CN214768985U - Mechanical conversion type turning and milling electric spindle - Google Patents

Abstract

The utility model discloses a mechanical conversion type turning and milling electric spindle, which comprises a steel cylinder, a front bearing assembly is arranged in the steel cylinder, rear bearing subassembly and rotor, the front bearing subassembly is including the front bearing seat, annular movable plate groove has been seted up to the preceding terminal surface of front bearing seat, the activity inslot is equipped with annular tooth activity dish, the outside cover of rotor is equipped with tooth locking dish, the outside cover of tooth locking dish is equipped with the fixed disk, the preceding terminal surface of tooth activity dish is formed with a plurality of preceding teeth, the rear end face of tooth locking dish is formed with a plurality of internal teeth, the rear end face of fixed disk is formed with a plurality of external teeth, the preceding terminal surface of fixed disk is fixed with the front end housing, annular holding tank has been seted up to the rear end face of front end housing, be equipped with tooth locking lid and fixed disk lid in the annular holding tank, the rear end cavity of tooth activity dish and the front end cavity of tooth locking lid all communicate in turning oil pressure passageway. The utility model discloses have turning concurrently, mill the combined function, can be simultaneously turning and mill fast switch-over between the state.

Description

Mechanical conversion type turning and milling electric spindle

Technical Field

The utility model relates to a main shaft especially relates to a machinery conversion formula turning mills electric main shaft.

Background

In the prior art, turning and milling are basic functions of a composite machine tool, the composite machine tool is developed fastest and has the widest application range in the field of the composite machine tool, and in practical application, a turning tool and a milling cutter can be clamped and finished at one time, so that the machining precision is improved, the manufacturing process period of a product can be greatly shortened, and the machining efficiency is improved. However, for the built-in spindle, how to implement the combined turning and milling functions based on a set of spindles and how to complete the tool switching quickly and accurately is a technical problem to be solved urgently in the prior art.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's not enough, provide one kind and have turning concurrently, mill complex function, simultaneously can be at turning and mill the mechanical transformation formula turning of fast switch-over between the state and mill the electric main shaft.

In order to solve the technical problem, the utility model adopts the following technical scheme.

The utility model provides a machinery conversion formula turning mills electric main shaft, it is including the steel cylinder, be equipped with preceding bearing assembly, back bearing assembly and rotor in the steel cylinder, both ends pass respectively around the rotor preceding bearing assembly with back bearing assembly, preceding bearing assembly is including the front bearing frame, annular movable dish groove has been seted up to the preceding terminal surface of front bearing frame, annular tooth activity dish and the two sliding fit of being equipped with in the activity dish groove, the outside cover of rotor is equipped with tooth locking dish and the two fixed connection, the outside cover of tooth locking dish is equipped with the fixed disk and is equipped with the gap between the two, the fixed disk with front bearing frame fixed connection, the preceding terminal surface of tooth activity dish is formed with a plurality of preceding teeth, the rear end face of tooth locking dish is formed with a plurality of internal teeth, the rear end face of fixed disk is formed with a plurality of external teeth, the inner teeth are aligned with the outer teeth one by one, the inner teeth and the outer teeth are aligned with concave positions between every two adjacent front teeth, a front end cover is fixed on the front end face of the fixed disc, an annular accommodating groove is formed in the rear end face of the front end cover, a tooth locking cover and a fixed disc cover are arranged in the annular accommodating groove, the fixed disc cover is sleeved on the outer side of the tooth locking cover, the tooth locking cover and the fixed disc cover can slide back and forth relative to the annular accommodating groove, a step ring protrudes from the outer side wall of the tooth locking cover and is aligned with the front end face of the fixed disc cover, a plurality of pin holes are formed in the fixed disc, ejector pins penetrate through the pin holes and are in sliding fit with the ejector pins, and the front end and the rear end of each ejector pin are aligned with the tooth movable disc and the fixed disc cover respectively; turning oil pressure channels which are communicated in sequence are formed in the steel cylinder, the front bearing seat, the fixed disc and the front end cover, a rear end cavity of the tooth movable disc and a front end cavity of the tooth locking cover are communicated with the turning oil pressure channels, when hydraulic oil is injected into the turning oil pressure channels, the hydraulic oil drives the tooth movable disc to move forwards and drives the tooth locking cover to move backwards, so that the inner teeth and the outer teeth are clamped into concave positions between every two adjacent front teeth, meanwhile, the tooth locking cover abuts against the front end of the tooth locking disc, and the rotor is locked by means of matching of the tooth movable disc, the fixed disc and the tooth locking disc; the steel cylinder the front axle bearing the fixed disk with set up the oil pressure passageway that mills that communicates in proper order in the front end housing, the front end cavity of fixed disk lid communicate in mill the oil pressure passageway, work as when milling the interior injection hydraulic oil of oil pressure passageway, borrow by hydraulic oil orders about the fixed disk lid is to the back motion and orders about tooth locking lid removes forward, the fixed disk lid passes through the knock pin promotes backward tooth activity dish, tooth activity dish with tooth locking lid simultaneously with tooth locking dish separation, so that the rotor removes the locking.

Preferably, the pull rod penetrates through the rotor, the rear bearing assembly comprises a rear bearing seat, the rear bearing seat is fixed at the rear end of the steel cylinder, a rear cover is fixed at the rear end of the rear bearing seat, and an oil cylinder assembly used for driving the pull rod to move forwards is arranged on the rear cover.

Preferably, the outer side of the rotor is sleeved with a rotor core, the inner side of the steel cylinder is fixed with a stator assembly, and the rotor core is arranged in the stator assembly in a penetrating manner and a gap is formed between the rotor core and the stator assembly.

Preferably, a plurality of magnet slots are formed in the side wall of the rotor core, the magnet slots are sequentially distributed along the circumferential direction of the rotor core, and magnet pieces are inserted into the magnet slots.

Preferably, a ring spraying water inlet channel is formed in the steel cylinder, a front bearing cooling water channel is formed in the outer side wall of the front bearing seat, the steel cylinder, the front bearing seat, the fixed disc and a ring spraying water outlet channel which is communicated in sequence are formed in the front end cover, the ring spraying water inlet channel, the front bearing cooling water channel and the ring spraying water outlet channel are communicated in sequence, a plurality of ring nozzles are arranged on the front end face of the front end cover, and the plurality of ring nozzles are all communicated with the ring spraying water outlet channel.

Preferably, a cooling water inlet channel is formed in the steel cylinder, a cooling water outlet channel is formed in the steel cylinder and the rear bearing seat, a water-cooling inner sleeve is arranged in the steel cylinder in a penetrating mode and is in sealing fit with the steel cylinder, an intermediate cooling channel is formed in the outer side wall of the water-cooling inner sleeve, a rear bearing chamber is arranged in the rear bearing seat, a rear bearing cooling water channel is formed in the outer side wall of the rear bearing chamber, and the cooling water inlet channel, the intermediate cooling channel, the cooling water outlet channel and the rear bearing cooling water channel are sequentially communicated.

The utility model discloses an among the mechanical conversion formula turning milling electric main shaft, tooth locking dish, tooth activity dish and fixed disk have been set up between rotor and front bearing seat, require the rotor to be unrotatable when the main shaft need switch into the turning mode, at this moment to inject hydraulic oil in the turning oil pressure passageway, hydraulic oil orders about tooth activity dish with tooth locking lid relative motion, until the internal tooth with the equal card of external tooth is gone into in the concave position between two adjacent front teeth, and utilizes tooth locking lid supports tightly the front end of tooth locking dish makes tooth activity dish the fixed disk with tooth locking dish joint cooperation each other, and then will the rotor locking, the cutter of main shaft front end are the fixed state, get into the turning state from this. When needs switch over to mill the mode, to mill and inject hydraulic oil in the oil pressure passageway, in order to order about tooth activity dish with tooth locking lid is kept away from simultaneously tooth locking dish, tooth activity dish with tooth locking lid simultaneously with tooth locking dish separation, in order to make the rotor removes the locking, and the cutter of main shaft front end installation this moment is rotatable state, gets into the milling state from this. Based on the above principle, the utility model discloses have had the turning concurrently, milled the combined function to can be at the turning and mill fast switch over between the state, satisfied the application demand betterly.

Drawings

FIG. 1 is a partial cross-sectional view of an electric spindle;

FIG. 2 is a partial sectional view II of the motorized spindle;

FIG. 3 is a view showing the structure of the tooth locking disk, the tooth movable disk and the fixed disk;

FIG. 4 is a first cross-sectional view of the front end structure of the spindle;

FIG. 5 is a second sectional view of the front end structure of the main shaft;

FIG. 6 is a third sectional view of the front end structure of the main shaft;

FIG. 7 is a cross-sectional view of the rear end structure of the spindle;

FIG. 8 is a view of the piston;

FIG. 9 is a view showing the construction of the cylinder;

FIG. 10 is a block diagram of the tail cap;

FIG. 11 is a block diagram of the reservoir plate;

FIG. 12 is a block diagram of the rotor, rotor core and front bearing assembly;

fig. 13 is a cross-sectional view of the rotor and rotor core;

FIG. 14 is a block diagram of a bearing retainer ring;

FIG. 15 is a cross-sectional view of the oil drain cylinder liner;

FIG. 16 is a perspective view of the oil drain cylinder liner;

fig. 17 is a structural view of a rotor core and magnet pieces;

FIG. 18 is a partial cross-sectional view three of the motorized spindle;

fig. 19 is a partial cross-sectional view of the fourth motorized spindle.

Detailed Description

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Example one

The embodiment provides a mechanical conversion type turning and milling electric spindle, which is shown in a combined drawing 1-6 and comprises a steel cylinder 1, wherein a front bearing assembly 2, a rear bearing assembly 3 and a rotor 4 are arranged in the steel cylinder 1, the front end and the rear end of the rotor 4 respectively penetrate through the front bearing assembly 2 and the rear bearing assembly 3, the front bearing assembly 2 comprises a front bearing seat 20, an annular movable disk groove 21 is formed in the front end face of the front bearing seat 20, an annular movable tooth disk 22 and a sliding fit of the annular movable tooth disk 22 and the rear bearing assembly are arranged in the movable disk groove 21, a tooth locking disk 40 and a fixed connection of the tooth locking disk and the rear bearing assembly are sleeved on the outer side of the rotor 4, a fixed disk 23 is sleeved on the outer side of the tooth locking disk 40, a gap is formed between the fixed disk 23 and the front bearing seat 20 and the fixed connection, a plurality of front teeth 24 are formed on the front end face of the tooth movable disk 22, the rear end face of tooth locking dish 40 is formed with a plurality of internal tooth 41, the rear end face of fixed disk 23 is formed with a plurality of external tooth 25, internal tooth 41 with external tooth 25 aligns one by one, just internal tooth 41 with external tooth 25 all aligns with concave 240 between two adjacent front tooth 24, the preceding terminal surface of fixed disk 23 is fixed with front end housing 26, annular holding tank 260 has been seted up to the rear end face of front end housing 26, be equipped with tooth locking lid 261 and fixed disk lid 262 in the annular holding tank 260, fixed disk lid 262 cover is located the outside of tooth locking lid 261, just tooth locking lid 261 with fixed disk lid 262 homoenergetic is relative annular holding tank 260 slides from beginning to end, the lateral wall protrusion of tooth locking lid 261 has step ring 263, step ring 263 with the preceding terminal surface of fixed disk lid 262 aligns, a plurality of pinholes 230 have been seted up on the fixed disk 23, an ejector pin 231 penetrates through the pin hole 230 and is in sliding fit with the pin hole, and the front end and the rear end of the ejector pin 231 are respectively aligned with the tooth movable disc 22 and the fixed disc cover 262;

turning oil pressure channels 270 which are communicated in sequence are formed in the steel cylinder 1, the front bearing seat 20, the fixed disc 23 and the front end cover 26, a rear end cavity of the tooth movable disc 22 and a front end cavity of the tooth locking cover 261 are communicated with the turning oil pressure channels 270, when hydraulic oil is injected into the turning oil pressure channels 270, the hydraulic oil drives the tooth movable disc 22 to move forwards and drives the tooth locking cover 261 to move backwards, so that the inner teeth 41 and the outer teeth 25 are clamped into concave positions 240 between two adjacent front teeth 24, meanwhile, the tooth locking cover 261 abuts against the front end of the tooth locking disc 40, and the rotor 4 is locked by means of matching of the tooth movable disc 22, the fixed disc 23 and the tooth locking disc 40;

the steel cylinder 1 the front bearing seat 20 the fixed disk 23 with set up the milling oil pressure passageway 271 that communicates in proper order in the front end housing 26, the front end cavity of fixed disk cover 262 communicate in mill oil pressure passageway 271, work as when milling oil pressure and injecting hydraulic oil in the oil pressure passageway 271, borrow by hydraulic oil orders about fixed disk cover 262 rearward movement and orders about tooth locking lid 261 forward movement, fixed disk cover 262 passes through knock pin 231 promotes backward tooth activity dish 22, tooth activity dish 22 with tooth locking lid 261 simultaneously with tooth locking dish 40 separation, so that the locking is removed to rotor 4.

In the above-mentioned structure, set up tooth locking dish, tooth activity dish and fixed disk between rotor 4 and front bearing frame 20, require rotor 4 not rotatable when the main shaft needs to switch into the turning mode, at this moment to inject hydraulic oil in turning oil pressure passageway 270, hydraulic oil orders to tooth activity dish 22 with tooth locking lid 261 relative motion, until internal tooth 41 with in the concave position 240 between two adjacent front teeth 24 is all gone into to external tooth 25, and utilize tooth locking lid 261 supports tightly the front end of tooth locking dish 40 makes tooth activity dish 22 fixed disk 23 with tooth locking dish 40 joint cooperation each other, and then will rotor 4 locking, the cutter of main shaft front end are the fixed state, gets into the turning state from this. When the milling mode needs to be switched, hydraulic oil is injected into the milling oil pressure channel 271 so as to drive the tooth movable disc 22 and the tooth locking cover 261 to be away from the tooth locking disc 40 at the same time, the tooth movable disc 22 and the tooth locking cover 261 are separated from the tooth locking disc 40 at the same time, so that the rotor 4 is unlocked, and a cutter mounted at the front end of the spindle is in a rotatable state, so that the spindle enters a milling state. Based on the above principle, the utility model discloses have had the turning concurrently, milled the combined function to can be at the turning and mill fast switch over between the state, satisfied the application demand betterly.

About the utility model discloses other structures of main shaft, in this embodiment, wear to be equipped with pull rod 5 in the rotor 4, back bearing assembly 3 is including back bearing frame 30, back bearing frame 30 is fixed in the rear end of steel cylinder 1, the rear end of back bearing frame 30 is fixed with back lid 6, be equipped with on the back lid 6 and be used for ordering about the hydro-cylinder subassembly 7 of pull rod 5 forward motion.

Further, the outside cover of rotor 4 is equipped with rotor core 42, the inboard of steel cylinder 1 is fixed with stator module 10, rotor core 42 wear to locate in stator module 10 and have the gap between the two.

In order to better mount the magnets and prevent the magnet pieces from shifting and falling off during high-speed operation, in the embodiment, referring to fig. 17, a plurality of magnet slots 420 are formed in the side wall of the rotor core 42, the plurality of magnet slots 420 are sequentially distributed along the circumferential direction of the rotor core 42, and the magnet pieces 421 are inserted into the magnet slots 420.

As shown in fig. 18 and 19, the present embodiment further includes a front-end ring water spraying mechanism, specifically, a ring water spraying inlet channel 101 is formed in the steel cylinder 1, a front bearing cooling water channel 201 is formed on an outer side wall of the front bearing seat 20, ring water spraying outlet channels 102 which are sequentially communicated are formed in the steel cylinder 1, the front bearing seat 20, the fixed disk 23 and the front end cover 26, the ring water spraying inlet channel 101, the front bearing cooling water channel 201 and the ring water spraying outlet channel 102 are sequentially communicated, a plurality of ring nozzles 265 are formed on a front end surface of the front end cover 26, and the plurality of ring nozzles 265 are all communicated with the ring water spraying outlet channel 102.

In order to improve the cooling efficiency, in this embodiment, cooling water inlet channel 102 has been seted up in steel cylinder 1, steel cylinder 1 with cooling water outlet channel 105 has been seted up in rear bearing seat 30, wear to be equipped with water-cooling endotheca 103 and the two sealed cooperation in the steel cylinder 1, middle cooling channel 104 has been seted up to the lateral wall of water-cooling endotheca 103, be equipped with rear bearing room 301 in the rear bearing seat 30, rear bearing cooling water course 302 has been seted up to the lateral wall of rear bearing room 301, cooling water inlet channel 102 middle cooling channel 104 cooling water outlet channel 105 with rear bearing cooling water course 302 communicates in proper order.

Example two

The embodiment provides a floating tool releasing cylinder mechanism for a spindle, which can reduce stress applied to a bearing in the tool releasing process and further improve the service life and the overall performance of the spindle, and is used for the tail end of the spindle, as shown in fig. 7 to 11, the spindle comprises a steel cylinder 1, a front bearing assembly 2, a rear bearing assembly 3 and a rotor 4 are arranged in the steel cylinder 1, the front end and the rear end of the rotor 4 respectively penetrate through the front bearing assembly 2 and the rear bearing assembly 3, a pull rod 5 penetrates through the rotor 4, the front bearing assembly 2 comprises a front bearing seat 20, the front bearing seat 20 is fixed at the front end of the steel cylinder 1, a tooth locking disc 40 is sleeved outside the rotor 4 and fixedly connected with the front bearing assembly and the rear bearing assembly, a front end cover 26 is fixed at the front end of the front bearing seat 20, the front end face of the tooth locking disc 40 and the rear end face of the front end cover 26 are oppositely arranged, and a gap is formed between the front end face and the front end face of the tooth locking disc and the front end cover 26, the rear bearing assembly 3 comprises a rear bearing seat 30, the rear bearing seat 30 is fixed at the rear end of the steel cylinder 1, a rear cover 6 is fixed at the rear end of the rear bearing seat 30, an oil cylinder assembly 7 is arranged on the rear cover 6, the oil cylinder assembly 7 comprises an oil cylinder 70, the oil cylinder 70 is fixedly connected with the rear end of the rear cover 6, a tail cover 71 is fixed at the rear end of the oil cylinder 70, a piston 72 is arranged in the oil cylinder 70 and is in sliding fit with the piston 72, the front end of the piston 72 is aligned with the rear end of the pull rod 5, a cutter loosening oil passage 73 which is communicated in sequence is formed in the rear cover 6, the oil cylinder 70 and the tail cover 71, the cutter loosening oil passage 73 is communicated with a rear end cavity of the piston 72, a cutter clamping oil passage 74 which is communicated in sequence is formed in the oil cylinder 70 and the rear cover 6, and the cutter clamping oil passage 74 are communicated with a front end cavity of the piston 72, when hydraulic oil is injected into the cutter loosening oil passage 73, the hydraulic oil drives the piston 72 to push the pull rod 5 and the rotor 4 forwards, the stress borne by the rotor 4 is loaded on the front end cover 26 through the tooth locking disc 40, and when hydraulic oil is injected into the cutter clamping oil passage 74, the hydraulic oil drives the piston 72 to move backwards, so that the piston 72 releases the thrust applied to the pull rod 5.

In the structure, the oil cylinder assembly 7 consisting of the oil cylinder 70, the piston 72 and the tail cover 71 is arranged at the rear end of the main shaft, the tooth locking disc 40 is sleeved outside the rotor 4, when the cutter releasing action is executed, hydraulic oil drives the piston 72 to push the pull rod 5 and the rotor 4 forward, and after the pull rod 5 is in place, the stress borne by the rotor 4 is loaded on the front end cover 26 through the tooth locking disc 40, so that the stress borne by the bearing can be reduced or even eliminated, the bearing is protected in the process of executing the cutter releasing action, and the service life and the overall performance of the main shaft are improved.

In order to apply a backward thrust to the piston 72, in this embodiment, an inner cylinder step ring 701 is formed on an inner side wall of the cylinder 70, an outer piston step ring 721 is formed on an outer side wall of the piston 72, the outer piston step ring 721 is located at a rear side of the inner cylinder step ring 701, a cutter clamping oil chamber 722 is formed between the inner cylinder step ring 701 and the outer piston step ring 721, and the cutter clamping oil chamber 722 is communicated with the cutter clamping oil passage 74.

Preferably, an oil storage disc 401 is fixed to an inner wall of the rear cover 6, and the oil storage disc 401 is fitted to an outer side of the rotor 4 with a gap therebetween.

Further, an inner annular end of the oil pan 401 is formed with an oil reservoir stepped ring 402 protruding rearward.

In this embodiment, the outer sidewall of the oil storage step ring 402 is provided with a reverse-buckling groove 403.

In the structure, the oil storage disc 401 is arranged, so that the oil cylinder assembly 7 can be separated from the inside of the main shaft, hydraulic oil is prevented from permeating into the main shaft, particularly after the oil storage step ring 402 and the inverted groove 403 are arranged, the functions of oil blocking and oil storage are further realized, and the oil cylinder assembly 7 can be better popularized and applied in main shaft equipment.

EXAMPLE III

In practical application, in the current main shaft, the iron core needs to be established to the cover in the rotor outside of main shaft, however the iron core needs to keep fixed with the rotor, just can be in iron core inside magnet and stator cooperation in-process, steadily order about the rotor operation reliably, during actual installation, rotor core and rotor generally adopt high temperature interference fit's mode to install fixedly, because of the relation of connection between rotor and the iron core is too inseparable, so need carry out appropriate beating to the rotor in the dismantlement in-process, this kind of dismantlement mode not only is difficult to take out the rotor, and cause the bearing to damage easily, it is therefore visible, how to conveniently install and take out the rotor, avoid haring adjacent part simultaneously, be the technical problem that prior art waited to solve.

In this regard, the present embodiment proposes a rotor mechanism that facilitates the removal and installation of the rotor while avoiding damage to the components of the bearing, as shown in conjunction with fig. 12 to 17, it comprises a rotor 4 and a rotor core 42, an oil discharge cylinder sleeve 43 is arranged in the rotor core 42 in a penetrating way and the two are fixedly connected, the rotor 4 penetrates through the oil discharge cylinder sleeve 43 and is tightly matched with the oil discharge cylinder sleeve 43, two oil injection slotted holes 430 are formed in the oil discharge cylinder sleeve 43, the oil injection slotted holes 430 are inclined, and the two oil injection slotted holes 430 are symmetrically distributed on both sides of the rotor 4 in a V shape, the oil outlets at the front ends of the oil injection slotted holes 430 face the outer side wall of the rotor 4, when the two oil injection slots 430 are simultaneously filled with hydraulic oil, the hydraulic oil applies a forward thrust to the rotor 4, so as to drive the rotor 4 to be pulled out from the front end opening of the oil discharge cylinder sleeve 43.

In the above structure, the oil discharge cylinder sleeve 43 is arranged between the rotor core 42 and the rotor 1, and since the oil injection slots 430 symmetrically distributed in a V shape are formed in the side wall of the oil discharge cylinder sleeve 43, when hydraulic oil is simultaneously injected into the two oil injection slots 430, the hydraulic oil is distributed around the rotor 4 and applies forward thrust to the rotor 4, and the rotor 4 is driven to be pulled out from the front end opening of the oil discharge cylinder sleeve 43 under the forward thrust and the lubricating action. Compared with the prior art, the utility model discloses make things convenient for the dismantlement and the installation work of rotor greatly, need not to beat the rotor simultaneously, and then avoid causing the harm to the neighbouring part of bearing etc. has satisfied the application needs betterly.

In order to make the thrust exerted by the hydraulic oil on the rotor 4 more balanced, in this embodiment, the outer side wall of the rotor 4 is provided with an outer shallow oil groove 405 with a preset width, and the oil outlet at the front end of the oil injection slot hole 430 is communicated with the outer shallow oil groove 405.

Preferably, a bearing fixing ring 44 is screwed to the outer side of the rotor 4, an inner spacer 45 and a front bearing 203 are fitted to the outer side of the rotor 4, and the bearing fixing ring 44, the inner spacer 45 and an inner ring end of the front bearing 203 are in contact with each other in this order.

In this embodiment, the bearing fixing ring 44 is provided with a pin positioning hole 440, and a tightening pin for tightening the rotor 4 is disposed in the pin positioning hole 440. Further, the pin positioning hole 440 is inclined. The tightening pin is used for fastening the bearing fixing ring 44 and the rotor 4.

In order to facilitate the detachment of the bearing fixing ring 44, in the present embodiment, a wrench notch 441 is formed on an outer side wall of the bearing fixing ring 44.

Regarding the specific structure of the rotor core 42, in the present embodiment, a plurality of magnet slots 420 are formed in the side wall of the rotor core 42, the plurality of magnet slots 420 are sequentially distributed along the circumferential direction of the rotor core 42, and magnet pieces 421 are inserted into the magnet slots 420.

Preferably, a front balancing ring 422 and a rear balancing ring 423 are fixed to the front end and the rear end of the rotor core 42, respectively, and both the front balancing ring 422 and the rear balancing ring 423 are sleeved outside the oil discharge cylinder sleeve 43.

Further, the front balance ring 422 and the rear balance ring 423 are respectively provided at side portions thereof with a plurality of adjustment screw holes 425, and dynamic balance of the rotor 4 and the rotor core 42 is adjusted by adjusting the adjustment screw holes 425.

The above is only the embodiment of the present invention, and is not intended to limit the present invention, and all modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included within the protection scope of the present invention.

Claims (6)

1. The utility model provides a machinery conversion formula turning mills electric main shaft, its characterized in that, including the steel cylinder, be equipped with preceding bearing subassembly, back bearing subassembly and rotor in the steel cylinder, both ends pass respectively around the rotor preceding bearing subassembly with back bearing subassembly, preceding bearing subassembly includes the front bearing frame, annular movable dish groove has been seted up to the preceding terminal surface of front bearing frame, the activity dish inslot is equipped with annular tooth activity dish and the two sliding fit, the outside cover of rotor is equipped with tooth locking dish and the two fixed connection, the outside cover of tooth locking dish is equipped with the fixed disk and is equipped with the gap between the two, the fixed disk with front bearing frame fixed connection, the preceding terminal surface of tooth activity dish is formed with a plurality of preceding teeth, the rear end face of tooth locking dish is formed with a plurality of internal teeth, the rear end face of fixed disk is formed with a plurality of external teeth, the inner teeth are aligned with the outer teeth one by one, the inner teeth and the outer teeth are aligned with concave positions between every two adjacent front teeth, a front end cover is fixed on the front end face of the fixed disc, an annular accommodating groove is formed in the rear end face of the front end cover, a tooth locking cover and a fixed disc cover are arranged in the annular accommodating groove, the fixed disc cover is sleeved on the outer side of the tooth locking cover, the tooth locking cover and the fixed disc cover can slide back and forth relative to the annular accommodating groove, a step ring protrudes from the outer side wall of the tooth locking cover and is aligned with the front end face of the fixed disc cover, a plurality of pin holes are formed in the fixed disc, ejector pins penetrate through the pin holes and are in sliding fit with the ejector pins, and the front end and the rear end of each ejector pin are aligned with the tooth movable disc and the fixed disc cover respectively;

turning oil pressure channels which are communicated in sequence are formed in the steel cylinder, the front bearing seat, the fixed disc and the front end cover, a rear end cavity of the tooth movable disc and a front end cavity of the tooth locking cover are communicated with the turning oil pressure channels, when hydraulic oil is injected into the turning oil pressure channels, the hydraulic oil drives the tooth movable disc to move forwards and drives the tooth locking cover to move backwards, so that the inner teeth and the outer teeth are clamped into concave positions between every two adjacent front teeth, meanwhile, the tooth locking cover abuts against the front end of the tooth locking disc, and the rotor is locked by means of matching of the tooth movable disc, the fixed disc and the tooth locking disc;

the steel cylinder the front axle bearing the fixed disk with set up the oil pressure passageway that mills that communicates in proper order in the front end housing, the front end cavity of fixed disk lid communicate in mill the oil pressure passageway, work as when milling the interior injection hydraulic oil of oil pressure passageway, borrow by hydraulic oil orders about the fixed disk lid is to the back motion and orders about tooth locking lid removes forward, the fixed disk lid passes through the knock pin promotes backward tooth activity dish, tooth activity dish with tooth locking lid simultaneously with tooth locking dish separation, so that the rotor removes the locking.

2. The mechanically-converted turning and milling electric spindle according to claim 1, wherein a pull rod penetrates through the rotor, the rear bearing assembly comprises a rear bearing seat fixed to the rear end of the steel cylinder, a rear cover is fixed to the rear end of the rear bearing seat, and an oil cylinder assembly for driving the pull rod to move forwards is arranged on the rear cover.

3. The mechanically-converted turning and milling electric spindle according to claim 1, wherein a rotor core is sleeved outside the rotor, a stator assembly is fixed inside the steel cylinder, and the rotor core is arranged in the stator assembly in a penetrating manner with a gap therebetween.

4. The mechanically-converted turning and milling electric spindle according to claim 3, wherein a plurality of magnet slots are formed in the side wall of the rotor core, the plurality of magnet slots are sequentially distributed along the circumferential direction of the rotor core, and magnet pieces are inserted into the magnet slots.

5. The mechanically-converted turning and milling electric spindle according to claim 1, wherein a ring spraying water inlet channel is formed in the steel cylinder, a front bearing cooling water channel is formed in the outer side wall of the front bearing seat, sequentially-communicated ring spraying water channels are formed in the steel cylinder, the front bearing seat, the fixed disk and the front end cover, the ring spraying water inlet channel, the front bearing cooling water channel and the ring spraying water channel are sequentially communicated, and a plurality of ring nozzles are arranged on the front end surface of the front end cover and are all communicated with the ring spraying water channel.

6. The mechanically-converted turning and milling electric spindle according to claim 2, wherein a cooling water inlet channel is formed in the steel cylinder, a cooling water outlet channel is formed in the steel cylinder and the rear bearing seat, a water-cooled inner sleeve is arranged in the steel cylinder in a penetrating manner and is in sealing fit with the steel cylinder, an intermediate cooling channel is formed on an outer side wall of the water-cooled inner sleeve, a rear bearing chamber is arranged in the rear bearing seat, a rear bearing cooling water channel is formed on an outer side wall of the rear bearing chamber, and the cooling water inlet channel, the intermediate cooling channel, the cooling water outlet channel and the rear bearing cooling water channel are sequentially communicated.

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