CN216899606U - Fixing device for measuring radial and axial motion errors of rotary platform - Google Patents
Fixing device for measuring radial and axial motion errors of rotary platform Download PDFInfo
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- CN216899606U CN216899606U CN202220656032.7U CN202220656032U CN216899606U CN 216899606 U CN216899606 U CN 216899606U CN 202220656032 U CN202220656032 U CN 202220656032U CN 216899606 U CN216899606 U CN 216899606U
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Abstract
The utility model discloses a fixing device for measuring radial and axial motion errors of a rotary platform, which comprises a measuring table, a side plate and a top plate, wherein a synchronous gear is movably connected in the measuring table, racks are arranged on two sides of the synchronous gear, a moving block is fixedly connected to one end, away from each other, of each rack, the upper end of the moving block is connected with a clamping plate through a connecting rod, an upper sensor assembly is connected to the top plate through a height adjusting device, a connecting rod is movably clamped on the side surface of the side plate, and a side sensor assembly is fixedly connected to the side surface of the connecting rod. This kind of fixing device for rotary platform radial axial motion error measurement is under the effect of synchronous gear and rack for two cardboards remain the symmetry all the time, thereby guarantee rotary platform and last sensor assembly's axiality, improve measuring precision, the installation and the dismantlement of rotary platform of being convenient for simultaneously.
Description
Technical Field
The utility model relates to the technical field of rotary platform error measurement, in particular to a fixing device for measuring radial and axial motion errors of a rotary platform.
Background
The rotary motion platform can be said to be the basis of numerous mechanical equipment, and the revolving axle of arm bottom transport axle, multiaxis lathe etc. all use rotary motion article platform to move, and rotary motion platform's motion accuracy directly influences the motion trail of arm, the size precision of lathe machined part etc. consequently rotary motion platform's motion accuracy is as judging whether qualified important standard of this motion, and rotary motion platform's precision mainly includes two aspects: firstly, the revolving platform is at the positioning accuracy and the repeated positioning accuracy of arbitrary angle, secondly the radial runout and the axial runout of revolving platform at the motion in-process revolving stage, consequently in revolving platform's measurement, use two displacement sensor to measure its precision, but measuring platform and revolving platform's fixed error appears easily, lead to having the deviation between sensor and the revolving platform axis, the accuracy of measuring result can direct influence, moreover revolving platform and measuring platform between the installation with dismantle inconvenient.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a fixing device for measuring radial and axial motion errors of a rotary platform.
In order to achieve the purpose, the utility model designs a fixing device for measuring radial and axial motion errors of a rotary platform, which comprises a measuring table, a side plate and a top plate, the top plate is fixedly connected above the measuring table through a side plate, a synchronous gear is movably connected in the measuring table, racks are arranged on two sides of the synchronous gear, a moving block is fixedly connected with one end of each rack far away from the other end, one of the moving blocks is connected with a cylinder component on the side, the upper end of the moving block is connected with a clamping plate through a connecting rod, the side surfaces of the clamping plates, which are close to each other, are provided with clamping blocks, the measuring table is provided with a base, a rotary platform and a round table, the base, the rotary platform and the circular truncated cone are sequentially connected from bottom to top, the top plate is connected with an upper sensor assembly through a height adjusting device, the side of the side plate is movably clamped with a connecting rod, and the side of the connecting rod is fixedly connected with a side sensor assembly.
Furthermore, a first limiting rod is fixedly connected in the measuring table and penetrates through the moving block and the rack.
Still further, a pull rod penetrates through the upper end of the clamping plate, a pressing plate is fixedly connected to the bottom end of the pull rod, and a spring is arranged between the pull rod and the clamping plate.
Still further, height adjusting device includes lead screw and drive arrangement the lead screw runs through the setting on the roof, the lead screw transmission is connected with drive arrangement, go up sensor subassembly and lead screw threaded connection.
Still further, the bottom end of the screw rod is fixedly connected with a limiting plate, and the outer diameter of the limiting plate is larger than that of the screw rod.
Still further, roof bottom fixedly connected with second gag lever post, sensor subassembly setting on the second gag lever post lower extreme runs through.
Still further, the curb plate side is provided with the spacing groove, connecting rod tip fixedly connected with stopper, stopper activity joint is in the spacing inslot.
Still further, be provided with the through-hole on the measuring platform and the connecting rod runs through the through-hole setting.
The utility model has the beneficial effects that:
the fixing device for measuring the radial and axial motion errors of the rotary platform pushes the racks to move through the cylinder component, under the action of the synchronous gear and the racks, the two racks drive the two moving blocks to simultaneously approach or separate from each other, the distance between the two clamping plates is adjusted, the two clamping plates are used for clamping the base of the rotary platform on the measuring table, and the two clamping plates are always kept symmetrical by the synchronous moving action of the two racks, so that the coaxiality of the rotary platform and an upper sensor component is ensured, the measuring precision is improved, the measuring errors are avoided as much as possible, the rotary platform is convenient to mount and dismount, the height of the side sensor component can be adjusted up and down by utilizing the movable clamping structure of the connecting rod and the side plates, the test tools with different heights are adapted, the use flexibility of the device is improved, after the data acquisition is finished and after the discrete Fourier transform is utilized, and zeroing the discrete numerical values near the peak value, and performing inverse Fourier transform to obtain actual radial run-out and axial run-out so as to ensure the accuracy of data.
Drawings
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a schematic perspective view of a measuring table according to the present invention;
FIG. 3 is a top cross-sectional view of a measurement station of the present invention;
fig. 4 is an enlarged schematic view of a portion a of fig. 1.
In the figure: the device comprises a measuring table 1, a side plate 2, a top plate 3, a synchronizing gear 4, a rack 5, a moving block 6, a cylinder assembly 7, a connecting rod 8, a clamping plate 9, a first limiting rod 10, a clamping block 11, a pull rod 12, a pressing plate 13, a spring 14, a base 15, a rotary platform 16, a circular truncated cone 17, a height adjusting device 18, a screw rod 19, a driving device 20, a second limiting rod 21, a limiting plate 22, an upper sensor assembly 23, a connecting rod 24, a side sensor assembly 25, a limiting groove 26 and a limiting block 27.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The fixing device for measuring the radial and axial movement errors of the rotary platform shown in fig. 1-4 comprises a measuring table 1, side plates 2 and a top plate 3, wherein the top plate 3 is fixedly connected above the measuring table 1 through the side plates 2, the measuring table 1, the side plates 2 and the top plate 3 form an integral frame structure of the device, two side plates 2 can be symmetrically arranged and fixedly connected to the upper end of the measuring table 1, and the top plate 3 is fixedly connected to the upper end of the side plates 2 to provide space for installing other components in the device;
the measuring table 1 is internally and movably connected with a synchronous gear 4, racks 5 are arranged on two sides of the synchronous gear 4, moving blocks 6 are fixedly connected to one ends, away from each other, of the racks 5, a cylinder component 7 is connected to the side face of one of the moving blocks 6, the synchronous gear 4 is arranged in the center of the measuring table 1 and can rotate in the measuring table 1, the racks 5 are arranged on two sides of the synchronous gear 4, the two racks 5 and the synchronous gear 4 are meshed with each other, after the cylinder component 7 is started, one moving block 6 connected with the cylinder component can be driven to move leftwards or rightwards, so that the rack 5 moves, under the meshing action of the racks 5 and the synchronous gear 4, the synchronous gear 4 is driven to rotate, and then the other rack 5 moves synchronously, so that the two moving blocks 6 are close to or away from each other at the same time, and the two moving blocks 6 are always kept in a symmetrical state;
the upper end of the moving block 6 is connected with a clamping plate 9 through a connecting rod 8, the side surfaces of the clamping plates 9, which are close to each other, are provided with clamping blocks 11, the measuring table 1 is provided with a base 15, a rotary platform 16 and a circular truncated cone 17, the base 15, the rotary platform 16 and the circular truncated cone 17 are sequentially connected from bottom to top, a bearing is arranged in the rotary platform 16 and can drive the circular truncated cone 17 above to rotate, during testing, the testing tool is arranged and fixed on the circular table 17, so that the rotary product table 16 rotates at a certain rotating speed, the connecting rod 8 penetrates through the measuring table 1, the clamping plate 9 is positioned above the measuring table 1, when the moving blocks 6 are close to or far away from each other at the same time, the connecting rod 8 can drive the two clamping plates 9 to be close to or far away from each other at the same time, the distance between the two clamping blocks 11 is adjusted until the two clamping blocks 11 are clamped in the side surface groove of the base 15, the position definition of the base 15 is achieved such that the base 15 is located at the center of the measuring table 1;
the top plate 3 is connected with an upper sensor assembly 23 through a height adjusting device 18, the upper sensor assembly 23 and the circular truncated cone 17 on the measuring table 1 are coaxially arranged, the measuring accuracy is guaranteed, the height adjusting device 18 is arranged on the top plate 3, the height of the upper sensor assembly 23 can be adjusted through the height adjusting device 18, the upper sensor assembly 23 is suitable for measuring pieces with different sizes, the application range is improved, the upper sensor assembly 23 is a displacement sensor, and the axial displacement of the upper sensor assembly 23 is measured;
the side surface of the side plate 2 is movably clamped with a connecting rod 24, the side surface of the connecting rod 24 is fixedly connected with a side sensor assembly 25, by utilizing a movable clamping structure between the connecting rod 24 and the side plate 2, the connecting rod 24 can move up and down to drive the side sensor assembly 25 to move up and down, the measuring precision is improved, the side sensor assembly 25 is a displacement sensor and can measure radial displacement, when in measurement, the rotary platform 16 rotates at a certain rotating speed, the upper sensor assembly 23 and the side sensor assembly 25 sample at a certain sampling rate, the collected result has errors influenced by the gravity center position of the rotary platform and the rotating precision of a bearing and also has errors generated when the assembly errors rotate around the axis, at the moment, the collected data is subjected to discrete Fourier transform, a peak value exists near the inherent frequency of the rotating speed, and a plurality of discrete values near the peak value are zeroed, and after the inverse Fourier transform is carried out, the actual data of radial run-out and axial run-out can be obtained.
The working process of the fixing device for measuring the radial and axial motion errors of the rotary platform comprises the following steps:
when the device is used, firstly, the base 15, the rotary platform 16 and the circular truncated cone 17 are placed on the measuring table 1, after the air cylinder assembly 7 is started, one moving block 6 connected with the air cylinder assembly can be driven to move leftwards or rightwards, so that the rack 5 moves, under the meshing action of the rack 5 and the synchronous gear 4, the synchronous gear 4 is driven to rotate, so that the other rack 5 moves synchronously, the two moving blocks 6 are close to or away from each other at the same time, the two moving blocks 6 are always kept in a symmetrical state, the two clamping plates 9 can be driven to be close to or away from each other at the same time through the connecting rod 8, the distance between the two clamping blocks 11 is adjusted until the two clamping blocks 11 are clamped into the side grooves of the base 15, the position of the base 15 is limited, the base 15 is located at the center of the measuring table 1, the testing tool is installed and fixed on the circular truncated cone 17, so that the rotary table 16 rotates at a certain rotating speed, the upper sensor assembly 23 and the side sensor assembly 25 sample at a certain sampling rate, the collected result has errors influenced by the gravity center position of the rotary table top and the rotation precision of the bearing and errors generated when the assembly errors rotate around the axis, the collected data is subjected to discrete Fourier transform, a peak value is generated near the natural frequency of the rotating speed, a plurality of discrete numerical values near the peak value are zeroed, and after inverse Fourier transform, the actual data of radial run-out and axial run-out can be obtained.
The first limiting rod 10 is fixedly connected in the measuring table 1, the first limiting rod 10 penetrates through the moving block 6 and the rack 5, the number of the first limiting rods 10 can be two, the two racks 5 penetrate through the first limiting rod respectively, and limiting and guiding effects are achieved on movement of the rack 5 and the moving block 6.
The upper end of cardboard 9 runs through and is provided with pull rod 12, and 12 bottom fixedly connected with clamp plates 13 of pull rod are provided with spring 14 between pull rod 12 and the cardboard 9, run through on the up end of cardboard 9 and be provided with pull rod 12, and 11 joints of fixture block finish the back, upwards stimulate pull rod 12 for 13 butts of clamp plate to the upper end of base 15, under the effect of spring 14, make the inseparable butt in clamp plate 13 and 15 upper ends of base, improve stability.
The height adjusting device 18 comprises a screw rod 19 and a driving device 20, the screw rod 19 penetrates through the top plate 3, the screw rod 19 is in transmission connection with the driving device 20, an upper sensor assembly 23 is in threaded connection with the screw rod 19, the driving device 20 can drive the screw rod 19 to rotate, the upper sensor assembly 23 can move up and down to adjust the height under the threaded connection effect of the screw rod 19 and the upper sensor assembly 23, and a corresponding limiting mechanism can be arranged to limit the rotation of the upper sensor assembly 23.
The bottom end of the screw rod 19 is fixedly connected with a limiting plate 22, the outer diameter of the limiting plate 22 is larger than that of the screw rod 19, the limiting plate 22 limits the upper sensor assembly 23, and the upper sensor assembly is prevented from falling off from the screw rod 19.
2 sides of curb plate are provided with spacing groove 26, connecting rod 24 tip fixedly connected with stopper 27, stopper 27 activity joint is at spacing groove 26, and when connecting rod 24 at the in-process that reciprocates, stopper 27 can remove in spacing groove 26, plays spacing guide effect to connecting rod 24, for the stability of guaranteeing connecting rod 24, can set up locking mechanism at the activity joint structurally.
A through hole is formed in the measuring table 1, the connecting rod 8 penetrates through the through hole, the connecting rod 8 can move left and right in the through hole, and the connecting rod 8 is limited and guided.
Other parts not described in detail are prior art. Although the present invention has been described in detail with reference to the above embodiments, it is only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and the embodiments are within the scope of the present invention.
Claims (8)
1. The utility model provides a rotary platform radial axial movement error measuring uses fixing device, includes measuring table (1), curb plate (2) and roof (3), its characterized in that: the top plate (3) is fixedly connected above the measuring table (1) through a side plate (2), a synchronous gear (4) is movably connected in the measuring table (1), racks (5) are arranged on two sides of the synchronous gear (4), a moving block (6) is fixedly connected to one end, far away from each other, of each rack (5), a cylinder assembly (7) is connected to one side face of each moving block (6), a clamping plate (9) is connected to the upper end of each moving block (6) through a connecting rod (8), a clamping block (11) is arranged on the side face, close to each other, of each clamping plate (9), a base (15), a rotary platform (16) and a circular table (17) are arranged on the measuring table (1), the base (15), the rotary platform (16) and the circular table (17) are sequentially connected from bottom to top, and the top plate (3) is connected with an upper sensor assembly (23) through a height adjusting device (18), the side surface of the side plate (2) is movably clamped with a connecting rod (24), and the side surface of the connecting rod (24) is fixedly connected with a side sensor assembly (25).
2. The fixture for measuring radial and axial motion errors of a rotating platform according to claim 1, wherein: the measuring table is characterized in that a first limiting rod (10) is fixedly connected in the measuring table (1), and the first limiting rod (10) penetrates through the moving block (6) and the rack (5).
3. The fixture for measuring radial and axial motion errors of a rotating platform according to claim 1, wherein: the clamping plate is characterized in that a pull rod (12) penetrates through the upper end of the clamping plate (9), a pressing plate (13) is fixedly connected to the bottom end of the pull rod (12), and a spring (14) is arranged between the pull rod (12) and the clamping plate (9).
4. The fixture for measuring radial and axial motion errors of a rotating platform according to claim 1, wherein: the height adjusting device (18) comprises a screw rod (19) and a driving device (20), the screw rod (19) penetrates through the top plate (3), the driving device (20) is connected to the screw rod (19) in a transmission mode, and the upper sensor assembly (23) is in threaded connection with the screw rod (19).
5. The fixture for measuring radial and axial motion errors of the rotary platform according to claim 4, wherein: the bottom end of the screw rod (19) is fixedly connected with a limiting plate (22), and the outer diameter of the limiting plate (22) is larger than that of the screw rod (19).
6. The fixture for measuring radial and axial motion errors of the rotary platform according to claim 4, wherein: roof (3) bottom fixedly connected with second gag lever post (21), sensor subassembly (23) setting on running through is run through to second gag lever post (21) lower extreme.
7. The fixture for measuring radial and axial motion errors of a rotating platform according to claim 1, wherein: curb plate (2) side is provided with spacing groove (26), connecting rod (24) tip fixedly connected with stopper (27), stopper (27) activity joint is in spacing groove (26).
8. The fixture for measuring radial and axial motion errors of a rotating platform according to claim 1, wherein: the measuring table (1) is provided with a through hole, and the connecting rod (8) penetrates through the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220656032.7U CN216899606U (en) | 2022-03-24 | 2022-03-24 | Fixing device for measuring radial and axial motion errors of rotary platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220656032.7U CN216899606U (en) | 2022-03-24 | 2022-03-24 | Fixing device for measuring radial and axial motion errors of rotary platform |
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| CN216899606U true CN216899606U (en) | 2022-07-05 |
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| CN202220656032.7U Active CN216899606U (en) | 2022-03-24 | 2022-03-24 | Fixing device for measuring radial and axial motion errors of rotary platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388741A (en) * | 2022-10-26 | 2022-11-25 | 宁波双林汽车部件股份有限公司 | Lead screw and rotation stopping disc jumping detection device |
-
2022
- 2022-03-24 CN CN202220656032.7U patent/CN216899606U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388741A (en) * | 2022-10-26 | 2022-11-25 | 宁波双林汽车部件股份有限公司 | Lead screw and rotation stopping disc jumping detection device |
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