High-speed turbine pneumatic spindle

Abstract

The utility model relates to the technical field of pneumatic main shafts, and discloses a high-speed turbine pneumatic main shaft which comprises an upper main shaft shell, an air inlet is formed in one side of the upper main shaft shell, a first vent groove is formed in the upper main shaft shell, and a lower main shaft shell is fixedly connected to the lower portion of the upper main shaft shell. A main shaft body is movably connected into the lower main shaft shell in a sleeved mode, a connecting pipe is fixedly connected to the upper portion of the main shaft body, and a plurality of first connecting holes are formed in the outer side of the connecting pipe at equal intervals. According to the high-speed turbine pneumatic main shaft, air can be blown outwards from the interior of the main shaft through the arranged connecting pipe, the equipment complexity is reduced, potential fault points are reduced, heat dissipation can be conducted on the interior of the main shaft, tools of different models can be fixed through the arranged fixing chuck, and use of the main shaft is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic spindle technical field especially relates to a high -speed turbine pneumatic spindle. BACKGROUND

[0002] High -speed turbine pneumatic spindle is a kind of device using gas dynamics principle, high-pressure gas drive turbine rotation to realize high-speed operation. This kind of spindle is widely used in precision machining, medical instruments (such as dental drill) and aerospace etc.

[0003] The existing high-speed turbine pneumatic spindle is commonly driven by the gas flow generated by the nozzle outside to rotate the turbine, and then the turbine drives the spindle to rotate to realize the function. The existing high-speed turbine spindle needs to be accurately designed and installed with external nozzle and pipeline, which increases the complexity and potential failure points of the system. The heat dissipation capacity of the external nozzle blowing structure is insufficient, and it is not convenient to prevent overheating under high load. Therefore, a high-speed turbine pneumatic spindle is proposed. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a high-speed turbine pneumatic spindle, which solves the problem that the existing high-speed turbine spindle needs to be accurately designed and installed with external nozzle and pipeline, which increases the complexity and potential failure points of the system. The heat dissipation capacity of the external nozzle blowing structure is insufficient, and it is not convenient to prevent overheating under high load.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A high-speed turbine pneumatic spindle, comprising a spindle upper shell, a gas inlet is formed on one side of the spindle upper shell, a first air passage is formed in the inside of the spindle upper shell, a spindle lower shell is fixedly connected below the spindle upper shell, a spindle body is movably sleeved in the inside of the spindle lower shell, a connecting pipe is fixedly connected above the spindle body, and a plurality of first connecting holes are equidistantly formed on the outside of the connecting pipe.

[0007] Further, an upper mounting plate is fixedly connected to the outside of the connecting pipe, a plurality of second connecting holes are equidistantly formed on the upper side of the upper mounting plate, a lower mounting plate is fixedly connected to the outside of the connecting pipe, and a transmission turbine is fixedly connected between the upper mounting plate and the lower mounting plate.

[0008] Further, four second air passages are equidistantly formed on the upper side of the spindle upper shell, a fixing rod is fixedly connected to the upper side of the spindle upper shell, sound-absorbing cotton is fixedly sleeved to the outside of the fixing rod, and the sound-absorbing cotton is in contact with the spindle upper shell below.

[0009] Further, the inside of the main shaft lower shell is fixedly sleeved with a first sealing ring, and the inside of the first sealing ring movably sleeves the main shaft body.

[0010] Further, the lower side of the main shaft lower shell is fixedly sleeved with a limiting sleeve, the upper side of the limiting sleeve abuts against a third sealing ring, the third sealing ring movably sleeves the outside of the main shaft body, the inside of the main shaft lower shell is fixedly sleeved with a second sealing ring, and the second sealing ring movably sleeves the outside of the main shaft body.

[0011] Further, the lower side of the main shaft body is provided with a mounting groove, the mounting groove is fixedly installed with a fixed chuck, and the lower end of the outside of the main shaft body is fixedly sleeved with a mounting sleeve.

[0012] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0013] 1、 the utility model discloses a connecting pipe can be blown from the inside of the main shaft, reduces the equipment complexity, reduces potential failure point, can heat dissipation to the inside of the main shaft, and the air current is injected through the air inlet, and the air current enters the connecting pipe through the first vent groove, and the air current enters the upper mounting plate and the lower mounting plate between and blows the transmission turbine, and the transmission turbine drives the connecting pipe to rotate in turn, and the connecting pipe drives the main shaft body to rotate, and the air current can take away the heat from the inside of the connecting pipe, and through such setting, can be blown from the inside of the main shaft, reduces the equipment complexity, reduces potential failure point, can heat dissipation to the inside of the main shaft.

[0014] 2、 the utility model discloses a fixed chuck can be fixed to different models of tools, and the use of the main shaft is facilitated, and one end of the tool is inserted into the inside of the mounting sleeve, and one end of the tool is inserted into the fixed chuck and is fixed, and the fixed chuck can adapt to multiple models of tools, and through such setting, different models of tools can be fixed, and the use of the main shaft is facilitated.

[0015] The parts not involved in the device are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the first angle overall structure schematic view of the utility model discloses a high -speed turbine pneumatic main shaft.

[0017] Figure 2 It is the second angle overall structure schematic view of the utility model discloses a high -speed turbine pneumatic main shaft.

[0018] Figure 3 It is the partial structure schematic view of the main shaft upper shell of the utility model discloses a high -speed turbine pneumatic main shaft.

[0019] Figure 4 This is a schematic diagram of the overall structure of a high-speed turbine aerodynamic spindle in the explosion state according to this utility model.

[0020] Figure 5 This is a partial structural diagram of the fixed chuck of a high-speed turbine pneumatic spindle according to the present invention.

[0021] In the diagram: 1. Upper housing of the spindle; 2. Air inlet; 3. First vent groove; 4. Connecting pipe; 5. First connecting hole; 6. Upper mounting plate; 7. Lower mounting plate; 8. Transmission turbine; 9. Second connecting hole; 10. First sealing ring; 11. Spindle body; 12. Limiting sleeve; 13. Second sealing ring; 14. Third sealing ring; 15. Fixing chuck; 16. Mounting sleeve; 17. Fixing rod; 18. Noise-absorbing cotton; 19. Second vent groove; 20. Lower housing of the spindle. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1-4 As shown, a high-speed turbine pneumatic spindle includes an upper spindle housing 1, an air inlet 2 on one side of the upper spindle housing 1, a first ventilation groove 3 inside the upper spindle housing 1, a lower spindle housing 20 fixedly connected to the lower part of the upper spindle housing 1, a spindle body 11 movably sleeved inside the lower spindle housing 20, a connecting pipe 4 fixedly connected to the upper part of the spindle body 11, and a plurality of first connecting holes 5 equidistantly opened on the outer side of the connecting pipe 4. By adopting the above technical solution, the upper part of the connecting pipe 4 abuts against the upper spindle housing 1, and a sealing strip is installed at the lower end of the lower spindle housing 20 to seal the contact position between the lower spindle housing 20 and the connecting pipe 4.

[0024] The air inlet 2 and the first ventilation slot 3 are spatially connected.

[0025] like Figures 1-4 As shown, an upper mounting plate 6 is fixedly connected to the outside of the connecting pipe 4. Several second connecting holes 9 are equally spaced above the upper mounting plate 6. A lower mounting plate 7 is fixedly connected to the outside of the connecting pipe 4. A transmission turbine 8 is fixedly connected between the upper mounting plate 6 and the lower mounting plate 7. By adopting the above technical solution, the airflow used to drive the transmission turbine 8 discharged from the first connecting hole 5 can be conveniently discharged from the second connecting hole 9, which facilitates gas flow.

[0026] like Figures 1-4As shown, the upper part of the upper spindle shell 1 is equidistantly provided with four second air vents 19, and the upper part of the upper spindle shell 1 is fixedly connected with a fixed rod 17, the outer side of the fixed rod 17 is fixedly sleeved with sound-absorbing cotton 18, and the lower part of the sound-absorbing cotton 18 abuts against the upper spindle shell 1. By adopting the above technical scheme, the sound-absorbing cotton 18 can absorb the noise generated by the airflow discharged from the second air vent 19, thereby improving the working environment.

[0027] As shown, Figures 1-4 The inside of the lower spindle shell 20 is fixedly sleeved with a first sealing ring 10, and the inner side of the first sealing ring 10 movably abuts against the spindle body 11. By such a design, the first sealing ring 10 can seal the contact position of the spindle body 11 and the lower spindle shell 20, thereby preventing gas leakage.

[0028] As shown, Figures 1-4 The lower part of the lower spindle shell 20 is fixedly sleeved with a limiting sleeve 12, the upper part of the limiting sleeve 12 abuts against a third sealing ring 14, and the third sealing ring 14 movably abuts against the outer side of the spindle body 11. The inner side of the lower spindle shell 20 is fixedly sleeved with a second sealing ring 13, and the second sealing ring 13 movably abuts against the outer side of the spindle body 11. By such a design, the third sealing ring 14 and the second sealing ring 13 can seal the gap between the spindle body 11 and the lower spindle shell 20, and at the same time, the fixing effect of the spindle body 11 is enhanced.

[0029] As shown, Figures 1-5 The lower part of the spindle body 11 is provided with a mounting groove, and a fixed chuck 15 is fixedly installed in the mounting groove. The lower end of the spindle body 11 is fixedly sleeved with a mounting sleeve 16. By such a design, the inside of the fixed chuck 15 has a certain range of movement, and can fix the tool end head of 1mm-8mm.

[0030] In use, the airflow is injected through the air inlet 2, the airflow enters the connecting pipe 4 through the first air vent 3, the airflow enters the space between the upper mounting plate 6 and the lower mounting plate 7 through the first connecting hole 5, and drives the transmission turbine 8. The transmission turbine 8 in turn drives the connecting pipe 4 to rotate, and the connecting pipe 4 drives the spindle body 11 to rotate. At the same time, the airflow can take away the heat from the inside of the connecting pipe 4. The airflow is discharged through the second connecting hole 9, and the airflow is discharged through the second air vent 19. The sound-absorbing cotton 18 can absorb the noise generated by the airflow discharged from the second air vent 19.

[0031] By inserting one end of the tool into the inside of the mounting sleeve 16, and inserting the one end of the tool into the fixed chuck 15 for fixation, the fixed chuck 15 can adapt to tools of multiple models.

[0032] The utility model provides a kind of high-speed turbine aerodynamic main shaft, solve the high-speed turbine main shaft of existing need accurate design and install external nozzle and pipeline, increase the complexity of system and potential failure point, the heat dissipation capacity of external nozzle blowing structure is insufficient to main shaft, it is inconvenient to prevent overheating at high load Problem, more practical.

[0033] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements. These changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-speed turbine pneumatic spindle, comprising an upper housing (1) of the spindle, characterized in that: An air inlet (2) is provided on one side of the upper housing (1) of the main spindle, and a first ventilation groove (3) is provided inside the upper housing (1) of the main spindle. A lower housing (20) of the main spindle is fixedly connected to the lower housing (1). A main spindle body (11) is movably sleeved inside the lower housing (20). A connecting pipe (4) is fixedly connected to the upper part of the main spindle body (11). Several first connecting holes (5) are provided at equal intervals on the outer side of the connecting pipe (4).

2. The high-speed turbine pneumatic spindle according to claim 1, characterized in that: An upper mounting plate (6) is fixedly connected to the outside of the connecting pipe (4). Several second connecting holes (9) are equally spaced above the upper mounting plate (6). A lower mounting plate (7) is fixedly connected to the outside of the connecting pipe (4). A transmission turbine (8) is fixedly connected between the upper mounting plate (6) and the lower mounting plate (7).

3. A high-speed turbine pneumatic spindle according to claim 2, characterized in that: Four second ventilation slots (19) are equally spaced on the upper part of the main shaft upper housing (1). A fixing rod (17) is fixedly connected to the upper part of the main shaft upper housing (1). A sound-absorbing cotton (18) is fixedly sleeved on the outside of the fixing rod (17), and the lower part of the sound-absorbing cotton (18) abuts against the upper housing (1) of the main shaft.

4. A high-speed turbine pneumatic spindle according to claim 3, characterized in that: The lower housing (20) of the main spindle is fixedly fitted with a first sealing ring (10), and the inner side of the first sealing ring (10) is movably fitted to the main spindle body (11).

5. A high-speed turbine pneumatic spindle according to claim 4, characterized in that: A limiting sleeve (12) is fixedly sleeved on the lower outer side of the spindle lower housing (20). A third sealing ring (14) abuts against the upper part of the limiting sleeve (12), and the third sealing ring (14) is movably sleeved on the outer side of the spindle body (11). A second sealing ring (13) is fixedly sleeved on the inner side of the spindle lower housing (20), and the second sealing ring (13) is movably sleeved on the outer side of the spindle body (11).

6. A high-speed turbine pneumatic spindle according to claim 5, characterized in that: A mounting groove is provided at the bottom of the spindle body (11), and a fixing chuck (15) is fixedly installed in the mounting groove. A mounting sleeve (16) is fixedly sleeved on the outer side of the lower end of the spindle body (11).

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