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Be sure to read and understand this 本取扱説明書をよく読み, 内容を十分理解した instruction manual thoroughly before 上でこの製品を使用してください。 operating this product. この取扱説明書は大切に保管し, 製品の所有者 Please save this manual. When が変わった場合, この説明書も新しい所有者に ownership of this product is transferred, 手渡してください。 submit this manual to the new owner. 豊和工業株式会社 HOWA MACHINERY, LTD.
Table of contents Introduction Safety Information Safety Precautions 1. Construction and Operation ........4 1.1 Display Form ............ 4 1.2 Construction and Operation....... 4 2. Installation ..............5 2.1 Unpacking ............5 2.2 Accessories ............5 2.3 Preparations for Installation ....... 5 2.4 Stroke Control ............
Introduction 1. This instruction manual describes the crank type 3-jaw long jaw stroke power chuck H032M (standard model). 2. Please read this manual carefully and fully understand the procedures for installation, operation, inspection, and maintenance before operating the chuck. 3. Ignoring any instructions in this manual may result in a serious accident or machine damage, leading to injury to the operator or personnel near the machine.
Safety Precautions The following precautions apply to handling, maintenance, and operation of the chuck. Read and understand them carefully before use. DANGER Never operate the rotating cylinder selector valve while the spindle is rotating. Otherwise, the gripped work piece may come off and fly out. Never put any part of your body inside the spindle cover while the spindle is rotating.
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(supplied from Dow Corning Corporation) For all the chuck parts including consumables, place an order with Howa Machinery, Ltd. Howa shall not be liable for any accidents caused by use of parts not supplied from Howa. Any and all warranties are invalid unless only Howa’s genuine parts are used.
1. Construction and Operation 1.1 Model Coding The crank type long jaw stroke power chuck H032M are model coded as follows: H032M JIS-specified spindle nose No. No mark : Having a straight socket for installation of chuck. (standard model) : Including an adapter or a back-plate Spindle nose No.
Please refer to the section 6.6 “Accessories” for particulars. 2.3 Preparations for Installation Except the direct-mount chuck of H032M-A type, a chuck adapter is needed to install the chuck onto the lathe spindle. Contact us if you need information on how to design a chuck adapter.
2.5 Installing Procedure Fig.2 2.5.1 Before Installation After taking the chuck out of the package box, wipe off all anticorrosive oil clinging to it with a cloth permeated with cleaning oil. 2.5.2 Installing Chuck Adapter Install the chuck adapter on the spindle end face. Then the chuck installing socket (C) and datum face should be machined in place.
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Use extra care when operating the hydraulic or pneumatic circuit CAUTION during the chuck installation. If you actuate such circuits accidentally during chuck installation, you may be caught between the chuck body and the spindle or between the top jaw and the master jaw, resulting in injury. (6) Secure the chuck body to the chuck adapter using the chuck installing bolts provided as accessories.
For all the chuck parts including consumables, place an order with WARNING Howa Machinery, Ltd. Howa shall not be liable for any accidents caused by use of parts not supplied from Howa. Any and all warranties are invalid unless only Howa’s genuine parts are used.
When using the top jaws that are higher than the standard top jaws, WARNING lower the cylinder force in inverse proportion to the top jaw height. If the distance H (from the chuck front end face to the gripping position) is greater than the height X of the standard soft top jaws (dimension X in the following figure or in the table of dimensions), a force larger than the allowable value is applied to the top jaw installation bolts even when the...
Table 6 Bolt size Tightening torque (N-m) 57.9 Use exact torque for fastening bolts. WARNING If less torque is used than specified in Table 6 above, the bolts may loosen in the top jaws and/or the work piece could come off. If the torque is greater than that specified the master jaws and/or top jaws will deform and defective operation will result, leading to breakage and release of the top jaws and/or work piece.
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Do not grip near the end of the jaw stroke. WARNING Forged or molded work pieces have surface irregularity as far as they are not machined. The chuck may not be able to grip such a work piece in a stable state. Gripping a forged or molded work piece, not machined, near the end of the jaw stroke will cause insufficient gripping force, and the application of the tool to the work piece may cause the work piece to slip out of the jaws and fly off.
Remarks When machining a bar stock, keep in mind that the chuck may lose stable gripping force and the work piece may slip because a long work piece may vibrate and the top jaws cannot firmly grip a work piece with a smaller diameter. In such a case, secure a greater gripping length in the axial direction to improve gripping stability.
3.5.1 Permissible Cylinder Force The permissible cylinder force indicated in the specification table or catalogue is a force at which the chuck will not suffer damage, presuming those standard soft jaws or standard hardened jaws are used. This maximum force may be used as required, of course, but ordinarily long-term use under conditions of maximum force is not recommended.
3.6.1 Before Gripping Work piece Before beginning operations, check to be sure that the pneumatic WARNING or hydraulic pressure needed to operate the chuck is being supplied to the rotating cylinder. If not supplied or not sufficient, the work piece could slip out and fly off as the cutting starts, and may cause severe injury or death to the operator and/or bystanders.
3.6.3 During Cutting Operations In any of the following cases, the tool impact on initial cutting WARNING contact may result in an unexpected cutting force in excess of chuck work holding capacity: The back end of the work piece is away from the chuck’s stopper face.
4. Maintenance 4.1 Lubrication The most frequent cause of chuck failure is insufficient or improper lubrication. If lubrication is insufficient or if a non-specified lubricant is used, not only will wear be accelerated, the gripping force will be inadequate, with the possibility of the work piece coming off during the cutting operation.
Disassembling Procedure Remove the top jaws. Arrange the master jaws in the middle of jaw stroke. Remove the set screw on the backside of the chuck body, and then strike the fulcrum pin out with a pipe that has nearly the same diameter as that of the fulcrum pin. The crank levers becomes free in chuck body.
4.4 Parts List Parts Name Q'ty Parts Name Q'ty Chuck body Jaw nut Draw sleeve Spring Steel ball Draw screw Hex. socket head bolt Round nut Hex. socket head bolt Crank lever Grease nipple Fulcrum pin Grease nipple Master jaw Screw Top jaw Screw...
5. Troubleshooting When there are any troubles with the operation of the chuck, the following causes are likely. Please check these before contacting us for service. Trouble Possible cause Recommended remedy Chuck does Damaged parts on chuck. Disassemble and repair. not operate Seizure of sliding contact part.
6. Specifications 6.1 Specifications Series number H032M Specifications Jaw movement (Dia) Plunger stroke (Cylinder stroke) Recommended outside Max. chucking diameter for Min. standard soft jaws Max. Speed r/min 3600 3000 2400 2100 Max. input force 22.6 31.4 37.3 49.0 Clamping force at Max. input 19.6...
6.2 Dimensions Series number H032M Symbol Min. 104.8 133.4 133.4 171.4 M30×2 M45×2 M65×2 M72×2 Max. 31.5 Min. -3.5 Max. 39.8 53.8 67.3 73.3 Min. 23.8 33.8 46.3 48.3 Max. 37.5 Min. 13.5 Max. -21-...
6.3 Gripping Force The following graph shows the gripping force of the rotating chuck equipped with the standard soft jaws. 6.4 Standard Soft Jaws The following table shows the dimensions of standard soft jaws. Chuck size 85.5 31.5 40.5 14.5 17.5 13.5 15.5...
6.5 Allowable Machining Area of Chuck Body Tapped and/or pin holes necessary for mounting a stopper or rough guide may be additionally machined on the chuck body within the boundaries defined below. NOTE: The periphery of each additional hole should be at least 2 mm away from the boundary. The holes should be located and sized to maintain the chuck in balance.
6.6 Accessories The package box contains the accessories besides the chuck itself. Chuck size Q'ty Part name Hex. socket head bolt for mounting L=80 L=95 L=110 L=130 the chuck B=10 B=12 Hex. key spanner B=10 B=14 each Eyebolt Special wrench for ○...
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