CN217647931U - Lower tube seat rib saw groove clamp - Google Patents
Lower tube seat rib saw groove clamp Download PDFInfo
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- CN217647931U CN217647931U CN202123098381.6U CN202123098381U CN217647931U CN 217647931 U CN217647931 U CN 217647931U CN 202123098381 U CN202123098381 U CN 202123098381U CN 217647931 U CN217647931 U CN 217647931U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model belongs to the technical field of nuclear power, concretely relates to lower tube seat rib kerf anchor clamps. In the disclosure, a groove is arranged on a first side surface of a base along the radial direction, the bottom of the groove is parallel to a second side surface of the base, and the second side surface is opposite to the first side surface; a plurality of rib workpieces are arranged in the groove from top to bottom, and the part to be processed of each rib workpiece faces to the notch of the groove; the first pressing plate is connected to one end of the first side face of the base through a bolt, the second pressing plate is connected to the other end of the first side face of the base through a bolt, the first pressing plate and the second pressing plate are pressed to two ends of a plurality of rib workpieces respectively, a plurality of thread through holes penetrating through the upper surface and the groove are formed in the upper surface of the base in the axial direction, a compression screw is connected to the inner thread of each thread through hole in a threaded mode, and the lower end of each compression screw is pressed to the top end of the uppermost rib workpiece in the plurality of rib workpieces. By using the clamp disclosed by the invention, the processing quality of the ribs can be ensured; the clamp is compatible with the processing of the groove sawing process of the upper rib and the lower rib, and is convenient to operate.
Description
Technical Field
The invention belongs to the technical field of nuclear power, and particularly relates to a lower pipe seat rib kerf clamp.
Background
The ribs are one of the key parts in the lower seat part of the fuel assembly, and mainly have the functions of ensuring the rigidity and the strength of the fuel assembly, bearing the weight of the whole fuel assembly, controlling the flow distribution of the coolant passing through each fuel assembly, and filtering foreign matters by utilizing the geometry of the flow passage, thereby reducing the fuel breakage caused by the abrasion of the foreign matters.
The lower tube seat ribs comprise lower ribs and upper ribs, in the groove sawing process, raw materials are plates which are processed in place in appearance, chamfer angles and the like and have certain width and thickness, the processing content comprises the width and depth of the groove, the requirements on the groove depth, the groove width and the position tolerance are high, and the number of workpieces is large. How to guarantee the processing precision and the processing efficiency of the ribs is called as the problem to be solved urgently.
Disclosure of Invention
In order to overcome the problems in the prior art, the lower pipe seat rib saw groove clamp is provided.
According to an aspect of the disclosed embodiment, there is provided a lower tube seat fillet kerf clamp, including: the device comprises a base, a first pressing plate and a second pressing plate;
the base is a cuboid, a groove is formed in a first side surface of the base along the radial direction, the bottom of the groove is parallel to a second side surface of the base, and the second side surface is opposite to the first side surface;
a plurality of rib workpieces are arranged in the groove from top to bottom, and the part to be processed of each rib workpiece faces to the notch of the groove;
the first pressing plate is connected to one end of the first side face of the base through a bolt, the second pressing plate is connected to the other end of the first side face of the base through a bolt, and the first pressing plate and the second pressing plate are respectively pressed against two ends of the plurality of rib workpieces and used for limiting radial displacement of the rib workpieces in the grooves;
the upper surface of the base is provided with a plurality of thread through holes which penetrate through the upper surface and the groove along the axial direction, each thread through hole is internally threaded with a compression screw, and the lower end of each compression screw presses against the top end of the uppermost rib workpiece in the plurality of rib workpieces and is used for limiting the axial displacement of the plurality of rib workpieces in the groove.
In one possible implementation, the lower seat pan tendon kerf clamp further comprises: auxiliary layering;
the auxiliary pressing strip is arranged at the top end of the rib workpiece at the top in the plurality of rib workpieces, and the lower end of each compression screw presses against the top end of the auxiliary pressing strip.
In a possible implementation manner, the first pressing plate is connected with the bottom plate through a first bolt and a second bolt, a through groove is formed in a position where the first pressing plate is connected with the second bolt, and the second bolt can be separated from the through groove of the first pressing plate by moving the first pressing plate;
the second pressing plate is connected with the bottom plate through a third bolt and a fourth bolt, a through groove is formed in the position where the second pressing plate is connected with the fourth bolt, and the fourth bolt can be separated from the through groove of the second pressing plate by moving the second pressing plate.
In one possible implementation, the groove bottom is parallel to the second side surface by less than 0.025 mm.
In one possible implementation, the parallelism of the inner side surface of the groove and the upper surface of the base is less than 0.025 mm.
In a possible implementation manner, a first abdicating groove is formed in the bottom of the groove and opposite to each threaded through hole, and each compression screw is arranged in the first abdicating groove.
In a possible implementation mode, the two ends of the bottom of the groove are respectively provided with a second abdicating groove, and the shape of each second abdicating groove is matched with the protruding shape of the end part of the rib workpiece.
In one possible implementation, the surface between the upper edge of the first side face and the upper edge of the groove is a slope, and the slope gradually inclines towards the groove bottom of the groove from top to bottom.
In a possible implementation manner, the first side surface of the base is provided with a plurality of positioning through holes along the radial direction, and the relative positions of the plurality of positioning through holes are matched with the positions of the positioning pins of the processing machine tool.
In a possible implementation manner, the base is fixedly connected with the processing machine tool through a positioning bolt.
The beneficial effect of this disclosure lies in: by using the clamp disclosed by the invention, the processing quality of the rib can be ensured; the clamp is compatible with the processing of the groove sawing process of the upper and lower ribs, and is convenient to operate; the clamp fully considers the factors such as batch production and the like, improves the production efficiency and has good economic value; the problem of independently under fuel assembly pipe seat rib processing bottleneck is solved.
Drawings
FIG. 1 is a front view of a lower seat tube tendon kerf clamp shown in accordance with an exemplary embodiment.
Figure 2 is a cross-sectional view of a lower seat tube tendon kerf clamp shown in accordance with an exemplary embodiment.
FIG. 3 is a perspective view of a base of a lower seat tube tendon kerf clamp shown in accordance with an exemplary embodiment.
FIG. 4 is a schematic view of a first platen of a lower seat tube tendon sawing groove clamp shown in accordance with an exemplary embodiment.
In the figure:
1. a base; 11. threaded through holes, 12, inclined planes; 13, a yielding groove; 2. a first platen;
21. a through groove; 3. a second platen; 4. auxiliary layering; 5. a compression screw; 6. a rib workpiece;
7. a first abdicating groove; 8. a second abdicating groove; 9. positioning the through hole; 10. and (4) countersinking.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
Figure 1 is a front view of a lower seat tube tendon kerf clamp shown in accordance with an exemplary embodiment. Figure 2 is a cross-sectional view of a lower seat tube tendon kerf clamp shown in accordance with an exemplary embodiment. As shown in fig. 1 and 2, the lower tube seat fillet kerf clamping device comprises: a base 1, a first press plate 2 and a second press plate 3;
the base 1 is a cuboid, a groove is formed in a first side face of the base 1 along the radial direction, the bottom of the groove is parallel to a second side face of the base 1, and the second side face is opposite to the first side face;
a plurality of rib workpieces 6 are arranged in the groove from top to bottom, and the part to be processed of each rib workpiece 6 faces to the notch of the groove;
the first pressing plate 2 is connected to one end of the first side surface of the base 1 through a bolt, the second pressing plate 3 is connected to the other end of the first side surface of the base 1 through a bolt, and the first pressing plate 2 and the second pressing plate 3 are respectively pressed against two ends of the plurality of rib workpieces 6 and used for limiting radial displacement of the rib workpieces 6 in the grooves;
the upper surface of the base 1 is provided with a plurality of thread through holes 11 which penetrate through the upper surface and the groove along the axial direction, each thread through hole 11 is internally threaded with one compression screw 5, and the lower end of each compression screw 5 presses against the top end of the uppermost rib workpiece 6 in the plurality of rib workpieces 6 and is used for limiting the axial displacement of the plurality of rib workpieces 6 in the groove.
By using the clamp disclosed by the invention, the processing quality of the ribs can be ensured; the clamp is compatible with the processing of the groove sawing process of the upper and lower ribs, and is convenient to operate; the clamp fully considers the factors such as batch production and the like, improves the production efficiency and has good economic value; the problem of independently under fuel assembly pipe seat rib processing bottleneck is solved.
In one possible implementation, as shown in fig. 1 and 2, the lower seat fin kerf clamp further comprises: an auxiliary pressing bar 4; the auxiliary pressing strip 4 is arranged at the top end of the rib workpiece 6 at the uppermost part in the rib workpieces 6, and the lower end of each compression screw 5 presses against the top end of the auxiliary pressing strip 4.
In a possible implementation manner, the first pressing plate 2 is connected to the bottom plate through a first bolt and a second bolt, as shown in fig. 4, a through groove 21 is formed at a position where the first pressing plate 2 is connected to the second bolt, and the second bolt can be separated from the through groove 21 of the first pressing plate 2 by moving the first pressing plate 2;
the second pressing plate is connected with the bottom plate through a third bolt and a fourth bolt, a through groove is formed in the position where the second pressing plate is connected with the fourth bolt, and the fourth bolt can be separated from the through groove of the second pressing plate by moving the second pressing plate.
In one possible implementation, the groove bottom is parallel to the second side surface by less than 0.025 mm.
In one possible implementation, the parallelism of the inner side surface of the groove and the upper surface of the base is less than 0.025 mm.
Fig. 3 is a perspective view of a base of a lower pipe seat rib groove sawing clamp according to an exemplary embodiment, as shown in fig. 3, a first abdicating groove 7 is formed at a position of a groove bottom of the groove opposite to each threaded through hole, and each compression screw 5 is arranged in one first abdicating groove 7.
In a possible implementation manner, the two ends of the bottom of the groove are respectively provided with a second abdicating groove 8, and the shape of each second abdicating groove 8 is matched with the protruding shape of the end part of the rib workpiece 6.
In a possible realization, as shown in fig. 3, the surface between the upper edge of the first flank to the upper edge of the groove is a bevel 12 which slopes gradually towards the groove bottom in the order from top to bottom. The surface of the lower edge of the groove is provided with a yielding groove 13, and the depth of the yielding groove 13 is smaller than that of the groove.
In a possible implementation manner, as shown in fig. 1, a plurality of positioning through holes 9 are formed in the first side surface of the base, and the relative positions of the positioning through holes are matched with the positions of the positioning pins of the processing machine tool.
In a possible implementation manner, as shown in fig. 1, a plurality of countersunk holes 10 are radially formed in the first side surface of the base, and the relative positions of the plurality of countersunk holes are matched with the relative positions of the positioning threaded holes of the processing machine tool, so that the positioning bolts of the base, which are screwed into each countersunk hole and the corresponding positioning threaded hole, are fixedly connected with the processing machine tool.
In a due example, the clamp is installed on a machine tool by a positioning pin and fixed by a screw, and the clamp needs to be aligned for the first time, does not need to be aligned when the clamp is replaced and clamped for the second time, and can be put into production quickly. The ribs are first loaded, and 1 to 8 pieces can be loaded at a time. Then, an auxiliary bead can be inserted and naturally pre-pressed into contact with the side screw. And horizontally moving the pressing plate to the position above the ribs (the opening groove of the pressing plate is moved to the position below the screw), and pressing to enable the ribs to be tightly attached to the bottom surface of the groove of the base. The side screws are uniformly and symmetrically compressed, so that the auxiliary pressing strips compress the ribs. And starting the processing.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. The utility model provides a lower tube seat rib kerf anchor clamps, its characterized in that, lower tube seat rib kerf anchor clamps include: the device comprises a base, a first pressing plate and a second pressing plate;
the base is a cuboid, a groove is formed in a first side surface of the base along the radial direction, the bottom of the groove is parallel to a second side surface of the base, and the second side surface is opposite to the first side surface;
a plurality of rib workpieces are arranged in the groove from top to bottom, and the part to be processed of each rib workpiece faces the notch of the groove;
the first pressing plate is connected to one end of the first side face of the base through a bolt, the second pressing plate is connected to the other end of the first side face of the base through a bolt, and the first pressing plate and the second pressing plate are respectively pressed against two ends of the plurality of rib workpieces and used for limiting radial displacement of the rib workpieces in the grooves;
the upper surface of the base is provided with a plurality of threaded through holes which penetrate through the upper surface and the groove along the axial direction, each threaded through hole is internally connected with a compression screw in a threaded manner, and the lower end of each compression screw presses against the top end of the uppermost rib workpiece in the plurality of rib workpieces to limit the axial displacement of the plurality of rib workpieces in the groove.
2. The bottom tube seat fillet kerf clamp of claim 1, further comprising: auxiliary layering;
the auxiliary pressing strip is arranged at the top end of the rib workpiece at the top in the plurality of rib workpieces, and the lower end of each compression screw presses against the top end of the auxiliary pressing strip.
3. The lower seat tube rib kerf clamp of claim 1, wherein the first pressure plate is connected to a bottom plate by a first bolt and a second bolt, a through slot is formed at a position where the first pressure plate is connected to the second bolt, and the second bolt can be separated from the through slot of the first pressure plate by moving the first pressure plate;
the second pressing plate is connected with the bottom plate through a third bolt and a fourth bolt, a through groove is formed in the position where the second pressing plate is connected with the fourth bolt, and the fourth bolt can be separated from the through groove of the second pressing plate by moving the second pressing plate.
4. The lower seat tube bead kerf clamp of claim 1, wherein a parallelism of the groove floor to the second side is less than 0.025 mm.
5. The lower seat tube bead kerf clamp of claim 1, wherein the parallelism of the groove inner side surface and the base upper surface is less than 0.025 mm.
6. The lower seat tube rib kerf clamp of claim 1, wherein a first relief groove is formed at a position of a bottom of the groove opposite to each threaded through hole, and each compression screw is arranged in one first relief groove.
7. The lower pipe seat rib kerf clamp of claim 1, wherein second abdicating grooves are respectively formed at two ends of the bottom of the groove, and the shape of each second abdicating groove is matched with the protruding shape of the end part of the rib workpiece.
8. The lower seat tube tendon sawing jig of claim 1 wherein the surface between the upper edge of the first side to the upper edge of the groove is a bevel that gradually slopes in an order from top to bottom towards the groove bottom.
9. The lower pipe seat rib kerf clamp of claim 1, wherein a plurality of positioning through holes are radially formed in the first side surface of the base, and the relative positions of the positioning through holes are matched with the positions of positioning pins of a processing machine tool.
10. The lower tube seat rib kerf clamp of claim 1, wherein the base is fixedly connected to a machining tool by a positioning bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123098381.6U CN217647931U (en) | 2021-12-10 | 2021-12-10 | Lower tube seat rib saw groove clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123098381.6U CN217647931U (en) | 2021-12-10 | 2021-12-10 | Lower tube seat rib saw groove clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217647931U true CN217647931U (en) | 2022-10-25 |
Family
ID=83659241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123098381.6U Active CN217647931U (en) | 2021-12-10 | 2021-12-10 | Lower tube seat rib saw groove clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217647931U (en) |
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2021
- 2021-12-10 CN CN202123098381.6U patent/CN217647931U/en active Active
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