CN106041699A - Polishing mechanism of improved structure - Google Patents

Abstract

A polishing mechanism of an improved structure comprises a polishing fixing beam and at least one polishing head installed on the polishing fixing beam. Each polishing head comprises a polishing frame body rotationally installed on the polishing fixing beam, a polishing rotary part rotationally installed on the polishing frame body, a polishing motor assembly used for driving the polishing rotary part to rotate at high speed, and a polishing swing part used for driving the polishing rotary part to swing back and forth. According to the polishing mechanism of the improved structure, a polishing wheel can rotate at high speed and swing left and right, so that on the premise of the same rotation speed, the polishing force and quality can be effectively improved, the polishing time is shortened, the polishing efficiency is further improved, and the quality of products can be improved.

Description

A kind of structure improved polishing mechanism

Technical field

The present invention relates to the polissoir of a kind of workpiece, refer in particular to a kind of structure improved polishing mechanism.

Background technology

Buffing machine mainly processes with workpiece surface finish, and surface of the work can be made more smooth, finer and smoother, increases aesthetic feeling and touch Comfort level, is widely used in Modern Industry Products.For five metals, the polishing mechanical of hot-water heating part product, mainly cloth wheel is thrown Ray machine, buffing machine uses the mode that driven by motor cloth wheel rotates, makes cloth wheel surface contact with surface of the work, thus completes to throw Photoreduction process, it is simple to operate, easy to use, and manual mode of operation can be suitable for variously-shaped five metals or hot-water heating part product is thrown Light, is widely used in five metals, hot-water heating manufacturing.

Chinese utility model patent (application number: 201020145309.7) discloses a kind of buffing machine, it include casing and Being positioned at the buff wheel of casing, actuating device, angle-adjusting mechanism and electric control gear, actuating device includes motor, synchronizes wheels And power transmission shaft, synchronize wheels and be connected on motor output shaft and power transmission shaft, power transmission shaft is also associated with buff wheel, buff wheel It is connected on angle-adjusting mechanism with actuating device.

Above-mentioned buffing machine is the angle adjustment utilizing angle-adjusting mechanism to be polished wheel, makes buffing machine in use Corresponding buff wheel extension or retraction can be carried out according to the shape of workpiece.Although the suitable of buff wheel can be expanded with upper polishers By scope, but there is also following weak point during actual use: the buff wheel of polishing mechanism can only be at one Being polished action in angle rotate at high speed, polishing mode is single, thus polishing dynamics and quality can be caused by bigger Limit, be unfavorable for improving polishing character and the efficiency of product.

Summary of the invention

The present invention provides a kind of structure improved polishing mechanism, and its main purpose is to overcome the polishing of existing polishing mechanism Wheel exists that polishing mode is single, polishing dynamics and the defect of limited mass.

For solving above-mentioned technical problem, the present invention adopts the following technical scheme that

A kind of structure improved polishing mechanism, including polishing fixing beam and at least one is installed on the throwing that this polishing is fixed on beam Shaven head, described rubbing head includes the polishing support body being rotatably installed on the fixing beam of polishing, is rotatably installed on this polishing On support body polishing revolving part, drive this polishing revolving part to carry out the polishing motor assembly of high speed rotating and for driving this throwing Light revolving part carries out the polishing swing component swung back and forth.

Further, described rubbing head is provided with a plurality of, and these a plurality of rubbing heads are installed on this throwing with arranging in interval On photofixation beam.

Further, described polishing mechanism also includes the 3rd synchronization carrying out synchronous axial system for controlling each polishing support body Driving assembly, the described 3rd synchronizes to drive assembly to include one the 3rd servomotor and the 3rd servo motor output shaft transmission even One the 3rd rotation connecting shaft connect and at least two are in transmission connection and rotate the 3rd decelerator on connecting shaft, each polishing rack in the 3rd Body is rotatably installed on the outfan of the 3rd corresponding decelerator.

Further, described polishing revolving part includes a polishing assembly and is installed on the buff wheel on this polishing assembly, Described polishing reciprocating part includes that one is installed in the line slideway in described polishing rack body and a reciprocating cylinder, described Polishing assembly is installed on the sliding seat of described line slideway.

Further, the polishing rotation that described polishing assembly includes assembly framework, is rotatably installed on assembly framework Axle, at least two for supporting the polishing bearing of this polishing rotary shaft and be sheathed in this polishing rotary shaft and for driving Its second synchronous pulley being rotated, described polishing motor assembly include one be fixed on polishing support body on motor and One the first synchronous pulley being driven by this motor and being connected with described second synchronous belt pulley transmission.

Further, the piston rod end of described reciprocating cylinder and described assembly framework are fixed and described for driving Polishing assembly carries out linear reciprocating motion along described line slideway.

Further, one end of described polishing rotary shaft is installed on the one of the second synchronous pulley by polishing bearing described in one Side, the other end of described polishing rotary shaft is installed on the opposite side of described second synchronous pulley by polishing bearing another described On, and the other end end polishing rotary shaft stretches out buff wheel described in fit on after described polishing support body.

Further, also include that frame, described frame include two longerons and be connected to the crossbeam on this two longerons top, institute Stating side rail inner and be each provided with the guide rail of a pair lateral arrangement, described polishing is fixed the two ends of beam and is set up in each side rail inner respectively Guide rail on, described crossbeam is provided with for driving whole polishing to fix the elevating mechanism that beam shifts up and down.

Further, described elevating mechanism include a lateral arrangement in crossbeam medium position screw mandrel, be combined on this screw mandrel On drive nut, the 4th synchronous pulley being sheathed on this driving nut, be installed on crossbeam and for supporting this screw mandrel Bearing part, a servomotor being installed on crossbeam, the 3rd synchronous pulley being connected with the outfan of this servomotor, institute State lifting the first synchronous pulley to be connected with described 4th synchronous belt pulley transmission.

Further, described buff wheel is cloth wheel, emery wheel or nylon wheel.

Compared to the prior art, what the present invention produced has the beneficial effects that:

1, in the present invention, buff wheel also can swing while high speed rotating, thus can be in same rotational speed Under premise, effective polishing dynamics and the quality of improving, shortening polishing time, and then both improve polishing efficiency, can improve again Product quality.

2, in the present invention, on line slideway, pull polishing assembly by arranging reciprocating cylinder, and polish rotation Rotating shaft can't produce rotary impact power to reciprocating cylinder in high-speed rotation, joins thereby through machinery cleverly Close, it is ensured that buff wheel self spinning movement and the independent operating of the action that swings.

3, in the present invention, drive assembly by arranging the 3rd synchronization, can also make each polishing rack body can synchronize rotation Turn certain angle so that in the present invention, each rubbing head can carry out synchronous axial system, thus greatly widens the angle of workpiece polishing And position, it is ensured that workpiece comprehensive space curved surface operation.

4, in the present invention, the fixing beam of polishing can shift up and down, thus can increase the present invention and can process work The specification kind of part so that it is substantially meet arbitrary shape and on a large scale in the polishing of metal casting.

5, in the present invention, by arranging at least two rubbing head, workpiece is polished, so can not only improve machine Processing the quantity of workpiece in the platform unit interval, and each workpiece is in polishing process, the dynamics of polishing is also identical, thus makes Obtain each workpiece to be polished in same time and same environment, be greatly enhanced the polishing concordance of product, reduce because of burnishing stick Part deviation and the product polishing difference that causes, can reduce the difference with a collection of workpiece polishing effect, it is simple to system to a certain extent One metaplasia is produced, and this control method is simple simultaneously, easily realizes, can improve the accuracy of product polishing.

Accompanying drawing explanation

Fig. 1 is the structural representation of multistation letter out machine in embodiment.

Fig. 2 is the structural representation of rubbing head in embodiment.

Fig. 3 is the top view of Fig. 2.

Fig. 4 is Fig. 3 generalized section along A-A direction.

Fig. 5 is that in embodiment, workpiece loads and the structural representation of synchronous rotary control workbench.

Fig. 6 is the generalized section of Fig. 5.

Fig. 7 is the cooperation schematic diagram of the second decelerator and piece-holder mechanical arm in embodiment.

Fig. 8 is the generalized section of Fig. 7.

Fig. 9 is the 3rd scheme of installation synchronizing to drive assembly in embodiment.

Figure 10 is the front view of Fig. 9.

Figure 11 is the structural representation of elevating mechanism in embodiment.

Detailed description of the invention

The detailed description of the invention of the present invention is described with reference to the accompanying drawings.

With reference to Fig. 1-Figure 11.One carries high efficiency multistation letter out machine, is installed in this frame 1 including frame 1, Polishing mechanism 2, it is arranged in workpiece below this polishing mechanism 2 and loads and synchronous rotary controls workbench 3 and for controlling State the walking mechanism 4 that workpiece loads and synchronous rotary controls before and after workbench 3 is carried out or moves left and right, described polishing mechanism 2 It is installed on the rubbing head 21 that this polishing is fixed on beam 20, described workpiece with arranging in interval including polishing fixing beam 20 and four Load and synchronous rotary controls workbench 3 and includes loading fixing seat 30, four and be rotatably installed on this loading and fix seat 30 and push up The piece-holder mechanical arm 31 in face and driving for controlling the synchronization of each piece-holder mechanical arm 31 synchronous axial system and synchronous hunting Dynamic device 32.

With reference to Fig. 1-Figure 11.Each described piece-holder mechanical arm 31 includes being correspondingly arranged in a corresponding rubbing head Mechanical arm pedestal 310 immediately below 21, can be installed on carrying out transverse rotation on described mechanical arm pedestal 310 around horizontal axis Turning arm 311 and be arranged on this turning arm 311 and load fixing fixture unit for controlling workpiece, described synchronization is driven Dynamic device 32 includes carrying out longitudinal synchronization around vertical axis on fixing seat 30 loading for controlling each mechanical arm pedestal 310 The first synchronization rotated drives assembly 33 and is used for controlling each turning arm 311 on its mechanical arm pedestal 310 around trunnion axis Direction carries out the second synchronization of synchronous cross rotation and drives assembly 34, and described first synchronizes to drive assembly 33 to include one first servo Motor 330 be connected with this first servomotor 330 output shaft one first rotation connecting shaft 331 and four be in transmission connection in this First rotates on connecting shaft 331 and longitudinally rotates fortune for this first lateral rotation movement rotating connecting shaft 331 is converted into level The first dynamic decelerator 332, the outfan correspondence of each first decelerator 332 is in transmission connection in a mechanical arm pedestal 310 times Portion, described second synchronizes to drive assembly 34 to include that one second servomotor 340 is connected with this second servomotor 340 output shaft One second rotation connecting shaft 341 and four be in transmission connection and second rotate on connecting shaft 341 and for this second is rotated even in this The lateral rotation movement of axle 341 is converted into the second decelerator 342 of level longitudinal direction rotary motion, and each turning arm 311 includes arm Portion's rotary shaft 318 and be installed on the gear unit 314 in described mechanical arm pedestal 310, the output of each second decelerator 342 End correspondence is in transmission connection in the input of a corresponding gear unit 314, and the outfan correspondence of each gear unit 314 passes It is dynamically connected in a corresponding arm rotary shaft 318.

With reference to Fig. 1-Figure 11.Described second synchronize drive assembly 34 be arranged at described first synchronize drive assembly 33 just under Side, the bottom of each mechanical arm pedestal 310 is fixedly connected with a rotary sleeve 315, this rotary sleeve 315 with its immediately below the The outfan of one speed reducer 332 is fixed and is driven by it and carries out longitudinal rotation, and each gear unit 314 includes one first lateral shaft 316, one first longitudinal axis 317 and one second cylindrical screw gear 3181, the lower end of described first lateral shaft 316 sequentially passes through After described rotary sleeve the 315, first decelerator 332, the outfan with described second decelerator 342 is fixed, described first lateral shaft The upper end of 316 is provided with one first spiral bevel gear 3160, one end of described first longitudinal axis 317 be provided with one with this first spiral shell Second spiral bevel gear 3170 of rotation bevel gear 3160 engagement, the other end of described first longitudinal axis 317 is provided with one first circle Post helical gear 3171, described second cylindrical screw gear 3181 is sheathed in described arm rotary shaft 318, and this second circle The outer peripheral face of post helical gear 3181 engages with described first cylindrical screw gear 3171, and described fixture unit includes a control gas Cylinder 312 and be fixedly installed in the traversing interior axle 313 of piston rod end of this control cylinder, in described arm rotary shaft 318 Portion is provided with one for the axocoel worn for this traversing interior axle 313, and described control cylinder 312 is positioned at described arm rotary shaft 318 Side, and described traversing interior axle 313 thereon is through after this arm rotary shaft 318, with this arm rotary shaft 318 opposite side A work piece holder removably connect.

With reference to Fig. 1-Figure 11.Described mechanical arm pedestal 310 is arranged in zigzag, the rotation of workpiece clamped by described work piece holder The rotating shaft heart and first lateral shaft the 316, first decelerator the 332, second decelerator 342 are on same rotary shaft position.

With reference to Fig. 1-Figure 11.Described rubbing head 21 includes the polishing support body being rotatably installed on the fixing beam 20 of polishing 210, it is rotatably installed on the polishing revolving part 211 on this polishing support body 210, drives this polishing revolving part 211 to carry out at a high speed The polishing motor assembly 212 that rotates and for driving this polishing revolving part 211 to carry out the polishing swing component 213 swung back and forth.

With reference to Fig. 1-Figure 11.Described polishing mechanism 2 also includes that one carries out synchronous axial system for controlling each polishing support body 210 3rd synchronizes to drive assembly 23, and the described 3rd synchronizes to drive assembly 23 to include one the 3rd servomotor 230 and the 3rd servo electricity One the 3rd rotation connecting shaft 231 that machine 230 output shaft is in transmission connection and four are in transmission connection and rotate on connecting shaft 231 the in the 3rd Three decelerators 232, each polishing support body 210 is rotatably installed on the outfan of the 3rd corresponding decelerator 232.

With reference to Fig. 1-Figure 11.Described polishing revolving part 211 includes a polishing assembly 25 and is installed on this polishing assembly 25 On buff wheel 26, described polishing assembly 25 includes assembly framework 250, the polishing being rotatably installed on assembly framework 250 Rotary shaft 214, at least two is for supporting the polishing bearing 215 of this polishing rotary shaft 214 and being sheathed on this polishing rotary shaft On 214 and for driving its second synchronous pulley 216 being rotated, described polishing motor assembly 212 includes that one is solid Motor 217 and one on polishing support body 210 is driven by this motor 217 and connects with described second synchronous pulley 216 transmission The first synchronous pulley 218 connect, described polishing reciprocating part 213 includes a straight line being installed in described polishing support body 210 Guide rail 2130 and a reciprocating cylinder 2132, described polishing assembly 25 is installed on the sliding seat of described line slideway 2130 On, the piston rod end of described reciprocating cylinder is fixing with described assembly framework 250 and is used for driving described polishing assembly 25 Carrying out linear reciprocating motion along described line slideway 2130, one end of described polishing rotary shaft 214 is by polishing bearing described in one 215 sides being installed on the second synchronous pulley 216, the other end of described polishing rotary shaft 214 passes through another described polishing bearing On 215 opposite sides being installed on described second synchronous pulley 216, and the other end end polishing rotary shaft 214 is stretched out described Buff wheel 26 described in fit on after polishing support body 210.In the present embodiment, buff wheel can be cloth wheel, nylon wheel, emery wheel or Other wheel shape materials.

With reference to Fig. 1-Figure 11.Described frame 1 includes two longerons 10 and is connected to the crossbeam 11 on this two longeron 10 top, institute Stating the guide rail 101 being each provided with a pair lateral arrangement inside longeron 10, described polishing is fixed the two ends of beam 20 and is set up in respectively respectively On guide rail 101 inside longeron 10, described crossbeam 11 is provided with elevating mechanism 12, this elevating mechanism 12 include a lateral arrangement in The screw mandrel 120 of crossbeam 11 medium position, the driving nut 125 being combined on this screw mandrel 120, sheathed with this driving nut 125 on The 4th synchronous pulley 121, be installed on crossbeam 11 and be installed on crossbeam for supporting the bearing part 122, of this screw mandrel 120 Lifting the 3rd synchronous pulley 124 that servomotor 123, on 11 is connected with the outfan of this servomotor 123, described lifting 3rd synchronous pulley 124 is in transmission connection with described 4th synchronous pulley 121.

With reference to Fig. 1-Figure 11.Above-mentioned multistation letter out machine also include described walking mechanism 4 include front and back walking assembly 40 with And walking assembly carries out the left and right walking assembly 41 moved left and right before and after controlling this, described workpiece loads and synchronous rotary control Workbench 3 processed is installed on this and front and back walks on assembly 40.

With reference to Fig. 1-Figure 11.Described polishing mechanism 2 is provided with four rubbing heads 21 altogether, and described workpiece loads and synchronizes rotation Turning control workbench 3 and be altogether provided with four piece-holder mechanical arms 31, each piece-holder mechanical arm 31 is positioned at correspondingly The underface of each rubbing head 21 operating position.

Compared to the prior art, what the present invention produced has the beneficial effects that:

1, present configuration is simple, practical, by arranging four supporting four piece-holder mechanical arms 31 of rubbing head 21 Workpiece is polished, processes the quantity of workpiece in so can not only improving the board unit interval, and each workpiece is in polishing During, the angle of rotation is to synchronize, and the dynamics of polishing is also identical, so that each workpiece is in same time and same Environment is polished, and is greatly enhanced the polishing concordance of product, reduces the product polishing caused because of polishing condition deviation poor Different, the difference with a collection of workpiece polishing effect can be reduced to a certain extent, it is simple to unitized production, simultaneously this control method letter Single, easily realize, the accuracy of product polishing can be improved.

2, in the present invention, assembly 33 and second is driven to synchronize to drive assembly 34 to control respectively by arranging the first synchronization The workpiece that mechanical arm pedestal 310 self carries out rotating and turning arm 311 drives rotates, and is joined by the rotation of two kinds of different directions Close, drastically increase workpiece institute can the free angle of Spin Control, be possible not only to ensure that workpiece completes 360 degree without dead angle polishing Work, improves polishing quality, and can be suitable for the polishing of irregular workpiece, it is ensured that its quality of finish.

3, in the present invention, by the first synchronization drives assembly 33 and second synchronize to drive assembly 34 to be arranged to upper and lower cloth Put, and by the way of rotary sleeve 315 is socketed the first lateral shaft 316, ensures that two rotary motions all can independently control, Will not influence each other, and not only simplify structure but also arrangement space can be reduced, advantageously reduce complexity and the work of subsequent maintenance Make intensity.

4, in the present invention, can be by carrying out one-shot forming using the internal boring of mechanical arm pedestal 310 as independent benchmark Processing, other accessories are all using this mechanical arm pedestal 310 as basis of reference, thus the processing of many parts many benchmark can be avoided to exist Tolerance stack-up issue, be effectively reduced machinery spare and accessory parts rigging error, be conducive to improve board run stability and use Life-span.

5, in the present invention, by the first lateral shaft 316,1 first longitudinal axis 317 and one second cylindrical screw gear Between transmission mating reaction so that workpiece position of rotation and first lateral shaft the 316, first decelerator 332, second slow down Device 342 is on same rotary shaft position, so can ensure that workpiece, in rotary course, is always at home position revolving Turn, thus be greatly reduced because unfavorable factor occurs during eccentric rotary, and then the quality of workpiece polishing can be effectively improved.

6, in the present invention, the control cylinder of fixture unit touches card-bit part after promoting traversing interior axle and implements card bit motion, Thus completely clamp effect of workpiece, not only change that clamping structure is simple, operation rapidly, and arm rotary shaft is the most traversing interior axle Independently rotated, thus cylinder will not be impacted in rotary course by it, thus by mechanical engagement cleverly, it is ensured that each portion The independent operating of part.

7, in the present invention, buff wheel 26 also can swing while high speed rotating, thus can be identical On the premise of rotating speed, effective polishing dynamics and the quality of improving, shortening polishing time, and then both improve polishing efficiency, again can Enough improve product quality.

8, in the present invention, on line slideway, pull polishing assembly 25 by arranging reciprocating cylinder, and polish Rotary shaft 214 can't produce rotary impact power to reciprocating cylinder, thereby through machine cleverly in high-speed rotation Tool coordinates, it is ensured that self spinning movement of buff wheel 26 and the independent operating of the action that swings.

9, in the present invention, drive assembly 23 by arranging the 3rd synchronization, can also make each polishing support body 210 can be with Step rotates a certain angle so that the letter out machine of the present invention all can carry out synchronizing to turn in X-direction, Y direction and Z-direction Dynamic, thus greatly widen the angles and positions of workpiece polishing, it is ensured that workpiece comprehensive space curved surface operation.

10, in the present invention, polishing mechanism 2 can shift up and down, and workpiece loads and synchronous rotary control work Platform 3 then can pass through before and after walking mechanism 4 controls or move left and right, thus can increase the present invention and can process the rule of workpiece Lattice kind so that it is substantially meet arbitrary shape and on a large scale in the polishing of metal casting.

It addition, rubbing head and piece-holder mechanical arm are not limited to only arrange 4 in the present embodiment, it is also possible to be 3,5 Individual or 6.

Above are only the detailed description of the invention of the present invention, but the design concept of the present invention is not limited thereto, all utilize this Design carries out the change of unsubstantiality to the present invention, all should belong to the behavior invading scope.

Claims (10)

1. a structure improved polishing mechanism, it is characterised in that: include polishing fixing beam and at least one is installed on this throwing Rubbing head on photofixation beam, described rubbing head includes being rotatably installed on the polishing support body on the fixing beam of polishing, rotatable Be installed on this polishing support body polishing revolving part, drive this polishing revolving part carry out the polishing motor assembly of high speed rotating with And for driving this polishing revolving part to carry out the polishing swing component swung back and forth.

A kind of structure improved polishing mechanism the most as claimed in claim 1, it is characterised in that: described rubbing head is provided with plural number Individual, these a plurality of rubbing heads are installed on this polishing with arranging in interval and fix on beam.

A kind of structure improved polishing mechanism the most as claimed in claim 2, it is characterised in that: described polishing mechanism also includes a use The 3rd synchronization carrying out synchronous axial system in each polishing support body of control drives assembly, and the described 3rd synchronizes to drive assembly to include one the 3rd Servomotor and the 3rd servo motor output shaft be in transmission connection one the 3rd rotation connecting shaft and at least two be in transmission connection in 3rd rotates the 3rd decelerator on connecting shaft, and each polishing support body is rotatably installed on the defeated of the 3rd corresponding decelerator Go out end.

A kind of structure improved polishing mechanism the most as claimed in claim 3, it is characterised in that: described polishing revolving part includes a throwing Light assembly and be installed on the buff wheel on this polishing assembly, described polishing reciprocating part includes that one is installed in described polishing rack Internal line slideway and a reciprocating cylinder, described polishing assembly is installed on the sliding seat of described line slideway.

A kind of structure improved polishing mechanism the most as claimed in claim 4, it is characterised in that: described polishing assembly includes assembly frame Structure, the polishing rotary shaft being rotatably installed on assembly framework, at least two for support this polishing rotary shaft polishing bearing, And be sheathed in this polishing rotary shaft and for the second synchronous pulley driving it to be rotated, described polishing motor Assembly includes that one is fixed on the motor on polishing support body and and is driven by this motor and with described second synchronous belt pulley transmission even The first synchronous pulley connect.

A kind of structure improved polishing mechanism the most as claimed in claim 5, it is characterised in that: the piston of described reciprocating cylinder Boom end and described assembly framework are fixed and for driving described polishing assembly to carry out linear reciprocating motion along described line slideway.

A kind of structure improved polishing mechanism the most as claimed in claim 6, it is characterised in that: one end of described polishing rotary shaft leads to Crossing polishing bearing described in and be installed on the side of the second synchronous pulley, the other end of described polishing rotary shaft passes through another described throwing Light bearing is installed on the opposite side of described second synchronous pulley, and described polishing is stretched out in the other end end polishing rotary shaft Buff wheel described in fit on after support body.

A kind of structure improved polishing mechanism the most as claimed in claim 1, it is characterised in that: also include frame, described frame bag Including two longerons and be connected to the crossbeam on this two longerons top, described side rail inner is each provided with the guide rail of a pair lateral arrangement, Described polishing is fixed the two ends of beam and is set up in respectively on the guide rail of each side rail inner, and described crossbeam is provided with for driving whole throwing The elevating mechanism that photofixation beam shifts up and down.

A kind of structure improved polishing mechanism the most as claimed in claim 8, it is characterised in that: described elevating mechanism includes that one is horizontal Be arranged in crossbeam medium position screw mandrel, be combined on this screw mandrel drive nut, be sheathed on this driving nut the 4th with Step belt wheel, be installed on crossbeam and for support the bearing part of this screw mandrel, a servomotor being installed on crossbeam, one with should The 3rd synchronous pulley that the outfan of servomotor connects, described lifting the first synchronous pulley and described 4th synchronous belt pulley transmission Connect.

A kind of structure improved polishing mechanism the most as claimed in claim 4, it is characterised in that: described buff wheel is cloth wheel, emery wheel Or nylon wheel.