Deburring tool, deburring system and deburring method

Abstract

The present invention discloses a deburring tool, a deburring system and a deburring method. The deburring tool comprises a floating cylinder, a floating piston, a spindle and a radial floating assembly. The floating cylinder is connected to an external device through a connecting piece. The floating cylinder is provided with a floating cavity running through it from top to bottom. The lower end of the floating cavity is provided with a limiting ring coaxially distributed therewith. The floating piston and the radial floating assembly are both arranged in the floating cavity. The radial floating assembly is distributed below the floating piston and contacts with the upper end of the limiting ring. The floating piston and the radial floating assembly are respectively provided with mounting holes running through them from top to bottom. The spindle passes through the mounting holes from top to bottom and is connected to the radial floating assembly. The deburring tool described in the present application has good quality in removing burrs. The present application also proposes a deburring system and a deburring method based on the deburring tool, which can realize high-quality, high-precision and high-stability deburring processing on the workpiece surface.

Description

Technical Field

[0001] The invention relates to the technical field of turning or boring, and in particular to a deburring tool, a deburring system and a deburring method. Background Art

[0002] During the casting, milling and other mechanical processing of products, burrs and flash are easily generated on the processed products, which will directly affect the surface quality of the processed parts and the overall performance of the parts. At present, most factories use manual methods to deal with burrs. The problems of manual burr treatment include: low yield rate, low production efficiency, high labor intensity, etc. Some factories use robot workstations, special machines and other equipment to replace manual deburring operations, so as to improve production efficiency and product deburring consistency and ensure product quality.

[0003] At present, the deburring equipment on the market generally uses a robot or a special machine to cooperate with a deburring floating tool to move the part relative to a fixed trajectory, so that the deburring floating tool contacts the part, thereby processing the burrs on the surface of the part. However, in the removal process of the deburring floating tool of the existing deburring equipment, the floating amount and floating air pressure of the deburring floating tool are set as fixed parameters before processing and cannot be modified. That is to say, the floating amount and floating air pressure of the deburring floating tool are manually pre-set, and then the robot or other equipment carries the deburring floating tool to complete the deburring process on the part surface at one time along a fixed trajectory.

[0004] For example, a Chinese invention patent with a publication number of CN212240577U discloses a floating spindle. The spindle in the invention patent is a pneumatic spindle, and the tool cannot be replaced. Moreover, the floating spindle disclosed in the patent can only float radially.

[0005] This method can complete the deburring of the part surface in actual application, but the disadvantage of this floating method is that the floating force will increase with the increase of the floating displacement, so when the workpiece itself has a large tolerance; when the positioning device or equipment cannot accurately position the workpiece; when the surface processing quality requirements are high, this application method cannot compensate for these errors, but will cause certain damage to the workpiece, which directly affects the processing quality and processing accuracy of the product. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a burr grinding tool which is convenient for tool replacement and can float axially and radially.

[0007] A deburring tool comprises a floating cylinder, a floating piston, a spindle and a radial floating assembly, wherein the floating cylinder is connected to an external device via a connecting piece, the floating cylinder is provided with a floating cavity which passes through the floating cylinder from top to bottom, the lower end of the floating cavity is provided with a limiting ring which is coaxially distributed therewith, the floating piston and the radial floating assembly are both arranged in the floating cavity, and the radial floating assembly is distributed below the floating piston and contacts with the upper end of the limiting ring, the floating piston and the radial floating assembly are respectively provided with mounting holes which pass through the floating piston from top to bottom, the spindle passes through the mounting holes from top to bottom and is connected to the radial floating assembly, and under the action of external force, the spindle can push the floating piston to float up and down in the floating cavity through the radial floating assembly, or drive the radial floating assembly to float radially on the spindle.

[0008] Preferably, the radial floating assembly includes a movable ring and a plurality of balls, the outer diameter of the movable ring is larger than the inner diameter of the limit ring, the outer wall of the movable ring is provided with a plurality of small holes evenly distributed along its circumference, the plurality of small holes correspond one-to-one to the plurality of balls, and the openings of the plurality of small holes are all facing the side away from the middle of the movable ring, the lower end of the floating cylinder body is provided with a plurality of vertically distributed strip grooves, the plurality of strip grooves correspond one-to-one to the plurality of balls, the movable ring is sleeved on the main shaft and connected thereto, the plurality of balls are respectively arranged in the corresponding small holes and extend out of the small holes and into the corresponding strip grooves, and under the action of external force, the main shaft floats radially and drives the balls to move up and down in the corresponding strip grooves.

[0009] Preferably, the small hole is a tapered hole.

[0010] Preferably, the floating cylinder body includes an upper cylinder body and a lower cylinder body, the upper cylinder body is connected and fixed to the connecting piece, the upper cylinder body is provided with an upper through hole passing through it up and down, the lower cylinder body is installed at the lower end of the upper cylinder body, and the lower cylinder body is provided with a lower through hole passing through it up and down and communicating with the upper through hole, the upper through hole and the lower through hole together enclose the floating chamber.

[0011] Preferably, the upper through hole is a flat countersunk hole, and the lower end of the floating piston is provided with an outer flange, and the floating piston can float upward in the floating cavity to a step where the outer flange is close to the flat countersunk hole.

[0012] Preferably, the inner diameter of the lower through hole is larger than that of the upper through hole, the upper end of the strip groove passes through the upper end of the lower cylinder body, and the plurality of balls can respectively roll upward in the corresponding strip grooves until they abut against the lower end of the upper cylinder body.

[0013] A deburring system includes a controller, an electrical signal amplifier, an electrical signal attenuator and an electrical proportional valve, and also includes the above-mentioned deburring tool, and the outer diameter of the floating piston matches the inner diameter of the upper section of the flat head countersunk hole, and the outer diameter of the outer flange matches the inner diameter of the lower section of the flat head countersunk hole, so that the floating piston and the flat head countersunk hole form a closed air cavity, the controller is electrically connected to the electrical proportional valve through the electrical signal amplifier and the electrical signal attenuator respectively, and the outlet of the electrical proportional valve is connected to the inside of the air cavity through a pipeline.

[0014] Preferably, it also includes a human-computer interaction interface, and the human-computer interaction interface is electrically connected to the controller.

[0015] A deburring method based on the above deburring system comprises the following steps:

[0016] Step 1, controlling an external device to carry a deburring tool to move to perform deburring processing on a workpiece;

[0017] Step 2, the electrical proportional valve obtains the air pressure in the air cavity and sends a current signal to the controller through the electrical signal amplifier, the controller receives the current signal and compares it with a preset current reference threshold, and executes step 3, step 4 or step 5;

[0018] Step 3: When the current signal received by the controller is greater than a preset current reference threshold, the controller sends a signal to the electrical proportional valve through the electrical signal attenuator, and the electrical proportional valve draws air out of the air cavity to reduce the air pressure in the air cavity;

[0019] Step 4: When the current signal received by the controller is equal to a preset current reference threshold, the controller does not send a signal;

[0020] Step 5: When the current signal received by the controller is less than a preset current reference threshold, the controller sends a signal to the electrical proportional valve through the electrical signal attenuator, and the electrical proportional valve inflates the air cavity to increase the air pressure in the air cavity.

[0021] Preferably, the step 1 further includes first setting a current reference threshold using a human-computer interaction interface, and then controlling an external device to carry a deburring tool to move to perform deburring processing on the workpiece.

[0022] When the spindle is grinding the burrs on the workpiece, the tool on the spindle will rotate. The present application limits the spindle to rotate with its tool through the radial floating assembly, thereby ensuring the normal use of the deburring tool, ensuring the quality of the tool in removing burrs, and avoiding damage to the tool.

[0023] The deburring system and deburring method described in the present application detect the air pressure in the air cavity to determine the floating force of the deburring tool, thereby solving the manufacturing error of the workpiece; avoiding the influence of the positioning error on the processing quality and processing accuracy of the workpiece, and can achieve high-quality, high-precision and high-stability deburring processing on the workpiece surface, and is even suitable for situations where the workpiece itself has a large manufacturing error or the product shape is relatively complex and the workpiece cannot be accurately positioned.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the deburring tool according to Embodiment 1 of the present invention;

[0027] Figure 2 A cross-sectional view of the deburring tool according to Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the deburring system according to Embodiment 2 of the present invention;

[0029] Figure 4 is a block diagram of the deburring system according to Embodiment 2 of the present invention;

[0030] Figure 5 This is a schematic flow chart of the deburring method described in Example 3 of the present invention.

[0031] The specific meanings of the reference numerals are as follows:

[0032] 1. Floating cylinder; 11. Upper cylinder; 12. Lower cylinder; 2. Floating piston; 21. Outer flange; 3. Spindle; 4. Radial floating assembly; 41. Movable ring; 42. Ball; 43. Small hole; 44. Strip groove; 5. Limit ring;

[0033] 100. Controller; 200. Electric signal amplifier; 300. Electric signal attenuator; 400. Electric proportional valve; 500. Human-machine interaction interface.

[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 The principles and features of the present invention are described, and the examples are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] Example 1

[0038] Reference Figure 1-2 , an embodiment of the present invention is proposed, which discloses a deburring tool including a floating cylinder 1, a floating piston 2, a main shaft 3 and a radial floating component 4, wherein the floating cylinder 1 is connected to an external device through a connecting piece, the floating cylinder 1 is provided with a floating cavity running through it from top to bottom, the lower end of the floating cavity is provided with a limiting ring 5 coaxially distributed therewith, the floating piston 2 and the radial floating component 4 are both arranged in the floating cavity, and the radial floating component 4 is distributed below the floating piston 2 and contacts with the upper end of the limiting ring 5, the floating piston 2 and the radial floating component 4 are respectively provided with mounting holes running through them from top to bottom, the main shaft 3 passes through the mounting holes from top to bottom and is connected to the radial floating component 4, under the action of external force, the main shaft 3 can push the floating piston 2 to float up and down in the floating cavity through the radial floating component 4, or drive the radial floating component 4 to float radially on the main shaft 3.

[0039] In the present application, the radial floating assembly 4 can and can only float up and down in the floating cavity, and cannot rotate horizontally in the floating cavity.

[0040] When using the deburring tool described in this embodiment, the spindle 3 is a high-speed electric spindle, and a tool is provided at the lower end of the spindle 3. An external device carries the spindle 3 to move along a fixed trajectory. The spindle 3 drives the tool to rotate and deburr the workpiece. During the movement of the spindle 3, the deburring tool will float along the contour of the workpiece due to various errors. The radial floating component 4 described in this embodiment limits the horizontal rotation of the spindle 3, thereby preventing the spindle 3 from rotating with the tool (not shown in the figure) installed at its lower end, thereby ensuring the normal use of the deburring tool, and ensuring the quality of the tool in removing burrs, and avoiding damage to the tool.

[0041] The tool on the spindle 3 is replaceable and is suitable for deburring of different workpieces.

[0042] Preferably, the radial floating assembly 4 includes a movable ring 41 and a plurality of balls 42, the outer diameter of the movable ring 41 is larger than the inner diameter of the limit ring 5, the outer wall of the movable ring 41 is provided with a plurality of small holes 43 evenly distributed along its circumferential direction, the plurality of small holes 43 correspond one-to-one to the plurality of balls 42, and the openings of the plurality of small holes 43 are all facing the side away from the middle of the movable ring 41, the lower end of the floating cylinder body 1 is provided with a plurality of vertically distributed strip grooves 44, the plurality of strip grooves 44 correspond one-to-one to the plurality of balls 42, the movable ring 41 is sleeved on the main shaft 3 and connected thereto, the plurality of balls 42 are respectively arranged in the corresponding small holes 43 and extend out of the small holes 43 and extend into the corresponding strip grooves 44, under the action of external force, the main shaft 3 floats radially and drives the balls 42 to move up and down in the corresponding strip grooves.

[0043] When the spindle 3 is performing deburring processing on a workpiece, the plurality of balls 42 can respectively roll in the corresponding strip grooves 44 , so that the movable ring 41 floats radially with the spindle 3 and limits the horizontal rotation of the spindle 3 .

[0044] A flangeless expansion sleeve is installed on the main shaft 3 and fixed to the lower end of the movable ring 41 through an expansion locking ring, and the flangeless expansion sleeve is clamped between the expansion locking ring and the movable ring 41.

[0045] Specifically, the small hole 43 is a tapered hole, so that the ball 42 can roll more smoothly in the small hole 43 .

[0046] Preferably, the floating cylinder body 1 includes an upper cylinder body 11 and a lower cylinder body 12, the upper cylinder body 11 is connected and fixed to the connecting member 1, the upper cylinder body 11 is provided with an upper through hole penetrating therethrough from top to bottom, the lower cylinder body 12 is installed at the lower end of the upper cylinder body 11, and the lower cylinder body 12 is provided with a lower through hole penetrating therethrough from top to bottom and communicating with the upper through hole.

[0047] Since the ball 42 rolls in the strip groove 44 and rubs against the lower cylinder body 12 , the material requirement is high, while the material requirement for the upper cylinder body 11 is low, which saves costs and reduces processing difficulty.

[0048] The upper end of the upper cylinder body 11 and the lower end of the lower cylinder body 12 may be respectively provided with protective covers to prevent external debris from falling into the floating chamber.

[0049] The upper through hole is a flat countersunk hole, and the lower end of the floating piston 2 is provided with an outer flange 21. The floating piston 2 can float upward in the floating chamber so that the outer flange 21 is close to the step of the flat countersunk hole; the inner diameter of the lower through hole is larger than the inner diameter of the upper through hole, and the upper end of the strip groove 44 passes through the upper end of the lower cylinder body 12. The multiple balls 42 can respectively roll upward in the corresponding strip grooves 44 until they are against the lower end of the upper cylinder body 11.

[0050] The upper through hole limits the maximum distance that the floating piston 3 floats upwards through its step, thereby preventing the floating piston 3 from falling off from the upper cylinder body 11 .

[0051] The lower cylinder body 12 limits the movement of the ball 42 through the lower end of the upper cylinder body 11. On the premise of facilitating the processing of the lower cylinder body 12, the movement stroke of the ball 42 is limited, which is beneficial to prolonging the service life of the deburring tool.

[0052] The limiting ring 5 is coaxially mounted on the lower end of the lower cylinder body 12 , and the upper end of the strip groove 44 passes through the lower end of the lower cylinder body 12 for easy processing.

[0053] Example 2

[0054] Reference Figure 3-4 Embodiment 2 proposes a deburring system, including a controller 100, a human-machine interface 500, an electrical signal amplifier 200, an electrical signal attenuator 300 and an electrical proportional valve 400, and also includes a deburring tool as described in the embodiment, the outer diameter of the floating piston 2 matches the inner diameter of the upper section of the flat head countersunk hole, and the outer diameter of the outer flange 21 matches the inner diameter of the lower section of the flat head countersunk hole, so that the floating piston 2 and the flat head countersunk hole form a closed air cavity, the controller 100 is electrically connected to the electrical proportional valve 400 through the electrical signal amplifier 200 and the electrical signal attenuator 300 respectively, and the outlet of the electrical proportional valve 400 is connected to the inside of the air cavity through a pipeline.

[0055] The electrical proportional valve 400 is used to detect the air pressure in the air cavity and send a current signal to the controller 100 through the electrical signal amplifier 200. The controller 100 receives the current signal and compares it with a preset current reference threshold. When the current signal received by the controller 100 is greater than the preset current reference threshold, the controller 100 sends a signal to the electrical proportional valve 400 through the electrical signal attenuator 300, and the electrical proportional valve 400 reduces the air pressure in the air cavity; when the current signal received by the controller 100 is less than the preset current reference threshold, the controller 100 sends a signal to the electrical proportional valve 400 through the electrical signal attenuator 300, and the electrical proportional valve 400 reduces the air pressure in the air cavity; when the current signal received by the controller 100 is equal to the preset current reference threshold, the controller 100 does not send a signal.

[0056] The external device carries a deburring floating tool and moves along a fixed trajectory to deburr the workpiece. During the movement, the deburring tool will float along the contour of the workpiece due to various errors, and the air pressure in the air cavity will also change with the change of the floating displacement. This embodiment controls the required floating force of the deburring tool by adjusting the air pressure in the air cavity. Compared with simply relying on the electrical proportional valve 400 to adjust the air pressure in the air cavity, the control is more precise.

[0057] The air inlet of the electric proportional valve 400 is communicated with the air source, and the air outlet thereof is communicated with the outside.

[0058] When the current signal received by the controller is less than the current reference threshold, the floating force required by the deburring tool is less than the expected floating force, and the electrical proportional valve 400 increases the air pressure in the air cavity to increase the floating force required by the deburring tool to be consistent with the expected floating force; when the current signal received by the controller is greater than the current reference threshold, the electrical proportional valve 400 reduces the air pressure in the air cavity to reduce the floating force required by the deburring tool to be consistent with the expected floating force, thereby ensuring that the floating force of the deburring tool is consistent under the action of burrs of different sizes, ensuring the consistency of processing quality and precision, and achieving high deburring processing precision and stable processing quality.

[0059] Since the spindle in the deburring tool described in the present application can float radially and axially, the electric proportional valve is used to indirectly measure the air pressure in the air cavity to realize the feedback of the floating force, so that the air pressure in the air cavity can be accurately controlled by the electric proportional valve to ensure the consistency of the floating force, thereby realizing closed-loop control of the floating force.

[0060] Preferably, a human-machine interaction interface 500 is further included, and the human-machine interaction interface 500 is electrically connected to the controller 100 .

[0061] The human-machine interaction interface 500 has a display output function, as well as a function of inputting instructions and setting a reference current threshold. The human-machine interaction interface 500 can be used to display information such as the current reference current threshold, the current air pressure in the air cavity, and the size of the current signal received by the controller. The operator can also set the reference current threshold through the human-machine interaction interface. The controller 100 obtains the reference current threshold through the human-machine interaction interface 500 to be suitable for the processing of different types of workpieces.

[0062] Example 3

[0063] like Figure 5 As shown, referring to the deburring system described in Example 2, this embodiment provides a deburring method, comprising the following steps:

[0064] Step 1, controlling an external device to carry a deburring tool to move to perform deburring processing on a workpiece;

[0065] Step 2, the electrical proportional valve obtains the air pressure in the air cavity and sends a current signal to the controller through the electrical signal amplifier, the controller receives the current signal and compares it with a preset current reference threshold, and executes step 3, step 4 or step 5;

[0066] Step 3: When the current signal received by the controller is greater than a preset current reference threshold, the controller sends a signal to the electrical proportional valve through the electrical signal attenuator, and the electrical proportional valve draws air out of the air cavity to reduce the air pressure in the air cavity;

[0067] Step 4: When the current signal received by the controller is equal to a preset current reference threshold, the controller does not send a signal;

[0068] Step 5: When the current signal received by the controller is less than a preset current reference threshold, the controller sends a signal to the electrical proportional valve through the electrical signal attenuator, and the electrical proportional valve inflates the air cavity to increase the air pressure in the air cavity.

[0069] The deburring method described in this embodiment can achieve high-quality, high-precision, and high-stability deburring processing on the workpiece surface, and is even suitable for situations where the workpiece itself has large manufacturing errors or the product shape is relatively complex and the workpiece cannot be accurately positioned.

[0070] Preferably, the method further includes first setting a current reference threshold value by using the human-machine interaction interface 500, and then controlling an external device to carry a deburring tool to move so as to perform deburring processing on the workpiece.

[0071] The human-machine interaction interface 500 can input different current reference thresholds to the controller 100 to be suitable for deburring different workpieces.

[0072] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A deburring system, characterized in that: The invention comprises a controller (100), an electric signal amplifier (200), an electric signal attenuator (300) and an electric proportional valve (400), and also comprises a deburring tool, wherein the deburring tool comprises a floating cylinder (1), a floating piston (2), a main shaft (3) and a radial floating assembly (4), wherein the floating cylinder (1) is connected to an external device via a connecting piece, wherein the floating cylinder (1) is provided with a floating cavity penetrating the floating cylinder (1) from top to bottom, wherein the lower end of the floating cavity is provided with a limiting ring (5) coaxially distributed therewith, and the floating piston (2) and the radial floating assembly (4) are both arranged on the floating cylinder (1). The radial floating assembly (4) is arranged below the floating piston (2) and in contact with the upper end of the limit ring (5). The floating piston (2) and the radial floating assembly (4) are respectively provided with mounting holes penetrating therethrough from top to bottom. The main shaft (3) passes through the mounting holes from top to bottom and is connected to the radial floating assembly (4). Under the action of external force, the main shaft (3) can push the floating piston (2) to float up and down in the floating cavity through the radial floating assembly (4), or drive the radial floating assembly (4) to float radially on the main shaft (3); The radial floating assembly (4) comprises a movable ring (41) and a plurality of balls (42). The outer diameter of the movable ring (41) is larger than the inner diameter of the limit ring (5). The outer wall of the movable ring (41) is provided with a plurality of small holes (43) evenly distributed along the circumference thereof. The plurality of small holes (43) correspond to the plurality of balls (42) one by one, and the openings of the plurality of small holes (43) are all oriented toward a side away from the middle of the movable ring (41). The lower end of the floating cylinder (1) is provided with A plurality of vertically distributed strip grooves (44), wherein the plurality of strip grooves (44) correspond one to one with the plurality of balls (42), the movable ring (41) is sleeved on the main shaft (3) and connected thereto, and the plurality of balls (42) are respectively arranged in the corresponding small holes (43) and extend out of the small holes (43) and extend into the corresponding strip grooves (44), and under the action of external force, the main shaft (3) floats radially and drives the balls (42) to move up and down in the corresponding strip grooves; The floating cylinder body (1) comprises an upper cylinder body (11) and a lower cylinder body (12), the upper cylinder body (11) being connected and fixed to the connecting member, the upper cylinder body (11) being provided with an upper through hole penetrating the upper cylinder body (11) vertically, the lower cylinder body (12) being mounted at the lower end of the upper cylinder body (11), and the lower cylinder body (12) being provided with a lower through hole penetrating the upper cylinder body (11) vertically and communicating with the upper through hole, the upper through hole and the lower through hole jointly enclosing to form the floating chamber; The upper through hole is a flat countersunk hole, and the lower end of the floating piston (2) is provided with an outer flange (21). The floating piston (2) can float upward in the floating cavity to a step where the outer flange (21) is close to the flat countersunk hole; The inner diameter of the lower through hole is larger than the inner diameter of the upper through hole, the upper end of the strip groove (44) passes through the upper end of the lower cylinder body (12), and the plurality of balls (42) can respectively roll upward in the corresponding strip grooves (44) until they abut against the lower end of the upper cylinder body (11); The outer diameter of the floating piston (2) matches the inner diameter of the upper section of the flat-headed countersunk hole, and the outer diameter of the outer flange (21) matches the inner diameter of the lower section of the flat-headed countersunk hole, so that the floating piston (2) and the flat-headed countersunk hole form a closed air cavity. The controller (100) is electrically connected to the electrical proportional valve (400) through the electrical signal amplifier (200) and the electrical signal attenuator (300), respectively, and the outlet of the electrical proportional valve (400) is connected to the inside of the air cavity through a pipeline.

2. The deburring system according to claim 1, characterized in that: It also includes a human-machine interaction interface (500), and the human-machine interaction interface (500) is electrically connected to the controller (100).

3. The deburring system according to claim 1, characterized in that: The small hole (43) is a tapered hole.

4. A deburring method based on the deburring system according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1, controlling an external device to carry a deburring tool to move to perform deburring processing on a workpiece; Step 2, the electrical proportional valve obtains the air pressure in the air cavity and sends a current signal to the controller through the electrical signal amplifier, the controller receives the current signal and compares it with a preset current reference threshold, and executes step 3, step 4 or step 5; Step 3: When the current signal received by the controller is greater than a preset current reference threshold, the controller sends a signal to the electrical proportional valve through the electrical signal attenuator, and the electrical proportional valve draws air out of the air cavity to reduce the air pressure in the air cavity; Step 4: When the current signal received by the controller is equal to a preset current reference threshold, the controller does not send a signal; Step 5: When the current signal received by the controller is less than a preset current reference threshold, the controller sends a signal to the electrical proportional valve through the electrical signal attenuator, and the electrical proportional valve inflates the air cavity to increase the air pressure in the air cavity.

5. The deburring method according to claim 4, characterized in that: The step 1 also includes first setting a current reference threshold using a human-machine interaction interface (500), and then controlling an external device to carry a deburring tool to move so as to perform deburring processing on the workpiece.

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