CN103878393B - Spool beveling machine - Google Patents
Spool beveling machine Download PDFInfo
- Publication number
- CN103878393B CN103878393B CN201410125235.3A CN201410125235A CN103878393B CN 103878393 B CN103878393 B CN 103878393B CN 201410125235 A CN201410125235 A CN 201410125235A CN 103878393 B CN103878393 B CN 103878393B
- Authority
- CN
- China
- Prior art keywords
- lifting platform
- fixed bar
- swing arm
- guide post
- slide cartridge
- Prior art date
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/16—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/16—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
- B23B5/161—Devices attached to the workpiece
- B23B5/162—Devices attached to the workpiece with an internal clamping device
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
The present invention discloses spool beveling machine, comprise bearing support, bearing support is provided with fixed bar, described fixed bar is provided with stationary magazine creel and back-up ring, cylinder is fixed on back-up ring, the output of described cylinder is connected with fixed bar by slide cartridge, slide cartridge is arranged between stationary magazine creel and back-up ring, lower link is had at the two ends chain connection of slide cartridge, lower link end hinge is connected with swing arm, swing arm by upper pendulum bar and draft link and stationary magazine creel hinged, bearing support is provided with lifting tube and guide post, screw mandrel is provided with in lifting tube, screw mandrel upper end end sleeve is equipped with lifting platform, lifting platform has through hole, guide post is through through hole, also comprise motor and cutter, Cutting tool installation manner is on lifting platform, the output of described motor is connected with bevel gear and bevel gear coordinates with helical gear through lifting tube.
Description
Technical field
The present invention relates to Profile cut-off machine, specifically refer to spool beveling machine.
Background technology
Steel plate beveling machine is used in deburring and the retaining wall on slope of the front sheet metal of welding, if this owner utilizes hobbing principle, by required angle, milling is carried out to steel plate edge, to obtain the groove needed for welding, is applicable to the materials such as steel, cast iron, rigid plastics, non-ferrous metal.Beveling machine be pipeline or flat board before welding end face carry out the specific purpose tool of chamfering groove, the angle solving the operating procedure such as gas flame cuttiug, sanding machine grinding is lack of standardization, domatic coarse, the shortcoming such as operating noise is large, there is the advantages such as easy and simple to handle, angular standard, smooth surface.Beveling machine has plurality of specifications, and be a kind of advanced tools for the work such as industry specialty installation, maintenance such as electric power, oil, chemical industry, shipbuilding, steel structure provide, this instrument can improve work efficiency greatly, reduces costs.
But in the groove processing procedure of reality, for improving working (machining) efficiency, usually tubular workpiece is adopted to the method for clamping circumgyration incision, but when when cutting, cutting tool contacts with tubing edge, larger interaction force can be produced, make the clamping of pipe fitting easily occur loosening, the tenesmus of pipe fitting can be caused time serious, and then certain damage is caused to beveling machine or tubing edge.
Summary of the invention
The object of the present invention is to provide spool beveling machine, to avoid when processing pipe fitting clamping force abrupt change and then cause the tenesmus of pipe fitting, strengthening the clamping dynamics to pipe fitting.
Object of the present invention is achieved through the following technical solutions:
Spool beveling machine, comprise bearing support, described bearing support is provided with fixed bar and drive motors, the output of drive motors is connected with the bottom of fixed bar, described fixed bar is provided with stationary magazine creel and back-up ring, also comprise cylinder, cylinder is fixed on back-up ring, the output of described cylinder is connected with fixed bar by slide cartridge, slide cartridge is arranged between stationary magazine creel and back-up ring, lower link is had at the two ends chain connection of slide cartridge, lower link end hinge is connected with swing arm, swing arm by upper pendulum bar and draft link and stationary magazine creel hinged, the two ends of fixed bar have groove, in described slide cartridge, multiple roller is installed, roller-coaster is arranged in groove, bearing support is provided with lifting tube and guide post, screw mandrel is provided with in lifting tube, screw mandrel upper end end sleeve is equipped with lifting platform, screw mandrel lower end is provided with helical gear, the bottom of lifting platform is provided with blind hole, in blind hole, screw is installed, screw mandrel upper end is through screw, lifting platform has through hole, guide post is through through hole, also comprise motor and cutter, Cutting tool installation manner is on lifting platform, the output of described motor is connected with bevel gear and bevel gear coordinates with helical gear through lifting tube.When the present invention uses, first pipe fitting is sleeved on outside fixed bar, adjusting cylinders makes its output move up and drives slide cartridge rising, lower link drives swing arm and pipe fitting inner wall to fit, stationary magazine creel is fixedly installed on the end, upper end of fixed bar, by upper pendulum bar and draft link for swing arm provides strong supporting role, drive motors starts to drive fixed bar to rotate, when the active force of swing arm to pipe fitting inner wall reaches maximum, by the cutting tool on lathe, rotation processing is carried out to tubing edge, the swing arm that can regulate arbitrarily can use the pipe bevel process with various diameter, during cutting, interaction force between cutting tool and pipe fitting can be delivered on fixed bar by swing arm, the two ends of fixed bar have groove, roller in slide cartridge freely can move up and down in groove, the material of roller is rubber or plastics, itself there is certain elasticity, while the sliding friction between slide cartridge and fixed bar is transformed to rolling friction, also the interaction force produced during cutting can be cushioned by roller, reduce the impaired situation of local stress of the present invention to occur, on, draft link and lower link, fixed bar forms a triangular framing, the principle the highest according to triangle stability, make swing arm can provide stable clamping force for pipe fitting inner wall, ensure the efficiency of pipe bevel process,
Cutting tool is fixed on lifting platform, electric machine rotation, bevel gear on motor output end coordinates with helical gear, screw mandrel is freely rotated in lifting tube, and the upper end of screw mandrel and screw threaded engagement, screw is fixed on bottom lifting platform, screw drives lifting platform to move up, guide post is through lifting platform, when being subject to active force when lifting platform, guide post can keep the stress balance in whole lifting platform horizontal direction, avoid the stress raisers of lifting platform and cause lifting tube internals impaired, and then strengthen the protective effect of motor output end and lifting tube junction, improve lifting platform to the stable support function of cutting tool, the guide post arranged also can play certain radial fixation to lifting platform, when screw mandrel rotates, in screw rotates rising on screw mandrel, interaction force can be produced between screw and screw mandrel, screw can drive lifting platform to produce the trend of rotary motion in the horizontal direction, can cause cutting tool on cutting pipes edge concrete some time produce skew, reduce the precision adding man-hour, and guide post runs through lifting platform, guide post and screw mandrel 2 structure being aligneds, lifting platform is prevented to rotate, ensure that lifting platform is in vertical direction to while cutting tool stable support, improve lifting platform in the horizontal direction to the stable support of cutting tool, improve the precision of pipe bevel processing.
The top of described guide post is provided with boss, and the middle part of guide post is provided with postive stop baffle, and lifting platform is slidably arranged between boss and postive stop baffle.The postive stop baffle arranged in the middle part of boss and guide post that guide post top is arranged makes lifting platform move up and down in the interval fixed, cutting tool is prevented excessively to rise when pipe bevel process or decline, while avoiding cutting tool to occur mismachining tolerance, also reduce after lifting platform declines and end, lifting tube upper end is impacted.
Described postive stop baffle is provided with buffer board, and buffer board is connected with postive stop baffle by spring.Buffer board can decline at lifting platform and before contact with postive stop baffle, when lifting platform is declined self with effect of inertia elimination, to reduce the impact to postive stop baffle bottom lifting platform.
Described swing arm is also provided with backing plate away from the end face of fixed bar one end, and the surface area of described backing plate is greater than swing arm face area.The backing plate arranged can increase the contact area with pipe fitting inner wall further, ensures the stability of clamping.
Described postive stop baffle is provided with travel switch and travel switch is connected with motor, it is consistent that level height and the spring at described travel switch place are compressed into level height to greatest extent.Lifting platform contacts with buffer board when declining, buffer board is stressed to be moved down, spring stress compresses, when being compressed to greatest extent, lifting platform contacts with travel switch, and travel switch controls motor stalls, and lifting platform stops moving down, prevent lifting platform from causing excessive damage to spring, improve service life of the present invention.
Described roller is rubber wheel.As preferably, can there is certain deformation in rubber wheel after slide cartridge is subject to stress, and the reaction force that deformation produces can by stress elimination.
The present invention compared with prior art, has following advantage and beneficial effect:
1, spool beveling machine of the present invention, when the active force of swing arm to pipe fitting inner wall reaches maximum, by the cutting tool on lathe, carry out rotation processing to tubing edge, the swing arm that can regulate arbitrarily can use the pipe bevel process with various diameter; Upper and lower fork and lower link, fixed bar form a triangular framing, the principle the highest according to triangle stability, make swing arm can provide stable clamping force for pipe fitting inner wall, ensure the efficiency of pipe bevel process; Guide post runs through lifting platform, guide post and screw mandrel 2 structure being aligneds, lifting platform is prevented to rotate, ensure that lifting platform is in vertical direction to while cutting tool stable support, improve lifting platform in the horizontal direction to the stable support of cutting tool, improve the precision of pipe bevel processing;
2, spool beveling machine of the present invention, lifting platform contacts with buffer board when declining, buffer board is stressed to be moved down, spring stress compresses, and when being compressed to greatest extent, lifting platform contacts with travel switch, travel switch controls motor stalls, lifting platform stops moving down, and prevents lifting platform from causing excessive damage to spring, improves service life of the present invention.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms a application's part, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is structural representation of the present invention;
Mark and corresponding parts title in accompanying drawing:
1-fixed bar, 2-stationary magazine creel, 3-cylinder, 4-slide cartridge, 5-swing arm, 6-upper pendulum bar, 7-draft link, 8-roller, 9-groove, 10-lower link, 11-buffer board, 12-spring, 13-travel switch, 14-backing plate, 15-pipe fitting, 16-base plate, 17-lifting tube, 18-screw mandrel, 19-lifting platform, 20-helical gear, 21-blind hole, 22-screw, 23-guide post, 24-motor, 25-bevel gear, 26-boss, 27-bearing support, 28-back-up ring, 29-drive motors, 30-cutter, 31-postive stop baffle.
Detailed description of the invention
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment 1
As shown in Figure 1, a kind of pipe fitting 15 chamfering device of the present invention, comprise bearing support 27, described bearing support 27 is provided with fixed bar 1 and drive motors 29, the output of drive motors 29 is connected with the bottom of fixed bar 1, described fixed bar 1 is provided with stationary magazine creel 2 and back-up ring 28, also comprise cylinder 3, cylinder 3 is fixed on back-up ring 28, the output of described cylinder 3 is connected with fixed bar 1 by slide cartridge 4, slide cartridge 4 is arranged between stationary magazine creel 2 and back-up ring 28, lower link 10 is had at the two ends chain connection of slide cartridge 4, lower link 10 end hinge is connected with swing arm 5, swing arm 5 passes through upper pendulum bar 6 and draft link 7 is hinged with stationary magazine creel 2, the two ends of fixed bar 1 have groove 9, in described slide cartridge 4, multiple roller 8 is installed, roller 8 is slidably arranged in groove 9, bearing support 27 is provided with lifting tube 17 and guide post 23, screw mandrel 18 is provided with in lifting tube 17, screw mandrel 18 upper end end sleeve is equipped with lifting platform 19, screw mandrel 18 lower end is provided with helical gear 20, the bottom of lifting platform 19 is provided with blind hole 21, screw 22 is installed in blind hole 21, screw mandrel 18 upper end is through screw 22, lifting platform 19 has through hole, guide post 23 is through through hole, also comprise motor 24 and cutter 30, cutter 30 is arranged on lifting platform 19, and the output of described motor 24 is connected with bevel gear 25 and bevel gear 25 coordinates with helical gear 20 through lifting tube 17.
When the present invention uses, first pipe fitting 15 is sleeved on outside fixed bar 1, adjusting cylinders 3 make its output move up drive slide cartridge 4 rise, lower link drives swing arm 5 and pipe fitting 15 inwall to fit, stationary magazine creel 2 is fixedly installed on the end, upper end of fixed bar 1, by upper pendulum bar 6 and draft link 7 for swing arm 5 provides strong supporting role, drive motors 29 starts to drive fixed bar 1 to rotate, when the active force of swing arm 5 pairs of pipe fitting 15 inwalls reaches maximum, by the cutting tool 30 on lathe, rotation processing is carried out to pipe fitting 15 edge, the swing arm 5 that can regulate arbitrarily can use the pipe fitting 15 groove process with various diameter, during cutting, interaction force between cutting tool 30 and pipe fitting 15 can be delivered on fixed bar 1 by swing arm 5, the two ends of fixed bar 1 have groove 9, roller 8 in slide cartridge 4 freely can move up and down in groove 9, the material of roller 8 is rubber or plastics, itself there is certain elasticity, while the sliding friction between slide cartridge 4 and fixed bar 1 is transformed to rolling friction, also the interaction force produced during cutting can be cushioned by roller 8, reduce the impaired situation of local stress of the present invention and occur, upper and lower fork 6,7 and lower link 10, fixed bar 1 form a triangular framing, the principle the highest according to triangle stability, make swing arm 5 can provide stable clamping force for pipe fitting 15 inwall, ensure the efficiency of pipe fitting 15 groove process,
Cutting tool 30 is fixed on lifting platform 19, motor 24 rotates, bevel gear 25 on motor 24 output coordinates with helical gear 20, screw mandrel 18 is freely rotated in lifting tube 17, and the upper end of screw mandrel 18 and screw 22 threaded engagement, screw 22 is fixed on bottom lifting platform 19, screw 22 drives lifting platform 19 to move up, guide post 23 is through lifting platform 19, when being subject to active force when lifting platform 19, guide post 23 can keep the stress balance in whole lifting platform 19 horizontal direction, avoid the stress raisers of lifting platform 19 and cause lifting tube 17 internals impaired, and then strengthen the protective effect of motor 24 output and lifting tube 17 junction, improve the stable support function of lifting platform 19 pairs of cutting tools 30, the guide post 23 arranged also can play certain radial fixation to lifting platform 19, when screw mandrel 18 rotates, in screw 22 rotates rising on screw mandrel 18, guide post 23 runs through lifting platform 19, guide post 23 and screw mandrel 18 two structure being aligneds, prevent lifting platform 19 to rotate, and ensures that lifting platform 19 is in vertical direction to while cutting tool 30 stable support, improve lifting platform 19 in the horizontal direction to the stable support of cutting tool 30, improve the precision of pipe fitting 15 retaining wall on slope.
Embodiment 2
As shown in Figure 1, the present embodiment is on the basis of embodiment 1, and the top of described guide post 23 is provided with boss 26, and the middle part of guide post 23 is provided with postive stop baffle 31, and lifting platform 19 is slidably arranged between boss 26 and postive stop baffle 31.The postive stop baffle 31 arranged in the middle part of the boss 26 that guide post 23 top is arranged and guide post 23 makes lifting platform 19 move up and down in the interval fixed, cutting tool 30 is prevented excessively to rise when pipe fitting 15 groove process or decline, while avoiding cutting tool 30 to occur mismachining tolerance, also reduce after lifting platform 19 declines and end, lifting tube 17 upper end is impacted.
Embodiment 3
As shown in Figure 1, the present embodiment is on the basis of embodiment 1, and described swing arm 5 is provided with backing plate 14 away from the end face of fixed bar 1 one end, and the surface area of described backing plate 14 is greater than the face area of swing arm 5; Described roller 8 is rubber wheel.When clamping pipe fitting 15 inwall, swing arm 5 and pipe fitting 15 contact internal walls, the swing arm 5 of arc surface thoroughly can be fitted with pipe fitting 15 inwall, improves the chucking power of swing arm 5 pairs of pipe fittings 15; The backing plate 14 that arc surface is arranged can increase the contact area with pipe fitting 15 inwall further, ensures the stability of clamping.
Embodiment 4
As shown in Figure 1, the present embodiment is on the basis of embodiment 1, and described postive stop baffle 31 is provided with buffer board 11, and buffer board 11 is connected with postive stop baffle 31 by spring 12; Described postive stop baffle 31 is provided with travel switch 13 and travel switch 13 is connected with motor 24, it is consistent that level height and the spring 12 at described travel switch 13 place are compressed into level height to greatest extent.Buffer board 11 can decline at lifting platform 19 and before contacting with postive stop baffle 31, when lifting platform 19 is declined self with effect of inertia eliminate, to reduce the impact to postive stop baffle 31 bottom lifting platform 19; Contact with buffer board 11 when lifting platform 19 declines, buffer board 11 is stressed to be moved down, spring 12 forced compression, when being compressed to greatest extent, lifting platform 19 contacts with travel switch 13, and travel switch 13 controls motor 24 and stops operating, and lifting platform 19 stops moving down, prevent lifting platform 19 pairs of springs 12 from causing excessive damage, improve service life of the present invention.
As preferably, can there is certain deformation in rubber wheel after slide cartridge 4 is subject to stress, and the reaction force that deformation produces can by stress elimination.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. spool beveling machine, comprise bearing support (27), described bearing support (27) is provided with fixed bar (1) and drive motors (29), the output of drive motors (29) is connected with the bottom of fixed bar (1), it is characterized in that: stationary magazine creel (2) and back-up ring (28) are installed on described fixed bar (1), also comprise cylinder (3), cylinder (3) is fixed on back-up ring (28), the output of described cylinder (3) is connected with fixed bar (1) by slide cartridge (4), slide cartridge (4) is arranged between stationary magazine creel (2) and back-up ring, lower link (10) is had at the two ends chain connection of slide cartridge (4), lower link (10) end hinge is connected with swing arm (5), swing arm (5) is hinged by upper pendulum bar (6) and draft link (7) and stationary magazine creel (2), the two ends of fixed bar (1) have groove (9), multiple roller (8) is installed in described slide cartridge (4), roller (8) is slidably arranged in groove (9), bearing support (27) is also provided with lifting tube (17) and guide post (23), screw mandrel (18) is provided with in lifting tube (17), screw mandrel (18) upper end end sleeve is equipped with lifting platform (19), screw mandrel (18) lower end is provided with helical gear (20), the bottom of lifting platform (19) is provided with blind hole (21), screw (22) is installed in blind hole (21), screw mandrel (18) upper end is through screw (22), (19) have through hole to lifting platform, guide post (23) is through through hole, also comprise motor (24) and cutter (30), cutter (30) is arranged on lifting platform (19), the output of described motor (24) is connected with bevel gear (25) and bevel gear (25) coordinates with helical gear (20) through lifting tube (17), the top of described guide post (23) is provided with boss (26), and the middle part of guide post (23) is provided with postive stop baffle (31), and lifting platform (19) is slidably arranged between boss (26) and postive stop baffle (31), described swing arm (5) is also provided with backing plate (14) away from the end face of fixed bar (1) one end, and the surface area of described backing plate (14) is greater than swing arm (5) face area.
2. spool beveling machine according to claim 1, is characterized in that: on described postive stop baffle (31), be provided with buffer board (11), and buffer board (11) is connected with postive stop baffle (31) by spring (12).
3. spool beveling machine according to claim 2, it is characterized in that: on described postive stop baffle (31), be provided with travel switch (13) and travel switch (13) is connected with motor (24), it is consistent that level height and the spring (12) at described travel switch (13) place are compressed into level height to greatest extent.
4. the spool beveling machine according to claim 1 ~ 3 any one, is characterized in that: described roller (8) is rubber wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410125235.3A CN103878393B (en) | 2014-03-31 | 2014-03-31 | Spool beveling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410125235.3A CN103878393B (en) | 2014-03-31 | 2014-03-31 | Spool beveling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103878393A CN103878393A (en) | 2014-06-25 |
| CN103878393B true CN103878393B (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410125235.3A Expired - Fee Related CN103878393B (en) | 2014-03-31 | 2014-03-31 | Spool beveling machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN103878393B (en) |
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|---|---|---|---|---|
| CN106180898A (en) * | 2016-07-28 | 2016-12-07 | 曹淅 | Beveling machine |
| CN107378759A (en) * | 2017-06-09 | 2017-11-24 | 安徽机电职业技术学院 | A kind of large-size pipe fixing device for being used to be machined |
| CN107363697A (en) * | 2017-08-03 | 2017-11-21 | 安徽机电职业技术学院 | A kind of derusting machinery being machined with Large Steel pipe fitting Surface Machining |
| CN108176875A (en) * | 2018-01-10 | 2018-06-19 | 刘风岐 | For the numerical control pneumatic multiple drill press of geothermal well filter pipe |
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| CN112372078B (en) * | 2020-11-04 | 2022-09-20 | 芜湖天航重工股份有限公司 | Auxiliary processing device for welding wind power tower cylinder |
| CN112620748A (en) * | 2020-12-17 | 2021-04-09 | 天津市华油管道科技有限公司 | Quick chamfering machine for spiral pipe |
| CN113894707A (en) * | 2021-10-09 | 2022-01-07 | 重庆芯洁科技有限公司 | Rotating disc type sand blasting machine |
| CN113909513A (en) * | 2021-10-14 | 2022-01-11 | 建科机械（天津）股份有限公司 | Clamping device |
| CN116858670B (en) * | 2023-07-07 | 2024-04-16 | 德州豪沃机械制造有限公司 | Automatic detection device for double-sided stamping plate |
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| GB1166864A (en) * | 1966-02-07 | 1969-10-15 | Roto Finish Ltd | Improvements in or relating to The Surface Treatment of Workpieces |
| SU932711A1 (en) * | 1979-02-23 | 1984-02-23 | Ордена Ленина И Ордена Трудового Красного Знамени Институт Электросварки Им.Е.О.Патона | Apparatus for removing flush |
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| CN102179554A (en) * | 2011-04-18 | 2011-09-14 | 中国电子***工程第四建设有限公司 | Pipe end groove forming machine |
| CN202742051U (en) * | 2012-04-05 | 2013-02-20 | 中国石油天然气集团公司 | Internal expansion type clamping mechanism for large-diameter fire bending elbow beveling machine |
| CN103286361A (en) * | 2012-07-11 | 2013-09-11 | 北京豪特耐管道设备有限公司 | Facing machine for end of plastic pipe |
| CN203778776U (en) * | 2014-03-31 | 2014-08-20 | 成都振中电气有限公司 | Distribution wire pipeline chamfering machining device |
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2014
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1166864A (en) * | 1966-02-07 | 1969-10-15 | Roto Finish Ltd | Improvements in or relating to The Surface Treatment of Workpieces |
| SU932711A1 (en) * | 1979-02-23 | 1984-02-23 | Ордена Ленина И Ордена Трудового Красного Знамени Институт Электросварки Им.Е.О.Патона | Apparatus for removing flush |
| CN2449845Y (en) * | 2000-11-30 | 2001-09-26 | 武汉市高雄电力设备有限公司 | Chamfering machine |
| CN102179554A (en) * | 2011-04-18 | 2011-09-14 | 中国电子***工程第四建设有限公司 | Pipe end groove forming machine |
| CN202742051U (en) * | 2012-04-05 | 2013-02-20 | 中国石油天然气集团公司 | Internal expansion type clamping mechanism for large-diameter fire bending elbow beveling machine |
| CN103286361A (en) * | 2012-07-11 | 2013-09-11 | 北京豪特耐管道设备有限公司 | Facing machine for end of plastic pipe |
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| Publication number | Publication date |
|---|---|
| CN103878393A (en) | 2014-06-25 |
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Effective date of registration: 20171023 Address after: 413200 Yiyang city of Hunan province Nanxian town turn embankment No. 232 South Island Patentee after: Tan Jianxin Address before: 610000 Sichuan city of Chengdu Province Economic and Technological Development Zone Zhenzhong Road No. 1 Patentee before: Chengdu Zhenzhong Electric Co., Ltd. |
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