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Technical Solution

Company Presentation:

Ningbo GongTie Precision Machinery Co., LTD. is a national high-tech enterprise, which integrates precise CNC lathes and industrial robots as a whole, specializes in precise CNC lathes, automatic integral-single CNC lathes, automatic production line. Bases on medium-small precise CNC lathes, sets up the machine automation as enterprise’ strategical core, targets to satisfy the market and the customer as the technique innovation’s motivation, scientifically and reasonably combines the precise CNC lathes with the machine unmanned together, sustainably improves the machine’s stability and practicability, becomes the domestic leading professional manufacturer and service supplier for precise CNC lathes and machines’ automation.

Established in 2006, with more than 100 employees, already got various of invention patents. GongTie is able to offer a complete engineering package from concept , design to manufacturing

The company’s diversity machine series is widely used in automotive parts, valve, bearing, electric application , instrument, sanitary and more other industries, can realize various processing technology like drilling, turning, milling, boring, tapping, grooving and so on. We have set up sales office at several place and perfect sales representative network. And we completely follow the ISO9000:2000 quality management system and security management system on the development and manufacturing, to guarantee the quality and safety during the customer’s application. In addition, we have built up a perfect after-sales service system, can in-time make feasible reaction for the customer’s any inquiries or problems。

The CNC machine from GongTie has below advantages:
-- broaden application range

-- high precise, reliable features, fine finish and stable processing.

-- save labor costs
-- competitive price with high quality assurance

The company mission:

●Continuous innovation

●Quality priority

●Customer focused

●Solution driven

With our accurate, reliable products and perfect service system, we have won the trust of many users, and gradually built up a good brand impression in the CNC lathes automation industry.


1. Products processing solution

 1) customer: *******;     2) product: FAN AIR FLORA PART;   3) material: 45#;   

 4) the product profile

Technical Solution

5) machining accuracy: completely follow up the customer’s drawing;

6) Work tool and fixture: precision spring collet .

7) The technique remarks: the program will set up the tools life-time management (customer pre-set up the q’ty of the machining products, when reach it, automatically warning, for reducing the products scraps and the tools damage.)

8) GONGTIE company will do the best to provide the technique guidance for CNC lathes and related suggestion of the products processing technology.

Technical Solution

the first CNC lathe process--- products fixture method and process proposal    (op10)

                           External  clamping  fixture 

 Technical Solution                                                 

               The red zone is machining area
processtoolsProcess speed(r/min)Traverse (mm/r)Cycle time(S)Altering time(s)
 top face, chamfer angle Technical Solution   T1  OD tool 2500 0.08- 0.1    ≈2.50.5
Groove cuttingTechnical Solution T2  groove tool20000.04≈4.00.5
Auto-loading/unloading system: gantry loader in shaft≈ 6.5 s
  Processing time     2.5+4.5+0.5+0.5=7.5 s
Total cycle time      7.5+6.5=14 s
The cycle time is simulated under the model ,there might be 10% tolerance comparing with the facts.
the second CNC lathe process--- products fixture method and process proposal    (op20)

                                       fixture from outside        

Technical Solution                                    

The red zone is machining area
processtoolsProcess speed(r/min)Traverse (mm/r)Cycle time(S)Altering time(s)
  side face, chamfer angle and ODTechnical Solution T1  OD tool25000.12 ≈13 s0.5
Auto-loading/unloading system: gantry loader in shaft6.5 s
Processing time  13+0.5 = 13.5 s13.5 s
Total cycle time13.5+6.5 = 20 s20 s
The cycle time is simulated under the model ,there might be 10% tolerance comparing with the facts.

9) Proposal CNC lathe:Q7-4B

    9.1)  CNC lathe: Precise linear guide-way CNC lathe flat bed : Q7

    9.2)  Auto-loading/unloading system: gantry loader in shaft

10) CNC lathe sketch:

    10.1)  Precise linear guide-way CNC lathe with flat bed and dovetail row of knives: Q7-4B

Technical Solution

10.2> feeding sketch :

Technical Solution

Sketch for the robot:

Technical Solution

Technical Solution

Stocking box sketching:

Technical Solution

Change- over head device:

Technical Solution

1. The overall size:

Technical Solution

2. Parameters, configuration and price:

   1) parameters: 

Main parametersUnitQ7

Processing capabilityMax. swing diametermmΦ285

Swing over cross slidemmφ96

Max. turning lengthmm300

Max. bar through-holemm26(35)

 SpindleWork piece clamping methodN/A6“Hydraulic chuck

Spindle speed rangerpm0~5000

Spindle nose sizeN/AA2-5

Spindle IDmm48

Rapid TraverseX-axis rapid traversem/min20

Z-axis rapid traversem/min20

   Axis StrokeX-axis travelmm320

Z-axis travelmm300

 AccuracyX\Z axis repeating postioning accuracymm0.002

MotorSpindle drive motorkW3..7/5.5
  OthersTool-holder typeN/A dovetail row of knives

Tool sizemm16

Number of toolspcs5

Cooling motorkW0.12

Required electric powerkVA8

Overall size(L*W*H)mm2450*1300*2450

Height from floor to spindle centermm≈1070

Net weightkg≈2000

Standard: Tool box, instruction book, operational manual, cooling system , lighting system, lubrication system, chips cleaner, hydraulic collet(chuck), foot switch 

Optional:  Program control blowing function, precision C axis dividing,  spindle head , automatic door, loading and unloading system, industrial robotic,  automatic bar feeder, receiving device for bar materials, automatic detection system, automatic cutter radius compensation system, high-pressure cooling system

2) Configuration and price

CNC lathe
2Servo motor/driveYASKAWA  incremental typeJAPAN2
3Spindle motorCTB 3.7 KWCHINA1
4Ball screw & linear guide-wayPMITAIWAN2,4
5Spindle bearingsNTN P4JAPAN5
6Spindle structureIndependent spindle with front three bearings and two afterBY GONGTIE1
7Ball screw supporting methodDouble supporting with pre-stretching structureBY GONGTIE1
8Hollow hydraulic rotary cylinderJIAHETAIWAN COMPONENTS1
10Electric cabinet with heat exchangerNO. 5TAIWAN COMPONENTS1
11Low voltage componentSCHNEIDERFRENCH1
12Clamping toolPrecision spring colletSHANGHAI ,CHINA1
13Tool-holder type dove tail blade row (16)BY GONGTIE1
14Water pumpStandard type TAIWAN1
1Chip conveyorPost typeCHINA1
Auto-loading/unloading system
No.KitBrand & original countryQTY.
1Beam kitGONGTIE1 set
2Beam linear guide-wayTaiwan PMI1set
3Parallel handJAPAN SMC1set
4Rotary cylinderJAPAN SMC1set
5Air cylinderJAPAN SMC1set
6Sensor/Magnetic switchJAPAN SMC1set
7 Gear wheel/rack(  slant gear )Taiwan1set
8Work-stocker system  (in shaft)CHINA1set
9Loading/unloading device(mechanical claws)GONGTIE1set
electrical system for gantry loader
1Servo motorInovance-china1set
2Servo systemInovance-china(bus type CNC system)1set
3Controller systemInovance-china1set
4Gear ReducerTaiwan1set

3. After-sales service

  1) after assembly, immediately carry out test and try-run on the CNC lathe and gantry loader.

  2) according to the problem feedback from customer by telephone or FAX, make the reaction within 12H.

  3) In maintenance guarantee period (one year), if the damage is not caused by operators, we offer free maintenance service, beyond the period, we offer relevant services with paid components. 

4. Attachments

Attached itemsQTY
Working instruction1 SET
Machine guarantee card1 SET
Electrics instruction1 SET
Machine inspection report1 SET
CNC system instruction1 SET
Basic tools1 SET

5. Lead time: 65 working days after signing contract

6. Total price:

Precise linear guide-way CNC lathe with flat bed , dovetail row of knives , gantry loader,  change-over head device ,SYNTEC controller

: Q7-4B         ******* RMB

Package +truck fee  *****RMB

Price: ********     RMB /SET

7. Period of validity:1 months

8. Price base: FOB  NINGBO

9. Payment term: 30% pre-pay, 70% before delivery

10. Price with the good packaging.

  • Mob: +86 180 5748 6168
  • Tel.: +86 180 5748 6168
  • Fax: +86 574 8809 5075
  • E-mail:
  • Skype: +86 18057486168
  • Add.: No.16,gaoya road, jiangshan science & technology zone,yinzhou,ningbo ,zhejiang ,CHINA
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