CN215789247U - Tool clamp for connecting plate of pipe seat on fuel assembly - Google Patents
Tool clamp for connecting plate of pipe seat on fuel assembly Download PDFInfo
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- CN215789247U CN215789247U CN202023167561.0U CN202023167561U CN215789247U CN 215789247 U CN215789247 U CN 215789247U CN 202023167561 U CN202023167561 U CN 202023167561U CN 215789247 U CN215789247 U CN 215789247U
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Abstract
The utility model particularly relates to a fixture for a fuel assembly upper pipe seat connecting plate, which comprises a fixture for machining the front side of the fuel assembly upper pipe seat connecting plate and a fixture for machining the back side of the fuel assembly upper pipe seat connecting plate, wherein the fixture for machining the front side of the fuel assembly upper pipe seat connecting plate is a positioning and clamping fixture, and the fixture for machining the back side of the fuel assembly upper pipe seat connecting plate is a positioning pin fixture. The fixture for the connecting plate of the upper pipe seat on the fuel assembly provided by the utility model has the advantages of reliable positioning and clamping, small positioning error of secondary clamping, short processing auxiliary time, small cutting stress deformation and low repair rate, can meet the requirements of shape and position precision and size precision of the front surface and the back surface of the connecting plate of the upper pipe seat on the fuel assembly, and realizes the mass production of the connecting plate of the upper pipe seat on the fuel assembly.
Description
Technical Field
The utility model belongs to the technical field of nuclear fuel assemblies, and particularly relates to a fixture for a pipe seat connecting plate on a fuel assembly.
Background
The upper pipe seat connecting plate structure of the 'Hualong I' is complex and unique, the fluctuation of the overall dimension of a blank is large and irregular, the number of connecting plate holes is large, the condition that a workpiece is loosened or deformed often occurs in parallel jaw vice clamping used in the prior art, the requirements of flatness, parallelism, position degree, coaxiality and form and position tolerance precision of the upper pipe seat connecting plate on a fuel assembly cannot be met, and the processing efficiency is low, the labor intensity is high, and the batch production of the workpiece is not facilitated.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a fuel assembly upper tube seat connecting plate frock clamp to the problem that current parallel jaw can not satisfy the requirement of fuel assembly upper tube seat connecting plate positive, two side form and position precision and size precision on the contrary, and this anchor clamps can satisfy the requirement of fuel assembly upper tube seat connecting plate positive, two side form and position precision and size precision on the contrary, realizes the mass production of fuel assembly upper tube seat connecting plate.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the utility model provides a tube socket connecting plate frock clamp on fuel assembly, includes that tube socket connecting plate openly processes with anchor clamps and tube socket connecting plate reverse side processing with anchor clamps on fuel assembly, the tube socket connecting plate openly processes with anchor clamps for the location presss from both sides tight anchor clamps, tube socket connecting plate reverse side processing is with anchor clamps for the locating pin anchor clamps on fuel assembly. Further, the positioning and clamping fixture comprises a first substrate, a first base, supporting blocks, positioning blocks and a sliding pressing plate, the first base is fixedly installed on the first substrate, the first base is in a square plate shape, the supporting blocks are fixedly installed on four corners of the first base, the positioning blocks are fixedly installed on a pair of right-angle edges of the first base, the sliding pressing plate is slidably installed on the other pair of right-angle edges of the first fastening base, and the positioning blocks and the sliding pressing plate are both located on the outer sides of the supporting blocks.
Furthermore, the supporting block is in interference fit with mounting holes in four corners of a bottom plate of the tube seat connecting plate on the fuel assembly, the positioning block and the sliding pressure plate are both arranged outside the supporting block, a space between the supporting block and the positioning block is a clamping space for a pair of right-angled frames of the tube seat connecting plate on the fuel assembly, a space between the supporting block and the sliding pressure plate is a clamping space for another pair of right-angled frames of the tube seat connecting plate on the fuel assembly, and a space between the supporting blocks is a clamping space for the bottom plate of the tube seat connecting plate on the fuel assembly.
Furthermore, two positioning blocks are symmetrically arranged on one right-angle side of the pair of right-angle sides of the first base, and one positioning block is arranged in the center of the other right-angle side of the pair of right-angle sides of the first base.
Furthermore, two sliding pressing plates are symmetrically arranged on one right-angle side of the other pair of right-angle sides of the first base, and one sliding pressing plate is arranged in the center of the other right-angle side of the other pair of right-angle sides of the first base.
Furthermore, the right-angle sides for installing the two positioning blocks are opposite to the right-angle sides for installing the two sliding pressure plates, and the right-angle side for installing one positioning block is opposite to the right-angle side for installing one sliding pressure plate.
Furthermore, the positioning block is of a structure with two flat sides and a middle bulge.
Furthermore, the sliding pressing plate is of a structure with two flat sides and a middle bulge.
Furthermore, a first threaded hole matched with the first screw is formed in the center of the sliding pressure plate, and the sliding pressure plate is fixed through the first screw.
Further, the locating pin anchor clamps include second base plate, second base, third base, fixed frame, on the second base plate respectively fixed mounting mutually perpendicular's second base and third base, fixed frame fixed mounting in on second base and the third base, the four corners department that lies in fixed frame on the second base sets up the locating pin.
Furthermore, there are two second bases, and the two second bases are symmetrically installed on the second substrate respectively.
Furthermore, there are two third bases symmetrically mounted on the second substrate.
Further, the locating pin is with the mounting hole interference fit on four angles of the bottom plate of tube seat connecting plate on the fuel assembly, the right angle frame of tube seat connecting plate is settled on fixed frame on the fuel assembly, space between the locating pin is the centre gripping space of the bottom plate of tube seat connecting plate on the fuel assembly.
Furthermore, two first protruding blocks are symmetrically arranged at two ends of the second base, two round tables are symmetrically arranged at two ends of the third base, the fixing frame is arranged on the first protruding blocks and the round tables, and the fixing frame is fixed with the second base and the third base through screws.
Further, a second lug is arranged at the center of the second base, a second threaded hole matched with the second screw is formed in the center of the second lug, a second threaded hole matched with the second screw is formed in the corresponding position of the fixing frame, and the fixing frame is fixed to the second base through the second screw.
Further, third screw hole that matches with the third screw is set up at the third base center, the third screw hole that matches with the third screw is set up to the corresponding position of fixed frame, fixed frame with the third base passes through the third screw fixation.
Further, the fixed frame outside side sets up the fourth screw hole that matches with the fourth screw, fixed frame with the tube seat connecting plate passes through the fourth screw realization horizontal fixation on the fuel assembly. The fourth screw provides a transverse clamping force to connect the fixing frame and the connecting plate of the upper tube seat of the fuel assembly into a whole.
Further, the first screw, the second screw, the third screw and the fourth screw are all standard M8 screws.
The positioning and clamping fixture adopts four supporting blocks, three positioning blocks for positioning and three sliding pressing plates for clamping the pipe seat connecting plate on the fuel assembly. The locating surface and the clamping surface are reduced, and the clamping force acts on the position with high strength of the pipe seat connecting plate on the fuel assembly. The influence of the overall dimension of the blank on the positioning and clamping is reduced, and the positioning and clamping of the connecting plate of the upper tube seat of the fuel assembly are more reliable.
The positioning pin clamp adopts four pins on one surface for positioning, the fourth screw is downwards compressed with the fixed frame, the second screw and the third screw, and the direction of the compression force is just vertical to the direction of the cutting force, so that the upper pipe seat connecting plate on the fuel assembly can be reliably clamped without too large clamping force. The rigidity of the upper pipe seat connecting plate of the fuel assembly in the vertical direction is good, and the deformation of the upper pipe seat connecting plate of the fuel assembly is small under the influence of clamping force, so that the requirement of geometric tolerance is met. This frock can be equipped with a plurality of fixed frames, is connected upper tube base connecting plate and fixed frame with fuel assembly in advance, reduces the processing assistance-time.
The utility model has the beneficial technical effects that:
the fixture for the connecting plate of the upper pipe seat on the fuel assembly provided by the utility model has the advantages of reliable positioning and clamping, small positioning error of secondary clamping, short processing auxiliary time, small cutting stress deformation and low repair rate, can meet the requirements of shape and position precision and size precision of the front surface and the back surface of the connecting plate of the upper pipe seat on the fuel assembly, and realizes the mass production of the connecting plate of the upper pipe seat on the fuel assembly.
Drawings
FIG. 1 is a schematic view of a connection plate structure of an upper nozzle of a fuel assembly;
FIG. 2 is a cross-sectional view of the connection plate A-A of the upper nozzle of the fuel assembly;
FIG. 3 is an exploded view of the machining state of the jig for machining the front face of the connecting plate of the upper tube seat of the fuel assembly;
FIG. 4 is an exploded view of a machining state of a fixture for machining the reverse side of a connecting plate of an upper tube seat of a fuel assembly;
FIG. 5 is a plan view of a machining state of a fixture for machining the reverse side of a connecting plate of an upper tube seat of a fuel assembly;
FIG. 6 is a front view of a machining state of a fixture for machining the reverse side of a connecting plate of an upper tube seat of a fuel assembly;
FIG. 7 is a second base top view;
FIG. 8 is a front view of a second base;
FIG. 9 is a front view of a third base;
fig. 10 is a left side view of the third base.
Wherein:
1. a fuel assembly upper nozzle support connection plate; 2. a first substrate, 3, a first base; 4. a support block; 5. positioning blocks; 6. a sliding platen; 7. a second substrate; 8. a second base; 9. a third base; 10. a fixing frame; 11. positioning pins; 12. a first screw; 13. a second screw; 14. a third screw; 15. a fourth screw; 16. a first bump; 17. a second bump; 18. a round table.
Detailed Description
The utility model provides a tube socket connecting plate frock clamp on fuel assembly, includes that tube socket connecting plate openly processes with anchor clamps and tube socket connecting plate reverse side processing with anchor clamps on fuel assembly, the tube socket connecting plate openly processes with anchor clamps for the location presss from both sides tight anchor clamps, tube socket connecting plate reverse side processing is with anchor clamps for the locating pin anchor clamps on fuel assembly.
Further, the positioning and clamping fixture comprises a first substrate 2, a first base 3, a supporting block 4, a positioning block 5 and a sliding pressing plate 6, the first base 3 is fixedly installed on the first substrate 2, the first base 3 is square plate-shaped, the supporting block 4 is fixedly installed at four corners of the first base 3, the positioning block 5 is fixedly installed on one pair of right-angled edges of the first base 3, the sliding pressing plate 6 is slidably installed on the other pair of right-angled edges of the first fastening base, and the positioning block 5 and the sliding pressing plate 6 are both located outside the supporting block 4.
Further, the support block 4 is in interference fit with mounting holes on four corners of a bottom plate of the tube seat connecting plate 1 on the fuel assembly, the positioning block 5 and the sliding pressure plate 6 are both located outside the support block 4, a space between the support block 4 and the positioning block 5 is a clamping space of a pair of right-angled frames of the tube seat connecting plate 1 on the fuel assembly, a space between the support block 4 and the sliding pressure plate 6 is a clamping space of another pair of right-angled frames of the tube seat connecting plate 1 on the fuel assembly, and a space between the support blocks 4 is a clamping space of a bottom plate of the tube seat connecting plate 1 on the fuel assembly.
Furthermore, two positioning blocks 5 are symmetrically installed on one right-angle side of the pair of right-angle sides of the first base 3, and one positioning block 5 is installed in the center of the other right-angle side of the pair of right-angle sides of the first base 3.
Furthermore, two sliding pressing plates 6 are symmetrically arranged on one right-angle side of the other pair of right-angle sides of the first base 3, and one sliding pressing plate 6 is arranged in the center of the other right-angle side of the other pair of right-angle sides of the first base 3.
Furthermore, the right-angle sides for installing the two positioning blocks 5 are opposite to the right-angle sides for installing the two sliding pressing plates 6, and the right-angle side for installing one positioning block 5 is opposite to the right-angle side for installing one sliding pressing plate 6.
Furthermore, the positioning block 5 is a structure with two flat sides and a middle bulge.
Further, the sliding pressing plate 6 is of a structure with two flat sides and a middle convex.
Further, a first threaded hole matched with the first screw 12 is formed in the center of the sliding pressure plate 6, and the sliding pressure plate 6 is fixed through the first screw 12.
Further, 11 anchor clamps of locating pin include second base plate 7, second base 8, third base 9, fixed frame 10, respectively fixed mounting mutually perpendicular's second base 8 and third base 9 on the second base plate 7, fixed frame 10 fixed mounting in on second base 8 and the third base 9, the four corners department that lies in fixed frame 10 on the second base 8 sets up locating pin 11.
Further, there are two second susceptors 8, which are symmetrically mounted on the second substrate 7.
Further, there are two third susceptors 9, which are symmetrically mounted on the second substrate 7.
Further, mounting hole interference fit on locating pin 11 and four angles of the bottom plate of tube seat connecting plate 1 on the fuel assembly, the right angle frame of tube seat connecting plate 1 on the fuel assembly is settled on fixed frame 10, the space between locating pin 11 is the centre gripping space of the bottom plate of tube seat connecting plate 1 on the fuel assembly.
Furthermore, two first protruding blocks 16 are symmetrically arranged at two ends of the second base 8, two circular truncated cones 18 are symmetrically arranged at two ends of the third base 9, the fixing frame 10 is arranged on the first protruding blocks 16 and the circular truncated cones 18, and the fixing frame 10 is fixed with the second base 8 and the third base 9 through screws.
Further, a second protruding block 17 is arranged at the center of the second base 8, a second threaded hole matched with the second screw 13 is arranged at the center of the second protruding block 17, a second threaded hole matched with the second screw 13 is arranged at the corresponding position of the fixing frame 10, and the fixing frame 10 is fixed to the second base 8 through the second screw 13.
Furthermore, a third threaded hole matched with the third screw 14 is formed in the center of the third base 9, a third threaded hole matched with the third screw 14 is formed in a corresponding position of the fixing frame 10, and the fixing frame 10 and the third base 9 are fixed through the third screw 14.
Further, a fourth threaded hole matched with a fourth screw 15 is formed in the outer side face of the fixing frame 10, and the fixing frame 10 and the fuel assembly upper tube seat connecting plate 1 are transversely fixed through the fourth screw 15. The fourth screw 15 provides a lateral clamping force to connect the fixing frame 10 and the fuel assembly top nozzle connecting plate 1 as a whole.
Further, the first screw 12, the second screw 13, the third screw 14 and the fourth screw 15 are all standard M8 screws.
The positioning and clamping fixture adopts four supporting blocks 4, three positioning blocks 5 for positioning and three sliding press plates 6 for clamping the connecting plate 1 of the upper tube seat of the fuel assembly. The positioning surface and the clamping surface are reduced, and the clamping force acts on the high-strength position of the connecting plate 1 of the tube seat on the fuel assembly. The influence of the overall dimension of the blank on the positioning and clamping is reduced, and the positioning and clamping of the connecting plate 1 of the upper tube seat of the fuel assembly are more reliable.
The clamp of the positioning pin 11 adopts one-surface four-pin positioning, the fourth screw 15 is downwards pressed with the fixed frame 10, the second screw 13 and the third screw 14, and the direction of the pressing force is just vertical to the direction of the cutting force, so that the upper tube seat connecting plate 1 of the fuel assembly can be reliably clamped without too large clamping force. The rigidity of the upper pipe seat connecting plate 1 of the fuel assembly in the vertical direction is good, and the deformation of the upper pipe seat connecting plate 1 of the fuel assembly is small under the influence of clamping force, so that the requirement of form and position tolerance is met. The tool can be provided with a plurality of fixed frames 10, and the fuel assembly upper tube seat connecting plate 1 is connected with the fixed frames 10 in advance, so that the processing auxiliary time is shortened.
The method comprises the following steps:
positioning and clamping the fixture: the upper tube seat connecting plate 1 of the fuel assembly is horizontally placed on the supporting block 4, the upper tube seat connecting plate 1 of the fuel assembly is horizontally moved to be tightly attached to the positioning block 5, and then the first screw 12 is screwed until the fuel assembly is clamped.
Positioning pin 11 clamp: the fuel assembly upper tube socket connecting plate 1 is placed on the platform, the fixing frame 10 is fixed on the fuel assembly upper tube socket connecting plate 1 by tightening the fourth screw 15, the fuel assembly upper tube socket connecting plate 1 and the fixing frame 10 are placed on the base and are positioned by using the positioning pin 11, and then the second screw 13 and the third screw 14 are tightened until the fastening is reliable.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a tube socket connecting plate frock clamp on fuel assembly which characterized in that, openly processes with anchor clamps and the processing of fuel assembly tube socket connecting plate reverse side with anchor clamps including fuel assembly tube socket connecting plate, the openly processing of fuel assembly tube socket connecting plate is for the tight anchor clamps of location clamp, the processing of fuel assembly tube socket connecting plate reverse side is for the locating pin anchor clamps.
2. The tube mount connecting plate tooling fixture on a fuel assembly of claim 1, wherein the positioning and clamping fixture comprises a first base plate, a first base fixedly mounted on the first base plate, the first base having a square plate shape, support blocks fixedly mounted at four corners of the first base, positioning blocks fixedly mounted on one pair of right-angled edges of the first base, a support block, a positioning block, and a sliding pressure plate slidably mounted on the other pair of right-angled edges of the first base, the positioning block and the sliding pressure plate being outside the support blocks.
3. The tube mount connecting plate tooling fixture on a fuel assembly of claim 2, wherein the support blocks are in interference fit with mounting holes at four corners of a bottom plate of the tube mount connecting plate on the fuel assembly, the locating blocks and the sliding pressing plates are both outside the support blocks, a space between the support blocks and the locating blocks is a clamping space of a pair of right-angled frames of the tube mount connecting plate on the fuel assembly, a space between the support blocks and the sliding pressing plates is a clamping space of another pair of right-angled frames of the tube mount connecting plate on the fuel assembly, and a space between the support blocks is a clamping space of the bottom plate of the tube mount connecting plate on the fuel assembly.
4. The nozzle mount connecting plate tooling clamp on a fuel assembly of claim 2, wherein two locating blocks are symmetrically mounted on one of the pair of right-angled sides of the first base, and one locating block is mounted at the center of the other of the pair of right-angled sides of the first base.
5. The nozzle plate attachment plate frock clamp on fuel assembly of claim 2 wherein two sliding pressure plates are symmetrically mounted on one of the other pair of right-angled sides of the first base, and one sliding pressure plate is mounted at the center of the other pair of right-angled sides of the first base.
6. The tube seat connecting plate tooling clamp on a fuel assembly of claim 2, wherein the sliding pressure plate is centrally provided with a first threaded hole matched with a first screw, and the sliding pressure plate is fixed by the first screw.
7. The pipe seat connecting plate frock clamp on fuel assembly of claim 1, characterized in that, the locating pin anchor clamps include second base plate, second base, third base, fixed frame, on the second base plate respectively fixed mounting mutually perpendicular's second base and third base, fixed frame fixed mounting on second base and third base, be located the four corners department of fixed frame on the second base and set up the locating pin.
8. The tube seat connecting plate frock clamp on fuel assembly of claim 6, wherein, the locating pin is with the mounting hole interference fit on four angles of the bottom plate of tube seat connecting plate on the fuel assembly, the right angle frame of tube seat connecting plate on the fuel assembly is settled on fixed frame, the space between the locating pin is the centre gripping space of the bottom plate of tube seat connecting plate on the fuel assembly.
9. The nozzle link plate tooling fixture on a fuel assembly of claim 7, wherein the stationary frame is fixed with the second and third bases by screws; the fixing frame and the second base are fixed through a second screw; the fixing frame and the third base are fixed through a third screw.
10. The tube seat connecting plate frock clamp on fuel assembly of claim 6, wherein fixed frame and the tube seat connecting plate on fuel assembly realize horizontal fixed through fourth screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023167561.0U CN215789247U (en) | 2020-12-25 | 2020-12-25 | Tool clamp for connecting plate of pipe seat on fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023167561.0U CN215789247U (en) | 2020-12-25 | 2020-12-25 | Tool clamp for connecting plate of pipe seat on fuel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215789247U true CN215789247U (en) | 2022-02-11 |
Family
ID=80124996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023167561.0U Active CN215789247U (en) | 2020-12-25 | 2020-12-25 | Tool clamp for connecting plate of pipe seat on fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215789247U (en) |
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2020
- 2020-12-25 CN CN202023167561.0U patent/CN215789247U/en active Active
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