Spindle box heat insulation structure and machine tool

Abstract

The spindle box heat insulation structure comprises a spindle box, a gearbox, a connecting plate and a heat insulation piece, the connecting plate and the heat insulation piece are fixedly connected between the gearbox and the spindle box, the heat insulation piece is located between the connecting plate and the spindle box, and the connecting plate is provided with a cooling inlet, a cooling outlet and a cooling circulation pipeline located in the connecting plate. The cooling inlet is communicated with the cooling outlet through a cooling circulating pipeline; and the cooling circulating pipeline is connected with the cutting fluid water pump assembly. The heat insulation piece is installed between the connecting plate and the spindle box, so that heat transfer between the connecting plate and the spindle box is effectively blocked; the cutting fluid water pump assembly serves as a part of machine tool corollary equipment, the connecting plate and the cutting fluid water pump assembly are connected in series, the heat dissipation efficiency can be improved on the basis of not increasing extra cost, and the precision stability of a machine tool is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe technical field especially is a kind of main shaft box heat insulation structure and lathe. BACKGROUND

[0002] In the main shaft box and gearbox of numerical control machine tool, there are many transmission components, such as gears, bearings, etc. Friction will occur in the meshing process of gears, and with the increase of rotating speed and load, the energy of friction loss will be dissipated in the form of heat. The heat source of the gearbox part of the machine tool will directly cause the thermal deformation of the main shaft box of the machine tool, and the thermal deformation of the main shaft box of the machine tool seriously affects the machining accuracy. On the one hand, the gearbox is in contact with the main shaft box through the coupling plate, and the heat is directly transferred to the main shaft box. On the other hand, the coupling plate adopts the mode of connecting into the oil cooling system of the machine tool to take away part of the heat, but the temperature of the oil cooling system is relatively high, and the specific heat capacity of the oil is relatively low, so the heat that can be taken away in unit time is limited, and the heat dissipation effect is not good. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to realize a main shaft box heat insulation structure with superior heat insulation performance.

[0004] The purpose of the utility model is realized by adopting the following technical scheme:

[0005] A main shaft box heat insulation structure, comprising a main shaft box, a gearbox and a coupling plate fixed to the gearbox and the main shaft box, the main shaft box heat insulation structure further comprising a heat insulation piece, the heat insulation piece being located between the coupling plate and the main shaft box, the coupling plate being provided with a cooling inlet, a cooling outlet and a cooling circulation pipeline located inside the coupling plate, the cooling inlet and the cooling outlet being communicated through the cooling circulation pipeline, the main shaft box heat insulation structure further comprising a cutting fluid water pump assembly, the cooling circulation pipeline being connected with the cutting fluid water pump assembly.

[0006] Preferably, the cutting fluid water pump assembly comprises a cutting fluid water pump and a cutting fluid bamboo joint pipe, the cutting fluid water pump being connected with the cooling inlet, and the cutting fluid bamboo joint pipe being connected through the cooling outlet.

[0007] Preferably, the heat insulation piece is a heat insulation film, and the heat insulation film covers the coupling plate.

[0008] Preferably, the heat insulation piece is a non-metallic material.

[0009] Preferably, the heat insulation piece is a heat insulation plate.

[0010] Preferably, the heat insulation plate is a ceramic material.

[0011] Preferably, the coupling plate is made of a corrosion-resistant material.

[0012] Preferably, the coupling plate is made of stainless steel material.

[0013] Preferably, the main shaft box heat insulation structure further comprises a motor and a main shaft, the main shaft is installed on the main shaft box, and the motor is connected with the main shaft and located on one side of the gearbox.

[0014] A machine tool comprising the main shaft box heat insulation structure.

[0015] Compared with the prior art, the main shaft box heat insulation structure has the following advantages:

[0016] The main shaft box heat insulation structure of the present application has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The main shaft box heat insulation structure of the present application has the following advantages:

[0018] Figure 2 The main shaft box heat insulation structure of the present application has the following advantages: Figure 1 The main shaft box heat insulation structure of the present application has the following advantages:

[0019] Figure 3 The main shaft box heat insulation structure of the present application has the following advantages: Figure 1 The main shaft box heat insulation structure of the present application has the following advantages:

[0020] In the figure: 100, coupling plate; 101, cooling inlet; 102, cooling outlet; 103, cooling circulation pipeline; 200, gearbox; 300, main shaft box; 400, motor; 500, main shaft; 600, cutting fluid water pump assembly; 601, cutting fluid bamboo joint pipe; 700, heat insulation piece. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or can exist with another intervening component fixed therebetween. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or can exist with another intervening component. When a component is referred to as being "disposed" on another component, it can be directly on the other component or can exist with another intervening component. The terms "vertical", "horizontal", "left", "right", and similar terms as used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] Figures 1-3 The main shaft box heat insulation structure of the application comprises a main shaft box 300, a gearbox 200, and a connecting plate 100 fixedly connected with the gearbox 200 and the main shaft box 300.

[0025] Specifically, the main shaft box 300 is hollow, and the gearbox 200 is located in the interior of the main shaft box 300.

[0026] As shown in Figure 3 The connecting plate 100 is provided with a cooling inlet 101, a cooling outlet 102, and a cooling circulation pipeline 103 located in the interior of the connecting plate 100, and the cooling inlet 101 and the cooling outlet 102 are in communication through the cooling circulation pipeline 103.

[0027] Specifically, the connecting plate 100 is made of a corrosion-resistant material. In the embodiment, the connecting plate 100 is made of stainless steel material. The material has high mechanical strength and better rust and corrosion resistance than ordinary steel.

[0028] In other embodiments, the corrosion-resistant material is aluminum alloy material (corrosion-resistant aluminum alloy) or glass steel (fiber-reinforced plastic).

[0029] The main shaft box heat insulation structure further comprises a motor 400 and a main shaft 500, the main shaft 500 is installed on the main shaft box 300, and the motor 400 is connected with the main shaft 500 and located on one side of the gearbox 200.

[0030] The main shaft box heat insulation structure further comprises a cutting fluid water pump assembly 600, and the cooling circulation pipeline 103 is connected with the cutting fluid water pump assembly 600.

[0031] Specifically, the cutting fluid water pump assembly 600 includes a cutting fluid water pump (not shown in the figure) and a cutting fluid burl pipe 601, the cutting fluid water pump is connected with the cooling inlet 101, and the cutting fluid burl pipe 601 is connected through the cooling outlet 102.

[0032] Specifically, the cooling outlet 102 is arranged along the outside of the main shaft box 300.

[0033] In other embodiments, the cooling medium of the coupling plate 100 is cooling oil, and a part of the heat of the coupling plate 100 is taken away by oil cooling, and another part of the heat of the coupling plate 100 is insulated by the heat insulation piece 700.

[0034] In a preferred embodiment, the cooling medium is cutting fluid, the temperature of the cutting fluid is generally equivalent to the ambient temperature, and the temperature of the cutting fluid is much lower than that of the oil cooling machine oil; at the same time, the main cost of the cutting fluid is water, the specific heat capacity of water is larger than that of oil, and more heat can be taken away in unit time, which better helps the heat dissipation of the gearbox 200.

[0035] The cutting fluid water pump assembly 600 is part of the machine tool complete equipment, and plays an important role in cooling, lubrication, chip removal and the like during machine tool machining. Therefore, by connecting the coupling plate 100 and the cutting fluid water pump assembly 600 in series, no additional cost is increased; and the cutting fluid water pump pressure of the machine tool cooling system is generally higher than that of the oil cooling machine, and under the condition of a certain pipe diameter, the higher the pressure, the greater the flow, and the more heat taken away in unit time, the better the heat dissipation performance; the coupling plate 100 is directly connected to the cutting fluid system, and the gearbox 200 can also be assisted to dissipate heat for the equipment without an oil cooling system, which is more economical, and can improve the thermal stability of the main shaft box 300 and the precision stability of the machine tool.

[0036] The main shaft box heat insulation structure further includes a heat insulation piece 700 located between the coupling plate 100 and the main shaft box 300. The material has a certain hardness, can be processed into the required shape, and has good heat insulation performance, which can effectively block the heat transfer between the coupling plate 100 and the main shaft box 300.

[0037] Specifically, the heat insulation piece 700 is a heat insulation film, and the heat insulation film covers the coupling plate 100. After the heat insulation film is covered, the heat insulation film can effectively prevent heat transfer. The heat insulation film is generally composed of multiple layers of materials, some of which (such as ceramic fiber, aerogel, etc.) have very low thermal conductivity. By heat insulating the coupling plate 100, the temperature field of the main shaft box 300 located around the coupling plate 100 can be better controlled, and the influence of temperature fluctuation on the precision of the machine tool can be reduced.

[0038] Specifically, the heat insulation piece 700 is a non-metallic material.

[0039] Specifically, the heat insulation member 700 is a heat insulation plate. In an embodiment, the heat insulation plate is a ceramic material. In other embodiments, the non-metallic material is glass fiber and foam material.

[0040] A machine tool comprises a spindle box heat insulation structure.

[0041] In use, the spindle box heat insulation structure in the application, the motor 400 is directly connected with the gearbox 200, and heat exchange exists between the motor 400 and the gearbox 200 during high-speed operation. The motor 400 is cooled by air cooling, and the gearbox 200 is generally connected to the oil cooling system of the machine tool, which plays a role in lubrication and heat dissipation for the gearbox 200. The gearbox 200 is directly installed on the coupling plate 100, and the heat of the gearbox 200 is quickly transferred to the coupling plate 100 during high-speed operation. The cooling circulation pipeline 103 is arranged in the coupling plate 100, and the heat insulation member 700 is arranged between the coupling plate 100 and the spindle box 300. The cooling inlet 101 of the coupling plate 100 is connected to the cutting fluid water pump assembly 600, the cooling inlet 101 is connected to the cutting fluid water pump, and the cooling outlet 102 of the coupling plate 100 is connected to the cutting fluid bamboo joint pipe 601. When the machine tool is normally working, the cutting fluid flows in the cooling circulation pipeline 103 in the coupling plate 100, takes away the heat on the coupling plate 100, and directly reduces the temperature of the coupling plate 100, indirectly takes away the heat of the gearbox 200, improves the cooling capacity of the cooling system for the gearbox 200, and directly reduces the heat transfer between the coupling plate 100 and the heat insulation member 700. The temperature of the coupling plate 100 can better block the heat transfer to the spindle box 300. The spindle box heat insulation structure in the application is arranged between the coupling plate 100 and the spindle box 300, and the heat insulation member 700 is arranged between the coupling plate 100 and the spindle box 300, which effectively blocks the heat transfer between the coupling plate 100 and the spindle box 300. The coupling plate 100 comprises the cooling inlet 101 and the cooling outlet 102 and the cooling circulation pipeline 103 arranged in the coupling plate 100. The cutting fluid water pump is connected to the cooling inlet 101, and the cutting fluid bamboo joint pipe 601 is connected to the cooling outlet 102. The cutting fluid water pump assembly 600 is part of the machine tool, and the coupling plate 100 and the cutting fluid water pump assembly 600 are connected in series, so that the heat dissipation efficiency is improved without increasing additional cost, and the precision stability of the machine tool is improved.

[0042] The above embodiments only express several embodiments of the application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which are equivalent modifications and evolutions of the above embodiments according to the essential technology of the application, and these all belong to the protection scope of the application.

Claims

1. A spindle box heat insulation structure, comprising a spindle box, a gearbox, and a connecting plate fixedly connected to the gearbox and the spindle box, characterized in that: The spindle box heat insulation structure also includes a heat insulation component located between the connecting plate and the spindle box. The connecting plate is provided with a cooling inlet, a cooling outlet, and a cooling circulation pipe located inside the connecting plate. The cooling inlet and the cooling outlet are connected through the cooling circulation pipe. The spindle box heat insulation structure also includes a cutting fluid pump assembly, and the cooling circulation pipe is connected to the cutting fluid pump assembly.

2. The spindle box heat insulation structure according to claim 1, characterized in that: The cutting fluid water pump assembly includes a cutting fluid water pump and a cutting fluid tube. The cutting fluid water pump is connected to the cooling inlet, and the cutting fluid tube is connected through the cooling outlet.

3. The spindle box heat insulation structure according to claim 1, characterized in that: The heat insulation component is a heat insulation film, which covers the connecting plate.

4. The spindle box heat insulation structure according to claim 1, characterized in that: The heat insulation component is made of non-metallic material.

5. The spindle box heat insulation structure according to claim 1, characterized in that: The heat insulation component is a heat insulation board.

6. The spindle box heat insulation structure according to claim 5, characterized in that: The heat insulation board is made of ceramic material.

7. The spindle box heat insulation structure according to claim 1, characterized in that: The connecting plate is made of corrosion-resistant material.

8. The spindle box heat insulation structure according to claim 7, characterized in that: The connecting plate is made of stainless steel.

9. The spindle box heat insulation structure according to claim 1, characterized in that: The spindle box heat insulation structure also includes a motor and a spindle. The spindle is mounted on the spindle box, and the motor is connected to the spindle and located on one side of the gearbox.

10. A machine tool, characterized in that: Includes the spindle box heat insulation structure as described in any one of claims 1 to 9.

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