Processing equipment and processing method for flanged cylinders

Abstract

This disclosure provides a processing apparatus and method for flanging cylinders, belonging to the field of machining. The processing apparatus for flanging cylinders includes a spinning machine and a spinning die. The spinning machine includes a main shaft, a transition assembly, and a spinning device. The main shaft and the transition assembly are coaxially connected, and the spinning device is located on the side of the transition assembly facing away from the main shaft. The spinning die includes an inner support cylinder and an outer support cylinder. The inner support cylinder is coaxially located inside the outer support cylinder. A cylinder body gap exists between the outer wall of the inner support cylinder and the inner wall of the outer support cylinder. The inner and outer support cylinders are respectively connected to the portions of the transition assembly facing away from the main shaft. A flanging gap exists between the outer support cylinder and the transition assembly, and the flanging gap communicates with the cylinder body gap. This disclosure can improve manufacturing efficiency and reduce manufacturing costs when manufacturing flanged cylinders.

Description

Technical Field

[0001] This disclosure pertains to the field of machining, and specifically relates to a machining apparatus and method for flanging cylinders. Background Technology

[0002] The gas turbine casing is one of the important components of a gas turbine, and it contains many thin-walled, irregularly shaped parts.

[0003] In related technologies, traditional stamping processes are used to manufacture thin-walled irregular parts. First, a corresponding mold is made according to the required thin-walled irregular parts, and then the stamping process is used to manufacture the thin-walled irregular parts.

[0004] However, the molds used in the stamping process to manufacture thin-walled irregular parts in related technologies are expensive, and one mold can only produce one thin-walled irregular part, resulting in low production efficiency. Summary of the Invention

[0005] This disclosure provides a processing apparatus and method for flanging cylinders, which can improve manufacturing efficiency and reduce manufacturing costs when producing flanged cylinders. The technical solution is as follows:

[0006] This disclosure provides a processing apparatus for flanging cylinders, including a spinning machine and a spinning die. The spinning machine includes a main shaft, a transition assembly, and a spinning device. The main shaft is coaxially connected to the transition assembly, and the spinning device is located on the side of the transition assembly facing away from the main shaft. The spinning die includes an inner support cylinder and an outer support cylinder. The inner support cylinder is coaxially located inside the outer support cylinder. A cylinder body gap exists between the outer wall of the inner support cylinder and the inner wall of the outer support cylinder. The inner support cylinder and the outer support cylinder are respectively connected to the portions of the transition assembly facing away from the main shaft. A flanging gap exists between the outer support cylinder and the transition assembly, and the flanging gap communicates with the cylinder body gap.

[0007] In one implementation of this disclosure, the transition assembly includes an adapter cylinder and a transition flange. One end of the adapter cylinder is coaxially connected to one side of the transition flange, and the other end is coaxially connected to the main shaft. The other side of the transition flange is coaxially connected to both the inner support cylinder and the outer support cylinder.

[0008] In another implementation of this disclosure, the transition flange includes a ring body and a convex ring. The convex ring is located on the side of the ring body away from the transition cylinder, and the convex ring is coaxial with the ring body. The inner support cylinder is located inside the convex ring, and the outer wall of the inner support cylinder is in clearance fit with the inner wall of the convex ring. The outer support cylinder is sleeved outside the convex ring, and the inner wall of the outer support cylinder is in clearance fit with the outer wall of the convex ring.

[0009] In another implementation of this disclosure, the inner support cylinder has a plurality of clamping screws, all of which are inserted into the inner support cylinder, and one end of each clamping screw is located within the gap between the cylinder body and the cylinder body.

[0010] In another implementation of this disclosure, the outer support cylinder includes a first semi-cylinder and a second semi-cylinder. Both the first semi-cylinder and the second semi-cylinder are detachably coaxially connected to the transition assembly.

[0011] This disclosure also provides a method for processing a flanged cylinder. Based on the processing apparatus described above, the method includes: providing a cylindrical blank; clamping the cylindrical blank into a spinning die, such that the body of the cylindrical blank is located within the body gap, and the first end of the cylindrical blank is located outside the spinning die; spinning the first end of the cylindrical blank using the spinning device to form a first flange; adjusting the clamping posture of the cylindrical blank within the spinning die, such that the body of the cylindrical blank is located within the body gap, the first flange of the cylindrical blank is located within the flange gap, and the second end of the cylindrical blank is located outside the spinning die; spinning the second end of the cylindrical blank using the spinning device to form a second flange.

[0012] In one implementation of this disclosure, the first end of the cylindrical blank is spun by the spinning device to form a first flange, comprising: simulating the trajectory of the spinning wheel of the spinning device, the trajectory of the spinning wheel passing sequentially through a starting point, a pressing point, and an ending point, the starting point being located outside the spinning die, the pressing point being located at the axial midpoint of the outer supporting cylinder, and the ending point being located outside the spinning die. The first end of the cylindrical blank is spun according to the spinning wheel trajectory to form the first flange.

[0013] In another implementation of this disclosure, the spindle rotates at a speed of 70-90 r / min, the feed rate is 25-35 mm / min, and the gap between the spinning wheel of the spinning device and the end face of the outer support cylinder away from the transition component is 0.7-0.9 mm.

[0014] In another implementation of this disclosure, before simulating the trajectory of the spinning wheel of the spinning device, the method further includes: performing radial tool setting and axial tool setting on the spinning device, respectively, wherein the reference for radial tool setting is the inner wall of the outer support cylinder, and the reference for axial tool setting is the end face of the outer support cylinder away from the transition component.

[0015] In another implementation of this disclosure, adjusting the clamping posture of the cylindrical blank within the spinning die includes: opening the spinning die and removing the cylindrical blank from the spinning die; re-inserting the cylindrical blank into the spinning die and closing the spinning die, such that the first flange is located within the flange gap and the second end of the cylindrical blank is located outside the spinning die; checking the distance between the end face of the second end of the cylindrical blank and the end face of the outer support cylinder away from the transition component; if the checked distance is less than the design value, adjusting the cylindrical blank outward along the axial direction of the outer support cylinder; if the checked distance is greater than the design value, adjusting the cylindrical blank inward along the axial direction of the outer support cylinder.

[0016] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0017] When making a flanged cylinder using a cylindrical blank, the transition assembly connected to the main shaft is coaxially connected to the spinning die, allowing the spinning die to rotate coaxially with the main shaft. Furthermore, because there is a gap between the outer wall of the inner supporting cylinder and the inner wall of the outer supporting cylinder within the spinning die, the cylinder body of the blank to be processed can be accommodated within this gap, thus fixing the blank in the spinning die. At this point, the first end of the cylindrical blank is outside the spinning die. The rotation of the main shaft drives the transition assembly and the spinning die to rotate simultaneously, and the spinning device begins to spin the first end of the cylindrical blank, forming a flanged edge. After completing the flanging of the first end of the cylindrical blank, the blank can be removed from the spinning die and turned around, allowing the cylinder body to be repositioned and fixed within the gap. Because there is a flanging gap between the outer supporting cylinder and the transition assembly, and this flanging gap is connected to the cylinder body gap, the processed flanged edge can be accommodated within this gap. Then, the second end of the cylindrical blank is flanged to obtain a flanged cylinder with flanges on both ends. Because the method of fixing the cylindrical blank is simple and the turning efficiency is high during processing, the production efficiency of the flanged cylinder can be improved.

[0018] In other words, the processing device for the flanged cylinder can improve production efficiency and reduce production costs when making flanged cylinders. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the structure of the processing device for the flanged cylinder provided in the embodiments of this disclosure;

[0021] Figure 2 This is a schematic diagram of the structure of the spinning die provided in the embodiments of this disclosure;

[0022] Figure 3 This is a flowchart of the processing method for a flanged cylinder provided in an embodiment of this disclosure;

[0023] Figure 4 This is a schematic diagram of the processing of the flanged cylinder provided in the embodiments of this disclosure;

[0024] Figure 5 This is a flowchart of another processing method for a flanged cylinder provided in this embodiment of the present disclosure;

[0025] Figure 6 This is a schematic diagram of the process of rolling a cylinder according to an embodiment of the present disclosure;

[0026] Figure 7 This is a schematic diagram illustrating the use of the throat clamp provided in this embodiment of the disclosure;

[0027] Figure 8 This is a partial structural schematic diagram of the cylindrical blank provided in an embodiment of this disclosure;

[0028] Figure 9 This is a schematic diagram illustrating the use of the arc-starting plate and the arc-extinguishing plate provided in the embodiments of this disclosure;

[0029] Figure 10 This is a schematic diagram of the welding process for the merging assembly edges provided in an embodiment of this disclosure;

[0030] Figure 11 This is a schematic diagram of the structure of the cylindrical blank provided in the embodiments of this disclosure;

[0031] Figure 12 This is a schematic diagram of the wheel trajectory provided in an embodiment of this disclosure;

[0032] Figure 13 This is a schematic diagram of the cylindrical blank adjustment process provided in the embodiments of this disclosure;

[0033] Figure 14 This is a schematic diagram of the structure of the flanged cylinder provided in the embodiments of this disclosure.

[0034] The symbols in the diagram represent the following meanings:

[0035] 10. Spinning machine;

[0036] 110. Spindle; 120. Transition assembly; 121. Adapter cylinder; 122. Transition flange; 1221. Ring body; 1222. Convex ring; 130. Spinning device;

[0037] 20. Spinning die;

[0038] 210. Inner support cylinder; 211. Clamping screw; 220. Outer support cylinder; 221. First semi-cylinder; 222. Second semi-cylinder; 230. Cylinder body clearance; 240. Flanged clearance;

[0039] 100. Cylindrical blank;

[0040] 200. First flip;

[0041] 300. Second flip-over;

[0042] 400, Sample;

[0043] 500. Throat clamp;

[0044] 600. Arc-starting plate;

[0045] 700. Arc extinguishing plate;

[0046] 800, wooden blocks;

[0047] A. Starting point;

[0048] B. Initial pressure point;

[0049] C. Termination point. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0051] Figure 1 This is a schematic diagram of the structure of the processing device for the flanged cylinder provided in the embodiments of this disclosure, as shown below. Figure 1 As shown, this embodiment of the present disclosure provides a processing apparatus for flanging cylinders, including a spinning machine 10 and a spinning die 20. The spinning machine 10 includes a main shaft 110, a transition assembly 120, and a spinning device 130. The main shaft 110 is coaxially connected to the transition assembly 120, and the spinning device 130 is located on the side of the transition assembly 120 facing away from the main shaft 110. The spinning die 20 includes an inner support cylinder 210 and an outer support cylinder 220. The inner support cylinder 210 is coaxially located inside the outer support cylinder 220. A cylinder body gap 230 is formed between the outer wall of the inner support cylinder 210 and the inner wall of the outer support cylinder 220. The inner support cylinder 210 and the outer support cylinder 220 are respectively connected to the portion of the transition assembly 120 facing away from the main shaft 110. A flanging gap 240 is formed between the outer support cylinder 220 and the transition assembly 120, and the flanging gap 240 communicates with the cylinder body gap 230.

[0052] When using the cylindrical blank 100 to make a flanged cylinder, since the transition component 120 connected to the main shaft 110 is coaxially connected to the spinning die 20, the spinning die 20 can rotate coaxially with the main shaft 110. Furthermore, since there is a cylinder body gap 230 between the outer wall of the inner supporting cylinder 210 and the inner wall of the outer supporting cylinder 220 within the spinning die 20, the cylinder body of the cylindrical blank 100 to be processed can be accommodated in the cylinder body gap 230, and the cylindrical blank 100 is fixed in the spinning die 20. At this time, the first end of the cylindrical blank 100 is located outside the spinning die 20. The rotation of the main shaft 110 drives the transition component 120 and the spinning die 20 to rotate simultaneously, and the spinning device 130 begins to spin the first end of the cylindrical blank 100, causing the first end of the cylindrical blank 100 to form a flange. After the first end of the cylindrical blank 100 is flanged, it can be removed from the spinning die and turned around, so that the cylinder body of the cylindrical blank 100 is again accommodated and fixed in the cylinder body gap 230. Since there is a flanging gap 240 between the outer support cylinder 220 and the transition component 120, and the flanging gap 240 is connected to the cylinder body gap 230, the processed flanging can be accommodated in the flanging gap 240. Then, the second end of the cylindrical blank 100 is spun and flanged to obtain a flanged cylinder with flanging at both ends. Because the fixing method of the cylindrical blank 100 is simple and the turning efficiency is high during processing, the production efficiency of the flanged cylinder can be improved.

[0053] In other words, the processing device for the flanged cylinder can improve production efficiency and reduce production costs when making flanged cylinders.

[0054] See also Figure 1 In this embodiment, the transition assembly 120 includes an adapter cylinder 121 and a transition flange 122. One end of the adapter cylinder 121 is coaxially connected to one side of the transition flange 122, and the other end is coaxially connected to the main shaft 110. The other side of the transition flange 122 is coaxially connected to both the inner support cylinder 210 and the outer support cylinder 220.

[0055] Because one side of the transition flange 122 is coaxially connected to the inner support cylinder 210 and the outer support cylinder 220 that make up the spinning die 20, when the main shaft 110 of the spinning machine 10 rotates, the transition component 120 connected to the main shaft 110 will rotate accordingly. Therefore, by fixing the inner support cylinder 210 and the outer support cylinder 220 coaxially to one side of the transition flange 122, the main shaft 110 of the spinning machine 10 can drive the spinning die 20 to rotate coaxially together.

[0056] See also Figure 1For example, the transition flange 122 has multiple screw holes on the side near the adapter cylinder 121. The transition flange 122 is detachably fixed to the side of the adapter cylinder 121 away from the main shaft 110 by means of screw hole connection. The transition flange 122 has two sets of screw holes on the side near the spinning die 20. Each of these two sets of screw holes has multiple screw holes. One set of screw holes faces the end face of the outer support cylinder 220 near the transition flange 122, and the other set of screw holes faces the end face of the inner support cylinder 210 near the transition flange 122. Therefore, the outer support cylinder 220 and the inner support cylinder 210 can be fixedly connected to the transition flange 122 by means of screw hole connection. Thus, when the main shaft 110 rotates, the transition flange 122 can drive the outer support cylinder 220 and the inner support cylinder 210 to rotate simultaneously.

[0057] In this embodiment, the transition flange 122 includes a ring body 1221 and a convex ring 1222. The convex ring 1222 is located on the side of the ring body 1221 away from the transition cylinder 121, and the convex ring 1222 is coaxial with the ring body 1221. The inner support cylinder 210 is located inside the convex ring 1222, and the outer wall of the inner support cylinder 210 is in clearance fit with the inner wall of the convex ring 1222. The outer support cylinder 220 is sleeved on the outside of the convex ring 1222, and the inner wall of the outer support cylinder 220 is in clearance fit with the outer wall of the convex ring 1222.

[0058] Because the outer wall of the inner support cylinder 210 is clearance-fitted with the inner wall of the convex ring 1222, and the inner wall of the outer support cylinder 220 is clearance-fitted with the outer wall of the convex ring 1222, and the convex ring 1222 is located on the side of the ring body 1221 away from the transition cylinder 121, the convex ring 1222 can be used to achieve a positioning connection between the outer support cylinder 220 and the inner support cylinder 210. This allows the transition flange 122 to achieve higher connection accuracy when it is coaxially connected with the outer support cylinder 220 and the inner support cylinder 210, and better maintains that the outer support cylinder 220 and the inner support cylinder 210 are coaxially connected to the transition flange 122.

[0059] See also Figure 1 It is worth noting that the side of the outer support cylinder 220 near the transition flange 122 also has a recessed part that is opposite to the convex ring 1222 of the transition flange 122. When the outer support cylinder 220 and the transition flange 122 are coaxially connected, the convex ring 1222 is first fitted together with the recessed part on the outer support cylinder 220, so as to achieve coaxial positioning of the outer support cylinder 220 and the transition flange 122.

[0060] See also Figure 1 In this embodiment, the inner support cylinder 210 has a plurality of clamping screws 211, all of which are inserted into the inner support cylinder 210, with one end of the clamping screw 211 located within the cylinder body gap 230.

[0061] Because the inner support cylinder 210 has multiple clamping screws 211 inserted into it, and one end of the clamping screw 211 is located in the cylinder body gap 230, and the cylinder body gap 230 is used to accommodate the cylinder body of the cylindrical blank 100, the cylinder body of the cylindrical blank 100 accommodated in the cylinder body gap 230 can be held in place by the clamping screws 211. The cylinder body of the cylindrical blank 100 will also abut against the inner wall surface of the outer support cylinder 220, thereby realizing the clamping and fixing operation of the cylindrical blank 100 to be processed in the spinning die 20.

[0062] Figure 2 This is a schematic diagram of the spinning die 20 provided in the embodiments of this disclosure, as shown below. Figure 2 As shown, in this embodiment, the outer support cylinder 220 includes a first semi-cylinder 221 and a second semi-cylinder 222. Both the first semi-cylinder 221 and the second semi-cylinder 222 are detachably coaxially connected to the transition assembly 120.

[0063] Because the outer support cylinder 220 is divided into a first half-cylinder 221 and a second half-cylinder 222, and both the first half-cylinder 221 and the second half-cylinder 222 can be detachably coaxially connected to the transition component 120, it is convenient for the cylinder blank 100 to be disassembled, oriented and installed in the spinning die 20.

[0064] For example, when the cylindrical blank 100 needs to be installed or its direction adjusted, it is only necessary to remove the first half-cylinder 221 or the second half-cylinder 222 to turn the cylindrical blank 100 around so that the two end faces of the cylindrical blank 100 can be flanged, thereby improving the efficiency of production.

[0065] Figure 3 This is a flowchart of the processing method for a flanged cylinder provided in this embodiment of the disclosure, as follows: Figure 3 As shown, based on the above-described processing apparatus, the manufacturing method includes the following steps.

[0066] Step 101: Provide a cylindrical blank 100.

[0067] Step 102: Clamp the cylindrical blank 100 into the spinning die 20, so that the cylindrical body of the cylindrical blank 100 is located within the cylindrical body gap 230, and the first end of the cylindrical blank 100 is located outside the spinning die 20.

[0068] Step 103: Spin the first end of the cylindrical blank 100 by the spinning device 130 to form the first flange 200.

[0069] Step 104: Adjust the clamping posture of the cylindrical blank 100 in the spinning die 20 so that the cylindrical body of the cylindrical blank 100 is located within the cylindrical body gap 230, the first flange 200 of the cylindrical blank 100 is located within the flange gap 240, and the second end of the cylindrical blank 100 is located outside the spinning die 20.

[0070] Step 105: Spin the second end of the cylindrical blank 100 by the spinning device 130 to form the second flange 300.

[0071] Figure 4 This is a schematic diagram of the processing of the flanged cylinder provided in the embodiments of this disclosure, combined with... Figure 4 A cylindrical blank 100 is obtained by rolling, and the cylindrical body portion of the cylindrical blank 100 is accommodated in the cylindrical body gap 230. The cylindrical blank 100 is clamped and fixed in the spinning die 20. After the cylindrical blank 100 is clamped in the spinning die 20, since the first end of the cylindrical blank 100 is located outside the spinning die 20, the first end of the cylindrical blank 100 can be spun by the spinning device 130 to form the first flange 200. Remove the cylindrical blank 100 that has been spun once from the spinning die 20, turn it around and adjust its direction. After adjusting the direction of the cylindrical blank 100, make the cylinder body of the cylindrical blank 100 located within the cylinder body gap 230, the first flange 200 of the cylindrical blank 100 located within the flange gap 240, and the second end of the cylindrical blank 100 located outside the spinning die 20. Then, spin the second end of the cylindrical blank 100 through the spinning device 130 to form the second flange 300, and finally obtain a flanged cylinder with flanges on both ends.

[0072] Figure 5 This is a flowchart of another processing method for a flanged cylinder provided in this disclosure embodiment. See also... Figure 5 In this embodiment, the manufacturing method includes:

[0073] Step 201: Provide a cylindrical blank 100.

[0074] For example, step 201 is achieved through the following steps.

[0075] Step 2011: Provide blanking material. Cut the blanking material using laser cutting. After the blanking material is cut, check whether there are sharp edges and burrs on the free edge. If there are sharp edges and burrs, use a file to grind them off.

[0076] Step 2012: Use a plate rolling machine to roll the cut and polished blank into a cylindrical blank 100. During the rolling process, a template 400 is also provided. While rolling, the gap between the template 400 and the cylindrical blank 100 is checked using the template 400. If the gap between the template 400 and the cylindrical blank 100 is less than 10mm, the rolling is considered qualified. Figure 6 This is a schematic diagram of the process of rolling a cylinder according to an embodiment of this disclosure. See also... Figure 6 ).

[0077] Step 2013: Grind the assembly edge on the rolled cylindrical blank 100 with an electro-alumina grinding wheel until a metallic luster is visible within 20mm of the assembly edge. Use degreased cotton soaked in acetone to wipe and clean the grease within 25mm of the assembly edge until no black residue is visible after wiping with a white silk cloth.

[0078] Step 2014: Provide two throat clamps 500, and use the throat clamps 500 to clamp and fix the ends at both ends of the assembled edge along the length direction, i.e., at both ends of the cylindrical blank 100. Figure 7 This is a schematic diagram of the use of the throat clamp 500 provided in this embodiment of the disclosure, for reference. Figure 7 ).

[0079] Step 2015: Use manual tungsten inert gas welding to perform tack welding on the assembled edge. The tack welding should be located on the outer circumference of the cylindrical blank, with a height of 1-2mm.

[0080] Figure 8 This is a partial structural schematic diagram of the flanged cylinder provided in an embodiment of this disclosure. See also... Figure 8 It is worth noting that after the positioning welding of the assembled edges is completed, the assembly gap b and the plate thickness misalignment p of the assembled edges are checked to ensure that the assembly gap b is within the range of 0-2mm and the width misalignment p is not greater than 1mm.

[0081] Step 2016: Provide an arc-starting plate 600 and an arc-extinguishing plate 700, and add an arc-starting plate 600 and an arc-extinguishing plate 700 to both ends of the weld. Figure 9 This is a schematic diagram of the use of the arc-starting plate 600 and the arc-extinguishing plate 700 provided in the embodiments of this disclosure. See also Figure 9 ).

[0082] Step 2017: Weld the assembled edges using manual tungsten inert gas (TIG) welding. Two wooden blocks 800 are provided to secure the cylindrical blank 100 before welding, preventing it from rolling during the welding process. From the start of the arc on the arc-starting plate 600 to the end of the arc on the arc-extinguishing plate 700, the length of the cap weld on the arc-starting plate 600 and the arc-extinguishing plate 700 must be no less than 10mm. Weld one pass on the front of the cylindrical blank 100 and perform a root cleaning weld on the back. During the welding process, air is continuously introduced into the welding area. Figure 10 This is a schematic diagram of the welding process for the joining and assembly edges provided in an embodiment of this disclosure. See also... Figure 10 ).

[0083] Step 2018: Remove the throat clamp 500, arc-starting plate 600 and arc-extinguishing plate 700, and grind all welds to achieve a smooth transition.

[0084] Step 2019: Anneal the cylindrical blank 100 and check its ellipticity, part thickness δ, average outer diameter D, and part height H. Figure 11 This is a schematic diagram of the structure of the cylindrical blank provided in the embodiments of this disclosure, see below. Figure 11 ).

[0085] It is worth noting that when checking the ellipticity of the cylindrical blank, the maximum ellipticity difference should be less than 5mm, the part thickness δ should be within the range of 0.93-1.07mm, the average outer diameter D should be within the range of 447-449mm, and the part height H should be within the range of 186-190mm.

[0086] Step 202: Clamp the cylindrical blank 100 into the spinning die 20, so that the cylindrical body of the cylindrical blank 100 is located within the cylindrical body gap 230, and the first end of the cylindrical blank 100 is located outside the spinning die 20.

[0087] Combination Figure 4 It is worth noting that after placing the cylindrical blank 100 in the cylindrical body gap 230, one end of the clamping screw 211 inserted into the inner support cylinder 210 abuts against the inner wall surface of the cylindrical blank 100, and the outer wall surface of the cylindrical blank 100 abuts against the inner arc surface of the outer support cylinder 220, thus fixing the cylindrical blank 100 to be processed.

[0088] Step 203: Spin the first end of the cylindrical blank 100 by the spinning device 130 to form the first flange 200.

[0089] For example, step 203 is achieved through the following steps.

[0090] Step 2031: Check the dimensions of the cylindrical blank 100, and check whether there are sharp edges and burrs on the free edge. If there are sharp edges and burrs, grind them off.

[0091] Step 2032: Perform radial and axial tool setting on the spinning device 130 respectively. The reference for radial tool setting is the inner wall of the outer support cylinder 220, and the reference for axial tool setting is the end face of the outer support cylinder 220 away from the transition assembly 120 (see again). Figure 1 ).

[0092] Step 2033: Simulate the trajectory of the spinning wheel of the spinning device 130. The trajectory of the spinning wheel passes sequentially through the starting point A, the initial pressing point B, and the ending point C. The starting point A is located outside the spinning die 20, the initial pressing point B is located at the axial midpoint of the outer support cylinder 220, and the ending point C is located outside the spinning die 20. Figure 12 This is a schematic diagram of the wheel trajectory provided in an embodiment of this disclosure. See also: Figure 12 ).

[0093] Step 2034: Check the surface of the spinning die 20 for iron filings and burrs. If there are iron filings and burrs, remove them from the surface of the spinning die 20.

[0094] Step 2035: Spin the first end of the cylindrical blank 100 clamped in the spinning die 20 to form the first flange 200.

[0095] It is worth noting that before spinning, machine oil is applied to the surface of the cylindrical blank 100 to be spun and the spinning device 130. During spinning, the spindle 110 rotates at 70-90 r / min, the feed speed is 25-35 mm / min, and the gap between the spinning wheel of the spinning device 130 and the end face of the outer support cylinder 220 away from the transition component 120 is 0.7-0.9 mm.

[0096] Step 204: Adjust the clamping posture of the cylindrical blank 100 in the spinning die 20. Figure 13 This is a schematic diagram of the cylindrical blank adjustment process provided in the embodiments of this disclosure. See also: Figure 13 ).

[0097] For example, step 204 is implemented through the following steps.

[0098] Step 2041: Open the spinning die 20 and remove the cylindrical blank 100 from the spinning die 20.

[0099] Step 2042: Put the cylindrical blank 100 into the spinning die 20 again and close the spinning die 20 so that the first flange 200 of the cylindrical blank 100 is located within the flange gap 240 and the second end of the cylindrical blank 100 is located outside the spinning die 20.

[0100] Step 2043: Check the distance between the end face of the second end of the cylindrical blank 100 and the end face of the outer support cylinder 220 away from the transition component 120. If the distance is less than the design value, adjust the cylindrical blank 100 outward along the axial direction of the outer support cylinder 220. If the distance is greater than the design value, adjust the cylindrical blank 100 inward along the axial direction of the outer support cylinder 220.

[0101] For example, check whether the distance between the end face of the second end of the cylindrical blank 100 and the end face of the outer supporting cylinder 220 away from the transition assembly 120 is 7-8 mm. If the distance is less than 7 mm, adjust the cylindrical blank 100 to extend outward along the axial direction of the outer supporting cylinder 220. If the distance is greater than 8 mm, adjust the cylindrical blank 100 to push inward along the axial direction of the outer supporting cylinder 220.

[0102] Step 205: Spin the second end of the cylindrical blank 100 by the spinning device 130 to form the second flange 300.

[0103] In the above implementation, when spinning the second end of the cylindrical blank 100, oil is applied to both the surface of the cylindrical blank 100 to be spun and the spinning device 130 before spinning. During spinning, the spindle 110 rotates at 70-90 r / min, the feed speed is 25-35 mm / min, and the gap between the spinning wheel of the spinning device 130 and the end face of the outer support cylinder 220 away from the transition component 120 is 0.7-0.9 mm.

[0104] Step 206: Cut off the excess material from the flange ( Figure 14 This is a schematic diagram of the structure of the flanged cylinder provided in the embodiments of this disclosure, see below. Figure 14 ).

[0105] For example, after spinning the two ends of the cylindrical blank 100 to obtain the first flange 200 and the second flange 300, the excess is cut off from both the first flange 200 and the second flange 300. The excess is removed from the first flange 200 and the second flange 300 in the radial direction to obtain the first flange 200 and the second flange 300 of appropriate size, thereby obtaining the flanged cylinder after processing.

[0106] Step 207: Check the forming dimensions of the flanged cylinder and perform full dye penetrant testing on all welds on the surface of the flanged cylinder.

[0107] See you again Figure 14 For example, after obtaining the processed cylinder, it is necessary to check whether the forming dimensions of the flanged cylinder are qualified. The radius of the rounded corners of the first flange 200 and the second flange 300 of the cylinder is qualified if it is within the range of 4.4mm-4.6mm. The diameter of the cylinder is qualified if it is within the range of 174-175mm. The inner cylinder length is qualified if it is within the range of 445.5-446.5mm. The outer cylinder length is qualified if it is within the range of 456.5-457.5mm.

[0108] For example, all welds on the surface of the cylinder are subjected to full dye penetrant testing. If all welds meet the Level II qualification in NB / T47013.5-2015, the weld is qualified. If any weld does not meet the Level II qualification in NB / T47013.5-2015, the weld is unqualified.

[0109] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A processing device for flanged cylinders, characterized in that, Includes a spinning machine (10) and a spinning die (20); The spinning machine (10) includes a main shaft (110), a transition assembly (120) and a spinning device (130). The main shaft (110) is coaxially connected to the transition assembly (120), and the spinning device (130) is located on the side of the transition assembly (120) facing away from the main shaft (110). The spinning die (20) includes an inner support cylinder (210) and an outer support cylinder (220). The inner support cylinder (210) is coaxially located inside the outer support cylinder (220). There is a cylinder body gap (230) between the outer wall of the inner support cylinder (210) and the inner wall of the outer support cylinder (220). The inner support cylinder (210) and the outer support cylinder (220) are respectively connected to the portion of the transition component (120) facing away from the main shaft (110). There is a flange gap (240) between the outer support cylinder (220) and the transition component (120). The flange gap (240) is connected to the cylinder body gap (230).

2. The processing apparatus according to claim 1, characterized in that, The transition assembly (120) includes an adapter sleeve (121) and a transition flange (122); One end of the adapter tube (121) is coaxially connected to one side of the transition flange (122), and the other end is coaxially connected to the main shaft (110); The other side of the transition flange (122) is coaxially connected to both the inner support cylinder (210) and the outer support cylinder (220).

3. The processing apparatus according to claim 2, characterized in that, The transition flange (122) includes a ring body (1221) and a convex ring (1222); The convex ring (1222) is located on the side of the ring body (1221) away from the adapter cylinder (121), and the convex ring (1222) is coaxial with the ring body (1221); The inner support cylinder (210) is located inside the convex ring (1222), and the outer wall of the inner support cylinder (210) is in clearance fit with the inner wall of the convex ring (1222). The outer support cylinder (220) is sleeved outside the convex ring (1222), and the inner wall of the outer support cylinder (220) is in clearance fit with the outer wall of the convex ring (1222).

4. The processing apparatus according to claim 1, characterized in that, The inner support cylinder (210) has a plurality of clamping screws (211), all of which are inserted into the inner support cylinder (210), and one end of the clamping screw (211) is located in the cylinder body gap (230).

5. The processing apparatus according to claim 1, characterized in that, The outer support cylinder (220) includes a first semi-cylinder (221) and a second semi-cylinder (222); Both the first semi-cylinder (221) and the second semi-cylinder (222) are detachably coaxially connected to the transition assembly (120).

6. A method for processing a flanged cylinder, characterized in that, Based on the processing apparatus of claim 1, the processing method includes: Provide a cylindrical blank (100); The cylindrical blank (100) is clamped into the spinning die (20) such that the body of the cylindrical blank (100) is located within the gap (230) between the bodies, and the first end of the cylindrical blank (100) is located outside the spinning die (20). The first end of the cylindrical blank (100) is spun by the spinning device (130) to form a first flange (200); Adjust the clamping posture of the cylindrical blank (100) in the spinning die (20) so that the cylindrical body of the cylindrical blank (100) is located in the cylindrical body gap (230), the first flange (200) of the cylindrical blank (100) is located in the flange gap (240), and the second end of the cylindrical blank (100) is located outside the spinning die (20). The second end of the cylindrical blank (100) is spun by the spinning device (130) to form a second flange (300).

7. The processing method according to claim 6, characterized in that, The first end of the cylindrical blank (100) is spun by the spinning device (130) to form a first flange (200), including: The spinning wheel trajectory of the spinning device (130) is simulated. The spinning wheel trajectory passes through the starting point, the starting point and the ending point in sequence. The starting point is located outside the spinning die (20), the starting point is located at the axial midpoint of the outer support cylinder (220), and the ending point is located outside the spinning die (20). According to the said wheel trajectory, the first end of the cylindrical blank (100) is spun to form a first flange (200).

8. The processing method according to claim 7, characterized in that, The spindle (110) rotates at a speed of 70-90 r / min and feeds at a speed of 25-35 mm / min. The gap between the spinning wheel of the spinning device (130) and the end face of the outer support cylinder (220) away from the transition component (120) is 0.7-0.9 mm.

9. The processing method according to claim 7, characterized in that, Before simulating the trajectory of the spinning wheel of the spinning device (130), the following is also included: The spinning device (130) is subjected to radial and axial tool setting respectively. The reference for radial tool setting is the inner wall of the outer support cylinder (220), and the reference for axial tool setting is the end face of the outer support cylinder (220) away from the transition component (120).

10. The processing method according to claim 6, characterized in that, Adjusting the clamping posture of the cylindrical blank (100) within the spinning die (20) includes: Open the spinning die (20) and remove the cylindrical blank (100) from the spinning die (20); The cylindrical blank (100) is placed into the spinning die (20) again, and the spinning die (20) is closed, so that the first flange (200) is located within the flange gap (240), and the second end of the cylindrical blank (100) is located outside the spinning die (20); Check the distance between the end face of the second end of the cylindrical blank (100) and the end face of the outer support cylinder (220) away from the transition component (120). If the distance is less than the design value, adjust the cylindrical blank (100) outward along the axial direction of the outer support cylinder (220). If the distance is greater than the design value, adjust the cylindrical blank (100) inward along the axial direction of the outer support cylinder (220).

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