CN211588543U

CN211588543U - Center goes out water oil pressure tool changing main shaft

Info

Publication number: CN211588543U
Application number: CN201922471288.1U
Authority: CN
Inventors: 叶茂丰
Original assignee: Quanzhou Shengyu Machinery Equipment Co ltd
Current assignee: Quanzhou Shengyu Machinery Equipment Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-29
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a central water-outlet oil-pressure tool-changing main shaft, which comprises a shell, a mandrel and an oil cylinder, wherein the mandrel is rotatably arranged in the shell, an axial through hole is arranged at the center of the mandrel, a hollow pull rod is penetrated in the axial through hole in a sliding way, a positioning groove is arranged on the side wall of the rear end of the hollow pull rod, a lower tool induction ring is sleeved on the periphery of the rear end of the mandrel in a sliding way, a sliding hole extending along the axial direction is arranged on the side wall of the rear end of the mandrel, the lower tool induction ring is provided with a tool-beating push rod which penetrates through the, the connecting seat is fixedly arranged at the rear end of the shell, the connecting body is fixed at the rear end of the connecting seat and forms a sliding cavity, the piston is arranged in the sliding cavity and used for pushing the lower cutter induction ring, the rear end of the connecting body is fixedly provided with a rear cover, the center of the rear cover is fixedly provided with a water inlet seat, the front end of the water inlet seat extends into the rear end of the hollow pull rod, and the connecting body is fixedly provided with an oil inlet seat communicated with the sliding cavity. The main shaft can fully cool the cutter and quickly change the cutter up and down.

Description

Center goes out water oil pressure tool changing main shaft

Technical Field

The utility model belongs to the technical field of the main shaft, concretely relates to center goes out water oil pressure tool changing main shaft.

Background

The electric main shaft is a new technology which integrates a machine tool main shaft and a main shaft motor into a whole and appears in the field of numerical control machine tools, and the electric main shaft, a linear motor technology and a high-speed cutter technology can push high-speed processing to a new era. At present, when a main shaft is used for processing a workpiece, a cooling water pipe is generally arranged at one side beside a cutter, water is sprayed to the cutter through the cooling water pipe for cooling, and the cooling effect is poor.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, an object of the utility model is to provide a center that is good to cutter cooling effect goes out water oil pressure tool changing main shaft.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a central water outlet oil pressure tool changing spindle comprises a shell, a mandrel and an oil cylinder, wherein the mandrel is rotatably installed in the shell, an axial through hole is formed in the center of the mandrel, a hollow pull rod penetrates through the axial through hole in a sliding mode, a disc spring enabling the hollow pull rod to reset backwards is installed in the rear portion of the axial through hole, a pull claw is installed at the front end of the hollow pull rod, a positioning groove is formed in the side wall of the rear end of the hollow pull rod, a lower tool sensing ring is sleeved on the periphery of the rear end of the mandrel in a sliding mode, a sliding hole extending in the axial direction is formed in the side wall of the rear end of the mandrel, a lower tool sensing ring is provided with a tool striking push rod penetrating through the sliding hole and extending into the positioning groove, the oil cylinder comprises a connecting seat, a connecting body and a piston, the connecting seat is fixedly installed at the rear end of the, the utility model discloses a hollow pull rod, including piston, connecting sleeve, connecting body, back lid, connecting body, sliding cavity, piston slide sealedly and install in the sliding cavity, the front side center of piston is provided with the piston rod that is the annular and is used for promoting the lower sword induction ring, the back tip movable sleeve of hollow pull rod is equipped with the adapter sleeve with dabber rear end fixed connection, the adapter sleeve is worn to locate in the central through-hole of connecting body with the clearance, the rear end of connecting body is fixed with the back lid, the center of back lid is fixed with the front end and stretches into the seat of intaking in the hollow pull rod rear end, the connecting body is fixed with and.

Further, still include interior snap ring, outer snap ring, oil seal cover, preceding atmoseal ring and preceding nut, the anterior periphery of dabber is installed in the casing through the front bearing, interior snap ring fixed mounting is terminal surface before the front end inward flange of casing and the outer lane of withstanding the front bearing, outer snap ring fixed mounting is terminal surface before the anterior inner circle that withstands the front bearing of dabber, oil seal cover fixed mounting is on the preceding terminal surface of casing, preceding atmoseal ring fixed mounting is in the front side recess of oil seal cover, preceding nut is fixed to be locked on the anterior external screw thread of dabber and withstands outer snap ring preceding terminal surface, outer snap ring respectively with interior snap ring, oil seal cover clearance fit, preceding nut respectively with oil seal cover, preceding atmoseal ring clearance fit.

Furthermore, an axial air passage is formed in the side wall of the shell, the axial air passage penetrates through the front end face and the rear end face of the cylindrical shell, a transition air passage is formed in the oil seal cover, the rear end of the transition air passage is communicated with the front end of the axial air passage, a radial air passage is formed in the front air seal ring, the outer end of the radial air passage is communicated with the front end of the transition air passage, an air outlet communicated with the inner end of the radial air passage is formed in the front end face of the front air seal ring, and the air outlet faces the front outer flange rear side face of the front nut.

The connecting seat is characterized by further comprising a steel ball retainer, a bearing seat, a balance ring, a rear nut and a sealing cover, wherein the bearing seat is arranged in the front end of the connecting seat in a penetrating manner, the steel ball retainer is arranged between the outer periphery of the front part of the bearing seat and the inner periphery of the front part of the connecting seat, a plurality of uniformly distributed spring seat holes are formed in the rear side of the front part of the connecting seat, springs are arranged in the spring seat holes, and the springs are propped against the front side of a rear outer flange of the bearing; the rear part periphery of the mandrel is installed in the bearing seat through the rear bearing, the balance ring is sleeved on the rear part of the mandrel and props against the front end face of the inner ring of the rear bearing, the rear nut is fixedly locked on the rear part external thread of the mandrel to prop against the rear end face of the inner ring of the rear bearing, the sealing cover is fixedly installed on the rear end face of the bearing seat, and the sealing cover covers the rear bearing and the rear nut.

Furthermore, the connecting seat, the bearing seat and the sealing cover are provided with corresponding first wire outlet holes, and the rear cover, the connecting body and the connecting seat are provided with second wire outlet holes communicated with the first wire outlet holes.

Further, the rear end portion of the hollow pull rod is further sleeved with an air sealing balance cover fixedly connected with the rear end of the connecting sleeve, a rear air sealing ring in clearance fit with the air sealing balance cover is fixed at the center of the rear end of the connecting body, an air inlet hole is formed in the rear cover, an air inlet channel communicated with the air inlet hole is formed in the connecting body, a plurality of air outlet holes which are uniformly distributed and communicated with the air inlet channel are formed in the rear air sealing ring, and an air outlet of the air outlet hole is blown to the air sealing balance cover.

Further, the fixed cover in middle part periphery of dabber is equipped with rotor and two short circuit rings that are located the rotor both ends respectively, the fixed stator that is equipped with in the middle part of the inner chamber of casing around outside the rotor that inlays.

Further, a proximity switch used for sensing the lower knife sensing ring is mounted on the side wall of the connecting seat.

Furthermore, the side wall of the rear cover is provided with an exhaust drain hole.

Compared with the prior art, the utility model discloses be provided with following beneficial effect: the main shaft adopts a central water outlet cooling structure, so that the cutter is well cooled when a workpiece is machined, the cooling effect is better, the service life of the cutter is prolonged, and the machining precision of the workpiece is ensured; meanwhile, an oil pressure tool changing structure is adopted, and the effect of quickly changing tools from top to bottom is achieved.

Drawings

Fig. 1 is a cross-sectional view of the overall structure of the embodiment of the present invention.

Fig. 2 is an enlarged view of the front structure of the embodiment of the present invention.

Fig. 3 is an enlarged view of the rear structure of the embodiment of the present invention.

The labels in the figure are: 1. a housing; 2. a mandrel; 3. a hollow pull rod; 4. a disc spring; 5. pulling a claw; 6. a lower cutter induction ring; 7. a proximity switch; 8. a cutter pushing rod; 9. a connecting seat; 10. a linker; 11. a piston; 12. connecting sleeves; 13. a rear cover; 14. a water inlet seat; 15. an oil inlet seat; 16. an exhaust drain hole; 17. an inner snap ring; 18. an outer snap ring; 19. sealing the oil cover; 20. a front air seal ring; 21. a front nut; 22. a front bearing; 23. a front spacer ring; 24. an axial air passage; 25. a transition gas passage; 26. a radial air passage; 27. a steel ball retainer; 28. a bearing seat; 29. a balance ring; 30. a back nut; 31. a sealing cover; 32. a spring; 33. a rear bearing; 34. a rear spacer ring; 35. a first wire outlet hole; 36. a second wire outlet hole; 37. a gas seal balance cover; 38. a rear air seal ring; 39. an air inlet; 40. an air inlet channel; 41. an air outlet; 42. a rotor; 43. a short circuit ring; 44. a stator; 45. and (4) a flange.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1 to 3, the present embodiment provides a center water outlet oil pressure tool changing spindle, which includes a housing 1, a mandrel 2 and an oil cylinder, wherein the mandrel 2 is rotatably installed in the housing 1, an axial through hole is formed in the center of the mandrel 2, a hollow pull rod 3 is slidably inserted into the axial through hole, the central through hole of the hollow pull rod 3 is used for water outlet, a belleville spring 4 for resetting the hollow pull rod 3 is installed in the rear portion of the axial through hole, a pull claw 5 is installed at the front end of the hollow pull rod 3, a positioning groove (such as a circular groove shown in the figure) is formed in the side wall of the rear end of the hollow pull rod 3, a lower knife induction ring 6 is slidably sleeved on the periphery of the rear end of the mandrel 2, a proximity switch 7 (the type of which is not limited, and a mature product can be selected) for inducing the lower knife induction ring 6 is installed on the side wall of the connecting base, and, the proximity switch 7 generates a signal for automatic tool changing; the rear end side wall of the mandrel 2 is provided with a sliding hole (a long circular hole shown in the figure) extending along the axial direction, the lower cutter induction ring 6 is provided with a cutter pushing rod 8 penetrating through the sliding hole and extending into the positioning groove, the oil cylinder comprises a connecting seat 9, a connecting body 10 and a piston 11, the connecting seat 9 is fixedly arranged at the rear end of the shell 1, the connecting body 10 is fixed at the rear end of the connecting seat 9 in a sealing manner, a sliding cavity is formed between the connecting body and the connecting seat, the piston 11 is arranged in the sliding cavity in a sliding sealing manner, the front side center of the piston 11 is provided with a piston rod which is annular and is used for pushing the lower cutter induction ring 6, the piston rod and the piston 11 are integrally manufactured, the rear end part of the hollow pull rod 3 is movably sleeved with a connecting sleeve 12 fixedly connected with the rear end of the mandrel 2, the connecting sleeve 12 is arranged in a central through hole of, a water inlet seat 14 with the front end extending into the rear end of the hollow pull rod 3 is fixed at the center of the rear cover 13, a water inlet hole for connecting a water inlet pipe is formed in the center of the water inlet seat 14, an oil inlet seat 15 communicated with the rear portion of the sliding cavity is fixed on the connecting body 10, an oil inlet hole for connecting an oil inlet pipe is formed in the center of the oil inlet seat 15, the oil inlet seat 15 is exposed out of the rear cover 13, and an exhaust drain hole 16 is formed in the side wall of the rear cover 13.

In this embodiment, the center water-outlet oil-pressure tool changing spindle further includes an inner snap ring 17, an outer snap ring 18, an oil seal cover 19, a front air seal ring 20 and a front nut 21, the front periphery of the mandrel 2 is installed in the housing 1 through front bearings 22 (specifically, two front bearings 22 are provided with a front spacer ring 23 therebetween), the inner snap ring 17 is fixedly installed at the inner edge of the front end of the housing 1 and abuts against the front end face of the outer ring of the front bearings 22, the outer snap ring 18 is fixedly installed at the front portion of the mandrel 2 and abuts against the front end face of the inner ring of the front bearings 22, the oil seal cover 19 is fixedly installed at the front end face of the housing 1, the front air seal ring 20 is fixedly installed in the front side groove of the oil seal cover 19, the front nut 21 is fixedly locked on the front external thread of the mandrel 2 and abuts against the front end face of the outer snap ring 18, the outer snap ring 18 is in clearance fit with the inner, the front nut 21 is in clearance fit with the oil seal cover 19 and the front air seal ring 20 respectively.

In this embodiment, an axial air passage 24 is formed in the side wall of the housing 1, the axial air passage 24 penetrates through the front end surface and the rear end surface of the cylindrical housing 1, a transition air passage 25 is formed in the oil seal cover 19, the rear end of the transition air passage 25 is communicated with the front end of the axial air passage 24, a radial air passage 26 is formed in the front air seal ring 20, the outer end of the radial air passage 26 is communicated with the front end of the transition air passage 25, an air outlet communicated with the inner end of the radial air passage 26 is formed in the front end surface of the front air seal ring 20, the air outlet faces the front outer flange rear side surface of the front nut 21, impurities such as dust, cooling water and the like can be well prevented from entering the inner cavity of the housing 1 through the front air seal.

In this embodiment, the central water-outlet oil-pressure tool changing spindle further includes a steel ball holder 27 (on which a plurality of steel balls are distributed in an array along the axial direction and the circumferential direction so that the connecting seat 9 and the bearing seat 28 can relatively slide back and forth), a bearing seat 28, a balance ring 29, a back nut 30 and a sealing cover 31, wherein the bearing seat 28 is inserted into the front end of the connecting seat 9, the steel ball holder 27 is arranged between the outer periphery of the front part of the bearing seat 28 and the inner periphery of the front part of the connecting seat 9, a plurality of spring seat holes which are uniformly distributed are formed in the back side of the front part of the connecting seat 9, a spring 32 is installed in each spring seat hole, and the spring 32 abuts against the front side of the; the rear portion periphery of dabber 2 passes through rear bearing 33 (specifically two, is provided with back spacer ring 34 between two rear bearing 33) and installs in bearing frame 28, balanced ring 29 cover is established at the rear portion of dabber 2 and is withstood rear bearing 33's inner circle front end face, rear nut 30 is fixed to be locked on the rear portion external screw thread of dabber 2 in order to withhold rear bearing 33's inner circle rear end face, sealed lid 31 fixed mounting is on the rear end face of bearing frame 28, sealed lid 31 covers rear bearing 33 and rear nut 30. In order to facilitate the wire lead of the motor stator, the connecting seat 9, the bearing seat 28 and the sealing cover 31 are provided with corresponding first wire outlet holes 35, and the rear cover 13, the connecting body 10 and the connecting seat 9 are provided with second wire outlet holes 36 communicated with the first wire outlet holes 35.

In this embodiment, the rear end portion of hollow pull rod 3 still overlaps and is equipped with the balanced lid 37 of atmoseal with adapter sleeve 12 rear end fixed connection, the rear end center of connector 10 is fixed with the balanced lid 37 clearance fit's of atmoseal back atmoseal ring 38, the inlet port 39 has been seted up on the back lid 13, seted up on the connector 10 with the communicating intake duct 40 of inlet port 39, seted up on the back atmoseal ring 38 a plurality of evenly distributed and with the communicating venthole 41 of intake duct 40, the gas outlet of venthole 41 blows to the balanced lid 37 of atmoseal, can prevent well through back atmoseal structure that impurity such as dust, cooling water from getting into the inner chamber of casing 1, has improved the life of main shaft.

In this embodiment, the outer periphery of the central portion of the core shaft 2 is fixedly sleeved with a rotor 42 (such as a copper rotor) and two short-circuit rings 43 respectively located at two ends of the rotor 42, a stator 44 (or called a stator coil) surrounding the rotor 42 is fixedly embedded in the central portion of the inner cavity of the housing 1, and the rotor 42 and the stator 44 form a motor to form an electric spindle. In addition, the periphery of the front part of the shell 1 is provided with a flange 45, and a plurality of bolt holes which are uniformly distributed are formed in the flange 45, so that the main shaft can be conveniently and fixedly installed through a fastening piece.

The working principle of the embodiment is as follows: when tool changing is carried out: firstly, oil is fed from an oil feeding seat 15, a piston 11 is pushed to move forwards through oil pressure, a piston rod of the piston 11 pushes a lower cutter induction ring 6 to move forwards, the lower cutter induction ring 6 pushes a hollow pull rod 3 to move forwards, a pull claw 5 extends forwards, and an original cutter is loosened and falls off; after the new cutter is grabbed by the pulling claw 5, oil in the sliding cavity flows out from the oil inlet seat 15 and is released, the hollow pull rod 3 retracts backwards under the action of the disc spring 4, the piston 11 is pushed by the hollow pull rod 3 to move backwards and return, meanwhile, the pulling claw 5 retracts backwards, and the new cutter is clamped and fixed. When the cutter works, water enters from the water inlet seat 14, and cooling water flows to the pull claw 5 from the central through hole of the hollow pull rod 3 so as to fully cool the cutter, and the cooling effect is good.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art should not depart from the technical solution of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the scope of the present invention.

Claims

1. The utility model provides a center goes out water oil pressure tool changing main shaft which characterized in that: the automatic cutter feeding device comprises a shell, a mandrel and an oil cylinder, wherein the mandrel is rotatably installed in the shell, an axial through hole is formed in the center of the mandrel, a hollow pull rod penetrates through the axial through hole in a sliding mode, a disc spring enabling the hollow pull rod to reset backwards is installed in the rear portion of the axial through hole, a pull claw is installed at the front end of the hollow pull rod, a positioning groove is formed in the side wall of the rear end of the hollow pull rod, a lower cutter induction ring is sleeved on the periphery of the rear end of the mandrel in a sliding mode, a sliding hole extending in the axial direction is formed in the side wall of the rear end of the mandrel, a lower cutter induction ring is provided with a cutter pushing rod penetrating through the sliding hole and extending into the positioning groove, the oil cylinder comprises a connecting seat, a connecting body and a piston, the connecting seat is fixedly installed at the rear end of the shell, the connecting body, the front side center of piston is provided with and is the annular and be used for promoting the piston rod of sword response ring down, the back tip movable sleeve of hollow pull rod is equipped with the adapter sleeve with dabber rear end fixed connection, the adapter sleeve is worn to locate in the central through-hole of connector with the clearance, the rear end of connector is fixed with the back lid, the center of back lid is fixed with the front end and stretches into the seat of intaking in the hollow pull rod rear end, the connector be fixed with the communicating oil feed seat in sliding chamber rear portion, the oil feed seat exposes outside the back lid.

2. The center water-oil pressure tool changing spindle according to claim 1, characterized in that: still include interior snap ring, outer snap ring, oil seal lid, preceding gas seal ring and preceding nut, the anterior periphery of dabber is installed in the casing through the front bearing, interior snap ring fixed mounting is terminal surface before the front end inward flange of casing withstands the outer lane of front bearing, outer snap ring fixed mounting is terminal surface before the anterior inner circle of bearing withstands before the dabber, oil seal lid fixed mounting is on the preceding terminal surface of casing, preceding gas seal ring fixed mounting is in the front side recess of oil seal lid, preceding nut is fixed to be locked on the anterior external screw thread of dabber and withstands terminal surface before the outer snap ring, outer snap ring respectively with interior snap ring, oil seal lid clearance fit, preceding nut respectively with oil seal lid, preceding gas seal ring clearance fit.

3. The center water-oil pressure tool changing spindle according to claim 2, characterized in that: the nut is characterized in that an axial air passage is formed in the side wall of the shell, the axial air passage penetrates through the front end face and the rear end face of the cylindrical shell, a transition air passage is formed in the oil seal cover, the rear end of the transition air passage is communicated with the front end of the axial air passage, a radial air passage is formed in the front air seal ring, the outer end of the radial air passage is communicated with the front end of the transition air passage, an air outlet communicated with the inner end of the radial air passage is formed in the front end face of the front air seal ring, and the air outlet faces the front outer flange rear.

4. The center water-oil pressure tool changing spindle according to claim 1, characterized in that: the steel ball retainer is arranged between the outer periphery of the front part of the bearing seat and the inner periphery of the front part of the connecting seat, a plurality of uniformly distributed spring seat holes are formed in the rear side of the front part of the connecting seat, springs are arranged in the spring seat holes, and the springs prop against the front side of the rear outer flange of the bearing seat; the rear part periphery of the mandrel is installed in the bearing seat through the rear bearing, the balance ring is sleeved on the rear part of the mandrel and props against the front end face of the inner ring of the rear bearing, the rear nut is fixedly locked on the rear part external thread of the mandrel to prop against the rear end face of the inner ring of the rear bearing, the sealing cover is fixedly installed on the rear end face of the bearing seat, and the sealing cover covers the rear bearing and the rear nut.

5. The center water-oil pressure tool changing spindle according to claim 4, characterized in that: the connecting seat, the bearing seat and the sealing cover are provided with corresponding first wire outlet holes, and the rear cover, the connecting body and the connecting seat are provided with second wire outlet holes communicated with the first wire outlet holes.

6. The center water-oil pressure tool changing spindle according to claim 1, characterized in that: the rear end of hollow pull rod still overlaps and is equipped with the balanced lid of atmoseal with adapter sleeve rear end fixed connection, the rear end center of connector is fixed with the balanced lid clearance fit's of atmoseal back atmoseal ring, the inlet port has been seted up on the back lid, seted up on the connector with the communicating intake duct of inlet port, seted up on the back atmoseal ring a plurality of evenly distributed and with the communicating venthole of intake duct, the gas outlet of venthole blows to the balanced lid of atmoseal.

7. The center water-oil pressure tool changing spindle according to claim 1, characterized in that: the fixed cover in middle part periphery of dabber is equipped with rotor and two short circuit rings that are located the rotor both ends respectively, the fixed stator that is equipped with in the middle part of the inner chamber of casing around outside the rotor that inlays.

8. The center water-oil pressure tool changing spindle according to claim 1, characterized in that: and a proximity switch used for sensing the lower knife sensing ring is mounted on the side wall of the connecting seat.

9. The center water-oil pressure tool changing spindle according to claim 1, characterized in that: the side wall of the rear cover is provided with an exhaust drain hole.