CN202224998U

CN202224998U - Pull-up type internal broacher hydraulic system

Info

Publication number: CN202224998U
Application number: CN2011201935164U
Authority: CN
Inventors: 刘定华
Original assignee: Hunan Boroto Hydraulic Equipment Co Ltd
Current assignee: Hunan Boroto Hydraulic Equipment Co Ltd
Priority date: 2011-06-10
Filing date: 2011-06-10
Publication date: 2012-05-23
Anticipated expiration: 2021-06-10

Abstract

The utility model relates to a pull-up type internal broacher hydraulic system which is composed of a broaching cylinder driving and controlling subsystem and an auxiliary action driving and controlling subsystem. A non-leakage electromagnetic ball valve is arranged between a cartridge valve bank and a proportional pressure valve and is provided with a sensor for monitoring oil pressure; a proportional flow valve, a first overflow valve, the cartridge valve bank, the proportional pressure valve, the electromagnetic ball valve and the pressure sensor are intensively installed on a main integrated block and are mutually communicated through an internal channel in the integrated block according to the hydraulic principle; a hydraulic control one-way valve and a one-way throttle valve which are used for regulating the cutter shifting speed are arranged between a second electromagnetic directional valve and a cutter shifting oil cylinder; and a one-way throttle valve for regulating the material pushing speed is arranged between a third electromagnetic directional valve and a material pushing oil cylinder. A programmable controller is used by the pull-up type internal broacher hydraulic system to control the proportional flow valve and the proportional pressure valve, thereby realizing the stepless speed change of a broaching cylinder, ensuring the processing accuracy, improving the working efficiency and degree of automation, furthest reducing the energy consumption, reducing the equipment volume and lowering the manufacturing cost.

Description

Pull-up internal broacher hydraulic system

Affiliated technical field

The utility model belongs to lathe, is specifically related to a kind of pull-up internal broacher hydraulic system.

Background technology

Broaching machine is because the material of its processing is different with technological requirement, need control device that hydraulic system can provide adjustable flow changing process velocity, and traditional method is regulating elements such as employing choke valve, flow speed control valve; Need manually-operated, inefficiency, degree of regulation are not high; Be unfavorable for automation mechanized operation; Owing to adopted regulating elements such as choke valve, flow speed control valve, cause system's heating high, energy consumption is big.

The utility model content

The objective of the invention is to utilize the action of Controlled by Programmable Controller hydraulic unit, improve automaticity, increase work efficiency, adopt the proportional valve control Variable plunger pump,, reduce idle work, cut down the consumption of energy according to real work power demand output energy.

The technical scheme of the utility model is: pull-up internal broacher hydraulic system, form with RACS by broaching cylinder driving and RACS and auxiliary movement driving.In described broaching cylinder driving and the RACS, between inserted valve group and proportional pressure valve, being provided with does not have the Solenoid ball valve of leakage; The sensor that a monitoring oil pressure is arranged; Proportional flow control valve, first overflow valve, inserted valve group, proportional pressure valve, Solenoid ball valve, pressure sensor are installed concentratedly on main integrated package and through the duct, inside in the integrated package and are connected each other by hydraulic principle; Main integrated package being provided with is used to connect Pressure gauge drives oil pressure with reflection system oil pressure and broaching pressure taps; The oil-in of main integrated package links to each other with Variable plunger pump through conduit under fluid pressure; The drain tap of Variable plunger pump links to each other with fuel tank with forced air cooler serial connection back through conduit under fluid pressure; The oil-out of main integrated package links to each other through two chambeies of fluid pressure line with the broaching oil cylinder, and oil return opening then directly links to each other with fuel tank; Described auxiliary movement drives and RACS, is provided with adjusting between the cutter oil cylinder and moves the hydraulic control one-way valve and the one-way throttle valve of cutter speed with moving at second solenoid directional control valve; Between the 3rd solenoid directional control valve and pusher oil cylinder, be provided with the one-way throttle valve of regulating pusher speed; Hydraulic valves such as check valve, second overflow valve, first solenoid directional control valve, second solenoid directional control valve, the 3rd solenoid directional control valve, hydraulic control one-way valve, one-way throttle valve are installed concentratedly on auxilliary integrated package and through the duct, inside in the integrated package and are connected each other by hydraulic principle, and auxilliary integrated package is provided with pressure taps and is used to connect Pressure gauge; The oil-in of auxilliary integrated package links to each other with auxiliary oil pump through conduit under fluid pressure; The oil-out of auxilliary integrated package through conduit under fluid pressure respectively with move cutter oil cylinder, folder cutter oil cylinder, pusher oil cylinder and link to each other; Oil return opening links to each other with fuel tank with filter serial connection back through conduit under fluid pressure.

Driving of described broaching cylinder and RACS and auxiliary movement drive and the shared fuel tank of RACS.

The utility model accurately changes the movement velocity of broaching oil cylinder with Controlled by Programmable Controller control ratio flow valve real-time regulation system flow, and cutter is motionless; Move upward together with workpiece with broaching hydraulic oil cylinder driving broaching machine workbench; Under the accurate control of proportional flow control valve to flow, this is moved upward steadily quicken at starting end, steadily slow down finally; The interlude constant motion; Make workpiece obtain suitable and stable cutting speed completion broaching, the characteristics of drawing vertical broaching machine in the utilization utilize the deadweight of broaching machine workbench that the decline of broaching oil cylinder is resetted after broaching is accomplished.Simultaneously, with proportional pressure valve adjustment broaching oil cylinder back pressure, the oil cylinder that guarantees to broach can steadily descend and not have equipment to impact; Adopt nothing to leak Solenoid ball valve and prevent interior leakage; Guarantee that the broaching machine workbench can hover at an arbitrary position, reduce the inoperative stroke, with the driving of broaching oil cylinder and control as an independent subsystem; And folder cutter, pusher, the driving that moves auxiliary movements such as cutter and control make broaching can not produce with other auxiliary movement and conflict as another independent subsystem.

The beneficial effect of utility model: utilize Programmable Logic Controller to come control ratio flow valve and proportional pressure valve, realize the infinitely variable speeds of broaching cylinder, guarantee machining accuracy; Increase work efficiency and automaticity, cut down the consumption of energy to greatest extent, the shared fuel tank of two sub-systems; Reduce equipment volume, reduced cost of manufacture, utilize a plurality of means such as variable pump, proportional flow control valve, proportional pressure valve, equipment self-weight to reduce system energy consumption; Realize low-carbon environment-friendly to greatest extent; Wherein pressure sensor can be kept watch on the broaching tool life-span, and proportional flow control valve is closed fuel cut-off and Solenoid ball valve and closed and prevent that workbench from falling, and embodies the complete safe measure during power down.

Description of drawings

Accompanying drawing 1 drives and RACS for the broaching cylinder;

Accompanying drawing 2 drives and RACS for auxiliary movement.

Among the figure: the 1-fuel tank; The 2-air filter; The 3-fluid level controller; The 4-fluid level indicator; The 5-main pump motor; The 6-Variable plunger pump; The 7-forced air cooler; The 8-proportional flow control valve; The 9-Pressure gauge; 10-inserted valve group; The 11-Solenoid ball valve; The 12-proportional pressure valve; The 13-pressure sensor; The 14-Pressure gauge; The 15-oil cylinder of broaching; 16-moves the cutter oil cylinder; 17-folder cutter oil cylinder; 18-pusher oil cylinder; 19-first overflow valve; The 20-auxiliary oil pump; 21-assists pump motor; 22-second overflow valve; The 23-check valve; 24-first solenoid directional control valve; The 25-filter; The 26-one-way throttle valve; The 27-hydraulic control one-way valve; 28-second solenoid directional control valve; 29-the 3rd solenoid directional control valve; The 30-Pressure gauge.

The specific embodiment

Provide the embodiment of the utility model below in conjunction with Fig. 1, Fig. 2, the utility model is made further explanation:

Shown in Figure 1, the broaching cylinder drives and RACS.Main pump motor 5 drives Variable plunger pumps 6 runnings, and hydraulic oil in sucking-off and the ramming system, is converted into the hydraulic pressure ability with electric energy by Variable plunger pump 6 from fuel tank 1.The aperture of Controlled by Programmable Controller proportional flow control valve 8 size changes the flow that gets into the broaching oil cylinder and reaches the purpose of regulation and control broaching oil cylinder movement velocity.

First overflow valve, 19 restriction system maximum working pressures guarantee security of system.Forced air cooler is regulated the oil temperature to the oil heat radiation of generating heat, and Pressure gauge 9 reflection system oil pressure are convenient to manual monitoring.The openings of sizes of proportion electro-magnet YA1 control ratio flow valve 8; Make the rod chamber of hydraulic oil entering broaching oil cylinder 15 after proportional flow control valve 8 is regulated the flow size of ramming system; Broaching oil cylinder 15 drives the broaching machine workbench and work piece makes progress by the steady accelerated motion of static beginning; Before near cutter, reach constant broaching speed, and keep broaching speed to accomplish broaching work.

After broaching was accomplished, electromagnet YA4 got the electric Solenoid ball valve 11 that makes to the enable possition, the steady suitable back pressure curve of setting that requires fast that the proportional pressure valve of being controlled by proportion electro-magnet YA2 12 falls according to workbench; Inserted valve group 10 is opened; Broaching oil cylinder 15 is descending under the effect of broaching machine workbench and work piece gravity, owing to there is suitable back pressure to exist, downstream rate is effectively controlled; Make whole descending process steady, unlikely generation impact and damage equipment.The rodless cavity of broaching oil cylinder 15 communicates with fuel tank 1, and hydraulic oil is extruded oil cylinder and is back to fuel tank 1 when broaching oil cylinder 15 is up, and when the oil cylinder 15 of broaching is descending because of rodless cavity in negative pressure be inhaled into oil cylinder rodless cavity.

Pressure gauge 14 shows the force value of broaching cylinder 15 rod chambers, is used for the manual monitoring cutting force.Proportion electro-magnet YA1 dead electricity when standby and workbench are descending, proportional flow control valve 8 is the disconnected pattern of complete shut-down, and Variable plunger pump 6 is close to 0 with automatic variable to output flow, and system moves with minimum energy consumption.Electromagnet YA4 dead electricity makes nothing leakage ball valve 11 be in off state; Blocked the control oil circuit of inserted valve group 10, inserted valve group 10 can not be opened, realized hovering in the optional position of broaching oil cylinder 15; Both reduced the inoperative stroke of broaching oil cylinder; Increase work efficiency, the broaching oil cylinder can hover in current location in the time of preventing because of the generation of fortuitous events such as power failure suddenly, power source fault again, can not cause the accident because of deadweight descends.The increase of driving force because the wearing and tearing of broaching cutters can be broached so in system, be provided with pressure sensor 13, reflects the degree of wear of broaching cutters through the monitoring that the broaching cylinder is driven oil pressure.

Shown in Figure 2ly be that auxiliary movement drives and RACS.Drive auxiliary oil pumps 20 runnings by auxilliary pump motor 21, with hydraulic oil from fuel tank 1 sucking-off and be pressed into auxiliary movement drive with RACS, second overflow valve, 22 control system maximum pressures, check valve 23 prevent that fluid from flowing backwards and damage oil pump; And one-way throttle valve 26, the hydraulic control one-way valve 27 of two second solenoid directional control valves 28 that connect and control thereof, through independent or action simultaneously, control move cutter oil cylinder 16 at a slow speed or fast moving and drive cutter and move.Two the 3rd solenoid directional control valves 29 are controlled 17 actions of folder cutter oil cylinder respectively with clamp-on tool and 18 motions of pusher oil cylinder, accomplish the action of workpiece loading and unloading.First solenoid directional control valve 24 electricly make the assistant subsystem off-load, make under the holding state energy consumption minimum.Filter 25 filters the cleannes that keep hydraulic oil through the hydraulic oil of convection current oil sump tank 1.Pressure gauge 30 is used for the accessory system oil pressure is carried out manual monitoring.

Broaching cylinder driving and RACS and auxiliary movement drive and the shared fuel tank 1 of RACS; Fluid amount when in fuel tank 1, also being provided with fluid level controller 3 and being used for controlling automatically in the monitoring fuel tank 1; Fluid level indicator 4 is used for intuitively showing the fluid amount in the fuel tank 1; Air filter 2 is used for keeping atmospheric pressure and the impurity of filtered air in the fuel tank 1, keeps cleanliness of hydraulic oil.

Claims

1. pull-up internal broacher hydraulic system; Form with RACS by broaching cylinder driving and RACS and auxiliary movement driving; It is characterized in that: in described broaching cylinder driving and the RACS; Between inserted valve group and proportional pressure valve, being provided with does not have the Solenoid ball valve of leakage, and the sensor of a monitoring oil pressure is arranged; Proportional flow control valve, first overflow valve, inserted valve group, proportional pressure valve, Solenoid ball valve, pressure sensor are installed concentratedly on main integrated package and through the duct, inside in the integrated package and are connected each other by hydraulic principle; Main integrated package being provided with is used to connect Pressure gauge drives oil pressure with reflection system oil pressure and broaching pressure taps; The oil-in of main integrated package links to each other with Variable plunger pump through conduit under fluid pressure; The drain tap of Variable plunger pump links to each other with fuel tank with forced air cooler serial connection back through conduit under fluid pressure; The oil-out of main integrated package links to each other through two chambeies of fluid pressure line with the broaching oil cylinder, and oil return opening then directly links to each other with fuel tank; Described auxiliary movement drives and RACS, is provided with adjusting between the cutter oil cylinder and moves the hydraulic control one-way valve and the one-way throttle valve of cutter speed with moving at second solenoid directional control valve; Between the 3rd solenoid directional control valve and pusher oil cylinder, be provided with the one-way throttle valve of regulating pusher speed; Hydraulic valves such as check valve, second overflow valve, first solenoid directional control valve, hydraulic control one-way valve, one-way throttle valve are installed concentratedly on auxilliary integrated package and through the duct, inside in the integrated package and are connected each other by hydraulic principle, and auxilliary integrated package is provided with pressure taps and is used to connect Pressure gauge; The oil-in of auxilliary integrated package links to each other with auxiliary oil pump through conduit under fluid pressure; Auxilliary integrated package oil-out through conduit under fluid pressure respectively with move cutter oil cylinder, folder cutter oil cylinder, pusher oil cylinder and link to each other; Oil return opening links to each other with fuel tank with filter serial connection back through conduit under fluid pressure.

2. is characterized in that according to the pull-up internal broacher hydraulic system of claim 1: broaching cylinder driving and RACS and auxiliary movement drive and the shared fuel tank of RACS.