Bochi Machine Tool Group Co. CS6140 Series Operator's Manual
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Bochi Machine Tool Group Co. CS6140 Series Operator's Manual

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CS6140 (CS16") Series Lathe
CS6140B (CS16") Series Lathe
Operator' s Manual
Bochi Machine Tool Group Co.,Ltd.
Baoji Zhongcheng Machine Tool Co.,Ltd.
The People' s Republic of China

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Summary of Contents for Bochi Machine Tool Group Co. CS6140 Series

  • Page 1 CS6140 (CS16″) Series Lathe CS6140B (CS16″) Series Lathe Operator’ s Manual Bochi Machine Tool Group Co.,Ltd. Baoji Zhongcheng Machine Tool Co.,Ltd. The People’ s Republic of China...
  • Page 2 Notes 1. CS6140 (CS16” ) series lathes include the following specifications: CS6140 (CS16” ) CS6240 (CS16” G) CS6150 (CS20” ) CS6250 (CS20” G) CS6166 (CS26” ) CS6266 (CS26” G) 2. CS6140B (CS16B” ) series lathe include the following specifications: CS6140B (CS16” B) CS6240B (CS16”...

  • Page 3: Table Of Contents

    Table of contents Safety Instructions……………… … … … … … … … … … … … … … … … … … … … … … … … … … … 1-1 Application of machine… … … … … … … … … … … … … … … … … … … … … … … … … … … … … … ..2-1 Technical data……...

  • Page 4: Safety Instructions

    CS6140, CS6140B Series Turning Machine Instructions 1 Safety Instructions 1.1 General Safety Rules Operator must read the instructions carefully before operating the machine, and the manager of safety department should assure the operator knows the requirements well. 1）The operation, maintenance and repair of the machine must be done by qualified persons who have been trained the ability to forecast the potential risks.
  • Page 5 CS6140, CS6140B Series Turning Machine Instructions when operating. 18）The machine was inspected carefully before shipment from factory. Its noise emission is not higher than 81dB. Wear suitable personal protective equipment when necessary, for instance, wear hearing protection to reduce the risk of induced hearing loss. 19）Provide adequate light around the machine, and keep the perimeter around the machine dry, clean and in good order.
  • Page 6 CS6140, CS6140B Series Turning Machine Instructions 1.2 Additional Safety Rules for machine WARNING! When using electric tools basic safety precautions should always be followed to reduce the risk of fire, electrical shock and personal injury including the following: Read all these instructions before attempting to operate this product and save these instructions. 1) Operating speed of spindle should not exceed permissible speed of chuck (See Operator’...
  • Page 7 CS6140, CS6140B Series Turning Machine Instructions this may result in considerable danger to the user. 19) When the machine is used outdoor, use only extension cords intended for outdoor use. 20) Recommend to use rust preventive coolant. Important: Coolant must be used in correct ways. Care not to spill it into eyes or onto skin.
  • Page 8 CS6140, CS6140B Series Turning Machine Instructions (1). The operator must be trained for safety and operation before using the machine. (2). Be sure to disconnect power supply before making some adjustment and performing service.. (3). Always wear gloves when handling tools or cutters. For work-piece guiding the use of: (1).
  • Page 9 CS6140, CS6140B Series Turning Machine Instructions main switch of the distribution board. In addition, turn off the power switch supplying power from the plant to the machine. Proceed with checks and maintenance only upon confirmation that the power has indeed been cut off. If possible, the power supply should be locked in the off-position during checks and maintenance, or else signs should be posted warning that the maintenance is being performed and no operation is permitted.
  • Page 10 CS6140, CS6140B Series Turning Machine Instructions External power cable should be correctly connected to terminals marked by this sign. Do not operate during turning of spindle.

  • Page 11: Foot Brake

    CS6140, CS6140B Series Turning Machine Instructions 2 Application of machine 2.1 This lathe in series can perform many operations, such as internal and external turning, taper turning, facing, threading of metric, module and DP threads, drilling, boring and groove broaching. 2.2 Gap-bed lathe, additionally, can machine all kinds of flat stocks and those in irregular shapes.

  • Page 12: Technical Data

    CS6140, CS6140B Series Turning machine Instructions 3 Technical data Table 3-1 Technical data CS6140 CS16" CS6150 CS20" CS6166 CS26" Model CS6140B CS16"B CS6150B CS20"B CS6166B CS26"B Data CS6240 CS16"G CS6250 CS20"G CS6266 CS26"G Item CS6240B CS16"GB CS6250B CS20"GB CS6266B CS26"GB Max.
  • Page 13 CS6140, CS6140B Series Turning machine Instructions CS6140 CS16" CS6150 CS20" CS6166 CS26" Model CS6140B CS16"B CS6150B CS20"B CS6166B CS26"B Data CS6240 CS16"G CS6250 CS20"G CS6266 CS26"G Item CS6240B CS16"GB CS6250B CS20"GB CS6266B CS26"GB Max. travel of compound rest 145 (5 3/4") Max.

  • Page 14: Machine Drive System

    CS6140, CS6140B Series Turning machine Instructions 4 Machine drive system 4.1 Tables and diagrams Fig.4-1 shows the machine’ s drive system. Table 4-1 lists all the metric parts while Table 4-2 lists all the inch parts. Every bearing in drive system is listed in Table 4-3 and their positions are illustrated in Fig. 4-2.
  • Page 15 CS6140, CS6140B Series Turning machine Instructions...
  • Page 16 CS6140, CS6140B Series Turning machine Instructions...
  • Page 17 CS6140, CS6140B Series Turning machine Instructions Table 4-1 List of metric drive parts Position Part No.of teeth Module or Helix / profile Heat Name Material change ratio or starts pitch angle treat-ment or start dir. 02081 02082 02083 02084 40Cr 02085 02086 02106...
  • Page 18 CS6140, CS6140B Series Turning machine Instructions To continue from the above table 4-1 Position Heat No.of teeth Module Helix / profile Name Part No. Material change ratio treat- or starts or pitch angle or start dir. ment 08042 Nylon MC 08043 Change /2.25...
  • Page 19 CS6140, CS6140B Series Turning machine Instructions To continue from the above table 4-1 Position Helix / Heat Part No.of teeth Module or Name change ratio profile Material treat- or starts pitch or start dir. angle ment 06061 40Cr 20° 06062 06063 GCr15 06057...
  • Page 20 CS6140, CS6140B Series Turning machine Instructions Table 4-2 List of inch drive parts No.of Position Heat Part Module or Helix / profile Name Material teeth or change ratio treat- pitch angle starts or start dir. ment 08042Y Change 08043Y 1.5/2.25 20°...
  • Page 21 CS6140, CS6140B Series Turning machine Instructions Table 4-3 Bearing location Type Specification Qty. Number on diagram 44，45 7000106 35×55×9 1，8，14，15，16，17，31，37，40，41 25×47×12 30×55×13 29，30，33，34，35，36，38，39，46 17×40×12 13，24，32 25×52×15 12，18，19 40×80×18 17×47×14 20×52×15 26，20，10 25×62×17 21，11 30×72×19 9，5 35×80×21 40×90×23 D119 95×145×24 23(B series) 1D3182120 100×150×37 6(B series)

  • Page 22: Machine Operation

    CS6140, CS6140B Series Turning machine Instructions 5 Machine operation 5.1 Controls Fig.5-1 shows the location and function of cont rols on machine. 5.2 Method 5.2.1 Drive system Different spindle speeds are available by setting spindle speed shifting levers (8) and (10). For CS6266B lathe, different spindle speeds are available by setting spindle speed shifting levers (2) and (3).
  • Page 23 CS6140, CS6140B Series Turning machine Instructions c) Pitch and feed control knob (9) is used to change pitch and feed in an order from 1 to 15 as indicated on the data plate. For CS6266B lathe, pitch and feed control knob (6) is used to change pitch and feed in an order from 1 to 15 as indicated on the data plate.
  • Page 24 CS6140, CS6140B Series Turning machine Instructions (1) Coolant supply ON/OFF button (14) Cross slide handle (2) Emergency stop button (15) Tool post lever (3) Main motor start button (16) Work lamp switch (4) Power switch (17) Main motor control button (5) End cover lever (18) Half nut lever (6) Feed selector lever...
  • Page 25 CS6140, CS6140B Series Turning machine Instructions (1) Feed selector lever (13) Feed axis selector and rapid traverse button (2) Spindle speed shifting lever (14) Mechanical feed stop selection lever (3) Spindle speed shifting lever (15) Tailstock handwheel (4) End cover lever (16) Tailstock clamping lever (5) Thread selector (17) Tailstock quill speed control knob...
  • Page 26 CS6140, CS6140B Series Turning machine Instructions Table 5-1 Spindle speeds Lever Permissible Spindle speeds r/min Drive Times position load Weak efficien enlarg- Calculated Output Max. Norm point power torque N· m 9.06 11.4 11.6 14.2 14.4 17.8 18.1 Gear 13 0.773 1400 16:1...
  • Page 27 CS6140, CS6140B Series Turning machine Instructions...
  • Page 28 CS6140, CS6140B Series Turning machine Instructions...
  • Page 29 CS6140, CS6140B Series Turning machine Instructions...

  • Page 30: Electrical Part Of The Machine

    CS6140, CS6140B Series Turning machine Instructions 6 Electrical part of the machine 6.1 Preparation before applying power source After installation, following checks must be taken to guarantee safe operation. 1) Observation check. Open the door of cabinet and make sure that no element inside is damaged. Make sure that every connector and wires are connected firmly.
  • Page 31 CS6140, CS6140B Series Turning machine Instructions Fig.6-1a Location of electrical parts...
  • Page 32 CS6140, CS6140B Series Turning machine Instructions Fig.6-1b Location of electrical parts of CS6266B...
  • Page 33 CS6140, CS6140B Series Turning machine Instructions Fig. 6-2a Electric schematic diagram (1)
  • Page 34 CS6140, CS6140B Series Turning machine Instructions Fig. 6-2a Electric schematic diagram (2)
  • Page 35 CS6140, CS6140B Series Turning machine Instructions Fig. 6-2b Electric schematic diagram of CS6266B (1)
  • Page 36 CS6140, CS6140B Series Turning machine Instructions Fig. 6-2b Electric schematic diagram of CS6266B (2)
  • Page 37 CS6140, CS6140B Series Turning machine Instructions Fig. 6-3a Electric connection diagram...
  • Page 38 CS6140, CS6140B Series Turning machine Instructions Fig. 6-3b Electric connection diagram of CS6266B...
  • Page 39 CS6140, CS6140B Series Turning machine Instructions Table 6-1 List of electrical parts Code Name Specification Maker Remark 3-pole Ue=660V～ Beijing Machine Tool Power switch Ie=40A Switchgear Co., Ltd. Ue=380V～ 3～380V 3～220V Suzhou Stone Electrical Ue=500V～ Fuse 3～420V/660V Appliance Factory 3-pole Ue=380V～ Coil 1～50/60Hz 220V/24V/110V 3～380V...
  • Page 40 CS6140, CS6140B Series Turning machine Instructions Code Name Specification Maker Remark Current/rated 250W motor 2.5～4A 3～220V Thermal relay 1～1.6A 3～380V/440V 0.63～1A 3～500V /660V Current/rated 300W motor 2.5～4A 3～220V Thermal relay 1.6～2.5A 3～380V/400V 1～1.6A 3～415V /500V Tianshui 213 Electrical 0.63～1A 3～575V /660V Apparatus Co., Ltd.

  • Page 41: Lubrication

    CS6140, CS6140B Series Turning machine Instructions 7 Lubrication Fig. 7-1 is machine lubrication chart. Machine lubricant CBK68 specified in GB/T 7632— 1987 is used as lubricant. Ｃｈａｎｇｅ（ｆｉｌｌ）　ｏｉｌ　ｅｖｅｒｙ　５０　ｄａｙｓ Ｒｏｔａｔｅ　ｏｎｅ　ｔｕｒｎ　ｅｖｅｒｙ　ｓｈｉｆｔ Ｆｉｌｌ　ｏｉｌ　ｅｖｅｒｙ　ｓｈｉｆｔ ３０ ３０ ３０ Oil sight glass Hand pump Drain hole ２ ３０...
  • Page 42 CS6140, CS6140B Series Turning machine Instructions Feeding case lubrication Parts in feeding case are drop lubricated via some strings of wool soaked with oil stored in oil path in the feeding case (Fig.7-3). Waste oil must be drained off the case according to the indicated mark of the oil sight glass after a period of time.
  • Page 43 CS6140, CS6140B Series Turning machine Instructions Other oil sites Lead screw, rod and neck of operating rod are drop lubricated by some strings of wool. Oil is stored in the basin of the rear bracket. The shaft and sleeve of idle pulley in change gears box are greased with No.2 calcium base grease that is pressed into by the plug screw.

  • Page 44: Coolant Unit

    CS6140, CS6140B Series Turning machine Instructions 8 Coolant unit Coolant stored somewhere in machine or middle support of machine is pumped up by a three-phase pump AYB-50. Flow of the coolant is regulated with a faucet on the coolant pipe.

  • Page 45: Lifting, Installation And Test Operation

    CS6140, CS6140B Series Turning machine Instructions 9 Lifting, installation and test operation 9.1 Hoisting When hoisting a crated machine, tie and pass wire ropes per symbols painted on crate. Handle the machine carefully to avoid any bumps or shocks. Keep it up-right and not tilting. Avoid placing the machine over sharp objects.
  • Page 46 CS6140, CS6140B Series Turning machine Instructions Power inlet φ1/2” Spindle axis Spindle axis Max.work length 1000 1500 2000 2500 3000 1125 1625 855+460+810 1016+460+1139 1275+460+1395 1305 1555 2055 1285+1270 1446+4599 1705+1855 Fig.9-1 Lifting and foundation plan...

  • Page 47: Maintenance And Care

    CS6140, CS6140B Series Turning machine Instructions 10 Maintenance and care 10.1 Lubrication In order to keep good operation and reduce wear, all running and sliding parts on the machine must be properly lubricated periodically. So pay special attention to the following points. a) Fill clean oil at regular intervals according to the lubrication chart.
  • Page 48 CS6140, CS6140B Series Turning machine Instructions 10-2...

  • Page 49: Adjustment And Structure

    CS6140, CS6140B Series Turning machine Instructions 11 Adjustment and structure 11.1 Machine bed The main motor and coolant pump are located in the machine front support and back support respectively. Coolant pump is located in the middle support for a machine over 2 meters. Electric switchboard is located in the window at rear side of the machine.
  • Page 50 CS6140, CS6140B Series Turning machine Instructions spindle fails to come to a dead stop the brake band needs to be tightened with the adjusting nuts. Care not to twist the band. See Fig. 11-3. Ａｄｊｕｓｔｉｎｇ　ｎｕｔ　２ Ａｄｊｕｓｔｉｎｇ　ｎｕｔ　１ Fig. 11-3 Brake band adjustment diagram The spindle is supported on three bearings of which the front and middle bearings offer main support and rear bearing offers assistant support.
  • Page 51 CS6140, CS6140B Series Turning machine Instructions 11-3...
  • Page 52 CS6140, CS6140B Series Turning machine Instructions Ｃｈａｉｎ Ｔｅｎｓｉｏｎ　ｗｈｅｅｌ Ａｄｊｕｓｔｉｎｇ　ｎｕｔ Fig. 11-5 Chain tension adjustment diagram 11.3 Tailstock A stop dog (6) fixed in the taper hole of the tailstock is to prevent the tool held from rotating. The tailstock can move crosswise on the single-direction ways.
  • Page 53 CS6140, CS6140B Series Turning machine Instructions Fig. 11-6 Tailstock adjustment diagram 11.4 Carriage The cross slide is driven by the split nut which moves with rotation of lead screw and is used to eliminates transmission clearance by adjusting the pith diameter fit. When adjusting loosen the stop screw first and then adjust screw till the clearance is removed.
  • Page 54 CS6140, CS6140B Series Turning machine Instructions ３ ２ １ Fig.11-7 Cross slide screw nut adjustment diagram 11.5 Apron The apron controls feeding movements of carriage. Drive from the rod is transmitted to the apron, which in turn drives the carriage to move longitudinally or crosswise by means of safety clutch, worm and transmission gears. In order to make it possible for the carriage to perform rapid traverse at any time the worm is fixed with a one-way overrunning clutch that overpasses the drive from the rod when the rapid traverse motor is driving the worm in a selected direction.
  • Page 55 CS6140, CS6140B Series Turning machine Instructions must be adjusted with nut (1). See Fig. 11-9. １ ２ ３ Fig.11-9 Screw shaft anti-thrust bearing adjustment diagram 11.7 Change gearbox Multiple threads of 2,3,4,5,6,10,12,15,20,30,60 are cut on the machine thread by thread without having to change gears.
  • Page 56 CS6140, CS6140B Series Turning machine Instructions CS6140 series CS6150 series 19 tpi 11 1/2 tpi Fig.11-10a Diagram of engagement of change gears 11-8...
  • Page 57 Fig. 11-10b Engagement of change gears of CS6266B 11.8 Chuck, Driving plate and Spindle nose 11.8.1 Chuck, driving plate and spindle nose of CS6140 series Chuck or driving plate is mounted and connected onto the spindle by a short taper flange. When mounted 4 nuts (1) should be tightened equably.
  • Page 58 CS6140, CS6140B Series Turning machine Instructions When removing the chuck or driving plate from the spindle nose, loosen nut (1) and 2 screws (2), and keep rotating retainer ring (3). No matter whether chuck or driving plate is used 2 screws (2) should be tightened completely. Otherwise they may make noise during spindle rotation.
  • Page 59 CS6140, CS6140B Series Turning machine Instructions MT No.6 Taper 1:4 Fig. 11-11b Structure of spindle nose ISO702/Ⅲ No.6 Graduation mark 1 Graduation mark 2 Graduation mark 3 Fig. 11-12a Mounting of chuck or driving plate onto spindle ISO702/Ⅱ No.8 11-11...
  • Page 60 CS6140, CS6140B Series Turning machine Instructions Fig. 11-12b Structure of spindle nose ISO702/Ⅱ No.8 11-12...

  • Page 61: Wear Parts Of The Machine And Their Machining Diagrams

    CS6140, CS6140B Series Turning machine Instructions 12 Wear parts of the machine and their machining diagrams Table 12-1 List of Wear Parts Heat treatment Part No. Name Material Remark 02041 Bushing ZcuSn10Pb1 02136 Lever Local G48 Friction plate 02192 S0.5-C60 Friction plate 02193 S0.5-C60...
  • Page 62 CS6140, CS6140B Series Turning machine Instructions Unless otherwise specified Break sharp edges Part No.: 02041 Name : Bushing Material: ZCuSn10Pb1 Quantity: 2 12-2...
  • Page 63 CS6140, CS6140B Series Turning machine Instructions Part No.：02136 Name：Lever Material：45 Quantity：1 Sand blast Part No.: 02192 Name : Friction plate Material: Quantity: 14 12-3...
  • Page 64 CS6140, CS6140B Series Turning machine Instructions Part No.: 02193 Sand blast Name : Friction plate Material: Quantity: 16 Unless otherwise specified Part No.: 02194 Name : Friction plate Material: 65Mn Quantity: 1 12-4...
  • Page 65 CS6140, CS6140B Series Turning machine Instructions Unless otherwise specified Part No.: 02211 Gernerated radius = 16. 95 Name : Outer rotor of trochoid pump Material: Power metallurgy Quantity: Unless otherwise specified Part No.: 02212 Gernerated radius = 16. 95 Name : Inner rotor of trochoid pump Material: Power metallurgy Quantity: 1...
  • Page 66 CS6140, CS6140B Series Turning machine Instructions Cut and leave a straight Part No.: 02231 smooth edge Name : Brake friction plate Material: Iron sand cancas Quantity: 1 Unless otherwise specified Ａｘｉａｌ　ｐｒｏｆｉｌｅ　ａｎｇｌｅ Ｗｏｒｍ　ｔｙｐｅ Ａｒｃｈｉｍｅｄｅｓ ２０° ｏｆ　ｗｏｒｍ　αｓ Ａｘｉａｌ　ｍｏｄｕｌｕｓ　ｏｆ Ｔｅｅｔｈ　ｎｕｍｂｅｒ　ｏｆ ２６ ２．５ ｗｏｒｍ　ｍｓ ｗｏｒｍｗｈｅｅｌ　Ｚ２...
  • Page 67 CS6140, CS6140B Series Turning machine Instructions Unless otherwise specified Part No.: 05011(metric) Ｓｉｚｅ 05011Y(inch) Ｔｙｐｅ Ｂ Name : Ａ Material: ZCuSn10Pb1 Ｍｅｔｒｉｃ ２．５ ５ Quantity: 1 Ｉｎｃｈ ５．０８ ２．５４ 12-7...
  • Page 68 CS6140, CS6140B Series Turning machine Instructions Unless otherwise specified. Machine when assembling. Part No. 06022(metric) 06022Y(inch) T40x12-8(metric) Name Split nut T40x12.7-8(inch) Material ZCuSn10Pb1 Qty. (metric) A=6.35 (inch) Unless otherwise specified. Part No. 08011 Name Splined bush Material ZCuSn10Pb1 Qty. 12-8...
  • Page 69 CS6140, CS6140B Series Turning machine Instructions Code GB83-88 Surface Speci. M16x40 oxidization Name Screw Material Qty. Unless otherwise specified. MT No.5 Speci. MT No.5 Heat treatment C58 Name Center Material T8 Qty. 12-9...

  • Page 70: Standard Accessories, Tools And Optional Accessories

    CS6140, CS6140B Series Turning machine Instructions 13 Standard accessories, tools and optional accessories Table.13-1 Standard accessories Part No. Name Specification Qty. Remarks 09100 3-jaw chuck and adapter ? 250/? 315 1 set For CS6140/CS6266B lathes 09100A 3-jaw chuck and adapter ? 250 1 set For CS6266B lathes...

  • Page 71: Taper Turning Attachment

    CS6140, CS6140B Series Turning machine Instructions Super-giant steady 10300 ? 120-? 260 1 set For CS6266B lathes rest 16000 Full-length foot brake 750/1000/1500/2000 1 set 17000 Long. feed auto stop 1 set 17000 Cross feed auto stop 1 set Digital readout 1 set Crosswise coordinate 09700...
  • Page 72 The spindle is unable to re-start unless the starting lever (10) is set to NEUTRAL position. 14.3 Electric unit Fig. 6-2a is electric schematic diagram of CS6140 series equipped with foot brake and Fig. 6-3a is electric connection diagram. Fig. 6 -2b is electric schematic diagram of CS6266B and Fig. 6-3b is electric connection diagram of CS6266B.
  • Page 73 CS6140, CS6140B Series Turning machine Instructions 14.5 Easy-worn parts See table 14-1 for easy-worn parts. Following is a diagram of machining the easy-worn parts.（B16008、B16010） Table 14-1 List of easy-worn parts Draw No. Name Material Heat treatment Qty. Remark B16008 Steel band 65Mn B16010 Braking band...
  • Page 74 CS6140, CS6140B Series Turning machine Instructions Note: Operator’ s panel of CS6140 series lathe is located on Open in K direction. change gear cover. That of CS6266B is located on headstock. Fig.14-1 Structure of foot brake 1 Emergency stop, spindle start...
  • Page 75 CS6140, CS6140B Series Turning machine Instructions 15 Taper turning attachment 15.1 Application This attachment is designed for taper turning and taper pipe threading. It is a special accessory of CS6140 series lathe produced in our factory. 15.2 Main specifications Max. taper turning length：220mm Swivel angle：±12º...
  • Page 76 CS6140, CS6140B Series Turning machine Instructions saddle (2) with 2-M6 screws and 2-10 taper pins. Bracket (9) is fastened to machine bed (10) with taper pins. When operating, I - shaped sliding block (3) moves along plate (4) and sliding slot (5) moves along scale (6) that is connected with graduation plate (7) with taper pins.
  • Page 77 16 Mechanical Feed Stop The machine is designed with a mechanical feed stop, which automatically stops the longitudinal and crosswise feed motion of carriage at a desired position. During feeding, the carriage stops at the position where a dog is pre-set. That is, the lever located in apron, once come into contact with the dog will disengage the jaw clutch mounted on worm shaft in apron.

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