Elastic coupling assembly tool

Abstract

The utility model relates to an elastic coupling assembling tool which comprises a base, a positioning shaft, a pressing block and a pressing driving device, and the positioning shaft is fixed at one end of the base and can conduct center positioning on the driving end and the driven end of an elastic coupling. The pressing block is installed on the pressing driving device, the pressing driving device is installed on the base, and the pressing block can move under the action of the pressing driving device and can push the driven end of the elastic coupling to move in the axial direction of the positioning shaft. The coaxiality of the driving end and the driven end of the elastic coupling can be guaranteed through one-time assembly, centering operation is not needed, the structure is simple, operation is convenient, the assembly precision is good, and the assembly efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical assembly, and particularly relates to an elastic coupling assembly tool. Background Art

[0002] The elastic coupling can not only absorb the slight deviation and vibration between the driving and driven parts, reduce the impact and loss during transmission, but also effectively reduce the noise and vibration during transmission, ensure the normal operation of mechanical equipment, and adapt to different working conditions and transmission needs. It has strong versatility and adaptability. The elastic coupling usually consists of three parts: the driving end sleeve, the driven end sleeve and the middle elastic body. During assembly, it is necessary to ensure that the driving end sleeve and the driven end sleeve remain coaxial, otherwise it will affect the stability of the power transmission between the driving shaft and the driven shaft, generate vibration, and in severe cases, cause oil film oscillation in the machine, reducing the service life of the bearing.

[0003] The existing coupling assembly scheme is to first assemble the coupling's active end sleeve and the elastomer into place, then align the plum blossom-shaped teeth of the driven end sleeve with the tooth gap of the elastomer, and press them in with a hammer to make the active and driven sleeves fit in place. In order to ensure that the active end sleeve and the driven end sleeve are coaxial, a coupling centering operation is also required. Specifically, the assembled coupling is assembled to the motor shaft end, and two dial indicators are used, with the pointers pointing to the end face and cylindrical surface of the driven end sleeve respectively. Rotate the coupling, and adjust the deviation value of the axis centerline and the inclination value of the driven end sleeve according to the deviation of the two dial indicators until the coaxiality of the two sleeves meets the assembly requirements. This method has high technical requirements for people. When the plum blossom-shaped teeth of the driven end are pressed into the tooth gap of the elastomer, it is difficult to ensure the coaxiality of the axes of the active end sleeve and the driven end sleeve, which may cause the driven end sleeve to tilt, resulting in the need to center the coupling later, and low assembly efficiency. In addition, manual operation has large fluctuations, which may cause the driving end sleeve and the driven end sleeve to not fit in place, affecting the assembly quality. Summary of the invention

[0004] The utility model aims to overcome the deficiencies of the prior art and to provide an elastic coupling assembly tool with simple structure, convenient operation, high assembly precision and high assembly efficiency.

[0005] In order to solve the above technical problems, the utility model is implemented through the following technical solutions: an elastic coupling assembly tool, including a base, a positioning shaft, a pressure block and a clamping drive device, the positioning shaft is fixed to one end of the base, and can perform center positioning on the active end and the driven end of the elastic coupling; the pressure block is installed on the clamping drive device, and the clamping drive device is installed on the base. The pressure block can move under the action of the clamping drive device and can push the driven end of the elastic coupling to move along the axial direction of the positioning shaft.

[0006] In the above-mentioned elastic coupling assembly tooling, the positioning shaft is a stepped structure, including an end face positioning part, an active positioning part and a driven positioning part, the diameters of the end face positioning part, the active positioning part and the driven positioning part are arranged in sequence from large to small, and the diameter of the active positioning part is the same as the inner diameter of the sleeve at the active end of the elastic coupling, and the diameter of the driven positioning part is the same as the inner diameter of the sleeve at the driven end of the elastic coupling; the end face positioning part can be positioned and matched with the end face of the sleeve at the active end of the elastic coupling.

[0007] The above-mentioned elastic coupling assembly tooling, the clamping drive device includes a screw and a servo motor, the screw is arranged parallel to the positioning shaft, supported on the base by two sets of front and rear bearings, and the pressure block is installed on the screw; the servo motor is installed on the base, the screw is connected to the servo motor, and can rotate under the action of the servo motor and drive the pressure block to move linearly.

[0008] In the above-mentioned elastic coupling assembly tool, a motor load monitoring device is also provided on the servo motor.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts a stepped positioning shaft to ensure the coaxiality of the active end and the driven end of the elastic coupling in one assembly, without the need for centering operation, with a simple structure, convenient operation, and high assembly efficiency. At the same time, the servo motor is used to control the feeding movement of the pressure block to press the driven end of the coupling into the tooth gap of the elastic sleeve and fit it in place. The assembly can be completed by simply controlling the feeding distance of the pressure block, thus achieving assembly standardization. And the monitoring of the servo motor load rate using the motor load monitoring device can reflect the assembly quality of the coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0011] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0012] In the description of the embodiments of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0013] like Figure 1As shown, an elastic coupling assembly tool provided by an embodiment of the utility model includes a base 1, a positioning shaft 2, a pressure block 3, a lead screw 4 and a servo motor 5. The positioning shaft 2 and the pressure block 3 are distributed left and right, the positioning shaft 2 is fixed on the base 1, and the pressure block 3 is installed on the lead screw 4. The lead screw 4 is arranged parallel to the positioning shaft 2 and supported on the base 1 through two sets of bearings. The servo motor 5 is installed on the base 1, and the lead screw 4 is connected to the output end of the servo motor 5, and can rotate under the action of the servo motor 5, thereby driving the pressure block 3 to move along the axial direction of the positioning shaft 2.

[0014] The positioning shaft 2 is a stepped structure, and the diameters from large to small are the end face positioning part 21, the active positioning part 22 and the driven positioning part 23. The end face positioning part 21 is mainly used to perform end face positioning on the sleeve of the active end of the elastic coupling. The diameter of the active positioning part 22 is the same as the inner diameter of the sleeve of the active end of the elastic coupling, and is mainly used to perform center positioning on the sleeve of the active end of the elastic coupling. The diameter of the driven positioning part 23 is the same as the inner diameter of the sleeve of the driven end of the elastic coupling, and is mainly used to perform center positioning on the sleeve of the driven end of the elastic coupling.

[0015] When this embodiment is used, first, the shaft sleeve of the active end with a larger inner diameter of the elastic coupling is mounted on the positioning shaft 2, so that its inner diameter is coaxially matched with the active positioning part 22, and the left end face is matched with the end face positioning part 21; then, after the elastomer is inserted into the shaft sleeve of the active end, the shaft sleeve of the driven end is installed on the positioning shaft 2, so that its inner diameter is coaxially matched with the driven positioning part 23, and its plum blossom-shaped teeth are aligned with the tooth gap of the elastomer; then, the servo motor 5 is controlled to drive the screw 4 to rotate, so that the pressure block 3 moves toward the positioning shaft 2, and when it contacts the shaft sleeve of the driven end, it pushes the shaft sleeve of the driven end to move toward the active end, so that it is pressed into the tooth gap of the elastomer and fits into place, thereby completing the assembly of the elastic coupling.

[0016] In this embodiment, in order to prevent the pressing block 3 from colliding with the positioning shaft 2, an anti-collision hole 31 is also provided on the pressing block 3. At the same time, in order to monitor the assembly quality of the elastic coupling, a motor load monitoring device (not shown in the figure) is provided on the servo motor 5. The change in the load rate of the servo motor 5 can be used to determine whether the assembly of the elastic coupling is smooth and whether there is any deviation. When the sleeve of the driven end of the elastic coupling is not pushed in smoothly, the resistance of the servo motor 5 increases and the load rate rises sharply. When the load rate exceeds the set value, the servo motor 5 stops driving and prompts that the assembly is unqualified; if the pushing process is smooth, the load rate curve shows a steady change trend and will not exceed the set value. After the push is in place, it prompts that the assembly is completed.

[0017] Although the utility model is described in detail above, the utility model is not limited thereto, and those skilled in the art can make various modifications according to the principle of the utility model. Therefore, all modifications made according to the principle of the utility model should be understood to fall within the protection scope of the utility model.

Claims

1. An elastic coupling assembly tool, characterized in that: It includes a base, a positioning shaft, a pressure block and a clamping drive device. The positioning shaft is fixed to one end of the base and can perform center positioning on the active end and the driven end of the elastic coupling. The pressure block is installed on the clamping drive device, and the clamping drive device is installed on the base. The pressure block can move under the action of the clamping drive device and can push the driven end of the elastic coupling to move along the axial direction of the positioning shaft.

2. The elastic coupling assembly tool according to claim 1, characterized in that: The positioning shaft is a stepped structure, including an end face positioning part, an active positioning part and a driven positioning part. The diameters of the end face positioning part, the active positioning part and the driven positioning part are arranged in sequence from large to small, and the diameter of the active positioning part is the same as the inner diameter of the sleeve at the active end of the elastic coupling, and the diameter of the driven positioning part is the same as the inner diameter of the sleeve at the driven end of the elastic coupling; the end face positioning part can be positioned and matched with the end face of the sleeve at the active end of the elastic coupling.

3. An elastic coupling assembly tool according to claim 1 or 2, characterized in that: The clamping drive device includes a screw and a servo motor. The screw is arranged parallel to the positioning shaft and is supported on the base through two sets of front and rear bearings. The pressure block is installed on the screw. The servo motor is installed on the base. The screw is connected to the servo motor and can rotate under the action of the servo motor and drive the pressure block to move linearly.

4. The elastic coupling assembly tool according to claim 3, characterized in that: The servo motor is also provided with a motor load monitoring device.

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