A multi-station fixture positioning device
By designing a multi-station fixture positioning device, the problem of the single function of existing circular workpiece positioning devices is solved, and the flexible switching between outer circle clamping and inner wall support is realized, thereby improving production efficiency and equipment utilization efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN CHANGFENG LASER SWORD MOULD CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-03
AI Technical Summary
Existing circular workpiece positioning devices have limited functionality and are difficult to adapt to both external and internal machining simultaneously, leading to frequent fixture changes, increased operational complexity and equipment downtime, and reduced production efficiency.
Design a multi-station fixture positioning device that achieves flexible switching between outer circle clamping and inner wall support through a combination structure of rotating shaft and positioning plate, and ensures stable positioning of workpiece by using motor-driven gear system and compensation structure.
It enables seamless switching between workpiece clamping on the outer circle and machining on the inner wall, reduces the frequency of fixture replacement, improves production efficiency and ease of operation, and enhances the utilization efficiency of the equipment.
Smart Images
Figure CN224445700U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of multi-station fixture positioning devices, and in particular to a multi-station fixture positioning device. Background Technology
[0002] A workstation fixture positioning device is a mechanical device used to accurately determine the position of a workpiece during the manufacturing process. In modern industrial manufacturing, the processing, assembly, and inspection of round workpieces (such as pipes, ring parts, and cylindrical structural parts) are extremely common. Their processing accuracy and production efficiency have a significant impact on product quality and corporate benefits. For the processing and handling of round workpieces, the fixture positioning device, as a key auxiliary equipment, must ensure that the workpiece maintains a stable position and posture during processing to avoid processing errors caused by factors such as displacement and vibration.
[0003] Currently, most common circular workpiece positioning devices on the market have limited functions, typically only capable of clamping the outer circle or supporting the inner wall. Traditional three-jaw chucks mainly achieve clamping and positioning of the outer circle of a circular workpiece by the radial inward contraction of the jaws, while internal support devices such as expansion sleeves rely on their internal expansion structure to make close contact with the inner wall of the workpiece to fix its position. They are often used for supporting the inner wall of thin-walled pipes. However, when different processes such as outer circle machining and inner wall machining need to be handled simultaneously during production, single-function positioning devices are difficult to adapt flexibly, requiring frequent changes of fixtures. This not only increases the complexity of operation but also prolongs equipment downtime, resulting in reduced production efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a multi-station fixture positioning device, which aims to solve the problems in the prior art.
[0005] This utility model is implemented as follows: a multi-station fixture positioning device includes a base, a fixed platform fixedly connected to the base, a positioning platform fixedly connected to the fixed platform, four positioning discs provided on the positioning platform, a positioning structure provided on the base, the positioning structure mainly consisting of four rotating shafts, all four rotating shafts being rotatably connected to the base via bearings, one end of each rotating shaft being fixedly connected to a positioning disc, and the rotating shaft being rotatably connected to the positioning platform, the positioning platform having several sliding grooves, sliders being slidably connected in the sliding grooves, round rods being fixedly connected to the sliders, and four arc-shaped grooves being provided on the positioning discs.
[0006] Preferably, a first gear is fixedly connected to the rotating shaft, and a disc gear is rotatably connected to the fixed platform via a bearing, the disc gear meshing with the first gear.
[0007] Preferably, a motor is fixedly connected to the base, and a second gear is provided on the base, the second gear being driven to rotate by the motor.
[0008] Preferably, a support block is fixedly connected to the slider, and a rubber block is fixedly connected to the support block.
[0009] Preferably, four fixing rods are fixedly connected to the base, and one end of each fixing rod is fixedly connected to the positioning platform.
[0010] Preferably, the round rod is provided with a compensation structure, which is mainly composed of rectangular grooves. The rectangular grooves are opened on the round rod, and four sliding rods are slidably inserted on the round rod. An arc-shaped plate is fixedly connected to two sliding rods on the same side, and a rubber pad is fixedly connected to the arc-shaped plate.
[0011] Preferably, two fixing plates are fixedly connected in the rectangular groove, and the fixing plates are slidably connected to the slide rod.
[0012] Preferably, a spring is fitted onto the slide rod, one end of the spring is fixedly connected to the fixing plate, and the other end of the spring is fixedly connected to the inner wall of the rectangular groove.
[0013] The beneficial effects of this utility model's multi-station fixture positioning device are as follows: By setting a positioning structure, a circular workpiece is placed on a positioning plate. When it is necessary to clamp its outer circle, it can be placed in the middle of four round rods. Rotating the rotating shaft drives the positioning plate to rotate, causing the round rods to gradually slide inward under the limitation of the arc groove until the four round rods clamp and position the outer circle of the workpiece. When it is necessary to round the inner wall of the workpiece to facilitate the processing of the outer side, the workpiece is placed on the positioning plate, so that the four round rods are located in the hollow part in the middle of the workpiece. Then, the rotating shaft drives the positioning plate to rotate, causing the round rods to slide outward until the workpiece is positioned. There is no need to change the fixture, thus avoiding the situation where a single-function positioning device is difficult to adapt flexibly and requires frequent fixture changes, which not only increases the complexity of operation but also prolongs the equipment downtime, resulting in a reduction in production efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a partial three-dimensional structural diagram of the positioning structure of this utility model;
[0016] Figure 3 This is a partial three-dimensional structural diagram of the positioning disk of this utility model;
[0017] Figure 4 This is a three-dimensional structural diagram of another part of the positioning disk of this utility model;
[0018] Figure 5 This is a three-dimensional structural diagram of another part of the positioning structure of this utility model;
[0019] Figure 6 This utility model Figure 5 Enlarged view of part A in the middle.
[0020] Markings: 1. Base; 2. Fixed platform; 3. Positioning platform; 4. Positioning disc; 5. Positioning structure; 51. Rotating shaft; 52. First gear; 53. Disc gear; 54. Slide groove; 55. Slider; 56. Round rod; 57. Arc groove; 58. Support block; 59. Rubber block; 510. Motor; 511. Second gear; 512. Fixed rod; 6. Compensation structure; 61. Rectangular groove; 62. Slide rod; 63. Arc plate; 64. Rubber pad; 65. Fixed plate; 66. Spring. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0022] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0023] The implementation of this utility model will be described in detail below with reference to specific embodiments.
[0024] In this embodiment:
[0025] Reference Figure 1-2 The diagram shows a preferred embodiment of the present invention.
[0026] This embodiment of a multi-station fixture positioning device includes a base 1, a fixed platform 2 fixedly connected to the base 1, a positioning platform 3 fixedly connected to the fixed platform 2, four positioning discs 4 disposed on the positioning platform 3, and a positioning structure 5 disposed on the base 1. The positioning structure 5 mainly consists of four rotating shafts 51, all of which are rotatably connected to the base 1 via bearings. One end of each rotating shaft 51 is fixedly connected to a positioning disc 4, and the rotating shaft 51 is rotatably connected to the positioning platform 3. The positioning platform 3 has several sliding grooves 54, and sliders 55 are slidably connected in the sliding grooves 54. A round rod 56 is fixedly connected to each slider 55. The positioning discs 4 have four arc-shaped grooves 57. A circular workpiece is placed on the positioning disc 4. When it is necessary to clamp the outer circle of the workpiece, the positioning structure 57 can be adjusted accordingly. It is placed between four round rods 56. Rotating the rotating shaft 51 drives the positioning disk 4 to rotate, so that the round rods 56 gradually slide inward under the limit of the arc groove 57 until the four round rods 56 clamp and position the outer circle of the workpiece. When it is necessary to round the inner wall of the workpiece to facilitate the processing of the outer side, the workpiece is placed on the positioning disk 4, so that the four round rods 56 are located in the hollow part in the middle of the workpiece. Then, the rotating shaft 51 drives the positioning disk 4 to rotate, so that the round rods 56 slide outward until the workpiece is positioned. There is no need to change the fixture, thus avoiding the situation where the positioning device with a single function is difficult to adapt flexibly and requires frequent fixture changes, which not only increases the complexity of operation, but also prolongs the downtime of the equipment and reduces the production efficiency.
[0027] Figure 1-6 A first gear 52 is fixedly connected to the rotating shaft 51 shown. A disc gear 53 is rotatably connected to the fixed platform 2 via bearings. The disc gear 53 meshes with the first gear 52. Rotating the disc gear 53 can drive the first gear 52 to rotate synchronously, thereby driving the four rotating shafts 51 to rotate synchronously. This allows for the synchronous positioning of multiple workpieces. A motor 510 is fixedly connected to the base 1. A second gear 511 is provided on the base 1. The second gear 511 is driven to rotate by the motor 510. The output end of the motor 510 is connected to the second gear 511 via a reducer and a coupling. The model of the motor 510 is 17HS4401. First, the power is turned on to power the control system of the motor 510. Then, starting the motor 510 can drive the second gear 511 to rotate, thereby driving one of the first gears 52 to rotate.
[0028] Figure 1-6The slider 55 shown is fixedly connected to a support block 58, and the support block 58 is fixedly connected to a rubber block 59. When the workpiece is large, the workpiece can be placed on the outside of the four support blocks 58. During the sliding process of the slider 55, the support blocks 58 will slide outward to provide internal support and positioning for larger circular workpieces. The rubber block 59 can increase friction and prevent the support blocks 58 from making rigid contact with the workpiece and causing damage. Four fixing rods 512 are fixedly connected to the base 1. One end of the fixing rod 512 is fixedly connected to the positioning table 3. The four fixing rods 512 support the positioning table 3 to make its position more stable.
[0029] Figure 1-6 The circular rod 56 shown is provided with a compensation structure 6, which is mainly composed of a rectangular groove 61. The rectangular groove 61 is opened on the circular rod 56. Four sliding rods 62 are slidably inserted on the circular rod 56. An arc plate 63 is fixedly connected to two sliding rods 62 on the same side. A rubber pad 64 is fixedly connected to the arc plate 63. When the circular rod 56 positions the workpiece, the sliding rods 62 can slide so that the arc plate 63 fits against the inner or outer wall of the workpiece. This prevents the slight dimensional errors between multiple workpieces from causing unstable positioning of some workpieces. In addition, the rubber pad 64 is squeezed during clamping and positioning, which can compensate for deformation of some slightly irregular positions.
[0030] Figure 1-6 Two fixed plates 65 are fixedly connected in the rectangular groove 61 shown. The fixed plates 65 are slidably connected to the slide rod 62. The slide rod 62 slides at the upper limit of the fixed plate 65, making its sliding process more stable. A spring 66 is sleeved on the slide rod 62. One end of the spring 66 is fixedly connected to the fixed plate 65, and the other end of the spring 66 is fixedly connected to the inner wall of the rectangular groove 61. After the workpiece comes into contact with the arc plate 63, it will push the slide rod 62 to slide inward, so that the spring 66 is in a contracted state. Therefore, the rebound force of the spring 66 acts on the arc plate 63, making the clamping more stable.
[0031] Working principle: A circular workpiece is placed on the positioning disk 4. When it is necessary to clamp the outer circle of the workpiece, it can be placed between the four round rods 56. Rotating the rotating shaft 51 drives the positioning disk 4 to rotate, causing the round rods 56 to gradually slide inward under the limit of the arc groove 57 until the four round rods 56 clamp and position the outer circle of the workpiece. When it is necessary to round the inner wall of the workpiece to facilitate the processing of the outer side, the workpiece is placed on the positioning disk 4, so that the four round rods 56 are located in the hollow part in the middle of the workpiece. Then, the rotating shaft 51 drives the positioning disk 4 to rotate, causing the round rods 56 to slide outward. Until the workpiece is positioned, there is no need to change the fixture, thus avoiding the situation where a single-function positioning device is difficult to adapt flexibly and requires frequent fixture changes, which not only increases the complexity of operation but also prolongs equipment downtime and reduces production efficiency. The rotating disc gear 53 can drive the first gear 52 to rotate synchronously, which in turn drives the four rotating shafts 51 to rotate synchronously, enabling synchronous positioning of multiple workpieces. The output end of the motor 510 is connected to the second gear 511 through a reducer and coupling. The model of the motor 510 is 17HS4401. First, the power is turned on to the motor. When the control system of 510 is powered on, the motor 510 is started, which drives the second gear 511 to rotate, which in turn drives the first gear 52 to rotate. When the workpiece is large, it can be placed on the outside of the four supporting blocks 58. During the sliding of the slider 55, the supporting blocks 58 will slide outward, providing internal support and positioning for larger circular workpieces. The rubber block 59 increases friction and prevents the supporting blocks 58 from rigidly contacting the workpiece and causing damage. The four fixed rods 512 support the positioning table 3, making its position more stable. When the round rod 56 positions the workpiece... The sliding rod 62 allows the arc plate 63 to fit against the inner or outer wall of the workpiece, preventing slight dimensional errors between multiple workpieces from causing unstable positioning of some workpieces. The rubber pad 64 is compressed during clamping and positioning, which can compensate for deformation of some minor irregularities. The sliding rod 62 slides at the upper limit of the fixed plate 65, making its sliding process more stable. After the workpiece comes into contact with the arc plate 63, it will push the sliding rod 62 to slide inward, causing the spring 66 to be in a contracted state. Therefore, the rebound force of the spring 66 acts on the arc plate 63, making the clamping more stable.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A multi-station fixture positioning device comprising a base (1), characterized in that, A fixed platform (2) is fixedly connected to the base (1), a positioning platform (3) is fixedly connected to the fixed platform (2), four positioning discs (4) are provided on the positioning platform (3), a positioning structure (5) is provided on the base (1), the positioning structure (5) is mainly composed of four rotating shafts (51), the four rotating shafts (51) are rotatably connected to the base (1) through bearings, one end of the rotating shaft (51) is fixedly connected to the positioning disc (4), the rotating shaft (51) is rotatably connected to the positioning platform (3), a number of sliding grooves (54) are provided on the positioning platform (3), a slider (55) is slidably connected in the sliding groove (54), a round rod (56) is fixedly connected on the slider (55), and four arc-shaped grooves (57) are provided on the positioning disc (4).
2. The multi-station fixture positioning device of claim 1, wherein: A first gear (52) is fixedly connected to the rotating shaft (51), and a disc gear (53) is rotatably connected to the fixed platform (2) via a bearing. The disc gear (53) and the first gear (52) are meshed together.
3. The multi-station fixture positioning apparatus of claim 2, wherein: A motor (510) is fixedly connected to the base (1), and a second gear (511) is provided on the base (1). The second gear (511) is driven to rotate by the motor (510).
4. The multi-station fixture positioning apparatus of claim 3, wherein: A support block (58) is fixedly connected to the slider (55), and a rubber block (59) is fixedly connected to the support block (58).
5. The multi-station fixture positioning apparatus of claim 4, wherein: Four fixing rods (512) are fixedly connected to the base (1), and one end of the fixing rods (512) is fixedly connected to the positioning platform (3).
6. A multi-station fixture positioning apparatus as claimed in claim 5, wherein: The round rod (56) is provided with a compensation structure (6), which is mainly composed of a rectangular groove (61). The rectangular groove (61) is opened on the round rod (56). Four sliding rods (62) are slidably inserted on the round rod (56). An arc plate (63) is fixedly connected to two sliding rods (62) on the same side. A rubber pad (64) is fixedly connected to the arc plate (63).
7. The multi-station fixture positioning apparatus of claim 6, wherein: Two fixing plates (65) are fixedly connected in the rectangular groove (61), and the fixing plates (65) are slidably connected to the slide rod (62).
8. The multi-station fixture positioning apparatus of claim 7, wherein: A spring (66) is fitted on the slide rod (62). One end of the spring (66) is fixedly connected to the fixing plate (65), and the other end of the spring (66) is fixedly connected to the inner wall of the rectangular groove (61).