It is a type of grinding machine that does not require the use of the axis of the workpiece for grinding. It generally consists of a grinding wheel, a guide wheel, and a bed. The grinding wheel and guide wheel are installed on the bed, and the grinding wheel actually performs the grinding work. The guide wheel is equipped with a linear guide rail perpendicular to the axis, which controls the diameter of the workpiece through the movement of the linear guide rail. When it is necessary to adjust the shape of the grinding wheel and guide wheel, two sets of cross shaped guide rails need to be set up to drive the adjusters to adjust the grinding wheel and guide wheel separately. Due to the large number of guide rails, the entire system is very complex and it is difficult to achieve high adjustment accuracy. Including grinding wheel 1, guide wheel 6, and bed body 9, grinding wheel 1 and guide wheel 6 are respectively installed on bed body 9 by grinding wheel frame 2 and guide wheel frame 7, and guide wheel frame linear guide rail 8 is installed under guide wheel 6. Its feature is that a grinding wheel frame guide rail 3 is set between grinding wheel 1 and bed body 9, which is perpendicular to guide wheel frame track guide rail 8, and guide wheel dresser 4 and grinding wheel dresser 5 are respectively installed on one side of grinding wheel frame 2 and guide wheel frame 7. The two mutually perpendicular guide rails are driven by the CNC system, and it can be thought that two dressers are used to respectively repair grinding wheel 1 and guide wheel 6. After finishing, the guide wheel frame track guide rail under guide wheel 6 is adjusted, and the workpiece size is adjusted under the control of the CNC system. Two dressers are used by Zhonggang Buy. Trimming the grinding wheel and guide wheel, the guide wheel trimmer is installed on the grinding wheel frame and driven by the movement of the grinding wheel frame guide rail. The grinding wheel trimmer is installed on the guide wheel frame, Driven by the linear guide rail of the guide wheel frame, the entire system is designed with only one pair of mutually perpendicular guide rails to complete the movement of the workpiece and the dressing of the grinding wheel and guide wheel, greatly simplifying the structure of the system and reducing the guide rail error caused by multiple guide rails. The grinding wheel spindle bearing adopts liquid dynamic and static bearings, which have high load-bearing capacity, good rigidity, and high reversal accuracy; The main shaft bearings of the guide wheel are designed with two circular double row cylindrical roller bearings in the front and paired angular contact ball bearings in the rear. The support rigidity is good, the reverse accuracy is high, and the working speed is infinitely variable, making it easy to select suitable speeds for parts of different diameters. It can be infinitely adjusted to achieve the desired finishing speed and achieve the desired surface quality of the guide wheel. The vertical feed system uses a combination of manual and servo motor feed methods. The horizontal feed component is located inside the bed, and the ball screw is driven by the Zhonghe Zhao motor to move the guide wheel seat, which is the primary feed for general production operations. It has the characteristics of sensitive movement, high micro feed accuracy, and long service life; The manual feed component is located inside the guide wheel frame, and the spacing between the guide wheel and the pallet can be adjusted as needed to meet the requirements of processing seasonal parts of different diameters. The centerless grinder is a type of grinder with shortened horizontal dimensions, which is particularly suitable for use in a small installation space and can meet the requirements of various production lines for simplification and space saving. In the process of application, it is a very convenient and sensitive equipment with efficient control system and simple operation. It is suitable for both single room production and small batch processing as well as large batch workpiece production. The equipment has many course options and accessories to choose from, and has a wide range of applications. Even for grinding messy surfaces, the centerless grinder can effectively achieve the reliability of the operation. It is particularly suitable for use in a small device space, a horizontally reduced size grinder. And it can meet the requirements of simplification and space saving for various production lines. Due to the fact that the grinding wheel dressing unit is located at a tilted downward position above the grinding wheel, there is no need to maintain a space on the side of the grinding wheel for the grinding wheel dressing unit, which is closely related to the lateral dimensions of traditional centerless grinders. Therefore, the centerless grinder can greatly reduce the lateral dimensions of the centerless grinder, and can be installed in a small device space to meet the requirements of simplification and space saving of various production lines, improving accuracy and efficiency. There are sudden rough marks on the surface of the processed part, mainly due to the coarse-grained grinding wheel particles falling off and being sandwiched between the grinding wheel and the workpiece. The following methods can be used to solve this problem: if the marks left during rough grinding cannot be ground off during fine grinding, the fine grinding allowance should be increased. When coarse-grained abrasive particles are found in the grinding fluid, the debris inside the grinding wheel casing should be removed. If the material toughness is too high, an aluminum oxide sand coarse-grained grinding wheel should be selected. When the abrasive particles are easily worn during the initial dressing, the worktable speed should be lowered, and the centerless grinding wheel should be made finer as much as possible, and rough machining should be carried out at a lower longitudinal speed, or a finer grained grinding wheel should be used instead. Generally, the material is hard and the grinding wheel is soft; The material is soft and the grinding wheel is hard, but if the material is too soft, a softer grinding wheel should also be selected. If the grinding wheel is not properly trimmed and there are raised abrasive particles, the grinding wheel of the centerless grinder should be re trimmed and the machining should be restarted.