CN104309148A - Transmission device of three-point mechanical press - Google Patents
Transmission device of three-point mechanical press Download PDFInfo
- Publication number
- CN104309148A CN104309148A CN201410483279.3A CN201410483279A CN104309148A CN 104309148 A CN104309148 A CN 104309148A CN 201410483279 A CN201410483279 A CN 201410483279A CN 104309148 A CN104309148 A CN 104309148A
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- CN
- China
- Prior art keywords
- jackshaft
- fixedly connected
- slide block
- bent axle
- gear wheel
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/10—Drives for forging presses
- B21J9/18—Drives for forging presses operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars
Abstract
The invention discloses a transmission device of a three-point mechanical press. One end of a high-speed gear shaft is fixedly connected with a flywheel; a gear wheel is meshed with a high-speed gear; the outer end of a first intermediate shaft and the outer end of a second intermediate shaft are fixedly connected with intermediate shaft end pinions respectively; two crankshaft gear wheels are fixed at the two ends of a combined crankshaft respectively; the two intermediate shaft end pinions are meshed with the crankshaft gear wheels fixed at the two ends of the combined crankshaft; the upper ends of two side connecting rods are hinged to the middle parts of two-end crankshafts respectively; the lower ends of the two side connecting rods are fixedly connected with the two ends of a slide block respectively; the upper end of the middle connecting rod is hinged to the middle part of a middle connecting shaft; the lower end of the middle connecting rod is fixedly connected with the middle part of the slide block. A three-point supporting structure is used between the combined crankshaft and the slide block, so that the slide block can still maintain synchronization after being overloaded, requirements of the three-point mechanical press on eccentric synchronization accuracy of the crankshafts are lowered, and the installing and repairing difficulty of the three-point mechanical press is reduced.
Description
Technical field
The present invention relates to a kind of punching machine, especially a kind of its length is greater than the Three-point machine tool forcing press of two point punching machine, belongs to metal forming machinery technical field.
Background technology
Automation, high efficiency punch process need to realize the automatic stamping cooked modes such as the processing of unit multistation, the processing of multimachine multistation, progressive die processing or the processing of progressive die line, need to need to arrange more station number on a punching machine, its length correspondingly and workbench length all need to exceed existing two point punching machine, but slide block width and workbench width then do not need too large.Therefore, do not need the punching machine of or larger nominal tonnage at 4, only need have sufficiently long its length and workbench length and the suitable punching machine of nominal tonnage.Prior art adopts the spacing of increase by 2 punching machine two connecting rods, thus increases point of application spacing to improve the anti-bias load function of punching machine.If but when needing the slide block more grown because presser's figure place, two connecting rod spacing spans strengthen, when the stamping press of intermediate stations is obviously greater than the stamping press on the station of both sides, the offset load resistance of slide block is poor, and in the middle of slide block, the excessive generation plastic deformation of amount of deflection may occur and cause slide block both sides precision to reduce, under this operating mode, 2 punching machines can not carry out normal stamping press.
For meeting above-mentioned special process demand, designing a kind of new Three-point machine tool forcing press and putting on work schedule.There is following problem in existing Three-point machine tool forcing press: the precision uniformity processing request 1, for three connecting rods and screw rod is very high, and three screw rod height of packing compact are not easy to realize adjusted in concert, and Adjustment precision also cannot ensure.2, the installation of three connecting rods and slide block is extremely inconvenient, and especially the adjustment of both sides, slide block bottom surface equal altitudes is difficult to reach, very inconvenient for subsequent maintenance especially.3, the synchronism of three-crankshaft and uniformity are difficult to be ensured by processing, and its mounting and adjusting difficulty is far longer than existing two point punching machine.
Summary of the invention
The object of this invention is to provide that a kind of offset load resistance is strong and slide block has enough rigidity, the Three-point machine tool driver of press that crankshaft eccentric synchronism difficulty reduces.
The present invention is achieved by the following technical programs:
A kind of Three-point machine tool driver of press, comprise fuselage, motor, electrical machine belt pulley, flywheel high speed gear shaft, the first jackshaft, the second jackshaft, gear wheel, two jackshaft termination pinions, two bent axle gear wheels, vuilt-up crankshaft, two both sides connecting rods, an intermediate connecting rod and slide blocks, motor support is on fuselage roof, electrical machine belt pulley is connected by many driving belts with flywheel, and high speed gear shaft one end is fixedly connected with flywheel, and in the middle part of high speed gear shaft, radial direction extends high gear; First jackshaft is inner to be fixedly connected with by gear wheel with second jackshaft the inner, and described gear wheel engages with high gear; First jackshaft outer end, the second jackshaft outer end are supported on fuselage two upper lateral part respectively by jackshaft bearing shell, and are fixedly connected with jackshaft termination pinion respectively; In the middle part of first jackshaft and the second jackshaft in the middle part of respectively by middle part bearings on back wallboard; Two bent axle gear wheels are separately fixed on vuilt-up crankshaft two ends, and two jackshaft termination pinions engage with two bent axle gear wheels respectively; The vuilt-up crankshaft be positioned on the downside of the first jackshaft and the second jackshaft comprises two ends bent axle and intermediate connecting shaft, bent axle inner termination in described two ends is fixedly connected with integral respectively by shaft coupling with intermediate connecting shaft two ends, bent axle outer end, two ends is supported on fuselage two upper lateral part respectively by bearing box, two both sides small ends respectively with two ends bent axle in the middle part of hinged, connecting rod lower end, two both sides is fixedly connected with the overload protection cylinder plunger upper end be fixed in slide block two ends respectively; Hinged in the middle part of intermediate connecting rod upper end and intermediate connecting shaft, intermediate connecting rod lower end is fixedly connected with the adjustment hydraulic cylinder body upper end be fixed in the middle part of slide block.
The present invention can also be realized further by following technical measures.
Aforesaid Three-point machine tool driver of press, wherein gear wheel is fixed on second jackshaft the inner, and first jackshaft the inner embeds in gear wheel, and is fixedly connected with gear wheel; Or gear wheel is fixed on first jackshaft the inner, second jackshaft the inner embeds in gear wheel, and is fixedly connected with gear wheel.
Aforesaid Three-point machine tool driver of press, wherein said two ends bent axle is inner to be supported on waist wallboard respectively by the inner bearing shell of bent axle.
Aforesaid Three-point machine tool driver of press, the fairlead of hydraulic cylinder body on the upside of slide block is wherein regulated vertically to be inserted in in the middle part of slide block, regulator solution pressure cylinder piston embeds and regulates in hydraulic cylinder body, regulate hydraulic cylinder piston rod lower end to be fixedly connected with adpting flange, be fixed on the downside of described adpting flange on the downside of slide block.
Aforesaid Three-point machine tool driver of press, wherein the upper and lower cavity of regulator solution cylinder pressure is connected with the second output terminals A mouth with the first output B mouth of three-position electromagnetic reversal valve respectively, and to be pressure oil input P mouth be all connected with the first output B mouth and the second output terminals A mouth described three-position electromagnetic reversal valve Median Function is differentially connected.
Aforesaid Three-point machine tool driver of press, wherein regulator solution pressure cylinder piston shank diameter d=√ 4Fg/3 π.
The present invention is rational in infrastructure, slide block has very high offset load resistance, has enough good rigidity, well solves punching machine in multiple site punching processing because each station unbalance stress causes unbalance loading to affect the problem of machining accuracy.Three supporting constructions that three connecting rods connect are adopted between vuilt-up crankshaft of the present invention and slide block, meet the adjusted in concert of punching machine height of packing compact, and still can keep synchronism after achieving slide block overload, also reduce Three-point machine tool forcing press for the required precision of crankshaft eccentric synchronism, reduce Three-point machine tool forcing press and install and maintenance difficulty.
Advantage and disadvantage of the present invention, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is structure diagram of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As depicted in figs. 1 and 2, the present invention includes fuselage 1, motor 2, electrical machine belt pulley 3, flywheel 4, high speed gear shaft 5, first jackshaft 6, second jackshaft 7, gear wheel 8, two jackshaft termination pinions 9, two bent axle gear wheels 10, vuilt-up crankshaft 20, two both sides connecting rods, 30, intermediate connecting rod 40 and slide block 50, motor 2 is supported on fuselage 1 top, and electrical machine belt pulley 3 is connected by many driving belts 31 with flywheel 4.High speed gear shaft 5 right-hand member is fixedly connected with flywheel 4, and in the middle part of high speed gear shaft 5, radial direction extends high gear 51, and high speed gear shaft 5 is supported on fuselage 1 top by a pair supporting bearing base 52.
The gear wheel 8 of the present embodiment is fixed on second jackshaft 7 the inner, and the disk 61 that the inner radial direction of the first jackshaft 6 is extended embeds in the pit of gear wheel 8 correspondence, and is fixedly connected with gear wheel 8.Gear wheel 8 also can be fixed on first jackshaft 6 the inner, disk the inner that second jackshaft 7 radial direction is extended embeds in the pit of gear wheel 8 correspondence, and be fixedly connected with gear wheel 8, make the first jackshaft 6 be fixedly connected with integrally with the second jackshaft 7, gear wheel engages with high gear 51 with 8.First jackshaft 6 outer end, the second jackshaft 7 outer end are supported on fuselage 1 liang of upper lateral part respectively by jackshaft bearing shell 71, and are fixedly connected with jackshaft termination pinion 9 respectively.In the middle part of first jackshaft 6 and be supported on back wallboard 11 respectively by middle part bearing 72 in the middle part of the second jackshaft 7, like this, be fixedly connected with the first jackshaft 6 integrally and the second jackshaft 7 to have 4 places and support, reduce the moment of flexure that load produces, improve the strength and stiffness of the first jackshaft 6 and the second jackshaft 7.
Two bent axle gear wheels 10 are separately fixed on vuilt-up crankshaft 20 two ends, and two jackshaft termination pinions 9 engage with two bent axle gear wheels 10 simultaneously respectively, and the present invention adopts two-stage gear drive to add one-level bel-drivenn three grades of reducing transmission structures.
Vuilt-up crankshaft 20 is positioned on the downside of the first jackshaft 6 and the second jackshaft 7, comprise two ends bent axle 201 and intermediate connecting shaft 202, for ensureing the accuracy transmitted, the inner termination of two ends bent axle 201 is fixedly connected with integral respectively by shaft coupling 203 with intermediate connecting shaft 202 two ends, two ends bent axle 201 outer end is supported on fuselage 1 liang of upper lateral part respectively by bearing box 204, and two ends bent axle 201 the inner is supported on waist wallboard 12 respectively by the inner bearing shell 205 of bent axle.Such structure can improve offset load resistance, adds spacing between big connecting rod.
Two both sides connecting rod 30 upper ends respectively with two ends bent axle 201 in the middle part of eccentric segment hinged; hinged in the middle part of intermediate connecting rod 40 upper end and intermediate connecting shaft 202; by lateral pin 301 and screw rod 302 upper end thereof in the middle part of both sides connecting rod 30; overload protection hydraulic cylinder 60 is separately positioned in slide block 50; screw rod 302 lower end is fixedly connected with overload protection cylinder plunger 601 upper end be fixed in slide block 50 two ends, and overload protection cylinder plunger 601 lower end embeds in overload protection hydraulic cylinder body 602.Once there is overload in the present invention, the hydraulic oil in overload protection hydraulic cylinder 60 cavity of resorption plays the effect of cushion pad, and protection slide block 50 is without prejudice.
Hinged in the middle part of intermediate connecting rod 40 upper end and intermediate connecting shaft 202, intermediate connecting rod 40 lower end is fixedly connected with adjustment hydraulic cylinder body 701 upper end be fixed in the middle part of slide block.The fairlead 705 of hydraulic cylinder body 701 on the upside of slide block 50 is regulated vertically to embed in the middle part of slide block 50, regulator solution pressure cylinder piston 702 embeds and regulates in hydraulic cylinder body 701, regulate hydraulic cylinder piston rod 703 lower end to be fixedly connected with adpting flange 704, be fixed on the downside of adpting flange 704 on the downside of slide block 50.After slide block 50 extended length, connecting rod spacing strengthen, if do not support in the middle of slide block 50, by increasing the amount of deflection of slide block 50, the punching precision of intermediate stations is caused to reduce.In order to improve the rigidity of slide block 50, invention increases an intermediate connecting rod 40, intermediate connecting shaft 202 is not for having eccentric multidiameter.
As shown in Figure 2, the upper and lower cavity of regulator solution cylinder pressure 70 respectively with the first output 801(B mouth of three-position electromagnetic reversal valve 80) with the second output 802(A mouth) be connected, three-position electromagnetic reversal valve 80 Median Function is pressure oil input 803(P mouth) with the first output 801(B mouth) being differentially connected of being all connected with the second output 802 (A mouth), system oil pressure is set by overflow valve 90.For the support force ensureing intermediate connecting rod is 1/3 nominal pressure, the power output making regulator solution cylinder pressure 70 is then needed to be 1/3 (Fg/3) of forcing press nominal pressure Fg, when operating oil pressure (p) is 20 ~ 30MPa, the difference of the area of regulator solution cylinder pressure 70 rodless cavity and rod chamber is rod areas, is now diameter of piston rod d=√ 4Fg/3 π.Can ensure that intermediate connecting rod 40 can bear the nominal pressure of 1/3 in slide block whole service process like this, and slide block 50 fast return after punching press completes can be made.
When regulator solution cylinder pressure 70 works, magnetic valve is in Median Function, and Hydraulic Power Transmission System is in the differential connection of P type, and rodless cavity and rod chamber all enter hydraulic oil.When regulating height of packing compact, the electromagnet YA1 of three-position electromagnetic reversal valve 80 obtains electric, hydraulic system is made to be in H type link circuit, now regulator solution cylinder pressure 70 is in quick condition, be convenient to both sides connecting rod 30 adjusted in concert height of packing compact, this, simplifies the problem of Three-point machine tool press die-filling height adjusted in concert, its normal regulating principle is the same with two-point press.During overload, send signal by pressure switch (not drawing in Fig. 2), the electromagnet YA2 of three-position electromagnetic reversal valve 80 obtains electric, and three-position electromagnetic reversal valve 80 automatically switches to the H type floating connection of left position function, and oil pressure drops to zero; When oil pressure recovers; the automatic dead electricity of electromagnet YA2 of three-position electromagnetic reversal valve 80; three-position electromagnetic reversal valve 80 is switched to P type Median Function; regulator solution cylinder pressure 70 returns to the normal duty of differential connection, so just makes regulator solution cylinder pressure 70 have the overload recovery capability same with the overload protection hydraulic cylinder 60 of both sides.
During the work of Three-point machine tool forcing press, vuilt-up crankshaft 20 rotates, movable slider 50 is with to pump by both sides connecting rod 30 and intermediate connecting rod 40, in normal operation, the overload protection hydraulic cylinder 60 of both sides enters hydraulic oil locking within the overload oil pressure range set, and now the overload protection hydraulic cylinder 60 of both sides does not participate in any motion; The regulator solution cylinder pressure 70 of centre is then in the differential connection status of three-position electromagnetic reversal valve 80 Median Function, regulator solution cylinder pressure 70 upper and lower cavity all enters hydraulic oil, now regulator solution cylinder pressure 70 is under the carrying oil pressure set, and regulates the extended or retracted participation slide block 50 of hydraulic cylinder piston rod 703 to move back and forth.When overload occurs Three-point machine tool forcing press, the oil pressure of the overload protection hydraulic cylinder 60 of both sides exceedes setting oil pressure, and the off-load of overload protection hydraulic cylinder 60 oil pressure, plays the effect of the overload protection to Three-point machine tool forcing press.After the bearing pressure of Three-point machine tool forcing press recovers, the overload protection hydraulic cylinder 60 of both sides recovers normal operating oil pressure, and hydraulic circuit is locked.And regulator solution cylinder pressure 70 pressure switch is when detecting that oil pressure is excessive, sending signal makes the electromagnet YA2 of three-position electromagnetic reversal valve 80 obtain electric, the H type that three-position electromagnetic reversal valve 80 automatically switches to right position function connects, now regulator solution cylinder pressure 70 is in off-load quick condition, plays the effect of hydraulic pressure overload equally.When pressure recover is to setting operating oil pressure, three-position electromagnetic reversal valve 80 automatically switches to the differential connection function of meta P type, and Three-point machine tool forcing press normally works.
When carrying out die-filling height of sliding block and regulating, Non-follow control makes three-position electromagnetic reversal valve 80 electromagnet YA1 obtain electric, three-position electromagnetic reversal valve 80 switches to left position function H type floating connection, and regulator solution cylinder pressure 70 does not move, and lathe height of packing compact regulates easy realization as two-point press.
More for work bit requirements in multistation and progressive die punch process, respective slide bottom surface requires longer this kind of special process, forcing press is designed to three-point support structure, slide block bottom surface so not only can be made to have very high offset load resistance, and make slide block have enough good rigidity, well solving each station in multistation processing due to unbalance loading that unbalance stress causes affects the problem of machining accuracy.And be designed to such three-point support structure, there is good solution for the adjusted in concert of height of packing compact, the synchronism of three strong point overloads.Also reduce the difficulty of Three-point machine tool forcing press for the required precision of crankshaft eccentric synchronism.
The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all in protection scope of the present invention.
Claims (6)
1. a Three-point machine tool driver of press, comprise fuselage, motor, electrical machine belt pulley, flywheel and high speed gear shaft, motor support on fuselage roof, electrical machine belt pulley is connected by many driving belts with flywheel, high speed gear shaft one end is fixedly connected with flywheel, and in the middle part of high speed gear shaft, radial direction extends high gear, it is characterized in that: also comprise the first jackshaft, the second jackshaft, gear wheel, two jackshaft termination pinions, two bent axle gear wheels, vuilt-up crankshaft, two both sides connecting rods, an intermediate connecting rod and slide blocks, first jackshaft is inner to be fixedly connected with by gear wheel with second jackshaft the inner, and described gear wheel engages with high gear, first jackshaft outer end, the second jackshaft outer end are supported on fuselage two upper lateral part respectively by jackshaft bearing shell, and are fixedly connected with jackshaft termination pinion respectively, in the middle part of first jackshaft and the second jackshaft in the middle part of respectively by middle part bearings on back wallboard, two bent axle gear wheels are separately fixed on vuilt-up crankshaft two ends, and two jackshaft termination pinions engage with two bent axle gear wheels respectively, the vuilt-up crankshaft be positioned on the downside of the first jackshaft and the second jackshaft comprises two ends bent axle and intermediate connecting shaft, bent axle inner termination in described two ends is fixedly connected with integral respectively by shaft coupling with intermediate connecting shaft two ends, bent axle outer end, two ends is supported on fuselage two upper lateral part respectively by bearing box, two both sides small ends respectively with two ends bent axle in the middle part of hinged, intermediate connecting rod upper end and intermediate connecting shaft hinged, connecting rod lower end, two both sides is fixedly connected with the overload protection cylinder plunger upper end be fixed in slide block two ends respectively, intermediate connecting rod lower end is fixedly connected with the adjustment hydraulic cylinder body upper end be fixed in the middle part of slide block.
2. Three-point machine tool driver of press as claimed in claim 1, is characterized in that: gear wheel is fixed on second jackshaft the inner, and first jackshaft the inner embeds in gear wheel, and is fixedly connected with gear wheel; Or gear wheel is fixed on first jackshaft the inner, second jackshaft the inner embeds in gear wheel, and is fixedly connected with gear wheel.
3. Three-point machine tool driver of press as claimed in claim 1, is characterized in that: described two ends bent axle is inner to be supported on waist wallboard respectively by the inner bearing shell of bent axle.
4. Three-point machine tool driver of press as claimed in claim 1, it is characterized in that: regulate the fairlead of hydraulic cylinder body on the upside of slide block to be vertically inserted in in the middle part of slide block, regulator solution pressure cylinder piston embeds and regulates in hydraulic cylinder body, regulate hydraulic cylinder piston rod lower end to be fixedly connected with adpting flange, be fixed on the downside of described adpting flange on the downside of slide block.
5. Three-point machine tool driver of press as claimed in claim 1, it is characterized in that: the upper and lower cavity of regulator solution cylinder pressure is connected with the second output terminals A mouth with the first output B mouth of three-position electromagnetic reversal valve respectively, and described three-position electromagnetic reversal valve Median Function is the differential connection status that pressure oil input P mouth is all connected with the second output terminals A mouth with the first output B mouth.
6. Three-point machine tool driver of press as claimed in claim 4, is characterized in that: the diameter of piston rod d=√ 4Fg/3 π of regulator solution cylinder pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410483279.3A CN104309148B (en) | 2014-09-22 | 2014-09-22 | Three-point machine tool driver of press |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410483279.3A CN104309148B (en) | 2014-09-22 | 2014-09-22 | Three-point machine tool driver of press |
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| CN104309148A true CN104309148A (en) | 2015-01-28 |
| CN104309148B CN104309148B (en) | 2016-04-20 |
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| CN201410483279.3A Active CN104309148B (en) | 2014-09-22 | 2014-09-22 | Three-point machine tool driver of press |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106891561A (en) * | 2017-04-28 | 2017-06-27 | 扬力集团股份有限公司 | A kind of four point pressure machines for processing air-conditioner fin |
| CN106926495A (en) * | 2017-04-18 | 2017-07-07 | 苏州蓝王机床工具科技有限公司 | A kind of two-point press |
| CN112388769A (en) * | 2020-11-13 | 2021-02-23 | 澳莆(上海)环保科技有限公司 | Bamboo strip flat pressing splicing auxiliary device |
| CN112792250A (en) * | 2021-04-02 | 2021-05-14 | 浙江易锻精密机械有限公司 | Multi-station automatic feeding system of punch press |
| CN113426889A (en) * | 2021-07-06 | 2021-09-24 | 淮安市东旭达五金粘胶制品有限公司 | Mobile phone steel sheet stamping device convenient to clearance waste material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112792250A (en) * | 2021-04-02 | 2021-05-14 | 浙江易锻精密机械有限公司 | Multi-station automatic feeding system of punch press |
| CN113426889A (en) * | 2021-07-06 | 2021-09-24 | 淮安市东旭达五金粘胶制品有限公司 | Mobile phone steel sheet stamping device convenient to clearance waste material |
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| CN104309148B (en) | 2016-04-20 |
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Effective date of registration: 20190315 Address after: 110021 No. 25 Sandong Road, Shenxi, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee after: Ward Precision Machine (Shenyang) Co., Ltd. Address before: 212311 Dicheng Industrial Park, Danyang City, Zhenjiang City, Jiangsu Province Patentee before: World heavy machine (Chinese) Co. Ltd. |