Built-in heat dissipation screw rod

Abstract

The utility model relates to the technical field of linear transmission, in particular to a built-in heat dissipation screw rod, which comprises a threaded guide rod, a transmission guide sleeve, a screw rod bushing, a first joint, a second joint and a cooling system, the threaded guide rod comprises a first end part, a threaded outer edge and a second end part, and a cooling through hole penetrates through the axial center of the threaded guide rod; the outer diameter of the transmission guide sleeve is attached to the inner diameter of the cooling through hole, the transmission guide sleeve is provided with a flowing channel, and cooling liquid is conveyed in the flowing channel. The first joint is connected to the first end part and is used for guiding the cooling liquid into the flowing channel; the second connector is connected to the second end and used for guiding the cooling liquid out of the flowing channel. The problems that heat generated during high-speed transmission of an existing lead screw cannot be dissipated, and the lead screw is prone to deformation are solved, internal cooling circulation heat dissipation is adopted, heat dissipation is fast, the heat dissipation efficiency is high, and the transmission precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of linear transmission, in particular to a built-in heat dissipation screw rod. Background Art

[0002] Ball screw is an ideal product for converting rotary motion into linear motion, or converting linear motion into rotary motion. Ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or convert torque into axial repetitive force, while having the characteristics of high precision, reversibility and high efficiency.

[0003] In the process of high-speed transmission, the existing ball screw inevitably generates heat due to the repeated friction between the ball and the slideway. During high-speed reciprocating transmission, the heat cannot be discharged, which affects the transmission accuracy and life of the screw. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a solution to the problem that the existing screw rod generates heat but cannot dissipate it during high-speed transmission, and the screw rod is prone to deformation. The utility model adopts internal cooling cycle heat dissipation, quickly dissipates heat, has high heat dissipation efficiency, and has a built-in heat dissipation screw rod with high transmission accuracy.

[0005] The technical scheme adopted by the utility model is: a built-in heat dissipation screw rod, including a threaded guide rod, a transmission guide sleeve, a screw bushing, a first joint, a second joint, and a cooling system, the threaded guide rod including a first end, a threaded outer edge, and a second end, the threaded guide rod is axially centered with a cooling through hole; the outer diameter of the transmission guide sleeve fits the inner diameter of the cooling through hole, the transmission guide sleeve is provided with a flow channel, and coolant is transmitted in the flow channel; the screw bushing is provided with steel balls, and the screw bushing is connected to the threaded outer edge through steel ball transmission; the first joint is connected to the first end and is used to introduce coolant into the flow channel; the second joint is connected to the second end and is used to lead coolant out of the flow channel; the cooling system includes a cooling water tank and a water pump, the water pump is provided with a water inlet pipe and a water outlet pipe, the water outlet pipe is connected to the first joint, and the water inlet pipe is connected to the second joint.

[0006] A further improvement to the above solution is that the first end, the outer edge of the thread and the second end are integrally formed by DC53 material, and the quenching hardness of at least the outer edge of the thread reaches 58-63HRC.

[0007] A further improvement to the above solution is that steel ball thread grooves are evenly distributed on the periphery of the outer edge of the thread, and the screw bushing is connected to the steel ball thread grooves through steel ball rolling.

[0008] A further improvement to the above solution is that the first end is provided with a first thread head, which is threadedly connected to the first joint, and the second end is provided with a second thread head, which is threadedly connected to the second joint.

[0009] A further improvement to the above scheme is that the transmission guide sleeve includes a heat transfer ring and a heat dissipation ring arranged inside the heat transfer ring, the heat transfer ring is a heat dissipation copper ring, the heat dissipation ring is a heat dissipation aluminum ring, and the heat dissipation copper ring and the heat dissipation aluminum ring are formed into one by metallurgical bonding.

[0010] A further improvement to the above solution is that a heat-conducting adhesive is provided on a surface of the heat transfer ring that is in contact with the cooling through hole.

[0011] A further improvement to the above solution is that the flow channel is arranged in a heat dissipation ring, and a plurality of arc-shaped grooves are formed on the inner diameter of the heat dissipation ring.

[0012] A further improvement to the above solution is that the first joint includes a first connecting nut and a first pipe interface of the first connecting nut; the first connecting nut is provided with a first rotating connecting portion, and the first pipe interface can be rotatably connected to the first rotating connecting portion.

[0013] A further improvement to the above solution is that the second joint includes a second connecting nut and a second pipe interface of the second connecting nut; the second connecting nut is provided with a second rotating connecting portion, and the second pipe interface can be rotatably connected to the second rotating connecting portion.

[0014] A further improvement to the above solution is that the cooling water tank is provided with a partition plate, the partition plate is used to separate the water inlet pipe and the water outlet pipe, and a guide hole is provided at the bottom of the partition plate.

[0015] The beneficial effects of the utility model are:

[0016] Compared with the existing screw rod, the utility model is provided with a cooling through hole in the threaded guide rod, and a transmission guide sleeve is arranged in the cooling through hole, a flow channel is arranged in the transmission guide sleeve, and the two ends of the flow channel are connected to the cooling system through a quick connector. The cooling system circulates the water in the cooling water tank in the flow channel through a water pump, and the heat generated by the high-speed reciprocating transmission of the steel ball of the screw bushing on the outer edge of the thread is extracted to form a fast internal cooling cycle, which has high heat dissipation efficiency for the screw rod, good transmission stability and high precision. The problem that the existing screw rod generates heat and cannot dissipate it during high-speed transmission and the screw rod is prone to deformation is solved. The internal cooling cycle is used for heat dissipation, and the heat is quickly dissipated, with high heat dissipation efficiency and high transmission precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the built-in heat dissipation screw rod of the utility model;

[0018] Figure 2 for Figure 1 A top view of the built-in heat dissipation screw;

[0019] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0020] Figure 4 for Figure 2 Cross-sectional view of the middle BB;

[0021] Figure 5 for Figure 3 The enlarged schematic diagram at A in the middle;

[0022] Figure 6 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0023] Figure 7 for Figure 1 Schematic diagram of the cooling status of the built-in heat dissipation screw.

[0024] Explanation of the accompanying drawings: threaded guide rod 1, first end 11, first thread head 111, thread outer edge 12, steel ball thread groove 121, second end 13, second thread head 131, cooling through hole 14, transmission guide sleeve 2, flow channel 21, heat transfer ring 22, heat dissipation ring 23, screw bushing 3, first joint 4, first connecting nut 41, first rotating connection part 411, first pipe interface 42, second joint 5, second connecting nut 51, second rotating connection part 511, second pipe interface 52, cooling system 6, cooling water tank 61, water pump 62, water inlet pipe 63, water outlet pipe 64. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] like Figure 1 to Figure 7 As shown, in one embodiment of the utility model, a built-in heat dissipation screw is involved, including a threaded guide rod 1, a transmission guide sleeve 2, a screw sleeve 3, a first joint 4, a second joint 5, and a cooling system 6, wherein the threaded guide rod 1 includes a first end 11, a threaded outer edge 12, and a second end 13, and a cooling through hole 14 is axially penetrated in the center of the threaded guide rod 1; the outer diameter of the transmission guide sleeve 2 is fitted with the inner diameter of the cooling through hole 14, and the transmission guide sleeve 2 is provided with a flow channel 21, and a coolant is transmitted in the flow channel 21; The screw bushing 3 is provided with a steel ball, and the screw bushing 3 is connected to the outer edge of the thread 12 through a steel ball transmission; the first joint 4 is connected to the first end 11, and is used to introduce the coolant into the flow channel 21; the second joint 5 is connected to the second end 13, and is used to discharge the coolant from the flow channel 21; the cooling system 6 includes a cooling water tank 61 and a water pump 62, and the water pump 62 is provided with a water inlet pipe 63 and a water outlet pipe 64, the water outlet pipe 64 is connected to the first joint 4, and the water inlet pipe 63 is connected to the second joint 5. In this embodiment, a cooling through hole 14 is provided in the threaded guide rod 1, and a transmission guide sleeve 2 is provided in the cooling through hole 14, a flow channel 21 is provided in the transmission guide sleeve 2, and both ends of the flow channel 21 are connected to the cooling system 6 through a quick connector. The cooling system 6 circulates the water in the cooling water tank 61 in the flow channel 21 through a water pump 62, and extracts the heat generated by the high-speed reciprocating transmission of the steel ball of the screw bushing 3 on the outer edge of the thread 12, forming a fast internal cooling cycle, which has high heat dissipation efficiency for the screw rod, good transmission stability, and high precision. The problem that the existing screw rod generates heat and cannot dissipate it during high-speed transmission and the screw rod is prone to deformation is solved, and the internal cooling cycle is used for heat dissipation, which can quickly dissipate heat, has high heat dissipation efficiency, and high transmission precision.

[0029] The first end 11, the threaded outer edge 12 and the second end 13 are integrally formed by DC53 material, and the quenching hardness of at least the threaded outer edge 12 reaches 58-63HRC. In this embodiment, the threaded guide rod 1 is formed by using DC53 material and is quenched to a hardness of 60HRC, so the structure has high strength and strong wear resistance, and the structural rigidity is improved without deformation.

[0030] The outer circumference of the thread outer edge 12 is evenly distributed with steel ball thread grooves 121, and the screw bushing 3 is connected to the steel ball thread grooves 121 through steel ball rolling. The steel ball thread grooves 121 are used to cooperate with steel ball transmission. During high-speed cyclic transmission, heat is introduced into the flow channel 21 through the steel ball thread grooves 121 for cooling and removing heat.

[0031] The first end 11 is provided with a first threaded head 111, and the first threaded head 111 is threadedly connected to the first joint 4. The second end 13 is provided with a second threaded head 131, and the second threaded head 131 is threadedly connected to the second joint 5. In this embodiment, the threaded head is provided for connecting the quick joint, and the quick joint is easy to install, and adopts a fine thread structure, and a sealing ring is provided to enhance the sealing of the structure.

[0032] See also Figure 5-6 As shown, the transmission guide sleeve 2 includes a heat transfer ring 22 and a heat dissipation ring 23 arranged in the heat transfer ring 22. The heat transfer ring 22 is a heat dissipation copper ring, and the heat dissipation ring 23 is a heat dissipation aluminum ring. The heat dissipation copper ring and the heat dissipation aluminum ring are integrated by metallurgical bonding. In this embodiment, a structure combining a copper ring and an aluminum ring is provided, which can quickly transfer and guide heat, and the heat dissipation ring 23 adopts an aluminum ring structure, which can further increase the heat dissipation efficiency, and the structure has high heat transfer and heat dissipation efficiency. In addition, a metal composite connection method of metallurgical bonding is adopted, and the integrity is good.

[0033] A heat conductive adhesive is provided on the surface of the heat transfer ring 22 that is in contact with the cooling through hole 14. In this embodiment, the gap between the cooling through hole 14 and the heat transfer ring 22 is filled with the heat conductive adhesive, which can further ensure the heat transfer effect.

[0034] Specifically, the flow channel 21 is arranged in the heat dissipation ring 23, and the inner diameter of the heat dissipation ring 23 is provided with a plurality of arc-shaped grooves 231; the structure of the arc-shaped grooves 231 increases the contact area of ​​the circulating flow of the coolant, thereby increasing the heat dissipation effect.

[0035] The first joint 4 includes a first connection nut 41 and a first pipe interface 42 of the first connection nut 41; the first connection nut 41 is provided with a first rotating connection part 411, and the first pipe interface 42 can be rotatably connected to the first rotating connection part 411. Further improvement is that the second joint 5 includes a second connection nut 51 and a second pipe interface 52 of the second connection nut 51; the second connection nut 51 is provided with a second rotating connection part 511, and the second pipe interface 52 can be rotatably connected to the second rotating connection part 511; the connection nut is used to cooperate with the connection end for threaded connection, and the pipe interface is used for pipe connection. Moreover, the rotatable connection is adopted, so that the pipe will not be affected during the rotation of the threaded guide rod 1.

[0036] The cooling water tank 61 is provided with a partition plate 611, and the partition plate 611 is used to separate the water inlet pipe 63 and the water outlet pipe 64. The bottom of the partition plate 611 is provided with a guide hole. In this embodiment, the partition plate 611 is provided to separate the water tank, and the guide hole is provided for flow guidance to prevent the water in the water inlet pipe 63 and the water outlet pipe 64 from directly mixing, which can be buffered by the partition plate 611.

[0037] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A built-in heat dissipation screw, characterized in that: include A threaded guide rod, the threaded guide rod comprising a first end, a threaded outer edge, and a second end, and a cooling through hole is axially penetrated in the center of the threaded guide rod; A transmission guide sleeve, wherein the outer diameter of the transmission guide sleeve is in close contact with the inner diameter of the cooling through hole, and the transmission guide sleeve is provided with a flow channel, and a coolant is transmitted in the flow channel; A screw bushing, wherein the screw bushing is provided with a steel ball, and the screw bushing is connected to the outer edge of the thread through the steel ball transmission; A first joint, which is connected to the first end and is used to introduce the cooling liquid into the flow channel; a second joint connected to the second end portion and used to guide the cooling liquid out of the flow channel; and A cooling system, the cooling system comprising a cooling water tank and a water pump, the water pump being provided with a water inlet pipe and a water outlet pipe, the water outlet pipe being connected to the first joint, and the water inlet pipe being connected to the second joint; The first end, the outer edge of the thread and the second end are integrally formed by DC53 material, and the quenching hardness of at least the outer edge of the thread reaches 58-63HRC; The first end portion is provided with a first thread head, the first thread head is threadedly connected to the first joint, and the second end portion is provided with a second thread head, the second thread head is threadedly connected to the second joint; The first joint includes a first connecting nut and a first pipe interface of the first connecting nut; the first connecting nut is provided with a first rotating connecting portion, and the first pipe interface can be rotatably connected to the first rotating connecting portion; The second joint includes a second connecting nut and a second pipe interface of the second connecting nut; the second connecting nut is provided with a second rotating connecting portion, and the second pipe interface can be rotatably connected to the second rotating connecting portion.

2. The built-in heat dissipation screw according to claim 1, characterized in that: The outer periphery of the outer edge of the thread is evenly distributed with steel ball thread grooves, and the screw bushing is connected to the steel ball thread grooves through steel ball rolling.

3. The built-in heat dissipation screw rod according to claim 1, characterized in that: The transmission guide sleeve comprises a heat transfer ring and a heat dissipation ring arranged inside the heat transfer ring. The heat transfer ring is a heat dissipation copper ring, and the heat dissipation ring is a heat dissipation aluminum ring. The heat dissipation copper ring and the heat dissipation aluminum ring are integrated by metallurgical bonding.

4. The built-in heat dissipation screw rod according to claim 3, characterized in that: The side of the heat transfer ring that is in contact with the cooling through hole is provided with heat conductive glue.

5. The built-in heat dissipation screw rod according to claim 3, characterized in that: The flow channel is arranged in the heat dissipation ring, and a plurality of arc-shaped grooves are formed on the inner diameter of the heat dissipation ring.

6. The built-in heat dissipation screw rod according to claim 1, characterized in that: The cooling water tank is provided with a partition plate, and the partition plate is used to separate the water inlet pipe and the water outlet pipe, and a guide hole is provided at the bottom of the partition plate.

7. The built-in heat dissipation screw rod according to claim 1, characterized in that: The first connector and the second connector are both quick connectors.

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