Hollow screw rod cooling connecting device

Abstract

The utility model relates to the technical field of screw rod cooling, in particular to a hollow screw rod cooling connecting device, which is characterized in that cooling oil is pressurized and enters through an oil inlet on a support base, the oil to be cooled flows into an oil inlet area in a cavity and then flows into a hollow screw rod through an oil inlet channel in a connecting component, and after the hollow screw rod is filled with the cooling oil, the hollow screw rod is cooled. And the cooling oil returns to the oil outlet area of the supporting base through the oil outlet channel and finally flows out through the oil outlet, so that high temperature generated by friction on the supporting base is taken away, and the transmission precision of the lead screw is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of screw rod cooling, and more specifically, to a hollow screw rod cooling connection device. Background Art

[0002] A CNC machine tool, short for digitally controlled machine tool, is an automated machine tool equipped with a program control system. This control system logically processes programs specified by control codes or other symbolic instructions, decodes them, and represents them as coded numbers, which are then input into the CNC device via an information carrier. After computational processing, the CNC device issues various control signals, controlling the machine's movements and automatically producing parts to the shape and size specified in the drawings.

[0003] Among them, due to the precise processing accuracy requirements of CNC machine tools, the entire processing process, including the movement of the spindle and worktable, must be accurate in order to truly achieve the precision requirements for the fine processing of a single product. However, in the process of the screw driving the spindle and worktable to move at high speed, friction will generate high temperature, which will cause the screw to deform during movement. Based on this, most CNC machine tools will perform temperature control treatment on the screw. For example, the Chinese patent No.: 201810865482.5 discloses a CNC machine tool screw; for example, the Chinese patent No.: 201910629981.9 discloses a CNC lathe screw cooling protection device; both use liquid cooling to cool the screw to avoid problems with screw transmission accuracy caused by high temperature.

[0004] During the rotation of the screw, not only will high temperature be generated due to the friction between the screw and the screw slider, but the support seat for the screw installation will also generate friction and high temperature. This is also a corner that most CNC machine tools will forget. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a hollow screw cooling connection device, which has the advantage of taking away the high temperature generated by friction on the support base and avoiding affecting the transmission accuracy of the screw.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a hollow screw cooling connection device, comprising a support base, a cavity provided in the support base, and a through hole provided on the support base, the through hole being in communication with the cavity, the support base being provided with a connecting assembly through the through hole, and the hollow screw being fixed to the support base through the connecting assembly;

[0007] An oil inlet and an oil outlet are provided on the support base, and an oil inlet area and an oil outlet area are distributed in the cavity. The oil inlet is communicated with the oil inlet area, and the oil outlet is communicated with the oil outlet area. The oil inlet area and the oil outlet area are blocked by the connecting component. An oil inlet channel communicated with the oil inlet area is provided at the end of the connecting component, and an oil outlet channel communicated with the oil outlet is provided on one side of the connecting component. The connecting component is connected to the hollow screw rod; cooling oil enters from the oil inlet, enters the connecting component through the oil inlet area to the oil inlet channel at the end of the connecting component, and then enters the hollow screw rod, and then flows into the oil outlet area through the hollow screw rod to the oil outlet channel of the connecting component, thereby forming a cooling cycle.

[0008] Preferably, the connecting assembly includes a fixed sleeve connected to the hollow screw, the end of the fixed sleeve is located in the oil inlet area, the fixed sleeve is provided with an oil outlet hole for cooling oil to flow out in the oil outlet area, and the oil inlet channel and the oil outlet channel are extruded and circulated in the fixed sleeve and the hollow screw.

[0009] Preferably, a first seal and a second seal are provided in the oil inlet area and the oil outlet area between the fixing sleeve and the supporting base, and the oil inlet area and the oil outlet area are blocked by the first seal and the second seal.

[0010] Preferably, the height of the oil outlet hole is set higher than the height of the central axis of the fixing sleeve.

[0011] Preferably, the fixing sleeve is fixed to the hollow screw rod at one end away from the supporting base through a threaded connection.

[0012] Preferably, the support base is arranged in a "T" shape.

[0013] To sum up, the utility model has the beneficial effects: the cooling oil is pressurized and enters through the oil inlet on the support base. After the cooling oil flows into the oil inlet area in the cavity, it flows into the hollow screw rod through the oil inlet channel in the connecting assembly. After the cooling oil fills the hollow screw rod, the cooling oil returns to the oil outlet area of ​​the support base through the oil outlet channel, and finally flows out through the oil outlet. This reciprocating cycle takes away the high temperature generated by friction on the support base, avoiding affecting the transmission accuracy of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the connection structure of the support base and the connection assembly of an embodiment of the utility model;

[0015] Figure 2 It is a cross-sectional view of an embodiment of the present utility model.

[0016] Figure numerals: 1. Support base; 11. Oil inlet; 12. Oil outlet; 13. Oil inlet area; 14. Oil outlet area; 15. Through hole; 2. Connecting assembly; 21. Oil inlet channel; 22. Oil outlet channel; 23. Fixing sleeve; 24. First sealing member; 25. Second sealing member; 26. Oil outlet hole. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] It should be noted that when a component is referred to as being “fixed to” or “disposed on” another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being “connected to” another component, it can be directly or indirectly connected to the other component.

[0019] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 a limitation on the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0021] A hollow screw cooling connection device, see Figure 1 and Figure 2 , comprising a support base 1, a cavity provided in the support base 1, and a through hole 15 provided on the support base 1, the through hole 15 being in communication with the cavity, the support base 1 being provided with a connecting component 2 through the through hole 15, and the hollow screw being fixed to the support base 1 through the connecting component 2;

[0022] An oil inlet 11 and an oil outlet 12 are provided on the support base 1, and an oil inlet area 13 and an oil outlet area 14 are distributed in the cavity. The oil inlet 11 is connected to the oil inlet area 13, and the oil outlet 12 is connected to the oil outlet area 14. The oil inlet area 13 and the oil outlet area 14 are blocked by the connecting component 2. An oil inlet channel 21 connected to the oil inlet area 13 is provided at the end of the connecting component 2, and an oil outlet channel 22 connected to the oil outlet 12 is provided on one side of the connecting component 2. The connecting component 2 is connected to the hollow screw rod; the cooling oil enters from the oil inlet 11, enters the connecting component 2 through the oil inlet area 13 to the oil inlet channel 21 at the end of the connecting component 2, enters the hollow screw rod, and then flows into the oil outlet area 14 through the hollow screw rod to the oil outlet channel 22 of the connecting component 2, thereby forming a cooling cycle.

[0023] When this embodiment is implemented, the cooling oil is pressurized and enters through the oil inlet 11 on the support base 1. After the cooling oil flows into the oil inlet area 13 in the cavity, it flows into the hollow screw through the oil inlet channel 21 in the connecting component 2. After the cooling oil fills the hollow screw, the cooling oil returns to the oil outlet area 14 of the support base 1 through the oil outlet channel 22, and finally flows out through the oil outlet 12. This reciprocating cycle takes away the high temperature generated by friction on the support base 1, thereby avoiding affecting the transmission accuracy of the screw.

[0024] Specifically, the connecting assembly 2 includes a fixed sleeve 23 connected to the hollow screw, the end of the fixed sleeve 23 is located in the oil inlet area 13, and the fixed sleeve 23 is provided with an oil outlet hole 26 for cooling oil to flow out in the oil outlet area 14. The oil inlet channel 21 and the oil outlet channel 22 are squeezed and circulated in the fixed sleeve 23 and the hollow screw.

[0025] The fixed sleeve 23 of this embodiment is fixed to the support base 1 through a shaft sleeve, and the hollow screw rod is connected and locked by the fixed sleeve 23. The oil outlet hole 26 is set on the fixed sleeve 23. The oil inlet area 13 and the oil outlet area 14 are both located in the same cavity in the support base 1, so that the fixed sleeve 23 can be quickly cooled.

[0026] Specifically, a first seal 24 and a second seal 25 are provided between the fixing sleeve 23 and the support base 1 in the oil inlet area 13 and the oil outlet area 14 , and the oil inlet area 13 and the oil outlet area 14 are blocked by the first seal 24 and the second seal 25 .

[0027] The first sealing member 24 and the second sealing member 25 not only separate the oil inlet area 13 from the oil outlet area 14 , but also seal the fixing sleeve 23 in the cavity through the first sealing member 24 and the second sealing member 25 to ensure the flow of the cooling oil.

[0028] Specifically, the height of the oil outlet hole 26 is set to be higher than the height of the central axis of the fixing sleeve 23 .

[0029] Since the oil inlet channel 21 and the oil outlet channel 22 are both located in the fixed sleeve 23, the height of the oil outlet hole 26 is set higher than the height of the central axis of the fixed sleeve 23. According to the characteristic of water flowing to lower places, the cooling oil can only be discharged through the oil outlet hole 26 after filling the fixed sleeve 23 and the hollow screw rod, thereby improving the cooling efficiency.

[0030] Specifically, the end of the fixing sleeve 23 away from the support base 1 is fixed to the hollow screw rod through a threaded connection, thereby reinforcing the connection between the fixing sleeve 23 and the hollow screw rod.

[0031] Specifically, the support base 1 is arranged in a "T" shape.

[0032] The above embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A hollow screw cooling connection device, characterized by: The invention comprises a support base, a cavity provided in the support base, and a through hole provided on the support base, wherein the through hole is in communication with the cavity, and the support base is provided with a connecting assembly through the through hole, and a hollow screw rod is fixed to the support base through the connecting assembly; An oil inlet and an oil outlet are provided on the support base, and an oil inlet area and an oil outlet area are distributed in the cavity. The oil inlet is communicated with the oil inlet area, and the oil outlet is communicated with the oil outlet area. The oil inlet area and the oil outlet area are blocked by the connecting component. An oil inlet channel communicated with the oil inlet area is provided at the end of the connecting component, and an oil outlet channel communicated with the oil outlet is provided on one side of the connecting component. The connecting component is connected to the hollow screw rod; cooling oil enters from the oil inlet, enters the connecting component through the oil inlet area to the oil inlet channel at the end of the connecting component, and then enters the hollow screw rod, and then flows into the oil outlet area through the hollow screw rod to the oil outlet channel of the connecting component, thereby forming a cooling cycle.

2. A hollow screw cooling connection device according to claim 1, characterized in that: The connecting assembly includes a fixed sleeve connected to the hollow screw rod, the end of the fixed sleeve is located in the oil inlet area, the fixed sleeve is provided with an oil outlet hole for cooling oil to flow out in the oil outlet area, and the oil inlet channel and the oil outlet channel are squeezed and circulated in the fixed sleeve and the hollow screw rod.

3. The hollow screw cooling connection device according to claim 2, characterized in that: A first seal and a second seal are provided in the oil inlet area and the oil outlet area between the fixing sleeve and the supporting base, and the oil inlet area and the oil outlet area are blocked by the first seal and the second seal.

4. The hollow screw cooling connection device according to claim 3, characterized in that: The height of the oil outlet hole is set higher than the height of the central axis of the fixing sleeve.

5. The hollow screw cooling connection device according to claim 4, characterized in that: The fixing sleeve is fixed to the hollow screw rod at one end away from the supporting base through a threaded connection.

6. The hollow screw cooling connection device according to claim 1, characterized in that: The support base is arranged in a "T" shape.

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