Four effective methods to improve the cutting accuracy of glass processingCutting is an essential basic process in the process of glass production and deep processing. In the process of operation, it is usually required to meet the quality requirements of accurate size, flat and vertical section, and no broken edges and corners. As the market demand is more and more diversified, the requirements for the glass size are also more stringent, for example, the accuracy needs to be controlled within & plusmn; Within 0.5mm, some even accept a positive tolerance of 0-0.2mm. Therefore, how to improve the cutting quality of glass is a problem that enterprises have to consider.Glass cutting method:The most common cutting method of glass substrate is to use diamond grinding wheel or hard alloy wheel to scratch the glass surface, and then break it by breaking the edge.△ mechanical cutting methodThis method is relatively simple and easy to operate. However, after the scribing and breaking process, due to the generation of residual stress and microcracks on the glass edge, subsequent processes such as cleaning, grinding and heat treatment need to be added. During the cleaning process, small debris may cause certain damage to the glass surface.With the increasingly high requirements of glass cutting quality and glass cutting yield, the traditional mechanical cutting method can not meet the production demand. In the past five years, there have been some laser cutting glass equipment used for Industry in the industry, and the processed glass has some advantages over the traditional cutting methods.There are two main methods for cutting glass by laser, one is melting cutting method, and the other is crack control method. Among them, the crack control method is widely used. The cut glass is straight, without debris, and there are few micro cracks.Working principle of △ crack control method;No matter what the cutting method is, it is necessary to continuously optimize the cutting process to improve the cutting quality of glass, specifically. Starting from the cross cutting machine, the following aspects can be considered: & nbsp;1、 Improve cross cutting quality01 the thickness of the product shall match the cutting wheel and cutting pressureThe cutter wheel shall be adjusted according to the required thickness of the glass. The thicker the glass, the greater the angle and cutting pressure of the cutter wheel used, and the thinner the glass, the smaller the angle and cutting pressure of the cutter wheel used. The pressure of the small angle cutter wheel should not be too large, otherwise the glass is easy to be broken during the cutting process; The pressure of large angle cutter wheel should not be too small, otherwise the problem of shallow or no cutter marks will occur. The knife marks cut by the appropriate cutter wheel angle and cutting pressure shall be smooth, uniform and continuous, without scraping and flying debris& nbsp;02 adjust the tool drop point, tool lift point and tool bar stroke of the cross cutting tool & nbsp;The function of the cross cutting machine is to cut the glass transversely, break the glass transversely and accelerate the separation. The knife lifting point and the knife dropping point need to be adjusted according to the plate width and the edge tooth mark. The common practice is to set the knife lifting or falling point in the internal dental impression, which can not only protect the cutting knife, but also ensure the uniformity and continuity of the cutting knife impression& nbsp;The travel of the cutter bar shall not be too high or too low. If the travel is too high, the knife marks are discontinuous, which will cause continuous breaking or non straight breaking; If the stroke is too low, the cutting blade mark will be scratched, and the upper surface will be easily broken when it is broken.The cylinder pressure on the tool holder needs to be adjusted according to the glass with different thickness. Generally, the cylinder pressure pointer is between the yellow area and the green area, and the air pressure is not easy to be too large.03 control horizontal breaking time & nbsp;The advance or delay of the breaking time determines the breaking action time of the breaking roller. The parameter setting must ensure that the glass is just broken when the cross cutting blade print reaches directly above the breaking roller. After the glass is broken, it will fall synchronously with the breaking roller. Therefore, the breaking time should be adjusted according to different thickness.In addition, since the knife mark is not at the highest point of the breaking roller, the breaking action of thin glass usually needs to be advanced, and the breaking action of thick glass needs to be delayed. During the adjustment process, the adjustment should be made according to the actual breaking position.  △ glass cross cutting machine2、 Control of tin stripping process;The glass is sent from the tin bath to the cold end cutting area after cooling in the annealing furnace. In this process, due to the stability of the equipment and the process adjustment, the warpage of the glass ribbon is often formed. Especially in the production of thin glass, the deformation is particularly strong, and the sound of drum beating can be heard in the annealing furnace. The uneven glass ribbon will seriously affect the cutting accuracy, which puts forward strict requirements for the control of tin stripping process. Although the glass warpage can not be completely solved at present, it can be improved to some extent by effective means. It requires that the edging machines on both sides of the tin bath run smoothly, the glass ribbon is stressed evenly, the transverse temperature difference is small, and the longitudinal temperature gradient is reasonable, so as to ensure that the plate surface tends to be flat when the glass ribbon is transferred to the cutting area, reduce the fluctuation of the glass ribbon within a certain range, and reduce the impact of the glass ribbon on the cutting accuracy.△ float glass production line;3、 Stabilize air source and reduce friction;If the air source is not stable, the take-off and landing of the tool rest will be affected. In order to ensure that the crosscutting machine has sufficient air supply pressure, the crosscutting machine can be equipped with a separate air tank, and the air outlet is equipped with a pressure stabilizing valve to ensure that the outlet pressure is stable and the pressure entering the cylinder is stable. At the same time, the distance between the air storage tank and the head of the crosscutting machine shall be shortened as much as possible to reduce the loss of gas, so as to ensure that the pressure on the cylinder of the crosscutting machine head frame is balanced and stable, so as to improve the expansion and contraction speed and response time of the cylinder, so as to ensure that the error of the cutting point is small, so as to reduce the cutting error and improve the accuracy of the crosscutting machine& nbsp;4、 Shorten signal response timeIn order to improve the response time of the cross cutting machine and reduce the impact caused by the unstable air source, the air cylinder can be replaced with an electric cylinder. Under the same environment, the electric cylinder can ensure stable output pressure and distance, and the response speed of the electric signal is faster than that of the pneumatic signal. When the response time is shortened, the accuracy of the landing position of the cutter head frame will be greatly improved, and the accuracy of the corresponding cutting point will also be improved, so as to improve the cutting accuracy& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;Summary: the above are the factors that need to be considered for glass cutting. In actual production, only by fully understanding the factors that affect glass cutting and making corresponding adjustments in time can the accuracy of glass cutting be improved!