Multi-degree-of-freedom auxiliary alignment device

Abstract

The invention discloses a multi-degree-of-freedom auxiliary alignment device which is characterized in that a base provides an integral supporting effect, the base realizes X-axis movement, Y-axis movement and Z-axis rotation through universal wheels, and a movable bracket on the base realizes Z-axis movement through a vertical adjusting mechanism; a workpiece clamping seat at the end part of the movable bracket realizes Y-axis rotation through a first rotary adjusting mechanism and realizes X-axis rotation through a second rotary adjusting mechanism; during use, a workpiece is fixed through the workpiece clamping seat, the position and posture of the workpiece can be adjusted in six degrees of freedom by moving the base and operating the vertical adjusting mechanism, the first rotation adjusting mechanism and the second rotation adjusting mechanism, the operation degree of freedom is high, use is easy, and the working efficiency is high. The problem that existing manual operation equipment is difficult to meet the workpiece posture adjusting requirement can be effectively solved, and the production and machining efficiency and quality can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of production auxiliary equipment, and in particular relates to a multi-degree-of-freedom auxiliary alignment device. Background Art

[0002] Moving materials is relatively common in production and processing, such as stacking production materials, moving blanks to molds, and assembling separate parts. For operations such as stacking production materials that require lower movement accuracy, they are generally completed with the help of forklifts and other equipment. For operations such as moving blanks to molds and assembling separate parts that require higher movement accuracy, they are generally completed by manually operated grasping equipment or manual handling.

[0003] Among the existing grasping devices, the grasping devices suitable for manual operation mostly have a low degree of operational freedom. For example, Chinese patent CN221088205U discloses a workpiece grasping device, which can only perform lifting and sliding actions and cannot meet the operation requirements for adjusting the workpiece posture; for example, Chinese patent CN113523316A discloses an adjustment device and a method of use dedicated to six-axis machining equipment. Although the adjustment device has a high degree of operational freedom, it generally adopts program automatic control and is difficult to operate manually. In the production and processing involved by the applicant, it is often necessary to laterally load a workpiece with a regular cross-section into a transverse groove of another workpiece that matches it. Since the existing gripping equipment has low degrees of freedom or difficult manual operation, it is difficult to meet the needs of manual precise and flexible adjustment of the workpiece posture when performing the transverse loading action. Currently, the applicant mostly uses manual handling and adjustment of the workpiece posture to complete the above-mentioned transverse loading action, but manual handling is not only time-consuming and labor-intensive, but also easily causes damage to the workpiece in the process of repeatedly adjusting the workpiece posture to complete the alignment and loading. Therefore, it is necessary to design a multi-degree-of-freedom auxiliary alignment device with simple structure and simple operation to improve the efficiency and quality of production and processing. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a multi-degree-of-freedom auxiliary alignment device to solve the technical problem that existing manual operation equipment is difficult to meet the needs of workpiece posture adjustment, thereby achieving the effect of improving production and processing efficiency and quality.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A multi-degree-of-freedom auxiliary alignment device includes a base, a plurality of universal wheels are connected below the base, a fixed bracket is arranged above the base, a vertical adjustment mechanism is arranged on the fixed bracket, and a movable bracket is connected to the fixed bracket through the vertical adjustment mechanism, and the movable bracket realizes vertical movement through the vertical adjustment mechanism; the movable bracket is arranged horizontally, and a first rotary adjustment mechanism is arranged at one end away from the fixed bracket, the rotary axis of the first rotary adjustment mechanism is arranged horizontally and perpendicular to the length direction of the movable bracket, a second rotary adjustment mechanism is arranged on the rotary axis of the first rotary adjustment mechanism, the rotary axis of the second rotary adjustment mechanism is perpendicular to the rotary axis of the first rotary adjustment mechanism, and the output end of the rotary axis of the second rotary adjustment mechanism is away from the fixed bracket and connected to a workpiece clamping seat.

[0006] Furthermore, the vertical adjustment mechanism includes a screw rod rotatably connected to the fixed bracket, the screw rod vertically penetrates the movable bracket and is threadedly connected, the movable bracket is vertically slidably connected to the fixed bracket to cooperate with the screw rod to achieve vertical movement, and a handle is provided at one end of the screw rod to rotate the screw rod.

[0007] Furthermore, a horizontal protrusion on one side of the fixed bracket is formed with two vertically spaced connecting ears, and the two ends of the screw rod are rotatably connected to the two connecting ears respectively; two vertically extending dovetail grooves are provided on the side of the fixed bracket where the connecting ears are located, and the screw rod is located between the two dovetail grooves, and a slider adapted to the dovetail groove is formed on a protrusion on one side of the movable bracket toward the fixed bracket, and the slider is located in the dovetail groove and slides together.

[0008] Furthermore, the first rotary adjustment mechanism includes a rotary shaft and a first housing, the first housing is fixedly connected to the movable bracket, one end of the rotary shaft of the first rotary adjustment mechanism is rotatably connected in the first housing and synchronously rotatably connected to the first worm gear, and the other end serves as an output end and is connected to the second rotary adjustment mechanism, a first worm gear meshing with the first worm gear is rotatably provided in the first housing, one end of the first worm gear extends out of the first housing and is connected to a handle for rotating the first worm gear.

[0009] Furthermore, the second rotary adjustment mechanism includes a rotary shaft and a second housing, the second housing is fixedly connected to the output end of the rotary shaft of the first rotary adjustment mechanism, one end of the rotary shaft of the second rotary adjustment mechanism is rotatably connected in the second housing and synchronously rotatably connected to a second worm gear, and the other end serves as an output end and is fixedly connected to a workpiece clamping seat, a second worm gear meshing with the second worm gear is rotatably provided in the second housing, one end of the second worm gear extends out of the second housing and is connected to a handle for rotating the second worm gear.

[0010] Furthermore, the movable bracket is U-shaped and its mouth is facing away from the fixed bracket. The first rotary adjustment mechanism is located at one end of the U-shape of the movable bracket, and the second rotary adjustment mechanism is located on the inner side of the movable bracket. An auxiliary shaft is provided between the second housing and the other end of the U-shape of the movable bracket. The auxiliary shaft is coaxial with the rotary axis of the first rotary adjustment mechanism. One end of the auxiliary shaft is rotatably connected to the movable bracket, and the other end is fixedly connected to the second housing.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The multi-degree-of-freedom auxiliary alignment device described in the present invention has a base that provides an overall support function. The base realizes X-axis movement, Y-axis movement and Z-axis rotation through universal wheels. The movable bracket on the base realizes Z-axis movement through a vertical adjustment mechanism. The workpiece clamping seat at the end of the movable bracket realizes Y-axis rotation through a first rotary adjustment mechanism and realizes X-axis rotation through a second rotary adjustment mechanism. When in use, the workpiece is fixed by the workpiece clamping seat, and the position and posture of the workpiece can be adjusted in six degrees of freedom by moving the base, operating the vertical adjustment mechanism, the first rotary adjustment mechanism and the second rotary adjustment mechanism respectively. The operation has high freedom of operation and is simple to use. It can effectively solve the problem that existing manual operation equipment is difficult to meet the workpiece posture adjustment needs, which is beneficial to improving production and processing efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A is a perspective view of the multi-degree-of-freedom auxiliary alignment device according to the embodiment; Figure 2 A perspective view B of the multi-degree-of-freedom auxiliary alignment device according to the embodiment; Figure 3 for Figure 2 The three-dimensional image of the first housing and the second housing is hidden at C in the middle; Figure 4 A schematic diagram of the use of the multi-degree-of-freedom auxiliary alignment device described in the embodiment; Among them, there are a fixed bracket 1, a movable bracket 2, a first rotating axis 3, a second rotating axis 4, a workpiece clamping seat 5, a screw 6, a handle 7, a connecting ear 8, a dovetail groove 9, a first housing 10, a first worm wheel 11, a first worm 12, a second housing 13, a second worm wheel 14, a second worm 15, and an auxiliary shaft 16. DETAILED DESCRIPTION

[0013] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0014] Example: See also Figure 1 and Figure 2, a multi-degree-of-freedom auxiliary alignment device, including a base, a plurality of universal wheels are connected below the base, a fixed bracket 1 is arranged above the base, the base and the universal wheels are common structures, not shown in the attached drawings, the base can adopt a wider plate-like structure, the upper fixed bracket 1 is connected to the middle of its upper surface, and the universal wheels are connected to the four corners of its lower part to provide a stable basic support; a vertical adjustment mechanism is arranged on the fixed bracket 1, and a movable bracket 2 is connected to the vertical adjustment mechanism, and the movable bracket 2 realizes vertical movement through the vertical adjustment mechanism; the movable bracket 2 is arranged horizontally and away from the fixed bracket 1 A first rotary adjustment mechanism is provided at one end, and the rotary axis of the first rotary adjustment mechanism is called the first rotary axis 3. The first rotary axis 3 is horizontally arranged and perpendicular to the length direction of the movable bracket 2. A second rotary adjustment mechanism is provided at the output end of the first rotary axis 3. The rotary axis of the second rotary adjustment mechanism is called the second rotary axis 4. The second rotary axis 4 is perpendicular to the first rotary axis 3. The output end of the second rotary axis 4 is away from the fixed bracket 1 and is connected to a workpiece clamping seat 5. During implementation, the workpiece clamping seat 5 is used to directly connect the workpiece, or to clamp and fix the workpiece by installing a fixture adapted to the workpiece, such as Figure 4 As shown, in this embodiment, the workpiece is rectangular and has a flange at one end. When in use, the flange of the workpiece is connected to the workpiece clamping seat 5 by bolts. For the convenience of explanation and understanding, the vertical direction is defined as the Z-axis direction, the axial direction of the first rotating axis 3 is defined as the Y-axis direction, and the axial direction of the second rotating axis 4 is defined as the X-axis direction.

[0015] The multi-degree-of-freedom auxiliary alignment device described in the present invention has a base that provides overall support. The base realizes X-axis movement, Y-axis movement and Z-axis rotation through universal wheels. The movable bracket 2 on the base realizes Z-axis movement through a vertical adjustment mechanism. The workpiece clamping seat 5 at the end of the movable bracket 2 realizes Y-axis rotation through a first rotary adjustment mechanism and realizes X-axis rotation through a second rotary adjustment mechanism. When in use, the workpiece is fixed by the workpiece clamping seat 5, and the position and posture of the workpiece can be adjusted in six degrees of freedom by moving the base, operating the vertical adjustment mechanism, the first rotary adjustment mechanism and the second rotary adjustment mechanism respectively. The operation has high freedom of operation and is simple to use. It can effectively solve the problem that existing manual operation equipment is difficult to meet the workpiece posture adjustment needs, which is beneficial to improving production and processing efficiency and quality.

[0016] See also Figure 1 and Figure 2 The vertical adjustment mechanism includes a screw rod 6 rotatably connected to the fixed bracket 1, the screw rod 6 vertically penetrates the movable bracket 2 and is threadedly connected, the movable bracket 2 is vertically slidably connected to the fixed bracket 1 to cooperate with the screw rod 6 to achieve vertical movement, and a handle 7 is provided at one end of the screw rod 6 to rotate the screw rod 6; In this way, the screw rod 6 is rotatably connected to the fixed bracket 1, and the movable bracket 2 is threadedly connected to the screw rod 6 and vertically slidably connected to the fixed bracket 1, so that the fixed bracket 1, the screw rod 6 and the movable bracket 2 form a screw moving platform. When in use, the screw rod 6 can be rotated by the handle 7, and the screw rod 6 rotates to drive the movable bracket 2 threaded therewith to move vertically. The vertical movement self-locking can be achieved by selecting a screw rod 6 with a trapezoidal thread, or by designing the movable bracket 2 to be threadedly connected to the screw rod 6 through a self-locking nut. This not only has a simple structure, but also is easy to operate, which is conducive to improving the practicality of the auxiliary alignment device.

[0017] In this embodiment, the arrangement of the screw rod 6 and the movable bracket 2 on the fixed bracket 1 is as follows: a horizontal protrusion on one side of the fixed bracket 1 is formed with two connecting ears 8 distributed vertically at intervals, and the two ends of the screw rod 6 are rotatably connected to the two connecting ears 8 respectively; two vertically extending dovetail grooves 9 are provided on one side of the fixed bracket 1 where the connecting ears 8 are located, and the screw rod 6 is located between the two dovetail grooves 9, and a slider adapted to the dovetail groove 9 is formed on a side of the movable bracket 2 facing the fixed bracket 1, and the slider is located in the dovetail groove 9 and slides in cooperation; In this way, the movable bracket 2 is vertically slidably connected to the fixed bracket 1 through the cooperation of the slider and the dovetail groove 9. The dovetail groove 9 can prevent the slider from detaching laterally and limit the movable bracket 2 from rotating with the screw rod 6, so as to cooperate with the screw rod 6 to adjust the vertical position of the movable bracket 2.

[0018] See also Figure 2 and Figure 3 The first rotary adjustment mechanism includes a rotary shaft and a first housing 10. The first housing 10 is fixedly connected to the movable bracket 2. One end of the first rotary shaft 3 is rotatably connected in the first housing 10 and synchronously rotatably connected to the first worm gear 11, and the other end is used as an output end and connected to the second rotary adjustment mechanism. A first worm 12 meshing with the first worm gear 11 is rotatably provided in the first housing 10. One end of the first worm 12 extends out of the first housing 10 and is connected to a handle 7 so as to rotate the first worm 12; Similarly, the second rotary adjustment mechanism includes a rotary shaft and a second housing 13, the second housing 13 is fixedly connected to the output end of the first rotary shaft 3, one end of the second rotary shaft 4 is rotatably connected in the second housing 13 and synchronously rotatably connected to a second worm gear 14, and the other end is used as an output end and fixedly connected to a workpiece clamping seat 5, a second worm 15 meshing with the second worm gear 14 is rotatably provided in the second housing 13, one end of the second worm 15 extends out of the second housing 13 and is connected to a handle 7 so as to rotate the second worm 15; In this way, when in use, the first worm gear 12 and the second worm gear 15 can be rotated respectively by the handle 7, thereby driving the first rotating shaft 3 and the second rotating shaft 4 to adjust the X-axis angular posture and Y-axis angular posture of the workpiece. The worm gear structure itself has a certain self-locking ability and does not require additional self-locking. It is not only simple in structure but also easy to operate, which is conducive to improving the practicality of the auxiliary alignment device.

[0019] See also Figure 1 and Figure 2 The movable bracket 2 is U-shaped and its mouth faces away from the fixed bracket 1. The first rotary adjustment mechanism is located at one end of the U-shaped movable bracket 2, and the second rotary adjustment mechanism is located inside the movable bracket 2. An auxiliary shaft 16 is provided between the second housing 13 and the other end of the U-shaped movable bracket 2. The auxiliary shaft 16 is coaxial with the first rotary shaft 3. One end of the auxiliary shaft 16 is rotatably connected to the movable bracket 2, and the other end is fixedly connected to the second housing 13. In this way, the movable bracket 2 is designed to be U-shaped, which is not only simple and reliable in structure, but also the second rotary adjustment mechanism connected to the workpiece clamping seat 5 is arranged on the U-shaped inner side of the movable bracket 2, and is connected to the second housing 13 through the auxiliary shaft 16 and the first rotary shaft 3 respectively, which is beneficial to improve the stability of the connection between the second rotary adjustment mechanism and the movable bracket 2, and is beneficial to improve the overall structural strength of the auxiliary alignment device and improve the reliability of use.

[0020] For ease of understanding, the use and operation of the auxiliary alignment device of the present invention are described by way of example. Figure 4 , the rectangular workpiece is connected to the plate-shaped workpiece clamping seat 5 through the flange at the end by bolts. The following steps are required to accurately insert the rectangular workpiece into the groove on the side of another workpiece: 1) Based on the universal wheel, the base is pushed to move forward, backward, left and right and rotate horizontally to move the rectangular workpiece closer to and toward the groove; 2) The position of the rectangular workpiece in the Z-axis direction is adjusted by the vertical adjustment mechanism to make the rectangular workpiece and the groove equal in height; 3) Through the first rotary adjustment mechanism, the rectangular workpiece is rotated along the Y axis so that the rectangular workpiece faces the groove to achieve equal height alignment; 4) Through the second rotary adjustment mechanism, the rectangular workpiece is rotated along the X axis so that the end face contour of the rectangular workpiece is aligned with the groove contour to reduce the angle difference so that the rectangular workpiece can be smoothly loaded into the groove to avoid collision damage. 5) After adjustment in place, the base is moved along the X axis to load the rectangular workpiece into the groove.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. A multi-degree-of-freedom auxiliary alignment device, characterized in that: It includes a base, a plurality of universal wheels are connected under the base, a fixed bracket is provided above the base, a vertical adjustment mechanism is provided on the fixed bracket, and a movable bracket is connected through the vertical adjustment mechanism, and the movable bracket realizes vertical movement through the vertical adjustment mechanism; the movable bracket is horizontally arranged, and a first rotary adjustment mechanism is provided at one end away from the fixed bracket, the rotary axis of the first rotary adjustment mechanism is horizontally arranged and perpendicular to the length direction of the movable bracket, a second rotary adjustment mechanism is provided on the rotary axis of the first rotary adjustment mechanism, the rotary axis of the second rotary adjustment mechanism is perpendicular to the rotary axis of the first rotary adjustment mechanism, and the output end of the rotary axis of the second rotary adjustment mechanism is away from the fixed bracket and connected to a workpiece clamping seat.

2. The multi-degree-of-freedom auxiliary alignment device according to claim 1, characterized in that: The vertical adjustment mechanism includes a screw rod rotatably connected to the fixed bracket, the screw rod vertically penetrates the movable bracket and is threadedly connected, the movable bracket is vertically slidably connected to the fixed bracket to cooperate with the screw rod to achieve vertical movement, and a handle is provided at one end of the screw rod to rotate the screw rod.

3. The multi-degree-of-freedom auxiliary alignment device according to claim 2, characterized in that: A horizontal protrusion on one side of the fixed bracket forms two connecting ears distributed vertically at intervals, and the two ends of the screw rod are rotatably connected to the two connecting ears respectively; two vertically extending dovetail grooves are provided on the side where the connecting ears are located on the fixed bracket, and the screw rod is located between the two dovetail grooves; a slider adapted to the dovetail groove is formed on a protrusion on one side of the movable bracket toward the fixed bracket, and the slider is located in the dovetail groove and slides in cooperation.

4. The multi-degree-of-freedom auxiliary alignment device according to claim 1, characterized in that: The first rotary adjustment mechanism includes a rotary shaft and a first housing. The first housing is fixedly connected to the movable bracket. One end of the rotary shaft of the first rotary adjustment mechanism is rotatably connected in the first housing and synchronously rotatably connected to the first worm gear, and the other end serves as an output end and is connected to the second rotary adjustment mechanism. A first worm gear meshing with the first worm gear is rotatably provided in the first housing. One end of the first worm gear extends out of the first housing and is connected to a handle for rotating the first worm gear.

5. The multi-degree-of-freedom auxiliary alignment device according to claim 4, characterized in that: The second rotary adjustment mechanism includes a rotary shaft and a second housing. The second housing is fixedly connected to the output end of the rotary shaft of the first rotary adjustment mechanism. One end of the rotary shaft of the second rotary adjustment mechanism is rotatably connected in the second housing and synchronously rotatably connected to a second worm gear, and the other end serves as an output end and is fixedly connected to a workpiece clamping seat. A second worm gear meshing with the second worm gear is rotatably provided in the second housing. One end of the second worm gear extends out of the second housing and is connected to a handle for rotating the second worm gear.

6. The multi-degree-of-freedom auxiliary alignment device according to claim 5, characterized in that: The movable bracket is U-shaped with its mouth facing away from the fixed bracket. The first rotary adjustment mechanism is located at one end of the U-shape of the movable bracket, and the second rotary adjustment mechanism is located on the inner side of the movable bracket. An auxiliary shaft is provided between the second housing and the other end of the U-shape of the movable bracket. The auxiliary shaft is coaxial with the rotary axis of the first rotary adjustment mechanism, and one end of the auxiliary shaft is rotatably connected to the movable bracket, and the other end is fixedly connected to the second housing.

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