阅读说明：本技术 一种铸造铝合金材质的抛光装置 (Burnishing device of casting aluminum alloy material ) 是由 燕克俭 于 2021-10-13 设计创作，主要内容包括：本发明公开了一种铸造铝合金材质的抛光装置,包括固定组件,其包括固定盘、与所述固定盘一端面连接的固定环,所述固定环内部设置有沿径向延伸的滑动槽,所述滑动槽向圆心处贯穿形成第一通孔,所述滑动槽内设置有活塞盘,所述活塞盘连接有固定销,所述固定销穿过所述第一通孔；抛光组件,包括与所述固定盘同轴设置的抛光筒,所述抛光筒由电机驱动旋转；对管材进行打磨抛光,有效地代替传统的人工手动操作,极大地提高了管材在打磨抛光时的安全系数、精度和生产效率,减少人力成本和出错率,降低生产成本,同时还能避免工人在打磨抛光时发生的危险问题。(The invention discloses a polishing device for a cast aluminum alloy material, which comprises a fixing assembly, a polishing assembly and a polishing assembly, wherein the fixing assembly comprises a fixing disc and a fixing ring connected with one end surface of the fixing disc, a sliding groove extending along the radial direction is arranged in the fixing ring, the sliding groove penetrates towards the circle center to form a first through hole, a piston disc is arranged in the sliding groove, the piston disc is connected with a fixing pin, and the fixing pin penetrates through the first through hole; the polishing component comprises a polishing barrel which is coaxially arranged with the fixed disc, and the polishing barrel is driven by a motor to rotate; the pipe polishing machine has the advantages that the pipe polishing machine can polish and polish pipes effectively, replaces traditional manual operation, greatly improves safety coefficient, precision and production efficiency of the pipes during polishing, reduces labor cost and error rate, reduces production cost, and can avoid the danger problem of workers during polishing.)

1. The utility model provides a burnishing device of casting aluminum alloy material which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the fixing assembly (100) comprises a fixing disc (101) and a fixing ring (102) connected with one end face of the fixing disc (101), a sliding groove (102 a) extending along the radial direction is formed in the fixing ring (102), the sliding groove (102 a) penetrates towards the circle center to form a first through hole (102 b), a piston disc (103) is arranged in the sliding groove (102 a), the piston disc (103) is connected with a fixing pin (103 a), and the fixing pin (103 a) penetrates through the first through hole (102 b);

the polishing assembly (200) comprises a polishing barrel (201) which is coaxially arranged with the fixed disc (101), and the polishing barrel (201) is driven to rotate by a motor; a sliding hole (201 a) is formed in the side face of the polishing barrel (201), a connecting rod (202) is arranged in the sliding hole (201 a), a friction block (203) is connected to one end, located in the polishing barrel (201), of the connecting rod (202), a first spring (204) is arranged between the friction block (203) and the inner wall of the polishing barrel (201), and the connecting rod (202) is sleeved with the first spring (204); piston disc (103) will sliding tray (102 a) are distinguished into first space (A) and second space (B), fixed pin (103 a) are located first space (A), the central point that a terminal surface of solid fixed ring (102) was kept away from in fixed disk (101) puts and is provided with mounting hole (101 a), be provided with first passageway (101B) that run through between mounting hole (101 a) side and second space (B), be provided with second passageway (101 c) between mounting hole (101 a) bottom and first space (A), sliding tray (102 a), first passageway (101B), second passageway (101 c) all are provided with 3.

2. A polishing apparatus for a cast aluminum alloy material as set forth in claim 1, wherein: the opening of the mounting hole (101 a) extends towards the direction of the circle center to form a first limiting boss (101 d), a valve block (104) is arranged in the mounting hole (101 a), and a second spring (105) is arranged at the bottoms of the valve block (104) and the mounting hole (101 a).

3. A polishing apparatus for a cast aluminum alloy material as set forth in claim 2, wherein: an extension pipe (106) connected with the second passage (101 c) is arranged at the bottom of the mounting hole (101 a), a second through hole (104 a) is formed in the valve block (104), the extension pipe (106) penetrates through the second through hole (104 a), the extension pipe (106) is a hollow pipe, one end, far away from the second passage (101 c), of the extension pipe (106) extends towards the direction of the circle center to form a second limiting boss (106 a), a third limiting boss (106 b) is arranged in the extension pipe (106), a ball body (106 c) is arranged between the second limiting boss (106 a) and the third limiting boss (106 b), and a third spring (106 d) is arranged between the ball body (106 c) and the second limiting boss (106 a); a fourth spring (103 b) is arranged between the piston disc (103) and the first space (A); the end face of the first space (A) is connected with the end face of the second space (B) through a third passage (101 e), a spherical groove (101 f) is arranged in the third passage (101 e), a ball valve (107) is arranged in the spherical groove (101 f), a fifth through hole (107 a) is formed in the ball valve (107), a rotary hole (102 c) is formed in the spherical groove (101 f) in the direction of the end face of the fixing ring (102), an adjusting pin (107B) is connected to the surface of the ball valve (107), the adjusting pin (107B) penetrates through the rotary hole (102 c) and is connected with a driven gear (108), a driving gear (109) is arranged outside the fixing ring (102), and the driving gear (109) is meshed with the driven gear (108).

4. A polishing apparatus for a cast aluminum alloy material as set forth in claim 3, wherein: the fixed disk (101) is kept away from a terminal surface of solid fixed ring (102) and is connected with an eccentric section of thick bamboo (300), mounting hole (101 a) are located an eccentric section of thick bamboo (300), the centre of a circle of an eccentric section of thick bamboo (300) does not coincide with the centre of a circle of mounting hole (101 a), an eccentric section of thick bamboo (300) centre of a circle department is provided with pivot (301), pivot (301) are rotated and are connected with swing piece (302), swing piece (302) include sleeve (302 a), sleeve (302 a) one side is connected with swing board (302 b), the opposite side is connected with connecting plate (302 c), sleeve (302 a) cover is established on pivot (301), sleeve (302 a) height is the half of pivot (301), swing board (302 b) height and eccentric section of thick bamboo (300) highly uniform, the cover is equipped with two swing pieces (302) in pivot (301), mounting hole (101 a) are located between two swing boards (302 b), the eccentric cylinder (300) is further provided with a sealing cover (303), and a third space (C) is formed between the two swinging plates (302 b) and the sealing cover (303).

5. A cast aluminum alloy polishing apparatus as set forth in claim 4, wherein: a cylindrical groove (302 d) extending along the radial direction is formed in the connecting plate (302 c), the cylindrical groove (302 d) penetrates through two side faces of the connecting plate (302 c), a connecting ball (304) is arranged in the cylindrical groove (302 d), a limiting groove (302 e) is formed in the side face of the cylindrical groove (302 d), a limiting rod (304 a) is arranged on the connecting ball (304), and the limiting rod (304 a) is embedded into the limiting groove (302 e); the connecting ball (304) is provided with a fourth through hole (304 b), the axis of the fourth through hole (304 b) is perpendicular to the axis of the limiting rod (304 a), a rotating hole (305) is formed in the eccentric cylinder (300), a rotating shaft (306) is arranged in the rotating hole (305), and the rotating shaft (306) penetrates through the fourth through hole (304 b).

6. A cast aluminum alloy polishing apparatus as set forth in claim 5, wherein: the rotating shaft (306) is provided with two symmetrical annular grooves (306 a), each annular groove (306 a) comprises a first spiral groove (306 b) and a second spiral groove (306 c), each of the first spiral groove (306 b) and the second spiral groove (306 c) is a half circle, the rotating directions of the first spiral groove (306 b) and the second spiral groove (306 c) are opposite, the end portions of the first spiral groove (306 b) and the second spiral groove (306 c) are communicated, a protrusion (304 c) is arranged in each of the four through holes (304 b), and the protrusion (304 c) is embedded into the annular groove (306 a).

7. A polishing apparatus for a cast aluminum alloy material as recited in claim 6, wherein: the rotating shaft (306) is driven by a motor.

Technical Field

The invention relates to the field of metal polishing, in particular to a polishing device for a cast aluminum alloy material.

Background

At present, the polishing and grinding processing technology of metal tubular product, what mostly still adopted is traditional manpower fixed method, however this method is because the polishing whole journey of tubular product is by the manual fixed of manpower, make this type of polishing and grinding technology have certain potential safety hazard, the manual fixed stability of personnel is relatively poor in addition, slide easily at tubular product polishing's in-process, simultaneously because tubular product size problem, the wall thickness is thinner, the polishing dynamics is different from person to person, the edge collapsing problem appears during polishing and grinding easily, the effect of polishing is poor and non-uniform, influence tubular product polishing's quality and production efficiency, and the environment of workman's production is abominable, can't satisfy the production and processing demand.

Disclosure of Invention

In order to solve the technical problems, the invention provides the following technical scheme: the polishing device for the cast aluminum alloy material comprises a fixing assembly, a polishing assembly and a polishing assembly, wherein the fixing assembly comprises a fixing disc and a fixing ring connected with one end face of the fixing disc, a sliding groove extending along the radial direction is formed in the fixing ring, the sliding groove penetrates through the center of a circle to form a first through hole, a piston disc is arranged in the sliding groove, the piston disc is connected with a fixing pin, and the fixing pin penetrates through the first through hole;

and the polishing component comprises a polishing barrel which is coaxial with the fixed disk, and the polishing barrel is driven to rotate by a motor.

As a preferable aspect of the polishing apparatus for the cast aluminum alloy material of the present invention, wherein: the polishing device is characterized in that a sliding hole is formed in the side face of the polishing barrel, a connecting rod is arranged in the sliding hole, one end, located in the polishing barrel, of the connecting rod is connected with a friction block, a first spring is arranged between the friction block and the inner wall of the polishing barrel, and the first spring is sleeved on the connecting rod.

As a preferable aspect of the polishing apparatus for the cast aluminum alloy material of the present invention, wherein: the piston disc will the sliding tray distinguishes into first space and second space, the fixed pin is located first space, the central point that solid fixed ring's a terminal surface was kept away from to the fixed disk puts and is provided with the mounting hole, be provided with the first passageway that runs through between mounting hole side and the second space, be provided with the second passageway between mounting hole bottom and the first space, sliding tray, first passageway, second passageway all are provided with 3.

As a preferable aspect of the polishing apparatus for the cast aluminum alloy material of the present invention, wherein: the valve is characterized in that the opening of the mounting hole extends towards the direction of the circle center to form a first limiting boss, a valve block is arranged in the mounting hole, and a second spring is arranged at the bottom of the valve block and the bottom of the mounting hole.

As a preferable aspect of the polishing apparatus for the cast aluminum alloy material of the present invention, wherein: the bottom of the mounting hole is provided with an extension pipe connected with the second passage, the valve block is provided with a second through hole, the extension pipe penetrates through the second through hole, the extension pipe is a hollow pipe, one end, far away from the second passage, of the extension pipe extends to the circle center direction to form a second limiting boss, a third limiting boss is arranged in the extension pipe, a ball body is arranged between the second limiting boss and the third limiting boss, and a third spring is arranged between the ball body and the second limiting boss.

Be connected through the third passageway between the terminal surface in first space and the terminal surface in second space, be provided with spherical groove in the third passageway, be provided with the ball valve in the spherical groove, the ball valve is provided with the fifth through-hole, spherical groove is provided with the commentaries on classics hole to solid fixed ring terminal surface direction, ball valve surface is connected with the regulation round pin, and the regulation round pin passes and changes the hole and be connected with driven tooth, gu fixed ring is provided with the action wheel outward, the driving gear meshes with driven tooth.

As a preferable aspect of the polishing apparatus for the cast aluminum alloy material of the present invention, wherein: the utility model discloses a fixed disk, including fixed ring, mounting hole, eccentric section of thick bamboo, sleeve, connecting plate, pivot, swing piece, fixed disk, fixed ring, mounting hole, fixed disk, fixed ring, mounting hole, eccentric section of thick bamboo, the centre of a circle of eccentric section of thick bamboo and the centre of a circle of mounting hole do not coincide, eccentric section of thick bamboo centre of a circle department is provided with the pivot, the pivot is rotated and is connected with swing piece, swing piece includes the sleeve, sleeve one side is connected with swing board, and the opposite side is connected with the connecting plate, the sleeve cover is established in the pivot, the sleeve height is the half of pivot, swing board height and eccentric section of thick bamboo highly uniform, the cover is equipped with two swing pieces in the pivot, the mounting hole is located between two swing boards, eccentric section of thick bamboo still is provided with sealed lid, two form the third space between swing board and the sealed lid.

As a preferable aspect of the polishing apparatus for the cast aluminum alloy material of the present invention, wherein: the connecting plate is provided with a cylindrical groove extending along the radial direction, the cylindrical groove penetrates through two side faces of the connecting plate, a connecting ball is arranged in the cylindrical groove, a limiting groove is arranged on the side face of the cylindrical groove, a limiting rod is arranged on the connecting ball, and the limiting rod is embedded in the limiting groove; the connecting ball is provided with a fourth through hole, the axis of the fourth through hole is perpendicular to the axis of the limiting rod, a rotating hole is formed in the eccentric cylinder, a rotating shaft is arranged in the rotating hole, and the rotating shaft penetrates through the fourth through hole.

As a preferable aspect of the polishing apparatus for the cast aluminum alloy material of the present invention, wherein: the spiral groove is characterized in that two symmetrical annular grooves are formed in the rotating shaft and comprise a first spiral groove and a second spiral groove, the first spiral groove and the second spiral groove are half circles, the rotating directions of the first spiral groove and the second spiral groove are opposite, the end portions of the first spiral groove and the second spiral groove are communicated, protrusions are arranged in the four-way holes, and the protrusions are embedded into the annular grooves.

As a preferable aspect of the polishing apparatus for the cast aluminum alloy material of the present invention, wherein: the rotating shaft is driven by a motor.

The invention has the beneficial effects that: the pipe polishing machine has the advantages that the pipe polishing machine can polish and polish pipes effectively, replaces traditional manual operation, greatly improves safety coefficient, precision and production efficiency of the pipes during polishing, reduces labor cost and error rate, reduces production cost, and can avoid the danger problem of workers during polishing.

Drawings

FIG. 1 is a schematic structural diagram of a polishing apparatus for cast aluminum alloy according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a polishing assembly in a polishing apparatus made of a cast aluminum alloy according to an embodiment of the invention;

FIG. 3 is a schematic structural diagram of a fixing member of a polishing apparatus for cast aluminum alloy according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view illustrating a fixing member of a polishing apparatus for cast aluminum alloy according to an embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 3 of a polishing apparatus for a cast aluminum alloy according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional, away-structure view of a polishing apparatus made of a cast aluminum alloy according to an embodiment of the present invention;

FIG. 7 is an enlarged partial schematic view of the polishing apparatus of cast aluminum alloy according to an embodiment of the present invention shown in FIG. 6;

fig. 8 is a schematic structural view of an eccentric cylinder in a polishing apparatus made of cast aluminum alloy according to an embodiment of the present invention;

fig. 9 is a schematic cross-sectional view illustrating an eccentric cylinder of a polishing apparatus made of a cast aluminum alloy according to an embodiment of the present invention;

FIG. 10 is a schematic structural view of an oscillating member in the polishing apparatus for cast aluminum alloy according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a rotating shaft in a polishing apparatus made of a cast aluminum alloy according to an embodiment of the present invention.

In the figure: a fixing member 100; a fixed tray 101; mounting holes 101 a; a first passage 101 b; a second passage 101 c; a first limit boss 101 d; a spherical groove 101 f; a fixed ring 102; the slide groove 102 a; a first through hole 102 b; a piston disc 103; a fixing pin 103 a; a fourth spring 103 b; a valve block 104; a second spring 105; an extension tube 106; a second limit boss 106 a; a sphere 106 c; a third spring 106 d; a ball valve 107; a fifth through hole 107 a; the adjustment pin 107 b; a driven gear 108; a drive gear 109; a polishing assembly 200; a polishing cartridge 201; the slide hole 201 a; a connecting rod 202; a friction block 203; a first spring 204; a first space A; a second space B; an eccentric cylinder 300; a rotating shaft 301; a swinging member 302; a sleeve 302 a; a swing plate 302 b; a connecting plate 302 c; the cylindrical groove 302 d; a stopper groove 302 e; a seal cover 303; a connecting ball 304; a fourth via hole 304 b; a projection 304 c; the rotation hole 305; a rotating shaft 306; an annular groove 306 a; a first helical groove 306 b; a second helical groove 306 c.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1 to 11, the embodiment provides a polishing apparatus made of a cast aluminum alloy material, including a fixing assembly 100, mainly used for fixing an alloy pipe, including a fixing plate 101 and a fixing ring 102 connected to an end surface of the fixing plate 101, where the fixing plate 101 is circular, the fixing ring 102 is provided inside with sliding grooves 102a extending in a radial direction, the sliding grooves 102a are provided with 3 and uniformly distributed, an axis of the sliding groove 102a is located in a radial direction of the fixing ring 102, the sliding groove 102a penetrates through a circle center to form a first through hole 102b, a diameter of the first through hole 102b is smaller than a diameter of the sliding groove 102a, a piston disc 103 is provided in the sliding groove 102a, the piston disc 103 can move in the sliding groove 102a, the piston disc 103 is connected with a fixing pin 103a, and the fixing pin 103a passes through the first through hole 102 b; the fixing pins 103a are provided with 3 pieces for clamping the alloy pipe. Also included is a polishing assembly 200 comprising a polishing cartridge 201 disposed coaxially with the fixed platter 101, the polishing cartridge 201 being rotated by a motor. The polishing barrel 201 is cylindrical and can rotate, and the fixing mode of the polishing barrel 201 is not described in detail in the conventional manner.

Referring to fig. 2, a sliding hole 201a is formed in the side surface of a polishing barrel 201, a connecting rod 202 is arranged in the sliding hole 201a, the connecting rod 202 can move in the sliding hole 201a, one end, located in the polishing barrel 201, of the connecting rod 202 is connected with a friction block 203, and the friction block 203 is metal solid ointment or grinding stone used in a polishing process.

A first spring 204 is arranged between the friction block 203 and the inner wall of the polishing barrel 201, and the first spring 204 is sleeved on the connecting rod 202. The first spring 204 pushes the friction block 203 to be attached to the surface of the pipe to be polished.

Referring to fig. 4, the piston disc 103 divides the sliding groove 102a into a first space a and a second space B, the size of the first space a and the second space B changes according to the movement of the piston disc 103, wherein the fixing pin 103a is located in the first space a, the fixing disc 101 is provided with a mounting hole 101a at a central position of one end surface thereof away from the fixing ring 102, a first through passage 101B is provided between a side surface of the mounting hole 101a and the second space B, a second through passage 101c is provided between the bottom of the mounting hole 101a and the first space a, 3 sliding grooves 102a, the first through passages 101B, and the second through passages 101c are provided, one ends of the three first through passages 101B are respectively connected to the second space B, the other ends of the three first through passages 101B are respectively connected to the mounting hole 101a, and the ends of the three second through passages 101c are also respectively connected to the mounting hole 101 a.

Referring to fig. 5, a first limiting boss 101d is formed by extending the opening of the mounting hole 101a toward the center of the circle, the inner diameter of the first limiting boss 101d is smaller than the inner diameter of the mounting hole 101a, a valve block 104 is arranged in the mounting hole 101a, the diameter of the valve block 104 is smaller than the inner diameter of the mounting hole 101a and larger than the inner diameter of the limiting boss 101d, and a second spring 105 is arranged at the bottom of the valve block 104 and the bottom of the mounting hole 101a, so that the second spring 105, the valve block 104 and the mounting hole 101a form a one-way valve structure.

Referring to fig. 5, an extension pipe 106 connected to the second passage 101c is disposed at the bottom of the mounting hole 101a, the valve block 104 is provided with a second through hole 104a, the extension pipe 106 passes through the second through hole 104a, the extension pipe 106 is a hollow pipe, one end of the extension pipe 106, which is far away from the second passage 101c, extends toward the center of the circle to form a second limiting boss 106a, a third limiting boss 106b is disposed in the extension pipe 106, the diameters of the second limiting boss 106a and the third limiting boss 106b are the same and smaller than the inner diameter of the extension pipe 106, a sphere 106c is disposed between the second limiting boss 106a and the third limiting boss 106b, and a third spring 106d is disposed between the sphere 106c and the second limiting boss 106 a. The ball 106c has a diameter greater than the inner diameter of the second limit projection 106a and less than the inner diameter of the extension pipe 106, thereby forming a second check valve. Wherein a fourth spring 103b is arranged between the piston disc 103 and the first space a.

It should be noted that the second space B is filled with hydraulic oil, and the first space a has a part of the hydraulic oil therein.

Furthermore, the end surface of the first space a and the end surface of the second space B are connected by a third passage 101e, and the third passage 101e can circulate the oil liquid in the second space B into the first space a; specifically, since the spherical groove 101f is provided in the third passage 101e, the ball valve 107 is provided in the spherical groove 101f, and the ball valve 107 is provided with the fifth through hole 107a, the flow of the oil in the third passage 101e can be shut off or opened by operating the rotational orientation of the ball valve 107. The spherical groove 101f is provided with a rotary hole 102c towards the end face of the fixed ring 102, the surface of the ball valve 107 is connected with an adjusting pin 107b, the adjusting pin 107b passes through the rotary hole 102c and is connected with a driven gear 108, a driving gear 109 is arranged outside the fixed ring 102, and the driving gear 109 is meshed with the driven gear 108. Therefore, the driven gear 108, and thus the third passage 101e, can be controlled by operating the driving gear 109.

Furthermore, an end face of the fixed disk 101, which is far away from the fixed ring 102, is connected with an eccentric cylinder 300, the eccentric cylinder 300 is a cylindrical cylinder, and is eccentrically arranged relative to the fixed disk 101, the mounting hole 101a is located in the eccentric cylinder 300, the center of the eccentric cylinder 300 is not coincident with the center of the mounting hole 101a, the center of the eccentric cylinder 300 is provided with a rotating shaft 301, the rotating shaft 301 is rotatably connected with a swinging piece 302, the swinging piece 302 comprises a sleeve 302a, one side of the sleeve 302a is connected with a swinging plate 302b, the other side of the sleeve 302a is connected with a connecting plate 302c, the sleeve 302a is sleeved on the rotating shaft 301 and can rotate, wherein the height of the sleeve 302a is half of that of the rotating shaft 301, so that the two swinging pieces 302 are arranged to be mutually meshed, the height of the swinging plate 302b is consistent with that of the eccentric cylinder 300, the rotating shaft 301 is sleeved with two swinging pieces 302, the mounting hole 101a is located between the two swinging plates 302b, and the two swinging plates 302b are symmetrically arranged, wherein the symmetry plane is the plane of the axis of the mounting hole 101a and the axis of the eccentric cylinder 300, the eccentric cylinder 300 is further provided with a sealing cover 303, and a third space C is formed between the two swinging plates 302b and the sealing cover 303. The third space C is a sealed space, and the third space C contains hydraulic oil therein.

Furthermore, a cylindrical groove 302d extending in the radial direction is formed in the connecting plate 302c, the cylindrical groove 302d penetrates through two side faces of the connecting plate 302c, namely the diameter of the cylindrical groove 302d is larger than the thickness of the connecting plate 302c, a connecting ball 304 is arranged in the cylindrical groove 302d, the connecting ball 304 is spherical, a limiting groove 302e is formed in the side face of the cylindrical groove 302d, a limiting rod 304a is arranged on the connecting ball 304, the limiting rod 304a is embedded into the limiting groove 302e, and the connecting ball 304 is prevented from rotating due to the matching of the limiting groove 302e and the limiting rod 304 a. The connecting ball 304 is provided with a fourth through hole 304b, the axis of the fourth through hole 304b is perpendicular to the axis of the limiting rod 304a, the eccentric cylinder 300 is provided with two rotating holes 305, the rotating holes 305 are provided with two rotating shafts 306, and the rotating shafts 306 penetrate through the fourth through hole 304 b. The rotation hole 305 is used to support the rotation shaft 306 so that the rotation shaft 306 can only rotate and cannot be axially displaced.

The rotating shaft 306 is provided with two symmetrical annular grooves 306a, namely the annular grooves 306a surround the rotating shaft 306 for one circle, but are not circular, each annular groove 306a comprises a first spiral groove 306b and a second spiral groove 306c, the first spiral groove 306b and the second spiral groove 306c are both half a circle, namely the angle occupied by the first spiral groove 306b and the second spiral groove 306c is 180 degrees, the rotating directions of the first spiral groove 306b and the second spiral groove 306c are opposite, the end parts of the first spiral groove 306b and the second spiral groove 306c are communicated, the connection part is in arc transition, a protrusion 304c is arranged in the fourth through hole 304b, and the protrusion 304c is embedded into the annular groove 306 a; the rotating shaft 306 is driven by a motor.

In this embodiment, when the rotating shaft 306 is driven to rotate, the protrusion 304C moves in the annular groove 306a, because the annular groove 306a is a spiral groove, the connecting ball 304 moves along the axial direction of the rotating shaft 306, that is, the two connecting balls 304 move towards or away from each other, so that the included angle between the two swinging members 302 changes, when the two connecting balls 304 approach each other, the included angle between the two swinging members 302 decreases, the accommodating space of the third space C decreases, when the two connecting balls 304 move away from each other, the included angle between the two swinging members 302 increases, the accommodating space of the third space C increases, in this process, the hydraulic oil in the first space a enters the third space C through the extension pipe 106, and then after the space of the third space C reaches the maximum, the two swinging plates 302B approach each other to decrease the accommodating space of the third space C, and in this process, the hydraulic oil in the third space C is squeezed to enter the second space B through the first passage 101B, then the piston disc 103 is pushed in the second space B to move towards the direction of the circle center, namely, the pipe to be polished is clamped and fastened; after fastening, the polishing barrel 201 is driven by the motor, so that the friction block 203 inside the polishing barrel rubs and polishes the surface of the pipe to be polished, after polishing is completed, the polishing barrel 201 stops rotating, at the moment, the driving gear 109 is stirred to drive the driven gear 108, further, the fifth through hole 107a of the ball valve 107 is communicated with the third passage 101e, at the moment, under the action of the fourth spring 103B, hydraulic oil in the first space A enters the second space B through the third passage 101e, the piston disc 103 and the fixing pin 103a can enter the sliding groove 102a, and the polished pipe can be taken down at the moment.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.