CKD AFB-RB Series User manual

INSTRUCTION MANUAL
•Read this Instruction Manual before using the product.
•Read the safety notes carefully.
•Keep this Instruction Manual in a safe and convenient place for future reference.
SM-A05706-A
Active Fine Buffer
AFB-RB Series

SM-A05706-A PREFACE
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PREFACE
Thank you for purchasing CKD's "AFB-RB Series" active fine buffer. This Instruction Manual contains
basic matters such as installation and usage instructions in order to ensure optimal performance of the
product. Please read this Instruction Manual thoroughly and use the product properly.
Keep this Instruction Manual in a safe place and be careful not to lose it.
Product specifications and appearances presented in this Instruction Manual are subject to change
without notice.
•The product is intended for users who have basic knowledge about materials, piping, electricity, and
mechanisms of pneumatic components. CKD shall not be responsible for accidents caused by
persons who selected or used the product without knowledge or sufficient training.
•Since there are a wide variety of customer applications, it is impossible for CKD to be aware of all of
them. Depending on the application or usage, the product may not be able to exercise its full
performance or an accident may occur due to fluid, piping, or other conditions. It is the responsibility
of the customer to check the product specifications and decide how the product shall be used in
accordance with the application and usage.

SM-A05706-A SAFETY INFORMATION
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SAFETY INFORMATION
When designing and manufacturing any device incorporating the product, the manufacturer has an
obligation to ensure that the device is safe. To that end, make sure that the safety of the machine
mechanism of the device, the pneumatic or fluid control circuit, and the electric system that controls such
mechanism is ensured.
To ensure the safety of device design and control, observe organization standards, relevant laws and
regulations, which include the following:
ISO 4414, JIS B 8370 (the latest edition of each standard), the High Pressure Gas SafetyAct, the
Industrial Safety and HealthAct, other safety rules, organization standards, relevant laws and
regulations
In order to use our products safely, it is important to select, use, handle, and maintain the products
properly.
Observe the warnings and precautions described in this Instruction Manual to ensure device safety.
Although various safety measures have been adopted in the product, customer's improper handling may
lead to an accident. To avoid this:
Thoroughly read and understand this Instruction Manual
before using the product.
To explicitly indicate the severity and likelihood of a potential harm or damage, precautions are classified
into three categories: "DANGER", "WARNING", and "CAUTION".
DANGER
Indicates an imminent hazard. Improper handling will cause death or serious
injury to people.
WARNING
Indicates a potential hazard. Improper handling may cause death or serious
injury to people.
CAUTION
Indicates a potential hazard. Improper handling may cause injury to people or
damage to property.
Precautions classified as "CAUTION" may still lead to serious results depending on the situation.
All precautions are equally important and must be observed.
Other general precautions and tips on using the product are indicated by the following icon.
Indicates general precautions and tips on using the product.

SM-A05706-A SAFETY INFORMATION
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Precautions on Product Use
WARNING
The product must be handled by a qualified person who has extensive knowledge and
experience.
The product is designed and manufactured as a device or part for general industrial machinery.
Use the product within the specifications.
The product must not be used beyond its specifications.Also, the product must not be modified
and additional work on the product must not be performed.
The product is intended for use in devices or parts for general industrial machinery. It is not
intended for use outdoors or in the conditions or environment listed below.
•In applications for nuclear power, railroad system, aviation, ship, vehicle, medical equipment,
and equipment that directly touches beverage or food.
•For special applications that require safety including amusement equipment, emergency
shut-off circuit, press machine, brake circuit, and safety measures.
•For applications where life or properties may be adversely affected and special safety measures
are required.
(Exception is made if the customer consults with CKD prior to use and understands the
specifications of the product. However, even in that case, safety measures must be taken to avoid
danger in case of a possible failure.)
Do not handle the product or remove pipes and devices until confirming safety.
•Inspect and service the machine and devices after confirming the safety of the entire system.
Also, turn off the energy source (air supply or water supply) and power to the relevant facility.
Release compressed air and fluid from the system and use extreme care to avoid water or
electric leakage.
•Since there may be hot or live parts even after operation has stopped, use extreme care when
handling the product or removing pipes and devices.
•When starting or restarting a machine or device that incorporates pneumatic components, make
sure that a safety measure (such as a pop-out prevention mechanism) is in place and system
safety is secured.

SM-A05706-A SAFETY INFORMATION
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Precautions on Design and Selection
WARNING
Do not use the product as a valve for ensuring safety such as an emergency shut-off valve.
The product is not designed to be used as a valve for ensuring safety such as an emergency
shut-off valve. If using the product for such a system, take appropriate measures in advance to
secure safety.
The customer is responsible for checking the specifications of the product and the
compatibility with the customer's system when selecting and handling devices.
Incorrect selection and handling of devices may cause problems not only with the product but also
with the customer's system.
When using the product for equipment that has great influence on society and on public, take
safety measures to protect the equipment in case the motor stops.
Install an emergency stop device or provide an emergency stop circuit so that equipment
failures and malfunctions do not adversely affect people and things.
Check the compatibility between the wetted part materials and the working fluid before use.
Observe the ambient temperature described in the Specifications.
Observe the working pressure described in the Specifications.
Use the product within the rated voltage range and the rated current range.
Use compressed air (equivalent to JIS B 8392-1: 2003*) that does not contain solid foreign
matters.
Air of poor quality may adversely affect the product characteristics and lead to lower durability.
* Maximum number of solid particles per m3by size: 100 of 0.1 ≤μm <0.5,
1 of 0.5 ≤μm <1.0,
0 of 1 ≤μm.
Pressure dew point: + 3 °C or less
Oil concentration: 0.1 mg/m3 or less

SM-A05706-A CONTENTS
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CONTENTS
PREFACE........................................................................................................................... i
SAFETY INFORMATION.................................................................................................. ii
Precautions on Product Use..........................................................................................iii
Precautions on Design and Selection ...........................................................................iv
CONTENTS....................................................................................................................... v
1. PRODUCT OVERVIEW............................................................................................. 1
1.1 Product Features ................................................................................................1
1.2 Part Name........................................................................................................... 1
1.3 Model Number Indication....................................................................................2
1.4 Specifications...................................................................................................... 2
1.5 Dimensions......................................................................................................... 3
1.6 Description of Operation..................................................................................... 3
2. INSTALLATION ......................................................................................................... 4
2.1 Environment........................................................................................................ 4
2.2 Unpacking...........................................................................................................5
2.3 Mounting.............................................................................................................5
2.4 Piping..................................................................................................................6
2.5 Wiring..................................................................................................................6
2.5.1 Motor...............................................................................................................7
3. USAGE....................................................................................................................... 8
3.1 Safety Instructions .............................................................................................. 8
3.1.1 Jig................................................................................................................... 9
4. MAINTENANCE AND INSPECTION....................................................................... 10
4.1 Periodic Inspection............................................................................................10
5. TROUBLESHOOTING............................................................................................. 11
5.1 Problems, Causes, and Solutions .....................................................................11
6. WARRANTY PROVISIONS..................................................................................... 12
6.1 Warranty Conditions .........................................................................................12
6.2 Warranty Period................................................................................................12

SM-A05706-A 1. PRODUCT OVERVIEW
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1. PRODUCT OVERVIEW
1.1 Product Features
This product is an actuator that picks and holds a workpiece such as a chip component by vacuum
suction, performs θ alignment, and places the workpiece. Features include the following:
•The product is intended for use in the transfer and mounting of small workpieces such as chip
components.
•The pressing force is constant regardless of stroke length since magnetic springs are used.
•This product has low dust generation, long service life, and high performance compared to a product
that uses metal springs.
•The built-in ball guide bushing suppresses axial runout due to rotation to a minimum (0.01 mm or
less).
•The built-in rotation prevention mechanism prevents loss of synchronization due to overload, which is
a phenomenon that is characteristic of magnetic springs.
•Piping and mounting can be done from front surface of the body, ensuring easy handling.
•The product is dimensioned to fit the small motor (20 mm wide) snugly and thus is space saving.
1.2 Part Name
No.
Name
Description
1
Shaft
The shaft end is D-shaped so that a jig can be attached.
There is a ball guide bushing in the front part of the body to suppress axial runout of
the shaft during rotation.
2
Seal bushing
Since the seal bushings are clearance seals, the shaft can rotate and buffer without
any influence. The degree of vacuum suction for holding the workpiece is maintained
at the shaft end.
3
Ring magnet
Same magnet is used in CKD’s FBU Series. It generates buffer force.
4
Stepping motor
The 2-phase or 5-phase motor manufactured by Oriental Motor Co., Ltd. or the
2-phase motor manufactured by MinebeaMitsumi Inc. can be selected.
5
Body
An aluminum material is used for weight reduction. The mounting surface has a φ3
hole and a 3x5 slotted hole for positioning.
6
Pin for preventing loss of
synchronization
This is a mechanism for preventing the magnetic springs from losing synchronization
during alignment. A small ball bearing rolls along the guide groove so that there is no
sliding resistance during buffering.

SM-A05706-A 1. PRODUCT OVERVIEW
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1.3 Model Number Indication
Although the motor is a special order model number for AFB-RB,
refer to the above model number to check motor specifications.
1.4 Specifications
Model
Item
AFB-RB
Buffer force N
0.5 ± 0.2, 1.0 ± 0.2 (selectable)
Buffer force fluctuation Note 1
±15% or less
Stroke length mm
3, 6 (selectable)
Ambient temperature °C
10 to 40
Storage ambient temperature °C
0 to 50 (no condensation)
Rotation runout mm
0.01
Repeatability
Note 2
X, Y mm
± 0.01
Z mm
±0.02
θ°
±0.2
Product weight g
Approximately 120
Mounting orientation Note3
Shaft facing downward
Load capacity g
50 or less
Moment of inertia of load kg・m2
2.45 x 10-6 or less
Weight of movable section g
21
Moment of inertia of movable section
kg・m2
4.56×10-7
Operating rotational speed rpm
100 or less
Note 1: This is the fluctuation of the buffer force during stroke operation. It does not indicate that the buffer force is proportional to the
stroke length.
Note 2: Repeatability indicates the position to which the shaft returns after buffering.
Note 3: Buffer force takes into consideration the weight of the movable section when the product is used facing downward.
* Holding torque depends on motor specifications.

SM-A05706-A 1. PRODUCT OVERVIEW
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1.5 Dimensions
1.6 Description of Operation
•The shaft rotates synchronously with the rotation of the stepping motor.
(The motor driver, controller, and DC power supply for driving the stepping motor are not supplied with
the product. They are to be supplied, wired, and controlled by the customer.)
•The shaft has a through hole that leads to the M5 (vacuum port) on the front surface of the body and
the workpiece can be held at the shaft end by vacuum suction. This allows the shaft to rotate and
buffer while holding the workpiece.
•Applying slight amount of pressure to the vacuum port will allow the workpiece to be released
smoothly.Adjust the amount of pressure to apply in accordance with the workpiece weight. Do not
apply more than 50 kPa and do not pressurize continuously.
•The pin for preventing loss of synchronization is placed between the fixed shaft and the movable shaft
and prevents an external force from rotating the movable shaft. A small ball bearing is press-fitted and
bonded to the pin in order to prevent the influence of friction due to rubbing during buffering.
•The shaft can stack workpieces and then press them. The shaft and the movable shaft are structured
so that the load is not directly applied to the motor shaft. The press load should not exceed 50 N
(about 5 kgf) and the product must not be subjected to impact load.

SM-A05706-A 2. INSTALLATION
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2. INSTALLATION
WARNING
Make sure that a qualified person (who fully understands the system and has read this
Instruction Manual thoroughly) performs Installation, piping, and wiring.
Incorrect installation and piping may cause problems not only with the product but also with the
customer’s system and may result in death or serious injury to the user.
CAUTION
Do not use the product if it may have been dropped or subjected to strong external force.
Install a protection circuit such as a thermal fuse in case of damage to the motor or failure of
the circuit.
2.1 Environment
WARNING
Consider measures for dissipating heat generated from the motor.
Appropriate ventilation or heat dissipation measures must be considered if the product is installed
in a control board or needs to be energized for a long period.
•When using the product in cold climates, take proper measures against freezing.
•The product cannot be used outdoors. Protect the product by installing it inside a cover or a
case.
•Install the product on a smooth and flat surface with a flatness of 0.01 mm or less.
•Secure sufficient space for working safely during maintenance and troubleshooting.
Do not use the product in an environment where:
•Fluids such as water can splash onto the product
•Condensation can occur due to high humidity and temperature change
•Atmosphere contains explosive gas, inflammable gas, corrosive gas, or solvents
•Atmosphere contains magnetic cutting chips or dust
•There is a heat source in the surrounding area and heat is radiated
•Strong magnetism occurs nearby
•Inflammable materials are nearby
•The product is subjected to vibrations and inertia