Airtight seal structure of machine tool spindle

Abstract

The utility model discloses an airtight sealing structure of a machine tool spindle. The airtight sealing structure comprises a spindle sleeve, a bearing gland, a spindle head and a spindle head lantern ring, the main shaft sleeve, the bearing gland, the main shaft head and the main shaft head lantern ring are connected in sequence; an air inlet channel is formed in the main shaft sleeve, a first air inlet communicated with the air inlet channel is formed in the bearing gland, an annular air channel is formed in the main shaft head lantern ring, and a second air inlet communicated with the first air inlet is formed in the side wall of the annular air channel. The annular air channel, the bearing gland and the main shaft head form an air cavity. Through the design and application of the airtight sealing structure, the protection effect and the service life of the main shaft can be remarkably improved, and the operation performance and the reliability of the machine tool main shaft are effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tools, in particular to an air sealing structure for a main shaft of a machine tool. Background Art

[0002] CNC lathes are indispensable equipment in modern manufacturing, mainly used for high-precision and high-efficiency metal processing. In CNC lathes, the spindle is one of the core components, which is responsible for providing the rotational power required for the workpiece. The performance of the spindle directly affects the processing quality, processing efficiency and service life of the machine tool.

[0003] However, in the prior art, spindles often face problems such as water ingress, which are usually caused by poor sealing, improper cooling system design or improper operation. When water enters the spindle, it will cause bearing corrosion, poor lubrication and other related mechanical failures, further affecting the stability and processing accuracy of the machine tool. In addition, this water ingress may also cause premature damage to the spindle, increase maintenance costs and machine downtime, and have a serious impact on production efficiency.

[0004] Although there are some solutions on the market that try to solve this problem by improving sealing technology or optimizing cooling system design, these solutions often increase the complexity and cost of machine tools. Therefore, there is an urgent need to develop a solution that can effectively prevent water from entering the spindle without significantly increasing the cost and complexity of the machine tool. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an air sealing structure for a machine tool spindle, aiming to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a machine tool spindle air sealing structure, including a spindle sleeve, a bearing pressure cover, a spindle head and a spindle head collar; the spindle sleeve, the bearing pressure cover, the spindle head and the spindle head collar are connected in sequence;

[0007] An air inlet passage is provided on the main shaft sleeve, a first air inlet port connected to the air inlet passage is provided on the bearing cover, an annular air passage is provided in the main shaft head sleeve ring, a second air inlet port connected to the first air inlet port is provided on the side wall of the annular air passage, and an air chamber is formed by the annular air passage, the bearing cover and the main shaft head.

[0008] Preferably, the air inlet passage is connected with an air pipe joint.

[0009] Beneficial Effects

[0010] The utility model provides an air sealing structure for a machine tool spindle. The utility model connects a filtered air source to an air inlet channel, and external air first enters through the air inlet channel, and then flows into the annular air channel in sequence through a first air inlet and a second air inlet. The annular air channel, the bearing gland, and the spindle head together form an air chamber, and the air forms a stable air flow ring in the air chamber. The formation of this air flow ring effectively prevents water vapor and other impurities, such as dust, from entering the internal connection of the spindle, thereby reducing the risk of corrosion and poor lubrication of the bearing.

[0011] Through the design and application of the air-sealing structure, the protection effect and service life of the spindle can be significantly improved, and the operating performance and reliability of the machine tool spindle can be effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of a machine tool spindle air sealing structure described in the utility model.

[0013] Figure 2 The utility model is an exploded view of a machine tool spindle air sealing structure.

[0014] Figure 3 It is a side sectional structural schematic diagram of a machine tool spindle air sealing structure described in the utility model.

[0015] Figure 4 It is an isometric cross-sectional structural schematic diagram of a machine tool spindle air sealing structure described in the utility model.

[0016] Figure 5 for Figure 4 A is an enlarged schematic diagram.

[0017] Figure 6 for Figure 3 Enlarged schematic diagram of point B in the middle.

[0018] In the figure: 1-spindle sleeve, 11-air inlet channel, 12-air pipe joint, 2-bearing pressure cover, 21-first air inlet, 3-spindle head, 4-spindle head ring, 41-annular air channel, 42-second air inlet. DETAILED DESCRIPTION

[0019] 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.

[0020] This embodiment provides a machine tool spindle air seal structure, which is intended to solve the bearing corrosion and lubrication problems caused by water ingress into the spindle, thereby improving the service life of the spindle and the overall performance of the machine tool. Figures 1 to 4 The utility model provides a machine tool spindle air sealing structure, including a spindle sleeve 1, a bearing pressure cover 2, a spindle head 3 and a spindle head collar 4; the spindle sleeve 1, the bearing pressure cover 2, the spindle head 3 and the spindle head collar 4 are connected in sequence; thereby forming a complete air sealing system.

[0021] An air inlet channel 11 is provided on the main shaft sleeve 1 for introducing filtered air into the system. A first air inlet 21 is provided on the bearing gland 2 and communicates with the air inlet channel 11 to ensure smooth air entry. An annular air channel 41 is provided inside the main shaft head collar 4, and a second air inlet 42 is provided on its side wall and directly communicates with the first air inlet 21.

[0022] During operation, the air sealing structure of the machine tool spindle is installed at the front end of the spindle connected to the chuck, and the filtered air source is connected to the air inlet channel 11. The external air first enters through the air inlet channel 11, and then flows into the annular air channel 41 through the first air inlet 21 and the second air inlet 42 in sequence. The annular air channel 41, the bearing gland 2 and the spindle head 3 together form an air chamber, and the air forms a stable air flow ring in this air chamber. The formation of this air flow ring effectively prevents water vapor and other impurities, such as dust, from entering the internal connection of the spindle, thereby reducing the risk of corrosion and poor lubrication of the bearing.

[0023] Through the design and application of the air-sealing structure, the protection effect and service life of the spindle can be significantly improved, and the operating performance and reliability of the machine tool spindle can be effectively guaranteed.

[0024] Furthermore, the air inlet channel 11 is connected with an air pipe joint 12. The air pipe joint 12 is designed to safely and effectively connect an external air source to the air inlet channel 11, thereby achieving a stable supply of air. The introduction of the air pipe joint 12 not only enhances the interface adaptability and operational convenience of the system, but also ensures the continuity and sealing of the air flow by optimizing the joint design, preventing air leakage, and ensuring the efficient operation of the air-sealed structure.

[0025] By introducing the air pipe connector 12, the air sealing structure of the utility model can be compatible with a variety of different types of air source equipment, making the system more flexible and suitable for different working environments and conditions. In addition, the design of the air pipe connector 12 takes into account the needs of easy installation and maintenance, and the user can quickly connect or disconnect the air source, which is convenient for daily maintenance and troubleshooting.

[0026] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A machine tool spindle air sealing structure, comprising a spindle sleeve (1), characterized in that: It also includes a bearing cover (2), a spindle head (3) and a spindle head collar (4); the spindle sleeve (1), the bearing cover (2), the spindle head (3) and the spindle head collar (4) are connected in sequence; The spindle sleeve (1) is provided with an air inlet passage (11), the bearing cover (2) is provided with a first air inlet port (21) connected to the air inlet passage (11), an annular air passage (41) is provided in the spindle head ring (4), a second air inlet port (42) connected to the first air inlet port (21) is provided on the side wall of the annular air passage (41), and the annular air passage (41) forms an air chamber with the bearing cover (2) and the spindle head (3).

2. The machine tool spindle air sealing structure according to claim 1, characterized in that: The air intake passage (11) is connected to an air pipe joint (12).

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