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Welcome to QINGDAO C AND C INTERNATIONAL TRADE CO., LTD

QINGDAO C AND C INTERNATIONAL TRADE CO., LTD

FAQ

  • How to maintain the CNC machine?

    1.Maintenance related person

        a) Operators are responsible for the use, maintenance and basic upkeep of the equipment.

        b) Equipment maintenance personnel are responsible for the repair and necessary maintenance of equipment.

     

    2.Basic requirements for the use of CNC equipment

        a) CNC equipment requires avoiding places with humidity, excessive dust and corrosive gases.

        b) Avoid direct sunlight and other thermal radiation, and keep precision CNC equipment away from equipment with high vibration, such as punching machines and forging equipment.

        c) The operating temperature of the equipment should be controlled between 15 degrees and 35 degrees. The temperature during precision machining should be controlled at about 20 degrees, with strict control of temperature fluctuations.

        d) To avoid large power supply fluctuations (±10%) and possible instantaneous interference signals and other effects, CNC equipment generally use a dedicated line power supply (such as from the low-voltage distribution room to divide a separate way for CNC machine tools), additional voltage regulators, etc., can educe the impact of power supply quality and electrical interference.

         

    3.Daily machining accuracy maintenance

        a) After the machine is turned on, it must be preheated for about 10 minutes before processing; the preheating time should be extended for machines that are not used for a long time.

        b) Checking that the oil circuit is clear.

        c) Keep the machine dry and clean.

         

    4.Daily maintenance

        a) Daily cleaning of machine dust and chips: including machine control panel, spindle taper hole, tool carriage, tool magazine tool arm and tool bin, turret, flexible hose inside the machine, etc.

        b) Checking the level of lubricating oil to ensure machine lubrication.

        c) Check whether the coolant in the coolant tank is sufficient, add in time when the coolant is not sufficient.

        d) Check if the air pressure is normal.

        e) Check all signal lights, alarm warning lights are normal.

        f) Checking the oil pressure unit tube for leaks.

        g) Cleaning of the machine after daily work.

        h) Maintain a clean environment around the machine.

     

    5.Weekly Maintenance

        a) Cleaning of air screens of heat exchangers, cooling pumps, lube oil pump screens.

        b) Check if the tool bolt is loose and the tool handle is clean.

        c) Check if the mechanical origin is offset.

        d) If there is an oil cooler check the oil cooler oil, such as below the scale line please refill the oil cooler oil in time.

        e) Clean the impurities and water in the compressed gas, check the oil volume in the oil mist separator, check whether the solenoid valve of each circuit is working normally, check the sealing in the pneumatic system, because the condition of the air circuit system directly affects the knife change and lubrication system.

        f) Prevent dust and dirt from entering the inside of the CNC device. In the air of the machine room will generally have oil mist, dust and even metal powder, once they fall on the circuit board or electronic devices within the CNC system, it is easy to cause a drop in insulation resistance between the elements, and even lead to damage to components and circuit boards.

     

    6. Monthly Maintenance

        a) Check shaft track lubrication, track surface must ensure good lubrication.

        b) Check and clean limit switches.

        c) Check that the indication and warning nameplates on the machine are clear.

     

    7. Semi-Annual Maintenance

        a) Dismantle the shaft chip guard, clean the shaft oil pipe joint, ball lead screw, limit switch, and test whether      they are normal.

        b) Check whether the servo motor of each spindle is running normally and whether there is any abnormal sound.

        c) Replace hydraulic unit oil and tool magazine reduction mechanism oil.

        d) Clean the dust in the electrical box (make sure the machine is off).

        e) Fully check whether each contact, connector, socket and switch are normal.

        f) Check if all keys are normal.

        g) Check and adjust the mechanical level.

        h) Clean the cutting water tank and replace the cutting fluid.

     

     8. Annual professional maintenance or repair

        a) Professional maintenance or repair should be carried out by professional engineers. Please ask your dealer for assistance.


  • What about the quality and standard of Chinese machine tools?

    As the machine tool industry standards and quality construction work continues to deepen, the industry in 2020 to make breakthroughs and progress in the upgrading of standards and quality improvement. In January 2020, ISO10791-7:2020 "Test conditions for machining centers - Part7: Accuracy of finished test pieces", an international standard revised by China, was approved by the International Organization for Standardization (ISO) and formally published. In May 2020, the "CNC machine tool interconnection communication protocol standard (NC-Link) and test verification project" organized by the China Machine Tool Industry Association (CMTIA) was accepted by the association. "In September 2020, the China Machine Tool Industry Association group standard "vertical machining center product quality evaluation specification " entered the test verification phase, another four group standards included in the 2020 Association group standards development plan.


  • Why choose our company's products?

        Firstly, most of the basic spare parts of our company's products are produced in China, except for some CNC machines with CNC systems that also need to cooperate with companies in other regions, so we have high efficiency in producing machine tools. 

        Secondly, China has effectively controlled the global epidemic and the import and export has been restored, so we have a strong supply capacity. Also, we accept multiple payment methods, which can make your payment more convenient. Besides, we supply 12 months free warranty for Online Support, Video Technical Support that covers all the series of CNC Forging Machine, CNC Rotary Transfer Machine, CNC Turning Machine, and VMC Machining Center. Engineers Available to paid overseas service Machinery is available as well, which greatly protect your experience.


  • Difference between CNC and VMC
    • CNC has two axes x and z, while VMC has three axes x, y and z.

    • When using CNC machines, we need to change tools manually to fit various workpieces, but VMC machines can change tool heads automatically using their own ATC arm.

    • VMC machines are more accurate than CNC machines and more expensive.

    • CNC mainly used for turning inner and outer diameter whereas VMC mainly used for milling end and milling face.

    • The geometric offsets in the CNC system are the z-axis and x-axis, and the offsets in the VMC machine are z-axis only.

    • The tool is rotating in the VMC, but not in the CNC.


    Link to our CNC Rotary Transfer Machine 

    Link to our VMC Machining center.


  • Why choose an operating system made in China?

        After more than a decade of technical development, the gap between China's domestic operating system and Siemens or Mitsubishi's operating system has been very small, and the domestic operating system has the ability to provide multiple languages. With the domestic machine, which can make the purchase cost of the machine further reduced, thus making the investment cost greatly reduced.


  • How to choose the right equipment?

    There are two ways to choose the right equipment.


    1. For those who want to replace the machine, the best way is to know what kind of products most customers need and choose the machine suitable for processing this range to ensure the maximum utilization of the machine and maximize the profit.


    2. For users who choose a machine for the first time, they can choose the right range of machines according to their own plans. If you do not have a plan, you can first understand the largest market demand, or supply gap products, so as to choose the right processing machine.


  • Why is the vertical rotary transfer machine more popular with users?

    The vertical rotary transfer machine has the following advantages.

    1、 Good chip discharge ability, chips and scraps will be concentrated in the bottom discharge

    2、 Easy installation and maintenance

    3、 Small footprint compared to horizontal machines

    4、 Convenient for personnel to work

    5、 The cost of the machine is relatively low


  • Why add rotary table 5th axis to CNC milling machine?

    With the addition of a fifth axis, the CNC milling machine becomes a true machining center, allowing the ordinary CNC milling machine to perform more, machining holes in multiple directions.