CN105149384B - Two roller differential variable curvature numerical control plate bending rolls and its application method - Google Patents
Two roller differential variable curvature numerical control plate bending rolls and its application method Download PDFInfo
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- CN105149384B CN105149384B CN201510379951.9A CN201510379951A CN105149384B CN 105149384 B CN105149384 B CN 105149384B CN 201510379951 A CN201510379951 A CN 201510379951A CN 105149384 B CN105149384 B CN 105149384B
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- numerical control
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- 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
- B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
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Abstract
The invention discloses two roller differential variable curvature numerical control plate bending rolls and its application methods, including rack (8), upper roll shaft (1), lower roller shaft (2), upper driving device (4), lower driving device (11) and numerical control device (7), the upper roll shaft (1) and lower roller shaft (2) are parallelly mounted on the rack (8), upper driving device (4) control upper roll shaft (1) rotation, the lower driving device (11) control the rotation of the lower roller shaft (2).The beneficial effects of the invention are as follows：By adjusting the linear velocity of upper roller 1 and lower roll 2, adjustable two roll shafts linear differential, any section forms required curvature on panel length direction.
Description
The present invention claims the applying date be on May 27th, 2015 application No. is CN2015102752816 Chinese patent applications
Priority.
【Technical field】
The present invention relates to a kind of veneer reeling machine technologies, and in particular to plate passes through and utilizes the table between upper and lower two rigid roller
Upper thread speed difference makes digital control two-roller differential variable curvature veneer reeling machine of the plate to the low curving of speed.
【Background technique】
Two traditional roller rolling machines roll the cylinder of different curvature, and the steel rider mold for needing replacing different-diameter can just obtain
?.Three rollers, four-roll plate bending machine obtain different-diameter cylinders or variable curvature part cylinder using 3 Forming Theories, need point
Step gradually adjusts the relative position between roller, and production efficiency is low.Traditional veneer reeling machine no matter two rollers or three rollers, four-roller volume
Trigger all can not efficiently realize any section variable curvature forming.
How to realize that sheet metal changes forming amount of curvature and its this demand of direction, this hair during roll bending roll bending
It is bright to propose a kind of two roller differential numerical control variable curvature veneer reeling machines.Plate is allowed to pass through a pair of rigidity with different linear velocity opposite direction rotatings
Roll shaft makes the curving that plate is low to speed, and by adjusting the linear differential of two roll shafts, i.e., changeable sheet material forming curvature is big
Numerical control variable curvature roll bending is realized in small and its direction.
【Summary of the invention】
The present invention is intended to provide two roller differential variable curvature numerical control plate bending rolls and its application method, allow sheet metal to pass through a pair
With the rigid roll shaft of different linear velocity opposite direction rotatings, make the curving that plate is low to speed, by the linear speed for adjusting two roll shafts
It is poor to spend, i.e., numerical control variable curvature roll bending is realized in changeable sheet metal forming curvature size and direction.
To solve the above-mentioned problems, the technical solution of the invention is as follows：Two roller differential variable curvature numerical control plate bending rolls and its
Application method, including rack 8, upper roll shaft 1, lower roller shaft 2, upper driving device 4 and lower driving device 11, the upper roll shaft 1 is under
Roll shaft 2 is parallelly mounted in the rack 8, and the upper driving device 4 controls the upper roll shaft 1 and rotates, the lower driving device
The rotation of the 11 control lower roller shafts 2, the upper driving device 4 and lower driving device 11 are servo drive.
Preferably, the two roller differential variable curvature numerical control plate bending rolls and its application method further include hydraulic device 6 and oil
Cylinder 10, the hydraulic device 6 are connected with oil cylinder 10, upper driving device 4 and lower driving device 11, and oil cylinder 10 pushes lower roll 2 to do
Elevating movement.
Preferably, the oil cylinder 10 has two, and lower roller shaft 2 is supported by two corresponding oil cylinders 10.
Preferably, the two roller differential variable curvature numerical control plate bending rolls and its application method, further include chassis 9, the machine
Frame 8 and the hydraulic device 6 are fixedly mounted on the chassis 9.
Preferably, the two roller differential variable curvature numerical control plate bending rolls and its application method, also packet numerical control device 7, it is described
Numerical control device 7 is mounted on the chassis 9, and is connected with the numerical control device 7.
Preferably, servo mechanism is equipped in the upper driving device 4 and the lower driving device 11.
Preferably, the upper roll shaft 1 and the lower roller shaft 2 are rigid roller.
Preferably, the two roller differential variable curvature numerical control plate bending rolls and its application method, are additionally provided with sensor 5, sensing
Device 5 is mounted in lower roller shaft 2 and rack 8, for measuring absolute distance value between lower roller shaft 2 and upper roll shaft 1.
Preferably, the upper driving device 4 and the lower driving device 11 are servo motor.
The application method of above-mentioned two axis veneer reeling machine of extrusion stretching variable curvature numerical control, includes the following steps：
Step 1：Sheet metal is placed between upper roll shaft 1 and lower roller shaft 2, numerical control device 7 issues instruction, by hydraulic
Device 6 makes oil cylinder 10 that lower roller shaft 2 be pushed to rise, and upper roll shaft 1 and lower roller shaft 2 clamp and act on sheet metal 3；
Step 2：Driving device 4 and lower driving device 11 in starting, upper roll shaft 1 and lower roller shaft 2 are respectively by pre-set
Linear velocity operating, when upper roll shaft 1 linear velocity be less than lower roller shaft 2 linear velocity, plate lower layer is stretched at this time, and upper layer is pressed
Contracting, to be bent upwards；When the linear velocity of upper roll shaft 1 is greater than the linear velocity of lower roller shaft 2, plate is bent downwardly at this time.
Step 3：In the process of running, by numerical control device, the linear velocity of roll shaft 1 and lower roller shaft 2 in adjustment, thus
Any section forms required curvature on sheet metal length direction.
Further, it is less than plate thickness with the absolute distance value of upper roll shaft 1 after lower roller shaft 2 rises in step 1.
Further, upper roll shaft 1 and 2 both ends of lower roller shaft, have been all made of the synchronously driven device in both ends.
The technical problem to be solved in the present invention is to provide one kind to overturn traditional veneer reeling machine Forming Theory, passes through numerical control adjustment two
Roll shaft linear differential makes plate be extruded and stretch respectively in radially different level, changes sheet material forming curvature, realizes that numerical control becomes
The novel plate bending roll of curvature roll bending.
Upper roll shaft of the invention is fixed on the rack, and rack is fixed on chassis, and lower roller shaft is by two corresponding oil cylinder branch
It holds, and oil cylinder can push lower roller shaft to move up and down.Upper roll shaft and lower roller shaft both ends are each configured with driving device, and with it is hydraulic
Device is connected, and numerical control device is connected with hydraulic device and sends action command.
After lower roller shaft of the invention rises, it can be gone out by the sensor measurement being mounted in lower roller shaft and rack and upper roller
Absolute distance value between axis, we term it intrusion for this distance value.Intrusion size determines roll shaft and lower roller shaft to plate
The load of material load.The frictional force that load appropriate generates is conducive to the plastic deformation of plate.
The present invention is deformation curvature required for obtaining, as long as changing the linear differential of upper roll shaft and lower roller shaft.Linear velocity
Difference is bigger, and sheet metal deformation curvature is bigger after roll bending；Linear differential is smaller, and sheet metal deformation curvature is smaller after roll bending.On
Roll shaft, lower roller shaft are rigid roll shaft, and the built-in servo mechanism of upper driving device, lower driving device with Real-time Feedback and can be adjusted
The linear velocity of whole upper roll shaft and lower roller shaft realizes any section variable curvature by changing the linear differential of upper roll shaft and lower roller shaft
Roll bending.
The present invention is by sensor and numerical control device, provided with the automatic flat-adjustable function that lower roller shaft rises, to ensure that
The depth of parallelism between lower roller shaft in roll bending process and upper roll shaft, to guarantee the quality of variable curvature workpiece.
The present invention has been all made of the synchronously driven device in both ends, has been beneficial to prevent one end in upper roll shaft and lower roller shaft both ends
The defects of causing workpiece to be distorted, wrinkle due to the torsional deflection of roll shaft face when driving.
The present invention is calculated by the sheet metal to different plate thickness, unlike material using finite element modelling and mathematical model,
Its result is compared with test data, has found the affecting laws of each technological parameter, and establish database, it is different needed for obtaining
Parameter corresponding to curvature is shaped, to realize the Digital Control of extrusion stretching roll bending variable curvature.
After above-mentioned two axis veneer reeling machine of extrusion stretching variable curvature numerical control, have the advantages that：Device structure is simple,
Numerical control operating, performance are stablized, and manufacturing process is different from the manufacturing process of traditional veneer reeling machine, realize any section variable curvature at
Shape, this is that no matter two rollers or three rollers, four-roll plate bending machine all cannot achieve traditional veneer reeling machine, and it is back and forth curved not need multi-pass
Song greatly improves production efficiency.It is simple for structure, and rationally, processing technology is simple for design, at low cost, and is easily assembled, if
Standby running precision is high, wear-resistant, improves the processing performance of complete machine.
【Detailed description of the invention】
Fig. 1 is the present invention preferably structure chart；
Fig. 2 is that plate rolls schematic diagram；
Fig. 3 is to be bent up shaping area axial, cross-sectional view；
Fig. 4 is to be turned under shaping area axial, cross-sectional view.
【Specific embodiment】
The present invention will be further described in detail with reference to the specific embodiments.
In order to which those skilled in the art better understood when technical solution provided by the present invention, below with reference to specific
Embodiment is illustrated.
First specific embodiment：As shown in Figure 1 and Figure 2, two roller differential variable curvature numerical control plate bending rolls and its application method,
Including rack 8, upper roll shaft 1, lower roller shaft 2, upper driving device 4, lower driving device 11 and numerical control device 7, upper roll shaft 1 is fixed on machine
On frame 8, rack 8 is fixed on chassis 9, and lower roller shaft 2 is supported by two corresponding oil cylinders 10, and oil cylinder 10 can push lower roller shaft 2
It moves up and down.Upper roll shaft 1 and 2 both ends of lower roller shaft are each configured with driving device 4, lower driving device 11.Hydraulic device 6 with
Hydraulic cylinder 10 and driving device 4 are connected with 11, and numerical control device 7 is connected with hydraulic device 6 and sends to hydraulic device 6
Action command.
Servo mechanism, the upper roll shaft 1 and the lower roll are equipped in the upper driving device 4 and the lower driving device 11
Axis 2 is rigid roller.
Second specific embodiment：On the basis of the first specific embodiment, two roller differential variable curvature numerical control plate bending rolls
And its application method further includes sensor 5, sensor 5 is mounted in lower roller shaft 2 and rack 8, for measure lower roller shaft 2 with
Absolute distance value (intrusion) c between roll shaft 1.Upper roll shaft 1 and 2 both ends of lower roller shaft be mounted with respectively high precision velocity measurement,
Feedback and control device.Upper driving device 4, lower driving device 11 are servo drive.
To obtain required bending curvature, as long as changing the linear differential of upper roll shaft 1 and lower roller shaft 2.Linear differential is got over
Greatly, plate deformation curvature is bigger after roll bending；Linear differential is smaller, and plate deformation curvature is smaller after roll bending.In upper roll shaft 1 and lower roll
2 both ends of axis are mounted with high precision velocity measurement, feedback and control device respectively, can be with the current upper roll shaft 1 of Real-time Feedback and control
With the linear velocity of lower roller shaft 2.
By sensor 5 and numerical control device 7 automatic flat-adjustable function of the rising of lower roller shaft 2 may be implemented, to protect in the present invention
It has demonstrate,proved in the depth of parallelism in roll bending process between lower roller shaft 2 and upper roll shaft 1, to guarantee the quality of variable curvature workpiece.
The present invention has been all made of the synchronously driven device in both ends, has been beneficial to prevent one in upper roll shaft 1 and 2 both ends of lower roller shaft
The defects of causing workpiece to be distorted, wrinkle due to the torsional deflection of roll shaft face when the driving of end.
The application method of above-mentioned two rollers differential variable curvature numerical control plate bending roll and its application method, includes the following steps：
Step 1：As shown in Fig. 2, sheet metal 3 is placed between upper roll shaft 1 and lower roller shaft 2, the sending of numerical control device 7 refers to
It enables, makes oil cylinder 10 that lower roller shaft 2 be pushed to rise by hydraulic device 6, upper roll shaft 1 and lower roller shaft 2 clamp and act on sheet metal
3；
Step 2：Driving device 4 and lower driving device 11 in starting, upper roll shaft 1 and lower roller shaft 2 are respectively by pre-set
Linear velocity operating, when upper roller roller 1 linear velocity be less than lower roller shaft 2 linear velocity, plate lower layer is stretched at this time, and upper layer is pressed
Contracting, to be bent upwards；When the linear velocity of upper roll shaft 1 is greater than the linear velocity of lower roller shaft 2, plate is bent downwardly at this time.
Step 3：In the process of running, by numerical control device 7, the linear velocity of roll shaft 1 and lower roller shaft 2 in adjustment, thus
Any section forms required curvature on 3 length direction of sheet metal.
In step 1, after lower roller shaft 2 rises, it can be measured by the sensor 5 being mounted in lower roller shaft 2 and rack 8
Absolute distance value (intrusion) c between upper roll shaft 1 out, the intrusion c between upper and lower roll should be less than plate thickness t.Intrusion c's
Size determines the load that roll shaft 1 and lower roller shaft 2 load plate.Load action appropriate generates circumferential friction in plate
Power and thickness are conducive to plastic deformation and the rolled forming of plate to extruding force.
In step 1, as shown in Fig. 2, schematic diagram, including upper roll shaft 1, lower roller shaft 2 and sheet metal 3 are rolled for plate,
The shape is that the linear velocity of upper roll shaft 1 is first less than 2 linear velocity of lower roller shaft, is then greater than 2 linear velocity of lower roller shaft again and obtains.
It is illustrated in figure 3 and is bent up shaping area axial, cross-sectional view, since the linear velocity of upper roll shaft 1 and lower roller shaft 2 differs, produce
Linear differential (speed ratio) is given birth to.It is assumed that upper roller axial velocity is V1, lower roll axial velocity is V2.I=V2/V1 is known as linear speed
Than.Work as i>When 1, the section S1 compression chord, the section S2 tension stress, plate is bent upwards (just curved) at this time, as shown in Figure 3；Work as i
When < 1, the section S1 tension stress, the section S2 compression chord, sheet metal is bent downwardly (recurvation) at this time, as shown in Figure 4.
By the sheet metal to different plate thickness, unlike material, using finite element modelling and Mechanics Calculation, to stretching and pressure
Compression process carries out simulation study and experimental data accumulation, has found the function influence rule of each technological parameter, and establishes data
Library obtains speed ratio i corresponding to required different bending curvature, to realize the Digital Control of two roller differential variable curvatures.
Different plate thickness, unlike material characteristic sheet metal coiling process in, regular pair of speed ratio i formed curvature
It should be related to.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification and
Environment, and can be changed within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of protection of the claims.
Claims (8)
1. the application method of two roller differential variable curvature numerical control plate bending rolls, which is characterized in that including rack (8), upper roll shaft (1), under
Roll shaft (2), upper driving device (4) and lower driving device (11), the upper roll shaft (1) and lower roller shaft (2) are parallelly mounted to described
In rack (8), the upper driving device (4) controls the upper roll shaft (1) with the rotation of the first linear velocity, the lower driving device
(11) lower roller shaft (2) is controlled with the rotation of the second linear velocity, and the upper driving device (4) and lower driving device (11) are to watch
Driving device is taken, the upper roll shaft (1) and the lower roller shaft (2) are rigid roller, further include connected hydraulic device (6) and oil
Cylinder (10), and oil cylinder (10) pushes lower roll (2) to move up and down；
Its application method, includes the following steps：
Sheet metal is placed between upper roll shaft (1) and lower roller shaft (2) by step 1, and numerical control device (7) issues instruction, passes through peace
Sensor 5 on lower roller shaft 2 and rack 8 measures the absolute distance value c between upper roll shaft 1, the indentation between upper and lower roll
Amount c should be less than plate thickness t, make oil cylinder (10) that lower roller shaft (2) to be pushed to rise by hydraulic device (6), upper roll shaft (1) and lower roller shaft
(2) it clamps and acts on sheet metal (3)；
Step 2：Driving device (4) and lower driving device (11) in starting, upper roll shaft (1) and lower roller shaft (2) respectively by setting in advance
The linear velocity operating set, when the linear velocity of upper roll shaft (1) is less than the linear velocity of lower roller shaft (2), plate lower layer is stretched at this time,
Upper layer is compressed, to be bent upwards；When the linear velocity of upper roll shaft (1) is greater than the linear velocity of lower roller shaft (2), plate is downward at this time
Bending；
Step 3：In the process of running, by numerical control device, the linear velocity of roll shaft (1) and lower roller shaft (2) in adjustment, thus
Any section forms required curvature on sheet metal length direction.
2. the application method of two rollers differential variable curvature numerical control plate bending roll as described in claim 1, which is characterized in that described hydraulic
Device (6) is connected with upper driving device (4) and lower driving device (11).
3. the application method of two rollers differential variable curvature numerical control plate bending roll as claimed in claim 2, which is characterized in that the oil cylinder
(10) there are two, lower roller shaft (2) is supported by two corresponding oil cylinders (10).
4. the application method of two rollers differential variable curvature numerical control plate bending roll as claimed in claim 3, which is characterized in that further include bottom
Disk (9), the rack (8) and the hydraulic device (6) are fixedly mounted on the chassis (9).
5. the application method of two rollers differential variable curvature numerical control plate bending roll as claimed in claim 4, which is characterized in that also packet numerical control
Device (7), the numerical control device (7) is mounted on the chassis (9), and is connected with the numerical control device (7).
6. the application method of two rollers differential variable curvature numerical control plate bending roll as claimed in claim 5, which is characterized in that the upper drive
Servo mechanism is equipped in dynamic device (4) and the lower driving device (11).
7. the application method of two rollers differential variable curvature numerical control plate bending roll as claimed in claim 6, which is characterized in that be additionally provided with biography
Sensor (5), sensor (5) are mounted on lower roller shaft (2) and rack (8), for measure lower roller shaft (2) and upper roll shaft (1) it
Between absolute distance value.
8. the application method of two rollers differential variable curvature numerical control plate bending roll as claimed in claim 7, which is characterized in that the upper drive
Dynamic device (4) and the lower driving device (11) are servo motor.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510379951.9A CN105149384B (en) | 2015-05-27 | 2015-07-01 | Two roller differential variable curvature numerical control plate bending rolls and its application method |
| PCT/CN2016/080937 WO2016188305A1 (en) | 2015-05-27 | 2016-05-04 | Two-roll differential curvature-varying numerical control rolling machine and using method therefor |
| DE212016000100.0U DE212016000100U1 (en) | 2015-05-27 | 2016-05-04 | NC sheet metal bending machine with two rolls operated at different speeds and with variable curvature |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510275281 | 2015-05-27 | ||
| CN2015102752816 | 2015-05-27 | ||
| CN201510379951.9A CN105149384B (en) | 2015-05-27 | 2015-07-01 | Two roller differential variable curvature numerical control plate bending rolls and its application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105149384A CN105149384A (en) | 2015-12-16 |
| CN105149384B true CN105149384B (en) | 2018-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510379951.9A Active CN105149384B (en) | 2015-05-27 | 2015-07-01 | Two roller differential variable curvature numerical control plate bending rolls and its application method |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105149384B (en) |
| DE (1) | DE212016000100U1 (en) |
| WO (1) | WO2016188305A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149384B (en) * | 2015-05-27 | 2018-11-16 | 南通超力卷板机制造有限公司 | Two roller differential variable curvature numerical control plate bending rolls and its application method |
| CN106180324A (en) * | 2016-07-11 | 2016-12-07 | 天津大学 | A kind of plate continuous bend processing method utilizing asymmetric compression and differential traction |
| CN106975675B (en) * | 2017-03-16 | 2019-05-17 | 南通蓝岛海洋工程有限公司 | System and shell rolling technique is monitored and controlled in the light sensation of veneer reeling machine |
| CN107297400A (en) * | 2017-06-27 | 2017-10-27 | 南京航空航天大学 | A kind of method and device of the axle electricity auxiliary heating roll forming of difficult moulding material two |
| CN107790522A (en) * | 2017-09-07 | 2018-03-13 | 南通航力重工机械有限公司 | Upper roller numerically controlled universal veneer reeling machine |
| DE102017122073B4 (en) * | 2017-09-22 | 2023-05-25 | Häusler Holding Ag | Process and control of a bending machine |
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2015
- 2015-07-01 CN CN201510379951.9A patent/CN105149384B/en active Active
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2016
- 2016-05-04 DE DE212016000100.0U patent/DE212016000100U1/en active Active
- 2016-05-04 WO PCT/CN2016/080937 patent/WO2016188305A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1451496A (en) * | 2003-04-15 | 2003-10-29 | 南京钢铁股份有限公司 | Rolled member head shape controlling method |
| CN201105522Y (en) * | 2007-09-30 | 2008-08-27 | 北京万源多贝克包装印刷机械有限公司 | Device reconciling linear speed of anvil roller and knife roller |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE212016000100U1 (en) | 2018-02-07 |
| CN105149384A (en) | 2015-12-16 |
| WO2016188305A1 (en) | 2016-12-01 |
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Denomination of invention: Two roll differential variable curvature CNC bending machine and its application method Effective date of registration: 20220621 Granted publication date: 20181116 Pledgee: Agricultural Bank of China Limited Hai'an sub branch Pledgor: Nantong Chaoli Rolling Machine Producing Co.,Ltd. Registration number: Y2022990000340 |