A dual-channel air blowing mechanism at the front end of the spindle

Abstract

The present invention discloses a dual-channel air blowing mechanism at the front end of a spindle, which includes a rotor, a front end cover, a waterproof cover, a fixed disk and a tooth locking disk. The tooth locking disk is sleeved outside the rotor and the two are fixedly connected. The front end cover is sleeved outside the rotor and there is a first gap between the two. The front end cover is located on the front side of the tooth locking disk. The fixed disk is fixedly connected to the front end cover and is sleeved outside the tooth locking disk. The waterproof cover is embedded inside the front end cover and is sleeved outside the rotor with a third gap formed therebetween. An air inlet hole is provided on the fixed disk, a first air passage is provided inside the front end cover, and a second air passage is provided inside the waterproof cover; a plurality of third air passages are provided inside the tooth locking disk, a plurality of convex platforms are formed on the front end face of the rotor, and a plurality of fourth air passages are provided inside the rotor. The present invention can play an effective cleaning role during the operation of the spindle and during the tool change process, thereby improving the performance of the equipment.

Description

Technical Field

[0001] The present invention relates to a spindle, and particularly to a dual-channel air seal mechanism at the front end of the spindle. Background Art

[0002] In the prior art, dust and iron filings are likely to adhere to the front end face of the spindle, which is not only difficult to clean but also affects the use of the tool. Especially in an automatic tool change system, it is necessary to blow air on the end face of the tool holder while changing the tool. In the traditional spindle structure, generally only one circuit is used for end face air blowing, and its purpose is to directly form an air curtain at the front end of the spindle to prevent splashing water and dust from the outside from entering the interior of the spindle. However, since there is not only side wall contact but also end face contact between the tool holder and the rotor, and the end face part is not cleaned in a timely and effective manner, dirt is likely to accumulate between the end faces of the rotor and the tool holder, which not only affects the spindle performance but also makes it difficult to clean later. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a dual-channel air blowing mechanism at the front end of the spindle that can play an effective cleaning role during both the operation of the spindle and the tool change process, thereby improving the performance of the equipment, in view of the deficiencies of the prior art.

[0004] To solve the above technical problem, the present invention adopts the following technical solutions.

[0005] A dual-channel air blowing mechanism at the front end of a spindle, which comprises a rotor, a front end cover, a waterproof cover, a fixed disk and a tooth locking disk. The tooth locking disk is sleeved outside the rotor and fixedly connected to the rotor. The front end cover is sleeved outside the rotor and there is a first gap between them. The front end cover is located on the front side of the tooth locking disk. The fixed disk is fixedly connected to the front end cover. The fixed disk is sleeved outside the tooth locking disk, and the tooth locking disk can rotate relative to the fixed disk. The waterproof cover is embedded inside the front end cover. The waterproof cover is sleeved outside the rotor and a third gap is formed between them. An air inlet hole is opened on the fixed disk. A first air passage is opened inside the front end cover. A second air passage is opened inside the waterproof cover. The air inlet hole, the first air passage, the second air passage and the third gap are communicated in sequence so as to form an annular air seal between the rotor and the waterproof cover. A plurality of third air passages are opened inside the tooth locking disk. A plurality of convex platforms are formed on the front end face of the rotor. A plurality of fourth air passages are opened inside the rotor. The fourth air passages correspond to the convex platforms one by one, and the front end openings of the fourth air passages are located on the front end faces of the convex platforms. The third air passages correspond to the fourth air passages one by one and are communicated with each other. A tooth locking ring is embedded on the rear end face of the front end cover. The tooth locking ring is arranged opposite to the tooth locking disk. An annular air guiding groove is formed on the rear end face of the tooth locking ring. A plurality of vertical air holes are opened inside the tooth locking ring. A fifth air passage which is communicated in sequence is opened inside the fixed disk and the front end cover. The fifth air passage, the plurality of vertical air holes and the annular air guiding groove are communicated in sequence. All the plurality of third air passages are communicated with the annular air guiding groove. The air flow injected into the fifth air passage is discharged towards the front ends of the convex platforms through the plurality of vertical air holes, the annular air guiding groove, the third air passages and the fourth air passages in sequence.

[0006] Preferably, an inner ring groove is opened on the inner ring side of the waterproof cover. The second air passage is communicated with the inner ring groove, and an air bag I is formed inside the inner ring groove.

[0007] Preferably, an inner step opening is opened on the inner ring side of the front end cover. An air bag II is formed inside the inner step opening.

[0008] Preferably, the third air passage is in an inverted "L" shape.

[0009] Preferably, the fourth air passage is in a "7" shape.

[0010] In the dual-channel air blowing mechanism at the front end of the spindle disclosed in the present invention, air flow is introduced through the air inlet hole, and this air flow blows outwards successively via the first air duct, the second air duct, and the third gap, so as to form an annular air seal between the rotor and the waterproof cover. By utilizing this annular air seal, an immediate cleaning effect can be achieved at the front end of the spindle to prevent dust, debris, water, etc. from entering the interior of the spindle. When the spindle performs a tool change operation, air flow is injected into the fifth air duct, and this air flow discharges towards the front end of the boss successively via a plurality of third air ducts and the fourth air duct, so as to blow out air flow towards the end face position between the rotor and the tool shank. This air flow can blow out the dirt adhering between the end face of the rotor and the end face of the tool shank, thereby achieving effective cleaning during the tool change process. Compared with the prior art, the present invention can achieve an effective cleaning effect both during the operation of the spindle and during the tool change process in the manner of dual-channel air blowing, thereby improving the overall performance and service life of the equipment and better meeting the application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a cross-sectional view of the dual-channel air blowing mechanism at the front end of the spindle of the present invention Figure 1 ;

[0012] Figure 2 is a cross-sectional view of the dual-channel air blowing mechanism at the front end of the spindle of the present invention Figure 2 ;

[0013] Figure 3 is Figure 2 an enlarged view of part A in

[0014] Figure 4 is a structural diagram of the fixed disk;

[0015] Figure 5 is a cross-sectional view of the rotor and the tooth locking disk;

[0016] Figure 6 is a structural diagram of the tooth locking disk;

[0017] Figure 7 is a structural diagram of the rotor;

[0018] Figure 8 is a structural diagram of the tooth locking ring;

[0019] Figure 9 is a cross-sectional view of the front end cover;

[0020] Figure 10 is a perspective view of the front end cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present invention will be described in more detail below with reference to the drawings and embodiments.

[0022] The present invention discloses a dual-channel air blowing mechanism at the front end of a spindle. In combination withFigures 1 to 10 As shown in the figure, it includes a rotor 1, a front end cover 2, a waterproof cover 3, a fixing plate 4 and a tooth locking disc 5. The tooth locking disc 5 is sleeved outside the rotor 1 and the two are fixedly connected. The front end cover 2 is sleeved outside the rotor 1 and there is a first gap 10 between them. The front end cover 2 is located on the front side of the tooth locking disc 5. The fixing plate 4 is fixedly connected to the front end cover 2. The fixing plate 4 is sleeved outside the tooth locking disc 5, and the tooth locking disc 5 can rotate relative to the fixing plate 4. The waterproof cover 3 is embedded inside the front end cover 2. The waterproof cover 3 is sleeved outside the rotor 1 and a third gap 30 is formed between them. An air inlet hole 40 is opened on the fixing plate 4. A first air passage 21 is opened inside the front end cover 2. A second air passage 31 is opened inside the waterproof cover 3. The air inlet hole 40, the first air passage 21, the second air passage 31 and the third gap 30 are sequentially communicated to form an annular air seal between the rotor 1 and the waterproof cover 3;

[0023] A plurality of third air passages 50 are opened inside the tooth locking disc 5. A plurality of bosses 11 are formed on the front end face of the rotor 1. A plurality of fourth air passages 12 are opened inside the rotor 1. The fourth air passages 12 correspond to the bosses 11 one by one, and the front end openings of the fourth air passages 12 are located on the front end faces of the bosses 11. The third air passages 50 correspond to the fourth air passages 12 one by one and the two are communicated with each other. A tooth locking ring 25 is embedded on the rear end face of the front end cover 2. The tooth locking ring 25 is arranged opposite to the tooth locking disc 5. An annular air guiding groove 250 is formed on the rear end face of the tooth locking ring 25. A plurality of vertical air holes 251 are opened inside the tooth locking ring 25. A fifth air passage 41 that is sequentially communicated is opened inside the fixing plate 4 and the front end cover 2. The fifth air passage 41, the plurality of vertical air holes 251 and the annular air guiding groove 250 are sequentially communicated. The plurality of third air passages 50 are all communicated with the annular air guiding groove 250. The air flow injected into the fifth air passage 41 is discharged to the front ends of the bosses 11 through the plurality of vertical air holes 251, the annular air guiding groove 250, the third air passages 50 and the fourth air passages 12 in sequence.

[0024] In the above structure, air flow is introduced through the air inlet hole 40. This air flow is blown outwards successively through the first air duct 21, the second air duct 31, and the third gap 30, so as to form an annular air seal between the rotor 1 and the waterproof cover 3. By using this annular air seal, an immediate cleaning effect can be achieved at the front end of the main shaft, preventing dust, debris, water, etc. from entering the interior of the main shaft. When the main shaft performs a tool change operation, air flow is injected into the fifth air duct 41. This air flow is discharged towards the front end of the boss 11 successively through a plurality of third air ducts 50 and the fourth air duct 12, so as to blow out air flow towards the end face position between the rotor 1 and the tool holder. This air flow can blow out the dirt attached between the end face of the rotor 1 and the end face of the tool holder, thereby achieving effective cleaning during the tool change process. Compared with the prior art, the present invention can achieve an effective cleaning effect both during the operation of the main shaft and during the tool change process in the way of dual-channel air blowing, thereby improving the overall performance and service life of the equipment and better meeting the application requirements.

[0025] Actually, during the normal operation of the main shaft, the air flow injected into the fifth air duct 41 also has the function of preventing the reverse air flow from flowing back. Specifically, when the main shaft is operating normally, the toothed locking disc 5 and the front end cover 2 are in a relatively loose free state. Since there are clearance gaps between the rotor 1 and the front end cover 2 and between the toothed locking disc 5 and the front end cover 2, when air seal air flow is injected into the second air duct 31 and the third gap 30, there is a situation where the air seal air flow flows back into the above-mentioned clearance gaps. However, in this embodiment, the air flow injected into the fifth air duct 41 generates sufficient air pressure between the toothed locking disc 5 and the front end cover 2, thereby offsetting the air seal air pressure in the second air duct 31 and the third gap 30. Thus, the situation of the air seal air flow flowing back during the operation of the main shaft is avoided, that is, the air seal air flow carrying dust and debris into the interior of the main shaft is avoided. On this basis, the larger air flow in the fifth air duct 41 can also be blown towards the third gap 30 through the above-mentioned clearance gaps, so as to further enhance the air pressure of the annular air seal.

[0026] Similarly, when the main shaft performs the tool change operation again, the rotor 1 drives the toothed locking disc 5 and the front end cover 2 to abut and close against each other under the thrust action, and the air flow in the fifth air duct 41 is directly introduced into the third air duct 50 to achieve the front-end cleaning effect.

[0027] As a preferred method, an inner ring groove 32 is provided on the inner ring side of the waterproof cover 3, and the second air duct 31 communicates with the inner ring groove 32, and the air flow forms a first air bag in the inner ring groove 32.

[0028] Furthermore, an inner step opening 22 is provided on the inner ring side of the front end cover 2, and the air flow forms a second air bag in the inner step opening 22.

[0029] The functions of the first airbag and the second airbag are to ensure that the air pressure of the air flow blown out through the airbag is balanced and the flow rate is stable, thereby avoiding the occurrence of air flow interruption or even negative pressure generation.

[0030] As a preferred structural design, in this embodiment, the third air passage 50 is in an inverted "L" shape.

[0031] Furthermore, the fourth air passage 12 is in a "7" shape.

[0032] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, or improvements made within the technical scope of the present invention shall be included within the scope protected by the present invention.

Claims

1. A dual-channel air blowing mechanism at the front end of a spindle, characterized in that, It includes a rotor (1), a front end cover (2), a waterproof cover (3), a fixed disk (4) and a tooth locking disk (5). The tooth locking disk (5) is sleeved on the outside of the rotor (1) and the two are fixedly connected. The front end cover (2) is sleeved on the outside of the rotor (1) and there is a first gap (10) between them. The front end cover (2) is located on the front side of the tooth locking disk (5). The fixed disk (4) is fixedly connected to the front end cover (2). The fixed disk (4) is sleeved on the outside of the tooth locking disk (5), and the tooth locking disk (5) can rotate relative to the fixed disk (4). The waterproof cover (3) is embedded in the inner side of the front end cover (2). The waterproof cover (3) is sleeved on the outside of the rotor (1) and a third gap (30) is formed between them. An air inlet hole (40) is opened on the fixed disk (4). A first air passage (21) is opened in the front end cover (2). A second air passage (31) is opened in the waterproof cover (3). The air inlet hole (40), the first air passage (21), the second air passage (31) and the third gap (30) are sequentially communicated to form an annular air seal between the rotor (1) and the waterproof cover (3). A plurality of third air passages (50) are opened in the tooth locking disk (5). A plurality of convex platforms (11) are formed on the front end face of the rotor (1). A plurality of fourth air passages (12) are opened in the rotor (1). The fourth air passages (12) correspond to the convex platforms (11) one by one, and the front end openings of the fourth air passages (12) are located on the front end faces of the convex platforms (11). The third air passages (50) correspond to the fourth air passages (12) one by one and are communicated with each other. A tooth locking ring (25) is embedded in the rear end face of the front end cover (2). The tooth locking ring (25) is arranged opposite to the tooth locking disk (5). An annular air guiding groove (250) is formed on the rear end face of the tooth locking ring (25). A plurality of vertical air holes (251) are opened in the tooth locking ring (25). A fifth air passage (41) which is sequentially communicated is opened in the fixed disk (4) and the front end cover (2). The fifth air passage (41), a plurality of vertical air holes (251) and the annular air guiding groove (250) are sequentially communicated. A plurality of third air passages (50) are all communicated with the annular air guiding groove (250). The air flow injected into the fifth air passage (41) is discharged to the front end of the convex platform (11) sequentially through a plurality of vertical air holes (251), the annular air guiding groove (250), the third air passages (50) and the fourth air passages (12).

2. The dual-channel air blowing mechanism at the front end of a spindle according to claim 1, characterized in that, An inner ring groove (32) is opened on the inner ring side of the waterproof cover (3). The second air passage (31) is communicated with the inner ring groove (32). An air flow forms a first air bag in the inner ring groove (32).

3. The dual-channel air blowing mechanism at the front end of a spindle according to claim 1, characterized in that, An inner step opening (22) is opened on the inner ring side of the front end cover (2). An air flow forms a second air bag in the inner step opening (22).

4. The dual-channel air blowing mechanism at the front end of a spindle according to claim 1, characterized in that, The third air passage (50) is in an inverted "L" shape.

5. The dual-channel air blowing mechanism at the front end of a spindle according to claim 1, characterized in that, The fourth air passage (12) is in a "7" shape.

Images