Electric spindle structure for motor machining grinding machine tool

Abstract

The utility model relates to the technical field of motorized spindles, and discloses a motorized spindle structure for a motor machining grinding machine tool, which comprises a motorized spindle shell, a weight reduction groove is arranged on the peripheral side of the motorized spindle shell, radiating fins are arranged in the weight reduction groove, a condenser pipe is annularly wound in the weight reduction groove, an upper shell is arranged on the upper side of the motorized spindle shell, and a lower shell is arranged on the lower side of the motorized spindle shell. An exhaust fan is installed at the upper end of the upper shell, a lower shell is arranged on the lower side of the electric spindle shell, and an air inlet hole is formed in the bottom of the lower shell. When the heat dissipation fins in the weight reduction grooves dissipate heat of the motorized spindle shell, the cold circulation equipment is matched with the condensation pipe to dissipate heat of the motorized spindle shell and the heat dissipation fins, and the heat dissipation fins can be effectively cooled in cooperation with accessories in the upper shell and the lower shell on the peripheral side of the motorized spindle shell, so that the heat dissipation efficiency of the motorized spindle shell is improved, and the service life of the motorized spindle shell is prolonged. The situation that the heat dissipation effect of the condensation pipe and the heat dissipation fins is reduced due to the fact that air on the peripheral sides of the heat dissipation fins does not circulate is avoided, and the heat dissipation effect of the electric spindle is effectively improved through the electric spindle structure.

Description

Technical Field

[0001] The utility model relates to the technical field of electric spindles, in particular to an electric spindle structure for a motor processing and grinding machine tool. Background Art

[0002] The electric spindle is a new technology that has emerged in the field of CNC machine tools in recent years. It integrates the machine tool spindle and spindle motor. The main transmission system of high-speed CNC machine tools has eliminated the pulley transmission and gear transmission. The machine tool spindle is directly driven by a built-in electric motor, thereby shortening the length of the machine tool main transmission chain to zero and realizing the "zero transmission" of the machine tool.

[0003] During the operation of the electric spindle, a cooling device is required to cool down and protect the internal electrical components. The cooling efficiency of the existing cooling device is low. When the electric spindle works for a long time, the heat generated is large, so the cooling device cannot meet the cooling demand of the electric spindle, which reduces the protection performance of the electric spindle. Therefore, those skilled in the art provide an electric spindle structure for a motor processing and grinding machine tool to solve the problems raised in the above background technology. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides an electric spindle structure for a motor processing and grinding machine tool to solve the problem that the cooling efficiency of the existing cooling device is low and cannot meet the cooling demand for the electric spindle.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric spindle structure for a motor processing and grinding machine tool, comprising an electric spindle housing, a weight-reducing groove is provided on the circumferential side of the electric spindle housing, a heat dissipation fin is installed in the weight-reducing groove, a condenser is annularly wound in the weight-reducing groove, an upper shell is provided on the upper side of the electric spindle housing, an exhaust fan is installed on the upper end of the upper shell, a lower shell is provided on the lower side of the electric spindle housing, an air inlet is provided at the bottom of the lower shell, and a cold circulation device is provided in front of the electric spindle housing.

[0008] Preferably, the two ends of the condenser are connected to a cold circulation device, and the cold circulation device cooperates with the condenser to dissipate heat from the electric spindle housing and the cooling fins.

[0009] Preferably, the upper shell and the lower shell are connected to the electric spindle shell by screws, thereby forming a wrapping shape to surround the heat dissipation fins on the peripheral side of the electric spindle shell. In conjunction with the accessories in the upper shell and the lower shell on the peripheral side of the electric spindle shell, the heat dissipation fins can be effectively cooled.

[0010] Preferably, a filter plate is installed at the bottom of the air inlet.

[0011] Preferably, the heat dissipation fins are distributed in a ring shape in the weight-reducing groove, and the condenser tube is connected through the heat dissipation fins.

[0012] Preferably, one side of the back of the cold circulation device is connected to the upper shell, and the other side of the back of the cold circulation device is connected to the lower shell, thereby further stabilizing the upper shell and the lower shell.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides an electric spindle structure for a motor processing and grinding machine tool, which has the following beneficial effects:

[0015] Through the design, the heat dissipation fins in the weight reduction grooves dissipate heat for the electric spindle housing, while the cold circulation equipment cooperates with the condenser to dissipate heat for the electric spindle housing and the heat dissipation fins. In addition, in conjunction with the accessories in the upper housing and the lower housing around the electric spindle housing, the heat dissipation fins can be effectively cooled to avoid the reduction of the heat dissipation effect of the condenser and the heat dissipation fins due to the lack of air circulation around the heat dissipation fins. This electric spindle structure effectively improves the heat dissipation effect of the electric spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an electric spindle structure for a motor processing and grinding machine tool provided in an embodiment of the present application.

[0017] Figure 2 It is a schematic structural diagram of an upper housing in an electric spindle structure for a motor processing and grinding machine tool provided in an embodiment of the present application.

[0018] Figure 3 It is a structural schematic diagram of a lower housing in an electric spindle structure for a motor processing and grinding machine provided in an embodiment of the present application.

[0019] In the figure: 1. electric spindle housing; 2. weight reduction groove; 3. heat dissipation fins; 4. condenser; 5. cold circulation equipment; 6. upper housing; 601. exhaust fan; 7. lower housing; 701. air inlet; 8. filter plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a technical solution, an electric spindle structure for a motor processing grinding machine tool, please refer to Figure 1 , Figure 2 , comprising an electric spindle housing 1, a weight-reducing groove 2 is provided on the peripheral side of the electric spindle housing 1, a heat dissipation fin 3 is installed in the weight-reducing groove 2, a condenser 4 is annularly wound in the weight-reducing groove 2, an upper shell 6 is provided on the upper side of the electric spindle housing 1, an exhaust fan 601 is installed on the upper end of the upper shell 6, a lower shell 7 is provided on the lower side of the electric spindle housing 1, an air inlet hole 701 is provided at the bottom of the lower shell 7, and a cold circulation device 5 is provided in front of the electric spindle housing 1, please refer to Figure 2 , Figure 3 The two ends of the condenser 4 are connected to the cold circulation equipment 5, and the cold circulation equipment 5 cooperates with the condenser 4 to dissipate the heat of the electric spindle housing 1 and the heat dissipation fins 3. The upper shell 6 and the lower shell 7 are connected to the electric spindle housing 1 by screws, thereby forming a wrapping shape to surround the heat dissipation fins 3 on the side of the electric spindle housing 1. In conjunction with the accessories in the upper shell 6 and the lower shell 7 on the side of the electric spindle housing 1, the heat dissipation fins 3 can be effectively cooled.

[0022] See also Figure 2 , Figure 3 The heat dissipation fins 3 are distributed in a ring shape in the weight reduction groove 2, the condenser 4 is connected to the heat dissipation fins 3, one side of the back of the cold circulation device 5 is connected to the upper shell 6, and the other side of the back of the cold circulation device 5 is connected to the lower shell 7, thereby further stabilizing the upper shell 6 and the lower shell 7. A filter plate 8 is installed at the bottom of the air inlet 701 to filter flying chips during grinding.

[0023] In the present invention, a weight-reducing groove 2 is provided on the electric spindle housing 1 of the electric spindle, a heat dissipation fin 3 is installed on the peripheral side wall of the weight-reducing groove 2, a condenser tube 4 is annularly wound in the weight-reducing groove 2, the condenser tube 4 is connected through the heat dissipation fin 3 in the weight-reducing groove 2, and an upper shell 6 and a lower shell 7 are respectively provided on the outside of the electric spindle housing 1;

[0024] An exhaust fan 601 is installed on the top of the upper shell 6, and an air inlet hole 701 is opened at the bottom of the lower shell 7. After the upper shell 6 and the lower shell 7 are connected to the electric spindle housing 1 by screws, a cold circulation device 5 is installed on the front side of the two shells. The device further stabilizes the upper shell 6 and the lower shell 7. Then, the end of the condenser tube 4 protruding from the two shells is connected to the cold circulation device 5. When the heat dissipation fins 3 in the weight reduction groove 2 dissipate heat for the electric spindle housing 1, the cold circulation device 5 cooperates with the condenser tube 4 to dissipate heat for the electric spindle housing 1 and the heat dissipation fins 3. Compared with the traditional method of cooling by coolant or air cooling in the shell, this method has better heat dissipation effect.

[0025] In addition, in conjunction with the accessories in the upper shell 6 and the lower shell 7 around the electric spindle housing 1, the cooling fins 3 can be effectively cooled to avoid air blockage around the cooling fins 3, which may reduce the cooling effect of the condenser 4 and the cooling fins 3.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] In this document, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric spindle structure for a motor-driven grinding machine tool, comprising an electric spindle housing (1), characterized in that: The electric spindle housing (1) is provided with a weight-reducing groove (2) on its circumferential side, a heat-dissipating fin (3) is installed in the weight-reducing groove (2), a condenser (4) is wound in an annular manner in the weight-reducing groove (2), an upper shell (6) is provided on the upper side of the electric spindle housing (1), an exhaust fan (601) is installed on the upper end of the upper shell (6), a lower shell (7) is provided on the lower side of the electric spindle housing (1), an air inlet hole (701) is provided at the bottom of the lower shell (7), and a cold circulation device (5) is provided in front of the electric spindle housing (1).

2. The electric spindle structure for a motor-driven grinding machine tool according to claim 1, characterized in that: The upper housing (6) and the lower housing (7) are both connected to the electric spindle housing (1) via screws.

3. The electric spindle structure for a motor-driven grinding machine tool according to claim 1, characterized in that: A filter plate (8) is installed at the bottom of the air inlet hole (701).

4. The electric spindle structure for a motor-driven grinding machine tool according to claim 1, characterized in that: The heat dissipation fins (3) are distributed in a ring shape in the weight-reducing groove (2), and the condenser tube (4) is connected to the heat dissipation fins (3) through-and-through.

5. The electric spindle structure for a motor-driven grinding machine tool according to claim 1, characterized in that: One side of the back of the cold circulation device (5) is connected to the upper shell (6), and the other side of the back of the cold circulation device (5) is connected to the lower shell (7).

6. The electric spindle structure for a motor-driven grinding machine tool according to claim 1, characterized in that: The two ends of the condenser tube (4) are connected to a cold circulation device (5).

Images