An oil circuit system for a linear module

Abstract

The application discloses an oil circuit system for a linear module, comprising a sliding table and a backflow device, the backflow device is arranged at the end of the sliding table, the sliding table is provided with an oil injection port, the sliding table is provided with an internally threaded hole, the oil injection port is arranged at the side of a bearing table at the top of the sliding table, the bearing table is provided with a main oil circuit above the internally threaded hole and communicated with the oil injection port, the sliding table is provided with a first branch oil circuit at the side of the internally threaded hole and communicated with the main oil circuit, the inner wall of the internally threaded hole is provided with an oil outlet, the sliding table is provided with a second branch oil circuit below the internally threaded hole and communicated with the first branch oil circuit, the sliding table is provided with a first connecting oil circuit and a second connecting oil circuit, the end surface of the backflow device is provided with two oil guide grooves, the two oil guide grooves are respectively communicated with the port of the first connecting oil circuit and the port of the second connecting oil circuit, and one end of the two oil guide grooves is in an open state and respectively arranged in the groove for accommodating the rolling body on the two sides of the backflow device. The oil circuit system is simple in structure and suitable for the sliding table with reduced longitudinal size.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of linear modules, in particular to an oil circuit system for a linear module. BACKGROUND

[0002] In a linear module, the contact between the slider and the guide rail is through a rolling body, replacing sliding friction with rolling friction, thereby reducing the resistance of the slider to linear motion and improving motion accuracy. The return flow device in the linear module guides the rolling body to smoothly turn from the ball groove inside the slider to the groove on the side of the slider (the groove is formed by the semicircular groove on the side of the slider and the semicircular groove on the guide rail), and then re-enter the ball groove inside the slider from the groove on the side of the slider, forming a closed cycle. The number of closed cycles is two, one on each side of the slider. Through this process, the rolling body can continuously move with the slider, ensuring that the slider moves back and forth along the lead screw without interruption.

[0003] In a linear module, the oil circuit (also known as a lubrication channel) on the slider is a key structure that ensures the lubrication effect between the lead screw and the slider, the rolling body and the guide rail, and the return flow device, directly affecting the friction coefficient, wear rate, and service life of the linear module. In existing linear modules, the slider and the lead screw are installed as follows: a mounting hole is provided on the slider, and a nut structure is rotatably provided on the lead screw. The nut structure is fixed in the mounting hole on the slider. When the lead screw rotates, the slider moves back and forth along the lead screw. Since the nut structure is rotatably provided on the lead screw and fixed in the mounting hole of the slider, there is a difference in wall thickness between the mounting hole diameter and the outer diameter of the lead screw. This results in a larger mounting hole diameter on the slider, which in turn results in a larger longitudinal size of the slider. The oil circuit system on this type of slider and the oil circuit on the return flow device are disclosed in Chinese Patent No. CN207740348U, which is hereby incorporated by reference in its entirety. Figures 1 to 3The bearing 26 is installed above the slide 21, the oil inlet hole 211 is located on the side of the bearing platform on the top of the slide 21, the oil outlet hole 212 is located on the end of the slide 21, the oil inlet hole 211 is connected with the oil outlet hole 212 through an oil injection path 213, the flow adjusting knob 215 for adjusting the oil flow cross-sectional area of the oil injection path 213 is arranged on the oil outlet hole 212 of the oil injection path 213, the main oil path connected with the oil inlet hole 211 horizontally penetrates the bearing platform on the top of the slide 21, the oil distribution path slopes downward from the middle of the bearing platform to the end of the slide 21, the oil distribution part 22 (the backflow device) installed on the end of the slide 21 is provided with the oil distribution inlet 221 connected with the oil distribution path, the middle of the oil distribution part 22 is formed with a circular hole for the screw rod 31 to pass through, the oil distribution part 22 is formed with two semicircular oil distribution paths 222 around the circular hole and connected with the oil distribution inlet 221, the two semicircular oil distribution paths 222 are connected with the circular hole through the screw rod distribution port 223, the oil enters the inner edge of the screw rod lubrication ring 23 after passing through the oil distribution inlet 221, the oil distribution path 222 and the screw rod distribution port 223 in sequence, and lubricates the screw rod 31, the bottom of the two semicircular oil distribution paths 222 is respectively formed with a track groove distribution port 224 connected with the oil distribution path 222, the side and the lower part of the track groove distribution port 224 are formed with a ball distribution port 225, the lubricating oil in the track groove distribution port 224 can supply oil for the balls in the ball groove 214 through the ball distribution port 225, the lubricating part 24 is arranged at the bottom of the oil distribution part 22 and connected with the track groove distribution port 224, and the oil in the lubricating part 24 can lubricate the track groove of the linear track. In addition, since the middle and upper part of the oil distribution part 22 is designed with the oil distribution inlet 221 and the oil distribution path 222, the top of the oil distribution part 22 must be fastened on the end of the slide 21 through the two locking parts 251 to ensure the sealing between the oil distribution part 22 and the slide 21, the locking part 251 can lock the locking cover 25, the oil distribution part 22 and the screw rod lubrication ring 23 on the slide 21, so that the magnet for adsorbing the dustproof part of the linear module can only be installed between the two locking parts 251 on the top of the oil distribution part 22, that is, the magnet can only be installed in the mounting cavity 226 above the circular hole on the oil distribution part 22.

[0004] Referring to Figures 1 to 3In order to make the existing slide 21 with a larger longitudinal dimension suitable for application scenarios with smaller space, it is necessary to reduce the overall longitudinal dimension of the slide 21. For example, the screw 31 of the linear module is directly screwed into the internal threaded hole on the slide 21, and the nut structure is eliminated. This can make the aperture of the internal threaded hole on the slide 21 equivalent to the outer diameter of the screw 31 (the aperture of the internal threaded hole is slightly larger than the outer diameter of the screw 31), effectively reducing the longitudinal dimension of the slide 21. At the same time, the thickness of the bearing platform at the top of the slide 21 and the longitudinal dimension of the oil distribution component 22 are also reduced synchronously. This will make it impossible for the main oil circuit and the branch oil circuit at the top of the slide 21 to be set on the bearing platform. If they are still set on the bearing platform at the top of the slide 21, the oiling effect will be very poor. The oil circuit needs to be redesigned, and the structure of the oil distribution component 22 at the corresponding end of the slide 21 also needs to be redesigned. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide an oil circuit system for a linear module.

[0006] According to one aspect of the present invention, an oil circuit system for a linear module is provided, comprising a slide and a returner, wherein the returner is provided at the end of the slide, and an oil filling port is provided on the slide.

[0007] The cam is provided with an inner threaded hole that is threadedly connected to the screw rod of the linear module, and an oil filling port is provided on the side of the supporting platform at the top of the slide, and a main oil circuit above the inner threaded hole is provided in the supporting platform and is connected with the oil filling port, and the slide is provided with a first branch oil circuit that is located on the side of the inner threaded hole and is connected with the main oil circuit, and an oil outlet is provided on the inner wall of the inner threaded hole and is connected with the first branch oil circuit, and the slide is provided with a second branch oil circuit that is located below the inner threaded hole and is connected with the first branch oil circuit. One end of the first connecting oil circuit and one end of the second connecting oil circuit are respectively connected with the second branch oil circuit, and the port at the other end of the first connecting oil circuit is respectively connected with the port of the first connecting oil circuit and the port at the other end of the second connecting oil circuit are both located on the end portion of the slide, and two oil guide grooves are provided on the end surface of the reflux

[0008] In the oil circuit system of the present invention, the screw of the linear module is rotated in the internal threaded hole, and the slide can move back and forth along the screw. When the screw and the rolling element of the linear module need to be lubricated, the lubricating oil enters the main oil circuit through the oil filling port, and the lubricating oil in the main oil circuit flows to the first branch oil circuit, and the lubricating oil in the first branch oil circuit can flow to the screw in the internal threaded hole through the oil outlet to lubricate the screw. At the same time, the lubricating oil in the first branch oil circuit can flow downward to the second branch oil circuit, and the lubricating oil in the second branch oil circuit can flow to an oil guide groove on the reflux device through the first connecting oil circuit, and the lubricating oil in the second branch oil circuit can flow to another oil guide groove on the reflux device through the second connecting oil circuit, and the lubricating oil in the two oil guide grooves can respectively flow through the openings at their ends to the two oil guide grooves of the reflux device. The rolling elements (such as steel balls) in the grooves on both sides of the slide are supplied with oil, thereby lubricating the rolling elements. The oil circuit system of the present invention is suitable for the slide with reduced longitudinal size, and the thickness of the support platform on the top of the slide is also reduced synchronously, which makes it impossible to design an oil circuit above the internal threaded hole to supply oil to the rolling elements in the grooves on both sides of the slide. Instead, a second oil branch circuit below the internal threaded hole is used to supply oil to the rolling elements in the grooves on both sides of the reflux through the "first connecting oil circuit + an oil guide groove on the reflux" and the "second connecting oil circuit + another oil guide groove on the reflux". At the same time, the existing oil circuit design on the reflux is cancelled, and only an oil guide groove connected to the oil circuit on the slide is designed on the reflux. The oil circuit system of the present invention has a simple structure and is suitable for the slide with reduced longitudinal size.

[0009] Furthermore, the main oil circuit, the first branch oil circuit, and the second branch oil circuit are all arranged perpendicular to the axis of the internal threaded hole, and the first connecting oil circuit and the second connecting oil circuit are both arranged parallel to the axis of the internal threaded hole.

[0010] Therefore, this can effectively reduce the flow path length of the lubricating oil and improve the lubrication efficiency.

[0011] Furthermore, there are two oil filling ports, which are respectively located on both sides of the bearing platform at the top of the slide. One end of the main oil circuit is connected to one oil filling port, and the other end of the main oil circuit is connected to the other oil filling port.

[0012] Therefore, oil can be injected through two oil injection ports at the same time to improve the lubrication efficiency of the screw and the rolling elements of the linear module.

[0013] Furthermore, one end of the first branch oil circuit is connected to the main oil circuit, and a port at the other end of the first branch oil circuit is located on the bottom surface of the slide. A detachable first oil plug is provided in the port of the first branch oil circuit.

[0014] Therefore, the first oil plug can be removed regularly to clean the first oil branch path to prevent blockage. The first oil plug can prevent oil leakage and prevent foreign matter from entering the first oil branch path.

[0015] Furthermore, a conducting oil circuit is provided in the slide.

[0016] One end of the conducting oil circuit is connected to the oil outlet, and the port at the other end of the conducting oil circuit is located on the side of the slide. A detachable second oil plug is provided in the port of the conducting oil circuit, and the conducting oil circuit is connected to the first branch oil circuit.

[0017] A port at one end of the second oil branch passage is located at the side of the slide, and a detachable third oil plug is provided in the port of the second oil branch passage.

[0018] Therefore, the second oil plug can be removed regularly to clean the oil conducting circuit and the oil outlet to prevent blockage. The second oil plug can prevent oil leakage and prevent foreign matter from entering the oil conducting circuit. The third oil plug can be removed regularly to clean the second oil branch circuit to prevent blockage. The third oil plug can prevent oil leakage and prevent foreign matter from entering the second oil branch circuit.

[0019] Furthermore, the oil guide groove includes a connected transverse groove and a longitudinal groove, the transverse groove is located above the longitudinal groove, and the two longitudinal grooves are respectively connected to the port of the first connecting oil circuit and the port of the second connecting oil circuit, and the ports of the two transverse grooves close to both sides of the reflux are open and are respectively located in the grooves on both sides of the reflux for accommodating rolling bodies.

[0020] Therefore, in order to adapt to the slide with reduced longitudinal size, the second oil branch path is located below the internal threaded hole. Since a ball groove parallel to the axis of the internal threaded hole is also formed in the slide, the second oil branch path must also be located below the ball groove, resulting in the first connecting oil path and the second connecting oil path on the slide directly connected to the oil guide groove being lower than the height of the ball groove inside the slide. Therefore, the longitudinal groove of the oil guide groove of the present invention can be connected with the first connecting oil path and the second connecting oil path on the slide, and the transverse groove can be kept consistent in height with the grooves on both sides of the flush reflux device, the grooves on the side of the slide, and the ball groove inside the slide, so that the lubricating oil in the oil guide groove can smoothly pass through the openings at the ends of the transverse grooves to supply oil to the rolling elements in the grooves on both sides of the reflux device.

[0021] Furthermore, a connecting oil groove is provided on the end surface of the reflux device, one end of the connecting oil groove is connected to the longitudinal groove of one oil guide groove, and the other end of the connecting oil groove is connected to the longitudinal groove of another oil guide groove.

[0022] Therefore, the lubricating oil in the two oil guide grooves can flow mutually through the connecting oil groove, ensuring uniform oil filling of the rolling elements on both sides of the slide.

[0023] Furthermore, a detachable fourth oil plug is provided in the oil filling port.

[0024] Therefore, the fourth oil plug can be removed regularly to clean the oil filling port to prevent blockage. The fourth oil plug can prevent oil leakage and prevent foreign matter from entering the oil filling port.

[0025] Further, the backflow device is provided with an upwardly open U-shaped groove, and the top of each side wall of the U-shaped groove is provided with a receiving cavity, and a magnet is arranged in the receiving cavity.

[0026] Therefore, in order to adapt to the slide after the reduction in the longitudinal size, the longitudinal size of the backflow device is also reduced synchronously, so that the position of the backflow device for accommodating the lead screw of the linear module is designed as a U-shaped groove with an open top, and the magnet of the linear module for adsorbing the dustproof steel belt cannot be installed directly above the U-shaped groove. Since the backflow device of the present application cancels the existing oil circuit design, the top of the backflow device does not need to be fastened by locking screws to ensure the sealing performance, so the magnet is installed at the top of the two side walls of the U-shaped groove, which can not only solve the demand of the magnetically adsorbed steel belt, but also adapt to the backflow device after the reduction in the longitudinal size.

[0027] Further, the material of the slide is 20CrMo or GCR15.

[0028] Therefore, the material of 20CrMo or GCR15 can ensure the strength and hardness of the slide, and ensure the service life of the slide. In addition, the slide made of 20CrMo or GCR15 has very small noise when the rolling body (such as steel ball) rolls in the ball groove inside the slide, so that the existing plastic sleeve for reducing noise in the ball groove inside the slide can be cancelled. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 For the description attached to the Chinese patent with publication number CN207740348U Figure 2 ;

[0030] Figure 2 For the description attached to the Chinese patent with publication number CN207740348U Figure 4 ;

[0031] Figure 3 For the description attached to the Chinese patent with publication number CN207740348U Figure 5 ;

[0032] Figure 4 It is a structural schematic diagram of an oil circuit system for a linear module of the present application;

[0033] Figure 5 It is a split structure schematic diagram of the slide and the backflow device in the oil circuit system shown in Figure 4 ;

[0034] Figure 6 It is a split structure schematic diagram of the slide and the backflow device in the oil circuit system shown in Figure 4 ;

[0035] Figure 7 It is a split structure schematic diagram of the slide and the backflow device in the oil circuit system shown in Figure 4The structure diagram of the oil circuit system from another perspective is shown in Figure 2;

[0036] Figure 8 The structure diagram of the oil circuit system from another perspective is shown in Figure 2; Figure 7 The structure diagram of the oil circuit system from another perspective is shown in Figure 2;

[0037] Figure 9 The structure diagram of the oil circuit system from another perspective is shown in Figure 2; Figure 4 The structure diagram of the oil circuit system from another perspective is shown in Figure 2;

[0038] Figure 10 The structure diagram of the oil circuit system from another perspective is shown in Figure 2; Figure 4 The structure diagram of the oil circuit system from another perspective is shown in Figure 2;

[0039] Figure 11 The structure diagram of the oil circuit system from another perspective is shown in Figure 2; Figure 4 The structure diagram of the oil circuit system from another perspective is shown in Figure 2;

[0040] Figure 12 The structure diagram of the oil circuit system from another perspective is shown in Figure 2; Figure 11 The structure diagram of the oil circuit system from another perspective is shown in Figure 2;

[0041] Figure 13 The structure diagram of the oil circuit system from another perspective is shown in Figure 2; Figure 4 The structure diagram of the oil circuit system from another perspective is shown in Figure 2;

[0042] Figure 14 The structure diagram of the oil circuit system from another perspective is shown in Figure 2; Figure 7 The structure diagram of the oil circuit system from another perspective is shown in Figure 2;

[0043] Figure 15 The structure diagram of the oil circuit system from another perspective is shown in Figure 2; Figure 14 The structure diagram of the oil circuit system from another perspective is shown in Figure 2; DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0045] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, unless otherwise specified, "multiple" means two or more; it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a communication between the internal parts of two elements.

[0046] See Figures 4 to 15 , an oil circuit system for a linear module, including a slide 1 and a return device 2.

[0047] See Figure 1 There are two reflux devices 2, which are respectively installed at both ends of the slide 1. The two reflux devices 2 and the slide 1 form two closed loops for the movement of the rolling elements. The two reflux devices 2 have the same structure, but only one reflux device 2 is associated with the oil circuit system of the present invention.

[0048] See Figure 4 and Figure 8 An internal threaded hole 100 is formed on the slide 1 and is threadedly connected to the screw rod of the linear module. The screw rod of the linear module is rotated in the internal threaded hole 100, and the slide 1 can move back and forth along the screw rod. Since the screw rod of the linear module is connected to the slide 1 through threads, the aperture of the internal threaded hole 100 of the slide 1 can be made equivalent to the outer diameter of the screw rod (the aperture of the internal threaded hole 100 is slightly larger than the outer diameter of the screw rod of the linear module), and the thickness of the supporting platform 12 on the top of the slide 1 is also reduced synchronously, thereby reducing the overall longitudinal size of the slide 1, so that the slide 1 can be suitable for application scenarios with smaller space.

[0049] See Figures 4 to 8 、 Figures 11 to 13The oil filling port 11 is formed on the side of the supporting platform 12 at the top of the slide 1, and a main oil circuit 13 is formed in the supporting platform 12 and is located above the internal threaded hole 100 and is connected to the oil filling port 11. In this embodiment, there are two oil filling ports 11, and the two oil filling ports 11 are respectively located on both sides of the supporting platform 12 at the top of the slide 1. One end of the main oil circuit 13 is connected to one oil filling port 11, and the other end of the main oil circuit 13 is connected to the other oil filling port 11. A detachable fourth oil plug (not shown) is installed in each of the two oil filling ports 11, such as a rubber plug or a plug body threadedly connected to the oil filling port 11. The fourth oil plug can be removed regularly to clean the inner cavity of the oil filling port 11 to prevent blockage. The fourth oil plug can prevent oil leakage and prevent foreign matter from entering the oil filling port 11. Oil can be injected simultaneously through the two oil filling ports 11 to improve the lubrication efficiency of the screw rod and the rolling element of the linear module.

[0050] See Figures 4 to 8 、 Figures 11 to 13 A first oil branch circuit 14 is formed in the slide 1, and one end of the first oil branch circuit 14 is connected to the main oil circuit 13. The port of the other end of the first oil branch circuit 14 is located on the bottom surface of the slide 1, and the first oil branch circuit 14 is located on the side of the internal threaded hole 100. A detachable first oil plug (not shown) is installed in the port of the first oil branch circuit 14, such as a rubber plug or a plug body threadedly connected to the port of the first oil branch circuit 14. The first oil plug can be removed regularly to clean the inner cavity of the first oil branch circuit 14 to prevent blockage. The first oil plug can prevent oil leakage and prevent foreign matter from entering the first oil branch circuit 14.

[0051] See Figures 4 to 8 、 Figures 11 to 13 An oil outlet 15 is formed on the inner wall of the internal threaded hole 100, and a conducting oil path 19 is also formed in the slide 1. One end of the conducting oil path 19 is connected to the oil outlet 15, and the other end of the conducting oil path 19 is located on the side of the slide 1. A detachable second oil plug (not shown) is installed in the port of the conducting oil path 19, such as a rubber plug or a plug body threadedly connected to the port of the conducting oil path 19. The conducting oil path 19 is connected to the first oil branch path 14, and the oil outlet 15 is connected to the first oil branch path 14 through the conducting oil path 19. The first branch oil circuit 14 is connected, and the second oil plug can be removed regularly to clean the inner cavity of the conducting oil circuit 19 and the oil outlet 15 to prevent blockage. The second oil plug can prevent oil leakage and prevent foreign matter from entering the conducting oil circuit 19; the lubricating oil enters the main oil circuit 13 through the oil filling port 11, and the lubricating oil in the main oil circuit 13 flows into the first branch oil circuit 14. The lubricating oil in the first branch oil circuit 14 can flow through the oil outlet 15 to the screw rod in the internal threaded hole 100 to lubricate the screw rod.

[0052] See Figures 4 to 8 、 Figures 11 to 13A second oil branch passage 16 is formed in the slide 1 and is connected to the first oil branch passage 14 and is located below the internal threaded hole 100. The port at one end of the second oil branch passage 16 is located on the side of the slide 1, and the other end of the second oil branch passage 16 is closed. A removable third oil plug (not shown), such as a rubber plug or a plug body threadedly connected to the port of the second oil branch passage 16, is installed in the port of the second oil branch passage 16 located on the side of the slide 1. The third oil plug can be removed regularly to clean the inner cavity of the second oil branch passage 16 to prevent blockage. The third oil plug can prevent oil leakage and prevent foreign matter from entering the second oil branch passage 16; the lubricating oil in the first oil branch passage 14 can flow downward into the second oil branch passage 16.

[0053] See Figures 4 to 8 、 Figures 11 to 13 A first connecting oil circuit 17 and a second connecting oil circuit 18 are formed in the slide 1. The first connecting oil circuit 17 and the second connecting oil circuit 18 are respectively located on both sides of the slide 1. One end of the first connecting oil circuit 17 is connected to the second branch oil circuit 16, and the port at the other end of the first connecting oil circuit 17 is located on the end of the slide 1. One end of the second connecting oil circuit 18 is connected to the second branch oil circuit 16, and the port at the other end of the second connecting oil circuit 18 is located on the end of the slide 1; the lubricating oil in the second branch oil circuit 16 can flow into the first connecting oil circuit 17 and the second connecting oil circuit 18 respectively.

[0054] See Figure 5 、 Figure 6 、 Figure 9 and Figure 10The backflow device 2 can be installed on the end of the sliding table 1 through a fixing screw 210, the end face of the backflow device 2 is formed with two oil guide grooves 21, the two oil guide grooves 21 are respectively communicated with the ports of the first connecting oil way 17 and the second connecting oil way 18, one end of the two oil guide grooves 21 is in an open state and is respectively located in the first groove 213 for accommodating the rolling body on the two sides of the backflow device 2, specifically: the oil guide groove 21 comprises a transverse groove 211 and a longitudinal groove 212 which are communicated, the transverse groove 211 is located above the longitudinal groove 212, the port of the transverse groove 211 close to the side of the backflow device 2 is in an open state, the bottom end of the longitudinal groove 212 is in a closed state, the two longitudinal grooves 212 are respectively communicated with the ports of the first connecting oil way 17 and the second connecting oil way 18, the ports of the two transverse grooves 211 close to the two sides of the backflow device 2 are respectively located in the first groove 213 for accommodating the rolling body on the two sides of the backflow device 2, in order to adapt to the sliding table 1 with reduced longitudinal dimension, the second oil distribution way 16 is located below the internal thread hole 100, since the sliding table 1 is also formed with two ball grooves 111 which are arranged in parallel with the axis of the internal thread hole 100, therefore the second oil distribution way 16 also needs to be located below the ball grooves 111, thereby causing the first connecting oil way 17 and the second connecting oil way 18 on the sliding table 1 which are directly communicated with the oil guide grooves 21 to be lower than the height of the ball grooves 111 inside the sliding table 1, therefore the longitudinal grooves 212 of the two oil guide grooves 21 of the present application can be respectively communicated with the first connecting oil way 17 and the second connecting oil way 18 on the sliding table 1, the transverse grooves 211 can keep consistent with the height of the second groove 110 on the side of the sliding table 1 and the ball grooves 111 inside the sliding table 1, so that the lubricating oil in the oil guide groove 21 can smoothly flow through the opening of the end of the transverse groove 211 to supply oil for the rolling body in the second groove 110 on the two sides of the sliding table 1, the lubricating oil in the second oil distribution way 16 can flow through the first connecting oil way 17 to the longitudinal groove 212 of one oil guide groove 21 on the backflow device 2, the lubricating oil in the second oil distribution way 16 can flow through the second connecting oil way 18 to the longitudinal groove 212 of the other oil guide groove 21 on the backflow device 2, the lubricating oil in the two oil guide grooves 21 can respectively supply oil for the rolling body (such as steel ball) in the first groove 213 on the two sides of the backflow device 2, the second groove 110 on the two sides of the sliding table 1 through the opening of the end of the transverse groove 211, thereby playing a lubricating effect on the rolling body.

[0055] In other embodiments, a communication oil groove can also be formed on the end face of the backflow device 2, one end of the communication oil groove is communicated with the longitudinal groove 212 of one oil guide groove 21, the other end of the communication oil groove is communicated with the longitudinal groove 212 of the other oil guide groove 21, the lubricating oil in the two oil guide grooves 21 can flow through the communication oil groove, thereby ensuring uniform oil injection for the rolling body on the two sides of the sliding table 1.

[0056] Referring to Figures 4 to 6 , Figure 9 and Figure 10, a U-shaped groove 22 with an upward opening is formed on the return device 2, and a receiving cavity 23 is formed on the top of both side walls of the U-shaped groove 22. A magnet 24 is installed in each receiving cavity 23. In order to adapt to the slide 1 after the longitudinal size is reduced, the longitudinal size of the return device 2 is also reduced synchronously, so the position of the screw rod for accommodating the linear module on the return device 2 is designed to be a U-shaped groove 22 with a top opening. The screw rod of the linear module is inserted into the U-shaped groove 22. The magnet for adsorbing the dust-proof steel belt of the linear module (closed dust-proof linear module) can no longer be installed directly above the U-shaped groove 22. Since the return device 2 of the present invention cancels the existing oil circuit design ( Figure 3 As shown), the top of the return flow device 2 does not need to be tightened with locking screws to ensure sealing, so the two magnets 24 are respectively installed on the top of the two side walls of the U-shaped groove 22, which can not only solve the demand for magnetic steel strips, but also adapt to the return flow device 2 after the longitudinal size is reduced.

[0057] See Figure 9 , a baffle 25 is mounted on the outside of the reflux 2 by two screws 26. Specifically, a first mounting hole 27 is formed in the middle of the reflux 2. The number of the first mounting holes 27 is two. The two first mounting holes 27 are respectively located on both sides of the U-shaped groove 22 of the reflux 2. The baffle 25 is formed with two second mounting holes 28 that are respectively adapted to the two first mounting holes 27. The two second mounting holes 28 are respectively located on both sides of the baffle 25 and their positions correspond to the two first mounting holes 27. The number of the screws 26 is two, and the ends of the two screws 26 are respectively passed through a After a second mounting hole 28 and a first mounting hole 27, the return device 2 can be fixed on the end face of the slide 1 of the linear module. The return device 2 and the baffle 25 can be firmly fixed on the end face of the slide 1 by two screws 26. Since the return device 2 of the present invention cancels the oil circuit design on the existing return device 2, the top of the return device 2 of the present invention does not need to be tightened with locking screws to ensure sealing, so the first mounting hole 27 is set in the middle of the return device 2, and the top of the return device 2, that is, the top of the two side walls of the U-shaped groove 22, provides a position for the installation of the magnet 24.

[0058] See Figure 9 The shape of the baffle 25 is consistent with the shape of the end face of the returner 2. The baffle 25 can cover the outer end face of the returner 2 and the magnet 24 in the accommodating cavity 23. The baffle 25 can prevent the magnet 24 from falling out of the accommodating cavity 23 and prevent foreign matter from entering the returner 2 and the slide 1.

[0059] In this embodiment, the main oil circuit 13, the first branch oil circuit 14, and the second branch oil circuit 16 are all arranged perpendicular to the axis of the internal threaded hole 100, and the first connecting oil circuit 17 and the second connecting oil circuit 18 are all arranged parallel to the axis of the internal threaded hole 100. This design can effectively reduce the flow path length of the lubricating oil and improve the lubrication efficiency.

[0060] In this embodiment, the material of the slide table 1 is 20CrMo or GCR15. The material of 20CrMo or GCR15 can ensure the strength and hardness of the slide table 1, and ensure the service life of the slide table 1. In addition, the slide table 1 with the material of 20CrMo or GCR15 has very small noise when the rolling body (such as steel ball) rolls in the ball groove 111 inside the slide table 1, and the plastic pipe sleeve for reducing noise in the ball groove 111 inside the existing slide table can be cancelled.

[0061] Referring to Figures 4 to 15In the oil circuit system of the present invention, the screw of the linear module is rotated in the internal threaded hole 100 of the slide 1, and the slide 1 can move back and forth along the screw. When the screw and the rolling element of the linear module need to be lubricated, the lubricating oil enters the main oil circuit 13 through the two oil filling ports 11, and the lubricating oil in the main oil circuit 13 flows to the first branch oil circuit 14. The lubricating oil in the first branch oil circuit 14 can flow to the screw in the internal threaded hole 100 through the conducting oil circuit 19 and the oil outlet 15 to lubricate the screw. At the same time, the lubricating oil in the first branch oil circuit 14 can flow downward to the second branch oil circuit 16, and the lubricating oil in the second branch oil circuit 16 can be The lubricating oil flows to an oil guide groove 21 on the reflux device 2 through the first connecting oil path 17, and the lubricating oil in the second branch oil path 16 can flow to another oil guide groove 21 on the reflux device 2 through the second connecting oil path 18. The lubricating oil in the two oil guide grooves 21 can respectively supply oil to the rolling elements (such as steel balls) in the first groove 213 on both sides of the reflux device 2 and the second groove 110 on both sides of the slide 1 through the openings at their ends, thereby playing a role in lubricating the rolling elements. The oil circuit system of the present invention is suitable for the slide 1 with a reduced longitudinal size, and the thickness of the support platform 12 on the top of the slide 1 is also reduced synchronously, resulting in the inability to The oil circuit designed above the hole 100 supplies oil to the rolling elements in the second grooves 110 on both sides of the slide 1, and the second oil branch circuit 16 below the internal threaded hole 100 supplies oil to the rolling elements in the second grooves 110 on both sides of the slide 1 through the "first connecting oil circuit 17 + an oil guide groove 21 on the return device 2" and the "second connecting oil circuit 18 + another oil guide groove 21 on the return device 2". At the same time, in order to adapt to the slide 1 with reduced longitudinal size, the longitudinal size of the return device 2 is also reduced synchronously. The return device 2 cancels the existing oil circuit design, and only designs the first connecting oil circuit 17 and the second connecting oil circuit 21 on the slide 1 on the return device 2. The oil guide groove 21 is connected to the oil circuit 18. In addition, the top of the reflux device 2 of the present invention does not need to be tightened with locking screws to ensure sealing, so the first mounting hole 27 on the reflux device 2 is set in the middle of the reflux device 2. The top of the reflux device 2, that is, the top of the two side walls of the U-shaped groove 22, provides a position for the installation of the magnet 24. Therefore, the two magnets 24 are respectively installed on the top of the two side walls of the U-shaped groove 22, which can not only solve the demand for steel belts in the magnetic linear module, but also adapt to the reflux device 2 with reduced longitudinal size. The oil circuit system of the present invention has a simple structure and is suitable for the slide 1 and the reflux device 2 with reduced longitudinal size.

[0062] The above description is only some embodiments of the present invention, which is intended to illustrate the technical means of the present invention and is not intended to limit the technical scope of the present invention. Those skilled in the art can make obvious improvements to the present invention in combination with existing common knowledge, which all fall within the scope of protection of the present invention.

Claims

1. An oil circuit system for a linear module, comprising a slide and a returner, wherein the returner is provided at the end of the slide, and an oil filling port is provided on the slide, characterized in that: The cam is provided with an inner threaded hole that is threadedly connected to the screw rod of the linear module, and an oil filling port is provided on the side of the supporting platform at the top of the slide platform, and a main oil circuit above the inner threaded hole is provided in the supporting platform and is connected to the oil filling port, and the slide is provided with a first branch oil circuit that is located on the side of the inner threaded hole and is connected to the main oil circuit, and an oil outlet is provided on the inner wall of the inner threaded hole and is connected to the first branch oil circuit, and the slide is provided with a second branch oil circuit that is located below the inner threaded hole and is connected to the first branch oil circuit. One end of the first connecting oil circuit and one end of the second connecting oil circuit are respectively connected to the second branch oil circuit. The port at the other end of the first connecting oil circuit and the port at the other end of the second connecting oil circuit are both located on the end portion of the slide, and two oil guide grooves are provided on the end surface of the reflux device, and the two oil guide grooves are respectively connected to the port of the first connecting oil circuit and the port of the second connecting oil circuit, and one end of the two oil guide grooves are both open and are respectively located in the grooves for accommodating rolling elements on both sides of the reflux device. The slide is also provided with an oil passage. One end of the conducting oil circuit is connected to the oil outlet, and the port at the other end of the conducting oil circuit is located on the side of the slide. A detachable second oil plug is provided in the port of the conducting oil circuit, and the conducting oil circuit is connected to the first branch oil circuit. The port at one end of the second oil branch is located on the side of the slide, and a detachable third oil plug is provided in the port of the second oil branch. The oil guide groove includes a connected transverse groove and a longitudinal groove. The transverse groove is located above the longitudinal groove. The two longitudinal grooves are respectively connected to the port of the first connecting oil circuit and the port of the second connecting oil circuit. The ports of the two transverse grooves close to both sides of the reflux device are open and are respectively located in the grooves on both sides of the reflux device for accommodating rolling elements.

2. The oil circuit system according to claim 1, characterized in that: The main oil circuit, the first branch oil circuit, and the second branch oil circuit are all arranged perpendicular to the axis of the internal threaded hole, and the first connecting oil circuit and the second connecting oil circuit are both arranged parallel to the axis of the internal threaded hole.

3. The oil circuit system according to claim 1, characterized in that: There are two oil filling ports, which are respectively located on both sides of the bearing platform at the top of the slide. One end of the main oil circuit is connected to one oil filling port, and the other end of the main oil circuit is connected to the other oil filling port.

4. The oil circuit system according to claim 1, characterized in that: One end of the first branch oil circuit is connected to the main oil circuit, and the port of the other end of the first branch oil circuit is located on the bottom surface of the slide. A detachable first oil plug is provided in the port of the first branch oil circuit.

5. The oil circuit system according to claim 1, characterized in that: A connecting oil groove is provided on the end surface of the reflux device, one end of the connecting oil groove is connected to the longitudinal groove of one oil guide groove, and the other end of the connecting oil groove is connected to the longitudinal groove of another oil guide groove.

6. The oil circuit system according to claim 3, characterized in that: A detachable fourth oil plug is provided in the oil filling port.

7. The oil circuit system according to claim 1, characterized in that: The reflux device is provided with a U-shaped groove with an opening facing upwards, and the tops of the two side walls of the U-shaped groove are both provided with accommodating cavities, and magnets are arranged in the accommodating cavities.

8. The oil circuit system according to claim 1, characterized in that: The slide is made of 20CrMo or GCR15.

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