Inverted installation novel special machine main shaft

Abstract

The utility model discloses an upside-down installed novel special machine main shaft, which relates to the technical field of main shafts, and comprises a shell, a main shaft body and a sealing cover, the main shaft body is connected in the shell through an installation hole, and the sealing cover is connected at the bottom end of the shell. When the novel inverted-installation special machine main shaft is used, a first seal is formed through clearance fit between the main shaft body and the cover plate, a second seal is formed by guiding compressed air into the annular air cavity, a third seal is formed through clearance fit between the shaft end cover and the inner wall of the sealing cover, and a fourth seal is formed through the O-shaped ring and the gland. The sealing performance of the main shaft is improved through multiple sealing structures, and cooling liquid, mist, airflow and dust are effectively prevented from entering; and the machining can be completed only by using the original parts of the product, so that the machining period is shortened, the production efficiency is improved, and the effects of conveniently stabilizing the sealing and improving the production efficiency are achieved when the special machine main shaft which is reversely mounted is used.

Description

Technical Field

[0001] The utility model relates to the technical field of special machine main shafts, in particular to a new type of special machine main shaft which is installed in an inverted manner. Background Art

[0002] A special-purpose machine spindle is a core component used to transmit power and achieve rotational motion within a specific piece of mechanical equipment. It typically consists of a spindle, supporting bearings, transmission components, and seals, and is crucial for ensuring proper operation and machining accuracy. The basic structure of a special-purpose machine spindle includes the spindle, supporting bearings, and transmission components. The spindle is the core of the entire system, responsible for transmitting power and achieving rotational motion. Supporting bearings support the spindle, reducing friction and wear, and ensuring spindle stability and precision. Transmission components such as belts, chains, or gears transmit power from the motor to the spindle. The design and manufacturing requirements for special-purpose machine spindles are extremely stringent, requiring consideration of multiple factors, such as rotational accuracy, static stiffness, and dynamic balance. Rotational accuracy refers to the deviation in spatial position of the spindle's instantaneous center of rotation from its ideal center of rotation when rotating at low speed and no load. Static stiffness refers to the spindle's ability to resist deformation under applied load. Dynamic balance ensures that the spindle's mass is evenly distributed, eliminating vibration and noise, even at high speed. Special spindles are widely used in various mechanical equipment, such as CNC equipment, automated production lines, precision machining equipment, etc.

[0003] During the use of special machine spindles, due to the special working environment and structure, special machine tool spindles often need to be redesigned and manufactured according to customer needs, which leads to a relatively long production cycle. In addition, due to the poor versatility of special machine spindles and limited customer demand, the manpower and processing costs are relatively high. In addition, special machine spindles are usually designed with only one sealing structure, which leads to poor sealing performance, thus affecting the use of special machine spindles. Utility Model Content

[0004] The purpose of the present invention is to provide a novel special machine spindle for inverted installation, so as to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new type of inverted special machine spindle, comprising a shell, a spindle body and a cover, wherein the spindle body is connected to the inside of the shell through a mounting hole, and the bottom end of the shell is connected to the cover, the bottom end of the outer wall of the cover is connected to a cover plate, and the outer wall of the cover plate is connected to the shaft end cover.

[0006] Preferably, an air inlet is provided on one side of the exterior of the cover, and an annular air cavity is provided on the side of the cover close to the shaft end cover, and the annular air cavity is connected to the air inlet.

[0007] Preferably, the inner wall of the shaft end cover is connected to the main shaft body, and a pressure cover is sleeved on the middle part of the outer wall of the main shaft body.

[0008] Preferably, the outer wall of the gland is connected to an O-ring via a groove, and the O-ring is made of rubber material.

[0009] Preferably, a large-diameter flange is processed on the top end of the outer wall of the shaft end cover, and compressed air is stored inside the annular air cavity.

[0010] Preferably, there is a clearance fit between the outer circle of the main shaft body and the inner diameter of the cover plate, and the cover plate is cut into two symmetrical parts by wire cutting.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: when the inverted special machine spindle is used, a first seal is formed by the clearance between the spindle body and the cover plate, a second seal is formed by introducing compressed air into the annular air cavity, a third seal is formed by the clearance between the shaft end cover and the inner wall of the cover, a fourth seal is formed by the O-ring and the pressure cover, and the sealing of the spindle is improved by the multi-sealing structure, effectively preventing the entry of coolant, mist, airflow and dust; and processing can be completed by only using the original components of the product, thereby shortening the processing cycle and improving production efficiency, thereby facilitating stable sealing and improving production efficiency when the inverted special machine spindle is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a top view;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model when viewed from above;

[0014] Figure 3 This is a schematic diagram of the three-dimensional cutaway structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the cover plate of the utility model.

[0016] In the figure: 1. Shell; 2. Spindle body; 3. Cover; 4. Air inlet; 5. Cover plate; 6. Annular air cavity; 7. Shaft end cover; 8. Pressure cover; 9. O-ring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1-4The utility model provides a technical solution: a new type of special machine spindle for inverted installation, comprising a shell 1, a spindle body 2 and a cover 3. The spindle body 2 is connected to the inside of the shell 1 through a mounting hole, and the bottom end of the shell 1 is connected to the cover 3, the bottom end of the outer wall of the cover 3 is connected to a cover plate 5, and the outer wall of the cover plate 5 is connected to the shaft end cover 7; an air inlet hole 4 is opened on one side of the outer side of the cover 3, and an annular air cavity 6 is opened on the side of the cover 3 close to the shaft end cover 7, and the annular air cavity 6 is connected to the air inlet hole 4; the inner wall of the shaft end cover 7 is connected to the spindle body 2, and a pressure cover 8 is sleeved on the middle part of the outer wall of the spindle body 2; the outer wall of the pressure cover 8 is connected to O through a groove. The O-ring 9 is made of rubber material; the top of the outer wall of the shaft end cover 7 is processed with a large diameter flange, and compressed air is stored in the annular air cavity 6; the outer circle of the main shaft body 2 and the inner diameter of the cover plate 5 are clearance matched, and the cover plate 5 is cut into two symmetrical parts by wire cutting; a groove corresponding to the O-ring 9 is opened on one side of the outer wall of the pressure cover 8, and a mounting hole corresponding to the main shaft body 2 is opened in the middle of the shell 1. The large outer diameter of the shaft end cover 7 and the inner wall of the cover 3 are matched with twelve small gaps; the cover 3 is fixed to the outer circle of the pressure cover 8 with a top screw, and the inner circumference of the shaft end cover 7 is connected to the outer circle of the shaft by a thread, and is prevented from loosening in the radial direction by a top screw.

[0019] In specific implementation, during the use of the inverted special machine spindle, the two-part cover plate 5 is pushed in from the outside to the inside in advance, and then fixed with countersunk screws. At this time, the inner diameter of the cover plate 5 is buckled into the groove of the spindle body 2. Then, the groove on the outer circle of the spindle body 2 and the inner diameter of the cover plate 5 are matched with each other to form the first seal. After that, the maze formed blocks most of the coolant and mist from entering the outside.

[0020] Because the top of the outer wall of the shaft end cover 7 is machined with a large-diameter flange, the inner wall of the cover 3 and the large-diameter boss of the shaft end cover 7 form an annular air cavity 6. Then, dry and clean compressed air is introduced into the annular air cavity 6 through the air inlet 4, thereby forming a second seal. The large outer diameter of the shaft end cover 7 and the inner wall of the cover 3 form a clearance fit, thereby effectively preventing the airflow from passing through, forming a third seal. Moreover, because the O-ring 9 is installed in the groove on the outer circumference of the pressure cover 8, it effectively prevents dust from entering the interior along the gap between the upper end face of the cover 3 and the lower end face of the housing 1. Therefore, the sealing performance of the main shaft is improved through the multi-sealing structure, effectively preventing the entry of coolant, mist, airflow and dust.

[0021] Because the changes are made on the spindles of other products, except for the shaft end cover 7, the sealing cover 3 and the cover plate 5, which need to be reprocessed, other components no longer need to be put into production. It is only necessary to borrow the original components of the product to complete the processing, thereby greatly shortening the processing cycle and improving production efficiency. Finally, when the inverted installed special machine spindle is used, it plays a role in facilitating stable sealing and improving production efficiency.

[0022] To sum up, when using this new type of inverted installation special machine spindle, first dock the spindle body 2 with the shell 1, then dock the pressure cover 8, the sealing cover 3, the cover plate 5 and the shaft end cover 7 with the spindle body 2 in sequence, and then complete the inverted installation of the spindle body 2. This is the existing technology and will not be elaborated on here. By arranging multiple sealing mechanisms on the outside of the spindle body 2, the sealing performance of the spindle is improved to prevent coolant, mist, airflow and dust from entering, thereby improving the sealing performance of the spindle. In addition, only the original components of the product need to be used to complete the processing, thereby shortening the processing cycle and improving production efficiency. It can meet the urgent needs of customers and has strong timeliness. Moreover, on the basis of the original product, only a small number of parts need to be replaced to meet the customer's usage requirements, which not only saves the cost of redesign, but also saves the time cost of reprogramming the machining process. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel inverted mounted special machine spindle, comprising a housing (1), a spindle body (2) and a cover (3), characterized in that: The interior of the housing (1) is connected to the main shaft body (2) via a mounting hole, and the bottom end of the housing (1) is connected to a cover (3), the bottom end of the outer wall of the cover (3) is connected to a cover plate (5), and the outer wall of the cover plate (5) is connected to a shaft end cover (7).

2. The novel inverted installation special machine spindle according to claim 1 is characterized in that: An air inlet (4) is provided on one side of the exterior of the cover (3), and an annular air cavity (6) is provided on one side of the cover (3) close to the shaft end cover (7), and the annular air cavity (6) is connected to the air inlet (4).

3. The novel inverted installation special machine spindle according to claim 2 is characterized in that: The inner wall of the shaft end cover (7) is connected to the main shaft body (2), and a pressure cover (8) is sleeved on the middle part of the outer wall of the main shaft body (2).

4. The novel inverted installation special machine spindle according to claim 3 is characterized by: The outer wall of the gland (8) is connected to an O-ring (9) via a groove, and the O-ring (9) is made of rubber material.

5. The novel inverted installation special machine spindle according to claim 4 is characterized in that: A large-diameter flange is machined on the top end of the outer wall of the shaft end cover (7), and compressed air is stored inside the annular air cavity (6).

6. The novel inverted installation special machine spindle according to claim 1 is characterized by: There is a clearance fit between the outer circle of the main shaft body (2) and the inner diameter of the cover plate (5), and the cover plate (5) is cut into two symmetrical parts by wire cutting.

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