CN103056412A - Numerical control drilling tool with multi-spindle and bi-directional processing function - Google Patents

Numerical control drilling tool with multi-spindle and bi-directional processing function Download PDF

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Publication number
CN103056412A
CN103056412A CN201310033439XA CN201310033439A CN103056412A CN 103056412 A CN103056412 A CN 103056412A CN 201310033439X A CN201310033439X A CN 201310033439XA CN 201310033439 A CN201310033439 A CN 201310033439A CN 103056412 A CN103056412 A CN 103056412A
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China
Prior art keywords
numerical control
unit
spindle
main shaft
rotating platform
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CN201310033439XA
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Chinese (zh)
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CN103056412B (en
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李耀稳
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李耀稳
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Abstract

The invention relates to tools, in particular to a numerical control drilling tool with a multi-spindle and bi-directional processing function. The numerical control drilling tool comprises a workpiece clamping unit and feed units. Feed units are respectively arranged on the right and the left of the workpiece clamping unit, the workpiece clamping unit is a numerical control rotary table capable of clamping workpieces to be processed, the feed units are systems capable of supporting and controlling spindle parts to be fed in horizontal and vertical directions in order to carry out hole drilling to the workpieces to be processed, each feed unit comprises the spindle parts provided with two sets of mounting drilling tools, and four sets of spindle components are mounted in total. The problem of difficulty in quickly processing about 10,000 drill holes with a depth of 50 millimeters to be uniformly distributed on the periphery of a circular mould with an external diameter of phi 1000- 2000 millimeters and a height of 2000 millimeters is solved, processing can be completed within two days, processing efficiency and processing precision are improved.

Description

The two-way processing numeric control drilling machine tool of a kind of multiaxis
Technical field
The present invention relates to lathe, espespecially be applicable in the enterprising conduct of ring mould to the two-way processing numeric control drilling machine tool of a kind of multiaxis of deep hole machining.
Background technology
Processing a large amount of halving holes at some large-scale processed annular class workpiece is difficults.Be a kind of ring mould such as workpiece to be machined, its external diameter is φ 1000~φ 2000mm, and height is 2000mm, will evenly get out drilling depth and be approximately 10,000 of the dark apertures of 50mm on this ring mould circumference, and rapidoprint is structural alloy steel, carbon steel etc.
In the prior art, processing above-mentioned workpiece does not have special-purpose lathe, only has the lathe with other kind to carry out, and processing a workpiece time spent needs two weeks, and the indexing accuracy of the workpiece hole that is processed into and aperture precision are not high, and working (machining) efficiency is slow.
Summary of the invention
The technical issues that need to address of the present invention are to overcome the deficiency that prior art can not rapid processing when a lot of index hole such as large-sized annular class workpiece processing such as ring mould etc., provide a kind of multiaxis two-way processing numeric control drilling machine tool.It can satisfy the needs of a lot of index holes of rapid processing on the large-sized annular class workpiece such as ring mould fully.
For this reason, the two-way processing numeric control drilling machine tool of a kind of multiaxis of the present invention adopts following technical proposals:
The two-way processing numeric control drilling machine tool of a kind of multiaxis, comprise clamping workpiece unit and feed unit, one feed unit respectively is set about centered by the clamping workpiece unit, this left and right directions is decided to be Z-direction, and above-below direction is that (processing mode of the present invention is Horizontal type processing to Y direction, and the hole that processes is lateral aperture, the horizontal direction of hole depth indication is decided to be Z-direction, in the presents, Z-direction is along left and right directions, and above-below direction is that vertical cube is to then being Y direction); The clamping workpiece unit is the NC rotary table of energy clamping workpiece to be machined, described feed unit is for supporting and can controlling deep hole machining is implemented in the spindle unit feeding to workpiece to be machined system in level and above-below direction, each described feed unit comprises the spindle unit that two cover installing drill spot facing cutters are set, and the quadruplet spindle unit is installed altogether.
Technique scheme is further set forth:
Described feed unit comprises base, nc sliding table, Z axis line slideway, Z axis ball screw, column, Y-axis line slideway, Y-axis ball screw, crossbeam, main shaft planker and described spindle unit, the Z axis line slideway is arranged on the base, nc sliding table and the configuration of Z axis ball screw, Z axis ball screw are subjected to the driving of its equipped servomotor and drive nc sliding table along the slippage of Z axis line slideway; Be fixedly mounted with column at nc sliding table, complying with column the Y-axis line slideway is set, crossbeam and Y-axis ball screw are equipped, and Y-axis ball screw is subjected to the driving of its servomotor that is equipped with it and drives crossbeam along the up and down slippage of Y-axis line slideway; The main shaft planker is arranged on the crossbeam, the described spindle unit of in each described feed unit a cover is arranged on the described main shaft planker, another set of described spindle unit is fixedly mounted with and is arranged on the described crossbeam, described spindle unit comprises main spindle box body and main shaft, main shaft is installed on the main spindle box body, and configuration two cover servo principal axis motors are to drive the described main shaft rotation of separately link.
The clamping workpiece unit comprises pedestal, numerical control rotating platform and numerical control rotating platform servomotor, numerical control rotating platform is installed on the pedestal, numerical control rotating platform servomotor and numerical control rotating platform are equipped and drive numerical control rotating platform at pedestal rotation and calibration, workpiece to be machined is installed on the numerical control rotating platform, and numerical control rotating platform can carry out calibration to the circumference of workpiece to be machined
The manual adjusting device of the distance between axles of described main shaft is set at described crossbeam, and the adjusting range of described two spindle distances is in 50mm.
The drilling tool clamping is in main shaft inner spring chuck, and by nut check.
Described servo principal axis motor drives main shaft by the profile of tooth belt wheel on it and rotates.
Described main shaft sets overload protection arrangement to realize overload protection function; the described spindle power also automatic alarm that can raise in process in case when the anomaly such as material inequality, smear metal obstruction, tool wear or damage occurring; automatically stop, can effectively protecting workpiece to be machined and lathe.
Electric control system is set, and the Electrical Control of Machinery Tools system comprises the electric cabinet control cabinet of the independence that electric cabinet heat exchanger is installed; The setting operation console, operating console comprises liquid crystal display, CNC system and operation Chinese display interface, possess and control function zero point able to programme, digital control system control is implemented in the operation of numerical control rotating platform, Z axis ball screw, Y-axis ball screw, servo principal axis motor.
Compare with prior art, the invention has the beneficial effects as follows:
One, can solve workpiece to be machined is that external diameter is φ 1000~φ 2000mm, high ring mould even approximately rapid processing difficult problem of 10,000 of radially dark aperture that distributes on its circumference for 2000mm, only needs 2 day time just can machine, working (machining) efficiency is high.
Its two, adopt U to bore the processing method that cutter carries out the hole, surface smoothness is good.Distance between axles between two main shafts can be adjusted (adjusting range is in 50mm), and the present invention can compatible carry out the hole processing in 8 times of footpaths of φ 10mm~φ 20mm.
Description of drawings
Fig. 1 is front view of the present invention;
Fig. 2 is top view of the present invention;
Fig. 3 is side view of the present invention.
Among the figure: 1, clamping workpiece unit and feed unit; 10, workpiece to be machined; 11, pedestal; 12, numerical control rotating platform; 13, numerical control rotating platform servomotor; 2, feed unit; 20, base; 21, nc sliding table; 22, Z axis line slideway; 23, Z axis ball screw; 24, column; 25, Y-axis line slideway; 26, Y-axis ball screw; 27, crossbeam; 28, main shaft planker; 29, main shaft; 30, manual adjusting device; 31, drilling tool; 32, cold filtration system; 33, automatic lubricating system; 34, electric cabinet control cabinet; 35, operating console.
The specific embodiment
Introduce the specific embodiment of the present invention below in conjunction with accompanying drawing.
Such as Fig. 1, Fig. 2 and shown in Figure 3, the two-way processing numeric control drilling machine tool of a kind of multiaxis, this lathe are that Horizontal type is arranged.Comprise clamping workpiece unit 1 and feed unit 2, a feed unit 2 respectively is set about centered by clamping workpiece unit 1; Clamping workpiece unit 1 is the NC rotary table of energy clamping workpiece to be machined 10, described feed unit 2 is for supporting and can controlling deep hole machining are implemented in the spindle unit feeding to workpiece to be machined 10 system in level and above-below direction, each described feed unit 2 comprises the spindle unit that two cover installing drill spot facing cutters are set, this two covers spindle unit is in position for be arrangeding in parallel up and down, wherein a cover spindle unit is done at crossbeam 27 and is moved up and down, another set of being fixed on the crossbeam 27 installed the quadruplet spindle unit altogether.
Described feed unit 2 comprises base 20, nc sliding table 21, Z axis line slideway 22, Z axis ball screw 23, column 24, Y-axis line slideway 25, Y-axis ball screw 26, crossbeam 27, main shaft planker 28 and described spindle unit, Z axis line slideway 22 is arranged on the base 20, nc sliding table 21 is subjected to the driving of its equipped servomotor and drives nc sliding table 21 along 22 slippages of Z axis line slideway with Z axis ball screw 23 configurations, Z axis ball screw 23; Be fixedly mounted with column 24 at nc sliding table 21, complying with column 24 Y-axis line slideway 25 is set, crossbeam 27 is equipped with Y-axis ball screw 26, and Y-axis ball screw 26 is subjected to the driving of its servomotor that is equipped with it and drives crossbeam 27 along the slippage about in the of 25 of Y-axis line slideway; Main shaft planker 28 is arranged on the crossbeam 27, the described spindle unit of in each described feed unit 2 a cover is arranged on to do on the described main shaft planker and moves up and down, another set of described spindle unit is fixedly mounted with and is arranged on the described crossbeam, described spindle unit comprises main spindle box body and main shaft 29, main shaft 29 is installed, described main shaft 29 rotations of configuration two cover servo principal axis motors to drive separately link on the main spindle box body.
Clamping workpiece unit 1 comprises pedestal 11, numerical control rotating platform 12 and numerical control rotating platform servomotor 13, numerical control rotating platform 12 is installed on the pedestal 11, numerical control rotating platform servomotor 13 is equipped with and drives numerical control rotating platform 12 with numerical control rotating platform 12 and rotates at pedestal 11, workpiece to be machined 10 is installed on the numerical control rotating platform 12, and numerical control rotating platform 12 can carry out calibration to the circumference of workpiece to be machined 10.
At described crossbeam 27 manual adjusting device 30 is set, adjusts the distance between axles of described main shaft 29 by adjusting up and down main shaft supporting plate 28, the adjusting range of described two spindle distances is in 50mm.
Drilling tool 31 clampings are in main shaft 29 inner spring chucks, and by nut check.
Described servo principal axis motor drives main shaft 29 by the profile of tooth belt wheel on it and rotates.
Described main shaft 29 sets overload protection arrangement to realize overload protection function; the described spindle power also automatic alarm that can raise in process in case when the anomaly such as material inequality, smear metal obstruction, tool wear or damage occurring; automatically stop, can effectively protecting workpiece to be machined and lathe.
Electric control system is set, and the Electrical Control of Machinery Tools system comprises the electric cabinet control cabinet 34 of the independence that electric cabinet heat exchanger is installed; Setting operation console 35, operating console 35 comprises liquid crystal display, CNC system and operation Chinese display interface, possess and control function zero point able to programme, digital control system control is implemented in the operation of numerical control rotating platform, Z axis ball screw, Y-axis ball screw, servo principal axis motor.
The basic parts such as base 20, pedestal 11, column 24, crossbeam 27, nc sliding table 21, main shaft planker 28 all adopt the Reform of Resin Sand Casting forging piece through the qualitative processing of secondary, lathe of the present invention can not produce distortion, enough static state, dynamic, hot rigidity and precision are arranged, can greatly improve lathe stability and reliability.Lathe stability, reliable energy performance satisfy the user and did not shut down work requirements in 24 hours.
Lathe of the present invention mainly is protection main shaft scrap iron from splashing aspect protection.
Lathe of the present invention carries out Internal hole positioning by the convex dish that is installed on the numerical control rotating platform 12 to workpiece to be machined spare adding man-hour, manually with pressing plate workpiece to be machined 10 end faces are compressed, the calibration in workpiece to be machined circumferencial direction hole is to finish by the calibration of numerical control rotating platform 12.Up and down two parallel horizontal radial deep holes of workpiece to be machined 10 are to drive (both sides are totally 4 holes) that the spindle unit on two columns and the column is finished by the nc sliding table 21 on the right and left column 24.The boring feeding is to finish drilling depth by the column feeding, and workpiece to be machined 10 axially displaced (or location of axial hole) finished by numerical control rotating platform 12.Respectively arrange to the left and right one with nc sliding table 21 and the column 24 of double power head in the footpath of workpiece to be machined 10, workpiece to be machined 10 is whenever finished one-time positioning, two nc sliding table 21 and columns 24 with double power head of diametrically contraposition are processed workpiece to be machined 10 simultaneously, once can finish the processing (processing two holes on one side) in four holes, according to the size of processed ring die worker part and the spacing between line-spacing capable of regulating two unit heads, use the screw lock planker after having adjusted, whenever nc sliding table 21 retreats after processing on the circumference one group of hole, numerical control rotating platform 12 rotates to position, next hole, carry out deep hole machining, after one week of workpiece machines, crossbeam on the column 24 begins to move up and down under digital control system control needs the machining hole bit position, next group hole of axially displaced processing loops the hole processing of ring Molded Depth with this again.
The work top of numerical control rotating platform 12 adopts HT-300 cast iron, and wearability and the stability on workbench surface have been improved through Quenching Treatment in the workbench surface after the roughing well, carry out fine finishining again.
On numerical control rotating platform 12 table tops dovetail groove is arranged, dovetail groove is convenient to the stationary fixture of clamping workpiece to be machined 10.
When processing workpiece to be machined 10, workpiece to be machined 10 is placed on the stationary fixture, manually with pressing plate workpiece to be machined 10 is fixed on the numerical control rotating platform work top.
The present invention also arranges cold filtration system 32,, and cooling fluid is implemented to reclaim filter with recycling to cutter cooling by cooling fluid.
The lubricated employing automatic lubricating system 33 of lathe of the present invention is lubricated primary lubricant line slideway and screw mandrel.
Local protection is adopted in the protection of lathe of the present invention, and scrap iron from splashing is out located to protect when mainly protecting main shaft 29 cutting.
Above embodiment just is explanation rather than restriction the present invention, therefore all equivalences of doing according to patent claim of the present invention change or modify, all belongs in the claim scope of the present invention.

Claims (9)

1. two-way processing numeric control drilling machine tool of multiaxis, comprise clamping workpiece unit and feed unit, it is characterized in that: a feed unit respectively is set about centered by the clamping workpiece unit, this left and right directions is decided to be Z-direction, above-below direction is Y direction, the clamping workpiece unit is the NC rotary table of energy clamping workpiece to be machined, described feed unit is for supporting and can controlling hole processing is implemented in the spindle unit feeding to workpiece to be machined system in level and above-below direction, each described feed unit comprises the spindle unit that two cover mounting cutters are set, and the quadruplet spindle unit is installed altogether.
2. the two-way processing numeric control drilling machine tool of a kind of multiaxis according to claim 1, it is characterized in that: described feed unit comprises base, nc sliding table, Z axis line slideway, Z axis ball screw, column, Y-axis line slideway, Y-axis ball screw, crossbeam, main shaft planker and described spindle unit, the Z axis line slideway is arranged on the base, nc sliding table and the configuration of Z axis ball screw, Z axis ball screw are subjected to the driving of its equipped servomotor and drive nc sliding table along the slippage of Z axis line slideway; Be fixedly mounted with column at nc sliding table, complying with column the Y-axis line slideway is set, crossbeam and Y-axis ball screw are equipped, and Y-axis ball screw is subjected to the driving of its servomotor that is equipped with it and drives crossbeam along the up and down slippage of Y-axis line slideway; The main shaft planker is arranged on the crossbeam, the described spindle unit of in each described feed unit a cover is arranged on the described main shaft planker, another set of described spindle unit is fixedly mounted with and is arranged on the described crossbeam, described spindle unit comprises main spindle box body and main shaft, main shaft is installed on the main spindle box body, and configuration two cover servo principal axis motors are to drive the described main shaft rotation of separately link.
3. the two-way processing numeric control drilling machine tool of a kind of multiaxis according to claim 2, it is characterized in that: the clamping workpiece unit comprises pedestal, numerical control rotating platform and numerical control rotating platform servomotor, numerical control rotating platform is installed on the pedestal, numerical control rotating platform servomotor and numerical control rotating platform are equipped and drive numerical control rotating platform at pedestal rotation and calibration, workpiece to be machined is installed on the numerical control rotating platform, and numerical control rotating platform can carry out calibration to the circumference of workpiece to be machined.
4. the two-way processing numeric control drilling machine tool of a kind of multiaxis according to claim 3 is characterized in that: the manual adjusting device of the distance between axles of adjusting two described main shafts is set at described crossbeam, and the adjusting range of described distance between axles is in 50mm.
5. the two-way processing numeric control drilling machine tool of a kind of multiaxis according to claim 3 is characterized in that: the drilling tool clamping is in main shaft inner spring chuck, and by nut check.
6. the two-way processing numeric control drilling machine tool of a kind of multiaxis according to claim 3 is characterized in that: described servo principal axis motor drives main shaft by the profile of tooth belt wheel on it and rotates.
7. the two-way processing numeric control drilling machine tool of a kind of multiaxis according to claim 3; it is characterized in that: described main shaft sets overload protection arrangement to realize overload protection function; the described spindle power also automatic alarm that can raise in process in case when the anomaly such as material inequality, smear metal obstruction, tool wear or damage occurring; automatically stop, can effectively protecting workpiece to be machined and lathe.
8. the two-way processing numeric control drilling machine tool of a kind of multiaxis according to claim 3, it is characterized in that: electric control system is set, and the Electrical Control of Machinery Tools system comprises the electric cabinet control cabinet of the independence that electric cabinet heat exchanger is installed; The setting operation console, operating console comprises liquid crystal display, CNC system and operation Chinese display interface, possess and control function zero point able to programme, digital control system control is implemented in the operation of numerical control rotating platform, Z axis ball screw, Y-axis ball screw, servo principal axis motor.
9. the two-way processing numeric control drilling machine tool of a kind of multiaxis according to claim 3 is characterized in that: the cold filtration system also is set, by cooling fluid cutter is cooled off, and cooling fluid is reclaimed filtration.
CN201310033439.XA 2013-01-29 2013-01-29 The two-way processing numeric control drilling machine tool of a kind of multiaxis CN103056412B (en)

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Cited By (24)

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CN103286342A (en) * 2013-06-18 2013-09-11 昆山市佰奥自动化设备科技有限公司 Double-motorized-spindle drilling device
CN103418812A (en) * 2013-08-08 2013-12-04 四川迅雷威机械制造有限公司 Machine tool for ring mold gun drill
CN103659956A (en) * 2013-11-22 2014-03-26 大连日佳电子有限公司 Rotating tower double-screwdriver nailing method and system
CN103691872A (en) * 2013-12-15 2014-04-02 青岛海通车桥有限公司 Automatic riveting machine for connection between shoe and brake pad, and use method thereof
CN103950065A (en) * 2014-04-08 2014-07-30 航天材料及工艺研究所 Carbon fiber composite material large-depth non-through square hole processing device and method
CN105312610A (en) * 2015-12-05 2016-02-10 天津鼎天斯凯特机械有限公司 Transverse push type drilling machine
CN105345080A (en) * 2015-12-04 2016-02-24 嘉禾福顺机械实业有限公司 Automatic machining equipment for connecting screw holes of water pump connecting cover
CN105834748A (en) * 2016-05-13 2016-08-10 中国东方电气集团有限公司 Automatic drilling device for large motor rotor
CN105855881A (en) * 2016-05-13 2016-08-17 中国东方电气集团有限公司 Multi-station automatic drilling equipment for rotary parts
CN105903997A (en) * 2016-06-24 2016-08-31 德州德隆(集团)机床有限责任公司 Machine tool for drilling operation of porous cylindrical workpiece and operation method
CN105904216A (en) * 2016-05-25 2016-08-31 张玲玲 High-precision multi-axis numerical control machine tool
CN107791071A (en) * 2017-09-26 2018-03-13 东莞市皓晟实业有限公司 It is a kind of can adjust automatically spacing Digit Control Machine Tool and its more main shafts, more magazine tool structures
CN107791072A (en) * 2017-09-26 2018-03-13 东莞市皓晟实业有限公司 A kind of Digit Control Machine Tool and its more main shafts, more magazine tool structures of infrared positioning adjustment spacing
CN107838460A (en) * 2017-05-31 2018-03-27 南宁朗程电子科技有限公司 A kind of two-way punch device
CN108145203A (en) * 2017-12-19 2018-06-12 金凯 A kind of multiple degrees of freedom lathe for circuit board processing
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CN103286342B (en) * 2013-06-18 2016-08-24 昆山市佰奥自动化设备科技有限公司 Double electro spindle drilling equipments
CN103286342A (en) * 2013-06-18 2013-09-11 昆山市佰奥自动化设备科技有限公司 Double-motorized-spindle drilling device
CN103418812B (en) * 2013-08-08 2016-02-17 四川迅雷威机械制造有限公司 Ring mould drill gun special purpose machine tool
CN103418812A (en) * 2013-08-08 2013-12-04 四川迅雷威机械制造有限公司 Machine tool for ring mold gun drill
CN103659956B (en) * 2013-11-22 2015-03-25 大连日佳电子有限公司 Rotating tower double-screwdriver nailing method and system
CN103659956A (en) * 2013-11-22 2014-03-26 大连日佳电子有限公司 Rotating tower double-screwdriver nailing method and system
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CN103950065A (en) * 2014-04-08 2014-07-30 航天材料及工艺研究所 Carbon fiber composite material large-depth non-through square hole processing device and method
CN103950065B (en) * 2014-04-08 2015-09-23 航天材料及工艺研究所 A kind of not through square hole machining device of the large degree of depth of carbon fibre composite and method
CN105345080A (en) * 2015-12-04 2016-02-24 嘉禾福顺机械实业有限公司 Automatic machining equipment for connecting screw holes of water pump connecting cover
CN105345080B (en) * 2015-12-04 2019-12-24 嘉禾福顺机械实业有限公司 Automatic processing equipment for connection screw hole of water pump connection cover
CN105312610A (en) * 2015-12-05 2016-02-10 天津鼎天斯凯特机械有限公司 Transverse push type drilling machine
CN105855881A (en) * 2016-05-13 2016-08-17 中国东方电气集团有限公司 Multi-station automatic drilling equipment for rotary parts
CN105834748A (en) * 2016-05-13 2016-08-10 中国东方电气集团有限公司 Automatic drilling device for large motor rotor
CN105904216A (en) * 2016-05-25 2016-08-31 张玲玲 High-precision multi-axis numerical control machine tool
CN105904216B (en) * 2016-05-25 2017-10-20 张玲玲 A kind of high-precision multi-axis NC Machine Tools
CN105903997A (en) * 2016-06-24 2016-08-31 德州德隆(集团)机床有限责任公司 Machine tool for drilling operation of porous cylindrical workpiece and operation method
CN107838460A (en) * 2017-05-31 2018-03-27 南宁朗程电子科技有限公司 A kind of two-way punch device
CN107791072A (en) * 2017-09-26 2018-03-13 东莞市皓晟实业有限公司 A kind of Digit Control Machine Tool and its more main shafts, more magazine tool structures of infrared positioning adjustment spacing
CN107791071A (en) * 2017-09-26 2018-03-13 东莞市皓晟实业有限公司 It is a kind of can adjust automatically spacing Digit Control Machine Tool and its more main shafts, more magazine tool structures
CN108145203A (en) * 2017-12-19 2018-06-12 金凯 A kind of multiple degrees of freedom lathe for circuit board processing
CN108145203B (en) * 2017-12-19 2019-06-04 佛山市鑫科源电子有限公司 A kind of multiple degrees of freedom lathe for circuit board processing
CN108856786A (en) * 2018-01-10 2018-11-23 连云港江南精工机械有限公司 A kind of cylindrical element drilling gang tool
CN108480675A (en) * 2018-03-24 2018-09-04 浙江海宁普赛自动化科技有限公司 A kind of automatic punching method during the former line inserted sheet assembling device of electricity
CN108817450A (en) * 2018-05-29 2018-11-16 广州吉和电子商务有限公司 A kind of foldable domestic herringbone ladder device
CN108889977A (en) * 2018-07-22 2018-11-27 苏州优康通信设备有限公司 A kind of rotary communication apparatus drilling equipment
CN110509285A (en) * 2019-07-31 2019-11-29 清华大学 A kind of huge revolving class component movable type machining robot
CN111136300A (en) * 2020-02-25 2020-05-12 淮北德林机械设备有限公司 Bidirectional drilling device
CN111266619A (en) * 2020-03-03 2020-06-12 米伦医疗科技(苏州)有限公司 Automatic punching mechanism for supporting legs of side supporting frame of walking aid
CN111203565A (en) * 2020-03-12 2020-05-29 杨浩 Integrative equipment of flange multi-angle drilling
CN111250751A (en) * 2020-03-20 2020-06-09 磐安艾肯机械设备有限公司 New material metal perforating device

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