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Kitagawa PUES Series Instruction Manual

Work gripper
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INSTRUCTION MANUAL
PUES
DANGER
・ This instruction manual is for production engineers and maintenance
personnel in charge of operation of this product. When a beginner uses
this product, receive instructions from experienced personnel, the
distributor or our company.
・ Before installing, operating or maintaining this equipment, carefully
read this manual and the safety labels attached to the equipment.
Failure to follow these instructions and safety precautions could result
in serious injury, death, or property damage.
・ Store this manual near equipment for future reference.
・ If any questions related to safety arise about this manual, please
confirm them with the distributor or our company.
Kitagawa Corporation
77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan
type
Work Gripper
TEL +81-(0)847 -40-0561
FAX +81-(0)847-45-8911
Version 1.00 (2024.05.22)
Original instructions

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Summary of Contents for Kitagawa PUES Series

  • Page 1 ・ Store this manual near equipment for future reference. ・ If any questions related to safety arise about this manual, please confirm them with the distributor or our company. Kitagawa Corporation 77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan TEL +81-(0)847 -40-0561 FAX +81-(0)847-45-8911...

  • Page 2: Safety Alert Symbol

    Preface This manual provides detailed information about how to safely and correctly use the work gripper (PUES type). Before starting to use this work gripper, read this manual carefully and always follow the instructions and warnings in "Important Safety Precautions" and "Precautions for Use" at beginning of the manual.

  • Page 3: Guarantee And Limitation Of Liability

    Guarantee and Limitation of Liability The guarantee period of this product is 1 year after delivery. Use the parts delivered by Kitagawa Corporation for all the parts including consumable parts. We will not assume responsibility for injury, death, damage, or loss caused by usage of parts not manufactured by Kitagawa Corporation.

  • Page 4: Table Of Contents

    Table of Contents 1. Structural Drawing and Parts List -----------------------------------------------------------------------5 1-1. Type display 1-2. Structural drawing 1-3. Scope of product 1-4. Parts list Important Safety Precautions -----------------------------------------------------------10 3. Specifications ----------------------------------------------------------------------------------------------15 3-1. Specifications 3-2. Relationship between pressure and gripping force 4. Forming Soft Jaw ------------------------------------------------------------------------------------------18 4-1.
  • Page 5 For Machine Tool Manufacturers (Chapter 8) 8. Attachment -------------------------------------------------------------------------------------------------33 8-1. Air piping 8-2. Attachment of lock valve unit 8-3. Oil piping 9. Trial Operation ---------------------------------------------------------------------------------------------38 10. Other Information ----------------------------------------------------------------------------------------39 10-1. About standards and orders 10-2. Information about markings of product 10-3.

  • Page 6: Structural Drawing And Parts List

    1. Structural Drawing and Parts List 1-1. Type display Type display as shown below ＰUEＳ ０６ － １２３ Design No. Nominal Diameter PUES series 1-2. Structural drawing Fig.1-1...

  • Page 7: Scope Of Product

    1-3. Scope of product This instruction manual is for the work gripper. Other than information about the work gripper, it is mentioned about optional article (A lock valve unit). Fig.1-2 ・ To prevent the work from flying, safe design, maintenance and erroneous action prevention of the pneumatic system to maintain the gripping force of the work gripper is extremely important.

  • Page 8: Parts List

    1-4. Parts list Fig.1-3...
  • Page 9 Table 1-1 Part name Quantity No. Part name Quantity Body O-ring Flange O-ring Piston O-ring Cylinder O-ring Plunger O-ring Master jaw Greace nipple Plug Fixed plate Soft jaw Nylon cap Plug C Orifice nipple Plug D Retaining ring Block Parallel pin Hex.
  • Page 10 Fig.1-4 Lock valve unit Table 1-3 Part name Quantity No. Part name Quantity 34 Block 44 Plug 35 Seal washer 45 O-ring JASO 1015 36 Cap screw 46 O-ring JASO 1016 37 Cap 47 O-ring JASO 1017 38 Spring 48 O-ring JIS B2401 P9 39 Ball φ...

  • Page 11: Important Safety Precautions

    Important Safety Precautions Important safety precautions are summarized below. Please read this section before first starting to use this product. Failure to follow the safety precautions below will result in DANGER serious injury or death. Turn off main power supply before attaching, inspecting or replacing work gripper, and before adding oil.
  • Page 12 Important Safety Precautions Failure to follow the safety precautions below will result in DANGER serious injury or death. Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, which is dangerous as the work gripper or work will fly out.
  • Page 13 Important Safety Precautions Failure to follow the safety precautions below could result WARNING in serious injury or death. Use a lock valve (safety valve, check valve) incorporated in case of sudden pneumatic pressure drop due to blackout, malfunction, etc. Further, use a solenoid valve with a circuit that retains the gripping position when no current is carried.
  • Page 14 Important Safety Precautions Failure to follow the safety precautions below could result WARNING in serious injury or death. Use neither jaw that is taller jaw than standard jaw. The air pressure must not exceed the maximum air pressure, and the oil pressure must not exceed the maximum oil pressure.
  • Page 15 Important Safety Precautions Failure to follow the safety precautions below could result WARNING in serious injury or death. Do not modify the work gripper in a way not permitted by the manufacturer. For All Users ・ It may not only break the work gripper but the work gripper and the work may fly out, which is dangerous.

  • Page 16: Specifications

    3. Specifications 3-1. Specifications Table 3-1 Type PUES06 Plunger stroke Jaw stroke （in diameter） Gripping force (Air pressure : 0.6MPa) Gripping force (Oil pressure : 1.3MPa) Gripping range φ 70～φ 87 (Standard jaw) Gripping range φ 89～φ 108 (Option jaw) Gripping range φ...

  • Page 17: Relationship Between Pressure And Gripping Force

    ・ The attaching bolts of the soft jaw are tightened at the specified torque. (Refer to page ・ The numerical values are obtained with the Kitagawa gripping force meter . The gripping position of the gripping force meter is at a position 1/2 of the height of the soft jaw top surface (height from the chuck surface to the top surface of the jaw).
  • Page 18 ・ Use neither jaw that is taller jaw than standard jaw. The moment hanging to the work gripper becomes large when you use taller jaw and this is dangerous as the work gripper and work will fly out. Cutting condition As a review method of cutting condition, the following shows a calculation example in the case where the moment load is put on the workpiece by a drilling.

  • Page 19: Forming Soft Jaw

    ・ Use the bolts attached to the work gripper, and do not use other bolts. However, if you must use other bolts not provided by Kitagawa, use bolts that have at least a strength classification of 12.9 (10.9 for M22 or more) and be sure they are long enough.

  • Page 20: Forming Soft Jaw

    4-2. Forming soft jaw 1. Preparation of the forming jig ・ Prepare the forming jig A and B. The surface roughness of the inside diameter is to be approximately 25s, and make a shape with sufficient thickness which does not distort. (Refer to page 24) 2.
  • Page 21 5. Gripping of the forming jig B ・ Fit the forming jig B to the chuck and fix the jaws temporarily with jaw attaching bolt. Set hydraulic pressure to 0.4 – 0.5 MPa and grip the forming jig. Then push the forming jig to chuck evenly so that the forming jig does not tilt.
  • Page 22 FIG. 4-1 Forming jig (Reference) Table 4-2 Size PUES06 Forming jig A Forming jig B φ A φ B (Recommended) 130 Over 130 Over φ D ・ The gripping force, retracting motion and accuracy become stable when the gripping center height becomes as low as possible. ・...

  • Page 23: Usage

    5. Usage This product is a device to fix a work-piece when it is processed by the rotary table or the machining center. A built-in cylinder closes the jaw and fixes a work-piece so that it does not move during processing. The chuck opens the jaw after having processed it and remove a work-piece.

  • Page 24: Precautions Related To Usage Of Jaw

    5-3. Precautions related to usage of jaw ・ If a soft jaw other than one made by Kitagawa Corporation is used, the engagement will be inferior, and the master jaw will be deformed, the gripping precision will worsen, and the work will fly out due to gripping failure, which is dangerous.

  • Page 25: Attachment Of Locator And Jig

    5-5. Attachment of locator and jig The locator is required for the PLS work gripper. The PLS work gripper grips the work-piece in the radial direction and presses the work-piece to the locator simultaneously. Prepare the locator that has the dimensions, accuracy, materials and quenching suitable for processing the work-piece.

  • Page 26: Precautions Related To Usage Of Lock Valve Unit

    Shaded part additional process possible range Fig.5-1 Type PUES06 18.5 20 Below Table 5-1 A: Additional process impossible dimension. B: Processible depth of tapping or drilling a hole. 5-6. Precautions related to usage of lock valve unit Lock valve unit Lock valve retains the pneumatic pressure inside the cylinder temporarily, when the pneumatic pressure suddenly drops due to blackout or malfunction, etc.

  • Page 27: Maintenance And Inspection

    6. Maintenance and Inspection 6-1. Periodic Inspection ・ Add grease at least once a month. ・ Fully stroke the jaw before starting work or upon supplying grease, and check the specified stroke. ・ Always clean the chuck body or the sliding surface using an air gun, etc., at the end of work.
  • Page 28 Table 6-1 Genuine Kitagawa genuine product CHUCK GREASE PRO product (Kitagawa distributor of each country) Kitagawa chuck grease Conventional product Molykote EP Grease TORAY Dow Corning (only inside Japan) Conventional Chuck EEZ grease Kitagawa-Northtech Inc.

  • Page 29: Disassembling

    6-3. Disassembling Disassembling procedures Read the following disassembling procedures with reference to pages 7-9. 1. Turn off the main power of the machine before starting work. 2. If the lock valve unit is used, loosen slowly two cap screws [36] while bleeding the air gradually from the inside, and after making sure that the air is expelled completely, remove the screws.
  • Page 30 ・ Be sure to remove the eyebolt after use. If the machining starts without removing the eyebolt, it will interfere with a tool, causing the bolt or tool to fly out. ・ Disassemble and clean the work gripper at least once every 6 months or every 100,000 strokes (once every 2 months or more for cutting cast metal).

  • Page 31: Inspection Of Lock Valve Unit

    6-4. Inspection of lock valve unit When the lock valve unit is used, confirm whether there will not be the decrease in inner pressure because of the air leakage in at least once a week. Read the following procedures with reference to pages 7-9. 1.

  • Page 32: Malfunction And Countermeasures

    7. Malfunction and Countermeasures 7-1. In the case of malfunction Check the points specified in the table below and take the appropriate countermeasure. Table 7-1 Defective Cause Countermeasure The work gripper inside will break. Disassemble and replace the broken part. The work gripper The sliding surface is seized.

  • Page 33: Where To Contact In The Case Of Malfunction

    ・ If the work gripper failed due to a seizure or breakage, remove the work gripper from the machine, following the disassembly steps in page 28. When the work gripper cannot be removed due to a blockage of workpiece, do not disassemble forcibly but please contact us or our agent.

  • Page 34: Attachment

    For Machine Tool Manufactures Following pages are described for machine tool manufacturers (personnel who attach a chuck to a machine). Please read following instruction carefully when you attach or detach a chuck to machine, and please sufficiently understand and follow the instructions for safe operation.

  • Page 35: Attachment Of Lock Valve Unit

    8-1-2. Piping ・ Connect the pipe to the air supply port at the block or work gripper bottom. Blind the port on the side not used. (See Fig.8-5) ・ To prevent the pressure drop and flow rate drop, use the pipe of Rc1/8 or larger size. Also, use the minimum number of elbows.

  • Page 36: Oil Piping

    8-3. Oil piping 8-1-1. Outline drawing of attachment Fig.8-3 8-1-2. Piping ・ Attach the manual switching valve at a position where it is easy to operate for the attaching equipment. ・ Install the hydraulic unit at a position where the needle of the pressure gauge is easily read.
  • Page 37 ・ Especially, when a large sized hydraulic unit is used, excessive surge pressure is generated and the gripping force becomes large, therefore, it may result in breakage of the chuck or the lowering of endurance. Restrain the surge pressure by adopting a throttle valve, etc.
  • Page 38 Fig.8-5 Table 8-1 Dimension PLS06 φ A φ B φ D * C-1 show when lock valve unit is installed...

  • Page 39: Trial Operation

    9. Trial Operation Thoroughly read the “Important Safety Precautions” on and after page 10 in this manual before trial operation. Air pressure 1. Supply grease, following the “6-2.Grease lubrication” on and after page 26 in this manual. 2. Supply turbine oil of additive-free of Class 1 (Viscosity ISO: VG32 or the equivalent) up to the upper extreme end of the indication table of the lubricator of the air control unit.

  • Page 40: Other Information

    10. Other information 10-1. About standards and orders This product is based on the following standards or orders. ・ Machinery directive:2006/42/EC Annex I ・ EN ISO 12100:2010 ・ EN1550:1997+A1:2008 10-2. Information about markings of product Fig.10-1 10-3.About disposal Ultimate disposal of this product should be handled according to all national laws and regulations.
  • Page 41 We also declare that the specific technical documentation for this partly completed machinery was drawn up according to the EC Machinery Directive 2006/42/EC Annex VII part B. Product : Work gripper Model : PUES series (Models PUES06) Serial number : See original declaration Manufacturer : Kitagawa Corporation...
  • Page 42 We also declare that the specific technical documentation for this partly completed machinery was drawn up according to the Supply of Machinery (Safety) Regulations 2008 Annex VII part B. Product : Work gripper Model : PUES series (Models PUES06) Serial number : See original declaration Manufacturer : Kitagawa Corporation...
  • Page 43 The products herein are controlled under Japanese Foreign Exchange and Foreign Trade Control Act. In the event of importing and/or exporting the products, you are obliged to consult KITAGAWA as well as your government for t he related regulation prior to any transaction.

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