Compared with the traditional motor, linear motor main features: compact structure, low power loss, fast speed, high acceleration, high speed. So the linear motor in recent years has been more and more widely used. This article introduces you to the Tmmotion linear voice coil motor in the application of the assembly problem.
     Linear voice coil motor mechanical structure is relatively simple, but the assembly process is very strict. As the linear motor secondary structure of the permanent magnet has a strong static magnetic field and a considerable high iron ferromagnetic force, which for human health and safety have a direct impact, so the assembly process to consider how to ensure the accuracy of linear motor assembly, But also attach importance to personal safety.
     In accordance with the above requirements to develop a straight line motor assembly process: pre-assembly preparation → the saddle installed in the bed, install the saddle rail → pre-installed skateboard to adjust the accuracy of the machine → the secondary part of the core cooling installed in the bed saddle and leak → Install the sub-module core → Install the secondary part of the core magnetic cover → Install the primary part of the core cooler on the slide → Install the primary part of the core → Install the skateboard → Check the linear motor installation (manual) → Connect the Cooling and hydraulic lines → improve the ministry.
     As the linear motor assembly, disassembly is very difficult, it must be prepared before the assembly work. Before assembly, the catalog should be cataloged to collect the required tooling, cleaning parts, according to the drawings on the parts for testing. Assembly according to the linear motor assembly process.
     How to achieve linear motor safety assembly?
     As the linear motor secondary structure of the permanent magnet has a strong static magnetic field and quite high iron magnetic force, so the assembly process requires:
A. Magnetic material from the secondary part of the core distance must be guaranteed> 100mm.
B. Watches, magnetic materials (magnetic cards, floppy disks, etc.) to stay away from.
C. To install, repair, maintenance equipment to bring work gloves.
D. Persons with pacemakers should not work on this device.
E. The strong magnets can not be placed near the core of the secondary section.
     When assembling a linear motor, in order to respond, at least two high-strength, non-magnetic wedges (eg stainless steel flat shovels) should be prepared, a hammer for the separation of secondary parts
F. Before the assembly can be removed before the sub-core package.
G. Assemble at least 2 people during assembly.
H. Can never put the primary part of the core directly on the core structure of the core.
I. When using steel tools, gripping the tool and approaching the secondary part from the side.
J. Secondary parts of the core installed and then do other work, use more than 20mm thick non-metallic materials (such as wood) to cover it.
K. After the primary core and the secondary core have been mounted on the linear guide, it is necessary to prevent movement in the moving direction due to the magnetic force.
Use special installation tools and equipment.
    How is the linear motor installed?
As the linear motor disassembly more difficult, in order to ensure that no impurities, the parts before cleaning the parts clean. To ensure that the screw is not tightly installed, the screw hole to correct. As the primary and secondary parts of the core structure of the size of the core directly affect the primary part of the core attraction and feed force, in order not to weaken the linear motor function to ensure that the primary and secondary parts of the core after the installation of the gap between the 0.8 Mm, before the installation of the parts of the size of the chain to be corrected. In order to ensure the accuracy of linear motor installation, install the linear motor before the skateboard and the bed saddle preloaded, adjust the precision, then remove the skateboard, respectively, the installation of the primary and secondary core.
1. Assembly of the sub-sector core
A. Fix the secondary part to the saddle with screws. Place the combination distributor axially on the plug of the cooling profile and screw the combination dispenser screw. To prevent the cooling profile from distorting, do not tighten the screws. Install the other end of the combination of the dispenser, tighten the screws. Check whether the secondary core cooling system is leaking. Leakage when using a good cooling medium, to avoid the formation of linear motor components in the condensate, moisture.
B. Install the subordinate core. After each sub-sector core tightened, covered with a magnetic plate, and then install another piece of secondary structure core, to avoid damage caused by magnetic force. The subordinate core consists of four blocks in series, and the assembly must ensure that the letter "N (Arctic)" affixed to the secondary core support plate is in the same direction.
C. Install the secondary section core magnetic cover. First, the end of the secondary part of the core structure of the core cover fixed to the end of the core structure of the core block, the other end and the last piece of the secondary part of the core of the outer edge of about 45 ° angle from the upper positioning, out of the magnetic cover, And then the secondary part of the core magnetic cover down to align with the secondary part of the core. When the drop, the magnetic force can be felt that the cover was immediately released, and then "click" into the correct position. Check whether the position of the cover is correct, and then fix the other end of the secondary part of the core magnetic cover on the other end of the secondary part.
2. The installation of the primary department core
A. The primary part of the core precision cooling device, the primary part of the core installed in the skateboard.
B. Attach the removal / mounting device to the sides of the slide to ensure that the removal / mounting device is at the maximum limit position.
C. Place the septum on the core of the secondary section and place the slide on the saddle to ensure that the disassembly / mounting device is in reliable contact with the bed saddle, slowly loosening the screw so that the slide is slowly in contact with the saddle rail, Ensure that the threaded holes are aligned and fasten the slide to the rails with high strength screws.
D. Can not be directly on the sub-core structure core core.
E. After the secondary part core has been installed on the linear guide, it is necessary to prevent the magnetic force from moving in the moving direction.
   Assembly test
A. Check the linear motor cooling, hydraulic connector is connected, the wire connection is correct, the protection switch is installed reliably.
B. Linear motor for pressure, insulation test.
C. Connected to the coolant and hydraulic oil, manually move the skateboard, move to be uniform, friction is small, not allowed to jam phenomenon, to ensure that the entire trip can move smoothly. When moving the skateboard manually, the rhythmic force fluctuates due to the different motor structure, which does not indicate that the motor is assembled or installed incorrectly.
D. After the motor is energized, it will run at low speed, and after the operation is correct, it will gradually increase the speed. Do not use the machine's coolant or lubricant to cool the linear motor. Cooling medium can be used with water plus preservative or low viscosity oil.
E. The medium must be clean and filtered, with a maximum permissible particle size of 100 μm.
F. Under any environment, to prevent the formation of condensate in the linear motor components moisture, to choose a good cooling medium into the temperature, the general choice of the maximum temperature into the ambient temperature below 3 ℃. If the continuous feed force of the motor is 100%, the inflow temperature should be limited to 35 ° C.
G. The maximum temperature of the secondary part core can not exceed 60 ℃, otherwise the permanent magnet will be permanently demagnetized.
H. Maximum pressure of the cooling circuit: 10 bar.

    Kunshan Tongmao Electronics Co., Ltd. is a set of linear motor technology research and development, linear motor, voice coil motor, the company is located in Kunshan Tongmao Electric Co., Ltd. is a collection of linear motor technology research and development, linear motor, voice coil motor, Precision linear platform for the wisdom and sales as one of the manufacturers. We welcome you at any time. National Hotline: 400-007-7724.www.tmmotion.com/english/index.asp