How to overhaul the cylindrical grinder can improve the machining accuracy of the grinder

Cylindrical grinding machine is a type of machine tool that is widely used. It is generally composed of cast iron bed, workbench, headstock and tailstock that support and drive the workpiece to rotate, and grinding wheel grinding frame (grinding head) for installing grinding wheels. , the lateral feed mechanism that controls the size of the grinding workpiece, the electrical and hydraulic devices that control the movement of the moving parts of the machine tool and other main components. Qian Dao Machinery mainly produces and sells hydraulic cylindrical grinders with processing lengths of 300mm and 500mm, and precision CNC cylindrical grinders . These OD grinders need to pay attention to the following items in daily use and maintenance

1) Inspection and repair of bed rails

The V-shaped guide rail of the bed should meet the following accuracy requirements after overhaul: the non-straightness in the vertical plane is ≤0.01mm/m; the non-straightness in the horizontal plane is ≤0.01mm/m; 250m; contact points require 12~14 points/25mmx25mm.
The plane guide rail of the bed should meet the following accuracy requirements after overhaul: non-parallelism to the V-shaped guide rail ≤0.02mm/m; non-straightness in the vertical plane ≤0.01mm/m; contact points require 12~14 points/25mmx25mm.

2) Inspection and trimming of slide rails

The V-shaped guide rail of the saddle seat should meet the following accuracy requirements after overhaul: the non-straightness in the vertical plane is ≤0.01mm in the entire length; the contact point requires 10~12 points/25mmx25mm. The plane guide rail of the saddle seat should meet the following accuracy requirements after overhaul: the non-parallelism of the V-shaped guide rail is ≤0.02mm/m; the contact point requires 10~12 points/25mmx25mm.

Cylindrical Grinding Machine

3) Adjust the gap between the grinding wheel spindle and the bearing bush

Paint on the journal of the main shaft of the grinding wheel, grind it with the bearing pad, scrape the surface of the bearing pad with a scraper, and make the contact point reach 12-14 points/25mmx25mm, then install and adjust, and adjust the gap between the grinding wheel spindle and the bearing pad to 0.0025~ 0.005mm, this
In this way, it can avoid the edge circle of the workpiece during grinding.

4) The balance between the grinding wheel spindle motor and the grinding wheel

The vibration of the grinding wheel spindle motor has a great influence on the roughness of the grinding surface, so it is necessary to dynamically balance the grinding wheel spindle motor. The grinding wheel needs to be balanced twice: first, use a diamond pen to trim the grinding wheel and then perform a rough balance; then use an oil stone or a grinding wheel for finishing after fine turning to fine-tune the grinding wheel and then perform a fine balance.

These are easy to ignore in the daily maintenance of the cylindrical grinder, if you pay attention to these details, you can greatly improve the accuracy of the grinding machine

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