CN110280634A - Crank screw rod composite drive machine for press-bending metal sheet with multiple-working mode - Google Patents
Crank screw rod composite drive machine for press-bending metal sheet with multiple-working mode Download PDFInfo
- Publication number
- CN110280634A CN110280634A CN201910661823.1A CN201910661823A CN110280634A CN 110280634 A CN110280634 A CN 110280634A CN 201910661823 A CN201910661823 A CN 201910661823A CN 110280634 A CN110280634 A CN 110280634A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- crank
- sliding block
- driving
- rack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005452 bending Methods 0.000 title claims abstract description 57
- 239000002184 metal Substances 0.000 title claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 230000033001 locomotion Effects 0.000 claims description 46
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 230000008450 motivation Effects 0.000 claims description 2
- 241000237858 Gastropoda Species 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
- B21D5/0227—Length adjustment of the die
Abstract
The invention discloses a kind of crank screw rod composite drive machine for press-bending metal sheet with multiple-working mode, the upper die and lower die being connected including rack, top shoe opposite to each other up and down and sliding block and respectively with upper and lower sliding block for cooperating bending, it is connected with the upper drive mechanism for driving top shoe to move on top shoe, symmetrically connects that there are two the lower drive mechanisms for driving sliding block to move on sliding block；Upper drive mechanism includes the upper Power Component being located in rack, by 2 nuts being symmetrically disposed in rack of upper Power Component driving rotation, and the screw rod connecting with each nut thread pair, and screw rod is fixedly connected with top shoe；Lower drive mechanism includes the lower Power Component being located in rack, the lower crank driven by lower Power Component, and the lower link connecting with lower crank revolute pair, and lower link is hinged with sliding block.The present invention has the advantages that heavy duty, high-precision, driving motor power are small, power utilization is high low with manufacturing cost etc..
Description
Technical field
The present invention relates to Plate Bending Machine more particularly to a kind of crank screw rod composite drive gold with multiple-working mode
Belong to Plate Bending Machine.
Background technique
Numerical control bender is that sheet metal manufacture field is most important, most basic equipment, energy-saving and environmental protection, high speed, it is high-precision,
Digitlization and intelligence are following development trends.The driving method of numerical control bender has hydraulic-driven and mechanical electric servo to drive
Dynamic, at present mainly based on hydraulic driving mode, but mechanical electric servo is following development trend.
The advantages of hydraulic-driven is large-tonnage, it is easy to accomplish the Bending Processing of large format, slab；The shortcomings that hydraulic-driven, has
It is following: 1, noise big, energy consumption is high, hydraulic oil seepage and pollution environment；2, higher cost, because of hydraulic cylinder, valve group, liquid
The high precision parts higher cost such as press pump, wherein valve group, the high-end market of hydraulic pump part are almost completely dependent on import, cost
It is high；3, precision is not high, and there are inborn disadvantage, position poor controllabilities for the control of hydraulic system position precision；4, the service life is low, component
Abrasion, hydraulic circuit pollution are all easy to generate adverse effect to hydraulic system stability；5, sliding block movement impact is big, not gently；
6, it is affected by factors such as the temperature of environment, humidity, dusts；7, motion control is complicated.
Mechanical electric servo can solve the deficiency of above-mentioned hydraulic driving mode, but since there are skills for mechanical electric servo-drive mode
Art bottleneck is usually no more than 50 tons at present only in small tonnage field using more.And the mechanical full electric servo of current small tonnage
The driving method of bending is as depicted in figs. 1 and 2, mostly uses heavily loaded ball-screw driving method greatly, mainly there is servo motor a, same
The part such as V belt translation b, ball-screw-transmission c, sliding block d, workbench e is walked to form.Wherein servo motor is fixed in rack, ball
Lead screw is hinged with rack, and sliding block connect with housing slide and can slide along rack up and down direction, and workbench is fixed in rack.Together
Step V belt translation is made of three small pulley, synchronous belt, big belt wheel parts, is play a part of to slow down, is driven.Sliding block passes through ball-screw
Transmission is driven, and servo motor drives lead screw to rotate by synchronous belt, and sliding block is real under the driving of ball-screw-transmission pair
Now move up and down.Sliding block d moves up and down relative to workbench e, and upper mold f is installed on sliding block, and lower die g is installed on workbench,
The Bending Processing of plate h can be realized.Sliding block is symmetrically driven using two lead screws in left and right, and one side load is big, and rigidity is high, another
Aspect can realize that the depth of parallelism is micro- by the direction rotation of the motor of left and right two when there is parallelism error between upper and lower mould
It adjusts.
The above-mentioned mechanical digital controlled servo bending-machine driven using ball-screw, advantage simple, machinery driving efficiency for structure
Height, speed is fast, precision is high, effectively overcomes hydraulicdriven problems simultaneously；Disadvantage has the following: 1, it is at high cost, it is high
Precision, heavily loaded ball-screw rely on substantially import, expensive；2, high to the processing and manufacturing precision of lathe；3, it is suitable only for small
Tonnage bending machine；4, power utilization is low, and required driving motor power is big, at high cost；5, lead screw is easy to wear, damage.
Wherein power utilization, consumed power is determined servo motor by load in actual use, can be incited somebody to action
The power and motor consumed in actual use ratio between attainable maximum power index (or rated power)
As power utilization.Under normal circumstances, during bending machine carries out sheet metal bending, three action phases are successively undergone: 1, fast
Next stage, sliding block are moved downward from top dead-centre, until upper mold touches plate, this stage speed quickly, loads very little；General speed
For degree in the range of 150mm/s~200mm/s, load is exactly the gravity for overcoming sliding block substantially, and sliding block gravity is usually no more than folding
The 1/50 of bender nominal bending power, therefore load very little；The stage is typical high speed, low-load；2, advanced section of work, bending machine
Bending sheets are typical low speed, heavy load stage, and speed is about in 20mm/s or so, the 1/10 of about fast lower speed；3, it returns
In the journey stage, after the completion of sheet metal bending, sliding block is run up, and it is identical as the fast next stage to be back to top dead-centre, speed and load, high
Speed, low-load.
It can be seen from the above, the operating condition of bending machine is typical speed change, varying load operating condition.Due to the transmission of ball-screw-transmission
Than fixation, maximum speed n is reached in fast next stage servo motormax, but peak torque MmaxReach far away, rule of thumb counts
According to being typically only the 1/50 of peak torque, load directly can be equal to the output torque of motor, then being equivalent to lower rank fastly
The power consumed required for section motor are as follows:And at advanced section of work, motor reaches
Peak torque Mmax, but rule of thumb the revolving speed of data motor at this time is only maximum speed nmax1/10, mainly consider peace
The work speed of total factor, bending machine is usually lower, power needed for this stage motor:
It is above-mentioned it is found that drive system should meet maximum speed requirement in the fast lower and backhaul stage, and it is advanced in work simultaneously
Section needs to meet the requirement of peak torque；So under the premise of transmission ratio is fixed, peak power: Pmax=nmax×Mmax.Both institute
The driving motor power needed is very big, even if in actual use, motor does not use highest peak power, causes motor
Power do not applied completely, i.e., power utilization is low.It is with 35 tons of common currently on the market mechanical electric servo bending machines
Example descend speed and return speed to be generally 200mm/s fastly, and nominal bending power is 350kN, for and meanwhile meet maximum speed and most
The requirement of big bending power, it usually needs use 2 7.5kW servo motors, the conventional of existing market configures, and practical work process
In, for the power of two servo motor actual consumptions substantially in 1kw~2kW or so, the utilization rate of power is very low.
It would therefore be highly desirable to solve the above problems.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of suitable large-tonnage and there is heavy duty, high-precision, low energy consumption, drive
Dynamic power of motor is small, power utilization is high, the fast advantages such as low with manufacturing cost of speed, while utilizing the non-linear fortune of link mechanism
The crank spiral shell with multiple-working mode of the latching characteristics of the latching characteristics and screw thread auxiliary driving of dynamic characteristic and specific position
Bar composite drive machine for press-bending metal sheet.
Technical solution: in order to achieve the above object, the invention discloses a kind of, the crank screw rod with multiple-working mode is multiple
Close driving machine for press-bending metal sheet, including rack, it is upper and lower it is opposed can along rack move up and down top shoe and sliding block and point
The upper die and lower die not being connected with upper and lower sliding block for cooperating bending are connected with for driving top shoe to transport on the top shoe
Dynamic upper drive mechanism, symmetrically connects that there are two the lower drive mechanisms for driving sliding block to move on the sliding block；
The upper drive mechanism includes upper Power Component in the rack, is symmetrically disposed on by 2 of upper Power Component driving rotation
Nut in rack, and the screw rod being connect with each nut thread pair, and screw rod is fixedly connected with top shoe；Upper Power Component is defeated
Power drive screw rod rotates out, and top shoe is driven to move up and down；The lower drive mechanism includes the lower power packages in rack
Part, the lower crank driven by lower Power Component, and the lower link being connect with lower crank revolute pair, and lower link and sliding block phase
Hingedly；Lower Power Component output power driving lower crank rotation, drives sliding block to move up and down by lower link.
Wherein, the upper Power Component includes the upper driving motor being located in rack, is located in upper driving motor output shaft
Small pulley, the directive wheel being symmetrically set in rack, the big belt wheel that is coaxially connected with nut and after directive wheel is oriented to
The synchronous belt being wound around on small pulley and big belt wheel.
Preferably, the lower Power Component include lower driving motor in the rack and with lower driving motor output shaft
The lower synchronizing shaft connected by V belt translation, the lower synchronizing shaft and lower crank are coaxially disposed, and lower crank can be driven to rotate.
Furthermore the parallel misalignment of upper die and lower die is adjusted in 2 lower driving motor asynchronous operations being symmetrical set.
Further, the lower link is the link mechanism of adjustable in length, which includes support, is located in support
And the two axial ends worm screw being hinged with support, the worm gear that is meshed in support with worm screw and being connected through a screw thread is threaded through
Upper screw rod and lower screw rod on worm gear, and upper and lower screw rod is pierced by support；A shaft end for worm screw is connected with motor, electric motor starting,
Worm Wheel System is driven, so that driving upper screw rod and lower screw rod to move up and down along worm gear realizes that length is adjustable；In the worm gear
Equipped with the upper screw thread matched with upper screw rod and the lower screw thread matched with lower screw rod, the thread pitch of upper screw thread and lower screw thread is not
Deng；The outer cylinder of the upper screw rod and lower screw rod is set there are two symmetrical plane, the corresponding position of support offer with
Upper and lower screw rod is adapted the through-hole for constituting prismatic pair.
Preferably, the nut is equipped with clearance eliminating mechanism, which includes being threaded through together with nut
Briquetting on screw rod, several counterbores uniformly opened up along briquetting circumferencial direction, across the fixed guide rod of counterbore and nut and
It is set in guide rod upper spring, there is a guide rod step surface on the guide rod, one end of spring is connected to guide rod step surface, and the other end supports
It is connected to counterbore step surface, and forms prefabricating load.
Furthermore the screw thread of the nut is equipped with the taper that the inclination angle for reducing stress concentration is a.
Further, several ditches that are circumferentially disposed and extending in the axial direction are opened up on the screw thread of the nut
Slot.
Preferably, the movement travel of the screw rod is greater than the movement travel of lower crank, and screw rod has the lead of self-locking performance,
Upper drive mechanism drives top shoe to realize high speed, underloading, inoperative stroke motion, and it is low that lower drive mechanism drives sliding block to realize
Speed, heavy duty, work are into stroke motion.
Preferably, the movement travel of the screw rod is less than the movement travel of lower crank, and screw rod has the lead of self-locking performance,
Upper drive mechanism drive top shoe realize low speed, heavy duty, work into stroke motion, lower drive mechanism drive sliding block realize high speed,
Underloading, inoperative stroke motion.
The utility model has the advantages that compared with prior art, the present invention has following remarkable advantage:
(1), the present invention makes full use of the nonlinear motion characteristic of link mechanism and the latching characteristics of specific position, also advantageous
It is real using two independent driving mechanisms according to the actual condition feature of numerical control bender with the latching characteristics of screw thread auxiliary driving
Existing bending machine it is fast under, work acts into return；It wherein realizes fast lower with quick, low-load, the driving mechanism of big stroke and returns
Journey movement；Using at a slow speed, small stroke, heavy duty driving mechanism realize work into bending, effectively increase performance, reduce cost,
It realizes high-speed overload, has to pushing numerical control bender to develop from traditional hydraulic driving mode to mechanical electric servo-drive mode
Significance；
(2), because of the nonlinear motion characteristic of link mechanism, in driving motor uniform rotation, connecting rod in the present invention
Mechanism on it, the speed of lower dead point position it is lower, and middle position speed is higher, movement is gentle, without impact.
(3), in the present invention using quickly big stroke driving mechanism realize it is fast it is lower acted with return, use at a slow speed small stroke and
The driving mechanism for having both bigger reinforcement effect realizes that work precession is made, and upper and lower two driving mechanisms, interoperation can be substantially improved and watch
The power utilization of motor is taken, to realize heavily loaded large-tonnage bending machine, overcomes the technical bottleneck in industry；
(4), smaller drive can be used in power utilization of the present invention because servo motor is substantially improved, the bending machine with tonnage
Dynamic motor is used the parts such as common crank and connecting rod instead, is effectively reduced without expensive heavy duty, high-precision ball-screw
Cost of manufacture, and non-maintaining, high reliablity；
(5), the present invention can respectively drive upper drive mechanism and lower drive mechanism, the two is matched according to different process requirements
Conjunction movement, realizes a variety of cooked modes, and combination is flexible；
(6), lower link of the invention may be configured as the link mechanism of adjustable in length, when replacing different molds, can lead to
It crosses adjustment length of connecting rod and realizes the spacing for adjusting upper and lower sliding block, adaptation range is big and Adjustment precision is high；
(7), upper die and lower die are adjusted in the lower driving motor asynchronous operation being symmetrical set in the present invention using 2
Parallel misalignment keeps sliding block left and right sides not parallel, it can be achieved that the bending with taper.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of bending machine in the prior art；
Fig. 2 is sheet metal bending schematic diagram in the prior art；
Fig. 3 is the principle of the present invention schematic diagram；
Fig. 4 is the schematic illustration of upper Power Component in the present invention；
Fig. 5 is structural schematic diagram one of the invention；
Fig. 6 is structural schematic diagram two of the invention；
Fig. 7 is the structural schematic diagram removed under rack status in the present invention；
Fig. 8 is the structural schematic diagram of link mechanism in the present invention；
Fig. 9 is the connection schematic diagram of worm and gear in link mechanism of the present invention；
Figure 10 is the connection schematic diagram of worm gear, upper screw rod and lower screw rod in link mechanism of the present invention；
Figure 11 is the end view of upper screw rod and lower screw rod in link mechanism of the present invention；
Figure 12 is the structural schematic diagram of intermediate gap eliminating machine of the present invention；
Figure 13 is the diagrammatic cross-section of intermediate gap eliminating machine of the present invention；
Figure 14 is nut taper schematic diagram in the present invention；
Figure 15 is groove schematic diagram on nut in the present invention；
Figure 16 (a)~16 (c) is the movement schematic diagram of fast next stage in the embodiment of the present invention 1；
The movement schematic diagram that Figure 17 (a)~17 (b) is advanced section of work in the embodiment of the present invention 1；
Figure 18 is the nonlinear motion characteristic schematic diagram of link mechanism in the present invention；
Figure 19 is the calculating schematic diagram of the bending load of link mechanism in the present invention.
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 3 and Figure 4, a kind of crank screw rod composite drive sheet metal folding with multiple-working mode of the present invention
Bender, including rack 1, top shoe 2, sliding block 3, upper mold 4 and lower die 5.Top shoe 2 and about 3 sliding block are opposite disposed, can edge
Rack 1 moves up and down, and the upper guide groove 30 for being oriented to sliding, corresponding position in rack are symmetrically set on top shoe 2
It installs and is inserted into the upper guide pad 31 that upper guide groove 30 can be slided up and down along upper guide groove 30；It is symmetrical set on sliding block 3
There is the lower guide groove 32 for being oriented to sliding, opposite position can be along lower guide groove 32 equipped with guide groove 32 under being inserted into rack
The lower guide pad 33 of lower slider.Upper mold 4 and lower die 5, which cooperate, realizes bending, and wherein upper mold 4 is fixed on top shoe 2, can be with
Top shoe 2 move up and down along rack, lower die 5 is fixed on sliding block 3, can move up and down along sliding block 3 along rack.
As shown in figure 5 and figure 7, the upper drive mechanism for driving top shoe to move, upper driving machine are connected on top shoe 2
Structure includes that 7,2 upper Power Component, nut 6 and screw rod nuts 6 are symmetrical set in rack 1, by the same upper power packages
Part driving rotates, and screw thread pair is connected with a screw rod 7 on each nut 6, and screw rod 7 is fixedly connected with top shoe 2.Wherein upper power packages
Part includes the upper driving motor 10 being located in rack, the small pulley 11 in upper driving motor output shaft, is symmetrically set to
Directive wheel 12 in rack, the big belt wheel 13 being coaxially connected with nut 6 and be wound around after the guiding of directive wheel 12 small pulley and
Synchronous belt 14 in big belt wheel.Big belt wheel 13 is threaded through on screw rod 7, and screw rod 7 can be driven to rotate along nut 6.Upper driving motor
10 startings, drive small pulley 11 to rotate, and drive big belt wheel 13 to rotate via directive wheel 12 and by synchronous belt 14, screw rod 7 and spiral shell
Mother 6 constitutes screw-driven pair, and the rotation of nut 6 drives top shoe 2 to move up and down along rack.As shown in Figure 12 and Figure 13, this hair
Bright nut 6 is equipped with clearance eliminating mechanism, which includes briquetting 25, guide rod 27 and spring 28.Briquetting 25 with
Nut 6 is threaded through together on screw rod 7, and the inner hole of briquetting is provided with the screw thread of screw rod cooperation, and the screw pitch of briquetting 25 and screw thread rotation
It is identical as nut 6 to turn direction.Several counterbores 26 are uniformly offered along 25 circumferencial direction of briquetting, there is a guide rod platform on guide rod 27
Terrace, the guide rod 27 pass through counterbore 26 and are fixedly connected with nut 6, and movement is constituted between the outside wall surface of guide rod and the wall surface of the hole of briquetting
Pair play the guiding role.Spring 28 is set on guide rod 27, and one end of spring 28 is connected to guide rod step surface, and the other end is connected to
Counterbore step surface, and prefabricating load is formed, and then achieve the purpose that gap is eliminated, spring 28 preferably uses butterfly spring.Because usually
Only a few circle screw threads bear load when screw thread auxiliary driving, easily cause the stress of screw thread to be concentrated and destroy, and there is very big quality peace
Full hidden danger is equipped with the taper that the inclination angle for reducing stress concentration is a on the screw thread of nut 6 as shown in figure 14, in the present invention,
The rigidity of screw thread engagement can be effectively reduced, the circle number of stress screw thread is increased, and then achievees the purpose that reducing stress concentrates.Screw thread passes
The main restricting factor of dynamic limitation speed and load-carrying ability is lubrication and heat dissipation problem, therefore as shown in figure 15, and the present invention is in spiral shell
The screw thread of mother 6 opens up several grooves 29 that are circumferentially disposed and extending in the axial direction, and by groove 29, lubricating oil is easy
Threaded interior is flowed into, convenient for lubrication and heat dissipation, and on the stiffness and strength of screw thread auxiliary driving without influence.
As shown in Figure 6 and Figure 7, for driving sliding block to move there are two symmetrically being connected on sliding block 3 of the present invention
Lower drive mechanism；Lower drive mechanism includes lower Power Component, lower crank 8 and lower link 9, and lower crank 8 is driven by lower Power Component,
Revolute pair is connected with lower link 9 on lower crank 8, and lower link 9 is hinged with sliding block 3.Wherein descending Power Component includes being located at machine
Lower driving motor 15 on frame and the lower synchronizing shaft 16 being connect with lower driving motor output shaft by V belt translation, the lower synchronizing shaft
16 are coaxially disposed with lower crank 8, and lower crank 8 can be driven to rotate.V belt translation includes being connected with lower driving motor output shaft
Driving wheel, the driven wheel on lower synchronizing shaft 16 and it is wound around the synchronous belt that transmission is realized on driving wheel and driven wheel.Under
Synchronizing shaft 16 is threaded through on lower crank 8, and is hinged with rack.Lower driving motor 15 starts, and drives lower synchronize by V belt translation
Axis 16 rotates, while the lower crank 8 of coaxial arrangement being driven to rotate, and drives sliding block 3 to move up and down along rack by lower link 9.
The depth of parallelism that upper die and lower die are adjusted using 2 lower driving motor asynchronous operations being symmetrical set in the present invention is inclined
Difference keeps sliding block left and right sides not parallel, it can be achieved that the bending with taper.
Lower link 9 of the invention is the link mechanism of adjustable in length, as shown in Fig. 8, Fig. 9 and Figure 10, the link mechanism
Including support 17, worm screw 18, worm gear 19, upper screw rod 20, lower screw rod 21 and motor 22.Motor 22 and a shaft end for worm screw 18 are fixed
Connection, for driving worm screw 18 to rotate.Worm screw 18 is located in support 17 and two axial ends are hinged with support 17, and worm gear 19 is located at
In support 17, it is meshed with worm screw and constitutes Worm Wheel System pair.Be equipped in worm gear 19 the upper screw thread matched with upper screw rod and
The thread pitch of the lower screw thread matched with lower screw rod, upper screw thread and lower screw thread differs.Upper screw rod 20 and lower screw rod 21 pass through spiral shell
Line connection is threaded through on worm gear 19, and upper and lower screw rod is pierced by support 17, the upper screw rod 20 of stretching and lower screw rod 21 for hinged
Other components.Motor 22 starts, and drives Worm Wheel System, so that upper screw rod 20 and lower screw rod 21 be driven to move down along worm gear
It is dynamic to realize that link mechanism length is adjustable.The screw pitch of upper screw thread is P1, and the screw pitch of lower screw thread is P2, and worm gear rotates a circle, connecting rod knot
The achievable length adjustment amount Δ=P1-P2 of structure, effectively increases the Adjustment precision of connecting rod.As shown in figure 11, upper 20 He of screw rod
The outer cylinder of lower screw rod 21 is set there are two symmetrical plane 23, is offered and upper and lower screw rod phase in the corresponding position of support
Adaptation constitutes the through-hole 24 of prismatic pair, and the face for matching guiding with plane 23 on the through-hole 24 is also plane, matches with flank
The face of conjunction can be flank, other faces that can have guiding role also can be selected.
The movement travel of screw rod 7 of the present invention is greater than the movement travel of lower crank 8, and it is high that upper drive mechanism drives top shoe to realize
The big stroke motion of speed, lower drive mechanism drive sliding block to realize the small stroke motion of low speed.The operating condition of bending machine be typical speed change,
Varying load operating condition, fast lower and return stage are the motion stage of high speed, the big stroke of low-load, advanced section of work be low speed, bear greatly
Carry the motion stage of small stroke.Therefore the present invention drives top shoe to realize fast lower and return stage, lower drive using upper drive mechanism
Motivation structure drives sliding block to realize advanced section of work.As shown in Figure 16 (a), top shoe 2 is located at top dead-centre, and sliding block 3 is located at lower dead
Point, i.e. lower crank 8 and lower link 9 are conllinear and are overlapped.The fast next stage of the invention, upper driving motor 10 opened as shown in Figure 16 (b)
It is dynamic, it drives small pulley 11 to rotate, drives big belt wheel 13 to rotate via directive wheel 12 and by synchronous belt 14, nut 6 rotates its turn
Speed is ω 1, is driven by screw thread pair and drives 2 fast downlink of top shoe.Reaching the i.e. fast next stage of position shown in Figure 16 (c) terminates,
Screw thread auxiliary driving has latching characteristics, and upper drive mechanism is in self-locking position at this time, i.e., upper driving motor 10 only needs provide very
Small driving torque, or even driving torque is not provided, very big bending load can be born.Also because of the movement travel of screw rod 7
Greatly, it can be achieved that the fast downlink of fast next stage, the big effect of stroke.Screw thread auxiliary driving is normally due to the heat that friction generates shows
That is, there is limitation to F ' × V, wherein F ' is bearing load, and V is the speed of service.Therefore the present invention makes full use of this characteristic,
Under fast, in the return stage, it can be achieved that quickly operation, and when needing advanced section of work of very big bearing capacity, screw thread pair is static not
It is dynamic, load is born using the latching characteristics of itself；The present invention takes full advantage of top shoe and is in top dead-centre and bottom dead centre two
When position, mechanism is in self-locking position.As shown in figure 18, in addition, the typical nonlinear motion characteristic of link mechanism, dynamic under fast
At the beginning and end of work, speed is low, impacts small.As shown in Figure 17 (a), the lower driving motor 15 of the left and right sides is driven by V belt translation
Dynamic lower crank 8 rotates, and the revolving speed of two lower cranks 8 is ω 2 and ω 3, and then sliding block is driven to move upwards.When upper and lower mould goes out
When existing parallel misalignment, the lower driving motor 15 of the left and right sides is reversed or equidirectional different rotating speeds are finely adjusted the depth of parallelism.
As shown in Figure 17 (b), sliding block reaches top dead-centre, and when different to bending plate thickness, when bending angle difference, work is into terminating also not
One is positioned at top dead-centre, may be alternatively located at other points, and bending process is completed.Because lower crank length is smaller, have biggish
Reinforcement effect, and speed is slow, meets working condition requirement, bending LOAD FOR formula is M=F × R × sin (alpha+beta), such as Figure 19 institute
Show, wherein M is driving torque, and F is bending load, and R is crank length, and α is the angle of lower crank and vertical direction, and β is lower company
The angle of bar and vertical direction, as shown from the above formula, crank length is shorter instantly, and reinforcement effect is bigger.Spiral shell in the present invention
The length of bar will affect stroke size, and the lead of screw rod and the speed driven screw turns influence the speed of top shoe operation；
The lead selection of screw rod can form self-locking lead.
Advanced section of fast next stage and work can be combined in the present invention, realize different cooked modes, not according to operating condition
With different operating modes is taken, achievees the effect that be lightly loaded quick, heavy duty at a slow speed, promote driving motor power utilization.
Quick mode: only with the fast next stage, i.e., small due to loading when carrying out light sheet bending, sliding block is located at upper dead
Point only drives top shoe up and down motion that Bending Processing can be completed by upper drive mechanism, and speed is fast；
Heavily loaded mode: advanced section of work after the first fast next stage, i.e., first carrying out fast lower movement, and top shoe reaches after bottom dead center, under
Sliding block starts movement and carries out bending；
Mixed mode: fast next stage and advanced section of work simultaneously operation
Small opening bending mode: top shoe rests on bottom dead centre, or only acts slight distance only up, and sliding block is in small row
Linear motion carries out bending within the scope of journey, which is suitable only for small size, simple part carries out bending, high-efficient.
Embodiment 2
The structure of embodiment 2 is identical as the structure of embodiment 1, and difference place is: the movement travel of the screw rod 7 is less than
The movement travel of lower crank 8, upper drive mechanism drive top shoe to realize the small stroke motion of low speed, and lower drive mechanism drives sliding block
Realize high speed and large stroke movement.The operating condition of bending machine is typical speed change, varying load operating condition, and the fast lower and return stage is height
Speed, the big stroke of low-load motion stage, advanced section of work for low speed, the small stroke of heavy load motion stage.Therefore the present invention adopts
Sliding block is driven to realize the fast lower and return stage with lower drive mechanism, upper drive mechanism drives top shoe to realize advanced section of work.
Claims (10)
1. a kind of crank screw rod composite drive machine for press-bending metal sheet with multiple-working mode, it is characterised in that: including machine
Frame (1), the upper and lower opposed use that can be connected along the top shoe (2) and sliding block (3) that rack moves up and down and respectively with upper and lower sliding block
The upper driving for driving top shoe movement is connected in the upper mold (4) and lower die (5) of cooperation bending, on the top shoe (2)
Mechanism, symmetrically connects that there are two the lower drive mechanisms for driving sliding block to move on the sliding block (3)；The upper drive
Motivation structure includes upper Power Component on rack (1), by 2 of upper Power Component driving rotation is symmetrically disposed on rack
(1) nut (6) on, and the screw rod (7) being connect with each nut thread pair, and screw rod (7) is fixedly connected with top shoe (2)；
Upper Power Component output power driving screw rod (7) rotation, drives top shoe (2) to move up and down；The lower drive mechanism includes position
It is connect in the lower Power Component on rack (1), the lower crank (8) that is driven by lower Power Component, and with lower crank (8) revolute pair
Lower link (9), and lower link (9) is hinged with sliding block (3)；Lower Power Component output power driving lower crank (8) rotation,
Sliding block (3) are driven to move up and down by lower link (9).
2. the crank screw rod composite drive machine for press-bending metal sheet according to claim 1 with multiple-working mode,
Be characterized in that: the upper Power Component includes the upper driving motor (10) being located in rack, is located in upper driving motor output shaft
Small pulley (11), be symmetrically set in rack directive wheel (12), with nut (6) coaxially connected big belt wheel (13) and
The synchronous belt (14) being wound around after directive wheel (12) guiding on small pulley and big belt wheel.
3. the crank screw rod composite drive machine for press-bending metal sheet according to claim 1 with multiple-working mode,
Be characterized in that: the lower Power Component includes the lower driving motor (15) in rack and leads to lower driving motor output shaft
The lower synchronizing shaft (16) of V belt translation connection is crossed, the lower synchronizing shaft (16) and lower crank (8) are coaxially disposed, and can drive lower crank
(8) it rotates.
4. the crank screw rod composite drive machine for press-bending metal sheet according to claim 3 with multiple-working mode,
Be characterized in that: the parallel misalignment of upper die and lower die is adjusted in 2 lower driving motor (15) asynchronous operations being symmetrical set.
5. the crank screw rod composite drive machine for press-bending metal sheet according to claim 1 with multiple-working mode,
Be characterized in that: the lower link (9) is the link mechanism of adjustable in length, which includes support (17), is located at support
Worm screw (18) that interior and two axial ends are hinged with support, the worm gear (19) being meshed in support with worm screw and pass through screw thread
The upper screw rod (20) and lower screw rod (21) being threaded through on worm gear are connected, and upper and lower screw rod is pierced by support；A shaft end for worm screw connects
It is connected to motor (22), motor (22) starting drives Worm Wheel System, to drive upper screw rod (20) and lower screw rod (21) along snail
Wheel, which moves up and down, realizes that length is adjustable；It is equipped with the upper screw thread matched with upper screw rod in the worm gear (18) and matches with lower screw rod
The thread pitch of the lower screw thread closed, upper screw thread and lower screw thread differs；The outer cylinder of the upper screw rod (20) and lower screw rod (21) is set
There are two symmetrical planes (23), offer in the corresponding position of support and are adapted composition prismatic pair with upper and lower screw rod
Through-hole (24).
6. the crank screw rod composite drive machine for press-bending metal sheet according to claim 1 with multiple-working mode,
Be characterized in that: the nut (6) is equipped with clearance eliminating mechanism, which includes being threaded through together with nut (6)
Briquetting (25) on screw rod (7), several counterbores (26) uniformly opened up along briquetting circumferencial direction are fixed across counterbore and nut
Guide rod (27) and be set in guide rod upper spring (28), on the guide rod have a guide rod step surface, one end of spring (28) is supported
It is connected to guide rod step surface, the other end is connected to counterbore step surface, and forms prefabricating load.
7. the crank screw rod composite drive machine for press-bending metal sheet according to claim 1 with multiple-working mode,
Be characterized in that: the screw thread of the nut (6) is equipped with the taper that the inclination angle for reducing stress concentration is a.
8. the crank screw rod composite drive machine for press-bending metal sheet according to claim 1 with multiple-working mode,
It is characterized in that: opening up several grooves that are circumferentially disposed and extending in the axial direction on the screw thread of the nut (6)
(29)。
9. the crank screw rod composite drive machine for press-bending metal sheet according to claim 1 with multiple-working mode,
Be characterized in that: the movement travel of the screw rod (7) is greater than the movement travel of lower crank (8), and screw rod (7) has leading for self-locking performance
Journey, upper drive mechanism drive top shoe to realize that high speed, underloading, inoperative stroke motion, lower drive mechanism drive sliding block to realize
Low speed, heavy duty, work are into stroke motion.
10. the crank screw rod composite drive machine for press-bending metal sheet according to claim 1 with multiple-working mode,
Be characterized in that: the movement travel of the screw rod (7) is less than the movement travel of lower crank (8), and screw rod (7) has leading for self-locking performance
Journey, upper drive mechanism drive top shoe to realize low speed, heavy duty, work into stroke motion, and it is high that lower drive mechanism drives sliding block to realize
Speed, underloading, inoperative stroke motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661823.1A CN110280634A (en) | 2019-07-22 | 2019-07-22 | Crank screw rod composite drive machine for press-bending metal sheet with multiple-working mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661823.1A CN110280634A (en) | 2019-07-22 | 2019-07-22 | Crank screw rod composite drive machine for press-bending metal sheet with multiple-working mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110280634A true CN110280634A (en) | 2019-09-27 |
Family
ID=68023562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910661823.1A Pending CN110280634A (en) | 2019-07-22 | 2019-07-22 | Crank screw rod composite drive machine for press-bending metal sheet with multiple-working mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110280634A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113258233A (en) * | 2021-06-22 | 2021-08-13 | 深圳金泰格机电股份有限公司 | Self-locking tuning screw, machining method and cavity filter |
| CN113649456A (en) * | 2021-10-21 | 2021-11-16 | 广东鸿钢智能装备有限公司 | Crank type servo blanking machine |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546311A (en) * | 2003-12-10 | 2004-11-17 | 杜如虚 | Mechanical controlled pressing machine with two degrees of freedom |
| CN201456435U (en) * | 2009-07-14 | 2010-05-12 | 十堰海岚机床有限公司 | Connecting rod force increasing mechanism of servo press machine |
| CN101786133A (en) * | 2010-03-26 | 2010-07-28 | 上海交通大学 | Multi-connecting rod servo press for four-motor parallel drive machine |
| US20100282098A1 (en) * | 2006-08-14 | 2010-11-11 | Ihi Corporation | Servo press and operating method thereof |
| CN102173076A (en) * | 2010-12-14 | 2011-09-07 | 山东科技大学 | Compound drive mechanical servo press |
| CN102430681A (en) * | 2011-12-29 | 2012-05-02 | 一重集团大连设计研究院有限公司 | Drive machine coordinating device of dual servo motors of press machine |
| CN102815006A (en) * | 2012-04-10 | 2012-12-12 | 陈道宝 | Mechanical fast-forward hydraulic press machine |
| CN203019467U (en) * | 2012-11-27 | 2013-06-26 | 承美机械有限公司 | Buffering structure of vacuum forming cutting machine |
| CN104209379A (en) * | 2014-09-19 | 2014-12-17 | 东莞市泽威五金制品有限公司 | Numerical control full-servo bending machine |
| CN106921260A (en) * | 2017-05-11 | 2017-07-04 | 南通普瑞特机械有限公司 | A kind of automatically retractable formula article towing device |
| CN107138578A (en) * | 2017-06-22 | 2017-09-08 | 武汉理工大学 | A kind of servounit fine blanking press main drive gear and motion planning method |
-
2019
- 2019-07-22 CN CN201910661823.1A patent/CN110280634A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546311A (en) * | 2003-12-10 | 2004-11-17 | 杜如虚 | Mechanical controlled pressing machine with two degrees of freedom |
| US20100282098A1 (en) * | 2006-08-14 | 2010-11-11 | Ihi Corporation | Servo press and operating method thereof |
| CN201456435U (en) * | 2009-07-14 | 2010-05-12 | 十堰海岚机床有限公司 | Connecting rod force increasing mechanism of servo press machine |
| CN101786133A (en) * | 2010-03-26 | 2010-07-28 | 上海交通大学 | Multi-connecting rod servo press for four-motor parallel drive machine |
| CN102173076A (en) * | 2010-12-14 | 2011-09-07 | 山东科技大学 | Compound drive mechanical servo press |
| CN102430681A (en) * | 2011-12-29 | 2012-05-02 | 一重集团大连设计研究院有限公司 | Drive machine coordinating device of dual servo motors of press machine |
| CN102815006A (en) * | 2012-04-10 | 2012-12-12 | 陈道宝 | Mechanical fast-forward hydraulic press machine |
| CN203019467U (en) * | 2012-11-27 | 2013-06-26 | 承美机械有限公司 | Buffering structure of vacuum forming cutting machine |
| CN104209379A (en) * | 2014-09-19 | 2014-12-17 | 东莞市泽威五金制品有限公司 | Numerical control full-servo bending machine |
| CN106921260A (en) * | 2017-05-11 | 2017-07-04 | 南通普瑞特机械有限公司 | A kind of automatically retractable formula article towing device |
| CN107138578A (en) * | 2017-06-22 | 2017-09-08 | 武汉理工大学 | A kind of servounit fine blanking press main drive gear and motion planning method |
Non-Patent Citations (1)
| Title |
|---|
| 汤酞则: "《冷冲压工艺与模具设计》", 湖南大学出版社, pages: 11 - 12 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113258233A (en) * | 2021-06-22 | 2021-08-13 | 深圳金泰格机电股份有限公司 | Self-locking tuning screw, machining method and cavity filter |
| CN113649456A (en) * | 2021-10-21 | 2021-11-16 | 广东鸿钢智能装备有限公司 | Crank type servo blanking machine |
| CN113649456B (en) * | 2021-10-21 | 2022-01-04 | 广东鸿钢智能装备有限公司 | Crank type servo blanking machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11338343B2 (en) | Torsion shaft structure based multi-link all-electric servo synchronous bending machine | |
| CN103691777B (en) | A kind of high-precision hydrolic plate bender | |
| CN110280634A (en) | Crank screw rod composite drive machine for press-bending metal sheet with multiple-working mode | |
| CN101244441A (en) | Main unit of numerical control notching press | |
| WO2023040866A1 (en) | Heavy-load high-precision transmission mechanism suitable for metal plate bending device | |
| CN110280631A (en) | Mechanical full electric servo numerical control bender based on multiple degrees of freedom coupling driving | |
| CN101863132A (en) | Mechanical servo drive main transmission device for digital turrent punch press | |
| CN203004339U (en) | Double-point mechanical hydraulic servo press machine structure | |
| CN111974854A (en) | Table type covering machine jacking mechanism based on segmented control principle | |
| CN201012374Y (en) | Toggle link mechanism of the numerical controlled notching press | |
| CN110280630A (en) | The mechanical full electric servo digital control plate bending machine of Three Degree Of Freedom crank connecting link | |
| CN210358659U (en) | High-speed heavy-load full-electric servo numerical control bending machine | |
| CN210358658U (en) | Mechanical full-electric servo numerical control bending machine based on composite drive | |
| CN110280629A (en) | The mechanical full electric servo numerical control Synchronous Bending machine of multiple degrees of freedom composite drive | |
| CN212494669U (en) | Torsion shaft type full-electric servo synchronous bending machine | |
| CN110280633A (en) | High-speed overload full electric servo numerical control bender with multi-operation mode | |
| CN110280632A (en) | The mechanical full electric servo numerical control bender of high-speed overload based on composite drive | |
| CN210358664U (en) | Composite driving numerical control metal plate bending machine with multiple working modes | |
| CN210358662U (en) | Mechanical full-electric servo numerical control bending machine based on multiple degrees of freedom | |
| CN115503286A (en) | Roller interval adjusting assembly and full-automatic high-speed bag making machine | |
| CN210358663U (en) | Full electric servo synchronous bending machine based on torsion shaft structure | |
| CN203649068U (en) | High-precision hydraulic plate bender | |
| CN208303588U (en) | A kind of cold warm extrusion press of novel toggle link | |
| CN207310589U (en) | Anti-bias load double-toggle drive mechanism | |
| CN208600530U (en) | A kind of vertical three spinning-roller spinning machine of heavy type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |