CN114571327A

CN114571327A - Machining burnishing device

Info

Publication number: CN114571327A
Application number: CN202210478246.4A
Authority: CN
Inventors: 周国建
Original assignee: Hangzhou Jingxin Machinery Co ltd
Current assignee: Hangzhou Jingxin Machinery Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-06-03

Abstract

The invention discloses a machining polishing device, which relates to the technical field of machining and comprises a machining equipment main body, wherein mounting frames are fixedly mounted at two ends of the upper surface of the machining equipment main body, a positioning lifting device is arranged in the middle of the upper surface of the machining equipment main body, a polishing device is arranged above the positioning lifting device, and a chip removal mechanism fixedly mounted at the top of the mounting frames is arranged in front of the polishing device. This machining burnishing device is through utilizing changeing the roller and the abrasive band contact of polishing to the extrusion changes roller and elastic component, makes soft overcoat shell deformation, and through the deformation volume of the spacing piece restriction soft overcoat shell of elasticity, and the elastic modulus's of the elastic wall change in the cooperation simultaneously, makes soft overcoat shell bulldoze the fly leaf and change the roller, with the abrasive band in close contact with of polishing, and then treats to process the work piece and carry out efficient pressure and grind, thereby improve device's polishing efficiency.

Description

Machining burnishing device

Technical Field

The invention relates to the technical field of machining, in particular to a machining polishing device.

Background

With the continuous development of society, the continuous update of science and technology, the machine-building technology development is more and more advanced, provide convenient condition for people's production life, the polishing process is an important link in the machining process, often need process some small-size parts in the machining production process, and corresponding burnishing device is in the processing accurate grinding process of work piece, and more important position, but burnishing device is carrying out the processing of mechanical work piece, still has some shortcomings, based on the above description the inventor finds, current machining burnishing device mainly has following shortcoming, for example:

when the polishing device is used, the polishing abrasive belt is easy to separate from the surface of a workpiece, so that the polishing effect is poor, and the polishing precision is influenced by the adhesion of chips on the surface of the polishing abrasive belt.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a machining polishing device, which solves the problems that when the polishing device is used, a polishing abrasive belt is easy to separate from the surface of a workpiece, so that the polishing effect is poor, and the polishing precision is influenced due to the fact that chips are adhered to the surface of the polishing abrasive belt.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a machining polishing device comprises a machining equipment main body, wherein mounting frames are fixedly mounted at two ends of the upper surface of the machining equipment main body, a positioning lifting device is arranged in the middle of the upper surface of the machining equipment main body, a polishing device is arranged above the positioning lifting device, a chip removal mechanism fixedly mounted at the top of the mounting frames is arranged in front of the polishing device, the polishing device comprises a driving roller, a polishing abrasive belt and a driven roller, the inner surface of the polishing abrasive belt is movably connected with the outer surfaces of the driving roller and the driven roller, a pressing and grinding mechanism is arranged below the driving roller and comprises a movable plate, a rotating roller and an elastic component, two ends of the elastic component are fixedly connected with the inner side surface of the mounting frames, the outer surface of the elastic component is fixedly connected with the top of the movable plate, and the elastic component comprises a soft outer casing and a hard seat, the bottom surface fixedly connected with elasticity spacing piece and interior pressure elastic wall of stereoplasm seat, the inboard of interior pressure elastic wall is provided with soft interior cover shell, protection bag and play piece group.

Preferably, two ends of the movable plate are slidably connected with the inner side surface of the mounting frame, two ends of the rotating roller are rotatably connected with the inner wall of the movable plate, one end of the driving roller is fixedly connected with a driving device, two ends of the driven roller are rotatably connected with the inner side surface of the mounting frame, the driving roller is driven to rotate by the driving device, and the driven roller is matched with the grinding abrasive belt to rotate so as to polish the mechanical workpiece.

Preferably, two ends of the soft outer casing are fixedly connected with the inner side surface of the mounting frame, the top of the hard seat is fixedly connected with the top of the inner wall of the soft outer casing, the bottom surface of the hard seat is fixedly connected with the top of the inner pressure elastic wall, the bottom surface of the inner pressure elastic wall is fixedly connected with the inner surface of the soft outer casing, the top of the elastic limiting piece is fixedly connected with the outer surface of the hard seat, the inner surface of the soft outer casing at the bottom of the elastic limiting piece is fixedly connected, the inner pressure elastic wall and the elastic limiting piece are symmetrically arranged relative to the central line of the soft outer casing, and the movable plate and the rotary roller are pushed and pressed to be in close contact with the polishing abrasive belt through the deformation of the soft outer casing and are matched with the elastic limiting piece and the elastic modulus of the inner pressure elastic wall to polish the workpiece.

Preferably, the top of the soft inner casing is fixedly connected with a baffle, two ends of the baffle are fixedly connected with the bottom surface of the hard seat, the bottom surface of the soft inner casing is fixedly connected with an extrusion seat, the bottom surface of the extrusion seat is fixedly connected with the bottom surface of the inner cavity of the soft outer casing, the bottom of the inner cavity of the soft inner casing is fixedly connected with an energy-consuming elastic rib plate, the top of the energy-consuming elastic rib plate is fixedly connected with an arc-shaped pressing plate, the upper surface of the arc-shaped pressing plate is fixedly provided with a connecting support rod, and two ends of the connecting support rod are movably connected with the inner surface of the soft inner casing.

Preferably, the outer surface of the connecting support rod is fixedly connected with the bottom surface of the elastic sheet set, the top of the elastic sheet set is fixedly connected with the bottom surface of the protection bag, the outer surface of the protection bag is fixedly connected with the top of the inner cavity of the soft inner casing, and the whole deformation of the soft outer casing is ensured to be in a safe range by the resilience force generated by the compression of the protection bag and the elastic sheet set and the buffering generated by the pressure change.

Preferably, the chip removal mechanism is including fixed plate and diaphragm, the bottom surface of fixed plate and the top fixed connection of mounting bracket, the one end of diaphragm and the inboard fixed surface of fixed plate are connected, it detains the board to rotate on the inner wall of diaphragm to be connected with the scraping bits, the one end bottom surface of scraping the bits and detaining the board contacts with the surface in the abrasive band of polishing, the one end fixedly connected with metal elastic strip in the abrasive band of polishing is kept away from to the upper surface of scraping the bits and detaining the board, the top of metal elastic strip and the inner wall top fixed connection of diaphragm utilize the contact in scraping bits and detaining board and the abrasive band of polishing to strike off the piece.

Preferably, the one end fixed mounting who scrapes the upper surface of bits retention board and be close to the abrasive band of polishing has the magnet strip, the top of magnet strip is provided with connects the bent plate, the one end of connecting the bent plate is rotated with the inner wall of diaphragm and is connected, the other end fixedly connected with counter weight lance of connecting the bent plate, the bottom surface fixed mounting who connects the bent plate has the magnetic pillar, the last fixed surface of connecting the bent plate is connected with elasticity traction strip, the top of elasticity traction strip is connected with the go-between, the top of go-between and the inner wall top fixed connection of diaphragm, vibrations when the corollary equipment moves destroy the balanced state between magnetic pillar and magnet strip for the counter weight lance hammering is scraped the bits retention board, will scrape the piece that the bits retention board and shake down, prevents that the piece from piling up.

(III) advantageous effects

The invention provides a machining polishing device. The method has the following beneficial effects:

the mechanical processing polishing device solves the problems that when the polishing device is used, a polishing effect is poor due to the fact that a polishing belt is easily separated from the surface of a workpiece, and the polishing precision is affected due to the fact that the polishing belt is stuck and chipped on the surface of the polishing belt.

(II), this machining burnishing device utilizes and changes roller and the abrasive band contact of polishing to the extrusion changes roller and elastic component, makes soft overcoat shell deformation, and through the deformation volume of the spacing piece restriction soft overcoat shell of elasticity, presses the elastic modulus's of elasticity wall change in the cooperation simultaneously, makes soft overcoat shell bulldoze the fly leaf and change the roller, with the abrasive band in close contact with of polishing, and then treats to process the work piece and carry out efficient pressure and grind, thereby improve device's polishing efficiency.

(III), this machining burnishing device, through the soft interior cover shell of extrusion seat with pressure guide, make the deformation of soft interior cover shell to cooperation power consumption elasticity floor and arc preforming transmission pressure utilize even vaulting pole oppression shell fragment group and protection bag, by the resilience force that protection bag and shell fragment group pressurized production and the buffering that the pressure change produced, ensure that the whole deformation modulus of soft overcoat shell is in safe scope, and then the steady state during the guarantee polishing.

(IV), this machining burnishing device, utilize and scrape bits delay board and the contact in the abrasive band of polishing, strike off the piece, utilize the piece accumulation on scraping bits delay board, make the magnet strip be close to the magnetic column, vibrations when equipment operation is deuterogamy, destroy the balanced state between magnetic column and magnet strip, the drive is connected bent plate and counter weight lance and is rotated, the resilience tractive of rethread elasticity tractive strip, make counter weight lance hammering scrape bits delay board, the conduction of utilizing the power, will scrape the piece vibrations down on the bits delay board, prevent that the piece from piling up, thereby improve the polishing precision of device.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the interior of the present invention;

FIG. 3 is a schematic cross-sectional view of an elastomeric component of the present invention;

FIG. 4 is an enlarged view of the structure at A of FIG. 3 according to the present invention;

fig. 5 is a schematic cross-sectional structure view of the chip removal mechanism of the present invention;

FIG. 6 is an enlarged view of the structure at B of FIG. 5 according to the present invention.

In the figure: 1. machining the device body; 2. a polishing device; 21. a drive roll; 22. sanding an abrasive belt; 23. a driven roller; 3. positioning a lifting device; 4. a press grinding mechanism; 41. a movable plate; 42. rotating the roller; 43. an elastic component; 431. a soft outer casing; 432. a hard seat; 433. an elastic limiting sheet; 434. an internal pressure elastic wall; 435. a pressing base; a1, baffle; a2, soft inner case; a3, a protective bag; a4, elastic sheet group; a5, connecting support rods; a6, arc-shaped pressing sheets; a7, energy dissipation elastic rib plates; 5. a chip removal mechanism; 51. a fixing plate; 52. a transverse plate; 53. a scrap-scraping retention plate; 54. a metal elastic strip; b1, magnet bar; b2, magnetic pole; b3, connecting the bent plate; b4, counterweight striker; b5, elastic pulling strips; b6, connecting ring; 6. and (7) mounting frames.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-6, the invention provides a machining polishing device, comprising a machining device body 1, wherein mounting frames 6 are fixedly mounted at two ends of the upper surface of the machining device body 1, a positioning lifting device 3 is arranged in the middle of the upper surface of the machining device body 1, a polishing device 2 is arranged above the positioning lifting device 3, a chip removal mechanism 5 fixedly mounted at the top of the mounting frame 6 is arranged in front of the polishing device 2, the polishing device 2 comprises a driving roller 21, a sanding belt 22 and a driven roller 23, the inner surface of the sanding belt 22 is movably connected with the outer surfaces of the driving roller 21 and the driven roller 23, a press-grinding mechanism 4 is arranged below the driving roller 21, the press-grinding mechanism 4 comprises a movable plate 41, a rotary roller 42 and an elastic assembly 43, two ends of the elastic assembly 43 are fixedly connected with the inner side surface of the mounting frame 6, the outer surface of the elastic assembly 43 is fixedly connected with the top of the movable plate 41, the elastic component 43 comprises a soft outer casing 431 and a hard seat 432, the bottom surface of the hard seat 432 is fixedly connected with an elastic limiting sheet 433 and an internal pressure elastic wall 434, the inner side of the internal pressure elastic wall 434 is provided with a soft inner casing a2, a protective bag a3 and an elastic sheet group a4, two ends of the movable plate 41 are slidably connected with the inner side surface of the mounting frame 6, two ends of the rotating roller 42 are rotatably connected with the inner wall of the movable plate 41, one end of the driving roller 21 is fixedly connected with a driving device, two ends of the driven roller 23 are rotatably connected with the inner side surface of the mounting frame 6, the driving roller 21 is driven to rotate by the driving device, the driving roller 21 is matched with the sanding belt 22, the driven roller 23 is rotated, the mechanical workpiece is polished, and the sanding belt 22 is attached to the surface of the workpiece by matching with related components of the sanding mechanism 4, so that efficient polishing is performed.

Example 2

Referring to fig. 1 to 6, on the basis of embodiment 1, the present invention provides a technical solution: preferably, both ends of the soft outer shell 431 are fixedly connected with the inner side surface of the mounting frame 6, the top of the hard seat 432 is fixedly connected with the top of the inner wall of the soft outer shell 431, the bottom of the hard seat 432 is fixedly connected with the top of the inner pressure elastic wall 434, the bottom of the inner pressure elastic wall 434 is fixedly connected with the inner surface of the soft outer shell 431, the top of the elastic limiting sheet 433 is fixedly connected with the outer surface of the hard seat 432, the bottom of the elastic limiting sheet 433 is fixedly connected with the inner surface of the soft outer shell 431, the inner pressure elastic wall 434 and the elastic limiting sheet 433 are both arranged symmetrically about the central line of the soft outer shell 431, the top of the soft inner shell a2 is fixedly connected with a baffle plate a1, both ends of the baffle plate a1 are fixedly connected with the bottom of the hard seat 432, the bottom of the soft inner shell a2 is fixedly connected with a pressing seat 435, and the bottom of the pressing seat 435 is fixedly connected with the bottom of the inner cavity of the soft outer shell 431, the bottom of the inner cavity of the soft inner casing a2 is fixedly connected with an energy-consuming elastic ribbed plate a7, the top of the energy-consuming elastic ribbed plate a7 is fixedly connected with an arc-shaped pressing sheet a6, the upper surface of the arc-shaped pressing sheet a6 is fixedly provided with a connecting support rod a5, two ends of the connecting support rod a5 are movably connected with the inner surface of the soft inner casing a2, the outer surface of the connecting support rod a5 is fixedly connected with the bottom surface of a spring sheet group a4, the top of the spring sheet group a4 is fixedly connected with the bottom surface of a protective bag a3, the outer surface of the protective bag a3 is fixedly connected with the top of the inner cavity of the soft inner casing a2, a rotating roller 42 is contacted with a sanding belt 22 and presses the rotating roller 42 and an elastic component 43 to deform the soft outer casing 431 and limit the deformation of the outer casing 431 by an elastic limiting sheet 433, furthermore, pressure is guided to the soft inner casing a2 by a pressing seat 435 to deform the soft inner casing a2 and cooperate with the energy-consuming elastic ribbed plate a7 and the arc-shaped pressing sheet 6 to transmit pressure, the elastic sheet group a4 and the protective bag a3 are pressed by the connecting support rod a5, the resilience force and the buffering generated by the pressure change of the protective bag a3 and the elastic sheet group a4 ensure that the whole deformation modulus of the soft outer shell 431 is in a safe range, and simultaneously the change of the elastic modulus of the internal pressure elastic wall 434 is matched, so that the soft outer shell 431 pushes the movable plate 41 and the rotating roller 42 to be in close contact with the grinding abrasive belt 22, and further, the workpiece to be processed is efficiently ground.

Example 3

Referring to fig. 1 to 6, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the chip removal mechanism 5 comprises a fixed plate 51 and a transverse plate 52, the bottom surface of the fixed plate 51 is fixedly connected with the top of the mounting frame 6, one end of the transverse plate 52 is fixedly connected with the inner side surface of the fixed plate 51, the inner wall of the transverse plate 52 is rotatably connected with a chip retention plate 53, the bottom surface of one end of the chip retention plate 53 is in contact with the outer surface of the sanding belt 22, one end of the upper surface of the chip retention plate 53, which is far away from the sanding belt 22, is fixedly connected with a metal elastic strip 54, the top end of the metal elastic strip 54 is fixedly connected with the top of the inner wall of the transverse plate 52, one end of the upper surface of the chip retention plate 53, which is close to the sanding belt 22, is fixedly provided with a magnet strip b1, a connecting bent plate b3 is arranged above the magnet strip b1, one end of the connecting bent plate b3 is rotatably connected with the inner wall of the transverse plate 52, the other end of the connecting bent plate b3 is fixedly connected with a counterweight collision rod b4, the bottom surface of the connecting bent plate b3 is fixedly provided with a magnetic column b2, the upper surface of the connecting bent plate b3 is fixedly connected with an elastic pulling strip b5, the top of the elastic pulling strip b5 is connected with a connecting ring b6, the top of the connecting ring b6 is fixedly connected with the top of the inner wall of the transverse plate 52, the scraps are scraped by utilizing the contact of the scraps retaining plate 53 and the grinding abrasive belt 22, the accumulation of the scraps on the scraps retaining plate 53 is utilized, the magnet strip b1 is close to the magnet column b2, the balance state between the magnet column b2 and the magnet strip b1 is destroyed by the vibration of the running equipment, the connecting bent plate b3 and the counterweight striking rod b4 are driven to rotate, the rebounding traction of the elastic pulling strip b5 is utilized, the counterweight striking rod b4 hammers the scraps retaining plate 53, the scraps on the scraps retaining plate 53 are shaken by utilizing the conduction of force, the scraps are prevented from being accumulated, and the polishing precision of the device is improved.

The following is a detailed description of the principles of the mechanical working polishing apparatus in operation.

During operation, a workpiece to be processed is firstly placed on the positioning lifting device 3, then the equipment is started, the workpiece is lifted to a proper position, the driving device is started, the driving roller 21 is driven to rotate by the driving device, the driving roller 21 is matched with the sanding belt 22, the driven roller 23 is driven to rotate, the mechanical workpiece is polished, meanwhile, the rotating roller 42 is in contact with the sanding belt 22 and presses the rotating roller 42 and the elastic component 43, the soft outer shell 431 is deformed, the deformation amount of the soft outer shell 431 is limited by the elastic limiting piece 433, furthermore, the pressure is guided to the soft inner shell a2 by the pressing seat 435, the soft inner shell a2 is deformed, the pressure is transmitted by matching with the energy consumption elastic rib plate a7 and the arc-shaped pressing piece a6, the elastic piece group a4 and the protective bag a3 are pressed by the connecting support rod a5, and the resilience force and the pressure change generated by the protective bag a3 and the elastic piece group a4 are buffered, ensuring the whole deformation modulus of the soft outer shell 431 to be in a safe range, matching with the change of the elastic modulus of the inner pressure elastic wall 434, making the soft outer shell 431 push the movable plate 41 and the rotating roller 42 to be in close contact with the sanding belt 22, further making the sanding belt 22 be attached to the surface of a workpiece, and performing pressure grinding on the workpiece, furthermore, utilizing the contact between the scrap-scraping retention plate 53 and the sanding belt 22 to scrape off the scraps, utilizing the accumulation of the scraps on the scrap-scraping retention plate 53 to make the magnet strip b1 close to the magnet column b2, then matching with the vibration during the operation of the equipment, breaking the balance state between the magnet column b2 and the magnet strip b1, driving the connecting bent plate b3 and the counterweight striking rod b4 to rotate, and utilizing the rebound traction of the elastic traction rod b5 to make the counterweight striking rod b4 hammer the scrap-scraping plate 53, utilizing the conduction of the force to knock down the scraps on the scrap retention plate 53, and preventing the scraps from accumulation, and after the workpiece is polished, closing the equipment, and taking down and storing the workpiece.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element described by the phrase "comprising a. -" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a machining burnishing device, includes machining equipment main part (1), the upper surface both ends fixed mounting of machining equipment main part (1) has mounting bracket (6), the upper surface middle part of machining equipment main part (1) is provided with location elevating gear (3), the top of location elevating gear (3) is provided with burnishing device (2), the place ahead of burnishing device (2) is provided with chip removal mechanism (5) of fixed mounting at the top of mounting bracket (6), burnishing device (2) are including drive roll (21), the abrasive band (22) of polishing and driven voller (23), the internal surface of the abrasive band (22) of polishing and the surface swing joint of drive roll (21), driven voller (23), its characterized in that: the pressing and grinding mechanism (4) is arranged below the driving roller (21), the pressing and grinding mechanism (4) comprises a movable plate (41), a rotating roller (42) and an elastic component (43), two ends of the elastic component (43) are fixedly connected with the inner side surface of the mounting frame (6), the outer surface of the elastic component (43) is fixedly connected with the top of the movable plate (41), the elastic component (43) comprises a soft outer casing (431) and a hard seat (432), the bottom surface of the hard seat (432) is fixedly connected with an elastic limiting sheet (433) and an inner pressure elastic wall (434), and the inner side of the inner pressure elastic wall (434) is provided with a soft inner casing (a 2), a protective bag (a 3) and an elastic sheet group (a 4).

2. A machining polishing device according to claim 1, characterized in that: the both ends of fly leaf (41) and the inboard surface sliding connection of mounting bracket (6), the both ends of changeing roller (42) are rotated with the inner wall of fly leaf (41) and are connected, the one end fixedly connected with drive arrangement of drive roll (21), the both ends of driven voller (23) are rotated with the inboard surface of mounting bracket (6) and are connected.

3. A machining polishing device according to claim 1, characterized in that: the soft outer shell (431) is fixedly connected with the inner side surface of the mounting frame (6) at two ends, the top of the hard seat (432) is fixedly connected with the top of the inner wall of the soft outer shell (431), the bottom surface of the hard seat (432) is fixedly connected with the top of the inner pressure elastic wall (434), the bottom surface of the inner pressure elastic wall (434) is fixedly connected with the inner surface of the soft outer shell (431), the top of the elastic limiting piece (433) is fixedly connected with the outer surface of the hard seat (432), the inner surface of the bottom soft outer shell (431) of the elastic limiting piece (433) is fixedly connected, and the inner pressure elastic wall (434) and the elastic limiting piece (433) are symmetrically arranged relative to the central line of the soft outer shell (431).

4. A machining polishing device according to claim 1, characterized in that: the energy-saving inner sleeve shell is characterized in that a baffle (a 1) is fixedly connected to the top of the soft inner sleeve shell (a 2), two ends of the baffle (a 1) are fixedly connected with the bottom surface of the hard seat (432), an extrusion seat (435) is fixedly connected to the bottom surface of the soft inner sleeve shell (a 2), the bottom surface of the extrusion seat (435) is fixedly connected with the bottom surface of an inner cavity of the soft outer sleeve shell (431), an energy-consuming elastic rib plate (a 7) is fixedly connected to the bottom of the inner cavity of the soft inner sleeve shell (a 2), an arc-shaped pressing plate (a 6) is fixedly connected to the top of the energy-consuming elastic rib plate (a 7), a connecting and supporting rod (a 5) is fixedly mounted on the upper surface of the arc-shaped pressing plate (a 6), and two ends of the connecting and supporting rod (a 5) are movably connected with the inner surface of the soft inner sleeve shell (a 2).

5. A machining polishing device according to claim 4, characterized in that: the outer surface of the connecting support rod (a 5) is fixedly connected with the bottom surface of the elastic sheet group (a 4), the top of the elastic sheet group (a 4) is fixedly connected with the bottom surface of the protective bag (a 3), and the outer surface of the protective bag (a 3) is fixedly connected with the top of the inner cavity of the soft inner casing (a 2).

6. A machining polishing device according to claim 1, characterized in that: chip removal mechanism (5) is including fixed plate (51) and diaphragm (52), the bottom surface of fixed plate (51) and the top fixed connection of mounting bracket (6), the one end of diaphragm (52) is connected with the inboard fixed surface of fixed plate (51), it detains board (53) to rotate to be connected with the bits of scraping on the inner wall of diaphragm (52), the one end bottom surface of scraping bits and detaining board (53) contacts with the surface of abrasive band (22) of polishing, the one end fixedly connected with metal elastic strip (54) of abrasive band (22) are kept away from to the upper surface of scraping bits and detaining board (53), the top of metal elastic strip (54) and the inner wall top fixed connection of diaphragm (52).

7. A machining polishing device according to claim 6, characterized in that: the upper surface of scraping bits retention plate (53) is close to the one end fixed mounting who polishes abrasive band (22) has magnet strip (b 1), the top of magnet strip (b 1) is provided with connects bent plate (b 3), the one end of connecting bent plate (b 3) is rotated with the inner wall of diaphragm (52) and is connected, the other end fixedly connected with counter weight lance (b 4) of connecting bent plate (b 3), the bottom surface fixed mounting who connects bent plate (b 3) has magnetic column (b 2), the last fixed surface of connecting bent plate (b 3) is connected with elasticity traction strip (b 5), the top of elasticity traction strip (b 5) is connected with go-between (b 6), the top of go-between (b 6) and the inner wall top fixed connection of diaphragm (52).