CN212762168U - Embedded direct-drive rotary worktable supported by plane bearing - Google Patents

Abstract

The utility model discloses a rotary worktable is directly driven to mosaic of plane bearing support, including basic workstation, basic workstation's top is provided with rotary worktable through plane bearing, basic workstation center department has rotary worktable base through bolt fixed mounting, relates to digit control machine tool technical field. This rotary worktable is directly driven to mosaic of plane bearing support, through set up a rotatable rotary worktable on basic workstation, rotary worktable and basic workstation coplane, rotary worktable can process small-size work piece, adjust the rotary worktable last T-slot to unanimous with basic workstation T-slot direction, can carry out large-scale work piece and process, realize the mode of two kinds of workstation work on a lathe promptly, improved the commonality and the flexibility of lathe.

Description

Embedded direct-drive rotary worktable supported by plane bearing

Technical Field

The utility model relates to a digit control machine tool technical field specifically is a rotary worktable is directly driven to inserted of plane bearing supporting.

Background

The rotary worktable is a commonly used functional part on a numerical control machine tool, the shape of the rotary worktable is generally circular or square, the area of the worktable is small, and large-sized long-strip-shaped workpieces cannot be processed, and the independent rotary worktable can only be supported on a turntable base with a small bearing area due to the small size, so the bearing weight of the rotary worktable is small.

On a gantry milling machine, a rectangular workbench is used, so that a large workpiece can be machined and the weight of the large workpiece can be borne, but multi-elevation machining cannot be realized in one-time clamping, multi-elevation machining can be completed only by clamping and aligning for many times, and the production efficiency is low.

The angle measuring elements used by the direct-drive rotary worktable are mostly integral angle encoders sold in the market, and the price is high, so that the application of the direct-drive rotary worktable is restricted.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a rotary worktable is directly driven to mosaic of plane bearing supporting has solved current rotary worktable and has used the problem that the limitation is big.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an embedded direct-drive rotary table supported by a planar bearing comprises a basic table, wherein the top of the basic table is provided with a rotary table through a planar needle bearing, the center of the basic table is fixedly provided with a rotary table base through a bolt, a rotary driving assembly is fixedly arranged in the rotary table base and comprises a motor cover, a torque motor stator, a torque motor rotor, a motor mandrel, an angle encoder, a clamping mechanism, a ball bearing, a roller bearing and a connecting disc, the rotary table, the connecting disc, the motor mandrel and the torque motor rotor are fixedly connected and supported on the rotary table base through the roller bearing, and the rotary table base is fixedly connected with the torque motor stator, the motor cover and the ball bearing and is fixed on the basic table; the torque motor rotor is supported between the roller bearing and the ball bearing, and T-shaped grooves are formed in the tops of the basic workbench and the rotary workbench.

The angle encoder comprises an encoding supporting disk and a circular grating, the encoding supporting disk is fixed on the motor cover, and the circular grating is fixedly arranged on the motor mandrel through a large spacer bush, a screw and a locking nut.

Furthermore, a reading head is fixedly mounted on the coding support disc.

Furthermore, a signal processing circuit board is fixedly mounted on the coding support disk through a small spacer bush, a locking nut and a screw.

The open design of the angle encoder is convenient for processing and assembling.

Further, clamping mechanism includes the hydro-cylinder, the inside of hydro-cylinder is provided with the piston, the top fixedly connected with piston rod of piston, the top of hydro-cylinder and the fixed surface who is located the piston rod install the cone, the cone is established on the surface of piston rod through the centre bore cover.

Further, the upside cover that the surface of piston rod just is located the cone is equipped with and presss from both sides tight piece, the surface of piston rod just is located the upside cover that presss from both sides tight piece is equipped with the compact heap, the surface of piston rod just is located the upside threaded connection of compact heap has stop nut, the surface of piston rod just is located the inside cover of cone and is equipped with the spring, the bottom fixed mounting of hydro-cylinder has the hydro-cylinder lid, the venthole has been seted up on the hydro-cylinder lid.

Further, the both sides of T-shaped inslot wall all are provided with spacing subassembly, the both sides of T-shaped inslot portion all have the stopper through spacing subassembly joint.

Furthermore, the limiting assembly comprises an installation block, a placing groove is formed in one side of the top of the installation block, a groove is formed in one side of the inner wall of the placing groove, a driving block is arranged between the two sides of the inner wall of the groove, a fixture block is fixedly connected to the top of the driving block, and the bottom of the driving block is fixedly connected with the bottom of the inner wall of the groove through an elastic piece.

Further, one side of recess internal surface has the rectangle chamber through the spout intercommunication, the inside in rectangle chamber is provided with promotes the piece, the top fixedly connected with catch bar that promotes the piece, the top of catch bar runs through the installation piece and extends to the outside of installation piece, the top fixedly connected with of catch bar presses the briquetting, the top fixedly connected with lantern ring of installation piece, one side fixedly connected with connecting rod that promotes the piece, the one end of connecting rod runs through the drive piece and extends to the inside of drive piece.

Further, the bottom fixedly connected with bar-shaped piece of stopper, the bar groove has been seted up to the bottom of T inslot wall.

Through setting up two stoppers at T inslot portion, form new T-slot between two stoppers and between the T-slot inner wall, can adjust the size in T-slot promptly through changing the stopper to can adapt to the bar work piece of equidimension not processing.

(III) advantageous effects

The utility model discloses following beneficial effect has:

this plain bearing supported's embedded directly drives swivel work head through set up a rotatable swivel work head on basic workstation, swivel work head and basic workstation coplane, swivel work head can process small-size work piece, adjusts the T-slot on the swivel work head to unanimous with basic workstation's T-slot direction, can carry out the processing of large-scale work piece, realizes the mode of two kinds of workstation work promptly on a lathe, has improved the commonality and the flexibility of lathe.

This rotary worktable is directly driven to mosaic of plane bearing support places on the plane bearing that is located basic workstation through rotary worktable's holding surface, rather than directly putting on the revolving stage base, increases the diameter size of holding surface, reduces rotary worktable's overhang length, has strengthened rotary worktable's bearing capacity greatly, can process heavier work piece, has increased rotary worktable during operation stability and precision.

This rotary worktable is directly driven to embedded of plane bearing support through setting up split type angle encoder, is convenient for make, and low price, greatly reduced direct-drive rotary worktable's manufacturing cost.

The embedded direct-drive rotary table supported by the plane bearing can reliably keep the rotary table at the angle after the angle is adjusted by arranging the clamping mechanism for the motor mandrel.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a side view of the utility model in its entirety;

fig. 3 is a top view of the whole of the present invention;

fig. 4 is a cross-sectional view of the whole of the present invention;

FIG. 5 is a schematic view of a portion of the structure of FIG. 4 according to the present invention;

fig. 6 is a cross-sectional view of the clamping mechanism of the present invention;

fig. 7 is a schematic structural view of the exterior of the clamping mechanism of the present invention;

fig. 8 is a cross-sectional view of the clamping mechanism of the present invention;

fig. 9 is a schematic structural diagram of a second embodiment of the present invention;

fig. 10 is a partial cross-sectional view of fig. 9 in accordance with the present invention;

FIG. 11 is an enlarged view of portion A of FIG. 10 according to the present invention;

in the figure, 1-basic workbench, 2-rotary workbench, 3-rotary workbench base, 4-rotary driving component, 41-motor cover, 42-torque motor stator, 43-torque motor rotor, 44-motor spindle, 45-angle encoder, 451-code supporting disk, 452-reading head, 453-circular grating, 454-signal processing circuit board, 455-large spacer, 456-locking nut, 457-small spacer, 458-screw, 46-clamping mechanism, 461-oil cylinder, 462-piston, 463-piston rod, 464-cone, 465-spring, 466-clamping block, 467-air outlet hole, 468-clamping block, 47-ball bearing, 48-roller bearing, 49-connecting disk, the device comprises a 5-plane needle bearing, a 6-T-shaped groove, a 7-placing groove, an 8-clamping groove, a 9-limiting block, a 10-strip-shaped groove, an 11-strip-shaped block, a 12-limiting assembly, a 121-mounting block, a 122-groove, a 123-elastic piece, a 124-driving block, a 125-rectangular cavity, a 126-pushing block, a 127-connecting rod, a 128-clamping block, a 129-lantern ring and a 120-pressing block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

First embodiment

Referring to fig. 1 to 8, an embodiment of the present invention provides a technical solution: the utility model provides a rotary table is directly driven to embedded of flat bearing support, includes basic workstation 1, the top of basic workstation 1 is provided with rotary table 2 through plane bearing 5, 1 center department of basic workstation has rotary table base 3 through bolt fixed mounting, the inside fixed mounting of rotary table base 3 has rotary drive subassembly 4, rotary drive subassembly 4 includes motor cover 41, torque motor stator 42, torque motor rotor 43, motor mandrel 44, angle encoder 45, clamping mechanism 46, ball bearing 47, roller bearing 48 and coupling disc 49, rotary table 2, coupling disc 49, motor mandrel 44, torque motor rotor 43 fixed connection, and pass through roller bearing 48 supports on rotary table base 3, rotary table base 3 with torque motor stator 42, motor cover 41, rotary table base 3, The ball bearing 47 is fixedly connected and fixed on the basic workbench 1; the torque motor rotor 43 is supported between a roller bearing 48 and a ball bearing 47, and T-shaped grooves 8 are formed in the tops of the base workbench 1 and the rotary workbench 2.

The table surface of basic workstation 1 and the table surface parallel and level of rotary table 2, basic workstation 1 be in the middle of the large-scale rectangle workstation offer with rotary table 2's looks adaptation cylindricality mounting groove, the quantity of T groove 6 is provided with a plurality ofly.

The angle encoder 45 comprises an encoding support plate 451 and a circular grating 453, the encoding support plate 451 is fixed on the motor cover 41, and the circular grating 453 is fixedly arranged on the motor mandrel 44 through a large spacer 455, a screw 458 and a locking nut 457.

The code support plate 451 is fixedly provided with a reading head 452.

The code support plate 451 is fixedly provided with a signal processing circuit board 454 through a small spacer 456, a locking nut 457 and a screw 458.

The signal processing circuit board 454, the numerical control system and the torque motor drive to perform the worktable indexing and control the indexing precision.

The clamping mechanism 46 includes an oil cylinder 461, a piston 462 is disposed inside the oil cylinder 461, a piston rod 463 is fixedly connected to the top of the piston 462, a cone 464 is fixedly mounted on the top of the oil cylinder 461 and located on the surface of the piston rod 463, and the cone 464 is sleeved on the surface of the piston rod 463 through a central hole.

The surface of the piston rod 463 and the upper side of the cone 464 are sleeved with a clamping block 466, the surface of the piston rod 463 and the upper side of the clamping block 466 are sleeved with a pressing block 468, the surface of the piston rod 463 and the upper side of the pressing block 468 are in threaded connection with a limit nut, the surface of the piston rod 463 and the inside of the cone 464 are sleeved with a spring 465, the bottom of the oil cylinder 461 is fixedly provided with an oil cylinder cover, and the oil cylinder cover is provided with an air outlet 467.

The inlet port has been seted up to one side of hydro-cylinder lid, and venthole 467 is located in the middle of the hydro-cylinder lid, and the hydro-cylinder lid is fixed through screw and hydro-cylinder.

The working principle is as follows: the workbench comprises a basic workbench 1 and a rotary workbench 2, when box bodies and small-size machine frame parts are machined, only the rotary workbench 2 is needed, and the rotary workbench 2 can rotate at any angle of the central line of the rotary workbench 2 through a rotary driving assembly 4, so that machining operation is convenient;

when a large-scale workpiece is machined, the direction of the T-shaped groove 6 on the rotary worktable 2 is adjusted to be consistent with that of the T-shaped groove on the basic worktable 1, the rotary worktable 2 and the basic worktable 1 are combined to form an integral large-scale worktable, the worktable can machine the two parts of different types, and the universality and the flexibility of the machine tool are improved;

by arranging the plane needle roller bearing 5, the weight of the workpiece on the rotary worktable is completely transmitted to the basic worktable 1 through the plane needle roller bearing 5, so that the bearing capacity of the rotary worktable of the machine tool is improved;

when indexing is needed, the circular grating 453 rotates along with the motor mandrel 44 through the large spacer 455 and the nut 20, the reading head 452 fixed on the coding support plate 451 reads the circular grating 453, and the signal processing circuit board 454 and the numerical control system and the torque motor drive which are fixed on the coding support plate 451 through the small spacer 456 and the screw 458 perform table indexing and control indexing precision, so that the rotary table 2 can be adjusted and rotated at a more accurate angle;

when the rotary table rotates, the air outlet holes 467 are filled with pressure oil to lift the piston 462, the pressure applied to the clamping block 466 is removed, under the action of the pushing force of the spring 465, the clamping block 466 is disengaged from the cone 464 and lifted, in the released state, a certain gap is left between the outer circle of the clamping block 466 and the matching hole of the motor spindle 44, the clamping block 466 is restored to the original state after the external force is cancelled, that is, the clearance between the clamp 466 and the matching hole of the motor spindle 44 is restored, after the rotary table is rotated and indexed, the oil inlet hole is filled with pressure oil, the piston 462 moves downwards and drives the nut, the pressing block 468 and the clamping block 466 to be pressed on the cone 464 together, the clamping block 466 is pressed under the action of axial pressure, the outer diameter of the rotary table is expanded and is clasped with the inner hole clamping surface of the motor mandrel 44, so that the rotary table is locked and limited, and the rotary table 2 is kept at the angle after the angle is adjusted.

Second embodiment

Referring to fig. 9, 10 and 11, a second embodiment of the present application provides another embedded direct-drive rotary table supported by a planar bearing based on the embedded direct-drive rotary table supported by a planar bearing provided in the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the difference that the plain bearing supported's embedded directly drives swivel work head that the second embodiment of this application provided lies in, plain bearing supported's embedded directly drives swivel work head, the both sides of 6 inner walls in T-slot all are provided with spacing subassembly 12, the inside both sides in T-slot 6 all have stopper 9 through spacing subassembly 12 joint.

A new T-shaped groove is formed between the two limiting blocks 9 and the inner wall of the T-shaped groove, and two limiting assemblies 12 are symmetrically arranged on two sides of each T-shaped groove.

The limiting assembly 12 comprises an installation block 121, a placement groove 7 is formed in one side of the top of the installation block 121, a groove 122 is formed in one side of the inner wall of the placement groove 7, a driving block 124 is arranged between two sides of the inner wall of the groove 122, a clamping block 128 is fixedly connected to the top of the driving block 124, and the bottom of the driving block 124 is fixedly connected with the bottom of the inner wall of the groove 122 through an elastic member 123.

One side of the clamping block 128 is set to be an arc-shaped surface, a corresponding placing groove is formed in the position of the installation block 121, corresponding to the basic working table, of the rotary working table, so that the whole table is provided with the placing groove, and the rotary working table and one side of the basic working table, which is provided with the placing groove, are sealed, and the other side of the rotary working table and one side of the basic working table, which are provided with.

One side of the inner surface of the groove 122 is communicated with a rectangular cavity 125 through a sliding groove, a pushing block 126 is arranged in the rectangular cavity 125, the top of the pushing block 126 is fixedly connected with a pushing rod, the top end of the pushing rod penetrates through the mounting block 121 and extends to the outside of the mounting block 121, the top of the pushing rod is fixedly connected with a pressing block, the top of the mounting block 121 is fixedly connected with a lantern ring 129, one side of the pushing block 126 is fixedly connected with a connecting rod 127, and one end of the connecting rod 127 penetrates through the driving block 124 and extends to the inside of the driving block 124.

The penetrating position of the push rod and the mounting block 121 is in clearance fit, the lantern ring 129 is located below the pressing block 120, and one side of the tops of the two limit blocks 9 is provided with a clamping groove 8.

The bottom fixedly connected with bar-shaped piece 11 of stopper 9, bar-shaped groove 10 has been seted up to the bottom of 6 inner walls in T-shaped groove.

The strip-shaped grooves 10 are preferably provided with three groups, and can be at least suitable for processing strip-shaped workpieces of three types;

when workpieces of different types need to be replaced, the pressing block 120 is pressed, the pressing block 120 pushes the pushing block 126 through the pushing rod, the pushing block 126 drives the driving block 124 through the connecting rod 127 to compress the elastic piece 123 and drives the clamping block to enter the groove 122 and move out of the clamping groove 8, then the pressing block 120 can be limited through the lantern ring 129, and other limiting assemblies 12 are sequentially operated;

then can take stopper 9 out in proper order, then can insert the bar groove 10 that corresponds with the bar piece 11 of two stopper 9 bottoms of different models, correspond well back through with the lantern ring 129 with press the briquetting 120 separately, release the fixture block 128 to draw-in groove 8 inside through the effect of elastic component 123, spacing it, can easy operation convenience, can realize processing the bar work piece of different models, and easy operation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. The utility model provides a rotary worktable is directly driven to mosaic of plane bearing support, includes basic workstation (1), its characterized in that: the rotary table is characterized in that a rotary table (2) is arranged at the top of the base table (1) through a plane needle roller bearing (5), a rotary table base (3) is fixedly arranged at the center of the base table (1) through bolts, a rotary driving assembly (4) is fixedly arranged in the rotary table base (3), the rotary driving assembly (4) comprises a motor cover (41), a torque motor stator (42), a torque motor rotor (43), a motor mandrel (44), an angle encoder (45), a clamping mechanism (46), a ball bearing (47), a roller bearing (48) and a connecting disc (49), the rotary table (2), the connecting disc (49), the motor mandrel (44) and the torque motor rotor (43) are fixedly connected and supported on the rotary table base (3) through the roller bearing (48), and the rotary table base (3) and the torque motor stator (42), The motor cover (41) and the ball bearing (47) are fixedly connected and fixed on the basic workbench (1); the torque motor rotor (43) is supported between a roller bearing (48) and a ball bearing (47), and T-shaped grooves (6) are formed in the tops of the basic workbench (1) and the rotary workbench (2).

2. The embedded direct-drive rotary table supported by a plane bearing as claimed in claim 1, wherein: the angle encoder (45) comprises an encoding support plate (451) and a circular grating (453), wherein the encoding support plate (451) is fixed on the motor cover (41).

3. The embedded direct-drive rotary table supported by a plane bearing as claimed in claim 2, wherein: the circular grating (453) is fixedly arranged on the motor mandrel (44) through a large spacer bush (455), a screw (458) and a locking nut (456), and the reading head (452) is fixedly arranged on the code support disc (451).

4. The embedded direct-drive rotary table supported by a plane bearing as claimed in claim 2, wherein: and a signal processing circuit board (454) is fixedly mounted on the code support plate (451) through a small spacer sleeve (457), a locking nut (456) and a screw (458).

5. The embedded direct-drive rotary table supported by a plane bearing as claimed in claim 1, wherein: the clamping mechanism (46) comprises an oil cylinder (461), a piston (462) is arranged inside the oil cylinder (461), a piston rod (463) is fixedly connected to the top of the piston (462), a cone (464) is fixedly mounted on the surface of the piston rod (463) and located at the top of the oil cylinder (461), and the cone (464) is sleeved on the surface of the piston rod (463) through a center hole.

6. The embedded direct-drive rotary table supported by a plane bearing as claimed in claim 5, wherein: the surface of piston rod (463) just is located the upside cover of cone (464) and is equipped with and presss from both sides tight piece (466), the surface of piston rod (463) just is located the upside cover that presss from both sides tight piece (466) is equipped with and compresses tightly piece (468), the surface of piston rod (463) just is located the upside threaded connection of compressing tightly piece (468) has stop nut, the surface of piston rod (463) just is located the inside cover of cone (464) and is equipped with spring (465), the bottom fixed mounting of hydro-cylinder (461) has the hydro-cylinder lid, venthole (467) has been seted up on the hydro-cylinder lid.

7. The embedded direct-drive rotary table supported by a plane bearing as claimed in claim 1, wherein: the both sides of T shape groove (6) inner wall all are provided with spacing subassembly (12), the inside both sides in T shape groove (6) all have stopper (9) through spacing subassembly (12) joint.

8. The embedded direct-drive rotary table supported by a plane bearing as claimed in claim 7, wherein: the limiting assembly (12) comprises an installation block (121), a placing groove (7) is formed in one side of the top of the installation block (121), a groove (122) is formed in one side of the inner wall of the placing groove (7), a driving block (124) is arranged between two sides of the inner wall of the groove (122), a clamping block (128) is fixedly connected to the top of the driving block (124), and the bottom of the driving block (124) is fixedly connected with the bottom of the inner wall of the groove (122) through an elastic piece (123).

9. The embedded direct-drive rotary table supported by a plane bearing as claimed in claim 8, wherein: one side of the inner surface of the groove (122) is communicated with a rectangular cavity (125) through a sliding groove, a pushing block (126) is arranged in the rectangular cavity (125), a pushing rod is fixedly connected to the top of the pushing block (126), the top end of the pushing rod penetrates through the mounting block (121) and extends to the outside of the mounting block (121), a pressing block is fixedly connected to the top of the pushing rod, a lantern ring (129) is fixedly connected to the top of the mounting block (121), a connecting rod (127) is fixedly connected to one side of the pushing block (126), and one end of the connecting rod (127) penetrates through the driving block (124) and extends to the inside of the driving block (124).

10. The embedded direct-drive rotary table supported by a plane bearing as claimed in claim 7, wherein: the bottom fixedly connected with strip-shaped piece (11) of stopper (9), strip-shaped groove (10) have been seted up to the bottom of T-shaped groove (6) inner wall.

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