AC cradle rotary table utilizing combination of oscillating tooth speed reducer and torque motor

Abstract

The utility model discloses an AC cradle rotary table utilizing the combination of a movable tooth speed reducer and a torque motor, which comprises an A-axis rotary table and a C-axis rotary table which are connected in the horizontal direction, an A-axis direct drive module comprises the movable tooth speed reducer and an inner rotor torque motor, and the movable tooth speed reducer comprises an input end and an output end; a rotor of the inner rotor torque motor is fixedly connected with an input shaft, and the input shaft is fixedly installed at the input end of the oscillating tooth speed reducer. The output disc is fixedly connected with the output end of the oscillating tooth speed reducer, and the hollow shaft is fixedly connected to the output disc and rotates along with the output disc. And the torque motor stator shell is fixedly connected with a stator of the inner rotor torque motor. By adopting the structure of combining the oscillating tooth speed reducer and the torque motor, the necessary positioning accuracy of the A shaft and the C shaft can be ensured, and the size and the weight of the rotary table are obviously reduced. And meanwhile, the small-torque motor is combined with the high-efficiency and large-speed-ratio oscillating tooth speed reducer, so that the transmission efficiency is high, the output torque is large, and the use cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of AC cradle turntables, and particularly relates to an AC cradle turntable using a combination of a cycloid speed reducer and a torque motor. Background Technique

[0002] The AC cradle turntable is an important component of a cutting processing device, and can position and process workpieces through rotational motion and tilting motion. In a five-axis CNC machine tool, through the combination of two rotational degrees of freedom and three linear degrees of freedom of the AC cradle turntable, the machining tool can perform multi-directional cutting on the machining surface, thereby meeting the machining requirements of complex curved surfaces. It has important application value in improving production efficiency, improving surface quality, and realizing complex curved surface machining.

[0003] The common structure of the AC cradle turntable is an A-axis composed of a worm and gear turntable or a cam roller turntable or a direct drive motor turntable, which is matched with a C-axis composed of a direct drive motor turntable. However, it is found in actual applications that due to the structural characteristics of the worm and gear turntable and the roller cam turntable, in order to obtain a large reduction ratio and torque, the external dimensions of the turntable are relatively large, which greatly occupies the internal space of the machine tool. Although the direct drive motor turntable has a simple structure, due to the absence of a reduction link, in order to obtain a large torque, its external dimensions are still relatively large, and the energy consumption is high and the price is expensive. Content of the Utility Model

[0004] In order to meet the requirements of the AC cradle turntable, such as compact structure, large torque, high efficiency, high precision, low energy consumption, low cost, and long service life, based on the existing cycloid speed reducer, the utility model provides an AC cradle turntable using a combination of a cycloid speed reducer and a torque motor.

[0005] An AC cradle turntable using a combination of a cycloid speed reducer and a torque motor includes an A-axis turntable and a C-axis turntable connected horizontally. The A-axis turntable includes an A-axis direct drive module, and the C-axis turntable includes a C-axis direct drive module. The C-axis direct drive module is fixedly connected to the output end of the A-axis direct drive module and rotates with the A-axis.

[0006] The A-axis direct drive module includes a cycloid speed reducer, an inner rotor torque motor, an input shaft, an output disk, and a hollow shaft. The cycloid speed reducer includes an input end and an output end. The rotor of the inner rotor torque motor is installed on the input shaft through a fifth screw, and the input shaft is fixedly installed at the input end of the cycloid speed reducer through a sixth screw. The output disk is fixedly installed at the output end of the cycloid speed reducer through a seventh screw, and the hollow shaft is fixedly installed on the output disk through an eighth screw and rotates with the output disk. The stator housing of the torque motor is installed on the housing of the cycloid speed reducer through an eleventh screw and is fixedly connected to the stator of the inner rotor torque motor through a twelfth screw.

[0007] Preferably, the A-axis direct drive module further includes an output encoder, which is installed on the encoder seat through the ninth screw, and the encoder seat is fixedly installed on the hollow shaft through a locking nut.

[0008] Preferably, the A-axis direct drive module further includes a brake sleeve, which is fixedly installed on the housing of the harmonic reducer through the tenth screw.

[0009] Preferably, a coolant circuit is arranged inside the stator housing of the torque motor, and a pipeline joint is provided on the stator housing of the torque motor, and the pipeline joint is connected to the coolant circuit.

[0010] Preferably, the A-axis turntable further includes a box body, and the A-axis direct drive module is fixedly installed in the box body through the first screw; the C-axis turntable further includes a cradle box body, and the C-axis direct drive module is fixedly arranged on the cradle box body; the cradle box body is fixedly installed at the output end of the A-axis direct drive module through the third screw.

[0011] Preferably, it further includes a support assembly, and the cradle box body is connected to the support assembly through the fourth screw on the side away from the A-axis turntable.

[0012] Preferably, the support assembly includes a support box body, a bearing seat, a bearing, a gland and a support shaft. The bearing seat is installed on the support box body through the thirteenth screw, the bearing is arranged in the bearing seat, and the gland is fixedly connected to the bearing seat through the fourteenth screw; the sealing ring is installed in the inner hole of the bearing seat and the inner hole of the gland; the left disk surface of the support shaft is fixedly connected to the cradle box body, and the right shaft end is installed in the inner hole of the bearing.

[0013] Preferably, the bearing is an angular contact ball bearing, and two bearings are arranged side by side.

[0014] With the combination of direct drive modules of different specifications, the present utility model can be combined into various specifications of AC cradle turntables to meet different usage requirements.

[0015] The beneficial effects brought by adopting this technical solution:

[0016] 1. The present utility model adopts the structure of combining a harmonic reducer and a torque motor, and is equipped with a high-precision grating at the same time, which can ensure the necessary positioning accuracy of the A and C axes, and significantly reduce the volume and weight of the turntable. At the same time, the combination of a small torque motor and a high-efficiency, large speed ratio harmonic reducer has high transmission efficiency and large output torque, which can effectively reduce the usage cost.

[0017] 2. The support end adopts floating support, without overconstraint, which can significantly reduce the assembly difficulty and manufacturing cost.

[0018] 3. Both the A and C axes adopt modular design, which is convenient for installation and adjustment, and is convenient for maintenance and replacement. Description of the Drawings

[0019] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the application of the blisk processing of the present invention.

[0021] Figure 2 It is a sectional view of the AC cradle turntable using the combination of a harmonic reducer and a torque motor of the present utility model.

[0022] Figure 3 It is a sectional view of the A-axis direct drive module.

[0023] Figure 4 It is a sectional view of the support assembly.

[0024] In the figure:

[0025] 01. A-axis direct drive module,

[0026] 01-01. Harmonic reducer, 01-02. Inner rotor torque motor, 01-03. Input shaft, 01-04. Fifth screw, 01-05. Sixth screw, 01-06. Output disk, 01-07. Seventh screw, 01-08. Hollow shaft, 01-09. Eighth screw, 01-10. Output end encoder, 01-11. Ninth screw, 01-12. Encoder seat, 01-13. Locking nut, 01-14. Brake sleeve, 01-15. Tenth screw, 01-16. Torque motor stator housing, 01-17. Eleventh screw, 01-18. Twelfth screw, 01-19. Pipeline joint,

[0027] 02. First screw,

[0028] 03. Box body,

[0029] 04. Second screw,

[0030] 05. Cradle box body,

[0031] 06. Third screw,

[0032] 07. Support assembly,

[0033] 07-01. Support box body, 07-02. Bearing seat, 07-03. Thirteenth screw, 07-04. Bearing, 07-05. Gland, 07-06. Fourteenth screw, 07-07. Sealing ring, 07-08. Support shaft,

[0034] 08. Fourth screw,

[0035] 09. C-axis direct drive module. Specific embodiments

[0036] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0037] like Figure 1 As shown, the utility model relates to an AC cradle turntable utilizing a movable tooth reducer and a torque motor combination, which is arranged horizontally in three sections, the first section being an A-axis turntable, the second section being a C-axis turntable, and the third section being a supporting assembly.

[0038] Figure 2 It is a cross-sectional view of an AC cradle turntable using a combination of a movable tooth reducer and a torque motor, wherein 01 is the A-axis direct drive module, which is fixedly installed in the box 03 by the first screw 02, 09 is the C-axis direct drive module, which is fixedly installed on the cradle box 05 by the second screw 04, one side of the cradle box 05 is fixedly installed on the output end of the A-axis direct drive module 01 by the third screw 06, and rotates with the A-axis, and the other side is connected to the support assembly 07 by the fourth screw 08.

[0039] Figure 3 This is a cross-sectional view of the A-axis direct drive module 01. 01-01 is a movable tooth reducer, which serves as the base of the drive unit and carries the remaining components. 01-02 is an inner rotor torque motor, whose rotor is mounted on the input shaft 01-03 through the fifth screw 01-04. The input shaft 01-03 is fixedly mounted on the input end of the movable tooth reducer 01-01 through the sixth screw 01-05. 01-06 is an output disk, which is fixedly mounted on the output end of the movable tooth reducer 01-01 through the seventh screw 01-07. 01-08 is a hollow shaft, which is fixedly mounted on the output disk 01-06 through the eighth screw 01-09 and rotates with the output disk 01-06. 01-10 is the output encoder, which is installed on the encoder seat 01-12 through the ninth screw 01-11. The encoder seat 01-12 is fixedly installed on the hollow shaft 01-08 through the locking nut 01-13, so that the output encoder 01-10 and the output disk 01-06 rotate synchronously to accurately control the direct drive module. 01-14 is the brake sleeve, which is fixedly installed on the housing of the movable tooth reducer 01-01 through the tenth screw 01-15. When the brake oil is introduced, the inner hole shrinks and holds the output disk 01-06 tightly to achieve the braking function. 01-16 is the torque motor stator housing, which is installed on the housing of the movable tooth reducer 01-01 through the eleventh screw 01-17. The stator of the inner rotor torque motor 01-02 is fixed by the twelfth screw 01-18. A coolant circuit is arranged inside it, and coolant is injected through the pipe joint 01-19 to cool the torque motor.

[0040] The structure of the C-axis direct drive module is the same as that of the A-axis and will not be described in detail here.

[0041] Figure 4It is a sectional view of the support component 07. Among them, 07-01 is the support box body. 07-02 is the bearing seat, which is installed on the support box body 07-01 through the thirteenth screw 07-03. 07-04 is the bearing. The bearing 07-04 is preferably an angular contact ball bearing. The bearings 07-04 are installed in pairs in the bearing seat 07-02. The gland 07-05 is pressed against one end of the bearing seat 07-02 through the fourteenth screw 07-06 to eliminate the internal clearance of the angular contact ball bearing. 07-07 is the sealing ring, which is installed in the inner hole of the bearing seat 07-02 and the inner hole of the gland 07-05 to prevent sundries from entering the bearing. 07-08 is the support shaft. The left side disk surface is connected to the cradle box body 05, and the right side shaft end is installed in the inner hole of the bearing, only bearing the radial force and capable of axial displacement in the inner hole of the bearing to ensure the smooth rotation of the cradle box body. When the workpiece to be machined is relatively light, the C-axis module can use a smaller specification, and the 07 support part can be cancelled to further release space and reduce costs.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0043] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set", "provided", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0044] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An AC cradle turntable using a combination of a movable tooth reducer and a torque motor, characterized in that: It comprises an A-axis turntable and a C-axis turntable connected in a horizontal direction, the A-axis turntable comprises an A-axis direct drive module (01), the C-axis turntable comprises a C-axis direct drive module (09), and the C-axis direct drive module (09) is fixedly connected to the output end of the A-axis direct drive module (01); The A-axis direct drive module (01) comprises a movable tooth reducer (01-01), an inner rotor torque motor (01-02), an input shaft (01-03), an output disc (01-06) and a hollow shaft (01-08), wherein the movable tooth reducer (01-01) comprises an input end and an output end; the rotor of the inner rotor torque motor (01-02) is fixedly connected to the input shaft (01-03), and the input shaft (01-03) is fixedly connected to the movable tooth reducer (01-01). The input end of the gear reducer (01-01); the output disk (01-06) is fixedly connected to the output end of the movable tooth reducer (01-01), and the hollow shaft (01-08) is fixedly connected to the output disk (01-06); the torque motor stator housing (01-16) is fixedly connected to the housing of the movable tooth reducer (01-01), and the torque motor stator housing (01-16) is fixedly connected to the stator of the inner rotor torque motor (01-02).

2. The AC cradle turntable using a movable tooth reducer and a torque motor as claimed in claim 1, characterized in that: The rotor of the inner rotor torque motor (01-02) is mounted on the input shaft (01-03) through a fifth screw (01-04), and the input shaft (01-03) is fixedly mounted on the input end of the movable tooth reducer (01-01) through a sixth screw (01-05); the output disk (01-06) is fixedly mounted on the output end of the movable tooth reducer (01-01) through a seventh screw (01-07), and the hollow shaft (01-08) is fixedly mounted on the output disk (01-06) through an eighth screw (01-09); the torque motor stator housing (01-16) is mounted on the housing of the movable tooth reducer (01-01) through an eleventh screw (01-17), and is fixedly connected to the stator of the inner rotor torque motor (01-02) through a twelfth screw (01-18).

3. The AC cradle turntable using a movable tooth reducer and a torque motor as claimed in claim 2, characterized in that: The A-axis direct drive module (01) also includes an output end encoder (01-10), the output end encoder (01-10) is installed on the encoder seat (01-12) through a ninth screw (01-11), and the encoder seat (01-12) is fixedly installed on the hollow shaft (01-08) through a locking nut (01-13).

4. The AC cradle turntable using a movable tooth reducer and a torque motor as claimed in claim 2, characterized in that: The A-axis direct drive module (01) also includes a brake sleeve (01-14), and the brake sleeve (01-14) is fixedly mounted on the housing of the movable tooth reducer (01-01) via a tenth screw (01-15).

5. The AC cradle turntable using a movable tooth reducer and a torque motor as claimed in claim 2, characterized in that: A cooling liquid circuit is arranged inside the torque motor stator housing (01-16), and a pipe joint (01-19) is provided on the torque motor stator housing (01-16), and the pipe joint (01-19) is connected to the cooling liquid circuit.

6. The AC cradle turntable using a movable tooth reducer and a torque motor as claimed in claim 2, characterized in that: The A-axis turntable further comprises a box (03), and the A-axis direct drive module (01) is fixedly installed in the box (03) by means of a first screw (02); the C-axis turntable further comprises a cradle box (05), and the C-axis direct drive module (09) is fixedly installed on the cradle box (05) by means of a second screw (04); and the cradle box (05) is fixedly installed on the output end of the A-axis direct drive module (01) by means of a third screw (06).

7. The AC cradle turntable using a movable tooth reducer and a torque motor as claimed in claim 6, characterized in that: It also includes a support assembly (07), and the cradle box (05) is connected to the support assembly (07) through a fourth screw (08) on the side away from the A-axis turntable.

8. The AC cradle turntable using a movable tooth reducer and a torque motor as claimed in claim 7, characterized in that: The support assembly (07) comprises a support box (07-01), a bearing seat (07-02), a bearing (07-04), a pressure cover (07-05) and a support shaft (07-08); the bearing seat (07-02) is mounted on the support box (07-01) by a thirteenth screw (07-03); the bearing (07-04) is arranged in the bearing seat (07-02); the pressure cover (07-05) is fixedly connected to the bearing seat (07-02) by a fourteenth screw (07-06); the sealing ring (07-07) is installed in the inner hole of the bearing seat (07-02) and the inner hole of the pressure cover (07-05); the left disk surface of the support shaft (07-08) is fixedly connected to the cradle box (05), and the right shaft end is installed in the inner hole of the bearing.

9. The AC cradle turntable using a movable tooth reducer and a torque motor as claimed in claim 8, characterized in that: The bearing (07-04) is an angular contact ball bearing, and two bearings (07-04) are arranged in parallel.

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