Mandrel air outlet structure

Abstract

The utility model provides a mandrel air outlet structure which comprises a body and a mandrel, the mandrel is inserted into the body and rotatably connected with the body, a mounting hole for mounting a tool holder is formed in the front end of the mandrel, a first air blowing channel and a second air blowing channel are formed in the body, and the first air blowing channel is communicated with the second air blowing channel. An air outlet of the first blowing channel is communicated with a gap in the peripheral side of the front end of the mandrel, the mandrel is further provided with a second air outlet channel communicated with the second blowing channel, and air is blown into a mounting hole in the front end of the mandrel and the front end face of the mandrel sequentially through the second blowing channel and the second air outlet channel. The air outlet structure is simple in structure, the air outlet structure is arranged on the mandrel, air can be effectively discharged in different working states, liquid can be prevented from entering the mandrel, the waterproof effect is good, multiple effects of cleaning a cutter and assisting in cutter replacement are achieved, the service life of the mandrel and the service life of the cutter are prolonged, and the machining precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool cutters, in particular to a spindle air outlet structure. Background Art

[0002] Machine tools are important equipment for machining parts. Machine tools mainly perform machining operations through cutters. When the cutter is machining, cutting fluid is generally required to cool the cutter. At the same time, a large amount of waste chips are generated during machining. Therefore, a mixture of waste chips and cutting fluid is generated during machining. This mixture is likely to remain on the shank of the cutter. If not removed, it will affect the machining of the cutter. In addition, during machining, the mixture of waste chips and cutting fluid will also enter the spindle along the gap, causing spindle contamination and rust, and the waste chips will wear the spindle, affecting the service life of the spindle and even the machining accuracy.

[0003] At present, the existing cutter cleaning devices generally set air blowing pipes near the cutter, which can only clean the outer surface of the cutter at a certain distance, cannot prevent the cutting fluid from entering the spindle, and are not suitable for cleaning the cutter during machining. Summary of the Utility Model

[0004] The utility model aims to provide a spindle air outlet structure to overcome the deficiencies existing in the prior art.

[0005] To solve the above technical problems, the technical solution of the utility model is: a spindle air outlet structure, including a body and a spindle. The spindle is inserted into the body and rotatably connected to the body. An installation hole for installing the shank of the cutter is provided at the front end of the spindle. The body is provided with a first air blowing channel and a second air blowing channel. The air outlet of the first air blowing channel is communicated with the peripheral side gap at the front end of the spindle. The spindle is further provided with a second air outlet channel communicated with the second air blowing channel. The gas is blown into the installation hole at the front end of the spindle and the front end face of the spindle through the second air blowing channel and the second air outlet channel in sequence.

[0006] Further, in the above spindle air outlet structure, an air inlet one and an air inlet two are provided on the outer side of the body. Connectors for connecting with an external air source are provided on the air inlet one and the air inlet two. The air inlet one is connected with the first air blowing channel, and the air inlet two is connected with the second air blowing channel.

[0007] Further, in the above spindle air outlet structure, it further includes a spindle front cover and an air ring. The spindle front cover is fixed at the front end of the spindle. An air ring sleeved on the front end of the spindle is provided inside the spindle front cover. The spindle front cover is provided with a first air outlet channel communicated with the first air blowing channel. An air outlet one is provided on the outer peripheral side of the air ring. The gas is blown to the peripheral side gap at the front end of the spindle through the first air blowing channel, the first air outlet channel and the air outlet one in sequence.

[0008] Further, in the above spindle air outlet structure, a plurality of air outlets one are provided, and they are evenly arranged along the outer peripheral side of the air ring.

[0009] Further, in the above-mentioned mandrel air outlet structure, a first communication cavity located between the air ring and the front mandrel cover is provided inside the front mandrel cover. The first communication cavity is an annular groove communicating with the first air outlet channel, and a plurality of first air outlets are all communicated with the first communication cavity.

[0010] Further, in the above-mentioned mandrel air outlet structure, the second air outlet channel is communicated with the second blowing channel through a third air outlet channel provided inside the front mandrel cover. The second air outlet channel is composed of a plurality of vertically intersecting channels, and an end thereof is provided with a second air outlet and a third air outlet. The second air outlet is provided on the inner side wall of the mounting hole and blows air between the tool handle and the mounting hole, and the third air outlet is provided on the front end face of the mandrel and blows air towards the tool handle.

[0011] Further, in the above-mentioned mandrel air outlet structure, a plurality of the second air outlet channels are provided and are uniformly arranged along the circumferential side of the mounting hole.

[0012] Further, in the above-mentioned mandrel air outlet structure, a second communication cavity communicated with the second blowing channel is further provided on the outer side of the front end of the mandrel. The second communication cavity is an annular groove, and the air inlets of a plurality of the second air outlet channels are all communicated with the second communication cavity.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The structure of the present utility model is simple. The air outlet structure is arranged on the mandrel, and effective air outlet can be achieved in different working states. It can prevent liquid from entering the mandrel, has good waterproof effect, and has multiple effects of cleaning the tool and assisting in tool change, improves the service life of the mandrel and the tool, and ensures the machining accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of the mandrel air outlet structure of the present utility model;

[0016] Figure 2 It is a partial schematic diagram of the mandrel air outlet structure of the present utility model;

[0017] In the figure: 1. Body; 11. First blowing channel; 12. Second blowing channel; 13. First air inlet; 14. Second air inlet;

[0018] 2. Mandrel; 21. Mounting hole; 22. Second air outlet channel; 23. Second air outlet; 24. Third air outlet; 25. Second communication cavity;

[0019] 3. Tool handle

[0020] 4. Front cover of mandrel; 41. First air outlet passage; 42. First communication cavity; 43. Third air outlet passage

[0021] 5. Piston ring; 51. First air outlet Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] Embodiment 1

[0024] As shown in Figure 1 , 2 , a mandrel air outlet structure includes a body 1 and a mandrel 2. The mandrel 2 is inserted into the body 1 and rotatably connected to the body 1. An installation hole 21 for installing the tool handle 3 is provided at the front end of the mandrel 2. A first air blowing passage 11 and a second air blowing passage 12 are provided on the body 1. The air outlet of the first air blowing passage 11 is communicated with the peripheral side gap at the front end of the mandrel 2. An air outlet passage 22 communicated with the second air blowing passage 12 is further provided on the mandrel 2. Gas is blown into the installation hole 21 at the front end of the mandrel 2 and the front end face of the mandrel 2 in sequence through the second air blowing passage 12 and the air outlet passage 22. When the first air blowing passage 11 and the second air blowing passage 12 are ventilated, air can be blown to the peripheral side gap at the front end of the mandrel 2, the mandrel installation hole 21 and the front end face of the mandrel 2. By providing a plurality of air blowing ports, liquid can be prevented from entering the mandrel through the gap, and the tool can be cleaned closely during tool processing to ensure the cleanliness of the tool.

[0025] As shown in Figure 1 , 2 , an air inlet 13 and an air inlet 14 are provided on the outer side of the body 1. Connectors (not shown in the figure) connected to an external air source are provided on the air inlet 13 and the air inlet 14, and the air inlet 13 is connected to the first air blowing passage 11, and the air inlet 14 is connected to the second air blowing passage 12.

[0026] As shown in Figure 1 , 2As shown in the figure, the above-mentioned mandrel air outlet structure further includes a mandrel front cover 4 and an air ring 5. The mandrel front cover 4 is fixed to the front end of the mandrel 2. An air ring 5 sleeved on the front end of the mandrel 2 is arranged inside the mandrel front cover 4. An air outlet channel 41 communicating with the first blowing channel 11 is arranged on the mandrel front cover 4. An air outlet 51 is arranged on the outer peripheral side of the air ring 5. Gas is blown to the outer peripheral side gap at the front end of the mandrel 2 in sequence through the first blowing channel 11, the first air outlet channel 41, and the first air outlet 51, preventing the mixture of liquid and waste chips from entering the mandrel through the gap, avoiding mandrel pollution and rust, and improving the service life of the mandrel.

[0027] As Figure 2 shown in the figure, a plurality of the first air outlets 51 are provided and are evenly arranged along the outer peripheral side of the air ring 5. The number of the first air outlets 51 is set according to the outer diameter of the mandrel to ensure that there is air outlet at the outer side gap of the mandrel. A first communication cavity 42 located between the air ring 5 and the mandrel front cover 4 is arranged inside the mandrel front cover 4. The first communication cavity 42 is an annular groove communicating with the first air outlet channel 41. A plurality of the first air outlets 51 are all communicated with the first communication cavity 42. Through the setting of the first communication cavity 42, the air intake of the plurality of the first air outlets 51 is ensured to be uniform. The plurality of the first air outlets 51 are evenly arranged with respect to the outer peripheral side gap of the mandrel 2, so that there is air outlet at the entire gap, thereby completely ensuring that the mixture will not enter the mandrel 2 through the gap.

[0028] As Figure 1 、 2 shown in the figure, the second air outlet channel 22 is communicated with the second blowing channel 12 through a third air outlet channel 43 arranged inside the mandrel front cover 4. The second air outlet channel 22 is composed of a plurality of vertically intersecting channels, and an air outlet 23 and an air outlet 24 are arranged at its end. The air outlet 23 is arranged on the inner side wall of the mounting hole 21 and blows air towards the space between the tool handle 3 and the mounting hole 21. The air outlet 24 is arranged on the front end face of the mandrel 2 and blows air towards the tool handle 3.

[0029] Among them, a plurality of the second air outlet channels 22 are provided and are evenly arranged along the circumferential side of the mounting hole 21. The number of the second air outlet channels 22 is set according to the tool cleaning effect. A second communication cavity 25 communicating with the second blowing channel 12 is further arranged on the outer side of the front end of the mandrel 2. The second communication cavity 25 is an annular groove. The air inlets of the plurality of the second air outlet channels 22 are all communicated with the second communication cavity 25. Through the setting of the second communication cavity 25, the air intake of the plurality of the second air outlet channels 22 is ensured to be uniform. The setting of the plurality of the second air outlet channels 22 can ensure the cleaning effect on the tool.

[0030] Working principle of the utility model: The front cover 4 of the mandrel is connected to the body 1. An air outlet passage 1 and an air outlet passage 3 are provided in the front cover 4 of the mandrel to connect the air rings 5 and the air holes on the mandrel 2. When the tool is working, the mandrel 2 rotates, and the air inlet 13 and the air inlet 2 on the body 1 are in long-term ventilation. The gas enters the air outlet 1, the air outlet 23, and the air outlet 24, which can prevent the mixture from entering the mandrel 2. At the same time, whether the tool is working or in a stopped state, the tool handle 3 can be cleaned to avoid the mixture remaining on the tool. And when the tool needs to be replaced, the air blown out from the air outlet 23 and the air outlet 24 can assist in tool replacement, preventing the tool from being adsorbed in the installation hole due to negative pressure, making the tool replacement smoother and improving the tool replacement efficiency. The structure of the utility model is simple. The air outlet structure is arranged on the mandrel. In different working states, effective air outlet can be achieved to prevent liquid from entering, and the waterproof effect is good. It also has multiple effects of cleaning the tool and assisting in tool replacement, improving the service life of the mandrel and the tool, and ensuring the machining accuracy.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0032] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mandrel air outlet structure, characterized in that: It includes a body and a mandrel. The mandrel is inserted inside the body and rotatably connected to the body. An installation hole for installing the tool handle is provided at the front end of the mandrel. The body is provided with a first air blowing channel and a second air blowing channel. The air outlet of the first air blowing channel is communicated with the peripheral side gap at the front end of the mandrel. An air outlet channel two communicated with the second air blowing channel is also provided on the mandrel. The gas is blown into the installation hole at the front end of the mandrel and the front end face of the mandrel in sequence through the second air blowing channel and the air outlet channel two.

2. The mandrel air outlet structure according to claim 1, characterized in that: An air inlet one and an air inlet two are provided on the outer side of the body. Connectors connected to an external air source are provided on the air inlet one and the air inlet two. The air inlet one is connected to the first air blowing channel, and the air inlet two is connected to the second air blowing channel.

3. The mandrel air outlet structure according to claim 1, characterized in that: It further includes a mandrel front cover and an air ring. The mandrel front cover is fixed at the front end of the mandrel. An air ring sleeved on the front end of the mandrel is provided inside the mandrel front cover. An air outlet channel one communicated with the first air blowing channel is provided on the mandrel front cover. An air outlet one is provided on the outer peripheral side of the air ring. The gas is blown to the peripheral side gap at the front end of the mandrel in sequence through the first air blowing channel, the air outlet channel one, and the air outlet one.

4. The mandrel air outlet structure according to claim 3, wherein: There are multiple air outlet ones, which are evenly arranged along the outer peripheral side of the air ring.

5. The mandrel air outlet structure according to claim 4, wherein: A first communication cavity located between the air ring and the mandrel front cover is provided inside the mandrel front cover. The first communication cavity is an annular groove communicated with the air outlet channel one. Multiple air outlet ones are all communicated with the first communication cavity.

6. The mandrel air outlet structure according to any one of claims 1-5, characterized in that: The air outlet channel two is communicated with the second air blowing channel through an air outlet channel three provided inside the mandrel front cover. The air outlet channel two is composed of multiple vertically intersecting channels. An air outlet two and an air outlet three are provided at its end. The air outlet two is provided on the inner side wall of the installation hole and blows air between the tool handle and the installation hole. The air outlet three is provided on the front end face of the mandrel and blows air towards the tool handle.

7. The mandrel air outlet structure according to claim 6, characterized in that: There are multiple air outlet channels two, which are evenly arranged along the circumference of the installation hole.

8. The mandrel air outlet structure according to claim 7, characterized in that: A second communication cavity communicated with the second air blowing channel is further provided on the outer side of the front end of the mandrel. The second communication cavity is an annular groove. The air inlets of multiple air outlet channels two are all communicated with the second communication cavity.

Images