Water-cooling motorized spindle device of precision numerically controlled lathe

Abstract

The utility model relates to the technical field of water-cooling motorized spindles, in particular to a water-cooling motorized spindle device of a precise numerical control lathe, which comprises a spindle body, a balance part used for improving the balance effect is arranged on the spindle body, and a first fixing end used for balance driving is arranged at one end of the spindle body. The other end of the main shaft body is provided with a second fixing end used for improving connection strength, and the second fixing end is provided with a covering metal piece used for protecting the end of the main shaft body. Through the arrangement of the thread opening and the covering metal piece, vibration caused by external precision parts can be reduced when the main shaft body is driven, meanwhile, the connecting strength of the second fixing end and the precision parts can be improved, the service life of the main shaft body is prolonged, the stability of the main shaft body in the driving process can be improved through the first bearing, and the service life of the main shaft body is prolonged. And the situation that operation of other parts is affected due to abnormal driving of the main shaft body due to large vibration in the driving process can be avoided, and the driving efficiency of the main shaft body can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water-cooled electric spindles, in particular to a water-cooled electric spindle device for a precision numerically controlled lathe. Background Art

[0002] The electric spindle is a new technology that has emerged in the field of CNC machine tools, integrating the machine tool spindle with the spindle motor. The spindle is a set of components, which includes the electric spindle itself and its accessories: the electric spindle, high-frequency frequency conversion device, oil mist lubricator, cooling device, built-in encoder, tool changer, etc. This transmission structure form of "integrating the spindle motor and the machine tool spindle" makes the spindle component relatively independent from the transmission system and overall structure of the machine tool.

[0003] The existing electric spindle is usually combined with multiple precision parts to form a certain component. When the electric spindle is driven, it is connected to the precision parts through existing fasteners. The existing fasteners will become loose after being driven by the electric spindle and deform according to the driving power of the electric spindle, causing the electric spindle to separate from the precision parts, thereby reducing the service life of the electric spindle.

[0004] Therefore, we designed a water-cooled electric spindle device for precision CNC lathes. Utility Model Content

[0005] The utility model aims to solve the problem of shortened service life in the prior art and provides a water-cooled electric spindle device for a precision CNC lathe.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A water-cooled electric spindle device for a precision CNC lathe comprises a spindle body, a balancing piece for improving the balancing effect is arranged on the spindle body, a first fixed end for balanced driving is arranged at one end of the spindle body, a second fixed end for improving the connection strength is arranged at the other end of the spindle body, a covering metal piece for protecting the end of the spindle body is arranged on the second fixed end, a plurality of aluminum alloy auxiliary rods for improving the rigidity of the spindle body are arranged on the second fixed end, and a second bearing for improving the driving stability is arranged on the first fixed end.

[0008] Preferably, the first fixed end is fixedly connected to one end of the main shaft body by welding.

[0009] Preferably, the second fixed end is fixedly connected to the main shaft body by welding, and a threaded opening for connecting a precision part is provided on the second fixed end.

[0010] Preferably, a through cavity is opened in the second fixed end, and one end of the main shaft body is against the inner wall of the through cavity, the covering metal part is fixedly connected to the outer wall of the through cavity by rivets, and the covering metal part is provided with a first bearing for improving driving efficiency, and the first bearing is provided with a plurality of first balls, and the first bearing is provided with a dispersion ring for alleviating driving wind resistance.

[0011] Preferably, both ends of the aluminum alloy auxiliary rod are fixedly connected to the first fixed end and the second fixed end through fixing members, and the aluminum alloy auxiliary rod is arranged in a ring shape.

[0012] Preferably, the inner wall of the second bearing abuts against the outer wall of the main shaft body, and a plurality of second balls for improving driving efficiency are arranged in the second bearing.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model can reduce the vibration caused by external precision parts when the spindle body is driven by setting the threaded thread and the covering metal parts, and at the same time can improve the connection strength between the second fixed end and the precision parts, thereby increasing the service life of the spindle body. The first bearing can improve the stability of the spindle body during driving, avoid large vibrations during driving, and cause abnormal driving of the spindle body and affect the operation of other parts, which can effectively improve the driving efficiency of the spindle body.

[0015] 2. The utility model improves the stability and connection strength between the first fixed end and the second fixed end by setting an aluminum alloy auxiliary rod, thereby avoiding affecting the fixation of the two during the driving process of the main shaft body, causing one of them to become loose and unable to function. The fixing piece can effectively improve the connection strength between the aluminum alloy auxiliary rod and the first fixed end and the second fixed end, thereby improving the practicality of the first fixed end and the second fixed end. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a water-cooled electric spindle device for a precision CNC lathe proposed by the utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of a water-cooled electric spindle device for a precision CNC lathe proposed by the utility model;

[0018] Figure 3 This is a front view of a water-cooled electric spindle device for a precision CNC lathe proposed by the utility model;

[0019] Figure 4 The utility model is a rear view of a water-cooled electric spindle device for a precision CNC lathe.

[0020] In the figure: 1. main shaft body; 2. balancing part; 3. first fixed end; 4. second fixed end; 5. threaded thread; 6. covering metal part; 7. first bearing; 8. dispersion ring; 9. aluminum alloy auxiliary rod; 10. fixing part; 11. second bearing; 12. second ball. DETAILED DESCRIPTION

[0021] Reference Figure 1-Figure 4 A water-cooled electric spindle device for a precision CNC lathe includes a spindle body 1. The spindle body 1 is a water-cooled electric spindle for a precision CNC lathe in the prior art. A balancing piece 2 is made of aluminum alloy material, and the surface is excavated by a frosting process, which is convenient for taking and installing the spindle body 1. The balancing piece 2 is fixed to the middle section of the spindle body 1 by welding.

[0022] One end of the spindle body 1 is provided with a first fixed end 3 for balanced driving. The first fixed end 3 is mainly used to stabilize the rear end of the spindle body 1 to ensure that the same frequency is maintained during the driving process of the spindle body 1. The first fixed end 3 is fixedly connected to one end of the spindle body 1 by welding, and welding can improve the connection strength between the two.

[0023] The other end of the spindle body 1 is provided with a second fixed end 4 for improving the connection strength. The second fixed end 4 is mainly used to stabilize the front end of the spindle body 1, and at the same time improve the connection strength between the front end of the spindle body 1 and the precision parts to avoid deformation and offset. The second fixed end 4 is fixedly connected to the spindle body 1 by welding. Welding can improve the connection strength between the two to avoid the second fixed end 4 being thrown out when the spindle body 1 is driven. The second fixed end 4 is provided with a threaded thread 5 for connecting precision parts. The threaded thread 5 is a threaded internal thread in the prior art, and the precision parts can be effectively connected through the thread.

[0024] The second fixed end 4 is provided with a covering metal piece 6 for protecting the end of the spindle body 1. The covering metal piece 6 is in the shape of a curved cover, which wraps the front end of the spindle body 1 inside to ensure that the front end of the spindle body 1 will not be impacted by external force for the first time. A through cavity is opened in the second fixed end 4, which is convenient for the second fixed end 4 to be fixed to the spindle body 1, and the opening specification is the same as that of the spindle body 1, and one end of the spindle body 1 is against the inner wall of the through cavity, in a tight state, and the covering metal piece 6 is fixedly connected to the outer wall of the through cavity by rivets. The rivet is a metal rivet used in the prior art for metal The rivets are ring-shaped to fix the covering metal part 6. The covering metal part 6 is provided with a first bearing 7 for improving the driving efficiency. The first bearing 7 is a prior art and is mainly used to improve the driving efficiency of the object. The first bearing 7 is provided with a plurality of first balls. The first balls are components set in the first bearing 7 and are prior art. The first bearing 7 is provided with a dispersion ring 8 for alleviating the driving wind resistance. The dispersion ring 8 is mainly used to disperse the resistance generated during the driving process of the main shaft body 1 to make the driving smoother.

[0025] The second fixed end 4 is provided with a plurality of aluminum alloy auxiliary rods 9 for improving the rigidity of the main shaft body 1. The aluminum alloy auxiliary rods 9 are mainly used to improve the stability of the first fixed end 3 and the second fixed end 4 on the main shaft body 1. Both ends of the aluminum alloy auxiliary rods 9 are fixedly connected to the first fixed end 3 and the second fixed end 4 through fixing members 10. The fixing members 10 are fasteners in the prior art, which improve the connection strength while facilitating later disassembly. The aluminum alloy auxiliary rods 9 are arranged in a ring shape, and a total of eight aluminum alloy auxiliary rods 9 are provided.

[0026] A second bearing 11 for improving driving stability is provided on the first fixed end 3. The second bearing 11 is a prior art and is mainly used to improve the driving stability of the main shaft body 1. The inner wall of the second bearing 11 is against the outer wall of the main shaft body 1, and a plurality of second balls 12 for improving driving efficiency are provided in the second bearing 11. The second balls 12 are internal components of the second bearing 11.

[0027] The working principle of the utility model is as follows: the first fixed end 3 and the second fixed end 4 are fixed to the main shaft body 1 by welding, and then the two are connected to each other by an aluminum alloy auxiliary rod 9 to ensure the stability of the main shaft body 1 during the driving process, and the covering metal part 6 is used to cover the front end of the main shaft body 1 through multiple rivets, and then the threaded thread 5 of the second fixed end 4 is aligned with the precision part, and it can be used after the fixation is completed.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water-cooled electric spindle device for a precision CNC lathe, comprising a spindle body (1), wherein the spindle body (1) is provided with a balancing member (2) for improving the balancing effect, wherein: A first fixed end (3) for balanced driving is provided at one end of the spindle body (1), a second fixed end (4) for improving connection strength is provided at the other end of the spindle body (1), a covering metal part (6) for protecting the end of the spindle body (1) is provided on the second fixed end (4), a plurality of aluminum alloy auxiliary rods (9) for improving the rigidity of the spindle body (1) are provided on the second fixed end (4), and a second bearing (11) for improving driving stability is provided on the first fixed end (3).

2. A water-cooled electric spindle device for a precision CNC lathe according to claim 1, characterized in that: The first fixed end (3) is fixedly connected to one end of the main shaft body (1) by welding.

3. The water-cooled electric spindle device for a precision CNC lathe according to claim 1, characterized in that: The second fixed end (4) is fixedly connected to the main shaft body (1) by welding, and a threaded opening (5) for connecting a precision part is provided on the second fixed end (4).

4. The water-cooled electric spindle device for a precision CNC lathe according to claim 1, characterized in that: A through cavity is provided in the second fixed end (4), and one end of the main shaft body (1) is against the inner wall of the through cavity. The covering metal part (6) is fixedly connected to the outer wall of the through cavity by rivets. The covering metal part (6) is provided with a first bearing (7) for improving driving efficiency, and the first bearing (7) is provided with a plurality of first balls. The first bearing (7) is provided with a dispersion ring (8) for alleviating driving wind resistance.

5. The water-cooled electric spindle device for a precision CNC lathe according to claim 1, characterized in that: The two ends of the aluminum alloy auxiliary rod (9) are fixedly connected to the first fixed end (3) and the second fixed end (4) via a fixing piece (10), and the aluminum alloy auxiliary rod (9) is arranged in a ring shape.

6. The water-cooled electric spindle device for a precision CNC lathe according to claim 1, characterized in that: The inner wall of the second bearing (11) abuts against the outer wall of the main shaft body (1), and a plurality of second balls (12) for improving driving efficiency are arranged in the second bearing (11).

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