CN108500795A - An automatic end grinding machine for shaft parts of new energy vehicles - Google Patents

Abstract

The invention relates to the field of new energy automobile part processing, in particular to an automatic end grinding machine for shaft parts, which comprises a frame, a feeding mechanism, an upper material box and a lower material box, the automatic end part grinding machine for the shaft parts comprises a grinding mechanism and a jacking mechanism, wherein the feeding mechanism comprises a chain and a plurality of bearing blocks, a support column is vertically arranged on a rack, the grinding mechanism comprises a grinding abrasive belt and a first motor used for driving the grinding abrasive belt to rotate, the jacking mechanism comprises a jacking cylinder, a linkage rod and a lifting frame connected with the output end of the jacking cylinder, a positioning plate used for being matched with the lifting frame to clamp the shaft parts is arranged on the side wall of the support column, and a clearance hole for the support column and the jacking mechanism to penetrate through is formed in the table top of the rack.

Description

An automatic end grinding machine for shaft parts of new energy vehicles

technical field

The invention relates to the field of processing parts of new energy automobiles, in particular to an automatic end grinding machine for shaft parts.

Background technique

New energy vehicles refer to the use of unconventional vehicle fuels as power sources (or the use of conventional vehicle fuels and new vehicle power devices), and the comprehensive vehicle power control and advanced technology in driving, the formation of advanced technical principles, with For automobiles with new technology and new structure, shaft parts play a very important role in the spare parts of automobiles, and the demand is also very large. It is mainly used to support transmission parts, transmit torque and bear load, according to the structural form of shaft parts Different, generally can be divided into three types: optical shaft, stepped shaft and special-shaped shaft. They are used to support transmission parts such as gears and pulleys in the machine to transmit torque or motion. Shaft parts are rotating parts whose length is greater than The diameter is generally composed of the outer cylindrical surface, conical surface, inner hole, thread and corresponding end surface of the concentric shaft. According to the different structural shapes, shaft parts can be divided into optical shafts, stepped shafts, hollow shafts and crankshafts. During the production of shaft parts, it is necessary to grind the ends of the shaft parts to remove the burrs on the edges and make the end faces smooth. This process is usually done manually, which is time-consuming, laborious and inefficient, so it is necessary Design a device that can automatically grind the ends of shaft parts.

Contents of the invention

The purpose of the present invention is to provide an automatic end grinding machine for shaft parts to address the deficiencies in the prior art.

In order to solve the above problems, the present invention provides the following technical solutions: an automatic end grinding machine for shaft parts, including a frame, a feeding mechanism, a feeding box, a feeding box, a grinding mechanism and a jacking mechanism, a feeding box, The feeding mechanism and the unloading box are arranged in a straight line and horizontally above the frame. The feeding mechanism includes a chain and several supporting blocks. All supporting blocks are evenly distributed on the outside of the chain. Each supporting block is moving The center passes through the upper material box and the lower material box in turn. A support column is vertically arranged on the frame, and the upper and lower ends of the support column extend to the upper and lower sides of the frame respectively. The grinding mechanism includes a grinding belt and a belt for driving the grinding sand. With a rotating first motor, the abrasive belt is set vertically on the top of the frame, the first motor is set on the lower end of the frame, and the jacking mechanism includes a jacking cylinder, a linkage rod and a jacking cylinder connected to the output end The lifting frame, the linkage rod is a zigzag structure, the jacking cylinder is located below the frame, the lifting frame is located above the frame and the chain is located inside the lifting frame, the upper end of the linkage rod is located above the frame and is used for horizontal promotion and lifting The lower end of the linkage rod is located below the frame and is in contact with the output end of the jacking cylinder. The middle part of the linkage rod is hingedly arranged on the table of the frame. The positioning plate of the parts, and the table top of the frame are provided with avoidance holes for the support column and the jacking mechanism to pass through;

The sanding belts are connected end to end and a roller is provided on the inner side of the upper and lower ends. Both sides of the sanding belt are provided with strip-shaped fixing plates for fixing the rollers. The two strip-shaped fixing plates are in a vertical state and are horizontally spaced apart. Setting, the axis directions of the two rollers are parallel to each other and perpendicular to the plane where the strip-shaped fixed plate is located, the two ends of the two rollers are respectively connected to the upper and lower ends of the two strip-shaped fixed plates that can rotate, and the same of the two strip-shaped fixed plates Both sides are fixedly connected with the side wall of the support column, there is a gap between the abrasive belt and the support column, and a strip-shaped interference plate is arranged between the two strip-shaped fixed plates, and the strip-shaped interference plate is arranged in a vertical state. Between the two strip-shaped fixed plates and the strip-shaped interference plate is fixedly connected with the inner sides of the two strip-shaped fixed plates. Shaped interference plate fitting settings.

Preferably, the first motor is fixedly installed on the lower half of the support column, and its output shaft is connected with a main synchronous wheel, and a secondary synchronous wheel is arranged on the side of the lower end of a bar-shaped fixed plate, and the secondary synchronous wheel The center is fixedly connected with the center of the adjacent roller, and the main synchronous wheel and the auxiliary synchronous wheel are connected through a synchronous belt drive; the first motor drives the main synchronous wheel to rotate, and the main synchronous wheel drives the auxiliary synchronous wheel to rotate through the synchronous belt, so that the The roller fixedly connected to the auxiliary synchronous wheel rotates, and then drives the grinding belt to rotate.

Beneficial effects: the automatic grinding machine for the end of shaft parts of the present invention can automatically take, grind and unload shaft parts, greatly reducing labor costs and effectively improving production efficiency.

Description of drawings

Fig. 1 shows a three-dimensional structure schematic diagram one of the present invention;

Fig. 2 shows the three-dimensional structural schematic diagram II of the present invention;

Fig. 3 shows the left side view of the present invention;

Figure 4 shows a front view of the present invention;

Figure 5 shows a top view of the present invention;

Fig. 6 shows the exploded schematic view of the three-dimensional structure of the present invention;

Fig. 7 shows the exploded schematic diagram of partial three-dimensional structure of the present invention;

Figure 8 shows a schematic diagram of the three-dimensional structure of the supporting block;

Figure 9 shows a schematic diagram of the three-dimensional structure of the jacking mechanism;

Figure 10 is a schematic diagram of the three-dimensional structure of the lifting frame;

Explanation of reference signs: frame 1, loading box 2, loading box 3, chain 4, supporting block 5, supporting column 6, abrasive belt 7, first motor 8, jacking cylinder 9, linkage rod 10, Lifting frame 11, positioning plate 12, escape hole 13, roller 14, strip-shaped fixed plate 15, strip-shaped interference plate 16, main synchronous wheel 17, auxiliary synchronous wheel 18, synchronous belt 19, support frame 20, second motor 21, Sprocket 22, support shaft 23, support bar 24, V-shaped notch 25, supporting plate 26, bar-shaped notch 27, vertical slide plate 28, connecting column 29, first horizontal plate 30, first slide block 31, second level Plate 32, first sliding bar 33, third horizontal plate 34, second sliding block 35, second sliding bar 36, L-shaped support plate 37, hinge shaft 38, horizontal shaft 39, wedge 40, movable pulley 41, first Fixed pulley 42, stop block 43, slide table 44, the second fixed pulley 45, mounting frame 46.

Detailed ways

Below in conjunction with accompanying drawing and embodiment of description, specific embodiment of the present invention is described in further detail:

Referring to Figures 1 to 10, an automatic grinding machine for the end of shaft parts includes a frame 1, a feeding mechanism, an upper material box 2, an lower material box 3, a grinding mechanism and a jacking mechanism.

The upper material box 2, the feeding mechanism and the lower material box 3 are arranged in a straight line and horizontally above the frame 1. The feeding mechanism includes a chain 4 and several supporting blocks 5, and all supporting blocks 5 are evenly distributed on the chain 4 Each supporting block 5 passes through the upper material box 2 and the lower material box 3 in turn during the movement; a support column 6 is vertically arranged on the frame 1, and the upper and lower ends of the support column 6 extend to the machine frame respectively. The upper and lower sides of the frame 1; the grinding mechanism includes a grinding belt 7 and a first motor 8 for driving the grinding belt 7 to rotate, the grinding belt 7 is vertically arranged on the table top of the frame 1, and the first motor 8 is set At the lower end of the frame 1; the jacking mechanism includes a jacking cylinder 9, a linkage rod 10 and a lifting frame 11 connected to the output end of the jacking cylinder 9, the linkage rod 10 is a zigzag structure, and the jacking cylinder 9 is located Below, the lifting frame 11 is located above the frame 1 and the chain 4 is positioned at the inside of the lifting frame 11, the upper end of the linkage rod 10 is positioned above the frame 1 and is used to push the lifting frame 11 horizontally, and the lower end of the linkage rod 10 is located on the frame 1. Below and in contact with the output end of the jacking cylinder 9, the middle part of the linkage rod 10 is hingedly arranged on the table top of the frame 1, and the side wall of the support column 6 is provided with a positioning plate for clamping shaft parts in cooperation with the lifting frame 11 12. An avoidance hole 13 is provided on the table of the frame 1 for the support column 6 and the jacking mechanism to pass through.

Described abrasive belt 7 is connected end to end and a roller 14 is arranged on the inner side of its upper and lower ends, and both sides of abrasive belt 7 are provided with a bar-shaped fixing plate 15 for fixing the roller 14, and the two bar-shaped fixing plates 15 are all in the shape of In a vertical state and horizontally spaced apart, the axis directions of the two rollers 14 are parallel to each other and are perpendicular to the plane where the bar-shaped fixing plate 15 is located. end connection, the same side of the two strip-shaped fixing plates 15 are all fixedly connected with the side wall of the support column 6, there is a gap between the polishing belt 7 and the support column 6, and a gap is set between the two strip-shaped fixing plates 15 There is a strip-shaped interference plate 16, and the strip-shaped interference plate 16 is vertically arranged between the two strip-shaped fixed plates 15 and the strip-shaped interference plate 16 is fixedly connected with the inner sides of the two strip-shaped fixed plates 15. 16 is located at one end of the inner side of the abrasive belt 7 away from the support column 6, and the inner side of the abrasive belt 7 on this side is fitted with the bar-shaped collision plate 16, and the first motor 8 drives the lower roller 14 to rotate, and the roller 14 drives the abrasive belt 7 is rotated so as to grind the ends of the shaft parts that are subsequently in contact with it. The bar-shaped interference plate 16 ensures that when the shaft parts are in contact with the grinding belt 7, sufficient support can be provided for the grinding belt 7 to facilitate stable alignment. Grinding the ends of shaft parts.

The first motor 8 is fixedly mounted on the lower half of the support column 6, and its output shaft is connected with a main synchronous wheel 17, wherein a secondary synchronous wheel 18 is arranged on the side of the lower end of a bar-shaped fixed plate 15, the secondary synchronous The center of the wheel 18 is fixedly connected to the center of the adjacent roller 14. The main synchronous wheel 17 and the secondary synchronous wheel 18 are connected by a synchronous belt 19. The first motor 8 drives the main synchronous wheel 17 to rotate, and the main synchronous wheel 17 is synchronized by The belt 19 drives the auxiliary synchronous wheel 18 to rotate, thereby making the roller 14 fixedly connected with the auxiliary synchronous wheel 18 rotate, and then drives the grinding belt 7 to rotate.

Described feeding mechanism also comprises the support frame 20 that is used to support chain 4, loading box 2 and discharge box 3, and support frame 20 is the top that vertically sets frame 1, and the bottom of support frame 20 and the top of frame 1 Fixedly connected, the chain 4, the upper material box 2 and the lower material box 3 are all located on the same side of the support frame 20, and the other side of the support frame 20 is provided with a second motor 21 for driving the chain 4 to rotate, and the chain 4 is horizontally arranged and Both ends of its inner side are provided with a sprocket 22 for driving the chain 4 to rotate, the output shaft of the second motor 21 passes through the support frame 20 and is fixedly connected with one of the sprocket wheels 22, and the side wall of the support frame 20 is provided with for another A sprocket wheel 22 is rotatably connected to the support shaft 23, and the side wall of the support frame 20 is also horizontally provided with a support bar 24 for supporting the middle part of the chain 4. The second motor 21 drives one of the sprocket wheels 22 to rotate, so that the sprocket wheel 22 drives The chain 4 rotates back and forth, so that the supporting block 5 fixed on the chain 4 rotates with the rotation of the chain 4, and the supporting block 5 takes out the shaft parts located in the feeding box 2 during the process of passing through the feeding box 2 , when the supporting block 5 moves to the top of the lifting frame 11 with the shaft parts, the chain 4 stops rotating. After the grinding is completed, the chain 4 moves the polished shaft parts to the discharge box 3. During the process of unloading the material box 3, the polished shaft parts are placed in the unloading box 3.

The upper material box 2 and the lower material box 3 are respectively arranged at both ends of the chain 4 in the horizontal direction, and all supporting blocks 5 are fixedly connected with the chain 4 and can move along with the rotation of the chain 4, each supporting The top of the block 5 is provided with a V-shaped notch 25 for supporting shaft parts, and one side of the supporting block 5 along the clockwise direction of the chain 4 is fixedly connected with a supporting plate 26 for taking materials from the upper material box 2, The height of supporting plate 26 is greater than the height of supporting block 5, and one end of upper material box 2 and lower material box 3 near chain 4 is all provided with the strip gap 27 that is used for supporting plate 26 in moving process, and strip gap 27 The width is greater than the width of the supporting plate 26, the upper material box 2 is inclined and its low end is set close to the chain 4, the lower material box 3 is inclined and its high end is set close to the chain 4, and the supporting block 5 rotates from the top with the rotation of the chain 4 And in the process of passing through the upper material box 2, the supporting plate 26 passes through the strip gap 27 from bottom to top, so that a shaft part at the bottom in the upper material box 2 is taken out, and the shaft part after taking out goes along the The supporting plate 26 falls into the V-shaped notch 25 on the top of the supporting block 5 and moves along with the movement of the chain 4. When it moves and passes the blanking box 3, the shaft parts on the supporting block 5 fall into the blanking In the box 3, the supporting plate 26 passes through the strip gap 27 on the lower box 3, and continues to move towards the upper box 2 along with the rotation of the chain 4 and is ready to take out the next shaft part.

The jacking cylinder 9 is arranged below the frame 1 through a vertical mounting frame 46, the jacking cylinder 9 is fixedly arranged on the bottom of the mounting frame 46 and its output shaft is vertically upward, and the inside of the mounting frame 46 is provided with a The vertical slide plate 28 that can slide upwards, the outer side of the vertical slide plate 28 is fixedly provided with a vertical connecting column 29, the output shaft of the jacking cylinder 9 is fixedly connected with the bottom of the connecting column 29, the top of the connecting column 29 is connected with the vertical The top of slide plate 28 is flush, and the top of vertical slide plate 28 is connected with first horizontal plate 30, and the top of first horizontal plate 30 is provided with two first slide blocks 31, and the top of first horizontal plate 30 is provided with a second Horizontal plate 32, the bottom of the second horizontal plate 32 is provided with two first slide bars 33 that slide with the first slide block 31, and the top of the second horizontal plate 32 is provided with a third horizontal plate 34, the second horizontal plate The top of 32 is provided with two second sliders 35, the bottom of the third horizontal plate 34 is provided with two second sliders 36 that cooperate with the second sliders 35, and the lifting frame 11 is fixedly arranged on the top of the third slider, The length direction of the first slide bar 33 is perpendicular to the length direction of the second slide bar 36, and the length direction of the first slide bar 33 is parallel to the length direction of the chain 4. When the supporting block 5 drives the shaft parts to move to the lifting frame 11 When it is directly above the lifting frame 11, the second motor 21 stops driving the chain 4 to rotate, and the photoelectric switch can be used to detect whether the shaft parts have reached the directly above the lifting frame 11. At this time, the lifting frame 11 rises, and the shaft on the supporting block 5 The parts are lifted up, and the shaft parts are fixed with the upper positioning plate 12. During the process of lifting the shaft parts by the lifting frame 11, the linkage rod 10 pushes the third horizontal plate 34 towards the direction of the sanding belt 7 , when the end of the shaft part is in contact with the grinding belt 7 and the shaft part is pressed by the positioning plate 12 above, so that the grinding belt 7 grinds the end of the shaft part.

An L-shaped support plate 37 is fixedly arranged on the upper half of the side wall of the mounting frame 46, and one end of the L-shaped support plate 37 away from the mounting frame 46 is fixedly connected with a hinge shaft 38 for the middle part of the linkage rod 10 to be hinged. One end of the top of the horizontal plate 34 is provided with a horizontal shaft 39, and the top of the linkage rod 10 is rotatably sleeved on the horizontal shaft 39, and the bottom outer side of the connecting column 29 is fixedly connected with a wedge 40 with an inclined plane. The bottom is provided with a movable pulley 41 that can rotate, and the pulley and the inclined surface of the wedge 40 are attached to each other. A torsion spring for resetting the linkage rod 10 is provided at the joint between the linkage rod 10 and the hinge shaft 38, and the jacking cylinder 9 stretches out to drive the connecting column. When 29 rises, the wedge 40 also rises, so that the slope of the wedge 40 pushes the lower end of the linkage rod 10 outward, and because the middle part of the linkage rod 10 can rotate, the top of the linkage rod 10 faces the abrasive belt. 7, thereby driving the third horizontal plate 34 to move towards the direction of the abrasive belt 7 through the horizontal shaft 39, and then the third horizontal plate 34 drives the lifting frame 11 above it close to the abrasive belt 7, so that the raised frame 11. The raised shaft parts move towards the grinding belt 7 while rising, and are finally fixed by the positioning plate 12 above, so that the grinding belt 7 can stably grind its end. Under the elastic force of the spring, the linkage rod 10 is restored to its original position, thereby driving the horizontal shaft 39 to restore the lifting frame 11 to its original position.

The lifting frame 11 is a U-shaped plate structure arranged vertically, and the tops of the two side walls of the lifting frame 11 are provided with two first fixed pulleys 42 for supporting shaft parts, and the tops of all the first fixed pulleys 42 are They are all higher than the top of the lifting frame 11, and the outside of the top of the lifting frame 11 is also provided with a limit block 43 used to interfere with the end of the shaft parts. The U-shaped plate structure ensures that the chain will not be touched during the process of rising and translating. 4. During the rising process of the lifting frame 11, the shaft parts are located between the two fixed pulleys, which ensures that the shaft parts are lifted stably and will not fall off.

The positioning plate 12 is located directly above the lifting plate, and its bottom is provided with a slide table 44 that can slide along the lengthwise direction of the chain 4, and the bottom sides of the slide table 44 are provided with two second fixed pulleys 45, the positioning plate Four second fixed pulleys 45 below 12 and the four fixed pulleys on the top of the lifting plate are in contact with the raised shaft parts, thereby ensuring that the shaft parts will not fall off after being clamped, and the limit outside the top of the lifting plate The bit block 43 is in conflict with the end of the shaft parts, so that the other end of the shaft parts can contact the grinding abrasive belt 7 for grinding.

Working principle: when working, the first motor 8 drives the main synchronous wheel 17 to rotate, and the main synchronous wheel 17 drives the auxiliary synchronous wheel 18 to rotate through the synchronous belt 19, so that the roller 14 fixedly connected with the auxiliary synchronous wheel 18 rotates, and then drives the abrasive belt 7 is rotated so as to grind the ends of the shaft parts that are subsequently in contact with it. The bar-shaped interference plate 16 ensures that when the shaft parts are in contact with the grinding belt 7, sufficient support can be provided for the grinding belt 7 to facilitate stable alignment. The end of the shaft part is polished, and the second motor 21 drives one of the sprockets 22 to rotate, so that the sprocket 22 drives the chain 4 to rotate reciprocally, so that the supporting block 5 fixed on the chain 4 rotates with the rotation of the chain 4, The supporting block 5 takes out the shaft parts located in the feeding box 2 in the process of passing through the feeding box 2. When the supporting block 5 moves to the top of the lifting frame 11 with the shaft parts, the chain 4 stops rotating. After the grinding is completed, the chain 4 moves the polished shaft parts to the lower material box 3. During the process of passing through the lower material box 3, the polished shaft parts are placed in the lower material box 3, and the supporting block 5 As the chain 4 rotates and passes through the feeding box 2 from top to bottom, the supporting plate 26 passes through the strip-shaped gap 27 from bottom to top, thereby taking out a shaft part at the bottom of the feeding box 2 , the shaft parts after taking out fall into the V-shaped notch 25 on the top of the supporting block 5 along the supporting plate 26, and move along with the movement of the chain 4, when moving and passing the blanking box 3, the supporting block 5 The upper shaft parts fall into the lower material box 3, while the pallet 26 passes through the strip-shaped gap 27 on the lower material box 3, and continues to move toward the upper material box 2 with the rotation of the chain 4 and is ready to be taken out. For the next shaft part, when the supporting block 5 drives the shaft part to move directly above the lifting frame 11, the second motor 21 stops driving the chain 4 to rotate, and when the jacking cylinder 9 stretches out to drive the connecting column 29 to rise, the wedge Block 40 also rises thereupon, thereby the slope of wedge block 40 pushes the lower end of linkage rod 10 outwards, and because the middle part of linkage rod 10 can rotate, so the top of linkage rod 10 moves towards the direction of grinding abrasive belt 7, thereby Drive the third horizontal plate 34 to move towards the direction of the abrasive belt 7 through the horizontal shaft 39, and then the third horizontal plate 34 drives the lifting frame 11 above it close to the abrasive belt 7, so that the shafts raised by the lifting frame 11 The parts move towards the grinding belt 7 while rising, and are finally fixed by the positioning plate 12 above, so that the grinding belt 7 can grind its end stably.

Claims (2)

1. a kind of end automatic sander of axial workpiece, it is characterised in that：Including rack（1）, feed mechanism, feeding box（2）、 Lower feed box（3）, workpiece polishing mechanism and lifting body, feeding box（2）, feed mechanism and lower feed box（3）Linear horizontally arranged setting In rack（1）Surface, feed mechanism includes chain（4）With several support blocks（5）, all support blocks（5）At equal intervals It is even to be distributed in chain（4）Outside, each support block（5）Pass through feeding box successively in moving process（2）And lower feed box （3）, rack（1）On be vertically arranged there are one support column（6）, and support column（6）Upper and lower side extend respectively to rack（1）'s Upper and lower, workpiece polishing mechanism include polishing abrasive band（7）With for drive polish abrasive band（7）The first motor of rotation（8）, abrasive band of polishing （7）State in a vertical shape is arranged in rack（1）Table top upper end, first motor（8）It is arranged in rack（1）Lower end, lifting body Including jacking cylinder（9）, interlocking bar（10）With with jacking cylinder（9）The lifting frame of output end connection（11）, interlocking bar（10）For Zigzag structure, jacking cylinder（9）Positioned at rack（1）Lower section, lifting frame（11）Positioned at rack（1）Top and chain （4）Positioned at lifting frame（11）Inside, interlocking bar（10）Upper end be located at rack（1）Top and for Level Promoting be lifted Frame（11）, interlocking bar（10）Lower end be located at rack（1）Lower section and and jacking cylinder（9）Output end in contact, interlocking bar （10）Middle part be hingedly arranged in rack（1）Table top on, support column（6）Side wall on be provided with for coordinating lifting frame（11） Clamp the positioning plate of axial workpiece（12）, rack（1）Table top on be provided with for support column（6）The evacuation passed through with lifting body Hole（13）；

The polishing abrasive band（7）It joins end to end and is respectively provided on the inside of its upper and lower side there are one idler wheel（14）, abrasive band of polishing（7） Both sides be both provided with for fixed idler whell（14）Bar shaped fixed plate（15）, two bar shaped fixed plates（15）State in a vertical shape And it is horizontally spaced about, two idler wheels（14）Axis direction it is parallel to each other and be each perpendicular to bar shaped fixed plate（15）Place Plane, two idler wheels（14）Both ends be able to rotation with two bar shaped fixed plates（15）Upper and lower side connection, two items Shape fixed plate（15）The same side and support column（6）Side wall be fixedly connected, polish abrasive band（7）With support column（6）Between stay There are gap setting, two bar shaped fixed plates（15）Between be additionally provided with bar shaped contradict plate（16）, bar shaped conflict plate（16）In vertical State is arranged in two bar shaped fixed plates（15）Between and bar shaped contradict plate（16）With two bar shaped fixed plates（15）Inside It is fixedly connected, bar shaped contradicts plate（16）Positioned at polishing abrasive band（7）Inside is far from support column（6）One end, and the polishing of the side Abrasive band（7）Inside contradicts plate with bar shaped（16）Fitting setting.

2. a kind of end automatic sander of axial workpiece according to claim 1, it is characterised in that：The first motor （8）It is fixedly mounted on support column（6）Lower half, and the connection of its output shaft is there are one main synchronizing wheel（17）, one of item Shape fixed plate（15）The setting of lower end side there are one secondary synchronizing wheels（18）, secondary synchronizing wheel（18）Center at close idler wheel （14）It is fixedly connected at center, main synchronizing wheel（17）With secondary synchronizing wheel（18）Between pass through synchronous belt（19）It is sequentially connected；First Motor（8）Drive main synchronizing wheel（17）Rotation, main synchronizing wheel（17）Pass through synchronous belt（19）Drive secondary synchronizing wheel（18）Rotation, from And make and secondary synchronizing wheel（18）The idler wheel being fixedly connected（14）Rotation, and then drive polishing abrasive band（7）Rotation.