A dual shaft combination structure

Abstract

The utility model discloses a double shaft combination structure, including hollow shaft subassembly and inner shaft power output motor, hollow shaft subassembly includes hollow shaft bearing seat, and the hollow shaft bearing seat is rotated and is sleeved with hollow shaft in, and the hollow shaft is personally experienced sth, such as hollow shaft hole that penetrates along the axial direction is established in, and the both ends of hollow shaft are worn to the outside of hollow shaft bearing seat along the axial direction, and the output end of hollow shaft is installed with outer grinding wheel, and the input end of hollow shaft is installed with driven part, inner shaft power output motor includes inner shaft, and the inner shaft bearing seat of sleeve setting is in the periphery of inner shaft, hollow shaft sleeve sets up in the outer of inner shaft bearing seat, and the inner wall of hollow shaft does not contact with the outer wall of inner shaft bearing seat, and the output end of inner shaft is worn to the outside of inner shaft bearing seat and hollow shaft along the axial direction, the utility model has two output shafts and two grinding wheels, and two grinding wheels can synchronous or independent processing, and two shafts all support through bearing and bearing seat, can improve the machining precision of grinding wheel to workpiece.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a dual-shaft combined structure. Background Technology

[0002] An electric motor, also known as a motor, is an electromagnetic device that converts electrical energy into mechanical energy based on the law of electromagnetic induction. It is an indispensable key piece of equipment in modern industry and daily life, widely used in various mechanical equipment and systems to provide power or perform specific mechanical actions. The machine spindle is the core component on a machine tool that drives the workpiece or cutting tool to rotate; it mainly consists of the spindle, bearings, and transmission components (such as gears and pulleys).

[0003] Existing motors have only one power output shaft, which can only mount one grinding tool for processing workpieces such as glass and sheet metal. To complete multiple processing steps on a workpiece simultaneously, existing machining machines require multiple motors (10 or more) mounted side-by-side on one side of the machine body. Each motor completes one process, ultimately finishing all processes. Therefore, using existing motors results in a longer machine body, and the distance the workpiece travels from the grinding wheel of the first motor to the grinding wheel of the last motor is significant, impacting grinding efficiency. Furthermore, the excessively long transition distance between the grinding wheels of adjacent motors, with their large grit size variations, also affects the grinding quality. Utility Model Content

[0004] In order to overcome at least one of the technical problems existing in the prior art, this utility model provides a dual-shaft combination structure with two output shafts and two grinding wheels. The two grinding wheels can process synchronously or independently and occupy less space. Both shafts are supported by bearings and bearing seats, which can reduce vibration and eccentricity and improve the processing accuracy of the grinding wheels on the workpiece.

[0005] A dual-shaft assembly includes a hollow shaft assembly and an inner shaft power output motor. The hollow shaft assembly includes a hollow shaft bearing housing, within which a hollow shaft is rotatably sleeved. The hollow shaft has an axially penetrating hollow shaft hole, and both ends of the hollow shaft extend axially out of the hollow shaft bearing housing. An external grinding wheel is installed at the output end of the hollow shaft, and a driven component is installed at the input end. The inner shaft power output motor includes an inner shaft and an inner shaft bearing housing sleeved around the inner shaft. The hollow shaft is sleeved outside the inner shaft bearing housing, and the inner wall of the hollow shaft does not contact the outer wall of the inner shaft bearing housing. The output of the inner shaft... The inner shaft extends axially to the inner shaft bearing housing and the outer shaft. An inner grinding wheel is installed at the output end of the inner shaft. The inner grinding wheel does not contact the outer grinding wheel. The inner shaft power output motor drives the inner shaft and the inner grinding wheel to rotate synchronously along the axial direction. It also includes an outer wheel power assembly base. One end of the hollow shaft bearing housing is fixed inside the outer wheel power assembly base. The housing of the inner shaft power output motor and the hollow shaft bearing housing are arranged side by side along the axial direction. The hollow shaft power output motor is installed on the outer wheel power assembly base. The output shaft of the hollow shaft power output motor is equipped with an active component. The hollow shaft power output motor drives the hollow shaft and the outer grinding wheel to rotate radially.

[0006] In some embodiments, a hollow shaft bearing is sleeved between the hollow shaft and the hollow shaft bearing housing, and an inner shaft bearing is sleeved between the inner shaft and the inner shaft bearing housing.

[0007] In some embodiments, a sliding plate is installed at the bottom of the outer wheel power assembly base and the inner shaft power output motor. The two sliding plates are slidably mounted side by side on the upper end of a sliding plate base and can move forward or backward independently, thereby driving the outer grinding wheel and the inner grinding wheel to move forward or backward synchronously.

[0008] In some embodiments, the outer wheel power unit base includes a base body, the top of which is provided with a vertical plate for fixing a hollow shaft power output motor, the vertical plate having a vertical plate hole for the output shaft of the hollow shaft power output motor to pass through; the base body having a shaft hole for fixing one end of the hollow shaft bearing seat and for the inner shaft and inner shaft bearing seat to pass through; the side wall of the base body having a side hole communicating with the shaft hole.

[0009] In some embodiments, the driving component and the driven component are multi-wedge pulleys, with a multi-wedge belt installed between them.

[0010] In some embodiments, the driving and driven components are sprockets, with a chain installed between them.

[0011] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0012] 1. This dual-shaft combination structure is equipped with two output shafts, which can be fitted with two grinding wheels. The two grinding wheels can use independent power, can independently rotate, can independently control the speed, and can independently move forward and backward, thereby achieving precise monitoring and control;

[0013] 2. This dual-shaft combination structure is equivalent to two grinding head motors, reducing the space occupied by about 50% and the space occupied by the grinding wheels. This reduces the length of the machine body, shortens the travel distance of the workpiece on the conveyor belt, and improves the grinding efficiency.

[0014] 3. Both the hollow shaft and the inner shaft of this dual-shaft combination structure are supported by bearings and bearing housings, which can reduce vibration and eccentricity, thereby improving the machining accuracy of the outer and inner grinding wheels on the workpiece.

[0015] 3. The distance between the two grinding wheels in this dual-shaft combination structure is very small, which can improve the grinding quality.

[0016] Additional aspects and advantages of this invention will continue to be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of this invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a frontal stereoscopic structural diagram of this application;

[0019] Figure 2 This is a rear-view stereoscopic structural diagram of this application;

[0020] Figure 3 This is a schematic diagram of the connection structure of the hollow shaft power output motor, the hollow shaft assembly, and the inner shaft power output motor.

[0021] Figure 4 This is a partial cross-sectional structural diagram of the hollow shaft assembly and the inner shaft power output motor;

[0022] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 This is a cross-sectional structural diagram of the hollow shaft assembly;

[0024] Figure 7 This is a three-dimensional structural diagram of the outer wheel power unit.

[0025] Figure label:

[0026] Hollow shaft assembly 1;

[0027] Hollow shaft bearing housing 100, hollow shaft 101, hollow shaft hole 102, outer grinding wheel 103, driven component 104, hollow shaft bearing 105;

[0028] Inner shaft power output motor 2;

[0029] Inner shaft 200, inner shaft bearing seat 201, inner shaft bearing 202, inner grinding wheel 203;

[0030] External wheel power unit seat 3;

[0031] 300 base, 301 upright plate, 302 upright plate hole, 303 shaft hole, 304 side hole;

[0032] Hollow shaft power output motor 4, active component 400, multi-belt 401;

[0033] 5. Sliding plate; 6. Sliding plate base. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Reference Figures 1-7 A dual-shaft assembly structure includes a hollow shaft assembly 1 and an inner shaft power output motor 2. The hollow shaft assembly 1 includes a hollow shaft bearing housing 100, in which a hollow shaft 101 is rotatably sleeved. Multiple hollow shaft bearings 105 are sleeved between the two to provide better support and maintain the stable rotation of the hollow shaft 101. A hollow shaft hole 102 is opened in the hollow shaft and extends axially to the outside of the hollow shaft bearing housing 100 at both ends. An outer grinding wheel 103 is installed at the output end of the hollow shaft 101, and a driven component 104 is installed at the input end of the hollow shaft 101.

[0039] The inner shaft power output motor 2 includes an inner shaft 200 and an inner shaft bearing seat 201 sleeved around the inner shaft 200. This inner shaft bearing seat 201 can serve as the front cover of the inner shaft power output motor 2, and can be extended along the shaft, which is simple and convenient. Multiple inner shaft bearings 202 are sleeved between the inner shaft 200 and the inner shaft bearing seat 201, providing better support and maintaining stable rotation of the inner shaft 200. When the hollow shaft 101 and the inner shaft 200 are working, their rotational speed is 2800 rpm or higher. This structural design reduces vibration and eccentricity, thereby improving the machining accuracy of the outer grinding wheel 103 and the inner grinding wheel on the workpiece. The hollow shaft 101... The inner wall of the hollow shaft 101, which is fitted outside the inner shaft bearing seat 201, does not contact the outer wall of the inner shaft bearing seat 201, forming an annular gap between them. This facilitates airflow, allowing internal heat to be quickly dissipated to the outside, thus improving heat dissipation performance. The output end of the inner shaft 200 extends axially to the outer wall of the inner shaft bearing seat 201 and the hollow shaft 101. An inner grinding wheel 203, with a diameter smaller than that of the outer grinding wheel 103, is installed at the output end of the inner shaft 200. The inner grinding wheel 203 does not contact the outer grinding wheel 103, and they are preferably concentrically arranged. The inner shaft power output motor 2 drives the inner shaft 200 and the inner grinding wheel 203 to rotate synchronously along the axial direction.

[0040] It also includes an outer wheel power assembly 3, one end of the hollow shaft bearing housing 100 is sleeved and fixed inside the outer wheel power assembly 3, the housing of the inner shaft power output motor 2 is arranged axially alongside the hollow shaft bearing housing 100 to avoid occupying too much of the machine body length; the hollow shaft power output motor 4 is installed on the outer wheel power assembly 3, preferably fixed on the top of the outer wheel power assembly 3, which can reduce the overall volume of the machine and reduce the length of the processing machinery body occupied, thereby shortening the machine body length; the output shaft of the hollow shaft power output motor 4 is equipped with an active component 400, and the hollow shaft power output motor 4 drives the hollow shaft 101 and the outer grinding wheel 103 to rotate radially.

[0041] The output end of the inner shaft 200 extends axially to the inner shaft bearing seat 201 and the hollow shaft 101. A grinding wheel can be installed at the output ends of both the inner shaft 200 and the hollow shaft 101. The hollow shaft power output motor 4 drives the hollow shaft 101 and the outer grinding wheel 103 to rotate radially, while the inner shaft power output motor 2 drives the inner shaft 200 and the inner grinding wheel 203 to rotate synchronously axially. The outer grinding wheel 103 and the inner grinding wheel 203 can rotate simultaneously to process workpieces passing over their surfaces, or they can rotate sequentially to process workpieces, thus achieving power independence and rotational stability of the inner shaft 200 and the hollow shaft 101. The dual-axis combination structure offers independence in both rotational speed and bearing capacity. It is equivalent to two grinding head motors, reducing the space occupied by approximately 50%. This allows for a shorter machine body length and a shorter workpiece travel distance on the conveyor belt, thus improving grinding efficiency. The distance between the outer grinding wheel 103 and the inner grinding wheel 203 is very small, only requiring minimal obstruction of their independent rotation. Furthermore, the outer grinding wheel 103 and the inner grinding wheel 203 can be located on the same plane, processing the passing workpieces sequentially. The small distance between the two grinding wheels in this dual-axis combination structure further enhances the grinding quality.

[0042] In some embodiments, a sliding plate 5 is installed at the bottom of both the outer wheel power assembly 3 and the inner shaft power output motor 2. The two sliding plates 5 are slidably mounted side by side on the upper end of a sliding plate seat 6. The two sliding plates 5 can move forward or backward independently, thereby driving the outer grinding wheel 103 and the inner grinding wheel 203 to move forward or backward synchronously. The two sliding plates 5 can be controlled to move forward or backward by two independent drive components, thereby independently controlling the independent feed of the inner shaft 200 and the hollow shaft 101, realizing the independence of their forward and backward movement. The drive components may include the following structure: a servo motor fixed on one side of the sliding plate seat 6, a lead screw connected to the output shaft of the servo motor, and a nut seat threaded onto the lead screw, which is in turn connected to the sliding plate 5. The servo motor drives the lead screw to rotate, and when the lead screw rotates, it drives the nut seat and the sliding plate 5 to move forward or backward linearly.

[0043] In some embodiments, the outer wheel power unit base 3 includes a base body 300, the top of which is provided with a vertical plate 301 for fixing the hollow shaft power output motor 4, thereby improving the compactness of the whole machine and reducing the space occupied; the vertical plate 301 is provided with a vertical plate hole 302 for the output shaft of the hollow shaft power output motor 4 to pass through; a shaft hole 303 is provided in the middle of the base body 300 for fitting and fixing one end of the hollow shaft bearing seat 100, and for the inner shaft 200 and the inner shaft bearing seat 201 to pass through; two or more side holes 304 are symmetrically provided on the side wall of the base body 300, which communicate with the shaft hole 303 to facilitate air flow and improve heat dissipation performance.

[0044] In some embodiments, the driving component 400 and the driven component 104 are multi-pulleys, with a multi-pulley belt 401 installed between them. A multi-pulley is a pulley transmission element, a core component of a mechanical transmission system, mainly used to cooperate with a multi-pulley belt to transmit power. Its structural feature is that the rim surface is machined with multiple parallel annular grooves, which transmit power through meshing with the teeth or friction surfaces of the multi-pulley belt.

[0045] In some embodiments, the driving component 400 and the driven component 104 are sprockets, with a chain installed between them; power is transmitted through chain engagement, providing strong load-bearing capacity and suitability for harsh environments. The driving component 400 and the driven component 104 can also be synchronous pulleys or other components that can achieve the same function.

[0046] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dual-shaft assembly structure, comprising a hollow shaft assembly and an inner shaft power output motor, characterized in that: The hollow shaft assembly includes a hollow shaft bearing housing, within which a hollow shaft is rotatably sleeved. The hollow shaft has an axially penetrating hole. Both ends of the hollow shaft extend axially out of the hollow shaft bearing housing. An external grinding wheel is mounted at the output end of the hollow shaft, and a driven component is mounted at the input end. The inner shaft power output motor includes an inner shaft and an inner shaft bearing housing sleeved around the inner shaft. The hollow shaft is sleeved outside the inner shaft bearing housing, and the inner wall of the hollow shaft does not contact the outer wall of the inner shaft bearing housing. The output end of the inner shaft extends axially out of the inner shaft bearing housing and... The hollow shaft has an inner grinding wheel installed at the output end of the inner shaft. The inner grinding wheel does not contact the outer grinding wheel. The inner shaft power output motor drives the inner shaft and the inner grinding wheel to rotate synchronously along the axial direction. It also includes an outer wheel power assembly seat. One end of the hollow shaft bearing seat is fixed in the outer wheel power assembly seat. The housing of the inner shaft power output motor and the hollow shaft bearing seat are arranged side by side along the axial direction. The hollow shaft power output motor is installed on the outer wheel power assembly seat. The output shaft of the hollow shaft power output motor is equipped with an active component. The hollow shaft power output motor drives the hollow shaft and the outer grinding wheel to rotate radially.

2. The biaxial composite structure as described in claim 1, characterized in that: A hollow shaft bearing is fitted between the hollow shaft and the hollow shaft bearing housing, and an inner shaft bearing is fitted between the inner shaft and the inner shaft bearing housing.

3. The biaxial composite structure as described in claim 2, characterized in that: A sliding plate is installed at the bottom of the outer wheel power assembly base and the inner shaft power output motor. The two sliding plates are slidably mounted side by side on the upper end of a sliding plate base, and can move forward or backward independently, thereby driving the outer grinding wheel and the inner grinding wheel to move forward or backward synchronously.

4. The biaxial composite structure as described in claim 3, characterized in that: The outer wheel power unit base includes a base body, with a vertical plate on the top of the base body for fixing the hollow shaft power output motor. The vertical plate has a vertical plate hole for the output shaft of the hollow shaft power output motor to pass through. The base body has a shaft hole for fixing one end of the hollow shaft bearing seat and for the inner shaft and inner shaft bearing seat to pass through. The side wall of the base body has a side hole that communicates with the shaft hole.

5. The biaxial composite structure as described in claim 4, characterized in that: The driving and driven components are multi-pulleys, and a multi-pulley belt is installed between them.

6. The biaxial composite structure as described in claim 4, characterized in that: The driving and driven components are sprockets, with a chain installed between them.

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