CN211638334U - Processing center electric spindle with vacuum locking loose broach mechanism - Google Patents
Processing center electric spindle with vacuum locking loose broach mechanism Download PDFInfo
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- CN211638334U CN211638334U CN201922395186.6U CN201922395186U CN211638334U CN 211638334 U CN211638334 U CN 211638334U CN 201922395186 U CN201922395186 U CN 201922395186U CN 211638334 U CN211638334 U CN 211638334U
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Abstract
The utility model relates to a processing center electricity main shaft with vacuum shutting broach mechanism, which comprises a main shaft, handle of a knife and broach mechanism loose, broach mechanism loose is including setting up center channel and the piston cylinder chamber in the main shaft, be equipped with the pine sword gas pocket in the handle of a knife, be equipped with the spring in the pine sword gas pocket, be equipped with the locking hole on the outside main shaft of pine sword gas pocket, the handle of a knife lockpin, be equipped with locking piston in the piston cylinder chamber, pine sword gas pocket intercommunication center channel, the main shaft rear end is fixed with the binary channels circulator, be equipped with interface one and interface two on the binary channels circulator, interface one is connected valve three and valve four, valve four is connected with the vacuum pump, interface two is connected with valve two and valve one, valve two, high pressurized air source is connected to valve three, center channel front end and the piston cylinder chamber. The utility model discloses have vacuum shutting pine broach mechanism, convenient automatic change cutter, and the cutter hookup is reliable, and the rigidity is good, and simple structure is practical, and is difficult for breaking down.
Description
Technical Field
The utility model relates to a machining center electricity main shaft with vacuum shutting pine broach mechanism belongs to lathe technical field.
Background
The electric main shaft of the machining center is a core functional part of a machine tool of the machining center, the loosening broach mechanism is a tool clamping and loosening mechanism of the main shaft, the existing loosening broach mechanism consists of a pulling claw, a pull rod, a disc spring and a broach cylinder, the structure is complex, faults are easy to occur, and the spring and the pulling claw are easy to damage, so that a new electric main shaft with the loosening broach mechanism is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a processing center electricity main shaft with vacuum shutting pine broach mechanism, the structure of pine broach mechanism is complicated in solving present electricity main shaft, easily breaks down, and the spring and draw the claw very easily damage the problem.
The utility model relates to a processing center electric spindle with vacuum locking broach loosing mechanism, which comprises a spindle and a handle, wherein the inside of the spindle is provided with the broach loosing mechanism, the broach loosing mechanism comprises a central channel and a piston cylinder cavity arranged in the spindle, the handle is arranged at the front end of the spindle, a broach loosing air hole is arranged in the handle, a spring is arranged in the broach loosing air hole, the broach loosing air hole is a stepped hole, the spring is supported at the stepped hole, the spindle is provided with a locking hole outside the broach loosing air hole, a handle lockpin is arranged in the locking hole, a locking piston is arranged in the piston cylinder cavity, the lower end of the locking piston is fixed with a piston rod for pushing the handle lockpin to compress the spring to enter the broach loosing air hole, the broach air hole is communicated with the central channel, the rear end of the spindle is fixed with a dual-channel rotator, the dual-channel rotator is provided with a first, the valve III is connected with a high-pressure air source, the valve IV is connected with a vacuum pump, the connector II is connected with a valve II and a valve I, the valve II is connected with the high-pressure air source, and the front end of the central channel is communicated with a piston cylinder cavity at the front end of the locking piston.
Preferably, the front end of the piston rod and the outer end of the handle lock pin are provided with mutually matched pushing inclined planes, and the inner end of the handle lock pin is provided with a taper of 12: 1.
Preferably, a piston plug with a center hole is arranged in a piston cylinder cavity at the rear end of the locking piston to limit the piston and prevent the piston from freely moving towards the rear end.
Preferably, the main shaft comprises a seat shell, a front end cover, a main shaft rotor, a front bearing sleeve, a rear end cover and a main shaft stator, the loosening broach mechanism is arranged on the main shaft rotor, a front bearing inner tile and a rear bearing inner tile are respectively arranged in the front bearing sleeve and the rear bearing sleeve, bearing water cavities are arranged on inner hole walls of the front bearing inner tile and the rear bearing inner tile, bearing air cavities are arranged on two sides of each bearing water cavity, air pipelines communicated with the bearing air cavities are respectively arranged in the seat shell, the front bearing sleeve, the rear bearing sleeve, the front bearing inner tile and the rear bearing inner tile, and water inlet pipelines communicated with the bearing water cavities are respectively arranged in the seat shell, the front bearing sleeve, the rear bearing sleeve, the front bearing inner tile and the rear bearing inner tile. The electric main shaft bearing adopts an air and water medium composite bearing, increases air pressure and reduces water pressure at high speed, so that the air bearing plays a role, the main shaft runs at high speed and is suitable for high-speed finish machining, reduces air pressure and increases water pressure at low speed, the water bearing plays a main role, and the electric main shaft bearing has good low-speed rigidity and is suitable for low-speed large cutting.
Preferably, a cooling water cavity is arranged on the outer side of the main shaft stator, a cooling water inlet channel communicated with the cooling water cavity is arranged on the seat shell to cool the main shaft stator, a cooling water inlet, a cooling water outlet, a bearing water inlet, a bearing water outlet, a bearing air inlet and a bearing air outlet are arranged on the rear end cover, and a silencer is arranged at the bearing air outlet to reduce noise.
Preferably, a front bearing end surface water cavity is arranged on the end surface of the front bearing inner tile and connected with the water inlet pipeline, a front bearing end surface air cavity is arranged on the outer side of the front bearing end surface water cavity and connected with the air pipeline. Make the better suspension of main shaft rotor when rotating, better reduction friction, and the water cavity sets up in the air cavity outside, prevents that water leakage.
Preferably, a thrust bearing sleeve is arranged between the front end cover and the spindle stator, a thrust bearing bush is arranged in the thrust bearing sleeve, a thrust bearing water cavity is arranged on the inner end face of the thrust bearing bush, the thrust bearing water cavity is connected with a water inlet pipeline, a thrust bearing air cavity is arranged on the outer side of the thrust bearing water cavity, and the thrust bearing air cavity is connected with an air pipeline. Make the better suspension of main shaft rotor when rotating, better reduction friction, and the water cavity sets up in the air cavity outside, prevents that water leakage.
Preferably, an adjusting ring is arranged between the front end cover and the front bearing sleeve, so that the position of the front end bearing sleeve is conveniently adjusted.
Preferably, a restrictor is provided in the air conduit.
The utility model discloses, following beneficial effect has:
the electric spindle bearing adopts an air and water medium composite bearing, increases air pressure at high speed, reduces water pressure, enables the air bearing to play a role, enables the spindle to operate at high speed, adapts to high-speed finish machining, reduces air pressure at low speed, increases water pressure, plays a main role in the water bearing, has good low-speed rigidity, and adapts to low-speed large cutting.
Drawings
FIG. 1 is a schematic view of the structure principle of the present invention;
FIG. 2 is a schematic view of the installation structure of the present invention;
FIG. 3 is a schematic right side view of the rear end cap of FIG. 2;
in the figure: 1. a handle lock pin, 2, a cutter loosening air hole, 3, a spindle rotor, 4, a piston cylinder cavity, 5, a central channel, 6, a double-channel rotator, 7, a connector II, 8, a connector I, 9, a handle, 10, a high-pressure air source, 11, a vacuum pump, 12, a piston plug, 13, a locking piston, 14, a spring, 15, a front end cover, 16, a thrust bearing water cavity, 17, a thrust bearing air cavity, 18, a front bearing end face air cavity, 19, a front bearing end face water cavity, 20, a bearing air cavity, 21, a cooling water inlet, 22, a rear end cover, 23, a bearing air inlet, 24, a rear bearing inner tile, 25, a rear bearing sleeve, 26, a throttle valve, 27, an air pipeline, 28, a spindle stator, 29, a seat shell, 30, a front bearing sleeve, 31, a bearing water cavity, 32, a water inlet pipeline, 33, a front bearing inner tile, 34, an adjusting ring, 35, a thrust bearing tile, 36, a silencer, 37, 38. bearing water outlet, 39, bearing water inlet.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1 to 3, the utility model relates to a processing center electrical spindle with vacuum locking broach loosing mechanism, which comprises a spindle and a handle 9, wherein the broach loosing mechanism is arranged in the spindle, the broach mechanism comprises a central channel 5 and a piston cylinder cavity 4 which are arranged in the spindle, the handle 9 is arranged at the front end of the spindle, a broach air hole 2 is arranged in the handle 9, a spring 14 is arranged in the broach air hole 2, a locking hole is arranged on the spindle outside the broach air hole 2, a handle lock pin 1 is arranged in the locking hole, a locking piston 13 is arranged in the piston cylinder cavity 4, a piston rod for pushing the handle lock pin 1 to compress the spring 14 to enter the broach air hole 2 is fixed at the lower end of the locking piston 13, the broach air hole 2 is communicated with the central channel 5, a double-channel rotator 6 is fixed at the rear end of the spindle, a first connector 8 and a second connector 7 which are respectively connected with the, the first connector 8 is connected with a third valve and a fourth valve, the third valve is connected with a high-pressure air source 10, the fourth valve is connected with a vacuum pump 11, the second connector 7 is connected with a second valve and a first valve, the second valve is connected with the high-pressure air source 10, and the front end of the central channel 5 is communicated with the piston cylinder cavity 4 at the front end of the locking piston 13.
The front end of the piston rod and the outer end of the knife handle lock pin 1 are both provided with mutually matched pushing inclined planes, and the inner end of the knife handle lock pin 1 is provided with a taper of 12: 1.
A piston plug 12 with a central hole is arranged in the piston cylinder cavity 4 at the rear end of the locking piston 13.
At present, an air floatation electric main shaft or a liquid floatation electric main shaft is commonly used, the air floatation electric main shaft has the characteristics of high speed and high precision, but the rigidity, especially the low-speed rigidity is poor, the electric main shaft of a water liquid supporting bearing medium has good low-speed rigidity and high rotation precision, but a high-speed bearing generates heat, and the high-speed and high-rigidity operation cannot be realized. Therefore, as shown in fig. 2, the spindle includes a housing 29, a front end cover 15, a spindle rotor 3, a front bearing housing 30, a rear bearing housing 25, a rear end cover 22 and a spindle stator 28, the unclamping mechanism is disposed on the spindle rotor 3, a front bearing inner bush 33 and a rear bearing inner bush 24 are respectively disposed in the front bearing housing 30 and the rear bearing housing 25, bearing water cavities 31 are disposed on inner hole walls of the front bearing inner bush 33 and the rear bearing inner bush 24, bearing air cavities 20 are disposed on two sides of the bearing water cavities 31, air ducts 27 communicating with the bearing air cavities 20 are disposed in the housing 29, the front bearing housing 30, the rear bearing housing 25, the front bearing inner bush 33 and the rear bearing inner bush 24, and water inlet ducts 32 communicating with the bearing water cavities 31 are disposed in the housing 29, the front bearing housing 30, the rear bearing housing 25, the front bearing inner bush 33 and the rear bearing inner bush 24.
The outer side of the main shaft stator 28 is provided with a cooling water cavity, the seat shell 29 is provided with a cooling water inlet channel communicated with the cooling water cavity, the rear end cover 22 is provided with a cooling water inlet 21, a cooling water outlet 37, a bearing water inlet 39, a bearing water outlet 38, a bearing air inlet 23 and a bearing air outlet, and the bearing air outlet is provided with a silencer 36.
The end face of the front bearing inner tile 33 is provided with a front bearing end face water cavity 19, the front bearing end face water cavity 19 is connected with the water inlet pipeline 32, the outer side of the front bearing end face water cavity 19 is provided with a front bearing end face air cavity 18, and the front bearing end face air cavity 18 is connected with the air pipeline 27.
A thrust bearing sleeve is arranged between the front end cover 15 and the main shaft stator 28, a thrust bearing bush 35 is arranged in the thrust bearing sleeve, a thrust bearing water cavity 16 is arranged on the inner end face of the thrust bearing bush 35, the thrust bearing water cavity 16 is connected with a water inlet pipeline 32, a thrust bearing air cavity 17 is arranged on the outer side of the thrust bearing water cavity 16, and the thrust bearing air cavity 17 is connected with an air pipeline 27.
An adjusting ring 34 is arranged between the front end cover 15 and the front bearing sleeve 30.
A restrictor 26 is provided in the air conduit 27.
Working principle of electric spindle broach feeding
1. When the main shaft is pulled, the tool shank is placed into an inner hole of the main shaft, the valve IV is opened, air in a central channel of the main shaft is compressed through the vacuum pump and is exhausted out of the cavity, negative pressure is generated in an inner cavity of the main shaft, the taper and the end face of the main shaft are attached tightly, the valve II is opened simultaneously, high-pressure air enters the piston cylinder cavity, the locking piston is pushed to move downwards, the piston rod pushes the locking pin of the pressing tool shank to move inwards, the tool shank is locked by overcoming the elastic force of the spring, the tool shank is fixed, the purpose of tensioning.
2. When the tool is changed, the second valve and the fourth valve are closed, the first valve and the third valve are opened, high-pressure gas of a high-pressure gas source enters a central channel of the main shaft, gas in a piston cylinder cavity is discharged through the first valve, the high-pressure gas and the spring push the tool handle lock pin, the locking piston is loosened, and the tool handle lock pin is ejected out; meanwhile, clean air is injected into the middle channel of the tool shank, the tool shank is blown down, and the spindle can be used for tool changing.
Second, electric main shaft operation working principle
After water enters from the water inlet of the bearing and enters from the air inlet of the bearing, the main shaft rotor floats under the support of air or water and is in a suspension state. The motor drives the main shaft rotor to rotate at a high speed to drive the grinding wheel or the cutter to process parts.
This patent has added water cavity and air cavity on footstep bearing, front and back bearing, and when low rotational speed, the water cavity plays the support bearing effect, and the air cavity plays sealed effect, prevents that water from oozing. When the electric spindle runs at low speed, the rigidity is good, and the electric spindle is suitable for low-speed large-cutting machining. When high rotational speed, water supply pressure reduces or does not supply water, and air feed pressure increases, and the main shaft leans on the air bearing to float, can realize high rotational speed, avoids the water bearing condition of generating heat when high rotational speed, is applicable to high rotational speed finish machining.
To sum up, the utility model discloses have vacuum shutting pine broach mechanism, convenient automatic change cutter, and the cutter hookup is reliable, and the rigidity is good, simple structure is practical, and is difficult for breaking down, and in addition, electric main shaft bearing adopts air and aqueous medium composite bearing, increases air pressure when high-speed, reduces the pressure of water, makes air bearing play a role, and the high-speed operation of main shaft adapts to high-speed finish machining, reduces air pressure when low-speed, increases water pressure, and water bearing plays the primary action, and low-speed rigidity is good, adapts to the big cutting of low-speed.
In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Claims (9)
1. The utility model provides a processing center electricity main shaft with vacuum shutting pine broach mechanism, includes main shaft and handle of a knife (9), is equipped with pine broach mechanism in the main shaft, its characterized in that: the broaching tool loosening mechanism comprises a central channel (5) and a piston cylinder cavity (4) which are arranged in a main shaft, a tool shank (9) is arranged at the front end of the main shaft, a tool loosening air hole (2) is arranged in the tool shank (9), a spring (14) is arranged in the tool loosening air hole (2), a locking hole is arranged on the main shaft at the outer side of the tool loosening air hole (2), a tool shank lock pin (1) is arranged in the locking hole, a locking piston (13) is arranged in the piston cylinder cavity (4), a piston rod for pushing the tool shank lock pin (1) to compress the spring (14) to enter the tool loosening air hole (2) is fixed at the lower end of the locking piston (13), the tool loosening air hole (2) is communicated with the central channel (5), a double-channel rotator (6) is fixed at the rear end of the main shaft, a first connector (8) and a second connector (7) which are respectively connected with the central channel (5, the valve III is connected with a high-pressure air source (10), the valve IV is connected with a vacuum pump (11), the connector II (7) is connected with a valve II and a valve I, the valve II is connected with the high-pressure air source (10), and the front end of the central channel (5) is communicated with a piston cylinder cavity (4) at the front end of the locking piston (13).
2. The central processing spindle with vacuum blocked loose broach mechanism of claim 1, characterized in that: the front end of the piston rod and the outer end of the knife handle lock pin (1) are provided with mutually matched pushing inclined planes, and the inner end of the knife handle lock pin (1) is provided with a taper of 12: 1.
3. The central processing spindle with vacuum blocked loose broach mechanism of claim 1, characterized in that: a piston plug (12) with a central hole is arranged in the piston cylinder cavity (4) at the rear end of the locking piston (13).
4. The central processing spindle with vacuum blocked loose broach mechanism of claim 1, characterized in that: the main shaft comprises a seat shell (29), a front end cover (15), a main shaft rotor (3), a front bearing sleeve (30), a rear bearing sleeve (25), a rear end cover (22) and a main shaft stator (28), the loosening broach mechanism is arranged on a main shaft rotor (3), a front bearing inner tile (33) and a rear bearing inner tile (24) are respectively arranged in a front bearing sleeve (30) and a rear bearing sleeve (25), bearing water cavities (31) are arranged on the inner hole walls of the front bearing inner tile (33) and the rear bearing inner tile (24), bearing air cavities (20) are arranged on two sides of each bearing water cavity (31), air pipelines (27) communicated with the bearing air cavities (20) are respectively arranged in a seat shell (29), the front bearing sleeve (30), the rear bearing sleeve (25), the front bearing inner tile (33) and the rear bearing inner tile (24), and water inlet pipelines (32) communicated with the bearing water cavity (31) are respectively arranged in the seat shell (29), the front bearing sleeve (30), the rear bearing sleeve (25), the front bearing inner tile (33) and the rear bearing inner tile (24).
5. The central processing spindle with vacuum blocked loose broach mechanism of claim 4, characterized in that: the outer side of the main shaft stator (28) is provided with a cooling water cavity, the seat shell (29) is provided with a cooling water inlet channel communicated with the cooling water cavity, the rear end cover (22) is provided with a cooling water inlet (21), a cooling water outlet (37), a bearing water inlet (39), a bearing water outlet (38), a bearing air inlet (23) and a bearing air outlet, and the bearing air outlet is provided with a silencer (36).
6. The central processing spindle with vacuum blocked loose broach mechanism of claim 4, characterized in that: the end face of the front bearing inner tile (33) is provided with a front bearing end face water cavity (19), the front bearing end face water cavity (19) is connected with a water inlet pipeline (32), the outer side of the front bearing end face water cavity (19) is provided with a front bearing end face air cavity (18), and the front bearing end face air cavity (18) is connected with an air pipeline (27).
7. The central processing spindle with vacuum blocked loose broach mechanism of claim 4, characterized in that: a thrust bearing sleeve is arranged between the front end cover (15) and the main shaft stator (28), a thrust bearing bush (35) is arranged in the thrust bearing sleeve, a thrust bearing water cavity (16) is arranged on the inner end face of the thrust bearing bush (35), the thrust bearing water cavity (16) is connected with a water inlet pipeline (32), a thrust bearing air cavity (17) is arranged on the outer side of the thrust bearing water cavity (16), and the thrust bearing air cavity (17) is connected with an air pipeline (27).
8. The central processing spindle with vacuum blocked loose broach mechanism of claim 4, characterized in that: an adjusting ring (34) is arranged between the front end cover (15) and the front bearing sleeve (30).
9. The central processing spindle with vacuum blocked loose broach mechanism of claim 4, characterized in that: a restrictor (26) is arranged in the air pipeline (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922395186.6U CN211638334U (en) | 2019-12-27 | 2019-12-27 | Processing center electric spindle with vacuum locking loose broach mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922395186.6U CN211638334U (en) | 2019-12-27 | 2019-12-27 | Processing center electric spindle with vacuum locking loose broach mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211638334U true CN211638334U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922395186.6U Active CN211638334U (en) | 2019-12-27 | 2019-12-27 | Processing center electric spindle with vacuum locking loose broach mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211638334U (en) |
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2019
- 2019-12-27 CN CN201922395186.6U patent/CN211638334U/en active Active
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