CN105215397B - The small head end bore process of automobile gas exhausting manifold branch - Google Patents
The small head end bore process of automobile gas exhausting manifold branch Download PDFInfo
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- CN105215397B CN105215397B CN201510617760.1A CN201510617760A CN105215397B CN 105215397 B CN105215397 B CN 105215397B CN 201510617760 A CN201510617760 A CN 201510617760A CN 105215397 B CN105215397 B CN 105215397B
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- exhaust manifold
- positioning seat
- drill bit
- top surface
- cylinder
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005553 drilling Methods 0.000 claims description 9
- 210000002683 foot Anatomy 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 241000274582 Pycnanthus angolensis Species 0.000 claims description 3
- 239000011087 paperboard Substances 0.000 claims description 3
- 210000003464 cuspid Anatomy 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
- B23B39/16—Drilling machines with a plurality of working-spindles; Drilling automatons
- B23B39/161—Drilling machines with a plurality of working-spindles; Drilling automatons with parallel work spindles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
- B23B49/02—Boring templates or bushings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The present invention discloses a kind of small head end bore process of automobile gas exhausting manifold branch, and the left part of horizonal base plate is provided with sliding bottom and pusher cylinder；Sliding bottom top surface is installed with motor and drill bit guide holder, and the right side of motor is fixed with a connecting box；The active gear wheel of the output shaft right-hand member of motor is often engaged with 3 driven pinions, and this 3 driven pinions are solidly set in a corresponding drive shaft respectively；The right-hand member of every drive shaft is coaxially connected by the afterbody of a drill bit connection component and a drill bit；The left rear vertical of exhaust manifold positioning seat top surface is provided with the first locating dowel, and the right front vertical of exhaust manifold positioning seat top surface is provided with the second locating dowel；Exhaust manifold positioning seat left front is provided with the first cylinder, and exhaust manifold positioning seat right front is provided with the second cylinder, and exhaust manifold positioning seat right back is provided with the 3rd cylinder.The present invention can bore 3 mounting holes on exhaust manifold simultaneously, can thus ensure the position degree requirement of 3 mounting holes well.
Description
Technical field
The invention belongs to automobile gas exhausting manifold branch manufacture field, more particularly to a kind of small head end drillman of automobile gas exhausting manifold branch
Skill.
Background technology
Exhaust manifold is the important component of automobile engine exhaust system, and its small head end is provided with 3 mounting holes, this 3
The axial line of mounting hole is parallel, and is located proximate to.Current processing method is to drill one by one, and such processing mode is not only processed
Efficiency is low, and the position degree in 3 holes can not Reliable guarantee, be badly in need of solving above-mentioned technical barrier for this.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of automobile gas exhausting manifold branch small head end bore process, are intended to simultaneously
3 mounting holes are bored in small head end.
Technical scheme is as follows：A kind of small head end bore process of automobile gas exhausting manifold branch, it is characterised in that including such as
Lower step：
Step a：One rig is set on pedestal, and the rig includes horizonal base plate 1 and exhaust manifold positions
Seat 13, wherein horizonal base plate 1 is rectangular slab, and the horizonal base plate is fixed on pedestal by T-bolt；The horizonal base plate 1
Left part is provided with a sliding bottom 2 and a pusher cylinder 3, wherein the piston rod right-hand member of pusher cylinder 3 and the left end of sliding bottom 2
Fixed, the sliding bottom is slidably matched with the horizonal base plate 1, and can be horizontally slipped in the presence of pusher cylinder 3；The cunning
The dynamic top surface of base 2 is installed with a motor 4 and drill bit guide holder 5, and wherein motor 4 is located at the left side of drill bit guide holder 5, the motor
Right side is fixed with a connecting box 6, and the right side of connecting box 6 is installed with a taper connection bucket 7；The motor 4 it is defeated
Shaft right-hand member is installed with an active gear wheel 8, and the active gear wheel engages with 3 driven pinions 9, this 3 driven small teeth
Wheel is solidly set in a corresponding drive shaft 10 respectively, and the left end and right part of this 3 drive shafts are respectively by bearings in institute
State corresponding to connecting box 6 on boxboard；The right-hand member of the every drive shaft 10 passes through a drill bit connection component and a drill bit 11
Afterbody it is coaxially connected, the drill bit connection component is arranged on the right-hand member of taper connection bucket 7；3 on the drill bit guide holder 5
The centre bore that 12,3 drill bits 11 of a drill bushing are each passed through corresponding drill bushing 12 is separately installed with mounting hole；
The exhaust manifold positioning seat 13 fixes the right part for being located at the top surface of horizonal base plate 1, the top of the exhaust manifold positioning seat
Face is left low right high inclined-plane；The left rear vertical of the top surface of exhaust manifold positioning seat 13 is provided with the first locating dowel 14, the row
The right front vertical of gas manifold positioning seat top surface is provided with the second locating dowel 30, and the diameter of this two locating dowels is identical, and top surface is put down
Together, it is and parallel with the top surface of exhaust manifold positioning seat 13；There are 2 prelocalizations the right of first locating dowel 14 side by side from left to right
The diameter phase of alignment pin 16 after pin 15, the left of the second locating dowel 30 or so has 2 side by side, prelocalization pin and rear alignment pin
Deng, and less than the diameter of first locating dowel 14, and the either flush of all alignment pins, and with the exhaust manifold positioning seat
13 top surface is parallel, and less than the top surface of the first locating dowel 14；
The left front of exhaust manifold positioning seat 13 is provided with the first cylinder 17, and the exhaust manifold positioning seat right front is provided with the
Two cylinders 18, the right back of exhaust manifold positioning seat 13 are provided with the 3rd cylinder 19, and these three cylinders are located at the horizontal base vertically
On the top surface of plate 1, and the piston rod upper end of first, second and third cylinder 17,18,19 is respectively and fixedly provided with one piece of horizontal pressure foot 20, this three pieces
Horizontal pressure foot is used to exhaust manifold being pressed on exhaust manifold positioning seat 13；
Step b：Exhaust manifold is positioned by first and second locating dowel 14,30 and forward and backward alignment pin 15,16 first
On exhaust manifold positioning seat 13, restart first, second and third cylinder 17,18,19 and exhaust manifold is pressed on exhaust manifold
On positioning seat 13；Secondly, the motor 4 and pusher cylinder 3 are started, to be drilled on exhaust manifold, after drilling in place, control
Motor 4 is inverted, and the piston rod of pusher cylinder 3 is retracted, and then controls first, second and third cylinder 17,18,19 by exhaust manifold pine
Open, finally remove exhaust manifold from exhaust manifold positioning seat 13.
In the above-mentioned technical solutions, exhaust manifold is determined by the first locating dowel 14, the second locating dowel 30, prelocalization pin 15 and afterwards
Position pin 16 is positioned on exhaust manifold positioning seat 13, and is compressed by three pieces of horizontal pressure foots 20.During drilling, the power of motor 4 passes through
Power transmission shaft 7 is delivered in 3 drive shafts 10, so as to drive 3 drill bit synchronous axial systems.Meanwhile pusher cylinder 3 promotes sliding bottom
2 move right, and so as to drive 3 drill bit axial feeds, and then realize drilling.
Using above technical scheme, the present invention can bore 3 mounting holes on exhaust manifold simultaneously, by between 3 drill bits
Relative distance is fixed, and without repeated clamping exhaust manifold and is positioned drill bit, can thus be ensured the position of 3 mounting holes well
Degree of putting requirement, the defects of drilling one by one before avoiding well, and rig is simple in construction used by this bore process, easily
In implementation.Also, drill bit guide holder 5 synchronously moves right with drill bit, this ensures that drill bit right-hand member is positioned well, this
Sample is with regard to that can more efficiently prevent from that acutely shake occurs when the head of drill bit drills, so as to be further ensured that borehole accuracy.
Preferably, the drill bit connection component includes interior adapter sleeve 21 and clamping screw 24, wherein interior adapter sleeve 21
Centre bore is flat hole, the flat hole and the flat section tight fit of the right-hand member of drive shaft 10 and the afterbody of drill bit 11；The interior company
Female connector 21 is arranged on by bearing in the centre bore of outer adapter sleeve 22, and a radial direction block is installed with the outer wall of the outer adapter sleeve
23, it is provided with a bar hole 23a along its length on radial direction block；The clamping screw 24 passes through the spiral shell on taper connection bucket 7
After bar hole 23a on bolt via and radial direction block 23, a clamp nut 25 is set with.
Using above structure, drive shaft 10 and drill bit 11 thus can be effectively connected, to ensure the reliable of transmission, and energy
Ensure that drill bit freely rotates, and this modular construction is simple, it is easy to implement.Furthermore it is also possible to quickly and easily after more preferable abrasion
Drill bit is time saving and energy saving.
Beneficial effect：The present invention can bore 3 mounting holes on exhaust manifold simultaneously, by the relative distance between 3 drill bits
It is fixed, it can thus ensure the position degree requirement of 3 mounting holes well, the defects of drilling one by one before avoiding well, and
It is reliable that this bore process uses the drill bit of rig to connect, convenient to disassembly；In addition, drill bit guide holder is synchronous with drill bit
Move right, this ensures that being positioned well to drill bit right-hand member, can thus more efficiently prevent from the head drilling of drill bit
Shi Fasheng acutely shakes, so as to be further ensured that borehole accuracy.
Brief description of the drawings
Fig. 1 uses the structural representation of rig for the present invention.
Fig. 2 is Fig. 1 top view.
Fig. 3 is the partial enlarged drawing of part A in Fig. 1.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples：
A kind of small head end bore process of automobile gas exhausting manifold branch, it is characterised in that comprise the following steps：
Step a：One rig is set on pedestal, and as Fig. 1,2,3 can be seen that, the rig is mainly by horizontal base
Plate 1, sliding bottom 2, pusher cylinder 3, motor 4, drill bit guide holder 5, connecting box 6, taper connection bucket 7, active gear wheel 8, from
Dynamic little gear 9, drive shaft 10, drill bit 11 and drill bushing 12 etc. are formed.Wherein, horizonal base plate 1 is rectangular slab, and the horizonal base plate 1 is logical
T-bolt is crossed to be fixed on pedestal.A sliding bottom 2 and a pusher cylinder 3 are provided with the left part of horizonal base plate 1, wherein
The piston rod right-hand member of pusher cylinder 3 is fixed with the left end of sliding bottom 2.Sliding bottom 2 is slided with horizonal base plate 1 by chute and guide rail
It is dynamic to coordinate, and can be horizontally slipped in the presence of pusher cylinder 3.The top surface of sliding bottom 2 is installed with a motor 4 and drill bit is oriented to
Seat 5, wherein motor 4 are located at the left side of drill bit guide holder 5, and the right side of the motor 4 is fixed with a connecting box 6, and connecting box 6
Right side is installed with a taper connection bucket 7, is so designed to ensure that power reliably transmits.
The output shaft right-hand member of motor 4 is installed with an active gear wheel 8, the active gear wheel 8 and 3 driven pinions 9
Engagement, this 3 driven pinions 9 are solidly set in a corresponding drive shaft 10 respectively, the left end and right part of this 3 drive shafts 10
Respectively by bearings corresponding to connecting box 6 on boxboard.The right-hand member of every drive shaft 10 passes through a drill bit connection component
Coaxially connected with the afterbody of a drill bit 11, the drill bit connection component is arranged on the right-hand member of taper connection bucket 7, and the axle of drive shaft 10
The axial line of heart line and taper connection bucket 7 is on same straight line.It is separately installed with 3 mounting holes on drill bit guide holder 5
One drill bushing 12, the bigger diameter end of the right-hand member of drill bushing 12 exceed the right side of drill bit guide holder 5, and 3 drill bits 11 are each passed through correspondingly
The centre bore of drill bushing 12.
Drill bit connection component includes interior adapter sleeve 21 and clamping screw 24, wherein the centre bore of interior adapter sleeve 21 is flat
Hole, the flat hole and the flat section tight fit of the right-hand member of drive shaft 10 and the afterbody of drill bit 11.Interior adapter sleeve 21 is arranged on by bearing
In the centre bore of outer adapter sleeve 22, a radial direction block 23 is installed with the outer wall of the outer adapter sleeve, along length side on radial direction block
To being provided with a bar hole 23a.Clamping screw 24 passes through the bar hole on bolt through-hole and radial direction block 23 on taper connection bucket 7
After 23a, a clamp nut 25 is set with.
As shown in Figure 1, 2, exhaust manifold positioning seat 13 fixes the right part for being located at the top surface of horizonal base plate 1, and the exhaust manifold is determined
The top surface of position seat 13 is left low right high inclined-plane.The left rear vertical of the top surface of exhaust manifold positioning seat 13 is provided with the first locating dowel
14, the right front vertical of the top surface of exhaust manifold positioning seat 13 is provided with the second locating dowel 30, and the diameter of this two locating dowels is identical,
And either flush, and it is parallel with the top surface of exhaust manifold positioning seat 13.Before the right of first locating dowel 14 has 2 side by side from left to right
The diameter phase of alignment pin 16 after alignment pin 15, the left of the second locating dowel 30 or so has 2 side by side, prelocalization pin and rear alignment pin
Deng, and less than the diameter of the first locating dowel 14, and the either flush of all alignment pins, and with the top surface of exhaust manifold positioning seat 13
It is parallel, and less than the top surface of the first locating dowel 14.
The left front of exhaust manifold positioning seat 13 is provided with the first cylinder 17, and the exhaust manifold positioning seat right front is provided with the second gas
Cylinder 18, the right back of exhaust manifold positioning seat 13 are provided with the 3rd cylinder 19, and these three cylinders are located at the top surface of horizonal base plate 1 vertically
On.The piston rod upper end of first cylinder 17, the second cylinder 18 and the 3rd cylinder 19 is respectively and fixedly provided with one piece of horizontal pressure foot 20, this three pieces
Horizontal pressure foot is used to exhaust manifold being pressed on exhaust manifold positioning seat 13, this ensures that reliably compressing.
Step b：It will be arranged by first locating dowel 14, the second locating dowel 30, prelocalization pin 15, rear alignment pin 16 first
Gas manifold is positioned on exhaust manifold positioning seat 13, and discrimination will be vented by restarting the first cylinder 17, the second cylinder 18, the 3rd cylinder 19
Pipe is pressed on exhaust manifold positioning seat 13；Secondly, start motor 4 and pusher cylinder 3, to be drilled on exhaust manifold, bore
Hole in place after.Controlled motor 4 inverts, and pusher cylinder 3 piston rod retract, then control the first cylinder 17, the second cylinder 18,
3rd cylinder 19 unclamps exhaust manifold, finally removes exhaust manifold from exhaust manifold positioning seat 13.In stepb, it is main
The drilling depth of drill bit is seen according to macroscopic mode whether in place to judge drilling.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not limitation with the present invention, all in essence of the invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (2)
1. a kind of small head end bore process of automobile gas exhausting manifold branch, it is characterised in that comprise the following steps：
Step a：One rig is set on pedestal, and the rig includes horizonal base plate (1) and exhaust manifold positioning seat
(13), wherein horizonal base plate (1) is rectangular slab, and the horizonal base plate is fixed on pedestal by T-bolt；The horizonal base plate
(1) left part is provided with the piston rod right-hand member and cunning of a sliding bottom (2) and a pusher cylinder (3), wherein pusher cylinder (3)
Dynamic base (2) left end is fixed, and the sliding bottom is slidably matched with the horizonal base plate (1), and can be in the effect of pusher cylinder (3)
Under horizontally slip；Sliding bottom (2) top surface is installed with a motor (4) and drill bit guide holder (5), wherein motor (4) position
In drill bit guide holder (5) left side, the right side of the motor is fixed with a connecting box (6), and the right side of connecting box (6) is fixed
There is a taper connection bucket (7)；The output shaft right-hand member of the motor (4) is installed with an active gear wheel (8), the active canine tooth
Wheel is engaged with 3 driven pinions (9), and this 3 driven pinions are solidly set on a corresponding drive shaft (10) respectively, and this 3
The left end and right part of root drive shaft are respectively by bearings corresponding to the connecting box (6) on boxboard；The every driving
The right-hand member of axle (10) is coaxially connected by a drill bit connection component and the afterbody of a drill bit (11), drill bit connection component peace
Mounted in taper connection bucket (7) right-hand member；A drill bushing is separately installed with 3 mounting holes on the drill bit guide holder (5)
(12), 3 drill bits (11) are each passed through the centre bore of corresponding drill bushing (12)；
The fixed right part for being located at horizonal base plate (1) top surface of the exhaust manifold positioning seat (13), the top of the exhaust manifold positioning seat
Face is left low right high inclined-plane；The left rear vertical of exhaust manifold positioning seat (13) top surface is provided with the first locating dowel (14),
The right front vertical of the exhaust manifold positioning seat top surface is provided with the second locating dowel (30), and the diameter of this two locating dowels is identical, and
Either flush, and it is parallel with exhaust manifold positioning seat (13) top surface；The right of first locating dowel (14) is from left to right side by side
Alignment pin (16) after thering are 2 prelocalization pins (15), the second locating dowel (30) left or so to have 2 side by side, prelocalization pin and
The diameter of alignment pin is equal afterwards, and is less than the diameter of first locating dowel (14), and the either flush of all alignment pins, and with
The top surface of the exhaust manifold positioning seat (13) is parallel, and less than the top surface of the first locating dowel (14)；
Exhaust manifold positioning seat (13) left front is provided with the first cylinder (17), and the exhaust manifold positioning seat right front is provided with the
Two cylinders (18), exhaust manifold positioning seat (13) right back are provided with the 3rd cylinder (19), and these three cylinders are located at described vertically
On the top surface of horizonal base plate (1), and the piston rod upper end of first, second and third cylinder (17,18,19) is respectively and fixedly provided with one piece of horizontal pressure
Plate (20), this three pieces of horizontal pressure foots are used to exhaust manifold being pressed on exhaust manifold positioning seat (13)；
Step b：Exhaust manifold is positioned by first and second locating dowel (14,30) and forward and backward alignment pin (15,16) first
On exhaust manifold positioning seat (13), restart first, second and third cylinder (17,18,19) and exhaust manifold is pressed on exhaust
On manifold positioning seat (13)；Secondly, the motor (4) and pusher cylinder (3) are started, to be drilled on exhaust manifold, drilling
After in place, controlled motor (4) reversion, and pusher cylinder (3) piston rod retract, then control first, second and third cylinder (17,
18th, 19) exhaust manifold is unclamped, finally removed exhaust manifold from exhaust manifold positioning seat (13).
2. the small head end bore process of automobile gas exhausting manifold branch according to claim 1, it is characterised in that：The drill bit connection group
Part includes interior adapter sleeve (21) and clamping screw (24), wherein the centre bore of interior adapter sleeve (21) is flat hole, the flat hole with
The flat section tight fit of drive shaft (10) right-hand member and drill bit (11) afterbody；The interior adapter sleeve (21) is arranged on by bearing
In the centre bore of outer adapter sleeve (22), a radial direction block (23) is installed with the outer wall of the outer adapter sleeve, along length on radial direction block
Degree direction is provided with a bar hole (23a)；The clamping screw (24) passes through bolt through-hole and radial direction on taper connection bucket (7)
After bar hole (23a) on block (23), a clamp nut (25) is set with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510617760.1A CN105215397B (en) | 2015-09-24 | 2015-09-24 | The small head end bore process of automobile gas exhausting manifold branch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510617760.1A CN105215397B (en) | 2015-09-24 | 2015-09-24 | The small head end bore process of automobile gas exhausting manifold branch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105215397A CN105215397A (en) | 2016-01-06 |
| CN105215397B true CN105215397B (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510617760.1A Active CN105215397B (en) | 2015-09-24 | 2015-09-24 | The small head end bore process of automobile gas exhausting manifold branch |
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| Country | Link |
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| CN (1) | CN105215397B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116422931B (en) * | 2023-04-26 | 2024-04-16 | 绍兴上虞中隧风机有限公司 | Automatic perforating device of blade tip of axial fan impeller |
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| CN1995688A (en) * | 2006-01-05 | 2007-07-11 | 孙孝庆 | Oscillatory auger hole and dredging device |
| CN201483025U (en) * | 2009-09-10 | 2010-05-26 | 大连亚明汽车部件股份有限公司 | Double-drilling special equipment |
| CN202804244U (en) * | 2012-09-29 | 2013-03-20 | 福建鼎川机床有限公司 | Double-end special drilling machine for forged steel valve |
| CN203791665U (en) * | 2014-03-03 | 2014-08-27 | 郑州煤电股份有限公司超化煤矿 | Bidirectional gang drilling machine |
| CN204018780U (en) * | 2014-06-18 | 2014-12-17 | 鄂州万利机械有限公司 | A kind of double-ended double-station holes pressure-plate boring device |
| CN104786072A (en) * | 2015-04-09 | 2015-07-22 | 重庆民发汽车配件有限责任公司 | Flywheel central flange hole double-station drilling positioning tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1282539B1 (en) * | 1995-09-19 | 1998-03-26 | Facom S R L | AUTOMATIC DRILLING AND MILLING MACHINE FOR GLASS SLABS |
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2015
- 2015-09-24 CN CN201510617760.1A patent/CN105215397B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995688A (en) * | 2006-01-05 | 2007-07-11 | 孙孝庆 | Oscillatory auger hole and dredging device |
| CN201483025U (en) * | 2009-09-10 | 2010-05-26 | 大连亚明汽车部件股份有限公司 | Double-drilling special equipment |
| CN202804244U (en) * | 2012-09-29 | 2013-03-20 | 福建鼎川机床有限公司 | Double-end special drilling machine for forged steel valve |
| CN203791665U (en) * | 2014-03-03 | 2014-08-27 | 郑州煤电股份有限公司超化煤矿 | Bidirectional gang drilling machine |
| CN204018780U (en) * | 2014-06-18 | 2014-12-17 | 鄂州万利机械有限公司 | A kind of double-ended double-station holes pressure-plate boring device |
| CN104786072A (en) * | 2015-04-09 | 2015-07-22 | 重庆民发汽车配件有限责任公司 | Flywheel central flange hole double-station drilling positioning tool |
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| CN105215397A (en) | 2016-01-06 |
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Effective date of registration: 20171206 Address after: China town of Jiangyan District of Jiangsu Province, Taizhou Yue drum road 225516 No. 1 Applicant after: Feichuan Co., Ltd., Jiangsu Address before: 402764 Chongqing city Bishan County Dingjia Town Economic Development Zone in the sand Applicant before: Chongqing Minfa Automobile Fittings Co., Ltd. |
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