Ball screw with protection function

Abstract

The utility model discloses a ball screw with a protection function, belongs to the technical field of ball screws, and aims to solve the problems that in the prior art, a mechanism for cleaning dust in a thread groove in a screw rod is lacked, a ball rubs with the dust on the thread groove when moving along the thread groove, the smoothness of a nut in the moving process is reduced, and the service life of the nut is prolonged. Moreover, the abrasion of the ball is also increased, and the service life of the ball screw is shortened. Comprising a lead screw, the lead screw is sleeved with a nut in a threaded mode, flanges are installed at the two ends of the nut and larger than the nut, bolts are connected to the two ends of the side faces of the flanges in a threaded mode, and the flanges are movably connected with ash removal assemblies through bolt threads. According to the ball screw with the protection function, through the arrangement of the dust removal assembly, dust on the threaded groove of the screw can be conveniently removed, friction between a ball and the dust is avoided when the ball moves, smoothness of the nut during operation is guaranteed, and meanwhile the service life of the ball screw is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball screws, and in particular relates to a ball screw with a protective function. Background Art

[0002] Ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotational motion into linear motion, or to convert torque into axial repetitive force. It also has the characteristics of high precision, reversibility and high efficiency.

[0003] The existing ball screw prevents dust from entering the nut by setting a dust ring, but lacks a mechanism for cleaning the dust on the thread groove on the screw. When the ball moves along the thread groove, it will rub against the dust on the thread groove, which reduces the smoothness of the nut when moving, and also increases the wear of the ball, reducing the service life of the ball screw. Therefore, a technical measure is proposed to solve the problem of lack of a mechanism for cleaning the dust on the thread groove on the screw, and when the ball moves along the thread groove, it will rub against the dust on the thread groove, which reduces the smoothness of the nut when moving, and also increases the wear of the ball, reducing the service life of the ball screw. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a ball screw with a protective function, aiming to solve the problem that the prior art lacks a mechanism for cleaning dust on the thread groove on the screw. When the ball moves along the thread groove, it will rub against the dust on the thread groove, reducing the smoothness of the nut when moving, and also increasing the wear of the ball, thereby reducing the service life of the ball screw.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a ball screw with a protective function, including a screw, the outer thread sleeve of the screw is provided with a nut, flanges are installed at both ends of the nut, the size of the flange is larger than the nut, bolts are threadedly connected at both ends of the flange side, and the flange is movably connected to a dust cleaning component through the bolt thread, and the dust cleaning component includes a fixing ring, and two groups of symmetrically distributed plug plates are provided on the side of the fixing ring, the plug plates are arranged in an arc shape, and the plug plates are provided with threaded holes, and the plug plates are slidably inserted into the flange, and the fixing ring is movably connected to the flange through the plug plates, and the bolts connect the plug plates and the flange, and a sliding groove is provided on the upper surface of the fixing ring. Thanks to the setting of the sliding groove, it is convenient to move the brush cotton so that the brush cotton can be The cam is provided with a screw thread groove, and the cam is provided with a screw rod, and the cam and the knob are threadedly connected with a screw rod, and the lower end of the screw rod is threadedly connected with a connecting rod, and a spring is installed at the upper end of the connecting rod, and the lower end of the spring is connected with a round rod, and the lower end of the round rod is connected with a bottom plate, and a brush cotton is installed on the lower surface of the bottom plate, and the brush cotton is adapted to the thread groove of the screw rod, and the round rod passes through the lower part of the connecting rod, and the round rod and the connecting rod are slidably connected, and the size of the connecting rod is larger than the slide groove. Thanks to the setting of the cam is convenient to clean the dust on the thread groove of the screw rod, and the friction between the ball bearing and the dust is avoided when the ball bearing moves, thereby ensuring the smoothness of the nut during operation and improving the service life of the ball screw.

[0008] Furthermore, end rods are connected to both ends of the screw rod.

[0009] Furthermore, a return device is provided inside the nut, a rolling groove is opened inside the nut, a ball is arranged in the rolling groove, and a dust ring is installed inside the flange. Thanks to the setting of the return device, the ball completes the return, and thanks to the setting of the dust ring, dust is prevented from entering the inside of the nut.

[0010] (3) Beneficial effects

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model makes it easy to clean the dust on the threaded groove of the screw rod through the provision of the cleaning component, avoids friction between the ball bearing and the dust when moving, ensures the smoothness of the nut during operation, and at the same time improves the service life of the ball screw rod, and the movable connection between the connecting rod and the screw rod makes it convenient to take out and replace the brush cotton, and the installation of the spring ensures that the brush cotton can always be pressed against the threaded groove to ensure the cleaning effect, and the provision of the sliding groove makes it convenient to move the brush cotton so that the brush cotton can be moved to engage the threaded groove, firstly, the cleaning component is installed on the flange, and the brush cotton is pressed against the threaded groove during installation, and when the nut moves, the brush cotton is driven to contact the threaded groove before, thereby completing the cleaning of the threaded groove.

[0013] The ball bearing is reversed by a return device, a dust ring prevents dust from entering the nut, and a pipeline for injecting lubricating oil is provided on the side of the nut to provide lubrication for the ball bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the nut and flange;

[0017] Figure 3 It is a schematic diagram of the structure of the dust cleaning component;

[0018] Figure 4 It is a schematic diagram of the structure of the separation state between the screw and the brush cotton.

[0019] The markings in the attached drawings are: 1. screw rod; 2. dust cleaning assembly; 3. end rod; 4. nut; 5. flange; 6. bolt; 7. rolling groove; 8. ball; 9. return device; 10. dust ring; 201. fixing ring; 202. plug plate; 203. threaded hole; 204. slide groove; 205. screw rod; 206. knob; 207. arc plate; 208. connecting rod; 209. spring; 210. round rod; 211. bottom plate; 212. brush cotton. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] This specific implementation is a ball screw with a protective function, and its structural schematic diagram is as follows Figure 1 , Figure 2As shown, it includes a screw rod 1, a nut 4 is provided on the external thread sleeve of the screw rod 1, flanges 5 are installed at both ends of the nut 4, the size of the flange 5 is larger than the nut 4, bolts 6 are threadedly connected at both ends of the side of the flange 5, and the flange 5 is movably connected with a cleaning component 2 through the bolts 6 threads, and end rods 3 are connected at both ends of the screw rod 1. A return device 9 is provided inside the nut 4, a rolling groove 7 is opened inside the nut 4, and a ball 8 is arranged in the rolling groove 7. A dust ring 10 is installed inside the flange 5. When the cleaning component 2 is actually used, the cleaning component 2 is first installed on the flange 5. When the screw rod 1 is running, the motor drives the end rod 3 to rotate, and the rotation of the end rod 3 drives the screw rod 1 to rotate. The rotation of the screw rod 1 drives the ball 8 to move along the rolling groove 7. The movement of the ball 8 drives the nut 4 to move horizontally. The horizontal movement of the nut 4 drives the flange 5 and the cleaning component 2 to move. When the cleaning component 2 moves, it contacts with the thread groove of the screw rod 1. Before the ball 8 contacts the thread groove, the thread groove is cleaned.

[0022] Reference Figure 1 , Figure 3 , Figure 4As shown, the cleaning component 2 includes a fixing ring 201, and two groups of symmetrically distributed plug plates 202 are provided on the side of the fixing ring 201. The plug plates 202 are arranged in an arc shape, and threaded holes 203 are opened on the plug plates 202. The plug plates 202 are slidably inserted into the flange 5. The fixing ring 201 is movably connected to the flange 5 through the plug plates 202, and the bolts 6 connect the plug plates 202 and the flange 5. A slide groove 204 is provided on the upper surface of the fixing ring 201, and the dust cleaning component 2 also includes an arc plate 207, which is fitted with the fixing ring 201, and a knob 206 is fitted on the upper surface of the arc plate 207, and the arc plate 207 and the knob 206 are threadedly connected with a screw rod 205, and a connecting rod 208 is movably connected with a thread at the lower end of the screw rod 205, and a spring 209 is installed at the upper end of the connecting rod 208, and a round rod 210 is connected to the lower end of the spring 209, and a bottom plate 211 is connected to the lower end of the round rod 210, and a brush cotton 212 is installed on the lower surface of the bottom plate 211, and the brush cotton 212 is adapted to the thread groove of the screw rod 1. The round rod 210 passes through the lower part of the connecting rod 208, and the round rod 210 and the connecting rod 208 are slidably connected. The size of the connecting rod 208 is larger than the slide groove 204. The plug plate 202 on the side of the fixing ring 201 is aligned with the flange 5 and inserted. Then, the fixing ring 201 and the flange 5 are threadedly connected using the bolt 6. Then, the brush cotton 212 is installed, and the arc plate 207 is fitted with the slide groove 204 of the fixing ring 201. Then, the screw 205 is threaded through the arc plate 207. At this time, the lower surface of the brush cotton 212 is in contact with the screw rod 1. Then, the connecting rod 208 is pressed down to compress the spring 209. The connecting rod 208 is pushed into the position between the fixing ring 201 and the screw rod 1. When the connecting rod 208 reaches the lower part of the screw rod 205, the connecting rod 208 is connected to the screw rod 205. Then the arc plate 207 is pushed to drive the screw rod 205 to move horizontally. The horizontal movement of the screw 205 drives the connecting rod 208, the spring 209, the round rod 210, the bottom plate 211 and the brush cotton 212 to move horizontally. When the brush cotton 212 contacts the thread groove of the screw rod 1, the spring 209 rebounds and drives the brush cotton 212 to press against the thread groove of the screw rod 1 (and the spring 209 has not fully rebounded at this time). At this time, the brush cotton 212 is moved upward. Rotate the screw 205 to drive the connecting rod 208 to move upward (pressing the arc plate 207 at the same time), and the connecting rod 208 moves upward and the spring 209 rebounds. When the spring 209 rebounds completely, the upper end of the connecting rod 208 contacts the lower surface of the slide groove 204, and the brush cotton 212 is still pressed against the threaded groove of the screw rod 1. At this time, the spring 209 will not drive the arc plate 207 to move upward, and then the knob 206 is screwed into the screw 205. The knob 206 moves downward and presses against the arc plate 207, so that the arc plate 207 presses against the upper surface of the fixing ring 201. At this time, the arc plate 207 is fixed, and the brush cotton 212 is also fixed.

[0023] Working principle: When the dust cleaning component 2 is actually used, first install the dust cleaning component 2, align the plug plate 202 on the side of the fixing ring 201 with the flange 5, then use the bolt 6 to thread the fixing ring 201 and the flange 5, then install the brush cotton 212, fit the arc plate 207 with the slide groove 204 of the fixing ring 201, then thread the screw 205 through the arc plate 207, at this time, the lower surface of the brush cotton 212 is in contact with the screw 1, and then press down to connect Rod 208 compresses spring 209, pushes connecting rod 208 into the position between fixing ring 201 and screw rod 1, and when connecting rod 208 reaches the lower part of screw rod 205, connects connecting rod 208 with screw rod 205, then pushes arc plate 207 to drive screw rod 205 to move horizontally, and screw 205 moves horizontally to drive connecting rod 208, spring 209, round rod 210, bottom plate 211, and brush cotton 212 to move horizontally. When the groove contacts, the spring 209 rebounds and drives the brush cotton 212 to press against the thread groove of the screw rod 1 (and the spring 209 has not fully rebounded at this time). At this time, the screw rod 205 is rotated upward to drive the connecting rod 208 to move upward (while pressing the arc plate 207), and the connecting rod 208 moves upward and the spring 209 rebounds. When the spring 209 fully rebounds, the upper end of the connecting rod 208 contacts the lower surface of the slide groove 204, and the brush cotton 212 is still pressed against the thread groove of the screw rod 1. At this time, the spring 20 9 will not drive the arc plate 207 to move upward, and then the knob 206 is screwed into the screw rod 205, and the knob 206 moves downward to abut against the arc plate 207, so that the arc plate 207 is pressed against the upper surface of the fixing ring 201. At this time, the arc plate 207 is fixed, and the brush cotton 212 is also fixed. At this time, the limit of the brush cotton 212 is completed. Through the setting of the dust cleaning component 2, it is convenient to clean the dust on the thread groove of the screw rod 1, ensuring the smoothness of the nut 4 during operation, and at the same time improving the service life of the ball 8;

[0024] When the screw 1 is running, the motor drives the end rod 3 to rotate, and the rotation of the end rod 3 drives the screw 1 to rotate. The rotation of the screw 1 drives the ball 8 to move along the rolling groove 7. The movement of the ball 8 drives the nut 4 to move horizontally. The horizontal movement of the nut 4 drives the flange 5 and the cleaning component 2 to move. When the cleaning component 2 moves, the brush cotton 212 contacts the thread groove of the screw 1. Before the ball 8 contacts the thread groove, the thread groove is cleaned. The return device allows the ball 8 to complete the return. The dust ring 10 prevents dust from entering the inside of the nut 4. A pipeline for injecting lubricating oil is provided on the side of the nut 4 to provide lubrication for the ball 8.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A ball screw with a protective function, comprising a screw (1), characterized in that: The screw rod (1) is externally threaded with a nut (4), and flanges (5) are installed at both ends of the nut (4). The size of the flange (5) is larger than that of the nut (4). Bolts (6) are threadedly connected to the two ends of the side of the flange (5), and the flange (5) is threadedly movably connected to the dust cleaning component (2) through the bolts (6); The dust cleaning component (2) comprises a fixing ring (201), and two groups of symmetrically distributed plug plates (202) are provided on the side of the fixing ring (201), and the plug plates (202) are arranged in an arc shape, and the plug plates (202) are provided with threaded holes (203). The plug plates (202) are slidably inserted into the flange (5), and the fixing ring (201) is movably connected to the flange (5) through the plug plates (202), and the bolts (6) connect the plug plates (202) and the flange (5), and the upper surface of the fixing ring (201) is provided with a sliding groove (204); The dust cleaning component (2) further comprises an arc plate (207), wherein the arc plate (207) is fitted with the fixing ring (201), a knob (206) is fitted on the upper surface of the arc plate (207), the arc plate (207) and the knob (206) are threadedly connected to a screw rod (205), the lower end of the screw rod (205) is threadedly connected to a connecting rod (208), a spring (209) is installed at the upper end of the connecting rod (208), and the spring (209) is arranged on the inner side of the connecting rod (208). 9) A round rod (210) is connected to the lower end, and a bottom plate (211) is connected to the lower end of the round rod (210). A brush cotton (212) is installed on the lower surface of the bottom plate (211). The brush cotton (212) is adapted to the thread groove of the screw rod (1). The round rod (210) passes through the lower part of the connecting rod (208). The round rod (210) and the connecting rod (208) are slidably connected. The size of the connecting rod (208) is larger than the slide groove (204).

2. A ball screw with a protective function according to claim 1, characterized in that: The two ends of the screw rod (1) are connected to end rods (3).

3. The ball screw with protective function according to claim 2, characterized in that: A return device (9) is arranged inside the nut (4), a rolling groove (7) is opened inside the nut (4), a ball (8) is arranged in the rolling groove (7), and a dust ring (10) is installed inside the flange (5).

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