CN112847100A

CN112847100A - Fixing clamp and fixing method for machining

Info

Publication number: CN112847100A
Application number: CN202110026920.0A
Authority: CN
Inventors: 刘治清
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-09
Filing date: 2021-01-09
Publication date: 2021-05-28

Abstract

The invention discloses a fixing clamp and a fixing method for machining, and relates to the technical field of machining; in order to solve the problem of steel pipe fixation; the fixing clamp comprises a processing box, wherein the top of the processing box is fixedly connected with a top plate, the bottom of the top plate is fixedly connected with a grinding assembly and a fixing assembly, the bottom of the processing box is fixedly connected with a polishing assembly, the fixing assembly comprises a pressing block and a hexagonal convex block, one side of the pressing block is tightly attached with a steel pipe, and one end of the pressing block is welded with a push rod; the corner cutting method of the glass curtain wall comprises the following steps: lifting the top plate, fixing the steel pipe, rotating the steel pipe, polishing the steel pipe and collecting the blanking. According to the invention, the steel pipe can be clamped from the inner wall by arranging the fixing component, the handle is utilized to drive the second threaded rod to rotate, the second threaded rod moves upwards to jack the hexagonal convex block, the first sliding block slides downwards along the first sliding groove, the pressing block is pushed outwards, and the inner wall of the steel pipe is clamped.

Description

Fixing clamp and fixing method for machining

Technical Field

The invention relates to the technical field of machining, in particular to a fixing clamp and a fixing method for machining.

Background

At present, the steel pipe is required to be fixed by polishing the surface of the steel pipe, the steel pipe is guaranteed not to shake in the polishing process, and in the fixing process of the steel pipe, a support piece is arranged on the surface of the steel pipe to guarantee the stability of the steel pipe, so that the steel pipe is supported and cannot be polished in the polishing process.

Through search, the patent with the Chinese patent application number of 201811293575.1 discloses a steel tube grinding device, which comprises a workbench, a motor box is fixedly arranged on one side of the upper end of the workbench, a rapid motor is arranged in the motor box, a bearing plate is vertically arranged at the upper end of the workbench, a bearing is arranged between the motor box and the middle part of the bearing plate, two groups of connecting mechanisms are arranged on one side of the bearing plate, a circular plate is fixedly arranged at the tail end of an output shaft of the rapid motor, two groups of connecting mechanisms are arranged between one side of the circular plate and the bearing plate, the other side of the circular plate is provided with a clamping mechanism, a steel pipe standard part is fixed through a clamping mechanism, a plurality of groups of supporting mechanisms are movably arranged between the steel pipe standard part and the upper end of the workbench, the outer side of the steel pipe standard component is also movably provided with a polishing mechanism, and two groups of sliding mechanisms are arranged between the lower end of the polishing mechanism and the upper end of the workbench. The support mechanism in the above patent has the following disadvantages: the supporting mechanism supports the steel pipe, guarantees the stationarity that the steel pipe was polished, but supporting mechanism can carry on spacingly to polishing mechanism, leads to the steel pipe outer wall can not polish comprehensively, has the dead angle of polishing.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a fixing clamp and a fixing method for machining.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a mounting fixture for machining, includes the processing case, the top fixedly connected with roof of processing case, the bottom fixedly connected with subassembly and the fixed subassembly of polishing of roof, the bottom fixedly connected with polishing subassembly of processing case, fixed subassembly is including compressing tightly piece and hexagonal lug, and one side of compressing tightly piece is hugged closely has the steel pipe, and the one end welding of compressing tightly piece has the push rod, and the one end welding of push rod has slider one, and the outer wall sliding connection of slider one has a spacing section of thick bamboo, and the one end welding of a spacing section of thick bamboo has a fixed cylinder, and the bottom welding of fixed cylinder has the locating plate, and spout one has been seted up to the outer wall of hexagonal lug, and spout one and slider one mutually support, and the bottom of hexagonal lug is rotated.

Preferably: the subassembly of polishing is including sliding block and abrasive brick, and the bottom welding of roof has the fixed block, and the quantity of fixed block is two, and the welding has the slide bar between two fixed blocks, and sliding block sliding connection has the cylinder in the outer wall of slide bar, the bottom fixedly connected with cylinder of sliding block, and the bottom welding of cylinder has the installation piece, and abrasive brick fixed connection has fastening bolt in the one end of installation piece, and the bottom threaded connection of sliding block has.

Preferably: polishing subassembly is including polishing brush running roller and rotating electrical machines one, the bottom of polishing brush running roller is rotated and is connected with the revolving stage, the quantity of polishing brush running roller is two, the top fixedly connected with rotating electrical machines two of revolving stage, a rotating electrical machines fixed connection is in the top of revolving stage, a rotating electrical machines one, the band pulley has all been welded to the one end of rotating electrical machines two and polishing brush running roller, the quantity of band pulley is five, one of them band pulley fixed connection is in the bottom of locating plate, rotating electrical machines one passes through belt two with the locating plate and is connected, two polishing brush running rollers pass through belt three and connect, rotating electrical machines two pass through belt one with one of them polishing brush running roller and are.

Preferably: the top outer wall of revolving stage sets up to the oblique angle, and the blanking mouth has been seted up to the bottom of processing case, and the quantity of blanking mouth is two, and the inner wall fixedly connected with electro-magnet of blanking mouth, the top of electro-magnet have certain inclination, and the blanking case has been placed to the bottom of blanking mouth.

Preferably: the inner wall of the processing box is provided with a second sliding groove, the bottom of the processing box is rotatably connected with a first threaded rod, the first threaded rod is arranged inside the second sliding groove, the quantity of the second sliding groove and the quantity of the first threaded rod are two, one side of the top plate is fixedly connected with a second sliding block, the second sliding block is mutually matched with the second sliding groove, the top of the second sliding block is provided with a threaded hole, and the first threaded rod is in threaded connection with the threaded hole.

Preferably: and an included angle between the first sliding block and the push rod is one hundred twenty degrees.

Preferably: the number of the pressing blocks and the push rods is six.

Preferably: the outer wall of the positioning plate is provided with a positioning hole, and a positioning pin is inserted into the positioning hole.

Preferably: and the top of the first threaded rod is fixedly connected with a hand wheel.

A fixing method of a fixing clamp for machining comprises the following steps:

s1: lifting the top plate; rotating the hand wheel, rotating the threaded rod I and moving the top plate up and down;

s2: fixing the steel pipe; rotating the handle to enable the second threaded rod to move upwards to jack up the hexagonal bump, moving the first sliding block in the first sliding groove, pushing the pressing block outwards, and clamping the inner wall of the steel pipe;

s3: rotating the steel pipe; the rotating motor is started to drive the fixing component to rotate;

s4: polishing the steel pipe; the sliding block is used for attaching the grinding block to the outer wall of the steel pipe, the fastening bolt is rotated to fix the sliding block, and the air cylinder drives the grinding block to move up and down;

s5: polishing the steel pipe; pulling out the positioning pin, starting a second rotating motor, and driving the polishing hairbrush roller to rotate by the second rotating motor;

s6: collecting the blanking; the piece that polishes and the polishing produced falls into the processing bottom of the case portion, and the electro-magnet circular telegram is held the piece, and the back of cutting off the power supply, the piece falls into the workbin that falls.

The invention has the beneficial effects that:

1. the utility model provides a mounting fixture for machining, can press from both sides the steel pipe from the inner wall tightly through setting up fixed subassembly, utilize the handle to drive two rotations of threaded rod, two rebound of threaded rod, with hexagonal lug jack-ups, slider one slides down along spout, outwards release the compact heap, press from both sides tightly the steel pipe inner wall, effectively avoided pressing from both sides the problem that leads to polishing to have the dead angle to the steel pipe outer wall, a plurality of compact heaps equidistance press from both sides tightly, make the atress of steel pipe even, can not take place to rock, and can adjust the extension length of compact heap according to the diameter difference of steel pipe, increase the application scope of device.

2. The utility model provides a mounting fixture for machining can polish the steel pipe through setting up the subassembly of polishing, utilizes the sliding block to slide at the outer wall of slide bar, pastes the abrasive brick in the outer wall of steel pipe, rotates the fixed sliding block of fastening bolt again, and the cylinder drives the abrasive brick and reciprocates, realizes polishing comprehensively the outer wall of steel pipe, gets rid of the sediment of hanging and the burr that forms on the steel pipe outer wall, prevents to injure the staff, improves the quality of steel pipe simultaneously.

3. The utility model provides a mounting fixture for machining can polish the steel pipe outer wall through setting up polishing assembly, utilizes rotating electrical machines to drive fixed subassembly and rotates, and two drive polishing brush running rollers of rotating electrical machines rotate, and wherein fixed subassembly and polishing brush running rollers opposite direction of rotation effectively guarantee the effect of polishing, carry out the precision to the steel pipe and polish, guarantee the precision of steel pipe, improve the life of steel pipe.

4. The utility model provides a mounting fixture for machining, can carry out automatic collection with the piece of processing incasement through setting up the electro-magnet, the magnetic attraction that produces after the electro-magnet circular telegram is in the same place the whole absorptions of piece, again with the electro-magnet outage, in the piece that loses the constraint of magnetic attraction falls into the workbin that falls in neutral effect, the problem that piece pile and scatter in the processing incasement can effectively be solved to this kind of structure, keeps the cleanness in the processing incasement.

5. The utility model provides a mounting fixture for machining, through setting up threaded rod one, utilizes the hand wheel to rotate threaded rod one and can go up and down to the roof, and then makes the fixed subassembly with roof fixed connection remove, conveniently installs fast and dismantles the steel pipe, and is further, because fixed subassembly can the height-adjusting, so can press from both sides the steel pipe of tight different length, makes the device can press from both sides the steel pipe of pressing from both sides tight multiple size.

Drawings

Fig. 1 is a schematic overall structure diagram of a machining fixture according to the present invention;

FIG. 2 is a schematic structural view of a steel pipe of a machining fixture according to the present invention;

FIG. 3 is a schematic structural diagram of a fixing assembly of a fixing clamp for machining according to the present invention;

FIG. 4 is a schematic structural diagram of a polishing assembly of a fixing clamp for machining according to the present invention;

FIG. 5 is a schematic structural diagram of a polishing assembly of a machining fixture according to the present invention;

fig. 6 is an enlarged structural view of a portion a of a machining fixture according to the present invention.

In the figure: 1-processing box, 2-first threaded rod, 3-top plate, 4-steel pipe, 5-hand wheel, 6-polishing component, 7-polishing component, 8-blanking box, 9-blanking port, 10-electromagnet, 11-fixing component, 12-pressing block, 13-push rod, 14-first slide block, 15-hexagonal bump, 16-limiting cylinder, 17-fixing cylinder, 18-first chute, 19-positioning plate, 20-second threaded rod, 21-handle, 22-fixing block, 23-slide rod, 24-slide block, 25-fastening bolt, 26-air cylinder, 27-mounting block, 28-polishing block, 29-polishing brush roller, 30-first rotating motor, 31-second rotating motor, 32-first belt, and the like, 33-belt II, 34-belt III and 35-belt wheel.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1:

a fixing clamp for machining is disclosed, as shown in figures 1, 2, 3 and 6, and comprises a machining box 1, wherein the top of the machining box 1 is fixedly connected with a top plate 3, the bottom of the top plate 3 is fixedly connected with a grinding assembly 6 and a fixing assembly 11, the bottom of the machining box 1 is fixedly connected with a polishing assembly 7, the fixing assembly 11 comprises a pressing block 12 and a hexagonal convex block 15, one side of the pressing block 12 is tightly attached with a steel pipe 4, one end of the pressing block 12 is welded with a push rod 13, one end of the push rod 13 is welded with a first slider 14, an included angle between the first slider 14 and the push rod 13 is one hundred twenty degrees, the outer wall of the first slider 14 is slidably connected with a limiting cylinder 16, one end of the limiting cylinder 16 is welded with a fixing cylinder 17, the bottom of the fixing cylinder 17 is welded with a positioning plate 19, the outer wall of the hexagonal convex block 15 is provided with a first sliding groove 18, the, the bottom of the hexagonal lug 15 is rotatably connected with a second threaded rod 20, and the bottom of the second threaded rod 20 is welded with a handle 21; when the device is used, the handle 21 is rotated, the second threaded rod 20 moves upwards, the hexagonal convex block 15 is jacked up, the first sliding block 14 moves in the first sliding groove 18, the pressing block 12 is pushed outwards, the inner wall of the steel pipe 4 is clamped, the steel pipe 4 can be clamped from the inner wall through the arrangement of the fixing component 11, the handle 21 is utilized to drive the second threaded rod 20 to rotate, the second threaded rod 20 moves upwards, the hexagonal convex block 15 is jacked up, the first sliding block 14 slides downwards along the first sliding groove 18, the pressing block 12 is pushed outwards, the inner wall of the steel pipe 4 is clamped, the problem that the outer wall of the steel pipe 4 is clamped is effectively solved, the pressing blocks 12 are clamped at equal intervals, the steel pipe 4 is uniformly stressed, shaking cannot occur, the extending length of the pressing block 12 can be adjusted according to different diameters of the steel pipe 4, and the universality of the device is improved.

In order to solve the problem of removing rust on the outer wall of the steel pipe 4; as shown in fig. 1 and 4, the polishing assembly 6 includes a sliding block 24 and a polishing block 28, the bottom of the top plate 3 is welded with two fixing blocks 22, a sliding rod 23 is welded between the two fixing blocks 22, the sliding block 24 is slidably connected to the outer wall of the sliding rod 23, the bottom of the sliding block 24 is fixedly connected with an air cylinder 26, the bottom of the air cylinder 26 is welded with a mounting block 27, the polishing block 28 is fixedly connected to one end of the mounting block 27, the bottom of the sliding block 24 is connected with a fastening bolt 25 through a thread, when in use, the sliding block 24 slides to attach the polishing block 28 to the outer wall of the steel pipe 4, the sliding block 24 is fixed by rotating the fastening bolt 25, the air cylinder 26 drives the polishing block 28 to move up and down, the steel pipe 4 can be polished by arranging the polishing assembly 6, the sliding block 24 slides on the outer wall of the sliding rod 23, the polishing, the cylinder 26 drives the grinding block 28 to move up and down, so that the outer wall of the steel pipe 4 is comprehensively ground, rust on the outer wall of the steel pipe 4 is removed, and the quality of the steel pipe 4 is improved.

In order to solve the problem of precisely grinding the steel pipe 4; as shown in fig. 1 and 5, the polishing assembly 7 includes a first polishing brush roller 29 and a first rotating motor 30, the bottom of the first polishing brush roller 29 is rotatably connected to a turntable, the number of the polishing brush rollers 29 is two, the top of the turntable is fixedly connected to a second rotating motor 31, the first rotating motor 30 is fixedly connected to the top of the turntable, belt wheels 35 are welded to one ends of the first rotating motor 30, the second rotating motor 31 and the first polishing brush roller 29, the number of the belt wheels 35 is five, one of the belt wheels 35 is fixedly connected to the bottom of the positioning plate 19, a positioning hole is formed in the outer wall of the positioning plate 19, a positioning pin is inserted into the positioning hole, the first rotating motor 30 is connected to the positioning plate 19 through a second belt 33, the two polishing brush rollers 29 are connected through a third belt 34, and the second rotating motor 31 is connected to one; during the use, extract the locating pin, start rotating electrical machines one 30 and two 31 of rotating electrical machines, rotating electrical machines one 30 drives steel pipe 4 and rotates, two 31 of rotating electrical machines drive polishing brush running roller 29 and rotate, can polish 4 outer walls of steel pipe through setting up polishing subassembly 7, utilize one 30 of rotating electrical machines to drive fixed subassembly 11 and rotate, two 31 of rotating electrical machines drive polishing brush running roller 29 and rotate, wherein fixed subassembly 11 is opposite with polishing brush running roller 29 direction of rotation, effectively guarantee the effect of polishing, carry out the precision to steel pipe 4 and polish, guarantee steel pipe 4's precision, improve steel pipe 4's life.

In order to solve the problem of the accumulation of the scraps in the processing box 1; as shown in fig. 1, the outer wall of the top of the turntable is set to be an oblique angle, the bottom of the processing box 1 is provided with two blanking ports 9, the inner wall of each blanking port 9 is fixedly connected with an electromagnet 10, the top of each electromagnet 10 has a certain inclination angle, and a blanking box 8 is placed at the bottom of each blanking port 9; during the use, the piece that polishes and the polishing produced falls into processing case 1 bottom, electro-magnet 10 circular telegram holds the piece, after the outage, the piece falls into blanking case 8, can carry out automatic collection with the piece in processing case 1 through setting up electro-magnet 10, the magnetic attraction that produces after electro-magnet 10 circular telegram is whole to be inhaled the piece together, again with electro-magnet 10 outage, the piece that loses the constraint of magnetic attraction falls into blanking case 8 in neutral effect, the problem that the piece piles up and scatters in processing case 1 can effectively be solved to this kind of structure, keep the cleanness in the processing case 1.

In order to solve the problem of height adjustment of the fixing assembly 11; as shown in fig. 1, the inner wall of the processing box 1 is provided with a second sliding groove, the bottom of the processing box 1 is rotatably connected with a first threaded rod 2, the first threaded rod 2 is arranged inside the second sliding groove, the number of the second sliding groove and the first threaded rod 2 is two, the top of the first threaded rod 2 is fixedly connected with a hand wheel 5, one side of the top plate 3 is fixedly connected with a second sliding block, the second sliding block is matched with the second sliding groove, the top of the second sliding block is provided with a threaded hole, and the first threaded rod 2 is in threaded connection with; during the use, rotating hand wheel 5, threaded rod one 2 rotates, and roof 3 reciprocates, can go up and down roof 3 through setting up threaded rod one 2, and then makes the fixed subassembly 11 with roof 3 fixed connection remove, conveniently installs fast steel pipe 4, and is further, because fixed subassembly 11 can height-adjusting, so can press from both sides the steel pipe 4 of tight different length of clamp, make the device can press from both sides the steel pipe 4 of tight multiple size of clamp.

When the steel pipe polishing device is used, the threaded rod I2 is rotated by the hand wheel 5 to lift the top plate 3, so that the fixing component 11 fixedly connected with the top plate 3 moves, the steel pipe 4 is convenient to mount and dismount quickly, the threaded rod II 20 is driven by the handle 21 to rotate, the threaded rod II 20 moves upwards to jack up the hexagonal bump 15, the slider I14 slides downwards along the sliding groove I18 to push the pressing block 12 outwards to clamp the inner wall of the steel pipe 4, the positioning pin is pulled out, the rotating motor I30 drives the steel pipe 4 to rotate, the sliding block 24 slides on the outer wall of the sliding rod 23 to attach the grinding block 28 to the outer wall of the steel pipe 4, the fastening bolt 25 is rotated to fix the sliding block 24, the air cylinder 26 drives the grinding block 28 to move up and down, the outer wall of the steel pipe 4 is polished comprehensively, the rotating motor II 31 drives the polishing brush roller 29 to rotate, the fixing component 11 and the polishing brush roller 29, the magnetic attraction generated after the electromagnet 10 is powered on attracts all the scraps together, then the electromagnet 10 is powered off, and the scraps which are not bound by the magnetic attraction fall into the blanking box 8 under the neutral action.

Example 2:

a fixing method of a fixing clamp for machining comprises the following steps:

s1: the top plate 3 is lifted; the hand wheel 5 is rotated, the threaded rod I2 rotates, and the top plate 3 moves up and down;

s2: fixing the steel pipe 4; rotating the handle 21 to enable the second threaded rod 20 to move upwards to jack up the hexagonal bump 15, enabling the first sliding block 14 to move in the first sliding groove 18, pushing the pressing block 12 outwards, and clamping the inner wall of the steel pipe 4;

s3: rotating the steel pipe 4; starting the first rotating motor 30 to drive the fixing component 11 to rotate;

s4: polishing the steel pipe 4; the sliding block 24 is used for attaching the grinding block 28 to the outer wall of the steel pipe 4, the sliding block 24 is fixed by rotating the fastening bolt 25, and the cylinder 26 drives the grinding block 28 to move up and down;

s5: polishing the steel pipe 4; pulling out the positioning pin, starting the second rotating motor 31, and driving the polishing brush roller 29 to rotate by the second rotating motor 31;

s6: collecting the blanking; the scraps produced by grinding and polishing fall into the bottom of the processing box 1, the electromagnet 10 is electrified to suck the scraps, and after the power is cut off, the scraps fall into the blanking box 8.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A fixing clamp for machining comprises a machining box (1) and is characterized in that a top plate (3) is fixedly connected to the top of the machining box (1), a polishing assembly (6) and a fixing assembly (11) are fixedly connected to the bottom of the top plate (3), a polishing assembly (7) is fixedly connected to the bottom of the machining box (1), the fixing assembly (11) comprises a pressing block (12) and a hexagonal convex block (15), a steel pipe (4) is tightly attached to one side of the pressing block (12), a push rod (13) is welded to one end of the pressing block (12), a first sliding block (14) is welded to one end of the push rod (13), a limiting cylinder (16) is slidably connected to the outer wall of the first sliding block (14), a fixing cylinder (17) is welded to one end of the limiting cylinder (16), a positioning plate (19) is welded to the bottom of the fixing cylinder (17), and a first sliding groove (18) is, the first sliding groove (18) is matched with the first sliding block (14), the bottom of the hexagonal convex block (15) is rotatably connected with a second threaded rod (20), and a handle (21) is welded at the bottom of the second threaded rod (20).

2. The machining fixture according to claim 1, wherein the polishing assembly (6) comprises a sliding block (24) and a polishing block (28), the fixing block (22) is welded at the bottom of the top plate (3), the number of the fixing blocks (22) is two, the sliding block (23) is welded between the two fixing blocks (22), the sliding block (24) is connected to the outer wall of the sliding block (23) in a sliding mode, an air cylinder (26) is fixedly connected to the bottom of the sliding block (24), a mounting block (27) is welded at the bottom of the air cylinder (26), the polishing block (28) is fixedly connected to one end of the mounting block (27), and a fastening bolt (25) is connected to the bottom of the sliding block (24) in a threaded mode.

3. The fixing jig for machining according to claim 1, wherein the polishing assembly (7) comprises a first polishing brush roller (29) and a first rotating motor (30), the bottom of the first polishing brush roller (29) is rotatably connected with a turntable, the number of the first polishing brush roller (29) is two, the top of the turntable is fixedly connected with a second rotating motor (31), the first rotating motor (30) is fixedly connected with the top of the turntable, belt wheels (35) are welded at one ends of the first rotating motor (30), the second rotating motor (31) and the first polishing brush roller (29), the number of the belt wheels (35) is five, one of the belt wheels (35) is fixedly connected with the bottom of the positioning plate (19), the first rotating motor (30) is connected with the positioning plate (19) through a second belt (33), and the two polishing brush rollers (29) are connected through a third belt (34), the second rotating motor (31) is connected with one polishing brush roller (29) through a first belt (32).

4. The fixing clamp for machining according to claim 3, characterized in that the outer wall of the top of the rotary table is set to be an oblique angle, the bottom of the machining box (1) is provided with two blanking ports (9), the inner wall of each blanking port (9) is fixedly connected with an electromagnet (10), the top of each electromagnet (10) has a certain inclination angle, and a blanking box (8) is placed at the bottom of each blanking port (9).

5. The fixing clamp for machining according to claim 1, wherein a second sliding groove is formed in the inner wall of the machining box (1), a first threaded rod (2) is rotatably connected to the bottom of the machining box (1), the first threaded rod (2) is arranged inside the second sliding groove, the number of the second sliding groove and the number of the first threaded rod (2) are two, a second sliding block is fixedly connected to one side of the top plate (3), the second sliding block and the second sliding groove are matched with each other, a threaded hole is formed in the top of the second sliding block, and the first threaded rod (2) is in threaded connection with the threaded hole.

6. A machining fixture according to claim 1, wherein the included angle between the first slide block (14) and the push rod (13) is one hundred twenty degrees.

7. A machining fixture according to claim 1, wherein the number of the pressing blocks (12) and the push rods (13) is six.

8. The fixing clamp for machining according to claim 3, wherein a positioning hole is formed in the outer wall of the positioning plate (19), and a positioning pin is inserted into the positioning hole.

9. A machining fixture according to claim 5, characterized in that a hand wheel (5) is fixedly connected to the top of the first threaded rod (2).

10. A fixing method of a fixing clamp for machining is characterized by comprising the following steps:

s1: the top plate (3) is lifted; the hand wheel (5) is rotated, the threaded rod I (2) rotates, and the top plate (3) moves up and down;

s2: fixing the steel pipe (4); the handle (21) is rotated to enable the second threaded rod (20) to move upwards to jack up the hexagonal bump (15), the first sliding block (14) moves in the first sliding groove (18), the pressing block (12) is pushed outwards, and the inner wall of the steel pipe (4) is clamped;

s3: rotating the steel pipe (4); the first rotating motor (30) is started to drive the fixed component (11) to rotate;

s4: polishing the steel pipe (4); the sliding block (24) is used for attaching the grinding block (28) to the outer wall of the steel pipe (4), the sliding block (24) is fixed by rotating the fastening bolt (25), and the cylinder (26) drives the grinding block (28) to move up and down;

s5: polishing the steel pipe (4); pulling out the positioning pin, starting a second rotating motor (31), and driving the polishing brush roller (29) to rotate by the second rotating motor (31);

s6: collecting the blanking; the scraps generated by grinding and polishing fall into the bottom of the processing box (1), the electromagnet (10) is electrified to suck the scraps, and after the power is cut off, the scraps fall into the blanking box (8).