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INSTRUCTION MANUAL
N/NT/NL/NLT
Closed Center Power Chuck
・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
Te l . +81-847-40-0561
Fax. +81-847-45-8911
Version 1.09 (2019.09.03)
Original instructions
type
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Table of Contents
Related Manuals for Kitagawa N Series
Summary of Contents for Kitagawa N Series
- Page 1 ・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 Te l . +81-847-40-0561 Fax. +81-847-45-8911...
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Page 2: Guarantee And Limitation Of Liability
The chuck and cylinder from Kitagawa Corporation should be used together. If you must use a part not made by Kitagawa, check with us or our distributor to be sure it is safe to do so. We will not be responsible for injury, death, ... -
Page 3: Table Of Contents
Table of Contents 1. Structural Drawing and Parts List ……………………………………………………………… 3 1-1. Type display 1-2. Structural drawing 1-3. Scope of product 1-4. Parts list Important Safety Precautions ………………………………………………………… 6 3. Specifications …………………………………………………………………………………… 12 3-1. Specifications 3-2. Relationship between gripping force and rotation speed 3-3. Relationship between gripping part center height, static griping force and input force / Relationship between top jaw mass moment and gripping force loss 4. Forming Soft Jaw ……………………………………………………………………………… 26 4-1. Attachment of soft jaw 4-2. Forming soft jaw with outside diameter gripping 4-3. Forming soft jaw with inside diameter gripping 4-4. Forming method when you use forming jig 5. Usage …………………………………………………………………………………………… 30 5-1. Precautions during gripping work with chuck 5-2. Precautions during gripping work in irregular shape 5-3. Precautions related to usage of jaw 5-4. Precautions related to processing 5-5. Attachment of locator and jig 6. Maintenance and Inspection ………………………………………………………………… 33 6-1. Periodic Inspection 6-2. Grease lubrication 6-3. Disassembling 7. Malfunction and Countermeasures …………………………………………………………… 36 7-1. In the case of malfunction 7-2. Where to contact in the case of malfunction For Machine Tool Manufacturers (Chapter 8) 8. Attachment ……………………………………………………………………………………… 37 8-1. Outline drawing of attachment 8-2. In the case that the back plate must be manufactured 8-3. In the case of with back plate... -
Page 4: Structural Drawing And Parts List
1 . Structural Drawing and Parts List 1−1 Type display Type display as shown below N - 0 6 A 0 6 9 9 9 Design No. Attachment shape Straight spigot joint ：− −5 ：A05 −6 ：A06 −8 ：A08 −11 ：A11 −15（Former JIS） ：A15 Chuck nominal diameter −15（New JIS） ：C15 （inch） Type N- : 3 JAW NT : 2 JAW NL : 3 JAW（Long Stroke） N L T 0 6 A 6 9 9 9 Design No. -
Page 5: Scope Of Product
4"、5" 6"〜15" 4"、5" 6"〜24" NT、NLT type N、NL type Fig.2 1−3 Scope of product This instruction manual is for the chuck part. Cylinder Chuck Drain hose Flexible hose Pressure adjusting Pressure Hydraulic screw gauge pump Manual switching valve SOL. Line Filter Solenoid valve Tank Fig.3 WARNING ・To prevent the work from flying, safe design, maintenance and erroneous action prevention of the hydraulic system ... - Page 6 1−4 Parts list Fig.4 Table 1 Quantity Part name Quantity Part name Body Set screw Wedge plunger Set screw 2or3 Master jaw 2or3 Grease nipple Soft jaw 2or3 Steel ball 2or3 * Ｔ nut Handle Cover Hex key Draw screw Hex key Draw tube Hex key Draw nut Hex key Spring Hex key Lead ball Hex key Stop bolt 2or3 Hex key Chuck attaching bolt Socket head cap screw Back plate 3or4 * Machine screw Socket head cap screw...
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Page 7: Important Safety Precautions
2 . Important Safety Precautions Important safety precautions are summarized below. Please read this section before first starting to use this product. DANGER Failure to follow the safety precautions below will result in serious injury or death. Turn off main power supply before attaching, inspecting or replacing chuck, and before adding oil. For All Users ・The chuck may start rotation suddenly, and a part of the body or clothing may be Main power supply caught. Lathe Close door before rotating spindle. For All Users ・If the door is not closed, you may touch the rotating chuck or the work may fly out, ... - Page 8 DANGER Failure to follow the safety precautions below will result in serious injury or death. Do not allow the rotation speed of the chuck to exceed the maximum allowable speed limit. (Refer to pages 16-25) For All Users ・If the rotation speed of the chuck exceeds the rotation speed limit, this is very Fly out dangerous as the chuck and work will fly out. Work The input force of the chuck (piston thrust, pulling force of the draw bar) must not exceed the allowable maximum input force. For All Users (Refer to pages 16-25) ・Input must match the specification of Cylinder the chuck. Draw bar ・Adjust the hydraulic pressure to the cylinder so that the input force, which ...
- Page 9 Important Safety Precautions DANGER Failure to follow the safety precautions below will result in serious injury or death. When the protrusion of the work is long, support it with the steady rest or center. For All Users ・If the protrusion is long, the tip of the work can turn and the work fly out. Tail stock Center Determine the gripping force required for processing by the machine tool manufacturer or user, and check that the required gripping force is provided before processing. For All Users (Refer to pages 16-25 and cylinder manual) ・Adjust the hydraulic pressure to the cylinder to obtain the required gripping Fly out force. If the gripping force is insufficient, this is dangerous as the work will fly out. Work Use of a chuck and cylinder that cannot be used together safely may cause the cylinder to break at high pressure resulting in the chuck For All Users and work flying out. ・Check that the chuck and the cylinder are in the ...
- Page 10 DANGER Failure to follow the safety precautions below will result in serious injury or death. In the case of processing a significant unbalanced work, lower the rotation speed. For All Users ・Unbalanced work generates dangerous Unbalanced work centrifugal forces and the work could fly out. Fly out Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, which is dangerous as the chuck or work will fly out. Use the For All Users bolts attached to the chuck, and do not use bolts other than these. ・If the torque is insufficient or excessive, the bolt will break, which Specified torque for socket head cap screw is dangerous as the chuck or work will fly out. Bolt size Tightening torque ・Fix the lathe spindle or the chuck when you tighten bolts. Your 13 N ・...
- Page 11 Important Safety Precautions DANGER Failure to follow the safety precautions below will result in serious injury or death. Provide sufficient strength for the draw bar (Refer to pages 38-39). Provide sufficient screw depth for the draw bar. For Machine Tool Manufactures Firmly tighten the draw bar. ・If the draw bar break, the gripping force is instantly lost and this is dangerous as work will fly out. ・If the screw depth of the draw bar is insufficient, the screw will break and the Cylinder adapter Draw bar Chuck gripping force will be lost instantly, and this is Cylinder dangerous as work will fly out.
- Page 12 Important Safety Precautions WARNING Failure to follow the safety precautions below could result in serious injury or death. Do not modify the chuck in a way not permitted by the manufacturer. For All Users ・It may not only break the chuck but the chuck and the work may fly out, which is dangerous. ・If you attach a locator or jig on the chuck body surface, only process work in an acceptable range (Refer to page 31). Periodically supply adequate grease (Refer to page 33). Turn off power before adding grease. For All Users ・Insufficient grease supply lowers the gripping force, causes operation failure due ...
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Page 13: Specifications
3 . Specifications 3−1 Specifications Table 2-1 ・ N type Type N-04 N-05 N-06 N-08 N-10 Plunger stroke Jaw stroke （in diameter） Allowable maximum input force (kgf) (836) (836) (1835) (2549) (2957) 22.8 25.2 52.5 Maximum static gripping force (2325) (2570) (5353) (7648) (11013) (kgf) Allowable maximum 6000 5500 5270 4760 4010 rotation speed Standard soft jaw height (Z axis) Gripping range φ6〜110 φ15〜165 φ23〜210... - Page 14 ・ N-A type Table 3-1 Type N-06A05 N-08A06 N-10A06 N-10A08 N-12A06 N-12A08 N-15A08 N-15A11 Plunger stroke Jaw stroke （in diameter） 10.5 Allowable maximum input force (kgf) (1835) (2549) (2957) (4181) (8362) 52.5 Maximum static gripping force (5353) (7648) (11013) (15907) (25391) (kgf) Allowable maximum 5270 4010 3380 3040 4760 rotation speed Standard soft jaw height (Z axis) Gripping range φ15〜165 φ24〜254 φ26〜304...
- Page 15 ・ NT type Table 4 NT04 NT05 NT15 Type Plunger stroke Jaw stroke （in diameter） 54.7 Allowable maximum input force (540) (540) (5578) (kgf) 15.2 16.8 Maximum static gripping force (1550) (1713) (16927) (kgf) Allowable maximum 6000 5500 3040 rotation speed Standard soft jaw height (Z axis) Gripping range φ7〜110 φ20〜135 φ80〜381 (outside diameter gripping) Mass (standard soft jaw included) Moment of inertia 0.007 0.013 1.79 kg・m Ｙ0715R Ｙ0715R...
- Page 16 ・ NLT type Table 6 ＮLT06 ＮLT08 ＮLT10 ＮLT12 Type Plunger stroke Jaw stroke （in diameter） 16.2 18.1 19.4 Allowable maximum input force (kgf) (1427) (2039) (2753) (3671) Maximum static gripping force (2651) (4078) (5506) (7546) (kgf) Allowable maximum 4300 3600 3100 2500 rotation speed Standard soft jaw height (Z axis) Gripping range φ25〜165 φ26〜210 φ30〜254 φ36〜304 (outside diameter gripping) Mass 12.5 35.5 60.5...
- Page 17 １．Maximum static gripping force The static gripping force is the gripping force when the chuck is at a stop. The power chuck has a mechanism to convert input force (piston thrust force, draw bar drawing force) from the cylinder to gripping force. Therefore, the gripping force when the allowable maximum input force becomes the maximum static gripping force. However, the gripping force is different depending on the state of grease lubrication, grease in use, height of the jaw, etc. The maximum static gripping force specified in the standard soft jaw specification is the value under the following conditions: ・The Kitagawa standard soft jaw is used as the jaw. ・The attaching bolts of the soft jaw are tightened at the specified torque. (Refer to page 9) ・The numerical values are obtained with the Kitagawa Allowable gripping force meter . The gripping position of the maximum gripping force meter is at a position 1/2 of the height input force of the soft jaw top surface (height from the chuck ...
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Page 18: Relationship Between Gripping Force And Rotation Speed
As the rotation speed becomes higher, the centrifugal force of the jaw increases and the gripping force lowers. The curves displayed in Fig. 6〜9 shows relationships between the rotation speed and the centrifugal force when using the standard soft jaw. The centrifugal force differs significantly depending on the size and shape of the top jaw and the attaching position, therefore, when the rotation speed is high, actual measurement using a Kitagawa gripping force meter is required. Fig.6 N type N-05 Input ... - Page 19 Fig.7 NT type NT04 NT05 Input force 15.2 Input force 16.8 5500 Limit Limit 1000 2000 3000 4000 5000 6000 1000 2000 3000 4000 5000 ： ｍ ｉ ｎ − １ (r.p.m) ： ｍ ｉ ｎ − １ (r.p.m) Rotation Speed Rotation Speed NT15 Input ...
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Page 20: Relationship Between Gripping Part Center Height, Static Griping Force And Input Force / Relationship Between Top Jaw Mass Moment And Gripping Force Loss
Fig.9 NLT type NLT08 Input force NLT06 Input force 4300 Limit 1000 2000 3000 4000 1000 2000 3000 3600 ー １ ー １ Rotation Speed ： ｍ ｉ ｎ Rotation Speed ： ｍ ｉ ｎ (r.p.m) (r.p.m) NLT12 NLT10 Input force Input force 3100 Limit Limit 1000... - Page 21 DANGER ・Keep the height of the top jaw within the range of the gripping force limit table. (Refer to Fig.11-14) ・If a top jaw is taller than the standard soft jaw, use it at the input force (piston thrust force, draw bar drawing force) specified in the gripping force limit table. If it is used without lowering the input, the chuck will break and this is dangerous as the chuck and work will fly out. Fig.11 N type Input force 15.2 22.8 Limit N-04 14.5 Standard soft top jaw Standard soft top jaw Mass moment of top jaw Gripping part center height H （㎜） m×r×3 （...
- Page 22 Input force N-10 Limit 80 60 40 20 0 Standard soft top jaw Standard soft top jaw Gripping part center height H （㎜） Mass moment of top jaw m×r×3 （ ㎏ ・㎜） Input force N-12 Limit 80 60 40 20 46.5 0 1000 1200 Standard soft top jaw Standard soft top jaw Mass moment of top jaw Gripping part center height H （㎜） m×r×3 （ ㎏ ・㎜） Input force N-15 Limit 50...
- Page 23 Input force Limit N-24 50 0 1000 2000 3000 4000 5000 6000 7000 Standard soft top jaw Standard soft top jaw Mass moment of top jaw Gripping part center height H （㎜） m×r×3 （ ㎏ ・㎜） Fig.12 NT type Input force NT04 15.2 10.1 Limit 5 14.5 Standard soft top jaw Standard soft top jaw Mass moment of top jaw Gripping part center height H （㎜） m×r×2 （ ㎏ ・㎜） Input ...
- Page 24 Input force Limit 26.1 NL06 5 0 Standard soft top jaw Standard soft top jaw Mass moment of top jaw Gripping part center height H （㎜） m×r×3 （ ㎏ ・㎜） Input force NL08 Limit 0 Standard soft top jaw Standard soft top jaw Mass moment of top jaw Gripping part center height H （㎜） m×r×3 （ ㎏ ・㎜） Input force NL10 80 Limit 70 60 50 40 30 20 10 0...
- Page 25 Input force Limit NL18 80 60 30kN 40 50 20kN 20 0 1000 500 1500 2000 2500 3000 Standard soft top jaw Standard soft top jaw Mass moment of top jaw Gripping part center height H （㎜） m×r×3 （ ㎏ ・㎜） Fig.14 NLT type Input force NLT06 Limit 17.4 5 0 Standard soft top jaw Standard soft top jaw Mass moment of top jaw Gripping part center height H （㎜） m×r×2 （...
- Page 26 NOTICE Analysis of the gripping force, input force and rotation speed using Fig. 11-14 is carried out as shown below. ・For example, in the case of N-04 standard soft jaw (mass moment 17kg・mm), it cannot exceed 6000min (rpm), and the gripping force loss due to the centrifugal force at this rotation speed is 15.2kN (approx. 1550kgf). The required static gripping force for the dynamic gripping force (gripping force loss by static gripping force - centrifugal ...
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Page 27: Forming Soft Jaw
4 . Forming Soft Jaw 4−1 Attachment of soft jaw The attaching position of the soft jaw can be adjusted by loosening the socket head cap screw, attaching the soft jaw and by changing each serration engagement position. Use the most appropriate soft jaw considering the shape, dimension, material, and surface roughness of the work and the cutting conditions, etc. DANGER ・Use the T nut so that it does not come out from the master jaw. (Refer to Fig.15) ・It if the T nut comes out from the master jaw, the master jaw and T nut will break causing the work to fly out and a possible precision failure. Hard jaw T nut Fig.15 ・Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, which is dangerous as the chuck or work will fly out. Table 8 Bolt size Tightening torque Bolt size Tightening torque Bolt size Tightening torque M 6 13 N ・ m 107 N ・ m 402 N ・ m M 8 33 N ・ m 171 N ・ m 539 N ・ m 73 N ・... -
Page 28: Forming Soft Jaw With Outside Diameter Gripping
4−2 Forming soft jaw with outside diameter gripping １．Preparation of the plug for forming ・Prepare the plug for forming. The surface roughness of the plug outside diameter is to be approximately 25s, and make a shape with sufficient thickness which does not distort. ・It is convenient to prepare various outside diameter dimensions for dimensions of forming parts. ・It is convenient to process tapping in the center part of the plug and to guide with a bolt, etc. -
Page 29: Forming Soft Jaw With Inside Diameter Gripping
4−3 Forming soft jaw with inside diameter gripping １．Preparation of the ring for forming ・Prepare the ring for forming. The surface roughness of the ring inside diameter is to be approximately 25s, and make a shape with a sufficient thickness which does not distort. ・It is convenient to prepare various inside diameter dimensions for dimensions of forming parts. ２．Process of the ring gripping part for forming ・Operate the switch valve and minimize the jaw to close. ・Then, process the φD part (part to grip the ring for forming). Set the dimension φD so that gripping near the center of the jaw maximum stroke (diameter) is possible. -
Page 30: Forming Method When You Use Forming Jig
4−4 Forming method when you use forming jig １．Preparation of the jig for forming Ex.1 Ex.2 Plate ・Prepare the jig for forming. (There is a commercially available product.) ・Attach the pin (Example 1) or the bolt and nut (Example 2) by dividing equally into 3 portions onto the ring shape plate. Make the Protrusion ring into a shape with sufficient thickness which does not distort. Bolt and nut ２．Gripping of the jig for forming ・Operate the switch valve and maximize the opening of the jaw. Then, operate the switch valve to insert the jig for forming into the ... -
Page 31: Usage
・If the protrusion of the work is long, support it with a center or the steady rest. If the protrusion is long the tip of the work turns, and this is dangerous as the work will fly out. 5−3 Precautions related to usage of jaw DANGER ・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. ・Do not use a top jaw with a different serration pitch from the master jaw. The engagement of the crests of the serration will become insufficient, therefore, the serration crests will break when gripping the work, and this is ... -
Page 32: Precautions Related To Processing
5−4 Precautions related to processing DANGER <1> Unbalance ・In the case of processing largely unbalanced work, lower the rotation speed. The work will fly out and this is dangerous. ・Vibrations are generated if there is unbalance owing to the work or the jig, etc. Vibration not only will impart a negative ... - Page 33 Table 10 Type A (mm) B (mm) C (mm) N-04, NL04, NT04 15 or less N-05, NT05 15 or less N-06, NL06, NLT06 20 or less N-08, NL08, NLT08 20 or less N-10, NL10, NLT10 20 or less N-12, NL12, NLT12 20 or less N-15, NT15 30 or less N-18, NL18 30 or less N-21 30 or less N-24 30 or less A, B: Additional process impossible dimension. C: Processible depth of tapping or drilling a hole. DANGER ・The chuck can be modified only in the manufacturer permissible range. This will not only break the chuck but the chuck and work may fly out, which is dangerous. ・Provide a countermeasure against flying out (dwell pin, etc.) due to centrifugal force to the locator or the jig, and attach with bolts which have sufficient strength. The locator or the jig may fly out, and this is dangerous.
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Page 34: Maintenance And Inspection
6−2 Grease lubrication １．Position to lubricate ・Lubricate using a grease gun from the grease nipple on the body periphery part or each master jaw periphery part. Supply grease when the jaw is open. After lubrication, repeat opening and closing the jaw several times without gripping work. ２．Grease to use ・Use the designated grease specified in Table 11. If grease other than the designated grease is used, sufficient effect may not be obtained. Table 11 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. (North American region) product MOLYKOTE TP-42... -
Page 35: Disassembling
6−3 Disassembling Disassembling procedures Read the following disassembling procedures with reference to page 5. 1. Turn off the main power of the machine before starting work. 2. Loosen the jaw attaching bolt [15] and remove the soft jaw [4] and the T nut [5]. 3. Loosen the socket head cap screw (or machine screw) [14] and remove the cover [6]. 4. Remove the stop bolt [12]. 5. Loosen the set screw [16] and remove lead ball [11] (Save these parts carefully because they are small.). Loosen the draw tube [8] and remove it from the wedge plunger [2]. (4 and 5 : The draw tube is not provided.) 6. Remove the wedge plunger [2] to the body [1] rear side. 7. Remove the master jaw [3] to the outer periphery side of the chuck. 8. The draw screw [7] is assembled in the draw tube [8] to adjust the plunger position. Usually the draw screw may not disassemble. Read the following procedures if it is disassembled. Loosen the set screw [17] on the draw nut [9], and remove the draw nut [9] from the draw screw [7]. Save the steel ball [19] and the spring [10] carefully. Assembling procedures Read the following assembling procedures with reference to page 5. Assemble again while sufficiently coating the recommended grease in the reverse procedures of disassembling. At this time, pay sufficient attention so as not to make a mistake in the numbers of the body [1], master jaw [3], and the wedge plunger [2]. Read the following procedures when you assemble draw screw. (Refer to Fig.19) 1. Install the draw screw [7] to draw tube [8] (4 and 5 : Plunger [2]). 2. Put the spring [10] and the steel ball [19] in a hole of the draw tube [8] (4 and 5 : draw nut [9]). 3. Install the draw nut [9] to the draw screw [7]. 4. Slightly loosen the draw nut [9] from the tightened situation and adjust the clearance between the draw nut and draw tube [8] (4 and 5 : plunger [2]). Proper clearance: 0.05〜0.15. 5. Screw the set screw [17]. Sufficiently screw the set screw onto the draw screw [7] at the recommended torque of 1.3 〜1.4 times. 6. Stake the set screw to prevent loosing. 0.05〜0.15（Clearance） Staking Draw tube Set screw （4 or 5 ：Plunger) Draw screw... - Page 36 CAUTION ・Use an eyebolt or a hanging belt when attaching and detaching the chuck to and from the machine, as there is a danger of injury or damage if the chuck drops. Chuck size(inch) Eyebolt 4〜5 none 6〜10 12〜15 18〜24 WARNING ・Remove the eyebolt or the belt without fail after using. If the chuck is rotated with the eyebolt, etc., attached, they may fly out and this is dangerous. ・Disassemble and clean the chuck at least once every 6 months or every 100,000 strokes (once every 2 months or more for cutting cast metal). If cutting powder or other substances stagnate inside the chuck, it will lead to insufficient stroke and a drop in the gripping force, and this is dangerous as the work will fly out. Check each part carefully and replace any part that is worn or cracked. ・After inspection, apply sufficient grease in the designated areas and reassemble. ・After assembling, measure the gripping force according to the method on page 16, and check that the specified gripping force is obtained. ・If you stop the machine for a long period of time, remove the work from the machine. If you don't, the work can drop due to a drop in the hydraulic pressure or the cylinder can stop or malfunction.
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Page 37: 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 12 Defective Cause Countermeasure The chuck inside will break. Disassemble and replace the broken part. Disassemble, correct the seized part with oilstone, etc., or replace The chuck The sliding surface is seized. the part. does not Check the piping and the electric system, and if there is no operate. The cylinder is not operating. abnormality, disassemble and clean the cylinder. A large amount of cutting powder is inside. Disassemble and clean. Insufficient The draw bar loosened. Remove the draw bar and retighten it again. stroke of the jaw. Adjust so that the jaw is near the center of the stroke when The stroke of the jaw is insufficient. gripping the work. The gripping force is insufficient. Check that the correct hydraulic pressure is obtained. The forming diameter of the top jaw is not Form again based on the correct forming method. consistent with the work diameter. Calculate the cutting force and check that it is suitable for the The Work The cutting force is too large. specification of the chuck. slips. Supply grease from the grease nipple, and open and close the jaw Insufficient grease lubrication several times without gripping a work. The rotation speed is too high. Swinging occurs ... -
Page 38: 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. 8 . Attachment 8−1 Outline drawing of attachment Cylinder adapter Top jaw Draw bar Chuck Cylinder NC lathe Support Drain hose Flexible hose Use one with large inside diameter as possible Pressure Pump Pressure gauge adjusting screw Manual switching valve SOL. Line filter Solenoid valve Tank Return onto the oil surface Fig.20 ・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 drain hose is not kinked and the needle of the pressure gauge is easily read. -
Page 39: In The Case That The Back Plate Must Be Manufactured
DANGER ・When other actuators are operated by the same hydraulic pressure source as the cylinder for chuck, be sure that a pressure drop of the cylinder does not occur during use. A hydraulic pressure drop leads to a drop in the gripping force which could allow the work to fly out. ・ As to the drain hose ・ Use a transparent vinyl hose for visualization. ・ Provide a stream slope, without air pocket. This will ensure no back pressure. ・ The end of the hose is physically above the oil level. (Refer to Fig.20) ・ If the hydraulic oil stagnates inside the cylinder, oil leakage occurs, which may cause a fire. WARNING ・Install after removing the dust inside the pipe completely. ・Add a filter to the pressure supply line. If foreign matters gets inside the cylinder, this is dangerous since the rotation valve of the cylinder will seize, the hose will tear off, and the cylinder will rotate. This is also dangerous ... - Page 40 Table 13-2 Type Air cylinder D (min) N-04,NT04,NL04 AY1315R A-43 N-05,NT05 AY1315R A-34 N-06,NL06,NLT06 AY1720R A-151.5 N-08,NL08,NLT08 AY2225R A-182 N-10 AY2225R A-209 The dimension L in Fig.21 is determined from the distance A between the cylinder adapter and the back plate. (Example) In the combination of N-06, Y1020RE, and when A=800mm, the draw bar length L is to be L = A − 131.5 = 800 − 131.5 = 668.5mm. At the time of the screw process of the dimension C, the precision is to be JIS 6H and 6h, 6g matching the screw of the piston of the cylinder. Pay attention so that the thread parts on both ends and the inner periphery do not swing or become unbalanced.
- Page 41 D (min) ― ― Dimension A (spigot joint diameter) conforms to the DIN standard. DANGER ・Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, which is dangerous as the chuck or work will fly out. ・Use the bolts attached to the chuck, 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. Table 15 Bolt size Tightening torque Bolt size Tightening torque M 6 13 N ・ m 250 N ・...
- Page 42 ２．Production of draw bar Cylinder Cylinder adapter Chuck Width across flat Draw bar Clearance Fig.26 Fig.27 Table 17-1 Type Hydraulic cylinder D (min) N-06A05 NL06A05 Y1020R A-116.5 NLT06A5 N-08A05 NL08A05 Y1225R A-145 NLT08A5 N-10A06 Y1225R A-145 NL10A06 Y1530R A-145 NLT10A6 N-10A08 Y1225R A-171 NL10A08 Y1530R A-171 NLT10A8 N-12A06 Y1530R A-150 NLT12A6 Table 17-2 Type...
- Page 43 Hex key Set screw Lead ball Wedge plunger Draw tube Fig.28 ２．Attaching the draw bar to the cylinder ・Apply adhesive onto the screw part of the draw bar, and screw it into the piston rod of cylinder. At this time, refer to the instruction manual for the cylinder for tightening torque. NOTICE ・When attaching the draw bar to the cylinder, the stopper pin of the piston may break if tightened at the stroke middle position of the piston. In the case of a Y type cylinder, screw it in so that the piston rod is fully in. Follow the explanation of the instruction manual for the cylinder for other items about the cylinder. ・Use the cylinder that matched the stroke of the chuck. The cover is damaged if you use the cylinder that have longer stroke than the chuck, because the jaws move for a long distance. ３．Attach the cylinder to the spindle (or the cylinder adapter) ・Check the run-out of the cylinder, and if it is normal, attach the hydraulic pipe. ・Move 2 to 3 times at low pressure (0.4 MPa-0.5 MPa, 4 - 5 kgf/cm ) and set the piston at the forward end and turn off the power supply. CAUTION Chuck size(inch) Eyebolt...
- Page 44 ５．Attach the chuck matching to the attaching surface of the spindle (or the back plate). ・Turn the handle for connection to make a state that the chuck closely contacts the spindle attaching surface of the lathe. ・In the case of adjusting the centering of the chuck, lightly hit the body side face with a plastic hammer. ・Tighten the chuck attaching bolts evenly. At this time, tighten the bolts at the specified torque. DANGER ・Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, which is dangerous as the chuck or work will fly out. ・Use the bolts attached to the chuck, 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. Table 18 Bolt size Tightening torque Bolt size Tightening torque 13 N ・ m 250 N ・ m 33 N ・...
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Page 45: Other Information
9 . Other information 9−1 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 9−2 Information about markings of product Manufacturer's logo Type of Jaw No. top jaws F MAX：MAX PERMISSIBLE INPUT FORCE ΣS MAX：MAX STATIC GRIPPING FORCE Manufacturer's N MAX：MAX PERMISSIBLE SPEED address MASS：MASS Specifications Type MFG No. Jaw No. Stroke mark Fig.30 9−3 About disposal Ultimate disposal of this product should be handled according to all national laws and regulations. - Page 47 MEMO...
- Page 48 Kitagawa Corporation Kitagawa Global hand Company 77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan Tel.＋81-847-40-0561 Fax.＋81-847-45-8911 ■ JAPAN DOMESTIC 1-405-1,Kita-ku,Yosino-cho,Saitama-shi,Saitama,331-9634,Japan Tokyo office Tel.＋81-48-667-3469 Fax.＋81-48-663-4678 4-15-13,Yamatomachi,Wakabayashi-ku,Sendai-shi,Miyagi,984-0042,Japan Sendai office Tel.＋81-22-232-6732 Fax.＋81-22-232-6739 2-62,Kamitakabata,Nakagawa-ku,Nagoya-shi,Aichi,454-0873,Japan Nagoya office Tel.＋81-52-363-0371 Fax.＋81-52-362-0690 3-2-9,Kitakagaya,Suminoe-ku,Osaka-shi,Osaka,559-0011,Japan Osaka office Tel.＋81-6-6685-9065 Fax.＋81-6-6684-2025 77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan Hiroshima office Tel.＋81-847-40-0541 Fax.＋81-847-46-1721 7-6-39,Itazuke,Hakata-ku,Fukuoka-shi,Fukuoka,812-0888,Japan Kyushu office Tel.＋81-92-501-2102 Fax.＋81-92-501-2103 77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan Overseas office Tel.＋81-847-40-0526 Fax.＋81-847-45-8911 ■ OVERSEAS KITAGAWA-NORTHTECH INC.
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