Embedded part milling equipment in nuclear power construction and milling operation method thereof

Abstract

The invention discloses embedded part milling equipment in nuclear power construction and a milling operation method thereof. The milling equipment is used for milling the upper surfaces of a group of embedded parts, so that the upper surfaces of the group of embedded parts are positioned on the same horizontal plane; the milling equipment comprises a supporting assembly, a milling cutter and a milling driving assembly, the milling cutter is mounted on the supporting assembly through the milling driving assembly, and the supporting assembly is used for driving the milling driving assembly and the milling cutter to linearly move in the X-axis direction, the Y-axis direction and the Z-axis direction, so that the milling cutter can move to the position over the to-be-milled embedded part; the milling cutter is located at the bottom of the milling driving assembly. The axis of the milling cutter is arranged in the vertical direction. The milling driving assembly is used for driving the milling cutter to rotate around the Z-axis direction and is matched with the linear motion, provided by the supporting assembly, of the milling cutter in the Z-axis direction to serve as milling feeding of the milling cutter, and milling of the upper surface of the to-be-milled embedded part is achieved; through cooperation of the supporting assembly and the milling driving assembly, milling of the upper surfaces of all the embedded parts in the set of embedded parts is finally achieved, and the upper surfaces of all the embedded parts in the set of embedded parts are located on the same horizontal plane; the device can realize the characteristics of simple installation, convenient operation, high machining precision, high construction efficiency and the like, and effectively improves the milling implementation efficiency of the embedded part on the construction site.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power construction, and in particular relates to an embedded part milling device and a milling method thereof in nuclear power construction. Background Art

[0002] At present, T-shaped embedded parts are widely used in nuclear power construction. They are mainly used to install control equipment. Therefore, there are specific flatness requirements for the surface of embedded parts to ensure the quality of later control equipment installation. Generally, the surface of embedded parts is ground by manual grinding and polishing. However, for embedded parts of several thousand meters in the nuclear island, the original manual grinding is not enough to efficiently meet the on-site requirements. There is an urgent need for an efficient, simple, flexible and applicable surface treatment equipment for on-site installation requirements. Summary of the invention

[0003] In view of this, the present invention provides a milling device and a milling method for embedded parts in nuclear power construction, which can achieve the characteristics of simple installation, convenient operation, high processing precision, and high construction efficiency, and effectively improve the milling implementation efficiency of embedded parts on the construction site.

[0004] The present invention is achieved through the following technical solutions:

[0005] A milling device for embedded parts in nuclear power construction, the milling device is used to mill the upper surface of a group of embedded parts so that the upper surfaces of the group of embedded parts are located on the same horizontal plane; wherein a group of embedded parts is composed of a plurality of embedded parts arranged in a straight line;

[0006] The milling equipment includes: a support assembly, a milling cutter, a milling drive assembly and a control unit;

[0007] Let the arrangement direction of a group of embedded parts on the horizontal plane be the X-axis direction, the direction perpendicular to the X-axis on the horizontal plane be the Y-axis direction, and the vertical direction be the Z-axis direction;

[0008] The milling cutter is installed on the support assembly through the milling drive assembly, and the support assembly is used to drive the milling drive assembly and the milling cutter to perform linear motion along the X-axis, Y-axis and Z-axis directions, so that the milling cutter can move to the top of the embedded part to be milled;

[0009] The milling cutter is located at the bottom of the milling drive assembly, and the axis of the milling cutter is arranged in the vertical direction; the milling drive assembly is used to drive the milling cutter to rotate around the Z-axis direction, and cooperates with the linear motion of the milling cutter driven by the support assembly along the Z-axis direction as the milling feed of the milling cutter to realize the milling of the upper surface of the embedded part to be milled; through the cooperation of the support assembly and the milling drive assembly, the milling of the upper surfaces of all embedded parts in the group of embedded parts is finally realized, so that the upper surfaces of all embedded parts in the group of embedded parts are located on the same horizontal plane;

[0010] The control unit is used to control the operation of the supporting assembly and the milling drive assembly.

[0011] Furthermore, it also includes: a measuring unit and an iron filings collecting device;

[0012] The measuring unit is used to measure the surface dimension data of the embedded part, and complete the data collection, analysis and display of the surface dimension data of the embedded part during the processing, and prompt the completion of the processing of the embedded part after the processing is completed;

[0013] The iron chip collecting device is used in the process of processing embedded parts to limit the splashing of iron chips and collect the iron chips cut off and store them in a collection box.

[0014] Further, the support assembly includes: an X-direction support beam, a Y-direction support beam and a Z-direction mounting plate;

[0015] The X-direction support beam is provided with an X-direction guide rail along its length direction; the Y-direction support beam is provided with a Y-direction guide rail along its length direction;

[0016] Two mutually parallel X-direction support beams are both arranged along the X-axis direction, the Y-direction support beam is installed on the two X-direction support beams, and the Y-direction support beam is arranged along the Y-axis direction, and the two ends of the Y-direction support beam are respectively slidably matched with the X-direction guide rails on the two X-direction support beams, so that the Y-direction support beam can perform linear motion along the length direction of the X-direction guide rail;

[0017] The Z-direction mounting plate is mounted on the Y-direction support beam and slidably cooperates with the Y-direction guide rail on the Y-direction support beam, so that the Z-direction mounting plate can perform linear motion along the length direction of the Y-direction guide rail;

[0018] The Z-direction mounting plate is provided with a Z-guide rail, which is arranged along the Z-axis direction; the milling drive assembly is installed on the Z-guide rail of the Z-direction mounting plate and slidably cooperates with the Z-guide rail, so that the milling drive assembly can perform linear motion along the length direction of the Z-guide rail.

[0019] Furthermore, an X-axis rack is fixed on the X-axis support beam along its length direction; an X-axis servo motor is installed at each end of the Y-axis support beam, and the output shaft of each X-axis servo motor is connected to a transmission gear; the two transmission gears are respectively engaged with the X-axis racks on the two X-axis support beams; the control unit drives the Y-axis support beam to move linearly along the X-axis guide rail by controlling the rotation of the X-axis servo motor, that is, drives the milling cutter to move longitudinally along the X-axis guide rail;

[0020] A Y-axis rack is fixed on the Y-axis support beam along its length direction; a Y-axis servo motor is installed on the Z-axis mounting plate, and the output shaft of the Y-axis servo motor is connected to a transmission gear; the transmission gear is meshed with the Y-axis rack on the Y-axis support beam; the control unit drives the Z-axis mounting plate to move linearly along the Y-axis guide rail by controlling the rotation of the Y-axis servo motor, that is, drives the milling cutter to move horizontally along the Y-axis guide rail;

[0021] A Z-direction servo motor and a lead screw pair arranged along the Z-axis direction are installed on the Z-direction mounting plate; the lead screw portion of the lead screw pair is connected to the output shaft of the Z-direction servo motor; the nut portion of the lead screw pair is connected to the milling drive assembly; the control unit drives the lead screw pair to work by controlling the rotation of the Z-direction servo motor, thereby driving the milling drive assembly to move linearly along the Z-direction guide rail, that is, driving the milling cutter to move up and down along the Z-direction guide rail.

[0022] Furthermore, the X-direction support beam adopts a standardized module, which can realize the combined splicing of multiple X-direction support beams; and the bottom of each X-direction support beam adopts an adjusting bolt to adjust the flatness of the Y-direction support beam and the X-direction guide rail, and is fixed to the ground through a fixed anchor hole.

[0023] Furthermore, the control unit includes: a control box and a core controller, a programmable controller, an input / output module and a power module concentrated in the control box; the core controller is used to control the operation of the X-direction servo motor, the Y-direction servo motor and the Z-direction servo motor; the programmable controller is used to provide control instructions to the core controller, so that the core controller controls the operation of the X-direction servo motor, the Y-direction servo motor and the Z-direction servo motor according to the control instructions; the input / output module is used to realize signal transmission between the programmable controller and the core controller and signal transmission between the core controller and the control of the X-direction servo motor, the Y-direction servo motor and the Z-direction servo motor; the power module is used to supply power to the core controller and the programmable controller.

[0024] Further, the measuring unit includes a laser ranging sensor and a data acquisition device;

[0025] A group of laser distance measuring sensors are installed on the Z guide rail. Multiple groups of data of embedded parts at a certain distance are measured by a group of laser distance measuring sensors. The data acquisition device collects and stores each group of data. The difference and target value of each measuring point are analyzed by the built-in measurement / analysis program of the data acquisition device.

[0026] The iron chip collecting device comprises a splash plate, a collecting roller and a collecting box;

[0027] The splash plate is a semi-enclosed splash plate, which is arranged around the milling cutter. The splash plate is used to limit the splashing range of iron chips after cutting by the milling cutter. The collecting roller is used to collect the iron chips and store them in a collecting box.

[0028] Furthermore, the milling drive assembly uses hydraulic pressure to drive the milling cutter to rotate, or uses a motor to drive the milling cutter to rotate;

[0029] When the milling drive assembly adopts hydraulic drive to rotate the milling cutter, the milling drive assembly includes: a rotating motor and a reducer; the rotating motor is connected to the milling cutter through the reducer, and the rotating motor is used to drive the reducer to output power to the milling cutter, drive the milling cutter to rotate, and realize the rotating milling action of the milling cutter;

[0030] When the milling drive assembly adopts a motor to drive the milling cutter to rotate, the milling drive assembly includes: a hydraulic motor, a reducer, a hydraulic pump station and a reversing valve; the hydraulic motor is connected to the milling cutter through the reducer, and the hydraulic motor is used to drive the reducer to output power to the milling cutter, drive the milling cutter to rotate, and realize the rotational milling action of the milling cutter; the control unit realizes the speed control of the milling cutter by controlling the speed of the hydraulic motor;

[0031] The hydraulic pump station is connected to the hydraulic motor through an oil pipe, and the hydraulic oil in the hydraulic pump station is input into the hydraulic motor through the oil pipe. The operation of the hydraulic motor drives the milling cutter to rotate; wherein, the reversing valve is installed on the oil pipe, and the control unit controls the rotation direction of the milling cutter by controlling the direction of the reversing valve.

[0032] Furthermore, the milling device also includes a display unit, which includes a display screen and physical buttons.

[0033] A method for milling embedded parts in nuclear power construction, the steps of the method are as follows:

[0034] Step 1: Install multiple sections of X-direction support beams in sequence along the arrangement direction of a group of embedded parts, and level all X-direction support beams after installation;

[0035] Step 2: Perform a walking test on the milling equipment. During the walking test, the machine is stopped at both ends and the middle of each X-axis support beam as required to check the surface flatness of the X-axis support beam again.

[0036] Step 3: The measuring unit measures the upper surface height of all embedded parts, marks the highest and lowest points and the target value, and takes the target value as the processing target to carry out the milling operation;

[0037] Step 4: Select the highest embedded part, adjust the position of the milling cutter through the support assembly, and set the initial milling dimensions, which include: milling feed, milling length, and milling times;

[0038] Step 5: After the embedded parts are milled, the measuring unit measures the embedded parts and displays the measurement data; at the same time, after each embedded part is milled, the measuring unit compares the data and displays the measurement difference to ensure that the embedded parts in the same group are within the same value range;

[0039] Step 6: Repeat steps 4 and 5 until all embedded parts in the same group have been milled, and then measure and verify the upper surface height of all embedded parts in the same group to ensure that the surface flatness of all embedded parts is within the required range.

[0040] Beneficial effects:

[0041] (1) The present invention is mainly used as a surface treatment equipment for T-shaped embedded parts in the construction of nuclear islands in nuclear power construction to ensure that the surface of the embedded parts meets specific flatness requirements. The milling equipment of the present invention processes the surface of the embedded parts by horizontal milling, and ensures that various specific operating spaces can be coped with during the milling process through multi-axis collaborative work; the equipment adopts standardized, modular, and digital design to achieve simple installation, convenient operation, high processing accuracy, and high construction efficiency, effectively improving the milling implementation efficiency of embedded parts at the construction site; in addition, the milling equipment of the present invention has a simple structural design, strong functionality, convenient processing and manufacturing, and low cost; after installation and debugging at the construction site, the embedded parts can be milled, and the surface accuracy of the processed embedded parts can be controlled. Compared with manual grinding or existing grinding equipment, it effectively improves the construction efficiency and has broad market application prospects.

[0042] (2) The support assembly of the present invention comprises an X-direction support beam, a Y-direction support beam and a Z-direction mounting plate. The X-direction support beam is provided with an X-direction guide rail along its length direction, and the Z-direction mounting plate is provided with a Z-direction guide rail; the Y-direction support beam is provided with a Y-direction guide rail along its length direction; the two support beams serve as guide rail installation bases respectively, the X-direction being the main running direction of the equipment and being consistent with the arrangement direction of the embedded parts, thereby realizing the longitudinal movement of the milling cutter; the Y-direction being placed transversely to the X-direction, thereby ensuring the transverse movement of the milling cutter; the Z-direction being the feed control of the milling cutter, thereby realizing the vertical movement of the milling cutter, namely, the control of the processing feed amount; therefore, the support assembly of the present invention adopts a straddling frame structure, thereby realizing the free movement of the milling cutter in space, thereby ensuring arbitrary adjustment during the surface processing of the embedded parts.

[0043] (3) The control unit of the present invention drives the Y-direction support beam to move linearly along the X-direction guide rail by controlling the rotation of the X-direction servo motor, that is, drives the milling cutter to move longitudinally along the X-direction guide rail; the control unit drives the Z-direction mounting plate to move linearly along the Y-direction guide rail by controlling the rotation of the Y-direction servo motor, that is, drives the milling cutter to move laterally along the Y-direction guide rail; the control unit drives the lead screw pair to work by controlling the rotation of the Z-direction servo motor, and then drives the milling drive assembly to move linearly along the Z-direction guide rail, that is, drives the milling cutter to move up and down along the Z-direction guide rail; therefore, the present invention realizes the operation power output in the three directions of X, Y and Z by adopting the servo motor to execute, thereby ensuring the accuracy of the operation amount.

[0044] (4) The X-axis support beam of the present invention adopts a standardized design, and multiple support beams can be combined and spliced ​​to serve as the basis of the entire equipment. In order to ensure the installation accuracy of the entire equipment, adjustment bolts are set at the bottom of each section of the X-axis support beam to effectively adjust the horizontal accuracy of the X-axis support beam. At the same time, the X-axis support beam is used as a fixing device, and a fixing anchor hole connected to the ground is set at the bottom of the X-axis support beam to ensure that the entire equipment will not have horizontal displacement or up and down jumping during operation.

[0045] (5) The equipment of the present invention adopts full digital control, that is, the operation of three servo motors is controlled by a control unit, thereby realizing the control of the longitudinal, lateral and vertical movement of the milling cutter, which can effectively improve the control accuracy; at the same time, the optimized control program can be measured on site and the corresponding parameters can be input through a programmable controller to realize full automatic control, eliminating tedious manual operations.

[0046] (6) The milling device of the present invention further includes a measuring unit, which realizes the detection, data storage, analysis and feed rate adjustment functions of the milling device during the processing of the embedded parts through a laser distance measuring sensor arranged on the Y-axis crossbeam;

[0047] The milling equipment of the present invention also includes an iron chip collecting device, which limits the splashing of iron chips by a semi-enclosed splash-proof plate arranged around the milling cutter. The iron chips cut by the iron chip collecting device are collected and stored in a collection box for subsequent cleaning and recycling.

[0048] (7) The milling drive assembly of the present invention can use hydraulics to drive the milling cutter to rotate, or use an electric motor to drive the milling cutter to rotate; when hydraulics are used to drive the milling cutter to rotate, a hydraulic pump station is used to drive a hydraulic motor to drive the milling cutter to rotate, thereby realizing milling processing; when an electric motor is used to drive, the milling drive assembly includes a rotating motor and a reducer, and the rotating motor drives the reducer to drive the milling cutter to rotate, thereby realizing milling processing; both methods are simple to operate and controllable.

[0049] (8) The milling device of the present invention also includes a display unit, which includes a display screen and physical buttons, and can realize functions such as display, switching, data input, and output of all data of the device, and concentrate the start, stop, emergency stop and other functions of the device on the display unit, making the operation more intuitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a structural composition diagram of the milling equipment of the present invention;

[0051] Figure 2 The figure is a schematic diagram of the assembly of the milling cutter and the milling drive assembly;

[0052] Figure 3 It is a schematic diagram of the structure of the adjustment bolts and fixing anchor holes of the X-axis support beam;

[0053] Figure 4 It is a schematic diagram of the installation of the Y-axis support beam and the X-axis support beam;

[0054] Figure 5 This is the installation diagram of the hydraulic pump station and the reversing valve;

[0055] Figure 6 It is a schematic diagram of the structure of the control unit and the display unit;

[0056] Figure 7 It is a schematic diagram of the structure of the measurement unit module;

[0057] Figure 8 This is a schematic diagram of the structure of the iron chip collection device;

[0058] Fig. 9 It is a schematic diagram of the splash plate structure;

[0059] Among them, 1-X-direction support beam, 2-Y-direction support beam, 3-Z-direction mounting plate, 4-milling cutter, 5-milling drive assembly, 6-control unit, 7-display unit;

[0060] A1-X guide rail, A2-X rack, A3-adjusting bolt, A4-fixing anchor hole;

[0061] B1-Y guide rail, B2-Y rack, B3-X servo motor, B5-connecting plate, B6-sliding trolley, B7-Y slider;

[0062] C1-Z-guide rail, C2-screw pair, C3-Y-servo motor, C4-Z-servo motor;

[0063] D1-hydraulic motor, D2-reducer;

[0064] E1-hydraulic pump station, E2-reversing valve;

[0065] F1-display screen, F2-physical button;

[0066] G1-laser distance sensor, G2-sensor support frame;

[0067] H1-splash plate, H1-1 support frame, H1-2 rubber enclosure, H2-collection roller, H2-1 connecting bracket, H3-collection box. DETAILED DESCRIPTION

[0068] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0069] Embodiment 1:

[0070] This embodiment provides an embedded parts milling equipment in nuclear power construction, which is used to mill the upper surface of a group of embedded parts so that the upper surfaces of the group of embedded parts are located on the same horizontal plane; wherein a group of embedded parts is composed of a plurality of embedded parts arranged in a straight line;

[0071] See attached Figure 1 , the milling equipment includes: a support assembly, a milling cutter 4, a milling drive assembly 5 and a control unit 6;

[0072] Let the arrangement direction of a group of embedded parts on the horizontal plane (that is, the direction of a straight line formed by several embedded parts) be the X-axis direction, the direction perpendicular to the X-axis on the horizontal plane be the Y-axis direction, and the vertical direction be the Z-axis direction;

[0073] The milling cutter 4 is installed on the support assembly through the milling drive assembly 5, and the support assembly is used to drive the milling drive assembly 5 and the milling cutter 4 to perform linear motion along the X-axis, Y-axis and Z-axis directions, so that the milling cutter 4 can move to the top of the embedded part to be milled in a group of embedded parts;

[0074] The milling cutter 4 is located at the bottom of the milling drive assembly 5, and the axis of the milling cutter 4 is arranged in the vertical direction; the milling drive assembly 5 is used to drive the milling cutter 4 to rotate around the Z-axis direction, and cooperates with the linear motion of the milling cutter 4 along the Z-axis direction provided by the support assembly as the milling feed of the milling cutter 4 to realize the milling of the upper surface of the embedded part to be milled; through the cooperation of the support assembly and the milling drive assembly 5, the milling of the upper surfaces of all embedded parts in the group of embedded parts is finally realized, so that the upper surfaces of all embedded parts in the group of embedded parts are located on the same horizontal plane;

[0075] The control unit 6 is used to control the operation of the supporting assembly and the milling drive assembly 5 .

[0076] In this embodiment, the support assembly includes: an X-direction support beam 1, a Y-direction support beam 2 and a Z-direction mounting plate 3;

[0077] The X-direction support beam 1 is fixed with an X-direction guide rail A1 along its length direction by bolts; the Y-direction support beam 2 is fixed with a Y-direction guide rail B1 along its length direction by bolts;

[0078] Two mutually parallel X-direction support beams 1 are both arranged along the X-axis direction, the Y-direction support beam 2 is installed on the two X-direction support beams 1, and the Y-direction support beam 2 is arranged along the Y-axis direction, and the two ends of the Y-direction support beam 2 are respectively slidably matched with the X-direction guide rails A1 on the two X-direction support beams 1, so that the Y-direction support beam 2 can perform linear motion along the length direction of the X-direction guide rail A1;

[0079] The Z-direction mounting plate 3 is mounted on the Y-direction support beam 2 and slidably cooperates with the Y-direction guide rail B1 on the Y-direction support beam 2, so that the Z-direction mounting plate 3 can perform linear motion along the length direction of the Y-direction guide rail B1;

[0080] The Z-direction mounting plate 3 is fixed with a Z-direction guide rail C1 by bolts, and the Z-direction guide rail C1 is arranged along the Z-axis direction; the milling drive assembly 5 is installed on the Z-direction guide rail C1 of the Z-direction mounting plate 3, and is slidably matched with the Z-direction guide rail C1, so that the milling drive assembly 5 can perform linear motion along the length direction of the Z-direction guide rail C1;

[0081] In a preferred solution, an X-axis rack A2 is fixed to the X-axis support beam 1 along its length direction by bolts; an X-axis servo motor B3 is installed at each end of the Y-axis support beam 2, and the output shaft of each X-axis servo motor B3 is connected to a transmission gear; the two transmission gears are respectively meshed with the X-axis racks A2 on the two X-axis support beams 1; the control unit 6 drives the Y-axis support beam 2 to perform linear motion along the X-axis guide rail A1 by controlling the rotation of the X-axis servo motor B3, that is, drives the milling cutter 4 to perform longitudinal motion along the X-axis guide rail A1;

[0082] The Y-axis support beam 2 is fixed with a Y-axis rack B2 along its length direction by bolts; a Y-axis servo motor C3 is installed on the Z-axis mounting plate 3, and the output shaft of the Y-axis servo motor C3 is connected with a transmission gear; the transmission gear is meshed with the Y-axis rack B2 on the Y-axis support beam 2; the control unit 6 drives the Z-axis mounting plate 3 to move linearly along the Y-axis guide rail B1 by controlling the rotation of the Y-axis servo motor C3, that is, drives the milling cutter 4 to move horizontally along the Y-axis guide rail B1;

[0083] The Z-direction mounting plate 3 is provided with a Z-direction servo motor C4 and a lead screw pair C2 arranged along the Z-axis direction; the lead screw portion of the lead screw pair C2 is connected to the output shaft of the Z-direction servo motor C4; the nut portion of the lead screw pair C2 is connected to the milling drive assembly 5; the control unit 6 drives the lead screw pair C2 to work by controlling the rotation of the Z-direction servo motor C4, thereby driving the milling drive assembly 5 to perform linear motion along the Z-direction guide rail C1, that is, driving the milling cutter 4 to perform precise up and down motion along the Z-direction guide rail C1;

[0084] A better solution is that the X-direction support beam 1 adopts a standardized module, which can realize the combined splicing of multiple X-direction support beams 1; that is, multiple sections of X-direction support beams 1 are added at the end of each X-direction support beam 1 to achieve the extension of the length of the X-direction support beam 1;

[0085] For a better solution, see the attached Figure 3 The bottom of each X-direction support beam 1 uses an adjusting bolt A3 to adjust the flatness (i.e. horizontality) of the Y-direction support beam 2 and the X-direction guide rail A1, and is fixed to the ground through a fixing anchor hole A4;

[0086] In a preferred solution, the sliding cooperation between the Y-direction support beam 2 and the X-direction guide rail A1, the sliding cooperation between the Z-direction mounting plate 3 and the Y-direction guide rail B1, and the sliding cooperation between the milling drive assembly 5 and the Z-direction guide rail C1 all adopt the slider and guide rail connection method, see the attached Figure 4 , taking the specific connection relationship between the sliding cooperation between the Y-direction support beam 2 and the X-direction guide rail A1 as an example: connecting plates B5 are set at both ends of the Y-direction support beam 2, and the Y-direction support beam 2 is connected to the sliding trolley B6 through the connecting plates B5. A plurality of Y-direction sliders B7 are set at the bottom of the sliding trolley B6, and the Y-direction sliders B7 are slidably cooperated with the X-direction guide rail A1 to ensure that the Y-direction support beam 2 slides longitudinally along the X-direction guide rail A1.

[0087] The milling drive assembly 5 can use hydraulic pressure to drive the milling cutter 4 to rotate, or use a motor to drive the milling cutter 4 to rotate; when driven by a motor, the milling drive assembly 5 includes a rotating motor and a reducer, and the rotating motor is connected to the milling cutter 4 through the reducer. The rotating motor is used to drive the reducer to output power to the milling cutter 4, drive the milling cutter 4 to rotate, and realize the rotating milling action of the milling cutter 4;

[0088] In this embodiment, see the attached Figure 2 The milling drive assembly 5 is hydraulically driven. When the milling cutter 4 is driven by hydraulic pressure to rotate, the milling drive assembly 5 includes: a hydraulic motor D1, a reducer D2, a hydraulic pump station E1 and a reversing valve E2; the hydraulic motor D1 is connected to the milling cutter 4 through the reducer D2, and the hydraulic motor D1 is used to drive the reducer D2 to output power to the milling cutter 4, drive the milling cutter 4 to rotate, and realize the rotational milling action of the milling cutter 4; the control unit 6 controls the speed of the milling cutter 4 by controlling the speed of the hydraulic motor D1; see the attached Figure 5 The hydraulic pump station E1 is connected to the hydraulic motor D1 through an oil pipe, and the hydraulic oil in the hydraulic pump station E1 is input into the hydraulic motor D1 through the oil pipe. The hydraulic motor D1 drives the milling cutter 4 to rotate when it works; wherein the reversing valve E2 is installed on the oil pipe, and the control unit 6 controls the direction of rotation of the milling cutter 4 by controlling the direction of the reversing valve E2;

[0089] In this embodiment, see the attached Figure 6The control unit 6 includes: a control box and a core controller, a programmable controller, an input / output module and a power module concentrated in the control box; the core controller is used to control the operation of the X-direction servo motor B3, the Y-direction servo motor C3, the Z-direction servo motor C4, the hydraulic motor D1 and the reversing valve E2; the programmable controller is used to provide control instructions to the core controller, so that the core controller controls the operation of the X-direction servo motor B3, the Y-direction servo motor C3, the Z-direction servo motor C4, the hydraulic motor D1 and the reversing valve E2 according to the control instructions; the input / output module is used to realize signal transmission between the programmable controller and the core controller and signal transmission between the core controller and the control of the X-direction servo motor B3, the Y-direction servo motor C3, the Z-direction servo motor C4, the hydraulic motor D1 and the reversing valve E2; the power module is used to supply power to the core controller and the programmable controller.

[0090] In this embodiment, the milling device further includes a display unit 7, which includes a display screen F1 and a physical key F2, and can realize the input, output and display functions of all data.

[0091] In this embodiment, see the attached Figure 7 The milling equipment also includes a measuring unit, which includes a laser distance measuring sensor G1 and a data acquisition device; a group of laser distance measuring sensors G1 are installed on the Z guide rail through a sensor support frame G2, and a group of laser distance measuring sensors G1 are used to measure multiple groups of data of embedded parts at a certain distance. The data acquisition device collects and stores each group of data, and analyzes the difference and target value of each measuring point through the built-in measurement / analysis program of the data acquisition device, and outputs the data through the display screen F1.

[0092] In this embodiment, the measuring unit collects initial data before milling, collects process data during the milling process, and collects final data after the milling process. The display screen F1 can retrieve and display each process data.

[0093] In this embodiment, the measuring unit can automatically adjust the feed amount of the milling cutter each time according to the collected data during the milling process, thereby automatically completing the milling process.

[0094] In this embodiment, see the attached Figure 8 The milling equipment also includes an iron chip collecting device, which includes: a splash plate H1, a collecting roller H2 and a collecting box H3;

[0095] The splash guard H1 is a semi-enclosed splash guard, which is arranged around the milling cutter to limit the splash of iron chips during milling. The collecting roller H2 is installed on the rear side of the Z-guide rail C1 through the connecting bracket H2-1 to collect the cut iron chips and store them in the collecting box H3.

[0096] In this embodiment, as shown in the attached Fig. 9 As shown, the splash plate H1 of the iron chip collection device is composed of a support frame H1-1 and a rubber enclosure H1-2, and its main functions are to prevent iron chips from splashing, sort out the location where iron chips fall, and wipe off foreign matter on the surface of embedded parts.

[0097] The installation process of the milling equipment:

[0098] Arrange the two X-axis support beams 1 along the arrangement direction of the embedded parts. Place the two X-axis support beams 1 on both sides of a group of embedded parts to ensure that they are parallel to the group of embedded parts. Install the sliding trolley B6 on the X-axis support beam 1. Note that the Y-axis slider B7 at the bottom of the sliding trolley B6 must be completely aligned during installation to avoid slider strain. Place the Y-axis support beam 2 vertically on the sliding trolley B6 and fix it with bolts. When installing the Z-axis mounting plate 3, also pay attention to the alignment of the slider and the guide rail to ensure that all sliders are installed in place. The installation of the guide rail can be tested by horizontal sliding.

[0099] After the above components are installed, install the X-direction servo motor B3 at both ends of the Y-direction support beam 2 and install the Y-direction servo motor C3 on the Z-direction mounting plate 3; taking the X-direction servo motor B3 as an example, pay attention to the alignment of the transmission gear at the end of the X-direction servo motor B3 and the X-direction rack A2 of the X-direction support beam 1. According to the factory design, when the Y-direction support beam 2 completes moving to the limit position, the transmission gear and the X-direction rack A2 can be fully engaged and installed.

[0100] The milling drive assembly 5 and the milling cutter 4 are installed on the Z-direction mounting plate 3 and locked by bolts. During the installation process, a template should be laid at the position of the milling cutter 4 to prevent the cutter head of the milling cutter 4 from being accidentally damaged. In this embodiment, the milling drive assembly 5 adopts a hydraulic drive device, and the milling drive assembly 5 can also be driven by a motor. The milling drive assembly 5 is not limited to the above two types, and can mainly provide milling power to drive the milling cutter 4 (or the grinding device) to work. In this embodiment, the hydraulic pump station E1 of the milling drive assembly 5 is installed on the Y-direction support beam 2, or placed on the side of the milling device, and the power is output through the oil pipe;

[0101] Install the control unit 6 and the display unit 7, and install the control unit 6 and the display unit 7 on the Y-direction support beam 2 through a support frame.

[0102] After all the above-mentioned components are installed, multiple sections of X-direction support beams 1 are installed in sequence along the arrangement direction of the embedded parts. In this embodiment, only two X-direction support beams 1 are used, and multiple sections of X-direction support beams 1 can be added at the end of each X-direction support beam 1 to extend the length of the X-direction support beam 1. After the installation is completed, the X-direction support beam 1 is leveled, and the X-guide rail A1 on the X-direction support beam 1 is measured by a spirit level, a total station or an external level measuring device. The horizontal accuracy of the X-direction support beam 1 is adjusted by adjusting the adjusting bolts of each section of the X-direction support beam 1 to ensure that the measurement error within the full size range of the X-guide rail A1 does not exceed the set requirements. At the same time, holes are drilled in the ground at the anchor holes, embedded bolts are set, and they are connected and fixed to the anchor holes to achieve the fixation of the X-direction support beam 1.

[0103] After completing the above work, all X-axis support beams 1 are uniformly measured to ensure the flatness (i.e. horizontality) requirements, and then all anchor bolts are fixed. Then the milling equipment is tested for walking. During the walking test, the two ends and the middle part of the X-axis support beam 1 are stopped as required, and the surface flatness of the X-axis support beam 1 is tested again. If there is no problem, the milling equipment can be debugged, mainly testing the three-axis motion and the rotation of the milling cutter 4, the switching of various functions, and the feedback of input data. The test process must be kept away from embedded parts to avoid damage to embedded parts due to misoperation.

[0104] After completing the above installation and inspection, carry out the installation of the iron chip collection device, install the splash plate H1 on the housing of the reducer D2, connect the connecting device of the iron chip collection roller H2 to the Z guide rail C1, and put it into the collection box H3.

[0105] After completing the test and installing the iron chip collection device, embedded parts processing can be carried out.

[0106] Embodiment 2:

[0107] This embodiment provides a method for milling embedded parts in nuclear power construction based on embodiment 1. The steps of the method are as follows:

[0108] Step 1: Install multiple sections of X-direction support beams 1 in sequence along the arrangement direction of a group of embedded parts, and perform leveling on all X-direction support beams 1 after installation. In this embodiment, only two X-direction support beams 1 are used, and multiple sections of X-direction support beams 1 can be added at the end of each X-direction support beam 1 to extend the length of the X-direction support beam 1.

[0109] Step 2: Perform a walking test on the milling equipment. During the walking test, stop the machine at both ends and the middle of each X-axis support beam 1 as required, and check the surface flatness of the X-axis support beam 1 again. If there is no problem, the milling equipment can be debugged. During the test, the machine must be kept away from embedded parts to avoid damage to embedded parts due to misoperation.

[0110] Step 3: Measure the upper surface height of all embedded parts, start the laser distance sensor, and perform initial measurement of the embedded surface according to the preset program. The measuring distance is no more than 500mm. After completing a group of multiple embedded part measurements, the measurement data of each embedded part will be displayed and stored, and the relative difference (highest and lowest points) and the target value will be marked. Start the equipment, and the system will use the target value of this group of embedded parts as the processing target and carry out milling operations according to the set feed rate;

[0111] Step 4: The system selects the highest point of the embedded part according to the measurement data to start milling. The control system adjusts the position of the milling cutter 4 through the support assembly. The system sets the initial feed rate, milling length and number of milling times. The operator determines the set values. The equipment will perform milling according to the measurement point data and continue to measure during the milling process.

[0112] Step 5: Each time the milling size reaches the median value, that is, the median value of the maximum and minimum data in the initial measurement data of the same embedded part, the system will automatically stop the milling cutter rotation, start to measure the embedded part again, and display the measured data. The operator will decide whether to continue the subsequent processing to the target size and complete the processing of the embedded part;

[0113] Step 6. After each milling of an embedded part is completed, the system will stop the milling cutter and start to measure the embedded part as a whole. It will display and analyze whether the measurement data of this embedded part has any out-of-tolerance size, and compare it with the completed embedded part data to control the size range of the embedded part after processing.

[0114] Step 7: Repeat steps 4 to 6 until all embedded parts in the same group have completed milling. The system will then display all data and save them.

[0115] Step 8. During the operation of the milling equipment, the chip collecting device moves along with the Y-axis support beam and collects the chips after cutting to keep the on-site environment clean and tidy.

[0116] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A milling equipment for embedded parts in nuclear power construction, characterized in that: The milling device is used to mill the upper surface of a group of embedded parts so that the upper surfaces of the group of embedded parts are located on the same horizontal plane; wherein a group of embedded parts is composed of a plurality of embedded parts arranged in a straight line; The milling equipment includes: a support assembly, a milling cutter, a milling drive assembly and a control unit; Let the arrangement direction of a group of embedded parts on the horizontal plane be the X-axis direction, the direction perpendicular to the X-axis on the horizontal plane be the Y-axis direction, and the vertical direction be the Z-axis direction; The milling cutter is installed on the support assembly through the milling drive assembly, and the support assembly is used to drive the milling drive assembly and the milling cutter to perform linear motion along the X-axis, Y-axis and Z-axis directions, so that the milling cutter can move to the top of the embedded part to be milled; The milling cutter is located at the bottom of the milling drive assembly, and the axis of the milling cutter is arranged in the vertical direction; the milling drive assembly is used to drive the milling cutter to rotate around the Z-axis direction, and cooperates with the linear motion of the milling cutter driven by the support assembly along the Z-axis direction as the milling feed of the milling cutter to realize the milling of the upper surface of the embedded part to be milled; through the cooperation of the support assembly and the milling drive assembly, the milling of the upper surfaces of all embedded parts in the group of embedded parts is finally realized, so that the upper surfaces of all embedded parts in the group of embedded parts are located on the same horizontal plane; The control unit is used to control the operation of the supporting assembly and the milling drive assembly.

2. The embedded parts milling equipment in nuclear power construction as claimed in claim 1, characterized in that: It also includes: a measuring unit and an iron filings collecting device; The measuring unit is used to measure the surface dimension data of the embedded part, and complete the data collection, analysis and display of the surface dimension data of the embedded part during the processing, and prompt the completion of the processing of the embedded part after the processing is completed; The iron chip collecting device is used in the process of processing embedded parts to limit the splashing of iron chips and collect the iron chips cut off and store them in a collection box.

3. The embedded parts milling equipment in nuclear power construction as claimed in claim 2, characterized in that: The support assembly includes: an X-direction support beam, a Y-direction support beam and a Z-direction mounting plate; The X-direction support beam is provided with an X-direction guide rail along its length direction; the Y-direction support beam is provided with a Y-direction guide rail along its length direction; Two mutually parallel X-direction support beams are both arranged along the X-axis direction, the Y-direction support beam is installed on the two X-direction support beams, and the Y-direction support beam is arranged along the Y-axis direction, and the two ends of the Y-direction support beam are respectively slidably matched with the X-direction guide rails on the two X-direction support beams, so that the Y-direction support beam can perform linear motion along the length direction of the X-direction guide rail; The Z-direction mounting plate is mounted on the Y-direction support beam and slidably cooperates with the Y-direction guide rail on the Y-direction support beam, so that the Z-direction mounting plate can perform linear motion along the length direction of the Y-direction guide rail; The Z-direction mounting plate is provided with a Z-guide rail, which is arranged along the Z-axis direction; the milling drive assembly is installed on the Z-guide rail of the Z-direction mounting plate and slidably cooperates with the Z-guide rail, so that the milling drive assembly can perform linear motion along the length direction of the Z-guide rail.

4. The embedded parts milling equipment in nuclear power construction as claimed in claim 3, characterized in that: An X-axis rack is fixed on the X-axis support beam along its length direction; an X-axis servo motor is installed at each end of the Y-axis support beam, and the output shaft of each X-axis servo motor is connected to a transmission gear; the two transmission gears are respectively meshed with the X-axis racks on the two X-axis support beams; the control unit drives the Y-axis support beam to move linearly along the X-axis guide rail by controlling the rotation of the X-axis servo motor, that is, drives the milling cutter to move longitudinally along the X-axis guide rail; A Y-axis rack is fixed on the Y-axis support beam along its length direction; a Y-axis servo motor is installed on the Z-axis mounting plate, and the output shaft of the Y-axis servo motor is connected to a transmission gear; the transmission gear is meshed with the Y-axis rack on the Y-axis support beam; the control unit drives the Z-axis mounting plate to move linearly along the Y-axis guide rail by controlling the rotation of the Y-axis servo motor, that is, drives the milling cutter to move horizontally along the Y-axis guide rail; A Z-direction servo motor and a lead screw pair arranged along the Z-axis direction are installed on the Z-direction mounting plate; the lead screw portion of the lead screw pair is connected to the output shaft of the Z-direction servo motor; the nut portion of the lead screw pair is connected to the milling drive assembly; the control unit drives the lead screw pair to work by controlling the rotation of the Z-direction servo motor, thereby driving the milling drive assembly to move linearly along the Z-direction guide rail, that is, driving the milling cutter to move up and down along the Z-direction guide rail.

5. The embedded parts milling equipment in nuclear power construction as claimed in claim 3, characterized in that: The X-direction support beam adopts a standardized module, and multiple X-direction support beams can be combined and spliced; and the bottom of each X-direction support beam adopts an adjusting bolt to adjust the flatness of the Y-direction support beam and the X-direction guide rail, and is fixed to the ground through a fixing anchor hole.

6. The embedded parts milling equipment in nuclear power construction as claimed in claim 4, characterized in that: The control unit comprises: a control box and a core controller, a programmable controller, an input / output module and a power module which are centrally located in the control box; the core controller is used to control the operation of the X-direction servo motor, the Y-direction servo motor and the Z-direction servo motor; the programmable controller is used to provide control instructions to the core controller, so that the core controller controls the operation of the X-direction servo motor, the Y-direction servo motor and the Z-direction servo motor according to the control instructions; the input / output module is used to realize signal transmission between the programmable controller and the core controller and signal transmission between the core controller and the control of the X-direction servo motor, the Y-direction servo motor and the Z-direction servo motor; the power module is used to supply power to the core controller and the programmable controller.

7. The embedded parts milling equipment in nuclear power construction as claimed in claim 3, characterized in that: The measuring unit includes a laser distance measuring sensor and a data acquisition device; A group of laser distance measuring sensors are installed on the Z guide rail. Multiple groups of data of embedded parts at a certain distance are measured by a group of laser distance measuring sensors. The data acquisition device collects and stores each group of data. The difference and target value of each measuring point are analyzed by the built-in measurement / analysis program of the data acquisition device. The iron chip collecting device comprises a splash plate, a collecting roller and a collecting box; The splash plate is a semi-enclosed splash plate, which is arranged around the milling cutter. The splash plate is used to limit the splashing range of iron chips after cutting by the milling cutter. The collecting roller is used to collect the iron chips and store them in a collecting box.

8. The embedded parts milling equipment in nuclear power construction as claimed in any one of claims 1 to 7, characterized in that: The milling drive assembly uses hydraulic pressure to drive the milling cutter to rotate, or uses a motor to drive the milling cutter to rotate; When the milling drive assembly adopts hydraulic drive to rotate the milling cutter, the milling drive assembly includes: a rotating motor and a reducer; the rotating motor is connected to the milling cutter through the reducer, and the rotating motor is used to drive the reducer to output power to the milling cutter, drive the milling cutter to rotate, and realize the rotating milling action of the milling cutter; When the milling drive assembly adopts a motor to drive the milling cutter to rotate, the milling drive assembly includes: a hydraulic motor, a reducer, a hydraulic pump station and a reversing valve; the hydraulic motor is connected to the milling cutter through the reducer, and the hydraulic motor is used to drive the reducer to output power to the milling cutter, drive the milling cutter to rotate, and realize the rotational milling action of the milling cutter; the control unit realizes the speed control of the milling cutter by controlling the speed of the hydraulic motor; The hydraulic pump station is connected to the hydraulic motor through an oil pipe, and the hydraulic oil in the hydraulic pump station is input into the hydraulic motor through the oil pipe. The operation of the hydraulic motor drives the milling cutter to rotate; wherein, the reversing valve is installed on the oil pipe, and the control unit controls the rotation direction of the milling cutter by controlling the direction of the reversing valve.

9. The embedded parts milling equipment in nuclear power construction as claimed in any one of claims 1 to 7, characterized in that: The milling device also includes a display unit, which includes a display screen and physical buttons.

10. A method for milling embedded parts in nuclear power construction, based on the milling equipment according to any one of claims 2 to 7, characterized in that: The steps of this method are as follows: Step 1: Install multiple sections of X-direction support beams in sequence along the arrangement direction of a group of embedded parts, and level all X-direction support beams after installation; Step 2: Perform a walking test on the milling equipment. During the walking test, the machine is stopped at both ends and the middle of each X-axis support beam as required to check the surface flatness of the X-axis support beam again. Step 3: The measuring unit measures the upper surface height of all embedded parts, marks the highest and lowest points and the target value, and takes the target value as the processing target to carry out the milling operation; Step 4: Select the highest embedded part, adjust the position of the milling cutter through the support assembly, and set the initial milling dimensions, which include: milling feed, milling length, and milling times; Step 5: After the embedded part is milled, the measuring unit measures the embedded part and displays the measurement data; At the same time, after each milling of an embedded part, the measuring unit will compare the data and display the measurement difference to ensure that the embedded parts in the same group are within the same value range; Step 6: Repeat steps 4 and 5 until all embedded parts in the same group have been milled, and then measure and verify the upper surface height of all embedded parts in the same group to ensure that the surface flatness of all embedded parts is within the required range.

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