CHESTER DB7VS Manual de usuario

DB7VS

LATHE

Manual

Chester UK Lt

Clwyd Close

Hawarden Industrial Par

Hawarden

Chester CH5

3PZ

Tel: 01244

531631

sales@chesterma

etools.com

www.

esterma

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 Safety ……………………………………………………………................................................................... 3

1.1 Proper use ………………………………………………………………………………………………….. 3

1.2 Possible dangers caused by the lathe …………………………………………………………………… 4

1.3 Individual protection gear ………………………………………………………………………………….. 4

1.4 For your own safety during operation …………………………………………………………………….. 4

1.4.1 Disconnecting the lathe and making it safe ……………………………………………………….. 5

2 Unpacking and connecting ……………………………………………………………………………………... 6

2.1 Extent of supply ……………………………………………………………………………………………... 6

2.2 Installation and assembly …………………………………………......................................................... 6

2.2.1 Requirements of the installation site ………………………………………………………………... 6

2.2.2 Load suspension point ………………………………………........................................................ 6

2.2.3 Fixing …………………………………………………………………………………………………... 6

2.3 First Use ……………………………………………………………………………………………………… 7

2.3.1 Cleaning and greasing ……………………………………………………………………………….. 7

2.3.2 Optional accessories …………………………………………....................................................... 8

3 Operation …………………………………………………………………………………………………………. 9

3.1 Safety …………………………………………………………………………………………………………. 9

3.2 Control and indicating elements ………………………………………………………………………….... 9

3.3 Clamping the tool …………………………………………………………………………………………… 10

3.4 Clamping a workpiece into the lathe chuck ………………………...................................................... 11

3.4.1 Replacing the clamping jaws on the lathe chuck …………………………………………………. 12

3.4.2 Head spindle seat ……………………………………………………………………………………. 12

3.5 Switching ON/OFF ………………………………………………........................................................... 12

3.5.1 Changing-over switch ………………………………………........................................................ 13

3.6 Adjusting the speed ………………………………………………………………………………………… 13

3.6.1 Changing the speed range ………………………………………………………………………….. 13

3.7 Turning short tapers with the top slide ……………………………...................................................... 13

3.8 Turing between centres ……………………………………………........................................................13

3.9 Adjusting feeds and threads pitches ………………………………...................................................... 14

3.9.1 Switching on the feed …………………………………………………………………………… ..… 14

3.10 General working notes ……………………………………………………………………………………. 15

3.10.1 Coolant ……………………………………………………………………………………………... 15

4 Maintenance ……………………………………………………………………………………………………… 16

4.1 Safety ………………………………………………………………………………………………………… 16

4.2 Inspection and maintenance ………………………………………....................................................... 16

4.3 Spare parts drawing drive …………………………………………........................................................ 17

4.4 Spare parts drawing top slide and compound slide ……………………………………………………... 18

4.5 Spare parts drawing lathe slide ……………………………………………………………………………. 19

4.6 Spare parts drawing engine bed …………………………………………………………………………... 19

4.7 Spare parts drawing tailstock ………………………………………………………………………………. 20

4.8 Spare parts list …………………………………………………………………………………………… 21-23

5 Technical data……………………………………………………………………………………………………. 24

1 Safety

This part of the operating manual:

• Explains the meaning and use of the warning references contained in the operating manual

• Explains how to use the lathe properly

• Highlights the dangers that might arise for you or others if these instructions are not obeyed

• Tells you how to avoid dangers

In addition to this manual, please observe:

• Applicable laws and regulations

• Legal regulations for accident prevention

• The prohibition, warning, and mandatory signs as well as the warning notes on the lathe

Always keep this document close to the lathe for future reference.

1.1 Proper use

Warning!

In the event of improper use, the lathe

• Will endanger personnel

• Will endanger the machine and other material property of the operator

• May affect proper operation of the machine

The machine is designed and manufactured to be used in environments where there is no potential danger of

explosion.

The lathe is designed and manufactured for straight turning and facing round or regularly shaped three, six, or twelve

square workpieces in cold metal, castings and plastics or similar materials that do not constitute a health hazard or do

not create dust, such as wood, Teflon, etc..

The lathe must only be installed and operated in a dry and well-ventilated place.

Improper Use.

The lathe must only be used in any other way than described above, modified without our authorization, or operated

with different process data, then the lathe is being used improperly.

We do not take any liability for damage caused by improper use.

We would like to stress that any modifications to the construction, or technical or technological modifications that have

not been authorized by us will also render the guarantee null and void.

It is also part of proper use that

• The maximum values for the lathe are complied with

• The operating manual is observed

• Inspection and maintenance instructions are observed

In order to achieve an optimum cutting performance, it is essential to choose the right turning tool, feed tool, feed, tool

pressure, cutting speed, and coolant.

Warning!

It is forbidden to make any modifications or alterations to the operating values of the lathe.

1.2 Possible dangers caused by the lathe

The lathe has been designed and built using the latest technological advances, nonetheless, there remains a residual

risk since the machine operates with

• High revolutions

• Rotating parts

• Electrical voltage and currents

We have used construction resources and safety techniques to the minimize the risk to personnel resulting from these

hazards.

If the lathe is used and maintained by personnel who are not duly qualified, there may be a risk resulting from

incorrect operation or unsuitable maintenance.

All personnel involved in operation and maintenance must

• Be duly qualified

• Follow this operating manual

In the event of improper use

• There may be a risk to personnel

• There may be a risk to the machine, and other material property

• Correct functioning of the lathe may be affected

Remove the mains plug of the machine whenever you change gears, speed range, or clean the lathe.

There are additional requirements for work on the following machine parts:

• Electrical components or equipment. This work must only be carried out by a qualified electrician or person

working under the instructions and supervision of a qualified technician.

Warning!

Remove the protective cover of the headstock only after the mains plug has been removed.

1.3 Individual protection gear

For certain work individual protection gear is required.

Protect your face and eyes; during all work and especially work during which your face and eyes are exposed to

hazards. A safety helmet with guard should be worn.

Use protective gloves when handling pieces with sharp edges.

Wear safety shoes when transporting the lathe.

Use ear protection if the noise level (inmission) in the workpiece exceeds 80 dB(A).

Before starting work, make sure that the appropriate individual protection gear is available in the workplace.

1.4 For your own safety during operation

Before activating the lathe, ensure that this will not:

• Endanger other people

• Cause damage to equipment

Avoid unsafe working practices

• Make sure that your work does not endanger anyone

• Clamp the workpiece tightly before switching the lathe on

• Mind the maximum chuck opening

• Use protective goggles

• Do not removing turning chips by hand. To remove chips, use a chip hook and or a handbrush

• Clamp the turning tool at the correct height and with the least possible overhang

• Turn off the lathe before measuring the workpiece

• The instructions in this manual must be observed during assembly, handling, maintenance, and repair

• Do not work on the lathe if your concentration is reduced, for example, because you are taking medication

• Observe the rules for preventing accidents

• Stay at the lathe until all rotating parts have come to a halt

• Use the prescribed protection gear. Make sure to wear a well-fitting work suit, and if necessary, a hairnet.

1.4.1 Disconnecting the lathe and making it safe

Pull the mains plug before beginning any maintenance or repair work. All machine components and hazardous

voltages and movements must have been disconnected.

2 Unpacking and connecting

The lathes come preassembled. When the lathe is delivered, check immediately that it has not been damaged during

shipping, and that all components are included. Also, check that no fastenings have come loose.

2.1 Extent of supply

Compare the parts supplied with the information on the packing list.

2.2 Installation and assembly

2.2.1 Requirements of the installation site

Operation, maintenance and repair in the work area must not be hindered.

The mains plug of the lathe must be freely accessible.

2.2.2 Load suspension point

Proceed extremely carefully when lifting, assembling and mounting the machine.

Take notice of the weight of the lathe when assembling. The weight amounts to 60kg.

Wear safety shoes

• Fasten the load suspension gear around the lathe bed

• Clamp the tailstock firmly before transporting the lathe

• Make sure that no add-on pieces or varnished parts are endangered due to the load suspension

2.2.3 Fixing

• Control the foundation of the lathe using a spirit level for horizontal orientation

• Make sure that the means of transport and the foundation on which the lathe is being placed can withstand

the load

• Place the lathe onto the provided foundation

• Screw the machine > Fix the lathe with the provided bore holes (2 pieces) together with the chip pan and the

provided foundation

Insufficient rigidity of the foundation leads to the superposition of vibrations between the lathe and foundation (natural

frequency of components). Insufficient rigidity of the entire lathe assembly also rapidly causes the lathe to reach

critical speeds, with unpleasant vibrations, leading to bad turning results.

2.3 First use

2.3.1 Cleaning and greasing

Cleaning the machine

Remove the anticorrosive agent applied to the lathe for transport and storage purposes. We recommend the use of

stove distillate.

Do not use any solvents, thinners, or other cleaning agents which could corrode the varnish on the lathe. Follow the

specifications and indications of the manufacturer of the cleaning agent.

Lubricate all bright machine parts with non-corrosive lubricating oil.

Grease the lathe using the lubrication chart (under “Inspection and maintainance”).

Control the function of movable and fixed parts

Check smooth running of all spindles.

Ensure the fastening screws of the lathe chuck are firmly tightened.

Clamp a workpiece into the lathe chuck, or bring the clamping jaws of the lathe chuck completely together before the

switch the lathe on.

Make sure that the current supply is working correctly

Connect the electrical supply cable (safety plug with earthing).

Warning!

Do not stand directly in front of the lathe chuck when you turn the machine on for the first time.

2.3.2 Optional accessories

4 jaw chuck 100mm

Flange for 4-jaw chuck

Face plate

Follow rest

Steady rest

Set of collet chucks, 1-16mm, 15 pieces (ER25)

ER25 Toolholder

Quick change tool holder AA

Single toolholder WAAD

Set of lathe tools, 10mm, 7 pieces

Set of tipped tools, 8mm, 11 pieces

3 Operation

3.1 Safety

Use the lathe only under the following conditions:

• The machine is in proper working order

• The lathe is used as prescribed

• The operating manual is followed

All abnormalities should be eliminated immediately. Stop the lathe immediately in the event of any abnormality in

operation and make sure it cannot be started up accidentally or without authorization.

3.2 Control and indicating elements

Warning!

Please be aware that the machine should only be run at low revs and high loads for a limited amount of time, then run

and unloaded at full speed to allow the motor to cool.

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