Five-axis rotary table and machine tool

Abstract

The utility model discloses a five-axis turntable and a machine tool. The five-axis turntable comprises a bottom plate, a main seat, a tail seat, a connecting seat and a turntable, the main base and the tail base are fixed to the two ends of the bottom plate respectively, and the main base is provided with an inclined shaft harmonic reducer and a four-shaft servo motor used for driving the inclined shaft harmonic reducer. One end of the connecting base is provided with a connecting disc fixedly connected with the inclined shaft harmonic reducer, and the other end of the connecting base is provided with a connecting boss rotationally connected with the tailstock. A rotating shaft harmonic reducer and a five-axis servo motor for driving the rotating shaft harmonic reducer are arranged in the connecting seat; the rotating disc is rotationally installed at the top end of the connecting base and fixedly connected with the rotating shaft harmonic reducer.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tools, in particular to an auxiliary device of a machine tool. Background Art

[0002] The five-axis turntable is an important auxiliary device of the machine tool. It can provide the machine tool with the fourth and fifth rotational processing degrees of freedom in addition to the three XYZ processing degrees of freedom. The existing five-axis turntables on the market generally use a worm gear drive reducer, but the worm gear drive reducer has low transmission efficiency, large size and weight, which makes it inconvenient to install the five-axis turntable on the machine tool for use, and has poor practicality. Utility Model Content

[0003] In view of this, the utility model provides a five-axis turntable and a machine tool, which are used to solve the problem that the five-axis turntable in the prior art is large in size and heavy in weight, resulting in impracticality.

[0004] To achieve one or part or all of the above purposes or other purposes, the utility model proposes: a five-axis turntable for a machine tool, the five-axis turntable comprising: a base plate, a main seat, a tail seat, a connecting seat and a turntable;

[0005] The main seat and the tail seat are respectively fixed at two ends of the base plate, and the main seat is provided with a tilt-axis harmonic reducer and a four-axis servo motor for driving the tilt-axis harmonic reducer;

[0006] One end of the connection seat is provided with a connection plate fixedly connected to the tilting axis harmonic reducer, and the other end of the connection seat is provided with a connection boss rotatably connected to the tailstock; a rotating axis harmonic reducer and a five-axis servo motor for driving the rotating axis harmonic reducer are provided in the connection seat;

[0007] The turntable is rotatably mounted on the top of the connecting seat, and the turntable is fixedly connected to the rotating shaft harmonic reducer.

[0008] Preferably, a avoidance hole is provided in the middle of the base plate, and the avoidance hole is arranged corresponding to the bottom end of the connecting seat. The bottom end of the connecting seat can be placed in the avoidance hole, and when the connecting seat rotates around the tilting axis, the bottom end of the connecting seat can be rotated out of the avoidance hole.

[0009] Preferably, the upper end of the avoidance hole is chamfered, and the bottom end of the connecting seat is an arc-shaped structure.

[0010] Preferably, the tailstock comprises a support bearing and a side cover plate, and a mounting hole is provided on the tailstock;

[0011] A limiting convex ring is provided on the hole wall of the mounting hole, and a sealing rubber ring is provided on the inner side of the limiting convex ring of the mounting hole; the support bearing is embedded in the mounting hole and abuts against the outer side wall of the limiting convex ring, the connecting boss of the connecting seat passes through the sealing rubber ring and is fixedly connected to the movable ring of the support bearing, and the side wall of the connecting boss provided on the connecting seat abuts against the sealing rubber ring;

[0012] The side cover plate is provided with a positioning protrusion which abuts against the fixing ring of the support bearing. The side cover plate is fixed on the tailstock and covers the mounting hole.

[0013] Preferably, the tailstock also includes a five-axis L-shaped wire tube, and the side cover plate is provided with a through hole coaxial with the support bearing. The five-axis L-shaped wire tube covers the outer wall of the side cover plate and is connected to the through hole, and the opening of the five-axis L-shaped wire tube is set downward, and the five-axis L-shaped wire tube is used for wiring of the five-axis servo motor.

[0014] Preferably, the internal cavity of the connecting seat is arranged to facilitate installation of the five-axis servo motor and the rotary shaft harmonic reducer, and the connecting boss of the connecting seat is arranged to be hollow to facilitate outward pulling of the wires of the five-axis servo motor.

[0015] Preferably, a mounting shell is provided on the main seat, the mounting shell is used to accommodate the four-axis servo motor, and a four-axis L-shaped wire tube is provided on the outer wall of the mounting shell, the four-axis L-shaped wire tube is used for routing the wires of the four-axis servo motor.

[0016] Preferably, the bottom plate is provided with a plurality of waist-shaped connection holes around the avoidance hole, and the waist-shaped connection holes are used for connecting the bottom plate to an external machine tool.

[0017] Preferably, the turntable is provided with a plurality of clamp connection holes, and the plurality of clamp connection holes are distributed in multiple rings inside and outside the turntable.

[0018] A machine tool comprises the above-mentioned five-axis turntable.

[0019] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0020] After adopting the above-mentioned five-axis turntable, the degree of freedom of the fourth axis is realized by installing a tilting axis harmonic reducer and a four-axis servo motor in the main seat to drive the tilting and swinging of the connecting seat; the degree of freedom of the fifth axis is realized by installing a rotating axis harmonic reducer and a five-axis servo motor in the connecting seat to drive the 360-degree rotation of the turntable; the fourth and fifth axes are both equipped with harmonic reducers, which greatly reduces the installation space occupied by the reducer of the five-axis turntable, so that the five-axis servo motor and the rotating axis harmonic reducer can be installed in the connecting seat for use, so that the five-axis turntable does not need other transmission mechanisms, reduces weight, and the compact five-axis turntable is more practical and has more promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] in:

[0023] Figure 1 This is a schematic diagram of the overall structure of the five-axis turntable proposed by the utility model;

[0024] Figure 2 This is a side view of the overall structure of the five-axis turntable proposed by the utility model;

[0025] Figure 3 This is an exploded view of the overall structure of the five-axis turntable proposed by the utility model;

[0026] Figure 4 This is a schematic structural diagram of the tailstock of the five-axis turntable proposed in the utility model;

[0027] Figure 5 This is a schematic structural diagram of the bottom plate of the five-axis turntable proposed in the utility model.

[0028] Figure numerals: 1 base plate, 10 avoidance hole, 11 waist-shaped connecting hole, 2 main seat, 20 mounting shell, 21 four-axis L-shaped wire tube, 3 tail seat, 30 mounting hole, 300 limiting convex ring, 301 sealing rubber ring, 31 support bearing, 32 side cover plate, 320 positioning protrusion, 33 five-axis L-shaped wire tube, 4 connecting seat, 40 connecting disk, 41 connecting boss, 5 turntable, 50 fixture connecting hole, 6 tilting axis harmonic reducer, 7 four-axis servo motor, 8 rotating axis harmonic reducer, 9 five-axis servo motor. DETAILED DESCRIPTION

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0032] like Figure 1-5 The example shown is an embodiment provided by the utility model.

[0033] The utility model embodiment provides a five-axis turntable for machine tools, characterized in that the five-axis turntable includes: a base plate 1, a main seat 2, a tail seat 3, a connecting seat 4 and a turntable 5; the main seat 2 and the tail seat 3 are respectively fixed at both ends of the base plate 1, and the main seat 2 is provided with a tilting axis harmonic reducer 6 and a four-axis servo motor 7 for driving the tilting axis harmonic reducer 6; one end of the connecting seat 4 is provided with a connecting disk 40 fixedly connected to the tilting axis harmonic reducer 6, and the other end of the connecting seat 4 is provided with a connecting boss 41 rotatably connected to the tail seat 3; a rotating axis harmonic reducer 8 and a five-axis servo motor 9 for driving the rotating axis harmonic reducer 8 are provided in the connecting seat 4; the turntable 5 is rotatably installed on the top end of the connecting seat 4, and the turntable 5 is fixedly connected to the rotating axis harmonic reducer 8.

[0034] Specifically, the five-axis turntable is installed on a machine tool for use, wherein the five-axis servo motor 9 and the four-axis servo motor 7 are connected to the CNC center of the machine tool through wires, and the five-axis servo motor 9 and the four-axis servo motor 7 are controlled by the CNC center to realize the tilting and swinging of the connecting seat 4 and the rotation of the turntable 5. In order to facilitate the clamping of the workpiece, a plurality of clamp connection holes 50 are provided on the turntable 5, and the plurality of clamp connection holes 50 are distributed in multiple rings inside and outside the turntable 5 to facilitate the installation of clamps of different models or sizes for clamping the workpiece for processing; in this embodiment, a through hole is opened on the main seat 2 to install the inclined axis harmonic reducer 6, so that the entire inclined axis harmonic reducer 6 is embedded in the through hole of the main seat 2, which greatly saves the space occupied by the reducer structure, thereby reducing the five-axis In order to reduce the volume of the turntable, the present embodiment further provides a plurality of through holes at the upper and lower ends of the connecting disk 40 of the connecting seat 4, for fastening bolts to penetrate therethrough and then be threadedly connected to the inclined axis harmonic reducer 6, and an O-ring is provided between the connecting disk 40 and the inclined axis harmonic reducer 6 to prevent external coolant from entering the interior and affecting the operation of various components. In addition, the internal cavity of the connecting seat 4 of the present embodiment is arranged so that the five-axis servo motor 9 and the rotating axis harmonic reducer 8 can be installed in the connecting seat 4, and there is no need to place the five-axis servo motor 9 and the rotating axis harmonic reducer 8 externally on the tailstock 3 or the main seat 2 and then use a transmission mechanism to drive the turntable 5, thereby efficiently utilizing the internal space of the connecting seat 4, so that the overall structure of the five-axis turntable is more compact and occupies a smaller area. It should also be noted that the distance from the connecting disk 40 of the connecting seat 4 to the outer wall of the connecting seat 4 with the connecting boss 41 is equal to the distance between the main seat 2 and the tail seat 3. Through the structural design of the connecting seat 4, the distance between the main seat 2 and the tail seat 3 is reduced, and then the length of the base plate 1 is shortened, thereby reducing the installation area of ​​the five-axis turntable, and can be more flexibly applied to various types of machine tools, which is more practical.

[0035] In general, the five-axis turntable realizes the freedom of the fourth axis by installing a tilting-axis harmonic reducer 6 and a four-axis servo motor 7 in the main seat 2 to drive the tilting and swinging of the connecting seat 4; the freedom of the fifth axis is realized by installing a rotating-axis harmonic reducer 8 and a five-axis servo motor 9 in the connecting seat 4 to drive the 360-degree rotation of the turntable 5; the fourth and fifth axes are both equipped with harmonic reducers, which greatly reduces the installation space occupied by the reducer of the five-axis turntable, so that the five-axis servo motor 9 and the rotating-axis harmonic reducer 8 can be installed in the connecting seat 4 for use, so that the five-axis turntable does not need other transmission mechanisms, reduces weight, and the compact five-axis turntable is more practical and has more promotion value.

[0036] In order to further reduce the weight of the five-axis turntable and improve the utilization rate of the internal space of the five-axis turntable, an avoidance hole 10 is provided in the middle of the base plate 1, and the avoidance hole 10 is arranged corresponding to the bottom end of the connecting seat 4. The bottom end of the connecting seat 4 can be placed in the avoidance hole 10, and when the connecting seat 4 rotates around the tilting axis, the bottom end of the connecting seat 4 can be rotated out of the avoidance hole 10. The avoidance hole 10 is formed by hollowing out most of the middle part of the base plate 1, so that the bottom end part of the connecting seat 4 is in the avoidance hole 10 of the base plate 1, thereby reducing the required installation height of the connecting seat 4. At the same time, the heights of the main seat 2 and the tail seat 3 are reduced. In order to allow the connecting seat 4 to tilt and swing smoothly without being interfered by the base plate 1, the upper end of the avoidance hole 10 is also chamfered in this embodiment, and the bottom end of the connecting seat 4 is an arc-shaped structure to avoid interference of the base plate 1 on the connecting seat 4.

[0037] See attached Figure 3 and attached Figure 4 The tailstock 3 includes a support bearing 31 and a side cover plate 32. A mounting hole 30 is provided on the tailstock 3. A limiting convex ring 300 is provided on the hole wall of the mounting hole 30. A sealing rubber ring 301 is provided on the inner side of the limiting convex ring 300 of the mounting hole 30. The support bearing 31 is embedded in the mounting hole 30 and abuts against the outer side wall of the limiting convex ring 300. The connecting boss 41 of the connecting seat 4 passes through the sealing rubber ring 301 and is fixedly connected to the movable ring of the support bearing 31. The connecting seat 4 is provided with a side wall of the connecting boss 41 abutting against the sealing rubber ring 301. A positioning protrusion 320 abutting against the fixing ring of the support bearing 31 is provided on the side cover plate 32. The side cover plate 32 is fixed on the tailstock 3 and covers the mounting hole 30. The sealing rubber ring 301 can prevent external coolant from entering the mounting hole 30 and soaking the support bearing 31, thereby increasing the service life of the support bearing 31. The limiting convex ring 300 and the positioning protrusion 320 on the side cover plate 32 can stably install the support bearing 31 in the tail stock 3. In this embodiment, the support bearing 31 is arranged in the tail stock 3, so that the connecting boss 41 of the connecting seat 4 can be inserted into the tail stock 3, thereby reducing the distance between the tail stock 3 and the main seat 2, thereby achieving the effect of reducing the volume.

[0038] In order to facilitate the signal connection and electrical connection between the five-axis servo motor 9 and the CNC center of the machine tool, the tailstock 3 also includes a five-axis L-shaped wire tube 33. The side cover plate 32 is provided with a through hole coaxial with the support bearing 31. The five-axis L-shaped wire tube 33 covers the outer wall of the side cover plate 32 and is connected to the through hole, and the opening of the five-axis L-shaped wire tube 33 is set downward. The five-axis L-shaped wire tube 33 is used for the wiring of the five-axis servo motor 9. Specifically, the connecting boss 41 of the connecting seat 4 is hollow, so that the wires of the five-axis servo motor 9 can pass through the connecting boss 41, the tailstock 3 and the five-axis L-shaped wire tube 33 to connect with the external CNC center. The opening of the five-axis L-shaped wire tube 33 is facing downward to prevent external coolant from passing through the five-axis L-shaped wire tube 33 during operation and entering the mounting hole 30 of the tailstock 3 to corrode the support bearing 31.

[0039] Correspondingly, in this embodiment, a mounting shell 20 is provided on the main seat 2, and the mounting shell 20 is used to accommodate the four-axis servo motor 7, and a four-axis L-shaped wire tube 21 is provided on the outer wall of the mounting shell 20, and the four-axis L-shaped wire tube 21 is used for routing the wires of the four-axis servo motor 7, so that the wires of the four-axis servo motor 7 can be connected to the external CNC center through the four-axis L-shaped wire tube 21.

[0040] See attached Figure 5 The base plate 1 is provided with a plurality of waist-shaped connecting holes 11 on the surrounding side of the avoidance hole 10. The waist-shaped connecting holes 11 are used for connecting the base plate 1 to the machine tool. The setting of the waist-shaped connecting holes 11 facilitates the connection between the five-axis turntable and the machine tool and improves the fault tolerance of the installation.

[0041] In other embodiments, a machine tool is provided, comprising the above-mentioned five-axis turntable.

[0042] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A five-axis turntable for a machine tool, characterized in that: The five-axis rotary table includes: base plate, main seat, tail seat, connecting seat and turntable; The main seat and the tail seat are respectively fixed at two ends of the base plate, and the main seat is provided with a tilt-axis harmonic reducer and a four-axis servo motor for driving the tilt-axis harmonic reducer; One end of the connection seat is provided with a connection plate fixedly connected to the tilting axis harmonic reducer, and the other end of the connection seat is provided with a connection boss rotatably connected to the tailstock; a rotating axis harmonic reducer and a five-axis servo motor for driving the rotating axis harmonic reducer are provided in the connection seat; The turntable is rotatably mounted on the top of the connecting seat, and the turntable is fixedly connected to the rotating shaft harmonic reducer.

2. The five-axis turntable according to claim 1, characterized in that: A avoidance hole is provided in the middle of the bottom plate, and the avoidance hole is arranged corresponding to the bottom end of the connecting seat. The bottom end of the connecting seat can be placed in the avoidance hole, and when the connecting seat rotates around the tilting axis, the bottom end of the connecting seat can be rotated out of the avoidance hole.

3. The five-axis turntable according to claim 2, characterized in that: The upper end of the avoidance hole is chamfered, and the bottom end of the connecting seat is an arc-shaped structure.

4. The five-axis turntable according to claim 1, characterized in that: The tailstock comprises a support bearing and a side cover plate, and a mounting hole is provided on the tailstock; A limiting convex ring is provided on the hole wall of the mounting hole, and a sealing rubber ring is provided on the inner side of the limiting convex ring of the mounting hole; the support bearing is embedded in the mounting hole and abuts against the outer side wall of the limiting convex ring, the connecting boss of the connecting seat passes through the sealing rubber ring and is fixedly connected to the movable ring of the support bearing, and the side wall of the connecting boss provided on the connecting seat abuts against the sealing rubber ring; The side cover plate is provided with a positioning protrusion which abuts against the fixing ring of the support bearing. The side cover plate is fixed on the tailstock and covers the mounting hole.

5. The five-axis turntable according to claim 4, characterized in that: The tailstock also includes a five-axis L-shaped wire tube. The side cover plate is provided with a through hole coaxial with the support bearing. The five-axis L-shaped wire tube covers the outer wall of the side cover plate and is connected to the through hole, and the opening of the five-axis L-shaped wire tube is set downward. The five-axis L-shaped wire tube is used for wiring of the five-axis servo motor.

6. The five-axis turntable according to claim 5, characterized in that: The internal cavity of the connecting seat is arranged to facilitate installation of the five-axis servo motor and the rotary shaft harmonic reducer, and the connecting boss of the connecting seat is arranged to be hollow to facilitate outward pulling of the wires of the five-axis servo motor.

7. The five-axis turntable according to claim 1, characterized in that: A mounting shell is provided on the main seat, and the mounting shell is used to accommodate the four-axis servo motor. A four-axis L-shaped wire tube is provided on the outer wall of the mounting shell, and the four-axis L-shaped wire tube is used for routing the wires of the four-axis servo motor.

8. The five-axis turntable according to claim 2, characterized in that: The bottom plate is provided with a plurality of waist-shaped connection holes on the peripheral side of the avoidance hole, and the waist-shaped connection holes are used for connecting the bottom plate to an external machine tool.

9. The five-axis turntable according to claim 2, characterized in that: The turntable is provided with a plurality of clamp connection holes, and the plurality of clamp connection holes are distributed in multiple inner and outer rings on the turntable.

10. A machine tool, characterized in that: A five-axis turntable comprising the five-axis turntable described in any one of claims 1 to 9.

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