CN109202650B

CN109202650B - Polishing machine

Info

Publication number: CN109202650B
Application number: CN201811102285.4A
Authority: CN
Inventors: 程祥增; 邓志坚
Original assignee: Guangzhou Nobuhiro Packaging Machinery Co ltd
Current assignee: Guangzhou Nobuhiro Packaging Machinery Co ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2020-07-03
Anticipated expiration: 2038-09-20
Also published as: CN109202650A

Abstract

The invention discloses a polishing machine, which comprises a plurality of groups of grinding head transmission mechanisms, wherein each group of grinding head transmission mechanisms comprises a plurality of grinding head components; every bistrique subassembly is evenly fixed on the mounting panel that corresponds and by its divide into two parts about respectively, and the mounting panel below is work area, still including driving shaft and revolution motor, and every driving shaft both ends drive is connected two adjacent bistrique drive mechanism, be connected with tensioning sprocket assembly on the revolution motor output shaft, the tensioning sprocket assembly other end is connected on the driving shaft, still including roller chain subassembly, its both ends are connected respectively on two relative driving shafts. The transmission force is distributed to the plurality of grinding heads through a star-shaped wheel structure formed by driving a plurality of gears through one motor, the rotation of the grinding heads and the revolution of the grinding heads around the main shaft are combined to grind the stainless steel, and the grinding machine has the characteristics of large grinding range, uniform and synchronous grinding.

Description

Polishing machine

Technical Field

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

Background

The working process of polishing the stainless steel by the polishing machine is as follows: the stainless steel plate comes out of steel, and two polished surfaces exist, wherein one polished surface is 25-63 roughness, the surface is a matte wire drawing surface, the other polished surface is roughly polished in a steel mill, the roughness reaches 1.6-3.2, the polished surface is called a 2B plate, the surface is not matte, and the polished surface is bright. The purpose of polishing by a polishing machine is to polish the surface of the stainless steel into an 8K mirror surface; we want to achieve an 8K plate (i.e. 0.1-0.4 roughness), the 8K plate is a mirror plate with a certain number of lines on a certain area of the surface of the stainless steel plate.

The tradition has artifical polishing's mode, artifical hand-held type angle mill, and people's hand is thrown, and it is very obvious that throw out precision and stability by the manual work and all can be comparatively poor, influence the product uniformity, and artifical polishing in-process, dust and metal fillings can be produced on the stainless steel plate surface, produce great harm to operating personnel's healthy.

The traditional method is also mechanical polishing, a gantry is adopted to move on a stainless steel plate back and forth, the actions are different, the moving mode is left and right movement, continuous polishing is not performed, and the working efficiency is low; metal chips and abrasive particles ground during polishing are not well discharged, and residues exist in a working area, so that secondary abrasion and damage are easily caused on a plate surface during polishing of the stainless steel plate; the group of grinding heads is driven by 4 motors, each motor is 2.2-3 kw, and one grinding head corresponds to one motor, so that the energy consumption is high, faults are easy to occur, and the maintenance cost is high; on the other hand, the traditional motors are all arranged in a working area and are easy to damage in a humid acid environment, and the failure rate of the motors is high; and the traditional transmission mode of mechanical polishing is that belt pulley and belt accomplish the transmission, and the efficiency of belt transmission is low, and skids easily after lengthening and transships, blocks, and the loss is done work inefficiency, and the energy consumption is high, needs very powerful motor to realize the polishing, and the energy consumption is high, leads to transmission inefficiency.

Disclosure of Invention

The invention aims to overcome the technical problems of low transmission efficiency, easy slipping and overload after a belt is elongated and high energy consumption of the prior mechanical polishing transmission mode, and provides a polishing machine capable of driving a plurality of groups of grinding heads to work through a motor and a plurality of gears.

In order to achieve the purpose, the invention adopts the following technical scheme: a polishing machine comprises a plurality of groups of grinding head transmission mechanisms, wherein each group of grinding head transmission mechanisms comprises a plurality of grinding head components; each grinding head component is uniformly fixed on a corresponding mounting plate and is divided into an upper part and a lower part by the mounting plate, a working area is arranged below the mounting plate, each grinding head component comprises a transmission shaft capable of moving up and down and a grinding head arranged in the working area and driven by the transmission shaft, and a grinding head gear which is sleeved on the transmission shaft and can drive the transmission shaft to rotate is arranged above the mounting plate; a grinding head rotation motor is arranged above the mounting plate, and a transmission gear is connected with an output shaft of the grinding head rotation motor; a first connecting seat is fixed at the central position of the mounting plate, an inner bearing seat is connected to the first connecting seat, an outer bearing seat is arranged outside the inner bearing seat, a second gear and a first gear are respectively arranged at the upper end and the lower end of the outer bearing seat, the first gear is respectively meshed with a grinding head gear of each grinding head assembly at the periphery, and the second gear is meshed with a transmission gear; the main shaft penetrates through the center of the inner bearing seat, the lower end of the main shaft is connected in the first connecting seat and can drive the first connecting seat to rotate, and a first spiral bevel gear which can drive the main shaft to rotate is sleeved at the upper end of the main shaft, which is exposed out of the inner bearing seat; the grinding wheel grinding machine is characterized by further comprising a driving shaft and a revolution motor, two adjacent grinding head transmission mechanisms are connected to two ends of each driving shaft in a driving mode, a tensioning chain wheel assembly is connected to an output shaft of the revolution motor, the other end of the tensioning chain wheel assembly is connected to the driving shaft, and the grinding wheel grinding machine further comprises a roller chain assembly, wherein two ends of the roller chain assembly are connected to two opposite driving shafts respectively. The grinding head autorotation motor drives a star-shaped wheel structure formed by a plurality of gears and distributes transmission force to a plurality of grinding heads, the grinding heads are driven to autorotate, the traditional structure that one motor corresponds to one grinding head is replaced, the transmission efficiency is improved, meanwhile, the driving shaft is driven to rotate by the revolution motor, on one hand, two grinding head mechanisms connected through two ends of the driving shaft are driven to operate, on the other hand, the driving shaft rotates to drive the other driving shaft opposite to the driving shaft to rotate, therefore, four grinding head mechanisms are driven to operate, main shafts of the four grinding head mechanisms drive the mounting plate to rotate, thereby realizing that one revolution motor drives eight grinding heads of eight grinding head assemblies of the four grinding head mechanisms to revolve, realizing the combination of autorotation and revolution of the grinding heads, and more effectively improving the efficiency and the area of; meanwhile, the mounting plate is used for isolating the working area from the operating area, the problem that the service life of the motor is shortened and damaged due to the fact that the control motor is placed in the working area in the prior art is solved, and the service life and the control precision of the motor are improved.

And the two ends of the driving shaft are provided with second spiral bevel gears meshed with the first spiral bevel gears, and the driving shaft is connected with the grinding head transmission mechanism through the second spiral bevel gears.

The tensioning sprocket assembly comprises a first sprocket wound on a driving shaft and a first chain, one end of the first chain is connected with the first sprocket, and the other end of the first chain is connected with an output shaft of the revolution motor; the roller chain assembly comprises two second chain wheels which are respectively wound on the two driving shafts and second chains of which two ends are respectively connected with the two second chain wheels.

The second set screw penetrates through one side surface of the first connecting seat and abuts against the main shaft. The setting of holding screw makes things convenient for the main shaft to drive first connecting seat and rotates together on the one hand to drive the mounting panel and rotate together, finally formed four bistriques and rotated together, finally formed the revolution of star type wheel structure, on the other hand, when needs adjustment main shaft position, can unscrew holding screw, convenient operation.

The grinding head rotation motor is characterized by further comprising a coupler which is respectively connected with an output shaft of the grinding head rotation motor and a transmission gear shaft, wherein the coupler is used for connecting the two shafts and rotates together in the process of transmitting motion and power, and the coupler can be guaranteed not to be disengaged under normal conditions.

The lower surface of the grinding head is a working surface, the upper surface is an installation surface, the grinding head component also comprises a grinding head fixing component arranged on the grinding head installation surface, a fixed seat is fixedly arranged on the grinding head fixing component, a second connecting seat is arranged above the fixed seat, a grinding head bearing seat is arranged on the second connecting seat, the grinding head bearing seat is fixed above the installation plate, the grinding head gear is arranged above the grinding head bearing seat, the transmission shaft sequentially penetrates through the gear, the grinding head bearing seat, the second connecting seat, the fixed seat and the grinding head fixing assembly, the second connecting seat penetrates through the grinding head bearing seat to be connected with the lower end of the grinding head gear, a longitudinal annular compression cavity is defined inside the second connecting seat, below the grinding head gear and outside the transmission shaft, a mechanical compression spring is sleeved in the compression cavity around the transmission shaft, a boss is arranged in the compression cavity around the transmission shaft, and the upper end and the lower end of the mechanical compression spring are respectively abutted against the lower end of the grinding head gear and the boss. Used for compensating the grinding force of the grinding head. The bistrique is at the in-process that carries out the abrasive dust to corrosion resistant plate, it is invariable to need the grinding force, the required dynamics is controllable in certain extent, just can guarantee the degree of consistency and the smoothness on corrosion resistant plate surface, and after the bistrique grinding time had been long, the bistrique is worn and torn easily, lead to bistrique thickness attenuation, make the distance and the grinding force of bistrique and corrosion resistant plate contact change, the bistrique can not take place abundant pressure contact with the corrosion resistant plate, lead to grinding force not enough and inhomogeneous, finally lead to corrosion resistant plate's polishing inhomogeneous, it is not smooth enough, can not reach predetermined requirement, and influence bistrique life, this scheme can adapt to the slight change of bistrique thickness through elastic.

The inner side of the fixed seat is provided with a first flat key which is contacted with the lower end part of the transmission shaft, and the upper end of the transmission shaft is provided with a second flat key which is contacted with the grinding head gear. Through the transmission of the power of two parallel keys, drive transmission shaft and fixing base rotate together when making things convenient for the gear to rotate, and the transmission shaft also can reciprocate along the parallel key position.

The fixing seat is provided with a first fastening screw which penetrates through one side surface of the fixing seat and abuts against the transmission shaft. The setting of holding screw makes things convenient for the transmission shaft to drive the fixing base and rotates together on the one hand, finally drives the bistrique through bistrique fixed subassembly and carries out the biography of oneself, and on the other hand, when needs adjustment transmission shaft position, can unscrew holding screw, convenient operation.

A through positioning hole is formed in the middle of the grinding head, and an installation part is bonded on the installation surface of the grinding head; the grinding head comprises a grinding head body, a plurality of circular arc cutting grooves are evenly formed in the working face of the grinding head body along the same direction of circular arc radian, a plurality of circular arc cutting grooves are evenly formed in the edge of the working face of the grinding head body towards the edge of a positioning hole along the same direction of circular arc bending, and the circle centers of two circular arcs forming the circular arc cutting grooves are evenly distributed on the working face in 360-degree equal distribution mode by taking the center of the positioning hole as a rotation. When the grinding head works, metal chips generated when stainless steel is ground can be thrown away through the centrifugal force of the arc-shaped cutting grooves, the metal chip residues on the working surface of the grinding head are reduced, the constant grinding force of the grinding head on the surface of the stainless steel is effectively ensured, the secondary damage to the surface of the stainless steel is reduced, the failure probability of a transmission mechanism is also reduced, the balance of the rotating force of the grinding head is also ensured through the evenly-arranged arc-shaped cutting grooves, and the working stability of the grinding head is kept.

Compared with the prior art, the invention has the following advantages:

1. the transmission force is distributed to the four grinding heads through the star-shaped wheel structure formed by the motor and the gears, the traditional structure that one motor corresponds to one grinding head is replaced, and meanwhile, the rotation of the grinding head and the revolution of the grinding head around the main shaft are combined to grind the stainless steel, so that the stainless steel grinding machine has the characteristics of large grinding range, uniform and synchronous grinding, and the transmission efficiency is improved; the two ends of each driving shaft are in driving connection with two adjacent grinding head transmission mechanisms and the roller chain assemblies connected with the two driving shafts, and one revolution motor is connected with one main shaft through the tensioning chain wheel assemblies, so that the linkage of the two driving shafts is driven, and finally the operation of the four grinding head mechanisms is driven simultaneously; the energy consumption of the whole machine is well controlled by further utilizing signal feedback through the output of the constant speed and the constant torque of the motor;

2. the mounting plate is used for isolating the working area from the operating area, so that the motor is arranged outside the working area, a moist acid environment is separated, and the service life of the motor is prolonged;

3. when the gear rotates to drive the grinding head to work, a mechanical spring structure is adopted to provide a pretightening force for the grinding head, after the grinding head becomes thinner due to long-time grinding thickness, the contact distance between the grinding head and the stainless steel can be automatically compensated due to elastic deformation of spring compression, the distance between the grinding head and the workbench is basically constant, sufficient contact between the working surface of the grinding head and the stainless steel is guaranteed, the grinding head can keep a relatively constant grinding force during working, after the grinding head is abraded, the stable and compact state of the grinding head during grinding can be guaranteed through automatic compensation of elastic compression of the mechanical spring, the instability of products caused by abrasion of the grinding head is reduced, and the consistency of the products is improved.

Drawings

FIG. 1 is a partial cross-sectional view of the polishing machine of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a partial perspective view of FIG. 1;

FIG. 4 is a schematic view of a feeding mechanism of the polishing machine;

fig. 5 is a sectional view of a single grinding head transmission structure of fig. 1;

FIG. 6 is a perspective view of FIG. 5;

figure 7 is a cross-sectional view of the single grater assembly of figure 5;

FIG. 8 is a perspective view of FIG. 7;

FIG. 9 is a perspective view of the grinding head;

FIG. 10 is a top view of FIG. 9;

fig. 11 is a side sectional view of fig. 9.

Detailed Description

The invention is further illustrated by the following figures and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.

Example (b):

referring to fig. 1 to 3, a polishing machine is mounted on a whole frame, and includes four sets of grinding head transmission mechanisms mounted on a mounting plate 49, each set of grinding head transmission mechanism includes four grinding head assemblies, and the rotation of the grinding head assemblies includes the rotation of the grinding heads and the revolution of the grinding heads; each grinding head component is uniformly fixed on a corresponding mounting plate 10 and is divided into an upper part and a lower part by the mounting plate, the four grinding head components are uniformly arranged on the periphery of the mounting plate 10, a working area is arranged below the mounting plate 10, each grinding head component comprises a transmission shaft 6 capable of moving up and down and a grinding head 1 arranged in the working area and driven by the transmission shaft 6, and a grinding head gear 8 which is sleeved on the transmission shaft 6 and can drive the transmission shaft 6 to rotate is arranged above the mounting plate 10; a grinding head rotation motor 30 is arranged above the mounting plate 10, the grinding head rotation motor 30 is fixed on a motor support 31, a small bearing seat 34 is connected below the motor support 31, a transmission gear 33 is connected on the small bearing seat 34, an output shaft of the grinding head rotation motor 30 is connected to the transmission gear 33, the embodiment is respectively connected with the output shaft of the grinding head rotation motor 30 and the transmission gear 33 through a coupling 32, the coupling 32 has the advantages that a driving shaft and a driven shaft in different mechanisms can be firmly connected to rotate together and transmit movement and torque, a first connecting seat 35 is fixed on four grinding head components at the central position of the mounting plate 10, an inner bearing seat 36 is connected on the first connecting seat 35, an outer bearing seat 37 is arranged outside the inner bearing seat 36, a second gear 372 and a first gear 371 are respectively arranged at the upper end and the lower end of the outer bearing seat 37, the first gear 371 is respectively meshed with four grinding head gears 8 of the four, the second gear 372 is meshed with the transmission gear 33; the grinding head further comprises a main shaft 40, the top end of the main shaft is connected with a rotary joint 42, the rest part of the main shaft penetrates through the middle shaft of the inner bearing seat 36, the lower end of the main shaft is connected into the first connecting seat 35 and can drive the first connecting seat 35 to rotate, a first spiral bevel gear 41 is sleeved at the upper end, exposed out of the inner bearing seat 36, of the main shaft 40, the first spiral bevel gear 41 can drive the main shaft 40 to rotate under the driving of external force, and finally the main shaft 40 drives the mounting plate 10 to rotate through the rotation of the first connecting seat 35 connected with the lower end so as to realize the revolution of the grinding head 1; still including driving shaft 43 and revolution motor 50, every driving shaft 43 both ends drive connection two adjacent bistrique drive mechanism, be connected with tensioning sprocket assembly on the revolution motor 50 output shaft, the tensioning sprocket assembly other end is connected on driving shaft 43, still include roller chain subassembly, its both ends are connected respectively on two relative driving shafts 43, through the drive effect of revolution motor 50, tensioning sprocket assembly drives driving shaft 43 and rotates, driving shaft 43 drives bistrique drive mechanism, in this embodiment, driving shaft 43 both ends are equipped with the second spiral bevel gear 45 with first spiral bevel gear 41 engaged with, driving shaft 43 is connected with bistrique drive mechanism through second spiral bevel gear 45, drive first spiral bevel gear 41 and rotate, first spiral bevel gear 41 can drive main shaft 40 and rotate.

Further, the tension sprocket assembly of the present embodiment includes a first sprocket 44 wound around a driving shaft 43 and a first chain 46 having one end connected to the first sprocket 44 and the other end connected to an output shaft of the revolving motor 50; the roller chain assembly comprises two second chain wheels 47 respectively wound on the two driving shafts 43 and a second chain 48 with two ends respectively connected with the two second chain wheels 47, an output shaft of an revolution motor 50 is connected to the first chain wheel 44 through the first chain 46 to drive the driving shafts 43 to rotate, when the driving shafts 43 rotate, on one hand, two grinding head mechanisms adjacent to each other are driven to operate, on the other hand, the second chain wheels 47 wound on the second chain wheels are driven to rotate, the second chain wheels 47 drive the other driving shaft 43 opposite to each other through the second chain 48 connected with the second chain wheels to rotate, so that the other two grinding head mechanisms are driven synchronously, and finally, the four grinding head mechanisms operate synchronously.

Referring to fig. 5 and fig. 6, the star wheel transmission of the present embodiment works as follows: the grinding head rotation motor 30 drives the transmission gear 33 to rotate, the transmission gear 33 drives the second gear 372 to rotate, the second gear 372 rotates to drive the outer bearing seat 37 to rotate on the inner bearing seat 36, so that the first gear 371 is driven to rotate, grinding head gears 8 of the four grinding head assemblies are driven by the first gear 371, so that the drive transmission shaft 6 rotates, and finally the grinding head 1 is driven to rotate.

The revolution working process of the grinding head of the embodiment is as follows: the revolution motor 50 drives the tension chain wheel assembly to drive the driving shaft 43 to rotate, the driving shaft 43 drives the main shaft 40 to rotate through the second spiral bevel gear 45 with two ends meshed with the first spiral bevel gear 41, the main shaft 40 drives the mounting plate 10 to rotate through the rotation of the first connecting seat 35 connected with the lower end, so that the grinding head assembly rotates around the main shaft 40, and finally, the grinding head 1 revolves while rotating.

Referring to fig. 4, in order to provide a feeding mechanism for inputting a workpiece to be polished, the polishing machine of the present invention can polish metal, ceramic tiles, and glass, and the polished workpieces of different materials can be adapted by adjusting process parameters without changing the structure of the device, in this embodiment and the present invention, the polished workpiece is stainless steel as an example, and is fixed on a frame 54, and includes a tempered glass assembly 51 for supporting stainless steel on a worktable, because there is a certain requirement for acid resistance and high temperature, i.e., hardness, the tempered glass is used as a supporting member, an upper roller assembly 52 and a lower roller assembly 53 are respectively disposed at upper and lower positions of the tempered glass assembly 51, and stainless steel is disposed on the tempered glass assembly 51 through the stainless steel.

Referring to fig. 7 to 8, a grinding head mechanism with a floating compensation function is provided for compensating the grinding force of a grinding head 1, the grinding head 1 is made of wool felt, the lower surface of the grinding head 1 is a working surface, the upper surface is an installation surface, a grinding head fixing component 2 is connected to the installation surface, a fixing seat 3 is fixedly arranged on the grinding head fixing component 2, a second connecting seat 4 is arranged above the fixing seat 3, a grinding head bearing seat 5 is arranged on the second connecting seat 4, the grinding head bearing seat 5 is fixed on the installation plate, the grinding head mechanism further comprises a transmission shaft 6 capable of moving up and down, one end of the transmission shaft 6 is connected with a rotary joint 7, the rotary joint 7 is used for connecting an external water source and the like, the rest of the transmission shaft 6 sequentially penetrates through the centers of the grinding head bearing seat 5, the second connecting seat 4, the fixing seat 3 and the grinding head fixing component 2, and further comprises a grinding head gear, the connecting seat 4 penetrates through the inside of the bearing seat 5 and is connected with the lower end of a shaft sleeve 80 of the grinding head gear 8 to form an integral linkage structure, when the grinding head gear 8 rotates, the second connecting seat 4 can be driven to rotate, the grinding head bearing seat 5 does not rotate due to no linkage relation, a longitudinal annular compression cavity is arranged inside the second connecting seat 4, below the grinding head gear 8 and outside the transmission shaft 6 in a surrounding mode, specifically, the top end of the compression cavity is the lower end of the shaft sleeve seat 81, the periphery of the compression cavity is the outer side of the transmission shaft 6 and the side face of the second connecting seat 4 (if the shaft sleeve 80 extends to be connected with the second connecting seat, the compression cavity can also be regarded as the side face of the shaft sleeve 80), and the bottom end of the compression cavity is; in the compression cavity, a mechanical compression spring 9 is sleeved around the transmission shaft 6, the mechanical compression spring 9 is a mechanical spring, a boss 61 is arranged in the compression cavity around the transmission shaft 6, the upper end and the lower end of the mechanical compression spring 9 are respectively abutted against the lower end of a shaft sleeve seat 81 of the grinding head gear 8 and the boss 61, the mechanical compression spring 9 is elastically deformed under the extrusion of the boss 61 to form a compression force which can be finally applied to the grinding head 1, the top of the compression cavity is the lower end of the grinding head gear 8 (specifically the lower end of the shaft sleeve seat 81 of the grinding head gear 8), the bottom of the compression cavity is a step 41 formed in the second connecting seat 4, therefore, when the transmission shaft 6 is displaced up and down, the boss 61 mechanically compresses the spring 9 to form a compression force which compensates the loss of the grinding head 1 due to the thinned thickness, the transmission shaft 6 is displaced down to drive the fixed seat 3, the boss 61 is enabled to move downwards to the step 41, namely, the compression state A with the maximum compensation thickness is obtained, when the transmission shaft 6 moves upwards to drive the fixed seat 3, the grinding head fixing component 2 and the grinding head 1 also move upwards to the top end of the fixed seat 3 to abut against the bottom end of the second connecting seat 4, the boss 61 also moves upwards to the mechanical compression spring 9 and stops at the position B, namely, the minimum compensation thickness is obtained, the first flat key 10 in contact with the lower end part of the transmission shaft 6 is arranged on the inner side of the fixed seat 3, the second flat key 23 is arranged on the part, in contact with the grinding head gear 8, of the upper end of the transmission shaft 6, the transmission of force of the two flat keys is facilitated, the transmission shaft and the fixed seat; in this embodiment, the fixing base 3 and the grinding head fixing assembly 2 are connected through a connecting screw 20 and a hexagon bolt 21. The encoder can be added in the motor of this embodiment, through the comparison of encoder output signal and signal of telecommunication, judges whether the motor transships, through increasing control loop to the motor, utilizes motor output torque can real-timely receive the feedback, when no-load or mechanical compression spring has broken, then explains power weakening, then motor power reduces, accomplishes the information feedback to grinding force, makes grinding force more stable.

The autorotation grinding process of the grinding head of the embodiment is as follows: the transmission shaft 6 drives the fixing seat 3, the grinding head fixing component 2 and the grinding head 1 move downwards to the surface of the workbench, the grinding head gear 8 rotates under the action of external force, the transmission shaft 6 is driven to rotate together due to the arrangement of the second flat key 23, meanwhile, the connecting seat 4 connected with the grinding head gear 8 is abutted to the fixing seat 3 on the transmission shaft 6 by the second set screw 22 due to the arrangement of the first flat key 10, the grinding head fixing component 2 fixedly connected with the fixing seat 3 rotates together, and finally the grinding head 1 is driven to perform grinding operation on stainless steel.

The floating compensation working process aiming at the grinding head is as follows: fig. 7 shows that the lower end of the mechanical compression spring 9 in the compression chamber is located at the position of the dashed line B, at this time, the transmission shaft 6 drives the fixing base 3 to move upwards through the second set screw 22, and the fixing base abuts against the lowest end of the second connecting base 4, and cannot move upwards any more, and meanwhile, the boss 61 also drives the spring 9 to move upwards to the maximum compression state, so that the position B is the maximum compression state of the mechanical compression spring 9, and the corresponding position a is the minimum compression state of the mechanical compression spring 9; when the grinding work is started, the transmission shaft 6 moves downwards to drive the whole mechanism of the fixed seat 3, the grinding head fixed component 2 and the grinding head 1 to move downwards to the working platform, when the grinding head 1 is not worn, the grinding head 1 is tightly contacted with the stainless steel at the moment, the grinding force is not lost, the compensation is not needed, when the grinding head 1 works for a long time, the grinding head is worn, the thickness is thinned, the transmission shaft 6 will be displaced downwards under the elasticity of the mechanical compression spring 9, so that the transmission shaft 6 drives the fixed seat 3 and the grinding head fixing component 2 to move the grinding head 1 downwards, the pressure compensation is carried out on the reduction of the grinding force generated by the thinning of the thickness of the grinding head 1, wherein, the position a in fig. 3 is the maximum compensation thickness, when the boss 61 continuously moves down and finally falls on the step 41 of the second connecting seat 4, the mechanical compression spring 9 is shown extended a maximum distance to compensate for the maximum loss in thickness of the grinding head 1.

Further, as shown in fig. 9 to 11, the embodiment adopts the specific structure of the grinding head 1 as follows: the grinding head 1 is made of wool felt, the grinding head is integrally compressed into a whole by the wool felt under high pressure, a through positioning hole 11 is formed in the middle of the grinding head 1, the positioning hole is combined with a positioning block and can be used for positioning the grinding head, the mounting surface of the grinding head 1 is adhered to the mounting piece 12 through epoxy resin glue, and a magic tape can be arranged on the other surface of the mounting piece 12, so that the quick mounting of the grinding head can be realized; a plurality of arc cutting grooves 13 with the same arc bending direction are uniformly formed along the edge of the working surface of the grinding head 1 to the edge of the positioning hole 11, and the circle centers of two arcs forming the arc cutting grooves 13 are equally distributed on the working surface by taking the center of the positioning hole 5 as the rotation center for 360 degrees.

In this embodiment, four circular arc cutting grooves 13 are formed, corresponding to eight circular arcs, and the centers of the eight circular arcs are quartered by 360 degrees with the center of the positioning hole 11 as the rotation center. The groove depth of the circular arc cutting groove 13 is set to be 7.5mm, the eccentricity of an X axis from the center of each circular arc to the center of the positioning hole 11 is 14.5mm, the eccentricity of a Y axis is 59.5mm, and the radiuses of two circular arcs forming the circular arc cutting groove 4 are 77.5mm and 87.5mm respectively. In the present embodiment, the centers of the two arcs of each arc cutting groove 13 are located on one arc of the adjacent arc cutting groove 13.

The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. A polishing machine is characterized in that:

the grinding head transmission mechanism comprises a plurality of groups of grinding head transmission mechanisms, wherein each group of grinding head transmission mechanisms comprises a plurality of grinding head components;

each grinding head assembly is uniformly fixed on a corresponding mounting plate (10) and is divided into an upper part and a lower part by the mounting plate (10), a working area is arranged below the mounting plate (10), each grinding head assembly comprises a transmission shaft (6) capable of moving up and down and a grinding head (1) arranged in the working area and driven by the transmission shaft (6), and a grinding head gear (8) which is sleeved on the transmission shaft (6) and can drive the transmission shaft (6) to rotate is arranged above the mounting plate (10);

a grinding head rotation motor (30) is arranged above the mounting plate (10), and an output shaft of the grinding head rotation motor (30) is connected with a transmission gear (33); a first connecting seat (35) is fixed at the center of the mounting plate (10), an inner bearing seat (36) is connected onto the first connecting seat (35), an outer bearing seat (37) is arranged outside the inner bearing seat (36), a second gear (372) and a first gear (371) are respectively arranged at the upper end and the lower end of the outer bearing seat (37), the first gear (371) is respectively meshed with a grinding head gear (8) of each grinding head component at the periphery, and the second gear (372) is meshed with a transmission gear (33); the device also comprises a main shaft (40) which penetrates through the center of the inner bearing seat (36), the lower end of the main shaft is connected into the first connecting seat (35) and can drive the first connecting seat (35) to rotate, and a first spiral bevel gear (41) which can drive the main shaft (40) to rotate is sleeved at the upper end of the main shaft (40) exposed out of the inner bearing seat (36);

the grinding wheel grinding machine is characterized by further comprising a driving shaft (43) and a revolution motor (50), two ends of each driving shaft (43) are in driving connection with two adjacent grinding head transmission mechanisms, an output shaft of the revolution motor (50) is connected with a tensioning chain wheel assembly, the other end of the tensioning chain wheel assembly is connected to the driving shaft (43), the grinding wheel grinding machine further comprises a roller chain assembly, and two ends of the roller chain assembly are respectively connected to the two opposite driving shafts (43).

2. The polishing machine of claim 1, wherein: and second spiral bevel gears (45) meshed with the first spiral bevel gears (41) are arranged at two ends of the driving shaft (43), and the driving shaft (43) is connected with a grinding head transmission mechanism through the second spiral bevel gears (45).

3. The polishing machine of claim 1, wherein: the tensioning chain wheel assembly comprises a first chain wheel (44) wound on a driving shaft (43) and a first chain (46) of which one end is connected with the first chain wheel (44) and the other end is connected with an output shaft of the revolution motor (50); the roller chain assembly comprises two second chain wheels (47) respectively wound on the two driving shafts (43) and second chains (48) of which two ends are respectively connected with the two second chain wheels (47).

4. The polishing machine of claim 1, wherein: and the grinding head self-rotating grinding machine also comprises a coupling (32) which is respectively connected with an output shaft of the grinding head self-rotating motor (30) and a shaft of the transmission gear (33).

5. The polishing machine of any one of claims 1-4, wherein: the grinding head component further comprises a grinding head fixing component (2) arranged on the mounting surface of the grinding head (1), a fixing seat (3) is fixedly arranged on the grinding head fixing component (2), a second connecting seat (4) is arranged above the fixing seat (3), a grinding head bearing seat (5) is arranged on the second connecting seat (4), the grinding head bearing seat (5) is fixed above the mounting plate (10), the grinding head gear (8) is arranged above the grinding head bearing seat (5), the transmission shaft (6) sequentially penetrates through the centers of the grinding head gear (8), the grinding head bearing seat (5), the second connecting seat (4) penetrates through the grinding head bearing seat (5) to be connected with the lower end of the grinding head gear (8), a longitudinal annular compression cavity is formed inside the second connecting seat (4), below the grinding head gear (8) and outside the transmission shaft (6), a mechanical compression spring (9) is sleeved in the compression cavity around the transmission shaft (6), a boss (61) is arranged in the compression cavity around the transmission shaft (6), and the upper end and the lower end of the mechanical compression spring (9) are respectively abutted against the lower end of the grinding head gear (8) and the boss (61).

6. The polishing machine of claim 5, wherein: the device also comprises a second set screw (351) which passes through one side surface of the fixed seat (3) and is abutted against the main shaft (40).

7. The polishing machine of claim 6, wherein: a first flat key contacting with the lower end part of the transmission shaft (6) is arranged on the inner side of the fixed seat (3), and a second flat key (23) is arranged on the part contacting with the grinding head gear (8) at the upper end of the transmission shaft (6).

8. The polishing machine of claim 7, wherein: the fixing device also comprises a first set screw (22) which passes through one side surface of the fixing seat (3) and is abutted against the transmission shaft (6).

9. The polishing machine as claimed in claim 8, wherein a through positioning hole (11) is formed in the middle of the grinding head (1); the grinding head comprises a grinding head body (1), wherein a plurality of arc cutting grooves (13) with the same arc radian direction are uniformly formed in the working face along the grinding head body (1), a plurality of arc cutting grooves (13) with the same arc bending direction are uniformly formed in the edge of a positioning hole (11) along the edge of the working face along the grinding head body (1), and the circle centers of two arcs forming the arc cutting grooves (13) are distributed on the working face in a 360-degree equal distribution mode by taking the center of the positioning hole (11) as a rotation center.