Positioning mechanism for three-shaft spin riveting machine
Through the cylinder-driven positioning mechanism and adaptive wheel adjustment, the problem of difficulty in positioning special-shaped parts by traditional three-axis riveting machines is solved, and precise clamping of different workpieces is achieved, which improves machining accuracy and consistency.
Patent Information
- Application Number
- CN202422658300.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-01
AI Technical Summary
The positioning mechanism of the traditional three-axis riveter machine is difficult to effectively position and clamp different types of workpieces, especially special-shaped parts.
The cylinder-driven positioning mechanism is adopted to achieve centering positioning of the workpiece through the joint movement of the connecting rod and the transmission frame, and the rotatable rotor is adaptively adjusted to adapt to the workpiece with irregular curved surfaces.
Effective positioning and clamping of different types of workpieces, especially precise clamping of special-shaped parts, improving machining accuracy and consistency.
Smart Images
Figure CN223288937U_ABST
Abstract
Description
Technical Field
[0001] The utility model discloses a positioning mechanism for a three-axis rotary riveting machine, and relates to the technical field of rotary riveting machine processing. Background Art
[0002] A three-axis rotary riveting machine is a type of equipment specifically designed to perform rotary riveting operations. Three-axis rotary riveting machines typically include X-, Y-, and Z-axis control, which enables them to move and position in multiple directions. This multi-axis control allows for precise riveting operations on complex workpieces. Its primary function is to perform riveting between two or more workpieces, typically using rotary motion to create a secure connection between the workpieces. Due to the presence of a three-axis control system, this type of equipment is typically able to provide high precision and stability, ensuring accurate and consistent riveting operations. Some modern three-axis rotary riveting machines are equipped with automated control systems that can complete the riveting process through preset programs, improving production efficiency and reducing operator workload.
[0003] When performing precision riveting, the workpiece needs to be positioned. There are many types of workpieces that need to be riveted, including regular parts and special-shaped parts. Traditional positioning mechanisms have difficulty in positioning different types of workpieces. Therefore, it is necessary to provide a positioning mechanism for a three-axis riveting machine to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a positioning mechanism for a three-axis rotary riveting machine, which can achieve the effect of positioning and clamping different types of workpieces during operation.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning mechanism for a three-axis riveting machine, comprising a base, characterized in that: a control panel is installed on the base for controlling the movement of the entire three-axis riveting machine, a three-axis motion mechanism is installed on the base for adjusting the position of the workpiece during processing, a working part is installed on the base for processing the workpiece, and a positioning mechanism is installed on the three-axis motion mechanism for positioning the processed workpiece; the positioning mechanism comprises a fixed seat, a push frame, the fixed seat is fixedly connected to the three-axis motion mechanism, a connecting rod is rotatably connected to the push frame, a connecting frame is installed at the other end of the connecting rod, a transmission frame is installed on the connecting frame, a pressure plate is installed at the front end of the transmission frame for clamping the workpiece, limit rods are installed on both sides of the pressure plate, a limit assembly is installed on the limit rod, and a workpiece placement plate is installed under the pressure plate for placing the workpiece to be processed; wherein, the cylinder pushes the connecting frame forward or backward to drive the connecting rod to open inward or outward, and the connecting rod drives the transmission frame to move toward the center or open outward along the slide.
[0006] Preferably, the positioning mechanism is driven by a cylinder.
[0007] Preferably, a cylinder is installed on the push frame for pushing the push frame forward.
[0008] Preferably, two groups of connecting rods are provided, a slider is installed on the connecting frame, a slide is installed under the workpiece placement plate, and the slide is slidably connected to the slider.
[0009] Preferably, a large number of grooves are provided on the workpiece placement plate to enhance the friction of the workpiece placement plate so that it is not easy to slide.
[0010] Preferably, four groups of limiting components are provided, and the limiting components are fixedly connected to the fixing seat to limit the horizontal position of the pressure plate.
[0011] Preferably, an inclined arc-shaped bend is provided in the middle of the pressure plate, several groups of wheels are rotatably installed on the pressure plate, several groups of slides are slidably connected in the inclined arc-shaped bend, wheels are rotatably installed on the slide, and a spring is installed at the connection between the inclined arc-shaped bend and the bottom end of the slide to increase the clamping force and adaptive clamping return.
[0012] Compared with the prior art, the beneficial effects of the present invention are: in summary, the cylinder pushes the connecting frame to move backward, driving the connecting rod to retract inward, and the connecting rod drives the transmission frame to move closer to the center along the slide, so that the pressure plate contacts the surface of the workpiece to clamp it. Because the push frame only moves in a straight line at the center of the mechanism, the angle of rotation of the connecting rod and the distance of movement of the connecting frame are the same, so the centering and positioning function can be achieved. When the irregular curved surface contacts the slide, the slide will be further expanded and contracted according to the shape of its irregular curved surface for fine adjustment, and then the wheel installed thereon rotates to adaptively adjust the clamping position, thereby achieving more effective clamping of irregular curved workpieces during positioning. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is an overall schematic diagram of a positioning mechanism for a three-axis rotary riveting machine;
[0014] Figure 2 for Figure 1 A schematic top view of a positioning mechanism for a three-axis rotary riveting machine;
[0015] Figure 3 for Figure 1 A bottom view schematic diagram of a positioning mechanism for a three-axis rotary riveting machine;
[0016] Among them, the reference numerals in the figures are:
[0017] 1. Base; 11. Control panel; 2. Three-axis motion mechanism; 3. Positioning mechanism; 4. Working part; 31. Workpiece placement plate; 32. Limit assembly; 33. Press plate; 331. Limit rod; 332. Slide; 333. Rotating wheel; 34. Fixed seat; 35. Slide; 36. Transmission frame; 37. Connecting rod; 38. Push frame; 39. Connecting frame. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] Specific implementation cases:
[0020] like Figure 1 As shown, a positioning mechanism for a three-axis riveting machine includes a base 1, a control panel 11 is mounted on the base 1 for controlling the movement of the entire three-axis riveting machine, a three-axis motion mechanism 2 is mounted on the base 1 for adjusting the position of a workpiece during processing, a working portion 4 is mounted on the base 1 for processing the workpiece, and a positioning mechanism 3 is mounted on the three-axis motion mechanism 2 for positioning the processed workpiece. The positioning mechanism 3 is driven by a cylinder.
[0021] This rotary riveting machine is an existing technology, and the specific working principle will not be described in detail;
[0022] The three-axis motion mechanism 2 in the three-axis rotary riveting machine can realize the movement in the "X" axis and "Y" axis directions. It is a prior art and will not be described in detail here.
[0023] The working part 4 can realize the movement of the rivet head in the "Z" axis direction. Its main function is to perform rivet processing on the workpiece. It is a prior art and will not be described in detail here.
[0024] The positioning mechanism 3 in the three-axis rotary riveting machine can perform positioning correction on the workpiece placed thereon, and its specific working principle is as follows;
[0025] like Figure 2-Figure 3As shown, the positioning mechanism 3 includes a fixed seat 34 and a push frame 38. The fixed seat 34 is fixedly connected to the three-axis motion mechanism 2. A cylinder (not shown in the figure) is installed on the push frame 38 for pushing the push frame 38 forward. Two sets of connecting rods 37 are rotatably connected to the push frame 38. A connecting frame 39 is installed at the other end of the connecting rod 37. A slider (not shown in the figure) is installed on the connecting frame 39. A transmission frame 36 is installed at the front end of the transmission frame 36 for clamping the workpiece. Limit rods 331 are installed on both sides of the pressure plate 33. A limit assembly 32 is installed on the limit rod 331. A workpiece placement plate 31 is installed below the pressure plate 33 for placing the workpiece to be processed. A large number of grooves (not marked in the figure) are provided on the workpiece placement plate 31 for enhancing the friction force working on the workpiece placement plate 31 so that it is not easy to slide. A slide 35 is installed below the workpiece placement plate 31, and the slide 35 is slidably connected to the slider.
[0026] The cylinder pushes the connecting frame 39 forward or backward to drive the connecting rod 37 to open inward or outward, and the connecting rod 37 drives the transmission frame 36 along the slide 35 to move toward the center or open outward.
[0027] During operation, the workpiece is placed on the workpiece placement plate 31, and then the cylinder is started to pull the push frame 38 inward, driving the connecting rod 37 to tighten inward. The sliding connection between the slide 35 and the slider limits the movement direction of the connecting frame 39 on which the slider is installed, so that the connecting rod 37 drives the two groups of connecting frames 39 to move inward respectively, directly driving the connecting frames 39 to move toward the workpiece to be processed, directly contacting the workpiece surface, achieving positioning and clamping, and preventing its position from shifting.
[0028] After the processing is completed, the cylinder pushes the push frame 38 outward to push the connecting rod 37 outward. The sliding connection between the slide 35 and the slider restricts the movement direction of the connecting frame 39 mounted on the slider, so that the connecting rod 37 drives the two sets of connecting frames 39 to move linearly outward respectively, releasing the clamped workpiece.
[0029] Four groups of the limiting components 32 are provided. The limiting components 32 are fixedly connected to the fixing seat 34 to limit the horizontal position of the pressing plate 33 .
[0030] When positioning and clamping special-shaped workpieces, the working principle is as follows;
[0031] The middle part of the pressure plate 33 is provided with an inclined arc-shaped curve (not shown in the figure), and several groups of running wheels 333 are rotatably mounted on the pressure plate 33. Several groups of slides 332 are slidably connected in the inclined arc-shaped curve. The running wheels 333 are rotatably mounted on the slides 332. A spring (not shown in the figure) is installed at the connection between the inclined arc-shaped curve and the bottom end of the slide 332 to increase the clamping force and adaptively clamp and return.
[0032] When positioning and clamping a special-shaped workpiece, its special-shaped surface can adjust its position adaptively by rotating the wheels 333 when it contacts a plurality of groups of rotating wheels 333, so as to facilitate clamping. When the irregular curved surface contacts the slide 332, the slide 332 will adjust its shape to the shape of the irregular curved surface, and then the rotating wheels 333 mounted thereon will rotate to adaptively adjust the clamping position, so that the special-shaped workpiece can be clamped more effectively when the positioning mechanism 3 positions it, making the processing more accurate.
[0033] In summary, the connecting frame 39 is pushed backward by the cylinder to drive the connecting rod 37 to retract inward, and the connecting rod 37 drives the transmission frame 36 to move closer to the center along the slide 35, so that the pressure plate 33 contacts the surface of the workpiece to clamp it. Because the push frame 38 only makes a linear motion in the center of the mechanism, the rotation angle of the connecting rod 37 and the movement distance of the connecting frame 39 are the same, so the centering and positioning function can be achieved. When the irregular surface contacts the slide 332, the slide 332 will be further expanded and contracted according to the shape of its irregular surface for fine adjustment, and then the wheel 333 installed thereon rotates to adaptively adjust the clamping position, thereby achieving more effective clamping of irregular curved workpieces during positioning.
[0034] The above description is merely a preferred embodiment of the present application. The scope of protection of the present application is not limited to the above embodiment. All technical solutions based on this concept fall within the scope of protection of the present application. It should be noted that for those skilled in the art, improvements and modifications that do not depart from the principles of the present application should also be considered within the scope of protection of the present application.
Claims
1. A positioning mechanism for a three-axis rotary riveting machine, comprising a base (1), characterized in that: A control panel (11) is mounted on the base (1) for controlling the movement of the entire three-axis rotary riveting machine, a three-axis motion mechanism (2) is mounted on the base (1) for adjusting the position of a workpiece during processing, a working portion (4) is mounted on the base (1) for processing the workpiece, and a positioning mechanism (3) is mounted on the three-axis motion mechanism (2) for positioning the processed workpiece; The positioning mechanism (3) includes a fixed seat (34) and a push frame (38), and is characterized in that: the fixed seat (34) is fixedly connected to the three-axis motion mechanism (2), the push frame (38) is rotatably connected to a connecting rod (37), the other end of the connecting rod (37) is installed with a connecting frame (39), a transmission frame (36) is installed on the connecting frame (39), a pressure plate (33) is installed at the front end of the transmission frame (36) for clamping the workpiece, limiting rods (331) are installed on both sides of the pressure plate (33), a limiting assembly (32) is installed on the limiting rod (331), and a workpiece placement plate (31) is installed below the pressure plate (33) for placing the workpiece to be processed; The cylinder pushes the connecting frame (39) to move forward or backward to drive the connecting rod (37) to open inward or outward, and the connecting rod (37) drives the transmission frame (36) to move toward the center or open outward along the slideway (35).
2. The positioning mechanism for a three-axis riveting machine according to claim 1, characterized in that: The positioning mechanism (3) is driven by a cylinder.
3. The positioning mechanism for a three-axis riveting machine according to claim 1, characterized in that: The push frame (38) is provided with a cylinder for pushing the push frame (38) to move forward.
4. The positioning mechanism for a three-axis riveting machine according to claim 1, characterized in that: The connecting rods are provided in two groups. A slider is installed on the connecting frame (39). A slideway (35) is installed below the workpiece placement plate (31). The slideway (35) is slidably connected to the slider.
5. The positioning mechanism for a three-axis riveting machine according to claim 1, characterized in that: A large number of grooves are provided on the workpiece placement plate (31) to enhance the friction force of the workpiece placement plate (31) so that the workpiece is not easy to slide.
6. The positioning mechanism for a three-axis riveting machine according to claim 1, characterized in that: Four groups of the limiting components (32) are provided, and the limiting components (32) are fixedly connected to the fixing seat (34) to limit the horizontal position of the pressing plate (33).
7. The positioning mechanism for a three-axis riveting machine according to claim 1, characterized in that: The middle part of the pressure plate (33) is provided with an inclined arc-shaped bend, and a plurality of groups of rotating wheels (333) are rotatably mounted on the pressure plate (33). A plurality of groups of slides (332) are slidably connected in the inclined arc-shaped bend, and a rotating wheel (333) is rotatably mounted on the slide (332). A spring is installed at the connection between the inclined arc-shaped bend and the bottom end of the slide (332) for increasing the clamping force and adaptively clamping and returning.