CN108480771A - A kind of automatic slag removal machine based on hacksaw cutting principle - Google Patents
A kind of automatic slag removal machine based on hacksaw cutting principle Download PDFInfo
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- CN108480771A CN108480771A CN201810555494.8A CN201810555494A CN108480771A CN 108480771 A CN108480771 A CN 108480771A CN 201810555494 A CN201810555494 A CN 201810555494A CN 108480771 A CN108480771 A CN 108480771A
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- Prior art keywords
- seat
- hacksaw
- arc
- elastic force
- motor
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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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
- B23D49/003—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws having a plurality of saw blades or saw blades having plural cutting zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
- B23D51/08—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
- B23D51/16—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of drives or feed mechanisms for straight tools, e.g. saw blades, or bows
Abstract
The present invention relates to a kind of automatic slag removal machines based on hacksaw cutting principle, belong to welding technology field, it is arranged on arc hacksaw elastic force seat including arc-shaped steel saw componet, arc-shaped steel saw componet, arc hacksaw elastic force seat arc hacksaw elastic force seat sector swing mechanism is connected and fixed with reciprocating sawing machine structure；Reciprocating sawing machine structure is connect by inter-agency connection seat with lift in height mechanism.Therefore, the invention has the advantages that：1, the present invention overcomes the welding slag that weld seam and two side groove engaging portion sharp corner are difficult to clean off in all prior arts, entirely without scarfing cinder blind area；2, Non-intermittent low frequency impact acts on, and weldment and all welding system steady operations are unaffected；3, the welding slag of high bond strength type can equally be removed；4, it is used not only for ultra-narrow gap MAG/MIG weldering occasion, traditional automatic welding of other institutes scarfing cinder in need, semi-automatic welding, robot welding occasion are usable, it is only necessary to increase the overall width of hacksaw blade.
Description
Technical field
The present invention relates to a kind of automatic slag removal machines based on hacksaw cutting principle, belong to welding technology field.
Background technology
Permanent connection of the fusion welding technology due to can efficiently realize high intensity the industry neck such as remanufactures in equipment manufacturing
Domain obtains a very wide range of application.By the submerged-arc welding of the gas slag two-phase interaction of the classification of type of Welding Metallurgy reaction, welding rod
During arc welding, flux cored wire arc welding, the face of weld of solidification has one layer " skull " covering, and postwelding must be removed dry
Only, process abbreviation " scarfing cinder ", to prevent from generating " slag inclusion " type defective workmanship in subsequent weld metal.In melt welding method
CO2The face of weld that gas shielded arc welding, mixed gas arc welding (MAG welderings), inert gas-shielded arc welding (MIG welderings) postwelding solidify
Although without the skull continuously covered, there is the welding slag discontinuously covered fragmentarily, which is mainly metallurgical de-
Oxygen product, such as MnO and SiO2 compound MnO.SiO2.This kind of metallurgy usual postwelding of deoxidation products must also be removed totally,
Otherwise the probability that " slag inclusion " defect generates is still very high.
In the various consumable electrode arc welding technologies of traditional larger filling area, since welding groove size is larger, with each
Kind general tool is easier to remove.But in narrow gap MAG/MIG welderings and ultra-narrow gap MAG/MIG welding techniques, due to welding
Groove size very little, traditional tool is stretched at all not into groove, in addition the angle of weld seam and welding groove is small, the combination of welding slag
It is more firm, it removes extremely difficult.The stability and two side sharp corner of existing gas hammering technique influence to weldment are difficult to clean off,
Carbide rotary tool technology equally exists the cleaning blind area of two side angle, and there is discontinuous for the technology based on chain saw
Removing (there are larger spacing for chain between cog), two side angle, which are difficult to clean off clean, butt-welding fitting, has intermittent low frequency impact to make
With etc. limitations.
Invention content
The above-mentioned technical problem of the present invention is mainly to be addressed by following technical proposals：
A kind of automatic slag removal machine based on hacksaw cutting principle, which is characterized in that including arc-shaped steel saw componet, arc hacksaw
Component is arranged on arc hacksaw elastic force seat, arc hacksaw elastic force seat arc hacksaw elastic force seat sector swing mechanism and reciprocal sawing
Mechanism is connected and fixed；Reciprocating sawing machine structure is connect by inter-agency connection seat with lift in height mechanism.
In a kind of above-mentioned automatic slag removal machine based on hacksaw cutting principle, arc-shaped steel saw componet includes hacksaw blade, saw blade
Seat, tilt clapboard, trip bolt；The top of saw blade seat be equipped with tilt clapboard and arc-shaped kerve, lower part be equipped with guide pin and
Cotter slot, bottom are equipped with spring mounting hole；After more hacksaw blades are installed on by trip bolt in arc-shaped kerve, the sawtooth on top
Face is cambered surface, is coincide in favor of approximate with the face of weld after solidification.
In a kind of above-mentioned automatic slag removal machine based on hacksaw cutting principle, arc hacksaw elastic force seat include elastic force seat, under
Portion's spring mounting hole, spring guide and spring；Elastic force seat and the kidney slot of saw blade seat lower part are slidably matched, by spring guide,
After guide pin and cotter slot are assembled with saw blade seat, on the serrated face of more saw blades composition plus after certain pressure, arc hacksaw
Component can opposing arcuate hacksaw elastic force seat make elastic floating, i.e., pressurization float downward, decompression float.
In a kind of above-mentioned automatic slag removal machine based on hacksaw cutting principle, fan-shaped swing mechanism includes fan swing seat, fan
Pendulum motor, coupled drive axis, elastic limit device and fan pendulum are sat quietly；It fans swing seat side and passes through coupled drive axis and fan pendulum motor
Output axis connection, the other side is connect by screw with elastic force seat；It is quiet that fan pendulum motor and coupled drive axis are fixedly mounted on fan pendulum
On seat；Fan pendulum motor is stepper motor, when positive and negative direction rotates, just drags coupling of the arc-shaped steel saw componet along fan pendulum stationary seat
Center transmission shaft makees fan-shaped swing；Elastic limit device is used to limit the deflection for fanning swing seat.
In a kind of above-mentioned automatic slag removal machine based on hacksaw cutting principle, reciprocating sawing machine structure includes reciprocating motor, connection
Axis device, ball wire pole socket, ball screw, ball screw nut and inter-agency connection seat；Inter-agency connection seat is L-type harden structure,
It is that the connection of ball screw nut and fan pendulum stationary seat and the structure that is fixed to each other, reciprocating motor select stepper motor, reciprocating motor solid
It is scheduled in ball wire pole socket, is coupled by shaft coupling and ball screw, ball screw nut is fixed with fan pendulum stationary seat.
In a kind of above-mentioned automatic slag removal machine based on hacksaw cutting principle, lift in height mechanism includes lifting motor, rises
Connecting seat group between shaft coupling, lifting ball screw, lifting ball screw nut, lifting ball-screw seat, reciprocal/height mechanism drops
At；Lifting motor is servo motor；Between back and forth/height mechanism connecting seat be L-type harden structure, for lift ball screw nut with
Being connected and fixed between the ball wire pole socket of reciprocating sawing machine structure, lifting motor are fixed on lifting ball-screw seat and pass through lifting
Shaft coupling and lifting ball screw mating, lift connecting seat between ball screw nut and reciprocal/height mechanism and connect.
In a kind of above-mentioned automatic slag removal machine based on hacksaw cutting principle, complete machine connection seat is for complete machine and engine base, machine
The structure or inter-agency connection of device people and operation machine installation automatic slag removal machine.
Therefore, the invention has the advantages that：1, the present invention, which overcomes in all prior arts, is difficult to clean off weld seam and both sides
The welding slag of wall groove engaging portion sharp corner, entirely without scarfing cinder blind area；2, Non-intermittent low frequency impact acts on, weldment and all welding
System steady operation is unaffected；3, the welding slag of high bond strength type can equally be removed；4, it is used not only for ultra-narrow gap
MAG/MIG welds occasion, and traditional automatic welding of other scarfing cinders in need, semi-automatic welding, robot welding occasion can make
With, it is only necessary to increase the overall width of hacksaw blade.
Description of the drawings
Attached drawing 1 is the automatic slag removal machine complete machine structure schematic diagram cut based on hacksaw.
Attached drawing 2 is the cross-section structure enlarged diagram of arc-shaped steel saw componet and arc hacksaw elastic force holder assembly.
Attached drawing 3 is the overlooking structure diagram of elastic force seat.
Attached drawing 4 is hacksaw blade structural schematic diagram.
Attached drawing 5 is the structural schematic diagram of fan-shaped swing mechanism.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.In figure,
Hacksaw blade 1, saw blade seat 2, tilt clapboard 3, trip bolt 4, elastic force seat 5, spring guide 6, guide pin and cotter slot 7, spring
8, swing seat 9, spring stopper 10, coupled drive axis 11, fan pendulum stationary seat 12, fan pendulum motor 13, reciprocating motor 14, shaft coupling are fanned
Join between device 15, ball wire pole socket 16, ball screw 17, ball screw nut 18, inter-agency connection seat 19, reciprocal/height mechanism
Joint chair 20, lifting ball screw nut 21, lifting ball wire pole socket 22, lifting ball screw 23, lifting motor 24, lifting shaft coupling
Device 25, complete machine connection seat 26.
Embodiment：
A kind of automatic slag removal machine based on hacksaw cutting principle, mainly by arc-shaped steel saw componet, arc hacksaw elastic force seat, fan
Shape swing mechanism, reciprocating sawing machine structure and lift in height mechanism five big components composition.Arc-shaped steel saw componet is by hacksaw blade 1, saw blade
Seat 2, tilt clapboard 3, trip bolt 4 form；Wherein hacksaw blade 1 can be selected the Arm saw items of commodity and be restructured, that is, prescind
With processing screw hole；The top of saw blade seat 2 is equipped with tilt clapboard 3 and circular arc kerve, and lower part is equipped with guide pin and cotter slot 7,
Bottom is equipped with spring mounting hole.After more hacksaw blades 1 are installed on by trip bolt 4 in the circular arc kerve of saw blade seat 2, the saw on top
The flank of tooth is cambered surface, is coincide in favor of approximate with the face of weld after solidification.
Arc hacksaw elastic force seat is by elastic force seat 5, lower springs mounting hole, 7 and of spring guide 6, guide pin and cotter slot
Spring 8 forms.Elastic force seat 5 and the kidney slot of 2 lower part of saw blade seat are slidably matched, and pass through spring guide 6, guide pin and cotter slot
After 7 assemble with saw blade seat 2, on the serrated face of more hacksaw blades 1 composition plus after certain pressure, arc-shaped steel saw componet can be with respect to arc
Shape hacksaw elastic force seat makees elastic floating, that is, floats downward after pressurizeing, float after decompression.
The function of fan-shaped swing mechanism is that arc hacksaw component is driven to make fan-shaped pendulum along the central plane of actual welding groove
It is dynamic, thoroughly to overcome the scarfing cinder blind area of weld seam and two side groove engaging portion sharp corner.The mechanism is limited by fan swing seat 9, spring
Position device 10, coupled drive axis 11, fan pendulum stationary seat 12 and fan pendulum motor 13 form.9 side of fan swing seat passes through coupled drive axis
11 with fan pendulum motor 13 output axis connection, the other side is connect by screw with elastic force seat 5；Fan pendulum motor 13 and coupled drive axis
11 are fixedly mounted on fan pendulum stationary seat 12.Fan pendulum motor 13 is stepper motor, forward and reverse when being alternately rotated, and just drags arc-shaped steel
Saw componet makees fan-shaped swing along the coupled drive center of fan pendulum stationary seat 12.Elastic limit device 10 is used to fan the deflection of swing seat 9
Limit and sharp corner hacksaw blade 1 are close to, and structure is similar with the elastic steel ball of commodity.
Reciprocating sawing machine structure is the power plant that fan-shaped hacksaw component makees reciprocal sawing, and the device is by reciprocating motor 14, connection
Axis device 15, ball wire pole socket 16, ball screw 17, ball screw nut 18, inter-agency connection seat 19 form.Inter-agency connection seat
19 be L-type harden structure, is manufactured with aluminium alloy, and the structure is for connection between ball screw nut 18 and fan pendulum stationary seat 12 and mutual
It is fixed.Remaining all component is industrial general product, and reciprocating motor 14 selects stepper motor.
Lift in height mechanism is arc-shaped steel saw componet, arc hacksaw elastic force seat, fan-shaped swing mechanism and reciprocating sawing machine structure
Complete machine lifting power plant after assembling, function are every height cleared up after a layer and declined the layer uniform thickness automatically, to protect
The contact for demonstrate,proving arcuate serrated face and face of weld is consistent always.The power plant by connection seat 20 between reciprocal/height mechanism,
Lift 25 groups ball screw nut 21, lifting ball wire pole socket 22, lifting ball screw 23, lifting motor 24, lifting of shaft coupling
At.Lifting motor 24 is servo motor, and connecting seat 20 is the L-type harden structure of aluminium alloy manufacture between reciprocal/height mechanism, for rising
It is connected and fixed between drop ball screw nut 21 and the ball wire pole socket 16 of reciprocating sawing machine structure, remaining all component is that industry is logical
Use product.
Complete machine connection seat 26 installs the structure or machine of this smoothing machine for complete machine and engine base, robot, each generic operation machine etc.
Connection between structure.
The specific embodiment of description herein is only to be given an example to the technology of the present invention.It is of the art
Technical staff can make various modifications or additions to the described embodiments or be substituted using similar fashion, but simultaneously
Without departing from the present invention or beyond the scope of the appended claims.
Although more herein used hacksaw blade 1, saw blade seat 2, tilt clapboard 3, trip bolt 4, elastic force seat 5, spring
Guide rod 6, guide pin and cotter slot 7, spring 8, fan swing seat 9, spring stopper 10, coupled drive axis 11, fan pendulum stationary seat
12, pendulum motor 13, reciprocating motor 14, shaft coupling 15, ball wire pole socket 16, ball screw 17, ball screw nut 18, mechanism are fanned
Between connection seat 20, lifting ball screw nut 21, lifting ball wire pole socket 22, lifting rolling between connection seat 19, reciprocal/height mechanism
The terms such as ballscrew 23, lifting motor 24, lifting shaft coupling 25, complete machine connection seat 26, but be not precluded using other terms
Possibility is construed as any the use of these items is only for more easily describing and explaining the essence of the present invention
It is a kind of it is additional limitation all with the present invention disagree.
Claims (7)
1. a kind of automatic slag removal machine based on hacksaw cutting principle, which is characterized in that including arc-shaped steel saw componet, arc hacksaw group
Part is arranged on arc hacksaw elastic force seat, arc hacksaw elastic force seat arc hacksaw elastic force seat sector swing mechanism and reciprocating sawing machine
Structure is connected and fixed；Reciprocating sawing machine structure is connect by inter-agency connection seat with lift in height mechanism.
2. a kind of automatic slag removal machine based on hacksaw cutting principle according to claim 1, which is characterized in that arc hacksaw
Component includes hacksaw blade, saw blade seat, tilt clapboard, trip bolt；The top of saw blade seat is equipped with tilt clapboard and arc-shaped kerve,
Lower part is equipped with guide pin and cotter slot, and bottom is equipped with spring mounting hole；More hacksaw blades are installed on arc-shaped by trip bolt
After in kerve, the serrated face on top is cambered surface, is coincide in favor of approximate with the face of weld after solidification.
3. a kind of automatic slag removal machine based on hacksaw cutting principle according to claim 1, which is characterized in that arc hacksaw
Elastic force seat includes elastic force seat, lower springs mounting hole, spring guide and spring；Elastic force seat and the kidney slot of saw blade seat lower part slide
Cooperation, by spring guide, guide pin and cotter slot add one with after the assembly of saw blade seat on the serrated face of more saw blades composition
After constant-pressure, arc-shaped steel saw componet can opposing arcuate hacksaw elastic force seat make elastic floating, i.e., pressurization float downward, decompression float.
4. a kind of automatic slag removal machine based on hacksaw cutting principle according to claim 1, which is characterized in that sector is swung
Mechanism includes that fan swing seat, fan pendulum motor, coupled drive axis, elastic limit device and fan pendulum are sat quietly；Fan swing seat side passes through
The output axis connection of coupled drive axis and fan pendulum motor, the other side is connect by screw with elastic force seat；It fans pendulum motor and coupling passes
Moving axis is fixedly mounted on fan pendulum stationary seat；Fan pendulum motor is stepper motor, when positive and negative direction rotates, just drags arc hacksaw
Component makees fan-shaped swing along the coupled drive axis center of fan pendulum stationary seat；Elastic limit device is used to limit the deflection for fanning swing seat
Position.
5. a kind of automatic slag removal machine based on hacksaw cutting principle according to claim 1, which is characterized in that reciprocal sawing
Mechanism includes reciprocating motor, shaft coupling, ball wire pole socket, ball screw, ball screw nut and inter-agency connection seat；It is inter-agency
Connection seat is L-type harden structure, is that the connection of ball screw nut and fan pendulum stationary seat and the structure that is fixed to each other, reciprocating motor select step
Stepper motor, reciprocating motor are fixed in ball wire pole socket, are coupled by shaft coupling and ball screw, and ball screw nut is put with fan
Stationary seat is fixed.
6. a kind of automatic slag removal machine based on hacksaw cutting principle according to claim 1, which is characterized in that lift in height
Mechanism includes lifting motor, lifting shaft coupling, lifting ball screw, lifting ball screw nut, lifts ball-screw seat, is past
Connecting seat forms between multiple/height mechanism；Lifting motor is servo motor；Connecting seat is L-type harden structure between back and forth/height mechanism,
For lifting being connected and fixed between ball screw nut and the ball wire pole socket of reciprocating sawing machine structure, lifting motor is fixed on lifting
On ball-screw seat and by lifting shaft coupling and lifting ball screw mating, lifting ball screw nut and reciprocal/height machine
Connecting seat connects between structure.
7. a kind of automatic slag removal machine based on hacksaw cutting principle according to claim 1, which is characterized in that complete machine couples
Seat is for complete machine and engine base, the structure of robot and operation machine installation automatic slag removal machine or inter-agency connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555494.8A CN108480771B (en) | 2018-06-01 | 2018-06-01 | Automatic slag removal machine based on hacksaw cutting principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555494.8A CN108480771B (en) | 2018-06-01 | 2018-06-01 | Automatic slag removal machine based on hacksaw cutting principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108480771A true CN108480771A (en) | 2018-09-04 |
| CN108480771B CN108480771B (en) | 2020-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810555494.8A Active CN108480771B (en) | 2018-06-01 | 2018-06-01 | Automatic slag removal machine based on hacksaw cutting principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091327A (en) * | 2020-09-11 | 2020-12-18 | 滁州职业技术学院 | Pipe end cutting processing equipment for building |
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|---|---|---|---|---|
| CN201579239U (en) * | 2009-12-11 | 2010-09-15 | 河北华油钢管设计研究院有限公司 | Welding slag cleaning device outside straight welded pipe |
| CN202684374U (en) * | 2012-07-16 | 2013-01-23 | 太原市冶金机械厂 | Automatic slag clearing device for surfacing welding machine |
| CN203992542U (en) * | 2014-05-13 | 2014-12-10 | 济南伦渠数控机电有限公司 | A kind of angle-cleaning machine of visiting milling apparatus under arm advanceable |
| CN205888478U (en) * | 2016-06-23 | 2017-01-18 | 重庆市金泽鑫科技有限公司 | Steel pipe automatic welding production line removes welding slag device |
| CN207254806U (en) * | 2017-09-11 | 2018-04-20 | 南通市电站阀门有限公司 | Deep hole slag removal tool |
-
2018
- 2018-06-01 CN CN201810555494.8A patent/CN108480771B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201579239U (en) * | 2009-12-11 | 2010-09-15 | 河北华油钢管设计研究院有限公司 | Welding slag cleaning device outside straight welded pipe |
| CN202684374U (en) * | 2012-07-16 | 2013-01-23 | 太原市冶金机械厂 | Automatic slag clearing device for surfacing welding machine |
| CN203992542U (en) * | 2014-05-13 | 2014-12-10 | 济南伦渠数控机电有限公司 | A kind of angle-cleaning machine of visiting milling apparatus under arm advanceable |
| CN205888478U (en) * | 2016-06-23 | 2017-01-18 | 重庆市金泽鑫科技有限公司 | Steel pipe automatic welding production line removes welding slag device |
| CN207254806U (en) * | 2017-09-11 | 2018-04-20 | 南通市电站阀门有限公司 | Deep hole slag removal tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091327A (en) * | 2020-09-11 | 2020-12-18 | 滁州职业技术学院 | Pipe end cutting processing equipment for building |
| CN112091327B (en) * | 2020-09-11 | 2021-09-21 | 滁州职业技术学院 | Pipe end cutting processing equipment for building |
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| Publication number | Publication date |
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| CN108480771B (en) | 2020-03-13 |
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