Rotary window for CNC machining center and forming method of window base

Abstract

The invention provides a rotary window for a CNC machining center. The rotary window comprises a window base, and the window base is installed on CNC equipment sliding door glass in an adhesive mode; the window base is a high-strength light window base, a supporting end part integrated with the window base is arranged on the window base, the supporting end part comprises a positioning end part and a rotary sealing cover which is matched with the window base for use and is in sealing connection with the window base, and explosion-proof glass is arranged between the window base and the rotary sealing cover. And the explosion-proof glass is driven by the driving system. According to the CNC equipment sliding door window, the supporting end part which is integrally arranged with the window base is additionally arranged, and the high-strength light window base is adopted to replace a traditional window base made of a metal material, so that a driving system can be conveniently mounted on the positioning end part of the supporting end part, and the window base can be conveniently mounted on CNC equipment sliding door glass in an adhesive manner; and therefore, external high-humidity air is effectively prevented from entering the CNC machining equipment, and the definition of the rotating window is improved.

Description

Technical Field

[0001] This invention belongs to the field of CNC machining center technology, and specifically relates to a method for forming a rotating window and window base for a CNC machining center. Background Technology

[0002] CNC machining equipment typically refers to precision machining equipment that uses computer digital control, also known as numerical control machine tools. During CNC machining, cutting fluid, chips, and other contaminants often adhere to the safety glass of the sliding doors, forming a thin film of dirt. This film can reduce transparency by 40%-60%, making it impossible for the operator to observe the machining process.

[0003] To address this issue, a rotating viewing window was developed. The high-speed rotation of the window generates centrifugal force, quickly dislodging the cutting fluid and debris, thus creating a transparent viewing area. Existing rotating viewing windows require a mounting hole to be drilled in the sliding door glass of the CNC machining equipment before the window is installed.

[0004] However, when the rotating window rotates at high speed, it will damage the seal between the rotating window and the mounting hole, causing high humidity air from the outside to enter the CNC machining equipment. Furthermore, the hot and humid air formed by the evaporation of the cutting fluid during CNC machining will condense into water droplets after contacting the cold surface of the rotating window and adhering to the end face of the rotating window, resulting in a blurred view.

[0005] Patent publication number CN 214685555 U discloses a rotating observation window, belonging to the field of CNC machining equipment technology. It includes an annular impeller, a transparent lens, a fixed ring, an annular mounting base, an air inlet connector, and a gas guide plate. The transparent lens is fixed to the inner end of the annular impeller, and blades are distributed circumferentially on the outer end face of the annular impeller. The outer end of the fixed ring is fixed to the inner end of the annular mounting base, and the annular impeller is mounted on the fixed ring via bearings and can rotate freely. An air inlet connector is fixed to the outer wall of the annular mounting base, and the air inlet connector and the annular mounting base have air guide channels inside to guide external high-pressure gas to the blades of the annular impeller. The transparent lens is mounted on the annular impeller. High-pressure gas causes the annular impeller and the transparent lens to rotate at high speed together. When cutting fluid or debris splashes onto the transparent lens, the material in contact with or adhering to the transparent lens is quickly thrown off, allowing the observation window to maintain higher transparency. However, the above technical solution still uses the method of opening a mounting hole in the sliding glass of the CNC machining equipment and then installing the rotating window into the mounting hole, which still has the technical problem of poor sealing.

[0006] Therefore, how to solve the defects in the above technical solutions has become one of the urgent problems to be solved in the field of CNC machining center technology. Summary of the Invention

[0007] In view of the problems existing in the background art, the present invention provides a rotating window for CNC machining centers.

[0008] Its features include,

[0009] A viewing window base, which is attached to the sliding glass door of the CNC equipment;

[0010] The viewing window base is made of high-strength, lightweight material.

[0011] The base of the viewing window is provided with an integrated support end.

[0012] Furthermore, the supporting end includes a positioning end.

[0013] A rotating sealing cover used in conjunction with the viewing window base for a sealed connection.

[0014] An explosion-proof glass is provided between the viewing window base and the rotating sealing cover.

[0015] Furthermore, the explosion-proof glass is driven by the drive system, which is mounted on the positioning end.

[0016] Furthermore, the drive shaft of the drive system is connected to the explosion-proof glass via a connector.

[0017] Optionally, a camera system is provided on the viewing window base, and the camera system includes a control module.

[0018] Furthermore, the control module is mounted on the positioning end;

[0019] The control module's USB interface is connected to the camera of the camera system.

[0020] The camera's interface is connected to a power plug;

[0021] Optionally, the connector includes a connector base, a first bearing, and a second bearing.

[0022] The first bearing and the second bearing are respectively provided with a first end face and a second end face.

[0023] Furthermore, the first end face and the second end face are the large end face and the small end face, respectively.

[0024] And the distance between the small end faces of the first end face and the second end face is L1.

[0025] The distance between the large end faces of the first end face and the second end face is L2, and L1 is less than L2;

[0026] The center lines of the two sets of oppositely arranged first end faces intersect with the center line of the connector to form an intersection point C.

[0027] The center lines of the two sets of oppositely arranged second end faces 5 intersect with the center line of the connector to form an intersection point D.

[0028] The distance between C and D is L3, and L3 is less than L2.

[0029] Optionally, a sealing assembly is provided on the outside of the drive shaft of the drive system.

[0030] It is also locked by a locking unit.

[0031] The sealing assembly includes a first seal and a second seal.

[0032] The locking unit includes a locking ring.

[0033] Furthermore, the locking ring has an opening groove.

[0034] Furthermore, the inner wall of the locking ring is provided with a locking clip and a serrated clip integrally formed with the locking clip.

[0035] The serrated block, which is away from the opening slot, extends into the second seal to engage and connect.

[0036] The locking clip, located away from the opening slot, extends into the first seal to engage.

[0037] Optionally, the first seal is formed by multiple bending processes.

[0038] The first seal includes a longitudinal end and a blocking end.

[0039] When the locking unit is in the locked state, the second seal includes a recessed end and a bent end.

[0040] Furthermore, the end of the retaining element and the recessed end are in close contact.

[0041] The contact end of the second seal is arc-shaped and fits tightly against the longitudinal end.

[0042] The bent end of the second seal is in close contact with the bent end of the first seal to form a U-shaped seal.

[0043] Optionally, the inner wall of the second seal is provided with a lip seal integrally formed therewith.

[0044] Furthermore, the insertion end of the lip seal extends into the first seal.

[0045] The arc-shaped end of the lip seal is in close contact with the inner wall of the first seal.

[0046] Optionally, the viewing window base is provided with a sealing groove along its circumferential outer wall.

[0047] Furthermore, an elastic sealing element is provided within the sealing groove.

[0048] Furthermore, the elastic seal is used in conjunction with the mounting groove provided on the rotary sealing cover.

[0049] So that the elastic seal can be engaged in the mounting groove.

[0050] Furthermore, the outer wall of the elastic seal is in close contact with the inner wall of the mounting groove, so that the explosion-proof glass is confined between the window base and the rotating sealing cover.

[0051] Optionally, a bottom cavity is provided between the sealing groove and the bottom end face of the elastic seal.

[0052] Furthermore, a through hole is provided on the bottom cavity.

[0053] The resilient seal includes multiple sets of support legs, giving it an overall double-arched shape.

[0054] The height of the elastic seal is 2.9 mm and the width is 3 mm.

[0055] In the initial state, the elastic seal is located at the bottom of the sealing groove and in contact with it, and is in a natural, uncompressed state with the rotating sealing cover;

[0056] When in a sealed state, an auxiliary seal is provided on the top end face of the elastic seal away from the bottom cavity, and the auxiliary seal includes an insert block.

[0057] The rotary sealing cover has a slot for the insert of the auxiliary sealing element to extend into and engage.

[0058] Optionally, the insert block is arranged in a triangular shape.

[0059] When the insert block extends into the slot.

[0060] When the outer wall of the insert block is in close contact with the inner wall of the slot,

[0061] Furthermore, the longitudinal end of the auxiliary seal is in close contact with the inner wall of the rotary sealing cover of the slot;

[0062] When the insert of the auxiliary seal is tightly fitted into the slot, a snap-fit ​​connection is formed.

[0063] A sealing clip located on the top end face of the auxiliary seal extends into the sealing groove to engage and connect.

[0064] The sealing clip is used in conjunction with the sealing groove so that the outer wall of the sealing clip is tightly fitted with the inner wall of the sealing groove;

[0065] The sealing clip is hexagonal in shape.

[0066] A method for forming the base of a rotating viewport for a CNC machining center includes the following steps:

[0067] Step S1: 0.3-0.5 parts of polypropylene (PP), 0.05-0.15 parts of polyurethane (PU), 0.1-0.2 parts of polyvinyl chloride (PVC), 0.1-0.2 parts of polycarbonate (PC), 0.05-0.1 parts of polyamide (PA), and 0.05-0.1 parts of polyethylene (PE) are heated to a molten state and mixed to obtain mixture A;

[0068] Step S2: The obtained mixture A is injected through the injection cylinder, so that the mixture A is transported into the cavity of the mold through the H-shaped runner, so that the mixture A is injection molded in the cavity, and then demolded to obtain a high-strength, lightweight product.

[0069] Step S3: Add various type E epoxy resins, self-extinguishing epoxy resins and o-cresol epoxy resins into an oven and heat to melt at 100°C.

[0070] Step S4: Input the molten material into a high-speed disperser and stir at 1500-2000 rpm for 15-20 minutes to ensure that all components are fully mixed.

[0071] Step S5: Then, cool the fully fused material to below 75°C, add the required latent medium-high temperature curing agent and accelerator in sequence, switch to low speed stirring (300-500 rpm) to avoid introducing too many air bubbles, mix and stir evenly to obtain mixture B;

[0072] Step S6: The obtained mixture is fed into a vacuum degassing machine and treated at a pressure of -0.09 MPa for 30 minutes until no visible bubbles are visible.

[0073] Step S7: Pour the prepared mixture B onto the coating roller preheated to 80°C. By adjusting the roller gap, the mixture B is evenly coated on the surface of the release paper. After cooling by the cooling plate, a layer of PE release film is applied and the film is rolled up.

[0074] Step S8: Cut the prepared adhesive film into two layers according to the process requirements, and sandwich a degreased glass fiber cloth in the middle to form a sandwich structure composite.

[0075] The composite is initially heated by a hot plate preheated to 120°C to reduce the resin viscosity to a suitable wetting range, and then enters a pressure system consisting of four pairs of iron rollers.

[0076] Step S9: Cut the obtained prepreg reinforced with fiberglass cloth, then lay one piece of the prepreg reinforced with fiberglass cloth in a mold at 150°C, and then place the high-strength, lightweight product obtained in step S2 into the mold. Then, lay another piece of prepreg reinforced with fiberglass cloth on the top surface of the high-strength, lightweight product obtained in step S2, and then close the mold and cure it. After molding, open the mold, take out the product, and obtain a high-strength, lightweight window base.

[0077] In summary, the beneficial effects of this invention are:

[0078] (1) This invention activates a drive system that drives the explosion-proof glass to rotate at high speed. The centrifugal force generated by the high-speed rotation of the explosion-proof glass quickly flings out contaminants such as cutting fluid adhering to the glass, thereby creating a transparent and visible portion. This solves the problem of operators frequently opening and closing the sliding door to observe the processing status due to a film of contaminants adhering to the glass window, thus improving safety.

[0079] (2) The present invention adds a support end integrated with the window base and uses a high-strength lightweight window base instead of the traditional window base made of metal material, so that the drive system can be installed on the positioning end of the support end, so that the window base can be glued and installed on the sliding glass of the CNC equipment, thereby effectively preventing the high humidity air outside from entering the CNC machining equipment and improving the clarity of the rotating window.

[0080] (3) This invention uses a high-strength, lightweight window base instead of a traditional window base made of metal materials, which meets the new performance requirements of low weight and high strength. It is used with bearings with a first end face and a second end face with a spacing L1 less than L2 and L3 less than L2, which makes the support more solid and stable, thereby enabling it to achieve the best comprehensive performance, preventing deformation due to insufficient strength in actual application, maintaining high sealing performance, preventing hot and humid air from entering the CNC, and extending the service life of the sealing cover.

[0081] (4) The hot and humid air inside the CNC machining equipment of the present invention enters the rotary sealing cover. At this time, the hot and humid air enters the sealing groove and flows at high speed in the sealing groove, rushing towards the gap gas between the sealing groove and the sealing clip, and exerting a certain amount of pressure on the sealing clip.

[0082] At this time, compressed air is supplied into the bottom cavity. Under the action of the compressed air, the auxiliary sealing element that lifts the top of the sealing ring moves towards the rotating sealing cover and generates a lifting force on the sealing clip of the auxiliary sealing element. This causes the wedge-shaped fit between the insert and the slot to produce a self-locking effect, maintaining a .mm-level fitting accuracy even under equipment vibration conditions, thereby effectively improving its overall sealing performance. Attached Figure Description

[0083] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the rotating window of the present invention used in a CNC machining center;

[0084] Figure 2 This is a two-dimensional structural schematic diagram of an embodiment of the rotating window of the present invention used in a CNC machining center;

[0085] Figure 3 This is an assembly diagram of the connector and explosion-proof glass of an embodiment of the rotating window for a CNC machining center according to the present invention;

[0086] Figure 4 This is a schematic diagram of the structure of the window base of an embodiment of the rotating window for CNC machining centers according to the present invention;

[0087] Figure 5 This is a schematic diagram of the rotating sealing cover structure of an embodiment of the rotating window of the present invention used in a CNC machining center;

[0088] Figure 6 This is a cross-sectional view of the connector in an embodiment of the rotating window of the present invention for a CNC machining center;

[0089] Figure 7 This is a schematic diagram of the connecting part structure of an embodiment of the rotating window of the present invention used in a CNC machining center;

[0090] Figure 8 For the present invention Figure 6 Enlarged view of the structure at position A in the middle;

[0091] Figure 9 This is an assembly diagram of the rotating sealing cover and sealing groove of an embodiment of the rotating window of the present invention used in a CNC machining center;

[0092] Figure 10 For the present invention Figure 9 Enlarged view of the structure at position C;

[0093] Figure 11 For the present invention Figure 9 Enlarged view of the structure at position B in the middle.

[0094] Figure label:

[0095] 100. Rotate window;

[0096] 10. Window base; 101. Positioning end;

[0097] 102. Sealing groove; 1022. Bottom cavity;

[0098] 103. Support end;

[0099] 104. Elastic seal; 1041. Support foot;

[0100] 105. Auxiliary seal; 1051. Longitudinal end of auxiliary seal; 1052. Insert block; 1053. Sealing clip;

[0101] 20. Power plug;

[0102] 30. Drive motor; 301. Drive shaft;

[0103] 40. Camera system;

[0104] 50. Connector; 501. Connector base; 502. First bearing; 5021. First end face; 5022. Second end face;

[0105] 504, Second Bearing;

[0106] 505, Locking unit; 5051, Serrated block; 5052, Open slot; 5053, Locking clip; 5056, Locking ring;

[0107] 506, Sealing assembly; 5061, Blocking end; 5062, First seal; 5063, Second seal; 5064, Recessed end; 5065, Abutting end; 5066, Longitudinal end; 5067, Lip seal; 5068, Insertion end;

[0108] 60. Explosion-proof glass; 601. Positioning hole;

[0109] 70. Rotary sealing cover; 701. Mounting groove; 702. Slot; 703. Inner wall of the rotary sealing cover; 704. Sealing groove body;

[0110] 80. Fastening connectors. Detailed Implementation

[0111] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to facilitate a thorough understanding of the present invention and to fully convey the inventive concept to those skilled in the art.

[0112] In the description of this specification, the references to terms such as "certain embodiments," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0113] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0114] Example 1

[0115] As is well known, when a rotating window is installed into the mounting hole of the central sliding glass of a CNC machining equipment, an extension fixing arm needs to be installed at the center of the rotating window, and a motor is installed at the end of the fixing arm to drive the rotating window to rotate at high speed. However, when the rotating window rotates at high speed, it compromises the seal between the rotating window and the mounting hole, allowing high-humidity external air to enter the CNC machining equipment. Furthermore, the hot, humid air formed by the evaporation of cutting fluid during CNC machining condenses into water droplets upon contact with the cold surface of the rotating window, adhering to the end face of the rotating window and causing blurring. To solve the above technical problems, refer to... Figure 1-11 As shown, this embodiment provides a rotating window 100 for a CNC machining center.

[0116] It includes a viewing window base 10 and a rotating sealing cover 70 used in conjunction with the viewing window base 10 for sealing connection. An explosion-proof glass 60 is provided between the viewing window base 10 and the rotating sealing cover 70. The explosion-proof glass 60 is driven by the driving system 30 so that the driving system drives the explosion-proof glass 60 to rotate at high speed, thereby generating centrifugal force, throwing out liquid dirt and creating a transparent visible part.

[0117] like Figure 1 and Figure 2 As shown, a camera system 40 is installed on the viewing window base 10. By adding the camera system 40, staff can monitor the internal processing status of the equipment more clearly even when they are not on site.

[0118] Furthermore, the camera system 40 includes a control module (circuit board) 402, and the control module 402 is mounted on the positioning end 101 by means of adhesive or other fixed connection.

[0119] Furthermore, the USB interface of the control module 402 is connected to the camera 401 of the camera system 40, and the interface of the camera 401 is connected to the power plug 20.

[0120] The camera 401 is a dual-lens industrial camera.

[0121] In this embodiment, by activating the drive system 30, the explosion-proof glass 60 is driven to rotate at high speed. The centrifugal force generated by the high-speed rotation of the explosion-proof glass quickly flings away contaminants such as cutting fluid adhering to it, thus creating a transparent viewing area. This solves the problem of operators frequently opening and closing the sliding door to observe the processing status due to a film of contaminants adhering to the glass window, thereby improving safety.

[0122] Furthermore, the viewing window base 10 is adhered and installed on the sliding glass of the CNC equipment.

[0123] Furthermore, the explosion-proof glass 60 is made of high borosilicate high-temperature explosion-proof tempered glass.

[0124] Furthermore, the window base 10 is provided with a support end 103 integrated therewith, and the support end 103 includes a positioning end 101, and the driving system 30 is installed in the positioning end 101 by a fixed connection. The fixed connection can be achieved by means of fastening screws or fastening bolts, etc.

[0125] Furthermore, the drive system 30 is preferably a permanent magnet motor.

[0126] Furthermore, the drive shaft of the drive system 30 is mounted on the explosion-proof glass 60 via a connector 50. The explosion-proof glass 60 has a positioning hole 601, and the connector 50 is provided in the positioning hole 601. During installation, it is only necessary to mount the drive shaft of the drive system 30 onto the connector 50 provided on the explosion-proof glass 60, and fix it by fastening the connector 80.

[0127] In this embodiment, those skilled in the art should understand that by adding a support end 103 integrated with the window base, it is easier to install the drive system on the positioning end of the support end, so that the window base can be glued and installed on the sliding glass of the CNC equipment, thereby effectively preventing high humidity air from entering the CNC machining equipment and improving the clarity of the rotating window.

[0128] Because most existing rotating window bases are made of alloy steel, high-frequency vibrations and impacts occur during CNC machining. Under these conditions, the rotating window, directly adhered to the sliding glass of the CNC machine, will experience stress concentration, leading to cracking of the adhesive layer. While rotating window bases made of lightweight materials may reduce stress concentration to some extent, they are prone to deformation due to insufficient strength. This can create gaps between the window base and the sealing cover, affecting the seal and allowing hot, humid air from inside the CNC machine to enter, thus accelerating the damage to the sealing cover. For solutions to these technical problems, please refer to [link to relevant documentation]. Figure 1-11 As shown,

[0129] The window base 10 adopts a high-strength, lightweight window base instead of traditional metal materials, thus enabling it to meet the requirements of being lightweight while also meeting certain strength requirements.

[0130] A method for forming the base of a rotating viewport for a CNC machining center includes the following steps:

[0131] Step S1: 0.3-0.5 parts of polypropylene (PP), 0.05-0.15 parts of polyurethane (PU), 0.1-0.2 parts of polyvinyl chloride (PVC), 0.1-0.2 parts of polycarbonate (PC), 0.05-0.1 parts of polyamide (PA), and 0.05-0.1 parts of polyethylene (PE) are heated to a molten state and mixed to obtain mixture A;

[0132] Step S2: The obtained mixture A is injected through the injection cylinder, so that the mixture A is transported into the cavity of the mold through the H-shaped runner, so that the mixture A is injection molded in the cavity, and then demolded to obtain a high-strength, lightweight product.

[0133] Step S3: Add various type E epoxy resins, self-extinguishing epoxy resins and o-cresol epoxy resins into an oven and heat to melt at 100°C.

[0134] Step S4: Input the molten material into a high-speed disperser and stir at 1500-2000 rpm for 15-20 minutes to ensure that all components are fully mixed.

[0135] Step S5: Then, cool the fully fused material to below 75°C, add the required latent medium-high temperature curing agent and accelerator in sequence, switch to low speed stirring (300-500 rpm) to avoid introducing too many air bubbles, mix and stir evenly to obtain mixture B;

[0136] Step S6: The obtained mixture is fed into a vacuum degassing machine and treated at a pressure of -0.09 MPa for 30 minutes until no visible bubbles are visible.

[0137] Step S7: Pour the prepared mixture B onto the coating roller preheated to 80°C. By adjusting the roller gap (usually controlled at 0.2-0.5 mm), the mixture B is evenly coated on the surface of the release paper. After cooling by the cooling plate, a layer of PE release film is applied and the film is rolled up.

[0138] Step S8: Cut the prepared adhesive film into two layers according to the process requirements, and sandwich a degreased glass fiber cloth in the middle to form a sandwich structure composite.

[0139] The composite is initially heated by a hot plate preheated to 120°C to reduce the resin viscosity to a suitable wetting range (500-800 cP), and then enters a pressure system consisting of four pairs of iron rollers.

[0140] After the composite is pressed by the last roller, the upper release paper is immediately recycled. At this time, the resin has been evenly penetrated into the deep layer of the glass fiber cloth. Finally, a PE release film is applied and the mixture is wound up to obtain a prepreg with glass fiber cloth as the reinforcement.

[0141] In this embodiment, it should be noted that the roller temperature gradient of the pressurizing system consisting of four pairs of iron rollers is set to 120-100-80-60℃, and the temperature is gradually reduced to avoid sudden solidification of the resin.

[0142] The roller pressure is increased in stages: the initial pressure of 0.5 MPa promotes resin flow, and the final pressure is increased to 2.0 MPa to ensure complete fiber impregnation.

[0143] The traction speed is matched with the resin gelation time, and is usually controlled at 0.5-2 m / min.

[0144] Step S9: Cut the obtained prepreg reinforced with fiberglass cloth, then lay one piece of the prepreg reinforced with fiberglass cloth in a mold at 150°C, and then place the high-strength, lightweight product obtained in step S2 into the mold. Then, lay another piece of prepreg reinforced with fiberglass cloth on the top surface of the high-strength, lightweight product obtained in step S2, and then close the mold and cure it. After molding, open the mold, take out the product, and obtain a high-strength, lightweight window base.

[0145] In this embodiment, it should be noted that an initial pressure of 10 MPa needs to be applied after the mold is closed. During the curing process, a segmented temperature control process is required: the first stage maintains 150℃ / 10 MPa for 30 minutes; the second stage raises the temperature to 180℃ and increases the pressure to 15 MPa, maintaining this for 60 minutes to complete the crosslinking reaction; the final stage lowers the temperature to 120℃ and holds the pressure for 20 minutes to eliminate internal stress. Immediately after mold opening, the product is transferred to an 80℃ oven for post-curing for 2 hours to improve dimensional stability. Special attention must be paid to ensuring that the temperature uniformity of the mold is controlled within ±3℃; otherwise, it may lead to insufficient curing or excessive shrinkage of the product.

[0146] Table 1 compares the performance of different material ratios:

[0147]

[0148] In this embodiment, those skilled in the art should understand that the present invention uses a high-strength, lightweight window base instead of a traditional window base made of metal materials, thereby meeting the new requirements of low weight and high strength, achieving optimal overall performance, preventing deformation due to insufficient strength during practical applications, maintaining high sealing performance, preventing hot and humid air from entering the CNC, and extending the service life of the sealing cover.

[0149] In this embodiment, the addition of a camera system 40 allows staff to monitor the internal processing status of the equipment more clearly even when they are not on-site.

[0150] Furthermore, the drive shaft of the drive system 30 is mounted on the explosion-proof glass 60 via a connector 50. The explosion-proof glass 60 has a positioning hole 601, and the connector 50 is provided in the positioning hole 601. During installation, it is only necessary to mount the drive shaft of the drive system 30 onto the connector 50 provided on the explosion-proof glass 60, and fix it by fastening the connector 80.

[0151] Furthermore, the connector 50 includes a connector base 501, a first bearing 502, and a second bearing 504. Both the first bearing 502 and the second bearing 504 are reverse-enclosed bearings. Specifically, the first bearing and the second bearing are respectively provided with a first end face 5021 and a second end face 5022, and the first end face 5021 and the second end face 5022 are respectively a large end face and a small end face. The distance between the small end faces of the first end face 5021 and the second end face is L1, and the distance between the large end faces of the first end face 5021 and the second end face is L2, and L1 is less than L2.

[0152] The center lines of the two sets of oppositely arranged first end faces 5021 intersect with the center line of the connector to form an intersection point C.

[0153] The center lines of the two sets of oppositely arranged second end faces 5 intersect with the center line of the connector to form an intersection point D.

[0154] The smaller the distance between C and D, the better the overall stability. The distance between C and D is L3, and L3 is less than L2.

[0155] In this embodiment, those skilled in the art should understand that

[0156] §1 = §2cos(ac)

[0157] in

[0158] Where §2 represents the normal deformation of the end face (first end face / second end face);

[0159] m -- the contact load deformation coefficient of the end face (second end face);

[0160] e -- the contact load deformation coefficient of the end face (first end face).

[0161] The above formula can be used to calculate the specific value of the contact deformation of the connector during actual application.

[0162] In this embodiment, those skilled in the art should understand that the present invention uses a high-strength, lightweight window base instead of a traditional window base made of metal materials, and is used in conjunction with bearings having a first end face and a second end face with a spacing L1 less than L2 and L3 less than L2, thereby making the support more solid and stable, and thus extending the overall service life.

[0163] Example 2

[0164] During CNC machining equipment operation, to improve overall stability and prevent insufficient sealing of connecting parts from allowing hot and humid air to enter, which could cause corrosion of internal bearing metal components and the formation of micro-pits, leading to periodic vibrations during use, and accelerating the deformation of the rotating window base, stress concentration can cause the adhesive layer of the rotating window, which is directly attached to the CNC equipment's sliding door glass, to crack. For solutions to these technical problems, please refer to [link to relevant documentation]. Figure 1-11 As shown, a sealing assembly 506 is provided on the outside of the drive shaft 301 and is locked by a locking unit 505. The sealing assembly 506 includes a first sealing element 5062 and a second sealing element 5063.

[0165] The locking unit 505 includes a locking ring 5056, and the locking ring 5056 has an opening groove 5052. The inner wall of the locking ring 5056 is provided with a locking clip 5053 and a serrated clip 5051 integrally formed with the locking clip 5053. The serrated clip 5051, away from the opening groove 5052, extends into the second sealing member 5063 for engagement.

[0166] The locking member 5053, which is away from the opening slot 5052, extends into the first sealing member 5062 to engage.

[0167] In this embodiment, the serrated locking block and the locking clip work together to ensure that the locking ring is subjected to uniform force, preventing the sealing assembly from shifting under axial force. At the same time, the addition of the opening groove 5052 structure facilitates elastic contraction after assembly and enhances the radial clamping force.

[0168] Furthermore, the first sealing member 5062 is formed by multiple bending, and the first sealing member 5062 includes a longitudinal end 5066 and a blocking end 5061.

[0169] When the locking unit is in the locked state, the second sealing member 5063 includes a recessed end 5064 and a bent end, and the blocking end 5061 is in close contact with the recessed end 5064. The abutting end of the second sealing member 5063 is arc-shaped and is in close contact with the longitudinal end 5066, thereby making the bent end of the second sealing member 5063 in close contact with the bent end of the first sealing member, forming a U-shaped sealing member.

[0170] In this embodiment, those skilled in the art should understand that when the locking unit is in a locked state, the bent end of the second sealing member 5063 is in close contact with the bent end of the first sealing member to form a U-shaped sealing member, thereby effectively blocking the penetration of humid and hot air.

[0171] Furthermore, the inner wall of the second sealing member 5063 is provided with a lip seal 5067 integrally formed therewith, and the insertion end 5068 of the lip seal 5067 extends into the first sealing member 5062, thereby achieving a sealed connection.

[0172] Furthermore, the arc-shaped end of the lip seal 5067 is in close contact with the inner wall of the first seal 5062.

[0173] In this embodiment, those skilled in the art should understand that when the pressure increases, the lip seal is deformed by pressure, the contact pressure between the insertion end 5068 and the first seal 5062 increases, forming a self-tightening effect, and since the arc-shaped end of the lip seal 5067 is closely attached to the inner wall of the first seal 5062, a double seal can be formed, significantly reducing the permeability of humid and hot air.

[0174] High-frequency vibration and impact cause deformation of the rotating window base, resulting in a gap between the window base and the sealing cover. This affects the seal, allowing hot and humid air from inside the CNC machine to enter and accelerate damage to the sealing cover. For solutions to these technical problems, please refer to [link to relevant documentation]. Figure 1-11 As shown, the window base 10 has a sealing groove 102 along its circumferential outer wall, and an elastic sealing element 104 is provided in the sealing groove 102.

[0175] 104 is used in conjunction with the mounting groove 701 provided on the rotary sealing cover 70 so that the resilient seal is

[0176] 104 is inserted into the mounting groove 701, and the outer wall of the elastic seal 104 is tightly attached to the inner wall of the mounting groove 701, thereby achieving a sealed connection so that the explosion-proof glass is confined between the window base 10 and the rotating sealing cover 70.

[0177] In this embodiment, the explosion-proof glass is installed between the window base and the rotating sealing cover.

[0178] Furthermore, the radius of the viewing window base is 150mm, the radius of the rotating sealing cover is 175mm, and the radius of the positioning end of the rotating viewing window base 10 is 32.5mm.

[0179] Furthermore, a bottom cavity 1022 is provided between the sealing groove 102 and the bottom end face of the elastic seal 104, and a through hole is provided on the bottom cavity 1022. An air pipe with a control valve is provided in the through hole, and the air pipe is connected to the air supply system so as to deliver compressed air into the bottom cavity 1022.

[0180] Furthermore, the elastic seal 104 includes multiple sets of support feet 1041, so that its whole is arranged in a double arch shape, and the height of the elastic seal 104 is 2.9mm and the width is 3mm.

[0181] In the initial state, the elastic seal is located at the bottom of the sealing groove and in contact with it, and is in a natural, uncompressed state with the rotating sealing cover.

[0182] Furthermore, when in a sealed state, an auxiliary sealing element 105 is provided on the top end face of the elastic sealing element 104 away from the bottom cavity 1022, and the auxiliary sealing element 105 includes an insert block 1052.

[0183] The rotary sealing cover 70 has a slot 702 into which the insert 1052 of the auxiliary sealing member 105 extends and engages.

[0184] The insert 1052 is triangular in shape. When the insert 1052 extends into the slot 702, so that the outer wall of the insert 1052 is in close contact with the inner wall of the slot 702, the longitudinal end 1051 of the auxiliary seal 105 is in close contact with the inner wall 703 of the rotary sealing cover of the slot 702.

[0185] Furthermore, when the insert of the auxiliary seal 105 is tightly fitted with the slot 702 and engaged, the sealing clip 1053 located on the top end face of the auxiliary seal 105 extends into the sealing groove 704 and engages.

[0186] Furthermore, the sealing clip is used in conjunction with the sealing groove so that the outer wall of the sealing clip is tightly fitted with the inner wall of the sealing groove; the sealing clip is hexagonal in shape.

[0187] In this embodiment, those skilled in the art should understand that by opening the control valve on the air pipe, compressed air is delivered into the bottom cavity 1022 through the air delivery system. Under the action of the compressed air, the support feet 1041 press against the inner wall of the sealing groove 102, so that the support feet of the elastic seal located in the sealing groove are in close contact with the two side walls of the sealing groove, providing better support and enabling the elastic seal to withstand higher pressure, thus preventing the elastic seal from failing.

[0188] At the same time, the elastic seal 104 moves toward the slot 702 of the rotating sealing cover 70, and the hexagonal sealing clip 1053 extends into the sealing groove 704, while the insert 1052 extends into the slot 702 so that they fit tightly together.

[0189] If hot and humid air from inside the CNC machining equipment enters the rotary sealing cover, the hot and humid air then enters the sealing groove 704. This hot and humid air flows at high speed within the sealing groove 704 and rushes towards the gap between the sealing groove 704 and the sealing clip 1053, exerting a certain amount of pressure on the sealing clip 1053.

[0190] At this time, compressed air is supplied into the bottom cavity 1022. Under the action of the compressed air, the auxiliary sealing element that lifts the top of the sealing ring moves toward the rotating sealing cover and generates a lifting force on the sealing clip of the auxiliary sealing element. This causes the wedge-shaped fit between the insert and the slot to produce a self-locking effect, maintaining a fitting accuracy of 0.1mm even under equipment vibration conditions, thereby effectively improving its overall sealing performance.

[0191] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A rotating viewing window for a CNC machining center, characterized in that, include, A viewing window base, which is attached to the sliding glass door of the CNC equipment; The viewing window base is made of high-strength, lightweight material. The base of the viewing window is provided with an integrated support end. Furthermore, the supporting end includes a positioning end. A rotating sealing cover used in conjunction with the viewing window base for a sealed connection. An explosion-proof glass is provided between the viewing window base and the rotating sealing cover. Furthermore, the explosion-proof glass is driven by the drive system, which is mounted on the positioning end. Furthermore, the drive shaft of the drive system is connected to the explosion-proof glass via a connector.

2. The rotating viewing window for a CNC machining center according to claim 1, characterized in that, A camera system is mounted on the base of the viewing window, and the camera system includes a control module. Furthermore, the control module is mounted on the positioning end; The control module's USB interface is connected to the camera of the camera system. The camera's interface is connected to a power plug.

3. The rotating viewing window for a CNC machining center according to claim 1, characterized in that, The connector includes a connector base, a first bearing, and a second bearing. The first bearing and the second bearing are respectively provided with a first end face and a second end face. Furthermore, the first end face and the second end face are the large end face and the small end face, respectively. And the distance between the small end faces of the first end face and the second end face is L. The distance between the large end faces of the first end face and the second end face is L, and L is less than L; The center lines of the two sets of oppositely arranged first end faces intersect with the center line of the connector to form an intersection point C. The center lines of the two sets of oppositely arranged second end faces intersect with the center line of the connector to form an intersection point D. The distance between C and D is L, and L is less than L.

4. The rotating viewing window for a CNC machining center according to claim 1, characterized in that, A sealing assembly is provided on the outside of the drive shaft of the drive system. It is also locked by a locking unit. The sealing assembly includes a first seal and a second seal. The locking unit includes a locking ring. Furthermore, the locking ring has an opening groove. Furthermore, the inner wall of the locking ring is provided with a locking clip and a serrated block integrally formed with the locking clip. The serrated block, which is away from the opening groove, extends into the second sealing member for engagement. The locking clip, located away from the opening slot, extends into the first seal to engage.

5. The rotating viewing window for a CNC machining center according to claim 4, characterized in that, The first sealing element is formed by multiple bending processes. The first seal includes a longitudinal end and a blocking end. When the locking unit is in the locked state, the second seal includes a recessed end and a bent end. Furthermore, the end of the retaining element and the recessed end are in close contact. The contact end of the second seal is arc-shaped and fits tightly against the longitudinal end. The bent end of the second seal is in close contact with the bent end of the first seal to form a U-shaped seal.

6. The rotating viewing window for a CNC machining center according to claim 5, characterized in that, The inner wall of the second seal is provided with a lip seal integrally formed therewith. Furthermore, the insertion end of the lip seal extends into the first seal. The arc-shaped end of the lip seal is in close contact with the inner wall of the first seal.

7. The rotating viewing window for a CNC machining center according to claim 6, characterized in that, The viewing window base has a sealing groove along its circumferential outer wall. Furthermore, an elastic sealing element is provided within the sealing groove. Furthermore, the elastic seal is used in conjunction with the mounting groove provided on the rotary sealing cover. So that the elastic seal can be engaged in the mounting groove. Furthermore, the outer wall of the elastic seal is in close contact with the inner wall of the mounting groove, so that the explosion-proof glass is confined between the window base and the rotating sealing cover.

8. The rotating window for a CNC machining center according to claim 7, characterized in that, A bottom cavity is provided between the sealing groove and the bottom end face of the elastic seal. Furthermore, a through hole is provided on the bottom cavity. The resilient seal includes multiple sets of support legs, giving it an overall double-arched shape. The height of the elastic seal is 2.9 mm and the width is 3 mm. An auxiliary seal is provided on the top end face of the elastic seal, which is away from the bottom cavity, and the auxiliary seal includes a plug. The rotary sealing cover has a slot for the insert of the auxiliary sealing element to extend into and engage.

9. The rotating viewing window for a CNC machining center according to claim 8, characterized in that, The insert block is arranged in a triangular shape. When the insert block extends into the slot. When the outer wall of the insert block is in close contact with the inner wall of the slot, Furthermore, the longitudinal end of the auxiliary seal is in close contact with the inner wall of the rotary sealing cover of the slot; When the insert of the auxiliary seal is tightly fitted into the slot, a snap-fit ​​connection is formed. A sealing clip located on the top end face of the auxiliary seal extends into the sealing groove to engage and connect. The sealing clip is used in conjunction with the sealing groove so that the outer wall of the sealing clip is tightly fitted with the inner wall of the sealing groove; The sealing clip is hexagonal in shape.

10. A method for forming the base of a rotating viewport for a CNC machining center, characterized in that, include, Step S1: Polypropylene, polyurethane, polyvinyl chloride (PVC), polycarbonate, polyamide (PA) and polyethylene are heated to a molten state and mixed to obtain mixture A; Step S2: The obtained mixture A is injected through the injection cylinder, so that the mixture A is transported into the cavity of the mold through the H-shaped runner, so that the mixture A is injection molded in the cavity, and then demolded to obtain a high-strength, lightweight product. Step S3: Add various type E epoxy resins, self-extinguishing epoxy resins and o-cresol epoxy resins into an oven and heat to melt at 100°C. Step S4: Input the molten material into a high-speed disperser and stir at 1500-2000 rpm for 15-20 minutes to ensure that all components are fully mixed. Step S5: Then, cool the fully fused material to below 75°C, add the required latent medium-high temperature curing agent and accelerator in sequence, switch to low speed stirring to avoid introducing too many air bubbles, mix and stir evenly to obtain mixture B; Step S6: The obtained mixture is fed into a vacuum degassing machine and treated at a pressure of -0.09 MPa for 30 minutes until no visible bubbles are visible. Step S7: Pour the prepared mixture B onto the coating roller preheated to 80°C. By adjusting the roller gap, the mixture B is evenly coated on the surface of the release paper. After cooling by the cooling plate, a layer of PE release film is applied and the film is rolled up. Step S8: Cut the prepared adhesive film into two layers according to the process requirements, and sandwich a degreased glass fiber cloth in the middle to form a sandwich structure composite. The composite is initially heated by a hot plate preheated to 120°C to reduce the resin viscosity to a suitable wetting range, and then enters a pressure system consisting of four pairs of iron rollers. Step S9: Cut the obtained prepreg reinforced with fiberglass cloth, then lay one piece of the prepreg reinforced with fiberglass cloth in a mold at 150°C, and then place the high-strength, lightweight product obtained in step S2 into the mold. Then, lay another piece of prepreg reinforced with fiberglass cloth on the top surface of the high-strength, lightweight product obtained in step S2, and then close the mold and cure it. After molding, open the mold, take out the product, and obtain a high-strength, lightweight window base.

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