Positioning tooling and positioning processing method

Abstract

The embodiment of the present application discloses a positioning tool and a positioning processing method. The positioning tool is provided with a template, and a positioning groove is opened on the outer peripheral wall of the template. The template can be stacked with the mounting part of the workpiece, and the positioning groove and the groove to be processed on the mounting part are connected to each other. The bottom plate is embedded in the connected positioning groove and the groove to be processed. The two first pressure plates are respectively abutted against the two inner side walls of the positioning groove, and the two second pressure plates are respectively abutted against the two inner side walls of the groove to be processed. The template and the mounting part are prevented from moving relative to each other in the axial direction by clamping the two clamping plates. When the groove to be processed is to be processed, the positioning components located in a group of connected positioning grooves and the groove to be processed can be removed, and the positioning components installed in other connected positioning grooves and the groove to be processed can be retained. The groove to be processed is processed to form a mounting groove that matches the size of the positioning groove. During the processing, relative displacement between the template and the mounting part can be effectively avoided, thereby ensuring the processing accuracy and processing stability of the mounting groove.

Description

Technical Field

[0001] The present application relates to the technical field of workpiece processing, and in particular to a positioning tool and a positioning processing method. Background Art

[0002] When a workpiece with a mounting portion needs to be installed inside a container, it is usually necessary to open a mounting groove on the outer peripheral wall of the mounting portion. The mounting portion is usually a circular component (such as a disc) or an annular component (such as a flange), and the container is usually a cylinder or a tube. The workpiece is assembled with the mounting groove opened on the outer peripheral wall of the mounting portion and the protrusion provided on the inner wall of the container. In order to improve the convenience of assembly, it is usually necessary to open the mounting groove on the outer peripheral wall of the mounting portion in advance and then install it inside the container. However, the existing grooving method cannot guarantee the assembly accuracy of the formed mounting groove and the protrusion on the inner wall of the container, which affects the assembly stability between the workpiece and the container and affects the service life. Summary of the Invention

[0003] The embodiments of the present application provide a positioning tool and a positioning processing method, which can solve the problem of poor assembly accuracy between the mounting groove on the existing workpiece and the protrusion on the inner wall of the container.

[0004] The embodiment of the present application provides a positioning tool for clamping and fixing the mounting portion of at least one workpiece, wherein at least two grooves to be processed are spaced apart on the outer peripheral wall of the mounting portion, and the positioning tool comprises a template and at least two positioning components; at least two positioning grooves are provided on the outer peripheral wall of the template, and the template is configured to be stacked with the mounting portion along its axial direction, and the positioning groove and the groove to be processed are connected to each other in the axial direction; the positioning component comprises: a base plate, which is configured to be embedded in the connected positioning groove and the groove to be processed along the axial direction; a first pressure plate group, comprising two first pressure plates, the two first pressure plates are spaced apart in the positioning groove along the width direction of the base plate, and the two first pressure plates are spaced apart in the width direction of the base plate The ends adjacent to each other in the direction are respectively connected to the base plate, and the ends of the two first pressure plates away from each other in the width direction are respectively abutted against the inner side walls of the positioning groove, and the width direction is perpendicular to the axial direction; at least one group of second pressure plate groups, including two second pressure plates, the two second pressure plates are spaced apart in the groove to be processed along the width direction, and the ends adjacent to each other in the width direction of the two second pressure plates are respectively connected to the base plate, and the ends of the two first pressure plates away from each other in the width direction are respectively abutted against the inner side walls of the groove to be processed; two clamping plates, one clamping plate is connected to each end of the base plate in the axial direction, and the two clamping plates form a clamping of the template and the mounting portion in the axial direction.

[0005] Optionally, the number of the workpieces is at least two, the template and at least two mounting portions are stacked along the axial direction, and a group of the second pressure plate groups is provided in the groove to be processed of each mounting portion.

[0006] Optionally, the ends of the two first pressure plates adjacent to each other in the width direction are respectively slidably connected to the bottom plate, so that the two first pressure plates approach or move away from each other along the width direction; the ends of the two second pressure plates adjacent to each other in the width direction are respectively slidably connected to the bottom plate, so that the two second pressure plates approach or move away from each other along the width direction.

[0007] Optionally, the bottom plate has two side walls arranged opposite to each other along the width direction, and the side walls are inclined surfaces; the first pressure plate has two first walls arranged opposite to each other along the width direction, one of the first walls is an inclined surface fitted with the adjacent side wall, and the other first wall is a vertical surface fitted with the inner side wall of the positioning groove; the second pressure plate has two second walls arranged opposite to each other along the width direction, one of the second wall is an inclined surface fitted with the adjacent side wall, and the other second wall is a vertical surface fitted with the inner side wall of the groove to be processed.

[0008] Optionally, at least two of the workpieces include a first workpiece and a second workpiece; the first workpiece includes a first cylinder, the first cylinder having a first open end and a first end plate opposite to each other in an axial direction, a support plate is connected to the first cylinder, a first mounting portion on the first workpiece surrounds the first open end along the circumference of the first cylinder, a first positioning hole is provided on the support plate along the axial direction, and a second positioning hole coaxial with the first positioning hole is provided on the first end plate; the second workpiece includes a second cylinder, the second cylinder having a second open end and a second end plate opposite to each other in an axial direction; the second mounting portion on the second workpiece surrounds the second open end along the circumference of the second cylinder, and a third positioning hole coaxial with the first positioning hole is provided on the second end plate; a positioning through hole coaxial with the first positioning hole is provided on the template.

[0009] At the same time, the embodiment of the present application also provides a positioning processing method using the positioning tool as described above, comprising the following steps:

[0010] S1. Assemble template and workpiece:

[0011] The template and the mounting portion of the workpiece are stacked in the axial direction, and at least two positioning grooves on the template are aligned one-to-one with at least two grooves to be processed on the mounting portion in the axial direction and are connected to each other to form at least two groups of connected positioning grooves and grooves to be processed;

[0012] S2. Install the positioning components:

[0013] Install the bottom plate in the connected positioning groove and the groove to be processed;

[0014] Connecting the two clamping plates to both ends of the base plate in the axial direction respectively to clamp the template and the mounting portion in the axial direction;

[0015] The two first pressing plates are respectively brought into contact with the inner side walls of the positioning groove;

[0016] The two second pressing plates are respectively brought into contact with the inner side walls of the groove to be processed;

[0017] S3. Processing to form the installation groove:

[0018] S31, in at least two groups of connected positioning grooves and grooves to be processed, remove the positioning components installed in one group of connected positioning grooves and grooves to be processed, retain the positioning components installed in the other group of connected positioning grooves and grooves to be processed, and process the grooves to be processed into installation grooves;

[0019] S32, after forming the installation groove, installing the positioning assembly in the connected positioning groove and the installation groove, and the two second pressing plates respectively abut against the inner side walls of the installation groove;

[0020] S33, removing the positioning components installed in another set of connected positioning grooves and the grooves to be processed, and processing the grooves to be processed into installation grooves.

[0021] Optionally, in step S1, the number of the positioning grooves is at least four, which are arranged at intervals along the circumference of the template to form at least four groups of connected positioning grooves and grooves to be processed; in step S31, the positioning components installed in one group of connected positioning grooves and grooves to be processed are removed, and the positioning components installed in the other three groups of connected positioning grooves and grooves to be processed are retained.

[0022] Optionally, in step S1, the number of workpieces is at least two, the template and the mounting portions of at least two of the workpieces are stacked in the axial direction, and the positioning groove and the two grooves to be processed are connected in sequence along the axial direction; in step S3, the two connected grooves to be processed are synchronously processed to form a mounting groove.

[0023] Optionally, the distance between the two inner side walls of the installation groove is consistent with the distance between the two inner side walls of the positioning groove.

[0024] Optionally, step S1 also includes: inserting the first cylinder into the second cylinder, overlapping the first mounting portion and the second mounting portion in the axial direction, taking the line connecting the central axes of the first positioning hole and the second positioning hole as the reference line, measuring the deviation value between the central axis of the third positioning hole and the reference line, and adjusting the relative position of the first cylinder and the second cylinder according to the deviation value so that the central axis of the third positioning hole coincides with the reference line; overlapping the template on the first mounting portion in the axial direction, measuring the deviation value between the central axis of the positioning through hole and the reference line, and adjusting the position of the template according to the deviation value so that the central axis of the positioning through hole coincides with the reference line.

[0025] The beneficial effect of the present application is to provide a positioning tool and a positioning processing method using the positioning tool, wherein the positioning tool is provided with a template, and a positioning groove is opened on the outer peripheral wall of the template to match the protrusion on the inner wall of the container to be assembled. The template is configured to be stacked with the mounting portion of the workpiece along the axial direction of the template, and the positioning groove and the groove to be processed on the outer peripheral wall of the mounting portion are connected to each other in the axial direction, and a positioning component is provided, and the bottom plate in the positioning component is embedded in the connected positioning groove and the groove to be processed along the axial direction of the template, and a first pressure plate group is installed on the bottom plate located in the positioning groove, and the two first pressure plates in the first pressure plate group are respectively abutted against the two inner side walls of the positioning groove, and a second pressure plate group is installed on the bottom plate located in the groove to be processed, and the two second pressure plates in the second pressure plate group are respectively abutted against the groove to be processed. The two inner walls are in contact with each other, and the stacked template and the mounting portion are clamped in the axial direction by two clamping plates to avoid relative movement between the template and the mounting portion in the axial direction. When the groove to be processed is to be processed, the positioning components located in a group of connected positioning grooves and the groove to be processed can be removed, and the positioning components installed in other connected positioning grooves and the groove to be processed can be retained. The groove to be processed with the positioning components removed is further processed to form a mounting groove that matches the size of the positioning groove according to the positioning groove connected to it. In the processing process, due to the presence of the positioning components in other connected positioning grooves and the groove to be processed, relative displacement between the template and the mounting portion during the processing of the mounting groove can be effectively avoided, thereby ensuring the processing accuracy and processing stability of the mounting groove, and further ensuring the assembly accuracy and assembly stability of the workpiece and the container. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the first structure of the positioning component in the positioning tool provided in the embodiment of the present application;

[0028] Figure 2 yes Figure 1 Bottom view of

[0029] Figure 3 This is a schematic diagram of the second structure of the positioning component in the positioning tool provided in an embodiment of the present application;

[0030] Figure 4 This is a structural diagram of the bottom plate of the positioning tool provided in an embodiment of the present application;

[0031] Figure 5 yes Figure 4 Bottom view of

[0032] Figure 6 This is a schematic structural diagram of the first pressing plate in the positioning tool provided in an embodiment of the present application;

[0033] Figure 7 yes Figure 6 A top view of

[0034] Figure 8 This is a schematic structural diagram of the second pressing plate in the positioning tool provided in an embodiment of the present application;

[0035] Figure 9 This is a schematic diagram of the combined structure of a positioning tool and a mounting portion provided in an embodiment of the present application;

[0036] Figure 10 This is a schematic diagram of the combined structure of the positioning tool and two mounting parts provided in an embodiment of the present application;

[0037] Figure 11 is a schematic structural diagram of the first workpiece;

[0038] Figure 12 yes Figure 11 AA section view;

[0039] Figure 13 yes Figure 11 A top view of

[0040] Figure 14 is a schematic structural diagram of the second workpiece;

[0041] Figure 15 yes Figure 14 BB cross-sectional view;

[0042] Figure 16 yes Figure 14 A top view of

[0043] Figure 17 This is a schematic diagram of the assembly structure of the positioning tool, the first workpiece, and the second workpiece provided in an embodiment of the present application.

[0044] Description of reference numerals:

[0045] 100, workpiece, 100a, first workpiece, 100b, second workpiece, 110, mounting portion, 110a, first mounting portion, 110b, second mounting portion, 111, mounting groove, 120a, first cylinder, 121a, first opening end, 122a, first end plate, 1221a, second positioning hole, 120b, second cylinder, 121b, second opening end, 122b, second end plate, 1221b, third positioning hole, 130a, support plate, 131a, first positioning hole;

[0046] 200, positioning tool, 210, template, 211, positioning groove, 212, positioning through hole, 220, bottom plate, 221, side wall, 222, mounting hole, 223, assembly hole, 230, first pressing plate group, 231, first pressing plate, 2311, first main body, 2312, first connecting portion, 2313, first waist hole, 240, second pressing plate group, 241, second pressing plate, 2411, second main body, 2412, second connecting portion, 2413, second waist hole, 250, splint;

[0047] X, axial direction, Y, width direction. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0049] The embodiment of the present application provides a positioning tool and a positioning processing method using the positioning tool, wherein the positioning tool is provided with a template, and a positioning groove is opened on the outer peripheral wall of the template to match the protrusion on the inner wall of the container to be assembled. The template is configured to be stacked with the mounting portion of the workpiece along the axial direction of the template, and the positioning groove and the groove to be processed on the outer peripheral wall of the mounting portion are connected to each other in the axial direction, and a positioning component is provided. The bottom plate in the positioning component is embedded in the connected positioning groove and the groove to be processed along the axial direction of the template, and a first pressure plate group is installed on the bottom plate located in the positioning groove, and the two first pressure plates in the first pressure plate group are respectively in contact with the two inner side walls of the positioning groove, and a second pressure plate group is installed on the bottom plate located in the groove to be processed, and the two second pressure plates in the second pressure plate group are respectively in contact with the two inner side walls of the groove to be processed. The inner side walls are in contact with each other, and the stacked template and the mounting portion are clamped in the axial direction by two clamping plates to prevent the template and the mounting portion from moving relative to each other in the axial direction. When processing the groove to be processed, the positioning components located in a group of interconnected positioning grooves and the groove to be processed can be removed, and the positioning components installed in other interconnected positioning grooves and the groove to be processed can be retained. The groove to be processed with the positioning components removed is further processed to form a mounting groove that matches the size of the positioning groove according to the positioning groove connected to it. In the processing process, due to the presence of the positioning components in other interconnected positioning grooves and the groove to be processed, relative displacement between the template and the mounting portion during the processing of the mounting groove can be effectively avoided, thereby ensuring the processing accuracy and processing stability of the mounting groove, and further ensuring the assembly accuracy and assembly stability of the workpiece and the container. As a typical application, the positioning tool can be used for the centering, positioning, and grooving processing of the clamping assembly and the hanging basket assembly in the nuclear reactor pressure vessel.

[0050] In the embodiment of the present application, a positioning tool 200 is provided, referring to Figures 1 to 17 The positioning tool 200 includes: a template 210 and a positioning component, referring to Figures 1 to 10 The positioning assembly includes: a base plate 220, a first pressing plate group 230, a second pressing plate group 240 and a clamping plate 250.

[0051] In some embodiments of the present application, reference Figure 9 and Figure 17 The template 210 is in the shape of a disc, and at least two positioning grooves 211 are provided on the outer peripheral wall of the template 210. The positioning grooves 211 extend along the radial direction of the template 210. In this embodiment, there are two positioning grooves 211, which are arranged at equal intervals along the circumference of the template 210, that is, the angle between two adjacent positioning grooves 211 in the circumferential direction of the template 210 is 90°.

[0052] Reference Figure 1 、 Figure 2 as well as Figure 4 、 Figure 5The bottom plate 220 is in the shape of a plate body. The bottom plate 220 has a length direction and a width direction Y. The bottom plate 220 extends along the axial direction X of the template 210, that is, the length direction of the bottom plate 220 is arranged along the axial direction X of the template 210. The bottom plate 220 has two side walls 221 arranged opposite to each other in the width direction Y. A mounting hole 222 is opened on the surface of the bottom plate 220, and assembly holes 223 are respectively opened on the end faces of both ends in the length direction. The mounting hole 222 can be a through hole penetrating the bottom plate 220 or a blind hole. The assembly hole 223 is a blind hole and extends along the length direction of the bottom plate 220.

[0053] Reference Figure 1 、 Figure 2 as well as Figure 6 、 Figure 7 The first pressure plate group 230 includes two first pressure plates 231, and the two first pressure plates 231 are spaced apart along the width direction Y of the base plate 220. The two first pressure plates 231 are adjacent to each other at one end in the width direction Y and are respectively connected to the base plate 220. Specifically, the first pressure plates 231 are connected to the mounting holes 222 on the base plate 220 by bolts. Each first pressure plate 231 corresponds to at least one mounting hole 222. In this embodiment, each first pressure plate 231 corresponds to two mounting holes 222 to ensure the stability of the connection between the first pressure plate 231 and the base plate 220.

[0054] Reference Figure 1 、 Figure 2 as well as Figure 8 The second pressure plate group 240 includes two second pressure plates 241. In this embodiment, the number of the second pressure plate group 240 is one. The two second pressure plates 241 are spaced apart along the width direction Y of the base plate 220. The two second pressure plates 241 are adjacent to each other at one end in the width direction Y and are respectively connected to the base plate 220. Specifically, the second pressure plates 241 are connected to the mounting holes 222 on the base plate 220 by bolts. Each second pressure plate 241 corresponds to at least one mounting hole 222. In this embodiment, each second pressure plate 241 corresponds to two mounting holes 222 to ensure the stability of the connection between the second pressure plate 241 and the base plate 220.

[0055] Reference Figure 1 and Figure 2 There are two splints 250, which are respectively arranged at both ends of the base plate 220 in the axial direction X (ie, the length direction of the base plate 220), and the splints 250 are connected to the assembly holes 223 on the base plate 220 by screws.

[0056] The method of using the positioning tool 200 provided in this embodiment is as follows: Figure 9The template 210 and the mounting portion 110 of the workpiece 100 are stacked along the axial direction X of the template 210. In this embodiment, the mounting portion 110 is annular in shape, and the diameter of the template 210 is consistent with the outer diameter of the mounting portion 110. The mounting portion 110 is provided with a groove to be machined (not shown in the figure). The groove to be machined corresponds to the positioning groove 211 in number and is interconnected. In this embodiment, there are four positioning grooves 211, so there are four groups of interconnected grooves to be machined and positioning grooves 211. Each group of grooves to be machined and positioning grooves 211 is embedded with a base plate 220. The ends of the two first pressing plates 231, which are separated from each other in the width direction Y, respectively abut against the two inner side walls of the positioning groove 211 that are arranged opposite to each other in the width direction Y, so as to fill the gap between the side wall 221 of the base plate 220 and the inner side wall of the adjacent positioning groove 211. The ends of the two second pressing plates 241, which are spaced apart from each other in the width direction Y, respectively abut against two inner sidewalls of the groove to be processed, which are located opposite each other in the width direction Y, thereby filling the gap between the sidewall 221 of the base plate 220 and the inner sidewall of the adjacent groove to be processed. The first pressing plate 231 and the second pressing plate 241 fill the gap to secure the mounting portion 110 to the template 210, ensuring that the positioning groove 211 is aligned with the groove to be processed in the axial direction X. The two clamps 250 are respectively connected to the two ends of the base plate 220 in the axial direction X, one of the clamps 250 is in contact with the side of the template 210 facing away from the mounting part 110 in the axial direction X, and the other clamp 250 is in contact with the side of the mounting part 110 facing away from the template 210 in the axial direction X. The two clamps 250 cooperate to form a clamp for the stacked templates 210 and the mounting part 110 in the axial direction X, thereby avoiding relative movement of the template 210 and the mounting part 110 in the axial direction X and ensuring the firmness of the clamping.

[0057] Among them, the groove to be processed is a groove body formed by rough processing of the outer peripheral wall of the mounting part 110 by a tool, and the spacing between the two inner side walls of the groove to be processed that are relatively arranged in the width direction Y is smaller than the spacing between the two inner side walls of the positioning groove 211 that are relatively arranged in the width direction Y. For example, the spacing between the two inner side walls of the positioning groove 211 is 100 mm, and the spacing between the two inner side walls of the groove to be processed is less than 100 mm, for example, 90 mm. The groove to be processed is further processed (i.e., fine processing) by a tool to form a mounting groove 111 on the outer peripheral wall of the mounting part 110. The spacing between the two inner side walls of the mounting groove 111 is consistent with the spacing between the two inner side walls of the positioning groove 211, for example, both are 100 mm. The workpiece 100 cooperates with the protrusion on the inner wall of the container (not shown in the figure) through the mounting groove 111 formed on the mounting part 110 to realize the assembly of the workpiece 100 and the container.

[0058] In some embodiments of the present application, reference Figure 3The number of the second pressing plate groups 240 is two, and the two second pressing plate groups 240 are spaced apart along the axial direction X. Each second pressing plate group 240 includes two second pressing plates 241. Figure 10 , there are two workpieces 100, that is, there are two mounting parts 110, the template 210 and the two mounting parts 110 are stacked along the axial direction X, and a second pressure plate group 240 is set in the groove to be processed of each mounting part 110, and the two second pressure plates 241 in each second pressure plate group 240 are respectively abutted against the opposite inner side walls of the groove to be processed at one end away from each other in the width direction Y, so as to realize the fixation of the two mounting parts 110 and the template 210, and ensure that the positioning groove 211 and the two grooves to be processed are aligned in the axial direction X, so that when the groove to be processed is subsequently fine-machined, the two grooves to be processed are synchronously machined by the tool, so that the mounting grooves 111 formed by the two grooves to be processed are aligned in the axial direction X, ensuring the consistency of the groove positions and groove sizes of the two mounting grooves 111, thereby ensuring the accuracy and stability of the installation of the two workpieces 100 in the same container.

[0059] In some embodiments of the present application, reference Figures 1 to 3 as well as Figures 6 to 10 The two first pressing plates 231 in the first pressing plate group 230 are slidably connected to the bottom plate 220 at adjacent ends in the width direction Y, so that the two first pressing plates 231 move closer to or farther away from each other along the width direction Y. The two second pressing plates 241 in each second pressing plate group 240 are slidably connected to the bottom plate 220 at adjacent ends in the width direction Y, so that the two second pressing plates 241 move closer to or farther away from each other along the width direction Y.

[0060] Specifically, refer to Figures 1 to 5 The two side walls 221 of the bottom plate 220 are oppositely arranged in the width direction Y, respectively, and are inclined surfaces, so that the cross-section of the bottom plate 220 is an isosceles trapezoid. The first pressing plate 231 has two first walls oppositely arranged along the width direction Y, one first wall is an inclined surface that fits with the adjacent side wall 221, and the other first wall is a vertical surface that fits with the inner wall of the positioning groove 211. The second pressing plate 241 has two second walls oppositely arranged along the width direction Y, one second wall is an inclined surface that fits with the adjacent side wall 221, and the other second wall is a vertical surface that fits with the inner wall of the groove to be processed (or the installation groove 111).

[0061] Specifically, refer to Figures 5 to 7The first pressing plate 231 includes a first main body 2311 and a first connecting portion 2312 connected in sequence along the width direction Y. The two side surfaces of the first main body 2311 opposite to each other in the width direction Y constitute two first wall surfaces. The first connecting portion 2312 is provided with a first waist hole 2313, which extends along the width direction Y. The bolt passes through the first waist hole 2313 and the mounting hole 222, so that the first pressing plate 231 is slidably connected to the bottom plate 220 through the first connecting portion 2312. The first main body 2311 is provided with a first waist hole 2313. The first waist hole 2313 extends along the width direction Y. The bolt passes through the first waist hole 2313 and the mounting hole 222, so that the first pressing plate 231 is slidably connected to the bottom plate 220 through the first connecting portion 2312. The first wall surface set as an inclined surface is fitted with the side wall 221 of the bottom plate 220, so that the first pressure plate 231 slides on the side wall 221 through the first main body 2311. Combined with the design of the first waist hole 2313, the first wall surface set as a vertical surface in the first main body 2311 is fitted with the inner wall of the positioning groove 211, thereby realizing the expandable structure design of the two first pressure plates 231 in the first pressure plate group 230, so that the two first pressure plates 231 in the first pressure plate group 230 can adapt to the positioning grooves 211 with different slot sizes.

[0062] Reference Figure 8 The second pressing plate 241 includes a second main body 2411 and a second connecting portion 2412 connected in sequence along the width direction Y. The two side surfaces of the second main body 2411 opposite to each other in the width direction Y constitute two second wall surfaces. A second waist hole 2413 is opened on the second connecting portion 2412. The second waist hole 2413 extends along the width direction Y. The bolt passes through the second waist hole 2413 and the mounting hole 222, so that the second pressing plate 241 is slidably connected to the bottom plate 220 through the second connecting portion 2412. The second main body 2411 is connected to the bottom plate 220 through the second wall surface set as an inclined surface. The surface fits with the side wall 221 of the bottom plate 220, so that the second pressure plate 241 slides on the side wall 221 through the second main body 2411. Combined with the design of the second waist hole 2413, the second wall surface set as a vertical surface in the second main body 2411 fits with the inner wall of the groove to be processed (or the installation groove 111), thereby realizing the expandable structure design of the two second pressure plates 241 in the second pressure plate group 240, so that the two second pressure plates 241 in the second pressure plate group 240 can adapt to the grooves to be processed (or the installation grooves 111) with different slot sizes.

[0063] In some embodiments of the present application, reference Figures 10 to 17The workpiece 100 includes a first workpiece 100a and a second workpiece 100b. Correspondingly, the mounting portion on the first workpiece 100a is a first mounting portion 110a, and the mounting portion on the second workpiece 100b is a second mounting portion 110b. Specifically, taking the in-core components in the pressure vessel of a nuclear reactor as an example, the in-core components include a clamping assembly and a hanging basket assembly. The clamping assembly is the first workpiece 100a, and the first mounting portion 110a is a flange. Four grooves to be processed are provided on the outer peripheral wall of the first mounting portion 110a. The hanging basket assembly is the second workpiece 100b, and the second mounting portion 110b is a flange. Four grooves to be processed are provided on the outer peripheral wall of the second mounting portion 110b.

[0064] Reference Figures 11 to 13 The first workpiece 100a includes a first cylinder 120a, the first cylinder 120a has a first open end 121a and a first end plate 122a which are arranged opposite to each other in the axial direction, the first end plate 122a is the upper plate of the core in the clamping assembly, the first mounting portion 110a surrounds the first open end 121a along the circumference of the first cylinder 120a, the first cylinder 120a is connected with a support plate 130a, the support plate 130a is provided with a first positioning hole 131a, the first end plate 122a is provided with a second positioning hole 1221a, the second positioning hole 1221a is coaxial with the first positioning hole 131a in the axial direction X.

[0065] Reference Figures 14 to 16 The second workpiece 100b includes a second cylinder 120b, the second cylinder 120b has a second open end 121b and a second end plate 122b arranged opposite to each other in the axial direction, the second end plate 122b is the lower core plate in the hanging basket assembly, the second mounting portion 110b surrounds the second open end 121b along the circumference of the second cylinder 120b, and the second end plate 122b is provided with a third positioning hole 1221b coaxial with the first positioning hole 131a.

[0066] Reference Figure 17 The template 210 is provided with a positioning through hole 212 coaxial with the first positioning hole 131 a.

[0067] In some embodiments of the present application, reference Figure 10 、 Figure 13 、 Figure 16 and Figure 17 The number of the first positioning hole 131a, the second positioning hole 1221a, the third positioning hole 1221b and the positioning through hole 212 is the same, which are five and are coaxially arranged. Taking the positioning through hole 212 as an example, refer to Figure 17The central axis of one positioning through-hole 212 coincides with the central axis of template 210. The other four positioning through-holes 212 are equidistantly spaced along the circumference of template 210. The four positioning through-holes 212 located outside the central axis of template 210 each correspond to a positioning groove 211 in the radial direction of template 210. The provision of five positioning holes and five positioning through-holes 212 ensures that the positioning groove 211 of template 210, the groove to be machined of the first mounting portion 110a, and the groove to be machined of the second mounting portion 110b are aligned in the axial direction X and are in communication with each other.

[0068] At the same time, in some embodiments of the present application, a positioning processing method using the positioning tool 200 as described above is also provided. Specifically, the positioning processing method is explained by taking the first workpiece 100a as the clamping component and the second workpiece 100b as the hanging basket component as an example.

[0069] The hold-down assembly and the basket assembly together constitute the reactor internals. In a nuclear power plant reactor, the primary circuit main equipment includes the pressure vessel, reactor internals, control rod drive mechanism, evaporator, main pump, and pressurizer. The reactor internals are primarily used to support and position the core components. Together with the pressure vessel, they form the coolant flow path within the reactor, separating the hot and cold fluids within the reactor. They are one of the key components guiding the coolant's circulation within the reactor.

[0070] The in-pile components composed of a clamping assembly and a hanging basket assembly need to be installed in a pressure vessel. Specifically, by respectively opening mounting grooves on the flange end of the clamping assembly and the flange end of the hanging basket assembly, when in use, the cylinder of the clamping assembly is inserted into the cylinder of the hanging basket assembly, the flange end of the clamping assembly and the flange end of the hanging basket assembly are stacked, the mounting groove on the flange end of the clamping assembly is connected to the mounting groove on the flange end of the hanging basket assembly, and the in-pile components and the pressure vessel are assembled by assembling the connected mounting grooves with the protrusions on the inner wall of the pressure vessel. However, since the mounting grooves on the flange end of the clamping assembly and the mounting grooves on the flange end of the hanging basket assembly are processed separately, there is an error in the consistency of the slot positions and sizes of the mounting grooves on the two components, which can lead to poor assembly stability of the in-pile components and the pressure vessel, or even the possibility of them falling off.

[0071] By using the positioning tool provided in the embodiment of the present application to simultaneously open installation grooves on the flange end of the clamping assembly and the flange end of the hanging basket assembly, the groove sizes and groove positions of the installation grooves on the flange end of the clamping assembly and the installation grooves on the flange end of the hanging basket assembly can be made consistent, thereby ensuring the assembly stability and firmness of the in-pile components and the pressure vessel.

[0072] Specifically, the positioning processing method performed using the positioning tool 200 provided in the embodiment of the present application includes the following steps:

[0073] S1, assembling the template 210, the first workpiece 100a and the second workpiece 100b:

[0074] S11, reference Figure 17 The first cylinder 120a of the first workpiece 100a (i.e., the clamping assembly) is inserted into the second cylinder 120b of the second workpiece 100b (i.e., the basket assembly) along the axial direction X. The first end plate 122a (i.e., the upper plate of the core) and the second end plate 122b (i.e., the lower plate of the core) are spaced apart in the axial direction X to define an accommodating cavity in the second cylinder 120b, which serves as an in-core component and can be used to stack core rods. The first mounting portion 110a (i.e., the flange end of the clamping assembly) and the second mounting portion 110b (i.e., the flange end of the hanging basket assembly) are stacked in the axial direction X. The line connecting the central axis of the first positioning hole 131a on the support plate 130a and the second positioning hole 1221a on the first end plate 122a is used as a reference line. The deviation between the central axis of the third positioning hole 1221b coaxially arranged with the first positioning hole 131a and the reference line is measured, and the relative position between the first cylinder 120a and the second cylinder 120b is adjusted according to the deviation value so that the central axis of the third positioning hole 1221b coincides with the reference line, thereby completing the alignment of the first mounting portion 110a and the second mounting portion 110b. The groove to be processed on the first mounting portion 110a corresponds to the groove to be processed on the second mounting portion 110b one-to-one and is connected to each other in the axial direction X.

[0075] S12. Superimpose the template 210 on the first mounting portion 110a along the axial direction X, measure the deviation value between the central axis of the positioning through hole 212 and the reference line, and adjust the relative position of the template 210 and the first mounting portion 110a according to the deviation value, so that the central axis of the positioning through hole 212 coincides with the reference line, and complete the installation of the template 210 on the first mounting portion 110a. The positioning groove 211, the groove to be processed on the first mounting portion 110a, and the groove to be processed on the second mounting portion 110b correspond one to one and are connected to each other in the axial direction X, forming four groups of connected groove bodies, each group including a positioning groove 211, a groove to be processed on the first mounting portion 110a, and a groove to be processed on the second mounting portion 110b.

[0076] S2. Install the positioning components:

[0077] S21, installing the bottom plate 220 in the connected positioning groove 211 and the two grooves to be processed;

[0078] S22, respectively installing the two clamping plates 250 at both ends of the base plate 220 in the axial direction X, so that the two clamping plates 250 clamp and fix the stacked templates 210, the first mounting portion 110a, and the second mounting portion 110b in the axial direction X;

[0079] S23, installing the two first pressing plates 231 of the first pressing plate group 230 on the bottom plate 220, with the ends of the two first pressing plates 231 that are away from each other in the width direction Y respectively abutting against the inner sidewalls of the positioning groove 211;

[0080] S24, installing two second pressing plates 241 of a second pressing plate group 240 on the bottom plate 220, with ends of the two second pressing plates 241 that are away from each other in the width direction Y respectively abutting against inner side walls of the groove to be processed of the first mounting portion 110a;

[0081] S25. Install two second pressing plates 241 in another second pressing plate group 240 on the bottom plate 220, with ends of the two second pressing plates 241 away from each other in the width direction Y respectively abutting against the inner side walls of the groove to be processed of the second mounting portion 110b.

[0082] Thus, a positioning assembly is installed in each of the four groups of connected troughs.

[0083] S3. Processing to form the installation groove:

[0084] S31. Among the four connected trough bodies, remove the positioning assembly installed in one of the connected trough bodies, retain the positioning assemblies in the other three connected trough bodies, and use a tool to simultaneously machine two connected grooves to be machined in the trough body from which the positioning assembly has been removed to form installation grooves 111, thereby obtaining two installation grooves 111 having the same groove size and groove position.

[0085] Among them, since the positioning components in the other three groups of connected grooves are retained, the clamping plate 250 can prevent the template 210, the first mounting part 110a and the second mounting part 110b from moving relative to each other in the axial direction X, and the expansion effect of the first pressure plate 231 and the second pressure plate 241 can prevent the template 210, the first mounting part 110a and the second mounting part 110b from moving relative to each other in the width direction Y, thereby ensuring the synchronous processing of the two grooves to be processed by the tool and the consistency of the groove size and groove position of the two mounting grooves 111 formed by the processing.

[0086] S32: After the two mounting grooves 111 are formed, the positioning assembly is reinstalled in the interconnected positioning groove 211 and the two mounting grooves 111, so that the two second pressing plates 241 in each second pressing plate group 240, at ends away from each other in the width direction Y, respectively abut against the inner sidewall of the mounting groove 111.

[0087] S33, removing the positioning assembly from one of the other three groups of connected trough bodies, and referring to step S31, simultaneously processing the two to-be-processed troughs in the group of trough bodies from which the positioning assembly is removed to form the installation groove 111;

[0088] S34 , repeating steps S31 to S33 until the two grooves to be processed in each group of connected groove bodies are processed to form the installation grooves 111 .

[0089] The above is a detailed introduction to a positioning tool and positioning processing method provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A positioning tool for clamping and fixing a mounting portion (110) of at least one workpiece (100), wherein at least two grooves to be processed are spaced apart on the outer peripheral wall of the mounting portion (110), characterized in that: The positioning tool comprises a template (210) and at least two positioning components; At least two positioning grooves (211) are provided on the outer peripheral wall of the template (210), the template (210) is configured to be stacked with the mounting portion (110) along its axial direction (X), and the positioning grooves (211) and the groove to be processed are communicated with each other in the axial direction (X); The positioning component includes: A bottom plate (220) is configured to be embedded in the connected positioning groove (211) and the groove to be processed along the axial direction (X); A first pressing plate group (230) comprises two first pressing plates (231), the two first pressing plates (231) being arranged in the positioning groove (211) at intervals along the width direction (Y) of the base plate (220), the two first pressing plates (231) being adjacent to each other at one end in the width direction (Y) being connected to the base plate (220), and the two first pressing plates (231) being away from each other at one end in the width direction (Y) being in contact with the inner side wall of the positioning groove (211), and the width direction (Y) being perpendicular to the axial direction (X); At least one second pressing plate group (240), comprising two second pressing plates (241), the two second pressing plates (241) being arranged in the groove to be processed at intervals along the width direction (Y), the two second pressing plates (241) having adjacent ends in the width direction (Y) being connected to the bottom plate (220), and the two first pressing plates (231) having distant ends in the width direction (Y) being in contact with the inner sidewall of the groove to be processed; Two clamping plates (250), one clamping plate (250) is connected to each of the two ends of the bottom plate (220) in the axial direction (X), and the two clamping plates (250) form a clamp for the template (210) and the mounting portion (110) in the axial direction (X); The number of the workpieces (100) is at least two, the template (210) and at least two mounting portions (110) are stacked along the axial direction (X), and a group of the second pressing plate groups (240) is provided in the groove to be processed of each mounting portion (110); One end of the two first pressing plates (231) adjacent to each other in the width direction (Y) is slidably connected to the bottom plate (220) so that the two first pressing plates (231) move closer to or farther away from each other along the width direction (Y); One end of the two second pressing plates (241) adjacent to each other in the width direction (Y) is respectively slidably connected to the bottom plate (220), so that the two second pressing plates (241) are moved closer to or farther away from each other along the width direction (Y).

2. The positioning tool according to claim 1, characterized in that: The bottom plate (220) has two side walls (221) arranged opposite to each other along the width direction (Y), and the side walls (221) are respectively inclined surfaces; The first pressing plate (231) has two first wall surfaces arranged opposite to each other along the width direction (Y), one of the first wall surfaces being an inclined surface abutting against the adjacent side wall (221), and the other first wall surface being a vertical surface abutting against the inner side wall of the positioning groove (211); The second pressing plate (241) has two second wall surfaces arranged opposite to each other along the width direction (Y), one of the second wall surfaces being an inclined surface fitted with the adjacent side wall (221), and the other second wall surface being a vertical surface fitted with the inner side wall of the groove to be processed.

3. The positioning tool according to claim 1, characterized in that: At least two of the workpieces (100) include a first workpiece (100a) and a second workpiece (100b); The first workpiece (100a) comprises a first cylinder (120a), the first cylinder (120a) having a first open end (121a) and a first end plate (122a) arranged opposite to each other along an axial direction (X), a support plate (130a) being connected to the first cylinder (120a), a first mounting portion (110a) on the first workpiece (100a) surrounding the first open end (121a) along the circumference of the first cylinder (120a), a first positioning hole (131a) being provided on the support plate (130a) along the axial direction (X), and a second positioning hole (1221a) being coaxial with the first positioning hole (131a) being provided on the first end plate (122a); The second workpiece (100b) comprises a second cylinder (120b), the second cylinder (120b) having a second open end (121b) and a second end plate (122b) arranged opposite to each other in an axial direction (X); the second mounting portion (110b) on the second workpiece (100b) surrounds the second open end (121b) along the circumference of the second cylinder (120b); and the second end plate (122b) is provided with a third positioning hole (1221b) coaxial with the first positioning hole (131a); The template (210) is provided with a positioning through hole (212) coaxial with the first positioning hole (131a).

4. A method for positioning processing using the positioning tool according to any one of claims 1 to 3, characterized in that: The steps include: S1. Assemble template and workpiece: The template (210) and the mounting portion (110) of the workpiece (100) are stacked in an axial direction (X), and at least two positioning grooves (211) on the template (210) and at least two grooves to be processed on the mounting portion (110) are aligned one-to-one in the axial direction (X) and connected to each other, thereby forming at least two groups of connected positioning grooves (211) and grooves to be processed; S2. Install the positioning components: Installing the bottom plate (220) in the connected positioning groove (211) and the groove to be processed; The two clamping plates (250) are respectively connected to the two ends of the bottom plate (220) in the axial direction (X) to clamp the template (210) and the mounting portion (110) in the axial direction (X); The two first pressing plates (231) are respectively brought into contact with the inner side walls of the positioning groove (211); The two second pressing plates (241) are respectively brought into contact with the inner side walls of the groove to be processed; S3. Processing to form the installation groove: S31, in at least two groups of connected positioning grooves (211) and grooves to be processed, removing the positioning components installed in one group of connected positioning grooves (211) and grooves to be processed, retaining the positioning components installed in the other group of connected positioning grooves (211) and grooves to be processed, and processing the grooves to be processed to form installation grooves (111); S32, after forming the installation groove (111), installing a positioning assembly in the connected positioning groove (211) and the installation groove (111), and the two second pressing plates (241) respectively abut against the inner side walls of the installation groove (111); S33, removing the positioning components installed in another set of connected positioning grooves (211) and the groove to be processed, and processing the groove to be processed to form the installation groove (111).

5. The positioning processing method according to claim 4, characterized in that: In step S1, the number of the positioning grooves (211) is at least four, and they are arranged at intervals along the circumference of the template (210), forming at least four groups of interconnected positioning grooves (211) and grooves to be processed; In step S31, the positioning components installed in one group of interconnected positioning grooves (211) and the grooves to be processed are removed, and the positioning components installed in the other three groups of interconnected positioning grooves (211) and the grooves to be processed are retained.

6. The positioning processing method according to claim 5, characterized in that: In step S1, the number of workpieces (100) is at least two, the template (210) and the mounting portions (110) of at least two workpieces (100) are stacked along the axial direction (X), and the positioning groove (211) and the two grooves to be processed are sequentially connected along the axial direction (X); In step S3, two connected grooves to be processed are processed simultaneously to form a mounting groove (111).

7. The positioning processing method according to claim 6, characterized in that: The distance between the two inner side walls of the installation groove (111) is consistent with the distance between the two inner side walls of the positioning groove (211).

8. The positioning processing method according to claim 6, wherein: Step S1 also includes: Insert the first cylinder (120a) into the second cylinder (120b), overlap the first mounting portion (110a) and the second mounting portion (110b) along the axial direction (X), use the line connecting the central axes of the first positioning hole (131a) and the second positioning hole (1221a) as a reference line, measure the deviation between the central axis of the third positioning hole (1221b) and the reference line, and adjust the relative position of the first cylinder (120a) and the second cylinder (120b) according to the deviation value so that the central axis of the third positioning hole (1221b) coincides with the reference line; The template (210) is superimposed on the first mounting portion (110a) along the axial direction (X), the deviation value between the central axis of the positioning through hole (212) and the reference line is measured, and the position of the template (210) is adjusted according to the deviation value so that the central axis of the positioning through hole (212) coincides with the reference line.

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