Supporting mechanism for rotary table

Abstract

The utility model discloses a supporting mechanism for a rotary table, and relates to the technical field of rotary table supporting. The rotary table comprises an operation table and a rotary table body, the rotary table body is rotationally connected to the top end of the operation table, and an intermittent mechanism is arranged between the top end of the operation table and the bottom end of the rotary table body; a gear rotates to drive a driving wheel to rotate, a driven wheel is in transmission connection with the outer side of the driving wheel through a transmission belt, meanwhile, the driven wheel, a positioning column and one end of a connecting rod are driven to rotate, and the end, away from the positioning column, of the connecting rod is guided through a piston rod; and meanwhile, a piston rod is pushed to reciprocate along the transverse inner wall of a piston barrel, so that a second piston plate and a supporting rod are pushed to vertically reciprocate, when the rotary table body is in a static state under driving of a gap mechanism, the supporting rod is just in contact with one side of the bottom end of the rotary table body, and the rotary table body is stably supported through the supporting rod; therefore, the stability of the edge of the turntable body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary table supporting technical field, concretely is a kind of supporting mechanism for rotary table. BACKGROUND

[0002] As the core functional component in numerical control machine tool and workpiece processing equipment, rotary table is widely used in various processing and testing occasions. The function of rotary table is to carry and rotate workpiece to realize processing or testing requirement of different angles. With the development of industrial technology, the supporting mechanism of rotary table is also evolving to adapt to more efficient and more accurate processing and testing requirements.

[0003] In the prior art, rotary table is usually composed of base, servo motor, rotary table surface and mechanical bearing, etc. The servo motor drives the mechanical bearing to make the rotary table surface rotate, thereby improving the working efficiency of processing or testing. However, the bearing capacity of this traditional mechanical bearing supporting method is limited. When the vertical force acts on the edge of the rotary table surface, torque will be generated. When the edge is subjected to a larger force, its bending stiffness may not be sufficient to resist deformation. To solve the above problems, the inventor proposes a supporting mechanism for rotary table to solve the above problems. SUMMARY

[0004] To solve the problem of stable support of rotary table, the utility model aims at providing a supporting mechanism for rotary table.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a supporting mechanism for rotary table, comprising an operation table and a rotary table body, the rotary table body is rotatably connected to the top end of the operation table, an intermittent mechanism is arranged between the top end of the operation table and the bottom end of the rotary table body, a supporting rod is arranged on one side of the bottom end of the operation table, the supporting rod is used for supporting the rotary table body, a transmission mechanism is arranged between the supporting rod and the intermittent mechanism, the transmission mechanism is used for driving the supporting rod to move vertically and reciprocally.

[0006] Preferably, the intermittent mechanism comprises a gear, the gear is fixedly connected to the outer side of the rotary table body rotating shaft, four fixed blocks symmetrically distributed at equal intervals are fixedly connected to the side surface of the gear and between the gear teeth, arc-shaped grooves are formed in the side of the fixed blocks away from the gear, a rotating wheel is rotatably connected to the side of the top end of the operation table close to the gear, part of gear teeth are arranged on the side surface of the rotating wheel, and the light surface of the rotating wheel and the inner wall of the arc-shaped groove are in close contact.

[0007] Preferably, the transmission mechanism comprises a driven wheel rotatably connected to one side of the top end of the operating table close to the transmission belt, the outer side of the rotating shaft of the rotating table body is fixedly connected with a driving wheel, the diameter of the driving wheel is larger than that of the driven wheel, the transmission belt is transmissionally connected between the outer side of the driving wheel and the driven wheel, the transmission mechanism further comprises a positioning column fixedly connected to one side of the top end of the driven wheel, the outer side of the positioning column is rotatably connected with a connecting rod, one end of the connecting rod away from the positioning column is rotatably connected with a piston rod, one side of the top end of the operating table close to the piston rod is fixedly connected with a piston cylinder, the inside of the piston cylinder is provided with a piston plate one, one side of the piston plate one is fixedly connected with the piston rod, the bottom end of the supporting rod movably extends into the inside of the piston cylinder and is fixedly connected with a piston plate two, one side of the top end of the operating table close to the piston rod is fixedly connected with a guide rod, and the piston rod movably penetrates through the guide rod.

[0008] Preferably, the top end of the operating table is fixedly connected with two fixed plates close to the rotating wheel, a worm is rotatably connected between the two fixed plates, a worm wheel is fixedly connected to the outer side of the rotating shaft of the rotating wheel, one side of one of the fixed plates is fixedly installed with a stepping motor, and the driving end of the stepping motor is fixedly connected with the rotating shaft of the worm.

[0009] Compared with the prior art, the utility model has the advantages that:

[0010] Through the rotation of the gear, the driving wheel is driven to rotate, the transmission belt is transmissionally connected between the outer side of the driving wheel and the driven wheel, the driven wheel, the positioning column and one end of the connecting rod are simultaneously driven to rotate, the piston rod guides one end of the connecting rod away from the positioning column, the piston rod reciprocates along the transverse inner wall of the piston cylinder, the piston plate two and the supporting rod reciprocate vertically, when the rotating table body is in the static state under the driving of the gap mechanism, the supporting rod is in contact with one side of the bottom end of the rotating table body, the rotating table body is stably supported by the supporting rod, and the stability of the edge of the rotating table body is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating laboriously.

[0012] Figure 1 It is the whole structure schematic diagram of the utility model.

[0013] Figure 2The partial structure schematic view of the utility model.

[0014] Figure 3 The utility model Figure 2 The enlarged view of A in the middle.

[0015] Figure 4 The structure schematic view of the transmission mechanism in the utility model.

[0016] Figure 5 The structure schematic view of the worm, the worm wheel and the stepping motor in the utility model.

[0017] In the drawing: 1, operation platform;2, rotary table body;31, gear;32, fixed block;33, arc slot;34, rotating wheel;4, support rod;51, driven wheel;52, driving wheel;53, transmission belt;54, positioning column;55, connecting rod;56, piston cylinder;57, piston plate one;58, piston rod;59, piston plate two;6, fixed plate;7, worm;8, worm wheel;9, stepping motor;10, guide rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0019] Embodiment: as Figures 1-5 The utility model provides a kind of support mechanism for rotary table, including operation platform 1 and rotary table body 2, rotary table body 2 is connected in the top of operation platform 1 rotation, and the bottom end between the top of operation platform 1 and rotary table body 2 is provided with intermittent mechanism, and the bottom end side of operation platform 1 is provided with support rod 4, support rod 4 is used to support rotary table body 2, and transmission mechanism is provided between support rod 4 and intermittent mechanism, and transmission mechanism is used to drive support rod 4 to move vertically reciprocating.

[0020] Intermittent mechanism includes gear 31, gear 31 is fixedly connected on the outside of rotary table body 2 rotating shaft, and four fixed blocks 32 that are equidistantly and centrally symmetrical are fixedly connected on the side of gear 31 and between gear teeth, arc slot 33 is formed on the side of fixed block 32 away from gear 31, rotating wheel 34 is rotationally connected on the side of operation platform 1 close to gear 31, and part of gear teeth are arranged on the side of rotating wheel 34, and the light surface of rotating wheel 34 is matched with the inner wall of arc slot 33.

[0021] By adopting the above technical scheme, when the toothed part of the rotating wheel 34 rotates to engage with the toothed part of the gear 31, the gear 31 and the rotating table body 2 are simultaneously driven to rotate, when the smooth surface of the rotating wheel 34 rotates to abut against the inner wall of the arc-shaped groove 33, the gear 31 remains in a stationary state with the continuous rotation of the rotating wheel 34, thus realizing the intermittent motion of the rotating table body 2, and the intermittent time is utilized, thereby facilitating the machining of the workpiece at the top end of the rotating table body 2.

[0022] The transmission mechanism comprises a driven wheel 51 rotatably connected to one side of the top end of the operating table 1 close to the transmission belt 53, a driving wheel 52 fixedly connected to the outer side of the rotating shaft of the rotating table body 2 and located below the gear 31, and a transmission belt 53 transmissionally connected between the outer sides of the driven wheel 51 and the driving wheel 52. The transmission mechanism further comprises a positioning column 54 fixedly connected to one side of the top end of the driven wheel 51, a connecting rod 55 rotatably connected to the outer side of the positioning column 54, a piston rod 58 rotatably connected to one end of the connecting rod 55 away from the positioning column 54, a piston cylinder 56 fixedly connected to one side of the top end of the operating table 1 close to the piston rod 58, a piston plate one 57 arranged in the interior of the piston cylinder 56, and a piston plate two 59 movably extended into the interior of the piston cylinder 56 and fixedly connected to the bottom end of the supporting rod 4.

[0023] By adopting the above technical scheme, when the gear 31 rotates, the driving wheel 52 is simultaneously driven to rotate, the driven wheel 51, the positioning column 54 and one end of the connecting rod 55 are simultaneously driven to rotate through the transmission belt 53 transmissionally connected between the outer sides of the driven wheel 51 and the driving wheel 52, and one end of the connecting rod 55 away from the positioning column 54 is guided by the piston rod 58, and the piston rod 58 is simultaneously pushed to reciprocate along the lateral inner wall of the piston cylinder 56 under the action of liquid pressure or gas pressure, thereby pushing the piston plate two 59 and the supporting rod 4 to reciprocate vertically. When the supporting rod 4 moves upward to contact one side of the bottom end of the rotating table body 2, the rotating table body 2 is stably supported by the supporting rod 4, thereby improving the stability of the rotating table body 2. When the supporting rod 4 does not contact the bottom surface of the rotating table body 2, friction between the top surface of the supporting rod 4 and the rotating table body 2 can be avoided, thereby reducing the energy consumption when the rotating table body 2 rotates.

[0024] Two fixed plates 6 are fixedly connected to one side of the top end of the operating table 1 close to the rotating wheel 34, a worm 7 is rotatably connected between the two fixed plates 6, a worm wheel 8 is fixedly connected to the outer side of the rotating shaft of the rotating wheel 34, one side of one of the fixed plates 6 is fixedly installed with a stepping motor 9, and the driving end of the stepping motor 9 is fixedly connected with the rotating shaft of the worm 7.

[0025] By adopting the technical scheme, the worm 7 is driven to rotate by the stepping motor 9, the worm 7 is engaged with the worm wheel 8, the worm wheel 8 is driven to rotate, the driving of the device is realized, and the reverse self-locking property is provided between the worm 7 and the worm wheel 8, so that the stability of the device in operation is further improved.

[0026] The top end of the operation table 1 is fixedly connected with the guide rod 10 on the side close to the piston rod 58, and the piston rod 58 is movably penetrated through the guide rod 10.

[0027] By adopting the technical scheme, the guide rod 10 is arranged, the lateral movement of the piston rod 58 is guided, and the stability of the piston rod 58 in lateral movement is improved.

[0028] The diameter of the driving wheel 52 is greater than the diameter of the driven wheel 51.

[0029] By adopting the technical scheme, the diameter of the driving wheel 52 is greater than the diameter of the driven wheel 51, the driven wheel 51 can rotate one circle when the gear 31 rotates one fourth, and the support rod 4 can always contact the bottom surface of the rotary table body 2 when the rotary table body 2 is intermittent.

[0030] Working principle: when the rotary table is supported, the worm 7 is driven to rotate by the stepping motor 9, the worm 7 is engaged with the worm wheel 8, the worm wheel 8 and the rotating wheel 34 are driven to rotate, the gear 31 and the rotary table body 2 are driven to rotate when the tooth part of the rotating wheel 34 is engaged with the tooth part of the gear 31, the gear 31 keeps in a stationary state when the smooth surface of the rotating wheel 34 is in contact with the inner wall of the arc-shaped groove 33 with the continuous rotation of the rotating wheel 34, the intermittent movement of the rotary table body 2 is realized, the workpiece on the top end of the rotary table body 2 is conveniently machined by using the intermittent time.

[0031] Meanwhile, the driving wheel 52 is driven to rotate when the gear 31 rotates, the driven wheel 51, the positioning column 54 and one end of the connecting rod 55 are driven to rotate by the transmission belt 53 between the outer side of the driving wheel 52 and the driven wheel 51, the end of the connecting rod 55 away from the positioning column 54 is guided by the piston rod 58, the piston rod 58 reciprocates along the lateral inner wall of the piston cylinder 56, the piston plate two 59 and the support rod 4 are driven to reciprocate vertically, the rotary table body 2 is stably supported by the support rod 4 when the support rod 4 moves upward to contact the bottom end of the rotary table body 2, the stability of the rotary table body 2 is improved, and the friction between the top surface of the support rod 4 and the rotary table body 2 is avoided when the support rod 4 does not contact the bottom surface of the rotary table body 2, so that the energy consumption of the rotary table body 2 in rotation is reduced.

[0032] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A support mechanism for a turntable comprising an operating table (1) and a turntable body (2), characterized in that: The rotating platform body (2) is rotationally connected to the top end of the operating table (1), an intermittent mechanism is arranged between the top end of the operating table (1) and the bottom end of the rotating platform body (2), a supporting rod (4) is arranged on the bottom end side of the operating table (1), the supporting rod (4) is used for supporting the rotating platform body (2), a transmission mechanism is arranged between the supporting rod (4) and the intermittent mechanism, and the transmission mechanism is used for driving the supporting rod (4) to vertically reciprocate.

2. A support mechanism for a turntable as claimed in claim 1, wherein The intermittent mechanism comprises a gear (31) fixedly connected to the outer side of the rotating shaft of the rotating platform body (2), four fixed blocks (32) symmetrically and equidistantly distributed are fixedly connected to the side of the gear (31) and between the gear teeth, arc-shaped grooves (33) are formed in the side, away from the gear (31), of each fixed block (32), a rotating wheel (34) is rotationally connected to the side, close to the gear (31), of the top end of the operating table (1), and part of the gear teeth are arranged on the side of the rotating wheel (34), and the light surface of the rotating wheel (34) is in abutment with the inner wall of the arc-shaped groove (33).

3. A support mechanism for a turntable as claimed in claim 1, wherein The transmission mechanism comprises a driven wheel (51) rotationally connected to the side, close to a transmission belt (53), of the top end of the operating table (1), a driving wheel (52) is fixedly connected to the outer side of the rotating shaft of the rotating platform body (2) and below the gear (31), and the transmission belt (53) is in transmission connection between the outer sides of the driven wheel (51) and the driving wheel (52).

4. The support mechanism for a turntable as set forth in claim 1, wherein The transmission mechanism further comprises a positioning column (54) fixedly connected to the top end side of the driven wheel (51), a connecting rod (55) rotationally connected to the outer side of the positioning column (54), a piston rod (58) rotationally connected to the end, away from the positioning column (54), of the connecting rod (55), a piston cylinder (56) fixedly connected to the side, close to the piston rod (58), of the top end of the operating table (1), a piston plate one (57) arranged in the piston cylinder (56), the side of the piston plate one (57) fixedly connected with the piston rod (58), and a piston plate two (59) movably extended into the piston cylinder (56) and fixedly connected to the bottom end of the supporting rod (4).

5. The support mechanism for a turntable as set forth in claim 1, wherein Two fixed plates (6) are fixedly connected to the side, close to the rotating wheel (34), of the top end of the operating table (1), a worm (7) rotationally connected between the two fixed plates (6), a worm wheel (8) fixedly connected to the outer side of the rotating shaft of the rotating wheel (34), and the worm (7) and the worm wheel (8) are in meshing connection.

6. A support mechanism for a turntable as claimed in claim 5, wherein A stepping motor (9) is fixedly mounted on the side of one of the fixed plates (6), and the driving end of the stepping motor (9) is fixedly connected with the rotating shaft of the worm (7).

7. A support mechanism for a turntable as claimed in claim 3, wherein A guide rod (10) is fixedly connected to the side, close to the piston rod (58), of the top end of the operating table (1), and the piston rod (58) movably penetrates through the guide rod (10).

8. A support mechanism for a turntable as claimed in claim 3, wherein The diameter of the driving wheel (52) is greater than the diameter of the driven wheel (51).

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