A processing method for ensuring smooth transition of a fire-resistant material circular arc

Abstract

The application discloses a processing method for ensuring smooth transition of a fire-resistant material circular arc, and belongs to the technical field of fire-resistant material machining. A plane center line of the fire-resistant material is measured, a platform is processed at the upper and lower theoretical bevel joint of the fire-resistant material, a tool is moved to the plane center line, the tool circular arc is close to the upper and lower actual bevel joint corner, the tool is moved to the bevel center line, the tool circular arc is used to process the upper and lower actual bevel joint corner, and the fire-resistant material with a smooth transition circular arc corner is obtained. The tool setting mode is changed, the bevel center is determined, the bevel machining error, the tool manufacturing error and the tool setting error are eliminated, the opening size of the forming tool is changed to process the circular arc corner, the machining precision of the circular arc corner is ensured, the smooth transition design requirement of the circular arc corner and the bevel joint is ensured, the assembly precision of the product is improved, and the use requirement is met.

Description

Technical Field

[0001] This invention belongs to the field of refractory material machining technology, specifically relating to a machining method that ensures a smooth transition of refractory material arcs. Background Technology

[0002] In the substrate glass industry, a large amount of refractory materials are required. Due to the inherent hardness of these materials, ordinary cutting tools are insufficient, necessitating the use of custom-made diamond tools. Even then, only small cutting depths can be used during grinding, resulting in significant tool wear. For certain refractory materials, high precision is required due to the precision of the equipment, particularly at beveled joints where a smooth transition without dents or sharp edges is necessary. Traditional processing methods are no longer adequate to meet these requirements.

[0003] The usual machining method is to set the tool on the plane where the inclined plane intersects and then perform machining after finding the center of the plane. However, when machining the inclined plane, due to the accumulation of various errors such as tool setting error, tool wear, and tool manufacturing error, the machined inclined plane itself has a certain error. At this time, the center of the inclined plane and the center of the plane are no longer collinear and have a certain offset. Machining according to the center of the plane will result in errors in the upper and lower radii of the fillets, which will produce a concave and angular phenomenon. The inclined plane cannot provide a tool setting plane.

[0004] To address the technical problem of existing methods for machining refractory arcs where the transition between the arc and the inclined surface is not smooth, resulting in concavities and sharp edges that fail to meet assembly requirements, there is an urgent need to find a new machining method for smooth transitions in refractory arcs. This method would eliminate errors in inclined surface machining, tool manufacturing, and tool setting, ensuring the machining accuracy of the arc, guaranteeing a smooth transition at the intersection of the arc and the inclined surface, improving the assembly accuracy of the product, and meeting usage requirements. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a processing method that ensures a smooth transition of the arc of refractory materials, so as to solve the technical problem that the existing processing method for the arc corner at the junction of the inclined surfaces of refractory materials cannot smoothly transition at the junction of the arc corner and the inclined surface, and is prone to concave and sharp corner phenomena, so that the processed material cannot meet the assembly requirements.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] This invention discloses a processing method to ensure a smooth transition of refractory materials in the arc shape, comprising the following steps:

[0008] 1) Measure the center lines of the upper and lower planes of the refractory material;

[0009] 2) A platform is machined at the junction of the upper and lower theoretical inclined surfaces of the refractory material;

[0010] 3) Move the tool to the center line of the plane, so that the tool arc is close to the intersection of the upper actual inclined plane and the lower actual inclined plane; the intersection of the upper actual inclined plane is the intersection of the upper actual inclined plane and the platform, and the intersection of the lower actual inclined plane is the intersection of the lower actual inclined plane and the platform.

[0011] 4) Locate the center line of the upper and lower actual inclined planes, move the tool to the center line of the inclined planes, and use the tool to perform arc machining on the intersection of the upper and lower actual inclined planes to obtain refractory material with smooth transition arc corners.

[0012] Preferably, in step 1), the method for measuring the center line of the plane is: half the thickness of the refractory material plane plus the distance from the center of the tool arc to the bottom surface.

[0013] Preferably, in step 4), the method for finding the center line of the inclined plane is as follows: when the intersection of the upper actual inclined plane first contacts the tool arc, the tool is moved upward until the intersection of the lower actual inclined plane contacts the tool arc, and then the upward movement of the tool is divided by 2 to obtain the position of the center line of the inclined plane.

[0014] Preferably, in step 4), the method for finding the center line of the inclined plane is as follows: when the lower actual inclined plane intersection edge first contacts the tool arc, the tool is moved down until the upper actual inclined plane intersection edge contacts the tool arc, and then the downward movement of the tool is divided by 2 to obtain the position of the center line of the inclined plane.

[0015] More preferably, in step 4), when the intersection of the upper and lower actual inclined planes leaves a scratch on the tool arc, it indicates that the tool arc has been contacted.

[0016] Preferably, in step 4), before finding the center line of the inclined plane, the theoretical values ​​of the contact angle between the tool arc and the upper actual inclined plane and the lower actual inclined plane are calculated in advance. When the tool is moved to a distance of 0.3mm from the theoretical value, the step distance is reduced, and the tool moves to the upper actual inclined plane and the lower actual inclined plane until one of the edges contacts the tool arc first.

[0017] Preferably, the two sides of the tool arc are provided with transition slopes that are tangent to the tool arc.

[0018] More preferably, the opening angle of the transition slope of the tool arc is greater than the arc angle of the refractory material slope to be machined.

[0019] More preferably, the opening angle of the transition slope of the tool arc is 0.5 to 1 degree greater than the arc angle of the slope of the refractory material to be machined.

[0020] Preferably, the length of the platform is greater than the radius of the tool arc and less than the diameter of the tool arc.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention discloses a processing method to ensure a smooth transition of the arc corner in refractory materials. First, the center lines of the upper and lower planes of the refractory material are measured to initially determine the tool placement position, minimizing the adjustment error of the tool arc. Then, a platform is machined at the intersection of the upper and lower theoretical inclined surfaces of the refractory material to facilitate the next step of machining the arc corner. Next, the tool is moved to the plane center line, bringing the tool arc close to the intersection of the upper and lower actual inclined surfaces. Preparation for machining the arc corner is then complete. Finally, the center lines of the upper and lower actual inclined surfaces are located, and the tool is moved to the center line. The tool arc is then used to machine the intersection of the upper and lower actual inclined surfaces to obtain refractory material with a smooth transition arc corner. This invention employs a novel processing method that eliminates tool setting errors, tool wear errors during inclined surface machining, and tool manufacturing errors by determining the inclined surface center. This ensures the machining accuracy of the arc corner of the refractory material and also meets the design requirement of a smooth transition at the intersection of the arc corner and the inclined surface, improving the assembly accuracy of the product and meeting usage requirements.

[0023] Furthermore, the two sides of the tool arc are provided with transition slopes that are tangent to the tool arc. The opening angle of the transition slope of the tool arc is greater than the arc angle of the refractory material slope to be machined. The opening angle of the transition slope of the tool arc is 0.5 to 1 degree greater than the arc angle of the refractory material slope to be machined. This can improve the accuracy of machining the arc, avoid interference with the slope during machining, and ensure that the arc is as tangent as possible to the slope, thus ensuring smoothness.

[0024] Furthermore, the length of the platform is greater than the radius of the tool arc but less than the diameter of the tool arc. If the platform length is too small, the center of the inclined plane cannot be determined. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a processing method for ensuring a smooth transition of refractory material by an arc, as disclosed in this invention. (a) is an overall schematic diagram, and (b) is a partial enlarged view of the arc processing point A on the inclined surface.

[0026] Wherein: 1-Refractory material; 2-Tool; 3-Upper theoretical slope; 4-Lower theoretical slope; 5-Upper actual slope; 6-Lower actual slope; 7-Slope centerline; 8-Plane centerline; A-Slope arc machining area; B-Distance between tool arc center and bottom plane; C-Removed portion at slope intersection; E-Intersection angle of upper actual slope; F-Intersection angle of lower actual slope; G-Tool arc; H-Platform; K-Refractory material plane thickness; L-Rounded transition slope with arc angle. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings:

[0030] This invention discloses a processing method to ensure a smooth transition of arcs in refractory materials, belonging to the field of refractory material machining technology. In the substrate glass project construction industry, various specifications of refractory materials need to be processed. Due to the precision requirements of equipment, the processing precision requirements of some materials are relatively high, especially the processing of the arc corner at the intersection of inclined surfaces. Due to the accumulation of various errors, the intersection of the arc and the inclined surface cannot be smoothly transitioned, resulting in concavity and sharp edges. This leads to insufficient equipment precision and failure to meet usage requirements. This invention addresses the issue of the inability to smoothly transition at the intersection of arcs and inclined surfaces in the processing of refractory materials, resulting in concavity and sharp edges. It proposes a processing method to ensure a smooth transition of arcs in refractory materials. This invention achieves this by changing the tool setting method, determining the center of the inclined surface, eliminating inclined surface processing errors, tool manufacturing errors, tool setting errors, and changing the opening size of the forming tool to process the arc. Using the cylindrical diamond grinding head of tool 2, a platform H is machined at the junction of the upper theoretical inclined plane 3 and the lower theoretical inclined plane 4. The shaded part is the part C removed at the junction of the inclined planes. After removing the shaded part, tool 2 is used to machine the required arc angle. Before machining, the plane center line 8 (dashed line) is found through the plane of refractory material 1. The method is to find the sum of half the thickness K of the refractory material plane and the distance B from the center of the tool arc to the bottom plane. Due to the machining error of the inclined plane, the actual inclined plane is the upper actual inclined plane 5 and the lower actual inclined plane 6. Therefore, the center line 7 of the inclined plane is not collinear with the center line 8 of the plane. The problem to be solved by this invention is how to find the center line 7 of the inclined plane. Since a platform H has been machined at the intersection of the inclined planes before the arc machining, two intersection points are generated between the platform H and the upper actual inclined plane 5 and the lower actual inclined plane 6, and the intersection angles E and F of the upper and lower actual inclined planes. The center of the tool arc G is first moved to the plane center line 8, and then the tool arc G is slowly moved to the intersection point of the upper actual inclined plane intersection angle E and the lower actual inclined plane intersection angle F. At this time, because the center of the tool arc G is not on the center 7 of the inclined plane, the upper actual inclined plane intersection angle E and the lower actual inclined plane intersection angle F cannot contact the tool arc G at the same time. If the upper actual inclined plane intersection angle E is contacted first, the tool 2 is moved up until the lower actual inclined plane intersection angle F contacts the tool arc G. At this time, the center line 7 of the inclined plane is determined according to half of the movement value of the tool 2. The center of the tool arc G is adjusted to the center line 7 of the inclined plane before machining. The formed cutting tool 2 has a curved transition slope L at the front of the tool arc G. By reducing the size of the opening slope, the problems of concavity and sharp edges in existing arc machining can be solved, making the junction of the arc and the slope smoother and avoiding problems caused by the arc not meeting design requirements during assembly. The machining method disclosed in this invention that ensures a smooth transition of arcs in refractory materials can be used for machining arc corners at the junction of slopes in various types of refractory materials.

[0031] This invention discloses a processing method to ensure a smooth transition of refractory materials in the form of arcs, specifically including the following steps:

[0032] 1) Using the plane of the refractory material to be processed 1, measure the center line 8 of the plane. Method: Measure half of the thickness K of the refractory material plane, and add the distance B from the center of the tool arc to the bottom surface to obtain the center line 8 of the plane. Due to the existence of tool setting error, tool manufacturing error, and tool wear during processing, the theoretical inclined plane is the upper theoretical inclined plane 3 and the lower theoretical inclined plane 4, and the actual inclined plane is the upper actual inclined plane 5 and the lower actual inclined plane 6. How to find the actual center line 7 of the inclined plane is the problem to be solved.

[0033] 2) Before machining the arc corner of refractory material 1, a platform H is machined at the junction of the upper actual inclined plane 5 and the lower actual inclined plane 6 using a cylindrical diamond grinding head. The shaded part is the part C removed at the junction of the inclined planes. The length of the platform H is greater than the radius of the tool arc G and less than the diameter of the tool arc G. If the length of the platform H is too small, the center line 7 of the inclined plane cannot be determined.

[0034] 3) After moving the tool 2 to the center line 8 of the plane, minimize the adjustment error of the tool arc G. Move the tool arc G close to the intersection point of the platform H with the upper actual slope 5 and the lower actual slope 6, specifically the intersection angle E and the intersection angle F of the upper and lower actual slopes. Based on the slope angle, platform size, and tool arc size, calculate in advance the theoretical value of the contact point between the tool arc G and the intersection angles E and F of the actual slopes. When the tool 2 is moved 0.3mm away from the theoretical value, move it towards the intersection angles E and F of the actual slopes using a small step distance.

[0035] 4) The tool arc G cannot simultaneously contact the intersection angle E of the upper actual inclined plane and the intersection angle F of the lower actual inclined plane because the plane centerline 8 and the inclined plane centerline 7 are not collinear. If the intersection angle E of the upper actual inclined plane contacts the tool arc G first, the tool 2 is moved upward. When the tool moves upward, the step distance is also a small step distance until the intersection angle F of the lower actual inclined plane contacts the tool arc G. Then, the movement amount of the tool 2 is divided by 2 to obtain the position of the inclined plane centerline 7, and vice versa. When the intersection point of the inclined plane of the refractory material 1 contacts the tool arc G, a light scratch will be left on the surface of the diamond tool arc G, indicating that the tool arc G has been contacted.

[0036] 5) After moving the tool arc G to the position of the inclined plane center line 7, the arc corner is then machined. This eliminates tool setting error, inclined plane machining error, and tool manufacturing error.

[0037] 6) Reduce the opening size of the arc transition slope L of the tool arc G. The opening angle of the arc transition slope L should be 0.5 to 1 degree greater than the arc angle of the slope to be machined. This can avoid interference with the slope during machining, make the arc of the tool 2 and the arc transition slope L as tangent as possible, ensure smoothness, improve the accuracy of the machined arc, and make the arc transition of the refractory material 1 smoother, so as to obtain a refractory material with a smooth transition arc angle.

[0038] This invention employs a novel processing method that eliminates tool setting errors, tool wear errors, and tool manufacturing errors by determining the center of the inclined plane. This ensures the processing accuracy of the arc corner and also meets the design requirement of a smooth transition at the intersection of the arc corner and the inclined plane, thereby improving the assembly accuracy of the product and meeting usage requirements.

[0039] See Figure 1 This is a schematic diagram of a processing method for ensuring a smooth transition of the arc of refractory material, as disclosed in this invention. (a) is an overall schematic diagram, and (b) is a magnified view of a portion of the arc-shaped section A of the inclined surface. As can be seen from the diagram, the processing method for ensuring a smooth transition of the arc of refractory material includes: first, using the plane of refractory material 1 as the tool setting plane, measuring the center line 8 of the plane. Specifically, the thickness K of the refractory material plane is measured, and half of the thickness K is added to the distance B from the center of the tool arc to the bottom surface to obtain the center line 8. Due to tool setting errors, tool manufacturing errors, and tool wear during processing, the upper theoretical inclined surface 3 and the lower theoretical inclined surface 4 are theoretical inclined surfaces, while the upper actual inclined surface 5 and the lower actual inclined surface 6 are actual inclined surfaces. Before processing the arc angle of refractory material 1, a platform H is machined at the intersection of the upper actual inclined surface 5 and the lower actual inclined surface 6 using a cylindrical diamond grinding head. The shaded area represents the portion C removed at the intersection of the inclined surfaces. After moving tool 2 to the plane centerline 8, bring tool arc G close to the intersection points of the upper and lower actual inclined planes 5 and 6 with platform H: the intersection angles E and F of the upper and lower actual inclined planes. Tool arc G cannot simultaneously contact both intersection angles E and F because the plane centerline 8 and the inclined plane centerline 7 are not collinear. If the upper actual inclined plane intersection angle E contacts tool arc G first, move tool 2 upwards until the lower actual inclined plane intersection angle F contacts tool arc G. Then divide the movement of tool 2 by 2 to obtain the position of the inclined plane centerline 7, and vice versa. After moving tool arc G to the position of the inclined plane centerline 7, then machine the arc corner. This eliminates tool setting errors, inclined plane machining errors, and tool manufacturing errors. By reducing the opening size of the transition slope L of the tool arc G, the tool arc G and the transition slope L are made tangent, improving the accuracy of machining the arc and making the transition of the arc angle smoother. This invention solves the problem of uneven transition at the intersection of the arc angle and the slope, resulting in concave and angular phenomena.

[0040] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A method for ensuring smooth transition of a refractory circular arc, characterized in that, The method comprises the following steps: 1) measuring the plane center line (8) of the upper and lower planes of the refractory (1); the measuring method of the plane center line (8) is: half of the plane thickness (K) of the refractory plus the distance (B) from the center of the tool arc to the bottom surface; 2) processing a platform (H) at the intersection of the upper theoretical inclined surface (3) and the lower theoretical inclined surface (4) of the refractory (1); 3) moving the tool (2) to the plane center line (8), so that the tool arc (G) is close to the upper actual inclined surface intersection corner (E) and the lower actual inclined surface intersection corner (F); the upper actual inclined surface intersection corner (E) is the intersection of the upper actual inclined surface (5) and the platform (H), and the lower actual inclined surface intersection corner (F) is the intersection of the lower actual inclined surface (6) and the platform (H); 4) finding the inclined surface center line (7) of the upper actual inclined surface (5) and the lower actual inclined surface (6), moving the tool (2) to the inclined surface center line (7), and using the tool arc (G) to process the upper actual inclined surface intersection corner (E) and the lower actual inclined surface intersection corner (F) to obtain the refractory with smooth transition arc corners; wherein the tool (2) comprises a cylindrical diamond grinding head and a tool arc (G) above the cylindrical diamond grinding head; both sides of the tool arc (G) are provided with transition inclined surfaces (L) tangent to the tool arc (G); the opening angle of the transition inclined surface (L) of the tool arc (G) is greater than the arc corner angle of the inclined surface of the refractory to be processed; the length of the platform (H) is greater than the radius of the tool arc (G) and less than the diameter of the tool arc (G); wherein in step 4), the method for finding the inclined surface center line (7) is: when the upper actual inclined surface intersection corner (E) first contacts the tool arc (G), the tool (2) is moved upward until the lower actual inclined surface intersection corner (F) contacts the tool arc (G), and then the upward movement amount of the tool (2) is divided by 2 to obtain the position of the inclined surface center line (7); alternatively, the method for finding the inclined surface center line (7) is: when the lower actual inclined surface intersection corner (F) first contacts the tool arc (G), the tool (2) is moved downward until the upper actual inclined surface intersection corner (E) contacts the tool arc (G), and then the downward movement amount of the tool (2) is divided by 2 to obtain the position of the inclined surface center line (7); wherein the upper theoretical inclined surface (3) and the lower theoretical inclined surface (4) are symmetrical inclined surfaces; the upper actual inclined surface (5) and the lower actual inclined surface (6) are symmetrical inclined surfaces.

2. The method of claim 1, wherein the method further comprises: In step 4), when the upper actual inclined surface intersection corner (E) or the lower actual inclined surface intersection corner (F) leaves a scratch on the tool arc (G), it indicates that the tool arc (G) has been contacted.

3. The method of claim 1, wherein the method further comprises: In step 4), before finding the inclined surface center line (7), the theoretical value of the contact between the tool arc (G) and the upper actual inclined surface intersection corner (E) and the lower actual inclined surface intersection corner (F) is calculated in advance, the tool is moved to a distance of 0.3mm from the theoretical value, the step distance is reduced, and the tool is moved towards the upper actual inclined surface intersection corner (E) and the lower actual inclined surface intersection corner (F) until one corner contacts the tool arc (G).

4. The method of claim 1, wherein the method further comprises: The opening angle of the transition slope (L) of the tool circular arc (G) is greater than the circular arc angle of the refractory material slope by 0.5-1 degrees.

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