SCHUNK ROTA NCX User instructions

Translation of Original Operating Manual
Power chucks
ROTA NCX
Assembly and Operating Manual
Superior Clamping and Gripping

Imprint
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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: 0889148
Version: 03.00 |05/11/2019|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

Table of contents
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3
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 ...................................................................................................... 6
2
Basic safety notes .................................................................................................... 7
2.1
Intended use............................................................................................................. 7
2.2
Not intended use ...................................................................................................... 7
2.3
Constructional changes ............................................................................................ 8
2.4
Spare parts................................................................................................................ 8
2.5
Chuck jaws ................................................................................................................ 8
2.6
Environmental and operating conditions................................................................. 9
2.7
Personnel qualification........................................................................................... 10
2.8
Personal protective equipment.............................................................................. 11
2.9
Notes on safe operation......................................................................................... 11
2.10
Transport ................................................................................................................ 12
2.11
Malfunctions........................................................................................................... 12
2.12
Disposal................................................................................................................... 12
2.13
Fundamental dangers............................................................................................. 13
2.13.1
Protection during handling and assembly .................................................. 13
2.13.2
Protection during commissioning and operation ....................................... 14
2.13.3
Protection against dangerous movements................................................. 14
2.13.4
Notes on particular risks ............................................................................. 15
3
Technical data ......................................................................................................... 19
3.1
Chuck data .............................................................................................................. 19
3.2
Clamping force / speed diagrams........................................................................... 20
3.3
Calculations for clamping force and speed ............................................................ 22
3.3.1
Calculation of the required clamping force in case of a given rpm............ 22
3.3.2
Calculation example: required initial clamping force for a given speed .... 25
3.3.3
Calculation of the permissible speed in case of a given initial clamping
force ............................................................................................................ 26
3.4
Grades of Accuracy................................................................................................. 27
3.5
Permissible imbalance DIN ISO 21940-11 .............................................................. 27
4
Torques per screw ................................................................................................... 28

Table of contents
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5
Assembly................................................................................................................. 29
5.1
Installing and connecting ....................................................................................... 29
5.2
Finish turning the center sleeve blank ................................................................... 29
5.3
Checking the chuck mounting ................................................................................ 30
5.4
Mounting the lathe chuck onto the machine spindle............................................ 30
6
Function and handling ............................................................................................. 32
6.1
Function of the chuck ............................................................................................. 32
6.2
Handling the chuck and the base jaws ................................................................... 32
6.3
Base jaw position.................................................................................................... 33
6.4
Change or supplement of jaws............................................................................... 34
6.5
Functional testing ................................................................................................... 34
7
Maintenance ........................................................................................................... 36
7.1
Lubrication.............................................................................................................. 36
7.2
Maintenance intervals............................................................................................ 37
7.3
Technical condition ................................................................................................ 37
7.4
Disassembling and assembling the chuck .............................................................. 38
8
Chuck mounts and Spare parts ................................................................................ 40
8.1
Chuck mounts ......................................................................................................... 40
8.2
Spare parts.............................................................................................................. 40
9
Drawing................................................................................................................... 42
10
Translation of the original declaration of incorporation ........................................... 43
11
Appendix on Declaration of Incorporation, as per 2006/42/EC, annex II, No. 1 B ..... 44

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.
CAUTION
Material damage!
Information about avoiding material damage.
1
1.1
1.1.1

General
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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 NCX 165-53
•ROTA NCX 210-66
•ROTA NCX 260-81
•ROTA NCX 315-106
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,
(2.6, Page 9)
•Observe the specified maintenance and lubrication intervals,
(7, Page 36)
Parts touching the workpiece and wear parts are not included in
the warranty.
* A cycle consists of a complete clamping process ("Open" and
"Close").
Scope of delivery
1
Power chucks
1
Set of base jaws
3
Mounting screws
1
Jaw change key
1
Assembly key
1
Operating manual
1.1.2
1.1.3
1.2
1.3

Basic safety notes
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Basic safety notes
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 19).
•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 19)
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 19)
•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.
2
2.1
2.2

Basic safety notes
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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.
Chuck jaws
Requirements of the chuck jaws
Stored energy can make the product unsafe and risk the danger of
serious injuries and considerable material damage.
•Only replace chuck jaws if no residual energy can be released.
•Do not use welded jaws.
•The jaws should be designed as light and as low as possible. The
clamping point must be as close as possible to the chuck face
(clamping points at a greater distance lead to greater surface
pressure in the jaw guidance and can significantly reduce the
clamping force).
•If for constructional reasons the special chuck jaws are heavier
than the top jaws assigned to the lathe chuck, greater
centrifugal forces must be accounted for when defining the
required clamping force and the recommended speed.
•The maximum recommended speed may only be operated in
conjunction with maximum actuating force and only with the
lathe chuck in optimal, fully functioning condition.
•After a collision, the lathe chuck and the chuck jaws must be
subjected to a crack test before being used again. Damaged
parts must be replaced with original SCHUNK spare parts.
2.3
2.4
2.5

Basic safety notes
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9
•Screw the jaw mounting screws into the bore holes furthest
apart.
•The jaw fastening screws must be replaced if they show any
signs of wear or damage. Only use screws with a quality of 12.9.
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 19).
•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 tester
Depending on the operating conditions, the function and clamping
force must be checked after a certain period of operation
(7.2, Page 37). Only use a calibrated clamping force tester for
measuring during the clamping force test.
With the smallest possible actuating pressure (clamping 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
pistons no longer move properly, the chuck must be disassembled,
cleaned, and relubricated (7, Page 36).
2.6

Basic safety notes
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Personnel qualification
Inadequate qualifications of the personnel
If the personnel working with the product is not sufficiently
qualified, the result may be serious injuries and significant
property damage.
•All work may only be performed by qualified personnel.
•Before working with the product, the personnel must have read
and understood the complete assembly and operating manual.
•Observe the national safety regulations and rules and general
safety instructions.
The following personal qualifications are necessary for the various
activities related to the product:
Due to their technical training, knowledge and experience, trained
electricians are able to work on electrical systems, recognize and
avoid possible dangers and know the relevant standards and
regulations.
Due to its technical training, knowledge and experience, qualified
personnel is able to perform the delegated tasks, recognize and
avoid possible dangers and knows the relevant standards and
regulations.
Instructed persons were instructed by the operator about the
delegated tasks and possible dangers due to improper behaviour.
Due to its technical training, knowledge and experience, service
personnel of the manufacturer is able to perform the delegated
tasks and to recognize and avoid possible dangers.
2.7
Trained electrician
Qualified personnel
Instructed person
Service personnel of
the manufacturer