A special-shaped column positioning and adjusting mechanism
The positioning process of irregularly shaped cylindrical parts is simplified by pre-positioning, axial and circumferential positioning mechanisms, which solves the problem of complex adjustment of irregularly shaped cylindrical parts in the prior art and achieves stable positioning at low cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU DATIAN CNC MACHINE TOOL
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-02
AI Technical Summary
The existing material distribution device cannot adjust the circumferential position of irregular cylindrical parts, which means that the robot needs to use visual inspection and multiple sensors to process irregular cylindrical parts, making the adjustment complex and costly.
By employing a pre-positioning mechanism, an axial positioning mechanism, and a circumferential positioning mechanism, the pre-positioning, axial positioning, and circumferential positioning of irregularly shaped column parts are achieved through mechanical structures. The positioning process of the column parts is simplified by utilizing the cooperation of the gripper assembly, pressure plate, and positioning sleeve.
It achieves simple and stable positioning of irregularly shaped cylindrical parts, reduces the configuration requirements of robotic arms, reduces the use of visual inspection and sensors, and lowers costs.
Smart Images
Figure CN224310147U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automation equipment technology, and in particular to a positioning and adjustment mechanism for irregularly shaped column parts. Background Technology
[0002] like Figure 6 The drill bit 4 shown is a drill bit blank to be processed. This drill bit is cylindrical in shape, with a rectangular (square or rectangular) end cross-section, belonging to an irregular cylindrical component. This irregular cylindrical component needs to be milled on its four sides at the end using a CNC machine tool (such as a machining center) to improve accuracy, and a cross groove also needs to be milled on the end face. In order to improve loading and unloading efficiency and reduce labor costs, many scenarios now use robotic arms to replace manual loading and unloading. First, the irregular cylindrical component is separated by a material separating device, and then the cylindrical component is picked up by the robotic arm. However, because the processing of this irregular cylindrical component has angle requirements, the existing material separating device cannot adjust the circumferential position of the irregular cylindrical component. If the angle of the irregular cylindrical component is adjusted by a robotic arm, visual inspection and multiple sensors are required, which requires repeated inspection and adjustment, making the adjustment very troublesome and placing high demands on the configuration of the robotic arm. Utility Model Content
[0003] In order to solve the above-mentioned problems in the prior art, this utility model provides a positioning and adjustment mechanism for irregularly shaped columns that is simple in structure, low in cost, and easy to adjust.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A positioning and adjustment mechanism for an irregularly shaped column includes a pre-positioning mechanism, an axial positioning mechanism, and a circumferential positioning mechanism. The pre-positioning mechanism includes a base, a first support seat at one end of the base, and a second support seat at the other end of the base. The top surfaces of both the first and second support seats are provided with pre-positioning grooves for supporting the column. The axial positioning mechanism includes a gripper assembly on one side of the base and a first translational force driving the gripper assembly to move closer to or away from the column in a direction perpendicular to the column's axis. The gripper assembly includes two sets of clamping arms and a clamping mechanism that drives the clamping arms to move synchronously closer to or away from the column. The clamping arms have clamping grooves on their opposing sides for centering the column. The circumferential positioning mechanism includes a pressure plate at one end of the column, a second translational force that drives the pressure plate to move axially along the column, and an adjustment assembly at the other end of the column. The adjustment assembly includes a motor, a third translational force that drives the motor to move axially along the column, and a positioning sleeve on the motor shaft. The end of the positioning sleeve has a positioning hole that matches the cross-sectional shape of the end of the column. When the column is clamped by the clamping arms, the rotation axis of the positioning sleeve is coaxial with the axis of the column clamped by the gripper assembly.
[0006] By adopting the above technical solution: after the column enters the pre-positioning mechanism, it is pre-positioned by the pre-positioning grooves on the first and second support seats. Then, the first translational force drives the gripper assembly to approach the column and clamps the column with two sets of clamping arms. After the column is clamped by the clamping grooves, its axial position is limited. The pressure plate and positioning sleeve approach the column and press down on both ends of the column. Then, the motor drives the positioning sleeve to rotate one revolution (at least one revolution), and the gripper assembly releases the column. During the rotation of the positioning sleeve, there will inevitably be an angle that makes the cross-section of the end of the column match the shape of the positioning hole, so that the column is pressed into the positioning hole by the pressure plate. Then, the motor drives the positioning sleeve to rotate in the opposite direction to the preset position. At this time, the circumferential position of the column is restricted, which facilitates the subsequent material handling by the robot arm. This positioning and adjustment mechanism has a simple structure and simple control, and the column positioning is more convenient and stable.
[0007] Preferably, the base is equipped with a lifting mechanism at its bottom. When the column enters the pre-positioning slot and is pre-positioned, the lifting mechanism raises the base to a preset position, placing the pre-positioned column between the two clamping arms. By adjusting the height of the pre-positioned column using the lifting mechanism, the column can be positioned between the two clamping arms, facilitating stable clamping when the arms approach.
[0008] Preferably, the first support is fixed to the base, and the second support is slidably connected to the base. A first translation mechanism for adjusting the distance between the second support and the first support is provided between the second support and the base. When the lengths of different types of columns differ, the distance between the second support and the first support can be adjusted by the first translation mechanism to meet the pre-positioning requirements of columns of different sizes and improve versatility.
[0009] Preferably, the base is fixedly provided with a first slide rail, and the second support is slidably connected to the first slide rail; the first translation mechanism includes a rack disposed on the top surface of the first slide rail, a gear meshing with the rack, and a drive motor disposed in the second support and connected to the gear.
[0010] Preferably, the bottom of the first translational force is provided with a second slide rail distributed parallel to the axial direction of the column, the first translational force is slidably connected to the second slide rail, and the bottom of the first translational force is provided with a second translation mechanism. The position of the gripper assembly holding the column can be adjusted by the second translation mechanism.
[0011] Preferably, the second translation mechanism includes a lead screw distributed parallel to the second slide rail and a handwheel fixed to one end of the lead screw.
[0012] Preferably, the second translational force is fixed on the second support, and the pressure plate is disposed in a pre-positioning groove on the second support.
[0013] Therefore, this utility model has the advantages of simple structure, low cost and convenient adjustment. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of a column entering a pre-positioning mechanism and being pre-positioned.
[0015] Figure 2 This is a schematic diagram of the axial positioning of a column member by an axial positioning mechanism.
[0016] Figure 3 This is a schematic diagram of the pressure plate positioning sleeve pressing the two ends of the column in the circumferential positioning mechanism.
[0017] Figure 4 This is a schematic diagram showing the state of the column entering the positioning hole during the rotation of the positioning sleeve.
[0018] Figure 5 After the positioning sleeve rotates in the opposite direction to the preset position, the gripper assembly clamps the column, resulting in the column being positioned circumferentially.
[0019] Figure 6 This is a structural schematic diagram of an irregularly shaped column. Detailed Implementation
[0020] To make the technical problem to be solved, the technical solution, and the beneficial technical effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the scope of protection of the present utility model.
[0021] It should be understood that the terms "first," "second," etc., used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly specifying the number of technical features indicated. Features specified as "first" or "second" may expressly or implicitly indicate that at least one of those features is included.
[0022] like Figures 1-5The illustrated positioning and adjustment mechanism for an irregularly shaped column includes a pre-positioning mechanism 1, an axial positioning mechanism 2, and a circumferential positioning mechanism 3. The pre-positioning mechanism 1 includes a base 10, a first support 11 located at one end of the base 10, and a second support 12 located at the other end of the base 10. The top surfaces of both the first support 11 and the second support 12 are provided with pre-positioning grooves 13 for supporting the column 4. The axial positioning mechanism 2 includes a gripper assembly 20 located on one side of the base 10 and a first translational force 21 driving the gripper assembly 20 to move closer to or away from the column in a direction perpendicular to the column axis. The gripper assembly 20 includes two sets of clamping arms 201 and a clamping force 202 driving the clamping arms 201 to move synchronously closer to or away from the column. The opposing sides of the clamping arms 201 are provided with pre-positioning grooves 13 for supporting the column. The column is centered in a clamping groove 203; the circumferential positioning mechanism 3 includes a pressure plate 31 at one end of the column, a second translational force 32 that drives the pressure plate 31 to move along the axial direction of the column, and an adjustment assembly 33 at the other end of the column; the adjustment assembly 33 includes a motor 330, a third translational force 331 that drives the motor 330 to move along the axial direction of the column, and a positioning sleeve 332 on the shaft of the motor 330. The end of the positioning sleeve 332 is provided with a positioning hole 333 that matches the cross-sectional shape of the end of the column; when the column is clamped by the clamping arm 201, the rotation axis of the positioning sleeve 332 is coaxial with the axis of the column clamped by the gripper assembly 20.
[0023] The bottom of the base 10 is provided with a lifting power 14. When the column enters the prepositioning groove 13 and is prepositioned, the lifting power 14 drives the base 10 to rise to the preset position, so that the prepositioned column is positioned between the two sets of clamping arms 201. The first support seat 11 is fixed on the base 10, and the second support seat 12 is slidably connected to the base 10. A first translation mechanism 15 for adjusting the distance between the second support seat 12 and the first support seat 11 is provided between the second support seat 12 and the base 10. The second translation force 32 is fixed on the second support seat 12, and the pressure plate 31 is provided in the prepositioning groove 13 on the second support seat 12. The base 10 is fixed with a first slide rail 16, and the second support seat 12 is slidably connected to the first slide rail 16. The first translation mechanism 15 includes a rack 150 provided on the top surface of the first slide rail 16, a gear meshing with the rack 150, and a drive motor connected to the gear provided in the second support seat 12 (the drive motor and gear are provided in the second support seat and are not shown in the figure).
[0024] The bottom of the first translation force 21 is provided with a second slide rail 22 that is parallel to the axis of the column. The first translation force 21 is slidably connected to the second slide rail 22. The bottom of the first translation force 21 is provided with a second translation mechanism 23. The second translation mechanism 23 includes a lead screw 230 that is parallel to the second slide rail 22 and a handwheel 231 fixed to one end of the lead screw 230.
[0025] In the above embodiments, the first translational force, the second translational force, the third translational force, and the lifting force are all configured as cylinders, and the clamping force is configured as a double-headed cylinder; the prepositioning groove and the clamping groove are both configured as V-shaped grooves, so as to be able to adapt to the centering of column members of different diameters.
[0026] Referring to the accompanying drawings, the method of using this utility model is as follows: Figure 1 As shown, the column 4 is pre-positioned in the pre-positioning slots 13 on the first support base 11 and the second support base 12. The lifting force drives the base to rise to the preset position, and the first translational force drives the gripper assembly to approach the column and clamp the column through the two clamping arms 201. Figure 2 As shown, the column is axially positioned at this point; the second translational force causes the pressure plate to press down on one end of the column, and the third translational force causes the positioning sleeve to press down on the other end of the column (the initial position of the positioning hole on the positioning sleeve is the circumferential positioning position), and the state at this point is as follows. Figure 3 As shown, a motor (either a stepper motor or a servo motor) drives the positioning sleeve to rotate more than 360° (record the rotation angle). During this rotation, there will inevitably be an angle at which one rectangular end of the column enters the positioning hole. The gripper assembly releases the column, and then the motor drives the positioning sleeve to rotate in the opposite direction by the same angle back to the initial position. At this point, the circumferential position of the column has been adjusted to the preset position. Finally, the gripper assembly grips the column again, waiting for the subsequent robotic arm to pick up the material. This positioning and adjustment mechanism uses a purely mechanical structure to achieve axial and circumferential positioning of the column. The structure is simple and stable, eliminating the need for a large number of sensors and vision inspection systems for position detection and adjustment, resulting in lower overall costs.
[0027] In the description of this utility model, it should be understood that the directions or positional relationships indicated by up, down, left, right, inner end, outer end, one end, and the other end are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the purpose of more clearly describing the technical solution of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as a limitation of this utility model.
[0028] Although specific embodiments of the present invention are described in detail herein, they are given for illustrative purposes only and should not be construed as limiting the scope of the present invention. Various substitutions, alterations, and modifications may be conceived without departing from the spirit and scope of the present invention.
Claims
1. A positioning and adjusting mechanism for irregularly shaped columnar parts, characterized in that, Includes a pre-positioning mechanism (1), an axial positioning mechanism (2), and a circumferential positioning mechanism (3); The prepositioning mechanism (1) includes a base (10), a first support seat (11) at one end of the base (10), and a second support seat (12) at the other end of the base (10). The top surfaces of the first support seat (11) and the second support seat (12) are provided with prepositioning grooves (13) for supporting the column (4). The axial positioning mechanism (2) includes a gripper assembly (20) located on one side of the base (10) and a first translational force (21) that drives the gripper assembly (20) to move closer to or away from the column in a direction perpendicular to the column axis; the gripper assembly (20) includes two sets of clamping arms (201) and a clamping force (202) that drives the clamping arms (201) to move closer to or away synchronously; the opposing sides of the clamping arms (201) are provided with clamping grooves (203) for centering the column. The circumferential positioning mechanism (3) includes a pressure plate (31) at one end of the column, a second translational force (32) that drives the pressure plate (31) to move along the axial direction of the column, and an adjustment assembly (33) at the other end of the column. The adjustment assembly (33) includes a motor (330), a third translational force (331) that drives the motor (330) to move along the axial direction of the column, and a positioning sleeve (332) on the shaft of the motor (330). The end of the positioning sleeve (332) is provided with a positioning hole (333) that matches the cross-sectional shape of the end of the column. When the column is clamped by the clamping arm (201), the rotation axis of the positioning sleeve (332) is coaxial with the axis of the column clamped by the gripper assembly (20).
2. The positioning and adjusting mechanism for irregularly shaped columns according to claim 1, characterized in that, The bottom of the base (10) is provided with a lifting power (14). When the column enters the prepositioning slot (13) and is prepositioned, the lifting power (14) drives the base (10) to rise to the preset position, so that the prepositioned column is in the position between the two sets of clamping arms (201).
3. A positioning and adjusting mechanism for irregularly shaped columns according to claim 1 or 2, characterized in that, The first support (11) is fixed on the base (10), the second support (12) is slidably connected to the base (10), and a first translation mechanism (15) is provided between the second support (12) and the base (10) for adjusting the distance between the second support (12) and the first support (11).
4. The positioning and adjusting mechanism for irregularly shaped columns according to claim 3, characterized in that, The base (10) is fixedly provided with a first slide rail (16), and the second support seat (12) is slidably connected to the first slide rail (16); the first translation mechanism (15) includes a rack (150) provided on the top surface of the first slide rail (16), a gear meshing with the rack (150), and a drive motor provided in the second support seat (12) and connected to the gear.
5. The positioning and adjusting mechanism for irregularly shaped columnar parts according to claim 3, characterized in that, The bottom of the first translation force (21) is provided with a second slide rail (22) that is parallel to the axis of the column. The first translation force (21) is slidably connected to the second slide rail (22). The bottom of the first translation force (21) is provided with a second translation mechanism (23).
6. The positioning and adjusting mechanism for irregularly shaped columnar parts according to claim 5, characterized in that, The second translation mechanism (23) includes a lead screw (230) distributed parallel to the second slide rail (22) and a handwheel (231) fixed at one end of the lead screw (230).
7. The positioning and adjusting mechanism for irregularly shaped column parts according to claim 3, characterized in that, The second translational force (32) is fixed on the second support (12), and the pressure plate (31) is located in the prepositioning groove (13) on the second support (12).