Avoid locations near chip or dust generating machines
• Place in a vibration free area, at a distance from stamping machines, planing machines, etc..
• Use a suitable base (bearing capacity and evenness of the floor). Compensate possible unevenness with
suitable padding
• Leave sufficient space for the user
• Provide sufficient lighting
• Ensure a current supply
Ensure that no unauthorised personnel or children are in the danger area of the machine during operation.
The machine base must be conditioned so that no split oil or coolant can penetrate the floor.
8.1.1 Using a substructure
Ensure that the substructure is placed on even ground and that the machine is levelled exactly with a spirit level. If
not, there is danger that the lathe bed may become warped, making the machine unusable.
Attach the machine firmly to the substructure.
8.1.2 Using the machine with the substructure
When using an existing worktable or bench, also check the evenness of the installation surface. Use a spirit level for
levelling, ensure that the machine is firmly attached to the substructure. Only use a base suitable for the machine.
We do not recommend using unattached machines, as this will move during operation.
8.1.3 Installation drawings
9. Power Connection
Note: Connection of the lathe and all other electrical work may only be carried out by an authorised electrician
Before connecting the machine to the mains, make sure that the electrical values of the mains supply are the same as
those for the lathe’s electrical components. Use the wiring diagram for connecting the lathe to the mains supply.
We recommend that you connect the machine separately to other power consuming appliances, using a fused and
lockable connection.
If the turning direction is not correct, change the phase connection order at the terminal or plug.
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