Rotating sleeve of main driving shaft of machine tool

Abstract

The utility model relates to the technical field of machine tool equipment, in particular to a machine tool main driving shaft rotating sleeve which comprises a core shaft, a bearing seat and a bearing assembly, the core shaft penetrates through the bearing seat, the bearing assembly is arranged between the core shaft and the bearing seat, and a protection assembly is arranged at the end, close to the core shaft, of the bearing seat and comprises a protection cover and a water baffle. The protective cover is detachably arranged on the bearing seat, the end, away from the bearing seat, of the protective cover extends to the outer side of the mandrel, the protective cover covers a gap between the bearing seat and the mandrel, the mandrel and the protective cover slide and rotate mutually, and the water baffle is arranged around the outer wall of the protective cover and detachably connected with the bearing seat through a bolt. The protective assembly is arranged between the mandrel and the bearing seat, so that a gap at the joint of the mandrel and the bearing seat is protected, the protective cover and the water baffle in the protective assembly are annularly arranged around the mandrel, and the joint of the mandrel and the bearing seat is wrapped and protected.

Description

Technical Field

[0001] This utility model relates to the field of machine tool equipment technology, specifically to a rotating sleeve for a machine tool main drive shaft. Background Technology

[0002] Existing machine tools typically use a spindle chuck to hold the workpiece during machining, providing guidance, support, and positioning. However, during operation, the cutting and grinding processes by the tool introduce significant amounts of moisture, dust, and chips into the spindle and guide bushings, reducing its lifespan over time. Therefore, spindle sealing is crucial. While existing lathes usually incorporate a sealing structure at the spindle's output end, impurities can still enter the bearing housing and bearings from other locations, resulting in inadequate sealing.

[0003] Based on this, a rotating sleeve for the main drive shaft of a machine tool was designed to solve the problem. Utility Model Content

[0004] The purpose of this utility model is to provide a rotating sleeve for the main drive shaft of a machine tool to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the utility model provides the following technical solution: a rotating sleeve for a machine tool main drive shaft, comprising a spindle, a bearing housing, and a bearing assembly. The spindle passes through the bearing housing, and the bearing assembly is disposed between the spindle and the bearing housing. A protective assembly is provided at one end of the bearing housing near the spindle. The protective assembly includes a protective cover and a baffle plate. The protective cover is detachably mounted on the bearing housing, and the end of the protective cover away from the bearing housing extends to the outside of the spindle. The protective cover covers the gap between the bearing housing and the spindle. The spindle and the protective cover slide and rotate relative to each other. The baffle plate is disposed around the outer wall of the protective cover, and the baffle plate is detachably connected to the bearing housing by bolts. By providing a protective assembly between the spindle and the bearing housing, the gap at the connection between the spindle and the bearing housing is protected. The protective cover and the baffle plate in the protective assembly are arranged in a ring around the spindle, wrapping and protecting the connection between the spindle and the bearing housing.

[0006] Furthermore, an annular groove is provided between the protective cover and the spindle, and a first through hole communicating with the annular groove is provided on the protective cover.

[0007] By adopting the above technical solution, the first through hole and the annular groove facilitate the addition of filler material between the protective cover and the mandrel, lubricates the protective cover and the mandrel, and fills the gap to prevent impurities from entering.

[0008] Furthermore, the first through hole extends perpendicularly to the axis of the mandrel toward the upper side of the bearing seat.

[0009] By adopting the above technical solution, the first through hole is set facing upwards, so that the first through hole is far away from the processing platform, thereby preventing the debris that splashes during processing from entering the first through hole.

[0010] Furthermore, the water baffle is semi-circular and is located on the side of the protective cover away from the first through hole.

[0011] By adopting the above technical solution, the semi-circular baffle is located on the lower side of the protective cover, which is beneficial for effectively blocking the debris generated on the worktable located on the lower side of the spindle.

[0012] Furthermore, the bearing housing is provided with a bearing outer ring pressure block on the side away from the protective component. The bearing outer ring pressure block abuts and matches with the bearing assembly, and the bearing outer ring pressure block covers the gap between the bearing housing and the bearing assembly.

[0013] By adopting the above technical solution, the bearing assembly is protected by covering the connection between the bearing housing and the bearing assembly with the bearing outer ring pressure block.

[0014] Furthermore, a locking nut is threaded onto the mandrel, and the locking nut is located on the side of the bearing outer ring pressure block away from the bearing assembly, with the locking nut and the bearing outer ring pressure block abutting against each other.

[0015] By adopting the above technical solution, the outer ring of the bearing is easily fixed by the mutual abutment and matching of the locking nut and the bearing outer ring pressure block.

[0016] Compared with the prior art, the beneficial effects of this utility model are: by setting a protective component between the mandrel and the bearing seat, the gap at the connection between the mandrel and the bearing seat is protected. The protective cover and the baffle plate in the protective component are arranged in a ring around the mandrel, which wraps and protects the connection between the mandrel and the bearing seat. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1-Mandrel, 11-Locking nut, 2-Bearing housing, 21-Bearing outer ring pressure block, 3-Bearing assembly, 4-Protective assembly, 41-Protective cover, 42-Water baffle, 43-Annular groove, 44-First through hole. Detailed Implementation

[0022] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0023] Combination Figure 1-2 :

[0024] Reference Figure 1 , 2 As shown, a rotating sleeve for a machine tool main drive shaft includes a spindle 1, a bearing housing 2, and a bearing assembly 3. The spindle 1 passes through the bearing housing 2, and the bearing assembly 3 is located between the spindle 1 and the bearing housing 2. A protective assembly 4 is provided at one end of the bearing housing 2 near the spindle 1. The protective assembly 4 includes a protective cover 41 and a baffle plate 42. The protective cover 41 is detachably mounted on the bearing housing 2, and the end of the protective cover 41 away from the bearing housing 2 extends to the outside of the spindle 1, covering the gap between the bearing housing 2 and the spindle 1. The spindle 1 and the protective cover 41 slide and rotate relative to each other. The baffle plate 42 is arranged around the outer wall of the protective cover 41 and is detachably connected to the bearing housing 2 by bolts. By providing the protective assembly 4 between the spindle 1 and the bearing housing 2, the gap at the connection between the spindle 1 and the bearing housing 2 is protected. In the protective assembly 4, the protective cover 41 and the baffle plate 42 are arranged in a ring around the spindle 1, wrapping and protecting the connection between the spindle 1 and the bearing housing 2.

[0025] Reference Figure 1 , 2As shown, an annular groove 43 is provided between the protective cover 41 and the spindle 1, and a first through hole 44 communicating with the annular groove 43 is provided on the protective cover 41. The first through hole 44 extends perpendicularly to the axis of the spindle 1 towards the upper side of the bearing seat 2. The baffle plate 42 is semi-circular and is located on the side of the protective cover 41 away from the first through hole 44. The first through hole 44 and the annular groove 43 facilitate the addition of filler material between the protective cover 41 and the spindle 1 to lubricate the space between them and fill the gap to prevent impurities from entering. The first through hole 44 is oriented upwards, keeping it away from the machining platform to prevent debris from splashing during machining from entering the first through hole 44. The semi-circular baffle plate 42 is located on the lower side of the protective cover 41, which helps to effectively block debris generated on the worktable below the spindle 1.

[0026] Reference Figure 1 , 2 As shown, a bearing outer ring clamping block 21 is provided on the side of the bearing housing 2 away from the protective component 4. The bearing outer ring clamping block 21 abuts and matches with the bearing assembly 3, and covers the gap between the bearing housing 2 and the bearing assembly 3. A locking nut 11 is threaded onto the spindle 1. The locking nut 11 is located on the side of the bearing outer ring clamping block 21 away from the bearing assembly 3, and abuts and matches with the bearing outer ring clamping block 21. By covering the connection between the bearing housing 2 and the bearing assembly 3, the bearing assembly 3 is protected by the bearing outer ring clamping block 21. The abutting and matching of the locking nut 11 and the bearing outer ring clamping block 21 facilitates the fixation of the bearing outer ring clamping block 21.

[0027] Specific application examples of this utility model:

[0028] By setting a protective component 4 between the mandrel 1 and the bearing housing 2, the gap at the connection between the mandrel 1 and the bearing housing 2 is protected. The protective cover 41 and the baffle 42 in the protective component 4 are arranged in a ring around the mandrel 1 to wrap and protect the connection between the mandrel 1 and the bearing housing 2.

[0029] The first through hole 44 and the annular groove 43 facilitate the addition of filler material between the protective cover 41 and the mandrel 1, providing lubrication and filling the gap to prevent impurities from entering. The first through hole 44 is positioned upwards, away from the machining platform, thus preventing debris from entering during machining. A semi-circular baffle 42 is located below the protective cover 41, effectively blocking debris generated on the worktable below the mandrel 1.

[0030] The bearing assembly 3 is protected by covering the connection between the bearing housing 2 and the bearing assembly 3 with the bearing outer ring pressure block 21. The bearing outer ring pressure block 21 is secured by the locking nut 11 abutting against it.

[0031] In the description of the utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0032] In utility models, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in the utility model according to the specific circumstances.

[0033] Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotating sleeve for a machine tool main drive shaft, comprising a spindle (1), a bearing housing (2), and a bearing assembly (3), characterized in that: The mandrel (1) passes through the bearing housing (2), and the bearing assembly (3) is located between the mandrel (1) and the bearing housing (2). A protective assembly (4) is provided at one end of the bearing housing (2) near the mandrel (1). The protective assembly (4) includes a protective cover (41) and a baffle plate (42). The protective cover (41) is detachably mounted on the bearing housing (2), and the end of the protective cover (41) away from the bearing housing (2) extends to the outside of the mandrel (1). The protective cover (41) covers the gap between the bearing seat (2) and the spindle (1). The spindle (1) and the protective cover (41) slide and rotate relative to each other. The baffle plate (42) is arranged around the outer wall of the protective cover (41). The baffle plate (42) and the bearing seat (2) are detachably connected by bolts. The protective cover (41) and the baffle plate (42) are arranged in a ring around the spindle (1) to wrap and protect the connection between the spindle (1) and the bearing seat (2).

2. The machine tool main drive shaft rotating sleeve according to claim 1, characterized in that: An annular groove (43) is provided between the protective cover (41) and the spindle (1), and a first through hole (44) is provided on the protective cover (41) that communicates with the annular groove (43).

3. The machine tool main drive shaft rotating sleeve according to claim 2, characterized in that: The first through hole (44) extends perpendicular to the axis of the spindle (1) toward the upper side of the bearing seat (2).

4. The machine tool main drive shaft rotating sleeve according to claim 3, characterized in that: The water baffle (42) is semi-circular and is located on the side of the protective cover (41) away from the first through hole (44).

5. A machine tool main drive shaft rotating sleeve according to claim 1, characterized in that: The bearing housing (2) is provided with a bearing outer ring pressure block (21) on the side away from the protective component (4). The bearing outer ring pressure block (21) abuts against the bearing assembly (3) and covers the gap between the bearing housing (2) and the bearing assembly (3).

6. A machine tool main drive shaft rotating sleeve according to claim 5, characterized in that: A locking nut (11) is threaded onto the spindle (1). The locking nut (11) is located on the side of the bearing outer ring pressure block (21) away from the bearing assembly (3). The locking nut (11) and the bearing outer ring pressure block (21) abut against each other.

7. A machine tool main drive shaft rotating sleeve according to claim 1, characterized in that: The bearing assembly (3) is made of two sets of angular contact ball bearings, with an inner spacer and an outer spacer between the angular contact ball bearings.

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