A structure for preventing accumulation of scraps in a numerical control rotary table

Abstract

The application relates to a structure for preventing scrap accumulation of a numerical control rotary table, which comprises a sealing cover plate, a second sealing element and a sealing flange coaxially arranged; a gas cavity is enclosed between the sealing cover plate and the sealing flange. The application can reduce downtime cleaning time, improve machining efficiency, effectively reduce labor cost, and prolong the service life of the numerical control five-axis rotary table.

Description

Technical Field

[0001] This invention relates to the field of CNC equipment technology, and in particular to a structure for preventing the accumulation of waste chips on a CNC rotary table. Background Technology

[0002] Scrap accumulation can cause jamming between the axes of a CNC five-axis rotary table, reducing its service life. Therefore, preventing scrap accumulation is one of the key design considerations for the sealing and protection of a CNC five-axis rotary table. There are two common methods: 1) Manual removal: Most factories currently rely on manual removal. After a certain amount of machining time, the machine is stopped, and a high-pressure air gun or water gun is used to remove larger scrap particles adhering to the connecting shafts of the CNC five-axis rotary table. This method not only requires machine downtime, affecting production efficiency, but also fails to prevent small scrap particles from entering the CNC five-axis rotary table. Furthermore, the cleaning process may introduce small scrap particles from the outside into the rotary table. 2) Maze protection: CNC five-axis rotary tables use a maze structure at the connection points between axes to prevent large scrap particles from entering the table. However, after prolonged machining, small scrap particles accumulate inside the maze, eventually causing internal blockage and rendering the maze ineffective. Summary of the Invention

[0003] The purpose of this invention is to provide a structure for preventing chip accumulation on a CNC rotary table that can reduce downtime for cleaning, thereby improving processing efficiency, effectively reducing labor costs, and extending the service life of a CNC five-axis rotary table.

[0004] To achieve the above technical solution, the technical solution of the present invention is as follows: a structure for preventing the accumulation of waste chips on a CNC rotary table, comprising a sealing cover plate, a second sealing element, and a sealing flange arranged coaxially; a gas cavity is formed between adjacent sealing cover plates and sealing flanges;

[0005] During operation, the gas cavity will expel any small particles of waste that may enter through the airflow, while simultaneously forming an air curtain around the sealing cover to prevent the cutting fluid from entering.

[0006] Furthermore, the second seal is a TC oil seal; the TC oil seal is disposed on the sealing flange.

[0007] Furthermore, the sealing flange is provided with a recessed internal cavity; the sealing flange is provided with an air passage; the air passage is connected to the internal cavity.

[0008] Furthermore, the sealing flange is provided with a drain groove; the drain groove is in communication with the internal cavity.

[0009] Furthermore, the drain trough and the air passage are arranged in the same plane.

[0010] Furthermore, the structure for preventing chip accumulation on the CNC rotary table also includes an adjustment component; the adjustment component is coaxially disposed on the sealing flange and is used to provide radial support and positioning guidance for the anti-sway axis of the CNC rotary table.

[0011] Furthermore, the adjustment component is an integral structure with at least 5 layers of spring steel structure stacked and supported.

[0012] Furthermore, the structure for preventing waste chip accumulation on the CNC rotary table also includes a deformation component; the deformation component is detachably installed on the internal cavity and is used to generate periodic deformation to shake off small particles of waste chip attached to its surface.

[0013] Furthermore, the deformation component includes a first deformation sheet layer, an insulating resin sheet layer, and a second deformation sheet layer that are sequentially and tightly bonded together; both the first and second deformation sheet layers are piezoelectric sensitive materials with radial thickness deformation; the two power supply circuits are for the first and second deformation sheet layers, respectively.

[0014] Specifically, by continuously switching between the two power supply circuits, under the inverse piezoelectric effect, the first and second deformable sheets undergo deformation in opposite directions, accelerating the airflow to remove waste debris.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) This invention uses a sealing cover to prevent large waste chips from entering the labyrinth groove on the CNC rotary table. Then, a second seal prevents the cutting fluid required for machining from entering the rotary table. Finally, the sealing flange is equipped with an air passage. The gas transmitted from the air passage forms a gas cavity in the sealing cover and the self-made sealing flange. Small particles of waste chips that may enter the interior are discharged from the chip removal groove below by the airflow. An air curtain is formed around the sealing cover to prevent the cutting fluid from entering, thereby reducing downtime for cleaning and improving machining efficiency. It also effectively reduces labor costs and increases the service life of the CNC five-axis rotary table.

[0017] 2) This invention provides radial support and positioning guidance for the rotating shaft through a multi-layer spring steel structure superimposed on an integrated structure, avoiding the impact of vibration on the sealing effect of the TC oil seal; in addition, it can ensure the spacing between the sealing cover plate and the rotating shaft, so that the air curtain is uniform and consistent, improving the sealing effect, preventing waste debris from entering and extending service life.

[0018] 3) This invention utilizes the inverse piezoelectric effect and the horseshoe-shaped structure of the arc-shaped extrusion sheet, as well as the characteristics of the first and second deformation sheets. By changing the thickness under the action of an electric field, and by applying opposite electric fields to the first and second deformation sheets, wave-like vibrations occur, which accelerates the airflow and blows small particles of waste into the chip removal groove for removal, thereby improving the service life of the CNC five-axis rotary table. Attached Figure Description

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] Figure 1 This is a front view of the structure of the present invention used to prevent chip accumulation on a CNC rotary table;

[0021] Figure 2 This is a three-dimensional structural diagram of the structure for preventing chip accumulation in a CNC rotary table according to the present invention;

[0022] Figure 3 This is a front view of the adjustment component of the present invention;

[0023] Figure 4 This is a partially enlarged schematic diagram of the deformation component of the present invention. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Please see Figures 1 to 2 As shown, a structure for preventing chip accumulation on a CNC rotary table includes a sealing cover plate 1, a second seal 2, and a sealing flange 3 arranged coaxially; a gas cavity 9 is formed between adjacent sealing cover plates 1 and sealing flanges 3. During operation, the gas cavity 9 discharges small particles of chipping material that may enter through airflow, while simultaneously forming an air curtain around the sealing cover plate 1 to prevent cutting fluid from entering. Specifically, the sealing cover plate 1 prevents large chips from entering the labyrinth groove on the CNC rotary table. The second seal 2 prevents cutting fluid required for machining from entering the rotary table. The sealing flange 3 has an internal air passage. Gas transmitted from the air passage forms a gas cavity between the sealing cover plate and the self-made sealing flange, allowing small particles of chipping material that may enter to be discharged through the chip removal groove below via airflow, and forming an air curtain around the sealing cover plate to prevent cutting fluid from entering.

[0027] Based on the above embodiments, the second sealing element 2 is a TC oil seal; the TC oil seal is disposed on the sealing flange 3, and the contact lip faces inward. In this embodiment, the TC oil seal is a double-lip oil seal with a self-tightening spring that is completely covered with rubber to perform active sealing on the rotating swing shaft, thereby improving the sealing effect and effectively preventing cutting fluid from entering and flowing into the inner side, thus improving the service life.

[0028] Based on the above embodiments, the sealing flange 3 is provided with a recessed internal cavity 5; the sealing flange 3 is provided with an air passage 4; the air passage 4 is connected to the internal cavity 5.

[0029] Based on the above embodiments, the sealing flange 3 is provided with a drain groove 6; the drain groove 6 is connected to the internal cavity 5.

[0030] Based on the above embodiments, the drain trough 6 and the air passage 4 are arranged in the same plane.

[0031] The sealing flange 3 is equipped with an air passage 4. The gas transmitted from the air passage forms a gas cavity in the internal cavity 5 of the sealing cover plate 1 and the sealing flange 3. Small particles of waste that may enter the cavity are discharged from the chip discharge groove 6 below by the airflow, and a ring of air curtain is formed around the sealing cover plate 1 to prevent cutting fluid from entering.

[0032] Please see Figures 1 to 3 As shown, based on the above embodiment, the structure for preventing chip accumulation on the CNC rotary table further includes an adjustment component 7; the adjustment component 7 is coaxially disposed on the sealing flange 3 and is used to provide radial support and positioning guidance for the anti-sway shaft of the CNC rotary table.

[0033] Based on the above embodiments, the adjustment component 7 is an integrated structure with at least 5 layers of spring steel structure superimposed for support.

[0034] By employing the above-mentioned technology, this invention provides radial support and positioning guidance for the rotating shaft through a multi-layered spring steel structure with integrated support, avoiding damage to the TC oil seal sealing effect due to vibration; in addition, it ensures the spacing between the sealing cover plate and the rotating shaft, resulting in a uniform air curtain that improves the sealing effect, prevents debris from entering, and extends service life.

[0035] Please see Figures 1 to 2 as well as Figure 4 As shown, based on the above embodiment, the structure for preventing waste chip accumulation on the CNC rotary table also includes a deformation component 8; the deformation component 8 is detachably installed on the internal cavity 5 and is used to generate periodic deformation to shake off small particles of waste chip attached to its surface.

[0036] Based on the above embodiments, the deformation component 8 includes a first deformation sheet layer 81, an insulating resin sheet layer 82, and a second deformation sheet layer 83 that are sequentially and tightly bonded together; the first deformation sheet layer 82 and the second deformation sheet layer 83 are both piezoelectric sensitive materials with radial thickness deformation; the two power supply circuits are for the first deformation sheet layer 82 and the second deformation sheet layer 83, respectively.

[0037] Specifically, by continuously switching between the two power supply circuits, under the inverse piezoelectric effect, the first deformable sheet layer 81 and the second deformable sheet layer 83 undergo deformation in opposite directions, accelerating the airflow to remove waste debris.

[0038] By adopting the above-mentioned technical solution, the reverse piezoelectric effect is utilized. Taking advantage of the horseshoe-shaped structure of the arc-shaped extrusion sheet and the characteristics of the first and second deformation sheets, the thickness changes under the action of an electric field, and the first and second deformation sheets undergo wave-like vibration under the action of opposite electric fields. This accelerates the airflow and blows small particles of waste into the chip removal groove for discharge, thereby improving the service life of the CNC five-axis rotary table.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art should be able to make equivalent embodiments by making some changes or modifications to the above-disclosed technical content without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A structure for preventing chip accumulation on a CNC rotary table, characterized in that: The structure includes a sealing cover plate (1), a second sealing element (2), and a sealing flange (3) arranged coaxially; a gas cavity (9) is formed between adjacent sealing cover plates (1) and sealing flanges (3); wherein: during operation, the gas cavity (9) discharges small particles of waste that may enter the interior through airflow, while forming a ring of air curtain around the sealing cover plate (1) to prevent cutting fluid from entering; the structure for preventing waste accumulation on the CNC rotary table also includes an adjustment component (7); the adjustment component (7) is coaxially arranged on the sealing flange (3) and is used to provide radial support and positioning guidance for the anti-sway axis of the CNC rotary table; the adjustment component (7) is an integrated structure with at least 5 layers of spring steel superimposed support; the structure for preventing waste accumulation on the CNC rotary table also includes deformation Component (8); The deformation component (8) is detachably installed on the internal cavity (5) and is used to generate periodic deformation to shake off small particles of waste attached to its surface; The deformation component (8) includes a first deformation sheet layer (81), an insulating resin sheet layer (82) and a second deformation sheet layer (83) that are tightly bonded together in sequence; The first deformation sheet layer (81) and the second deformation sheet layer (83) are both radial thickness deformation type piezoelectric sensitive materials; Two power supply circuits supply power to the first deformation sheet layer (81) and the second deformation sheet layer (83) respectively; Wherein: By continuously switching the two power supply circuits, under the inverse piezoelectric effect, the first deformation sheet layer (81) and the second deformation sheet layer (83) undergo deformation in opposite directions, thereby generating periodic deformation to accelerate the airflow to remove waste.

2. The structure for preventing chip accumulation on a CNC rotary table as described in claim 1, characterized in that: The second sealing element (2) is a TC oil seal; the TC oil seal is disposed on the sealing flange (3).

3. The structure for preventing chip accumulation on a CNC rotary table as described in claim 2, characterized in that: The sealing flange (3) is provided with a recessed internal cavity (5); the sealing flange (3) is provided with an air passage (4); the air passage (4) is connected to the internal cavity (5).

4. The structure for preventing chip accumulation on a CNC rotary table as described in claim 3, characterized in that: The sealing flange (3) is provided with a drain groove (6); the drain groove (6) is connected to the internal cavity (5).

5. The structure for preventing chip accumulation on a CNC rotary table as described in claim 4, characterized in that: The drain trough (6) and the air passage (4) are arranged in the same plane.

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