PU linear timing belts play a key role in many automation equipment and transmission systems, and their pitch accuracy control is of great significance for achieving precise synchronous transmission.
First, the pitch accuracy directly affects the accuracy of synchronous transmission. In multi-axis collaborative equipment, such as the robot arm transmission system in the automated production line, if the pitch accuracy of the PU linear timing belts is not high, the movement between the axes will not be accurately synchronized, resulting in positioning deviations in the production process, affecting the processing accuracy and quality of the product. For example, in the electronic chip packaging production line, a small synchronization error may cause poor chip packaging and cause a large number of scrapped products.
Secondly, high-precision pitch helps to reduce the vibration and noise of the transmission system. When the pitch error of the synchronous belt is small, the belt and the pulley are evenly and steadily stressed during the meshing process, reducing the vibration and noise caused by periodic impact. This is especially important for equipment that requires a quiet working environment, such as medical instruments and office automation equipment, which can improve the comfort and stability of the equipment.
In terms of pitch accuracy control methods, mold design and manufacturing are key links. High-precision mold processing equipment and advanced processing technology are used to ensure the accuracy of mold tooth shape and consistency of pitch. For example, CNC processing technology is used to finely process the mold and strictly control the dimensional tolerance of the mold tooth shape, so that the produced PU linear timing belts can obtain accurate pitch during molding.
The selection and processing of raw materials will also affect the pitch accuracy. High-quality and uniform PU materials have stable physical properties and can better maintain the consistency of shape and size during the extrusion molding process. Fully mixing and pre-treating the raw materials to remove impurities and bubbles can avoid pitch errors caused by material defects.
Process parameter control during the production process is indispensable. For example, the precise matching of extrusion temperature, extrusion speed and pulling speed. The appropriate extrusion temperature can ensure the fluidity and plasticity of the PU material, so that the material can evenly fill the mold cavity; accurate extrusion speed and pulling speed can ensure the uniformity of the stretching of the timing belt during the molding process, thereby ensuring pitch accuracy.
In addition, the post-processing process also plays a role in the stability of pitch accuracy. For example, vulcanization treatment, reasonable control of vulcanization time, temperature and pressure, make the structure of the synchronous belt further stable, and reduce the pitch change caused by the release of internal stress.
Finally, the quality inspection link is the last line of defense to ensure the pitch accuracy. Advanced testing equipment, such as laser interferometer, is used to test the pitch accuracy of the produced pu linear timing belts, screen out unqualified products, and ensure that the synchronous belts put on the market can meet the requirements of high-precision synchronous transmission.
The pitch accuracy control of pu linear timing belts is a systematic project. From molds to raw materials, from production processes to quality inspection, each link is closely linked. It has an important role in the accuracy, stability and performance of the entire transmission system of synchronous transmission.
