CN106736832A - The balance control system of main spindle box or ram for lathe - Google Patents
The balance control system of main spindle box or ram for lathe Download PDFInfo
- Publication number
- CN106736832A CN106736832A CN201710099106.5A CN201710099106A CN106736832A CN 106736832 A CN106736832 A CN 106736832A CN 201710099106 A CN201710099106 A CN 201710099106A CN 106736832 A CN106736832 A CN 106736832A
- Authority
- CN
- China
- Prior art keywords
- pressure
- hydraulic oil
- oil cylinder
- ram
- main spindle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
- B23Q11/0028—Arrangements compensating weight or flexion on parts of the machine by actively reacting to a change of the configuration of the machine
Abstract
The application provides a kind of main spindle box for lathe or the balance control system of ram includes being symmetrically disposed on first oil cylinder and the second oil cylinder of main spindle box or ram both sides；The first pressure sensor and second pressure sensor being associated respectively with first oil cylinder, the second oil cylinder；The first pressure signal and second pressure signal that pressure sensor is gathered and generated, carry out the controller of contrast generation first pressure difference signal and poor number of second pressure with preset pressure signal respectively；Can be according to the pressure and flow and the first electrohydraulic proportional control valve of the hydraulic oil of first pressure difference number adjustment the first oil cylinder of input；Can be according to the pressure and flow and the second electrohydraulic proportional control valve of the hydraulic oil of second pressure difference number adjustment the second oil cylinder of input.The balance control system that the application is provided can make main spindle box or ram obtain the balance pressure of accurate, real-time stabilization, be conducive to the raising of main spindle box or ram vertically servo feed mechanism dynamic characteristic and positioning precision.
Description
Technical field
The present invention relates to digit ctrol machine tool field, the more particularly to balance control field of the main spindle box of lathe or ram.
Background technology
The balance control of the main spindle box or ram of Digit Control Machine Tool is primarily to balancing main shaft case or ram weight, reduce weight
Power axial filament thick stick drive shaft case or the driving force of ram movement, reduce leading screw abrasion.
At present, numerical control machining center generally uses pump pressure-reducing valve balancing main shaft case or the weight of ram, but uses pump
Pressure difference is controlled with pressure-reducing valve not precisely, not in time, it is impossible to enough demands for meeting high-grade numerical control machining center.Additionally, also having
The weight of some numerical control machining centers balancing main shaft case or ram by the way of accumulator and single oil cylinder, but this mode pressure
Power control accuracy is relatively low, and when part is moved, pressure value can change within the specific limits, and then causes accumulator and single oil
The balance system effect of cylinder composition is undesirable.Therefore, balance control system can directly affect the precision of whole numerical control machining center.
The content of the invention
In view of problems of the prior art, a kind of balance control of present invention main spindle box or ram for lathe of offer
System processed, including：
First oil cylinder and the second oil cylinder, are symmetrically disposed on main spindle box or ram both sides, and first oil cylinder is used to promote
The main spindle box or ram left surface are moved, and second oil cylinder is used to promote the main spindle box or ram right flank to move；
First pressure sensor, and first oil cylinder is associated, for gathering and generating first pressure signal；
Second pressure sensor, and second oil cylinder is associated, for gathering and generating second pressure signal；
Controller, contrast generation first pressure difference signal is carried out to the first pressure signal and preset pressure signal, right
The second pressure signal and preset pressure signal carry out contrast generation second pressure difference number；
First electrohydraulic proportional control valve, can be according to the hydraulic pressure of first pressure difference number adjustment input first oil cylinder
The pressure and flow of oil；
Second electrohydraulic proportional control valve, the second pressure difference number adjustment input described that can be fed back according to the controller
The pressure and flow of the hydraulic oil of two oil cylinders.
Balance control system provided by the present invention can be real when main spindle box or ram are quickly moved (>=24m/min)
When adjust the first oil cylinder and the second in-oil cylinder pressure, pressure controling precision is high, fast response time, and synchronism is strong, so as to realize
Machining center at a high speed, high precision performance.In addition, the present invention sets pressure sensor, electro-hydraulic ratio on outside hydraulic oil pipe road
Example control valve and controller, make main spindle box or ram obtain the balance pressure of accurate, real-time stabilization, are conducive to main spindle box or cunning
Rest the head on the raising of vertically servo feed mechanism dynamic characteristic and positioning precision.
In certain embodiments of the present invention, the balance control system of described main spindle box or ram for lathe is also
Can include：
First solenoid directional control valve, can be turned on and off the hydraulic oil pipeline being connected with first oil cylinder；
Second solenoid directional control valve, can be turned on and off the hydraulic oil pipeline being connected with second oil cylinder；
First accumulator, for storing a certain amount of hydraulic oil, during causing that first solenoid directional control valve is stopped,
Keep the first in-oil cylinder pressure；
First pressure relay, pressure that can be in hydraulic oil pipeline closes or turns on first electromagnetic switch
Valve；
Second accumulator, for storing a certain amount of hydraulic oil, during causing that second solenoid directional control valve is stopped,
Keep the second in-oil cylinder pressure；
Second pressure relay, pressure that can be in hydraulic oil pipeline closes or turns on second electromagnetic switch
Valve.
In certain embodiments of the present invention, described main spindle box or the balance control system of ram for lathe,
Including：
First stop valve, is arranged in hydraulic oil pipeline, for laying down first oil cylinder and described first in maintenance
Hydraulic oil in accumulator；
Second stop valve, is arranged in hydraulic oil pipeline, for laying down second oil cylinder and described second in maintenance
Hydraulic oil in accumulator.
In certain embodiments of the present invention, the balance control system of described main spindle box or ram for lathe is also
Including：
Hydraulic oil container；
Variable pump, for from the hydraulic oil container to hydraulic oil pipeline pumps hydraulic oil；
Oil-suction oil filter, the oil-out for closing on the hydraulic oil container is set, for carrying out first time filtering to hydraulic oil；
Pressure pipeline oil filter, for carrying out second filtering to the hydraulic oil in force feed pipeline；
Electromagnetic relief valve, for will be adjusted to predetermined pressure by the hydraulic oil of second filtering.
In certain embodiments of the present invention, described main spindle box or the balance control system bag of ram for lathe
Include：
First ball pivot and the second ball pivot, the ball hinged support of the first ball pivot are fixedly installed on the main spindle box or ram left side
Face, the ball part of the first ball pivot is fixedly connected with the piston rod of first oil cylinder；The ball hinged support of the second ball pivot is fixedly installed
In the main spindle box or ram left surface, the ball part of the second ball pivot is fixedly connected with the piston rod of second oil cylinder.
When between the piston rod movement axis and main spindle box or gravity of ram axle axis of movement of the first oil cylinder and the second oil cylinder
During in the presence of certain angular error, ball pivot connection has certain aligning effect, can eliminate the influence that angular error is brought.
In certain embodiments of the present invention, it is described state control system for the main spindle box of lathe or the balance of ram
System includes：It is arranged at the main spindle box or ram left end face, ball hinged support for carrying first ball pivot first
Bearing；It is arranged at the main spindle box or ram left end face, ball hinged support for carrying second ball pivot second
Seat.
Brief description of the drawings
Fig. 1 is the mechanical mechanism of the balance control system of the main spindle box or ram for lathe of an embodiment of the present invention
Partial schematic diagram；
Fig. 2 is the pipeline/electricity of the balance control system of the main spindle box or ram for lathe of an embodiment of the present invention
Road partial schematic diagram.
Wherein：
First bearing 11；Second bearing 12；
First oil cylinder 21；Second oil cylinder 22；
External hydraulic oil-piping 30；First electrohydraulic proportional control valve 31；Second electrohydraulic proportional control valve 32；First pressure is passed
Sensor 33；Second pressure sensor 34；Hydraulic oil container 35, variable pump 36, oil-suction oil filter 37, pressure pipeline oil filter 38, electricity
Magnetic overflow valve 39；
First solenoid directional control valve 51；Second solenoid directional control valve 52；First accumulator 53；Second accumulator 54；First pressure
Relay 55；Second pressure relay 56；First stop valve 57；Second stop valve 58；
First ball pivot 61；Second ball pivot 62.
Specific embodiment
In order that the purpose, technical scheme and advantage of invention are clearer, below in conjunction with the accompanying drawings with specific embodiment to hair
It is bright to be described in further detail.Although showing disclosure exemplary embodiment in accompanying drawing, it being understood, however, that can be with each
The form of kind realizes the present invention without that should be limited by embodiments set forth here.Conversely, there is provided these embodiments are able to
More thorough explanation the present invention, and can by the scope of the present invention it is complete convey to those skilled in the art.
With reference to Fig. 1 and 2, an embodiment of the present invention provides the balance control of a kind of main spindle box for lathe or ram
System, including the first bearing 11 and the second bearing 12, the first oil cylinder 21 and the second oil cylinder 22, external hydraulic oil-piping 30, first
Electrohydraulic proportional control valve 31, the second electrohydraulic proportional control valve 32, first pressure sensor 33, second pressure sensor 34, control
Device (not shown).
First bearing 11 and the second bearing 12 are symmetrically disposed on main spindle box or the both sides of ram 4.First oil cylinder 21 and second
Oil cylinder 22 is symmetrically disposed on main spindle box or the both sides of ram 4, the cylinder body of the first oil cylinder 21 be fixedly arranged at lathe column or
On slide carriage (not shown), the piston rod of the first oil cylinder 21 and the first bearing 11 are connected.The cylinder body of the second oil cylinder 22 regularly sets
It is placed on the column of lathe or slide carriage (not shown), the piston rod of the second oil cylinder 22 and the second bearing 12 are connected.
External hydraulic oil-piping 30 is connected with the cylinder body of the first oil cylinder 21, the second oil cylinder 22, with to its delivered inside hydraulic pressure
Oil.The oil cylinder 21 of first pressure sensor 33 and first is associated, and the oil cylinder 22 of second pressure sensor 34 and second is associated, respectively
For gathering the pressure in the first oil cylinder 21 and the second cylinder 22 cylinder bodies of oil, and the pressure is converted into corresponding first pressure and the
Two pressure signals.
Controller carries out contrast generation first pressure difference signal to first pressure signal and preset pressure signal, presses second
Force signal and preset pressure signal carry out contrast generation second pressure difference number.First electrohydraulic proportional control valve 31 can according to this
The pressure and flow of the hydraulic oil of one differential pressure signal adjustment the first oil cylinder 21 of input.Second electrohydraulic proportional control valve 32 being capable of root
The pressure and flow of the hydraulic oil of second pressure difference number adjustment the second oil cylinder 22 of input fed back according to controller, finally realize first
Pressure balance in the oil cylinder 22 of oil cylinder 21 and second, and then main spindle box or the left and right sides of ram 4 is maintained at equilbrium position.
It follows that it is completely right that the balance control system that the present invention is provided is located at main spindle box or the part of the both sides of ram 4
Claim.When main spindle box or the gravity axis of ram 4 are moved, due to reasons such as errors, the first oil cylinder 21 and the second cylinder oil 22 cylinders
Internal pressure has difference, and then causes unbalance stress.The present invention is provided to the balance control of the main spindle box or ram of lathe
System processed ensure that the first oil cylinder 21 and the second oil cylinder 22 obtain the balance pressure of accurate, real-time stabilization, and piston rod stress is equal
Even, synchronism is good, further improves machining center gravity axis servo feed mechanism dynamic response performance.
In certain embodiments of the present invention, also including the first solenoid directional control valve 51, the second solenoid directional control valve 52, first
Accumulator 53, the second accumulator 54, first pressure relay 55 and second pressure relay 56.First solenoid directional control valve 51 can
The hydraulic oil pipeline being connected with the first oil cylinder 21 is turned on and off, the second solenoid directional control valve 52 can be turned on and off and the second oil
The connected hydraulic oil pipeline of cylinder 22.First accumulator 53 is used to store a certain amount of hydraulic oil, to cause the first solenoid directional control valve
51 when being stopped, and keeps the pressure in the first oil cylinder 21.First pressure relay 55 continues to monitor the pressure in hydraulic oil pipeline
Power, is ready to be powered to the first solenoid directional control valve 51.Second solenoid directional control valve 52, the second accumulator 54, second pressure relay
The oil cylinder 22 of device 56 and second works also according to aforesaid way.
In addition to this it is possible to including the first stop valve 57 and the second stop valve 58.When main spindle box or ram 4 are parked in certain position
When putting, the first solenoid directional control valve 51 and the second solenoid directional control valve 52 are stopped, in the first accumulator 53 and the second accumulator 54
A certain amount of hydraulic oil is stored, for keeping the pressure in the first oil cylinder 21 and the second oil cylinder 22 constant.When maintenance, can be with
Hydraulic oil in laying down the first oil cylinder 21 and the first accumulator 53 by the first stop valve 57, is laid down by the second stop valve 58
Hydraulic oil in second oil cylinder 22 and the second accumulator 54.
With continued reference to Fig. 1 and 2, the balance control of main spindle box or ram for lathe in one embodiment of the present invention
System further comprises hydraulic oil container 35, variable pump 36, oil-suction oil filter 37, pressure pipeline oil filter 38, electromagnetic relief valve 39.
Variable pump 36 pumps into external hydraulic oil-piping 30 from hydraulic oil container 35 to the outside pumps hydraulic oil of hydraulic oil pipe road 30
Hydraulic oil first pass around oil-suction oil filter 37 and carry out first time filtering, over-pressed hydraulic piping oil filter 38 is then entered again carries out second
Secondary filtering.One tubular type can be set in the external hydraulic oil-piping 30 between oil-suction oil filter 37 and pressure pipeline oil filter 38
Check valve.Adjusted to predetermined pressure by electromagnetic relief valve 39 by the hydraulic oil of second filtering.External hydraulic oil-piping 30 can
A pressure gauge is accessed, for the pressure in operating personnel's display pipes.Adjust to the hydraulic oil of predetermined pressure and pass through respectively
Cross above-mentioned first electrohydraulic proportional control valve, 31 and second electrohydraulic proportional control valve 32 and inject the first oil cylinder 21 and the second oil cylinder 22
In cylinder body.
Further, the piston rod of the first oil cylinder 21 is connected by the first ball pivot 61 and the first bearing 11, the first ball pivot 61
Ball hinged support be fixedly installed on the first bearing 11 using bearing pin, the piston of the ball part of the first ball pivot 61 and the first oil cylinder 21
Bar is fixedly connected.Similarly, the piston rod of the second oil cylinder 22 is connected by the second ball pivot 62 and the second bearing 12, the second ball pivot 62
Ball hinged support be fixedly installed on the second bearing 12 using bearing pin, the piston of the ball part of the second ball pivot 62 and the second oil cylinder 22
Bar is fixedly connected.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is nonrestrictive.Although
The present invention is described in detail with reference to embodiment, it should be appreciated by those of ordinary skill in the art that to skill of the invention
Art scheme is modified or equivalent, and without departure from the spirit and scope of technical solution of the present invention, it all should cover at this
In the middle of the right of invention.
Claims (6)
1. the main spindle box of lathe or the balance control system of ram are used for, it is characterised in that including：
First oil cylinder and the second oil cylinder, are symmetrically disposed on main spindle box or ram both sides, and first oil cylinder is used to promote described
Main spindle box or ram left surface are moved, and second oil cylinder is used to promote the main spindle box or ram right flank to move；
First pressure sensor, and first oil cylinder is associated, for gathering and generating first pressure signal；
Second pressure sensor, and second oil cylinder is associated, for gathering and generating second pressure signal；
Controller, contrast generation first pressure difference signal is carried out to the first pressure signal and preset pressure signal, to described
Second pressure signal and preset pressure signal carry out contrast generation second pressure difference number；
First electrohydraulic proportional control valve, can be according to the hydraulic oil of first pressure difference number adjustment input first oil cylinder
Pressure and flow；
Second electrohydraulic proportional control valve, second pressure difference number adjustment input second oil that can be fed back according to the controller
The pressure and flow of the hydraulic oil of cylinder.
2. the main spindle box or the balance control system of ram for lathe according to claim 1, it is characterised in that bag
Include：
First solenoid directional control valve, can be turned on and off the hydraulic oil pipeline being connected with first oil cylinder；
Second solenoid directional control valve, can be turned on and off the hydraulic oil pipeline being connected with second oil cylinder；
First accumulator, for storing a certain amount of hydraulic oil, during causing that first solenoid directional control valve is stopped, keeps
First in-oil cylinder pressure；
First pressure relay, pressure that can be in hydraulic oil pipeline closes or turns on first solenoid directional control valve；
Second accumulator, for storing a certain amount of hydraulic oil, during causing that second solenoid directional control valve is stopped, keeps
Second in-oil cylinder pressure；
Second pressure relay, pressure that can be in hydraulic oil pipeline closes or turns on second solenoid directional control valve.
3. the main spindle box or the balance control system of ram for lathe according to claim 2, it is characterised in that bag
Include：
First stop valve, is arranged in hydraulic oil pipeline, for laying down first oil cylinder and first accumulation of energy in maintenance
Hydraulic oil in device；
Second stop valve, is arranged in hydraulic oil pipeline, for laying down second oil cylinder and second accumulation of energy in maintenance
Hydraulic oil in device.
4. the main spindle box or the balance control system of ram for lathe according to claim 3, it is characterised in that bag
Include：
Hydraulic oil container；
Variable pump, for from the hydraulic oil container to hydraulic oil pipeline pumps hydraulic oil；
Oil-suction oil filter, the oil-out for closing on the hydraulic oil container is set, for carrying out first time filtering to hydraulic oil；
Pressure pipeline oil filter, for carrying out second filtering to the hydraulic oil in force feed pipeline；
Electromagnetic relief valve, for will be adjusted to predetermined pressure by the hydraulic oil of second filtering.
5. the main spindle box or the balance control system of ram for lathe according to claim 1, it is characterised in that bag
Include：
First ball pivot and the second ball pivot, the ball hinged support of the first ball pivot are fixedly installed on the main spindle box or ram left surface, the
The ball part of one ball pivot is fixedly connected with the piston rod of first oil cylinder；The ball hinged support of the second ball pivot is fixedly installed on described
Main spindle box or ram left surface, the ball part of the second ball pivot are fixedly connected with the piston rod of second oil cylinder.
6. the main spindle box or the balance control system of ram for lathe according to claim 5, it is characterised in that bag
Include：
It is arranged at the main spindle box or ram left end face, ball hinged support for carrying first ball pivot first
Seat；
It is arranged at the main spindle box or ram left end face, ball hinged support for carrying second ball pivot second
Seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710099106.5A CN106736832A (en) | 2017-02-23 | 2017-02-23 | The balance control system of main spindle box or ram for lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710099106.5A CN106736832A (en) | 2017-02-23 | 2017-02-23 | The balance control system of main spindle box or ram for lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106736832A true CN106736832A (en) | 2017-05-31 |
Family
ID=58959991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710099106.5A Pending CN106736832A (en) | 2017-02-23 | 2017-02-23 | The balance control system of main spindle box or ram for lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106736832A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813534A (en) * | 2017-11-27 | 2018-03-20 | 吕言 | Press machine system, control method and bascule |
| CN112496358A (en) * | 2020-11-25 | 2021-03-16 | 浙江侨宏机械制造有限公司 | Spindle box for numerical control machine tool and forming die thereof |
| CN114346700A (en) * | 2022-01-17 | 2022-04-15 | 上海赛卡精密机械有限公司 | Intelligent numerical control machine ram hydraulic balance system and numerical control machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813534A (en) * | 2017-11-27 | 2018-03-20 | 吕言 | Press machine system, control method and bascule |
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Application publication date: 20170531 |