Arc plate products mainly refer to arc plates that do not form a whole circle, such as arc walls, arc bar stand plates, etc. This kind of product is completely consistent with the processing technology of ordinary hollow column and column bodies, and the accuracy of corner-cutting is slightly lower than that of hollow columns. Generally, a stone of this shape needs to be cut from a whole block. If the order quantity is large, there is no problem. But if you want to arc again, but the amount is not so large, what should you do? That can be polished with 20 thick stones.
For the shaping of circular arc plate, due to the two processing methods of barrel saw and rope saw, the shape deformation of circular arc surface will occur during processing, that is, the processed product is not a standard circular arc surface. To overcome these defects, the circular arc surface must be shaped. If you want to process an interchangeable circular arc plate, you must have the shaping process of a circular arc plate. The deformed arc surface can be removed by using the shaping disc of the end face to close the diamond cutter head and adjusting the radius of the rotating worktable. This processing method is called shaping.
There are three methods for shaping circular arc plates, namely pendulum shaping, horizontal rotary shaping, and vertical rotary shaping.
Pendulum machining
Because both ends of the swinging circular arc plate cannot be processed, the swinging circular arc plate walking mill can only process the circular arc plate blank without trimming. The circular arc plate can be shaped by fixing the height of the grinding head, but the shaping accuracy is not high, and the processed circular arc plate is difficult to be interchangeable.
Rotary machining
In the vertical circular arc plate mill, after the circular arc plate is trimmed, the whole circle is clamped on the rotary worktable to complete the shaping, rough grinding, fine grinding, and polishing processes at one time, with high machining precision and good interchangeability.
Scribing Handmade
Most small circular arc plate processing plants use this method for shaping and processing and use the standard template marking as the shape processing benchmark. Using the straight edge as the straight-line machining benchmark, we can also process a relatively standard circular arc plate. The processing quality of this method is completely determined by the skill level of the operator, so the processing quality is unstable.
Technical indexes of stone circular arc plate
1. The minimum wall thickness of circular arc plate shall not be less than 18 mm
2. Allowable angle tolerance of circular arc plate: 0.40mm for superior products, 0.60mm for first-class products, 0.80mm for qualified products, and 0.80mm for side angle of circular arc plate α Shall not be less than 90 °.
3. For the specification and size of circular arc plate, use a vernier caliper or measuring instrument that can meet the requirements of measurement accuracy to measure the chord length, height, and minimum wall thickness of circular arc plate. The maximum and minimum deviation are used to represent the dimensional deviation of the chord length, height, and wall thickness. The measured value is accurate to 0.1 mm.
5. Straightness of circular arc plate stick a steel ruler with flatness tolerance of 0.mm on the tested arc surface along the direction of circular arc plate bus, and measure the gap between the ruler surface and the plate surface with a feeler gauge. When the height of the tested circular arc plate is greater than 2000mm, measure along the tested bus section with a 2000 -. The straightness tolerance of the circular arc plate is represented by the measured value of maximum clearance. The measured value is accurate to 0.05mm.
6. According to the provisions of GB / T 1800.3 and GB / T 801, the arc profiling with the dimensional accuracy of js7 (js7) shall be used to naturally stick to the inspected arc surface. The ratio of the arc length of the drawing arc to the arc length of the inspected arc surface shall not be less than 23. Use a feeler gauge to measure the gap between the ruler surface and the circular arc surface, and the measured value of the maximum gap shall represent the linear profile tolerance of the arc plate. The measured value is accurate to 0.05mm.
7. 90 ° steel angle ruler with an inner angle perpendicularity tolerance of 0.13MM and the inner angle side length of 500mm x 400mm is used for the angle of the circular arc plate. Close the short edge of the angle ruler to the end face of the circular arc plate, the long edge of the angle ruler to the edge line of the circular arc plate, and measure the maximum gap between the edge line of the circular arc plate and the long edge of the angle ruler with a feeler gauge. Measure the four corners of the circular arc plate with the above method. The angular tolerance of the circular arc plate is represented by the measured value of maximum clearance. The measured value is accurate to 0.05mm.
8. Angle an of the circular arc plate: stick the circular arc profile against the decorative surface of the circular arc plate, make the extension line of the radial scale line on it intersect with the edge line of the circular arc plate, place the small flat ruler on the circular arc profile along the radial scale line, and measure the included angle between the side of the circular arc plate and the small flat ruler.
Stone arc plate can better reflect the plasticity of stone, which can not be compared with other materials. Well, this article is written here. If you have more good suggestions on circular arc plates, you are welcome to email me at sales@sntstone.com.
