CN209174911U - A kind of direct-connected main shaft assemble mechanism - Google Patents
A kind of direct-connected main shaft assemble mechanism Download PDFInfo
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- CN209174911U CN209174911U CN201822122453.8U CN201822122453U CN209174911U CN 209174911 U CN209174911 U CN 209174911U CN 201822122453 U CN201822122453 U CN 201822122453U CN 209174911 U CN209174911 U CN 209174911U
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Abstract
The utility model discloses a kind of direct-connected main shaft assemble mechanisms, including spindle box, rack sleeve is provided in spindle box, it is fixedly installed direct-connected main shaft in rack sleeve, is provided with first shaft coupling axle sleeve at the top of direct-connected main shaft, is provided with motor cabinet on spindle box, main motor is provided on motor cabinet, connecting plate for electric motor is provided between main motor and motor cabinet, the end sleeve of main motor is equipped with second shaft coupling axle sleeve, and first shaft coupling axle sleeve is engaged with second shaft coupling axle sleeve；The upper plane of spindle box is provided with automatic compensation balance device, the automatic compensation balance device is used for the weight of balancing main shaft case, automatic compensation balance device includes bracket, balance cylinder block and piston rod are provided on bracket, piston rod tail portion is provided with floating junction, and floating junction is connect with the spindle box.The utility model direct-connected main shaft can high-precision, at high speed processing part, keep the precision property of lathe, be capable of the weight of balancing main shaft case well, reduce the abrasion of transmission mechanism ball-screw.
Description
Technical field
The utility model relates to numerical control machining center fields, and in particular to a kind of direct-connected main shaft assemble mechanism.
Background technique
With being constantly progressive for construction and science and technology, China's numerical control machining center industry is just towards high speed, efficient, high-precision side
To development.Piece surface retrofit is more more and more universal, and machined surface roughness requirements also increase therewith, and this requires the speeds of mainshaft
Towards 10000rpm or more high speed development.Currently, direct-connected main shaft structure is chiefly used in High Speed NC Machine Tools, it passes through positive coupling
Directly main motor shaft is connect with main shaft, transmission accuracy and mechanical efficiency all it is higher simultaneously, high revolving speed also improves part and adds
The efficiency and quality of work, therefore use scope is more and more wider.Existing direct-connected main shaft structure is: direct-connected main shaft is fixed with spindle box
Connection, motor cabinet is fixedly connected on spindle box neck, the flange inner hole and boss plane above motor cabinet not only with direct-connected main shaft
There is stringent assembly connection requirement, must also cooperate fixation with main motor, i.e., direct-connected main shaft only be realized by the repair of motor cabinet
It is not overproof with the axle offset amount of main motor shaft.The mechanism is not only high to the required precision of part, outsourcing piece, but also takes when assembly fee
Power, quality cannot be guaranteed, and main shaft accuracy resumption is difficult when maintenance.
And existing direct-connected main shaft is during spindle box moves up and down with transmission mechanism, due to spindle box itself
Weight can cause biggish abrasion to the ball-screw on transmission mechanism, increase the servo motor load of transmission mechanism.Existing skill
It is in art to be not provided with balance system more, or by the way of mechanical balance and hydro-cushion, but all have the defects that certain:
Mechanical balance: setting balance weight is identical as the weight of spindle box, then with chain or steel cable by balance weight and master
Axle box connects, and such method can occupy biggish installation space, also will increase the overall weight of lathe, also increases simultaneously
The total inertia of spindle box, the speed, acceleration and flexibility for moving it are restricted.
Hydro-cushion: the opposite direction along spindle box gravity applies a thrust equal thereto, this thrust is by hydraulic cylinder
It completes, the problems such as such method can generate noise, leakage, vibration and temperature rise, while when spindle box vertically moves speed, accelerates
When spending larger, it is easy to appear hydraulic shock and driving overload, rapid pressure drop is balanced, is not able to satisfy wanting for modern rapid processing
It asks, thus phenomena such as the abrasion of driving member can not be protected.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of direct-connected main shaft assemble mechanisms, overcome the straight of the prior art
Join main shaft present in defect, realize direct-connected main shaft can high-precision, at high speed processing part, keep the complete machine accuracy of lathe
Can, and guarantee vertical movement of the direct-connected main shaft under transmission mechanism driving, it is capable of the weight of balancing main shaft case well, reduces
The abrasion of transmission mechanism ball-screw keeps the precision stability of transmission mechanism ball-screw, reduces the servo electricity of transmission mechanism
Machine load, makes spindle box have dynamic capability of fast response, can and effectively extend the service life of transmission mechanism.
In order to solve the above-mentioned technical problem, the utility model provides a kind of direct-connected main shaft assemble mechanism, including spindle box,
It is provided with rack sleeve in the spindle box, direct-connected main shaft, the direct-connected main shaft top are fixedly installed in the rack sleeve
It is provided with first shaft coupling axle sleeve, motor cabinet is provided on the spindle box, main motor, the master are provided on the motor cabinet
Connecting plate for electric motor is provided between motor and motor cabinet, the main motor is connected by the connecting plate for electric motor and the motor cabinet
It connects, the end sleeve of the main motor is equipped with second shaft coupling axle sleeve, and the first shaft coupling axle sleeve and second shaft coupling axis are socketed
It closes；The upper plane of the spindle box is provided with automatic compensation balance device, and the automatic compensation balance device is used for balancing main shaft
The weight of case, the automatic compensation balance device includes bracket, is provided with balance cylinder block and piston rod on the bracket, described
Piston rod tail portion is provided with floating junction, and the floating junction is connect with the spindle box.
It further comprise the end of the main motor include mandrel in one preferred embodiment of the utility model, described
Two shaft coupling axle sleeves are arranged on the mandrel, and the second shaft coupling axle sleeve and the mandrel are coaxially disposed.
It further comprise that the connecting plate for electric motor is fixed on by the way that bolt is sealed in one preferred embodiment of the utility model
On the main motor, the connecting plate for electric motor and the mandrel are coaxially disposed.
It further comprise that the motor cabinet is arranged outside the rack sleeve in one preferred embodiment of the utility model
Side, the motor cabinet are extended to main motor direction, and the motor cabinet and the direct-connected main shaft being arranged in rack sleeve are coaxial
Setting.
It further comprise being provided between the motor cabinet and the spindle box in one preferred embodiment of the utility model
First positioning pin.
It further comprise being set between the connecting plate for electric motor and the motor cabinet in one preferred embodiment of the utility model
It is equipped with the second positioning pin.
It further comprise that the inner cavity of the balance cylinder block and pressure accumulation steel cylinder connect in one preferred embodiment of the utility model
It is logical.
It further comprise the tie point of the floating junction Yu the spindle box in one preferred embodiment of the utility model
On the center line of the spindle box.
It further comprise that the bracket is fixed on column in one preferred embodiment of the utility model.
The utility model has the beneficial effects that
One is provided with connecting plate for electric motor between motor cabinet and main motor, so that main motor and direct-connected main shaft two axial lines
Between offset be preferably minimized.
In the prior art, direct-connected main shaft is fixedly connected with spindle box, and motor cabinet is fixedly connected on spindle box neck, motor
The flange inner hole and boss plane of seat top and main motor cooperation are fixed；When assembly, matched by the size of motor cabinet flange inner hole
The shovel of plane scrapes correction in conjunction and boss, and the axle offset amount to guarantee direct-connected main shaft and main motor shaft is not overproof.
Compared with the prior art, after increasing connecting plate for electric motor newly, it need to only guarantee connecting plate for electric motor and the main motor respectively
Mandrel coaxial arrangement, motor cabinet be coaxially disposed with the direct-connected main shaft that is arranged in rack sleeve, second shaft coupling axle sleeve with it is described
The coaxial arrangement of main motor mandrel, the offset that can be achieved between main motor and direct-connected main shaft two axial lines are preferably minimized, can be more preferable
Ground high-precision, at high speed processing part, keep the complete machine precision property of lathe.Also, the part of motor cabinet and connecting plate for electric motor
Required precision is moderate, convenient for reducing the scrappage of part while batch production, and it is easy to maintenance, main shaft precision is easily restored.
Secondly, the upper plane of spindle box is provided with automatic compensation balance device, be capable of the own wt of balancing main shaft case,
Reduce the abrasion of transmission mechanism ball-screw.
Traditional mode of production and in the prior art, is not provided with balance system, or by the way of mechanical balance and hydro-cushion more.
Mechanical balance: setting balance weight is identical as the weight of spindle box, then with chain or steel cable by balance weight and master
Axle box connects, and such method can occupy biggish installation space, also will increase the overall weight of lathe, also increases simultaneously
The total inertia of spindle box, the speed, acceleration and flexibility for moving it are restricted.
Hydro-cushion: the opposite direction along spindle box gravity applies a thrust equal thereto, this thrust is by hydraulic cylinder
It completes, the problems such as such method can generate noise, leakage, vibration and temperature rise, while when spindle box vertically moves speed, accelerates
When spending larger, it is easy to appear hydraulic shock and driving overload, rapid pressure drop is balanced, is not able to satisfy wanting for modern rapid processing
It asks, thus phenomena such as the abrasion of driving member can not be protected.
Compared with the prior art, the automatic compensation balance device that the utility model uses, has the advantage that
1, it is not necessarily to dynamical system, to save the energy.
2, the production capacity of machine is improved rapidly, it is noiseless.
3, the quality of lathe is improved, precision amplitude is increased, extends the lathe service life.
4, cost is reduced, it is non-maintaining after installation.
It increases the weight that automatic compensation balance device is capable of balancing main shaft case well newly, reduces transmission mechanism ball-screw
Abrasion, keeps the precision stability of the ball-screw of transmission mechanism, reduces the servo motor load of transmission mechanism, has spindle box
There is dynamic capability of fast response, can and effectively extend the service life of transmission mechanism.
Detailed description of the invention
Fig. 1 is the direct-connected main shaft assemble mechanism diagram of the utility model
Fig. 2 is that the direct-connected main shaft of the utility model and main motor assemble diagram
Figure label explanation: 1, main motor；2, connecting plate for electric motor；3, second shaft coupling axle sleeve；4, first shaft coupling axle sleeve；
5, motor cabinet；6, spindle box；7, direct-connected main shaft；8, floating junction；9, bracket；10, column；11, balance cylinder block；12, first is fixed
Position pin；13, the second positioning pin；14, piston rod；201, connecting plate for electric motor plane；202, connecting plate for electric motor outer circle；501, motor cabinet
Plane；502, motor seat inner hole.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
Referring to Fig.1 shown in -2, an embodiment of the direct-connected main shaft assemble mechanism of the utility model, a kind of direct-connected main shaft assembly
Mechanism is used for vertical machining centre or horizontal Machining centers, including spindle box 6, is provided with rack sleeve in the spindle box 6,
The rack sleeve is circular sleeve, and the rack sleeve is arranged through the spindle box 6, and fixation is set in the rack sleeve
It is equipped with direct-connected main shaft 7,7 flange of direct-connected main shaft is locked together on the spindle box 6 by bolt, 7 top of direct-connected main shaft
It is provided with first shaft coupling axle sleeve 4, motor cabinet 5 is provided on the spindle box 6, the motor cabinet 5 is arranged in the collar bush
Cylinder outside, the motor cabinet 5 are locked together on spindle box 6 by bolt, and main motor 1, the motor are provided on the motor cabinet 5
Seat 5 is extended to 1 direction of main motor, and connecting plate for electric motor 2, the main motor are provided between the main motor 1 and motor cabinet 5
1 is connect by the connecting plate for electric motor 2 with the motor cabinet 5, and the head of the main motor 1 includes mandrel, is covered on the mandrel
Equipped with second shaft coupling axle sleeve 3, the first shaft coupling axle sleeve 4 is engaged with second shaft coupling axle sleeve 3；The spindle box 6 it is upper
Plane is provided with automatic compensation balance device, and the automatic compensation balance device is used for the weight of balancing main shaft case 6, described automatic
Compensation balance device includes bracket 9, and the bracket 9 is fixed at the top of column 10, and to being extended on the outside of column 10,
Balance cylinder block 11 and piston rod 14 are provided on the bracket 9,14 tail portion of piston rod is provided with floating junction 8, described
Floating junction 8 is connect with the spindle box 6.
In order to enable direct-connected main shaft the assemble mechanism preferably high-precision, at high speed processing part of the utility model, institute
It states direct-connected main shaft 7 and the assembly of the main motor 1 includes the following steps:
1, the motor cabinet 5 is coaxially disposed with the direct-connected main shaft 7 being arranged in rack sleeve: amesdial is fixed on first
On shaft coupling axle sleeve 4, the coaxial angle value of the plane jitter values and motor seat inner hole 502 that verify motor cabinet plane 501 is respectively less than
0.005mm。
2, the mandrel of the connecting plate for electric motor 2 and the main motor 1 is coaxially disposed: amesdial is fixed on the main motor
On 1 mandrel, the coaxial angle value of the plane jitter values and connecting plate for electric motor outer circle 202 that verify connecting plate for electric motor plane 201 is small
In 0.005mm.
3, the mandrel of the second shaft coupling axle sleeve 3 and the main motor 1 is coaxially disposed: adjustment second shaft coupling axle sleeve 3
Groove end face at a distance from the end face of mandrel of main motor 1 to design size, amesdial is fixed on connecting plate for electric motor 2, verify
The coaxial angle value of mandrel of the outer circle of second shaft coupling axle sleeve 3 and the main motor 1, by adjusting on second shaft coupling axle sleeve 3
The mode of fastening screw coupling mechanism force guarantees that the concentricity of second shaft coupling axle sleeve 3 and the mandrel is less than 0.005mm.
Specifically, the first positioning pin 12, first positioning pin are provided between the motor cabinet 5 and the spindle box 6
12 are arranged in the two sides of the motor cabinet 5, and first positioning pin 12 works as school through the motor cabinet 5 and the spindle box 6
After the plane jitter values of electrical verification base plane 501 and the coaxial angle value of motor seat inner hole 502 are respectively less than 0.005mm, insertion first
Positioning pin 12 guarantees that the motor cabinet 5 and the position of the spindle box 6 are fixed.
Specifically, the second positioning pin 13 is provided between the connecting plate for electric motor 2 and the motor cabinet 5, described second is fixed
Position pin 13 is arranged in the two sides of the connecting plate for electric motor 2, second positioning pin 13 through the connecting plate for electric motor 2 with it is described
Motor cabinet 5, insertion second positioning pin 13 after the direct-connected main shaft 7 has been assembled with the main motor 1, after guaranteeing assembly
Position is fixed.
In the utility model, the automatic compensation balance device is the working principle using accumulator, controls the balance
Cylinder 11 and piston rod 14 cooperate the rise and fall of transmission mechanism servo motor, the weight of balancing main shaft case 6.
When transmission mechanism drives the machining center spindle box 6 to move downward, 11 inner cavity of balance cylinder block
Oil liquid volume is reduced, and the oil liquid volume in pressure accumulation steel cylinder increases, and the gas in pressure accumulation steel cylinder is compressed, and gas pressure increases, pressure
Power can store, and apply a upward pulling force to the machining center spindle box 6 by piston rod 14, for balancing the processing
The weight of central principal axis case 6 itself, the inertia for preventing transmission mechanism from the machining center spindle box 6 being driven to move downward is excessive,
The abrasion for reducing the ball-screw of transmission mechanism, keeps its precision stability.When transmission mechanism drives the machining center main shaft
When case 6 moves upwards, the oil liquid volume of 11 inner cavity of balance cylinder block increases, and the oil liquid volume in pressure accumulation steel cylinder reduces,
Gas expansion in pressure accumulation steel cylinder, gas release stress energy, and pressure reduces, and apply one to the spindle box 6 by piston rod 14
A downward pressure prevents transmission mechanism from the spindle box 6 being driven to move upwards for balancing the weight of the spindle box 6
Inertia is excessive, lowers the load of transmission mechanism servo motor, reduces the abrasion of the ball-screw of transmission mechanism.
Specifically, the inner cavity of the balance cylinder block 11 is connected to pressure accumulation steel cylinder, and a pressure accumulation steel cylinder is instead of traditional 3-4
A Hydraulic Elements just have preferable counterbalance effect in the balance of spindle box 6 with smaller installation space, only need to be by pressure accumulation steel cylinder
It is fixed in the inner cavity of column 10, saves the occupied area of lathe.
Specifically, the tie point of the floating junction 8 and the spindle box 6 is located on the center line of the spindle box 6, makes
Weight positioned at the spindle box 6 of tie point two sides is consistent, can prevent equilibrant force from deviating during balancing in this way, transmission mechanism
Cause side wear.
Embodiment described above is only preferred embodiments for fully illustrating the utility model, the utility model
Protection scope it is without being limited thereto.Those skilled in the art made equivalent substitute or change on the basis of the utility model
It changes, both is within the protection scope of the present invention.The protection scope of the utility model is subject to claims.
Claims (9)
1. a kind of direct-connected main shaft assemble mechanism, including spindle box, rack sleeve, the rack sleeve are provided in the spindle box
Inside it is fixedly installed direct-connected main shaft, which is characterized in that be provided with first shaft coupling axle sleeve, the main shaft at the top of the direct-connected main shaft
It is provided with motor cabinet on case, main motor is provided on the motor cabinet, motor company is provided between the main motor and motor cabinet
Fishplate bar, the main motor are connect by the connecting plate for electric motor with the motor cabinet, and the end sleeve of the main motor is equipped with second
Shaft coupling axle sleeve, the first shaft coupling axle sleeve are engaged with second shaft coupling axle sleeve；The upper plane of the spindle box is provided with certainly
Dynamic compensation balance device, the automatic compensation balance device are used for the weight of balancing main shaft case, the automatic compensation balance device
Including bracket, it is provided with balance cylinder block and piston rod on the bracket, the piston rod tail portion is provided with floating junction, described
Floating junction is connect with the spindle box.
2. direct-connected main shaft assemble mechanism as described in claim 1, which is characterized in that the end of the main motor includes mandrel,
The second shaft coupling axle sleeve is arranged on the mandrel, and the second shaft coupling axle sleeve and the mandrel are coaxially disposed.
3. direct-connected main shaft assemble mechanism as claimed in claim 2, which is characterized in that the connecting plate for electric motor is sealed by bolt
It is fixed on the main motor, the connecting plate for electric motor and the mandrel are coaxially disposed.
4. direct-connected main shaft assemble mechanism as described in claim 1, which is characterized in that the motor cabinet is arranged in the collar bush
Cylinder outside, the motor cabinet are extended to main motor direction, the motor cabinet and the direct-connected main shaft being arranged in rack sleeve
Coaxial arrangement.
5. direct-connected main shaft assemble mechanism as claimed in claim 4, which is characterized in that between the motor cabinet and the spindle box
It is provided with the first positioning pin.
6. direct-connected main shaft assemble mechanism as described in claim 1, which is characterized in that the connecting plate for electric motor and the motor cabinet
Between be provided with the second positioning pin.
7. direct-connected main shaft assemble mechanism as described in claim 1, which is characterized in that the inner cavity of the balance cylinder block and pressure accumulation steel
Bottle connection.
8. direct-connected main shaft assemble mechanism as described in claim 1, which is characterized in that the floating junction and the spindle box
Tie point is located on the center line of the spindle box.
9. direct-connected main shaft assemble mechanism as described in claim 1, which is characterized in that the bracket is fixed on column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822122453.8U CN209174911U (en) | 2018-12-17 | 2018-12-17 | A kind of direct-connected main shaft assemble mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822122453.8U CN209174911U (en) | 2018-12-17 | 2018-12-17 | A kind of direct-connected main shaft assemble mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209174911U true CN209174911U (en) | 2019-07-30 |
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ID=67377036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822122453.8U Active CN209174911U (en) | 2018-12-17 | 2018-12-17 | A kind of direct-connected main shaft assemble mechanism |
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| Country | Link |
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| CN (1) | CN209174911U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317698A (en) * | 2018-12-17 | 2019-02-12 | 中航航空高科技股份有限公司 | A kind of direct-connected main shaft assemble mechanism |
| CN115990775A (en) * | 2023-01-16 | 2023-04-21 | 宁波海天精工股份有限公司 | Drilling and tapping center high-speed spindle assembly precision adjusting method |
-
2018
- 2018-12-17 CN CN201822122453.8U patent/CN209174911U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317698A (en) * | 2018-12-17 | 2019-02-12 | 中航航空高科技股份有限公司 | A kind of direct-connected main shaft assemble mechanism |
| CN115990775A (en) * | 2023-01-16 | 2023-04-21 | 宁波海天精工股份有限公司 | Drilling and tapping center high-speed spindle assembly precision adjusting method |
| CN115990775B (en) * | 2023-01-16 | 2024-04-05 | 宁波海天精工股份有限公司 | Drilling and tapping center high-speed spindle assembly precision adjusting method |
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