An aeronautical additive structure piece machining allowance removing device

Abstract

The utility model discloses an aviation additive structure spare machine adds excess device, including work table, the top of work table is equipped with the clamping assembly for fixed additive structure spare, the top of work table is opened in the material collecting groove of through -going type, the utility model discloses a collection subassembly's setting, its top and work table bottom close adhesion, bottom and material collecting groove intercommunication, ensure that the waste in material collecting groove can completely fall into the material collecting hopper, when starting exhaust fan, the negative pressure is formed in the inside of material collecting hopper, and the airflow of work table top drives the chippings and dust to pass through material collecting groove and is discharged into the inside of material collecting hopper, and the chippings will drop into the bottom of material collecting hopper under the action of gravity, and the air with dust is discharged after filtering through the filter box, thereby realizing the effect that the chippings waste and dust are collected quickly, reduce the situation that the chippings and dust produced affect processing quality, avoid dust diffusion to the air and harm human health simultaneously, and the use efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of aerospace materials technology, specifically to a machining allowance removal device for aerospace additive structural parts. Background Technology

[0002] The machining allowance removal device for aerospace additive structural parts is an automated device for removing supports and finishing surfaces of parts after metal 3D printing or laser additive manufacturing. It is mainly used in the aerospace field to solve the problems of low efficiency and poor precision of traditional manual processing. By switching tools such as saw blades and milling cutters with industrial robots, it can automatically remove the support structure of metal 3D printed parts, and the efficiency can be several times or even dozens of times that of manual processing.

[0003] Existing machining removal devices use clamping components to hold and fix structural parts, and then use a robotic arm to control the milling cutter to perform secondary processing on excess support structures or structures that need to be opened according to a preset path, thereby improving the processing efficiency of aerospace additive structural parts. However, the metal scrap and dust generated during the milling process usually fall directly onto the worktable, which is not only difficult to clean, but may also splash into the processing area and affect the processing quality. At the same time, the dust diffusion will endanger the health of operators. Therefore, we need to propose a machining removal device for aerospace additive structural parts. Utility Model Content

[0004] The purpose of this invention is to provide a machining allowance for aerospace additive structural parts. Through the clamping assembly, the additive structural part is fixed to the top of the worktable. A robotic arm is activated to drive a milling cutter to mill the excess portion of the additive structural part. Simultaneously, through the collection assembly, a negative pressure is created inside the collection hopper when the exhaust fan is activated. The airflow from the top of the worktable carries debris and dust through the collection trough into the collection hopper. This allows the debris to fall to the bottom of the collection hopper under gravity, while the dust-laden air is filtered through a filter box before being discharged. This achieves rapid collection of debris and dust, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a machining allowance removal device for aerospace additive structural parts, comprising a worktable, a clamping assembly for fixing the additive structural parts installed on the top of the worktable, a material collection trough extending through the top of the worktable, a collection assembly for collecting waste material installed at the bottom of the worktable, a machining robotic arm bolted to the top of the worktable, and a detachable milling cutter installed at one end of the robotic arm; the collection assembly is fixedly installed in a material collection hopper at the bottom of the worktable, the bottom of the material collection hopper is connected to the material collection trough, a filter box is connected to the side of the material collection hopper, and an exhaust fan is connected to one side of the filter box via a connecting pipe, the exhaust fan being bolted to one side of the filter box via a connecting plate.

[0006] Preferably, a detachable filter plate is inserted into one side of the filter box through a recessed groove, and a discharge pipe is connected to the bottom of the collection hopper.

[0007] Preferably, the inside of the collection trough is equipped with several sets of baffles, which are evenly and parallelly distributed, and all sets of baffles are arranged in an inverted V shape.

[0008] Preferably, the clamping assembly includes two sets of support plates fixedly installed on the top of the workbench, and a set of electric actuators is bolted to the opposite sides of the two sets of support plates. A set of clamping plates is installed at the output end of each set of electric actuators.

[0009] Preferably, a set of sliding rods is slidably installed through one end of each of the two sets of support plates, one end of each of the four sets of sliding rods is fixedly connected to one side of each of the two sets of clamping plates, and a set of limiting plates is fixedly installed at the other end of each of the four sets of sliding rods.

[0010] Preferably, the machining end of the robotic arm is fixedly fitted with a mounting bracket, and an air nozzle is installed inside the mounting bracket, with the air nozzle's air jet tip angled to align with the milling cutter.

[0011] Preferably, a protective barrier is fixedly installed on the top of the workbench, and a door is rotatably installed on the front side of the protective barrier.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention, through the design of the collection component, ensures that its top fits tightly against the bottom of the workbench and its bottom connects to the collection trough, guaranteeing that all waste material in the collection trough falls completely into the collection hopper. When the exhaust fan is activated, a negative pressure is created inside the collection hopper, and the airflow from the top of the workbench carries debris and dust through the collection trough into the inside of the collection hopper. The debris falls to the bottom of the collection hopper under gravity, while the dust-laden air is filtered through the filter box before being discharged. This achieves rapid collection of debris, waste material, and dust, reducing the impact of generated debris and dust on processing quality, while preventing dust from spreading into the air and harming human health, thus improving the efficiency of the device.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the installation structure of the clamping assembly of this utility model;

[0017] Figure 3 This is an exploded view of the collection component of this utility model;

[0018] Figure 4 This is a schematic diagram of the jet nozzle installation structure of this utility model;

[0019] Figure 5 This is an exploded view of the clamping component of this utility model.

[0020] In the diagram: 1. Workbench; 2. Clamping assembly; 21. Support plate; 22. Electric actuator; 23. Clamping plate; 24. Slide rod; 25. Limiting plate; 3. Collection trough; 4. Baffle; 5. Collection assembly; 51. Collection hopper; 52. Filter box; 53. Filter plate; 54. Exhaust fan; 55. Discharge pipe; 6. Robotic arm; 7. Milling cutter; 8. Fixing frame; 9. Air nozzle; 10. Protective enclosure; 11. Gate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 This utility model provides a machining allowance removal device for aerospace additive structural parts, including a workbench 1. A clamping assembly 2 for fixing the additive structural parts is installed on the top of the workbench 1. A material collection trough 3 is opened through the top of the workbench 1. A collection assembly 5 for collecting waste material is installed at the bottom of the workbench 1. A machining robotic arm 6 is bolted to the top of the workbench 1. A detachable milling cutter 7 is installed at one end of the robotic arm 6. The collection assembly 5 is fixedly installed in a material collection hopper 51 at the bottom of the workbench 1. The bottom of the material collection hopper 51 is connected to the material collection trough 3. A filter box 52 is connected to the side of the material collection hopper 51. An exhaust fan 54 is connected to one side of the filter box 52 through a connecting pipe. The exhaust fan 54 is bolted to one side of the filter box 52 through a connecting plate.

[0023] In use, the additive structure is fixed to the top of the worktable 1 by the clamping component 2. The robotic arm 6 is started to drive the milling cutter 7 to mill the excess part of the additive structure. At the same time, the collection hopper 51 is an inverted cone structure with its top tightly attached to the bottom of the worktable 1 and its bottom connected to the collection trough 3, ensuring that the waste in the collection trough 3 can fall completely into the collection hopper 51. When the exhaust fan 54 is started, a negative pressure is formed inside the collection hopper 51. The airflow at the top of the worktable 1 carries the debris and dust through the collection trough 3 into the inside of the collection hopper 51. The debris will fall to the bottom of the collection hopper 51 under the action of gravity, while the air with dust is filtered by the filter box 52 and discharged, thereby achieving the effect of rapid collection of debris and dust. A detachable milling cutter 7 is installed at one end of the robotic arm 6. The milling cutter 7 is made of cemented carbide and can be quickly replaced with different models of cutters according to processing needs, improving the versatility of the device.

[0024] A removable filter plate 53 is inserted into a concave groove on one side of the filter box 52. A discharge pipe 55 is connected to the bottom of the collection hopper 51. The filter plate 53 uses multi-layer composite filter media. The outer layer is a metal mesh to block larger particles of waste, and the inner layer is high-efficiency filter cotton to filter fine dust. The concave groove design facilitates the quick disassembly and replacement of the filter plate 53 and makes maintenance and cleaning easy. A manual valve is provided on the discharge pipe 55. When a certain amount of waste is collected in the collection hopper 51, the valve can be opened to discharge the waste. The operation is convenient.

[0025] The inside of the material collection trough 3 is equipped with several sets of baffles 4, which are evenly and parallelly distributed and are all in an inverted V-shape. The inverted V-shape structure can guide the waste material to slide down during the processing, avoiding the accumulation of waste material. At the same time, it can reduce the air inlet area of ​​the material collection hopper 51 and increase the air inlet speed, thereby increasing the negative pressure suction and indirectly improving the efficiency of waste and dust collection.

[0026] The clamping assembly 2 includes two sets of support plates 21 fixedly installed on the top of the worktable 1. Each set of support plates 21 is bolted with a set of electric actuators 22 on opposite sides. Each set of electric actuators 22 has a clamping plate 23 installed at its output end. The aerospace additive structural component is placed in the clamping area on the top of the worktable 1, between the two sets of clamping plates 23. When the electric actuators 22 are activated, they push the clamping plates 23 toward the structural component until the anti-slip rubber pads on the clamping plates 23 are in close contact with the structural component. The clamping force is set by the servo control system of the electric actuators 22 to ensure that the structural component is fixed and stable, while avoiding excessive clamping and damage to the component.

[0027] Each of the two sets of support plates 21 has a sliding rod 24 slidably mounted through one end. One end of each of the four sets of sliding rods 24 is fixedly connected to one side of each of the two sets of clamping plates 23. The other end of each of the four sets of sliding rods 24 is fixedly mounted with a limiting plate 25. The four sets of sliding rods 24 are symmetrically distributed and guide the movement of the clamping plate 23, ensuring that the clamping plate 23 moves in a straight line under the drive of the electric push rod 22, and preventing the clamping plate 23 from shifting during clamping. The other end of each of the four sets of sliding rods 24 is fixedly mounted with a limiting plate 25, which is used to limit the sliding stroke of the sliding rod 24 and prevent the sliding rod 24 from falling out of the support plate 21.

[0028] The machining end of the robotic arm 6 is fixedly fitted with a mounting bracket 8. An air nozzle 9 is installed inside the mounting bracket 8. The air nozzle 9 is angled and aligned with the milling cutter 7. With the air nozzle 9 aligned with the milling cutter 7 at the machining end of the robotic arm 6, the high-pressure gas during machining not only effectively cools the milling cutter 7, extending its service life, but also blows waste material from the machining area towards the collection trough 3, further improving waste collection efficiency and preventing waste accumulation from affecting machining accuracy.

[0029] A protective barrier 10 is fixedly installed on the top of the workbench 1. A door 11 is rotatably installed on the front side of the protective barrier 10. The protective barrier 10 is made of transparent acrylic sheet, which can not affect the operator's observation of the processing process, and can effectively block the splashing of waste materials to ensure operational safety. The door 11 is rotatably installed on the front side of the protective barrier 10. A magnetic sealing strip is provided between the door 11 and the protective barrier 10. When the door 11 is closed, a closed processing space can be formed to prevent dust from spreading. The door 11 is equipped with a safety lock. The door 11 is locked during the processing to avoid injury to personnel due to misoperation.

[0030] In practical use: Select a suitable milling cutter 7 according to the size and processing requirements of the aerospace additive structural part to be processed, and install it at the end of the robotic arm 6 through the flange; check whether the filter plate 53 is installed in place, and close the manual butterfly valve on the discharge pipe 55; connect the high-pressure air source to the jet nozzle 9, open the barrier door 11 on the front side of the protective enclosure 10, place the aerospace additive structural part in the clamping area at the top of the worktable 1, between the two sets of clamping plates 23; start the electric push rod 22, the electric push rod 22 pushes the clamping plate 23 to move towards the structural part, and by shortening the distance between the two sets of clamping plates 23, the aerospace additive structural part is clamped and fixed; close the barrier door 11 and lock the safety lock;

[0031] Based on the required amount of material removed from the structural components, the machining path program is written through the control system of the robotic arm 6. The robotic arm 6 and the milling cutter 7 are started. The robotic arm 6 drives the milling cutter 7 to process the structural components according to the preset path. At the same time, the exhaust fan 54 and the air nozzle 9 are started. The air nozzle 9 sprays high-pressure gas into the cutting area of ​​the milling cutter 7 to cool the milling cutter 7. At the same time, the waste and dust generated during processing are blown away from the cutting point. The exhaust fan 54 creates negative pressure in the collection hopper 51 and the filter box 52. The waste in the collection trough 3 falls into the collection hopper 51 under the guidance of the baffle 4. The dust carried by the airflow enters the filter box 52 and is filtered by the filter plate 53. The purified air is discharged through the exhaust fan 54.

[0032] After processing is completed, shut down the robotic arm 6, milling cutter 7, exhaust fan 54 and jet nozzle 9, open the stop door 11, start the electric actuator 22 to drive the clamping plate 23 to reset, and remove the processed structural parts; open the manual valve plate on the discharge pipe 55, and the larger particles of waste collected in the collection hopper 51 are discharged into the collection container through the discharge pipe 55; disassemble the filter plate 53 for cleaning or replacement, and clean the residual dust inside the filter box 52 (depending on the condition of the filter plate 53, it is not necessary to clean or replace the filter plate 53 after each processing); after completion, reinstall the filter plate 53 and wait for the next processing.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machining allowance removal device for aerospace additive structural parts, characterized in that: Includes a workbench (1), a clamping assembly (2) for fixing additive structural parts is installed on the top of the workbench (1), a material collection trough (3) is opened through the top of the workbench (1), a collection assembly (5) for collecting waste is installed at the bottom of the workbench (1), a machining robot arm (6) is bolted to the top of the workbench (1), and a detachable milling cutter (7) is installed at one end of the robot arm (6); The collecting component (5) is fixedly installed in the collecting hopper (51) at the bottom of the workbench (1). The bottom of the collecting hopper (51) is connected to the collecting trough (3). A filter box (52) is installed on the side of the collecting hopper (51). An exhaust fan (54) is installed on one side of the filter box (52) through a connecting pipe. The exhaust fan (54) is bolted to one side of the filter box (52) through a connecting plate.

2. The machining allowance removal device for aerospace additive structural parts according to claim 1, characterized in that: A removable filter plate (53) is inserted into one side of the filter box (52) through a concave groove, and a discharge pipe (55) is connected to the bottom of the collection hopper (51).

3. The machining allowance removal device for aerospace additive structural parts according to claim 1, characterized in that: The material collection trough (3) is equipped with several sets of baffles (4), which are evenly and parallelly distributed, and all sets of baffles (4) are arranged in an inverted V shape.

4. The machining allowance removal device for aerospace additive structural parts according to claim 1, characterized in that: The clamping assembly (2) includes two sets of support plates (21) fixedly installed on the top of the workbench (1). Each set of support plates (21) is bolted with a set of electric actuators (22) on the opposite side. Each set of electric actuators (22) is equipped with a set of clamping plates (23) at the output end.

5. The machining allowance removal device for aerospace additive structural parts according to claim 4, characterized in that: One end of each of the two sets of support plates (21) is slidably mounted with a set of slide rods (24). One end of each of the four sets of slide rods (24) is fixedly connected to one side of each of the two sets of clamping plates (23). The other end of each of the four sets of slide rods (24) is fixedly mounted with a set of limiting plates (25).

6. The machining allowance removal device for aerospace additive structural parts according to claim 1, characterized in that: The machining end of the robotic arm (6) is fixedly fitted with a mounting bracket (8), and an air nozzle (9) is installed inside the mounting bracket (8). The air nozzle (9) is tilted and aligned with the milling cutter (7).

7. The machining allowance removal device for aerospace additive structural parts according to claim 1, characterized in that: A protective barrier (10) is fixedly installed on the top of the workbench (1), and a door (11) is rotatably installed on the front side of the protective barrier (10).

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