Festo DHTG-A Series Einrichtungshandbuch

Repair

instructions (en)

Rotary indexing table

DHTG-…-A

7DHTGb_en

2 / 46 Festo 7DHTGb_en

Imprint

Version:

7DHTGb_en (11.2011)

©Festo AG & Co. KG

P.O. Box

D-73726 Esslingen

Editorial team:

SC-S

Tel.:

+49 (0) 711/347-0

E-mail:

[email protected]

Internet:

http://www.festo.com

The reproduction, distribution and

utilisation of this document as well as

the communication of its contents to

others without explicit authorisation

is prohibited. Offenders will be liable

particular the right to le patent,

utility model or registered design ap-

plications.

All product designations and brand

names used are the property of the

owners and not explicitly identied

as such.

All technical data subject to change

according to technical updates.

3 / 46Festo 7DHTGb_en

Foreword

These repair instructions are valid for the rotary indexing tables listed on the

title page to the exclusion of any liability claims.

Deviations compared to the descriptions in these repair instructions may arise

depending on the design and/or modication status of the rotary indexing

tables. The user must check this prior to carrying out the repair and take the

deviations into consideration if necessary.

These repair instructions have been prepared with care.

Festo AG & Co. KG does not, however, accept liability for any errors in these

repair instructions or their consequences. Likewise, no liability is accepted for

direct or consequential damage resulting from improper use of the products.

More detailed information on this can be found in chapter 7 “Liability”.

The relevant regulations on occupational safety, safety engineering and interfer-

ence suppression as well as the stipulations contained in these repair instruc-

tions must be observed when working on the products.

4 / 46 Festo 7DHTGb_en

Table of contents

1 Important information 5

1.1 About these repair instructions 5

1.2 Pictograms used in these repair instructions 5

1.3 General safety information 6

2 General product description 6

2.1 Functional description 6

2.2 Types and part numbers 7

2.3 Mounting directions 7

3 Component overview 8

3.1 DHTG-65-…-A 8

3.2 DHTG-90-…-A 10

3.3 DHTG-140-…-A 12

3.4 DHTG-220-…-A 14

4 Repair steps 16

4.1 Dismantling the rotary indexing table 16

4.1.1 Removing the plate 16

4.1.2 Dismantling the plate (DHTG-65 and DHTG-90) 17

4.1.3 Dismantling the plate (DHTG-140) 19

4.1.4 Dismantling the plate (DHTG-220) 21

4.1.5 Removing the gear racks 23

4.1.6 Removing the bolts 28

4.1.7 Dismantling the bolts 28

4.2 Assembling the rotary indexing table 30

4.2.1 Assembling the bolts 30

4.2.2 Installing the bolts 32

4.2.3 Installing the gear racks 33

4.2.4 Assembling the plate (DHTG-65 and DHTG-90) 38

4.2.5 Assembling the plate (DHTG-140) 39

4.2.6 Assembling the plate (DHTG-220) 40

4.2.7 Installing the plate 42

5 Maintenance 44

5.1 Cleaning and lubricating the rotary indexing table 44

5.2 Inspection interval for the shock absorber 44

6 Tools 45

6.1 Standard tools 45

7 Liability 45

5 / 46Festo 7DHTGb_en

1 Important information

1.1 About these repair instructions

This document contains important

information about the professional

repair of the rotary indexing table of

the type DHTG-…-A.

The rotary indexing table DHTG-…-A is

fully repairable. The costs of carrying

out a repair must, however, be consid-

ered in the case of larger defects.

Before carrying out a repair, the

relevant section in these instructions

must be read in full and followed

consistently.

For reasons of clarity, these repair

instructions do not contain complete,

detailed information. The following

documents should therefore also

be available when repairing a rotary

indexing table:

• Operating instructions

Contain information about the

function, application, installation,

commissioning, operation, care

and maintenance, etc. Can be

found on the Festo website

(www.Festo.com).

• Spare parts documentation

Contains an overview of the spare

and wearing parts as well as infor-

mation on their installation. Can

be found in the online spare parts

catalogue on the Festo website

(spareparts.Festo.com).

• Assembly aids

Contain an overview of available

assembly aids such as lubricat-

ing greases, locking agents,

maintenance tools, etc. (aids for

assembly and maintenance). Can

be found in the online spare parts

catalogue on the Festo website

(www.Festo.com).

1.2 Pictograms used in these repair instructions

Warning

This sign indicates a dangerous situation for persons and/or the product. Failure to observe this warning can result in

injury to persons and/or damage to the device.

Note

This sign provides important tips and information that can make your work easier.

Environment

This sign provides information on the steps required for environmentally friendly use of materials and equipment,

as well as the guidelines and regulations that may need to be observed.

Documents

This sign contains references to other sections or documents containing additional information.

6 / 46 Festo 7DHTGb_en

1.3 General safety information

Warning

The rotary indexing table must only be repaired by authorised and trained persons in accordance with the specica-

tions in the technical documentation and using genuine spare parts.

Installation and repair by unauthorised and untrained persons, repairs using non-genuine spare parts as well as with-

out the technical documentation required for installation and/or repair are dangerous and therefore not permitted.

Repairs must only be carried out in conjunction with these repair instructions as well as the respective operating

instructions for the device.

Note

Instead of carrying out the repair yourself, your local Festo sales ofce offers the option of having the repair carried

out by Festo.

Environment

Components and equipment replaced as part of a repair must be disposed of in accordance with the locally valid envi-

ronmental protection regulations.

2 General product description

2.1 Functional description

The DHTG-…-A is a rotary indexing table based on the rack and pinion principle for power transmission and forced lock-

ing. The linear motion of two pneumatically actuated rack pistons is converted into swivel motion by a pinion. A second

pair of pistons controls meshing of the pinion in the table gearing and locking of the holding position.

The rotary indexing table DHTG is intended to be used to rotate the effective load by a dened rotation angle into a hold-

ing position.

11Gear rack

2Index plate

3Pinion

4Clamping plate

5Bolt for locking the index plate

7 / 46Festo 7DHTGb_en

2.2 Types and part numbers

Type Part number

DHTG-65-2-A 548076

DHTG-65-3-A 555448

DHTG-65-4-A 548077

DHTG-65-6-A 548078

DHTG-65-8-A 548079

DHTG-65-12-A 548080

DHTG-65-24-A 548081

DHTG-90-2-A 548082

DHTG-90-3-A 555449

DHTG-90-4-A 548083

DHTG-90-6-A 548084

DHTG-90-8-A 548085

DHTG-90-12-A 548086

DHTG-90-24-A 548087

DHTG-140-3-A 555450

DHTG-140-4-A 548088

DHTG-140-6-A 548089

DHTG-140-8-A 548090

DHTG-140-12-A 548091

DHTG-140-24-A 548092

DHTG-220-3-A 555451

DHTG-220-4-A 548093

DHTG-220-6-A 548094

DHTG-220-8-A 548095

DHTG-220-12-A 548096

DHTG-220-24-A 548097

The complete overview of features, accessories, type codes,

technical data and dimensions for the rotary indexing tables

DHTG-… -A can be found in the product catalogue or on the

Festo website (www.Festo.com).

2.3 Mounting directions

This diagram provides an overview of the mounting directions for the rotary indexing table.

O = Top

U = Underneath

R = Right

L = Left

V = Front

H = Rear

8 / 46 Festo 7DHTGb_en

33 34

47 48 49 52 53 54

50 51

3 Component overview

3.1 DHTG-65-…-A

This diagram is intended only to provide an overview of the individual components. To order spare and wearing parts, please use the

online spare parts catalogue on the Festo website (spareparts.Festo.com).

9 / 46Festo 7DHTGb_en

Item Designation Specication Note

1 Flat head screw DIN 921-M3×6-5.8 Tightening torque 0.6 Nm

2 Clamping ring

3 Plate seal

4 Rail

5 Rail

6 Guide segment

7 Bearing module

8 O-ring 14×2 NBR

9 Plate

10 Index plate

11 Cylindrical dowel pin DIN 6325-6M×10

12 Countersunk screw DIN 7991-M4×8 Tightening torque 2 Nm

13 Retaining ring DIN 472-18×1

14 Cover

15 O-ring 11.5×1.5 NBR 1

16 Wiper seal

17 O-ring 2.2×1

18 Stop pin

19 Compression spring

20 Lock bolt

21 Bolt module

22 Piston seal

23 Housing

24 Pinion

25 Clamping plate

26 Cover

27 Retaining ring DIN 471-18×1.2

28 Flange

29 Cylindrical dowel pin DIN 6325-4M6×12

30 Socket head screw DIN 7984-M4×8 Tightening torque 1.2 Nm

31 Countersunk screw DIN 7991-M5×16 Tightening torque 1.5 Nm

32 Stop plate

33 Sealing ring

34 Blanking plug Tightening torque 0.5 Nm

35 Blanking plug module

36 Spacing bolt

37 Piston seal

38 Gear rack

49 O-ring 24.8×1.5

40 O-ring 31.5

41 Shock absorber

42 Retaining ring DIN 472-12×1

43 O-ring 8×1.6

44 Buffer

45 Compression spring D-055

46 Impact plate

47 Socket head screw DIN 912-M4×16 Tightening torque 2.9 Nm

48 Stop screw M8×12

49 Clamping component Tightening torque 0.8 Nm

50 Sealing ring

51 Blanking plug Tightening torque 1.5 Nm

52 Blanking plug module

53 Stop screw M8×1×…

54 Hollow bolt Tightening torque 1.5 Nm

10 / 46 Festo 7DHTGb_en

3.2 DHTG-90-…-A

This diagram is intended only to provide an overview of the individual components. To order spare and wearing parts, please use the

online spare parts catalogue on the Festo website (spareparts.Festo.com).

33 34

48 49 50 51 52

54 55

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