Festo DLGF Manual de usuario

Original instructions

1 Further applicable documents

All available documents for the product èwww.festo.com/pk.

The DLGF linear drive is designated as product or drive in these operating instruc

tions.

2 Safety

2.1 General safety information

– Take into consideration the ambient conditions at the location of use.

– Only use the product in original status without unauthorised modifications.

– Observe labelling on the product.

– Observe further applicable documents.

– Store the product in a cool, dry, UVprotected and corrosionprotected environ

ment. Ensure that storage times are kept to a minimum.

– Prior to mounting, installation and maintenance work: Switch off compressed

air supply and secure it from being switched back on.

– Observe tightening torques. Unless otherwise specified, the tolerance is

±20%.

2.2 Intended use

The product is intended for the spacesaving transport of masses.

The product is approved for rotor/slide operating mode.

Fig. 1

2.3 Foreseeable misuse

Mechanical movement of rotor/slide at high speed creates a vacuum in the piston

chamber. This vacuum can pull the sealing band into the piston chamber. This res

ults in severe leakage and unacceptable levels of acceleration (e.g. in vertical

mounting position).

Only move rotor/slide mechanically at low speeds.

2.4 Qualification of specialized personnel

Installation, commissioning, maintenance and disassembly should only be con

ducted by qualified personnel.

The specialized personnel must be familiar with the installation and operation of

electrical and pneumatic control systems.

3 Further information

– Accessories èwww.festo.com/catalogue.

– Spare parts èwww.festo.com/spareparts.

4 Service

Contact your regional Festo contact person if you have technical questions

èwww.festo.com.

5 Product overview

5.1 Function

When the pneumatic ports are pressurized alternately, the piston moves back

wards and forwards in the profile barrel. The rigid connection to the piston causes

the rotor/slide to move too. A sealing band spans the slot required in the profile

barrel.

5.2 Layout

DLGF-G

1Bores for direct mounting in the

cover

2Pneumatic connection

3Slide

4Mounting interface for connection

of working load

5Bores for direct/profile mounting

in the profile barrel

6Sealing band

7Groove for

Proximity sensor

Fig. 2

DLGF-KF

1Bores for direct mounting in the

cover

2Pneumatic connection

3Slide (mounted on rotor)

4Mounting thread for payload

5Bores for direct/profile mounting

in the profile barrel

6Guide rail

7Slot for proximity sensor

Fig. 3

6 Transport

NOTICE!

Unexpected movement of components. The rotor/slide is unbraked and can move

freely.

• Secure rotor/slide during transport.

– Take product weight into account è13 Technical data.

–Maintain support clearance£300mm when attaching transportation aids.

7 Assembly

7.1 Preparation

– Avoid damage and contamination to the sealing band.

– Do not modify the screws and threaded pins.

Exception: Immediate requirement for change in this instruction manual.

– Place the product in such a way that the control sections can be reached

(e.g.adjusting screws).

– Install product without torsional stresses.

– Fasten product to a mounting surface with flatness of 0.05% of the stroke

length, but max. 0.5mm.

– For gantry applications, attention must also be paid to parallel alignment or

product heights in alignment of the products. For further information please

contact your local Festo Service centre.

– If needed: Select mounting components or accessories

èwww.festo.com/catalogue.

To avoid collisions, attach the mounting components outside the positioning

range.

Linear drive

DLGF

8069099

201703

[8069101]

Instruction manual  Operation

Festo AG & Co. KG

Ruiter Straße 82

73734 Esslingen

Deutschland

+49 711 3470

www.festo.com

7.2 Direct mounting

Fig. 4

1. Attach drive paying attention to the minimum number of screws used in pairs

(in this example: 2 pairs of screws):

– On the bores in the profile or cover (with DLGF)

– On the bores in the cover (with DLGF...W)

Maintain a maximum support clearance of 300mm at all times. With

DLGF...W where necessary provide external support (e.g. from the machine

frame).

2. Tighten screws uniformly to the following tightening torque.

DLGF-... 20 25 32 40

Minimum number of pairs of screws depending on stroke

50…150 [mm] 2 2 2 2

200 [mm] 2 2 2 3

250 [mm] 2 2 3 3

300 [mm] 3 3 3 3

350…450 [mm] 3 3 3 4

500…600 [mm] 4 4 4 4

650…750 [mm] 4 4 4 5

800…1000 [mm] 5 5 5 5

Screw size and tightening torque

Bolt M4 M5 M6 M6

Tightening torque [Nm] 2.5 ± 10% 5.8 ± 20% 7.7 ± 20% 8.2 ± 10%

Tab. 1

7.3 Attachment

Fig. 5

NOTICE!

A warped attachment component bends the slide and shortens the service life of

the guide.

• Use an attachment component with an even surface.

Flatness with recirculating ball bearing: t = 0.01mm

– Position the payload in such a way, that the breakdown torque (parallel to the

axis of motion) and lever arm remains as low as possible.

– Avoid collisions of tool and payload with attachments.

– For attachment components with their own guide:

Adjust the guides of the tool and drive so that they are exactly parallel, or use a

connection that permits tolerance compensation. In this way, the guide is not

overloaded.

On DLGF-G in basic version:

• Attach mounting element (e.g. moment compensator DARDL8) to slide with

screws.

Fig. 6

DLGF-G-... 20 25 32 40

Screw S M4 M4 M4 M4

Tightening torque M [Nm] 3 ± 10% 3 ± 10% 3 ,4± 10% 3 ,4± 10%

Tab. 2

On DLGF-KF with recirculating ball bearing:

• Fasten the attachment to the slide with screws and centring elements. Pay

attention to the maximum screwin depth D and the tightening torque.

Attachment of mounting component from above/front:

Fig. 7

DLGF-KF-... 20 25 32 40

Mounting from above

Screw S1M4 M5 M5 M6

Max. screwin depth D1[mm] 8.8 9.8 10.3 10.3

Tightening torque M1[Nm] 2.2 4.5 4.5 7.5

Centring H7 [mm] Æ 7 Æ 9 Æ 9 Æ 12

Mounting from front

Screw S2M3 M4 M3 M4 M4 M5 M4 M6

Max. screwin depth D2[mm] 7 7 7 9 7.5 10 8 10

Tightening torque M2[Nm] 1 2.2 1 2.2 2.2 4.5 2.2 7.5

Tab. 3

7.4 Mounting accessories

Position scanning with proximity sensors:

– Press proximity switch into the grooves 7 è5.2 Layout.

– Avoid external influences from magnetic or ferritic parts in the vicinity of the

proximity sensors (maintain a minimum distance of 10mm).

– To avoid contamination, use groove covers on all unused grooves

èwww.festo.com/catalogue.

To set the speed:

– Use oneway flow control valves in the supply ports.

To secure the payload from dropping when a pressure failure occurs:

– Use check valves.

8 Pneumatic installation

1Supply port for movement to the

right

2Supply port for movement to the

left

3Subbase

4Sealing ring

Fig. 8

1. Select suitable supply ports.

The compressed air supply can be onesided or at both ends.

In addition to the supply ports provided exfactory, a base plate can provide

a port 3 (èenlarged image). When a base plate is used, attachment must

be made using the cover bores. This is the only way to seal the Orings with

enough contact force.

2. Connect hoses to supply ports.

9 Start-up

Preparation

NOTICE!

Unexpected movement of components.

• Keep foreign objects out of the positioning range.

• Initiate startup at low speed.

– Slowly supply complete system with air. For slow startup pressurisation, use

onoff valve HEL.

With medium or large payloads and/or at high speeds:

– Use sufficiently large arrester fixtures.

Without the use of external arrester fixtures, the product can contend with the

maximum speeds and payloads defined in catalogue details or in technical

data.

Processing

NOTICE!

Risk of collision by payloads that protrude through the rotor/slide.

• Only turn adjusting screws while the rotor/slide is stationary.

Fig. 9

1. First of all, almost close the oneway control valves on both sides com

pletely, then unscrew them one complete turn.

2. Initially exhaust drive simultaneously at both sides.

ÄThis causes the rotor/slide to move slightly to a point of balance

3. Then exhaust the drive on just one side.

ÄThis causes the rotor/slide to move into an end position.

4. Start the test run.

5. If needed: Correct speed at the restrictor check valves. The rotor/slide

should reach the end positions without striking them harshly or recoiling.

10 Maintenance

10.1 Cleaning

Do not clean the guide elements (e.g. guide rails).

• Clean the outside of the product with a soft cloth. Do not use aggressive

cleaning agents.

10.2 Lubrication

NOTICE!

Lubrication of the basic version of the shaft is not necessary.

Lubrication of recirculating ball bearing (DLGF-KF)

Fig. 10

1. Calculate load comparison factorfv with the help of the formula for com

bined loads è13 Technical data.

2. Read off lube interval Sint èFig.11.

3. Oil or grease the guide at all relubrication openings èFig.10.

When pressing in grease: Move slide slowly to and fro by hand.

– Accessories and permitted lubricant èMaintenance accessories.

– Amount of lubricantèTab. 4.

Fig. 11

NOTICE!

The lubrication interval Sint is dependent on the load acting on the product.

Load factors include e.g.:

• Dusty and dirty environment

•Nominal stroke > 2000mm or < 300mm

•Speed > 2m/s

•Ambient temperature > +40°C

•Service age of product > 3years

• Travel profile matches triangular operation (frequent acceleration and braking)

If one of these factors applies:

• Halve lubrication interval Sint.

If several factors apply at the same time:

• Divide service interval Sint by four.

Size 20 25 32 40

Lubricant quantity at each

lubricating point

[g] 0.3 0.5 1.7 1.9

Tab. 4

Maintenance accessories

Designation Part number1) Type1)

DLGFKF20/25

Oil gun 8041022 AZTPSL

Metering needle kit 8075522 AZTNDSG

Metering needle for DLGF20: Green,

angled 45°

Metering needle for DLGF25: Olive,

angled 45°

Cartridge 8073523 AZLGH1C10,

(Elkalub VP 922, ChemieTechnik Co.,

Vöhringen)

DLGFKF32/40

Grease gun with needlepointed

nozzle

647958 LUB1

Lubrication adapter, angled output 8073388 LUB1TRW

Lubricating grease 8073786 ELKALUB VP 922,

(ChemieTechnik, Vöhringen)

1) Spare parts catalogue ➔www.festo.com/spareparts

Tab. 5

11 Malfunctions

11.1 Fault clearance

Fault description Cause Remedy

Irregular movement of slide Oneway flow control valve not

installed correctly

Choke with exhaust air as far as

possible (not with supply air).

Malfunctions in position sens

ing

Ferritic parts in the vicinity of

the proximity switch

Use parts of nonmagnetic

materials or maintain minimum

distances

è7.4 Mounting accessories.

Linear actuator integrated in a

distorted manner

Fasten the linear actuator to a

flat base.

Seal worn Replace wearing parts:

– Self repair with a set of

wearing parts

– Repair at Festo

Heavy leakage

Sealing band pressed/sucked

For unpressurized linear drive:

– Loosen the tubing connec

tion and move the slide

twice by hand through the

entire stroke (if necessary,

move fixed stops into the

end position).

– Avoid low pressure in the

piston chamber (e.g. only

move the depressurised

slide slowly).

Lack of air volume – Increase connection cross

section.

– Place volume upstream.

Linear actuator does not

achieve the desired speed.

High friction or counteracting

force

Observe limit values.

Tab. 6

11.2 Repair

Send product to the Festo repair service for repair.

12 Recycling

ENVIRONMENT!

Dispose of the packaging and product according to the valid provisions of envir

onmentally sound recycling èwww.festo.com/sp.

13 Technical data

Size 20 25 32 40

Design Rodless drive

Mode of operation Doubleacting

Cushioning Pneumatic cushioning,

Selfadjusting on both sides

Pneumatic connection M5 G1/8 G1/8 G1/4

Speed [m/s] 0.07…1.5

Repetition accuracy [mm] ±0.05

Mounting position Optional

Operating pressure [bar] 2…8 1.5…8

Operating medium Compressed air acc. to ISO 85731:2010 [7::]

Size 20 25 32 40

Notes on the operating/pilot

medium

Lubricated operation possible (in which case lubricated

operation will always be required)

Ambient temperature [°C] 0…60

Theoretical force at 6 bar [N] 188 295 483 754

Weight DLGF‑G

Basic weight with 0mm

stroke

[g] 590 957 1703 3234

Additional weight per 10mm

stroke

[g] 28.2 35.3 54.7 80.6

Weight DLGF‑KF

Basic weight with 0mm

stroke

[g] 1015 1640 2829 5585

Additional weight per 10mm

stroke

[g] 35.5 45.5 69.4 105.5

Materials

Cover, housing, rotor/slide Aluminium

Seals NBR, TPEU (PU)

Guide band, guide (DLGF‑KF),

scraper

POM

Sleeve, stop Steel

Tab. 7

Size 20 25 32 40

Loading characteristics, DLGF‑G

Formula for combined loads:

Permitted forces and torques, DLGF‑G

+Fzmax [N] 54 95 138 456

Fzmax [N] 98 164 276 662

Mxmax [Nm] 0.6 1.1 1.8 7.7

Mymax [Nm] 2.2 4.5 7.6 37.6

Mzmax [Nm] 0.7 1.4 2.9 11.2

Characteristic load values, DLGF‑KF

Formula for combined loads (load comparison factor):

Permitted forces and torques, DLGFKF

Fymax [N] 600 1000 1300 1700

+Fzmax [N] 400 700 950 1150

Fzmax [N] 700 1200 1600 2000

Mxmax [Nm] 5.4 12.3 30 54

Mymax [Nm] 15 30 50 90

Mzmax [Nm] 15 30 50 90

Tab. 8

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