CN104493241B - Drilling machine special for deep hole - Google Patents

Drilling machine special for deep hole Download PDF

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Publication number
CN104493241B
CN104493241B CN201410777854.0A CN201410777854A CN104493241B CN 104493241 B CN104493241 B CN 104493241B CN 201410777854 A CN201410777854 A CN 201410777854A CN 104493241 B CN104493241 B CN 104493241B
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China
Prior art keywords
power head
frame
drilling
drilling power
auxiliary
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CN201410777854.0A
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Chinese (zh)
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CN104493241A (en
Inventor
于瑞水
张维刚
侯召辉
李平
刘春英
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Midea Group Co Ltd
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Midea Group Co Ltd
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Priority to CN201410777854.0A priority Critical patent/CN104493241B/en
Publication of CN104493241A publication Critical patent/CN104493241A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B41/00Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22Feeding members carrying tools or work
    • B23Q5/26Fluid-pressure drives

Abstract

The invention discloses a drilling machine special for a deep hole. The drilling machine comprises a frame, a drilling machine base, a drilling power head, a drilling power head feeding device, an auxiliary memory device, a workpiece fixing device, a connecting adjusting device for the workpiece fixing device and the frame, a connecting locking device for the workpiece fixing device and the frame, and a hydraulic and electrical unit, wherein the drilling machine base is mounted on the frame; the drilling power head is mounted on the drilling machine base; the auxiliary memory device is used for memorizing a drilling depth of the drilling power head. The automatic drilling for the deep hole of a workshop mould template workpiece is realized; an iron pin is automatically retreated after the hole is drilled for a certain depth; after the iron pin is completely retreated, a distance for quickly feeding the drilling power head again is determined through the stretched length of an auxiliary cylinder push rod, and the drilling power head is quickly fed again; when a drill bit is almost in contact with a machining surface, the slow feeding is immediately and automatically switched; the working efficiency of the drilling for the deep hole of the workshop mould template workpiece is increased; the labor intensity of a worker is reduced.

Description

A kind of deep hole Special drill machine
Technical field
The invention belongs to a kind of drilling process equipment of machining, especially belong to a kind of deep hole Special drill machine.
Background technology
The drilling processing in hole is the common manufacturing procedure of machining, and the hole depth of processing is substantially 5 times of aperture about, hole Depth/aperture is more than 5-30 times is commonly called as the processing of deep hole.Workshop mould shaping plate needs to bore the boring of 500-800 depth, uses Traditional manual drilling machine high labor intensive, work consuming takes, and traditional manual drilling machine stroke is little, needs repeatedly to adjust drilling machine height, and Traditional manual drilling machine before bit contact machined surface cannot fast feed, boring work efficiency is low;Because template and drilling machine are equal It is active, more gets into depths, the swing of drill bit is bigger, and hole is bored more inclined and more inclined, and borehole accuracy is poor, and iron filings are discharged and are stranded Difficult.How to provide drilling special equipment for the boring of workshop mould type twist drill 500-800 depth, and can be in drilling special equipment Realizing drill bit fast feed before bit contact machined surface is the problem needing to solve.
Content of the invention
The technical problem to be solved is: provides a kind of deep hole Special drill machine.Using this deep hole Special drill Function is the boring that workshop mould shaping plate workpiece bores 500-800 depth, and can also realize fast before bit contact machined surface Speed feeding, improves the work efficiency of boring, reduces labor strength.
The technical scheme that the present invention solves above-mentioned technical problem is: a kind of deep hole Special drill machine, including frame and installation Boring machine base in frame, is characterized in that: also includes the drilling power head installed on boring machine base, drilling power head enters To device, remember the auxiliary memory device of drilling power head drilling depth, Work fixing device, Work fixing device and frame Connect adjusting apparatus, connection locking device, hydraulic pressure and the electrical installation of Work fixing device and frame;
Described drilling power head is arranged on drilling power head installing plate, is arranged on the boring on drilling power head installing plate Unit head is arranged on boring machine base using line slideway, and this drilling power head includes drill bit, the drill bit of installation drill bit stretches Adjusting means, motor and transmission electrical machine power are to the actuating device of drill bit;
Described drilling power head feed arrangement includes hydraulic jack, hydraulic jack installing plate, hydraulic jack pushing frame, hydraulic pressure Oil cylinder installing plate is arranged in the frame on the downside of drilling power head installing plate using mounting bracket, and hydraulic jack is installed on hydraulic oil On cylinder installing plate, hydraulic jack push rod is connected with the hydraulic jack pushing frame being installed on described drilling power head installing plate bottom surface Connect, the vertical centrage of hydraulic jack pushing frame is consistent with the vertical centrage of the drill bit of drilling power head;
The auxiliary memory device of described drilling depth includes auxiliary hydraulic pressure oil cylinder, auxiliary hydraulic pressure oil cylinder installing plate, auxiliary liquid Compressing cylinder push rod pulls frame, and the auxiliary hydraulic pressure oil cylinder being arranged on auxiliary hydraulic pressure oil cylinder installing plate is arranged on brill using line slideway On the machine base of hole, auxiliary hydraulic pressure cylinder putter installs the auxiliary hydraulic pressure cylinder putter of plate top surface with being installed on described drilling power head Frame is pulled to be connected, auxiliary cylinder stretching baffle plate is arranged in the frame of auxiliary hydraulic pressure oil cylinder installing plate side;Auxiliary hydraulic pressure oil The line slideway that the line slideway that cylinder uses is used with drilling power head is paralleled;
Described Work fixing device is triangle workpiece installing rack, and this triangle workpiece installing rack has one and described brill The parallel workpiece mounting surface of hole machine base, also has the perpendicular that a perpendicular with described frame is paralleled, institute The end stating workpiece mounting surface is installed with block piece block;
Described Work fixing device includes sliding panel, in the plane of described sliding panel side with the connection adjusting apparatus of frame It is provided with and slides laterally block, another side plane is provided with parallel vertical groove, on this sliding panel, setting slides laterally Block is set in the parallel transverse concave groove of setting on described triangle workpiece installing rack perpendicular, this sliding panel opposite side In the vertical groove of setting in plane, set is filled with vertically slidable piece of setting on described frame perpendicular;
Described boring machine base activity on the top surface of Work fixing device one end is installed with boring positioning plate, this boring On location-plate, the boring of setting is consistent with the drill axis of drilling power head.
Described Work fixing device and the connection locking device of frame, hydraulic pressure and electrical installation adopt prior art.
During use, workshop mould shaping plate workpiece is positioned over the workpiece peace that Work fixing device is triangle workpiece installing rack On dress face, adjust the bore position of workpiece using the connection adjusting apparatus of Work fixing device and frame and lock the fixing dress of workpiece Put;Start drilling power head and Hydraulic Station, in the drill bit not and during absorption surface of drilling power head, hydraulic jack push rod promotes brill Hole unit head fast feed, now auxiliary cylinder feed together with drilling power head, when drill bit will contact surface of the work, hydraulic pressure Oil cylinder feeds at a slow speed, and auxiliary cylinder is motionless under the barrier effect of auxiliary cylinder stretching baffle plate, and auxiliary cylinder push rod is dynamic in boring Power head is installed the auxiliary hydraulic pressure cylinder putter that plate top surface installs and is pulled action being drawn together with drilling power head under the pulling of frame Stretch, the depth that the length being stretched by auxiliary cylinder push rod has been holed come labelling, at this moment auxiliary cylinder connects two of oil circuit Electromagnetic valve is opened, and auxiliary cylinder push rod allows hydraulic oil automatically be full of oil cylinder, drilling power head boring one depthkeeping while being stretched Hydraulic jack feed-disabling after degree, starts rapid backward, the at this moment closed electromagnetic valve of auxiliary cylinder, sealing oil circuit makes auxiliary cylinder Push rod tensile elongation is constant;After the completion of the drill bit of drilling power head falls back on the rearmost end pin of falling ferrum, hydraulic jack push rod promotes bores The fast feed again of hole unit head, the length that auxiliary cylinder push rod is stretched is exactly the distance of drilling power head fast feed again. So perseveration, until completing drilling depth.
The invention has the beneficial effects as follows: present invention achieves the deep hole automatic drilling of workshop mould shaping plate workpiece, boring one The depthkeeping degree automatic backing pin of falling ferrum, be finished down ferrum pin after, determine drilling power head again by the length that auxiliary cylinder push rod is stretched The distance of secondary fast feed, this fast feed, drill bit turn to enter at a slow speed when contacting machined surface soon immediately automatically again to make drilling power head Give, overcome traditional manual drilling machine before bit contact machined surface cannot fast feed technical problem, such perseveration, Until boring completes, improve the work efficiency of workshop mould shaping plate deep hole of workpiece boring;Period achieves automation mechanized operation, fall Low labor strength.
Again due to being provided with the connection adjusting apparatus of Work fixing device and frame, can easily be fixed by adjusting workpiece Device is used for carrying out deep hole drilling to the workshop mould shaping plate workpiece of different size with the relative position of frame.
Brief description
The present invention is further described with reference to the accompanying drawings and examples;
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the left view of the present invention;
Fig. 3 is the top view of the present invention;
In accompanying drawing: 1. frame, 2. boring machine base, 3. drilling power head, 4. drilling power head installing plate, 31. drill bits, 32. drill bit extension adjustment device, 33. motors, 34. transmission electrical machine power to the actuating device of drill bit, 9. hydraulic jack, 10. liquid Compressing cylinder installing plate, 11. hydraulic jack pushing frame, 12. auxiliary hydraulic pressure oil cylinders, 13. auxiliary hydraulic pressure oil cylinder installing plates, 14. auxiliary Hydraulic jack push rod pulls frame, 15. auxiliary cylinder stretching baffle plate 16. workpiece mounting surfaces, 17. block piece blocks, 18. sliding panels, 19. brills Hole location-plate, 20. vertically slidable pieces.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of deep hole Special drill machine, including frame 1 and the boring machine being installed in frame 1 Base 2, is characterized in that: also includes the drilling power head 3 installed on boring machine base 2, drilling power head 3 feed arrangement, memory The auxiliary memory device of drilling power head 3 drilling depth, Work fixing device, Work fixing device is adjusted with the connection of frame 1 Connection locking device, hydraulic pressure and the electrical installation of device, Work fixing device and frame 1;
Described drilling power head 3 is arranged on drilling power head installing plate 4, is arranged on drilling power head installing plate 4 Drilling power head 3 is arranged on boring machine base 2 using line slideway, and this drilling power head 3 includes drill bit 31, installs drill bit 31 Drill bit extension adjustment device 32, the actuating device 34 of motor 33 and transmission electrical machine power to drill bit;
Described drilling power head feed arrangement includes hydraulic jack 9, hydraulic jack installing plate 10, hydraulic jack pushing frame 11, hydraulic jack installing plate 10 is arranged in the frame 1 of drilling power head installing plate 4 downside using mounting bracket, hydraulic jack 9 It is installed on hydraulic jack installing plate 10, hydraulic jack push rod and the hydraulic pressure being installed on described drilling power head installing plate 4 bottom surface Oil cylinder pushing frame 11 is connected, the vertical center of the drill bit 31 of the vertical centrage of hydraulic jack pushing frame 11 and drilling power head 3 Line is consistent;
The auxiliary memory device of described drilling depth includes auxiliary hydraulic pressure oil cylinder 12, auxiliary hydraulic pressure oil cylinder installing plate 13, auxiliary Help hydraulic jack push rod to pull frame 14 and auxiliary cylinder stretching baffle plate 15, be arranged on the auxiliary on auxiliary hydraulic pressure oil cylinder installing plate 13 Hydraulic jack 12 using line slideway be arranged on boring machine base 2 on, auxiliary hydraulic pressure oil cylinder 12 push rod be installed on described boring The auxiliary hydraulic pressure cylinder putter of unit head installing plate 4 top surface pulls frame 14 to be connected, and auxiliary cylinder stretching baffle plate 15 is arranged on auxiliary Help in the frame 2 of hydraulic jack installing plate 13 side, the line slideway that auxiliary hydraulic pressure oil cylinder 12 uses is used with drilling power head 3 Line slideway parallel;
Described Work fixing device is triangle workpiece installing rack, and this triangle workpiece installing rack has one and described brill The parallel workpiece mounting surface of hole machine base 2 16, also have that a perpendicular with described frame 2 parallels vertically puts down Face, the end of described workpiece mounting surface 16 is installed with block piece block 17.
Embodiment 2
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of deep hole Special drill machine, including frame 1 and the boring machine being installed in frame 1 Base 2, is characterized in that: also includes the drilling power head 3 installed on boring machine base 2, drilling power head 3 feed arrangement, memory The auxiliary memory device of drilling power head 3 drilling depth, Work fixing device, Work fixing device is adjusted with the connection of frame 1 Connection locking device, hydraulic pressure and the electrical installation of device, Work fixing device and frame 1;
Described drilling power head 3 is arranged on drilling power head installing plate 4, is arranged on drilling power head installing plate 4 Drilling power head 3 is arranged on boring machine base 2 using line slideway, and this drilling power head 3 includes drill bit 31, installs drill bit 31 Drill bit extension adjustment device 32, the actuating device 34 of motor 33 and transmission electrical machine power to drill bit;
Described drilling power head feed arrangement includes hydraulic jack 9, hydraulic jack installing plate 10, hydraulic jack pushing frame 11, hydraulic jack installing plate 10 is arranged in the frame 1 of drilling power head installing plate 4 downside using mounting bracket, hydraulic jack 9 It is installed on hydraulic jack installing plate 10, hydraulic jack push rod and the hydraulic pressure being installed on described drilling power head installing plate 4 bottom surface Oil cylinder pushing frame 11 is connected, the vertical center of the drill bit 31 of the vertical centrage of hydraulic jack pushing frame 11 and drilling power head 3 Line is consistent;
The auxiliary memory device of described drilling depth includes auxiliary hydraulic pressure oil cylinder 12, auxiliary hydraulic pressure oil cylinder installing plate 13, auxiliary Help hydraulic jack push rod to pull frame 14 and auxiliary cylinder stretching baffle plate 15, be arranged on the auxiliary on auxiliary hydraulic pressure oil cylinder installing plate 13 Hydraulic jack 12 using line slideway be arranged on boring machine base 2 on, auxiliary hydraulic pressure oil cylinder 12 push rod be installed on described boring The auxiliary hydraulic pressure cylinder putter of unit head installing plate 4 top surface pulls frame 14 to be connected, and auxiliary cylinder stretching baffle plate 15 is arranged on auxiliary Help in the frame 2 of hydraulic jack installing plate 13 side, the line slideway that auxiliary hydraulic pressure oil cylinder 12 uses is used with drilling power head 3 Line slideway parallel;
Described Work fixing device is triangle workpiece installing rack, and this triangle workpiece installing rack has one and described brill The parallel workpiece mounting surface of hole machine base 2 16, also have that a perpendicular with described frame 2 parallels vertically puts down Face, the end of described workpiece mounting surface 16 is installed with block piece block 17;
Described Work fixing device includes sliding panel 18 with the connection adjusting apparatus of frame 2, described sliding panel 18 side It is provided with plane and slides laterally block, another side plane is provided with parallel vertical groove, setting on this sliding panel 18 Slide laterally block to be set in the parallel transverse concave groove of setting on described triangle workpiece installing rack perpendicular, this slip In the vertical groove of setting on another side plane of plate 18, set is filled with vertically slidable piece 20 of setting on described frame 2 perpendicular;
Described boring machine base 2 activity on the top surface of Work fixing device one end is installed with boring positioning plate 19, should On boring positioning plate 19, the boring of setting is consistent with drill bit 31 axis of drilling power head 3.
By above-mentioned description, those skilled in the art completely can be in the model without departing from this invention technological thought In enclosing, carry out various change and modification all within protection scope of the present invention.The unaccomplished matter of the present invention, belongs to ability The common knowledge of field technique personnel.

Claims (4)

1. a kind of deep hole Special drill machine, including frame and the boring machine base being installed in frame, is characterized in that: also include boring The drilling power head installed on the machine base of hole, drilling power head feed arrangement, the auxiliary note of memory drilling power head drilling depth Recall device, Work fixing device, the connection adjusting apparatus of Work fixing device and frame, the connection of Work fixing device and frame Locking device, hydraulic pressure and electrical installation;
Described drilling power head is arranged on drilling power head installing plate, is arranged on the drilling power on drilling power head installing plate Head is arranged on boring machine base using line slideway, and this drilling power head includes drill bit, installs the drill bit telescopic adjustment of drill bit Device, motor and transmission electrical machine power are to the actuating device of drill bit;
Described drilling power head feed arrangement includes hydraulic jack, hydraulic jack installing plate, hydraulic jack pushing frame, hydraulic jack Installing plate is arranged in the frame on the downside of drilling power head installing plate using mounting bracket, and hydraulic jack is installed on hydraulic jack peace On dress plate, hydraulic jack push rod is connected with the hydraulic jack pushing frame being installed on described drilling power head installing plate bottom surface, liquid The vertical centrage of compressing cylinder pushing frame is consistent with the vertical centrage of the drill bit of drilling power head;
The auxiliary memory device of described drilling depth includes auxiliary hydraulic pressure oil cylinder, auxiliary hydraulic pressure oil cylinder installing plate, auxiliary hydraulic pressure oil Cylinder push rod pulls frame, and the auxiliary hydraulic pressure oil cylinder being arranged on auxiliary hydraulic pressure oil cylinder installing plate is arranged on boring machine using line slideway On base, auxiliary hydraulic pressure cylinder putter installs the auxiliary hydraulic pressure cylinder putter pulling of plate top surface with being installed on described drilling power head Frame is connected, and auxiliary cylinder stretching baffle plate is arranged in the frame of auxiliary hydraulic pressure oil cylinder installing plate side, and auxiliary hydraulic pressure oil cylinder makes The line slideway that line slideway is used with drilling power head is paralleled.
2. a kind of deep hole Special drill machine according to claim 1, is characterized in that: described Work fixing device is triangle work Part installing rack, this triangle workpiece installing rack has a workpiece mounting surface paralleled with described boring machine base, also has The perpendicular that one perpendicular with described frame is paralleled, the end of described workpiece mounting surface is installed with block piece block.
3. a kind of deep hole Special drill machine according to claim 2, is characterized in that: the company of described Work fixing device and frame Connect adjusting apparatus and include sliding panel, the plane of described sliding panel side is provided with and slides laterally block, another side plane is arranged There is parallel vertical groove, on this sliding panel, the block that slides laterally of setting is set in described triangle workpiece installing rack and vertically puts down In the parallel transverse concave groove of setting on face, in the vertical groove of setting on another side plane of this sliding panel, set is filled with described machine Vertically slidable piece of setting on frame perpendicular.
4. a kind of deep hole Special drill machine according to any one of claims 1 to 3, is characterized in that: described boring machine base leans on Activity on the top surface of nearly Work fixing device one end is installed with boring positioning plate, the boring of setting and boring on this boring positioning plate The drill axis of unit head are consistent.
CN201410777854.0A 2014-12-15 2014-12-15 Drilling machine special for deep hole Active CN104493241B (en)

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Application Number Priority Date Filing Date Title
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CN104493241B true CN104493241B (en) 2017-02-01

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105397147B (en) * 2015-12-18 2017-06-20 丹东奥龙射线仪器集团有限公司 Automotive hub X-ray marking device

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JPS62199310A (en) * 1986-02-21 1987-09-03 Honda Motor Co Ltd Deep hole core drill
JPH07204914A (en) * 1994-01-17 1995-08-08 Mitsubishi Heavy Ind Ltd Hole drilling method by using gun drill
CN201151695Y (en) * 2007-12-04 2008-11-19 中山市富山玻璃机械有限公司 Full-automatic drill feed apparatus of vertical piercing machine glass
CN201271747Y (en) * 2008-09-17 2009-07-15 钻科(北京)科技有限公司 Multifunctional deep-hole drilling machines
CN201880960U (en) * 2010-11-30 2011-06-29 温岭市联星机械有限公司 Drilling machine with pneumatic feeding device
CN202137405U (en) * 2011-05-30 2012-02-08 浙江西菱台钻制造有限公司 Deep hole drilling machine
CN102528126A (en) * 2012-02-03 2012-07-04 山东法因数控机械股份有限公司 Device for drilling section
CN102581336A (en) * 2012-03-07 2012-07-18 瑞安市家蕊洁具有限公司 Deep hole machining equipment
CN202377563U (en) * 2011-12-08 2012-08-15 重庆银钢一通凸轮科技有限公司 Automatic drilling machine
CN203030959U (en) * 2012-12-28 2013-07-03 太仓中集集装箱制造有限公司 Automatic drilling equipment for container flooring
CN203227845U (en) * 2013-04-01 2013-10-09 潜江市江汉钻具有限公司 Hydraulic drilling device
CN204396962U (en) * 2014-12-15 2015-06-17 济南玫德铸造有限公司 A kind of deep hole Special drill machine

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB625251A (en) * 1945-03-21 1949-06-24 Nordberg Manufacturing Co Improvements in drilling machines
JPS62199310A (en) * 1986-02-21 1987-09-03 Honda Motor Co Ltd Deep hole core drill
JPH07204914A (en) * 1994-01-17 1995-08-08 Mitsubishi Heavy Ind Ltd Hole drilling method by using gun drill
CN201151695Y (en) * 2007-12-04 2008-11-19 中山市富山玻璃机械有限公司 Full-automatic drill feed apparatus of vertical piercing machine glass
CN201271747Y (en) * 2008-09-17 2009-07-15 钻科(北京)科技有限公司 Multifunctional deep-hole drilling machines
CN201880960U (en) * 2010-11-30 2011-06-29 温岭市联星机械有限公司 Drilling machine with pneumatic feeding device
CN202137405U (en) * 2011-05-30 2012-02-08 浙江西菱台钻制造有限公司 Deep hole drilling machine
CN202377563U (en) * 2011-12-08 2012-08-15 重庆银钢一通凸轮科技有限公司 Automatic drilling machine
CN102528126A (en) * 2012-02-03 2012-07-04 山东法因数控机械股份有限公司 Device for drilling section
CN102581336A (en) * 2012-03-07 2012-07-18 瑞安市家蕊洁具有限公司 Deep hole machining equipment
CN203030959U (en) * 2012-12-28 2013-07-03 太仓中集集装箱制造有限公司 Automatic drilling equipment for container flooring
CN203227845U (en) * 2013-04-01 2013-10-09 潜江市江汉钻具有限公司 Hydraulic drilling device
CN204396962U (en) * 2014-12-15 2015-06-17 济南玫德铸造有限公司 A kind of deep hole Special drill machine

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Address after: 250400 Shandong Province, Ji'nan city Pingyin County Industrial Park Mei steel dema science and Technology Park

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