CN111390676B

CN111390676B - Clamping device for polishing automobile hub and using method thereof

Info

Publication number: CN111390676B
Application number: CN202010361097.4A
Authority: CN
Inventors: 汪江池; 郑岳
Original assignee: Ruian Xinwei Auto Parts Co ltd
Current assignee: Xiangfen County Rongshida Machinery Manufacturing Co.,Ltd.
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-03-09
Anticipated expiration: 2040-04-30
Also published as: CN111390676A

Abstract

The invention relates to the field of automobile hub processing equipment, in particular to a clamping device for polishing an automobile hub and a using method thereof. The clamping device for polishing the automobile hub and the using method thereof avoid the change of the position of the hub after secondary clamping, do not need to position polishing equipment again, play a role in centering the hub, and improve the polishing quality and the operation safety.

Description

Clamping device for polishing automobile hub and using method thereof

Technical Field

The invention belongs to the field of automobile hub machining equipment, and particularly relates to a clamping device for polishing an automobile hub and a using method thereof.

Background

The hub is a cylindrical metal part which is used for supporting a tire by taking an axis as a center in the tire of an automobile, the surface of the hub needs to be polished and polished after production, when the circumferential surface and the outer side end surface of the hub are polished, the hub needs to be clamped twice, and the hub is limited and fixed in the horizontal direction and the axial direction, so that the hub is prevented from shaking during polishing.

Disclosure of Invention

The invention aims to provide a clamping device for polishing an automobile hub and a using method thereof, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a clamping device for automobile wheel hub is polished and is used for, the on-line screen storage device comprises a base, be provided with the platform of polishing that is used for the wheel hub centre gripping on the base, the dead axle rotates on the base and is connected with the carousel, the periphery wall of carousel is fixed with the ring gear, be fixed with motor one and portal frame on the base, the output shaft of motor one is fixed with gear one, and gear one is connected with the ring gear meshing, be fixed with branch on the carousel, the platform of polishing is fixed in the upper end of branch, the upper surface of the platform of polishing is provided with presss from both sides formula centering mechanism to the wheel hub inboard clamp and fixes, the lower surface of the platform of polishing is provided with presss from both sides formula centering mechanism to the wheel hub outside clamp and fixes, interior clamp formula centering mechanism can be connected with outer clamp formula centering mechanism transmission, the crossbeam middle part of portal frame is.

Preferably, the inner clamping type centering mechanism comprises a third sleeve which is rotatably connected to the center of the upper surface of the polishing table through a fixed shaft, a third gear is fixed to the upper end of the third sleeve, the polishing table, the third sleeve and the third gear share the central axis, at least three stand columns are fixed to the upper surface of the polishing table, the stand columns are arranged on the outer circumferential side of the third gear along the circumferential direction at equal intervals, a chain wheel is fixed to the upper end of each stand column, an ejector rod which can be in abutting-buckling contact with the circumferential wall of the inner wall of the hub is fixed to each chain wheel, each chain wheel is connected through chain transmission, a rack is fixed to each chain, the rack is connected to the polishing table in a sliding mode, and the rack is connected with the.

Preferably, interior clamp formula centering mechanism is still including fixing cylinder and the second motor on the carousel upper surface, and the cylinder is vertical upwards to be set up to be located the center department of carousel, the piston rod upper end of cylinder is fixed with sleeve one, and the inside dead axle of sleeve rotates and is connected with axostylus axostyle one, and the upper end of axostylus axostyle one is fixed with the tooth post, and the upper end of tooth post is fixed with axostylus axostyle two, and the upper end of axostylus axostyle two is fixed with many arriss pole, and the output shaft end of motor two is.

Preferably, axostylus axostyle one is the T shape, and sleeve one inside offer with the recess of an axostylus axostyle looks adaptation, axostylus axostyle one, tooth post, axostylus axostyle two and many arriss pole sharing the central axis, and the central axis of many arriss pole coincides with the central axis of the platform of polishing, and many arriss pole passes and sets up the hole of dodging of platform center department of polishing, and sleeve three and gear three central axis department offer with the through-hole of many arriss pole looks adaptation, many arriss pole can slide from top to bottom in the through-.

Preferably, the outer formula centering mechanism that presss from both sides includes that the dead axle rotates to be connected at the worm I of grinding platform lower surface center, and the worm I wears to overlap on the polygon pole, and the polygon pole can slide from top to bottom in worm I inside, and the lower surface dead axle of grinding platform rotates and is connected with at least three turbine I, and is a plurality of turbine I sets up in the peripheral wall side of worm I along circumference trend equidistance, and worm I is connected with the meshing of turbine I.

Preferably, outer formula centering mechanism that presss from both sides still includes a plurality of jibs of fixing at the platform lower surface of polishing, and jib and a turbine one-to-one, and the lower extreme dead axle of jib rotates and connects the nose bar, and the nose bar is fixed on the arm lock, and the one end of arm lock is fixed with the pressure head, and the pressure head is the setting of J font with the arm lock, and the other end of arm lock articulates there is connecting rod one, and the articulated connecting rod two of one end that the arm lock was kept away from to connecting rod one, and the one end fixed connection that connecting rod one was kept away.

Preferably, hold-down mechanism is including fixing the roof at portal frame crossbeam middle part, and the middle part dead axle of roof rotates and is connected with worm two, and the lower extreme of worm two is fixed with sleeve three, and sets up the recess with many arriss pole cross section looks adaptation in the sleeve three, and the upper end of many arriss pole can be pegged graft in the recess, the roof upper surface dead axle rotates and is connected with two at least turbines two, and is a plurality of turbine two sets up the peripheral wall side at worm two along circumference trend equidistance, is fixed with the rocking arm on the turbine two, and the rocking arm is kept away from the tip of turbine two and has been seted up bar groove one.

Preferably, the pressing mechanism further comprises a plurality of first sliding rods in one-to-one correspondence with the turbines, the first sliding rods are arranged in the vertical direction and are connected to the top plate in a sliding mode, the first sliding rods are fixedly provided with first pin rods which are inserted into the first strip-shaped grooves and can slide in the first strip-shaped grooves, the lower ends of the first sliding rods are located on the lower surface of the top plate, the lower ends of the first sliding rods are in transmission connection with the first scissors rod group, the two upper fixed shafts of the first scissors rod group are rotatably connected to the bottom surface of the top plate, the two middle portions of the two connecting rods in the first scissors rod group are provided with second strip-shaped grooves, the lower ends of the first sliding rods are fixedly provided with second pin rods, and the second pin rods are inserted into the second strip-shaped grooves and can slide in.

Preferably, the pressing mechanism further comprises a ring plate and a pressing plate, a second sliding rod corresponding to the first sliding rod is fixed on the upper surface of the ring plate, two lower ends of the first shearing fork rod group are rotatably connected with two upper end fixed shafts of the second shearing fork rod group, two lower ends of the second shearing fork rod group are rotatably connected with sliding blocks in a fixed shaft mode, two sliding blocks at the lower end of the same second shearing fork rod group are slidably connected onto the corresponding second sliding rod, the lower surface of the ring plate is rotatably connected with the pressing plate in a fixed shaft mode through a turntable bearing, and the pressing plate, the ring plate and the polishing table share the central axis.

In addition, the application also provides a using method of the clamping device for polishing the automobile hub, which comprises the following steps:

the method comprises the following steps: when the outer circumferential wall of the hub is polished, the hub is arranged on a polishing platform and is fixed through an inner clamping type centering mechanism and a pressing mechanism;

step two: when the end face of the hub is polished, the hub is fixed through the inner clamp type centering mechanism and the outer clamp type centering mechanism;

step three: and after the end face of the hub is polished, the fixing of the inner clamping type centering mechanism and the outer clamping type centering mechanism to the hub is released, and the polished hub is taken down from the polishing table.

Compared with the prior art, the invention has the beneficial effects that:

according to the hub polishing device, the hub is fixed in the horizontal direction and the vertical direction simultaneously through the inner clamping type centering mechanism and the pressing mechanism, so that the phenomenon that the hub jumps in the vertical direction when the outer circumferential wall of the hub is polished is avoided, the outward force applied to the hub by the inner clamping type centering mechanism is offset with the force applied to the inside of the hub by polishing equipment during polishing operation, the deformation of the hub during the polishing operation of the outer circumference of the hub is avoided, and the hub polishing quality and the operation safety are improved.

According to the invention, the inner clamping type centering mechanism and the outer clamping type centering mechanism are used for fixing the hub in the horizontal direction and the vertical direction simultaneously, so that the phenomenon that the hub jumps in the vertical direction when the end face of the hub is polished is avoided, the stability of the hub is kept when the end face of the hub is polished, the polishing quality and the operation safety are improved, the central axis of the hub is not changed after the hub is clamped again, the position of the hub is prevented from being changed after secondary clamping, the polishing equipment is not required to be positioned again, the hub is centered, and the pressure applied to the hub by the inner clamping type centering mechanism and the outer clamping type centering mechanism is balanced, so that the deformation caused by uneven stress of the circumferential wall of the hub when the end face is polished is avoided, and the polishing.

Drawings

FIG. 1 is a first schematic view of the cross-sectional structure of the final assembly of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the final assembly of the present invention;

FIG. 3 is a third schematic view of the cross-sectional structure of the final assembly of the present invention;

FIG. 4 is a fourth schematic cross-sectional view of the assembly of the present invention;

FIG. 5 is a schematic view of the pressing mechanism of FIG. 4;

FIG. 6 is a schematic structural view of the outer clip-type centering mechanism shown in FIG. 5;

FIG. 7 is a first structural view of the inner clip type centering mechanism according to the present invention;

FIG. 8 is a second structural view of the inner clip type centering mechanism of the present invention;

fig. 9 is a schematic view of the connection structure of the polygonal rod and the shaft rod II in the invention.

In the figure: 1-a base; 2-a portal frame; 3, rotating the disc; 4-a gear ring; 5, a first motor; 6-gear one; 7-a strut; 8-grinding table; 9-a cylinder; 10-sleeve one; 11-shaft rod one; 12-a toothed column; 13-motor two; 14-gear two; 15-a boom; 16-a clamp arm; 17-pressure head; 18-link one; 19-link two; 20-turbine one; 21-a first worm; 22-inner clip type centering mechanism; 23-a platen; 24-a top plate; 25-turbine two; 26-a rocker arm; 27-a first strip groove; 28-worm II; 29-sliding bar one; 30-sleeve two; 31-polygonal rods; 32-a first scissor lever set; 33-a second scissor lever set; 34-a ring plate; 35-a second sliding bar; 36-a slide block; 37-shaft rod two; 38-a second strip groove; 39-upright post; 40-a sprocket; 41-a chain; 42-a top rod; 43-gear three; 44-sleeve three; 45-rack.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 9, the present invention provides a technical solution:

a clamping device for polishing an automobile hub comprises a base 1, a polishing table 8 for clamping the hub is arranged on the base 1, a turntable 3 is connected on the base 1 in a fixed-shaft rotating manner, a gear ring 4 is fixed on the outer peripheral wall of the turntable 3, a motor I5 and a portal frame 2 are fixed on the base 1, a gear I6 is fixed on an output shaft of the motor I5, the gear I6 is meshed with the gear ring 4, the supporting rod 7 is fixed on the rotary disc 3, the polishing table 8 is fixed at the upper end of the supporting rod 7, the upper surface of the polishing table 8 is provided with an inner clamping type centering mechanism 22 for clamping and fixing the inner side of the hub, the lower surface of the polishing table 8 is provided with an outer clamping type centering mechanism for clamping and fixing the outer side of the hub, the inner clamping type centering mechanism 22 can be in transmission connection with the outer clamping type centering mechanism, the middle part of a cross beam of the portal frame 2 is provided with a pressing mechanism for pressing and fixing the end face of the hub, and the inner clamping type centering mechanism 22 can be in transmission connection with the pressing.

In the embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 6, fig. 7 and fig. 8, the inner clip type centering mechanism 22 includes a third sleeve 44 rotatably connected to the center of the upper surface of the grinding table 8, a third gear 43 fixed to the upper end of the third sleeve 44, the grinding table 8, the third sleeve 44 and the third gear 43 share a central axis, at least three columns 39 fixed to the upper surface of the grinding table 8, a plurality of the columns 39 arranged on the outer circumferential side of the third gear 43 at equal intervals along the circumferential direction, a sprocket 40 fixed to the upper end of the columns 39, a carrier rod 42 fixed to the sprocket 40 and capable of contacting with the circumferential wall of the hub inner wall, and the sprockets 40 are in transmission connection through a chain 41, a rack 45 fixed to the chain 41 and a rack 45 slidably connected to the grinding table 8, and the rack 45 is in meshing connection with the third gear 43.

In this embodiment, as shown in fig. 1, 2, 3, 4, 6, 7 and 8, the internal clamping type centering mechanism 22 further includes a cylinder 9 and a second motor 13 fixed on the upper surface of the turntable 3, the cylinder 9 is disposed vertically upward and located at the center of the turntable 3, a first sleeve 10 is fixed on the upper end of a piston rod of the cylinder 9, a first shaft rod 11 is fixedly pivoted inside the first sleeve 10, a first toothed column 12 is fixed on the upper end of the first shaft rod 11, a second shaft rod 37 is fixed on the upper end of the first toothed column 12, a multi-edge rod 31 is fixed on the upper end of the second shaft rod 37, a second gear 14 is fixed on the output shaft end of the second motor 13, the second gear 14 is meshed with the first toothed column 12, as shown in fig. 9, the second shaft rod 37 is of a cylindrical structure, and the cross section of the second shaft 37 is tangent to each side of the cross section of the multi-edge rod 31, the second shaft 37 can move up, the movement of the second shaft lever 37 has no force effect on the first worm 21, the polygonal rod 31 can pass through the shaft hole in the center of the end face of the hub and can move up and down in the shaft hole or rotate in the shaft hole, and the movement of the polygonal rod 31 has no force effect on the shaft hole.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, the first shaft rod 11 is a T-shaped, the first sleeve 10 is provided with a groove adapted to the first shaft rod 11, the tooth post 12, the second shaft rod 37, and the multi-edge rod 37 share a central axis, and a central axis of the multi-edge rod 31 coincides with a central axis of the polishing table 8, the multi-edge rod 31 passes through an avoiding hole formed in the center of the polishing table 8, an outer peripheral wall of the multi-edge rod 31 does not contact with an inner wall of the avoiding hole formed in the center of the polishing table 8, that is, the multi-edge rod 31 can move up and down in the avoiding hole and can also rotate, the rotation of the multi-edge rod 31 does not exert an action force on the inner wall of the avoiding hole, the polishing table 8 cannot be driven to rotate, the central axes of the third sleeve 44 and the third gear 43 are provided with a through hole adapted to the multi-edge rod.

In the embodiment, as shown in fig. 2, 3 and 4, the external clamping type centering mechanism comprises a first worm 21 which is connected to the center of the lower surface of the polishing table 8 in a fixed-axis rotating manner, the first worm 21 penetrates through a polygonal rod 31, the polygonal rod 31 can slide up and down in the first worm 21, the lower surface of the polishing table 8 is connected with at least three first turbines 20 in a fixed-axis rotating manner, the first turbines 20 are arranged on the outer peripheral wall side of the first worm 21 at equal intervals along the circumferential direction, and the first worm 21 is connected with the first turbines 20 in a meshing manner.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, the external-clamping centering mechanism further includes a plurality of suspension rods 15 fixed on the lower surface of the polishing table 8, and the suspension rods 15 are in one-to-one correspondence with the first turbines 20, the lower end of the suspension rod 15 is connected with a protruding rod in a fixed-axis rotation manner, and the protruding rod is fixed on the clamping arm 16, one end of the clamping arm 16 is fixed with a pressure head 17, the pressure head 17 and the clamping arm 16 are arranged in a J-shape, the end surface of the pressure head 17 is a slope surface and can be adapted to a rim structure of the peripheral wall of the hub and in abutting contact, the other end of the clamping arm 16 is hinged with a first connecting rod 18, one end of the first connecting rod 18, which is far away from.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the pressing mechanism includes a top plate 24 fixed to the middle of the cross beam of the portal frame 2, a second worm 28 is connected to the middle of the top plate 24 in a fixed-axis manner, a third sleeve 30 is fixed to the lower end of the second worm 28, a groove matched with the cross section of the polygonal rod 31 is formed in the third sleeve 30, the upper end of the polygonal rod 31 can be inserted into the groove, at least two second turbines 25 are connected to the upper surface of the top plate 24 in a fixed-axis manner, the second turbines 25 are arranged on the outer peripheral wall side of the second worm 28 at equal intervals along the circumferential direction, a rocker 26 is fixed to the second turbines 25, and a first strip-shaped groove 27 is formed in the end of the.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the pressing mechanism further includes a plurality of first sliding rods 29 corresponding to the second turbine 25 one by one, the first sliding rods 29 are disposed in a vertical direction and slidably connected to the top plate 24, the first sliding rods 29 are fixed at upper ends thereof with first pins inserted in the first strip-shaped grooves 27 and slidable in the first strip-shaped grooves 27, lower ends of the first sliding rods 29 are located on a lower surface of the top plate 24, lower ends of the first sliding rods 29 are connected to the first scissor rod group 32 in a transmission manner, two upper ends of the first scissor rod group 32 are pivotally connected to a bottom surface of the top plate 24, two middle portions of two connecting rods in the first scissor rod group 32 are respectively provided with second strip-shaped grooves 38, and lower ends of the first sliding rods 29 are fixed with second pins inserted in the second strip-shaped grooves 38 and slidable in the second strip-shaped grooves 38.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the pressing mechanism further includes a ring plate 34 and a pressing plate 23, a second slide rod 35 corresponding to the first slide rod 29 is fixed on an upper surface of the ring plate 23, two lower ends of the first scissor rod group 32 are connected to two upper end fixed shafts of the second scissor rod group 33 in a rotating manner, two lower ends of the second scissor rod group 33 are connected to a slide block 36 in a rotating manner, the two slide blocks 36 at the lower end of the same second scissor rod group 33 are connected to the corresponding second slide rod 35 in a sliding manner, the second scissor rod group 33 may be provided with a plurality of blocks, and are sequentially connected from top to bottom in the manner shown in fig. 2, fig. 3, fig. 4, and fig. 5, a lower surface of the ring plate 34 is connected to the pressing plate 23 in a rotating manner through a turntable bearing fixed shaft, and the pressing plate 23 and the ring plate 34 and.

In addition, the application provides a clamping device for polishing an automobile hub, which comprises the following steps of:

the method comprises the following steps: when the outer circumferential wall of the hub is polished: as shown in fig. 1, 2, 3, 6, 7 and 8, fig. 1 is a schematic view of an initial state of the whole apparatus, the portal frame 2 is of a telescopic structure so as to place a wheel hub on the polishing table 8 and make a shaft hole on the wheel hub penetrate and sleeve on the polygonal rod 31, that is, when the wheel hub is installed, the portal frame 2 is lifted up in a hydraulic lifting manner, the shaft hole of the wheel hub and the upper end of the polygonal rod 31 penetrate and sleeve on the polygonal rod 31, at this time, the inner centering mechanism 22 is located inside the wheel hub, after the wheel hub is placed on the polishing table 8, the portal frame 2 is restored to a normal position, the air cylinder 9 is started, the air cylinder 9 drives the tooth post 12, the second shaft rod 37 and the polygonal rod 31 to move upwards by extending a piston rod thereof, so that the upper end of the polygonal rod 31 is inserted and connected in the second sleeve 30, the second shaft rod 37 is located inside the first worm 21, that is the polygonal rod 31 is not in transmission connection with the first sleeve 21, after the polygonal rod 31 is inserted into the sleeve II 30, the cylinder 9 is stopped and kept still, the motor II 13 is started, the motor II 13 adopts a stepping motor or a servo motor and can complete forward and reverse rotation, the motor II 13 drives the tooth post 12 to rotate through the gear II 14, so that the tooth post 12 synchronously drives the shaft rod II 37 and the polygonal rod 31 to rotate, the rotation of the polygonal rod 31 synchronously drives the gear III 43 to rotate, the rotation of the gear III 43 drives the rack 45 to operate, so as to drive the chain 41 to operate, further, the chain 41 drives each chain wheel 40 to rotate, the rotation of the chain wheel 40 synchronously drives the ejector rod 42 to rotate, the end part of the ejector rod 42 far away from the chain wheel 40 is in abutting and buckling contact with the inner wall of the hub, and an outward abutting force is applied to the inner wall of the hub, so that the hub is clamped from the inside, namely, the limitation to the hub in the horizontal direction is realized, and meanwhile, the vertical center line of the hub is coincided with, the centering function is achieved;

the polygonal rod 31 synchronously drives the sleeve II 30 to rotate while rotating, so that the sleeve II 30 synchronously drives the worm II 28 to rotate, the turbines II 25 synchronously rotate, the rotating of the turbines II 25 presses the slide rods I29 through the rocker arms 26, the slide rods I29 apply pressure to the middle parts of the two connecting rods of the first scissor rod group 32, the included angle of the first scissor rod group 32 in the vertical direction is reduced, the included angle of the second scissor rod group 33 in the vertical direction is synchronously reduced, the length of the first scissor rod group 32 and the length of the second scissor rod group 33 in the vertical direction are increased, the ring plate 34 and the pressure plate 23 are pushed to press the end face of the hub, the hub is pressed and fixed in the vertical direction, the hub is prevented from jumping in the vertical direction when the outer circumferential wall of the hub is polished, and polishing quality and operation safety are improved;

after the inner-clamping type centering mechanism 22 and the pressing mechanism simultaneously fix the hub in the horizontal direction and the vertical direction, stopping the operation of the second motor 13, starting the cylinder 9 again, restoring the initial state of the cylinder 9, enabling the cylinder 9 to drive the tooth post 12, the second shaft rod 37 and the multi-edge rod 31 to synchronously move downwards by contracting the piston rod of the cylinder 9, further enabling the upper end of the multi-edge rod 31 to be pulled out of the second sleeve 30, stopping the operation of the cylinder 9 after the cylinder 9 restores the initial state, starting the first motor 5, driving the gear ring 4 to rotate by the first motor 5 through the gear 6, further enabling the gear ring 4 to synchronously drive the turntable 3 to rotate, driving the polishing table 8 to rotate through the support rod 7 by the rotation of the turntable 3, further enabling the polishing table 8 to synchronously drive the hub to rotate under the action of the inner-clamping type centering mechanism 22 and the pressing mechanism, thereby facilitating the polishing equipment to polish and, the fixing of the hub by the inner clamping type centering mechanism 22 does not interfere with the grinding equipment in the grinding process, so that the grinding efficiency is improved conveniently, and the outward force applied to the hub by the inner clamping type centering mechanism 22 is offset with the force applied to the inside of the hub by the grinding equipment in the grinding operation, so that the deformation of the hub in the polishing and grinding process of the outer circumference of the hub is avoided, and the grinding quality of the hub is improved;

step two: when the end face of the hub is polished: as shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, after the outer circumferential wall of the hub is polished, the operation of the first motor 5 is stopped, so that the rotation of the turntable 3 and the polishing table 8 is stopped, the cylinder 9 is started, the cylinder 9 drives the tooth post 12, the second shaft rod 37 and the polygonal rod 31 to move upwards by extending the piston rod of the cylinder 9, so that the upper end of the polygonal rod 31 is inserted into the second sleeve 30, the cylinder 9 is stopped and kept stationary after the polygonal rod 31 is inserted into the second sleeve 30, the second motor 13 is started to rotate reversely, so that the second motor 13 drives the tooth post 12, the second shaft rod 37 and the polygonal rod 31 to synchronously rotate reversely through the second gear 14, the third gear 43 of the polygonal rod 31 rotates reversely, so that the third gear 43 drives the rack 45 and the chain 41 to reversely rotate, and the chain 41 drives the ejector rod 42 to reversely rotate through each chain wheel 40, so that the top rod 42 is separated from the inner wall of the hub, the reverse rotation of the polygon rod 31 also synchronously drives the second sleeve 30 to reversely rotate, and further the second sleeve 30 synchronously drives the second worm 28 to reversely rotate, so that the second turbines 25 synchronously and reversely rotate, the reverse rotation of the second turbines 25 applies an upward force to the first slide rods 29 through the rocker arms 26, so that the first slide rods 29 move upwards, the upward movement of the first slide rods 29 applies a pulling force to the middle parts of the two connecting rods of the first scissor rod group 32, so that the included angle of the first scissor rod group 32 in the vertical direction is increased, and the included angle of the second scissor rod group 33 in the vertical direction is increased synchronously, so that the first scissor rod group 32 and the second scissor rod group 33 reduce in length in the vertical direction to drive the ring plate 34 and the pressing plate 23 to move upwards for resetting, and when the end face of the hub is polished by adopting the first scissor rod group 32 and the second scissor rod group 33, the pressing plate 23 has a larger space with the end face of the hub, so that the operation of the polishing equipment is facilitated, the polishing equipment is prevented from being touched with the pressing plate 23, the operation safety is improved, the operation of the second motor 13 is stopped at the moment, the cylinder 9 is restarted, the cylinder 9 is enabled to recover the initial state, the upper end of the multi-edge rod 31 is further pulled out of the second sleeve 30, the cylinder 9 is stopped after the initial state is recovered, the second motor 14 is restarted, the rotation of the second motor 14 drives the inner clamp type centering mechanism 22 to clamp the hub again from the inside through the multi-edge rod 31, the limitation on the hub in the horizontal direction is achieved, the central axis of the hub cannot be changed after the secondary clamping, the position of the hub is prevented from being changed after the secondary clamping, the polishing equipment does not need to be repositioned, and the function of centering on the hub is achieved;

the multi-edge rod 31 synchronously drives the first worm 21 to rotate while rotating, the first worm 21 synchronously drives the first worm wheels 20 to rotate, so that the second connecting rod 19 applies thrust to the lower end of the clamping arm 16 through the first connecting rod 18, the clamping arm 16 drives the pressure head 17 to abut against and press the rim of the outer circumference of the hub, the hub is clamped and fixed from the outside, the pressure head 17 applies inward pressure to the hub on the horizontal plane, the pressure is offset with the outward pressure applied to the hub by the ejector rod 42, the deformation of the circumferential wall of the hub due to uneven stress when the end face is polished is avoided, the polishing quality is improved, the pressure applied from the outside by the external clamp type centering mechanism is uniformly distributed on the outer circumference of the hub, the centering effect on the hub is further achieved, downward pressure is applied to the hub in the vertical direction by the pressure head 17, and the jumping of the hub in the vertical direction is avoided when the end face of the hub is, the stability of the hub during polishing is kept, and the polishing quality and the operation safety are improved;

after the inner clamp type centering mechanism 22 and the outer clamp type centering mechanism simultaneously fix the wheel hub in the horizontal direction and the vertical direction, stopping the work of the motor II 13, starting the motor I5 again, driving the gear ring 4 to rotate by the motor I5 through the gear 6, further enabling the gear ring 4 to synchronously drive the rotary table 3 to rotate, driving the grinding table 8 to rotate by the rotation of the rotary table 3 through the supporting rod 7, further enabling the grinding table 8 to synchronously drive the wheel hub to rotate under the action of the inner clamp type centering mechanism 22 and the outer clamp type centering mechanism, further facilitating the grinding equipment to polish and grind the end face of the wheel hub, and improving the grinding efficiency;

step three: after the end face of the hub is polished, the first motor 5 is stopped, so that the rotating disc 3 and the polishing table 8 stop rotating, at the moment, the second motor 13 is started to rotate reversely, the second motor 13 drives the tooth post 12, the second shaft rod 37 and the multi-edge rod 31 to synchronously and reversely rotate through the second gear 14, the reversely rotating synchronous belt of the multi-edge rod 31 drives the third gear 43 to reversely rotate, as shown in fig. 8, so that the third gear 43 drives the rack 45 and the chain 41 to reversely operate, the chain 41 synchronously drives the ejector rod 42 to reversely rotate through each chain wheel 40, the reverse rotation of the ejector rod 42 enables one end, in abutting and buckling contact with the inner wall of the hub, of the ejector rod 42 to be far away from the inner wall of the hub, so that the hub is released from being clamped from the inside, the reverse rotation of the multi-edge rod 31 also synchronously drives the first worm 21 to reversely rotate, the reverse rotation of the first worm 21 synchronously drives each first turbine 20 to reversely rotate, and then the clamping arm 16 drives the pressure head 17 to be separated from the outer circumferential rim of the hub and reset, after the inner clamping type centering mechanism 22 and the outer clamping type centering mechanism reset, the motor II 13 stops working, the portal frame 2 is lifted again, the hub after being polished is taken down from the polishing table 8, then the next hub to be polished is taken up, and the hub is polished according to the steps.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a clamping device for automobile wheel hub is polished and is used, includes base (1), be provided with on base (1) and be used for polishing platform (8) to the wheel hub centre gripping, its characterized in that: a turntable (3) is connected to the base (1) in a fixed-shaft rotating mode, a gear ring (4) is fixed to the outer peripheral wall of the turntable (3), a first motor (5) and a portal frame (2) are fixed to the base (1), a first gear (6) is fixed to an output shaft of the first motor (5), the first gear (6) is meshed with the gear ring (4) and connected with the gear ring (7), a supporting rod (7) is fixed to the turntable (3), and the grinding table (8) is fixed to the upper end of the supporting rod (7);

the upper surface of the grinding table (8) is provided with an inner clamping type centering mechanism (22) for clamping and fixing the inner side of the hub, the lower surface of the grinding table (8) is provided with an outer clamping type centering mechanism for clamping and fixing the outer side of the hub, and the inner clamping type centering mechanism (22) can be in transmission connection with the outer clamping type centering mechanism;

a pressing mechanism for pressing and fixing the end face of the wheel hub is arranged in the middle of a cross beam of the portal frame (2), and the inner clamping type centering mechanism (22) can be in transmission connection with the pressing mechanism; the inner clamping type centering mechanism (22) comprises a third sleeve (44) which is rotationally connected to the center of the upper surface of the grinding table (8) through a fixed shaft, a third gear (43) is fixed to the upper end of the third sleeve (44), the grinding table (8), the third sleeve (44) and the third gear (43) share the central axis, at least three upright posts (39) are fixed to the upper surface of the grinding table (8), the upright posts (39) are arranged on the outer circumferential side of the third gear (43) at equal intervals along the circumferential direction, chain wheels (40) are fixed to the upper ends of the upright posts (39), ejector rods (42) which can be in abutting contact with the circumferential wall of the inner wall of a hub are fixed to the chain wheels (40), the chain wheels (40) are in transmission connection through chains (41), racks (45) are fixed to the chains (41), and the racks (45) are slidably connected to the grinding table (8), the rack (45) is meshed with the third gear (43); the inner clamping type centering mechanism (22) further comprises a cylinder (9) and a second motor (13) which are fixed on the upper surface of the rotary table (3), the cylinder (9) is vertically arranged upwards and located at the center of the rotary table (3), a first sleeve (10) is fixed at the upper end of a piston rod of the cylinder (9), a first shaft rod (11) is rotatably connected with the inner fixed shaft of the first sleeve (10), a tooth column (12) is fixed at the upper end of the first shaft rod (11), a second shaft rod (37) is fixed at the upper end of the tooth column (12), a multi-edge rod (31) is fixed at the upper end of the second shaft rod (37), a second gear (14) is fixed at the output shaft end of the second motor (13), and the second gear (14) is meshed with the tooth column (12); the grinding device comprises a first shaft lever (11), a sleeve (10), a second shaft lever (37), a third sleeve (44) and a third gear (43), wherein the first shaft lever (11) is T-shaped, a groove matched with the first shaft lever (11) is formed in the first sleeve (10), the first shaft lever (11), a tooth column (12), the second shaft lever (37) and the third shaft lever (37) share the central axis, the central axis of the third shaft lever (31) is superposed with the central axis of the grinding table (8), the third shaft lever (31) penetrates through a avoiding hole formed in the center of the grinding table (8), through holes matched with the third shaft lever (31) are formed in the central axes of the third sleeve (44) and the third gear (43), and the third shaft lever (31) can slide up and down; the outer clamping type centering mechanism comprises a first worm (21) which is rotationally connected to the center of the lower surface of the grinding table (8) through a fixed shaft, the first worm (21) penetrates through a multi-edge rod (31), the multi-edge rod (31) can slide up and down in the first worm (21), the lower surface of the grinding table (8) is rotationally connected with at least three first turbines (20), the first turbines (20) are arranged on the side of the peripheral wall of the first worm (21) at equal intervals along the circumferential direction, and the first worm (21) is in meshed connection with the first turbines (20); the outer clamping type centering mechanism further comprises a plurality of hanging rods (15) fixed on the lower surface of the grinding table (8), the hanging rods (15) correspond to the first turbines (20) one by one, the lower ends of the hanging rods (15) are fixedly connected with protruding rods in a shaft fixing mode, the protruding rods are fixed on the clamping arms (16), one ends of the clamping arms (16) are fixedly provided with pressure heads (17), the pressure heads (17) and the clamping arms (16) are arranged in a J shape, the other ends of the clamping arms (16) are hinged with first connecting rods (18), one ends, far away from the clamping arms (16), of the first connecting rods (18) are hinged with second connecting rods (19), and one ends, far away from the first connecting rods (18), of the second connecting rods (19) are fixedly connected to the first turbines; the pressing mechanism comprises a top plate (24) fixed in the middle of a cross beam of the portal frame (2), a second worm (28) is rotatably connected to a middle fixed shaft of the top plate (24), a third sleeve (30) is fixed to the lower end of the second worm (28), a groove matched with the cross section of the polygonal rod (31) is formed in the third sleeve (30), the upper end of the polygonal rod (31) can be inserted into the groove, at least two second turbines (25) are rotatably connected to the upper surface of the top plate (24) in a fixed shaft mode, the second turbines (25) are arranged on the peripheral wall side of the second worm (28) at equal intervals along the circumferential direction, rocker arms (26) are fixed to the second turbines (25), and strip-shaped grooves (27) are formed in the end portions, far away from the second turbines (25), of the rocker arms (26); the pressing mechanism further comprises a plurality of first sliding rods (29) which are in one-to-one correspondence with the second turbines (25), the first sliding rods (29) are arranged in the vertical direction, and is connected on the top plate (24) in a sliding way, a first pin rod is fixed at the upper end of the first sliding rod (29) and is inserted in the first strip-shaped groove (27), and can slide in the first strip-shaped groove (27), the lower end of the first sliding rod (29) is positioned on the lower surface of the top plate (24), the lower end of the first sliding rod (29) is in transmission connection with a first scissor rod group (32), the two upper ends of the first scissor rod group (32) are fixedly and rotatably connected with the bottom surface of the top plate (24), a strip-shaped groove II (38) is formed in the middle of each of two connecting rods in the first scissor rod group (32), a pin rod II is fixed at the lower end of the sliding rod I (29), and the second pin rod is inserted in the second strip-shaped groove (38) and can slide in the second strip-shaped groove (38).

2. The clamping device for polishing the automobile hub according to claim 1, wherein the clamping device comprises: the pressing mechanism further comprises a ring plate (34) and a pressing plate (23), a sliding rod II (35) corresponding to the sliding rod I (29) is fixed on the upper surface of the ring plate (34), two lower ends of the first scissor rod group (32) are rotatably connected with two upper end fixed shafts of the second scissor rod group (33), two lower ends of the second scissor rod group (33) are rotatably connected with a sliding block (36) in a fixed shaft mode, and the two sliding blocks (36) at the lower end of the same second scissor rod group (33) are slidably connected onto the corresponding sliding rod II (35) in a sliding mode.

3. The clamping device for polishing the automobile hub according to claim 2, wherein the clamping device comprises: the lower surface of the ring plate (34) is rotationally connected with the pressing plate (23) through a turntable bearing fixed shaft, and the pressing plate (23), the ring plate (34) and the grinding table (8) share the central axis.

4. The use method of the clamping device for polishing the automobile hub according to any one of claims 1 to 3, is characterized in that: the method comprises the following steps:

the method comprises the following steps: when the outer circumferential wall of the hub is polished, the hub is arranged on a polishing platform (8) and is fixed through an inner clamping type centering mechanism (22) and a pressing mechanism;

step two: when the end face of the hub is polished, the hub is fixed through an inner clamping type centering mechanism (22) and an outer clamping type centering mechanism;

step three: after the end face of the hub is polished, the fixing of the inner clamp type centering mechanism (22) and the outer clamp type centering mechanism to the hub is released, and the polished hub is taken down from the polishing table (8).