Main shaft sealing structure of processing machine tool

Abstract

The utility model discloses a main shaft sealing structure of a processing machine tool, which belongs to the technical field of main shaft sealing and comprises a main shaft body, a first sealing element is arranged at one end of the outer side of the main shaft body, and a second sealing element is arranged at the other end of the outer side of the main shaft body. The first sealing piece and the second sealing piece are connected through a connecting assembly. Two external sealing rings are further arranged between the first sealing piece and the second sealing piece and located on the outer side of the main shaft body, and an L-shaped sealing ring is arranged at one end in the second sealing piece and located on the outer side of the main shaft body. Through a series of designs, the sealing performance can be improved, the situation that a gap is formed between the first sealing piece and the second sealing piece in the long-time using process of the first sealing piece and the second sealing piece, and consequently the sealing effect is reduced is prevented, and the stable sealing performance is kept for a long time.

Description

Technical Field

[0001] The utility model belongs to the technical field of spindle sealing, and in particular relates to a spindle sealing structure for a processing machine tool. Background Art

[0002] In order to process the workpiece, the machine tool generates relative motion between the workpiece and the tool. This motion can be divided into main motion and feed motion. The overlap of these two motions makes raw material processing possible. Originally, in the early days of the industrial revolution, parts were still processed manually. The invention of machine tools enabled machines to manufacture machines, and the era of factory explosion also came. The machine tool spindle is the axis on the machine tool that drives the workpiece or tool to rotate. It is mainly used to support transmission parts such as gears and pulleys in the machine, transmit motion and torque, and is a key structure on the machine tool.

[0003] The spindle sealing structure of a machining machine tool is a key component to ensure the normal operation of the machine tool, and its sealing performance directly affects the service life and operating efficiency of the machine tool. In the prior art, there are some problems with the spindle sealing structure, such as the decline in sealing effect after long-term use, which may cause lubricating oil leakage and damage the performance of the machine tool. For this reason, we design a spindle sealing structure for a machining machine tool to provide another technical solution to the above technical problems. Utility Model Content

[0004] The utility model aims to provide a spindle sealing structure for a processing machine tool, so as to solve the problems of the prior art in the use process proposed in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a spindle sealing structure of a processing machine tool, comprising a spindle body, a first sealing member is arranged at one end of the outer side of the spindle body, a second sealing member is arranged at the other end of the outer side of the spindle body, and the first sealing member and the second sealing member are connected by a connecting assembly;

[0006] Two external sealing rings are arranged between the first sealing member and the second sealing member and on the outside of the main shaft body.

[0007] Preferably, an L-shaped sealing ring is provided at one end inside the second sealing member and located outside the main shaft body, and an L-shaped sealing ring is provided inside the middle portion of the second sealing member and located outside the main shaft body.

[0008] Preferably, a deformable sealing block is arranged inside the first sealing component and outside the main shaft body, one end of the deformable sealing block is provided with a first inclined surface, and the end of the second sealing component close to the built-in sealing ring is provided with a second inclined surface adapted to the deformable sealing block.

[0009] Preferably, the connecting assembly includes a hexagonal block, a transverse connecting rod is fixed to one end of the hexagonal block, a transverse threaded rod is fixed to one end of the transverse connecting rod, the outer side of the transverse threaded rod is threadedly connected to a hexagonal nut block, and the transverse connecting rod passes through the interior of the first seal and the second seal and is connected to the first seal and the second seal by sliding.

[0010] Preferably, a hexagonal groove adapted to the hexagonal nut block is opened inside the second seal, so that the hexagonal nut block can enter the interior of the second seal, and an annular moving part is arranged on the outer side of the inner hexagonal block. The annular moving part is located inside the first seal and is slidably connected to the first seal, and a plurality of rigid springs are fixed to one end of the annular moving part.

[0011] Preferably, a transverse sliding block is fixed on the outer side of the annular moving member, a transverse sliding groove adapted to the annular moving member is provided inside the first sealing member, and the annular moving member and the first sealing member are slidably connected via the transverse sliding groove;

[0012] A plurality of gear blocks are fixed on the outer side of the inner hexagon block, and a gear groove adapted to the gear blocks is provided inside the annular moving part.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The setting of two external sealing rings can improve the sealing effect between the first seal and the second seal. Through the setting of the L-shaped sealing ring and the internal sealing ring, the main shaft body can be sealed inside the second seal, which can improve the sealing performance and prevent the first seal and the second seal from causing a gap between the first seal and the second seal during long-term use, resulting in a decrease in the sealing effect, thereby maintaining stable sealing performance for a longer period of time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the first sealing member and the second sealing member of the utility model;

[0017] Figure 3 This is a structural cross-sectional view of the first sealing member and the second sealing member of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the hexagonal block and the annular moving part of the utility model.

[0019] In the figure: 1. main shaft body; 2. first sealing member; 3. second sealing member; 4. external sealing ring; 5. L-shaped sealing ring; 6. internal sealing ring; 7. deformable sealing block; 8. internal hexagonal block; 9. transverse connecting rod; 10. transverse threaded rod; 11. hexagonal nut block; 12. annular moving member; 13. rigid spring. 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] Reference Figure 1-4 , a spindle sealing structure for a machining machine tool, comprising a spindle body, a first sealing member is arranged at one end of the outer side of the spindle body, a second sealing member is arranged at the other end of the outer side of the spindle body, and the first sealing member and the second sealing member are connected by a connecting assembly;

[0022] Two external sealing rings are also arranged between the first sealing member and the second sealing member and on the outside of the main shaft body;

[0023] An L-shaped sealing ring is arranged at one end of the second sealing member and located on the outside of the main shaft body, and an L-shaped sealing ring is arranged inside the middle part of the second sealing member and located on the outside of the main shaft body. The L-shaped sealing ring and the built-in sealing ring can improve the sealing performance between the second sealing member and the main shaft body, thereby improving the sealing effect;

[0024] A deformable sealing block is arranged inside the first sealing member and on the outside of the main shaft body, a first inclined surface is provided at one end of the deformable sealing block, and a second inclined surface adapted to the deformable sealing block is provided at one end of the second sealing member close to the built-in sealing ring, and the first inclined surface and the second inclined surface are arranged so that when the second sealing member moves toward the first sealing member, the deformable sealing block can be deformed, so that the deformable sealing block can move toward the outside of the main shaft body, thereby improving the sealing effect between the main shaft body and the deformable sealing block;

[0025] The connecting assembly includes a hexagonal block, a transverse connecting rod is fixed to one end of the hexagonal block, a transverse threaded rod is fixed to one end of the transverse connecting rod, a hexagonal nut block is threadedly connected to the outer side of the transverse threaded rod, and the transverse connecting rod passes through the interior of the first seal and the second seal and is connected to the first seal and the second seal by sliding;

[0026] A hexagonal groove adapted to the hexagonal nut block is provided inside the second sealing member, so that the hexagonal nut block can enter the inside of the second sealing member, and an annular moving member is provided on the outside of the inner hexagonal block. The annular moving member is located inside the first sealing member and is slidably connected to the first sealing member, and a plurality of rigid springs are fixed to one end of the annular moving member;

[0027] A transverse sliding block is fixed on the outer side of the annular moving member, a transverse sliding groove adapted to the annular moving member is provided inside the first sealing member, and the annular moving member and the first sealing member are slidably connected via the transverse sliding groove;

[0028] A plurality of gear blocks are fixed on the outer side of the hexagonal block, and a gear groove adapted to the gear block is provided inside the annular movable member. When the hexagonal block is located inside the annular movable member, the hexagonal block can be prevented from rotating, thereby forming a self-locking of the hexagonal block, thereby preventing the hexagonal block from rotating when operating for a long time, thereby affecting the sealing effect between the first seal and the second seal.

[0029] Through a series of designs, the sealing performance can be improved, and the first seal and the second seal can be prevented from causing a gap between the first seal and the second seal during long-term use, thereby avoiding a decrease in the sealing effect due to the gap caused by friction, thereby maintaining stable sealing performance for a longer period of time, improving the durability of the main shaft, and ensuring its service life.

[0030] Working principle: When the first seal and the second seal need to be disassembled, the annular moving part is pushed in the direction of the second seal. The movement of the annular moving part causes the rigid spring to deform under force, thereby enabling the annular moving part to move out of the outer side of the hexagonal block, so that the hexagonal block can rotate inside the first seal, thereby enabling the first seal and the second seal to be disassembled;

[0031] When the second seal moves toward the first seal, the sealing effect between the first seal and the second seal can be improved by the setting of two external sealing rings, and the main shaft body can be sealed inside the second seal by the setting of the L-shaped sealing ring and the internal sealing ring. The movement of the second seal causes the deformable sealing block to deform through the setting of the first inclined surface and the second inclined surface. The deformation of the deformable sealing block enables the deformable sealing block to move toward the main shaft body, thereby enabling the deformable sealing block to fit against the outer side of the main shaft body, thereby improving the sealing effect.

[0032] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine different embodiments or examples described in the present invention and features of different embodiments or examples without contradiction.

[0034] 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. A spindle sealing structure for a processing machine tool, characterized in that: It comprises a main shaft body (1), a first sealing member (2) is arranged at one end of the outside of the main shaft body (1), a second sealing member (3) is arranged at the other end of the outside of the main shaft body (1), and the first sealing member (2) and the second sealing member (3) are connected via a connecting assembly; Two external sealing rings (4) are also arranged between the first sealing member (2) and the second sealing member (3) and on the outside of the main shaft body (1).

2. The spindle sealing structure of a processing machine tool according to claim 1, characterized in that: An L-shaped sealing ring (5) is provided at one end of the interior of the second sealing member (3) and located on the outside of the main shaft body (1), and an L-shaped sealing ring (5) is provided at the interior of the middle portion of the second sealing member (3) and located on the outside of the main shaft body (1).

3. The spindle sealing structure of a processing machine tool according to claim 2, characterized in that: A deformable sealing block (7) is arranged inside the first sealing member (2) and outside the main shaft body (1); a first inclined surface is provided at one end of the deformable sealing block (7); and a second inclined surface adapted to the deformable sealing block (7) is provided at one end of the second sealing member (3) close to the built-in sealing ring (6).

4. The spindle sealing structure of a processing machine tool according to claim 1, characterized in that: The connection assembly comprises a hexagonal block (8), one end of which is fixed with a transverse connecting rod (9), one end of which is fixed with a transverse threaded rod (10), the outer side of the transverse threaded rod (10) is threadedly connected with a hexagonal nut block (11), and the transverse connecting rod (9) passes through the interior of the first sealing member (2) and the second sealing member (3) and is connected to the first sealing member (2) and the second sealing member (3) by sliding.

5. The spindle sealing structure of a processing machine tool according to claim 4, characterized in that: The interior of the second sealing member (3) is provided with a hexagonal groove adapted to the hexagonal nut block (11), so that the hexagonal nut block (11) can enter the interior of the second sealing member (3); an annular moving member (12) is arranged on the outer side of the inner hexagonal block (8); the annular moving member (12) is located inside the first sealing member (2) and is slidably connected to the first sealing member (2); and a plurality of rigid springs (13) are fixed to one end of the annular moving member (12).

6. The spindle sealing structure of a processing machine tool according to claim 5, characterized in that: A transverse sliding block is fixed on the outer side of the annular moving member (12), a transverse sliding groove adapted to the annular moving member (12) is provided inside the first sealing member (2), and the annular moving member (12) and the first sealing member (2) are slidably connected via the transverse sliding groove; A plurality of gear blocks are fixed on the outer side of the hexagonal block (8), and a gear groove adapted to the gear blocks is provided inside the annular moving member (12).

Images