CN112157498A

CN112157498A - Equipment for polishing inner hole and plane of metal ring

Info

Publication number: CN112157498A
Application number: CN202011131653.5A
Authority: CN
Inventors: 黄吉磊
Original assignee: Wenzhou Kepa Machinery Technology Co ltd
Current assignee: Wenzhou Kepa Machinery Technology Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-01-01

Abstract

The invention discloses equipment for polishing inner holes and planes of metal rings, which comprises a machine body, wherein a lifting cavity is arranged in the machine body, a polishing cavity is arranged on the upper side of the lifting cavity, two symmetrical clamping cavities are arranged on the left side and the right side of the machine body, supporting columns connected with the left side and the right side are fixedly arranged on the upper side of the machine body, supporting plates are fixedly arranged between the supporting columns, a motor shell is fixedly arranged on the upper side of the supporting plates, a power cavity is arranged in the motor shell, a polishing device for polishing the bottom surface of the rings is arranged in the machine body, a lifting device for polishing the upper surfaces of the rings is arranged in a polishing body, and an inner hole device for polishing the inner holes of the rings is arranged in the polishing body.

Description

Equipment for polishing inner hole and plane of metal ring

Technical Field

The invention relates to the related field of grinding tools, in particular to a device for grinding an inner hole and a plane of a metal ring.

Background

At present, with the development of society, grinding tools are tools for grinding, grinding and polishing, most of the grinding tools are artificial grinding tools made of grinding materials and bonding agents, and also natural grinding tools directly processed from natural ore rocks, the grinding tools are widely used in machinery manufacturing and other metal processing industries, and are also used in grain processing, paper making industry and processing of non-metal materials such as ceramics, glass, stone, plastics, rubber, wood, and the like.

Disclosure of Invention

Aiming at the technical defects, the invention provides equipment for polishing the inner hole and the plane of the metal ring, which can overcome the defects.

The equipment for polishing the inner hole and the plane of the metal ring comprises a machine body, wherein a lifting cavity is arranged in the machine body, a polishing cavity is arranged on the upper side of the lifting cavity, two symmetrical clamping cavities are arranged on the left side and the right side of the machine body, supporting columns which are connected in a bilateral symmetry mode are fixedly arranged on the upper side face of the machine body, a supporting plate is fixedly arranged between the supporting columns, a motor shell is fixedly arranged on the upper side face of the supporting plate, a power cavity is arranged in the motor shell, and a polishing device for polishing the bottom surface of the ring is arranged in the machine body;

the polishing device comprises rotating shafts which are fixedly arranged on the lower side walls of the two clamping cavities respectively, bevel gear rings are rotatably connected on the rotating shafts, a first rotating shaft is rotatably connected on the side wall of each clamping cavity, bevel gears meshed with the rotating shafts are fixedly arranged on the first rotating shaft, a first gear is fixedly arranged on the first rotating shaft, clamping nuts are fixedly arranged on the left side and the right side of the machine body respectively, a first spline shaft is rotatably connected between the clamping cavity and the polishing cavity, a clamping plate is fixedly arranged on one side of the first spline shaft, the side wall of the clamping cavity is rotatably connected with a rotating lead screw in threaded connection with the clamping nuts, a handle is fixedly arranged on the rotating lead screw on the right side, the rotating lead screw is fixedly connected with the first spline shaft, a second rotating shaft is rotatably connected on the side wall of the clamping cavity, and a second gear connected with a, a sliding rod is connected in each of the two supporting columns in a sliding manner, a grinding body is rotatably connected in each sliding rod, a main motor is fixedly arranged on the lower side wall of the power cavity, the main motor is in power connection with a motor shaft, a third gear is fixedly arranged on the motor shaft, a third rotating shaft is rotatably connected on the upper side wall of the power cavity, and a fourth gear meshed with the third gear is fixedly arranged on the third rotating shaft;

the polishing machine is characterized in that a lifting device for polishing the upper surface of a circular ring is arranged in the polishing body, and an inner hole device for polishing an inner hole of the circular ring is arranged in the polishing body.

Preferably, a first cylinder is fixedly arranged on the lower side of the lifting cavity, a first piston is slidably connected to the first cylinder, a first piston rod is fixedly arranged on the first piston, a rotating plate is fixedly arranged on the upper side of the first piston rod, a lifting spring is connected between the rotating plate and the lower side wall of the lifting cavity, a second spline shaft is fixedly arranged on the upper side of the rotating plate, the lower side wall of the lifting cavity is slidably connected with two bilaterally symmetrical bearing rods, a movable ring which slides in the lower side wall of the lifting cavity is arranged on the lower side of the bearing rods, a movable spring is connected to the lower side of the movable ring, the two bearing rods slide in the rotating plate, a first grinding plate is fixedly arranged on the upper side of the left bearing rod, and a bearing plate.

Preferably, the lifting device comprises an auxiliary motor fixedly installed on the upper side surface of the polishing body, the auxiliary motor is in power connection with a screw rod rotating shaft, a fixing nut in threaded connection with the screw rod rotating shaft is fixedly arranged in the polishing body, a polishing plate II is fixedly arranged on the lower side of the screw rod rotating shaft, a lifting screw rod is fixedly arranged in the polishing body, a spline shaft III in four-spline connection with the gear is fixedly arranged on the upper side of the lifting screw rod, the spline shaft III penetrates through the supporting plate and the motor shell, a rotating rod is fixedly arranged on the lower side of the lifting screw rod, a telescopic cavity is formed in the rotating rod, a spline groove is formed in the lower side of the rotating rod, two cylinders II which are bilaterally symmetrical are fixedly arranged in the supporting plate, a piston II is slidably connected in each cylinder II, a piston rod II is fixedly arranged on the piston II, and a moving nut which slides in the supporting, the movable nut can be in threaded connection with the lifting screw rod, and air pipes are connected between the second air cylinder and the first air cylinder respectively.

Preferably, the inner hole device comprises a sliding shell fixedly installed on the upper side wall of the telescopic cavity, two horizontal sliding plates which are bilaterally symmetrical are slidably connected in the sliding shell, a lifting sliding plate is slidably connected in each horizontal sliding plate, a lifting connecting rod is fixedly arranged on each lifting sliding plate, a sliding plate connecting rod is fixedly arranged on each horizontal sliding plate, a polishing block is fixedly arranged on each sliding plate connecting rod, a fixed block is fixedly arranged on the right side surface of each rotating rod, a rotating rod is rotatably connected in each fixed block, a compression spring is connected between each rotating rod and the right side surface of each rotating rod, a movable connecting rod is slidably connected on the right side wall of the telescopic cavity, a contact plate is rotatably connected on the right side of each movable connecting rod, each rotating rod is in contact with the contact plate, a movable rack is fixedly arranged on the left side of each movable connecting, the utility model discloses a telescopic door, including pivot five, including flexible chamber rear side wall, pivot four, the pivot four go up set firmly with remove rack toothing's gear five, the pivot four go up set firmly band pulley one, set firmly band pulley two in the pivot five, band pulley two with be connected with driving belt between the band pulley one, the pivot five with be connected with the reset torsion spring between the flexible chamber rear side wall, five front sides in pivot have set firmly the rotation wheel, the dwang that has two symmetries sets firmly on the rotation wheel, every rotate on the dwang be connected with.

The beneficial effects are that: the utility model provides an equipment that metal ring hole and plane were polished, wherein grinding device can the fixed clamp ring, and polish the processing to the ring bottom surface, elevating gear can control the processing of polishing of ring upper surface, and change the volume of polishing on ring surface, the hole device can polish the processing to the ring hole, and the diameter of polishing according to the hole diameter adjustment, this equipment can polish ring hole and upper and lower surface fast, need not artifical substep and process consuming time consuming and labouring, can shorten process time, the machining efficiency is improved, and can polish the processing to the ring of equidimension not.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view of the whole cross section of the metal ring inner hole and plane grinding device of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a cross-sectional view of the turn bar of FIG. 1 in accordance with the present invention;

fig. 4 is a cross-sectional view taken along the line B-B of fig. 3 in accordance with the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a device for polishing an inner hole and a plane of a metal ring, which comprises a machine body 10, wherein a lifting cavity 85 is arranged in the machine body 10, a polishing cavity 88 is arranged on the upper side of the lifting cavity 85, two symmetrical clamping cavities 87 are arranged on the left side and the right side of the machine body 10, support columns 19 which are connected with the left side and the right side are fixedly arranged on the upper side of the machine body 10, a support plate 18 is fixedly arranged between the support columns 19, a motor shell 17 is fixedly arranged on the upper side of the support plate 18, a power cavity 86 is arranged in the motor shell 17, a polishing device 91 for polishing the bottom surface of the metal ring is arranged in the machine body 10, the polishing device 91 comprises rotating shafts 33 which are respectively and fixedly arranged on the lower side walls of the two clamping cavities 87, a bevel gear ring 34 is rotatably connected on the rotating shafts 33, a rotating shaft 36 is rotatably connected on the side wall of each clamping, a first gear 37 is fixedly arranged on the first rotating shaft 36, clamping nuts 40 are fixedly arranged on the left side surface and the right side surface of the machine body 10 respectively, a first spline shaft 55 is rotatably connected between the clamping cavity 87 and the grinding cavity 88, a clamping plate 43 is fixedly arranged on one side of the first spline shaft 55, a rotating lead screw 41 in threaded connection with the clamping nut 40 is rotatably connected to the side wall of the clamping cavity 87, a handle 42 is fixedly arranged on the rotating lead screw 41 on the right side, the rotating lead screw 41 is fixedly connected with the first spline shaft 55, a second rotating shaft 38 is rotatably connected to the side wall of the clamping cavity 87, a second gear 39 in splined connection with the first spline shaft 55 is fixedly arranged on the second rotating shaft 38, two sliding rods 25 are slidably connected in the supporting columns 19, a grinding body 26 is rotatably connected in the sliding rods 25, a main motor 11 is fixedly arranged on the side wall of the power cavity 86, and the, the grinding machine is characterized in that a third gear 13 is fixedly arranged on the motor shaft 12, a third rotating shaft 16 is rotatably connected to the side wall of the power cavity 86, the third rotating shaft 16 is fixedly provided with a fourth gear 14 meshed with the third gear 13, a lifting device 92 for grinding the upper surface of a ring is arranged in the grinding body 26, and an inner hole device 90 for grinding an inner hole of the ring is arranged in the grinding body 26.

Beneficially, a first air cylinder 52 is fixedly arranged on the lower side of the lifting cavity 85, a first piston 51 is slidably connected in the first air cylinder 52, a first piston rod 50 is fixedly arranged on the first piston rod 51, a rotating plate 48 is fixedly arranged on the upper side of the first piston rod 50, a lifting spring 49 is connected between the rotating plate 48 and the lower side wall of the lifting cavity 85, a second spline shaft 53 is fixedly arranged on the upper side of the rotating plate 48, two bilaterally symmetrical bearing rods 46 are slidably connected to the lower side wall of the lifting cavity 85, a movable ring 45 sliding in the lower side wall of the lifting cavity 85 is arranged on the lower side of the bearing rod 46, a movable spring 44 is connected on the lower side of the movable ring 45, the two bearing rods 46 slide in the rotating plate 48, a first grinding plate 54 is fixedly arranged on the upper side of the bearing rod 46 on the left side, and a bearing plate 47 is fixedly arranged on the upper side of the, the ring is placed on the first polishing plate 54 and the bearing plate 47, the handle 42 is manually rotated, the rotating screw 41 on the right side rotates to drive the spline shaft 55 to rotate, the rotating screw 41 rotates and moves in the clamping nut 40, the spline shaft 55 drives the gear two 39 to rotate to drive the gear one 37 and the bevel gear 35 to rotate, the bevel gear 35 drives the bevel gear ring 34 to rotate, the bevel gear ring 34 drives the bevel gear 35 on the left side to rotate, the gear one 37 and the gear two 39 on the left side are made to rotate, the spline shaft 55 on the left side and the rotating screw 41 are made to rotate, the clamping nut 40 on the left side makes the rotating screw 41 on the left side move, the two clamping plates 43 approach each other to push the ring to a central position, and the ring is compressed and fixed.

Beneficially, the lifting device 92 includes a secondary motor 28 fixedly installed on the upper side surface of the grinding body 26, the secondary motor 28 is in power connection with a screw rod rotating shaft 29, a fixing nut 30 in threaded connection with the screw rod rotating shaft 29 is fixedly installed in the grinding body 26, a second grinding plate 31 is fixedly installed on the lower side of the screw rod rotating shaft 29, a lifting screw rod 24 is fixedly installed in the grinding body 26, a third spline shaft 15 in splined connection with the fourth gear 14 is fixedly installed on the upper side of the lifting screw rod 24, the third spline shaft 15 penetrates through the support plate 18 and the motor housing 17, a rotating rod 32 is fixedly installed on the lower side of the lifting screw rod 24, a telescopic cavity 89 is arranged in the rotating rod 32, a spline groove 81 is arranged on the lower side of the rotating rod 32, two left-right symmetric cylinders 20 are fixedly installed in the support plate 18, a second piston 21 is slidably connected in each second cylinder 20, a second piston rod 22 is fixedly installed on each second piston, a moving nut 23 sliding in the supporting plate 18 is fixedly arranged on the second piston rod 22, the moving nut 23 can be in threaded connection with the lifting screw rod 24, an air pipe is connected between the second air cylinder 20 and the first air cylinder 52 respectively, so that the auxiliary motor 28 is started, the screw rod rotating shaft 29 rotates, the fixed nut 30 is lifted and lowered, the height of the second grinding plate 31 and the grinding amount of the circular ring surface are adjusted, the main motor 11 is started, the motor shaft 12 rotates to drive the third gear 13 to rotate, the third gear 13 drives the fourth gear 14 to rotate, the third spline shaft 15 and the lifting screw rod 24 are driven to rotate, the moving nut 23 enables the lifting screw rod 24 to lift, the lifting screw rod 24 drives the grinding body 26 to lift, the sliding rod 25 slides and rises in the supporting column 19, and the rotating rod 32 enters the circular ring inner hole, the second polishing plate 31 contacts the upper surface of the ring to polish the surface of the ring, the second spline shaft 53 enters the spline groove 81, the second spline shaft 53 is in spline connection with the rotating rod 32, the rotating rod 32 drives the second spline shaft 53 to rotate to drive the rotating plate 48 to rotate, the bearing rod 46 rotates, the first polishing plate 54 and the bearing plate 47 rotate, the first polishing plate 54 polishes the bottom surface of the ring, the movable spring 44 applies pressure to the first polishing plate 54 to enable the first polishing plate 54 to be attached to the bottom surface of the ring and polished, the rotating rod 32 pushes the second spline shaft 53 and the rotating plate 48 to descend, the lifting spring 49 is compressed, the rotating plate 48 drives the first piston rod 50 and the first piston 51 to descend, the pressure in the first cylinder 52 rises to push the second piston 21 in the second cylinder 20 to move, the second piston 21 drives the moving nut 23 to move away from each other, the moving nut 23 is separated from the lifting screw rod 24, and the lifting screw rod 24 stops descending.

Beneficially, the inner hole device 90 includes a sliding housing 73 fixedly installed on the upper side wall of the telescopic cavity 89, two bilaterally symmetrical horizontal sliding plates 76 are slidably connected in the sliding housing 73, a lifting sliding plate 80 is slidably connected in each horizontal sliding plate 76, a lifting connecting rod 79 is fixedly installed on the lifting sliding plate 80, a sliding plate connecting rod 77 is fixedly installed on the horizontal sliding plate 76, a sanding block 78 is fixedly installed on the sliding plate connecting rod 77, a fixed block 58 is fixedly installed on the right side surface of the rotating rod 32, a rotating rod 59 is rotatably connected in the fixed block 58, a compression spring 60 is connected between the rotating rod 59 and the right side surface of the rotating rod 32, a moving connecting rod 62 is slidably connected on the right side wall of the telescopic cavity 89, a contact plate 61 is rotatably connected on the right side of the moving connecting rod 62, the rotating rod 59 is in contact with the contact plate 61, a moving rack 63 is, the lateral wall rotates and is connected with four 65 of pivot and five 70 of pivot behind the flexible chamber 89, set firmly on the four 65 of pivot with five 64 of gear that the removal rack 63 meshes, set firmly one band pulley 66 on the four 65 of pivot, set firmly two band pulleys 68 in five 70 of pivot, two band pulleys 68 with be connected with driving belt 67 between one band pulley 66, five 70 of pivot with be connected with reset torsion spring 69 between the flexible chamber 89 rear side wall, five 70 front sides of pivot have set firmly the turning wheel 71, set firmly the dwang 72 of two symmetries on the turning wheel 71, every rotate on the dwang 72 be connected with the rotating sleeve 74 of lifting connecting rod 79 fixed connection, thereby three 15 rotations of integral key shaft drive lift lead screw 24 with the rotation of rotation rod 32, the rotation rod 32 drives the slide connecting rod 77 with the piece of polishing is rotatory, when the rotation rod 32 descends and gets into in the ring hole after, the circular ring pushes the rotating rod 59 to rotate, the compression spring 60 is compressed, the rotating rod 59 pushes the moving link 62, the moving rack 63 is pushed to move, the moving rack 63 drives the gear five 64 to rotate, so that the belt wheel one 66 rotates, the second belt wheel 68 is driven to rotate through the transmission belt 67, the rotating wheel 71 is driven to rotate, the rotating rod 72 is driven to rotate, the lifting connecting rod 79 and the lifting sliding plate 80 are driven to move up and down, and pushes the horizontal sliding plate 76 to move horizontally, the horizontal sliding plate 76 drives the sliding plate connecting rod 77 and the polishing block 78 to move horizontally, the rotating diameter of the polishing block 78 is changed, the polishing block 78 polishes the inner hole of the circular ring, and the grinding diameter is changed according to the diameter of the inner hole, and the reset torsion spring 69 resets the rotating shaft five 70 and the rotating wheel 71, so that the grinding block 78 is reset.

In the initial state, the main motor 11 and the sub-motor 28 are not started, the moving nut 23 is in threaded connection with the lifting screw rod 24, and the clamping plate 43 does not clamp the ring.

When the working is started, the processing circular ring is put into the grinding cavity 88, the circular ring is placed on the grinding plate 54 and the bearing plate 47, the handle 42 is manually rotated, the rotating screw 41 on the right side rotates to drive the spline shaft 55 to rotate, the rotating screw 41 rotates and moves in the clamping nut 40, the spline shaft 55 drives the gear II 39 to rotate, the gear I37 and the bevel gear 35 are driven to rotate, the bevel gear 35 drives the bevel gear ring 34 to rotate, the gear I37 and the gear II 39 on the left side rotate, the spline shaft 55 and the rotating screw 41 on the left side rotate, the clamping nut 40 on the left side drives the rotating screw 41 on the left side to move, the two clamping plates 43 are close to each other to push the circular ring to a central position, the circular ring is tightly pressed and fixed, the auxiliary motor 28 is started, the rotating shaft 29 rotates, the screw is lifted in the fixing nut 30, the height of the grinding plate II 31 and the grinding amount of the circular ring surface are adjusted, the main motor 11 is started, the motor shaft 12 rotates to drive the gear three 13 to rotate, the gear three 13 drives the gear four 14 to rotate to drive the spline shaft three 15 and the lifting screw rod 24 to rotate, the moving nut 23 enables the lifting screw rod 24 to move up and down, the lifting screw rod 24 drives the grinding body 26 to move up and down, the slide rod 25 slides and moves up and down in the support column 19, the rotating rod 32 enters an inner hole of the ring, the grinding plate two 31 contacts with the upper surface of the ring to grind the surface of the ring, the spline shaft two 53 enters the spline groove 81, the spline shaft two 53 is in spline connection with the rotating rod 32, the rotating rod 32 drives the spline shaft two 53 to rotate to drive the rotating plate 48 to rotate, the bearing rod 46 rotates, the grinding plate one 54 and the bearing plate 47 rotate, the grinding plate one 54 grinds the bottom surface of the ring, the movable spring 44 exerts pressure on the grinding plate one 54 to enable the grinding plate one 54 to tightly adhere to the bottom surface of the, the lifting spring 49 is compressed, the rotating plate 48 drives the piston rod I50 and the piston I51 to descend, the pressure in the cylinder I52 rises, the piston II 21 in the cylinder II 20 is pushed to move, the piston II 21 drives the moving nut 23 to move away from each other, the moving nut 23 is separated from the lifting screw rod 24, the lifting screw rod 24 stops descending, the spline shaft III 15 rotates to drive the lifting screw rod 24 and the rotating rod 32 to rotate, the rotating rod 32 drives the sliding plate connecting rod 77 and the sanding block 78 to rotate, after the rotating rod 32 descends into an inner hole of a circular ring, the circular ring pushes the rotating rod 59 to rotate, the compression spring 60 is compressed, the rotating rod 59 pushes the moving connecting rod 62 to push the moving rack 63 to move, the moving rack 63 drives the gear five 64 to rotate, the belt wheel I66 rotates, the belt wheel II 68 rotates through the transmission belt 67, the rotating wheel 71 rotates, the rotating rod 72 rotates, the lifting connecting rod, and the horizontal sliding plate 76 is pushed to move horizontally, the horizontal sliding plate 76 drives the sliding plate connecting rod 77 and the polishing block 78 to move horizontally, the rotating diameter of the polishing block 78 is changed, the polishing block 78 polishes the inner hole of the ring, the polishing diameter is changed according to the diameter of the inner hole, the rotating shaft five 70 and the rotating wheel 71 are reset by the reset torsion spring 69, and the polishing block 78 is reset.

The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides an equipment that metal ring hole and plane were polished, includes the organism, its characterized in that: a lifting cavity is formed in the machine body, a grinding cavity is formed in the upper side of the lifting cavity, two symmetrical clamping cavities are formed in the left side and the right side of the machine body, support columns connected with the left side and the right side are fixedly arranged on the upper side surface of the machine body, a support plate is fixedly arranged between the support columns, a motor shell is fixedly arranged on the upper side surface of the support plate, a power cavity is formed in the motor shell, and a grinding device for grinding the bottom surface of a circular ring is arranged in the machine body;

2. The apparatus for grinding the inner hole and the plane of the metal ring according to claim 1, wherein: the lifting cavity lower side is fixedly provided with a first air cylinder, the first air cylinder is slidably connected with a first piston, the first piston is fixedly provided with a first piston rod, the upper side of the first piston rod is fixedly provided with a rotating plate, the rotating plate and the lower side wall of the lifting cavity are connected with a lifting spring, the upper side of the rotating plate is fixedly provided with a second spline shaft, the lower side wall of the lifting cavity is slidably connected with two bearing rods with bilateral symmetry, the lower side of each bearing rod is provided with a movable ring which slides in the lower side wall of the lifting cavity, the lower side of the movable ring is connected with a movable spring, the two bearing rods slide in the rotating plate, the upper side of the left bearing rod is fixedly provided with a first grinding plate, and the upper side.

3. The apparatus for grinding the inner hole and the plane of the metal ring according to claim 1, wherein: the lifting device comprises an auxiliary motor fixedly arranged on the upper side surface of the polishing body, the auxiliary motor is in power connection with a screw rod rotating shaft, a fixing nut in threaded connection with the screw rod rotating shaft is fixedly arranged in the polishing body, a polishing plate II is fixedly arranged on the lower side of the screw rod rotating shaft, a lifting screw rod is fixedly arranged in the polishing body, a spline shaft III in four-spline connection with the gear is fixedly arranged on the upper side of the lifting screw rod, the spline shaft III penetrates through the support plate and the motor shell, a rotating rod is fixedly arranged on the lower side of the lifting screw rod, a telescopic cavity is arranged in the rotating rod, a spline groove is arranged on the lower side of the rotating rod, two cylinders II which are bilaterally symmetrical are fixedly arranged in the support plate, a piston II is slidably connected in each cylinder II, a piston rod II is fixedly arranged on the piston II, and a moving nut which slides in the, the movable nut can be in threaded connection with the lifting screw rod, and air pipes are connected between the second air cylinder and the first air cylinder respectively.

4. The apparatus for grinding the inner hole and the plane of the metal ring as claimed in claim 3, wherein: the inner hole device comprises a sliding shell fixedly installed on the upper side wall of the telescopic cavity, two horizontal sliding plates which are bilaterally symmetrical are connected in the sliding shell in a sliding mode, a lifting sliding plate is connected in the horizontal sliding plate in a sliding mode, a lifting connecting rod is fixedly arranged on the lifting sliding plate, a sliding plate connecting rod is fixedly arranged on the horizontal sliding plate, a grinding block is fixedly arranged on the sliding plate connecting rod, a fixed block is fixedly arranged on the right side face of the rotating rod, a rotating rod is rotatably connected in the fixed block, a compression spring is connected between the rotating rod and the right side face of the rotating rod, a moving connecting rod is slidably connected on the right side wall of the telescopic cavity, a contact plate is rotatably connected on the right side of the moving connecting rod, the rotating rod is in contact with the contact plate, a moving rack is fixedly arranged on the left side of the moving connecting rod, a fourth rotating shaft and a, the utility model discloses a telescopic elevator, including pivot four, pivot five, belt pulley two and be connected with driving belt between the belt pulley one, pivot five with be connected with the reset torsion spring between the flexible chamber rear side wall, five front sides of pivot have set firmly the rotation wheel, the rotation takes turns to and has set firmly the dwang of two symmetries, every rotate on the dwang be connected with lifting connecting rod fixed connection's rotation cover.