A processing method for processing rolls with arc-shaped concavities using ordinary cylindrical grinders
A technology of cylindrical grinding machine and processing method, which is applied in the field of metallurgy, can solve problems such as difficult-to-machine concave rolls, and achieve the effect of increasing added value and improving product quality
Active Publication Date: 2018-08-31
NANJING IRON & STEEL CO LTD
View PDF12 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
During rolling, in order to ensure that the product is thicker in the middle and thinner on both sides, it is required to use concave rolls. Generally, CNC grinding machines must be used for grinding concave rolls. It is difficult to process concave rolls without CNC grinding machines.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] On the premise that there is no CNC grinding machine, use an ordinary cylindrical grinding machine to process a curved finishing roll with a specified concavity. The range of concavity is that the center is 0.1-0.2mm smaller than the diameter of both sides, and the width of the middle part 220 is a concave arc. , the two sides are straight and the surface roughness is 0.8. There are two cases for the processing of arc-shaped concave rolls. The first case: the new roll is ground into a specified roll shape; the second case: the arc-shaped roll is used and then ground and repaired. figure 1 Is a schematic diagram of the present invention, among the figure, 1 is emery wheel, 2 is roll.
[0023] First case:
[0024] 1. When the new roll enters the factory, the roll is ground first to ensure the jump, concentricity, and size;
[0025] 2. Then use the pallet to determine the center line of the roll and the width limit line on both sides;
[0026] 3. Start grinding the roll...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for machining rollers with arc concavities through a plain cylindrical grinder. According to the first condition, the new rollers are ground to form specific roller shapes; center lines and width limiting lines on the two sides of the rollers are determined through a snap gauge; the rollers are ground from the tail of a grinding machine, the travel speed of work-pieces of the grinding machine is lowered, the grinding feed amount is gradually increased according to the arc progress proportion, and the grinding amount is +0.1 mm in the middle; after the center lines are ground, the grinding amount is gradually reduced according to the previous feed amount to guarantee that a grinding wheel can completely leave on a width line on a head of the grinding machine; and the rollers are measured, seven points are uniformly selected for measurement, then the travel speed is lowered to 1.5 meters / minute according to the measuring result and finally the rollers with the arc concavities meeting requirements are obtained. According to the second condition, the rollers are ground and repaired after used, and the concavities are greater than the actual requirements by 0.03-0.06 mm in the grinding and repairing process after the rollers are used. According to the method, the cost can be saved.
Description
technical field [0001] The invention relates to the field of metallurgy, and relates to a processing technology for rolls with concaves, in particular to a processing method for processing rolls with arc-shaped concaves by using an ordinary cylindrical grinder. Background technique [0002] According to the user's requirements, the strip steel product should have a certain convexity in the middle, that is, the middle of the end surface of the steel strip is thicker than the two sides, but when using ordinary rolls, after rolling 20 steels, the rolls will be deformed due to temperature, and the middle will be convex. The rolled steel strip will be thin in the middle and thick on both sides, which cannot meet customer needs, resulting in quality objections and loss of orders. However, in order to ensure that the product is thicker in the middle and thinner on both sides, it is necessary to produce 20 rolls and change the rolls, which consumes too much and is not cost-effective...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B24B1/00B24B19/00
CPCB24B1/00B24B19/00
Inventor 李杨
Owner NANJING IRON & STEEL CO LTD