SCHUNK ROTA TB2 470-185 User instructions

Translation of the original operating manual
Pneumatic front-end chuck
ROTA TB2 / ROTA TB2 LH
Assembly and Operating Manual
Superior Clamping and Gripping

Imprint
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04.00|0889132_ROTA TB2 / ROTA TB2 LH |en
Imprint
Copyright:
This manual is protected by copyright. The author is SCHUNK GmbH & Co. KG. All rights
reserved. Any reproduction, processing, distribution (making available to third parties),
translation or other usage - even excerpts - of the manual is especially prohibited and
requires our written approval.
Technical changes:
We reserve the right to make alterations for the purpose of technical improvement.
Document number: 0889132
Version: 04.00 |02/12/2020|en
© H.-D. SCHUNK GmbH & Co.
All rights reserved.
Dear Customer,
thank you for trusting our products and our family-owned company, the leading
technology supplier of robots and production machines.
Our team is always available to answer any questions on this product and other solutions.
Ask us questions and challenge us. We will find a solution!
Best regards,
Your SCHUNK team
H.-D. SCHUNK GmbH & Co.
Spanntechnik KG
Lothringer Str. 23
D-88512 Mengen
Tel. [phone]
Fax [phone]
[email protected]
schunk.com
Customer Management
Tel. [phone]
Fax [phone]
customercentermenge[email protected]k.com
Please read the operating manual in full and keep it close to the product.

Table of contents
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Table of contents
1
General .................................................................................................................... 5
1.1
About this manual .................................................................................................... 5
1.1.1
Presentation of Warning Labels.................................................................... 5
1.1.2
Applicable documents................................................................................... 6
1.1.3
Sizes............................................................................................................... 6
1.2
Warranty................................................................................................................... 6
1.3
Scope of delivery ...................................................................................................... 7
2
Basic safety notes .................................................................................................... 8
2.1
Intended use............................................................................................................. 8
2.2
Not intended use ...................................................................................................... 9
2.3
Constructional changes ............................................................................................ 9
2.4
Spare parts................................................................................................................ 9
2.5
Environmental and operating conditions............................................................... 10
2.6
Notes on safe operation......................................................................................... 10
2.6.1
Substantial modifications............................................................................ 15
2.7
Personnel qualification........................................................................................... 15
2.8
Personal protective equipment.............................................................................. 16
2.9
Transport ................................................................................................................ 16
2.10
Malfunctions........................................................................................................... 17
2.11
Disposal................................................................................................................... 17
2.12
Fundamental dangers............................................................................................. 17
2.12.1
Protection during handling and assembly .................................................. 18
2.12.2
Protection during commissioning and operation ....................................... 18
2.12.3
Protection against dangerous movements................................................. 18
2.12.4
Notes on particular risks ............................................................................. 19
2.13
2-jaw chuck............................................................................................................. 22
3
Technical data ......................................................................................................... 23
3.1
Chuck data .............................................................................................................. 23
3.2
Clamping force / speed diagrams........................................................................... 25
3.3
Calculations for clamping force and speed ............................................................ 30
3.3.1
Calculation of the required clamping force in case of a given rpm............ 30
3.3.2
Calculation example: required initial clamping force for a given speed .... 32
3.3.3
Calculation of the permissible speed in case of a given initial clamping
force ............................................................................................................ 34
3.4
Grades of Accuracy................................................................................................. 35
3.5
Permissible imbalance............................................................................................ 35

Table of contents
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4
Torques per screw ................................................................................................... 35
5
Assembly................................................................................................................. 36
5.1
Pre-assembly measures.......................................................................................... 36
5.2
Distributor ring ....................................................................................................... 37
5.2.1
Mounting with bracket ............................................................................... 38
5.2.2
Mounting with 2-part clamping ring (D.R.M.B.) ......................................... 40
5.3
Attachment of the ROTA TB2 chuck....................................................................... 42
5.4
Optional mechanical pressure monitor with inductive proximity switch ............. 43
5.5
Mechanical stroke monitoring with inductive proximity switches on dual stroke
chucks ..................................................................................................................... 44
6
Function .................................................................................................................. 46
6.1
Principle of Operation ............................................................................................ 46
6.2
Air transmission system ......................................................................................... 47
6.3
Pilot controlled check valve.................................................................................... 48
6.4
Faults, causes and solutions ................................................................................... 49
7
Commissioning and maintenance ............................................................................ 51
7.1
Commissioning ....................................................................................................... 51
7.2
Maintenance........................................................................................................... 52
7.2.1
Maintenance intervals ................................................................................ 55
7.2.2
Hardened Reversible Jaws and Soft Top Jaws ............................................ 56
8
Disassembly and assembly ...................................................................................... 57
8.1
Disassembly and cleaning....................................................................................... 57
8.2
Assembly................................................................................................................. 59
8.2.1
Mounting of optional mechanical pressure monitoring system ................ 61
9
Control of types TB2, TB2 LH.................................................................................... 62
10
TB2S, TB2S LH stationary power chucks ................................................................... 62
11
Power Chuck with extended and standard jaw stroke (LH) ...................................... 63
12
Spare parts.............................................................................................................. 64
13
Assembly drawings.................................................................................................. 67
14
Translation of the original declaration of incorporation ........................................... 69

General
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General
About this manual
This manual contains important information for a safe and
appropriate use of the product.
This manual is an integral part of the product and must be kept
accessible for the personnel at all times.
Before starting work, the personnel must have read and
understood this operating manual. Prerequisite for safe working is
the observance of all safety instructions in this manual.
Illustrations in this manual are provided for basic understanding
and may differ from the actual product design.
In addition to these instructions, the documents listed under
(1.1.2, Page 6) are applicable.
Presentation of Warning Labels
To make risks clear, the following signal words and symbols are
used for safety notes.
DANGER
Danger for persons!
Non-observance will inevitably cause irreversible injury or death.
WARNING
Dangers for persons!
Non-observance can lead to irreversible injury and even death.
CAUTION
Dangers for persons!
Non-observance can cause minor injuries.
1
1.1
1.1.1

General
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CAUTION
Material damage!
Information about avoiding material damage.
Applicable documents
•General terms of business*
•Catalog data sheet of the purchased product *
•Calculation of the jaw centrifugal forces, "Technology" chapter
in the lathe chuck catalog *
The documents marked with an asterisk (*) can be downloaded on
our homepage schunk.com
Sizes
This operating manual applies to the following sizes:
•ROTA TB2 470-185 / 470-185 LH
•ROTA TB2 520-191 LH
•ROTA TB2 600-275 / 600-275 LH
•ROTA TB2 630-175 LH
•ROTA TB2 685-325 / 685-325 LH
•ROTA TB2 850-375 / 850-375 LH
•ROTA TB2 1000-560 / 1000-560 LH
Warranty
The warranty period is 24 months after delivery date from factory
or 500 000 cycles*, if it is used as intended, under the following
conditions:
•Observe the applicable documents, (1.1.2, Page 6)
•Observe the ambient conditions and operating conditions.
•Observe the specified maintenance and lubrication intervals,
(7, Page 51)
Parts touching the workpiece and wear parts are not included in
the warranty.
* A cycle consists of a complete clamping process ("Open" and
"Close").
1.1.2
1.1.3
1.2

General
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Scope of delivery
1
Lathe chuck ROTA TB2 (LH)
6
T-nuts
2
Elbow connectors
2
Straight connectors
9 or 12
Fastening screws
1
Eye bolt
1
Operating manual
1.3

Basic safety notes
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Basic safety notes
Improper handling, assembly and maintenance of this product may
result in risk to persons and equipment if this operating manual is
not observed. Report any failures and damage immediately and
repair without delay to keep the extent of the damage to a
minimum and prevent compromising the safety of the product.
Only original SCHUNK spare parts may be used.
CONFIRMATION
We hereby confirm that the components comply with the
relevant basic and proven safety principles of Annex A and C of
ISO 13849-2, taking into account the requirements of the
documentation. The parameters, limitations, ambient conditions,
characteristic values, etc. for proper operation are defined in the
operating manual.
Intended use
This product is intended for clamping workpieces on machine tools
and other suitable technical devices.
•The product may only be used within the scope of its technical
data, (3, Page 23).
•The product is intended for industrial and industry-oriented
use.
•Appropriate use of the product includes compliance with all
instructions in this manual.
•The maximum RPM of the chuck and the required clamping
force must be determined by the user for the respective
clamping task based on the applicable standards and technical
specifications of the manufacturer.
(See also “Calculations for clamping force and RPM” in the
chapter “Technical data”). (3, Page 23)
2
2.1

Basic safety notes
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9
Not intended use
A not intended use of the product is for example:
•It is used as a press, a punch, a toolholder, a load-handling
device or as lifting equipment.
•the product is used for unintended machines or workpieces.
•the technical data is exceeded when using the product.
(3, Page 23)
•if workpieces are not clamped properly, paying particular
attention to the clamping forces specified by the manufacturer.
•if it is used in working environments that are not permissible.
•if the product is operated without a protective cover.
Constructional changes
Implementation of structural changes
By conversions, changes, and reworking, e.g. additional threads,
holes, or safety devices can impair the functioning or safety of the
product or damage it.
•Structural changes should only be made with the written
approval of SCHUNK.
Spare parts
Use of unauthorized spare parts
Using unauthorized spare parts can endanger personnel and
damage the product or cause it to malfunction.
•Use only original spare parts or spares authorized by SCHUNK.
2.2
2.3
2.4

Basic safety notes
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Environmental and operating conditions
Required ambient conditions and operating conditions
Incorrect ambient and operating conditions can make the product
unsafe, leading to the risk of serious injuries, considerable material
damage and/or a significant reduction to the product's life span.
•Make sure that the product is used only in the context of its
defined application parameters, (3, Page 23).
•Make sure that the product is a sufficient size for the
application.
•Only use high-quality cooling emulsions with anti-corrosive
additives during processing.
Clamping force measurement
Depending on the operating conditions, the function and clamping
force must be checked after a certain period of operation
(7.2.1, Page 55).
With the smallest possible actuating pressure (hydraulic cylinder),
the base jaws should move evenly. This method only provides a
limited indication and is not a substitute for measuring the
clamping force.
If the clamping force has dropped too much or if the base jaws and
piston no longer move properly, the chuck must be disassembled,
cleaned, and relubricated (7, Page 51).
Notes on safe operation
•The machine spindle may only be started up when clamping
pressure has built up in the cylinder and clamping has followed
in the permitted work area.
•Unclamping may only be possible when the machine spindle
has come to a standstill.
•If the clamping energy fails, the workpiece must remain firmly
clamped until the spindle is shut down and the workpiece is
secured.
•The technical safety requirements in the respective operating
instructions must be observed exactly.
2.5
2.6