Thread machining is one of the very important applications of CNC machining centers. The machining quality and efficiency of threads will directly affect the machining quality of parts and the production efficiency of machining centers.
CNC engraving machine is good at fine machining of small tools, with the ability of milling, grinding, drilling and high-speed tapping. It is widely used in 3C industry, mold industry, medical industry and other fields. This article collects common questions about CNC engraving.
With the widespread application of plastic products, such as daily chemical products and beverage packaging containers, the appearance needs often require the surface of the Metal Parts Machining cavity to reach the level of mirror polishing.
This is a frequently encountered problem, but it is also relatively easy to solve. When it is really not solved by technological means, it can be improved from the design and manufacture of molds, which can generally be solved.
When the production is over or the quality of injection molding fails, the injection molding machine needs to be shut down temporarily or for a long time. How to do the shutdown work is not only related to the quality of the next molding and the loss of raw materials, but also affects the service life of the screw and barrel.
1. Process classification: Molded foaming: primary foaming (large mold, small mold), secondary foaming Injection foaming: MD, slippers Continuous foaming: EPE Extrusion foam: board
The whole process of a product from research and development to the market needs to go through many links, among which the product structure design is an important part. In terms of product structure, the product must be manufactured and mass-produced with a mold for the product, and a plastic mold for plastic parts. Therefore, a product structure design engineer must not only be familiar with the structure of plastic parts, but also have a certain understanding of plastic molds. Today I will share with you 14 key points of plastic product structure design~
Start clamping 1. Start clamping pressure: The initial setting value is 25. When the pressure is too small and the speed is too slow, you can try to increase the speed. This pressure is too small, and the speed cannot be increased to the speed when needed. The speed is increased by +5 each time. Try and pay attention that when the pressure is set to a large value, the movable template will be instantly increased by high pressure to change the static state and become moving, so that the movable template hole and the tie rod will generate huge friction, which will accelerate the wear of the machine’s movable template hole and tie rod for a long time. The stability and precision of the movement of the movable platen decreases, which may affect the production of individual molds with higher precision requirements for the clamping mechanism.
The crystallinity and crystal form of crystalline plastic affect the physical and mechanical properties of the product. If the cooling rate during molding is slow, it is conducive to the progress of crystallization and can increase the degree of crystallinity. Therefore, it is extremely important to control the mold temperature to obtain products with excellent mechanical properties and good surface gloss.
1. Dimensional accuracy refers to the degree of conformity between the actual size of the processed part and the center of the tolerance zone of the part size. The dimensional accuracy is controlled by the dimensional tolerance. The dimensional tolerance is the allowable amount of variation in the size of the part during mold processing. In the case of the same basic size, the smaller the dimensional tolerance, the higher the dimensional accuracy.
