阅读说明：本技术 一种精密管道内壁高精度打磨设备 (High-precision polishing equipment for inner wall of precise pipeline ) 是由 陈鹏宇 于 2021-06-17 设计创作，主要内容包括：本发明公开了一种精密管道内壁高精度打磨设备,包括工作台,所述工作台上侧设置有两个左右镜像设置的夹紧座,所述夹紧座内设置有刀架移动机构,所述夹紧座内还设置有管道夹紧机构；本发明利用管道夹紧机构带动管道转动,采用管道自转的方式与道具抵接达到打磨的目的,使得在打磨较长管道是,能确保刀具的进给路径稳定确保打磨精度,同时在刀具固定座上设置的斜向排气口在打磨时能及时清理碎屑,避免碎屑影响刀具打磨,进一步挺高打磨精度,而且本发明的结构简单,操作方便,便于推广。(The invention discloses high-precision polishing equipment for the inner wall of a precise pipeline, which comprises a workbench, wherein two clamping seats arranged in a left-right mirror image mode are arranged on the upper side of the workbench, a tool rest moving mechanism is arranged in each clamping seat, and a pipeline clamping mechanism is also arranged in each clamping seat; the pipeline clamping mechanism is utilized to drive the pipeline to rotate, and the pipeline is abutted against the prop in a self-rotating mode to achieve the purpose of polishing, so that when a longer pipeline is polished, the stable feeding path of the cutter can be ensured, the polishing precision is ensured, meanwhile, the inclined exhaust port arranged on the cutter fixing seat can timely clean the chips during polishing, the chips are prevented from influencing the polishing of the cutter, and the polishing precision is further increased.)

1. The utility model provides a precision pipeline inner wall high accuracy equipment of polishing, includes the workstation, its characterized in that: two clamping seats which are arranged in a left-right mirror image mode are arranged on the upper side of the workbench, a tool rest moving mechanism is arranged in each clamping seat, and a pipeline clamping mechanism is further arranged in each clamping seat;

the tool rest moving mechanism comprises a guide rod fixing seat which forms a pair of sliding pairs with the clamping seat on the left side, a tool guide rod which forms a pair of sliding pairs with the clamping seat on the right side is fixed on the right end face of the guide rod fixing seat, the tool guide rod is in sliding fit with the tool fixing seat, and the tool rest moving mechanism is used for moving a tool;

the pipeline clamping mechanism comprises a fixed roller rotating seat which is annularly arranged by taking the guide rod fixing seat as a center and forms a pair of revolute pairs with the clamping seat, four workpiece fixing rollers which are circumferentially distributed by taking the guide rod fixing seat as a center are arranged in the fixed roller rotating seat, and the pipeline clamping mechanism is used for clamping a pipeline.

2. The precision pipeline inner wall high-precision grinding equipment as claimed in claim 1, wherein: the workbench is internally provided with an opening upward clamping seat sliding cavity, the left end wall of the clamping seat sliding cavity is rotationally matched with a clamping seat screw rod which extends rightwards and penetrates through the clamping seat sliding cavity to the outside, and a pair of sliding pairs is formed between the clamping seat and the clamping seat sliding cavity on the right side and is in threaded fit connection with the clamping seat screw rod.

3. The precision pipeline inner wall high-precision grinding equipment as claimed in claim 1, wherein: the left side fixed roller rotating seat outside is equipped with one the guide bar fixing base is the annular chamber that central annular set up, the annular chamber left side is equipped with and is located the left side fixed roller rotating seat upside and with the left side press from both sides tight seat fixed connection's rotation motor, it is fixed with to the right side to extend to rotate the motor shaft in the annular chamber to rotate the motor right-hand member face, left side be fixed with on the outer disc of fixed roller rotating seat be located in the annular chamber and with the guide bar fixing base is central annular set up annular rack, rotate motor shaft right side end be fixed with annular rack toothing's rotation straight-teeth gear, be equipped with the bayonet lock chamber in the guide bar fixing base, left side be equipped with the bayonet lock sliding chamber that the opening is up in the clamping seat, bayonet lock sliding chamber sliding fit has the magnetic bayonet lock that corresponds with the bayonet lock chamber, be fixed with the bayonet lock electro-magnet on the bayonet lock sliding chamber lower end wall, a bayonet spring is fixed between the bayonet electromagnet and the magnetic bayonet.

4. The precision pipeline inner wall high-precision grinding equipment as claimed in claim 1, wherein: the tool rest moving mechanism comprises a motor shaft arranged in the guide rod fixing seat, a tool seat screw rod cavity located on the right side of the motor shaft is arranged in the tool guide rod, a tool seat screw rod shaft extending rightwards to penetrate through the tool seat screw rod cavity to the right end wall of the tool seat screw rod cavity is fixed on the right end face of the motor shaft, and a tool seat screw rod located in the tool seat screw rod cavity is fixed on the tool seat screw rod shaft.

5. The precision pipeline inner wall high-precision grinding equipment as claimed in claim 1, wherein: the cutter fixing seat is in threaded fit connection with the cutter seat screw rod, a bevel gear transmission cavity which is annularly arranged by taking the cutter guide rod as a center is arranged in the cutter fixing seat, six cutter sliding cavities which are circumferentially distributed by taking the cutter guide rod as a center and have outward openings are arranged on the outer side of the bevel gear transmission cavity, a ring gear which is annularly arranged by taking the cutter guide rod as a center and extends leftwards into the bevel gear transmission cavity is rotationally matched with the right end wall of the bevel gear transmission cavity, a ring bevel gear which is positioned in the bevel gear transmission cavity is fixed on the left end surface of the ring gear, a cutter screw rod which extends outwards into the cutter sliding cavity and extends inwards into the bevel gear transmission cavity is rotationally matched with the outer side wall of the bevel gear transmission cavity, and a cutter which is in sliding fit with the cutter sliding cavity is connected with the outer end of the cutter screw rod in a threaded fit manner, and a driven bevel gear meshed with the annular bevel gear is fixed at the tail end of the inner side of the cutter screw rod.

6. The precision pipeline inner wall high-precision grinding equipment as claimed in claim 5, wherein: the utility model discloses a cutter adjustment gear, including cutter fixing base, ring gear, cutter fixing base, cutter guide bar, cutter adjustment disc, cutter guide bar, annular ventilation chamber outside intercommunication is equipped with a plurality of with cutter guide bar distributes and the outside slant gas vent of opening for central circumference, slant gas vent left side intercommunication is equipped with the chamber of admitting air that outwards extends to the external world.

7. The precision pipeline inner wall high-precision grinding equipment as claimed in claim 6, wherein: and the scale numerical value on the cutter adjusting disc represents the diameter of the cutter forming circle at the moment.

8. The precision pipeline inner wall high-precision grinding equipment as claimed in claim 1, wherein: the pipeline clamping mechanism also comprises four fixed roller seats arranged in the fixed roller rotating seat, four fixed roller seat cavities which are circumferentially arranged by taking the cutter guide rod as a center and have inward openings are arranged in the guide rod fixing seat, a pair of sliding pairs is formed between the fixed roller seat and the fixed roller seat cavity, a fixed roller shaft which extends inwards to the outside is fixed in the fixed roller seat, the workpiece fixing roller is fixed at the tail end of the inner side of the fixing roller shaft, a driven gear cavity is arranged at the inner side of the fixing roller seat, the driven gear cavity is close to and is close to in fixed roller seat cavity side end wall normal running fit to be close to fixed roller seat cavity side direction extends and runs through fixed roller seat cavity extremely the fixed roller seat cavity outer end wall is inside to be kept away from fixed roller seat cavity side direction extends to the roller seat lead screw in the driven gear cavity, the roller seat lead screw is kept away from fixed roller seat cavity side end is fixed with roller seat driven gear.

9. The precision pipeline inner wall high-precision grinding equipment as claimed in claim 8, wherein: upside fixed roller seat chamber upside is equipped with the worm wheel, upside the roller seat lead screw upwards extends to in the worm wheel, the roller seat lead screw with screw-thread fit connects between the fixed roller seat, the meshing of roller seat driven gear outside have with the initiative ring gear that fixed roller rotating seat normal running fit connects, the upside the terminal roller seat adjustment worm wheel that is fixed with of roller seat lead screw upside, the interior normal running fit of worm wheel extends to outward adjustment worm shaft in the worm wheel, adjustment worm shaft right side end be fixed with the roller seat adjustment worm of roller seat adjustment worm wheel meshing.

Technical Field

The invention relates to the technical field related to pipeline polishing, in particular to high-precision polishing equipment for an inner wall of a precise pipeline.

Background

Pipeline mainly is applied to fluidic transport, the smoothness of pipeline inner wall is influencing the energy loss when fluid transport, therefore the processing of polishing of pipeline inner wall is the more important link of pipeline production, thereby present pipeline inner wall equipment of polishing mainly utilizes high-speed rotatory cutter of polishing to polish along the straight line to the pipeline inner wall, when polishing longer pipeline, the cutter can be because of the skew pipeline axis of gravity of self, thereby influence the precision of polishing, the inconvenient clearance of piece that produces simultaneously at the in-process of polishing, make partial piece attach to on the cutter, further reduce the precision of polishing.

Disclosure of Invention

The invention aims to provide high-precision polishing equipment for the inner wall of a precise pipeline, which is used for overcoming the defects in the prior art.

The high-precision polishing equipment for the inner wall of the precision pipeline comprises a workbench, wherein two clamping seats arranged in a left-right mirror image mode are arranged on the upper side of the workbench, a tool rest moving mechanism is arranged in each clamping seat, and a pipeline clamping mechanism is further arranged in each clamping seat;

the tool rest moving mechanism comprises a guide rod fixing seat which forms a pair of sliding pairs with the clamping seat on the left side, a tool guide rod which forms a pair of sliding pairs with the clamping seat on the right side is fixed on the right end face of the guide rod fixing seat, the tool guide rod is in sliding fit with the tool fixing seat, and the tool rest moving mechanism is used for moving a tool;

the pipeline clamping mechanism comprises a fixed roller rotating seat which is annularly arranged by taking the guide rod fixing seat as a center and forms a pair of revolute pairs with the clamping seat, four workpiece fixing rollers which are circumferentially distributed by taking the guide rod fixing seat as a center are arranged in the fixed roller rotating seat, and the pipeline clamping mechanism is used for clamping a pipeline.

According to the technical scheme, an opening upward clamping seat sliding cavity is formed in the workbench, a clamping seat screw rod which extends rightwards and penetrates through the clamping seat sliding cavity to the outside is arranged on the left end wall of the clamping seat sliding cavity in a rotating fit mode, a pair of sliding pairs is formed between the clamping seat and the clamping seat sliding cavity on the right side, and the clamping seat screw rod is in threaded fit connection with the clamping seat screw rod.

A further technical scheme is that a ring cavity is arranged outside the fixed roller rotating seat, the guide rod fixing seat is arranged in a central ring shape, the left side of the ring cavity is provided with a rotating motor which is positioned on the left side and is fixedly connected with the fixed roller rotating seat, the right end face of the rotating motor is fixedly provided with a rotating motor shaft which extends to the right side into the ring cavity, the left side of the ring cavity is fixedly provided with an annular rack which is positioned in the ring cavity and is annularly arranged by taking the guide rod fixing seat as the center, the right end of the rotating motor shaft is fixedly provided with a rotating straight gear meshed with the annular rack, a bayonet lock cavity is arranged in the guide rod fixing seat, a bayonet lock sliding cavity with an upward opening is arranged in the clamping seat on the left side, a magnetic bayonet lock corresponding to the bayonet lock cavity is in the bayonet lock sliding cavity in a sliding fit manner, and a bayonet lock electromagnet is fixed on the lower end wall of the bayonet lock sliding cavity, a bayonet spring is fixed between the bayonet electromagnet and the magnetic bayonet.

According to a further technical scheme, the tool rest moving mechanism comprises a motor shaft arranged in the guide rod fixing seat, a tool holder screw rod cavity located on the right side of the motor shaft is arranged in the tool guide rod, a tool holder screw rod shaft extending rightwards to penetrate through the tool holder screw rod cavity to the right end wall of the tool holder screw rod cavity is fixed on the right end face of the motor shaft, and a tool holder screw rod located in the tool holder screw rod cavity is fixed on the tool holder screw rod shaft.

In a further technical scheme, the cutter fixing seat is in threaded fit connection with the cutter seat screw rod, a bevel gear transmission cavity which is annularly arranged by taking the cutter guide rod as a center is arranged in the cutter fixing seat, six cutter sliding cavities which are circumferentially distributed by taking the cutter guide rod as a center and have outward openings are arranged on the outer side of the bevel gear transmission cavity, an annular gear which is annularly arranged by taking the cutter guide rod as a center and extends into the bevel gear transmission cavity leftwards is rotationally matched with the right end wall of the bevel gear transmission cavity, an annular bevel gear which is positioned in the bevel gear transmission cavity is fixed on the left end face of the annular gear, a cutter screw rod which extends outwards into the cutter sliding cavity and extends inwards into the bevel gear transmission cavity is rotationally matched with the outer side wall of the bevel gear transmission cavity, and a cutter which is in sliding fit with the cutter sliding cavity is connected with the outer end of the cutter screw rod in a threaded fit manner, and a driven bevel gear meshed with the annular bevel gear is fixed at the tail end of the inner side of the cutter screw rod.

Further technical scheme, ring gear outside intercommunication is provided with the adjusting gear chamber, cutter fixing base right-hand member in-plane normal running fit has the cutter adjustment dish, cutter adjustment dish left end face is fixed with and extends to a left side adjusting disk center pin in the adjusting gear chamber, adjusting disk center pin left side end be fixed with the outer disc meshing's of ring gear cutter adjustment gear, be equipped with in the cutter fixing base with the annular chamber of ventilating that the cutter guide bar set up for central annular, the annular ventilates the chamber outside intercommunication be equipped with a plurality of with the cutter guide bar distributes and the outside slant gas vent of opening as central circumference, slant gas vent left side intercommunication is equipped with the chamber of admitting air of outside extension to the external world.

According to a further technical scheme, the scale numerical value on the cutter adjusting disc represents the diameter of the cutter forming circle at the moment.

In a further technical scheme, the pipeline clamping mechanism also comprises four fixed roller seats arranged in the fixed roller rotating seats, four fixed roller seat cavities which are circumferentially arranged by taking the cutter guide rod as a center and have inward openings are arranged in the guide rod fixing seat, a pair of sliding pairs is formed between the fixed roller seat and the fixed roller seat cavity, a fixed roller shaft which extends inwards to the outside is fixed in the fixed roller seat, the workpiece fixing roller is fixed at the tail end of the inner side of the fixing roller shaft, a driven gear cavity is arranged at the inner side of the fixing roller seat, the driven gear cavity is close to and is close to in fixed roller seat cavity side end wall normal running fit to be close to fixed roller seat cavity side direction extends and runs through fixed roller seat cavity extremely the fixed roller seat cavity outer end wall is inside to be kept away from fixed roller seat cavity side direction extends to the roller seat lead screw in the driven gear cavity, the roller seat lead screw is kept away from fixed roller seat cavity side end is fixed with roller seat driven gear.

Further technical scheme, upside fixed roller seat chamber upside is equipped with the worm wheel, upside the roller seat lead screw upwards extends to in the worm wheel, the roller seat lead screw with screw-thread fit connects between the fixed roller seat, the meshing of roller seat driven gear outside have with the initiative ring gear that fixed roller rotates seat normal running fit and connects, upside the end of roller seat lead screw upside is fixed with roller seat adjustment worm wheel, the interior normal running fit of worm wheel is to extending outward adjustment worm shaft in the worm wheel, adjustment worm shaft right side end be fixed with the roller seat adjustment worm wheel meshed's roller seat adjustment worm.

The invention has the beneficial effects that: the pipeline clamping mechanism is utilized to drive the pipeline to rotate, and the pipeline is abutted against the prop in a self-rotating mode to achieve the purpose of polishing, so that when a longer pipeline is polished, the stable feeding path of the cutter can be ensured, the polishing precision is ensured, meanwhile, the inclined exhaust port arranged on the cutter fixing seat can timely clean the chips during polishing, the chips are prevented from influencing the polishing of the cutter, and the polishing precision is further increased.

Drawings

FIG. 1 is a schematic view of the overall appearance of a high-precision polishing device for the inner wall of a precision pipeline according to the present invention;

FIG. 2 is a schematic view of the internal structure of a high-precision polishing device for the inner wall of a precision pipeline according to the present invention;

FIG. 3 is a schematic view of A-A of FIG. 2 in accordance with the present invention;

FIG. 4 is an enlarged, fragmentary, schematic view at B of FIG. 2 of the present invention;

FIG. 5 is an enlarged, fragmentary, schematic view at C of FIG. 2 of the present invention;

FIG. 6 is a schematic view of D-D of FIG. 4 in accordance with the present invention;

FIG. 7 is a schematic representation of E-E of FIG. 5 in accordance with the present invention;

fig. 8 is an enlarged partial schematic view at F of fig. 2 of the present invention.

Detailed Description

For purposes of making the objects and advantages of the present invention more apparent, the following detailed description of the present invention will be taken in conjunction with the examples, it being understood that the following text is intended to describe only one precise pipe inner wall high precision grinding apparatus or several specific embodiments of the present invention, and is not intended to strictly limit the scope of the invention as specifically claimed, as used herein, the terms up, down, left and right are not limited to their strict geometric definitions, but include tolerances for machining or human error rationality and inconsistency, the specific features of which are detailed below:

referring to fig. 1-8, the high-precision polishing equipment for the inner wall of the precision pipeline according to the embodiment of the invention comprises a workbench 10, wherein two clamping seats 20 arranged in a left-right mirror image mode are arranged on the upper side of the workbench 10, a tool rest moving mechanism is arranged in each clamping seat 20, and a pipeline clamping mechanism is further arranged in each clamping seat 20;

the tool rest moving mechanism comprises a guide rod fixing seat 40 forming a pair of sliding pairs with the clamping seat 20 on the left side, a tool guide rod 43 forming a pair of sliding pairs with the clamping seat 20 on the right side is fixed on the right end face of the guide rod fixing seat 40, a tool fixing seat 60 is matched on the tool guide rod 43 in a sliding manner, and the tool rest moving mechanism is used for moving a tool;

the pipeline clamping mechanism comprises a fixed roller rotating seat 30 which is annularly arranged by taking the guide rod fixing seat 40 as a center and forms a pair of revolute pairs with the clamping seat 20, four workpiece fixing rollers 31 which are circumferentially distributed by taking the guide rod fixing seat 40 as the center are arranged in the fixed roller rotating seat 30, and the pipeline clamping mechanism is used for clamping a pipeline.

Beneficially, an opening upward clamping seat sliding cavity 11 is formed in the workbench 10, a clamping seat screw rod 12 which extends through the clamping seat sliding cavity 11 to the outside is rotationally matched with the left end wall of the clamping seat sliding cavity 11, and a pair of sliding pairs is formed between the clamping seat 20 on the right side and the clamping seat sliding cavity 11 and is in threaded fit connection with the clamping seat screw rod 12.

Beneficially, an annular cavity 21 is disposed outside the fixed roller rotating base 30, the guide rod fixing base 40 is arranged in a central annular manner, the left side of the annular cavity 21 is provided with a rotating motor 50 which is located on the left side and fixedly connected with the upper side of the fixed roller rotating base 30 and the clamping base 20, the right end face of the rotating motor 50 is fixed with a rotating motor shaft 52 which extends rightwards into the annular cavity 21, the outer circular face of the fixed roller rotating base 30 on the left side is fixed with an annular rack 53 which is located in the annular cavity 21 and is arranged in an annular manner with the guide rod fixing base 40 as the center, the right end of the rotating motor shaft 52 is fixed with a rotating straight gear 51 which is meshed with the annular rack 53, a clamping pin cavity 25 is disposed in the guide rod fixing base 40, a clamping pin sliding cavity 23 with an upward opening is disposed in the clamping base 20 on the left side, and a magnetic clamping pin 24 corresponding to the clamping pin cavity 25 is slidably fitted in the clamping pin sliding cavity 23, a bayonet electromagnet 22 is fixed on the lower end wall of the bayonet sliding cavity 23, and a bayonet spring 26 is fixed between the bayonet electromagnet 22 and the magnetic bayonet 24.

Advantageously, the tool rest moving mechanism includes a motor shaft 42 disposed in the guide rod fixing seat 40, a tool holder screw cavity 45 disposed in the tool guide rod 43 and located on the right side of the motor shaft 42 is disposed, a tool holder screw shaft 46 extending through the tool holder screw cavity 45 to the right end wall of the tool holder screw cavity 45 is fixed to the right end face of the motor shaft 42, and a tool holder screw 44 located in the tool holder screw cavity 45 is fixed to the tool holder screw shaft 46.

Beneficially, the tool holder 60 is in threaded fit connection with the tool holder screw 44, a bevel gear transmission cavity 610 annularly arranged with the tool guide rod 43 as a center is arranged in the tool holder 60, six tool sliding cavities 613 circumferentially distributed with the tool guide rod 43 as a center and having outward openings are arranged outside the bevel gear transmission cavity 610, a ring gear 64 annularly arranged with the tool guide rod 43 as a center and extending leftwards into the bevel gear transmission cavity 610 is rotationally fitted in the right end wall of the bevel gear transmission cavity 610, a ring bevel gear 65 located in the bevel gear transmission cavity 610 is fixed on the left end face of the ring gear 64, a tool screw 67 extending outwards into the tool sliding cavity 613 and extending inwards into the bevel gear transmission cavity 610 is rotationally fitted in the outer side wall of the bevel gear transmission cavity 610, and a tool 66 slidably fitted in the tool sliding cavity 613 is connected to the outer end of the tool screw 67 in threaded fit connection And a driven bevel gear 69 meshed with the annular bevel gear 65 is fixed at the tail end of the inner side of the cutter screw rod 67.

Beneficially, an adjusting gear cavity 614 is arranged outside the ring gear 64 in a communicating manner, a tool adjusting disc 62 is rotatably fitted in the right end face of the tool fixing seat 60, a central adjusting disc shaft 61 extending leftwards into the adjusting gear cavity 614 is fixed to the left end face of the tool adjusting disc 62, a tool adjusting gear 63 engaged with the outer circumferential face of the ring gear 64 is fixed to the left end of the central adjusting disc shaft 61, an annular ventilation cavity 612 annularly arranged around the tool guiding rod 43 is arranged in the tool fixing seat 60, a plurality of oblique exhaust ports 611 circumferentially distributed around the tool guiding rod 43 and having outward openings are arranged outside the annular ventilation cavity 612 in a communicating manner, and an air inlet cavity 68 extending outwards is arranged on the left side of the oblique exhaust ports 611 in a communicating manner.

Advantageously, the tool setting disk 62 is provided with a scale value representing the diameter of the tool making up the circle at that time.

Beneficially, the pipe clamping mechanism further includes four fixed roller seats 34 disposed in the fixed roller rotating seat 30, four fixed roller seat cavities 35 circumferentially disposed with the cutter guide rod 43 as a center and having inward openings are disposed in the guide rod fixing seat 40, a pair of sliding pairs is formed between the fixed roller seats 34 and the fixed roller seat cavities 35, fixed roller shafts 32 extending inward to the outside are fixed in the fixed roller seats 34, the workpiece fixed rollers 31 are fixed at the inner ends of the fixed roller shafts 32, driven gear cavities 39 are disposed on the inner sides of the fixed roller seats 34, the driven gear cavities 39 are rotatably fitted near the side end walls of the fixed roller seat cavities 35 and extend through the fixed roller seat cavities 35 to the outer end walls of the fixed roller seat cavities 35 in the direction close to the side of the fixed roller seat cavities 35 and extend to the driven gear cavities 39 in the direction far from the side of the fixed roller seat cavities 35, and a roller seat driven gear 37 is fixed at the tail end of the roller seat screw rod 36 far away from the fixed roller seat cavity 35.

Beneficially, the upside of the fixed roller seat cavity 35 on the upside is provided with a worm wheel 33, the upside of the roller seat screw rod 36 extends upwards into the worm wheel 33, the roller seat screw rod 36 is in threaded fit connection with the fixed roller seat 34, the outer side of the roller seat driven gear 37 is engaged with a driving ring gear 38 in rotational fit connection with the fixed roller rotating seat 30, the end of the upside of the roller seat screw rod 36 on the upside is fixed with a roller seat adjusting worm wheel 312, the inner end of the worm wheel 33 is in rotational fit with an adjusting worm shaft 311 extending outwards into the worm wheel 33, and the end of the right side of the adjusting worm shaft 311 is fixed with a roller seat adjusting worm 310 engaged with the roller seat adjusting worm wheel 312.

Insert cutter guide bar 43 in the tight seat 20 of right side clamp, cutter fixing base 60 is close to the tight seat 40 right-hand member face of guide bar fixing base this moment, the pipeline that will treat to polish is placed between the tight seat 20 of left and right sides clamp, pass guide bar fixing base 40 in the tight seat 20 of left side clamp, aim at magnetic bayonet lock 24 bayonet lock slip chamber 23, start bayonet lock electro-magnet 22, make bayonet lock electro-magnet 22 must electrically repel magnetic bayonet lock 24, and then make magnetic bayonet lock 24 overcome bayonet lock spring 26's elasticity upward movement to the bayonet lock intracavity 25 in, thereby chucking guide bar fixing base 40, make it unable free movement.

At this time, the screw rod 12 of the clamping seat is rotated, so that the right clamping seat 20 moves leftwards, the left workpiece fixing roller 31 and the right workpiece fixing roller 31 can clamp the pipeline, and the tail ends of the left side and the right side of the pipeline are respectively arranged between the four workpiece fixing rollers 31 on the left side and the right side.

Rotate adjustment worm axle 311 through the allen key, then adjust worm axle 311 and drive roller seat adjustment worm 310 and rotate, thereby make roller seat adjustment worm wheel 312 rotate, and then drive upside roller seat lead screw 36 and rotate, thereby make upside roller seat driven gear 37 rotate, and then drive initiative ring gear 38 and rotate, thereby make all the other three roller seat driven gear 37 rotate simultaneously, then four roller seat lead screws 36 rotate simultaneously, and then make four fixed roller seats 34 inwards press from both sides tight pipeline, thereby make pipeline center pin and cutter guide bar 43 center pin collineation.

Cutter fixing base 60 is located the pipeline left side this moment, rotates cutter adjustment disc 62 to make adjustment disc center pin 61 rotate, and then drive cutter adjustment gear 63 and rotate, thereby make ring gear 64 rotate, thereby drive ring gear 64 and rotate, and then make ring gear 65 rotate, and then drive driven bevel gear 69 and rotate, make cutter lead screw 67 rotate, thereby it is outside to drive cutter 66, thereby the diameter of the circle that makes the cutter group become is unanimous with the pipeline internal diameter.

Then, the rotating motor 50 is started to drive the rotating motor shaft 52 to rotate, so that the rotating spur gear 51 rotates, and the annular rack 53 is driven to rotate, so that the left fixed roller rotating seat 30 rotates, and the left workpiece fixed roller 31 rotates around the guide rod fixing seat 40, and the pipeline is driven to rotate at a high speed.

At this time, the motor shaft 42 is started, so that the motor shaft 42 drives the cutter holder screw shaft 46 to rotate, the cutter holder screw 44 is rotated, the cutter holder 60 is driven to move rightwards, and the inner wall of the pipeline is polished by abutting the pipeline rotating at a high speed with a cutter.

In the process that the cutter fixing seat 60 moves rightwards, the air inlet cavity 68 connected with the air pump ventilates the annular ventilation cavity 612, so that the inclined air outlet 611 blows outwards, chips generated by polishing blow rightwards, and the chips are prevented from influencing polishing precision.

After the tool holder 60 has moved rightwards completely through the pipe, a grinding operation is completed, the rotary motor 50 and the motor shaft 42 are turned off, so that the pipe stops rotating while the tool holder 60 stops moving, and the tool adjusting disk 62 is rotated again to adjust the tool extension distance.

And then the rotating motor 50 is restarted, and simultaneously the motor shaft 42 is reversely started, so that the cutter fixing seat 60 moves leftwards, the tube wall is secondarily polished, and the steps are repeated until the polishing operation is finished.

The invention has the beneficial effects that: the pipeline clamping mechanism is utilized to drive the pipeline to rotate, and the pipeline is abutted against the prop in a self-rotating mode to achieve the purpose of polishing, so that when a longer pipeline is polished, the stable feeding path of the cutter can be ensured, the polishing precision is ensured, meanwhile, the inclined exhaust port arranged on the cutter fixing seat can timely clean the chips during polishing, the chips are prevented from influencing the polishing of the cutter, and the polishing precision is further increased.

It will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. All falling within the scope of protection of the present invention. The protection scheme of the invention is subject to the appended claims.