CN104440414A - Efficient constant pressure difference intermittent rotating extrusion abrasive flow polishing device - Google Patents
Efficient constant pressure difference intermittent rotating extrusion abrasive flow polishing device Download PDFInfo
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- CN104440414A CN104440414A CN201410742611.3A CN201410742611A CN104440414A CN 104440414 A CN104440414 A CN 104440414A CN 201410742611 A CN201410742611 A CN 201410742611A CN 104440414 A CN104440414 A CN 104440414A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
Abstract
The invention relates to an efficient constant pressure difference intermittent rotating extrusion abrasive flow polishing device and belongs to the technical field of intermittent rotating extrusion abrasive flow automatic polishing of large-size complicated curved parts with higher uniformity requirements on surface quality. The abrasive flow polishing device is a rotating grinding and polishing device where a hydraulic motor drives a gear and is engaged with a negative clearance turntable bearing; sealing rings are mounted on junction surfaces to achieve static sealing of a high-pressure abrasive; dynamic sealing of the high-pressure abrasive is achieved by mounting quick-wear sealing rings at rotating friction parts for sealing and mounting special combined high-pressure abrasive sealing ring and high-pressure abrasive seals in places where pistons extrude the abrasive; and finally, intermittent rotation grinding and polishing of the high-pressure abrasive is achieved. The device solves the problems of excessive grinding and rounding in the traditional abrasive flow extrusion, and achieves aerodynamic performances and efficient precise uniform polishing of complicated curved surfaces such as impellers and blades with the higher surface uniformity requirements. The device can reduce surface roughness Ra of various complicated parts to below 0.8.
Description
Technical field
The present invention relates to a kind of effective constant pressure reduction batch (-type) rotary squeezing abrasive flows burnishing device, belong to the automatic polishing technical field of the batch (-type) rotary squeezing abrasive flows for the complex-curved class part of the large scale that surface quality requirements homogeneity is higher.
Background technology
Such as aero-engine blisk, impeller, blade, thin-wall part, pump valve body and elongated hole etc. have complex-curved engineering goods after grinding, milling, spark machined or other special processs, need even, the low roughness smooth surface processing request that are realized workpiece to be machined surface by superfinishing.Current corporate boss will adopt oilstone or manual glossing, and adopts traditional squeezing mill stream technology can produce " rounding ", " cross and throw " phenomenon, have impact on the uniformity of product surface greatly.This mainly due to: (1), owing to the reason such as to interfere, track is complicated, the rigidity polishing tool efficiency such as wheelhead or abrasive band is low and cost is high, the polishing that very difficult realization is complex-curved efficiently; (2) tradition " passes thorax to cross " the rotary squeezing abrasive flows of formula squeezing mill stream and slewing parts when polishing is complex-curved, due to the existence of inlet outlet pressure differential, be easy to make processed after workpiece to occur that pressure general goal removes material many, the few inhomogeneities of material is removed at the little place of pressure; (3) " suction " formula being carried out controlling as power source by pump valve rotates abrasive flow machining, hydraulic system of comparing is as the squeezing mill stream processing method of feed transmission system, although produce without pressure differential in hydroabrasive polishing process because itself pressure is low, but its pressure provided is little, abrasive material viscosity is low, abrasive particle is loose, and when after polishing processing to certain phase, processing effect is also not obvious.
Adopting squeezing mill stream technique complex-curved to mould inner surface, aperture, valve pocket etc. is a kind of finishing method efficiently, but the conventional extruded abrasive flows technique applied in enterprise, be mainly used in the not high impeller of air conditioner of aerodynamic performance requirements, hydraulic pressure valve pocket, elongated hole etc. are to generation " rounding ", and " cross and throw " affects in little parts afterwards, and for the higher aero-engine impeller of aerodynamic performance requirements, blade, consistent complex-curved of the surface homogeneity requirement such as the screw rod of high physical property, because conventional extruded abrasive flows is in abrasive material extrusion process workpiece fabrication, inlet outlet pressure differential is not etc., so that form uneven pressure field flowing through in workpiece to be machined seal chamber, thus very easily cause workpiece to be machined surface to produce " cross and throw " in abrasive material extruding inflow and outflow place, surperficial non-uniform phenomenons such as " roundings ", and rely on the loose low viscous rotating grinding stream polishing of pump valve drawing-in type, there is provided pressure little, abrasive particle viscosity is low, ideal as superfinishing throwing application, and should not apply and rough polishing, half essence is thrown and the smart throwing stage.
Summary of the invention
For realizing aero-engine leaf dish, the automation polishing of the large complicated carved part such as impeller, reach surface finish even, texture rule, roughness is less than the designing requirement of below Ra0.8, and significantly improve production efficiency, alleviate labor strength and improve operating environment, the invention provides a kind of effective constant pressure reduction batch (-type) rotary squeezing abrasive flows burnishing device, this squeezing mill stream burnishing device should adopt and realize the Hydraulic Power Transmission System of semisolid hydroabrasive Bidirectional-squeezing in seal chamber that constant-pressure drop controls, gear external toothing turntable bearing rotary system and the device body of power are provided by hydraulic motor, the high pressure dynamic and static state sealing system of semisolid hydroabrasive, and the location of the complex-curved class part of large scale, clamping device etc.The oil return line of Hydraulic Power Transmission System arranges back pressure apparatus, makes semisolid hydroabrasive pressure field in extrusion process constant, prevent squeezing mill stream from throwing, rounding phenomenon occurring due to pressure uneven institute; When semisolid hydroabrasive is while carrying out timing alternation bidirectional circulating flowing polish parts surface, part born by fluid motor-driven gear driven the external toothing turntable bearing of play the workpiece to be machined fixed do the rotary motion of equal angular batch (-type) reverse circulation to improve the uniformity on workpiece to be machined surface further, prevent the quality problems such as polishing dead angle; In high-pressure fluid abrasive material material cylinder and the rotation of device body and the design of faying face place be specifically designed to sealed high pressure abrasive material dynamically and static seal, prevent the leakage of high-pressure fluid abrasive material and to by the wearing and tearing of non-the treatment of surfaces of components and protection.
The technical solution used in the present invention is as follows: a kind of effective constant pressure reduction batch (-type) rotary squeezing abrasive flows burnishing device, and it comprises the two-way feeding system of hydraulic drive of constant-pressure drop control and rotates the high pressure sealing system with fixed combinating surface place hydroabrasive; What it also comprised the sliding guide rail system that ensures that the processing of constant-pressure drop hydraulic clamp is lower and the rotation of positive and negative batch (-type) bears play turntable bearing rotary system by the external toothing of PLC hydraulic control motor driven gear wheel;
The two-way feeding system of described hydraulic drive adopts hydraulic pump to pump hydraulic oil and enters lower extrusion oil cylinder by the first three position four-way directional control valve through the first check valve, the seal chamber that abrasive material passes workpiece to be machined and clamp body formation is promoted by the first interlock pushing piston being arranged in lower extrusion oil cylinder and blanking cylinder, and press to the squeezing mill polishing apparatus being arranged in extrusion oil cylinder and material loading cylinder second interlock pushing piston, upper extrusion oil cylinder oil return is driven by the second interlock pushing piston, the oil return circuit of fuel tank is flowed back in oil return after the first overflow valve of adjustment System back pressure by the first three position four-way directional control valve, upper extrusion oil cylinder 9 is communicated with fuel tank with the rod chamber of lower extrusion oil cylinder 4 simultaneously, after first three position four-way directional control valve commutation, hydraulic pump pumps hydraulic oil and enters upper extrusion oil cylinder by the first three position four-way directional control valve through the second check valve, the seal chamber that abrasive material passes workpiece to be machined and clamp body formation is promoted by the second interlock pushing piston being arranged in upper extrusion oil cylinder and material loading cylinder, and press to the squeezing mill polishing apparatus being arranged in lower extrusion oil cylinder and blanking cylinder first interlock pushing piston, lower extrusion oil cylinder oil return is driven by the first interlock pushing piston, the oil return circuit of fuel tank is flowed back in oil return after the second overflow valve of adjustment System back pressure by the first three position four-way directional control valve, lower extrusion oil cylinder is communicated with fuel tank with the rod chamber of upper extrusion oil cylinder simultaneously,
Described turntable bearing rotary system adopts and pumps the speed governing oil circuit driving hydraulic motor of hydraulic oil by the second three position four-way directional control valve employing bidirectional rotation by hydraulic pump, the output shaft of hydraulic motor is connected with rotating shaft through shaft coupling, the gear be fixed on rotating shaft is born play turntable bearing with external tooth type and is meshed, drive and be fixed on external tooth type and bear play lower rotary table bearing and external tooth type and bear the rotating grinding polishing apparatus rotated together with workpiece to be machined on play top rotary table bearing outer ring and clamp body, and control angularly batch (-type) by PLC and rotate;
Described high pressure sealing system adopts external toothing formula to bear play top rotary table bearing, external toothing formula bears play lower rotary table bearing outer ring respectively by bolt and top rotary table, lower rotary table is connected, and external toothing formula is born play top rotary table bearing inner race by the flange of bolt with material loading cylinder and is connected, and external toothing formula is born play lower rotary table bearing inner race by bolt and is connected with the flange of workbench and blanking cylinder respectively, the first sealing ring easy to wear, second sealing ring is by the first dormant bolt, second dormant bolt and material loading cylinder, blanking cylinder is connected, at the first sealing ring, second sealing ring outer rotary surface and top rotary table, the first combined seal ring is provided with between lower rotary table, second combined seal ring and the first wear-resistant seal, second wear-resistant seal, top rotary table, lower rotary table and upper clamp body, the faying face place of lower clamp body is provided with the first sealing ring, second sealing ring, by upper clamp body, the 3rd sealing ring is installed at faying face place between the workpiece to be machined of lower clamp body and jig main body parcel, 4th sealing ring is the special first high-pressure abrasive material sealing ring of material by tetrafluoro bronze, second high-pressure abrasive material sealing ring, first high pressure anti-wear abrasive material envelope and the second high pressure anti-wear abrasive material envelope are installed on blanking cylinder respectively, the first interlock pushing piston in material loading cylinder, on second interlock pushing piston.
Described sliding guide rail system adopts and pumps by hydraulic pump the hydraulic circuit that hydraulic oil controls the first clamping cylinder by the 3rd three position four-way directional control valve, the second clamping cylinder clamps and unclamps, four root post one end are connected with fixing top board, the other end is fixed on the supporting frame of workbench, be installed on the first clamping cylinder on fixing top board, the second clamping cylinder, connected the crossbeam be combined as a whole with upper extrusion oil cylinder and material loading cylinder by its piston rod, four root posts are through the guide pin bushing be welded in respectively on crossbeam.
Described turntable bearing rotary system adopts negative play rotating disk supporting to realize rotary drive, the gears meshing driven by hydraulic motor makes working speed between 0.5 rev/min to 2 revs/min, rotated by PLC control realization workpiece to be machined and angularly stop the rotation afterwards, only carry out the multi-station polishing of extrusion process, and limit extrusion process, limit rotate processing rotation grinding and polishing.
The operation principle of technique scheme is adopted to be: for the semisolid hydroabrasive of conventional extruded abrasive flows in processing slim hole, thin-wall part, time large complicated carved, due to the import of abrasive material and outlet pressure uneven, and the workpiece to be machined abrasive material import caused produces " cross and throw ", even " rounding ", and exit removal amount this problem little, back pressure apparatus is increased in the hydraulic control oil circuit of squeezing mill stream, adjustment System back pressure before processing and in process, make semisolid hydroabrasive pressure reduction in the seal chamber flowing through workpiece to be machined constant, thus it is constant to realize removal amount, and for workpiece to be machined actionless conventional extruded abrasive flows technique, batch (-type) spinfunction is increased by external toothing formula pivoting support, make the workpiece to be machined of semisolid hydroabrasive grinding and polishing rotary motion, thus add the movement velocity of abrasive particle, again while further homogenize, add working (machining) efficiency.
On the other hand, the feature that the pressure of the drawing-in type rotating grinding stream controlled by pump valve relative to loose low viscosity is low, be generally below 0.7MP, what this extruding rotating grinding stream adopted is semi-solid hydroabrasive, and adopts hydraulic drive as control system, and due to the existence of system back pressure, operating pressure in system can be made to reach more than 10MP, improve workpiece to be machined under rotation status, the squeeze pressure of abrasive particle in semisolid hydroabrasive, make grinding and polishing effect more obvious.
The invention has the beneficial effects as follows:
(1) effectively can solve all kinds of complex-curved surperficial efficient uniform polishing problem, comprise higher complex-curved of asymmetric curved surface, non-rotating class part and effects on surface aeroperformance, uniformity.
(2) by the adjustment of system back pressure, improve the operating pressure on semisolid hydroabrasive extruding workpiece to be machined surface in seal chamber, the abrasive flow machining that inlet and outlet pressure of comparing is larger, working (machining) efficiency is high and surface to be machined is more even.
(3) by the step spinfunction that PLC controls, after realizing angularly rotating, under different flow location form, when carrying out static to workpiece to be machined and rotary motion time constant-pressure drop extrude polishing processing, raising grinding and polishing uniformity.
(4) compared to high pressure liquid force feed, and irrotational static squeezing mill stream sealing device, by increase vulnerable part, and be the special high-pressure abrasive material sealing ring of material, the combination sealing of high pressure anti-wear abrasive material envelope with tetrafluoro bronze, achieve the dynamic seal (packing) of high-pressure abrasive material.
(5) to various complex parts, its surface roughness Ra value can be made to be reduced to less than 0.8 by the design of special upper and lower clamp body and jig main body.
Accompanying drawing explanation
Fig. 1 is constant-pressure drop rotary squeezing abrasive flows hydraulic circuit control chart.
Fig. 2 is that batch (-type) rotates grinding and polishing faying face place static seal structure schematic diagram.
Fig. 3 is that batch (-type) rotates movable sealing structure schematic diagram in grinding and polishing extrusion process.
Fig. 4 is constant-pressure drop rotary squeezing abrasive flows workbench main body and clamping, supporting frame structure chart.
Fig. 5 is constant-pressure drop rotary squeezing abrasive flows workbench A direction view.
In figure: 1, hydraulic pump, 2, first three position four-way directional control valve, 3, first check valve, 4, lower extrusion oil cylinder, 5, blanking cylinder, 6, first interlock pushing piston, 7, material loading cylinder, 8, second interlock pushing piston, 9, upper extrusion oil cylinder, 10, first overflow valve, 11, second check valve, 12, second overflow valve, 13, second three position four-way directional control valve, 14, hydraulic motor, 15, shaft coupling, 16, rotating shaft, 17, gear, 18, external tooth type bears play lower rotary table bearing, and 19, external tooth type bears play top rotary table bearing, and 20, first sealing ring, 21, second sealing ring, 22, first dormant bolt, 23, second dormant bolt, 24, first combined seal ring, 25, second combined seal ring, 26, first wear-resistant seal, 27, second wear-resistant seal, 28, top rotary table, 29, lower rotary table, 30, workbench, 31, lower clamp body, 32, upper clamp body, 33, first sealing ring, 34, second sealing ring, 35, 3rd sealing ring, 36, 4th sealing ring, 37, jig main body, 38, workpiece to be machined, 39, first high pressure anti-wear abrasive material envelope, 40, first high-pressure abrasive material sealing ring, 41, semisolid high-pressure fluid abrasive material, 42, column, 43, fixing top board, 44, first clamping cylinder, 45, second clamping cylinder, 46, crossbeam, 47, guide pin bushing, 48, big nut, 49, first Pressure gauge, 50, second Pressure gauge, 51, 3rd three position four-way directional control valve, 52, second high pressure anti-wear abrasive material envelope, 53, second high-pressure abrasive material sealing ring.
Detailed description of the invention
Above-mentioned abrasive flows burnishing device comprises the two-way feeding system of hydraulic drive, turntable bearing rotary system, high pressure sealing system and sliding guide rail system.
The two-way feeding system of hydraulic drive adopts hydraulic pump 1 to pump hydraulic oil and enters lower extrusion oil cylinder 4 by the first three position four-way directional control valve 2 through the first check valve 3, the seal chamber that abrasive material passes workpiece to be machined 38 and clamp body formation is promoted by the first interlock pushing piston 6 being arranged in lower extrusion oil cylinder 4 and blanking cylinder 5, and press to the squeezing mill polishing apparatus being arranged in extrusion oil cylinder 9 and material loading cylinder 7 second interlock pushing piston 8, upper extrusion oil cylinder 9 oil return is driven by the second interlock pushing piston 8, the oil return circuit of fuel tank is flowed back in oil return after the first overflow valve 10 of adjustment System back pressure by the first three position four-way directional control valve 2, upper extrusion oil cylinder 9 is communicated with fuel tank with the rod chamber of lower extrusion oil cylinder 4 simultaneously, after first three position four-way directional control valve 2 commutates, hydraulic pump 1 pumps hydraulic oil and enters upper extrusion oil cylinder 9 by the first three position four-way directional control valve 2 through the second check valve 11, the seal chamber that abrasive material passes workpiece to be machined 38 and clamp body formation is promoted by the second interlock pushing piston 8 being arranged in upper extrusion oil cylinder 9 and material loading cylinder 7, and press to the squeezing mill polishing apparatus being arranged in lower extrusion oil cylinder 4 and blanking cylinder 5 first interlock pushing piston 6, lower extrusion oil cylinder 4 oil return is driven by the first interlock pushing piston 6, the oil return circuit of fuel tank is flowed back in oil return after the second overflow valve 12 of adjustment System back pressure by the first three position four-way directional control valve 2, lower extrusion oil cylinder 4 is communicated with fuel tank with the rod chamber of upper extrusion oil cylinder 9 simultaneously,
The employing of turntable bearing rotary system is pumped hydraulic oil by hydraulic pump 1 and is adopted the speed governing oil circuit of bidirectional rotation to drive hydraulic motor 14 by the second three position four-way directional control valve 13, the output shaft of hydraulic motor 14 is connected with rotating shaft 16 through shaft coupling 15, the gear 17 be fixed on rotating shaft 16 is born play turntable bearing 18 with external tooth type and is meshed, drive and be fixed on external tooth type and bear play lower rotary table bearing 18 and external tooth type and bear the rotating grinding polishing apparatus rotated together with workpiece to be machined on play top rotary table bearing 19 outer ring and clamp body, and control angularly batch (-type) by PLC and rotate;
High pressure sealing system adopts external toothing formula to bear play top rotary table bearing 19, external toothing formula bears play lower rotary table bearing 18 outer ring respectively by bolt and top rotary table 28, lower rotary table 29 is connected, and external toothing formula is born play top rotary table bearing 19 inner ring by the flange of bolt with material loading cylinder 7 and is connected, external toothing formula is born play lower rotary table bearing 18 inner ring and is connected with the flange of workbench 30 and blanking cylinder 5 respectively by bolt, the first sealing ring 20 easy to wear, second sealing ring 21 is by the first dormant bolt 22, second dormant bolt 23 and material loading cylinder 7, blanking cylinder 5 is connected, at the first sealing ring 20, second sealing ring 21 outer rotary surface and top rotary table 28, the first combined seal ring 24 is provided with between lower rotary table 29, second combined seal ring 25 and the first wear-resistant seal 26, second wear-resistant seal 27, top rotary table 28, lower rotary table 29 and upper clamp body 32, the faying face place of lower clamp body 31 is provided with the first sealing ring 33, second sealing ring 34, by upper clamp body 32, the 3rd sealing ring 35 is installed at faying face place between the workpiece to be machined 38 that lower clamp body 31 and jig main body 37 wrap up, 4th sealing ring 36 is the special first high-pressure abrasive material sealing ring 40 of material by tetrafluoro bronze, second high-pressure abrasive material sealing ring 53, first high pressure anti-wear abrasive material envelope 39 and the second high pressure anti-wear abrasive material envelope 52 are installed on blanking cylinder 5 respectively, the first interlock pushing piston 6 in material loading cylinder 7, on second interlock pushing piston 8.
Sliding guide rail system adopts and pumps hydraulic oil by hydraulic pump 1 and control by the 3rd three position four-way directional control valve 51 hydraulic circuit that first clamping cylinder 44, second clamping cylinder 45 clamps and unclamp, four root post 42 one end are connected with fixing top board 43, the other end is fixed on the supporting frame of workbench 30, be installed on the first clamping cylinder 44, second clamping cylinder 45 on fixing top board 43, connect by its piston rod crossbeam 46, four root post 42 be combined as a whole with upper extrusion oil cylinder 9 and material loading cylinder 7 and pass the guide pin bushing 47 be welded in respectively on crossbeam 46.
Turntable bearing rotary system adopts negative play rotating disk supporting to realize rotary drive, the gears meshing driven by hydraulic motor makes working speed between 0.5 rev/min to 2 revs/min, rotated by PLC control realization workpiece to be machined and angularly stop the rotation afterwards, only carry out the multi-station polishing of extrusion process, and limit extrusion process, limit rotate processing rotation grinding and polishing.
Operation principle and the structure of abrasive flows burnishing device is introduced below in conjunction with accompanying drawing:
Fig. 1 shows constant-pressure drop rotary squeezing abrasive flows hydraulic circuit control chart.In figure, the hydraulic oil pumped by hydraulic pump 1 drives hydraulic motor 14 by the second three position four-way directional control valve 13, be connected with the rotating shaft 16 be fixed in workbench 30 by shaft coupling 15, and gear 17 is fixed on rotating shaft 16, the outer ring that gear 17 bears play lower rotary table bearing 18 with external tooth type clamp body and workpiece to be machined 38 are fixed as one is meshed, and then the external tooth type driving clamp body and workpiece to be machined 38 to be fixed as one bears the rotary motion of the outer ring completion system of play top rotary table bearing 19, wherein realize two-way positive and negative speed change by hydraulic motor 14.And external tooth type bears play lower rotary table bearing 18, external tooth type is born play top rotary table bearing 19 inner ring and is connected with workbench 30 and material loading cylinder 7 flange respectively, static to ensure.
Fig. 2 shows batch (-type) and rotates grinding and polishing faying face place static seal structure schematic diagram.At top rotary table 28 and upper clamp body 32 and the lower rotary table 29 faying face place with lower clamp body 31, first sealing ring 33 is installed respectively, second sealing ring 34, and jig main body 37 installs the 3rd sealing ring 35 with the faying face place of lower clamp body 31 and jig main body 37 installs the 4th sealing ring 36, to stop the leakage at faying face place in extrusion process of high-pressure fluid abrasive material with the faying face place of upper clamp body 32.
Fig. 3 shows batch (-type) and rotates movable sealing structure schematic diagram in grinding and polishing extrusion process.First sealing ring 20 easy to wear, in the extrusion process of high-pressure rotary grinding and polishing, is connected with the blanking cylinder 7 in Fig. 1 by the first dormant bolt 22 and is connected with the material loading cylinder 5 in Fig. 1 by the second dormant bolt 23 by the second sealing ring 21 easy to wear by semisolid hydroabrasive, the outer ring that top rotary table in Fig. 2 28 and external tooth type in Fig. 1 bear play top rotary table bearing 19 is connected by bolt, and lower rotary table 29 and external tooth type are born play lower rotary table bearing 18 outer ring and are connected by bolt, wherein at top rotary table 28 and the second sealing ring 21 easy to wear, lower rotary table 29 and the first sealing ring 20 relative motion place easy to wear, respectively at top rotary table 28, the recessing of lower rotary table 29 inner surface, to install the first combined seal ring 24, and second combined seal ring 25 and the first wear-resistant seal 26, second wear-resistant seal 27 is to stop the leakage in high-pressure fluid abrasive material rotary course and to reduce the wearing and tearing of expecting cylinder cylinder body itself, material loading cylinder 7 in addition, second interlock pushing piston 8 in blanking cylinder 5, first interlock pushing piston 6 promotes semisolid high-pressure fluid abrasive material 41, surperficial by workpiece to be machined, clamp body die cavity, compressional movement is done in the seal chamber that material loading cylinder 7 and blanking cylinder 5 are formed, at the second interlock pushing piston 8, recessing on first interlock pushing piston 6, and install respectively with tetrafluoro bronze as the first high-pressure abrasive material sealing ring 40 of material, second high-pressure abrasive material sealing ring 53 and the first high pressure anti-wear abrasive material envelope 39, second high pressure anti-wear abrasive material envelope 52 realizes the extruding dynamic seal (packing) of high-pressure fluid abrasive material.
Fig. 4,5 shows constant-pressure drop rotary squeezing abrasive flows workbench main body and clamping, supporting frame structure chart.By four root posts 42 with material loading cylinder 7, centered by blanking cylinder 5, one end is evenly fixed on workbench 30, the other end is connected with fixing top board 43 by big nut 48, first clamping cylinder 44, second clamping cylinder 45 is fixed on fixing top board 43 by flange, for ensureing the synchronous of motion, by two clamping cylinder piston rods, upper extrusion oil cylinder 9 and material loading cylinder 7 are connected with crossbeam 46 respectively, and for ensureing the accuracy of motion, four identical sliding guide sleeves 47 are welded in respectively four edges of crossbeam 46, and be sleeved on four columns 42, to make the upper extrusion oil cylinder 9 that clamping cylinder piston actuated is connected with crossbeam 46, material loading cylinder 7 is in clamping or when unclamping workpiece to be machined 38, with four columns 42 for guide rail guiding, realize moving up and down accurately.
The course of work of constant-pressure drop rotating grinding stream burnishing device is introduced below for aero-engine blisk class part.
First the pushing piston 6 that linked by the second interlock pushing piston 8, first of material loading cylinder 7, blanking cylinder 5 moves to lowermost end respectively, makes that blanking cylinder 5 volume is maximum and material loading cylinder 7 volume is minimum, and blanking cylinder 5 is filled up semisolid hydroabrasive 41.Secondly clamping cylinder piston driving material loading cylinder 7 and assembly thereof move up, and workpiece to be machined 38 clamp body 32, lower clamp body 31 and jig main body 37 parcel is integrated, be put in and bear with external tooth type on lower rotary table 29 that play lower rotary table bearing 18 outer ring is connected.Clamping cylinder piston promotes the material loading cylinder 7 that connects and the crossbeam 46 of upper extrusion oil cylinder 9 and guide pin bushing 47 thereof and moves downward along four columns 42 and compress the workpiece to be machined 38 that clamp body 32, lower clamp body 31 and jig main body 37 wrap up, and its clamp, release process realized by the 3rd three position four-way directional control valve 51 in PLC hydraulic control system.
Again regulating the first overflow valve 10 in advance, on the basis of the second overflow valve 12, pump hydraulic oil by hydraulic pump 1 to make first of lower extrusion oil cylinder 4 the interlock pushing piston 6 moves, promote semisolid hydroabrasive 41 and extrude workpiece to be machined 38, i.e. each blade surface of aero-engine blisk, and in extrusion process, by upper extrusion oil cylinder 9, first Pressure gauge 49 at lower extrusion oil cylinder 4 rodless cavity place, force value in second Pressure gauge 50 observing system, if it is larger to there is pressure reduction, then adjust the first overflow valve 10, spring set up by second overflow valve 12, further adjustment return pressure, increase back pressure, and finally make material loading cylinder 7, the pressure reduction in blanking cylinder 5 exit is constant.Then the mode combined with touch-screen by PLC sets upper and lower extrusion cycle number of times, each anglec of rotation, and the turning to of the second three position four-way directional control valve 13 hydraulic control motor 14, rotating speed in hydraulic system, to realize the motion of positive and negative, Multi-stage rotary, and in hydraulic system, the first three position four-way directional control valve 2 realizes two-way constant pressure difference hydroabrasive and repeatedly extrudes grinding and polishing.
After last rotary squeezing grinding and polishing terminates, hydraulic motor 14 stall, lower extrusion oil cylinder 4, upper extrusion oil cylinder 9 off-load quitting work, then the first clamping cylinder 44, second clamping cylinder 45 off-load unclamp workpiece to be machined and clamp body assembly, and drive the crossbeam 46 be connected with material loading cylinder 7 and upper extrusion oil cylinder 9 to move upward along column 42, vacate the withdrawal space, go up clamp body 32, lower clamp body 31 the most at last and the workpiece to be machined 38 that wraps up together takes off, finally open clamp body, take out workpiece to be machined 38 and wiped clean.
Claims (2)
1. an effective constant pressure reduction batch (-type) rotary squeezing abrasive flows burnishing device, it comprises the two-way feeding system of hydraulic drive of constant-pressure drop control and rotates the high pressure sealing system with fixed combinating surface place hydroabrasive; It is characterized in that: what it also comprised the sliding guide rail system that ensures that the processing of constant-pressure drop hydraulic clamp is lower and the rotation of positive and negative batch (-type) bears play turntable bearing rotary system by the external toothing of PLC hydraulic control motor driven gear wheel;
The two-way feeding system of described hydraulic drive adopts hydraulic pump (1) to pump hydraulic oil and enters lower extrusion oil cylinder (4) by the first three position four-way directional control valve (2) through the first check valve (3), the seal chamber that abrasive material passes workpiece to be machined (38) and clamp body formation is promoted by the first interlock pushing piston (6) being arranged in lower extrusion oil cylinder (4) and blanking cylinder (5), and press to the squeezing mill polishing apparatus being arranged in extrusion oil cylinder (9) and material loading cylinder (7) second interlock pushing piston (8), by extrusion oil cylinder (9) oil return in the second interlock pushing piston (8) driving, the oil return circuit of fuel tank is flowed back in oil return after first overflow valve (10) of adjustment System back pressure by the first three position four-way directional control valve (2), upper extrusion oil cylinder (9) is communicated with fuel tank with the rod chamber of lower extrusion oil cylinder (4) simultaneously, after first three position four-way directional control valve (2) commutation, hydraulic pump (1) pumps hydraulic oil and enters upper extrusion oil cylinder (9) by the first three position four-way directional control valve (2) through the second check valve (11), the seal chamber that abrasive material passes workpiece to be machined (38) and clamp body formation is promoted by the second interlock pushing piston (8) being arranged in upper extrusion oil cylinder (9) and material loading cylinder (7), and press to the squeezing mill polishing apparatus being arranged in lower extrusion oil cylinder (4) and blanking cylinder (5) first interlock pushing piston (6), lower extrusion oil cylinder (4) oil return is driven by the first interlock pushing piston (6), the oil return circuit of fuel tank is flowed back in oil return after second overflow valve (12) of adjustment System back pressure by the first three position four-way directional control valve (2), lower extrusion oil cylinder (4) is communicated with fuel tank with the rod chamber of upper extrusion oil cylinder (9) simultaneously,
Described turntable bearing rotary system adopts and pumps speed governing oil circuit driving hydraulic motor (14) of hydraulic oil by the second three position four-way directional control valve (13) employing bidirectional rotation by hydraulic pump (1), the output shaft of hydraulic motor (14) is connected with rotating shaft (16) through shaft coupling (15), the gear (17) be fixed on rotating shaft (16) is born play turntable bearing (18) with external tooth type and is meshed, driving is fixed on external tooth type and is born play lower rotary table bearing (18) and external tooth type and bear the rotating grinding polishing apparatus that workpiece to be machined on play top rotary table bearing (19) outer ring and clamp body rotate together, and control angularly batch (-type) rotation by PLC,
Described high pressure sealing system adopts external toothing formula to bear play top rotary table bearing (19), external toothing formula bears play lower rotary table bearing (18) outer ring respectively by bolt and top rotary table (28), lower rotary table (29) is connected, and external toothing formula is born play top rotary table bearing (19) inner ring by the flange of bolt with material loading cylinder (7) and is connected, external toothing formula is born play lower rotary table bearing (18) inner ring and is connected with the flange of workbench (30) and blanking cylinder (5) respectively by bolt, first sealing ring (20) easy to wear, second sealing ring (21) is by the first dormant bolt (22), second dormant bolt (23) and material loading cylinder (7), blanking cylinder (5) is connected, in the first sealing ring (20), second sealing ring (21) outer rotary surface and top rotary table (28), the first combined seal ring (24) is provided with between lower rotary table (29), second combined seal ring (25) and the first wear-resistant seal (26), second wear-resistant seal (27), top rotary table (28), lower rotary table (29) and upper clamp body (32), the faying face place of lower clamp body (31) is provided with the first sealing ring (33), second sealing ring (34), by upper clamp body (32), the 3rd sealing ring (35) is installed at faying face place between the workpiece to be machined (38) that lower clamp body (31) and jig main body (37) wrap up, 4th sealing ring (36), by the special first high-pressure abrasive material sealing ring (40) that tetrafluoro bronze is material, second high-pressure abrasive material sealing ring (53), first high pressure anti-wear abrasive material envelope (39) and the second high pressure anti-wear abrasive material envelope (52) are installed on blanking cylinder (5) respectively, the first interlock pushing piston (6) in material loading cylinder (7), in second interlock pushing piston (8).
Described sliding guide rail system employing is pumped hydraulic oil by hydraulic pump (1) and is controlled the first clamping cylinder (44) by the 3rd three position four-way directional control valve (51), the hydraulic circuit that second clamping cylinder (45) clamps and unclamps, four root posts (42) one end is connected with fixing top board (43), the other end is fixed on the supporting frame of workbench (30), be installed on the first clamping cylinder (44) on fixing top board (43), second clamping cylinder (45), the crossbeam (46) be combined as a whole with upper extrusion oil cylinder (9) and material loading cylinder (7) is connected by its piston rod, four root posts (42) are through the guide pin bushing (47) be welded in respectively on crossbeam (46).
2. a kind of effective constant pressure reduction batch (-type) rotary squeezing abrasive flows burnishing device according to claim 1, it is characterized in that, described turntable bearing rotary system adopts negative play rotating disk supporting to realize rotary drive, the gears meshing driven by hydraulic motor makes working speed between 0.5 rev/min to 2 revs/min, rotated by PLC control realization workpiece to be machined and angularly stop the rotation afterwards, only carry out the multi-station polishing of extrusion process, and limit extrusion process, limit rotate processing rotation grinding and polishing.
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| CN201410742611.3A CN104440414B (en) | 2014-12-07 | 2014-12-07 | A kind of constant-pressure drop batch (-type) rotary squeezing abrasive flows burnishing device |
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| CN105479319A (en) * | 2015-11-20 | 2016-04-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Automatic compound motion and finishing method and device for blades of integral turbine wheel |
| CN105710734A (en) * | 2016-04-29 | 2016-06-29 | 沈阳透平机械股份有限公司 | Circulating impeller inner flow channel polishing device and method |
| CN107336124A (en) * | 2017-08-05 | 2017-11-10 | 苏州方德锐精密机电科技有限公司 | A kind of multi-work piece Reciprocatory abrasive Flow polishing machine |
| CN107617967A (en) * | 2017-08-30 | 2018-01-23 | 浙江工业大学 | The rotatable honing fixture of chain transmission type drill point |
| CN109333175A (en) * | 2018-11-08 | 2019-02-15 | 太原理工大学 | A kind of round tube inner wall ultrasonic vibration auxiliary abrasive stream precision finishing method |
| CN109366365A (en) * | 2018-09-28 | 2019-02-22 | 西安航天发动机有限公司 | A kind of 3D printing honeycomb screen abrasive Flow finishing processing device and application method |
| CN110587467A (en) * | 2019-10-09 | 2019-12-20 | 无锡威孚马山油泵油嘴有限公司 | Plunger bushing abrasive particle oil flow hole deburring device |
| WO2021036473A1 (en) * | 2019-08-28 | 2021-03-04 | 南京星合精密智能制造研究院有限公司 | Abrasive flow treatment device employing large slope, circuitous path, and complex single channel |
| CN112496946A (en) * | 2020-11-18 | 2021-03-16 | 米宣娥 | Rotary type household rice steamer chamfering device |
| CN115213792A (en) * | 2022-07-14 | 2022-10-21 | 大连理工大学 | Polishing system, self-adaptive polishing device and polishing method for polishing outer raceway of bearing ring |
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| CN105710734A (en) * | 2016-04-29 | 2016-06-29 | 沈阳透平机械股份有限公司 | Circulating impeller inner flow channel polishing device and method |
| CN107336124A (en) * | 2017-08-05 | 2017-11-10 | 苏州方德锐精密机电科技有限公司 | A kind of multi-work piece Reciprocatory abrasive Flow polishing machine |
| CN107617967A (en) * | 2017-08-30 | 2018-01-23 | 浙江工业大学 | The rotatable honing fixture of chain transmission type drill point |
| CN109366365A (en) * | 2018-09-28 | 2019-02-22 | 西安航天发动机有限公司 | A kind of 3D printing honeycomb screen abrasive Flow finishing processing device and application method |
| CN109333175A (en) * | 2018-11-08 | 2019-02-15 | 太原理工大学 | A kind of round tube inner wall ultrasonic vibration auxiliary abrasive stream precision finishing method |
| WO2021036473A1 (en) * | 2019-08-28 | 2021-03-04 | 南京星合精密智能制造研究院有限公司 | Abrasive flow treatment device employing large slope, circuitous path, and complex single channel |
| CN110587467A (en) * | 2019-10-09 | 2019-12-20 | 无锡威孚马山油泵油嘴有限公司 | Plunger bushing abrasive particle oil flow hole deburring device |
| CN112496946A (en) * | 2020-11-18 | 2021-03-16 | 米宣娥 | Rotary type household rice steamer chamfering device |
| CN115213792A (en) * | 2022-07-14 | 2022-10-21 | 大连理工大学 | Polishing system, self-adaptive polishing device and polishing method for polishing outer raceway of bearing ring |
| CN115213792B (en) * | 2022-07-14 | 2023-11-03 | 大连理工大学 | Polishing system, self-adaptive polishing device and polishing method for polishing outer roller path of bearing ring |
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