CN111590342B

CN111590342B - Numerical control machine tool rotary table

Info

Publication number: CN111590342B
Application number: CN202010514761.4A
Authority: CN
Inventors: 何超; 吴妲
Original assignee: Kunshan Xigang Hardware Machinery Co ltd
Current assignee: KUNSHAN XIGANG HARDWARE MACHINERY CO.,LTD.
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2022-01-14
Anticipated expiration: 2040-06-08
Also published as: CN111590342A

Abstract

The invention provides a numerical control machine tool revolving platform which comprises a main shaft, wherein a main shaft clutch is arranged on one side of a rotating tooth of the main shaft, the main shaft clutch is used for splitting and closing the main shaft and the rotating tooth, a clamp is arranged on an auxiliary shaft, the auxiliary shaft is connected with the main shaft through a transmission belt, a steering gear for reversing is arranged on the transmission belt, limiting rolling wheels are symmetrically arranged on two sides inside the steering gear, and a plurality of adapting wheels which are arranged in a straight line are arranged on the circumference of each limiting rolling wheel in an array manner; the invention avoids different deformation amounts of the transmission belt with different distances or different sizes during twisting, reduces friction loss, can fix the relative position through the steering gear, keeps the position and the deformation angle of the transmission belt during angle conversion, ensures that the transmission belt has higher stability during operation, prevents the transmission belt from jumping so as to influence the processing precision, well protects the abrasion of the transmission belt, prolongs the service life, reduces the equipment cost and improves the processing precision.

Description

Numerical control machine tool rotary table

Technical Field

The invention relates to the technical field of numerical control machines, in particular to a rotary table of a numerical control machine.

Background

The numerical control machine tool rotary table is a supplement of a mode of changing an original machined part into a main shaft and not moving, the traditional numerical control machine tool only moves a cutter on an X axis or a Y axis so as to machine the part, the machining mode has the defect that a rotation angle is limited, so a movable rotary table exists, at present, the rotary table rotates in four axes, two servo motors which are mutually vertical to each other are adopted to respectively control the rotary tables rotating in two directions, the mode can realize linkage and independent movement of the two axes, the structure increases corresponding volume and cost, in the machining process aiming at small parts, a large-sized numerical control machine tool is adopted to easily cause resource waste, the large material is small in size, therefore, in order to produce related parts, the numerical control machine tool is miniaturized, and is simplified in cost and structure, so that corresponding requirements are met, the structure can not use the rotary table with double servo motors, so that a structure which can enable the single servo motor to control the rotation of two directional shafts is needed, and the rotary table can operate independently or in linkage is the technical problem to be solved by the invention.

Disclosure of Invention

The present invention aims to provide a numerically controlled machine turret which overcomes or at least partially solves the above mentioned problems, to solve the problem of multiple servomotors used in a multi-axis turret and the run-out caused by belt reversals.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the invention provides a numerical control machine tool rotary table, which comprises a servo motor, a clamp and a main shaft, wherein the servo motor is fixedly connected with the main shaft, the main shaft is vertically arranged with the central line of the clamp, the other end of the main shaft is provided with a rotating tooth, a main shaft clutch is arranged on one side of the rotating teeth of the main shaft and used for disassembling and closing the main shaft and the rotating teeth, the rotary gear is self-locked and can be fixed at any position, the fixture is arranged on an auxiliary shaft, the other end of the auxiliary shaft is provided with a belt wheel for transmission, the auxiliary shaft is connected with the main shaft through a transmission belt, a steering gear for reversing is arranged on the transmission belt and is of a groove-shaped structure, limiting rolling wheels are symmetrically arranged on two sides inside the steering gear and can move on the steering gear in a telescopic and linear mode, the limiting rolling wheels are used for relieving the twisting degree of the two sides of the transmission belt, and a plurality of adaptation wheels which are arranged in a straight line are arranged on the circumference of the limiting rolling wheels in an array mode;

the steering gear comprises a steering gear groove structure, a steering gear groove structure and a transmission mechanism, wherein the steering gear groove structure is in a step shape, the steps are a first step, a second step and a third step from outside to inside in sequence, the bottom of the third step is provided with a plurality of transmission rollers arranged in a clearance mode, two ends of each transmission roller are inserted into the second step, the upper plane of each transmission roller is higher than the plane of the second step, a plurality of movable limiting rolling wheels are installed in the first step in the opposite direction, a plurality of steering grooves used for installing the limiting rolling wheels are formed in the first step, and the steering grooves are used for inserting adjusting rods;

the limiting rolling wheel passes through the roller wheel bracket, the tail end of the roller wheel bracket is fixedly provided with an adjusting rod, the other end of the adjusting rod is fixedly provided with a spring, the spring is arranged in the steering groove, a first rod limiting block is arranged at the port position of the steering groove, a second rod limiting block is arranged at the end position of the adjusting rod, and the first rod limiting block and the second rod limiting block act together to limit the adjusting rod from falling off the steering groove;

the axial one side of adaptation wheel is provided with the regulation post, adjusts the radial position at spacing roll wheel of post insert installation, and a plurality of adaptation wheels are annular array and linear permutation respectively and set up in the radial and axial of spacing roll wheel, and the equal clearance setting of a plurality of adaptation wheels.

As a further aspect of the present invention, there is only one servo motor for controlling the main shaft and the auxiliary shaft.

As a further scheme of the invention, an auxiliary shaft clutch is arranged on the auxiliary shaft, the structure of the auxiliary shaft clutch is the same as that of the main shaft clutch, and a separator is also arranged on the auxiliary shaft clutch and used for separating the rotating auxiliary shaft from the clamp.

As a further scheme of the invention, the steering gears are of a combined structure, the two steering gears are connected through the adjusting shaft, the two ends of the adjusting shaft are of a threaded structure, the adjusting shaft shortens the distance between the two steering gears through the action of threads, and the adjusting shaft is connected with the shell through the hook in the shell.

As a further scheme of the invention, a plurality of roller grooves for mounting the adaptive wheels are arranged in the radial direction of the limiting rolling wheel, adjusting columns are inserted into the roller grooves, and elastic rubber for supporting and recovering is arranged in the adjusting columns and the roller grooves.

As a further scheme of the invention, the interior of the elastic rubber is of a honeycomb structure and forms a support, the adaptive wheel is installed at the top end of the adjusting column through a rotating shaft, a limiting ring for preventing the adaptive wheel from being stuck is arranged on the adjusting column, a gap is reserved between the limiting ring and the adaptive wheel, a first column limiting block is arranged at the tail end of the adjusting column, and the first column limiting block is matched with a second column limiting block arranged on the roller groove for limiting.

As a further scheme of the invention, a central hole is formed in the middle of the limiting rolling wheel, and the limiting rolling wheel is arranged on the roller wheel bracket in an inserting mode through the central hole.

The invention provides a numerical control machine tool revolving platform, which has the beneficial effects that: the invention connects two mutually vertical shafts through the transmission belt, and the two shafts and the actuating mechanism are in a detachable structure, the structure realizes independent movement or linkage movement of the two shafts, thereby having the same function and action as a double servo motor, and the transmission belt adopts a structure of a steering gear, the steering gear enables the transmission belt to naturally deform, and rolling friction is formed between the steering gear and the transmission belt, and the transmission belt can adapt to the shortening or extending of different twisting degrees and different distances, and always keeps a plurality of limit rolling wheels and adaptive wheels in contact with the outer layer of the transmission belt, thereby avoiding different deformation amounts of the transmission belt with different distances or different sizes during twisting, reducing friction loss, fixing the relative position through the steering gear, keeping the position and the deformation angle of the transmission belt during angle conversion, and enabling the transmission belt to have higher stability during operation, the processing precision is prevented from being influenced by jumping in the transmission, the abrasion of the transmission belt is well protected, the service life is prolonged, the equipment cost is reduced, and the processing precision is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic diagram of an overall three-dimensional structure according to an embodiment of the present invention.

Fig. 2 is a schematic top view of a steering gear according to an embodiment of the present invention.

Fig. 3 is a schematic front structural diagram of a steering gear according to an embodiment of the present invention.

Fig. 4 is an enlarged structural schematic view of a limiting rolling wheel provided in the embodiment of the present invention.

Fig. 5 is a schematic view of an adaptive wheel mounting structure provided in an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a front surface of an adaptive wheel according to an embodiment of the present invention.

Fig. 7 is a schematic view of an installation structure of an adaptive wheel and a limiting rolling wheel provided in an embodiment of the present invention.

In the figure: 1. a servo motor; 2. a clamp; 21. a clamp clutch; 22. a pulley; 23. a separator; 3. a main shaft; 31. a main shaft clutch; 32. rotating the teeth; 4. a diverter; 41. an adjustment shaft; 42. a driving roller; 43. a transmission belt; 44. a first step; 45. a second step; 46. a third step; 47. a steering groove; 5. limiting rolling wheels; 51. a roller bracket; 52. adjusting a rod; 521. a first lever stopper; 522. a second lever stopper; 53. a spring; 54. a central bore; 55. an elastic rubber; 56. a roller groove; 6. an adaptive wheel; 61. an adjustment column; 611. a first column stopper; 612. a second column limiting block; 62. a rotating shaft; 63. a limit ring.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Referring to fig. 1 to 7, a numerical control machine tool turret provided by an embodiment of the present invention includes a servo motor 1, a fixture 2, and a main shaft 3, the servo motor 1 is fixedly connected to the main shaft 3, the main shaft 3 is disposed perpendicular to a center line of the fixture 2, the other end of the main shaft 3 is mounted with a rotary tooth 32, the rotary tooth 32 is matched with teeth in a housing to enable the fixture 2 to rotate around the main shaft 3, the main shaft 3 is provided with a main shaft clutch 31 on one side of the rotary tooth 22, the main shaft clutch 31 is used for separating and closing the main shaft 3 and the rotary tooth 32, and the rotary tooth 32 can be fixed at any position with self-locking, the fixture 2 is mounted on a secondary shaft, the other end of the secondary shaft is provided with a pulley 22 for transmission, the secondary shaft is connected with the main shaft 3 through a transmission belt 43, a steering gear 4 for reversing is mounted on the transmission belt 43, the steering gear 4 bends a middle portion of the transmission belt 43 to 90 degrees, steering gear 4 is the conversion equipment of drive belt 43 switching-over, make drive belt 43 can the natural rotation, avoid causing drive belt 43 to be in special-shaped state for a long time, thereby reduce the life-span of drive belt, the partial deviation of moment when also can not causing the transmission, lead to rotating unstable condition, steering gear 4 is the cell type structure, steering gear 4 inside bilateral symmetry is provided with spacing rolling wheel 5, spacing rolling wheel 5 can be on steering gear 4 flexible rectilinear movement, spacing rolling wheel 5 is used for alleviating the distortion degree of drive belt 43 both sides, the array is provided with the adaptation wheel 6 of a plurality of word ranks on the circumference of spacing rolling wheel 5, adaptation wheel 6 can be at spacing rolling wheel 5 radial rectilinear movement, thereby the relocation, the form of the distortion of adaptation drive belt 43.

Preferably, servo motor 1 only has one and is connected with main shaft 3, reduces the volume of whole digit control machine tool, and is lighter to the processing of small-size part to have the function with the same independent motion of two servo motors or synchronous movement, reduce the energy consumption and still practice thrift the cost.

Preferably, the auxiliary shaft is provided with an auxiliary shaft clutch, the structure of the auxiliary shaft clutch is the same as that of the main shaft clutch 31, in order to facilitate the use of the clamp 2, the auxiliary shaft clutch is further provided with a separator 23, and the separator 23 is used for separating the rotary auxiliary shaft from the clamp 2, so that the clamp 2 rotates around the main shaft 3 alone to perform arc-shaped cutting on a specific position, the machining direction of numerical control machining is increased, and multi-dimensional machining is realized.

Preferably, the steering gears 4 are combined, the two steering gears 4 are connected through an adjusting shaft 41, two ends of the adjusting shaft 41 are in threaded structures, the adjusting shaft 41 shortens the distance between the two steering gears 4 through the action of threads so as to adapt to the twisting form generated during the steering of the transmission belt 43, and the adjusting shaft 41 is connected with the shell through a hook inside the shell so as to enable the steering gears 4 to have relatively stable positions.

Preferably, the groove-shaped structure of the steering gear 4 is stepped, the steps are a first step 44, a second step 45 and a third step 46 from outside to inside in sequence, a plurality of transmission rollers 42 arranged at intervals are arranged at the bottom of the third step 46, two ends of each transmission roller 42 are inserted into the corresponding second step 45, the upper plane of each transmission roller 42 is higher than the plane of the corresponding second step 45, a plurality of movable limiting rolling wheels 5 are arranged in the corresponding direction of the first step 44, the limiting rolling wheels 5 can extend out or shrink according to the different bending degrees of the transmission belt 43, and therefore long-term rigid contact cannot be caused to the transmission belt 43, the abrasion degree of the transmission belt 43 is reduced, the service life of the transmission belt 43 is prolonged, a plurality of steering grooves 47 used for mounting the limiting rolling wheels 5 are formed in the first step 44, and the steering grooves 47 are used for inserting the adjusting rods 52.

Preferably, the limiting rolling wheel 5 passes through the roller bracket 51, the roller bracket 51 can enable the limiting rolling wheel 5 to rotate freely, the tail end of the roller bracket 51 is fixedly provided with an adjusting rod 52, the other end of the adjusting rod 52 is fixedly provided with a spring 53, the spring 53 is arranged in the steering groove 47, a first rod limiting block 521 is arranged at the port position of the steering groove 47, a second rod limiting block 522 is arranged at the end position of the adjusting rod 52, and the first rod limiting block 521 and the second rod limiting block 522 act together to limit the adjusting rod 52 from falling off the steering groove 47.

Preferably, a central hole 54 is formed in the middle of the limit rolling wheel 5, the limit rolling wheel 5 is inserted and installed on the roller bracket 51 through the central hole 54, and the limit rolling wheel 5 can roll freely on the roller bracket 51.

Preferably, the axial one side of adaptation wheel 6 is provided with adjusts post 61, adjust post 61 and insert and install the radial position at spacing rolling wheel 5, a plurality of adaptation wheels 6 are respectively annular array and the linear permutation sets up in spacing rolling wheel 5 radially and axially, the equal clearance setting of a plurality of adaptation wheels 6, the interval of two adaptation wheels 6 is between 1-10M M, adaptation wheel 6 is as secondary adjustment mechanism, can secondary adjustment on the radial position of spacing rolling wheel 5, make the cooperation of drive belt 43 and steering gear 4 more suitable, further reduce the wearing and tearing of drive belt 43, finally realize the purpose that turns to of drive belt 43.

Preferably, a plurality of roller grooves 56 for mounting the adaptive wheel 6 are radially arranged on the limiting rolling wheel 5, an adjusting column 61 is inserted into the roller grooves 56, elastic rubber 55 for supporting and restoring is arranged in the adjusting column 61 and the roller grooves 56, the elastic rubber 55 is of a honeycomb structure and can form a support, so that the adaptive wheel 6 is supported and contracted, the adaptive wheel 6 is mounted at the top end of the adjusting column 61 through a rotating shaft, a limiting ring 63 for preventing the adaptive wheel 6 from being stuck is arranged on the adjusting column 61, a gap is reserved between the limiting ring 63 and the adaptive wheel 6, a first column limiting block 611 is arranged at the tail end of the adjusting column 61, the first column limiting block 611 is matched with a limiting block 612 arranged on the roller grooves 56 for limiting, so that the adaptive wheel 6 cannot fall from the second roller grooves 56.

Preferably, the clutch is an existing high-speed rotating clutch, which is a prior art clutch and has a mature application in various fields, and is not described as an important point in the present application.

The working principle of the invention is as follows: the servo motor 1 rotates to drive the main shaft 3 to rotate, the clamp 2 rotates through the transmission belt 43 between the main shaft 3 and the auxiliary shaft, the half-width main shaft 3 and the half-width auxiliary shaft both rotate under the action of the servo motor all the time, the main shaft clutch 31 acts to combine the two separated main shafts 3 to rotate when the main shaft 3 needs to rotate, when the clamp 2 needs to rotate, the auxiliary shaft clutch combines the two separated auxiliary shafts to rotate the clamp 2, the transmission belt 43 deforms when twisted, when the steering gear 4 does not act, the twisted transmission belt 43 vibrates when being connected with the main shaft 3 or the auxiliary shaft, thereby the jumping of the main shaft 3 or the auxiliary shaft rotation is influenced, the machining precision is influenced, the steering gear 4 can keep the normal structure of the twisting part of the transmission belt 43 when outputting, and the steering gear 4 stretches out and draws back on the limit rolling wheel 5 and the adaptation wheel 6 on the limit rolling wheel 5 according to the twisting degree of the transmission belt 43, thereby reducing the friction between the drive belt 43 and the diverter 4 and reducing the wear of the drive belt 43, and finally achieving the function of reversing the drive belt 43 and maintaining the form of the drive belt 43.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A numerical control machine tool rotary table comprises a servo motor (1), a clamp (2) and a main shaft (3), wherein the servo motor (1) is fixedly connected with the main shaft (3), the main shaft (3) is perpendicular to the central line of the clamp (2), and a rotating tooth (32) is installed at the other end of the main shaft (3), the numerical control machine tool rotary table is characterized in that a main shaft clutch (31) is arranged on one side of the rotating tooth (32) of the main shaft (3), the main shaft clutch (31) is used for separating and closing the main shaft (3) and the rotating tooth (32), the rotating tooth (32) is provided with a self-locking function and can be fixed at any position, the clamp (2) is installed on an auxiliary shaft, a belt wheel (22) for transmission is arranged at the other end of the auxiliary shaft, the auxiliary shaft is connected with the main shaft (3) through a transmission belt (43), a steering gear (4) for reversing is installed on the transmission belt (43), and the steering gear (4) is of a groove type structure, limiting rolling wheels (5) are symmetrically arranged on two sides inside the steering gear (4), the limiting rolling wheels (5) can stretch out and draw back to move linearly on the steering gear (4), the limiting rolling wheels (5) are used for relieving the distortion degree of two sides of the transmission belt (43), and a plurality of adaptation wheels (6) which are arranged in a straight line are arranged on the circumference of the limiting rolling wheels (5) in an array manner;

the groove type structure of the steering gear (4) is in a step shape, a first step (44), a second step (45) and a third step (46) are sequentially arranged on the steps from outside to inside, a plurality of transmission rollers (42) arranged at intervals are arranged at the bottom of the third step (46), two ends of each transmission roller (42) are inserted into the second step (45), the upper plane of each transmission roller (42) is higher than the plane of the second step (45), a plurality of movable limiting rolling wheels (5) are installed on the first step (44) in the opposite direction, a plurality of steering grooves (47) used for installing the limiting rolling wheels (5) are formed in the first step (44), and the steering grooves (47) are used for inserting adjusting rods (52);

the limiting rolling wheel (5) is mounted through a roller support (51), an adjusting rod (52) is fixedly mounted at the tail end of the roller support (51), a spring (53) is fixedly mounted at the other end of the adjusting rod (52), the spring (53) is arranged in a steering groove (47), a first rod limiting block (521) is arranged at the port position of the steering groove (47), a second rod limiting block (522) is arranged at the end point position of the adjusting rod (52), and the first rod limiting block (521) and the second rod limiting block (522) act together to limit the adjusting rod (52) from falling off from the steering groove (47);

adaptation wheel (6) axial one side is provided with adjusts post (61), adjusts post (61) and inserts the radial position of installing at spacing rolling wheel (5), and a plurality of adaptation wheels (6) are annular array and linear permutation respectively and set up in the radial and axial of spacing rolling wheel (5), and a plurality of adaptation wheels (6) are equal clearance setting.

2. Numerically controlled machine turret according to claim 1, characterized in that there is only one servomotor (1) controlling the main shaft (3) and the secondary shaft.

3. The numerically controlled machine tool turret according to claim 2, characterized in that an auxiliary shaft clutch is provided on the auxiliary shaft, the structure of the auxiliary shaft clutch is the same as that of the main shaft clutch (31), a separator (23) is further mounted on the auxiliary shaft clutch, and the separator (23) is used for separating the rotating auxiliary shaft from the clamp (2).

4. The numerical control machine tool rotary table according to claim 3, characterized in that the steering gears (4) are of a combined structure, the two steering gears (4) are connected through an adjusting shaft (41), both ends of the adjusting shaft (41) are of a threaded structure, the adjusting shaft (41) shortens the distance between the two steering gears (4) through the action of threads, and the adjusting shaft (41) is connected with the shell through a hook inside the shell.

5. The numerical control machine tool turret according to claim 4, wherein the limiting rolling wheel (5) is provided with a plurality of roller grooves (56) for mounting the adaptive wheel (6) in the radial direction, the roller grooves (56) are inserted and mounted with adjusting columns (61), and the adjusting columns (61) and the roller grooves (56) are provided with elastic rubber (55) for supporting and restoring.

6. The numerical control machine tool turntable according to claim 5, wherein the elastic rubber (55) is of a honeycomb structure and forms a support, the adaptive wheel (6) is mounted at the top end of the adjusting column (61) through a rotating shaft, a limiting ring (63) for preventing the adaptive wheel (6) from being blocked is arranged on the adjusting column (61), a gap is reserved between the limiting ring (63) and the adaptive wheel (6), a first column limiting block (611) is arranged at the tail end of the adjusting column (61), and the first column limiting block (611) is matched with a second column limiting block (612) arranged on the roller groove (56) for limiting.

7. The numerical control machine tool turret according to claim 6, characterized in that a central hole (54) is provided in the middle of the limit rolling wheel (5), and the central hole (54) is used for inserting and installing the limit rolling wheel (5) on the roller bracket (51).