Ball screw device with internal circulation cooling function

Abstract

The utility model relates to the technical field of ball screw devices, in particular to an internal circulation cooling ball screw device which comprises a ball screw, the outer wall of the ball screw is connected with a sliding nut in a sliding mode, a sliding block is fixedly installed on the outer wall of the sliding nut, and a cooling mechanism is fixedly installed at the bottom end of the sliding block. The cooling mechanism comprises an installation shell, the installation shell is fixedly installed at the bottom end of the sliding block, a bearing box is fixedly installed below the installation shell, and refrigeration pieces are embedded in the two sides of the outer wall of the bearing box. According to the ball screw device, the circulating cooling effect can be achieved, the situation that precision is affected by deformation caused by heat overload during operation of the ball screw device is avoided, and meanwhile the situation that operation smoothness of the ball screw device is affected due to the fact that lubricating oil is affected by an air cooling mode is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of ball screw devices, and in particular to a ball screw device with internal circulation cooling. Background Technology

[0002] A ball screw is a high-precision transmission device that converts rotary motion into linear motion or vice versa. It consists of main components such as a screw, nut, balls, and a reversing device. Ball screws are manufactured with high precision and can achieve accurate linear motion positioning with a positioning accuracy down to the micrometer level. They are suitable for equipment with high precision requirements, such as CNC machine tools and machining centers.

[0003] In the existing technology, most ball screws do not have a cooling mechanism. As a result, when the ball screw is used for a long time, the friction between the balls and the screw will generate heat, which will cause cracks or deformation, thus affecting the positioning accuracy of the device and its use.

[0004] An existing patent (publication number: CN214838211U) discloses an internal circulation cooling ball screw device. By setting up a cooling mechanism and using a micro fan to blow air, the internal parts of the nut and the ball screw can be cooled down, thereby achieving a cooling effect and preventing the ball screw from generating heat due to friction. This increases the service life of the ball screw and the nut. At the same time, the filter screen can filter dust in the air, thereby preventing dust from entering the interior of the nut and increasing the cleanliness of the device.

[0005] To address the aforementioned issues, while existing patents offer solutions that utilize miniature fans to cool the system, air cooling in practical applications can cause the lubricating oil to dry out, potentially affecting the operation of the ball screw mechanism. Summary of the Invention

[0006] The purpose of this invention is to provide an internally circulating cooled ball screw device, which can achieve the effect of circulating cooling, avoid the deformation caused by heat overload during operation of the ball screw device, thus affecting the accuracy, and at the same time avoid the impact of air cooling on the lubricating oil, thereby affecting the smooth operation of the ball screw device, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a ball screw device with internal circulation cooling, comprising a ball screw, wherein a sliding nut is slidably connected to the outer wall of the ball screw, and a sliding block is fixedly installed on the outer wall of the sliding nut, and a cooling mechanism is fixedly installed at the bottom end of the sliding block;

[0008] The cooling mechanism includes a mounting shell, which is fixedly installed at the bottom of the sliding block, and a carrier box is fixedly installed below the mounting shell. Cooling fins are embedded on both sides of the outer wall of the carrier box, and an equipment shell is fixedly installed at the front end of the carrier box. A circulation pump is embedded inside the equipment shell.

[0009] Preferably, a suction pipe is embedded on one side of the cooling plate on the outer wall of the carrier box, and a circulation pipe is fixedly installed at one end of the suction pipe that penetrates into the mounting shell, and a return pipe is embedded on the other side of the cooling plate on the outer wall of the carrier box.

[0010] Preferably, the suction tube is connected to the return tube via a circulation tube, and the return tube is connected to the carrier box.

[0011] Preferably, a protective shell is fixedly installed on one side of the front end of the carrier box, and a battery pack is embedded inside the protective shell.

[0012] Preferably, the inside of the carrier box is provided with a stirring mechanism, the stirring mechanism includes a sleeve, the sleeve is fixedly installed inside the carrier box, and a rotating rod extends out of the inside of the sleeve, and a fan blade is fixedly installed on the outer wall of one end of the rotating rod that extends out of the sleeve.

[0013] Preferably, a locking block is fixedly installed at one end of the rotating rod inside the sleeve, and a locking groove is provided inside the sleeve at the position corresponding to the locking block.

[0014] Preferably, the rotating rod extends into the interior of the sleeve, and the sleeve and the rotating rod form a rotating structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model uses a circulating pump to circulate the coolant through the suction pipe, return pipe, and circulation pipe, and works in conjunction with a cooling plate to cool it down. This achieves a circulating cooling effect, preventing the ball screw device from overheating and deforming during operation, which would affect its accuracy. At the same time, it avoids the impact of air cooling on the lubricating oil, which would affect the smooth operation of the ball screw device.

[0017] 2. This utility model uses a slot in the sleeve to allow the rotating rod to rotate and engage with the locking block. Under the impact force generated by the return of coolant in the return pipe, the fan blades rotate, thereby allowing the return coolant to quickly mix with the coolant already cooled inside the carrier box, avoiding uneven heating and cooling. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an overall structural view of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the mounting shell of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the carrier box of this utility model;

[0022] Figure 4 This is a schematic diagram of the rotating rod structure of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Ball screw; 2. Sliding nut; 3. Sliding block; 4. Cooling mechanism; 401. Mounting housing; 402. Carrier box; 403. Cooling element; 404. Equipment housing; 405. Circulating pump; 406. Suction pipe; 407. Return pipe; 408. Circulation pipe; 5. Protective housing; 6. Battery assembly; 7. Stirring mechanism; 701. Sleeve; 702. Rotating rod; 703. Fan blade; 704. Locking block; 705. Locking groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a technical solution:

[0027] Please see Figures 1 to 3A ball screw device with internal circulation cooling includes a ball screw 1, a sliding nut 2 slidably connected to the outer wall of the ball screw 1, a sliding block 3 fixedly installed on the outer wall of the sliding nut 2, and a cooling mechanism 4 fixedly installed at the bottom end of the sliding block 3. The cooling mechanism 4 includes a mounting shell 401, which is fixedly installed at the bottom end of the sliding block 3. A bearing box 402 is fixedly installed below the mounting shell 401. Cooling plates 403 are embedded on both sides of the outer wall of the bearing box 402. An equipment shell 404 is fixedly installed at the front end of the bearing box 402. The internal part of the carrier box 402 is equipped with a circulation pump 405. A suction pipe 406 is embedded on one side of the cooling plate 403 on the outer wall of the carrier box 402. A circulation pipe 408 is fixedly installed at one end of the suction pipe 406 that passes through the mounting shell 401. A return pipe 407 is embedded on the other side of the cooling plate 403 on the outer wall of the carrier box 402. The suction pipe 406 is connected to the return pipe 407 through the circulation pipe 408. The return pipe 407 is connected to the carrier box 402. A protective shell 5 is fixedly installed on one side of the front equipment shell 404 of the carrier box 402. A battery pack 6 is embedded inside the protective shell 5.

[0028] By adopting the above technical solution, the suction pipe 406, return pipe 407 and circulation pipe 408 are interconnected. Under the operation of the circulation pump 405, the coolant inside the bearing box 402 can be drawn and circulated. The cooling plate 403 is used to cool the coolant, so that the sliding nut 2 can achieve the effect of circulation cooling when sliding along the ball screw 1. This avoids overheating due to long operation time, which may cause deformation and affect accuracy. At the same time, it avoids the air-cooled cooling from drying out the lubricating oil, which may affect the displacement of the sliding nut 2. In addition, the battery pack 6 is rechargeable and can directly power the cooling plate 403 and circulation pump 405 through the cable, avoiding the situation of cable entanglement when the external cable is inserted and the sliding nut 2 moves.

[0029] Specifically, such as Figure 3 and Figure 4 As shown, a stirring mechanism 7 is provided inside the bearing box 402. The stirring mechanism 7 includes a sleeve 701, which is fixedly installed inside the bearing box 402. A rotating rod 702 extends through the inside of the sleeve 701. A fan blade 703 is fixedly installed on the outer wall of one end of the rotating rod 702 that extends through the sleeve 701. A locking block 704 is fixedly installed on one end of the rotating rod 702 that is located inside the sleeve 701. A locking groove 705 is provided inside the sleeve 701 at the position corresponding to the locking block 704. The rotating rod 702 extends through the inside of the sleeve 701, and a rotating structure is formed between the sleeve 701 and the rotating rod 702.

[0030] By adopting the above technical solution, when the returned coolant enters the carrier box 402 through the return pipe 407, the impact force enables the fan blade 703 to drive the rotating rod 702 to rotate along the slot 705 of the sleeve 701 via the locking block 704. This improves the rapid fusion of the returned coolant and the coolant inside the carrier box 402, avoiding uneven heating and cooling, which would affect the cooling effect when circulated through the circulation pipe 408.

[0031] Working principle: The sliding nut 2 drives the sliding block 3 to slide along the ball screw 1. The circulating pump 405, embedded inside the equipment housing 404, operates, circulating the coolant inside the carrier box 402 through the suction pipe 406, return pipe 407, and circulation pipe 408. The cooling fins 403 embedded in the carrier box 402 further cool the coolant. The circulation pipe 408, located inside the mounting housing 401 and in close contact with the sliding nut 2, provides circulating cooling, preventing the internal lubricating oil from drying out and affecting the sliding of the sliding nut 2. The rechargeable battery is then connected to the protective housing 5. The battery pack 6 provides fixation and protection, and can provide power to the circulation pump 405 and the cooling plate 403, preventing the cables from getting tangled during device operation. The circulation pump 405 and the cooling plate 403 are controlled by the overall control terminal of the device. When the return pipe 407 enters the carrier box 402 to allow the coolant to flow back, the impact causes the fan blade 703 to drive the rotating rod 702, which rotates along the groove 705 of the sleeve 701 via the locking block 704, thereby stirring and improving the mixing speed of the coolant, and avoiding uneven heating and cooling that would affect the cooling effect.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ball screw device with internal circulation cooling, comprising a ball screw (1), characterized in that: The outer wall of the ball screw (1) is slidably connected to a sliding nut (2), and a sliding block (3) is fixedly installed on the outer wall of the sliding nut (2). A cooling mechanism (4) is fixedly installed at the bottom end of the sliding block (3). The cooling mechanism (4) includes a mounting shell (401), which is fixedly mounted on the bottom end of the sliding block (3), and a carrier box (402) is fixedly mounted below the mounting shell (401). Cooling plates (403) are embedded on both sides of the outer wall of the carrier box (402), and an equipment shell (404) is fixedly mounted on the front end of the carrier box (402). A circulating pump (405) is embedded inside the equipment shell (404).

2. The ball screw device with internal circulation cooling according to claim 1, characterized in that: A suction pipe (406) is embedded on one side of the cooling plate (403) on the outer wall of the carrier box (402), and a circulation pipe (408) is fixedly installed at one end of the suction pipe (406) that penetrates into the mounting shell (401). A return pipe (407) is embedded on the other side of the cooling plate (403) on the outer wall of the carrier box (402).

3. The ball screw device with internal circulation cooling according to claim 2, characterized in that: The suction tube (406) is connected to the return tube (407) through the circulation tube (408), and the return tube (407) is connected to the carrier box (402).

4. The ball screw device with internal circulation cooling according to claim 1, characterized in that: A protective shell (5) is fixedly installed on one side of the front equipment shell (404) of the carrier box (402), and a battery assembly (6) is embedded inside the protective shell (5).

5. The ball screw device with internal circulation cooling according to claim 1, characterized in that: The carrier box (402) is provided with a stirring mechanism (7). The stirring mechanism (7) includes a sleeve (701). The sleeve (701) is fixedly installed inside the carrier box (402), and a rotating rod (702) extends out of the sleeve (701). A fan blade (703) is fixedly installed on the outer wall of one end of the rotating rod (702) that extends out of the sleeve (701).

6. The ball screw device with internal circulation cooling according to claim 5, characterized in that: The rotating rod (702) is fixedly installed with a locking block (704) at one end inside the sleeve (701), and a locking groove (705) is opened inside the sleeve (701) at the position corresponding to the locking block (704).

7. The ball screw device with internal circulation cooling according to claim 5, characterized in that: The rotating rod (702) extends into the interior of the sleeve (701), and the sleeve (701) and the rotating rod (702) form a rotating structure.

Images