Nuclear fuel element structural part end face groove machining tool

Abstract

The utility model belongs to the technical field of nuclear fuel element manufacturing, and particularly relates to a nuclear fuel element structural part end face groove machining tool. The blade is clamped on the cutter handle, and a cutter handle inner cooling hole is designed in the cutter handle. And the matched part of the knife handle and the blade is designed into a water-drop-shaped structure. The blade is fixed by a fastening screw, and the fastening screw is installed in the blade fixing screw hole. A multi-angle planar blade receding structure is designed on the side face of the blade according to the arc size of a plurality of grooves of a part. An arc through groove is formed in the blade and connected into the cutter handle to form a blade cooling channel. The cutter handle is provided with a cutter handle fixing plane. A blade assembly hole is designed in the installation position of the blade. The end face deep groove which cannot be machined by a standard cutter is achieved through the cutter handle fixing plane structure, deep grooves with different diameters can be machined by one cutter, the cooling effect is improved, the machining efficiency and the machining precision can be greatly improved through machining verification, and the machining technical requirements of parts are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to nuclear fuel element manufacturing technical field, concretely relates to a nuclear fuel element structural part end face groove processing tool. BACKGROUND

[0002] A research test reactor nuclear fuel element adopts a tube type structure, and the element fuel is a circular tube type structure, wherein the end face of one structural part is a deep groove structure, and the part is mainly used for fixing and connecting element tubes of each layer. In the assembly process of the assembly, the element tubes are fixed and connected mainly through the deep groove structure of the end face of the part, and the depth and width size machining precision of the deep grooves of each layer in the part directly affect the assembly precision of the whole element. The end face deep groove machining of the structural part has always been a difficulty in the machining process. In the early stage, ordinary lathes are used for manual machining, and there are problems such as low efficiency and low machining precision. There is no standard tool for the end face deep groove machining of the structural part on the market. SUMMARY

[0003] The utility model discloses a nuclear fuel element structural part end face groove processing tool, realize the end face deep groove of this structural part on numerical control lathe and improve the machining efficiency and precision, solve the end face deep groove machining difficulty of this structural part, make the end face deep groove machining of this structural part realize numerical control.

[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0005] A nuclear fuel element structural part end face groove processing tool, the blade is clamped on the handle, and the handle is internally designed with a handle internal cooling hole.

[0006] The matching part of the handle and the blade is designed as a water drop shape structure.

[0007] The blade is fixed by a fastening screw, and the fastening screw is installed in the blade fixing screw hole.

[0008] The cutting edge width of the blade is 1.5 mm.

[0009] The blade side surface is designed with a multi-angle plane blade clearance structure according to the arc size of the plurality of grooves of the part.

[0010] An arc through groove is opened on the blade and connected to the handle interior as a blade cooling channel.

[0011] The handle is designed with a handle fixing plane.

[0012] The mounting position of the blade is designed with a blade assembly hole.

[0013] The maximum cutting depth of the blade is 34 mm.

[0014] The utility model has the beneficial effects that:

[0015] The utility model discloses a structure of the fixed plane of the tool holder realizes the end face deep groove that standard tool cannot process, and can process the deep groove of different diameters with one tool, and improves the cooling effect, and can greatly improve the processing efficiency and processing accuracy through the processing verification, satisfies the processing technical requirement of part. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure part schematic view;

[0017] Figure 2 Machine tool processing schematic view;

[0018] Figure 3 Processing tool assembly schematic view;

[0019] Figure 4 Tool holder schematic view;

[0020] Figure 5 Insert schematic view;

[0021] In the drawing: 1, numerical control lathe;2, tool turret;3, processing tool;4, structure part;5, chuck;6, tool holder;7, fastening screw;8, insert;9, tool holder fixed plane;10, tool holder inner cooling hole;11, insert fixed screw hole;12, insert assembly hole;13, insert cooling channel;14, insert clearance structure;15, insert assembly handle;16, cutting edge. DETAILED DESCRIPTION

[0022] The utility model will be described in detail below in combination with the drawings and specific embodiment.

[0023] The cooperation part of tool holder 6 and insert 8 is designed as a water drop structure, which can prevent tool rotation, position the insert, and quickly clamp the tool. The insert 8 is fixed by fastening screw 7, and an arc slot is opened on the insert 8, which is connected to the inside of tool holder 6, so that the cooling liquid can be accurately sprayed to the cutting edge, playing a better cooling and lubricating effect. The cutting edge width of insert 8 is designed as 1.5mm according to the size of the part, and the maximum cutting depth can reach 34mm. The side surface of insert 8 is designed as a multi-angle plane according to the arc size of multiple grooves of the part, and the insert clearance structure 14 is designed as a multi-angle plane to ensure that the part arc does not interfere, and the thickness is retained as much as possible to improve the strength of the tool.

[0024] The utility model is used for processing end face deep groove structure of nuclear fuel element structural part, can use 1 knife on numerical control lathe to realize multiple size end face deep groove structure processing. Numerical control lathe 1 is the machine tool equipment of processing structural part 4, can realize numerical control processing according to programming. Tool turret 2 is a component part of numerical control lathe 1, is used for installing processing tool 3. Processing tool 3 realizes processing structural part 4 end face deep groove structure. Structural part 4 is the part to be processed. Chuck 5 is used for accurately clamping structural part 4.

[0025] Handle 6 is the component part of processing tool 3, blade 8 is clamped on handle 6, is designed with handle internal cooling hole 10 structure inside, can cooperate with the internal cooling liquid system of numerical control lathe, makes cooling liquid spray to blade 8 cutting position through handle internal cooling hole 10, carries out cooling and lubrication to blade 8, reduces the risk of cutting force reduction broken knife. Blade 8 is installed into handle 6, adopts fastening screw 7 to be fixed and prevented from loosening. Blade 8 is the cutting part of tool. Handle 6 is designed with handle fixed plane 9, can be quickly clamped and positioned on numerical control lathe 1, improves clamping efficiency. Handle internal cooling hole 10 can cooperate with the internal cooling liquid system of numerical control lathe, makes cooling liquid spray to blade 8 cutting position through handle internal cooling hole 10, carries out cooling and lubrication to blade 8, reduces the risk of cutting force reduction broken knife. Blade fixed screw hole 11 installs fastening screw 7, blade 8 is installed into handle 6, adopts fastening screw 7 to be fixed and prevented from loosening. Blade assembly hole 12 is the position of installing blade 8, the cooperation part of handle 6 and blade 8 is designed into water drop shape structure, can prevent tool rotation, plays the role of positioning blade 8 position, can quickly clamp tool. Blade 8 is fixed by fastening screw 7, is opened on a circular arc through slot on blade 8 and is connected to handle interior as blade cooling channel 13, makes cooling liquid be able to accurately spray to blade edge, plays better cooling lubrication effect. The side surface of blade 8 is designed into multi-angle plane according to the circular arc size of multiple grooves of the part, tool avoidance structure 14 is designed into multi-angle plane, ensures not to interfere with the part circular arc, and as far as possible retains thickness and improves the strength of tool. The cooperation part of handle 6 and blade 8 is designed into water drop shape structure as blade assembly handle 15, can prevent tool rotation, plays the role of positioning blade 8 position, can quickly clamp tool. The width of cutting edge 16 of blade 8 is designed into 1.5mm according to the size of part, and the maximum cutting depth can reach 34mm. Possesses the end face groove of all specifications of structural part.

[0026] Structural part processing operation process:

[0027] First step: on numerical control lathe 1, according to the appearance size of structural part 4, the soft jaw is turned, structural part 4 is clamped on the soft jaw of numerical control lathe 1, avoids stress deformation.

[0028] Second step: the shaped processing tool 3 blade 8 is installed on the tool holder 6, the blade 8 is fixed by using the fastening screw 7, the non-standard processing tool 3 is installed on the tool tower 2 of the numerical control lathe 1 by using the water drop-shaped structure to position, the tool holder 6 is positioned by using the tool holder fixing plane 9, the cutting direction of the blade 8 is ensured, and the tool holder 6 is prevented from rotating in the tool holder.

[0029] Third step: the tool 3 blade 8 is used to perform tool setting on the end face of the structural part, the program is compiled to perform turning on the end face groove, the tool is internally cooled, the cooling liquid is sprayed at the cutting edge 16 through the tool holder internal cooling hole 10 and the blade cooling channel 13, the cooling effect is improved, and the tool breakage is prevented.

[0030] Fourth step: the end face groove of the structural part 4 is processed layer by layer from the outside to the inside, the workpiece stiffness performance is relatively good when the outer groove is processed, the cutting force is large, and according to the cutting sequence, the machining precision of the workpiece is beneficial to guarantee.

[0031] Fifth step: after the machining is completed, the tool is withdrawn, the workpiece is disassembled for detection, and the next machining is sequentially performed.

Claims

1. A nuclear fuel element structure end face groove machining tool characterized by: The blade is clamped on the shank, and the shank is internally designed with a shank inner cooling hole; the cutting edge width of the blade is 1.5 mm; the blade side surface is designed with a multi-angle plane blade avoidance structure according to the arc size of multiple grooves of the part; and the maximum cutting depth of the blade is 34 mm.

2. The nuclear fuel element structure end face groove machining tool according to claim 1, characterized by: The blade is fixed by a fastening screw, and the fastening screw is installed in the blade fixing screw hole.

3. The nuclear fuel element structure end face groove machining tool according to claim 1, characterized by: An arc through groove is opened on the blade and connected to the shank inner cooling channel.

4. The nuclear fuel element structure end face groove machining tool according to claim 1, characterized by: The shank is designed with a shank fixing plane.

5. The nuclear fuel element structure end face groove machining tool according to claim 1, characterized by: The mounting position of the blade is designed with a blade assembly hole.

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