High-precision transmission device

Abstract

The utility model provides a high-precision transmission device, and belongs to the technical field of machinery. The transmission device solves the problems that gaps inevitably exist between a bearing of a traditional transmission device and a cam groove and between the bearing of the traditional transmission device and a linear groove to guarantee high-speed movement and avoid jamming, and due to the existence of the gaps, the transmission device is not high in precision and cannot meet the high-precision working requirement, and use is affected. The high-precision transmission device comprises a transmission main body and a base for fixing the transmission main body, a support connected with the base is arranged on the transmission main body, a fixing plate is arranged on the transmission main body, a servo motor used for providing power is installed on one side of the fixing plate, an installation groove is formed in the other side of the fixing plate, and a moving unit is installed in the installation groove. A motor shaft of the servo motor is sleeved with a main shaft used for being connected with the moving unit, and the fixing plate is provided with a limiting frame used for limiting the moving unit. The swing mechanism has the advantage that the swing precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field relates to a transmission device, especially in a kind of high-precision transmission device. BACKGROUND

[0002] Transmission device task is mainly between power device and working device to undertake the role of coordination work, is the mechanical energy of power device is delivered to the intermediate device of working device, is the important component part of modern mechanical equipment, its performance directly influences the operating efficiency and precision of entire mechanical system.

[0003] Bearing needs to be moved in cam groove and straight line groove in traditional transmission device, therefore, clearance between bearing and cam groove, straight line groove is necessarily to ensure high-speed movement and avoid jamming, and the existence of clearance, lead to transmission device precision is not high, cannot satisfy the work requirement of high precision, to affect use. SUMMARY

[0004] The utility model aims at the above-mentioned problem existing in prior art, provide a kind of high-precision transmission device.

[0005] The utility model discloses a kind of high-precision transmission devices, including transmission main body and the base of fixed transmission main body, located transmission main body is provided with the support connected with base, it is characterized in that, the transmission main body has fixed plate, the fixed plate one side is mounted for providing power servo motor, the fixed plate other side is equipped with installation groove, and the installation groove is mounted with moving unit, the motor shaft of the servo motor is equipped with eccentric main shaft for being connected with moving unit, the fixed plate is equipped with the limiting frame for being positioned to moving unit, and the limiting frame is hollow, the limiting frame periphery inner wall is all equipped with arc-shaped lug, the limiting frame is equipped with limiting plate, the limiting plate is equipped with the movement slot for moving unit movement, the limiting plate is equipped with the protective cover for protecting moving unit.

[0006] In the above-mentioned high-precision transmission device, the moving unit is equipped with cycloidal gear and guide rail assembly, the guide rail assembly is connected with cycloidal gear by linkage shaft, the guide rail assembly and cycloidal gear linkage cooperate, the shaft slot for eccentric main shaft installation is equipped in the center of the cycloidal gear, the cycloidal gear is equipped with several swing angles, the swing bearing is arranged on the swing angle, and the swing bearing is abutted on the inner wall of limiting frame, the linkage shaft is arranged at the center of any one swing bearing.

[0007] In the high-precision transmission device, the guide rail assembly comprises a horizontal shaft guide rail, a vertical shaft guide rail and a connecting block, the horizontal shaft guide rail is installed at the bottom of the fixed plate, the connecting block is provided with a horizontal shaft sliding rail groove and a vertical shaft sliding rail groove, and the horizontal shaft guide rail and the vertical shaft guide rail are respectively clamped in the horizontal shaft sliding rail groove and the vertical shaft sliding rail groove.

[0008] In the high-precision transmission device, a through hole is formed at the center of the limiting plate, the eccentric main shaft is fixedly installed in the through hole, and a limiting ring for limiting the eccentric main shaft is arranged in the through hole.

[0009] In the high-precision transmission device, the fixed plate, the limiting frame and the limiting plate are connected and fixed by bolts.

[0010] In the high-precision transmission device, the protective cover is provided with heat dissipation holes for heat dissipation.

[0011] In the high-precision transmission device, the vertical shaft guide rail is connected with the linkage shaft.

[0012] Compared with the prior art, the high-precision transmission device utilizes the cycloid principle to operate, a servo motor drives the eccentric main shaft to rotate eccentrically, so that the cycloid wheel can move along the cycloid profile curve in the limiting frame, the cycloid wheel can drive the linkage shaft to move along the moving groove, the cycloid bearing of the cycloid wheel is always attached to the surface of the limiting frame during the movement, and the cycloid bearing is supported at multiple points, so that the structure is stable and the carrying capacity is high. Meanwhile, the arc-shaped protrusions are arranged on the inner walls of the limiting frame, the attachment of the swing bearing and the limiting frame is increased, the gap is reduced, the swing precision and the applicability of the product are improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a schematic view of the three-dimensional structure of the high-precision transmission device.

[0014] Fig. 2 is a sectional view of the high-precision transmission device.

[0015] Fig. 3 is a schematic view of the transmission body of the high-precision transmission device.

[0016] Fig. 4 is a schematic view of the moving unit of the high-precision transmission device.

[0017] In the figure, 1, transmission main body; 2, base; 3, support; 4, fixed plate; 5, servo motor; 6, mounting groove; 7, moving unit; 8, motor shaft; 9, eccentric main shaft; 10, limiting frame; 11, arc-shaped lug; 12, limiting plate; 13, moving groove; 14, protective cover; 15, cycloid wheel; 16, linkage shaft; 17, shaft groove; 18, swing angle; 19, swing bearing; 20, horizontal shaft guide rail; 21, vertical shaft guide rail; 22, connecting block; 23, horizontal shaft sliding rail groove; 24, vertical shaft sliding rail groove; 25, through hole; 26, limiting ring; 27, bolt; 28, heat dissipation hole. DETAILED DESCRIPTION

[0018] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0019] As Figs. 1 to 4 shown, the high-precision transmission device comprises a transmission main body 1 and a base 2 for fixing the transmission main body 1, a support 3 connected with the base 2 is arranged on the transmission main body 1, the transmission main body 1 has a fixed plate 4, a servo motor 5 for providing power is mounted on one side of the fixed plate 4, the servo motor 5 reciprocates, a mounting groove 6 is formed in the other side of the fixed plate 4, and a moving unit 7 is installed in the mounting groove 6, an eccentric main shaft 9 for connecting with the moving unit 7 is sleeved on a motor shaft 8 of the servo motor 5, a limiting frame 10 for limiting the moving unit 7 is arranged on the fixed plate 4, and the limiting frame 10 is hollow, arc-shaped lugs 11 are arranged on the inner walls of the limiting frame 10, the clearance between the cycloid wheel 15 and the limiting frame 10 is reduced by increasing the arc-shaped lugs to improve the swing precision, a limiting plate 12 is arranged on the limiting frame 10, a moving groove 13 for the movement of the moving unit 7 is formed in the limiting plate 12, and a protective cover 14 for protecting the moving unit 7 is arranged on the limiting plate 12.

[0020] Further, the moving unit 7 is provided with a cycloid wheel 15 and a guide rail assembly, the guide rail assembly is connected with the cycloid wheel 15 through a linkage shaft 16, the guide rail assembly is linked and matched with the cycloid wheel 15, a shaft groove 17 for installing the eccentric main shaft 9 is formed in the center of the cycloid wheel 15, a plurality of swing angles 18 are arranged on the cycloid wheel 15, swing bearings 19 are arranged on the swing angles 18, and the swing bearings 19 abut against the inner walls of the limiting frame 10, the linkage shaft 16 is arranged at the center of any one swing bearing 19, and the linkage shaft 16 moves along with the movement of the cycloid wheel 15.

[0021] Further, the guide rail assembly comprises a horizontal shaft guide rail 20, a vertical shaft guide rail 21 and a connecting block 22, the horizontal shaft guide rail 20 is installed at the bottom of the fixed plate 4, the connecting block 22 is provided with a horizontal shaft sliding rail groove 23 and a vertical shaft sliding rail groove 24, the horizontal shaft guide rail 20 and the vertical shaft guide rail 21 are respectively clamped in the horizontal shaft sliding rail groove 23 and the vertical shaft sliding rail groove 24.

[0022] Further, a through hole 25 is formed at the center of the limiting plate 12, the eccentric shaft 9 is fixedly installed in the through hole 25, a limiting ring 26 for limiting and fixing the eccentric shaft 9 is arranged in the through hole 25, and the eccentric shaft 9 is fixed by the limiting ring 26 to prevent deviation in the shaft groove 17 during rotation.

[0023] Further, the fixed plate 4, the limiting frame 10 and the limiting plate 12 are connected and fixed by bolts 27.

[0024] Further, the protection cover 14 is provided with heat dissipation holes 28 for heat dissipation, the cycloid wheel 15 generates friction with the limiting frame 10 during reciprocating movement, heat is generated by the friction, and the heat dissipation holes 28 dissipate the heat to prevent high temperature from affecting the use of the transmission main body 1.

[0025] Further, the vertical shaft guide rail 21 is connected with the linkage shaft 16, the linkage shaft 16 moves along the moving groove 13 during rotation of the cycloid wheel 15, and the vertical shaft guide rail 21 moves along with the linkage shaft 16.

[0026] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0027] Although the terms such as transmission main body 1, base 2, support 3, fixed plate 4, servo motor 5, mounting groove 6, moving unit 7, motor shaft 8, eccentric shaft 9, limiting frame 10, arc-shaped protrusion 11, limiting plate 12, moving groove 13, protection cover 14, cycloid wheel 15, linkage shaft 16, shaft groove 17, swing angle 18, swing bearing 19, horizontal shaft guide rail 20, vertical shaft guide rail 21, connecting block 22, horizontal shaft sliding rail groove 23, vertical shaft sliding rail groove 24, through hole 25, limiting ring 26, bolt 27 and heat dissipation hole 28 are frequently used herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any kind of additional limitation by interpreting them is contrary to the spirit of the present application.

Claims

1. A high-precision transmission device comprising a transmission body (1) and a base (2) for fixing the transmission body (1), a bracket (3) being provided on the transmission body (1) and connected with the base (2), characterized in that, The transmission main body (1) has a fixed plate (4), one side of the fixed plate (4) is provided with a servo motor (5) for providing power, the other side of the fixed plate (4) is provided with a mounting groove (6), and the mounting groove (6) is provided with a moving unit (7), the motor shaft (8) of the servo motor (5) is provided with an eccentric main shaft (9) connected with the moving unit (7), the fixed plate (4) is provided with a limiting frame (10) for limiting the moving unit (7), and the limiting frame (10) is hollow, the inner wall of the limiting frame (10) is provided with an arc-shaped protrusion (11), the limiting frame (10) is provided with a limiting plate (12), the limiting plate (12) is provided with a moving groove (13) for the movement of the moving unit (7), and the limiting plate (12) is provided with a protective cover (14) for protecting the moving unit (7).

2. A high precision transmission device according to claim 1, characterized in that The moving unit (7) is provided with a cycloid wheel (15) and a guide rail assembly, the guide rail assembly is connected with the cycloid wheel (15) through a linkage shaft (16), the guide rail assembly is connected with the cycloid wheel (15), the center of the cycloid wheel (15) is provided with a shaft groove (17) for installing the eccentric main shaft (9), the cycloid wheel (15) is provided with a plurality of swing angles (18), the swing angle (18) is provided with a swing bearing (19), and the swing bearing (19) abuts against the inner wall of the limiting frame (10), and the linkage shaft (16) is arranged at the center of any one swing bearing (19).

3. A high precision transmission device according to claim 2, characterized in that The guide rail assembly comprises a horizontal shaft guide rail (20), a vertical shaft guide rail (21) and a connecting block (22), the horizontal shaft guide rail (20) is installed at the bottom of the fixed plate (4), the connecting block (22) is provided with a horizontal shaft sliding rail groove (23) and a vertical shaft sliding rail groove (24), and the horizontal shaft guide rail (20) and the vertical shaft guide rail (21) are respectively connected with the horizontal shaft sliding rail groove (23) and the vertical shaft sliding rail groove (24).

4. A high precision transmission device according to claim 1, characterized in that The limiting plate (12) is provided with a through hole (25) at the center, the eccentric main shaft (9) is fixedly installed in the through hole (25), and the through hole (25) is provided with a limiting ring (26) for limiting the eccentric main shaft (9).

5. A high precision transmission device according to claim 1, wherein The fixed plate (4), the limiting frame (10) and the limiting plate (12) are connected and fixed by bolts (27).

6. A high precision transmission device according to claim 1, characterized in that The protective cover (14) is provided with a heat dissipation hole (28) for heat dissipation.

7. A high precision transmission device according to claim 3, wherein The vertical shaft guide rail (21) is connected with the linkage shaft (16).

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