Numerical control machine tool lead screw cooling device

Abstract

The utility model discloses a numerical control machine tool lead screw cooling device, and relates to the technical field of cooling devices. The second cooling sleeve and the first cooling sleeve can be connected to a lead screw nut in a sleeving mode, and the lead screw nut is in threaded connection with the ball screw body; one of the pair of cooling assemblies is connected into the cooling sleeve I through a connecting assembly, the other cooling assembly is connected into the cooling sleeve II through a connecting assembly, and the two cooling assemblies are both in contact with the outer surface of the lead screw nut. The cooling device has the advantages of being convenient to install and good in cooling effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling devices, in particular to a cooling device for a lead screw of a numerical control machine tool. BACKGROUND

[0002] In a numerical control machine tool, heat is generated during the operation of a lead screw, and the temperature rise will cause thermal elongation of the lead screw, thereby affecting the working accuracy of the lead screw. Therefore, the lead screw needs to be cooled. However, the existing cooling device is not convenient to install and disassemble, which brings disadvantages to the maintenance work.

[0003] Therefore, it is necessary to improve the existing cooling device. CONTENT OF THE INVENTION

[0004] Therefore, the present application provides a cooling device for a lead screw of a numerical control machine tool to solve the technical problem that the existing cooling device is not convenient to install and disassemble, which brings disadvantages to the maintenance work and greatly reduces the overall cooling effect.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A cooling device for a lead screw of a numerical control machine tool, comprising:

[0007] a cooling sleeve one;

[0008] a cooling sleeve two, the cooling sleeve two and the cooling sleeve one can be sleeved on a lead screw nut, and the lead screw nut is threadedly connected with a ball screw body;

[0009] a pair of cooling assemblies, one of the cooling assemblies is connected in the cooling sleeve one through a connecting assembly, the other cooling assembly is connected in the cooling sleeve two through a connecting assembly, and both of the cooling assemblies are in contact with the outer surface of the lead screw nut.

[0010] Further, the cooling assembly comprises:

[0011] a cooling seat connected with the corresponding connecting assembly;

[0012] a plurality of flow-through pipes, the plurality of flow-through pipes are arranged side by side in the cooling seat;

[0013] a plurality of U-shaped water pipe joints, adjacent two flow-through pipes are connected through the U-shaped water pipe joints.

[0014] Further, a cooling liquid inlet pipe is installed on the uppermost flow-through pipe, and a discharge pipe is installed on the lowermost flow-through pipe.

[0015] Further, a plurality of heat dissipation plates are arranged on the outer side of the cooling seat.

[0016] Further, the heat dissipation plate comprises a heat dissipation head and a plug-in seat which are integrally connected, the plug-in seat is plugged into the sliding groove of the cooling seat and is fixed by screws.

[0017] Further, the connecting assembly comprises:

[0018] a threaded rod which is threadedly connected with the corresponding cooling sleeve one or the corresponding cooling sleeve two, the threaded rod being movably connected with the corresponding cooling seat;

[0019] a hand wheel which is connected with the threaded rod;

[0020] at least one limiting rod which is fixedly connected with the corresponding cooling seat, the limiting rod being capable of sliding on the corresponding cooling sleeve one or the corresponding cooling sleeve two.

[0021] Further, the cooling seat is fixed with a first mounting seat and at least one second mounting seat, the threaded rod being movably connected with the first mounting seat, and the limiting rod being fixed on the corresponding second mounting seat.

[0022] Further, the cooling sleeve one is provided with at least one pair of limiting grooves which are spacedly distributed in up and down directions, and the cooling sleeve two is provided with at least one pair of limiting protrusions which are spacedly distributed in up and down directions, the limiting protrusions being capable of being plugged into the corresponding limiting grooves.

[0023] From the above technical solution, the advantages of the present application are:

[0024] 1. The cooling assembly is provided in the present application, the cooling assembly adopts the mode of arranging the flow-through pipe in the cooling seat, and the cooling liquid flows through the flow-through pipe, so that the sealing property of the cooling seat is not required, and the flow-through pipe and the cooling seat are convenient to install; in addition, the cooling liquid flowing through the flow-through pipe will not be contaminated by dust and dirt, so that the cooling liquid can be reused, and the cost is saved.

[0025] 2. The heat dissipation plate is provided in the present application, the heat dissipation plate can accelerate the heat dissipation of the cooling seat, so as to improve the heat dissipation and cooling efficiency.

[0026] 3. The connecting assembly is provided in the present application, the connecting assembly is connected with the cooling seat, so that the cooling seat can be tightly attached to the screw nut through the connecting assembly, so that the cooling effect is better.

[0027] 4. In this application, two semi-circular cooling seats are provided on the outer side of the lead screw nut, which makes it convenient to install the cooling seats and the lead screw nut. In addition, cooling sleeve one and cooling sleeve two are provided on the outer side of the cooling seats. Cooling sleeve one and cooling sleeve two are spliced ​​together, which makes installation and disassembly convenient, so as to facilitate later maintenance work. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0029] Figure 1 This is a schematic diagram of the structure of this application.

[0030] Figure 2 This is a cross-sectional view of this application.

[0031] Figure 3 for Figure 1 DD view.

[0032] Figure 4 This is a schematic diagram of the cooling assembly of this application.

[0033] Figure 5 for Figure 3 A magnified view of part A.

[0034] Figure 6 for Figure 3 A magnified view of section B.

[0035] Figure 7 for Figure 3 A magnified view of a portion of point C.

[0036] Explanation of reference numerals in the attached drawings: 1-Screw nut; 2-Cooling sleeve one; 21-First groove; 22-Limiting groove; 3-Cooling sleeve two; 31-Second groove; 32-Limiting protrusion; 4-Locking bolt; 5-Nut; 6-Cooling assembly; 61-Cooling seat; 611-Through hole; 612-Slide groove; 62-Flow pipe; 63-U-shaped water pipe connector; 64-Coolant inlet pipe; 65-Drain pipe; 66-Heat plate; 661-Heat head; 6611-Flow hole; 662-Plug-in socket; 67-Screw; 68-Washer plate; 71-Threaded rod; 72-Handwheel; 73-First mounting seat; 74-Limiting rod; 75-Second mounting seat; 100-Ball screw body. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and their descriptions are used to explain this application, but are not intended to limit it.

[0038] Reference Figures 1 to 7 As Figure 1 And Figure 2 As shown in the embodiment, a numerical control machine tool screw cooling device is provided, comprising: a cooling sleeve one 2, a cooling sleeve two 3, a pair of cooling assemblies 6 and a pair of cooling assemblies, the cooling sleeve two 3 is spliced with the cooling sleeve one 2 to form an annular structure, and the annular structure can be sleeved on the screw nut 1 threaded with the ball screw body 100, for cooling the screw during work; one of the cooling assemblies 6 is connected in the cooling sleeve one 2 through a connecting assembly, the other cooling assembly 6 is connected in the cooling sleeve two 3 through another connecting assembly, and the two cooling assemblies 6 are relatively sleeved on the screw nut 1, and the heat conduction effect is better through the contact between the cooling assembly 6 and the outer surface of the screw nut 1, thereby improving the cooling effect.

[0039] As Figure 4 shown, the cooling assembly 6 comprises: a cooling seat 61, a plurality of flow-through pipes 62 and a plurality of U-shaped water pipe joints 63, the cooling seat 61 is connected in the corresponding connecting assembly, one cooling seat 61 is between the cooling sleeve one 2 and the screw nut 1, and the other cooling seat 61 is between the cooling sleeve two 3 and the screw nut 1, a plurality of through holes 611 are arranged in the cooling seat 61, and a plurality of flow-through pipes 62 are arranged in the corresponding through holes 611; adjacent two flow-through pipes 62 are connected through a U-shaped water pipe joint 63. In addition, a cooling liquid inlet pipe 64 is installed on the uppermost flow-through pipe 62, and a discharge pipe 65 is installed on the lowermost flow-through pipe 62, so that the cooling liquid can flow in the "S" shape after entering the cooling seat 61, which increases the flow path of the cooling liquid, so as to take away the heat transferred from the ball screw body 100 on the screw nut 1, and achieve the purpose of cooling.

[0040] It should be noted that the cooling liquid inlet pipe 64 is connected with the pump body of the cooling device, and the discharge pipe 65 is connected with the collecting device, and the collecting device can recycle the cooled cooling liquid for subsequent recycling treatment. The cooling device is a device capable of realizing liquid cooling function in the prior art, and therefore will not be described in detail.

[0041] As Figure 3 and Figure 7 shown, a plurality of heat dissipation plates 66 are arranged on the outer side of the cooling seat 61, the plurality of heat dissipation plates 66 are arranged at intervals on the outer periphery of the cooling seat 61, and the heat dissipation plates 66 are made of aluminum material with good heat conduction effect, which can additionally increase the contact area between the cooling seat 61 and the external environment, thereby accelerating the heat dissipation of the cooling seat 61.

[0042] Specifically, as Figure 7As shown, the heat dissipation plate 66 comprises a heat dissipation head 661 and a plug-in base 662 which are integrally connected and form a "T" structure, the heat dissipation head 661 is connected with the cooling seat 61, the plug-in base 662 has a large contact area with the cooling seat 61 and can adsorb as much heat on the cooling seat 61 as possible, and then discharges the heat outward through the heat dissipation head 661, so that the purpose of dissipating heat of the cooling seat 61 is achieved, and the cooling seat 61 is tightly attached to the screw nut 1, the screw nut 1 is sleeved on the ball screw body 100, the ball screw body 100 transmits heat to the screw nut 1, and the screw nut 1 transmits heat to the cooling seat 61, so that the effect of dissipating heat of the ball screw body 100 is achieved through dissipating heat of the cooling seat 61.

[0043] Preferably, in order to further improve the cooling effect, a plurality of flow-through holes 6611 are formed in the heat dissipation head 661, the heat on the heat dissipation plate 66 can be more quickly dissipated outward through the flow-through holes 6611 and the air outside.

[0044] Preferably, the plug-in base 662 is plugged into the sliding groove 612 of the cooling seat 61, one side of the sliding groove 612 is provided with an opening allowing the plug-in base 662 to enter, during installation, the plug-in base 662 is slid inward from the opening on one side of the sliding groove 612 until the plug-in base 662 abuts against the deepest part of the sliding groove 612, and then the heat dissipation plate 66 is fixed through the screw 67, during disassembly, the screw 67 is removed, and then the heat dissipation plate 66 is taken out from the opening, so that the installation and disassembly of the heat dissipation plate 66 are greatly facilitated.

[0045] In addition, in order to improve the firmness of the screw 67, the screw 67 is further sleeved with a backing plate 68, and the firmness and stability of the installation between the plug-in base 662 and the cooling seat 61 can be enhanced through the backing plate 68.

[0046] As shown in Figure 3 and Figure 6 The connecting assembly comprises a threaded rod 71, a hand wheel 72 and two limiting rods 74, the threaded rod 71 is threadedly connected with the corresponding cooling sleeve one 2 or the corresponding cooling sleeve two 3, and the inner end of the threaded rod 71 is rotationally connected with the cooling seat 61; the hand wheel 72 is connected with the outer end of the threaded rod 71; the limiting rod 74 is fixedly connected with the corresponding cooling seat 61 and is slidingly connected with the corresponding cooling sleeve one 2 or the corresponding cooling sleeve two 3.

[0047] Preferably, the first mounting seat 73 and two second mounting seats 75 are fixed on the cooling seat 61, the inner end of the threaded rod 71 is provided with a short shaft, the short shaft is connected with the first mounting seat 73 through a bearing, and the limiting rod 74 is fixed on the corresponding second mounting seat 75.

[0048] In the embodiment of the present application, by rotating the hand wheel 72, the threaded rod 71 can rotate on the cooling sleeve one 2 / cooling sleeve two 3. Under the sliding fit of the limiting rod 74 and the cooling sleeve one 2 or the corresponding cooling sleeve two 3, the cooling seat 61 can move in the horizontal direction, and then the cooling seat 61 is tightly contacted on the screw nut 1. Through the close contact of the two, when the heat is conducted from the screw nut 1 to the cooling seat 61, the cooling liquid flowing in the cooling seat 61 can take away as much heat on the cooling seat 61 as possible, so as to achieve the purpose of heat dissipation and cooling.

[0049] As shown in Figure 3 and Figure 5 , the cooling sleeve one 2 is provided with two pairs of limiting grooves 22 distributed in upper and lower positions, and the cooling sleeve two 3 is provided with two pairs of limiting protrusions 32 distributed in upper and lower positions. The limiting protrusions 32 are inserted into the corresponding limiting grooves 22, so that the installation positions of the cooling sleeve one 2 and the cooling sleeve two 3 are more accurate.

[0050] Preferably, the upper and lower ends of the cooling sleeve one 2 are provided with first flanges, and the upper and lower ends of the cooling sleeve two 3 are provided with second flanges. The first flange and the corresponding second flange are connected by the locking bolt 4 and locked by the nut 5, so that the cooling sleeve one 2 and the cooling sleeve two 3 are connected tightly.

[0051] In addition, one side of the first flange is provided with a first groove 21, and one side of the second flange is provided with a second groove 31. The head of the locking bolt 4 is accommodated in the first groove 21, and the nut 5 is accommodated in the second groove 31, so that the cooling sleeve one 2 and the cooling sleeve two 3 are fixed without additional installation space.

[0052] Working principle: the ball screw body 100 generates heat by friction with the screw nut 1 during operation. The heat is transmitted to the cooling seat 61 through the screw nut 1. Then the cooling liquid enters the flow pipe 62 through the cooling liquid inlet pipe 64 and flows in the "s" shape. During the flow process, the cooling liquid takes away the heat on the cooling seat 61, so that the temperature of the cooling seat 61 is reduced. The reduction of the temperature of the cooling seat 61 also indirectly reduces the temperature of the screw nut 1, so as to achieve the purpose of heat dissipation and cooling of the friction part of the screw nut 1 and the ball screw body 100.

[0053] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the embodiments of the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cooling device for a screw of a numerically controlled machine tool, characterized in that, The utility model relates to a cooling device for ball screw, which comprises: a cooling sleeve one (2); a cooling sleeve two (3) which can be sleeved on a ball screw nut (1) with the cooling sleeve one (2), the ball screw nut (1) is in threaded connection with ball screw body (100); a pair of cooling assemblies (6), one of the cooling assemblies (6) is connected in the cooling sleeve one (2) through a connecting assembly, the other cooling assembly (6) is connected in the cooling sleeve two (3) through a connecting assembly, and the two cooling assemblies (6) are in contact with the outer surface of the ball screw nut (1); the cooling assembly (6) comprises: a cooling seat (61) connected with the corresponding connecting assembly; a plurality of flow pipes (62) are arranged side by side in the cooling seat (61); a plurality of U-shaped water pipe joints (63) are arranged between adjacent two flow pipes (62); the connecting assembly comprises: a threaded rod (71) in threaded connection with the corresponding cooling sleeve one (2) or the corresponding cooling sleeve two (3), the threaded rod (71) is movably connected to the corresponding cooling seat (61); a hand wheel (72) connected with the threaded rod (71); at least one limiting rod (74) fixedly connected with the corresponding cooling seat (61), the limiting rod (74) can slide on the corresponding cooling sleeve one (2) or the corresponding cooling sleeve two (3).

2. The CNC machine tool screw cooling device according to claim 1, characterized in that, A cooling liquid inlet pipe (64) is arranged on the uppermost flow pipe (62), and a discharge pipe (65) is arranged on the lowermost flow pipe (62).

3. The CNC machine tool screw cooling device according to claim 1, characterized in that, A plurality of heat dissipation plates (66) are arranged on the outer side of the cooling seat (61).

4. The CNC machine tool screw cooling device according to claim 3, characterized in that, The heat dissipation plate (66) comprises a heat dissipation head (661) and a plug-in seat (662) connected integrally, the plug-in seat (662) is plugged into the sliding groove (612) of the cooling seat (61) and is fixed by a screw (67).

5. The CNC machine tool screw cooling device according to claim 4, characterized in that, A first mounting seat (73) and at least one second mounting seat (75) are fixed on the cooling seat (61), the threaded rod (71) is movably connected to the first mounting seat (73), and the limiting rod (74) is fixed to the corresponding second mounting seat (75).

6. The CNC machine tool screw cooling device according to claim 1, characterized in that, At least one pair of limiting grooves (22) are arranged on the cooling sleeve one (2) and spaced apart upward and downward, at least one pair of limiting protrusions (32) are arranged on the cooling sleeve two (3) and spaced apart upward and downward, and the limiting protrusion (32) can be plugged into the corresponding limiting groove (22).

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