High-precision double-lubrication lead screw

Abstract

The utility model relates to the technical field of double-lubrication lead screws, in particular to a high-precision double-lubrication lead screw which comprises a first lead screw body and a guiding device, a second lead screw body is arranged on one side of the first lead screw body, the surface of the first lead screw body is in threaded connection with a moving table, and the guiding device is arranged on the surface of the first lead screw body and comprises an installation frame. The lower surface of the mounting frame is fixedly connected with a guide rail, the surface of the guide rail is slidably connected with a clamping sleeve, the upper surface of the clamping sleeve is fixedly connected with a support, the side, away from the clamping sleeve, of the support is fixedly connected with the moving table, one side of the clamping sleeve is fixedly connected with a bent rod, one side of the bent rod is provided with a round hole, and the bent rod is arranged in an L shape. According to the utility model, the round wheel and the guide rail are matched with each other, so that the moving table always moves in parallel along the set track in the moving process, the unstable conditions of deviation, shaking or inclination and the like of the moving table in the moving process are effectively reduced, and the running stability of equipment is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of double-lubricated screws, in particular to a high-precision double-lubricated screw. Background Art

[0002] The double-lubricated lead screw is a high-performance transmission component that adopts a unique double-lubrication design to effectively reduce friction and wear, and improve transmission efficiency and precision. The double-lubricated lead screw is usually composed of a lead screw, a nut, balls and a lubrication system. During operation, two different lubricants work together to ensure that the lead screw and the nut always maintain a good lubrication state. It has the characteristics of high rigidity, high precision, and high speed. It is widely used in CNC machine tools, automation equipment and other fields, providing strong guarantees for the stable operation and high-precision processing of the equipment.

[0003] The prior art includes a utility model disclosed in publication number CN203560380U. The present utility model relates to the field of screws, specifically a screw comprising a rod body, wherein the side walls of the rod body are provided with multiple sections of evenly distributed external threads, the middle section of the rod external threads is provided with a groove, a reset spring is fixedly mounted at the bottom of the groove, and a graphite block is fixedly connected to the upper end of the spring. The present utility model has a simple structure, prevents the screw from getting stuck, and is clean and environmentally friendly to the machine tool. However, during use, the screw is prone to shaking. If the screw is difficult to accurately maintain parallel movement, the positioning accuracy of the moving parts will directly decrease. For example, in CNC machine tools, the position accuracy of the tool is crucial to the dimensional accuracy and surface quality of the machined parts. When the screw has a parallelism deviation, the tool will deviate from the expected trajectory during movement, causing the size of the machined parts to deviate and fail to achieve the accuracy required by the design.

[0004] In order to solve the problem that the lead screw is easy to shake when moving, if the lead screw is difficult to maintain accurate parallel movement, it will directly lead to a decrease in the positioning accuracy of the moving parts. The existing technology uses a method of replacing the lead screw to deal with it, but it increases the user's economic expenditure and causes inconvenience in using the equipment. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art that the screw is easy to shake when moving. If the screw is difficult to accurately maintain parallel movement, it will directly lead to a decrease in the positioning accuracy of the moving parts. A high-precision double-lubricated screw is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a high-precision double-lubricated screw, comprising a first screw and a guiding device, a second screw is provided on one side of the first screw, the surface of the first screw is threadedly connected to a movable platform, the guiding device is provided on the surface of the first screw, and the guiding device includes a mounting bracket, the mounting bracket is rotatably connected to the first screw, the lower surface of the mounting bracket is fixedly connected to a guide rail, the surface of the guide rail is slidably connected to a clamping sleeve, the upper surface of the clamping sleeve is fixedly connected to a bracket, and the side of the bracket away from the clamping sleeve is fixedly connected to the movable platform. By setting the guiding device, the circular wheel and the guide rail cooperate with each other, so that the movable platform always moves parallel to the predetermined track during the movement process, which effectively reduces the instability such as offset, shaking or tilting of the movable platform during the movement process, and ensures the smooth operation of the equipment.

[0007] Preferably, a bent rod is fixedly connected to one side of the ferrule, and a round hole is opened on one side of the bent rod. By setting the bent rod, the bent rod can be used as a special guiding structure to work in conjunction with the circular wheel, ferrule and other components. During the movement of the movable platform, the bent rod can guide the rolling direction of the circular wheel, further ensuring that the ferrule moves parallel to the guide rail.

[0008] Preferably, the bent rod is arranged in an "L" shape, and the circular hole on the surface of the bent rod is rotatably connected to a circular wheel. By setting the circular wheel, when the mobile platform moves, the bracket pushes the circular wheel to rotate. This rotational motion can effectively convert the possible unstable linear motion of the mobile platform into the smooth circular motion of the circular wheel. Compared with direct linear friction, the direction of the friction force of the circular motion changes continuously, making the entire movement process smoother.

[0009] Preferably, there are two bent rods, and the two bent rods are arranged in a mirror-symmetrical manner.

[0010] Preferably, a splicing device is provided on one side of the first screw rod, and the splicing device includes a magnet, and the magnet is fixedly connected to the first screw rod. A slot is provided on the side of the first screw rod close to the magnet, and a round sleeve is fixedly connected on the side of the second screw rod close to the slot. By setting up the splicing device, when the length of the screw is insufficient, the length of the screw can be quickly extended through the splicing device to meet the requirements of the moving distance in different working scenarios.

[0011] Preferably, the circular sleeve is inserted into the slot, and the inner wall of the slot is fixedly connected to a fixed rod. By setting the circular sleeve, the circular sleeve plays a key role in connecting the upper and lower parts during the screw rod splicing process. When the second screw rod is inserted into the first screw rod, the circular sleeve is inserted into the slot as a transition part connecting the two.

[0012] Preferably, the fixing rod is clamped with the circular sleeve, and the magnet is magnetically connected to the second screw rod. By setting the magnet, the magnetic attraction of the magnet provides a fast and convenient positioning method during the screw rod splicing process. When the second screw rod is inserted into the first screw rod, and the circular sleeve is inserted into the slot and the fixing rod passes through the circular sleeve, the magnetic attraction between the magnet and the second screw rod can help the user quickly determine the initial position of the splicing.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are:

[0014] In the utility model, by setting a guiding device and a splicing device, when in use, when the mobile platform moves, the bracket cooperates with the mobile platform to push the circular wheel, and the circular wheel rotates while driving the card sleeve to be parallel along the guide rail to keep the mobile platform moving smoothly. When the length of the screw rod is insufficient, the second screw rod is inserted into the first screw rod. When the circular sleeve is inserted into the slot, the fixed rod passes through the circular sleeve, and the second screw rod is rotated to drive the circular sleeve to resist the fixed rod. At the same time, the magnet and the second screw rod are magnetically attracted to complete the splicing. By setting the utility model, the circular wheel and the guide rail cooperate with each other, so that the mobile platform always moves parallel to the predetermined track during the movement process. This effectively reduces the instability of the mobile platform such as offset, shaking or tilting during the movement process, and ensures the smooth operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a three-dimensional structural diagram of a high-precision double-lubricated screw;

[0016] Figure 2 The utility model provides a schematic structural diagram of a guide device for a high-precision double-lubricated screw;

[0017] Figure 3 This utility model proposes a high-precision double-lubricated screw Figure 2 A schematic diagram of the enlarged structure at point A;

[0018] Figure 4 The utility model provides a structural schematic diagram of a high-precision double-lubricated screw splicing device;

[0019] Figure 5 The utility model provides a partial structural schematic diagram of a splicing device for high-precision double-lubricated screws.

[0020] Legend: 1. First screw rod; 2. Second screw rod; 3. Moving platform; 4. Guide device; 41. Mounting frame; 42. Guide rail; 43. Bracket; 44. Bending rod; 45. Round wheel; 46. Clamping sleeve; 5. Splicing device; 51. Slot; 52. Magnet; 53. Fixing rod; 54. Round sleeve. DETAILED DESCRIPTION

[0021] See also Figure 1-5The utility model provides a technical solution: a high-precision double-lubricated screw, including a first screw rod 1 and a guide device 4, a second screw rod 2 is provided on one side of the first screw rod 1, a movable platform 3 is threadedly connected to the surface of the first screw rod 1, and the guide device 4 is provided on the surface of the first screw rod 1.

[0022] The specific configuration and functions of the guiding device 4 and the splicing device 5 will be described in detail below.

[0023] In this embodiment: the guiding device 4 includes a mounting frame 41, the mounting frame 41 is rotatably connected to the first screw rod 1, the lower surface of the mounting frame 41 is fixedly connected to the guide rail 42, the surface of the guide rail 42 is slidably connected to the sleeve 46, the upper surface of the sleeve 46 is fixedly connected to the bracket 43, and the side of the bracket 43 away from the sleeve 46 is fixedly connected to the movable platform 3. By setting the guiding device 4, the circular wheel 45 and the guide rail 42 cooperate with each other, so that the movable platform 3 always moves parallel to the predetermined track during the movement process, which effectively reduces the instability of the movable platform 3 such as offset, shaking or tilting during the movement, thereby ensuring the smooth operation of the equipment.

[0024] Specifically, one side of the sleeve 46 is fixedly connected to a bent rod 44, and a round hole is opened on one side of the bent rod 44. By setting the bent rod 44, the bent rod 44 can be used as a special guiding structure to work in conjunction with the circular wheel 45, the sleeve 46 and other components. During the movement of the movable platform 3, the bent rod 44 can guide the rolling direction of the circular wheel 45, further ensuring that the sleeve 46 moves parallel to the guide rail 42.

[0025] Specifically, the curved rod 44 is set in an "L" shape, and the circular hole on the surface of the curved rod 44 is rotatably connected to the circular wheel 45. By setting the circular wheel 45, when the mobile platform 3 moves, the bracket 43 pushes the circular wheel 45 to rotate. This rotational motion can effectively convert the possible unstable linear motion of the mobile platform 3 into the smooth circular motion of the circular wheel 45. Compared with direct linear friction, the direction of the friction force of the circular motion is constantly changing, making the entire movement process smoother.

[0026] Specifically, there are two bent rods 44, and the two bent rods 44 are arranged in a mirror-symmetrical manner.

[0027] Specifically, a splicing device 5 is provided on one side of the first screw rod 1, and the splicing device 5 includes a magnet 52, which is fixedly connected to the first screw rod 1. A slot 51 is provided on the side of the first screw rod 1 close to the magnet 52, and a round sleeve 54 is fixedly connected to the side of the second screw rod 2 close to the slot 51.

[0028] In this embodiment: by providing a splicing device 5, when the length of the lead screw is insufficient, the length of the lead screw can be quickly extended by the splicing device 5 to meet the requirements of the moving distance in different working scenarios.

[0029] Specifically, the circular sleeve 54 is inserted into the slot 51 , and a fixing rod 53 is fixedly connected to the inner wall of the slot 51 .

[0030] In this embodiment: by setting the circular sleeve 54, the circular sleeve 54 plays a key role in connecting the upper and lower parts during the screw rod splicing process. When the second screw rod 2 is inserted into the first screw rod 1, the circular sleeve 54 is inserted into the slot 51 as a transition part connecting the two.

[0031] Specifically, the fixing rod 53 is engaged with the circular sleeve 54 , and the magnet 52 is magnetically connected to the second screw rod 2 .

[0032] In this embodiment: by setting the magnet 52, the magnetic attraction of the magnet 52 provides a fast and convenient positioning method during the screw rod splicing process. When the second screw rod 2 is inserted into the first screw rod 1, and the round sleeve 54 is inserted into the slot 51, and the fixing rod 53 passes through the round sleeve 54, the magnetic attraction between the magnet 52 and the second screw rod 2 can help the user quickly determine the initial position of the splicing.

[0033] Working principle: By setting the guiding device 4 and the splicing device 5, when in use, when the movable platform 3 moves, the bracket 43 cooperates with the movable platform 3 to push the circular wheel 45, and the circular wheel 45 rotates while driving the sleeve 46 to be parallel along the guide rail 42 to keep the movable platform 3 moving smoothly. When the length of the screw rod is insufficient, the second screw rod 2 is inserted into the first screw rod 1. When the circular sleeve 54 is inserted into the slot 51, the fixed rod 53 passes through the circular sleeve 54, and the second screw rod 2 is rotated to drive the circular sleeve 54 to resist the fixed rod 53. At the same time, the magnet 52 and the second screw rod 2 are magnetically attracted to complete the splicing. By setting the utility model, the circular wheel 45 and the guide rail 42 cooperate with each other, so that the movable platform 3 always moves parallel to the established track during the movement process. This effectively reduces the instability such as offset, shaking or tilting of the movable platform 3 during the movement process, thereby ensuring the stability of the equipment operation.

Claims

1. A high-precision double-lubricated lead screw, comprising a first lead screw (1) and a guide device (4), characterized in that: A second screw rod (2) is provided on one side of the first screw rod (1), and a movable platform (3) is threadedly connected to the surface of the first screw rod (1). The guiding device (4) is provided on the surface of the first screw rod (1), and the guiding device (4) includes a mounting frame (41), the mounting frame (41) is rotatably connected to the first screw rod (1), the lower surface of the mounting frame (41) is fixedly connected to a guide rail (42), the surface of the guide rail (42) is slidably connected to a clamping sleeve (46), the upper surface of the clamping sleeve (46) is fixedly connected to a bracket (43), and the side of the bracket (43) away from the clamping sleeve (46) is fixedly connected to the movable platform (3).

2. A high-precision double-lubricated screw according to claim 1, characterized in that: A bent rod (44) is fixedly connected to one side of the clamping sleeve (46), and a circular hole is opened on one side of the bent rod (44).

3. A high-precision double-lubricated screw according to claim 2, characterized in that: The curved rod (44) is arranged in an "L" shape, and a circular hole on the surface of the curved rod (44) is rotatably connected to a circular wheel (45).

4. A high-precision double-lubricated screw according to claim 3, characterized in that: There are two bent rods (44), and the two bent rods (44) are arranged in a mirror-symmetrical manner.

5. The high-precision double-lubricated screw according to claim 1, characterized in that: A splicing device (5) is provided on one side of the first screw rod (1), and the splicing device (5) includes a magnet (52). The magnet (52) is fixedly connected to the first screw rod (1). A slot (51) is provided on a side of the first screw rod (1) close to the magnet (52), and a round sleeve (54) is fixedly connected to a side of the second screw rod (2) close to the slot (51).

6. A high-precision double-lubricated lead screw according to claim 5, characterized in that: The circular sleeve (54) is inserted into the slot (51), and a fixing rod (53) is fixedly connected to the inner wall of the slot (51).

7. A high-precision double-lubricated screw according to claim 6, characterized in that: The fixing rod (53) is clamped with the circular sleeve (54), and the magnet (52) is magnetically connected with the second screw rod (2).

Images