CN104454692A - Hydraulic system for thread roller - Google Patents
Hydraulic system for thread roller Download PDFInfo
- Publication number
- CN104454692A CN104454692A CN201410691005.3A CN201410691005A CN104454692A CN 104454692 A CN104454692 A CN 104454692A CN 201410691005 A CN201410691005 A CN 201410691005A CN 104454692 A CN104454692 A CN 104454692A
- Authority
- CN
- China
- Prior art keywords
- oil
- hydraulic system
- valve
- piston
- oil purifier
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks
- F15B13/0424—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks the joysticks being provided with electrical switches or sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Abstract
The invention relates to a hydraulic system for a thread roller. The hydraulic system mainly comprises a pressure meter, a pressure meter switch, a two-position four-way reversing valve, an oil return pipeline oil filter, a precision oil economizing valve, a pilot overflow valve, a vane pump, an oil suction port filter, an idle running adjustable mechanism, a piston and a spring. By means of the two-position four-way reversing valve of the hydraulic system, all hydraulic oil in an oil cylinder flows back to enable the piston to smoothly return to a rear stop point under the condition that 1DT loses power, and the control of the position limit switch over a 2DT is eliminated at the same time. The rear stop point adjustable mechanism is additionally arranged at the rear end of the oil cylinder, so that the position of the rear stop point where the piston returns is adjustable, and the idle running distance is reduced. The idle running adjustable mechanism is composed of a large nut, a small nut, a flat key, a handle and a screw. The handle is fixedly connected with the screw through the small nut and the flat key, and the large end of the screw is sleeved with the large nut. The hydraulic system for the thread roller is improved on the basis of an existing hydraulic system for the thread roller, the machining size is stable after the improvement, and the working efficiency is also greatly improved.
Description
Technical field
The invention belongs to field of machining, particularly a kind of thread rolling machine hydraulic system.
Background technique
In machining industry, the multi-purpose lathes such as thread rolling machine is the various common accurate outside thread of main roll extrusion and screw mandrel, low-modulus worm, involute flower is built, low module spiral gear, oil groove, annular knurl.Such lathe often runs into size instability when threading, and error is comparatively large, causing waste product to be mixed into, causing extensive work, cause working efficiency low to inspection when processing typical products in mass production.
Summary of the invention
The object of the invention is to improve existing thread rolling machine hydraulic system, make it can ensure the stable of processing dimension, can increase work efficiency again.
A kind of thread rolling machine hydraulic system, this hydraulic system mainly comprises: pressure gauge, pressure meter switch, two-position four way change valve, return line oil purifier, accurate oil-saving valve, pilot-type relief valve, vane pump, inlet port oil purifier, idle stroke adjusting mechanism; Piston, spring; Described pressure meter switch is connected with pressure gauge, for the open and close of pilot pressure table; Described return line oil purifier, inlet port oil purifier are set up in parallel, and return line oil purifier is directly connected with two-position four way change valve; Inlet port oil purifier is connected with three position four-way directional control valve by accurate oil-saving valve, vane pump; Described pilot-type relief valve is contacted with return line oil purifier, inlet port oil purifier respectively and is connected with two-position four way change valve by accurate oil-saving valve; Described idle stroke adjusting mechanism, piston, spring are chained together and are connected with pressure meter switch;
Two-position four way change valve in-oil cylinder hydraulic oil in 1DT dead electricity situation of described hydraulic system all refluxes and makes the smooth rollback of piston to rear stop, cancels position limit switch simultaneously and controls 2DT; Install a set of rear stop idle stroke adjusting mechanism in oil cylinder rear end additional, make piston return arrive rear dead-centre position adjustable, reduce idle stroke distance.
Described idle stroke adjusting mechanism is made up of primary nut, flat key, handle, big nut, screw rod; Described handle and screw rod are fastened together by nut, flat key, and big nut is sleeved on the large end of screw rod; Handle with sleeve can make screw rod side-to-side movement.
The present invention is the improvement carried out on the basis of existing thread rolling machine hydraulic system, and after improvement, not only processing dimension is stablized, and working efficiency is also greatly improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing hydraulic system;
Fig. 2 is the structural representation after hydraulic system of the present invention is improved;
Fig. 3 is the structural representation of hollow travel adjusting mechanism of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Thread rolling machine is that machining industry uses very general a kind of lathe, is introduced below for ZA28-12.5 type thread rolling machine.The working principle of this ZA28-12.5 type thread rolling machine is as follows:
As shown in Figure 1, control three position four-way directional control valve (1DT) by the roll extrusion time relay after lathe starts and work, hydraulic oil enters oil cylinder through oil pipe makes piston move forward to front stop, and pressurize is to time regulatable power-off.Tooling step completes and then controls selector valve (2DT) work by another point of contact of the roll extrusion time relay, make hydraulic oil pressure release piston make piston move to position limit switch backward through return spring reaction force to disconnect, selector valve (2DT) dead electricity, three position four-way directional control valve closes oil circuit, and piston stops mobile.Circuit breaker work idle hours simultaneously restarts, and completes a fully automatic working circulation.
According to above-mentioned working principle, there is following problem when designing in this lathe:
The position that pistons work completes retrogressing is by position limit switch three position four-way directional control valve (1DT) dead electricity, (2DT) electricity is given, changeover valve core moves left and right and oil cylinder pressure release has refluxed, certain hour error is produced because above-mentioned action completes, piston retracted position is caused fixedly not make error larger, (0 ~ 5mm) piston going-back position can not be fixed and the time that piston works forward is determined, namely can not determine in identical time, position that identical speed piston works forward, therefore cause Product processing size inconsistent, produce waste product.
The present invention be directed to above-mentioned working principle and defect has carried out following improvement:
As shown in Figure 2 and Figure 3, a kind of thread rolling machine hydraulic system, this hydraulic system primarily of: pressure gauge 1, pressure meter switch 2, two-position four way change valve 3, return line oil purifier 4, accurate oil-saving valve 5, pilot-type relief valve 6, vane pump 7, inlet port oil purifier 8, idle stroke adjusting mechanism 9, piston 10, spring 11 form.Pressure meter switch 2 is connected with pressure gauge 1, for the open and close of pilot pressure table 1.Return line oil purifier 4, inlet port oil purifier 8 are set up in parallel, and return line oil purifier 4 is directly connected with two-position four way change valve 3; Inlet port oil purifier 8 is connected with two-position four way change valve 3 by accurate oil-saving valve 5, vane pump 7.Pilot-type relief valve 6 is contacted with return line oil purifier 4, inlet port oil purifier 8 respectively and is connected with two-position four way change valve 3 by accurate oil-saving valve 5.Idle stroke adjusting mechanism 9, piston 10, spring 11 are chained together and are connected with pressure meter switch 2.
Idle stroke adjusting mechanism 9 is made up of primary nut 12, flat key 13, handle 14, big nut 15, screw rod 16.Handle 14 and screw rod 16 are fastened together by nut 12, flat key 13, and big nut 15 is sleeved on the large end of screw rod 16.During work, handle with sleeve 14 can make screw rod 16 side-to-side movement.
The present invention improves hydraulic system, three position four-way directional control valve is replaced by two-position four way change valve, object is that in-oil cylinder hydraulic oil all refluxes and makes the sharp rollback of piston 10 to rear stop in (1DT) dead electricity situation, cancels position limit switch simultaneously and controls (2DT).Install a set of rear stop idle stroke adjusting mechanism 9 additional in oil cylinder rear end, it is adjustable that object makes piston 10 be returned to rear dead-centre position, reduces idle stroke distance, boost productivity.
Claims (2)
1. a thread rolling machine hydraulic system, this hydraulic system mainly comprises: pressure gauge (1), pressure meter switch (2), two-position four way change valve (3), return line oil purifier (4), accurate oil-saving valve (5), pilot-type relief valve (6), vane pump (7), inlet port oil purifier (8), piston (10), spring (11); It is characterized in that: this hydraulic system also comprises idle stroke adjusting mechanism (9); Described pressure meter switch (2) is connected with pressure gauge (1), for the open and close of pilot pressure table (1); Described return line oil purifier (4), inlet port oil purifier (8) are set up in parallel, and return line oil purifier (4) is directly connected with two-position four way change valve (3); Inlet port oil purifier (8) is connected with three position four-way directional control valve (3) by accurate oil-saving valve (5), vane pump (7); Described pilot-type relief valve (6) is contacted with return line oil purifier (4), inlet port oil purifier (8) and is passed through accurate oil-saving valve (5) respectively and is connected with two-position four way change valve (3); Described idle stroke adjusting mechanism (9), piston (10), spring (11) are chained together and are connected with pressure meter switch (2);
Two-position four way change valve (3) in-oil cylinder hydraulic oil in 1DT dead electricity situation of described hydraulic system all refluxes and makes piston (10) rollback extremely rear stop smoothly, cancels position limit switch simultaneously and controls 2DT; Install a set of rear stop idle stroke adjusting mechanism (9) in oil cylinder rear end additional, make piston (10) be returned to rear dead-centre position adjustable, reduce idle stroke distance.
2. thread rolling machine hydraulic system according to claim 1, is characterized in that: described idle stroke adjusting mechanism (9) is made up of primary nut (12), flat key (13), handle (14), big nut (15), screw rod (16); Described handle (14) and screw rod (16) are fastened together by nut (12), flat key (13), and big nut (15) is sleeved on the large end of screw rod (16); Handle with sleeve (14) can make screw rod (16) side-to-side movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691005.3A CN104454692A (en) | 2014-11-27 | 2014-11-27 | Hydraulic system for thread roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691005.3A CN104454692A (en) | 2014-11-27 | 2014-11-27 | Hydraulic system for thread roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104454692A true CN104454692A (en) | 2015-03-25 |
Family
ID=52901269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410691005.3A Pending CN104454692A (en) | 2014-11-27 | 2014-11-27 | Hydraulic system for thread roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104454692A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109963A (en) * | 2021-11-19 | 2022-03-01 | 济南悉通液压设备配套有限公司 | Operation control method for oil cylinder of corner combining machine and hydraulic system |
| CN115875347A (en) * | 2023-02-17 | 2023-03-31 | 烟台中宇航空液压有限公司 | Oil liquid filtering device of electro-hydraulic servo valve |
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| CN2151826Y (en) * | 1992-12-25 | 1994-01-05 | 高航 | Universal hydraulic screw thread rolling machine |
| CN2538610Y (en) * | 2002-03-15 | 2003-03-05 | 中国人民解放军第二炮兵第一研究所 | Oil pumping power device for double fuel oil charging vehicle |
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| CN102941374A (en) * | 2012-11-02 | 2013-02-27 | 无锡华联科技集团有限公司 | Tooth-shape plate double groove edge milling machine milling head rotation micro-adjusting mechanism |
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2014
- 2014-11-27 CN CN201410691005.3A patent/CN104454692A/en active Pending
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| CN2538610Y (en) * | 2002-03-15 | 2003-03-05 | 中国人民解放军第二炮兵第一研究所 | Oil pumping power device for double fuel oil charging vehicle |
| CN2638967Y (en) * | 2003-09-12 | 2004-09-08 | 云南昆船第一机械有限公司 | Conical surface sealing net filter |
| CN2730515Y (en) * | 2004-09-24 | 2005-10-05 | 苗少波 | Hydraulic controller for roll-threading machine |
| CN201077949Y (en) * | 2007-06-14 | 2008-06-25 | 湖南力威液压设备有限公司 | Multifunctional hydraulic marking-off machine for cementation of fissures |
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| CN102941374A (en) * | 2012-11-02 | 2013-02-27 | 无锡华联科技集团有限公司 | Tooth-shape plate double groove edge milling machine milling head rotation micro-adjusting mechanism |
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| CN104632771A (en) * | 2015-01-05 | 2015-05-20 | 广西大学 | Adjusting screw rod of piston type oscillating cylinder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109963A (en) * | 2021-11-19 | 2022-03-01 | 济南悉通液压设备配套有限公司 | Operation control method for oil cylinder of corner combining machine and hydraulic system |
| CN114109963B (en) * | 2021-11-19 | 2023-12-15 | 济南悉通液压设备配套有限公司 | Corner-assembled engine oil cylinder operation control method and hydraulic system |
| CN115875347A (en) * | 2023-02-17 | 2023-03-31 | 烟台中宇航空液压有限公司 | Oil liquid filtering device of electro-hydraulic servo valve |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
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| RJ01 | Rejection of invention patent application after publication |