Low-resistance sunroof rail and processing equipment thereof

Abstract

The application discloses a low-resistance automobile sunroof guide rail and a processing equipment thereof, relates to the technical field of automobile sunroof guide rail processing, and aims to solve the technical problem that it is difficult for existing drilling equipment to manufacture a specific inclined angle lubricating groove, and comprises a guide rail frame, two main slide rails arranged on the guide rail frame, and a bearing block slidingly matched with the two main slide rails. The integrated self-lubricating system arranged on the guide rail effectively solves the technical problems of large frictional resistance, high running noise, aggravated abrasion and shortened service life of a traditional sunroof guide rail caused by uneven distribution of lubricating grease, easy drying or loss, in the sliding process, the system continuously extrudes the lubricating grease in the extrusion groove through the extrusion block under elastic compression, so that the lubricating grease is uniformly spread on the main sliding surface through the two side flow guide structures, and the other way is to climb to the contact surface of the two side slide rails along the drainage groove with a specific slope, thereby realizing continuous, directional and uniform lubrication of each friction pair.

Description

Technical Field

[0001] This invention relates to the field of automotive sunroof guide rail processing technology, and more specifically, to a low-resistance automotive sunroof guide rail and its processing equipment. Background Technology

[0002] Currently, automotive sunroof guide rails commonly suffer from problems such as high movement resistance and high noise due to lubrication failure. Traditional lubrication methods often rely on initial application or periodic grease addition. However, during long-term use, the grease is prone to loss due to compression, high-temperature drying, or uneven distribution, leading to dry friction or boundary friction between the guide rail and the support block. This not only significantly increases the resistance to opening and closing the sunroof, affecting the smoothness of operation and user experience, but also generates abnormal noise due to accelerated wear, shortening the service life of the guide rail system. Although some structures attempt to set up oil reservoirs or lubrication channels, it is often difficult to achieve a continuous, directional, and uniform supply of grease on multiple sliding surfaces (such as flat guide rails, roller guide rails, and lateral guide rails), especially in effectively delivering grease to the vertical or inclined friction pairs on both sides.

[0003] Complex lubrication structures in guide rails designed to improve lubrication (such as drainage grooves with specific inclination angles) place higher demands on their manufacturing processes. Existing machining methods, when dealing with such grooves with spatial orientation, especially those with slopes, typically require multiple clamping and tool changes or multiple separate machining operations. This is not only inefficient but also makes it difficult to ensure the consistency of groove dimensions, angles, and positions. For example, when machining drainage grooves with continuous slopes, conventional drilling and milling processes cannot simultaneously complete horizontal grooving and vertical forming in a single feed, easily resulting in tool marks, dimensional deviations, and other problems that directly affect the lubrication performance of the guide rail. Therefore, we propose a low-resistance automotive sunroof guide rail and its machining equipment. Summary of the Invention

[0004] One of the objectives of this invention is to provide a low-resistance automotive sunroof guide rail to solve the technical problem that existing drilling equipment is unable to produce lubrication grooves with a specific tilt angle.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a low-resistance car sunroof guide rail and its processing equipment, including a guide rail frame, two main slide rails arranged on the guide rail frame, and a bearing block slidably adapted on the two main slide rails. Each main slide rail includes a roller slide rail, a planar slide rail and a lateral guide rail arranged in parallel along its length direction. The roller slide rail and the lateral guide rail are respectively located on the left and right sides of the planar slide rail, and the bearing block is slidably adapted inside the planar slide rail. A protrusion on the bearing block is slidably adapted inside the lateral guide rail to restrict the lateral degree of freedom of the bearing block perpendicular to the sliding direction. The sliding surface of the bearing block is provided with a limiting groove. The top inner wall of the limiting groove is symmetrically connected with several first springs. The limiting groove is slidably fitted with a pressing block. Under the preload of the first spring, the bottom of the pressing block always tends to elastically press against the sliding surface of the planar slide rail. The bottom contour of the pressing block is adapted to the shape of the pressing groove on the roller slide rail so that it can be embedded therein. The roller slide rail has an extrusion groove on its sliding surface, and a guide structure arranged in a linear array and integrally formed on both sides of the extrusion groove. The guide structure can be an intermittent groove, used to guide and distribute grease. The extrusion groove is adapted to the shape of the extrusion block; Both the roller slide rail and the lateral guide rail have sloping drainage grooves on their sliding surfaces, which are connected to the extrusion grooves. This invention effectively solves the technical problems of high frictional resistance, high operating noise, accelerated wear, and shortened service life caused by uneven grease distribution, easy drying, or loss of grease in traditional sunroof guide rails by incorporating an integrated self-lubricating system on the guide rails. During sliding, the elastically compressed extrusion block continuously extrudes the grease in the extrusion grooves, causing it to spread evenly on the main sliding surface through the two-sided guide structures, and to climb along the sloping drainage grooves to the contact surfaces of the two side slide rails. This achieves continuous, directional, and uniform lubrication of each friction pair, significantly reducing motion resistance and wear, and improving the smoothness, quietness, and durability of the sunroof operation.

[0006] The second objective of this invention is to provide a processing equipment for processing the aforementioned low-resistance automotive sunroof guide rail, comprising a machine tool, a clamping mechanism arranged on the worktable of the machine tool, a hydraulic drive mechanism, and a drilling mechanism. The drilling mechanism includes an arc-shaped slide rail capable of vertical movement, wherein an arc-shaped guide plate with a support column is slidably adapted inside the arc-shaped slide rail. The end of the arc-shaped guide plate is fixedly connected to a limiting plate. A guide plate that can move vertically upward or downward is arranged on one side of the limiting plate. Several driving blocks that can move together or outward are arranged between the limiting plate and the guide plate. Each of the drive blocks is fixedly connected to a fixed plate on the side near the guide plate, and the drive block can drive several fixed plates to gather or unfold. The two end fixing plates are equipped with drill bits that can move vertically upward or downward. When the guide plate moves upward, it can drive the drill bit to move downward. The drill bits installed on the other fixing plates are configured to only rotate. Several drill bits slide in an arc-shaped slide rail through arc-shaped guide plates, causing the drill bit to rotate axially and reciprocate with its cutting end as the center. During drilling, several drill bits unfold, with only the rotating drill bit drilling the planar slide rail. The drill bits at both ends are positioned above the roller slide rail and the lateral guide rail, respectively. After the planar slide rail reaches the required depth, the drill bits converge, and the drill bits at both ends move downwards as the guide plate moves upwards. Combining the lateral and vertical translational trends, a drainage channel with a ramp is formed. This invention, through the design of a special processing equipment with a composite linkage mechanism, effectively solves the technical problems of difficult, inefficient, and inconsistent processing of complex spatial drainage channels (especially channels with precise ramp features) on automotive sunroof guide rails, requiring multiple clamping or tool changes. This equipment uses a multi-drill bit system that can converge and unfold synchronously, combined with a unique transmission design, allowing the drill bits at both ends to converge horizontally while being fed vertically. Thus, in a single clamping and processing cycle, the required drainage channel ramp structure can be directly and accurately formed on both slide rails in one go, greatly ensuring the processing accuracy and consistency of key features, significantly improving production efficiency, and meeting the needs of mass production.

[0007] Preferably, the drilling mechanism further includes two end plates that can move upward or downward. The upper limit rod of the end plate is inserted into the through hole on the support base. The bottom of the support base is symmetrically connected to two first hydraulic rods, and the output end of the first hydraulic rod is fixedly connected to the end plate. A first shaft is fixedly connected below the end plate. An arc-shaped frame is fixedly connected to the bottom of each end plate. An adjusting rod is slidably sleeved between the two arc-shaped frames, and both ends of the adjusting rod pass through the arc-shaped frame. A second hydraulic rod is hinged to the surface of each first shaft, and the output end of the second hydraulic rod is hinged to the end of the adjusting rod.

[0008] Preferably, a horizontal slide rail and a vertical slide rail are fixedly connected to one side of the limiting plate. Several driving blocks are slidably adapted to one side of the horizontal slide rail, and the slider on the guide plate is slidably adapted to the vertical slide rail. A vertical hole is opened on one side of the guide plate, and several inclined holes are symmetrically distributed on one side of the guide plate with the vertical hole as the axis of symmetry. The pins provided on several driving blocks are respectively inserted into the vertical hole and the corresponding inclined hole, so that when the driving blocks move along the horizontal slide rail, they can move in the vertical hole and the inclined hole through the pins, and the several driving blocks can be brought together or unfolded.

[0009] Preferably, a top plate is fixedly connected to one side of the guide plate, and an inclined plate is fixedly connected to the side of the limiting plate near the guide plate. A waist-shaped groove is opened on one side of the two end fixing plates. A limiting sleeve with a bearing is arranged on one side of each fixing plate. The protrusions on two of the limiting sleeves are slidably fitted inside the waist-shaped groove. The remaining limiting sleeves are fixedly connected to the fixing plate. Several drill bits are rotatably fitted inside the limiting sleeves.

[0010] Preferably, each drill bit end is fixedly connected to a universal transmission module, a plurality of first gears are rotatably sleeved on one side of the inclined plate, and the first gears are connected to the universal transmission module for transmission. The plurality of first gears rotate synchronously through a transmission belt. A first motor is installed in the hole on the limiting plate, and the output end of the first motor is connected to one of the first gears through a universal transmission shaft. The universal drive module consists of a cross universal joint and a spline telescopic rod, which provides universal drive for the drill bit and maintains the drive connection and transmits torque when several drill bits are brought together or extended.

[0011] Preferably, the fixing plates at both ends are slidably adapted to the limiting frame on the side away from the drill bit, and the end of the limiting frame is in active contact with the top plate. Each limiting frame has a toothed plate fixedly connected to the inner wall on both sides. Several second gears are rotatably connected to one side of the fixing plates at both ends inside the limiting frame, and the second gears mesh with the toothed plates for transmission.

[0012] Preferably, the two ends of the limiting sleeve are fixedly connected to the protrusions of the movable rod, and a number of second gears are meshed with the tooth grooves on the movable rod.

[0013] Preferably, the hydraulic drive mechanism includes a support base, a track is fixedly connected to the upper surface of the support base along the edge of the groove, two support plates are slidably adapted on the track, and two hydraulic mold rods are fixedly connected to the upper surface of the support base in a symmetrical structure, with the support plates being drivenly connected to the output end of the hydraulic mold rods.

[0014] Preferably, each of the support plates is slidably fitted with a drive rod capable of moving downward or upward, a hydraulic module is fixedly connected to the top of the machine tool, a guide rod is fixedly connected to the output end of the hydraulic module, and the end of the drive rod is slidably sleeved on the surface of the guide rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention effectively solves the technical problems of high frictional resistance, high operating noise, accelerated wear, and shortened service life caused by uneven grease distribution, easy drying or loss, in traditional sunroof guide rails by setting an integrated self-lubricating system on the guide rail. During the sliding process, the system continuously squeezes the grease in the squeezing groove by the elastically compressed extrusion block, so that it is evenly spread on the main sliding surface through the guide structure on both sides, and rises along the drainage groove with a specific slope to the contact surface of the guide rail on both sides. This achieves continuous, directional, and uniform lubrication of each friction pair, significantly reducing motion resistance and wear, and improving the smoothness, quietness, and durability of sunroof operation.

[0016] 2. This invention effectively solves the technical problems of difficult, inefficient, and inconsistent machining of complex spatial drainage channels (especially channels with precise ramp features) on automotive sunroof guide rails, requiring multiple clamping or tool changes, by designing a specialized machining equipment with a composite linkage mechanism. This equipment utilizes a multi-drill system that can synchronously converge and expand, combined with a unique transmission design, allowing the drill bits at both ends to converge horizontally while simultaneously feeding vertically. This enables the required drainage channel ramp structure to be directly and precisely formed on both sides of the guide rails in a single clamping and machining cycle, greatly ensuring the machining accuracy and consistency of key features, significantly improving production efficiency, and meeting the needs of mass production.

[0017] 3. This invention solves the technical problems of traditional processing equipment being unable to complete the processing of drainage channels with sloping features in one go, and requiring multiple processes and operations, resulting in low processing efficiency and poor channel accuracy (such as inconsistent slope angles and poor connectivity between drainage channels and extrusion channels), through a multi-drill linkage mechanism that can be converged or expanded, an adjustable arc-shaped guide structure, and coordinated transmission of horizontal convergence and vertical displacement. The multi-drill can rotate synchronously, completing the initial drilling in the expanded state, achieving hole connection cutting during the convergence process, and the end drills synchronously completing vertical displacement to process the slope. With the help of the angle adjustment mechanism, it can adapt to the processing of drainage channels with different inclination angles, greatly reducing processing steps, improving processing accuracy and efficiency, and ensuring that the slope structure of the drainage channel can effectively guide the flow of grease.

[0018] 4. The composite slide rail structure of the guide rail of this invention and the modular adjustable design of the processing equipment form a synergistic fit, solving the technical problems of poor universality of traditional guide rails and the difficulty of processing equipment to adapt to the processing of guide rails of different specifications (such as drainage channels of different lengths and slope angles). The flow guiding structure and drainage channel of the guide rail can be adjusted according to the size requirements of sunroof guide rails of different car models. The processing equipment adjusts the drill bit position through the hydraulic drive mechanism, adjusts the processing angle through the second hydraulic rod, and adjusts the drilling spacing by the drive block gathering or unfolding. It can adapt to the processing requirements of various specifications of low-resistance sunroof guide rails. At the same time, the clamping mechanism adopts multi-suction cup vacuum clamping, which takes into account the clamping stability and the protection of the guide rail workpiece, reduces the risk of workpiece deformation during processing, and improves the universality of the equipment and the reliability of processing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the processing equipment of the present invention.

[0020] Figure 2 This is a three-dimensional partial structural diagram of the processing equipment of the present invention.

[0021] Figure 3 This is a schematic cross-sectional view of the processing equipment of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the drilling mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the three-dimensional exploded structure of the drilling mechanism of the present invention. Figure 1 .

[0024] Figure 6 This is a schematic diagram of the three-dimensional exploded structure of the drilling mechanism of the present invention. Figure 2 .

[0025] Figure 7 This is a schematic diagram of the three-dimensional exploded structure of the drilling mechanism of the present invention. Figure 3 This is to show the internal structure of the limiting frame.

[0026] Figure 8 This is a schematic cross-sectional view of the guide plate structure of the present invention, to show the drilling range of the drill bit.

[0027] Figure 9 This is a schematic diagram of the drill bit in axial rotation usage state according to the present invention.

[0028] Figure 10 This is a schematic diagram of the automotive sunroof guide rail structure of the present invention.

[0029] Figure 11 This is a three-dimensional enlarged structural diagram of the extrusion groove of the present invention.

[0030] Figure 12 This is a schematic diagram of the cross-sectional structure of the automotive sunroof guide rail of the present invention.

[0031] Figure 13 This is a schematic diagram of the internal structure of the limiting groove of the present invention.

[0032] Figure 14 This is a top view of the extrusion groove structure of the present invention.

[0033] Figure 15 This is a schematic diagram of the cross-sectional structure of the extrusion groove of the present invention.

[0034] Figure 16 This is a schematic cross-sectional view of the pre-processing structure of the guide rail frame of the present invention.

[0035] Explanation of the numbers in the diagram: 1. Guide rail frame; 2. Bearing block; 11. Main slide rail; 111. Roller slide rail; 112. Flat slide rail; 113. Lateral guide rail; 12. Extrusion groove; 13. Drainage groove; 21. Limiting groove; 22. First spring; 23. Extrusion block; 3. Machine tool; 4. Clamping mechanism; 5. Hydraulic drive mechanism; 51. Support base; 52. Rail; 53. Support plate; 54. Hydraulic rod; 55. Drive rod; 56. Hydraulic module; 57. Guide rod; 6. Drilling mechanism; 61. End plate; 62. First hydraulic rod; 63. First shaft; 64. Arc-shaped frame; 65. Adjusting rod; 66. Second hydraulic rod; 67. Arc-shaped slide rail; 68. Arc-shaped guide plate; 69. Limiting plate; 691. Transverse slide rail 692. Vertical slide rail; 610. Drive block; 611. Guide plate; 6111. Vertical hole; 6112. Inclined hole; 6113. Top plate; 612. Inclined plate; 613. Fixing plate; 6131. ​​Waist-shaped groove; 614. Limiting sleeve; 615. Drill bit; 616. Universal transmission module; 617. First gear; 618. First motor; 619. Limiting frame; 6191. Tooth plate; 620. Second gear; 621. Moving rod. Detailed Implementation

[0036] Example 1, such as Figure 10 As shown, the present invention relates to a low-resistance car sunroof guide rail, comprising a guide rail frame 1, two main slide rails 11 arranged on the guide rail frame 1, and a bearing block 2 slidably adapted on the two main slide rails 11.

[0037] Specifically, in combination Figures 11-12 and Figures 14-16 As shown, each main slide rail 11 includes a roller slide rail 111, a flat slide rail 112, and a lateral guide rail 113 arranged in parallel along its length. The roller slide rail 111 and the lateral guide rail 113 are located on the left and right sides of the flat slide rail 112, respectively. The bearing block 2 is slidably adapted to the inside of the flat slide rail 112, and the protrusion on the bearing block 2 is slidably adapted to the inside of the lateral guide rail 113, thereby restricting the lateral degree of freedom of the bearing block 2 in the direction perpendicular to the sliding direction. A limiting groove 21 is opened on the sliding surface of the bearing block 2. Several first springs 22 are fixedly connected to the top inner wall of the limiting groove 21 in a symmetrical structure. A pressing block 23 is slidably adapted inside the limiting groove 21. Under the preload of the first springs 22, the bottom of the pressing block 23 always tends to elastically press against the sliding surface of the flat slide rail 112. The bottom contour of the pressing block 23 is adapted to the shape of the pressing groove 12 on the roller slide rail 111 so that it can be embedded therein.

[0038] Combination Figures 11-12 and Figures 14-16As shown, the sliding surface of the roller slide rail 111 is provided with an extrusion groove 12. A linear array of integrally formed guide structures are arranged on both sides of the extrusion groove 12. These guide structures can be intermittent grooves used to guide and distribute grease. The extrusion groove 12 is adapted to the shape of the extrusion block 23. Both the roller slide rail 111 and the lateral guide rail 113 have ramped drainage grooves 13 on their sliding surfaces, which communicate with the extrusion groove 12. Specifically, when the bearing block 2 slides along the main slide rail 11, under the continuous action of the first spring 22, the bottom of the extrusion block 23 is always pressed into the extrusion groove 12 on the roller slide rail 111, thus distributing the grease within the groove. The grease is extruded and splits into two streams: one stream is directly spread onto the sliding surface of the planar slide rail 112 by the guide structures on both sides of the extrusion groove 12; the other stream is pressed into the flow groove 13 connected to it. Because the bottom of the flow groove 13 is designed to be inclined upwards towards the sliding surfaces of the roller slide rail 111 and the lateral guide rail 113, the grease rises along the flow groove 13 and is spread onto the sliding contact surfaces of the roller slide rail 111 and the lateral guide rail 113 under capillary action and flow pressure. The extrusion groove 12 is pre-filled with solid or semi-solid grease. When machining the extrusion groove 12, the guide rail frame 1 needs to be pre-treated (e.g., ...). Figure 16 As shown, this enables the machining components to drill and cut the roller slide rail 111, the flat slide rail 112, and the lateral guide rail 113.

[0039] This invention integrates a composite structure of roller slide rail 111, flat slide rail 112, and lateral guide rail 113 into the main guide rail 11, and combines it with a pre-tensioned spring-loaded extrusion block 23 and a built-in grease extrusion groove 12 to construct an automatic lubrication distribution system. This solves the technical problems of traditional sunroof guide rails that rely on manual grease application, resulting in high sliding resistance, jamming noise, and severe wear due to easy lubrication loss. In this design, when the support block 2 slides, the extrusion block 23 can automatically extrude grease, and the grease is accurately distributed to each sliding contact surface through the guide structure and the drainage groove 13, achieving long-lasting lubrication throughout the entire stroke and significantly reducing sliding resistance. At the same time, the cooperation between the lateral guide rail 113 and the extrusion block 23 restricts the lateral freedom of the support block 2, improves sliding stability, and extends the service life of the guide rail and the support block 2.

[0040] Example 2, as follows Figure 1 As shown, the present invention provides a processing equipment for a low-resistance automotive sunroof guide rail, including a machine tool 3, a clamping mechanism 4 arranged on a worktable on the machine tool 3, a hydraulic drive mechanism 5, and a drilling mechanism 6; wherein, the clamping mechanism 4 is a conventional multi-suction cup vacuum clamping structure, which is composed of vacuum suction cups, suction cup brackets, and vacuum generation and piping systems, etc., which will not be described in detail here, and is used to fix the automotive sunroof guide rail to be processed.

[0041] like Figure 2 and Figure 4 As shown, in this embodiment, the hydraulic drive mechanism 5 includes a support base 51. A track 52 is fixedly connected to the upper surface of the support base 51 along the edge of the groove. Two support plates 53 are slidably adapted on the track 52. Two hydraulic rods 54 are fixedly connected to the upper surface of the support base 51 in a symmetrical structure. The support plates 53 are driven to the output end of the hydraulic rods 54. Each support plate 53 is slidably adapted to a drive rod 55 that can move downward or upward. A hydraulic module 56 is fixedly connected to the top of the machine tool 3. A guide rod 57 is fixedly connected to the output end of the hydraulic module 56. The end of the drive rod 55 is slidably sleeved on the surface of the guide rod 57. Specifically, by working, the hydraulic module 56 drives the guide rod 57 to move, causing the drive rod 55 to drive the drilling mechanism 6 to move upward or downward, adjusting the position of the drilling mechanism 6, and applying vertical downward pressure to the sunroof guide rail.

[0042] like Figures 3-9As shown, in this embodiment, the drilling mechanism 6 includes two end plates 61 that can move upward or downward. An upper limit rod is inserted into a through hole in the support base 51 on each end plate 61. Two first hydraulic rods 62 are symmetrically connected to the bottom of the support base 51, and the output ends of the first hydraulic rods 62 are fixedly connected to the end plates 61. A first shaft 63 is fixedly connected below each end plate 61. An arc-shaped frame 64 is fixedly connected to the bottom of each end plate 61. An adjusting rod 65 is slidably sleeved between the two arc-shaped frames 64, and both ends of the adjusting rod 65 pass through the arc-shaped frames 64. A second hydraulic rod 66 is hinged to the surface of each first shaft 63, and the output end of the second hydraulic rod 66 is hinged to the end of the adjusting rod 65. When the second hydraulic rod 66 is working, its output end extends and retracts. The adjusting rod 65 can adjust the angle of the drilling mechanism 6 along the sliding path of the arc frame 64, thereby realizing the contour machining of the sloping drainage channel 13 by the drill bit 615. The output end of the drive rod 55 is fixedly connected to the arc slide rail 67. The arc slide rail 67 is internally fitted with an arc guide plate 68 with a support column. The support column on the arc guide plate 68 is fixedly connected to the adjusting rod 65. The end of the support rod is fixedly connected to the limiting plate 69. A horizontal slide rail 691 and a vertical slide rail 692 are fixedly connected to one side of the limiting plate 69. A number of drive blocks 610 that can be gathered or unfolded are slidably fitted on one side of the horizontal slide rail 691. A guide plate 611 is arranged on one side of the drive blocks 610. The slider on the guide plate 611 is slidably fitted on the vertical slide rail 692. The guide plate 611 is open on one side. A vertical hole 6111 is provided. A number of inclined holes 6112 are symmetrically distributed on one side of the guide plate 611 with the vertical hole 6111 as the axis of symmetry. Pins on several driving blocks 610 are respectively inserted into the vertical hole 6111 and the corresponding inclined hole 6112. This allows the driving blocks 610 to converge or expand by moving within the vertical hole 6111 and inclined hole 6112 via the pins as they move along the transverse slide rail 691. A top plate 6113 is fixedly connected to one side of the guide plate 611. An inclined plate 612 is fixedly connected to the side of the limiting plate 69 near the guide plate 611. A fixing plate 613 is fixedly connected to one side of each driving block 610. The fixing plates 613 at both ends have a waist-shaped groove 6131 on one side. Each fixing plate 613... On one side of plate 613, there are limit sleeves 614 with bearings. Two of the limit sleeves 614 have protrusions that slide inside the waist-shaped groove 6131. ​​The remaining limit sleeves 614 are fixedly connected to the fixed plate 613. A drill bit 615 is rotatably fitted inside each limit sleeve 614. Each drill bit 615 has a universal drive module 616 fixedly connected to its end. The universal drive module 616 consists of a cross universal shaft and a spline telescopic rod, which is used to realize the universal drive of the drill bit 615. When several drill bits 615 are brought together or extended, the drive connection is always maintained and torque is transmitted. Several first gears 617 are rotatably fitted on one side of the inclined plate 612. The first gears 617 are drively connected to the universal drive module 616. The several first gears 617 rotate synchronously through a drive belt.A first motor 618 is installed in the hole of the limiting plate 69, and the output end of the first motor 618 is connected to one of the first gears 617 via a universal drive shaft. The two end fixing plates 613 are slidably fitted with limiting frames 619 on the side away from the drill bit 615, and the ends of the limiting frames 619 are in active contact with the top plate 6113. Tooth plates 6191 are fixedly connected to the inner walls on both sides of each limiting frame 619. Several second gears 620 are rotatably connected to one side of the two end fixing plates 613 inside the limiting frame 619, and the second gears 620 mesh with the tooth plates 6191. Moving rods 621 are fixedly connected to the protrusions on the two end limiting sleeves 614, and the several second gears 620 mesh with the tooth grooves on the moving rods 621. When several drill bits 615 converge, the guide plate 611 drives the top plate 6113 to move upward, thereby driving the limiting frame 619 to move upward. At this time, due to the meshing transmission between the toothed plate 6191 and the second gear 620, and the meshing transmission between the second gear 620 and the moving rod 621, the drill bits 615 at both ends move downwards. During the convergence process, this downward movement creates a sloping drainage groove 13. This structure ensures that the end drill bits 615 generate a vertical downward displacement while horizontally converging, thus machining the sloping feature of the drainage groove 13 in one operation. Specifically, during drilling, when several drill bits 615 reach a certain depth, they move from an unfolded state to a converged state, adjusted by the hydraulic drive mechanism 5, forming a complete groove. Then, when the second hydraulic rod 66 operates, its output end extends and retracts, allowing the adjusting rod 65 to adjust the angle of the drill bits 615 along the sliding path of the arc-shaped frame 64. Several drill bits 615 rotate axially around the endpoint of the drill bit 615 rotatably connected inside the limiting sleeve 614.

[0043] This invention addresses the technical problems of traditional processing equipment, such as low processing efficiency and poor groove accuracy (e.g., inconsistent slope angles and poor connectivity between the drainage groove 13 and the extrusion groove 12), caused by the inability to complete the processing of the drainage groove 13 with sloping features in one go and the need for multiple processes in multiple operations, through a multi-drill bit 615 linkage mechanism that can be converged or expanded, an angle-adjustable arc-shaped guide structure, and coordinated transmission of horizontal convergence and vertical displacement. The multi-drill bit 615 can rotate synchronously, completing the initial drilling in the expanded state and achieving hole connection cutting during the convergence process. The end drill bit 615 synchronously completes vertical displacement to process the slope. With the help of the angle adjustment mechanism, it can adapt to the processing of drainage grooves 13 with different inclination angles, greatly reducing the processing steps, improving processing accuracy and efficiency, and ensuring that the slope structure of the drainage groove 13 can effectively guide the flow of lubricating grease.

[0044] The composite slide rail structure of the guide rail of this invention and the modular adjustable design of the processing equipment form a synergistic fit to solve the technical problems of poor universality of traditional guide rails and difficulty in processing equipment to adapt to the processing of guide rails of different specifications (such as different lengths and different slope angles of the drainage groove 13). The flow guiding structure and drainage groove 13 of the guide rail can be adjusted according to the size requirements of sunroof guide rails of different car models. The processing equipment adjusts the position of the drill bit 615 through the hydraulic drive mechanism 5, adjusts the processing angle through the second hydraulic rod 66, and adjusts the drilling spacing by gathering or unfolding the drive block 610. It can adapt to the processing requirements of various specifications of low resistance sunroof guide rails. At the same time, the clamping mechanism 4 adopts multi-suction cup vacuum clamping, which takes into account the clamping stability and the protection of the guide rail workpiece, reduces the risk of workpiece deformation during processing, and improves the universality of the equipment and the reliability of processing.

[0045] Working Principle: This embodiment provides a low-resistance automotive sunroof guide rail and its processing equipment. During processing, the automotive sunroof guide rail is first clamped and fixed by the clamping mechanism 4. Then, the support plate 53 is moved by the hydraulic mold rod 54 to adjust the position of several drill bits 615. Then, the hydraulic module 56 moves the drive guide rod 57 to apply force to the drill bits 615. At the same time, the first gear 617 is driven to rotate by the external circuit mechanism. The transmission belt can drive the other first gears 617 to rotate, and the universal transmission module can also be used to achieve this. 616 drives the drill bit 615 to rotate. First, an external control system moves the guide plate 611 downwards. Several drive blocks 610 slide on the vertical hole 6111 and the inclined hole 6112 respectively via pins, allowing the drive blocks 610 to unfold. The fixed drill bits 615 then drill holes in the planar slide rail 112. The drill bits 615 at both ends (slidable) contact the sliding surfaces of the roller slide rail 111 and the lateral guide rail 113 after drilling is completed. At this point, the external control system causes the guide plate 611 to move upward, and the several driving blocks 610 tend to converge towards the center. Therefore, the several drill bits 615 in the fixed state cut the inner wall of the drilled hole during the convergence process, making the several drill holes connected. During the convergence process, the guide plate 611 moves upward, driving the top plate 6113. The top plate 6113 applies a force to the end of the limiting frame 619, and the second gear 620 meshes with the toothed plate 6191 for transmission, which is driven by the tooth groove on the moving rod 621. The transmission causes the moving rod 621 to move downwards and drive the limiting sleeve 614 and the drill bit 615 to move. At the same time, the drill bits 615 at both ends converge towards the middle. When drilling holes in the sliding surfaces of the lateral guide rail 113 and the roller slide rail 111, a flow channel 13 with a slope can be made. When several drill bits 615 are completely converged, the hole drilled by the drill bit 615 in the middle is not connected to the other holes. At this time, the converged drill bits 615 can be driven to translate by the hydraulic mold rod 54 to cut the inner wall of the unconnected hole.

[0046] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A low-resistance car sunroof guide rail, comprising a guide rail frame (1), two main slide rails (11) arranged on the guide rail frame (1), and a bearing block (2) slidably adapted on the two main slide rails (11), characterized in that, Each of the main slide rails (11) includes a roller slide rail (111), a flat slide rail (112), and a lateral guide rail (113) arranged in parallel along its length. The roller slide rail (111) and the lateral guide rail (113) are located on the left and right sides of the flat slide rail (112), respectively. The bearing block (2) is slidably adapted to the inside of the flat slide rail (112), and the protrusion on the bearing block (2) is slidably adapted to the inside of the lateral guide rail (113) to restrict the lateral degree of freedom of the bearing block (2) in the direction perpendicular to the sliding direction. The sliding surface of the bearing block (2) is provided with a limiting groove (21). The inner wall of the top of the limiting groove (21) is symmetrically connected with several first springs (22). The limiting groove (21) is slidably fitted with a pressing block (23). Under the pre-tightening force of the first springs (22), the bottom of the pressing block (23) always tends to elastically press against the sliding surface of the planar slide rail (112). The bottom contour of the pressing block (23) is adapted to the shape of the pressing groove (12) on the roller slide rail (111) so that it can be embedded therein. The roller slide rail (111) has a squeezing groove (12) on its sliding surface. A guide structure is arranged in a linear array and integrally formed on both sides of the squeezing groove (12). The guide structure can be an intermittent groove for guiding and distributing grease. The extrusion groove (12) is adapted to the shape of the extrusion block (23); Both the roller slide rail (111) and the lateral guide rail (113) have a flow channel (13) with a slope on their sliding surfaces, and the flow channel (13) is connected to the extrusion groove (12).

2. A processing device for processing the low-resistance automotive sunroof guide rail as described in claim 1, comprising a machine tool (3), a clamping mechanism (4) arranged on a worktable on the machine tool (3), a hydraulic drive mechanism (5), and a drilling mechanism (6), characterized in that, The drilling mechanism (6) includes an arc-shaped slide rail (67) that can move vertically, and the arc-shaped slide rail (67) is internally adapted to an arc-shaped guide plate (68) with a support. The end of the arc-shaped guide plate (68) is fixedly connected to a limiting plate (69). A guide plate (611) capable of moving vertically upward or downward is arranged on one side of the limiting plate (69). A number of driving blocks (610) capable of converging or unfolding are arranged between the limiting plate (69) and the guide plate (611). Each of the drive blocks (610) has a fixed plate (613) fixedly connected to the side near the guide plate (611). The drive blocks (610) can drive several fixed plates (613) to gather or unfold. The two end fixing plates (613) are equipped with drill bits (615) that can move vertically upward or downward. When the guide plate (611) moves upward, it can drive the drill bits (615) to move downward. The drill bits (615) installed on the other fixing plates (613) are configured to only rotate. Several drill bits (615) slide in the arc-shaped slide rail (67) through the arc-shaped guide plate (68), causing the drill bits (615) to rotate axially and reciprocally with their cutting ends as the center. During drilling, several drill bits (615) are unfolded, and only the rotating drill bits (615) drill holes in the planar slide rail (112). The drill bits (615) at both ends are located above the roller slide rail (111) and the lateral guide rail (113), respectively. After the hole depth of the planar slide rail (112) reaches the standard, several drill bits (615) converge. The drill bits (615) at both ends move down as the guide plate (611) moves up. Combining the lateral convergence and vertical translation trends, a drainage channel (13) with a slope is produced.

3. A processing equipment for processing the low-resistance automotive sunroof guide rail as described in claim 2, characterized in that, The drilling mechanism (6) also includes two end plates (61) that can move up or down. The upper limit rod of the end plate (61) is inserted into the through hole of the support base (51). The bottom of the support base (51) is symmetrically connected to two first hydraulic rods (62), and the output end of the first hydraulic rod (62) is fixedly connected to the end plate (61). The bottom of the end plate (61) is fixedly connected to a first shaft (63). The bottom of each end plate (61) is fixedly connected to an arc frame (64). An adjusting rod (65) is slidably sleeved between the two arc frames (64), and the two ends of the adjusting rod (65) pass through the arc frame (64) respectively. The surface of each first shaft (63) is hinged to a second hydraulic rod (66), and the output end of the second hydraulic rod (66) is hinged to the end of the adjusting rod (65).

4. A processing equipment for processing the low-resistance automotive sunroof guide rail as described in claim 3, characterized in that, The limiting plate (69) is fixedly connected to a horizontal slide rail (691) and a vertical slide rail (692) on one side. Several driving blocks (610) are slidably adapted to one side of the horizontal slide rail (691). The slider on the guide plate (611) is slidably adapted to the vertical slide rail (692). A vertical hole (6111) is opened on one side of the guide plate (611). Several inclined holes (6112) are symmetrically distributed on one side of the guide plate (611) with the vertical hole (6111) as the axis of symmetry. The pins provided on several driving blocks (610) are respectively inserted into the vertical hole (6111) and the corresponding inclined hole (6112), so that when the driving block (610) moves along the horizontal slide rail (691), it moves in the vertical hole (6111) and the inclined hole (6112) through the pin, and the several driving blocks (610) can be gathered or unfolded.

5. A processing equipment for processing the low-resistance automotive sunroof guide rail as described in claim 4, characterized in that, A top plate (6113) is fixedly connected to one side of the guide plate (611), and an inclined plate (612) is fixedly connected to the side of the limiting plate (69) near the guide plate (611). A waist-shaped groove (6131) is opened on one side of the two end fixing plates (613). A limiting sleeve (614) with a bearing is arranged on one side of each fixing plate (613). The protrusions on two of the limiting sleeves (614) are slidably fitted inside the waist-shaped groove (6131), and the remaining limiting sleeves (614) are fixedly connected to the fixing plate (613). Several drill bits (615) are rotatably fitted inside the limiting sleeves (614).

6. A processing equipment for processing the low-resistance automotive sunroof guide rail as described in claim 5, characterized in that, Each drill bit (615) is fixedly connected to a universal drive module (616) at its end. A plurality of first gears (617) are rotatably sleeved on one side of the inclined plate (612), and the first gears (617) are connected to the universal drive module (616) in a drive connection. The plurality of first gears (617) rotate synchronously through a drive belt. A first motor (618) is installed in the hole on the limiting plate (69), and the output end of the first motor (618) is connected to one of the first gears (617) in a drive connection through a universal drive shaft. The universal drive module (616) consists of a cross universal shaft and a spline telescopic rod, which provides universal drive for the drill bit (615) and maintains the drive connection and transmits torque when several drill bits (615) are gathered or unfolded.

7. A processing apparatus for processing the low-resistance automotive sunroof guide rail as described in claim 6, characterized in that, Both ends of the fixed plate (613) are slidably adapted to the limiting frame (619) on the side away from the drill bit (615), and the end of the limiting frame (619) is in active contact with the top plate (6113). Each of the two sides of the limiting frame (619) is fixedly connected to the toothed plate (6191). A number of second gears (620) are rotatably connected to one side of the fixed plate (613) located inside the limiting frame (619), and the second gears (620) mesh with the toothed plate (6191) for transmission.

8. A processing apparatus for processing the low-resistance automotive sunroof guide rail as described in claim 7, characterized in that, The two end limiting sleeves (614) are fixedly connected to the protrusions of the moving rods (621), and a number of second gears (620) are meshed with the tooth grooves on the moving rods (621).

9. A processing equipment for processing the low-resistance automotive sunroof guide rail as described in claim 8, characterized in that, The hydraulic drive mechanism (5) includes a support base (51), a track (52) is fixedly connected to the upper surface of the support base (51) along the edge of the slot, two support plates (53) are slidably adapted on the track (52), and two hydraulic mold rods (54) are fixedly connected to the upper surface of the support base (51) in a symmetrical structure, and the support plates (53) are drivenly connected to the output end of the hydraulic mold rods (54).

10. A processing equipment for processing the low-resistance automotive sunroof guide rail as described in claim 9, characterized in that, Each of the support plates (53) is slidably fitted with a drive rod (55) that can move downward or upward. A hydraulic module (56) is fixedly connected to the top of the machine tool (3). A guide rod (57) is fixedly connected to the output end of the hydraulic module (56), and the end of the drive rod (55) is slidably sleeved on the surface of the guide rod (57).

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