CN108015310A - A kind of double drilling machine processing platforms of drilling machine - Google Patents
A kind of double drilling machine processing platforms of drilling machine Download PDFInfo
- Publication number
- CN108015310A CN108015310A CN201711296064.0A CN201711296064A CN108015310A CN 108015310 A CN108015310 A CN 108015310A CN 201711296064 A CN201711296064 A CN 201711296064A CN 108015310 A CN108015310 A CN 108015310A
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- China
- Prior art keywords
- drilling machine
- fixed
- workbench
- support base
- processing platforms
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005553 drilling Methods 0.000 title claims abstract description 68
- 210000000078 claw Anatomy 0.000 claims abstract description 15
- 235000005121 Sorbus torminalis Nutrition 0.000 claims description 4
- 244000152100 Sorbus torminalis Species 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 23
- 230000009471 action Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding 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
- B23B39/22—Drilling machines with a plurality of working-spindles; Drilling automatons with working-spindles in opposite headstocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/28—Electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a kind of drilling machine pair drilling machine processing platforms, including:Workbench, the workbench are fixed in rack, and the middle part of the workbench is equipped with groove, and drilling machine is symmetrically installed with the table surface of the groove both sides;Support base, the support base is equipped with leading screw, sliding sleeve is threaded with the leading screw, the sliding sleeve is fixed on the bottom of Work piece fixing platform, and the both ends of the Work piece fixing platform are equipped with fixed plate, cylinder is provided with the outside of the fixed plate, the telescopic end of the cylinder is fixed with claw, the lower rotation of the support base is connected to the top of screw rod, and the screw rod is engaged with turbine, and the turbine is fixed on the output terminal of the first stepper motor.Workpiece of the present invention is fixed, and in boring procedure, workpiece can be reconciled up and down, realize to carrying out drilling operation at workpiece diverse location, under the action of two drilling machines, Drilling operation can be carried out to the both sides of workpiece at the same time, improve the processing efficiency of drilling.
Description
Technical field
The invention belongs to machinery to put technical field, and in particular to a kind of double drilling machine processing platforms of drilling machine.
Background technology
Mechanical processing refers to the process of be changed the appearance and size or performance of workpiece by a kind of mechanical equipment.By adding
Difference in work mode can be divided into machining and pressure processing.The production process of machine refers to make from raw material (or semi-finished product)
Into all processes of product.Include the transport and preservation of raw material for production of machinery, the preparation of production, the manufacture of blank,
The processing and heat treatment of part, the assembling and debugging of product, the content such as paint and packaging.The content of production process is quite varied,
Principle and method the tissue production of modern enterprise system analysis engineering and Instructing manufacture, regard production process as one with defeated
The production system for entering and exporting, processes the machinery of needs by digital display milling machine, digital display form grinder, digital display lathe, electric discharge machine, ten thousand
Can grinding machine, machining center, laser welding, in walk conventional machinery silk, fast wire winding, slow wire feeding, cylindrical grinder, internal grinder, precision
Lathe etc., can carry out the processing such as the car of precision component, milling, plane, mill, and such machinery is good at the car of precision component, milling, plane, mill etc.
Processing, can process various irregular shape parts, machining accuracy is up to 2 μm.In process of production, every change production object
Shape, size, position and property etc., the process for becoming finished product or semi-finished product is known as technical process.It is to produce
The major part of journey.Technical process can be divided into the technical process such as casting, forging, punching press, welding, mechanical processing, assembling again, machinery
Process for making generally refers to the summation of the machining work process of part and the assembling technology procedure of machine, other processes
Then it is known as supporting process, such as transport, keeping, power supply, maintenance of equipment etc..Technical process is suitable by one or several again
The process composition of sequence arrangement, a process several work steps by being made of.
In the manufacturing procedure to drill to workpiece, existing drilling machine platform can only drill the side of workpiece,
After the completion of one side brill do-nothing operation can only be waited when needing the another side to workpiece to drill, workpiece is retightened, could be right
The another side of workpiece drills, and elastic workpiece has fixed illusive hidden danger repeatedly, when needing batch processing to process, bores
Hole efficiency is low.
The content of the invention
It is an object of the invention to provide a kind of drilling machine pair drilling machine processing platforms, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical solution:A kind of double drilling machine processing platforms of drilling machine, including:
Workbench, the workbench are fixed in rack, and the middle part of the workbench is equipped with groove, the groove both sides
Drilling machine is symmetrically installed with table surface;
Support base, the support base are equipped with leading screw, and one end of the leading screw and the output terminal of the second stepper motor are fixed
Connect, be threaded with sliding sleeve on the leading screw, the sliding sleeve is fixed on the bottom of Work piece fixing platform, the Work piece fixing platform
Both ends are equipped with fixed plate, are provided with cylinder on the outside of the fixed plate, the telescopic end of the cylinder is fixed with claw, the support base
Lower rotation be connected to the top of screw rod, the screw rod is engaged with turbine, and the turbine is fixed on the defeated of the first stepper motor
Outlet.
Preferably, integrated setting has anti-skid chequer on the madial wall of the claw.
Preferably, the lower surface both sides integrated setting of the Work piece fixing platform has chimb, between the chimb and sliding sleeve
Form sliding slot.
Preferably, the sliding slot and the slide of support base both sides are slidably connected.
Preferably, positioning plate is fixed with by fixed link in the rack, first stepper motor is fixed on positioning plate
On.
Preferably, the bottom side of the support base is fixed with guide rod, and the bottom of the guide rod is movably connected on positioning plate.
Preferably, the drilling machine is detachably secured on workbench by bolt, and the workbench is equipped with mounting groove.
Preferably, the screw rod passes through positioning plate, and the bottom of the screw rod is fixed with limited block.
The technique effect and advantage of the present invention:
1st, claw is promoted to carry out clamping fixed to workpiece by cylinder, claw is V-shaped, can fix workpiece and be scheduled on claw
Interior, workpiece is fixed;
2nd, in boring procedure, turbine is driven by the first stepper motor, and then utilize gear driving screw rod so that screw rod
Drive support base to rise, and then adjust the height of workpiece on Work piece fixing platform, realize to carrying out drilling behaviour at workpiece different height
Make, then by the second stepper motor drive leading screw, by drive leading screw and then drive sliding sleeve move so that Work piece fixing platform along
Slide on support base is moved, and then adjusts the horizontal level of workpiece, is realized to carrying out drilling behaviour at workpiece diverse location
Make;
3rd, under the action of two drilling machines, Drilling operation can be carried out to the both sides of workpiece at the same time, improves adding for drilling
Work efficiency rate.
Brief description of the drawings
Fig. 1 is a kind of overlooking the structure diagram of the drilling machine of the present invention with double drilling machine processing platforms;
Fig. 2 is a kind of side structure schematic view of the drilling machine of the present invention with double drilling machine processing platforms;
Fig. 3 is a kind of drilling machine mounting structure schematic diagram of the drilling machine of the present invention with double drilling machine processing platforms;
Fig. 4 is a kind of Work piece fixing platform structure diagram of the drilling machine of the present invention with double drilling machine processing platforms;
Fig. 5 is a kind of support base overlooking the structure diagram of the drilling machine of the present invention with double drilling machine processing platforms.
In figure:1 workbench, 101 mounting grooves, 2 drilling machines, 3 grooves, 4 Work piece fixing platforms, 401 fixed plates, 402 chimbs, 403
Sliding slot, 5 cylinders, 6 claws, 7 racks, 8 fixed links, 9 positioning plates, 10 screw rods, 11 guide rods, 12 support bases, 121 slides, 13 first
Stepper motor, 14 turbines, 15 leading screws, 16 sliding sleeves, 17 second stepper motors, 18 limited blocks.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
As shown in Figs. 1-5, the double drilling machine processing platforms of a kind of drilling machine, including:
Workbench 1, the workbench 1 are fixed in rack 7, and the middle part of the workbench 1 is equipped with groove 3, the groove 3
Drilling machine 2 is symmetrically installed with 1 surface of workbench of both sides;
Support base 12, the support base 12 are equipped with leading screw 15, one end of the leading screw 15 and the second stepper motor 17
Output terminal is fixedly connected, and sliding sleeve 16 is threaded with the leading screw 15, and the sliding sleeve 16 is fixed on the bottom of Work piece fixing platform 4
Portion, the both ends of the Work piece fixing platform 4 are equipped with fixed plate 401, and the outside of fixed plate 401 is provided with cylinder 5, the cylinder 5
Telescopic end be fixed with claw 6, the lower rotation of the support base 12 is connected to the top of screw rod 10, the screw rod 10 and turbine
14 engagements, the turbine 14 are fixed on the output terminal of the first stepper motor 13.
Integrated setting has anti-skid chequer on the madial wall of the claw 6, and claw 6 is V-shaped, when cylinder 5 stretches out, can incite somebody to action
Workpiece is fixed and is scheduled in claw 6, and workpiece is fixed, and the anti-skid chequer on claw 6 can prevent workpiece from skidding, and is improved and is stablized
Property.
The lower surface both sides integrated setting of the Work piece fixing platform 4 has a chimb 402, the chimb 402 and sliding sleeve 16 it
Between formed sliding slot 403, be bonded to each other between Work piece fixing platform 4 and support base 12, when the second stepper motor 17 rotates, driving silk
Thick stick 15 so drive sliding sleeve 16 move so that Work piece fixing platform 4 is moved along support base 12.
The sliding slot 403 and the slide 121 of 12 both sides of support base are slidably connected, and sliding slot 403 is mutually embedding with slide 121
Close, the smoothness of Work piece fixing platform 4 can be improved, be conducive to improve control accuracy to the displacement distance of workpiece, and then ensure that
The precision of drilling, improves processing quality.
Positioning plate 9 is fixed with by fixed link 8 in the rack 7, first stepper motor 14 is fixed on positioning plate 9
On, turbine 14 is driven by the first stepper motor 14, and then utilize gear driving screw rod 10 so that screw rod 10 drives support base 12
Rise, and then adjust the height of workpiece on Work piece fixing platform 4, realize to carrying out drilling operation at workpiece different height.
The bottom side of the support base 12 is fixed with guide rod 11, and the bottom of the guide rod 11 is movably connected on positioning plate 9,
It is slidably connected between guide rod 11 and positioning plate 9, can prevents support base 12 from occurring during moving up and down certainly by guide rod 11
Turn, ensure that support base 12 only moves up and down.
The drilling machine 2 is detachably secured on workbench 1 by bolt, and the workbench 1 is equipped with mounting groove 101, is led to
The position of adjustment drilling machine 2 is crossed, the distance between drilling machine 2 and workpiece can be adjusted.
The screw rod 10 passes through positioning plate 9, and the bottom of the screw rod 10 is fixed with limited block 18, can by limited block 18
It is spacing with the formation progress to screw rod 10, prevent screw rod 10 from exceeding stroke, equipment is protected.
Specifically, in use, workpiece is placed on Work piece fixing platform 4, by the promotion claw 6 of cylinder 5 to workpiece progress
Clamping fixed, in boring procedure, drives turbine 14, and then using gear driving screw rod 10, make by the first stepper motor 13
Obtaining screw rod 10 drives support base 12 to rise, and then adjusts the height of workpiece on Work piece fixing platform 4, realizes at workpiece different height
Drilling operation is carried out, then leading screw 15 is driven by the second stepper motor 17, drives sliding sleeve 16 to move by driving leading screw 15,
So that Work piece fixing platform 4 is moved along the slide 121 on support base 12, and then adjusts the horizontal level of workpiece, realization pair
Drilling operation is carried out at workpiece diverse location, under the action of two drilling machines 2, the both sides of workpiece can be carried out at the same time drilling plus
Work, improves the processing efficiency of drilling.
Finally it should be noted that:The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To modify to the technical solution described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic,
Within the spirit and principles of the invention, any modification, equivalent replacement, improvement and so on, should be included in the present invention's
Within protection domain.
Claims (8)
- A kind of 1. double drilling machine processing platforms of drilling machine, it is characterised in that including:Workbench (1), the workbench (1) are fixed in rack (7), and the middle part of the workbench (1) is equipped with groove (3), institute State and be symmetrically installed with drilling machine (2) on workbench (1) surface of groove (3) both sides;Support base (12), the support base (12) are equipped with leading screw (15), one end and the second stepper motor of the leading screw (15) (17) output terminal is fixedly connected, and sliding sleeve (16) is threaded with the leading screw (15), and the sliding sleeve (16) is fixed on workpiece The bottom of fixed station (4), the both ends of the Work piece fixing platform (4) are equipped with fixed plate (401), pacify on the outside of the fixed plate (401) Equipped with cylinder (5), the telescopic end of the cylinder (5) is fixed with claw (6), and the lower rotation of the support base (12) is connected to spiral shell The top of bar (10), the screw rod (10) are engaged with turbine (14), and the turbine (14) is fixed on the first stepper motor (13) Output terminal.
- A kind of 2. double drilling machine processing platforms of drilling machine according to claim 1, it is characterised in that:The claw (6) it is interior Integrated setting has anti-skid chequer on side wall.
- A kind of 3. double drilling machine processing platforms of drilling machine according to claim 1, it is characterised in that:The Work piece fixing platform (4) lower surface both sides integrated setting has chimb (402), and sliding slot is formed between the chimb (402) and sliding sleeve (16) (403)。
- A kind of 4. double drilling machine processing platforms of drilling machine according to claim 3, it is characterised in that:The sliding slot (403) with The slide (121) of support base (12) both sides is slidably connected.
- A kind of 5. double drilling machine processing platforms of drilling machine according to claim 1, it is characterised in that:Lead on the rack (7) Cross fixed link (8) and be fixed with positioning plate (9), first stepper motor (14) is fixed on positioning plate (9).
- A kind of 6. double drilling machine processing platforms of drilling machine according to claim 1, it is characterised in that:The support base (12) Bottom side is fixed with guide rod (11), and the bottom of the guide rod (11) is movably connected on positioning plate (9).
- A kind of 7. double drilling machine processing platforms of drilling machine according to claim 1, it is characterised in that:The drilling machine (2) passes through Bolt is detachably secured on workbench (1), and the workbench (1) is equipped with mounting groove (101).
- A kind of 8. double drilling machine processing platforms of drilling machine according to claim 1, it is characterised in that:The screw rod (10) passes through Positioning plate (9), the bottom of the screw rod (10) are fixed with limited block (18).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201711296064.0A CN108015310B (en) | 2017-12-08 | 2017-12-08 | A kind of double drilling machine processing platforms of drilling machine |
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CN201711296064.0A CN108015310B (en) | 2017-12-08 | 2017-12-08 | A kind of double drilling machine processing platforms of drilling machine |
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CN108015310A true CN108015310A (en) | 2018-05-11 |
CN108015310B CN108015310B (en) | 2019-07-05 |
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CN201711296064.0A Expired - Fee Related CN108015310B (en) | 2017-12-08 | 2017-12-08 | A kind of double drilling machine processing platforms of drilling machine |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110385625A (en) * | 2019-08-06 | 2019-10-29 | 海盐汇联通用配件有限公司 | A kind of novel slotted nut process units |
CN110394676A (en) * | 2019-08-06 | 2019-11-01 | 海盐汇联通用配件有限公司 | A kind of hex nut fluting uses automatic slotting device |
CN112338226A (en) * | 2020-10-30 | 2021-02-09 | 刘妍开 | Multi-station drilling machine convenient for simultaneously drilling holes at two ends of cylinder |
CN115816089A (en) * | 2023-01-07 | 2023-03-21 | 东莞市锐纳精密刀具有限公司 | Fast-assembly integrated pentagonal diamond groove cutter manufacturing device and manufacturing method |
CN117124090A (en) * | 2023-10-26 | 2023-11-28 | 烟台金晖铜业有限公司 | Fixing structure for parallel drilling and milling machine |
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JPS642806A (en) * | 1987-06-26 | 1989-01-06 | Horikawa Denki Kogyo:Kk | Device for boring hole in workpiece |
CN203863373U (en) * | 2014-06-03 | 2014-10-08 | 温州职业技术学院 | Precise servo-drive sliding worktable |
CN204818857U (en) * | 2015-08-04 | 2015-12-02 | 安徽机电职业技术学院 | Clamping device of car axostylus axostyle class part platform face processing |
CN206373389U (en) * | 2017-01-22 | 2017-08-04 | 东莞普力司新机械有限公司 | A kind of motor case drilling equipment |
US20170295807A1 (en) * | 2013-05-29 | 2017-10-19 | DAS Foods, LLC | Coring machine and related methods |
CN206605061U (en) * | 2017-03-01 | 2017-11-03 | 无锡特莱斯精密机械制造有限公司 | A kind of new type auto puncher |
CN107378028A (en) * | 2017-07-21 | 2017-11-24 | 罗厚镇 | A kind of radial drilling machine for being easy to regulation |
-
2017
- 2017-12-08 CN CN201711296064.0A patent/CN108015310B/en not_active Expired - Fee Related
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JPS642806A (en) * | 1987-06-26 | 1989-01-06 | Horikawa Denki Kogyo:Kk | Device for boring hole in workpiece |
US20170295807A1 (en) * | 2013-05-29 | 2017-10-19 | DAS Foods, LLC | Coring machine and related methods |
CN203863373U (en) * | 2014-06-03 | 2014-10-08 | 温州职业技术学院 | Precise servo-drive sliding worktable |
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CN206373389U (en) * | 2017-01-22 | 2017-08-04 | 东莞普力司新机械有限公司 | A kind of motor case drilling equipment |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110385625A (en) * | 2019-08-06 | 2019-10-29 | 海盐汇联通用配件有限公司 | A kind of novel slotted nut process units |
CN110394676A (en) * | 2019-08-06 | 2019-11-01 | 海盐汇联通用配件有限公司 | A kind of hex nut fluting uses automatic slotting device |
CN112338226A (en) * | 2020-10-30 | 2021-02-09 | 刘妍开 | Multi-station drilling machine convenient for simultaneously drilling holes at two ends of cylinder |
CN115816089A (en) * | 2023-01-07 | 2023-03-21 | 东莞市锐纳精密刀具有限公司 | Fast-assembly integrated pentagonal diamond groove cutter manufacturing device and manufacturing method |
CN117124090A (en) * | 2023-10-26 | 2023-11-28 | 烟台金晖铜业有限公司 | Fixing structure for parallel drilling and milling machine |
CN117124090B (en) * | 2023-10-26 | 2023-12-29 | 烟台金晖铜业有限公司 | Fixing structure for parallel drilling and milling machine |
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