CN115401480A - High-speed eccentric rotating clamping device and eccentric adjusting method thereof - Google Patents

Abstract

The application discloses high-speed eccentric rotary clamping device and eccentric adjusting method thereof, the device includes a rotary disk, a movable base is slidably arranged on the rotary disk, one side of the movable base, which is far away from the rotary disk, is connected with a chuck, an accommodating groove is formed in the rotary disk, a linear driving mechanism connected with the movable base is arranged in the accommodating groove, the linear driving mechanism is used for driving the movable base to slide along the radial direction of the rotary disk, a transmission mechanism connected with the linear driving mechanism is further arranged in the accommodating groove, two groups of balance counter weights respectively located on two sides of the linear driving mechanism are arranged on the transmission mechanism, and the transmission mechanism is used for driving the two balance counter weights to move towards the direction opposite to the moving direction of the movable base.

Description

High-speed eccentric rotating clamping device and eccentric adjusting method thereof

Technical Field

The application relates to the technical field of machine tool fixtures, in particular to a high-speed eccentric rotary clamping device and an eccentric adjusting method thereof.

Background

The eccentricity is widely applied to aspects of a machine tool locking structure, center adjustment, hole system adjustment and the like, high-speed rotation and eccentric clamping are always difficult problems of mechanical technology, the traditional method has high requirements on the technical level of workers, and the requirements can be met only by repeatedly calculating and processing parts with high eccentricity precision.

In the prior art, for a specific workpiece, the clamping processing is carried out by designing matched clamps with different eccentricity distances so as to improve the precision requirement, and when the existing high-speed eccentric rotating clamping device carries out eccentric adjustment, automatic eccentric compensation can not be carried out while the eccentric amount is adjusted, so that the precision is low when the subsequent eccentric compensation adjustment is carried out, and the adjustment efficiency is low.

Disclosure of Invention

The application mainly aims to provide a high-speed eccentric rotation clamping device and an eccentric adjustment method thereof, and aims to solve the technical problem that the existing high-speed eccentric rotation clamping device cannot perform automatic eccentric compensation while adjusting the eccentric amount, so that the eccentric compensation adjustment precision is low.

In order to achieve the purpose, the application provides a high-speed eccentric rotary clamping device, including the rotary disk, be provided with the removal base slidable on the rotary disk, one side that the removal base keeps away from the rotary disk is connected with the chuck, the holding tank has been seted up in the rotary disk, be provided with the linear driving mechanism who is connected with the removal base in the holding tank, linear driving mechanism is used for driving the removal base and radially slides along the rotary disk, still be provided with the drive mechanism who is connected with linear driving mechanism in the holding tank, the last balanced balancing weight that is provided with two sets of difference and is located linear driving mechanism both sides of drive mechanism that is provided with of drive mechanism, drive mechanism is used for driving two balanced balancing weight and moves towards the direction opposite with removal base direction of motion simultaneously.

Optionally, the linear driving mechanism includes a driving lead screw movably connected in the holding tank, a lead screw nut is screwed on the driving lead screw, a connecting assembly is connected to one side of the lead screw nut, the connecting assembly is used for connecting the moving base, two limiting lugs are arranged on one side of the moving base close to the rotating disk, two limiting grooves matched with the corresponding limiting lugs are formed in the rotating disk, the two limiting grooves are respectively located on two sides of the holding tank, and the slotting direction of the limiting grooves is the same as the movement direction of the moving base.

Optionally, the connecting assembly includes a nut seat connected to the lead screw nut, a connecting plate is detachably connected to one side of the nut seat away from the lead screw nut, the connecting plate is used for connecting the movable base, and the connecting plate is located between the two limiting protrusions.

Optionally, the transmission mechanism includes a first bevel gear fixedly sleeved on the driving screw, two sides of the first bevel gear are respectively engaged with second bevel gears, the two second bevel gears are connected with a connecting shaft, the other end of the connecting shaft is connected with a third bevel gear, the third bevel gear is engaged with a fourth bevel gear, the fourth bevel gear is connected with a counterweight screw, the two counterweight screws are respectively positioned on two sides of the driving screw and are parallel to each other, the thread directions of the two counterweight screws are opposite, the balancing counterweight block thread sleeves are positioned on the corresponding counterweight screws, the balancing counterweight block is provided with guiding convex blocks, two guiding grooves matched with the corresponding guiding convex blocks are formed in the inner wall of the accommodating groove, and the slotting direction of the guiding grooves is the same as that of the limiting grooves.

Optionally, the rotating disc comprises a connecting disc, the movable base is arranged on the connecting disc, a chassis is detachably connected to one side, away from the movable base, of the connecting disc, the limiting groove is formed in the end face of the connecting disc, the containing groove is formed in the connecting disc, and the guide groove is formed in the chassis.

Optionally, a structural weight block is arranged on the chassis, the structural weight block is located in the accommodating groove, and the structural weight block is located between the two balance screws.

Optionally, a plurality of bearing seats are arranged on the chassis, and the balance weight screw rod and the connecting shaft are movably connected with the corresponding bearing seats.

Optionally, a supporting seat is arranged in the connecting disc, one end of the driving screw is movably connected to the supporting seat, a through hole communicated with the accommodating groove is formed in one side, away from the supporting seat, of the connecting disc, the other end of the driving screw extends out of the through hole, and a movable sleeve, arranged on the driving screw, is arranged in the through hole.

Optionally, one end of the driving screw rod extending out of the through hole is connected with a polygon prism.

Optionally, the movable base comprises a base block arranged on the rotating disk, and a bearing sleeve is connected to one side of the base block, which is far away from the rotating disk, and is used for connecting the chuck.

Optionally, be provided with aligning mechanism in the bearing housing, aligning mechanism includes the chuck connecting rod, chuck connecting rod one end and chuck threaded connection, and another pot head of chuck connecting rod is equipped with aligning bearing, aligning bearing's outer lane and the inner circle interference fit of bearing housing.

Optionally, a bearing seal ring is further arranged in the bearing sleeve, a bearing end cover is detachably connected to one side of the bearing sleeve, the bearing end cover presses the bearing seal ring to the self-aligning bearing, and the bearing end cover is sleeved on the chuck.

An eccentric adjusting method of the high-speed eccentric rotating clamping device comprises the following steps:

clamping the workpiece on the chuck;

the driving screw rod is rotated to drive the movable base and the workpiece to simultaneously slide along the rotating disc in the radial direction, and the two balancing weights are driven to simultaneously move in the direction opposite to the moving direction of the movable base until the workpiece is adjusted to a preset deflection state;

and fixing the movable base at the current position on the rotating disc by using a fixing bolt to finish eccentric adjustment.

The beneficial effect that this application can realize as follows:

this application is when carrying out eccentric adjustment, accessible linear drive mechanism drives the removal base and radially slides along the rotary disk, thereby drive chuck synchronous movement, realize the eccentric adjustment to the chuck, and accessible drive mechanism's mechanical transmission when linear drive mechanism moves, can drive two balancing weight pieces simultaneously towards the direction removal opposite with removal base direction of motion, balancing weight piece quality is certain, and the quality with whole eccentric moving part is the same, during the eccentricity adjustment, through drive mechanism's effect, make balancing weight piece reverse movement's the amount of movement the same with eccentric moving part's the amount of movement, thereby reach the automatic balancing effect, when this application can realize the stable adjustment of eccentricity, still automatically carry out eccentric compensation, need not follow-up recalculation again and carry out eccentric compensation, thereby guarantee eccentric compensation regulation precision.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings that are required in the detailed description of the present application or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of a high-speed eccentric rotary clamping device according to an embodiment of the present disclosure;

FIG. 2 is a front view of a high-speed eccentric rotary clamping device according to an embodiment of the present disclosure;

FIG. 3 is an exploded view of a high speed eccentric rotating clamping device according to an embodiment of the present application;

FIG. 4 is a schematic view of the internal structure of a rotating disk (with the chassis hidden) in an embodiment of the present application;

FIG. 5 is a schematic view of the structure of the chassis and its attachment accessories in an embodiment of the present application;

fig. 6 is a schematic structural diagram illustrating an assembly of a high-speed eccentric rotating clamping device and a rotating spindle according to an embodiment of the present disclosure.

Reference numerals:

100-rotating disk, 110-connecting disk, 111-accommodating groove, 112-limiting groove, 113-through hole, 120-chassis, 121-guiding groove, 200-moving base, 210-base block, 211-limiting lug, 220-bearing sleeve, 230-bearing end cover, 300-chuck, 400-linear driving mechanism, 410-driving screw, 411-polygon prism, 420-screw nut, 430-nut seat, 440-connecting plate, 450-supporting seat, 460-movable sleeve, 500-transmission mechanism, 510-first bevel gear, 520-second bevel gear, 530-third bevel gear, 540-fourth bevel gear, 550-counterweight screw, 560-connecting shaft, 570-bearing seat, 600-balancing counterweight block, 700-structural counterweight block, 800-centering mechanism, 810-chuck connecting rod, 820-centering bearing, 830-bearing sealing ring, 900-fixing bolt, 1000-spindle connecting piece, 1100-locking nut, 1200-rotating spindle.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

It should be noted that all directional indicators (such as up, down, left, right, front, back, 8230; \8230;) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture, if the specific posture is changed, the directional indicators are changed accordingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope claimed in the present application.

Example 1

Referring to fig. 1 to 6, the embodiment provides a high-speed eccentric rotating clamping device, which includes a rotating disk 100, a moving base 200 is slidably disposed on the rotating disk 100, a chuck 300 is connected to a side of the moving base 200 away from the rotating disk 100, an accommodating groove 111 is disposed in the rotating disk 100, a linear driving mechanism 400 connected to the moving base 200 is disposed in the accommodating groove 111, the linear driving mechanism 400 is configured to drive the moving base 200 to slide along a radial direction of the rotating disk 100, a transmission mechanism 500 connected to the linear driving mechanism 400 is further disposed in the accommodating groove 111, two sets of balancing weights 600 respectively disposed on two sides of the linear driving mechanism 400 are disposed on the transmission mechanism 500, and the transmission mechanism 500 is configured to drive the two balancing weights 600 to move towards a direction opposite to a moving direction of the moving base 200.

In the prior art, taking a lathe as an example, an eccentric workpiece with a short length is turned on a three-jaw chuck, an outer circle of a non-eccentric part in the eccentric workpiece is turned, then a gasket with a pre-selected thickness is arranged between any one jaw of the chuck and a joint surface of the workpiece, the bus and the eccentric distance are corrected, and the workpiece is clamped and then turned; the existing high-speed rotating eccentric adjusting device is usually adjusted only by arranging a cushion block with proper thickness according to the eccentric size of processing and installation, but the adjusting precision is poor, and the accurate eccentric displacement is difficult to obtain; in the existing device, the eccentric device which is complex and inconvenient to assemble and disassemble is often adopted for eccentric adjustment, and although the purpose of eccentric adjustment is achieved, the mechanical failure rate is high, the mechanical efficiency is low, and the energy consumption loss is large; in the existing device, the eccentricity compensation mode of the rotating part is usually to balance weights at the same position or different positions by adding balancing weights with different weights, the selection of the mass of the balancing weights needs to be calculated in advance, the rotating part which completes the primary balancing needs to perform a dynamic balance test again so as to ensure that the high-speed rotation generates micro vibration, although the purpose of eccentricity compensation is achieved, the rotating part needs to be repeatedly installed, and the balancing weights are stacked for many times, so that the consumed time is too long.

Therefore, in this embodiment, during the eccentric adjustment, the linear driving mechanism 400 can drive the moving base 200 to slide along the radial direction of the rotating disc 100, so as to drive the chuck 300 holding the workpiece to move synchronously, thereby implementing the eccentric adjustment of the chuck 300, and the linear driving mechanism 400 can drive the two balancing weights 600 to move simultaneously in the direction opposite to the moving direction of the moving base 200 through the mechanical transmission of the transmission mechanism 500 while operating, the balancing weights 600 have a constant mass and the same mass as the whole eccentric moving part, and during the eccentric adjustment, the moving amount of the balancing weights 600 moving in the reverse direction is the same as the moving amount of the eccentric moving part through the action of the transmission mechanism 500, thereby achieving the automatic balancing effect.

It should be noted that the chuck 300 is a three-jaw chuck, that is, three movable jaws are uniformly distributed on the chuck body, and the three jaws have equal movement distances and centering capability.

As an optional implementation manner, the linear driving mechanism 400 includes a driving screw 410 movably connected in the accommodating groove 111, a screw nut 420 is threaded on the driving screw 410, a connecting assembly is connected to one side of the screw nut 420, the connecting assembly is used for connecting the moving base 200, two limiting protrusions 211 are disposed on one side of the moving base 200 close to the rotating disk 100, two limiting grooves 112 matched with the corresponding limiting protrusions 211 are disposed on the rotating disk 100, the two limiting grooves 112 are respectively located on two sides of the accommodating groove 111, and the slotting direction of the limiting grooves 112 is the same as the moving direction of the moving base 200.

In this embodiment, when the linear driving mechanism 400 operates, the driving lead screw 410 is rotated, because the lead screw nut 420 on the driving lead screw 410 is connected to the moving base 200 through the connecting component, and the moving base 200 and the limiting groove 112 on the rotating disc 100 form a limiting structure through the limiting protrusion 211, that is, the moving base 200 does not rotate with it, and the lead screw nut 420 is also limited and does not rotate with it, so that the rotational motion of the driving lead screw 410 is converted into the linear motion of the lead screw nut 420, when the lead screw nut 420 moves linearly, the connecting component drives the moving base 200 and the chuck 300 to move synchronously with it, and at this time, the limiting protrusion 211 slides stably in the limiting groove 112, so as to achieve the eccentric adjustment of the chuck 300.

As an alternative embodiment, the connection assembly includes a nut seat 430 connected to the lead screw nut 420, a connection plate 440 is detachably connected to a side of the nut seat 430 away from the lead screw nut 420, the connection plate 440 is used for connecting the movable base 200, and the connection plate 440 is located between the two limit protrusions 211. The lead screw nut 420, the nut seat 430 and the connecting plate 440 can be detachably connected through bolts, so that the assembly and the disassembly are convenient.

As an optional implementation manner, the transmission mechanism 500 includes a first bevel gear 510 fixedly sleeved on the driving screw 410, two sides of the first bevel gear 510 are respectively engaged with two second bevel gears 520, two second bevel gears 520 are connected with a connecting shaft 560, the other end of the connecting shaft 560 is connected with a third bevel gear 530, the third bevel gear 530 is engaged with a fourth bevel gear 540, the fourth bevel gear 540 is connected with a counterweight screw 550, the two counterweight screws 550 are respectively located on two sides of the driving screw 410 and are parallel to each other, the thread directions of the two counterweight screws 550 are opposite, the counterweight blocks 600 are threadedly sleeved on the corresponding counterweight screws 550, the counterweight blocks 600 are provided with guide protrusions, two guide grooves 121 matched with the corresponding guide protrusions are formed in the inner wall of the accommodating groove 111, and the slotting directions of the guide grooves 121 and the spacing grooves 112 are the same.

In this embodiment, when the driving screw 410 rotates, the first bevel gear 510 is driven to rotate, thereby driving the second bevel gear 520, the third bevel gear 530 and the fourth bevel gear 540 to rotate synchronously, and finally driving the two counterweight screws 550 to rotate simultaneously, and the rotation directions are different, but because the thread directions of the two counterweight screws 550 are opposite, the directions of the linear motions of the counterweight blocks 600 on the counterweight screws 550 are the same, and similarly, here, because the guiding convex blocks on the counterweight blocks 600 are limited by the guiding grooves 121, the counterweight blocks 600 cannot rotate therewith, thereby converting the rotational motions of the counterweight screws 550 into the linear motions of the counterweight blocks 600, at this time, the guiding convex blocks stably slide in the guiding grooves 121, thereby achieving the purpose of adjusting the eccentricity through the linear driving mechanism 400, and simultaneously driving the two counterweight blocks 600 to move in the reverse directions automatically through the transmission mechanism 500, so that the movement amount of the eccentric moving portion is the same as that of the eccentric moving portion is the eccentric moving portion, thereby achieving the effect of automatic balancing, compared with the existing mode of calculating the mass of the counterweight block and performing the balancing experiment to achieve the eccentric compensation effect, the operation of the synchronous compensation, the embodiment adopts the mode of calculating the synchronous compensation in advance, and the operation of the operation is not only effectively guarantees the eccentric experiment, and the work precision of the work of the compensation, and the work efficiency of the manual work is improved and the work is improved, and the work efficiency is reliable and the work is improved.

It should be noted that, the balance weight block can be in a convex structure as a whole, so as to meet the use requirements. After the eccentric adjustment is completed, at least two fixing bolts 900 can penetrate through the movable base 200 and the rotating disk 100 at the same time to fix the movable base 200 after the eccentric adjustment on the rotating disk 100, at this time, the clamped workpiece is in a predetermined deflection state, the driving screw 410 cannot rotate, the movable base 200 cannot move, the chuck 300 always faces the other end of the clamped workpiece, here, a screw hole matched with the fixing bolt 900 can be formed in the position, corresponding to the limiting bump 211, of the movable base 200, and a kidney-shaped hole is formed in the position, corresponding to the alignment limiting groove 112, of the rotating disk 100, so that the movable base 200 is fixed on the rotating disk 100 at an alignment position through the fixing bolts 900. When the chuck and spindle connecting piece is in work, one surface of the rotating disc 100, which is far away from the chuck 300, is connected with the spindle connecting piece 1000 through a screw, the spindle connecting piece 1000 is fixedly connected with a rotating spindle 1200 (which can be a machine tool spindle) through a locking nut 1100, and the rotating spindle 1200 can drive the rotating disc 100 and the chuck 300 to integrally rotate when rotating.

As an alternative embodiment, the rotating disc 100 includes a connecting disc 110, the moving base 200 is disposed on the connecting disc 110, a chassis 120 (which may be connected by bolts) is detachably connected to a side of the connecting disc 110 away from the moving base 200, a limiting groove 112 is opened on an end face of the connecting disc 110, an accommodating groove 111 is opened in the connecting disc 110, and a guide groove 121 is opened on the chassis 120. The rotary plate 100 is of a split design, which facilitates disassembly and assembly, thereby facilitating subsequent repair or replacement of certain components in the event of failure.

As an alternative embodiment, the chassis 120 is provided with two structural weights 700, the structural weights 700 are located in the accommodating groove 111, and the structural weights 700 are located between two balance screws, where the structural weights 700 are symmetrically arranged on two sides of the driving screw 410, the structural weights 700 can be fixed on the chassis 120 by screws, the structural weights 700 have a certain mass, and when the movable base 200 is located on the rotation axis of the rotating disk 100, the structural weights 700 have a balancing effect on the entire rotating body, so as to further improve the balancing effect.

As an optional implementation manner, a plurality of bearing seats 570 are arranged on the chassis 120, the counterweight lead screw 550 and the connecting shaft 560 are movably connected with the corresponding bearing seats 570, and the corresponding counterweight lead screw 550 and the connecting shaft 560 can be supported on the chassis 120 by the bearing seats 570 and are matched with the rotation motion of the counterweight lead screw 550 and the connecting shaft 560, so that the structure is compact, and the operation is stable and reliable.

As an optional implementation manner, a supporting seat 450 is disposed in the connecting disc 110, one end of the driving screw 410 is movably connected to the supporting seat 450, a through hole 113 communicating with the accommodating groove 111 is formed in one side of the connecting disc 110 away from the supporting seat 450, the other end of the driving screw 410 extends out of the through hole 113, and a movable sleeve 460 disposed on the driving screw 410 is disposed in the through hole 113.

In this embodiment, one end of the driving screw 410 extends out of the through hole 113 on one side of the connecting disc 110, so that the driving screw 410 can be conveniently and externally operated to rotate, during operation, manual operation of a tool can be utilized, the end part of the driving screw 410 can also be connected with a motor output shaft through a coupler, automatic operation is realized, the operation mode is flexible, convenience and rapidness are realized, an external driving mode is adopted, a driving structure does not need to be additionally and independently arranged inside the device, and the structural complexity is reduced.

As an alternative embodiment, the end of the driving screw 410 extending out of the through hole 113 is connected with a polygon prism 411, and the polygon prism 411 can be used for facilitating connection with an external driving component (such as a wrench or a motor), where the polygon prism 411 can be a quadrangular prism or a regular hexagonal prism.

As an alternative embodiment, the moving base 200 includes a base block 210 disposed on the rotating disk 100, and a bearing sleeve 220 is connected to a side of the base block 210 away from the rotating disk 100, and the bearing sleeve 220 is used for connecting the chuck cartridge 300.

In the existing device, the chuck part is often embedded with the rotating body, so that the whole eccentric adjusting device and the chuck part rotate together to generate larger inertia force, but meanwhile, gaps are inevitably generated between assembly bodies or parts in the device, and the eccentric displacement can not be correctly adjusted due to vibration generated during high-speed rotation.

Therefore, as an optional embodiment, a center adjusting mechanism 800 is arranged in the bearing sleeve 220, the center adjusting mechanism 800 includes a chuck connecting rod 810, one end of the chuck connecting rod 810 is in threaded connection with the chuck 300, the other end of the chuck connecting rod 810 is sleeved with a center adjusting bearing 820, an outer ring of the center adjusting bearing 820 is in interference fit with an inner ring of the bearing sleeve 220, and the chuck connecting rod 810 is in interference fit with the inner ring of the center adjusting bearing 820.

In this embodiment, when the chuck 300 rotates, the chuck connecting rod 810 is driven to rotate, and the inner self-aligning bearing 820 has a self-aligning function, is not easily affected by the angle between the shaft and the bearing to the error or the bending of the shaft, compensates the error of the coaxiality, bears the radial and axial loads, is suitable for large inertia force, and is suitable for working under heavy load and high-speed vibration.

It should be noted that the chuck connecting plate 440 may be a stepped part, and the connecting structure is compact and reliable; the chuck 300 has three degrees of freedom with respect to the moving base 200, so that the centering function can be realized when the moving base 200 has a certain offset with respect to the rotation axis of the rotating disk 100; the split design of the chuck 300 and the rotating body enables a user to determine the motion state of the chuck and the rotating body according to the actual state of a workpiece by requiring the chuck 300 to rotate at a high speed or only needing the chuck 300 to play a role in clamping and fixing; the movable base 200 and the rotating disk 100 are also of a split type design, the design can improve the respective operation reliability of each component, when a certain component fails, the whole device can normally operate again only by replacing or maintaining the component, effective replacement of the component is realized, and a large amount of maintenance and manufacturing cost can be saved.

As an optional embodiment, a bearing seal ring 830 is further disposed in the bearing sleeve 220, a bearing end cap 230 is detachably connected to one side of the bearing sleeve 220, the bearing end cap 230 presses the bearing seal ring 830 against the self-aligning bearing 820, and the bearing end cap 230 is sleeved on the chuck 300.

In this embodiment, the bearing seal ring 830 disposed at the self-aligning bearing 820 can not only prevent the lubricant grease from seeping out of the self-aligning bearing 820 due to the increased temperature, but also prevent dust and impurities from entering the interior of the self-aligning bearing 820 to cause abrasion of the self-aligning bearing 820 in the working state, thereby prolonging the service life of the self-aligning bearing 820; it should be noted that the bearing sleeve 220 and the bearing end cover 230 may be connected by a plurality of screws.

Example 2

Referring to fig. 1 to 6, the present embodiment provides an eccentric adjustment method of a high-speed eccentric rotary clamping device as described in embodiment 1, including the steps of:

clamping the workpiece to the chuck cartridge 300;

the driving screw 410 is rotated to drive the movable base 200 and the workpiece to slide along the rotating disc 100 in the radial direction, and drive the two balancing weights 600 to move in the direction opposite to the moving direction of the movable base 200 at the same time until the workpiece is adjusted to a predetermined deflection state;

the moving base 200 at the current position is fixed to the rotating disk 100 using a fixing bolt, thereby completing the eccentric adjustment.

In this embodiment, the driving screw 410 is rotated to drive the movable base 200 and the workpiece to slide radially along the rotating disc 100, so as to achieve eccentric adjustment, and the balancing weight 600 moves in a direction opposite to the moving direction of the movable base 200 until the workpiece is adjusted to a predetermined deflection state, and finally the movable base 200 at the current position is fixed on the rotating disc 100 by using a fixing bolt, so that the eccentric adjustment can be completed quickly, the operation efficiency is high, and the accuracy of the eccentric adjustment and the eccentric compensation is ensured.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.

Claims (13)

1. The utility model provides a high-speed eccentric rotary clamping device, its characterized in that, includes the rotary disk, be provided with the moving base slidable on the rotary disk, the moving base is kept away from one side of rotary disk is connected with the chuck, the holding tank has been seted up in the rotary disk, be provided with in the holding tank with the linear driving mechanism who moves the pedestal connection, linear driving mechanism is used for driving the moving base is followed the rotary disk radially slides, still be provided with in the holding tank with the drive mechanism that linear driving mechanism connects, the last two sets of balanced balancing weights that are located respectively of drive mechanism both sides that are provided with of drive mechanism, drive mechanism is used for driving two balanced balancing weights simultaneously towards with the removal base opposite direction of motion moves.

2. The high-speed eccentric rotary clamping device according to claim 1, wherein the linear driving mechanism comprises a driving screw movably connected in the accommodating groove, a screw nut is sleeved on the driving screw, a connecting assembly is connected to one side of the screw nut, the connecting assembly is used for connecting the moving base, two limiting protrusions are arranged on one side of the moving base, which is close to the rotating disc, two limiting grooves matched with the corresponding limiting protrusions are formed in the rotating disc, the two limiting grooves are respectively located on two sides of the accommodating groove, and the slotting direction of the limiting grooves is the same as the moving direction of the moving base.

3. The high-speed eccentric rotary clamping device according to claim 2, wherein the connecting assembly comprises a nut seat connected with the lead screw nut, a connecting plate is detachably connected to one side of the nut seat far away from the lead screw nut, the connecting plate is used for connecting the movable base, and the connecting plate is located between the two limiting protrusions.

4. The high-speed eccentric rotary clamping device according to claim 2, wherein the transmission mechanism comprises a first bevel gear fixedly sleeved on the driving screw, two sides of the first bevel gear are respectively engaged with a second bevel gear, two of the second bevel gears are connected with a connecting shaft, the other end of the connecting shaft is connected with a third bevel gear, the third bevel gear is engaged with a fourth bevel gear, the fourth bevel gear is connected with a counterweight screw, the two counterweight screws are respectively positioned on two sides of the driving screw and are parallel to each other, the thread directions of the two counterweight screws are opposite, the balancing weight is sleeved on the corresponding counterweight screws in a threaded manner, the balancing weight is provided with a guiding protrusion, the inner wall of the accommodating groove is provided with two guiding grooves matched with the corresponding guiding protrusion, and the grooving direction of the guiding grooves is the same as the grooving direction of the limiting grooves.

5. The high-speed eccentric rotary clamping device as claimed in claim 4, wherein the rotary disk comprises a connecting disk, the movable base is arranged on the connecting disk, a chassis is detachably connected to one side of the connecting disk away from the movable base, the limiting groove is arranged on the end face of the connecting disk, the accommodating groove is arranged in the connecting disk, and the guide groove is arranged on the chassis.

6. The high-speed eccentric rotary clamping device according to claim 5, wherein said chassis is provided with a structural weight, said structural weight is located in said receiving groove, and said structural weight is located between two of said weight screws.

7. The high-speed eccentric rotating clamping device as claimed in claim 5, wherein a plurality of bearing seats are arranged on the chassis, and the balance weight lead screw and the connecting shaft are movably connected with the corresponding bearing seats.

8. The high-speed eccentric rotary clamping device according to claim 5, wherein a supporting seat is disposed in the connecting plate, one end of the driving screw is movably connected to the supporting seat, a through hole is disposed on a side of the connecting plate away from the supporting seat and communicated with the accommodating groove, the other end of the driving screw extends out of the through hole, and a movable sleeve is disposed in the through hole and movably sleeved on the driving screw.

9. A high speed eccentric rotary clamping device as claimed in claim 8 wherein the end of the drive screw extending through the through hole is connected to a polygonal column.

10. A high speed eccentric rotary clamping device according to any of claims 1 to 9 wherein the moving base comprises a base block disposed on the rotary plate, a bearing housing being attached to a side of the base block remote from the rotary plate, the bearing housing being adapted to be attached to the chuck cartridge.

11. The high-speed eccentric rotating clamping device according to claim 10, wherein a centering mechanism is arranged in the bearing sleeve, the centering mechanism comprises a chuck connecting rod, one end of the chuck connecting rod is in threaded connection with the chuck, the other end of the chuck connecting rod is sleeved with a centering bearing, and an outer ring of the centering bearing is in interference fit with an inner ring of the bearing sleeve.

12. The high-speed eccentric rotating clamping device according to claim 11, wherein a bearing seal ring is further disposed in the bearing sleeve, a bearing end cap is detachably connected to one side of the bearing sleeve, the bearing end cap presses the bearing seal ring to the self-aligning bearing, and the bearing end cap is sleeved on the chuck.

13. An eccentric adjustment method of a high speed eccentric rotary clamping device according to claim 4, comprising the steps of:

clamping a workpiece on the chuck;

rotating the driving screw to drive the moving base and the workpiece to simultaneously slide along the radial direction of the rotating disc, and driving the two balancing weights to simultaneously move towards the direction opposite to the moving direction of the moving base until the workpiece is adjusted to a preset deflection state;

and fixing the movable base at the current position on the rotating disc by using a fixing bolt to finish eccentric adjustment.

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