Precautions to be taken when grinding with a grinder

2025-04-09

Precautions to be taken when grinding with a grinder.1. Before driving, the machine tool should be carefully inspected, including checking the control mechanism, electrical equipment, and magnetic suction cups and other fixtures.2. After inspection and lubrication, conduct a test run and confirm that it is in good condition before use. When installing the workpiece, attention should be paid to aligning and tightening it. If the workpiece becomes loose during the grinding process, it may cause serious consequences such as flying out and injuring people or crushing the grinding wheel.3. When starting work, use manual adjustment to slow down the grinding wheel and bring it closer to the workpiece. The initial feed rate should be small, and excessive force should be avoided to prevent collision with the grinding wheel.4. When using a stopper to control the reciprocating motion of the worktable, it is necessary ...

Malfunction and repair of dynamic pressure bearings in surface grinding machines

2025-04-09

The outer circles of the front and rear bearings of the grinding head of the surface grinder are conical, and there are only three equally spaced flanges in contact with the inner taper hole of the bearing seat. There are 12 evenly spaced axial grooves on the bearings. When the bearings move axially, the radial clearance between the bearings and the shaft changes; When the bearing tightens, only the internal clearance of the three flanges becomes smaller, and the rest of the parts undergo elastic deformation to form three oil wedges, forming an integral three oil wedge dynamic pressure sliding bearing. The clearance of the bearing is small, the rigidity is good, and its lubrication method is self-priming lubrication. During use, there were occurrences of grinding head holding onto the shaft, vibration, and heating. 1、 Analyze the causes of the malfunction. 2、 Using a combination of scraping and grind...

What are the characteristics of CNC surface grinders

2025-04-09

What are the characteristics of CNC surface grinders?1. Suitable for processing complex shaped parts.2. Implement computer control without human error.3. Precision compensation and optimization control can be achieved through computer software.4. Processing, turning, grinding, electrical machining, etc. have tool magazine and tool changing functions, reducing clamping times and increasing machining accuracy.5. Numerical control machine tools have added flexibility to mechanical processing equipment. Flexible processing is not only suitable for multi variety, small and medium batch production, but also for large-scale production, and can alternately complete the processing of two or more different parts, adding the function of automatic workpiece change and enabling unmanned operation at night. ...

Automatic balancing method for grinding wheel of grinder

2025-04-09

The vibration of machine tools has a significant impact on the grinding accuracy and stability of bearing groove grinders. In order to ensure the machining performance of the grinder, manufacturers have balanced the motor, pulley, and shaft system well before leaving the factory. The vibration of the grinder is mainly caused by the imbalance of the grinding wheel. Although it is balanced before leaving the factory, the grinding wheel itself is in a constantly changing process during the machining process, such as uneven wear during the machining process, different adsorption of coolant, correction of deviations, and installation errors and materials when replacing new grinding wheels, all of which can cause the quality of the grinding wheel system to deviate from its rotation axis and cause grinder vibration. This vibration will cause vibration patterns on the machined surface of the part, which has a signi...

What are the types of grinding machines

2025-04-09

Grinding machine refers to a machine tool that uses grinding tools or abrasives to machine the surface of workpieces. Generally used for grinding the hardened surface of parts. Usually, the rotation of the grinding tool is the main motion, and the movement of the workpiece or grinding tool is the feed motion. It has a wide range of applications, high machining accuracy, and low surface roughness Ra value. Grinding machines can be divided into eight types:1. External cylindrical grinder: It is a basic series of ordinary types, mainly used for grinding cylindrical and conical outer surfaces.2. Internal grinding machine: It is a basic series of ordinary types, mainly used for grinding cylindrical and conical inner surfaces.3. Heartless grinder: The workpiece is clamped by a centerless clamp and generally supported between a guide wheel and a bracket. The guide wheel drives the workpiece to rotate, mainly used ...

Characteristics of cylindrical grinding machine

2025-04-09

1. The grinding wheel spindle bearing adopts a conical shaped oil wedge dynamic bearing, and the grinding wheel spindle has high bearing stiffness at low speeds.2. The grinding wheel rack guide rail adopts a cross roller rigid guide rail, and the semi-automatic feed mechanism is implemented by a rotary oil cylinder.3. The tailstock shaft system has the characteristic of seamless stiffness, and the electrical box, hydraulic box, and cooling box are separated from the machine tool.4. There are grinding indicators and coolant filters.5. The headband speed only has the AC variable frequency stepless speed regulation.6. The electrical system adopts a programmable logic controller (PLC) with self diagnostic function and easy maintenance.7. Optional automatic measuring instrument. ...

The process of using an external cylindrical grinder

2025-04-09

1. Operators need to undergo pre job training when performing operations related to the cylindrical grinder. Only after undergoing pre job training can they perform the corresponding operations. In the process of training together, it is also necessary to have an understanding of the detailed structure, operating principles, and fundamental functions of the device. And detailed reading of relevant operation manuals is also required.2. When the device is turned on, it is necessary to inspect the device to ensure that it operates normally. If any faults are found during the inspection, timely correction and handling are required. It is also necessary to conduct corresponding inspections on the relevant systems, including the power supply system, refueling system, electrical system, etc. Only when all systems are operating normally can operations be carried out. 3. When carrying out the construction operation ...

The accuracy influence of external grinding machine

2025-04-09

1、 The influence of the equal height of grinding head, headstock, and tailstock on the dimensional accuracy of workpieces The height error of the grinding head, headstock, and tailstock will cause the line connecting the headstock and tailstock to deviate from the axis of the grinding wheel spindle in space, resulting in a hyperbolic surface on the surface of the workpiece being ground. 2、 The influence of parallelism error of the spindle axis of the grinding head in the horizontal plane on the dimensional accuracy of the workpiece caused by the connection between the headstock and tailstock When this error occurs, the shape of the workpiece ground by the external cylindrical grinder will be a cone, that is, the grinding wheel will grind at an angle, and the surface will have spiral grinding patterns. 3、 The influence of perpendicularity error of grinding head movement relative to machine tool gu...

What are the precautions during the CNC grinding process

2025-04-09

Firstly, the installation and dressing of CNC grinding wheels. Generally, flange installation is used for the installation of grinding wheels. During installation, the following points should be noted:1. Before clamping, an audio inspection should be conducted. Lift the grinding wheel with a rope and lightly tap it. The sound should be crisp, without any tremolo or noise.2. The diameters of the two flanges must be equal so that the grinding wheel is not subjected to bending stress that could cause breakage. The minimum diameter of the flange should not be less than 1/3 of the diameter of the grinding wheel, and should not be less than 2/3 without a protective cover.3. Elastic materials such as rubber and felt must be placed between the grinding wheel and the flange to increase the contact surface and ensure even force distribution. After clamping and static balancing, the grinding wheel should be tested for...

Maintenance of cylindrical grinding machine and grinding wheel

2025-04-09

1、 Maintenance of grinding machine1. Inspection and Scratching of Bed Guide RailAfter maintenance, the V-shaped guide rail of the bed should meet the following accuracy requirements: non straightness in the vertical plane ≤ 0.01mm/m; Non straightness within the horizontal plane ≤ 0.01mm/m; The non perpendicularity of the sliding saddle guide rail is ≤ 0.02mm/250m; Contact point requirements are 12-14 points/25mm × 25mm.After maintenance, the bed flat guide rail should meet the following accuracy requirements: the non parallelism of the V-shaped guide rail should be ≤ 0.02mm/m; Non straightness within the vertical plane ≤ 0.01mm/m; Contact point requirements are 12-14 points/25mm × 25mm.2. Inspection and Scratching of Sliding Saddle Guide RailAfter maintenance, the V-shaped guide rail of the sliding saddle should meet the following accuracy requirements: the non straightness...