CN-122007803-A - Positioning and processing method for pressure-resistant cabin end socket

CN122007803ACN 122007803 ACN122007803 ACN 122007803ACN-122007803-A

Abstract

The invention discloses a process for positioning and processing a pressure-resistant cabin end enclosure, which comprises the steps of fixing a processing positioning tool on a platform, placing the ellipsoidal end enclosure on the processing positioning tool, assembling and welding, scribing a straight edge horizontal processing datum line of the ellipsoidal end enclosure, installing an internal component into the ellipsoidal end enclosure, fixing by spot welding, rechecking a horizontal datum line and a straight edge horizontal processing datum line, finally welding between the internal component and an inner cambered surface of the ellipsoidal end enclosure, clamping, aligning by the horizontal datum line, carrying out heat treatment for stress relief, aligning according to an upper datum plane of a positioning block and an outer circle of the pressure-resistant cabin end enclosure, processing a straight edge end surface and a groove of the ellipsoidal end enclosure, processing an upper datum plane of the positioning block, turning over, clamping for alignment, and processing a bottom surface of the positioning tool. The invention improves the working efficiency and the positioning accuracy of the processing of the pressure-resistant cabin head, thereby efficiently completing the strength test of the non-flange end face of the damping connecting body.

Inventors

LIU YA
XIE HAO
ZOU QUAN
WANG BEI
ZHAO YAPENG
SHI XIAOGE
WAN GUANGJIAN
YAO SHENG

Assignees

武汉重工铸锻有限责任公司

Dates

Publication Date: 20260512
Application Date: 20251225

Claims (9)

1. The pressure-resistant cabin body sealing head (1) is formed by assembling and welding an ellipsoidal sealing head (2) and an internal component (3), and is characterized in that the positioning and processing processes are as follows: 1) The processing positioning tool (4) is fixed on the platform, and the positioning blocks (14) are uniformly welded on the edge of the upper surface of the outer annular bottom plate (10) along the circumference; 2) Placing the ellipsoidal head (2) on a processing positioning tool (4), and adjusting a horizontal reference line (15) of the ellipsoidal head (2) to a horizontal position; 3) The inner member (3) is arranged in the ellipsoidal head (2), the inner member (3) and the ellipsoidal head (2) are fixed by spot welding after the assembly is completed, a horizontal reference line (15) and a straight-edge horizontal processing reference line (17) are checked, and finally the inner member (3) and the intrados of the ellipsoidal head (2) are welded; 4) Clamping, aligning by using a horizontal reference scribing line (15), and checking the distances and the sizes of all ribs, the planes of all ribs and the roughness Ra12.5 from the bottom of the ellipsoidal seal head (2) to the inner member (3); 5) Performing heat treatment to remove stress; 6) According to the alignment of the upper reference plane of the positioning block (14) and the outer circle of the pressure-resistant cabin body end socket (1), processing the straight edge end surface and the groove of the ellipsoidal end socket (2), and processing the upper reference plane of the positioning block (14); 7) Turning over, clamping and aligning, and processing the bottom surface (18) of the positioning tool (4); 8) Detecting the surface outline size of the ellipsoidal seal head (2).
2. The process for positioning and processing the pressure-resistant cabin end socket according to claim 1 is characterized in that in the step 1), the upper datum plane planes of all the positioning blocks (14) are positioned on the same plane, the error is not more than 5mm, marks, scribing lines and sample punching holes are printed on four positioning blocks (14), and the four positioning blocks (14) are uniformly distributed along the circumference.
3. The process for positioning and processing the pressure-resistant cabin end socket according to claim 1, wherein in the step 2), the straight edge allowance of the ellipsoidal end socket (2) is checked, and the straight edge processing allowance is determined.
4. The pressure-resistant cabin end socket positioning and processing process according to claim 1 is characterized in that after the inner member (3) is installed in the ellipsoidal end socket (2), the plane condition of the inner member (3) is checked by a laser level meter, the position of the inner member (3) is adjusted, the inner arc gap between the inner member (3) and the ellipsoidal end socket (2) is checked by a feeler gauge and a 5mm chock, the area with the partial clearance of a score line less than or equal to 5mm is marked, the area with the partial clearance of more than 5mm is cut and polished, the inner arc gap between the inner member (3) and the ellipsoidal end socket (2) is checked by the feeler gauge and the 5mm chock, the area with the partial clearance of the score line less than or equal to 5mm is marked until the bottom clearance is even less than or equal to 5mm, the distance between the straight edge of the ellipsoidal end socket (2) and the inner member (3) is checked, and the finished product size is ensured.
5. The process for positioning and processing the pressure-resistant cabin end socket according to claim 1, wherein in the step 7), the flatness is 0.05 μm, and the parallelism is 0.08 μm relative to the A base surface.
6. The process for positioning and processing the pressure-resistant cabin end socket according to claim 1, wherein the specific process of the step 8) is characterized in that a marking needle is used for marking datum lines of phi 1800mm and phi 2100mm on a machine tool, templates of phi 1800mm and phi 2100mm are used for detecting the outline dimension of the surface of the ellipsoidal end socket (2), if the outline dimension does not meet the requirements of 0-5 mm of tolerance, the positive difference point is marked, an ultrasonic thickness gauge is used for detecting, and after the thickness is determined, the local area is corrected under the requirement of ensuring the minimum wall thickness dimension.
7. The process for positioning and processing the pressure-resistant cabin end socket according to claim 1 is characterized in that the processing positioning tool (4) is formed by assembling and welding an outer annular bottom plate (10), an inner annular bottom plate (11), an outer annular support plate (5), an intermediate annular support plate (6), an inner annular support plate (7), a plurality of outer reinforcing plates (8) and a plurality of inner reinforcing plates (9).
8. The pressure-resistant cabin end socket positioning and processing process according to claim 7 is characterized in that the inner annular bottom plate (11) is coaxially arranged on the upper surface of the outer annular bottom plate (10), the outer annular bottom plate (5) is coaxially arranged on the upper surface of the outer annular bottom plate (10), the inner surface of the outer annular bottom plate (5) is attached to the outer surface of the inner annular bottom plate (11), the inner annular bottom plate (6) and the inner annular bottom plate (7) are coaxially arranged on the upper surface of the inner annular bottom plate (11), a plurality of outer reinforcing plates (8) are uniformly distributed on the upper surface of the outer annular bottom plate (10) along the circumference, vertical plates of the outer reinforcing plates (8) are attached to the outer surface of the outer annular bottom plate (5), all inner reinforcing plates (9) are uniformly distributed along the circumference, lower bayonets are formed in the middle of each inner reinforcing plate (9), the lower bayonets of the inner reinforcing plates (9) are clamped on the inner annular bottom plate (6), the inner ends of the inner reinforcing plates (9) are embedded into axial holes (12) of the inner annular bottom plate (7), and the inner ends of the inner annular bottom plate (5) are abutted to the outer annular bottom plate (5).
9. The process for positioning and processing the pressure-resistant cabin end enclosure according to claim 7 or 8 is characterized in that weight reducing holes (13) are formed in the inner annular bottom plate (11) and between the adjacent inner reinforcing plates (9).

Description

Positioning and processing method for pressure-resistant cabin end socket Technical Field The invention belongs to the technical field of pressure-resistant cabins, and particularly relates to a method for positioning and processing a pressure-resistant cabin end socket. Background The pressure-resistant cabin end socket is elliptical, and the pressure-resistant cabin end socket is large in diameter, so that the existing clamping method has the technical problems that the pressure-resistant cabin end socket can move and cannot be positioned in the processing process. The invention discloses a double-layer pressure-resistant cabin body of a large-depth underwater navigation body and a forming method thereof, wherein the cabin body comprises an inner shell, an outer shell, a backing plate and an insulating coating, the inner shell is formed by connecting flanges at two ends, a cylinder and an outer ring rib structure in the middle, the flanges at the two ends can be connected with other sections, the annular ribs of the inner shell are distributed at equal intervals, the wall thickness of the inner shell close to an annular welding seam is gradually increased, the integral strength and rigidity of the structure are improved, the position of the welding seam is ensured to bear smaller stress when the welding seam is subjected to external pressure, the outer shell is formed by adopting a thin-wall cylindrical shell and adopting a thin-wall plate to be welded in a rolling way, the welding seam is formed by adopting a butt-joint annular welding seam to be connected with the outer shell, and a small cavity structure at the back of the annular welding seam ensures that the butt-joint welding structure is easy to realize. But the flanges at the two ends can move and cannot be positioned in the processing process, so that the quality after processing and forming is affected. Disclosure of Invention The invention aims to overcome the problems in the background art and provides a pressure-resistant cabin head positioning and processing method which is convenient to clamp, easy to operate and reliable in performance. In order to achieve the purpose, the invention provides a process for positioning and processing a pressure-resistant cabin end socket, wherein the pressure-resistant cabin end socket is formed by welding an ellipsoidal end socket and an internal component, and the positioning and processing processes are as follows: 1) The processing positioning tool is fixed on the platform, and the positioning blocks are uniformly welded on the edge of the upper surface of the outer annular bottom plate along the circumference; 2) Placing the ellipsoidal head on a processing positioning tool, and adjusting a horizontal reference line of the ellipsoidal head to a horizontal position; 3) The internal component is arranged in the ellipsoidal head, the internal component and the ellipsoidal head are fixed by spot welding after the assembly is completed, a horizontal reference line and a straight-side horizontal processing reference line are checked, and finally the internal component and the intrados of the ellipsoidal head are welded; 4) Clamping, aligning by using a horizontal reference line, and checking the distance and the size of each rib from the bottom of the ellipsoidal seal head to the internal component, the plane of each rib and the roughness Ra12.5; 5) Performing heat treatment to remove stress; 6) According to the alignment of the upper reference plane of the positioning block and the outer circle of the pressure-resistant cabin end socket, processing the straight edge end surface and the groove of the ellipsoidal end socket, and processing the upper reference plane of the positioning block; 7) Turning over, clamping and aligning, and processing the bottom surface of the positioning tool; 8) And detecting the surface contour size of the ellipsoidal head. In step 1), the upper reference plane of all the positioning blocks are positioned on the same plane, the error is not more than 5mm, marks, lines and proofing punching holes are printed on four of the positioning blocks, and the four positioning blocks are uniformly distributed along the circumference. Further, in the step 2), the straight edge allowance of the ellipsoidal head is checked, and the straight edge machining allowance is determined. Further, in the step 3), after the inner member is installed in the ellipsoidal head, the plane condition of the inner member is checked by a laser level meter, the position of the inner member is adjusted, the inner arc gap between the inner member and the ellipsoidal head is checked by a feeler gauge and a 5mm feeler block, the area with the partial clearance of a score line less than or equal to 5mm is marked, the area with the partial clearance greater than 5mm is cut and polished, the inner arc gap between the inner member and the ellipsoidal head is checked by the feeler gauge and the 5mm feeler block, the area w