CN207344184U - A kind of servo-controlled flexible material pressing device by formula numerical control drilling - Google Patents
A kind of servo-controlled flexible material pressing device by formula numerical control drilling Download PDFInfo
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- CN207344184U CN207344184U CN201720968180.1U CN201720968180U CN207344184U CN 207344184 U CN207344184 U CN 207344184U CN 201720968180 U CN201720968180 U CN 201720968180U CN 207344184 U CN207344184 U CN 207344184U
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- material pressing
- pressing device
- flexible material
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Abstract
The utility model discloses a kind of servo-controlled flexible material pressing device by formula numerical control drilling, including a bottom plate（10）, one side lean on latch device（20）, a flexible material pressing device（30）, in side by there is the passage entered for plate between latch device and flexible material pressing device（40）, after plate enters workspace under the drive of transmitting device along passage, when reaching setting position, utilize flexible material pressing device（30）Push plate to side and lean on latch device（20）, and plate is compressed, plate is positioned, is conducive to subsequently make Drilling operation, and flexible material pressing device is due to that with certain elasticity, can absorb the scale error of plate on the width, so as to improve borehole accuracy.
Description
Technical field
Sheet fabrication field technology is the utility model is related to, refers in particular to one kind by the servo-controlled soft of formula numerical control drilling
Property material pressing device.
Background technology
It is used to carry out Drilling operation to plate by formula numerical control drilling, its structure refers to Chinese utility model patent, applies
Number for 201710223217.2 a kind of automatic barcode scanning of automatic feed/discharge intelligence pass through formula numerical control drilling equipment.When plate is upper
When the drive of material machine enters operating position, first plate is positioned, then is drilled, self-emptying after drilling.
It is existing that material pressing device, which is mostly presser type, to be realized to the material pressing device that is located through of plate by formula digital control hole drilling equipment
Material pressing device or SERVO CONTROL torsion-type material pressing device.Wherein, presser type material pressing device is rigid binder, its pressure is non-adjustable
Section, when there is width dimensions error at both ends end to end after plate cutting, it is excessive or do not press tightly phenomenon to produce pressure.SERVO CONTROL is turned round
There are following drawback for power formula material pressing device：
1st, material pressing device for one piece be fixed on translation bearing on pressing plate, its can only spacing one fixed width, plate can not be eliminated
Material error, when plate cutting has error, binder or tension or cannot keeps under control plate, precision can not ensure.
2nd, existing by formula numerical control drilling SERVO CONTROL torsion-type material pressing device, its electrical control difficulty is big, when torsion is too small
When, material pressing device can produce the inadequate power of overload.When reaching certain torsion, servomotor stops operating.The excessive binder meeting of torsion
Phenomena such as tension, the bad control of its torsion, height is required to control, while its electrical equipment is of high cost, and stability is poor；
3rd, existing machine side surface detent mechanism is stationary structure, its entirety cannot sink, and can not get out of the way lateral location, nothing
Method beats positioning end lateral aperture position.
4th, existing material pressing device side is face contact type binder, its straightness directly asks high, to the processing linear of pressing plate side
Degree requires high.
5th, existing material pressing device is without synchronous tape synchronizer, it is synchronously synchronous by electrical control, poor synchronization.
Utility model content
In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide one kind and passes through formula the utility model
The servo-controlled flexible material pressing device of numerical control drilling, elastic force is provided by flexible pressing wheel mechanism, absorbs plate end to end two
Width error existing for end so that plate positioning is more accurate, and borehole accuracy is high.
To achieve the above object, the utility model is using following technical solution：
A kind of servo-controlled flexible material pressing device by formula numerical control drilling, including
One bottom plate；
One side leans on latch device, it is installed on bottom plate, the side by latch device include side positioning strip, lifting cylinder,
Side positioning bearing, line slideway, sliding block；The lifting cylinder is supported between bottom plate and side positioning strip, the side positioning branch
Seat is fixed on bottom plate, and line slideway is vertically installed on side positioning bearing, and sliding block, which coordinates, to be installed on line slideway, and sliding block leads to
Cross connecting base connection side positioning strip；
One flexible material pressing device, it is installed on bottom plate, is supplied in side by having between latch device and flexible material pressing device
The passage that plate enters；The flexibility material pressing device includes servomotor, driving wheel, belt, driven wheel, screw, translation bearing, pressure
Seat board, flexible pressing wheel mechanism are taken turns, the shaft connection driving wheel of the servomotor, driving wheel connects driven by belt
Wheel, driven wheel connection wire rod, translation bearing are installed on screw, and pinch roller seat board is fixed on the upper end of translation bearing, in pinch roller seat
One row's pressing wheel mechanism is installed on the inside of plate；
After being started by formula numerical control drilling, plate enters work under the drive of transmission mechanism along the X-axis positive direction of passage
Area, when reaching setting position, plate is acted by block, at this time side by latch device, sliding block is led in straight line using lifting cylinder
Moved on rail, make side positioning strip be ramped up along Z axis pros；Then, flexible material pressing device action, is driven using servomotor and led
Driving wheel, driven wheel is delivered power to by belt, drives screw to rotate by driven wheel, so as to translate bearing along Y-axis positive direction
Translation, dragging pinch roller seat board is synchronous to be translated along Y-axis positive direction, drives pressing wheel mechanism in a row to compress the first side of plate, at the same time
The second side of plate is promoted to be tightly abutted against on the positioning strip of side.
As a preferred embodiment, the pressing wheel mechanism includes fixed briquetting, movable rubber wheel base, rubber tire, rolling bearing, institute
State fixed briquetting and be installed in pinch roller seat board, compression spring is abutted between movable rubber wheel base and fixed briquetting；The rolling bearing peace
Loaded in rubber tire, rolling bearing is installed on movable rubber wheel base centrally through locking pin, baffle ring.
As a preferred embodiment, the movable rubber wheel base, which is equipped with, slides notch, and the fixed briquetting is located at sliding groove
Location hole of the spring is equipped with movable rubber wheel base clearance fit, the head end of fixed briquetting in mouthful, one end of compression spring extend into bullet
In spring location hole, another end in contact activity rubber wheel base.
As a preferred embodiment, the outer end of the movable rubber wheel base is equipped with through hole, and adjusting screw is provided with the through hole,
Adjust all rubber tire seal faces point-blank, the interior end in contact of the adjusting screw fixes the upper rib of briquetting.
As a preferred embodiment, the pinch roller seat board is equipped with multiple resigning grooves, and the rubber tire of every group of pressing wheel mechanism is equal
It is contained in resigning groove, and the outermost end of each rubber tire is stretched out outside resigning groove.
As a preferred embodiment, the both sides of the driving wheel are equipped with transition wheel, and transition wheel is installed in adjustment seat, adjust
The top of seat is equipped with tightening piece, and tensioner screw is equipped between tightening piece and adjustment seat.
As a preferred embodiment, the screw is with the connection relation for translating bearing：Nut is arranged with screw, it is described
Translation bearing is nut seat, and nut is screwed together with translation bearing.
As a preferred embodiment, one end of the screw is installed on bottom plate by bearing block, and the other end passes through screw rodb base
It is installed on bottom plate.
As a preferred embodiment, the quantity of the servomotor is 1, and screw quantity is 2, passes through 1 servo electricity
Machine and 1 belt, it is synchronous to drive 2 screws to rotate, make 2 382 synchronous translationals of movable rubber wheel base, drive a pinch roller seat board 37
Translated along Y-axis positive direction.
As a preferred embodiment, the lifting cylinder has 2, and each lifting cylinder is positioned by active joint and side
Bar connects.
The present invention has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technical proposal
Understand, since there is provided side, by latch device and flexible material pressing device, after being started by formula numerical control drilling, plate is in transmission mechanism
Drive under along the X-axis positive direction of passage enter workspace, when reaching setting position, plate is by block, and side is by shelves dress at this time
Action is put, sliding block is moved on line slideway using lifting cylinder, makes side positioning strip be ramped up along Z axis pros；Then, it is soft
Property material pressing device action, using servomotor drive driving wheel, driven wheel is delivered power to by belt, is driven by driven wheel
Screw rotates, and is translated so as to translate bearing along Y-axis positive direction, and dragging pinch roller seat board is synchronous to be translated along Y-axis positive direction, is driven in a row
Pressing wheel mechanism compresses the first side of plate, while promotes the second side of plate to be tightly abutted against on the positioning strip of side, plate
Positioned, then carry out Drilling operation, and since flexible material pressing device has certain elasticity, plate can be absorbed in width
On error, so as to improve borehole accuracy.
More clearly to illustrate the architectural feature of the utility model and effect, come below in conjunction with the accompanying drawings with specific embodiment pair
The utility model is described in detail.
Brief description of the drawings
Fig. 1 is the first visual angle schematic diagram of the embodiment of the utility model.
Fig. 2 is the second visual angle schematic diagram of the embodiment of the utility model.
Fig. 3 is the sectional view of the embodiment of the utility model.
Fig. 4 is the assembling figure of the pressing wheel mechanism of the embodiment of the utility model.
Fig. 5 is the exploded view of the pressing wheel mechanism of the embodiment of the utility model.
Attached drawing identifier declaration：
10th, latch device is leaned in bottom plate 20, side
21st, side positioning strip 211, bucking ladder
22nd, lifting cylinder 23, side positioning bearing
24th, line slideway 25, sliding block
26th, connecting base 27, active joint
30th, flexible material pressing device 31, servomotor
32nd, driving wheel 33, belt
34th, driven wheel 35, screw
351st, nut 352, bearing block
353rd, screw rodb base 36, translation bearing
37th, pinch roller seat board 371, resigning groove
38th, pressing wheel mechanism 381, fixed briquetting
3811st, upper rib 3812, location hole of the spring
382nd, movable rubber wheel base 3821, slip notch
3822nd, through hole 383, rubber tire
3831st, locking pin 3832, baffle ring
384th, rolling bearing 385, compression spring
386th, adjusting screw 39, transition wheel
391st, adjustment seat 392, tightening piece
393rd, tensioner screw 40, passage
50th, plate 51, first side
52nd, second side.
Embodiment
It refer to shown in Fig. 1 to Fig. 5, that show the concrete structure of the preferred embodiment of the utility model, is a kind of
By the servo-controlled flexible material pressing device of formula numerical control drilling, including a bottom plate 10, one side are by the flexible binder of latch device 20, one
Device 30, the side are mounted on bottom plate 10 by latch device 20 and flexible material pressing device 30, side by latch device 20 with it is soft
Property material pressing device 30 between have for plate enter passage 40, when plate is in transmitting device（It is not shown）Drive under along passage
After 40 enter workspace, when reaching setting position, latch device 20 and flexible material pressing device 30 are leaned on by the both sides of plate using side
Clamp, position plate, be conducive to subsequently make Drilling operation, and flexible material pressing device 30 is due to certain elasticity, can be with
The error of plate on the width is absorbed, so as to improve borehole accuracy.
Wherein, which leads by latch device 20 including side positioning strip 21, lifting cylinder 22, side positioning bearing 23, straight line
Rail 24, sliding block 25.The lifting cylinder 22 is supported between bottom plate 10 and side positioning strip 21, and the side positioning bearing 23 is fixed
In bottom plate 10, line slideway 24 is vertically installed on side positioning bearing 23, and sliding block 25, which coordinates, to be installed on line slideway 24, sliding
Block 25 connects side positioning strip 21 by connecting base 26.Sliding block 25 is moved on line slideway 24 using lifting cylinder 22, make
Side positioning strip 21 rises along Z-direction.In the present embodiment, the lifting cylinder 22 has 2, and each lifting cylinder 22 passes through work
Dynamic connector 27 connects with side positioning strip 21, and active joint 27 can be freely movable.The side positioning strip 21 is equipped with trapezoidal
Platform 211, it is ensured that plate positions accurate.
The flexibility material pressing device 30 includes servomotor 31, driving wheel 32, belt 33, driven wheel 34, screw 35, translation
Bearing 36, pinch roller seat board 37, flexible pressing wheel mechanism 38.The shaft connection driving wheel 32 of the servomotor 31, actively
Wheel 32 connects driven wheel 34,34 connection wire rod 35 of driven wheel by belt 33, and translation bearing 36 is installed on screw 35, pinch roller seat
Plate 37 is fixed on the upper end of translation bearing 36, and row's pressing wheel mechanism 38 is provided with the inner side of pinch roller seat board 37.Utilize servo electricity
Machine 31 drives driving wheel 32, delivers power to driven wheel 34 by belt 33, drives screw 35 to rotate by driven wheel 34, so that
Translate bearing 36 to translate along Y-axis positive direction, dragging pinch roller seat board 37 is synchronous to be translated along Y-axis positive direction, drives pressing wheel mechanism in a row
38 compress the first side 51 of plate 50, while promote the second side 52 of plate to be tightly abutted against on side positioning strip 21, plate
Material is positioned, then carries out Drilling operation.
Wherein, the both sides of the driving wheel 32 are equipped with transition wheel 39, and transition wheel 39 is installed in adjustment seat 391, adjustment seat
Top be equipped with tightening piece 392, tensioner screw 393 is equipped between tightening piece 392 and adjustment seat 391, for adjusting belt 33
Elasticity.The screw 35 and translate bearing 36 connection relation be：Nut 351, the translation bearing are arranged with screw 35
36 be nut seat, and nut 351 is screwed together with translation bearing 36, so as to translate during bearing 36 can move on screw 35, general
The rotary motion of screw 35 is changed into the translational motion of translation bearing 36.Installed by bearing block 352 one end of the screw 35
In bottom plate 10, the other end is installed on bottom plate 10, the setting of bearing block 352 by screw rodb base 353 so that screw 35 is by driven wheel 34
Drive and rotation, drive during 35 rotation of screw translation bearing 36 to translate.
In the present embodiment, the quantity of the servomotor 31 is 1, and 35 quantity of screw is 2, passes through 1 servomotor
31 and 1 belts 33, it is synchronous to drive 2 screws 35 to rotate, make 2 36 synchronous translationals of translation bearing, drive a pinch roller seat board
37 translate along Y-axis positive direction.Since separate unit servomotor 31 drives the design of two screws 35, synchronism is high, high transmission accuracy,
Ensure that both ends compress synchronous carry out to plate end to end.Further, since rows of pressing wheel mechanism 38 is provided with, therefore in pinch roller seat board 37
Multiple resigning grooves 371 are equipped with, the rubber tire 383 of every group of pressing wheel mechanism 38 is contained in resigning groove 371, and each rubber tire
383 outermost end is stretched out outside resigning groove 371, ensures that each rubber tire 383 can be with the contacts side surfaces of plate.
As shown in Figures 3 to 5, the pressing wheel mechanism 38 includes fixed briquetting 381, movable rubber wheel base 382, rubber tire 383, rolling
Dynamic bearing 384.The fixed briquetting 381 is installed in pinch roller seat board 37, is abutted between movable rubber wheel base 382 and fixed briquetting 381
Compression spring 385；The rolling bearing 384 is installed in rubber tire 383, rolling bearing 384 centrally through locking pin 3831, gear
Circle 3832 is installed on movable rubber wheel base 382.Wherein, the installation of rolling bearing 384 allows rubber tire 383 to rotate, reduce with
The frictional force of side face of plate material contact, when plate head end is wider than tail end, inclination occurs in the side of plate, rubber tire 383 is in plate
Material side rolls, and recycles the elastic force of compression spring 385 to act on the width dimensions error between absorbing plate end to end.
Specifically, the movable rubber wheel base 382, which is equipped with, slides notch 3821, and the fixed briquetting 381 is positioned at slip
In notch 3821, the head end of fixed briquetting 381 is equipped with location hole of the spring 3812, and one end of compression spring 385 extend into spring and determines
In the hole 3812 of position, another end in contact activity rubber wheel base 382.In this way, fixed briquetting 381 is motionless, when rubber tire 383 connects with side face of plate material
After touch, rubber tire 383 is under pressure, and pressure is passed to movable rubber wheel base 382, movable 382 compression pressure spring 385 of rubber wheel base, glue
Wheel 383 can carry out flexible contact compression to plate, its thrust is ascending variable, with the broad-ruler between absorbing material end to end
Very little error.
The outer end of the activity rubber wheel base 382 is equipped with through hole 3822, and adjusting screw 386 is provided with the through hole 3822, should
The interior end in contact of adjusting screw 386 fixes the upper rib 3811 of briquetting 381.Adjusting screw 386 is rotated, movable rubber wheel base can be made
382 move along the positive direction or opposite direction of Y-axis, so as to achieve the purpose that to finely tune rubber tire 383, adjust all rubber tire seal faces one
On bar straight line.
The operation principle of the utility model is as follows：After being started by formula numerical control drilling, plate is under the drive of transmission mechanism
Enter workspace along the X-axis positive direction of passage 40, when reaching setting position, plate leans on latch device 20 first by block, at this time side
Action is raised above, and is recycled flexible material pressing device 30 to push plate to side and is leaned on latch device 20, in this way, flexible material pressing device pressure
The first side 51 of tight plate 50, while promote the second side 52 of plate to be tightly abutted against on side positioning strip 21, plate obtains
To positioning, then carry out Drilling operation.
More specifically, due to the side positioning by side by latch device 20 to plate, when plate enters from feedstock direction
During machine, side positioning strip 21 rises to the lifting of operating position, wherein side positioning strip 21 under the action of lifting cylinder 22
It is to be fixed by side positioning bearing 23, rise and fall are oriented to what is realized by line slideway 24 and sliding block 25.
After side is risen by latch device 20, plate is in transmitting device（It is not shown）Drive under enter workspace, have
The pressing wheel mechanism 38 of elasticity leans on 20 direction binder of latch device under the driving of servomotor 31 toward side, when reaching setting position,
Servomotor stops, the workpiece pressing under the action of the compression spring 385 of the inside of pressing wheel mechanism 38.Wherein, pressing wheel mechanism 38 is pacified
On pinch roller seat board, pinch roller seat board is installed on translation bearing 36, and the movement of pressing wheel mechanism 38 is provided by servomotor 31
Power, by driving wheel 32, driven wheel 34, on the screw 35 for transferring power to both sides of power belt 33, wherein screw 35
The convert rotational motion of servomotor 31 is gone to move for straight line binder with nut 351, wherein the elastic of power belt 33 can be with
Adjusted by tightening piece 392 and transition wheel 39.
Pressing wheel mechanism 38 includes rubber tire 383, and rubber tire 383 is fixed on rolling bearing 384, passes through the work of rolling bearing 384
With rotation is produced, rolling bearing 384 is fixed by locking pin 3831 and baffle ring 3832.The cladding material of rubber tire 383 is rubber, no
Side face of plate material can be weighed wounded, rubber tire 383 is fixed on movable rubber wheel base, is provided among movable rubber wheel base and is slided notch 3821, activity
Rubber wheel base installation is limited in T-shaped fixed briquetting 381, and T-shaped fixed briquetting 381 is designed with rib 3811, movable rubber wheel base and T
Type fixes briquetting 381 by clearance fit, can be free to slide under the action of compression spring 385, and thrust is produced to plate.
The above descriptions are merely preferred embodiments of the present invention, and not the technical scope of the utility model is made
Any restrictions, therefore every any trickle amendment made according to the technical essence of the utility model to above example, equivalent change
Change and modification, in the range of still falling within technical solutions of the utility model.
Claims (10)
- A kind of 1. servo-controlled flexible material pressing device by formula numerical control drilling, it is characterised in that：IncludingOne bottom plate (10)；One side leans on latch device (20), it is installed on bottom plate, which includes side positioning strip (21), lifting air by latch device Cylinder (22), side positioning bearing (23), line slideway (24), sliding block (25)；The lifting cylinder is supported in bottom plate and is positioned with side Between bar, the side positioning bearing is fixed on bottom plate, and line slideway is vertically installed on side positioning bearing, and sliding block coordinates installation In on line slideway, sliding block connects side positioning strip by connecting base (26)；One flexible material pressing device (30), it is installed on bottom plate, is supplied in side by having between latch device and flexible material pressing device The passage (40) that plate enters；The flexibility material pressing device includes servomotor (31), driving wheel (32), belt (33), driven wheel (34), screw (35), translation bearing (36), pinch roller seat board (37), flexible pressing wheel mechanism (38), the servomotor Shaft connects driving wheel, and driving wheel connects driven wheel by belt, and driven wheel connection wire rod, translates bearing（36）Installed in screw On, pinch roller seat board is fixed on the upper end of translation bearing, and row's pressing wheel mechanism is provided with the inside of pinch roller seat board.
- A kind of 2. servo-controlled flexible material pressing device by formula numerical control drilling according to claim 1, it is characterised in that： The pressing wheel mechanism（38）Including fixed briquetting（381）, movable rubber wheel base（382）, rubber tire（383）, rolling bearing（384）, institute State fixed briquetting and be installed in pinch roller seat board（37）, compression spring is abutted between movable rubber wheel base and fixed briquetting（385）；The rolling Dynamic bearing is installed in rubber tire, rolling bearing centrally through locking pin（3831）, baffle ring（3832）It is installed on movable rubber wheel base On.
- A kind of 3. servo-controlled flexible material pressing device by formula numerical control drilling according to claim 2, it is characterised in that： The activity rubber wheel base（382）It is equipped with and slides notch（3821）, the fixed briquetting positioned at slide notch in and movable rubber tire Seat clearance fit, the head end of fixed briquetting are equipped with location hole of the spring（3812）, one end of compression spring extend into location hole of the spring In, another end in contact activity rubber wheel base.
- A kind of 4. servo-controlled flexible material pressing device by formula numerical control drilling according to claim 3, it is characterised in that： The activity rubber wheel base（382）Outer end be equipped with through hole（3822）, adjusting screw (386) is installed in the through hole, is adjusted all Point-blank, the interior end in contact of the adjusting screw fixes the upper rib (3811) of briquetting to rubber tire seal face.
- A kind of 5. servo-controlled flexible material pressing device by formula numerical control drilling according to claim 2, it is characterised in that： The pinch roller seat board (37) is equipped with multiple resigning grooves (371), the rubber tire (383) of every group of pressing wheel mechanism be contained in step down it is recessed In groove, and the outermost end of each rubber tire is stretched out outside resigning groove.
- A kind of 6. servo-controlled flexible material pressing device by formula numerical control drilling according to claim 1, it is characterised in that： The both sides of the driving wheel (32) are equipped with transition wheel (39), and transition wheel is installed in adjustment seat (391), and the top of adjustment seat is equipped with Tightening piece (392), is equipped with tensioner screw (393) between tightening piece and adjustment seat.
- A kind of 7. servo-controlled flexible material pressing device by formula numerical control drilling according to claim 1, it is characterised in that： The screw（35）With translating bearing（36）Connection relation be：Nut is arranged with screw（351）, the translation bearing is spiral shell Female seat, nut are screwed together with translation bearing.
- A kind of 8. servo-controlled flexible material pressing device by formula numerical control drilling according to claim 1, it is characterised in that： The screw（35）One end pass through bearing block（352）Bottom plate is installed on, the other end passes through screw rodb base（353）It is installed on bottom plate.
- A kind of 9. servo-controlled flexible material pressing device by formula numerical control drilling according to claim 1, it is characterised in that： The servomotor（31）Quantity be 1, screw（35）Quantity is 2, by 1 servomotor and 1 belt (33), together Step drives 2 screws to rotate, and makes 2 382 synchronous translationals of movable rubber wheel base, drives a pinch roller seat board 37 to be put down along Y-axis positive direction Move.
- 10. a kind of servo-controlled flexible material pressing device by formula numerical control drilling according to claim 1, its feature exist In：The lifting cylinder（22）There are 2, each lifting cylinder passes through active joint（27）With side positioning strip（21）Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720968180.1U CN207344184U (en) | 2017-08-04 | 2017-08-04 | A kind of servo-controlled flexible material pressing device by formula numerical control drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720968180.1U CN207344184U (en) | 2017-08-04 | 2017-08-04 | A kind of servo-controlled flexible material pressing device by formula numerical control drilling |
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| CN207344184U true CN207344184U (en) | 2018-05-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107498328A (en) * | 2017-08-04 | 2017-12-22 | 南兴装备股份有限公司 | A kind of servo-controlled flexible material pressing device by formula numerical control drilling |
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2017
- 2017-08-04 CN CN201720968180.1U patent/CN207344184U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107498328A (en) * | 2017-08-04 | 2017-12-22 | 南兴装备股份有限公司 | A kind of servo-controlled flexible material pressing device by formula numerical control drilling |
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