阅读说明：本技术 一种环保型水晶玻璃加工 (Environment-friendly crystal glass processing ) 是由 林有艺 于 2019-11-07 设计创作，主要内容包括：本发明公开了一种环保型水晶玻璃加工,包括以下步骤：研磨,根据配料的重量百分比进行混合后研磨；熔融,将上述研磨混合物放入加热炉中进行熔融；浇铸,将熔融后的液体配料浇铸到磨具中,再进行退火,得到环保型空心水晶玻璃球体；磨面,采用磨面装置对水晶玻璃球外表面进行粗磨、精磨、抛光；所述步骤e中的磨面装置包括机体、用于夹持水晶玻璃球的夹持组件、对水晶玻璃球外表面进行粗磨和精磨及抛光的磨面机构、用于磨面机构中的粗磨和精磨及抛光之间转动的转换组件。本发明结构简单,具有粗磨、精磨和抛光一体化设备,且生产效率高和加工精度高。(The invention discloses an environment-friendly crystal glass processing method, which comprises the following steps: grinding, namely mixing and grinding the materials according to the weight percentage of the ingredients; melting, namely putting the grinding mixture into a heating furnace for melting; casting, namely casting the melted liquid ingredients into a grinding tool, and annealing to obtain the environment-friendly hollow crystal glass spheres; grinding the surface, namely performing coarse grinding, fine grinding and polishing on the outer surface of the crystal glass ball by adopting a surface grinding device; and e, the surface grinding device in the step e comprises a machine body, a clamping assembly for clamping the crystal glass ball, a surface grinding mechanism for performing coarse grinding, fine grinding and polishing on the outer surface of the crystal glass ball, and a conversion assembly for rotating between the coarse grinding, the fine grinding and polishing in the surface grinding mechanism. The invention has simple structure, integrated equipment of coarse grinding, fine grinding and polishing, high production efficiency and high processing precision.)

1. The environment-friendly crystal glass processing is characterized in that: the method comprises the following steps:

a. grinding: mixing and grinding the materials according to the weight percentage of the ingredients;

b. melting: putting the ground mixture into a heating furnace for melting;

c. casting: casting the melted liquid ingredients into a grinding tool, and annealing to obtain the environment-friendly hollow crystal glass sphere;

e. grinding the surface: adopting a surface grinding device to carry out coarse grinding, fine grinding and polishing on the outer surface of the crystal glass ball;

wherein, the face grinding device in step e comprises a body (1), a clamping assembly (2) for clamping the crystal glass ball, a face grinding mechanism (3) for performing rough grinding, fine grinding and polishing on the outer surface of the crystal glass ball, and a conversion assembly (4) for rotating between the rough grinding, the fine grinding and polishing in the face grinding mechanism, wherein the clamping assembly (2) comprises an air inlet pipe (21), an air inlet (22) arranged at the upper end of the air inlet pipe, a rubber ball (23) sleeved on the upper end of the air inlet pipe in a sealing manner, a plurality of balls (24) arranged at the upper end of the air inlet pipe in the rubber ball in an equidistant annular manner, a plurality of slide rails (25) arranged on the outer wall of the air inlet pipe in the rubber ball in an equidistant annular manner, a first connecting rod (26) arranged on the slide rail in a movable manner, a second connecting rod (27) arranged on, Locate gyro wheel (28) of head rod and second connecting rod rotation department, be used for driving intake pipe pivoted first driving piece (29), quartzy glass ball is put in the intake pipe that the cover has the rubber ball, gas in the intake pipe pours into the rubber ball into from the air inlet in, the rubber ball grow, the rubber ball outer wall laminates with quartzy glass ball inner wall, a plurality of balls withstand the rubber ball inner wall, indirect withstand quartzy glass ball inner wall, slide rail drive head rod and second connecting rod remove in opposite directions, the gyro wheel withstands the rubber ball inner wall, indirect withstand quartzy glass ball inner wall, accomplish the fixed work of quartzy glass ball, the face grinding mechanism withstands quartzy glass ball outer wall, first driving piece starts to drive the intake pipe and rotates, thereby drive quartzy glass ball and rotate, the face grinding mechanism is to the comprehensive face grinding of quartzy glass ball outer wall.

2. The process of claim 1, wherein: the melting temperature in the step b is controlled to be 1400 ℃ to 1500 ℃, and the time is controlled to be 5-6 h.

3. The process of claim 1, wherein: and (c) keeping the annealing temperature in the step (b) at 600 ℃ for 0.5 h.

4. The process of claim 1, wherein: the grinding mechanism (3) comprises a shaft seat (31), a rough grinding part (32) and a fine grinding part (33) which are annularly distributed on the shaft seat at equal intervals and have the same structure, and a polishing part (34), wherein the rough grinding part (32) comprises a fixed seat (321) which is obliquely arranged, a first pressure sensing part (322) which is fixedly arranged on the fixed seat, a second pressure sensing part (323) which is symmetrically and fixedly arranged on the fixed seat together with the first pressure sensing part, a first rough grinding part (324) which is arranged on the first pressure sensing part and used for roughly grinding the outer surface of the crystal glass ball in a semicircular shape, a second rough grinding part (325) which is arranged on the second pressure sensing part and used for roughly grinding the outer surface of the crystal glass ball, a plurality of curve grooves (326) are arranged on the first rough grinding part and the second rough grinding part, the rough grinding part is positioned at the crystal glass ball, the first pressure sensing part and the second pressure sensing part are started simultaneously, the first rough grinding part and the second rough grinding part, and a certain pressure is applied to the crystal glass ball, and the crystal glass ball rotates by taking the air inlet pipe as an axis, so that the overall rough grinding work of the outer surface of the crystal glass ball is completed.

5. The process of claim 1, wherein: the conversion assembly (4) comprises a rotary table (41) which is arranged on the shaft seat in a rotating mode by taking the shaft seat as a center, a base (42) arranged above the rotary table, a first one-way gear (43) which is arranged on the base in a rotating mode by being positioned at the center of the base, a rotating seat (44) which is arranged on the base in a rotating mode, a fixed shaft (45) fixedly arranged in the middle of the first one-way gear, a connecting seat (46) sleeved on the fixed shaft, two rotating shafts (47) penetrating through the rotating seat and rotatably arranged at two ends of the connecting seat, a second one-way gear (48) and a third one-way gear (49) sleeved on the two rotating shafts and meshed with the first one-way gear, two first driven gears (410) sleeved on the two rotating shafts, two connecting shafts (420) penetrating through the two rotating shafts and fixedly arranged on the rotary table, a second driven gear (430, An arc groove (440) arranged on the base, two rolling parts (450) respectively arranged at one end of two connecting shafts on the arc groove, three blocking rods (460) distributed on the shaft seat in an equidistant annular manner, a blocking part (470) matched with the blocking rods, a second driving part (480) used for driving the blocking part to rotate, a third driving part (490) used for driving the first one-way gear to rotate, a friction plate (4100) fixedly sleeved on the turntable, and a confining part (4200) fixedly arranged on the shaft seat and used for confining the friction plate, wherein the third driving part is started to drive the first one-way gear to rotate so as to drive the second one-way gear and the third one-way gear to rotate, namely to drive the two rotating shafts to rotate, two first driven gears arranged on the two rotating shafts to rotate, the second driven gear is respectively engaged with the first driven gear and the base to drive the second driven gear to revolve and use the fixed shaft as the axis, the two connecting shafts are fixedly arranged on the rotary table and drive the rotary table to rotate, the fastening piece is started to fasten the friction plate, the rotary table rotates to drive the shaft seat to integrally rotate, the conversion among the coarse grinding piece, the fine grinding piece and the polishing piece is completed, after the gear rod contacts the gear piece, the fastening piece is closed, the shaft seat stops rotating in the rotating process of the rotary table, the second driving piece drives the gear piece to rotate 180 degrees, the gear piece and the gear rod can be separated, the fastening piece is started to drive the shaft seat to rotate, the second driving piece drives the gear piece to rotate 180 degrees to return, the above work is repeated, and the work of exchanging among the coarse grinding piece, the fine grinding piece and the polishing piece is.

Technical Field

The invention relates to the technical field of crystal glass processing, in particular to environment-friendly crystal glass processing.

Background

With the improvement of the technical level, the equipment for grinding the crystal glass balls, namely the crystal glass ball grinder, replaces the original pure manual operation of grinding the crystal pieces on the grinding disc by hands, and becomes the main equipment for processing the crystal workpieces at present.

During processing, firstly, roughly grinding a crystal workpiece, and then, after the rough grinding is finished, two operation modes are provided, wherein one mode is that the crystal ball workpiece is dismounted and then is arranged in equipment with a fine grinding disc for continuous processing, and after the fine grinding is finished, the crystal ball workpiece is dismounted and then is arranged in equipment with a polishing disc for continuous processing; the other is to change the grinding disc, namely, the rough grinding disc is detached and is sequentially changed into a fine grinding disc and a polishing disc for grinding. The processing equipment has the defects of low working efficiency and low processing precision of the crystal workpiece.

Disclosure of Invention

The invention provides environment-friendly crystal glass processing for overcoming the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: an environment-friendly crystal glass processing method comprises the following steps:

a. grinding: mixing and grinding the materials according to the weight percentage of the ingredients;

b. melting: putting the ground mixture into a heating furnace for melting;

c. casting: casting the melted liquid ingredients into a grinding tool, and annealing to obtain the environment-friendly hollow crystal glass sphere;

e. grinding the surface: adopting a surface grinding device to carry out coarse grinding, fine grinding and polishing on the outer surface of the crystal glass ball;

wherein, the surface grinding device in the step e comprises a machine body, a clamping component for clamping the crystal glass ball, a surface grinding mechanism for carrying out rough grinding, fine grinding and polishing on the outer surface of the crystal glass ball, and a conversion component for rotating between the rough grinding, the fine grinding and polishing in the surface grinding mechanism, the clamping component comprises an air inlet pipe, an air inlet arranged at the upper end of the air inlet pipe, a rubber ball sleeved at the upper end of the air inlet pipe in a sealing way, a plurality of balls positioned in the rubber ball and annularly distributed at the upper end of the air inlet pipe, a plurality of slide rails positioned in the rubber ball and annularly distributed at equal intervals on the outer wall of the air inlet pipe, a first connecting rod with one end movably arranged on the slide rail, a second connecting rod with one end movably arranged on the slide rail and the other end rotatably arranged on the other end of the first connecting rod, a roller arranged, the quartzy glass ball is put in the intake pipe that the cover has the rubber ball, gaseous follow the air inlet in the intake pipe pours into the rubber ball into, the rubber ball grow, rubber ball outer wall and the laminating of quartzy glass ball inner wall, a plurality of balls withstand the rubber ball inner wall, indirect withstand quartzy glass ball inner wall, slide rail drive head rod and second connecting rod move in opposite directions, the gyro wheel withstands rubber ball inner wall, indirect withstand quartzy glass ball inner wall, accomplish the fixed work of quartzy glass ball, the facing mechanism withstands quartzy glass ball outer wall, first driving piece starts to drive the intake pipe and rotates, thereby drive quartzy glass ball and rotate, facing mechanism is to the comprehensive facing of quartzy glass ball outer wall. According to the invention, the rapid clamping work is realized through the clamping assembly, the situation that the crystal glass cannot be ball-milled after clamping is avoided, and the damage to the crystal glass ball in the clamping process can be avoided; the conversion work among coarse grinding, fine grinding and polishing is completed through the conversion assembly, and the outer surface of the crystal glass ball is subjected to comprehensive surface grinding treatment through the surface grinding structure, so that the grinding quality is high; the crystal glass ball is placed on the air inlet pipe sleeved with the rubber ball, the air in the air inlet pipe is injected into the rubber ball from the air inlet to enlarge the rubber ball, even if the outer wall of the rubber ball is attached to the inner wall of the crystal glass ball to complete the fixing work, the inner wall of the crystal glass ball is indirectly propped by the plurality of balls, the first connecting rod and the second connecting rod are driven by the sliding rail to move in opposite directions, so that the roller is pressed against the inner wall of the rubber ball to indirectly press against the inner wall of the crystal glass ball, the stress area and the extrusion force are increased, the fixing work of the crystal glass ball is firmer, meanwhile, the fixed crystal glass ball rotates by taking the axis of the air inlet pipe as the center, the surface grinding mechanism is attached to the outer wall of the crystal glass ball, the first driving piece is started to drive the air inlet pipe to rotate, thereby driving the crystal glass ball to rotate, and the surface grinding mechanism comprehensively grinds the outer wall of the crystal glass ball, thereby improving the processing efficiency and the quality.

The melting temperature in the step b is controlled to be 1400 ℃ to 1500 ℃, and the time is controlled to be 5-6 h; the raw materials are fully fused together, and the crystal glass has good light transmission effect.

And (c) the annealing temperature in the step (b) is 600 ℃, and the heat is preserved for 0.5h, so that the crystal glass is easier to form and has certain impact resistance.

The grinding mechanism comprises a shaft seat, a rough grinding part, a fine grinding part and a polishing part, wherein the rough grinding part and the fine grinding part are arranged on the shaft seat in an equal-distance annular distribution mode and comprise a fixed seat arranged obliquely, a first pressure sensing part fixedly arranged on the fixed seat, a second pressure sensing part symmetrically and fixedly arranged on the fixed seat with the first pressure sensing part, a first rough grinding part arranged on the first pressure sensing part and used for roughly grinding the outer surface of the crystal glass ball in a semicircular shape, a second rough grinding part arranged on the second pressure sensing part and used for roughly grinding the outer surface of the crystal glass ball, and a plurality of curve grooves are formed in the first rough grinding part and the second rough grinding part, the rough grinding part is positioned at the crystal glass ball, the first pressure sensing part and the second pressure sensing part are started simultaneously, the first rough grinding part and the second rough grinding part are close to the crystal glass ball and cling to the outer surface of the crystal glass ball, and give a, the overall rough grinding work of the outer surface of the crystal glass ball is finished by the crystal glass ball which rotates by taking the air inlet pipe as an axis. The first pressure sensing part and the second pressure sensing part are started simultaneously, so that the first coarse grinding part and the second coarse grinding part are close to the crystal glass ball and are attached to the outer surface of the crystal glass ball, the first coarse grinding part and the second coarse grinding part are kept under the same stress in the process of replacing the crystal glass ball, the first coarse grinding part and the second coarse grinding part in a wearing and surface grinding process, the processing precision and the surface grinding efficiency of the crystal glass ball are ensured, the first coarse grinding part and the second coarse grinding part can comprehensively grind the outer surface of the crystal glass ball through the fact that the rotation center of the crystal glass ball is different from the clamping center of the first coarse grinding part and the clamping center of the second coarse grinding part, a plurality of curve grooves are formed in the first coarse grinding part and the second coarse grinding part, and ground chips are rapidly scraped through the plurality of curve grooves, so that the chips are prevented from being attached to the outer surface of the crystal glass ball, and the surface grinding quality is prevented.

The conversion assembly comprises a rotary table, a base, a first one-way gear, a rotary seat, a fixed shaft, a connecting seat, two rotating shafts, a second one-way gear, a third one-way gear, two first driven gears, two connecting shafts, a second driven gear, an arc-shaped groove, two rolling pieces, three blocking rods, a first blocking rod and a second blocking rod, wherein the rotary table is arranged on the shaft seat in a rotating mode by taking the shaft seat as a center, the base is arranged above the rotary table, the first one-way gear is arranged on the base in a rotating mode, the fixed shaft is fixedly arranged in the middle of the first one-way gear, the connecting seat is sleeved on the fixed shaft, the two rotating shafts penetrate through the rotary seat and are rotatably arranged at two ends of the connecting seat, the second one-way gear and the third one-way gear are sleeved on the two rotating shafts and are meshed with the first one-way gear, the two first driven gears, The gear piece matched with the gear rod, the second driving piece used for driving the gear piece to rotate, the third driving piece used for driving the first one-way gear to rotate, the friction plate fixedly sleeved on the turntable, and the fastening piece fixedly arranged on the shaft seat and used for fastening the friction plate, the third driving piece is started to drive the first one-way gear to rotate so as to drive the second one-way gear and the third one-way gear to rotate, namely to drive the two rotating shafts to rotate, the two first driven gears arranged on the two rotating shafts to rotate, the second driven gear is respectively meshed with the first driven gear and the base to drive the second driven gear to self-transmit and revolve by taking the fixed shaft as an axis, the two connecting shafts are fixedly arranged on the turntable to drive the turntable to rotate, the fastening piece is started to fasten the friction plate, the turntable rotates to drive the shaft seat to integrally rotate, the conversion among the coarse grinding piece, the fine grinding piece and the polishing piece is completed, and, the fastening piece is closed, the shaft seat stops rotating in the rotating process of the rotary table, the second driving piece drives the gear piece to rotate for 180 degrees, the gear piece and the gear rod can be separated, the fastening piece is started to drive the shaft seat to rotate, the second driving piece drives the gear piece to rotate for 180 degrees to return, the above work is repeated, and the work of exchanging the coarse grinding piece, the fine grinding piece and the polishing piece is completed. The invention is started by the third driving piece, so that the first one-way gear rotates to drive the second one-way gear and the third one-way gear to rotate, the second one-way gear and the third one-way gear can only rotate in one direction to drive the two rotating shafts to rotate, the two first driven gears arranged on the two rotating shafts rotate, the second driven gear is respectively meshed with the first driven gear and the base to drive the second driven gear to self-transmit and revolve around the fixed shaft as an axis, the two connecting shafts are fixedly arranged on the turntable to drive the turntable to rotate, and through the operation, the rotation process of the turntable is more stable, the rotation process of the turntable is more labor-saving, the rotation angle is more accurate, the rotation among coarse grinding, fine grinding and polishing is more accurate, and the grinding surface accuracy is improved; the tightening friction plate is started through the fastening piece, the rotary table rotates to drive the shaft seat to integrally rotate, the conversion among the coarse grinding piece, the fine grinding piece and the polishing piece is completed, the fastening piece is closed after the blocking rod contacts the blocking piece, the shaft seat stops rotating in the rotating process of the rotary table, and the blocking piece is driven to rotate by 180 degrees through the second driving piece, so that the blocking piece and the blocking rod can be separated; the shaft seat can be driven to rotate in the rotating process of the turntable by starting the fastening piece; through the fixed axle in the middle of the first one-way gear and the connecting seat of cover on the fixed axle, make to rotate the in-process and rotate with the fixed axle center, avoid rotating the in-process and rock, make and rotate more smoothly and stably, through being equipped with the arc wall on the base and being located two rolling members of locating two connecting axle one ends on the arc wall respectively, improve the stationarity of carousel once more.

The invention has the following advantages: the clamping assembly realizes rapid clamping work, avoids the situation that the crystal glass cannot be ball-milled after clamping, and can also avoid damage to the crystal glass ball in the clamping process; the conversion work among coarse grinding, fine grinding and polishing is completed through the conversion assembly, and the outer surface of the crystal glass ball is subjected to comprehensive surface grinding treatment through the surface grinding structure, so that the grinding quality is high; the crystal glass ball is placed on the air inlet pipe sleeved with the rubber ball, the air in the air inlet pipe is injected into the rubber ball from the air inlet to enlarge the rubber ball, even if the outer wall of the rubber ball is attached to the inner wall of the crystal glass ball to complete the fixing work, the inner wall of the crystal glass ball is indirectly propped by the plurality of balls, the first connecting rod and the second connecting rod are driven by the sliding rail to move in opposite directions, so that the roller is pressed against the inner wall of the rubber ball to indirectly press against the inner wall of the crystal glass ball, the stress area and the extrusion force are increased, the fixing work of the crystal glass ball is firmer, meanwhile, the fixed crystal glass ball rotates by taking the axis of the air inlet pipe as the center, the surface grinding mechanism is attached to the outer wall of the crystal glass ball, the first driving piece is started to drive the air inlet pipe to rotate, thereby driving the crystal glass ball to rotate, and the surface grinding mechanism comprehensively grinds the outer wall of the crystal glass ball, thereby improving the processing efficiency and the quality.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a schematic cross-sectional structure of the present invention.

Fig. 4 is a schematic cross-sectional view of the present invention.

Figure 5 is a cross-sectional schematic view of the clamping assembly and the faceting mechanism.

Fig. 6 is a mechanism diagram of the conversion assembly.

Fig. 7 is a cross-sectional schematic view of a conversion assembly.

Detailed Description

In order to make the technical solutions of the present invention better understood, 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.

An environment-friendly crystal glass processing method comprises the following steps:

a. grinding: mixing and grinding the materials according to the weight percentage of the ingredients;

b. melting: putting the ground mixture into a heating furnace for melting;

c. casting: casting the melted liquid ingredients into a grinding tool, and annealing to obtain the environment-friendly hollow crystal glass sphere;

e. grinding the surface: adopting a surface grinding device to carry out coarse grinding, fine grinding and polishing on the outer surface of the crystal glass ball;

as shown in fig. 1-7, the surface grinding device in step e comprises a body 1, a clamping assembly 2 for clamping the crystal glass ball, a surface grinding mechanism 3 for performing rough grinding, fine grinding and polishing on the outer surface of the crystal glass ball, and a conversion assembly 4 for rotating between the rough grinding, the fine grinding and polishing in the surface grinding mechanism, wherein the clamping assembly 2 comprises an air inlet pipe 21, an air inlet 22 arranged at the upper end of the air inlet pipe, a rubber ball 23 hermetically sleeved at the upper end of the air inlet pipe, a plurality of balls 24 annularly arranged in the rubber ball at equal intervals and arranged at the upper end of the air inlet pipe, a plurality of slide rails 25 annularly arranged in the rubber ball at equal intervals and arranged on the outer wall of the air inlet pipe, a first connecting rod 26 with one end movably arranged on the slide rail, a second connecting rod 27 with one end movably arranged on the slide rail and the other end rotatably arranged on the first connecting rod, Be used for driving intake pipe pivoted first driving piece 29, quartzy glass ball is put in the cover has the intake pipe of rubber ball, gaseous follow the air inlet in the intake pipe pours into the rubber ball into, the rubber ball grow, rubber ball outer wall and the laminating of quartzy glass ball inner wall, a plurality of balls withstand the rubber ball inner wall, indirect withstand quartzy glass ball inner wall, slide rail drive head rod and second connecting rod move in opposite directions, the gyro wheel withstands rubber ball inner wall, indirect withstand quartzy glass ball inner wall, accomplish the fixed work of quartzy glass ball, the face grinding mechanism withstands quartzy glass ball outer wall, first driving piece starts to drive the intake pipe and rotates, thereby drive quartzy glass ball and rotate, the face grinding mechanism is to the comprehensive face grinding of quartzy glass ball outer wall.

The grinding mechanism 3 comprises a shaft seat 31, a rough grinding part 32, a fine grinding part 33 and a polishing part 34 which are arranged on the shaft seat in an equidistant annular distribution manner and have the same structure, the rough grinding part 32 comprises a fixed seat 321 arranged obliquely, a first pressure sensing part 322 fixedly arranged on the fixed seat, a second pressure sensing part 323 symmetrically and fixedly arranged on the fixed seat with the first pressure sensing part, a first rough grinding part 324 arranged on the first pressure sensing part and used for roughly grinding the outer surface of the crystal glass ball in a semicircular shape, a second rough grinding part 325 arranged on the second pressure sensing part and used for roughly grinding the outer surface of the crystal glass ball, and a plurality of curve grooves 326 arranged on the first rough grinding part and the second rough grinding part, the rough grinding part is positioned at the crystal glass ball, the first pressure sensing part and the second pressure sensing part are started simultaneously, the first rough grinding part and the second rough grinding part are close to the crystal glass ball and are attached to the outer surface of the crystal glass ball, and give a certain pressure to, the overall rough grinding work of the outer surface of the crystal glass ball is finished by the crystal glass ball which rotates by taking the air inlet pipe as an axis.

The conversion assembly 4 comprises a rotary table 41 which is rotatably arranged on the shaft seat by taking the shaft seat as a center, a base 42 arranged above the rotary table, a first one-way gear 43 which is positioned on the base and is rotatably arranged on the base, a rotary seat 44 which is rotatably arranged on the base, a fixed shaft 45 fixedly arranged in the middle of the first one-way gear, a connecting seat 46 sleeved on the fixed shaft, two rotating shafts 47 which penetrate through the rotary seat and are rotatably arranged at two ends of the connecting seat, a second one-way gear 48 and a third one-way gear 49 which are sleeved on the two rotating shafts and are meshed with the first one-way gear, two first driven gears 410 sleeved on the two rotating shafts, two connecting shafts 420 which penetrate through the two rotating shafts and are fixedly arranged on the rotary table, a second driven gear 430 which is respectively sleeved on the two connecting shafts and is respectively meshed with the two first driven gears, an arc-shaped groove 440 arranged on the base, two rolling pieces 450, Three gear rods 460 arranged on the shaft seat in an equidistant annular distribution, a gear 470 matched with the gear rods, a second driving part 480 for driving the gear to rotate, a third driving part 490 for driving the first one-way gear to rotate, a friction plate 4100 fixedly sleeved on the turntable, and a locking part 4200 fixedly arranged on the shaft seat for locking the friction plate, wherein the third driving part is activated to drive the first one-way gear to rotate, thereby driving the second one-way gear and the third one-way gear to rotate, namely driving the two rotating shafts to rotate, two first driven gears arranged on the two rotating shafts to rotate, the second driven gear is respectively engaged with the first driven gear and the base to drive the second driven gear to revolve around and around the fixed shaft, two connecting shafts are fixedly arranged on the turntable to drive the turntable to rotate, the locking part is activated to lock the friction plate, the turntable rotates to drive the shaft seat to rotate integrally, and the rough grinding part, the rough grinding part, The conversion between the accurate grinding piece and the polishing piece is realized, after the blocking rod is contacted with the blocking piece, the locking piece is closed, the shaft seat stops rotating in the rotating process of the turntable, the second driving piece drives the blocking piece to rotate 180 degrees, the blocking piece can be separated from the blocking rod, the locking piece is started to drive the shaft seat to rotate, the second driving piece drives the blocking piece to rotate 180 degrees to return, the above work is repeated, and the exchange work among the coarse grinding piece, the accurate grinding piece and the polishing piece is completed.