How to calculate the grinding machine processing fee

2025-04-10

How is the grinding machine processing fee calculated?1、 Estimation of prices for machined parts.1. Unit price (excluding tax)=direct material cost+heat treatment cost+processing fee+management fee.2. Unit price (including tax)=(direct material cost+heat treatment cost+processing fee+management fee) * 1.17.2、 The specific composition of processing prices.1. Direct material costs.2. Heat treatment cost.3. Processing fees. ...

What are the reasons for grinding machine vibration

2025-04-10

What are the reasons for grinding machine vibration? There are multiple reasons that can cause grinding machine vibration, and the following are the three main reasons:1. Check the horizon.If the level of the foundation screws of the machine tool is not adjusted properly, it will cause resonance of the machine tool.2. Check the floor.If the above actions have been taken and the vibration still persists, we should check whether it is due to the virtual space on the ground floor. If the ground is terrazzo or paved with floor tiles, it will be relatively solid. If it is a cement floor, the ground will be very weak and cause resonance.3. Check the grinding wheel and flange.If the vibration still persists after the above actions, we need to check the problem of the grinding wheel and the flange fixing the grinding wheel. First is the grinding wheel. Due to the uneven quality of grinding wheels on the market, the...

Key points to note when operating an internal grinder

2025-04-10

Key points to note when operating an internal grinder.1. When polishing different workpieces, it is necessary to follow the equipment instructions and operation manual to ensure the quality of workpiece processing.2. After the operation is completed, the internal grinder should be regularly inspected and maintained. If a malfunction is found, a dedicated person needs to inspect and repair it.3. Regular cleaning and maintenance can not only improve processing quality, but also be a necessary step in increasing the service life of internal grinding machines. ...

How to repair the grinding damage on the spindle of an external cylindrical grinder

2025-04-10

How to repair the spindle wear of an external cylindrical grinder?1. Add one gasket to the left end of the skeleton oil seal installation position and the inner side of the left end cover of the main shaft, so that the area where the oil seal grinds the deep groove is blocked or staggered by the gasket. Due to the limited installation position of the left end cover of the main shaft, the thickness of the gasket cannot be too thick, but it must ensure that the position of the grinding deep groove can be avoided. Therefore, calculate, design and manufacture one gasket.2. Dismantle the main spindle of the grinding wheel holder, weld the deep groove ground by the main spindle, and grind it after welding; Or disassemble and spray coat. For this malfunction, spray coating was chosen, and after spray coating, secondary processing is required. The requirements for accuracy and coaxiality tolerance during the grindi...

Processing characteristics of centerless grinding machine

2025-04-10

The processing characteristics of the centerless grinder.1. Continuous processing, no need to retract the tool, short replication time for clamping workpieces, and high productivity.2. The positioning mechanism of the bracket and guide wheel has better support rigidity than the top and center frame mechanisms of ordinary cylindrical grinders, with a larger cutting amount, and is conducive to the processing of slender shaft workpieces, making it easy to achieve high-speed grinding and strong grinding.3. The wide grinding wheel centerless grinder has a pass through mechanism that can increase the machining allowance each time. It can perform sequential or multi wheel grinding on complex surfaces during cutting in grinding, with high productivity and a wide range of applications.4. The workpiece of the centerless cylindrical grinder is positioned on the positioning mechanism by the outer circle, and the grindi...

Question and answer on outer ring grinding machine

2025-04-10

Q&A on the outer ring grinder. 1、 Q: What is the precision and roughness of cylindrical grinding machine processing? Answer: As long as the precision of the measuring tool is high, the machining accuracy of the cylindrical grinder can reach 0.001mm, and the roughness can reach Ra0.40020. 2、 Q: What is the size of the bearing system between the outer cylindrical grinder and the bearing? Answer: Bearing shells belong to sliding bearings. The spindle speed of the ordinary cylindrical grinder grinding wheel is very high, and the radial force caused by the grinding force is also very large. The rolling bearings are no longer "capable". Installing gaps that are too large or too small can affect the establishment of sliding. 3、 Q: What is the reason for the large vibration generated by a faster feed of the cylindrical grinder? Answer: The vibration comes from the motion part: 1. Check ...

Factors affecting the machining accuracy of cylindrical grinders

2025-04-10

Factors affecting the machining accuracy of cylindrical grinders. 1. The height error of the grinding head, headstock, and tailstock will cause the centerline of 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. When there is a parallelism error between the centerline of the headstock and tailstock and the axis of the grinding head spindle in the horizontal plane, the shape of the workpiece ground by the external cylindrical grinder will be a cone. 3. The perpendicularity error of the grinding head relative to the guide rail of the cylindrical grinder will cause the spindle axis to deviate from the centerline of the headstock and tailstock. ...

How to adjust the grinding wheel of an external cylindrical grinder

2025-04-10

How to adjust the grinding wheel of an external cylindrical grinder.1. Choose the appropriate removal depth to trim the grinding wheel.2. Proper use of coolant can accelerate repair speed and improve repair efficiency.3. In grinding wheel dressing, it is important to reduce vibration to avoid leaving dressing marks, collisions, and damage to dressing tools on the surface of the grinding wheel. ...

I'm not afraid to encounter these three major defects of cylindrical grinding machines again

2025-04-10

Don't be afraid of encountering these three major defects of cylindrical grinding machines again!1、 The workpiece of the CNC cylindrical grinder is prone to bending during grinding.Reason for analysis:1. The grinding amount is too large during external cylindrical grinding.2. When grinding on an external cylindrical grinder, there is insufficient supply of cutting fluid.Protective measures:1. Reduce the back cutting amount of the external cylindrical grinder appropriately.2. Ensure sufficient supply of cutting fluid.2、 The outer circumference of the shoulder is relatively large.Reason for analysis:1. The dwell time of the reversing worktable of the external cylindrical grinder is too short.2. The grinding wheel of the external grinder is worn and the outer angle of the grinding wheel becomes rounded.Protective measures:1. Increase the dwell time for reversing the worktable of the cylindrical g...

Installation principle and maintenance parts of cylindrical grinder

2025-04-10

The installation principle and maintenance parts of the cylindrical grinder.1. When the cylindrical grinder is transported to the operation workshop, it should not be placed outdoors for a long time, as sunlight may affect the accuracy.2. When loading and unloading equipment, copper cables with a diameter of 10mm or more should be used to lift through the hook or unloaded with a stacker crane. Attention should be paid to the center of gravity position to prevent tipping.3. If rust proof oil is found on the outer cylindrical grinder, use a soft cloth dipped in kerosene to wipe it off.4. After each homework is completed, things, fixtures, and measuring tools should be cleaned, and the bed should also be cleaned. The surrounding environment should be cleaned to maintain cleanliness.5. Check the oil level to see if it needs to be increased, and if so, increase it promptly.6. Carefully inspect the cooling pump t...