CN116604048A - Main shaft handle taper hole air cleaning structure and electric main shaft - Google Patents

Abstract

The application provides a spindle knife handle taper hole air cleaning structure and an electric spindle. This main shaft handle of a knife taper hole gas cleaning structure includes cylinder body, piston, axle core, handle of a knife, pull rod and pull claw subassembly, the pull rod activity sets up in the axle core, the handle of a knife sets up the tip at the axle core, pull claw subassembly is installed on the pull rod, and be located the hole of handle of a knife and axle core, the one end and the piston connection of pull claw subassembly are kept away from to the pull rod, and can realize the regulation to the pine sword position and the cutting position of pull claw subassembly under the effect of piston, be provided with the installation taper hole of installation handle of a knife on the axle core, still be provided with gas passage on the axle core, gas passage communicates to the installation taper hole, be provided with seal structure on the pull rod, seal structure opens gas passage when pull claw subassembly is in pine sword position, seal structure seals gas passage when pull claw subassembly is in cutting position. According to the spindle shank taper hole air cleaning structure, the air cleaning function only acts in the cutter loosening stage, and the working state of the cutter in the tensioning process is not affected.

Description

Main shaft handle taper hole air cleaning structure and electric main shaft

Technical Field

The application relates to the technical field of high-speed and high-precision machining, in particular to a spindle knife handle taper hole air cleaning structure and an electric spindle.

Background

In the field of high-speed high-precision die processing, the die processing environment of some special materials is very bad, for example, when a graphite machine main shaft performs high-gloss processing on a graphite die, a large amount of dust can be generated, and the dust is very easy to enter the main shaft when the air pressure changes and is adhered to the taper hole surface of the cutter handle, and when the main shaft changes the cutter, the cutter handle junction surface is very easy to be influenced, so that the air cleaning of the taper hole surface of the cutter handle is very necessary in time.

In the related art, when the taper hole surface of the cutter handle is cleaned by air, the taper hole surface of the cutter handle is cleaned through the cleaning channel, and the cleaning structure continuously ventilates the taper hole surface of the cutter handle in both the cutting stage and the cutter loosening stage, so that the working state of the cutter in the tensioning process of the cutter can be influenced.

Disclosure of Invention

The application mainly aims to provide a main shaft knife handle taper hole air cleaning structure and an electric main shaft, wherein the air cleaning function only acts in a knife loosening stage, and the working state of a knife in the tensioning process of the cutting process is not influenced.

In order to achieve the above object, according to an aspect of the present application, there is provided a taper hole air cleaning structure for a spindle tool shank, including a cylinder, a piston, a shaft core, a tool shank, a pull rod and a pull claw assembly, wherein the piston is slidably disposed in the cylinder, the shaft core is axially fixed with respect to the cylinder, the pull rod is movably disposed in the shaft core, the tool shank is disposed at an end of the shaft core away from the piston, the pull claw assembly is mounted on the pull rod and is disposed in an inner hole of the tool shank and the shaft core, one end of the pull rod away from the pull claw assembly is connected with the piston, and can adjust a tool loosening position and a cutting position of the pull claw assembly under the action of the piston, a mounting taper hole for mounting the tool shank is disposed on the shaft core, an air passage is further disposed on the shaft core, the air passage is communicated to the mounting taper hole, and a sealing structure is disposed on the pull rod, the sealing structure opens the air passage when the pull claw assembly is in the tool loosening position, and the sealing structure seals the air passage when the pull claw assembly is in the cutting position.

Further, the gas channel comprises a radial extension section and an axial extension section which are positioned at one end of the shaft core close to the tool handle, the radial extension section extends outwards from the inner hole of the shaft core in a radial direction, the axial extension section is communicated to the mounting taper hole through a laterally extending blowhole, and the sealing structure comprises a sealing ring arranged at the periphery of the pull rod;

when the pull claw assembly is positioned at the cutter loosening position, the sealing ring is positioned at one side of the radial extension section far away from the piston and is in sealing fit with the inner hole of the shaft core, and a communicated gas channel is formed between one side of the radial extension section close to the piston and the pull rod;

when the pull claw assembly is positioned at the cutting position, the sealing ring is positioned on one side of the radial extension section, which is close to the piston, and is in sealing fit with the inner hole of the shaft core so as to cut off the gas channel.

Further, the shaft core is provided with an annular air dividing groove at a position corresponding to the radial extension section, the pull rod is provided with an annular groove at one side of the sealing ring, which is close to the piston, and when the pull claw assembly is positioned at the cutter loosening position, the annular air dividing groove is matched with the annular groove to form an air channel.

Further, the shaft core is provided with an installation cavity, the pull rod is arranged in the installation cavity in a penetrating mode, an elastic element is arranged between the pull rod and the inner wall of the installation cavity, the elastic element provides elastic restoring force for the pull rod, and a gas channel is formed between the pull rod and the inner wall of the installation cavity.

Further, one end of the pull rod, which is close to the piston, is provided with an annular bulge, one end of the pull rod, which is close to the piston, is provided with a stop shoulder, one end of the elastic element is abutted on the annular bulge, and the annular bulge is axially limited by the stop shoulder.

Further, one end of the pull rod, which is close to the piston, is provided with a first axial flow channel, one end of the first axial flow channel is communicated with the air source, and the other end of the first axial flow channel is communicated with the mounting cavity through a first radial flow channel.

Further, be provided with the air inlet channel and with the first slope runner of air inlet channel intercommunication on the cylinder body, first slope runner extends to the inner wall of cylinder body, and the inner wall of cylinder body corresponds first slope runner and is provided with annular first air storage groove, is provided with the bleed air passageway on the piston, the terminal and the first axial runner intercommunication of bleed air passageway.

Further, an induction disc is arranged at the end part of the pull rod, which is close to the piston, an annular second air storage groove is arranged at the tail end of the air entraining channel, a second inclined flow channel is arranged on the induction disc, an annular third air storage groove is arranged at the periphery of the pull rod and communicated with the first axial flow channel, one end of the second inclined flow channel is communicated with the second air storage groove, and the other end of the second inclined flow channel is communicated with the third air storage groove.

Further, the one end that the installation cavity was kept away from the piston is provided with the pneumatic valve, and the one end elastic component was kept away from the piston compresses tightly on the pneumatic valve elasticity, and the pneumatic valve includes setting up the second radial runner on the terminal surface towards elastic component one end and setting up the second axial runner on the internal wall, and second radial runner and second axial runner intercommunication, second axial runner intercommunication installation cavity and radial extension.

According to another aspect of the application, an electric spindle is provided, which comprises a spindle handle taper hole air cleaning structure, wherein the spindle handle taper hole air cleaning structure is the spindle handle taper hole air cleaning structure.

By applying the technical scheme, the spindle knife handle taper hole air cleaning structure comprises a cylinder body, a piston, a shaft core, a knife handle, a pull rod and a pull claw assembly, wherein the piston is arranged in the cylinder body in a sliding mode, the shaft core is fixedly arranged relative to the cylinder body, the pull rod is movably arranged in the shaft core, the knife handle is arranged at the end portion, far away from the piston, of the shaft core, the pull claw assembly is arranged on the pull rod and is positioned in an inner hole of the knife handle and the shaft core, one end, far away from the pull claw assembly, of the pull rod is connected with the piston, the adjustment of the loose knife position and the cutting position of the pull claw assembly can be realized under the action of the piston, the shaft core is provided with a mounting taper hole for mounting the knife handle, the shaft core is also provided with an air channel, the air channel is communicated to the mounting taper hole, the pull rod is provided with a sealing structure, and when the pull claw assembly is positioned at the loose knife position, the sealing structure opens the air channel, and when the pull claw assembly is positioned at the cutting position, the sealing structure seals the air channel. This main shaft handle of a knife taper hole gas cleaning structure sets up seal structure in the cooperation position of axle core and pull rod, utilizes the pull rod to be in different axial position's characteristics when drawing the claw subassembly and being in loose sword position and cutting position, adjusts seal structure's seal position for seal structure can open gas passage when drawing the claw subassembly and be in loose sword position, realizes carrying out gas cleaning to handle of a knife taper hole when main shaft handle of a knife taper hole gas cleaning structure is in loose sword state, closes gas passage when main shaft handle of a knife taper hole gas cleaning structure is in cutting state, does not influence the operating condition when cutting process cutter is taut.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 shows a schematic cross-sectional view of a spindle shank taper air cleaning structure in a loose blade mode according to an embodiment of the present application;

FIG. 2 shows an enlarged schematic view of the structure at L of FIG. 1;

FIG. 3 shows a schematic cross-sectional view of a spindle shank taper air cleaning structure in a cutting mode according to an embodiment of the present application;

FIG. 4 shows a schematic perspective view of a pull rod of a spindle shank taper hole air cleaning structure according to an embodiment of the present application;

FIG. 5 shows a schematic perspective view of a cylinder body of a spindle shank taper hole air cleaning structure according to an embodiment of the present application;

FIG. 6 shows a schematic perspective view of a piston of a spindle shank taper hole air cleaning structure according to an embodiment of the present application;

FIG. 7 is a schematic perspective view of an induction disk of a spindle shank taper hole air cleaning structure according to an embodiment of the present application; and

fig. 8 shows a schematic perspective view of an air valve of a spindle shank taper hole air cleaning structure according to an embodiment of the present application.

Wherein the above figures include the following reference numerals:

1. a cylinder; 2. a piston; 3. a shaft core; 4. a knife handle; 5. a pull rod; 6. a pull claw assembly; 7. installing a taper hole; 8. a gas channel; 9. a radially extending section; 10. an axially extending section; 11. a blow hole; 12. a seal ring; 13. an annular gas dividing groove; 14. an annular groove; 15. a mounting cavity; 16. an elastic element; 17. an annular protrusion; 18. a shoulder; 19. a first axial flow passage; 20. a first radial flow passage; 21. an air intake passage; 22. a first inclined flow passage; 23. a bleed air passage; 24. a first gas storage tank; 25. an induction plate; 26. a second gas storage tank; 27. a second inclined flow passage; 28. a third gas storage tank; 29. an air valve; 30. a second radial flow passage; 31. a second axial flow path; 32. and a cover body.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 to 8, according to an embodiment of the present application, the taper hole air cleaning structure for a spindle tool shank includes a cylinder 1, a piston 2, a shaft core 3, a tool shank 4, a pull rod 5 and a pull claw assembly 6, the piston 2 is slidably disposed in the cylinder 1, the shaft core 3 is axially fixed relative to the cylinder 1, the pull rod 5 is movably disposed in the shaft core 3, the tool shank 4 is disposed at an end of the shaft core 3 far away from the piston 2, the pull claw assembly 6 is mounted on the pull rod 5 and is disposed in inner holes of the tool shank 4 and the shaft core 3, one end of the pull rod 5 far away from the pull claw assembly 6 is connected with the piston 2, and can realize adjustment of a loose tool position and a cutting position of the pull claw assembly 6 under the action of the piston 2, a mounting taper hole 7 for mounting the tool shank 4 is disposed on the shaft core 3, an air passage 8 is further disposed on the shaft core 3, the air passage 8 is communicated to the mounting taper hole 7, a sealing structure is disposed on the pull rod 5, when the pull claw assembly 6 is in the loose tool position, the sealing structure opens the air passage 8, and when the pull claw assembly 6 is in the cutting position, the sealing structure seals the air passage 8.

This main shaft handle of a knife taper hole gas cleaning structure sets up seal structure in the cooperation position of axle core 3 and pull rod 5, utilizes pull rod 5 to be in different axial position's characteristics when pulling claw subassembly 6 is in loose sword position and cutting position, adjusts seal structure's seal position for seal structure can open gas passage 8 when pulling claw subassembly 6 is in loose sword position, realizes carrying out gas cleaning to handle of a knife taper hole when main shaft handle of a knife taper hole gas cleaning structure is in loose sword state, closes gas passage 8 when main shaft handle of a knife taper hole gas cleaning structure is in cutting state, does not influence the operating condition when the cutting process cutter is taut.

In this embodiment, since the pull rod 5 is at different axial positions when the pull claw assembly 6 is at the loose knife position and the cutting position, the sealing structure can be arranged on the pull rod 5 by combining the characteristics of the pull rod 5, so that the gas channel 8 is conducted and closed by utilizing the difference of the positions of the sealing structure and the shaft core 3 in a sealing fit relationship, the conducting and closing structure of the gas channel 8 can be realized by utilizing the original structure of the pull rod 5 and the shaft core 3, only the tiny structural adjustment is needed on the pull rod 5, and the improvement of the sealing structure can be realized, the modification cost is low, the structure is simple, the implementation is easy, and the cleaning effect on the mounting taper hole 7 is good.

In one embodiment, the gas channel 8 comprises a radial extension 9 and an axial extension 10 at one end of the shaft core 3 near the tool shank 4, the radial extension 9 extends radially outwards from the inner hole of the shaft core 3, the axial extension 10 is communicated to the mounting taper hole 7 through a laterally extending blowhole 11, and the sealing structure comprises a sealing ring 12 arranged at the periphery of the pull rod 5; when the pull claw assembly 6 is in the cutter loosening position, the sealing ring 12 is positioned on one side of the radial extension section 9 away from the piston 2 and is in sealing fit with the inner hole of the shaft core 3, and a communicated gas channel 8 is formed between one side of the radial extension section 9, which is close to the piston 2, and the pull rod 5; when the pull jaw assembly 6 is in the cutting position, the sealing ring 12 is positioned on one side of the radial extension 9 close to the piston 2 and is in sealing fit with the inner hole of the shaft core 3 so as to cut off the gas channel 8.

In this embodiment, the sealing structure adopts the sealing ring 12, so only the installation groove of the sealing ring 12 is required to be formed in the periphery of the pull rod 5, the structure is simple, the processing is convenient, in addition, no change is required to be made to the structure of the pull rod 5, and the on-off adjustment of the gas channel 8 can be realized only by adjusting the matching position of the sealing ring 12 and the inner hole of the shaft core 3, so that the realization cost is lower.

In addition, set up the gas channel 8 to including radial extension section 9 and axial extension section 10 at the one end of axle core 3 installation handle of a knife 4, can enough utilize radial extension section 9 to occupy the less characteristics of size in axial direction, conveniently realize the regulation of sealing washer 12 in radial extension section 9 both sides, can make gas channel 8 extend towards the radial outside of axle core 3 again for the axial extension section that communicates with radial extension section 9 can be located the periphery side of installation taper hole 7, conveniently lets in the installation taper hole 7 department with clean gas, cleans installation taper hole 7.

When the pull claw assembly 6 is at the cutter loosening position, the sealing ring 12 is sealed between the shaft core 3 and the pull rod 5 on the side, close to the pull claw assembly 6, of the radial extension section 9, so that when the cleaning gas reaches the radial extension section 9, the cleaning gas cannot enter the installation position of the pull claw assembly 6, can only flow to the axial extension section 10 along the radial extension section 9, and further enters the installation taper hole 7 from the air blowing hole 11 through the axial extension section 10, and the installation taper hole 7 is cleaned.

In one embodiment, the axially extending section 10 extends to a position where the spindle 3 engages the shank 4, where the cleaning gas reaches along the axially extending section 10 between the end face of the spindle 3 and the end face of the shank 4 when the spindle is in the tool-releasing state, where the gas cleaning takes place.

In one embodiment, the shaft core 3 is provided with an annular air dividing groove 13 at a position corresponding to the radial extension section 9, the pull rod 5 is provided with an annular groove 14 at one side of the sealing ring 12 close to the piston 2, and the annular air dividing groove 13 is matched with the annular groove 14 to form the air channel 8 when the pull claw assembly 6 is in the cutter loosening position.

In the present embodiment, by providing the annular gas distribution groove 13 at the shaft core 3 and making the plurality of radially extending sections 9 and axially extending sections 10 all disposed at uniform intervals in the circumferential direction, the cleaning gas delivered from the gas passage 8 between the shaft core 3 and the tie rod 5 can be distributed by the annular gas distribution groove 13 so that the cleaning gas is uniformly distributed into each radially extending section 9, and then the cleaning gas is blown out from the plurality of circumferential positions of the installation cone 7 by the axially extending sections 10 and the blowholes 11 communicating with the axially extending sections 10, cleaning the installation cone 7, and cleaning effect and cleaning efficiency are improved.

The annular groove 14 is formed in one side, close to the piston 2, of the sealing ring 12 of the pull rod 5, so that the gas flow area can be increased, the gas flow is increased, and the continuity of the gas channel 8 is better ensured.

In one embodiment, the shaft core 3 is provided with a mounting cavity 15, the pull rod 5 is arranged in the mounting cavity 15 in a penetrating way, an elastic element 16 is arranged between the pull rod 5 and the inner wall of the mounting cavity 15, the elastic element 16 provides elastic restoring force for the pull rod 5, and a gas channel 8 is formed by a channel between the pull rod 5 and the inner wall of the mounting cavity 15.

In this embodiment, by arranging the elastic element 16 in the mounting cavity 15, an elastic restoring force for restoring the cutting position can be provided for the pull rod 5 by using the elastic element 16, when the pull rod 6 needs to be in the loose knife position, the pull rod 5 can be pushed by the piston 2 to move, so that the pull rod 6 extends forwards to reach the loose knife position, after the loose knife action is completed and the cleaning work is completed, the power of the piston 2 can be relieved, and at this time, under the elastic action of the elastic element 16, the pull rod 5 can be pushed to pull the pull rod 6 back, so that the pull rod 6 returns to the cutting position.

In addition, the channel formed between the elastic element 16 and the inner wall of the mounting cavity 15 is used as the gas channel 8 in the embodiment, and the gas channel is not required to be additionally arranged on the shaft core 3, so that the structure is simpler.

In one embodiment, the end of the pull rod 5 close to the piston 2 is provided with an annular protrusion 17, the end of the pull rod 5 close to the piston 2 is provided with a stop shoulder 18, one end of the elastic element 16 abuts against the annular protrusion 17, and the annular protrusion 17 is axially limited by the stop shoulder 18.

In this embodiment, by providing the annular protrusion 17 on the pull rod 5, the installation and positioning of the elastic element 16 can be facilitated, and in addition, the annular protrusion 17 can be utilized to form a sliding guide fit with the inner wall of the installation cavity of the shaft core 3, so as to form an effective guide for the axial movement of the pull rod 5. In addition, the annular bulge 17 can also conveniently realize axial limit fit with the stop shoulder 18, and effectively limit the axial movement of the pull rod 5.

In this embodiment, the shoulder 18 is disposed at a position of an installation opening of the shaft core 3, the installation opening is used for installing the pull rod 5 in the shaft core 3, and after the pull rod 5 is installed in the shaft core 3 from the installation opening, the pull rod 5 can be fixed at the installation opening by using the shoulder 18, so as to complete the installation of the pull rod 5. The shoulder 18 can be detachably mounted at the mounting opening, and a specific connection mode can be screw connection or clamping connection.

In one embodiment, the pull rod 5 is provided with a first axial flow passage 19 near one end of the piston 2, one end of the first axial flow passage 19 being configured to communicate with a gas source, the other end of the first axial flow passage 19 being in communication with the mounting cavity 15 via a first radial flow passage 20.

In this embodiment, the first axial flow channel 19 can conveniently realize the communication between the air source and the air channel 8 formed by the installation cavity, and has a simple structure and convenient implementation. The first axial flow passage 19 may be connected to the gas source by means of a gas pipe connection or the like, and in some embodiments may be formed directly in the tie rod 5 in a radial direction and connected to the gas source from there.

In one embodiment, the cylinder 1 is provided with an air inlet channel 21 and a first inclined flow channel 22 communicated with the air inlet channel 21, the first inclined flow channel 22 extends to the inner wall of the cylinder 1, the inner wall of the cylinder 1 is provided with an annular first air storage groove 24 corresponding to the first inclined flow channel 22, the piston 2 is provided with a bleed air channel 23, the tail end of the bleed air channel 23 is communicated with the first axial flow channel 19, and the air inlet end of the bleed air channel 23 is communicated with the first air storage groove 24 when the pull claw assembly 6 is in the loose cutter position.

In the present embodiment, by providing the intake passage 21 and the first inclined flow passage 22 on the cylinder 1, in which the intake passage 21 extends in the axial direction, since the intake passage 21 is provided on the cylinder 1 and the cylinder 1 is fixedly provided, after being connected to the air source through the intake passage 21, the cleaning gas can be stably inputted to the intake passage 21 through the air source, and the first inclined flow passage 22 is advantageous for guiding the cleaning gas inward to the piston 2. The first air storage groove 24 on the inner wall of the cylinder body 1 is annular, the cleaning gas in the first inclined flow passage 22 is distributed to the whole first air storage groove 24 after entering the first air storage groove 24, and then the cleaning gas can be guided to the end part of the piston 2 by utilizing the first air storage groove 24 to a plurality of circumferentially distributed air entraining channels 23, and then the cleaning gas is conveyed into the first axial flow passage 19 through the piston 2.

The air inlet end of the bleed air channel 23 communicates with the first air reservoir 24 when the pull claw assembly 6 is in the knife loosening position, and since the first air reservoir 24 on the inner wall of the cylinder 1 is annular, the continuity of the flow of cleaning gas in the gas channel 8 is not affected even if the piston 2 rotates about its axis.

In one embodiment, the end of the pull rod 5 near the piston 2 is provided with an induction disc 25, the end of the bleed air channel 23 is provided with an annular second air reservoir 26, the induction disc 25 is provided with a second inclined flow channel 27, the periphery of the pull rod 5 is provided with an annular third air reservoir 28, the third air reservoir 28 is communicated with the first axial flow channel 19, one end of the second inclined flow channel 27 is communicated with the second air reservoir 26, and the other end of the second inclined flow channel 27 is communicated with the third air reservoir 28.

In this embodiment, the sensing disc 25 is disposed between the shaft core 3 and the piston 2, and is sleeved on the pull rod 5, the sensing disc 25 can be communicated with the second air storage groove 26 on the piston 2 and the third air storage groove 28 on the pull rod 5 through the second inclined flow passage 27, and the second inclined flow passage 27 on the sensing disc 25 can be communicated with the second air storage groove 26 and the third air storage groove 28 when the cutter is loosened because the second air storage groove 26 and the third air storage groove 28 are annular, and even if the piston 2 rotates around the axis thereof, the continuity of the clean gas flowing from the piston 2 to the pull rod 5 is not affected.

In one embodiment, the end of the mounting chamber 15 remote from the piston 2 is provided with a gas valve 29, the end of the elastic element 16 remote from the piston 2 is elastically pressed against the gas valve 29, the gas valve 29 comprises a second radial flow passage 30 provided on the end face facing the end of the elastic element 16 and a second axial flow passage 31 provided on the inner wall face, the second radial flow passage 30 communicates with the second axial flow passage 31, and the second axial flow passage 31 communicates the mounting chamber 15 with the radially extending section 9.

In the present embodiment, the number of the second radial flow channels 30 is the same as that of the second axial flow channels 31, and the second radial flow channels 30 are in one-to-one correspondence with the second axial flow channels 31, and the gas channels 8 formed by the installation cavity can flow into the annular cavity formed by the annular gas distribution groove 13 and the annular groove 14 through the correspondingly arranged plurality of second radial flow channels 30 and second axial flow channels 31, then flow into the radial extension section 9 after being split, so that smooth circulation of gas is effectively ensured.

A cover 32 is provided at the end of the cylinder 1 to seal the inner cavity of the cylinder 1.

The matching connection relationship between each component of the main shaft knife handle taper hole air cleaning structure in the embodiment is as follows:

the cylinder body 1 is fixedly connected to the main shaft main body part, and the cover body 32 is connected to the cylinder body 1 and is a fixed part; the piston 2 is movable in the axial direction thereof; the induction disc 25 is fixedly connected to the tail end of the pull rod 5 through threads; the pull rod 5 is sleeved in the shaft core 3; the elastic element 16 is sleeved on the pull rod 5 and positioned in the shaft core 3, and can stretch and retract in the axial direction; one end of the air valve 29 is contacted with the end face of the inner hole of the shaft core 3, one end is contacted with the end face of the elastic element 16, and the position of the air valve relative to the shaft core 3 is not changed; the shaft core 3 is fixed in position along the axis direction and can rotate around the axis; the pull claw assembly 6 is connected to the front end of the pull rod 5, so that the clamping and the loosening of the cutter handle 4 on the shaft core 3 are realized, and the cutter handle 4 is respectively contacted with the conical surface and the end surface of the shaft core 3 in the cutter clamping state; in the loose cutter state, the conical surface and the end surface of the conical hole of the spindle shaft core 3 are respectively in clearance with the conical surface and the end surface of the cutter handle 4.

When the piston 2 moves axially leftwards in the cutter clamping state, the piston is firstly contacted with the induction disc 25, then the induction disc 25 and the pull rod 5 are pushed to move in the axial direction, the elastic element 16 is compressed, the cutter handle 4 is separated from the shaft core 3 by the pull claw assembly 6, gaps are formed between the conical surface and the end surface of the cutter handle 4, which are contacted with the shaft core 3, at the moment, the cutter handle 4 can be taken out, and the main shaft is in a cutter loosening state; if no other operation is performed, the piston 2 moves along the axial direction to return to the original state, the pull claw assembly 6, the pull rod 5 and the induction disc 25 move rightwards under the action of the elastic element 16, and the cutter handle 4 is fixedly connected to the shaft core 3 under the action of the pull claw assembly 6 to return to the cutter clamping state.

The cleaning gas flow path process along each part when the knife is loosened is as follows:

in the loose knife state, cleaning gas enters from an air inlet channel 21 on the cylinder body 1 and passes through a first inclined flow channel 22 to reach a first air storage groove 24 formed on the cylinder body 1; the radial section of the air entraining channel 23 on the piston 2 is communicated with the first air storage groove 24 on the cylinder body 1, and passes through the axial section of the air entraining channel 23 on the piston 2 to reach the second air storage groove 26 on the piston 2, wherein a plurality of groups of air entraining channels 23 consisting of the axial section and the radial section are uniformly distributed along the circumferential direction by taking the axis as the center; the cleaning gas passes through the second air storage groove 26 on the piston 2 and the second inclined flow passage 27 on the sensing disc 25 to reach the third air storage groove 28 on the periphery of the pull rod 5, a plurality of radial holes uniformly distributed along the circumferential direction are formed in the third air storage groove 28 and are communicated with the first axial flow passage 19 on the pull rod 5, the cleaning gas passes through the first axial flow passage 19 on the pull rod 5 and the first radial flow passage 20 to reach the gap between the elastic element 16 and the inner hole of the shaft core 3, and a plurality of groups of first radial flow passages 20 and first axial flow passages 19 on the pull rod 5 are uniformly distributed along the circumferential direction of the axis of the first axial flow passage 19; the cleaning gas reaches the gas valve 29, and reaches the radial extension section 9, the axial extension section 10 and the gas blowing hole 11 of the gas channel on the shaft core 3 under the action of the sealing ring 12 through the second radial flow channel 30 and the second axial flow channel 31 on the gas valve 29 and the annular groove 14 on the pull rod 5, so that the cleaning action of the shaft core 3, the tool shank conical surface and the end face is realized.

According to the embodiment of the application, the electric spindle comprises the spindle handle taper hole air cleaning structure, and the spindle handle taper hole air cleaning structure is the spindle handle taper hole air cleaning structure.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a main shaft handle of a knife taper hole air cleaning structure, its characterized in that includes cylinder body (1), piston (2), axle core (3), handle of a knife (4), pull rod (5) and pull claw subassembly (6), piston (2) slip sets up in cylinder body (1), axle core (3) for cylinder body (1) axial fixity, pull rod (5) activity sets up in axle core (3), handle of a knife (4) set up in axle core (3) keep away from the tip of piston (2), pull claw subassembly (6) are installed on pull rod (5) and are located handle of a knife (4) and the hole of axle core (3), pull rod (5) keep away from one end of pull claw subassembly (6) with piston (2) are connected, and can realize the regulation to the loose sword position and the cutting position of pull claw subassembly (6) under the effect of piston (2), be provided with on axle core (3) install handle of a knife (4) tip, pull claw subassembly (7) are located in when shaft core (3) are located in hole (8) are provided with in air passage (8), the sealing structure opens the gas channel (8), and when the pull claw assembly (6) is in the cutting position, the sealing structure seals the gas channel (8).

2. The spindle shank taper hole air cleaning structure according to claim 1, wherein the air passage (8) includes a radially extending section (9) and an axially extending section (10) at one end of the spindle shank (3) near the shank (4), the radially extending section (9) extends radially outwardly from an inner hole of the spindle shank (3), the axially extending section (10) communicates to the mounting taper hole (7) through a laterally extending air blowing hole (11), and the sealing structure includes a seal ring (12) provided at an outer periphery of the tie rod (5);

when the pull claw assembly (6) is positioned at the cutter loosening position, the sealing ring (12) is positioned at one side of the radial extension section (9) far away from the piston (2) and is in sealing fit with the inner hole of the shaft core (3), and the inner hole of the shaft core (3) forms a communicated gas channel (8) between one side of the radial extension section (9) close to the piston (2) and the pull rod (5);

when the pull claw assembly (6) is positioned at the cutting position, the sealing ring (12) is positioned on one side of the radial extension section (9) close to the piston (2) and is in sealing fit with the inner hole of the shaft core (3) so as to cut off the gas channel (8).

3. The spindle shank taper hole air cleaning structure according to claim 2, wherein the shaft core (3) is provided with an annular air dividing groove (13) at a position corresponding to the radial extension section (9), the pull rod (5) is provided with an annular groove (14) at one side of the sealing ring (12) close to the piston (2), and when the pull claw assembly (6) is in a cutter loosening position, the annular air dividing groove (13) is matched with the annular groove (14) to form the air channel (8).

4. The spindle shank taper hole air cleaning structure according to claim 2, wherein the shaft core (3) is provided with a mounting cavity (15), the pull rod (5) is arranged in the mounting cavity (15) in a penetrating manner, an elastic element (16) is arranged between the pull rod (5) and the inner wall of the mounting cavity (15), the elastic element (16) provides elastic restoring force for the pull rod (5), and a channel between the pull rod (5) and the inner wall of the mounting cavity (15) forms the air channel (8).

5. The spindle shank taper hole air cleaning structure according to claim 4, wherein an annular protrusion (17) is arranged at one end of the pull rod (5) close to the piston (2), a shoulder (18) is arranged at one end of the pull rod (5) close to the piston (2), one end of the elastic element (16) is abutted to the annular protrusion (17), and the annular protrusion (17) is axially limited by the shoulder (18).

6. The spindle shank taper air cleaning structure according to claim 4, wherein a first axial flow passage (19) is provided at an end of the pull rod (5) near the piston (2), one end of the first axial flow passage (19) is configured to communicate with an air source, and the other end of the first axial flow passage (19) communicates with the mounting cavity (15) through a first radial flow passage (20).

7. The spindle shank taper hole air cleaning structure according to claim 6, wherein an air inlet channel (21) and a first inclined flow channel (22) communicated with the air inlet channel (21) are arranged on the cylinder body (1), the first inclined flow channel (22) extends to the inner wall of the cylinder body (1), an annular first air storage groove (24) is arranged on the inner wall of the cylinder body (1) corresponding to the first inclined flow channel (22), an air bleed channel (23) is arranged on the piston (2), and the tail end of the air bleed channel (23) is communicated with the first axial flow channel (19).

8. The spindle shank taper hole air cleaning structure according to claim 7, wherein an induction disc (25) is arranged at the end of the pull rod (5) close to the piston (2), an annular second air storage groove (26) is arranged at the tail end of the air entraining channel (23), a second inclined flow channel (27) is arranged on the induction disc (25), an annular third air storage groove (28) is arranged on the periphery of the pull rod (5), the third air storage groove (28) is communicated with the first axial flow channel (19), one end of the second inclined flow channel (27) is communicated with the second air storage groove (26), and the other end of the second inclined flow channel (27) is communicated with the third air storage groove (28).

9. The spindle shank taper air cleaning structure according to any one of claims 4 to 8, wherein an end of said mounting cavity (15) remote from said piston (2) is provided with an air valve (29), an end of said elastic member (16) remote from said piston (2) is elastically pressed against said air valve (29), said air valve (29) includes a second radial flow passage (30) provided on an end face facing an end of said elastic member (16) and a second axial flow passage (31) provided on an inner wall face, said second radial flow passage (30) communicates with said second axial flow passage (31), and said second axial flow passage (31) communicates said mounting cavity (15) with said radially extending section (9).

10. An electric spindle comprising a spindle shank taper hole air cleaning structure, characterized in that the spindle shank taper hole air cleaning structure is the spindle shank taper hole air cleaning structure according to any one of claims 1 to 9.