One of the bottlenecks affecting the production cost and efficiency of resin-cut sheets is its molding technology. Resin-cut sheets require large-scale production, and ideally, automatic press forming can save labor costs and improve efficiency.
As early as the 1980s, the industry has carried out explorations and attempts in this area and introduced an automatic forming press from abroad. The device is compact in design and differs from conventional presses in that it has only one additional feed system.
Its working principle is: put the mixture into the upper hopper, shake it, drop it on the conveyor belt, scrape it with the scraper, adjust the conveying speed, send the material to the weighing hopper, weigh it accurately and then feed it into the dies. Cavity.
From the design principle, it should be fast and effective, but there is a fatal flaw here so that no matter how it is adjusted, it will never reach the ideal level of design. Because the high quality cutting disc supplier is not like smelting corundum and silicon carbide, the error of raw materials can't be too big. It is not an easy task to weigh accurately through the conveyor belt. Repeated adjustment can not only improve efficiency but also waste a lot of time.
Nowadays, a compromise is adapted to bypass the more difficult feed system, artificial feed, multi-station press, labor intensity reduction, and production efficiency.
In the future, we still need to broaden our horizons and create new ways to design an ideal feed system. Once successful, the production of cut pieces will be as efficient and fast as the production of coated abrasives, fully mechanized, automated, and completely bid farewell to labor-intensive production, cutting The film market will also undergo a sweeping change!

Grinding is a method of cutting a workpiece by using a cutting piece as a cutting tool on a grinding machine. The characteristics of this method are:
(1) Since the cut piece abrasive grains themselves have high hardness and heat resistance, the grinding can process materials having high hardness, such as hardened steel and hard alloy.
(2) The characteristics of the cutting piece and the grinding machine determine that the grinding process system can make uniform micro-cutting, generally ap=0.001~0.005mm; the grinding speed is very high, generally up to v=30~50m/s; the grinding machine has good rigidity With hydraulic transmission, grinding can economically achieve high machining accuracy (IT6 to IT5) and small surface roughness (Ra = 0.8 to 0.2 μm). Grinding is one of the main methods of finishing parts.
(3) The temperature in the grinding zone is high due to severe friction. This can cause stress and deformation of the workpiece and even burn the surface of the workpiece. Therefore, a large amount of coolant must be injected during grinding to reduce the grinding temperature. The coolant can also act as chipping and lubrication.
(4) The radial force during grinding is large. This results in a flexible retraction of the machine-cut piece-workpiece system, making the actual depth of cut less than the nominal depth of cut. Therefore, when the grinding is about to be completed, the knife should not be used for light grinding to eliminate the error.
(5) After the abrasive grain is blunt, the grinding force also increases, causing the abrasive grain to break or fall off, and the sharp edge is re-appeared. This characteristic is called "self-sharpness". Self-sharpening enables grinding to work normally in a certain period of time, but after a certain working time, manual finishing should be carried out to avoid vibration, noise, and damage to the surface quality of the workpiece.