SCHUNK ROTA NCX Instrucciones de uso

Translation of Original Operating Manual

Power chucks

ROTA NCX

Assembly and Operating Manual

Superior Clamping and Gripping

Imprint

03.00|0889148_ROTA NCX |en

Imprint

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

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. +49–7572-7614-0

Fax +49-7572-7614-1099

[email protected]

schunk.com

Table of contents

03.00|0889148_ROTA NCX |en

Table of contents

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

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

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

Torques per screw ................................................................................................... 28

Table of contents

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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

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

Maintenance ........................................................................................................... 36

7.1

Lubrication.............................................................................................................. 36

7.2

Maintenance intervals............................................................................................ 37

7.3

Technical condition ................................................................................................ 37

7.4

Disassembling and assembling the chuck .............................................................. 38

Chuck mounts and Spare parts ................................................................................ 40

8.1

Chuck mounts ......................................................................................................... 40

8.2

Spare parts.............................................................................................................. 40

Drawing................................................................................................................... 42

Translation of the original declaration of incorporation ........................................... 43

Appendix on Declaration of Incorporation, as per 2006/42/EC, annex II, No. 1 B ..... 44

General

03.00|0889148_ROTA NCX |en

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

General

03.00|0889148_ROTA NCX |en

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

Power chucks

Set of base jaws

Mounting screws

Jaw change key

Assembly key

Operating manual

1.1.2

1.1.3

1.2

1.3

Basic safety notes

03.00|0889148_ROTA NCX |en

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.

2.1

2.2

Basic safety notes

03.00|0889148_ROTA NCX |en

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

03.00|0889148_ROTA NCX |en

•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

03.00|0889148_ROTA NCX |en

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

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