We all know that PCBA=PCB Assembled=PCB+components+SMT+firmware+test, SMT (Surface Assembly Technology of electronic circuits) is a key link in the whole process.

With the upgrading of technology and the diverse needs of terminal applications, electronic components are becoming more and more miniaturized and precise, and the requirements for SMT have become higher and higher.

To attach electronic components to the circuit board quickly, accurately and without loss, a high-speed, high-precision SMT placement machine is particularly important.
The placement accuracy and speed of the placement machine mainly depend on the accuracy and speed of the motor on the placement head.
On the placement head, the motor needs to realize two degrees of freedom of linear motion and rotation to meet the placement requirements. At present, most manufacturers on the market use "rotary servo motor + screw rod" to achieve this.

The problem of "straight line + rotation" is solved, and the "side effects" also follow.
The solution of "rotary servo motor + screw" makes the whole placement head bulky and takes up a lot of space. The acceleration usually can only reach 10-20m/s², and the precision is difficult to reach the micron level.

Goal Tech linear rotary motor subverts the traditional solution, and can realize "linear + rotary" bidirectional actuation at the same time, with the performance characteristics of "high speed, high frequency, high response".
It adopts an integrated compact structure design, the size is only the size of a pen, 85mm*130mm*20mm, which greatly saves the internal space.

At the same time, Goal Tech linear rotary motor also has the following characteristics, which can meet the strict requirements of SMT placement machine in motion control:


Power Control

Soft landing function (within +/- 3g force control and stable precision), contact with light force, so that the machine will not damage the chip or leave traces on the chip, improve production capacity, and perfectly solve the defects of traditional cylinder operation control.

Positioning and repetition accuracy

Micron-level position feedback ensures precise chip bonding; and high-speed continuous movement, repeat positioning accuracy reaches +/- 3 encoder counts, and radial deflection is less than 10um.

Z-axis design

The hollow shaft running through the Z-axis makes it easier to install the vacuum pick-and-place head, which facilitates the suction of materials. At the same time, the Z-axis has a built-in spring to prevent materials from falling, which saves costs and greatly improves production efficiency.

Goal Tech linear rotary motor can not only provide a mature solution for SMT, but also can be widely used in five-axis machine tools, engraving machines, engraving and milling machines, flip-chip machines and other occasions that require both linear and rotational degrees of freedom.
Goal Tech Electric is committed to becoming a global professional-grade, high-precision linear motor, encoder, driver and other integrated system solution provider, and escorts the localization of core components of semiconductor equipment.