CN215748573U

CN215748573U - High-precision composite rotary table mechanism

Info

Publication number: CN215748573U
Application number: CN202122360492.3U
Authority: CN
Inventors: 吕曙光; 刘斌; 邹飞; 孙建军
Original assignee: Hebei Master Metal Machinery Manufacturing Co ltd
Current assignee: Hebei Master Metal Machinery Manufacturing Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-02-08
Anticipated expiration: 2031-09-28

Abstract

The application provides a high-precision composite turntable mechanism, which comprises a base body, wherein the top of the base body is provided with a mounting part; the rotary body is arranged on the base body, and the top surface of the rotary body is provided with a plurality of stations; each station is provided with a workpiece clamping mechanism; each workpiece clamping mechanism is provided with a driven straight gear; the rotating shaft penetrates through the center of the base body and is fixed at the center of the bottom surface of the rotating body; the clamping driving mechanism is arranged on the bottom surface of the mounting part of each station and comprises a driving straight gear; the adjusting assembly is used for keeping the driving straight gear meshed with the driven straight gear corresponding to each station; the rotary driving mechanism is used for driving the rotary shaft to lift and driving the rotary shaft to rotate so as to adjust the processing station; the supporting block is arranged on the bottom surface of the rotary body and corresponds to each station; each support block has a bottom surface with a different height; and the station detection assembly is arranged on the base body and corresponds to each supporting block, and the bottom surface height of each supporting block is detected so as to determine the corresponding processing station.

Description

High-precision composite rotary table mechanism

Technical Field

The application relates to the technical field of grinding machine processing, in particular to a high-precision composite rotary table mechanism.

Background

Because the multistation of multistation rotary machine tool, efficient advantage, by the wide application in many processing fields, the multistation lathe includes the revolving platform, and use the revolving platform as the center, the multistation machining subassembly of circumference distribution, the revolving platform is as the core spare part of multistation lathe, play very important effect, the revolving platform is including the base body that is fixed in the board, and install the also rotatable gyration body of liftable on the base body, be equipped with a plurality of processing stations on the gyration body, the work piece fixture of the total centre gripping work piece of dark commentaries on classics on each station, go up and down and rotatory graduation location that can realize work piece fixture through the gyration body.

After the workpiece clamping mechanism obtains the workpiece to be machined from the feeding position, the workpiece to be machined can be sequentially formed after machining of each machining assembly through indexing rotation of the rotary table, if power failure occurs in the process, the position of the current workpiece to be machined cannot be identified, and after equipment is very easy to restart, the workpiece to be machined is subjected to secondary machining or machining missing on the same machining station, so that the workpiece to be machined is directly damaged.

Work piece fixture connects driven gear, it is rotatory with the driving gear meshing that this internal setting of base, the gyration body is through rotatory switching station, so a driving gear need with a plurality of driven gear meshing, every driven gear's machining precision need keep highly uniform just can with same driving gear meshing, if the precision has the error, when two gear engagement, driven gear can give a reaction force of driving gear, make the driving gear skew, lead to the unable perfect meshing of driving gear and next driven gear or have the risk that breaks away from with driven gear.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, the present application is directed to a high-precision compound turntable mechanism, comprising:

the top of the base body is provided with an installation part;

the rotary body is arranged on the base body; the top surface of the rotary body is provided with a plurality of stations; each station is correspondingly provided with a workpiece clamping mechanism for clamping a workpiece; each workpiece clamping mechanism is provided with a driven straight gear for receiving rotary driving force;

the rotating shaft penetrates through the center of the base body and is fixed at the center of the bottom surface of the rotating body;

the clamping driving mechanism is arranged on the bottom surface of the mounting part corresponding to each station and comprises a driving straight gear;

the adjusting assembly is used for finely adjusting the position of the clamping driving mechanism so that the driving spur gear and the driven spur gear corresponding to each station keep meshed consistency;

the rotary driving mechanism is arranged in the base body and used for driving the rotary shaft to lift so as to drive the rotary body to lift and driving the rotary shaft to drive the lifted rotary body to rotate so as to adjust the processing station;

the supporting block is arranged on the bottom surface of the rotary body and corresponds to each station; each support block has a bottom surface with a different height;

and the station detection assembly is arranged on the base body and corresponds to each supporting block, and the bottom surface height of each supporting block is detected so as to determine the corresponding processing station.

According to the technical scheme provided by the embodiment of the application, the adjusting component comprises:

the transition plate is arranged on the bottom surface of the mounting part; the bottom surface of the transition plate is fixedly provided with the rotary driving mechanism, and the rotary driving mechanism is provided with a through hole along a first direction and used for extending the driving straight gear; the first direction is parallel to the axial direction of the driving spur gear;

at least 2 first through holes are formed in the transition plate around the through holes; the first through hole penetrates along the first direction; a first mounting member passes through the first through hole to mount the transition plate on the mounting portion; a fine adjustment gap is formed between the first mounting piece and the side wall of the first through hole;

the transition plate is also provided with a second mounting hole which is communicated along the first direction; the rotating shaft penetrates through the second mounting hole to be connected with the mounting part; the axes of the driving spur gear and the driven spur gear form a first plane, and the axis of the rotating shaft is not on the first plane;

the side jacking mechanism is used for applying fine adjustment force to the transition plate so that the transition plate rotates around the rotating shaft; the fine tuning force causes the driving spur gear to approach the driven spur gear.

According to the technical scheme provided by the embodiment of the application, the transition plate is further provided with a third mounting hole which is communicated along the first direction, and a third mounting piece penetrates through the third mounting hole and is connected with the mounting part.

According to the technical scheme provided by the embodiment of the application, the side top mechanism comprises a fine adjustment nut fixed on the mounting part and a fine adjustment screw rod in threaded connection with the fine adjustment nut; one end of the fine adjustment screw rod is tightly attached to the transition plate.

According to the technical scheme that this application embodiment provided, station detection subassembly includes:

a cylinder fixed in the base body;

the signal rod is connected to the end part of the piston of the cylinder, and the end part of the signal rod is used for being abutted against the bottom surface of the supporting block; detection points are arranged at the set heights of all the signal rods;

and the position sensor is arranged on one side of the signal rod and used for detecting the height of the detection point.

According to the technical scheme provided by the embodiment of the application, the detection point is formed by a magnetic block arranged on the signal rod, and the position sensor comprises a group of magnetic switches arranged along the length direction of the signal rod.

According to the technical scheme provided by the embodiment of the application, a groove is formed in the position, opposite to the workpiece detection assembly, of the bottom of the rotary body, and the supporting block is fixed in the groove.

According to the technical scheme provided by the embodiment of the application, the base is internally provided with an annular mounting block, and the signal connecting rod penetrates through the mounting block and is tightly attached to the inner wall of the mounting block.

In summary, the application provides a high-precision composite turntable mechanism, which comprises a base body and a rotary body arranged on the base body in a lifting and rotating manner, wherein a plurality of stations are arranged on the rotary body, the rotary body adjusts processing stations through rotation, each processing station is provided with a workpiece clamping mechanism for clamping a workpiece, and the workpiece clamping mechanism is connected with a driven straight gear; the top of the base body is provided with an installation part, the bottom surface of the installation part is provided with a driving straight gear, and the position of the driving straight gear can be finely adjusted through an adjusting component, so that the driving straight gear and the driven straight gear are kept meshed. The risk that the driving straight gear and the driven straight gear cannot be perfectly meshed or even separated due to machining precision errors is avoided, and the machining precision and the stability of machine tool operation are improved.

In addition, a rotating shaft penetrating through the center of the base body is fixed at the bottom of the rotating body, a driving device for driving the rotating shaft to lift and rotate is arranged in the base body, supporting blocks with bottom surfaces of different heights are arranged at each station of the bottom surface of the rotating body, and station detection assemblies are arranged in the base body and correspond to the supporting blocks. During working, workpieces to be machined at each station of the rotary body correspond to supporting blocks with bottom surfaces with different heights, the bottom surface height of each supporting block is detected through the station detection assembly, and the machining station corresponding to each workpiece is determined. Even if the machine tool is restarted after power failure, the data of the machining station of each workpiece submitted by the station detection assembly is stored in the machine tool control system, so that the condition that the machined workpiece is machined for multiple times or is not machined is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a high-precision composite turntable mechanism provided in an embodiment of the present application;

fig. 2 is a schematic bottom view of a high-precision composite turntable mechanism according to an embodiment of the present disclosure;

FIG. 3 is a partial enlarged view of B in FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 1;

fig. 5 is a schematic structural diagram of the workpiece clamping mechanism provided in this embodiment.

The text labels in the figures are represented as:

1. a base body; 11. an installation part; 2. a rotating body; 3. a workpiece clamping mechanism; 31. a driven spur gear; 41. a driving spur gear; 42. a gear driving component 5 and a rotating shaft; 61. a support block; 7. a station detection assembly; 71. a cylinder; 72. a signal lever; 73. a position sensor; 74. an air inlet; 75. an exhaust hole; 8. a transition plate; 81. a first through hole; 82. a third mounting hole; 83. a second mounting hole; 9. a side jacking mechanism; 91. fine adjustment of the nut; 92. fine adjustment of the screw rod; 93. a holding part.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

As mentioned in the background art, the present application provides a high-precision composite turntable mechanism, as shown in fig. 1 and 2, for solving the problems in the prior art, including:

the top of the base body 1 is provided with a mounting part 11; wherein, 1 bottom surface of base body is fixed in the board, and inside is equipped with installation space, and the top is equipped with the opening, preferably, installation department 11 is the annular mounting panel, the annular mounting panel covers the opening, with 1 coaxial arrangement of base body, and its external diameter is greater than the opening, the annular mounting panel is in the outer part of base body 1 corresponds every station and is equipped with the second through-hole.

The rotary body 2 is arranged on the base body 1; the top surface of the rotary body 2 is provided with a plurality of stations; each station is correspondingly provided with a workpiece clamping mechanism 3 for clamping workpieces; each of the work gripping mechanisms 3 is provided with a driven spur gear 31 for receiving a rotational driving force; and third through holes are formed in the positions, corresponding to the stations, of the rotary body 2, the axes of the third through holes are parallel to the axes of the second through holes, and the two through holes are eccentrically arranged.

Wherein, work piece fixture 3's structure is as shown in fig. 5, including the centre gripping subassembly of centre gripping work piece, with centre gripping subassembly coaxial arrangement's pivot 32 the outer turbine 34 of establishing through the bearing housing of pivot 32 and with turbine 34 complex worm 33, worm 33 is close to a pot head of gyration body 2 is equipped with driven spur gear 31, worm 33 passes the third through-hole with the driven spur gear 31 of gyration body 2 below is connected, driven spur gear 31 cover is located worm 33 tip, driven spur gear 31 receives the gyration drive power after, drives worm 33 rotates for rather than the complex turbine 34 rotates, and then drives pivot and centre gripping subassembly and rotate.

The rotating shaft 5 penetrates through the center of the base body 1 and is fixed at the center of the bottom surface of the rotating body 2; alternatively, the rotation shaft 5 is connected to the rotation body 2 by a bolt, so that the rotation body 2 is moved when the rotation shaft 5 is lifted or rotated, and preferably, the rotation shaft 5 is a hollow cylinder, so that a driving load can be reduced and operation efficiency can be improved.

The clamping driving mechanism is arranged on the bottom surface of the mounting part 11 corresponding to each station and comprises a driving straight gear 41; the driving straight gear 41 is connected with and drives a gear driving component 42 for rotating through a bearing, the gear driving component 42 is coaxially connected with the driving straight gear 41, the axial direction of the gear driving component is parallel to the axial direction of the rotating shaft 5, and the bearing penetrates through the second through hole and is coaxially connected with the driving straight gear 41 above the second through hole.

An adjusting assembly, configured to finely adjust a position of the clamping driving mechanism, so that the driving spur gear 41 and the driven spur gears 31 corresponding to each station are kept in meshing consistency, and the rotary body 2 switches stations by rotation, so that one driving spur gear 41 needs to be meshed with a plurality of driven spur gears 31, and the machining precision of each driven spur gear 31 needs to be kept in height consistency to be meshed with the same driving spur gear 41, and if there is an error in precision, when two gears are meshed, the driven spur gear 31 may provide a reaction force to the driving spur gear 41, so that the driving spur gear 41 is offset, and thus the driving spur gear 41 cannot be perfectly meshed with the next driven spur gear 31 or is in risk of being disengaged from the driven spur gear 31. In addition, even if the machining precision of the driven spur gear 31 meets the requirement, the driving spur gear 41 and the driven spur gear 31 are meshed and rotated for a long time, and the meshing is inconsistent due to abrasion, so that the position of the driving spur gear 41 can be adjusted through the adjusting assembly, so that the driving spur gear 41 and the driven spur gear 31 are always meshed, the machining precision and the stability of machine tool operation are improved, the risk that the driving spur gear and the driven spur gear cannot be perfectly meshed or even separated due to machining precision errors is avoided, and the machining precision and the stability of machine tool operation are improved.

The rotary driving mechanism is arranged in the base body 1 and used for driving the rotary shaft 5 to lift so as to drive the rotary body 2 to lift and driving the rotary shaft 5 to drive the lifted rotary body 2 to rotate so as to adjust a processing station; the rotary driving mechanism comprises a lifting driving mechanism for driving the rotary shaft 5 to lift and a rotary driving mechanism for driving the rotary shaft 5 to rotate, the lifting driving mechanism comprises a piston which is sleeved outside the rotary shaft 5 and is connected with the rotary shaft 5 in a bearing mode, and the piston is driven to drive the rotary shaft 5 to lift in a hydraulic driving mode; the rotary driving mechanism comprises a driven gear and a driving gear, wherein the driven gear is sleeved on the end portion of the rotary shaft 5, the driven gear is meshed with the driving gear, the driving gear is also a straight gear, the driving gear is connected with a rotary driving assembly through a bearing, preferably, the rotary driving assembly selects a servo motor with high precision, the output end of the rotary driving assembly is fixed on the bottom surface of the base body 1, a machine table at the bottom of the base body 1 is provided with a groove for placing the rotary driving assembly, and the axis of the rotary driving assembly is parallel to the axis of the rotary shaft 5.

Work as lift actuating mechanism passes through the piston drives revolving axle 5 with when gyration body 2 rose, driven gear with the driving gear breaks away from, just driven spur gear 31 with initiative spur gear 41 also breaks away from, works as gyration body 2 rises after targetting in place, the drive of gyration drive subassembly the driving gear drives driven gear rotates, driven gear drives revolving axle 5 with gyration body 2 rotates and has realized the station adjustment, and the back of targetting in place, lift actuating mechanism drives revolving axle 5 with gyration body 2 descends, descends and targetting in place the back, initiative spur gear 41 drives driven spur gear 31 rotates, driven spur gear 31 drives centre gripping subassembly and work piece rotate, have realized the processing of work piece.

The supporting block 61 is arranged on the bottom surface of the rotary body 2 and corresponds to each station; each of the supporting blocks 61 has a bottom surface of a different height; and the station detection assembly 7 is arranged in the base body 1, corresponds to each supporting block 61, and is used for detecting the bottom height of each supporting block 61 so as to determine a corresponding processing station. The supporting blocks 61 rotate and lift along with the rotary body 2, when the rotary body 2 works, workpieces to be machined at each station of the rotary body 2 correspond to the supporting blocks 61 with bottom surfaces with different heights, the bottom surface height of the supporting blocks 61 is detected through the station detection assembly 7, and the machining station corresponding to each workpiece is determined. Even if the machine tool is restarted after power failure, the data of the machining station of each workpiece submitted by the station detection assembly 7 has been stored in the machine tool control system, so that the condition that the machined workpiece is machined for multiple times or is not machined is avoided.

Further, as shown in fig. 3, the adjusting assembly includes: a transition plate 8 disposed on a bottom surface of the mounting portion 11; the bottom surface of the transition plate 8 is fixed with the rotary driving mechanism, and a through hole is formed in the first direction of the rotary driving mechanism and used for extending the driving straight gear 41; the first direction is parallel to the axial direction of the spur gear 41; the through-hole with the second through-hole of installation department 11 leads to coaxially, initiative spur gear 41 with bearing between the gear drive subassembly 42 passes the through-hole with behind the second through-hole with the top initiative spur gear 41 is connected. The gear drive assembly 42 is preferably a high precision servo motor, the output of which can be bolted to the bottom surface of the transition plate 8.

At least 2 first through holes 81 are formed on the transition plate 8 around the through holes; the first through hole 81 penetrates in the first direction; a first mounting member mounts the transition plate 8 to the mounting portion 11 through the first through hole 81; a fine adjustment gap is formed between the first mounting piece and the side wall of the first through hole 81; preferably, the transition plate 8 is a rectangular parallelepiped, the first through holes are used for fixing the transition plate 8 and the mounting portion 11, optionally, the number of the first through holes 81 is 2, and 2 of the first through holes 81 are arranged in a diagonal manner; optionally, the number of the first through holes 81 is 4, and the first through holes are distributed at four corners of the rectangular parallelepiped; first installed part is the subassembly that can become flexible, preferably, the subassembly that can become flexible is the screw, be equipped with the screw that matches rather than on the installation department 11, first installed part can pass first through-hole 81 will cross cab apron 5 with installation department 11 threaded connection, when not hard up when the screw is not extracted out the screw, because there is the fine setting clearance between first through-hole 81 and the screw, then cross cab apron 8 and can move in the within range in clearance.

The transition plate 8 is further provided with a second mounting hole 83 which penetrates along the first direction; the rotating shaft passes through the second mounting hole 83 to be connected with the mounting part 11; the axes of the driving spur gear 41 and the driven spur gear 31 form a first plane, and the axis of the rotating shaft is not on the first plane; the side jacking mechanism 9 is used for applying fine adjustment force to the transition plate 8 so as to enable the transition plate 8 to rotate around the rotating shaft; the trimming force causes the driving spur gear 41 to approach the driven spur gear 31. In this embodiment, as shown in fig. 1, when the driven spur gear 31 is in the counterclockwise direction of the driving spur gear 41, if the processing accuracy of the driven spur gear 41 has an error, when the driven spur gear 31 and the driving spur gear 41 are engaged and rotated, the driven spur gear 31 always provides a clockwise reaction force to the driving spur gear 41, and the driving spur gear 41 is deviated in a direction away from the driven spur gear 31 under a long-term action, so that a force for approaching the driven spur gear 31 needs to be applied to the driving spur gear 41, preferably, the second mounting hole 83 is disposed at an inner corner on the clockwise side of the gear driving assembly 42, the side-jacking mechanism 9 is mounted on the mounting portion 11 and disposed at a same side with the second mounting hole 83 and a corner on the transition plate 8, so that a counterclockwise force is applied to the side-jacking mechanism 9, and is arranged at the included angle of the transition plate 8, so that the adjustment is more labor-saving.

Wherein the axes of the driving spur gear 41 and the driven spur gear 31 form a first plane, and the axis of the rotating shaft is not on the first plane; if the axis of the rotating shaft is on the first plane, that is, the reflection point of the axis of the rotating shaft on the first plane is on the extension line of the connecting line of the axes of the driven spur gear 31 and the driving spur gear 41, in this case, the distance between the driving spur gear 41 and the driven spur gear 31 is the closest, and if the driving spur gear 41 is rotated with the rotating shaft as the center of the circle, only the driving spur gear 41 is rotated in the direction away from the driven spur gear 31, so the axis of the rotating shaft is not on the first plane.

Further, as shown in fig. 3, a third mounting hole 82 penetrating in the first direction is further formed in the transition plate 8, and a third mounting piece is connected to the mounting portion 11 through the third mounting hole 82. Preferably, the third installation part is a pin shaft, and in a normal state, the machining precision of the driven straight gear 31 can meet requirements, the adjustment assembly does not need to rotate, so that the third installation part can be used for fixing the transition plate 8 and the installation part 11, the connection stability of the transition plate 8 and the installation part 11 is improved, the running stability of the machine tool is improved, when the position of the transition plate 8 needs to be adjusted through the adjustment assembly, the pin shaft is pulled out, the first installation part is loosened, an acting force is applied through the side jacking mechanism 9, the transition plate 8 can rotate by taking the rotating shaft as a circle center, after the position is adjusted, the pin shaft does not need to be inserted back, the transition plate 8 is jacked through the side jacking mechanism 9, the first installation part is fastened, and the machine tool can normally work.

Further, as shown in fig. 3, the side top mechanism 9 includes a fine adjustment nut 91 fixed on the mounting portion 11 and a fine adjustment screw 92 in threaded connection with the fine adjustment nut 91; one end of the fine adjustment screw 92 is tightly attached to the transition plate 8. Preferably, the fine adjustment nut 91 is a rectangular block having a threaded through hole at the center, the fine adjustment nut 91 is fixed to the bottom surface of the mounting portion 11 by a bolt, the axial direction of the threaded through hole cannot be parallel to the edge of the transition plate 8, so that the fine adjustment screw 92 passing through the threaded through hole can be ensured to be contacted with the transition plate 8, by rotating the fine adjustment screw 92, the transition plate 8 can be slightly rotated in a rotatable state, as shown in fig. 2, since the driven spur gear 31 gives a clockwise reaction force to the driving spur gear 41, the side-up mechanism 9 is provided on the clockwise side of the transition plate 8, and by rotating the fine adjustment screw 92, a counterclockwise acting force is applied to the transition plate 8, so that the transition plate 8 drives the gear driving assembly 42 and the driving spur gear 41 to slightly move in the counterclockwise direction. The fine adjustment screw 92 and the fine adjustment nut 91 are simple in structure and convenient to operate, and the working efficiency of the machine tool is improved.

Preferably, as shown in fig. 3, the end of the fine adjustment screw 92 opposite to the transition plate 8 is provided with a clamping portion 93, and the clamping portion 93 is used for installing a tool for rotating the fine adjustment screw 92. Because it installs on the cab apron 8 gear drive assembly 42, gear drive assembly 42 bearing connection has initiative straight-tooth gear 41, weight is great, so acts on it makes its pivoted effort great to cross cab apron 8, adjusts with the help of the instrument fine setting screw 92 labour saving and time saving more, optionally, the instrument is the spanner fine setting screw 92 is kept away from the one end of crossing cab apron 8 is equipped with clamping part 93 is used for the installation the spanner, clamping part 93 is hexagonal prism column shape, has six clamping faces, can with the contact is hugged closely to the spanner for the operation is convenient fast laborsaving more.

Example 2

On the basis of embodiment 1, as shown in fig. 4, the station detection assembly 7 includes: a cylinder 71 fixed in the base body 1; a signal rod 72 connected to an end of the piston of the cylinder 71, wherein an end of the signal rod 72 is adapted to abut against a bottom surface of the supporting block 61; detection points are arranged at the set height positions of all the signal rods 72; and a position sensor 73 provided at one side of the signal lever 72 for detecting the height of the detection point. The top of the cylinder 71 is provided with an air inlet 74 and an air outlet 75, the cylinder 71 supplies air at the air inlet 74 all the time, preferably, the air supply pressure can be adjusted by a pressure reducing valve, so that in the process of lifting the rotary body 2, the piston rod of the cylinder 71 is always in a state of propping against the signal rod 72, when the rotary body 2 is lifted, the signal rod 72 props against the supporting block 61 arranged at the bottom surface of the rotary body 2 to be lifted synchronously, and when the rotary body 2 is lowered, the piston rod moves downwards along with the pressure, and the air in the cylinder 71 is discharged from the air outlet 75. When the rotating body 2 rotates from one station to another station, the signal rod 72 is in a suspended state near the rotating body 2 and does not contact with the supporting block 61, so that the signal rod 72 is prevented from being damaged.

Preferably, a signal rod 72 is arranged between the supporting block 61 and the cylinder 71, when the piston rod directly abuts against the supporting block 61, if the piston rod is damaged, the cylinder 71 needs to be removed to complete replacement, or the whole cylinder 71 needs to be replaced, so that the cost is high, time and labor are wasted, the signal rod 72 is arranged in front of the supporting block 61 and the piston rod, the piston rod is in indirect contact with the supporting block 61, and even if the signal rod 72 is damaged, only the signal rod 72 needs to be replaced, so that the cost is saved, and the maintenance time is shortened.

Preferably, the position sensor 73 is installed on one side of the piston rod of the air cylinder, a detection point is arranged on the piston rod, and the position of the detection point on the piston rod is detected to identify which machining workpiece is at the current station, so that the station is positioned.

Further, the detection point is formed by a magnetic block disposed on the piston rod, and the position sensor 73 includes a set of magnetic switches arranged along the length direction of the piston rod. The position sensor 73 of the embodiment can detect a plurality of positions, when the rotary body 2 is lifted, the piston rod is lifted, the magnetic block of the detection point on the piston rod is lifted, the position sensor 73 comprises a plurality of magnetic switches arranged along the length direction of the piston rod, when the magnetic block of the piston rod is in the detection range of one of the magnetic switches, the magnetic switch is activated to obtain the descending height of the piston rod, and the corresponding supporting block 61 is obtained through the descending height, so that which processing workpiece is at the station is obtained.

Further, as shown in fig. 1, a groove is formed at the bottom of the rotating body 2 opposite to the workpiece detection assembly, and the supporting block 61 is fixed in the groove. Preferably, the supporting block 61 is a cylinder, the supporting block 61 can be vertically fixed at the bottom of the rotating body 2 through a bolt, but there is a case that the supporting block 61 is deviated, so a groove is formed on the rotating body 2, the supporting block 61 is fixed in the groove, the deviation of the supporting block 61 is prevented, it is ensured that the axis of the supporting block 61 is always consistent with the axis of the signal connecting rod 72, and in order to increase the contact area between the supporting block 61 and the signal connecting rod 72, the outer diameter of the portion of the supporting block 61 outside the groove is larger, so that the supporting block 61 is a convex block, the contact area is increased, and the stability of the system is improved.

Further, as shown in fig. 4, an annular mounting block is arranged in the base body 1, and the signal connecting rod 72 passes through the mounting block and clings to the inner wall of the mounting block. Preferably, the base body 1 is a hollow cylinder, an installation space is arranged inside the base body 1, the installation block can be connected with the inside of the base body 1 through a bolt, and can also be integrally formed with the base body 1, because the distance between the cylinder 71 and the supporting block 61 is relatively long, and the signal connecting rod 72 is easy to deviate, so that the displacement of the piston rod in the cylinder 71 can deviate, and even the signal connecting rod 72 contacts other components to damage equipment, the installation block is arranged on the outer ring of the signal connecting rod 72, the outer wall of the signal connecting rod 72 is tightly attached to the inner wall of the installation block, the signal connecting rod 72 is limited from deviating in the radial direction, so that the axis of the signal connecting rod 72 is always consistent with the axis of the piston rod, and the accuracy of the position detected by the position sensor 73 is ensured, the stability of the machine tool is also improved.

The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are no specific structures which are objectively limitless due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the technical features mentioned above can be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention in other instances, which may or may not be practiced, are intended to be within the scope of the present application.

Claims

1. A high-precision composite turntable mechanism is characterized by comprising:

the top of the base body (1) is provided with a mounting part (11);

the rotary body (2) is arranged on the base body (1); the top surface of the rotary body (2) is provided with a plurality of stations; each station is correspondingly provided with a workpiece clamping mechanism (3) for clamping a workpiece; each workpiece clamping mechanism (3) is provided with a driven spur gear (31) for receiving rotary driving force;

the rotating shaft (5) penetrates through the center of the base body (1) and is fixed at the center of the bottom surface of the rotating body (2);

the clamping driving mechanism is arranged on the bottom surface of the mounting part (11) corresponding to each station and comprises a driving straight gear (41);

the adjusting assembly is used for finely adjusting the position of the clamping driving mechanism, so that the driving spur gear (41) and the driven spur gear (31) corresponding to each station keep meshed consistency;

the rotary driving mechanism is arranged in the base body (1) and used for driving the rotary shaft (5) to lift so as to drive the rotary body (2) to lift and driving the rotary shaft (5) to drive the lifted rotary body (2) to rotate so as to adjust a machining station;

the supporting block (61), the said supporting block (61) is set up in the said rotary body (2) bottom surface, correspond to each said station to set up; each of the supporting blocks (61) has a bottom surface of a different height;

and the station detection assembly (7) is arranged in the base body (1), corresponds to each supporting block (61), and is used for detecting the bottom height of each supporting block (61) so as to determine the corresponding processing station.

2. A high-precision compound turntable mechanism according to claim 1, characterized in that: the adjustment assembly includes:

a transition plate (8) disposed on a bottom surface of the mounting portion (11); the bottom surface of the transition plate (8) is fixedly provided with the rotary driving mechanism, and a through hole is formed in the first direction and used for extending the driving straight gear (41); the first direction is parallel to the axial direction of the driving spur gear (41);

at least 2 first through holes (81) are formed in the transition plate (8) around the through holes; the first through hole (81) penetrates in the first direction; a first mounting member mounting the transition plate (8) to the mounting portion (11) through the first through hole (81); a fine adjustment gap is formed between the first mounting piece and the side wall of the first through hole (81);

the transition plate (8) is also provided with a second mounting hole (83) which penetrates along the first direction; the rotating shaft penetrates through the second mounting hole (83) to be connected with the mounting part (11); the axes of the driving spur gear (41) and the driven spur gear (31) form a first plane, and the axis of the rotating shaft is not on the first plane;

a side jacking mechanism (9) for applying a fine adjustment force to the transition plate (8) to enable the transition plate (8) to rotate around the rotating shaft; the fine adjustment force causes the driving spur gear (41) to approach the driven spur gear (31).

3. A high-precision compound turntable mechanism according to claim 2, characterized in that: and a third mounting hole (82) which is communicated along the first direction is further formed in the transition plate (8), and a third mounting piece penetrates through the third mounting hole (82) to be connected with the mounting part (11).

4. A high-precision compound turntable mechanism according to claim 3, characterized in that: the side top mechanism (9) comprises a fine adjustment nut (91) fixed on the mounting part (11) and a fine adjustment screw rod (92) in threaded connection with the fine adjustment nut (91); one end of the fine adjustment screw rod (92) is tightly attached to the transition plate (8).

5. A high-precision compound turntable mechanism according to claim 1, characterized in that: the station detection assembly (7) comprises:

a cylinder (71) fixed in the base body (1); a detection point is arranged at the set height of the piston rod of the air cylinder;

the signal rod (72) is connected to the end part of the piston of the cylinder (71), and the end part of the signal rod (72) is used for being abutted against the bottom surface of the supporting block (61);

and the position sensor (73) is arranged on one side of the piston rod of the air cylinder and used for detecting the height of the detection point.

6. The high-precision compound turntable mechanism according to claim 5, characterized in that: the detection point is formed by a magnetic block arranged on the piston rod, and the position sensor (73) comprises a group of magnetic switches arranged along the length direction of the piston rod.

7. A high-precision compound turntable mechanism according to claim 1, characterized in that: the bottom of the rotary body (2) is provided with a groove relative to the workpiece detection assembly, and the supporting block (61) is fixed in the groove.

8. The high-precision compound turntable mechanism according to claim 5, characterized in that: an annular mounting block is arranged in the base body (1), and the signal rod (72) penetrates through the mounting block and is tightly attached to the inner wall of the mounting block.