CN206169352U - Processingequipment who carries out two -way drilling to major axis class work piece - Google Patents

Processingequipment who carries out two -way drilling to major axis class work piece Download PDF

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Publication number
CN206169352U
CN206169352U CN201621136547.5U CN201621136547U CN206169352U CN 206169352 U CN206169352 U CN 206169352U CN 201621136547 U CN201621136547 U CN 201621136547U CN 206169352 U CN206169352 U CN 206169352U
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workpiece
drill bit
feed
drill
support
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CN201621136547.5U
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Inventor
张世表
王锦旗
刘振双
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Hegang Group Hengshui Plate Industry Co Ltd
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Hegang Group Hengshui Plate Industry Co Ltd
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Abstract

The utility model provides a processingequipment who carries out two -way drilling to major axis class work piece, belongs to metal drilling processing equipment technical field for carry out two -way drilling in the major axis class. Its technical scheme is: workpiece moving mechanism and back work or material rest are located the both sides of frame respectively, the last face in the frame is fixed by jig mechanism, jig mechanism is located workpiece moving mechanism and back and is connected the straight line between the work or material rest, the work piece compressing positioning mechanism install in the frame, drill bit and feed mechanism are located the both sides of jig mechanism respectively, drill bit and feed mechanism and workpiece moving mechanism, the closure of back work or material rest is perpendicular, drill bit and feed mechanism, work piece compressing positioning mechanism, workpiece moving mechanism is connected with PLC electrical control mechanism respectively. The utility model discloses the automation that can realize the work piece steps up, unclamps, the F. F. Of drill bit, attack, the rewind down, the accurate of work piece is moved, guaranteed the work piece on the porose central line of institute in a plane, have easy and simple to handle, advantages such as the operation is reliable and stable, the machining precision is high, production efficiency height.

Description

A kind of processing unit (plant) that long-axle workpieces are carried out with two-way drilling
Technical field
This utility model is related to a kind of processing unit (plant) that two-way drilling is carried out on elongated round steel, belongs to metal Drilling operation Equipment technical field.
Background technology
At present, in field of machining, the processing of aperture on some workpiece is remained and manually operated in bench drill Into having that difficulty of processing is big, expend man-hour length, the shortcomings of processing specification is poor, precision is not high.Have special especially for some Many apertures are thick with the axial direction on the workpiece of requirement, such as elongated round steel, and according to technological requirement, these apertures are needed along circle Steel shaft line or so counter bored holes, and centerline hole must be in a plane, and this is manually to be difficult to complete using bench drill 's.The development for producing therewith and the requirement to product quality are improved constantly, and traditional processing technique is due to low production efficiency, processing High cost, product quality such as are difficult to ensure that at the defect, have been difficult to meet Production requirement, it is quite necessary to which exploitation design one kind is to length The equipment that axle class carries out two-way Drilling operation, to meet the needs of production.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of processing that long-axle workpieces are carried out with two-way drilling Device, this processing unit (plant) can be realized while carry out two-way drilling to workpiece, and process time is short, high precision, substantially increases Production efficiency, reduces production cost, meets requirement of the product to yield and quality.
Solving the technical scheme of above-mentioned technical problem is:
A kind of processing unit (plant) that long-axle workpieces are carried out with two-way drilling, it includes frame, drill bit and feed mechanism, drill jig Mechanism, Work-sheet pressing detent mechanism, workpiece travel mechanism, rear bin, PLC electrical control mechanisms, workpiece travel mechanism and rear bin point Not Wei Yu frame both sides, point-blank, drill jig mechanism is fixed on machine to the length direction of workpiece travel mechanism and rear bin The upper face of frame, drill jig mechanism in workpiece travel mechanism with the connection straight line of rear bin, install by Work-sheet pressing detent mechanism In frame, Work-sheet pressing detent mechanism is located at drill jig mechanism near the side of workpiece travel mechanism, drill bit and feed mechanism point Not Wei Yu drill jig mechanism both sides, drill bit and feed mechanism and drill jig mechanism, Work-sheet pressing detent mechanism, workpiece travel mechanism, Afterwards the closure of bin is vertical, and drill bit and feed mechanism, Work-sheet pressing detent mechanism, workpiece travel mechanism are electric with PLC respectively Control mechanism is connected.
The above-mentioned processing unit (plant) that long-axle workpieces are carried out with two-way drilling, the drill bit and feed mechanism are identical two Point, respectively positioned at the both sides of drill jig mechanism, every part is respectively by drill bit, drill bit base, slide plate, slide block, feed straight line for two parts Guide rail, feed leading screw, feed screw, feed leading screw support, feed screw support, feed motor, electric machine support composition, drill bit peace It is mounted on drill bit base, drill bit base is fixedly connected with slide plate, slide plate bottom connection sliding block, slide block is embedded in two parallel feeds In line slideway, feed line slideway is fixed on frame surface, feed line slideway and workpiece travel mechanism, the connection of rear bin Direction is vertical, and electric machine support is fixed on frame surface, and feed motor is arranged on electric machine support, and the motor shaft of feed motor passes through Shaft coupling is connected with one end of feed leading screw, and the other end for being fed leading screw is arranged on frame surface by feed leading screw support, Feed screw is sleeved on feed leading screw, and feed screw is connected by being fed screw support with the bottom surface of slide plate, two-part Drill bit is relative, and the axis of two drill bits is in same level.
The above-mentioned processing unit (plant) that long-axle workpieces are carried out with two-way drilling, the drill jig mechanism by drill bit guiding module, swivel nut, Jig seat is constituted, and jig seat is fixedly connected on frame surface, and workpiece is placed on top surface in jig seat, and swivel nut is consolidated by hexagon socket head cap screw It is scheduled in jig seat, drill bit guiding module is clamped in jig seat by swivel nut, drill guide bore is arranged at drill bit guiding module top, and drill bit is led The diameter of diameter and drill bit to hole matches, drill guide bore and drill bit on same central axis, drill guide bore with put Put the side surface of workpiece of top surface in jig seat relative.
The above-mentioned processing unit (plant) that long-axle workpieces are carried out with two-way drilling, the Work-sheet pressing detent mechanism is by cylinder, gas Cylinder fixed plate, workpiece pressure head, air cylinder support, cushion block composition, cylinder is fixed in air cylinder fixed plate, and air cylinder fixed plate is propped up with cylinder Frame is connected, and air cylinder support is fixed in frame, and workpiece pressure head is connected to the front end of cylinder push-rod, and there is pad workpiece pressure head lower section Block, workpiece is located between workpiece pressure head and cushion block, and workpiece pressure head is vertically opposite with workpiece.
The above-mentioned processing unit (plant) that long-axle workpieces are carried out with two-way drilling, the workpiece travel mechanism is by workpiece movement Frame, workpiece moving guide rail, mobile slide block, workpiece movement leading screw, workpiece movement leading screw support, workpiece movement screw, slide block are fixed Plate, workpiece fixing seat, connecting plate, workpiece mobile motor composition, workpiece moving guide rail is arranged on workpiece movement support, mobile to slide Block is connected with workpiece moving guide rail, and the side of slide block fixed plate is connected with mobile slide block, the lower face of slide block fixed plate with Workpiece movable wire parent phase connects, and workpiece movement nut sleeve is mounted on workpiece movement leading screw, and one end of workpiece movement leading screw is by workpiece Mobile leading screw support is supported, and the other end of workpiece movement leading screw is connected by shaft coupling with the motor shaft of workpiece mobile motor, Workpiece mobile motor is fixed on workpiece movement support, and the opposite side of slide plate fixed plate is connected by connecting plate with workpiece fixing seat Connect, workpiece is placed in workpiece fixing seat.
The above-mentioned processing unit (plant) that long-axle workpieces are carried out with two-way drilling, it also has cooling and lubricating device, cooling and lubricating dress Put and be connected with drill bit and feed mechanism, workpiece travel mechanism respectively.
The beneficial effects of the utility model are:
This utility model is fixed on workpiece to be processed in the workpiece fixing seat of workpiece travel mechanism, is set by PLC The technical parameters such as pitch-row, hole count, being installed drill bit and adjusts to the correct position of drill bit guiding module, the work of Work-sheet pressing detent mechanism By Workpiece clamping, drill bit auto-feed starts drilling to part pressure head, reaches drill bit self-return behind setting position, and workpiece is moved with workpiece Motivation structure runs to next hole position and repeats the above-mentioned course of processing automatically, until completion of processing.This utility model is using two-way Simultaneously Drilling operation, it is ensured that drilling has the advantages that process time is short, high precision in same level, is guaranteeing processing On the premise of precision, operating process is simplified, substantially increase production efficiency, reduce production cost, meet product to producing The requirement of amount and quality.
Description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the structural representation of drill bit and feed mechanism;
Fig. 4 is the structural representation of drill jig mechanism;
Fig. 5 is the structural representation of Work-sheet pressing detent mechanism;
The structural representation of Tu6Shi workpiece travel mechanism;
Fig. 7 is the side view of Fig. 6.
Labelling is as follows in figure:Frame 1, drill bit and feed mechanism 2, drill jig mechanism 3, Work-sheet pressing detent mechanism 4, workpiece are moved Motivation structure 5, rear bin 6, cooling and lubricating device 7, drill bit 8, drill bit base 9, slide plate 10, slide block 11, feed line slideway 12, give Enter leading screw 13, feed screw 14, feed leading screw support 15, feed screw support 16, feed motor 17, electric machine support 18, drill bit Guiding module 19, swivel nut 20, jig seat 21, cylinder 22, air cylinder fixed plate 23, workpiece pressure head 24, air cylinder support 25, cushion block 26, work Part movement support 27, workpiece moving guide rail 28, mobile slide block 29, workpiece movement leading screw 30, workpiece movement leading screw support 31, workpiece Mobile screw 32, slide block fixed plate 33, workpiece fixing seat 34, connecting plate 35, workpiece mobile motor 36, workpiece 37.
Specific embodiment
This utility model is moved by frame 1, drill bit and feed mechanism 2, drill jig mechanism 3, Work-sheet pressing detent mechanism 4, workpiece Motivation structure 5, rear bin 6, cooling and lubricating device 7, PLC electrical control mechanisms composition.
Fig. 1,2 show that, respectively positioned at the both sides of frame 1, workpiece travel mechanism 5 is with after for workpiece travel mechanism 5 and rear bin 6 The length direction of bin 6 is point-blank.Workpiece is moved in frame 1 from workpiece travel mechanism 5, and workpiece is in frame 1 Bore operation is carried out, then workpiece continues on the rear bin 6 of reach.
Fig. 1,2 show that drill jig mechanism 3 is fixed on the upper face of frame 1, drill jig mechanism 3 be located at workpiece travel mechanism 5 with it is rear On the connection straight line of bin 6, workpiece is placed on drill jig mechanism 3 carries out bore operation.
Fig. 1,2 show that Work-sheet pressing detent mechanism 4 is arranged in frame 1, and Work-sheet pressing detent mechanism 4 is located at drill jig machine Near the side of workpiece travel mechanism 5, workpiece is fixed structure 3 before bore operation by Work-sheet pressing detent mechanism 4.
Fig. 1,2 show that drill bit and feed mechanism 2 are respectively positioned at the both sides of drill jig mechanism 3, drill bit and feed mechanism 2 and work Part moving direction forward is vertical, and drill bit and feed mechanism 2 carry out vertical drilling to workpiece in the horizontal direction from the both sides of workpiece.
Fig. 1,2 show that cooling and lubricating device 7 is connected respectively with drill bit and feed mechanism 2, workpiece travel mechanism 5, to boring The part of head and feed mechanism 2 and workpiece travel mechanism 5 is cooled down and lubricated.
Fig. 3 shows that drill bit and feed mechanism 2 are identical two parts, and two parts are respectively positioned at the both sides of drill jig mechanism 3. Per part respectively by drill bit 8, drill bit base 9, slide plate 10, slide block 11, feed line slideway 12, feed leading screw 13, feed screw 14th, it is fed leading screw support 15, feed screw support 16, feed motor 17, electric machine support 18 to constitute.
Fig. 3 shows that drill bit 8 is arranged on drill bit base 9, and drill bit base 9 is fixedly connected with slide plate 10, and the bottom of slide plate 10 connects Four slide blocks 11 are connect, four slide blocks 11 are embedded in two parallel feed line slideways 12, feed line slideway 12 is fixed on machine The surface of frame 1, feed line slideway 12 is vertical with the closure of workpiece travel mechanism 5, rear bin 6.Slide plate 10 and the band of slide block 11 Dynamic drill bit base 9 and drill bit 8 can carry out feed movement on feed line slideway.Two-part drill bit 8 is relative, two drill bits 8 axis is in same level.
Fig. 3 shows that electric machine support 18 is fixed on the surface of frame 1, and feed motor 17 is arranged on electric machine support 18, feed electricity The motor shaft of machine 17 is connected by shaft coupling with one end of feed leading screw 13, is fed the other end of leading screw 13 by being fed leading screw Support 15 is arranged on the surface of frame 1, and feed screw 14 is sleeved on feed leading screw 13, and feed screw 14 is by being fed screw support 16 are connected with the bottom surface of slide plate 10.Feed motor 17 drives feed leading screw 13 to rotate, and feed screw 14 is moved along leading screw 13 is entered Dynamic, feed screw 14 drives slide plate 10 to move, so as to realize the feed action of drill bit 8.
Fig. 4 shows that drill jig mechanism 3 is made up of drill bit guiding module 19, swivel nut 20, jig seat 21.Jig seat 21 is fixedly connected On the surface of frame 1, workpiece 37 is placed on top surface in jig seat 21, and swivel nut 20 is fixed in jig seat 21 by hexagon socket head cap screw, high The drill bit guiding module 19 that fast steel makes is clamped in jig seat 21 by swivel nut 20, and drill guide bore is arranged at the top of drill bit guiding module 19, The diameter of drill guide bore matches with the diameter of drill bit 8, and drill guide bore with drill bit 8 on same central axis, lead by drill bit The side of workpiece 37 that Xiang Kongyu is placed on top surface in jig seat 21 is relative.During drilling, drill bit guiding module 19 plays leading to drill bit 8 To effect, drill bit 8 drills through drill guide bore to workpiece 37, prevents drilling from glancing off.
Fig. 5 shows, Work-sheet pressing detent mechanism 4 by cylinder 22, air cylinder fixed plate 23, workpiece pressure head 24, air cylinder support 25, Cushion block 26 is constituted.Cylinder 22 is fixed in air cylinder fixed plate 23, and air cylinder fixed plate 23 is connected with air cylinder support 25, air cylinder support 25 are fixed in frame 1.Workpiece pressure head 24 is connected to the front end of cylinder push-rod, and there are cushion block 26, workpiece 37 in the lower section of workpiece pressure head 24 Between workpiece pressure head and cushion block, workpiece pressure head 24 is vertically opposite with workpiece 37.Workpiece 37 is moved into place before drilling, then It is fixed in the presence of cylinder 22 by workpiece pressure head 24, then carries out drilling operation.
Fig. 6,7 show that workpiece travel mechanism 5 is by workpiece movement support 27, workpiece moving guide rail 28, mobile slide block 29, work Part movement leading screw 30, workpiece movement leading screw support 31, workpiece movement screw 32, slide block fixed plate 33, workpiece fixing seat 34, connection Plate 35, workpiece mobile motor 36 are constituted.Workpiece moving guide rail 28 is arranged on workpiece movement support 27, moves slide block 29 and workpiece Moving guide rail 28 is connected, and the side of slide block fixed plate 33 is connected with mobile slide block 29, the lower face of slide block fixed plate 33 with Workpiece movement screw 32 is connected, and workpiece movement screw 32 is sleeved on workpiece movement leading screw 30, and the one of workpiece movement leading screw 30 End is supported by workpiece movement leading screw support 31, and the other end of workpiece movement leading screw 30 is by shaft coupling and workpiece mobile motor 36 Motor shaft is connected, and workpiece mobile motor 36 is fixed on workpiece movement support 27, and the opposite side of slide plate fixed plate 33 is by connecting Fishplate bar 35 is connected with workpiece fixing seat 34, and workpiece 37 is placed in workpiece fixing seat 34.When workpiece 37 needs to move, workpiece is moved Galvanic electricity machine 36 drives workpiece movement leading screw 30 to rotate, and workpiece moves screw 32 and moves along workpiece movement leading screw 30, workpiece movement Screw 32 is moved with movable slider fixed plate 33, and slide plate fixed plate 33 drives workpiece fixing seat 34 and workpiece 37 to move together.
The course of work of the present utility model is as follows:
Workpiece to be processed 37 is fixed in the workpiece fixing seat 34 of workpiece travel mechanism 5, by PLC set pitch-row, The technical parameters such as hole count, the workpiece mobile motor 36 of workpiece travel mechanism 5 drives workpiece movement leading screw 30 to rotate, workpiece movable wire Female 32 drive workpiece fixing seat 34 and workpiece 37 to move to precalculated position by slide block fixed plate 33;Work-sheet pressing detent mechanism 4 Cylinder 22 start, workpiece pressure head 24 is fixedly clamped workpiece 37;The feed motor 17 of drill bit and feed mechanism 2 drives feed silk Thick stick 13 is rotated, and feed screw 14 drives slide plate 10 to move, and slide plate 10 and slide block 11 drive drill bit base 9 and drill bit 8 straight in feed Feed movement is carried out on line guide rail, so as to realize the feed action of drill bit 8, the auto-feed of drill bit 8 starts drilling, reaches setting position Postpone the self-return of drill bit 8.
Workpiece 37 runs to next hole position and repeats the above-mentioned course of processing automatically with workpiece travel mechanism 5, until processing Finish.
Drill bit of the present utility model and feed mechanism 2, Work-sheet pressing detent mechanism 4, workpiece travel mechanism 5 respectively with PLC Electrical control mechanism is connected, and by PLC electrical control mechanisms the action launching and stopping of each several part are controlled, and is capable of achieving the automatic of workpiece 37 and adds Tightly, unclamp, the F.F. of drill bit 8, attack, rewind, the accurate movement of workpiece 37, each cycle of operation can complete two holes plus Work, it is ensured that in a plane, with easy to operate, stable equipment operation can for the centrage in all of processing hole on workpiece 37 Lean on, Drilling operation high precision, production efficiency is high, the advantages of low production cost.

Claims (6)

1. a kind of processing unit (plant) that long-axle workpieces are carried out with two-way drilling, it is characterised in that:It includes frame(1), drill bit and Feed mechanism(2), drill jig mechanism(3), Work-sheet pressing detent mechanism(4), workpiece travel mechanism(5), rear bin(6), PLC it is automatically controlled Mechanism, workpiece travel mechanism(5)With rear bin(6)Frame is located at respectively(1)Both sides, workpiece travel mechanism(5)With rear bin (6)Length direction point-blank, drill jig mechanism(3)It is fixed on frame(1)Upper face, drill jig mechanism(3)Positioned at work Part travel mechanism(5)With rear bin(6)Connection straight line on, Work-sheet pressing detent mechanism(4)Installed in frame(1)On, workpiece Pressed positioning mechanism(4)Positioned at drill jig mechanism(3)Near workpiece travel mechanism(5)Side, drill bit and feed mechanism(2)Respectively Positioned at drill jig mechanism(3)Both sides, drill bit and feed mechanism(2)With drill jig mechanism(3), Work-sheet pressing detent mechanism(4), workpiece Travel mechanism(5), rear bin(6)Closure it is vertical, drill bit and feed mechanism(2), Work-sheet pressing detent mechanism(4), work Part travel mechanism(4)It is connected with PLC electrical control mechanisms respectively.
2. the processing unit (plant) that long-axle workpieces are carried out with two-way drilling according to claim 1, it is characterised in that:The brill Head and feed mechanism(2)For identical two parts, two parts are respectively positioned at drill jig mechanism(3)Both sides, per part respectively by boring Head(8), drill bit base(9), slide plate(10), slide block(11), feed line slideway(12), feed leading screw(13), feed screw (14), feed leading screw support(15), feed screw support(16), feed motor(17), electric machine support(18)Composition, drill bit(8) Installed in drill bit base(9)On, drill bit base(9)With slide plate(10)It is fixedly connected, slide plate(10)Bottom connection sliding block(11), it is sliding Block(11)It is embedded in two parallel feed line slideways(12)In, it is fed line slideway(12)It is fixed on frame(1)Surface, feed Line slideway(12)With workpiece travel mechanism(5), rear bin(6)Closure it is vertical, electric machine support(18)It is fixed on frame (1)Surface, is fed motor(17)Installed in electric machine support(16)On, it is fed motor(17)Motor shaft by shaft coupling with feed Leading screw(13)One end be connected, be fed leading screw(13)The other end by be fed leading screw support(15)Installed in frame(1)Table Face, is fed screw(14)It is sleeved on feed leading screw(13)On, it is fed screw(14)By being fed screw support(15)With slide plate (10)Bottom surface be connected, two-part drill bit(8)Relatively, two drill bits(8)Axis in same level.
3. the processing unit (plant) that long-axle workpieces are carried out with two-way drilling according to claim 2, it is characterised in that:The brill Mold mechanism(3)By drill bit guiding module(19), swivel nut(20), jig seat(21)Composition, jig seat(21)It is fixedly connected on frame(1) Surface, workpiece(37)It is placed on jig seat(21)Upper top surface, swivel nut(20)Jig seat is fixed on by hexagon socket head cap screw(21)On, bore Head guiding module(19)By swivel nut(20)It is clamped in jig seat(21)On, drill bit guiding module(19)Drill guide bore, drill bit are arranged at top The diameter and drill bit of pilot hole(8)Diameter match, drill guide bore and drill bit(8)On same central axis, drill bit is led Xiang Kongyu is placed on jig seat(21)The workpiece of upper top surface(37)Side is relative.
4. the processing unit (plant) that long-axle workpieces are carried out with two-way drilling according to claim 3, it is characterised in that:The work Part pressed positioning mechanism(4)By cylinder(22), air cylinder fixed plate(23), workpiece pressure head(24), air cylinder support(25), cushion block(26) Composition, cylinder(22)It is fixed on air cylinder fixed plate(23)On, air cylinder fixed plate(23)With air cylinder support(25)It is connected, cylinder Frame(25)It is fixed on frame(1)On, workpiece pressure head(24)It is connected to the front end of cylinder push-rod, workpiece pressure head(24)There is cushion block lower section (26), workpiece(37)Positioned at workpiece pressure head(24)And cushion block(26)Between, workpiece pressure head(24)With workpiece(37)It is vertically opposite.
5. the processing unit (plant) that long-axle workpieces are carried out with two-way drilling according to claim 4, it is characterised in that:The work Part travel mechanism(5)Support is moved by workpiece(27), workpiece moving guide rail(28), mobile slide block(29), workpiece movement leading screw (30), workpiece movement leading screw support(31), workpiece movement screw(32), slide block fixed plate(33), workpiece fixing seat(34), connection Plate(35), workpiece mobile motor(36)Composition, workpiece moving guide rail(28)Support is moved installed in workpiece(27)On, mobile slide block (29)With workpiece moving guide rail(28)It is connected, slide block fixed plate(33)Side and mobile slide block(29)It is connected, slide block is solid Fixed board(33)Lower face and workpiece move screw(32)It is connected, workpiece movement screw(32)It is sleeved on workpiece movement leading screw (30)On, workpiece movement leading screw(30)One end by workpiece move leading screw support(31)Support, workpiece movement leading screw(30)It is another One end is by shaft coupling and workpiece mobile motor(36)Motor shaft be connected, workpiece mobile motor(36)It is fixed on workpiece movement Support(27)On, slide plate fixed plate(33)Opposite side pass through connecting plate(35)With workpiece fixing seat(34)It is connected, workpiece (37)It is placed on workpiece fixing seat(34)In.
6. the processing unit (plant) that long-axle workpieces are carried out with two-way drilling according to claim 5, it is characterised in that:It also has Cooling and lubricating device(7), cooling and lubricating device(7)Respectively with drill bit and feed mechanism(2), workpiece travel mechanism(5)It is connected.
CN201621136547.5U 2016-10-19 2016-10-19 Processingequipment who carries out two -way drilling to major axis class work piece Active CN206169352U (en)

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Application Number Priority Date Filing Date Title
CN201621136547.5U CN206169352U (en) 2016-10-19 2016-10-19 Processingequipment who carries out two -way drilling to major axis class work piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621136547.5U CN206169352U (en) 2016-10-19 2016-10-19 Processingequipment who carries out two -way drilling to major axis class work piece

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Publication Number Publication Date
CN206169352U true CN206169352U (en) 2017-05-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112453470A (en) * 2020-10-15 2021-03-09 湖北博英精工科技股份有限公司 Automatic punching device for piston pin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112453470A (en) * 2020-10-15 2021-03-09 湖北博英精工科技股份有限公司 Automatic punching device for piston pin

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