Laiding Electronics applied for a patent for a cooling device for grinding aluminum nitride workpieces to improve the adaptability of the coolant injection direction
Aluminum nitride grinding coolant angle is wrong
Let’s adjust Nantong’s new patent as a whole and its parts together, and that’s it.
Aluminum nitride is a material with very high hardness, but poor thermal conductivity. Therefore, during grinding, as long as the injection angle of the coolant is slightly offset, the workpiece will chip. A company specializing in equipment in Nantong submitted a new patent application in September 2026. They improved the cooling injection system into a structure that includes two levels of overall coordination and local adjustment. This change directly solves the headache problem faced by many production workshops.
How to place the cooling mechanism
The device is installed on the side table of the grinding bed. It is equipped with a longitudinal guide in the length direction. The cooling mechanism is slid on this guide and is located directly above the grinding area. It can achieve synchronous sliding grinding coolant action as the workpiece moves, so there is no need to add an additional tracking mechanism.
The entire cooling mechanism includes a sliding component, an angle adjustment component, a cooling component, and two lateral air blowing components. These four parts work together, and they cooperate together. This design is much more complicated than the traditional single-nozzle solution, but this complexity comes at a price. What is gained in exchange is greater flexibility in the direction of the injection.
How to adjust the overall height and angle
The core structure is composed of a rotating base and an adjusting arm connected through a connection. The function of the telescopic driving member is to push the rotating base to rotate around the connection point. When a rotation occurs, the distance between the cooling component and the workpiece and the injection elevation angle will be changed at the same time to achieve a linkage effect, and do not need to be adjusted separately.
When faced with aluminum nitride discs with different diameters and different incident angles of coolant, the operator only needs to pull the telescopic rod hard, and the overall height and related angles of the equipment can be adjusted in place at one time. This action saves the trouble of repeated fine-tuning and makes the replacement of the entire equipment much faster.
How to adjust local angles individually
A lateral air blowing assembly is installed on the left and right sides of the cooling assembly. Each lateral air blowing assembly is equipped with an independent side adjustment driver, which can be used to adjust the local spray angle of the nozzle on that side respectively. In this way, the spray movements on both sides do not interfere with each other and can be aligned with the edge position of the workpiece.
When using the grinding process to process aluminum nitride materials, there are differences in heat dissipation conditions between the edge area and the center area. The operator only needs to deflect the side nozzles at a very small angle to achieve the purpose of spraying the cooling medium concentratedly to the corners where overheating is prone to occur. For the cooling treatment of the center area, the main nozzle is relied on for covering spraying.
What is the use of sideways blowing?
Two lateral air blowing components blow away debris and residual coolant on both sides of the grinding area, which can prevent the liquid film from forming eddy currents on the workpiece surface and affecting the roughness. This is especially critical for brittle materials such as aluminum nitride.
If the grinding debris sticks to the surface of the workpiece and is then pressed in by the grinding wheel, it is likely to cause micro-cracks. Sideways blowing can remove debris in a timely manner, which directly reduces the risk of edge chipping and micro-cracks. Then, the surface quality will appear more stable.
What is the background of this company in Nantong?
The applicant is a grinding coolant company in Nantong. The company was established in 2012 and is a special equipment manufacturing company with a registered capital of 60 million yuan. Through Tianyancha, it can be found that the company already has relevant information including 84 patents, 5 bidding records, and has invested in 4 foreign companies. Overall, this company has a relatively solid technological accumulation.
This company has a total of 84 patents, which cover many different subdivision directions. The patent issued this time on the cooling device is the latest layout move made by this company in the field of precision grinding. This series of situations fully illustrates that the company has continued to make deep investment and focus in the development of high-precision processing equipment.
What it means for grinding shops
Nowadays, many production sites still use devices with only one nozzle and a fixed angle. When processing workpieces of different specifications, the machine must be stopped for adjustment, which results in lower overall efficiency. The new improvement scheme allows the overall angle and the local angle to be adjusted independently. In this way, the time required to change models can be greatly reduced, and the pace of production is also accelerated.
Aluminum nitride is used on semiconductor substrates and also in 5G high-frequency devices. Its requirements for surface quality are very, very high. The accuracy of cooling injection will directly determine the size of grinding thermal deformation. What this device does is that it can suddenly elevate the concept of "sufficiency" to a new level called "accuracy."
When grinding aluminum nitride in your workshop, regarding the adjustment of the coolant angle, do you rely on manual adjustment, or can you follow the workpiece for automatic tracking? You are welcome to share your actual work situation in the comment area. If you think this content is useful, then please click the like button and share it with your peers.
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