CN211360671U - Direct-coupled mechanical main shaft - Google Patents
Direct-coupled mechanical main shaft Download PDFInfo
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- CN211360671U CN211360671U CN201922183298.5U CN201922183298U CN211360671U CN 211360671 U CN211360671 U CN 211360671U CN 201922183298 U CN201922183298 U CN 201922183298U CN 211360671 U CN211360671 U CN 211360671U
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Abstract
The utility model discloses a associated mode machinery main shaft, it is including steel cylinder and rotor, the rear end of steel cylinder is fixed with the back of the body lid, the rear end of back of the body lid is equipped with the oil cylinder subassembly, wear to be equipped with the pull rod of cavity form in the rotor, the front end of pull rod is equipped with draws the claw subassembly, the front end of drawing the claw subassembly is used for connecting the handle of a knife of cavity form, the front end of rotor is formed with the taper opening, the rear end of handle of a knife is formed with the taper tip, the outside of handle of a knife is formed with annular shoulder, annular shoulder is located the front end of taper tip, the front end of pull rod is fixed with the fixed cover of hollow pull rod, a plurality of front end side openings along circumference evenly distributed are seted up to the lateral part of the fixed cover of pull rod, a plurality of L shape air flues have been seted up in the rotor, the first opening and the front end side. The utility model discloses can effectively clean the rear end face of handle of a knife, can play the water-cooling effect, can satisfy high rigidity processing requirement at the operation in-process.
Description
Technical Field
The utility model relates to a main shaft especially relates to a associated mode machinery main shaft.
Background
The main shaft is a power device for performing precision machining, the front end of the main shaft is used for installing a tool holder, a tool for machining is installed on the tool holder, the main shaft is generally required to perform operations such as tool loosening, tool clamping, tool changing and the like in the using process, however, after the tool is loosened, the front end of the main shaft is separated from the tool holder, so that water or dust easily enters, in order to play a role in water and dust prevention, a central air blowing mode is generally adopted in the tool loosening process, but the central air blowing mode has a cleaning function at a small part of the rear end of the tool holder, so that the dust and the water outside the tool holder cannot be effectively removed, in the high-speed operation process of the main shaft, the dust and the water outside the tool holder also possibly enter the main shaft, so that the machining precision and the service life of the main shaft are influenced, in addition, in the existing main shaft, a connecting rod on the tool holder is generally used, the stress strength of the connection mode is not high, and the high-rigidity processing requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's not enough, provide a back end face that can effective clean handle of a knife, can play the water-cooling effect, can satisfy the associated mode machinery main shaft of high rigidity processing requirement at the operation in-process.
In order to solve the technical problem, the utility model adopts the following technical scheme.
A direct-coupled mechanical spindle comprises a steel cylinder, wherein a front bearing assembly, a rear bearing assembly and a rotor are arranged in the steel cylinder, the front bearing assembly and the rear bearing assembly are respectively close to the front end and the rear end of the steel cylinder, the front end and the rear end of the rotor respectively penetrate through the front bearing assembly and the rear bearing assembly, a back cover is fixed at the rear end of the steel cylinder, an oil cylinder assembly is arranged at the rear end of the back cover, a hollow pull rod penetrates through the rotor, cooling water or compressed air is injected into the pull rod, a disc spring assembly is sleeved on the outer side of the pull rod, the oil cylinder assembly is used for driving the pull rod to slide forwards to perform a cutter loosening action, a pull claw assembly is arranged at the front end of the pull rod, the front end of the pull claw assembly is used for being connected with a hollow cutter handle, a tapered opening is formed at the front end of the rotor, and a tapered end is, the outer surface of the conical end part is matched with the inner wall of the conical opening, an annular shoulder is formed on the outer side of the cutter handle and located at the front end of the conical end part, a hollow pull rod fixing sleeve is fixed at the front end of the pull rod, a plurality of front end side holes which are uniformly distributed along the circumferential direction are formed in the side part of the pull rod fixing sleeve, a plurality of L-shaped air passages are formed in the rotor and uniformly distributed along the circumferential direction of the rotor, the first openings of the L-shaped air passages face the pull rod, the first openings of the L-shaped air passages correspond to the front end side holes one by one, the second openings of the L-shaped air passages face the rear end face of the annular shoulder, when the mechanical spindle performs a cutter clamping action, cooling water is injected into the pull rod, the pull rod is driven to slide backwards by the disc spring assembly, and the front end side holes are staggered with the first openings of the L-shaped air passages, the conical opening is tightly matched with the conical end part, and a cutter arranged at the front end of the cutter handle is cooled by cooling water on the inner side of the cutter handle; when machinery main shaft carries out the knife-loosening action, to inject compressed air into in the pull rod, borrow by the hydro-cylinder subassembly orders the pull rod is slided forward, the front end side opening with the first opening one-to-one of L shape air flue communicates each other, the air current in the pull rod is in proper order via draw claw subassembly and the cone opening with the clearance between the cone tip blows out, again by the front end side opening with L shape air flue to the front end of rotor blows out.
Preferably, the pull claw assembly comprises a hollow front connecting rod and a plurality of pull claws, the rear end of the front connecting rod is screwed and fixed in the front end opening of the pull rod, the rear ends of the pull claws surround the front end of the front connecting rod, the rear ends of the pull claws are sleeved with snap springs, the rear ends of the pull claws are driven to be clamped at the front end of the front connecting rod by means of elastic force applied by the snap springs, the front ends of the pull claws are driven to be opened simultaneously, the rear end of the handle is fixed with a handle connecting rod which is positioned at the inner side of the front ends of the pull claws, the front end of the pull claw is provided with a front conical part protruding outwards, the inner wall of the rotor is provided with an inner step edge which is positioned at the outer side of the front conical part, when the pull claws slide backwards, the front connecting rod pulls the pull claws backwards to pull the plurality of pull claws, the front conical part is abutted against the inner step edge, so that the front ends of the pull claws are folded and clamped on the cutter handle connecting rod, and meanwhile, pulling force is applied to the cutter handle until the tapered opening is tightly matched with the tapered end part.
Preferably, a plurality of bosses are formed on the front end face of the rotor, the bosses are uniformly distributed along the circumferential direction of the rotor, and the second openings of the plurality of L-shaped air passages are respectively located on the bosses.
Preferably, a flange ring is formed on the outer side of the steel cylinder, a ring spraying plate is fixed at the front end of the steel cylinder, the front bearing assembly is abutted to the inner side of the ring spraying plate, an air ring is arranged on the inner side of the ring spraying plate, the rotor sequentially penetrates through the ring spraying plate and the air ring, gaps are respectively formed between the rotor and the ring spraying plate and between the rotor and the air ring, a waterproof cover is fixed at the front end of the rotor and covers the front side of the air ring, a gap is formed between the waterproof cover and the air ring, front end air passages which are sequentially communicated are formed in the inner wall of the steel cylinder and the ring spraying plate, air ring holes are formed in the air ring and penetrate through the inner side and the outer side of the air ring, lateral air inlets are formed in the flange ring, front end openings of the front end air passages are communicated with the air ring holes, and rear end openings of the front end air passages are communicated with the lateral air inlets, and the airflow injected from the lateral air inlet is blown out through the front end air passage, the air ring hole, the waterproof cover and the gap between the air rings in sequence.
Preferably, two annular gas storage grooves are formed in the outer side wall of the rotor, and the annular gas storage grooves are located on the inner side of the annular spraying plate.
Preferably, the annular gas storage groove is a groove with a triangular cross section.
Preferably, the front bearing assembly includes a front bearing, an inner spacer ring and an outer spacer ring are arranged between the front bearing and the annular nozzle plate, the inner spacer ring is clamped between an inner ring of the front bearing and the rotor, the outer spacer ring is clamped between an outer ring of the front bearing and the annular nozzle plate, the outer spacer ring is "J" -shaped, the inner spacer ring is inverted "J" -shaped, the inner spacer ring and the outer spacer ring are oppositely arranged, a labyrinth gap is formed between the inner spacer ring and the outer spacer ring, and the labyrinth gap is communicated with the gap between the rotor and the annular nozzle plate.
Preferably, the oil cylinder subassembly is including the piston of hydro-cylinder support ring, hydro-cylinder cap and cavity form, the hydro-cylinder support ring connect in the rear end of back of the body lid, the hydro-cylinder is fixed in the rear end of hydro-cylinder support ring, the hydro-cylinder cap is fixed in the rear end of hydro-cylinder, the piston is located in the hydro-cylinder and two sliding connection, both ends pass respectively around the piston the front end of hydro-cylinder with the hydro-cylinder cap, the rotor passes the piston and two sliding connection, the clearance slotted hole has been seted up to the lateral part of rotor, the clearance slotted hole is followed the length direction of rotor extends, be equipped with the pull rod drive block and two sliding connection in the clearance slotted hole, the pull rod drive block with pull rod fixed connection, the pull rod drive block to the outside protrusion of rotor, the inboard of piston is formed with drive step portion, drive step portion is located the rear side of pull rod drive block, the piston is driven to slide back and forth by applying oil pressure to the rear side or the front side of the piston, and when the piston slides forward, thrust is applied to the pull rod driving block through the driving step part, so that the pull rod is driven to slide forward.
Preferably, the rotor is screwed with a limit nut and a rotor nut, the limit nut and the rotor nut are respectively arranged on the front side and the rear side of the back cover, gaps are respectively formed between the back cover and the limit nut and between the back cover and the rotor nut, a jackscrew penetrates through the side part of the limit nut, the jackscrew is in threaded fit with the limit nut, and the end part of the jackscrew is tightly propped against the outer side wall of the rotor.
Preferably, the rear end of pull rod is connected with the cavity form back connecting rod that is used for pouring into the cooling water into, offer the rear end air inlet who is used for pouring into compressed air on the rotor, rear end side hole has been seted up to the lateral part of pull rod, rear end side hole communicate in the inside cavity of pull rod works as when the pull rod slides forward, rear end side hole with rear end air inlet is linked together, the compressed air that rear end air inlet poured into passes through rear end side hole pours into within the pull rod, the cooling water course that is used for pouring into the cooling water is seted up to the steel cylinder lateral wall, the outside cover of steel cylinder is equipped with the water-cooling overcoat, the water-cooling overcoat cover in the cooling water course, be equipped with cooling water inlet and cooling water export on the flange ring, the cooling water course concatenate in between cooling water inlet and the cooling water export.
In the direct-coupled mechanical main shaft disclosed by the utility model, a plurality of L-shaped air passages are arranged in the rotor, when the main shaft looses the cutter, the L-shaped air passages can conduct the air flow in the pull rod to the end surface of the rotor, further clean the side part of the cutter handle and the annular shoulder position, and then combine the center to blow air, thereby greatly improving the cleaning effect on the front end position of the rotor, simultaneously, the pull rod respectively injects compressed air and cooling water when loosening the cutter and clamping the cutter, so that the main shaft can play a role of cooling and cooling the front end of the main shaft from the inside after clamping the cutter, thereby greatly improving the cooling effect of the main shaft, further ensuring the processing precision and performance in the high-speed rotation process of the main shaft, in addition, the utility model discloses a taper end opening is arranged at the front end of the rotor, a taper end part is arranged at the rear end of the taper end part of the cutter handle, and the taper opening, the contact area between the tool handle and the rotor is greatly increased, so that the tool handle and the rotor are matched with each other more closely, the tool handle can bear larger stress, and the high-rigidity processing requirement is better met.
Drawings
Fig. 1 is a partial sectional view of a direct-coupled mechanical spindle of the present invention;
fig. 2 is a partial sectional view of the direct-coupled mechanical spindle of the present invention;
FIG. 3 is a cross-sectional view of the rotor;
fig. 4 is a partial sectional view of the direct-coupled mechanical spindle of the present invention;
fig. 5 is a partial sectional view of the direct-coupled mechanical spindle of the present invention;
FIG. 6 is a cross-sectional view of the rotor, pull rod, pull pawl assembly and tool shank;
FIG. 7 is a perspective view of the pull pawl;
FIG. 8 is a partial side view of the rotor;
FIG. 9 is a front end view of the rotor;
FIG. 10 is a sectional view of the rear end portion of the steel cylinder;
FIG. 11 is a structural view of the back cover;
FIG. 12 is a block diagram of a spacing nut;
FIG. 13 is a sectional view of the front end portion of the steel cylinder;
fig. 14 is an exploded view of the front end structure of the mechanical spindle of the present invention;
fig. 15 is a cross-sectional view of the middle portion of the spindle of the machine of the present invention.
Detailed Description
The present invention will be described in more detail with reference to the accompanying drawings and examples.
The utility model discloses a direct-coupled mechanical spindle, as shown in a combined drawing 1-15, which 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 bearing assembly 2 and the rear bearing assembly 3 are respectively close to the front end and the rear end of the steel cylinder 1, the front end and the rear end of the rotor 4 respectively pass through the front bearing assembly 2 and the rear bearing assembly 3, the rear end of the steel cylinder 1 is fixed with a back cover 5, the rear end of the back cover 5 is provided with an oil cylinder assembly 6, a hollow pull rod 7 is arranged in the rotor 4 in a penetrating way, the pull rod 7 is internally used for injecting cooling water or compressed air, a disc spring assembly 71 is sleeved outside the pull rod 7, the oil cylinder assembly 6 is used for driving the pull rod 7 to slide forwards to execute a cutter loosening action, the front end of the pull rod 7 is provided with a pull claw assembly 8, the front end of the pull claw assembly 8 is used for connecting a hollow cutter handle 9, the front end of the rotor 4 is provided with a conical opening 40, the rear end of the tool holder 9 is provided with a conical end 90, the outer surface of the conical end 90 is matched with the inner wall of the conical opening 40, an annular shoulder 91 is formed on the outer side of the tool holder 9, the annular shoulder 91 is located at the front end of the conical end 90, a hollow pull rod fixing sleeve 75 is fixed at the front end of the pull rod 7, a plurality of front end side holes 70 uniformly distributed along the circumferential direction are formed in the side portion of the pull rod fixing sleeve 75, a plurality of L-shaped air passages 41 are formed in the rotor 4 and uniformly distributed along the circumferential direction of the rotor 4, a first opening of each L-shaped air passage 41 faces the pull rod 7, the first openings of the L-shaped air passages 41 correspond to the front end side holes 70 one to one, and a second opening of each L-shaped air passage 41 faces the rear end face of the annular shoulder 91, when the mechanical spindle performs a tool clamping action, cooling water is injected into the pull rod 7, the disc spring assembly 71 drives the pull rod 7 to slide backwards, the front end side hole 70 is staggered with the first opening of the L-shaped air channel 41, the tapered opening 40 is tightly matched with the tapered end 90, and a tool mounted at the front end of the tool holder 9 is cooled by the cooling water inside the tool holder 9; when the mechanical spindle performs a tool loosening action, compressed air is injected into the pull rod 7, the pull rod 7 is driven to slide forwards by the cylinder assembly 6, the front end side holes 70 are aligned with the first openings of the L-shaped air passages 41 one by one and communicated with each other, and air flow in the pull rod 7 is blown out through the pull claw assembly 8 and the gap between the tapered opening 40 and the tapered end portion 90 in sequence and then blown out through the front end side holes 70 and the L-shaped air passages 41 to the front end of the rotor 4.
In the above structure, a plurality of L-shaped air passages 41 are arranged in the rotor 4, the L-shaped air passages 41 can conduct the air flow in the pull rod 7 to the end face of the rotor 4 when the spindle loosens the cutter, so as to clean the side part of the cutter handle 9 and the annular shoulder 91, and then combine the center to blow air, thereby greatly improving the cleaning effect on the front end of the rotor 4, and simultaneously, the pull rod 7 respectively injects compressed air and cooling water when loosening the cutter and clamping the cutter, so that the spindle can play a role of cooling and cooling the front end of the spindle from the inside after clamping the cutter, thereby greatly improving the cooling effect of the spindle, and further ensuring the processing precision and performance in the high-speed rotation process of the spindle, in addition, the utility model discloses a taper opening 40 is arranged at the front end of the rotor 4, a taper end 90 is arranged at the rear end of the cutter handle 9, and the taper opening 40 is matched with the taper end 90 when clamping the cutter, the contact area between the cutter handle 9 and the rotor 4 is greatly increased, so that the cutter handle 9 and the rotor 4 are matched with each other more closely, the cutter handle 9 can bear larger stress, and the processing requirement of high rigidity is better met.
In this embodiment, the pull claw assembly 8 includes a hollow front connecting rod 80 and a plurality of pull claws 81, a rear end of the front connecting rod 80 is screwed and fixed in a front end opening of the pull rod 7, rear ends of the plurality of pull claws 81 surround a front end of the front connecting rod 80, rear ends of the plurality of pull claws 81 are sleeved with a snap spring, a rear end of the plurality of pull claws 81 is driven to be clamped at a front end of the front connecting rod 80 by an elastic force applied by the snap spring, and simultaneously a front end of the plurality of pull claws 81 is driven to be opened, a handle connecting rod 92 is fixed at a rear end of the handle 9, the handle connecting rod 92 is located inside a front end of the plurality of pull claws 81, a front tapered portion 82 protruding outward is formed at a front end of the pull claw 81, an inner step edge 42 is formed on an inner wall of the rotor 4, the inner step edge 42 is located outside the front tapered portion 82, when the pull claws 81 slide backward, the front connecting rod 80 pulls the plurality of pull claws 81 backward, the front tapered portion 82 abuts against the inner step edge 42 to allow the front ends of the pull claws 81 to close and clamp on the handle link 92, and simultaneously apply a pulling force to the handle 9 until the tapered opening 40 is tightly fitted with the tapered end portion 90.
In the structure, the elastic force applied by the clamp spring can assist in driving the front ends of the pull claws 81 to open when the tool is released, so that the pull claws are reliably separated from the tool holder connecting rod 92, and the tool holder can be taken and placed quickly and accurately in the tool unloading and changing process.
In this embodiment, a plurality of bosses 43 are formed on the front end surface of the rotor 4, the plurality of bosses 43 are uniformly distributed along the circumferential direction of the rotor 4, and the second openings of the plurality of L-shaped air passages 41 are respectively located on the plurality of bosses 43. The plurality of bosses 43 can be brought into contact with the annular shoulder 91 more favorably, and dust, water, and the like can be prevented from being hidden between the adjacent bosses 43, thereby improving the cleaning ability.
As a preferable mode, a flange ring 10 is formed on the outer side of the steel cylinder 1, a ring spray plate 11 is fixed at the front end of the steel cylinder 1, the front bearing assembly 2 abuts against the inner side of the ring spray plate 11, an air ring 12 is arranged on the inner side of the ring spray plate 11, the rotor 4 sequentially penetrates through the ring spray plate 11 and the air ring 12, gaps are respectively formed between the rotor 4 and the ring spray plate 11 and the air ring 12, a waterproof cover 13 is fixed at the front end of the rotor 4, the waterproof cover 13 covers the front side of the air ring 12, a gap is formed between the front side and the air ring 12, front end air passages 14 sequentially communicated are formed on the inner wall of the steel cylinder 1 and the ring spray plate 11, an air ring hole 120 is formed in the air ring 12, the air ring hole 120 penetrates through the inner side and the outer side of the air ring 12, a lateral air inlet 15 is formed on the flange ring 10, a front end opening of the front end air passage 14 is communicated with the air ring hole 120, the rear end opening of the front end air passage 14 is communicated with the lateral air inlet 15, and the airflow injected from the lateral air inlet 15 is blown out through the front end air passage 14, the air ring hole 120 and the gap between the waterproof cover 13 and the air ring 12 in sequence. Through the structure, the air curtain can be formed at the front end of the main shaft, and the cleaning of the processing area of the cutter is facilitated in the processing process.
In order to prevent dust, water and the like from being reversely sucked into the spindle, in this embodiment, two air storage grooves are preferably provided, specifically, two annular air storage grooves 16 are provided on the outer side wall of the rotor 4, and the annular air storage grooves 16 are located on the inner side of the annular spraying plate 11.
In order to better perform the gas storage function, in the present embodiment, the annular gas storage groove 16 is a groove with a triangular cross section.
In order to improve the air seal effect, a labyrinth gap having an air storage function is further disposed at a front end of the front bearing assembly 2, specifically, the front bearing assembly 2 includes a front bearing 20, an inner partition ring 21 and an outer partition ring 22 are disposed between the front bearing 20 and the annular nozzle plate 11, the inner partition ring 21 is sandwiched between an inner ring of the front bearing 20 and the rotor 4, the outer partition ring 22 is sandwiched between an outer ring of the front bearing 20 and the annular nozzle plate 11, the outer partition ring 22 is "J" -shaped, the inner partition ring 21 is inverted "J" -shaped, the inner partition ring 21 and the outer partition ring 22 are disposed opposite to each other, a labyrinth gap 23 is formed between the inner partition ring 21 and the outer partition ring 22, and the gap between the rotor 4 and the annular nozzle plate 11 is communicated with the labyrinth gap 23.
Regarding the specific structure of the oil-light assembly 6, in this embodiment, the oil cylinder assembly 6 includes an oil cylinder support ring 60, an oil cylinder 61, an oil cylinder cover 62 and a hollow piston 63, the oil cylinder support ring 60 is connected to the rear end of the back cover 5, the oil cylinder 61 is fixed to the rear end of the oil cylinder support ring 60, the oil cylinder cover 62 is fixed to the rear end of the oil cylinder 61, the piston 63 is disposed in the oil cylinder 61 and slidably connected to the oil cylinder cover 61, the front end and the rear end of the piston 63 respectively pass through the front end of the oil cylinder 61 and the oil cylinder cover 62, the rotor 4 passes through the piston 63 and slidably connected to the two, a clearance slot 44 is formed in the side of the rotor 4, the clearance slot 44 extends along the length direction of the rotor 4, a pull rod driving block 45 is disposed in the clearance slot 44 and slidably connected to the two, the pull rod driving block 45 is fixedly connected to the pull rod, the pull rod driving block 45 protrudes to the outside of the rotor 4, a driving step portion 630 is formed on the inner side of the piston 63, the driving step portion 630 is located on the rear side of the pull rod driving block 45, the piston 63 is driven to slide back and forth by applying oil pressure to the rear side or the front side of the piston 63, and when the piston 63 slides forward, thrust is applied to the pull rod driving block 45 through the driving step portion 630, and the pull rod 7 is driven to slide forward.
Preferably, the rotor 4 is screwed with a limit nut 46 and a rotor nut 47, the limit nut 46 and the rotor nut 47 are respectively disposed on the front side and the rear side of the back cover 5, a gap is respectively formed between the back cover 5 and the limit nut 46 and the rotor nut 47, a jackscrew 460 is inserted into a side portion of the limit nut 46, the jackscrew 460 is in threaded fit with the limit nut 46, and an end portion of the jackscrew 460 abuts against an outer side wall of the rotor 4. The limiting nut 46 and the rotor nut 47 can be respectively abutted against the back cover 5 when the cutter is loosened and clamped, so that large stress is prevented from being generated between the rotor 4 and the back cover 5, and the functions of floating cutter loosening and floating cutter clamping are well realized.
In the working process, the front end of the spindle generates a large amount of heat, and therefore, the embodiment has a water cooling effect on the front end of the spindle, specifically, the rear end of the pull rod 7 is connected with a hollow rear connecting rod 74 for injecting cooling water, the rotor 4 is provided with a rear end airflow inlet 48 for injecting compressed air, the side portion of the pull rod 7 is provided with a rear end side hole 73, the rear end side hole 73 is communicated with an internal cavity of the pull rod 7, when the pull rod 7 slides forwards, the rear end side hole 73 is communicated with the rear end airflow inlet 48, the compressed air injected from the rear end airflow inlet 48 is injected into the pull rod 7 through the rear end side hole 73, the outer side wall of the steel cylinder 1 is provided with a cooling water channel 18 for injecting cooling water, the outer side of the steel cylinder 1 is sleeved with a water cooling jacket, and the water cooling jacket covers the cooling water channel 18, the flange ring 10 is provided with a cooling water inlet 180 and a cooling water outlet 181, and the cooling water channel 18 is connected in series between the cooling water inlet 180 and the cooling water outlet 181.
In addition, the associated mode mechanical spindle that this embodiment provided, leading bearing assembly 2, back bearing assembly 3 and rotor 4 all set up in steel cylinder 1, and it adopts the associated mode mounting, need not to set up front bearing seat and back bearing seat in addition for the overall structure of spindle is compacter, and reliability and stability are better, help satisfying high accuracy, high rigid processing requirement.
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 (10)
1. A direct-coupled mechanical spindle is characterized by comprising a steel cylinder, wherein a front bearing assembly, a rear bearing assembly and a rotor are arranged in the steel cylinder, the front bearing assembly and the rear bearing assembly are respectively close to the front end and the rear end of the steel cylinder, the front end and the rear end of the rotor respectively penetrate through the front bearing assembly and the rear bearing assembly, a back cover is fixed at the rear end of the steel cylinder, an oil cylinder assembly is arranged at the rear end of the back cover, a hollow pull rod penetrates through the rotor, cooling water or compressed air is injected into the pull rod, a disc spring assembly is sleeved on the outer side of the pull rod, the oil cylinder assembly is used for driving the pull rod to slide forwards to perform a cutter loosening action, a pull claw assembly is arranged at the front end of the pull rod, the front end of the pull claw assembly is used for connecting with a hollow conical cutter handle, an opening is formed at the front end of the rotor, and a conical end of the cutter, the outer surface of the conical end part is matched with the inner wall of the conical opening, an annular shoulder is formed on the outer side of the cutter handle and located at the front end of the conical end part, a hollow pull rod fixing sleeve is fixed at the front end of the pull rod, a plurality of front end side holes which are uniformly distributed along the circumferential direction are formed in the side part of the pull rod fixing sleeve, a plurality of L-shaped air passages are formed in the rotor and uniformly distributed along the circumferential direction of the rotor, the first openings of the L-shaped air passages face the pull rod, the first openings of the L-shaped air passages correspond to the front end side holes one by one, the second openings of the L-shaped air passages face the rear end face of the annular shoulder, when the mechanical spindle performs a cutter clamping action, cooling water is injected into the pull rod, the pull rod is driven to slide backwards by the disc spring assembly, and the front end side holes are staggered with the first openings of the L-shaped air passages, the conical opening is tightly matched with the conical end part, and a cutter arranged at the front end of the cutter handle is cooled by cooling water on the inner side of the cutter handle; when machinery main shaft carries out the knife-loosening action, to inject compressed air into in the pull rod, borrow by the hydro-cylinder subassembly orders the pull rod is slided forward, the front end side opening with the first opening one-to-one of L shape air flue communicates each other, the air current in the pull rod is in proper order via draw claw subassembly and the cone opening with the clearance between the cone tip blows out, again by the front end side opening with L shape air flue to the front end of rotor blows out.
2. The direct-coupled mechanical spindle of claim 1, wherein the pulling claw assembly includes a hollow front connecting rod and a plurality of pulling claws, a rear end of the front connecting rod is screwed and fixed in a front opening of the pulling rod, rear ends of the pulling claws surround a front end of the front connecting rod, a snap spring is sleeved at a rear end of the pulling claws, the snap spring urges the rear ends of the pulling claws to be clamped at a front end of the front connecting rod and urges the front ends of the pulling claws to be opened, a handle connecting rod is fixed at a rear end of the handle, the handle connecting rod is located inside the front ends of the pulling claws, a front tapered portion protruding outward is formed at the front end of the pulling claw, an inner step edge is formed on an inner wall of the rotor, the inner step edge is located outside the front tapered portion, and when the pulling claws slide backward, the front connecting rod pulls the pulling claws backward, the front taper part is abutted against the inner step edge so as to enable the front ends of the pull claws to be folded and clamped on the cutter handle connecting rod, and meanwhile, pulling force is applied to the cutter handle until the taper opening is tightly matched with the taper end part.
3. The direct-coupled mechanical spindle of claim 1, wherein the front end surface of the rotor is formed with a plurality of bosses, the plurality of bosses are uniformly distributed along the circumferential direction of the rotor, and the second openings of the plurality of L-shaped air passages are respectively located on the plurality of bosses.
4. The direct-coupled mechanical spindle of claim 1, wherein a flange ring is formed on an outer side of the steel cylinder, a ring spray plate is fixed at a front end of the steel cylinder, the front bearing assembly abuts against an inner side of the ring spray plate, an air ring is arranged on an inner side of the ring spray plate, the rotor sequentially penetrates through the ring spray plate and the air ring, gaps are respectively formed between the rotor and the ring spray plate and between the rotor and the air ring, a waterproof cover is fixed at a front end of the rotor, covers the front side of the air ring, a gap is formed between the waterproof cover and the air ring, front end air passages sequentially communicated are formed in an inner wall of the steel cylinder and the ring spray plate, air ring holes are formed in the air ring, the air ring holes penetrate through inner and outer sides of the air ring, a lateral air inlet is formed in the flange ring, and a front end opening of the front end air passage is communicated with the air ring holes, the rear end opening of the front end air passage is communicated with the lateral air inlet, and air flow injected by the lateral air inlet is blown out through the front end air passage, the air ring hole, the waterproof cover and gaps among the air rings in sequence.
5. The direct-coupled mechanical spindle of claim 4, wherein two annular air storage grooves are formed in the outer side wall of the rotor, and the annular air storage grooves are located on the inner side of the annular jet plate.
6. The direct-coupled mechanical spindle of claim 5, wherein the annular air reservoir is a groove with a triangular cross section.
7. The direct-coupled mechanical spindle of claim 4, wherein the front bearing assembly includes a front bearing, an inner spacer ring and an outer spacer ring are disposed between the front bearing and the annular nozzle plate, the inner spacer ring is sandwiched between an inner ring of the front bearing and the rotor, the outer spacer ring is sandwiched between an outer ring of the front bearing and the annular nozzle plate, the outer spacer ring is "J" -shaped, the inner spacer ring is inverted "J" -shaped, the inner spacer ring and the outer spacer ring are disposed opposite to each other, a labyrinth gap is formed therebetween, and the gap between the rotor and the annular nozzle plate is communicated with the labyrinth gap.
8. The direct-coupled mechanical spindle of claim 1, wherein the cylinder assembly includes a cylinder support ring, a cylinder cover, and a hollow piston, the cylinder support ring is connected to the rear end of the back cover, the cylinder is fixed to the rear end of the cylinder support ring, the cylinder cover is fixed to the rear end of the cylinder, the piston is disposed in the cylinder and slidably connected to the cylinder, the front and rear ends of the piston respectively penetrate the front end of the cylinder and the cylinder cover, the rotor penetrates the piston and slidably connected to the piston, a clearance slot is formed in the side portion of the rotor, the clearance slot extends along the length direction of the rotor, a pull rod driving block is disposed in the clearance slot and slidably connected to the pull rod driving block, the pull rod driving block is fixedly connected to the pull rod, and protrudes toward the outside of the rotor, the inner side of the piston is provided with a driving step part, the driving step part is positioned at the rear side of the pull rod driving block, the piston is driven to slide back and forth by applying oil pressure to the rear side or the front side of the piston, and when the piston slides forwards, thrust is applied to the pull rod driving block by the driving step part, and then the pull rod is driven to slide forwards.
9. The direct-coupled mechanical spindle according to claim 1, wherein a limit nut and a rotor nut are screwed on the rotor, the limit nut and the rotor nut are respectively disposed on the front side and the rear side of the back cover, a gap is respectively formed between the back cover and the limit nut and between the back cover and the rotor nut, a jackscrew is inserted into a side portion of the limit nut, the jackscrew is in threaded fit with the limit nut, and an end portion of the jackscrew abuts against an outer side wall of the rotor.
10. The direct-coupled mechanical main shaft of claim 4, wherein a hollow rear connecting rod for injecting cooling water is connected to the rear end of the pull rod, the rotor is provided with a rear end airflow inlet for injecting compressed air, the side part of the pull rod is provided with a rear end side hole which is communicated with the inner cavity of the pull rod, when the pull rod slides forwards, the rear end side hole is communicated with the rear end airflow inlet, compressed air injected from the rear end airflow inlet is injected into the pull rod through the rear end side hole, the outer side wall of the steel cylinder is provided with a cooling water channel for injecting cooling water, the outer side of the steel cylinder is sleeved with a water-cooling jacket, the water-cooling jacket covers in the cooling water course, be equipped with cooling water inlet and cooling water outlet on the flange ring, the cooling water course concatenates between cooling water inlet and the cooling water outlet.
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| CN201922183298.5U CN211360671U (en) | 2019-12-08 | 2019-12-08 | Direct-coupled mechanical main shaft |
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| CN201922183298.5U CN211360671U (en) | 2019-12-08 | 2019-12-08 | Direct-coupled mechanical main shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110899733A (en) * | 2019-12-08 | 2020-03-24 | 深圳市爱贝科精密机械有限公司 | Direct-coupled mechanical main shaft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899733A (en) * | 2019-12-08 | 2020-03-24 | 深圳市爱贝科精密机械有限公司 | Direct-coupled mechanical main shaft |
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Address after: 518111 1st and 2nd floors, building A6, silicon valley power intelligent terminal Industrial Park, No.20, Dafu Industrial Zone, Aobei community, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen aibeike Precision Industry Co.,Ltd. Address before: 518111 2nd floor, building A6, silicon valley power intelligent terminal Industrial Park, 20 Dafu Industrial Zone, Aobei community, Guanlan street, Longhua New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN ABIG PRECISION MACHINERY Co.,Ltd. |