Device for improving precision of output end of harmonic speed reducer

Abstract

The utility model relates to the technical field of harmonic speed reducers, and provides a device for improving the precision of an output end of a harmonic speed reducer, which comprises a driving end, and a mounting jig and a polisher which are used for fixing a harmonic speed reducer body, the driving end is connected with the mounting jig, the shaft end of the driving end is connected with the harmonic speed reducer body to drive the harmonic speed reducer body, the polisher is arranged on the side of the mounting jig, and the output end of the harmonic speed reducer body is polished through the polisher. According to the utility model, the problem of poor precision of outer circle run-out and end face run-out of the output end after the harmonic speed reducer is assembled is solved, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of harmonic reducers, and in particular to a device for improving the accuracy of an output end of a harmonic reducer. Background Art

[0002] A harmonic reducer is a high-precision, low-noise mechanical transmission device. Its operating principle is to transmit motion and power through the controlled elastic deformation of flexible elements (such as flexible gears or flexible frames). Specifically, it achieves high-precision reduction from input shaft speed to output shaft speed through the elastic deformation of the flexible gears meshing with the rigid gears, while also enabling reverse transmission.

[0003] The assembly process of a harmonic reducer involves several key steps and precautions to ensure its assembly accuracy, normal operation, and service life. By fixing the fixed end (large end cap) of the harmonic reducer, rotating the input end (wave generator), and inspecting the output end (small end cap), it is difficult to achieve an outer diameter and end face runout below 0.01 mm. Even with corrections during the assembly process, it is difficult to meet these dimensional requirements, and the form and position tolerances after assembly are large. Therefore, a device that can improve the accuracy of the harmonic reducer output end is designed to address the problems existing in the background art. Utility Model Content

[0004] The purpose of the utility model is to provide a device for improving the accuracy of the output end of a harmonic reducer, solve the problem of poor accuracy of the output end outer circle runout and end face runout, and reduce the difficulty of assembly.

[0005] The utility model is achieved through the following technical solutions: a device for improving the accuracy of the output end of a harmonic reducer, comprising a driving end, and a mounting fixture and a grinder for fixing a harmonic reducer body; the driving end is connected to the mounting fixture, and the shaft end of the driving end is connected to the harmonic reducer body for driving, the grinder is arranged beside the mounting fixture, and the output end of the harmonic reducer body is polished by the grinder.

[0006] Furthermore, a coupling and a drive shaft are sequentially connected between the driving end and the harmonic reducer body; and the coupling and the drive shaft are covered with a casing.

[0007] Furthermore, the housing is detachably connected to one end face of the mounting fixture via a thread.

[0008] Furthermore, it also includes a guide rail, and the installation fixture is arranged on the guide rail.

[0009] Furthermore, at least one socket is provided on the guide rail, and a fastening screw is provided between the mounting fixture and the socket.

[0010] Furthermore, the grinder is a disc-shaped structure, and the grinder is arranged vertically.

[0011] Furthermore, the grinder is a grinding wheel.

[0012] Furthermore, the driving end adopts a servo motor.

[0013] The technical solution of the present invention has at least the following advantages and beneficial effects: the present invention solves the problems of outer circle runout and poor end face accuracy of the output end by assembling the harmonic reducer, reserving a processing allowance for the small end cover at its output end, and grinding the output end with a grinding wheel, thereby improving operating efficiency and reducing assembly difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic structural diagram of a device for improving the output accuracy of a harmonic reducer provided in an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the harmonic reducer body in the utility model;

[0017] Figure 3 This is a front structural diagram of the installation fixture in the present invention.

[0018] Icons: 1-driving end, 2-grinding machine, 3-mounting fixture, 4-harmonic reducer body, 41-wave generator, 42-fixed end, 43-output end, 5-coupling, 6-driving shaft, 7-housing, 8-guide rail, 81-socket, 9-fastening screw. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0022] The following is further described in conjunction with specific embodiments. Figure 1-Figure 3 As shown, this embodiment is a device for improving the accuracy of the output end 43 of the harmonic reducer, including a driving end 1, and a mounting fixture 3 and a grinder 2 for fixing the harmonic reducer body 4; the driving end 1 is connected to the mounting fixture 3, and the shaft end of the driving end 1 is connected to the harmonic reducer body 4 and driven, and the grinder 2 is arranged next to the mounting fixture 3, and the output end 43 of the harmonic reducer body 4 is polished by the grinder 2; specifically, the assembled harmonic reducer body 4 is installed on the mounting fixture 3, and the driving end 1 adopts a servo motor, which drives the wave generator 41 of the harmonic reducer body 4, drives the output end 43 of the small end cover to rotate circumferentially, and uses the grinder 2 to grind the end face and outer circle of the small end cover of the output end 43 to meet the accuracy requirements and stop. Compared with the assembly method of the transmission, the assembly is all done through the method of fitting the stoppers. There is a large gap between the stoppers, and the end face outer circle runout is difficult to reach 0.01. It is also difficult to achieve through correction during the assembly process, and the correction time is long. On this basis, the output end 43 is directly polished, thereby improving its accuracy and efficiency.

[0023] It is worth noting that a margin of about 0.05 mm is reserved when fine-machining the outer circle and end face of the small end cover of the output end 43 .

[0024] Assembly process of harmonic reducer body 4:

[0025] Assembly of the wave generator 41100: Press the flexible bearing and deep groove ball bearing onto the wave generator 41;

[0026] Flexspline installation: Install the flexspline into the stopper of the large end cover, then install the cross bearing and tighten the screws;

[0027] Installation of the rigid wheel: Assemble the wave generator 41 on the flexible wheel, and then install the rigid wheel on the flexible wheel;

[0028] Output end 43 (small end cover) installation: Install the small end cover on the end face of the pulley by fitting the stopper;

[0029] In an adaptive manner, the wave generator 41 is rotated to bring the teeth of the flexspline and the rigid spline into optimal meshing state, at which time the screw is tightened;

[0030] It is installed on the jig used for grinding, and the wave generator 41 is driven to rotate by the servo motor, and its output end 43 (small end cover) is used to rotate to grind the small end cover.

[0031] Reference Figure 1 As shown, in this embodiment, a coupling 5 and a drive shaft 6 are connected in sequence between the overall driving end 1 and the harmonic reducer body 4; and the coupling 5 and the drive shaft 6 are covered with a shell 7; specifically, the servo motor sets a corresponding speed, and transmits power to the wave generator 41 of the harmonic reducer body 4 through the coupling 5 and the drive shaft 6 for rotation, and the coupling 5 also has an axial correction function, which reduces the axial stiffness requirements of the harmonic reducer and reduces the end face runout of the harmonic reducer.

[0032] In order to facilitate disassembly and maintenance, the housing 7 is connected to the end surface of one side of the mounting fixture 3 in a threaded detachable connection.

[0033] This embodiment further includes a guide rail 8 , on which the mounting fixture 3 is disposed. After the entire assembly is assembled, the grinder 2 is positioned.

[0034] In this embodiment, at least one insertion hole 81 is provided on the guide rail 8 , and a fastening screw 9 is provided between the mounting fixture 3 and the insertion hole 81 . At least two fastening screws 9 are provided to fix the mounting fixture 3 and the harmonic reducer body 4 .

[0035] As shown in the figure, the grinder 2 is a disc-shaped structure, and the grinder 2 is arranged vertically, such as a grinding wheel, and it rotates to grind the outer circle and end face of the contact output end 43. After the processing is completed, the end face runout is checked on the grinding equipment to see if it meets the requirements.

[0036] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for improving the accuracy of a harmonic reducer output end (43), characterized in that: It comprises a driving end (1), and a mounting fixture (3) and a grinder (2) for fixing a harmonic reducer body (4); The driving end (1) is connected to the mounting fixture (3), and the shaft end of the driving end (1) is connected to and driven by the harmonic reducer body (4); the grinder (2) is arranged beside the mounting fixture (3), and the output end (43) of the harmonic reducer body (4) is grinded by the grinder (2).

2. The device for improving the accuracy of the output end (43) of a harmonic reducer according to claim 1, characterized in that: A coupling (5) and a drive shaft (6) are sequentially connected between the driving end (1) and the harmonic reducer body (4); The coupling (5) and the driving shaft (6) are covered with a casing (7) on the outside.

3. The device for improving the accuracy of the output end (43) of a harmonic reducer according to claim 2, characterized in that: The housing (7) is detachably connected to one end face of the mounting fixture (3) via a thread.

4. The device for improving the accuracy of the output end (43) of a harmonic reducer according to claim 1, characterized in that: It also includes a guide rail (8), and the mounting fixture (3) is arranged on the guide rail (8).

5. The device for improving the accuracy of the output end (43) of a harmonic reducer according to claim 4, characterized in that: At least one insertion hole (81) is provided on the guide rail (8), and a fastening screw (9) is provided between the mounting fixture (3) and the insertion hole (81).

6. The device for improving the accuracy of the output end (43) of a harmonic reducer according to claim 1, characterized in that: The grinder (2) is a disc-shaped structure, and the grinder (2) is arranged vertically.

7. The device for improving the accuracy of the output end (43) of a harmonic reducer according to claim 6, characterized in that: The grinder (2) adopts a grinding wheel.

8. The device for improving the accuracy of the output end (43) of a harmonic reducer according to claim 1, characterized in that: The driving end (1) adopts a servo motor.

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