Adjustable positioning jig assembly

Abstract

The utility model relates to mechanical processing auxiliary equipment technical field discloses adjustable positioning fixture assembly, including bottom plate, the lower end middle part of bottom plate is fixedly connected with frame, the lower end of frame is provided with servo motor, the output of servo motor is equipped with gear, the upper end both sides of bottom plate all are connected with support frame, the lower end of two support frames all is fixedly connected with rack, two rack all are in the lower end of bottom plate and are connected with gear meshing, the upper end of two support frames all is provided with locating block, one side of two support frames end face one side all is fixedly connected with connecting shell and rotating cylinder. In the utility model, through servo motor drive gear rack, realize locating block high accuracy synchronous movement, combine T type sliding slot and spring quick -adjusting mechanism, has realized the convenient adjustment and quick disassembly of locating block, this fixture effectively improved the positioning accuracy, clamping efficiency and maintenance convenience, reduced the labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for machining, and in particular to an adjustable positioning fixture assembly. Background Technology

[0002] In industrial production processes such as machining, automated assembly, and quality inspection, positioning fixtures are key equipment for ensuring workpiece positioning accuracy and guaranteeing machining quality. A high-performance positioning fixture should not only firmly clamp the workpiece but also have the ability to be quickly adjusted and easily changed to adapt to the production needs of products with different specifications, thereby improving overall production efficiency.

[0003] However, existing positioning fixtures generally have two major drawbacks: First, the clamping process relies heavily on manual operation, resulting in low efficiency, high labor intensity, and unstable positioning accuracy; second, the replacement and adjustment of positioning blocks is cumbersome and often requires the use of special tools, which seriously prolongs the line changeover and debugging time and restricts the continuity of production.

[0004] Therefore, those skilled in the art have provided adjustable positioning fixture assemblies to address the problems mentioned in the background section. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an adjustable positioning fixture assembly. By driving the gear rack with a servo motor, the positioning block can be moved synchronously with high precision. Combined with the T-shaped slide and spring quick-adjustment mechanism, the positioning block can be conveniently adjusted and quickly assembled and disassembled. This fixture effectively improves positioning accuracy, clamping efficiency and maintenance convenience, and reduces labor intensity.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable positioning fixture assembly includes a base plate, a frame fixedly connected to the lower middle of the base plate, a servo motor provided at the lower end of the frame, a gear sleeved at the output end of the servo motor, support frames slidably connected to both sides of the upper end of the base plate, racks fixedly connected to the lower ends of the two support frames, and the two racks located at the lower end of the base plate and meshing with the gears.

[0008] Both support frames are provided with positioning blocks at their upper ends. A connecting shell and a rotating cylinder are fixedly connected to one side of each of the two support frames. A rotating rod is rotatably connected inside each of the two rotating cylinders. A limit block is fixedly connected to one end of each of the two rotating rods. A sliding rod is fixedly connected inside each of the two connecting shells. A spring is sleeved on the lower outer end of each of the two sliding rods. A connecting plate is fixedly connected to the upper end of each of the two springs. A limit rod is fixedly connected to the lower end of each of the two connecting plates. Both limit rods extend into the interior of the rotating rod.

[0009] Through the above technical solution, the positioning block can be moved synchronously with high precision by driving the gear rack with a servo motor. Combined with the T-shaped slide and spring quick-adjustment mechanism, the positioning block can be conveniently adjusted and quickly disassembled. This fixture effectively improves positioning accuracy, clamping efficiency and maintenance convenience, and reduces labor intensity.

[0010] Furthermore, guide grooves are provided on both sides of the interior of the base plate, and guide blocks are fixedly connected to both sides of the lower end of the two support frames. Each guide block is embedded in the corresponding guide groove and is slidably connected to the guide groove.

[0011] Through the above technical solution, the sliding cooperation between the guide block and the guide groove provides precise linear guidance for the movement of the support frame, effectively preventing it from deflecting or shaking during movement, thereby ensuring that the positioning blocks on both sides can always remain parallel and synchronized, further improving the stability and accuracy of workpiece positioning.

[0012] Furthermore, a T-shaped slider is fixedly connected to the upper end of each of the two support frames, and a T-shaped groove is provided at the lower end of each of the two positioning blocks. The positioning blocks slide in cooperation with the T-shaped sliders through the T-shaped grooves.

[0013] Through the above technical solution, the positioning block can be quickly installed and removed from the support frame by sliding cooperation between the T-shaped groove and the T-shaped slider. Operators can replace the positioning block without using tools, which greatly improves the maintenance convenience of the fixture and the production line changeover efficiency.

[0014] Furthermore, guide rails are fixedly connected to both sides of the lower end of the base plate, and sliders are fixedly connected to one side of each of the two racks, with the two sliders slidably mounted on the corresponding guide rails.

[0015] Through the above technical solution, the sliding connection between the slider and the guide rail provides stable and reliable support and guidance for the reciprocating motion of the rack, shares the radial force generated by gear meshing, reduces wear, ensures the transmission accuracy and service life of the drive system, and ensures smooth and stable clamping action.

[0016] Furthermore, a protective gasket is fixedly connected to the side surface of the positioning block facing the workpiece, and the protective gasket is made of rubber or polyurethane material;

[0017] By using the above technical solution, a protective pad made of flexible materials such as rubber or polyurethane is set on the surface of the positioning block that contacts the workpiece. This can effectively clamp the workpiece while avoiding scratches, indentations and other damage to the workpiece surface caused by rigid contact, thus playing a good protective role and ensuring the processing quality of the workpiece.

[0018] Furthermore, a support plate is fixedly connected to the upper center of the base plate;

[0019] Through the above technical solution, the support plate set in the middle of the upper part of the base plate can be used to provide auxiliary support for the bottom or middle of the workpiece, which enhances the overall stability of the workpiece in the clamping state, effectively prevents bending deformation caused by excessive length or weight of the workpiece, and ensures the requirements of high-precision processing.

[0020] Furthermore, connecting flanges are fixedly connected to the four corners of the lower end of the base plate;

[0021] The above technical solution provides a standard and stable installation interface for the entire fixture assembly by setting the connecting flanges at the four corners of the lower end of the base plate. This allows for convenient and quick reliable connection and fixation with machine tool worktables, automated production lines or other equipment platforms, ensuring the overall rigidity of the fixture during operation.

[0022] This utility model has the following beneficial effects:

[0023] 1. The adjustable positioning fixture assembly proposed in this utility model uses a drive system consisting of a servo motor, gears and racks, combined with guide grooves and guide rails on the base plate for composite guidance. This enables the positioning blocks on both sides to move synchronously with high precision and high stability, effectively avoiding offset and jamming, improving the positioning accuracy and clamping efficiency of the workpiece, providing a reliable guarantee for subsequent processing, and reducing the labor intensity of operators.

[0024] 2. The adjustable positioning fixture assembly proposed in this utility model, through the setting of T-shaped sliders and T-shaped grooves, enables its positioning block to be quickly and stably connected to the support frame, realizing convenient lateral position adjustment. At the same time, through the spring-loaded cooperation of the limiting block and the limiting rod, the positioning block can be effectively limited after adjustment to ensure its working stability. When maintenance or replacement is required, it can be quickly disassembled by simply pulling the limiting rod and rotating the rotating rod, which improves the modularity, maintenance convenience and production line changeover efficiency of the entire fixture. Attached Figure Description

[0025] Figure 1 This is an orthographic view of the adjustable positioning fixture assembly proposed in this utility model.

[0026] Figure 2 This is a side axonometric view of the adjustable positioning fixture assembly proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the gear and rack connection of the adjustable positioning fixture assembly proposed in this utility model;

[0028] Figure 4Axonometric view of the sliding frame and positioning block of the adjustable positioning fixture assembly proposed in this utility model;

[0029] Figure 5 This is a schematic diagram showing the unfolded sliding frame and positioning block of the adjustable positioning fixture assembly proposed in this utility model;

[0030] Figure 6 This is an isometric view of the limiting block of the adjustable positioning fixture assembly proposed in this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Base plate; 2. Frame; 3. Servo motor; 4. Gear; 5. Support frame; 6. Rack; 7. Slider; 8. Guide rail; 9. Positioning block; 10. T-shaped slide; 11. T-shaped slider; 12. Guide block; 13. Guide groove; 14. Support plate; 15. Connecting flange; 16. Rotating cylinder; 17. Rotating rod; 18. Limiting block; 19. Connecting shell; 20. Sliding rod; 21. Spring; 22. Connecting plate; 23. Limiting rod. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Reference Figure 1-6 This utility model provides a specific implementation method:

[0035] An adjustable positioning fixture assembly includes a base plate 1, a frame 2 fixedly connected to the lower middle of the base plate 1, a servo motor 3 provided at the lower end of the frame 2, a gear 4 sleeved at the output end of the servo motor 3, and support frames 5 slidably connected to both sides of the upper end of the base plate 1. A rack 6 is fixedly connected to the lower end of both support frames 5, and both racks 6 are located at the lower end of the base plate 1 and mesh with the gear 4.

[0036] A positioning block 9 is provided at the upper end of each of the two support frames 5. A connecting shell 19 and a rotating cylinder 16 are fixedly connected to one side of each of the two support frames 5. A rotating rod 17 is rotatably connected inside each of the two rotating cylinders 16. A limit block 18 is fixedly connected to one end of each of the two rotating rods 17. A sliding rod 20 is fixedly connected inside each of the two connecting shells 19. A spring 21 is sleeved on the lower end of each of the two sliding rods 20. A connecting plate 22 is fixedly connected to the upper end of each of the two springs 21. A limit rod 23 is fixedly connected to the lower end of each of the two connecting plates 22. Both limit rods 23 extend into the interior of the rotating rod 17.

[0037] The positioning block 9 is moved synchronously with high precision by the servo motor 3 driving the gear 4 and rack 6. Combined with the T-shaped slide 10 and the spring 21 quick adjustment mechanism, the positioning block 9 can be conveniently adjusted and quickly disassembled. This fixture effectively improves the positioning accuracy, clamping efficiency and maintenance convenience, and reduces labor intensity.

[0038] Guide grooves 13 are provided on both sides of the interior of the base plate 1. Guide blocks 12 are fixedly connected to the lower ends of the two support frames 5. Each guide block 12 is embedded in the corresponding guide groove 13 and is slidably connected to the guide groove 13. The sliding cooperation between the guide block 12 and the guide groove 13 provides precise linear guidance for the movement of the support frame 5, effectively preventing it from deflecting or shaking during movement. This ensures that the positioning blocks 9 on both sides can always remain parallel and synchronized, further improving the stability and accuracy of workpiece positioning. T-shaped sliders 11 are fixedly connected to the upper ends of the two support frames 5, and T-shaped sliders 11 are provided at the lower ends of the two positioning blocks 9. The T-shaped slide groove 10 and the positioning block 9 slide in conjunction with the T-shaped slider 11, enabling quick installation and removal on the support frame 5. Operators can replace the positioning block 9 without tools, greatly improving fixture maintenance convenience and production line changeover efficiency. Guide rails 8 are fixedly connected to both sides of the lower end of the base plate 1, and sliders 7 are fixedly connected to one side of each of the two racks 6. The two sliders 7 are slidably mounted on their respective guide rails 8. The sliding connection between the sliders 7 and the guide rails 8 provides stable and reliable support and guidance for the reciprocating motion of the racks 6. The radial force generated by the meshing of gear 4 is distributed to the positioning block 9, reducing wear and ensuring the transmission accuracy and service life of the drive system. This also ensures smooth and stable clamping. A protective gasket is fixedly connected to the workpiece-facing side of the positioning block 9. The protective gasket is made of rubber or polyurethane. This flexible material, rubber or polyurethane, is used on the surface of the positioning block 9 that contacts the workpiece. This effectively clamps the workpiece while preventing scratches, indentations, and other damage to the workpiece surface from rigid contact, providing good protection and ensuring the workpiece's processing quality. A support plate 14 is fixedly connected to the upper center of the base plate 1. The support plate 14 located at the upper center of plate 1 can be used to provide auxiliary support for the bottom or middle of the workpiece, enhancing the overall stability of the workpiece in the clamping state and effectively preventing bending deformation caused by excessive workpiece length or weight, thus ensuring the requirements of high-precision machining. Connecting flanges 15 are fixedly connected at the four corners of the lower end of the base plate 1. The connecting flanges 15 located at the four corners of the lower end of the base plate 1 provide a standard and stable installation interface for the entire fixture assembly, enabling it to be conveniently and quickly reliably connected and fixed to the machine tool worktable, automated production line or other equipment platform, ensuring the overall rigidity of the fixture during operation.

[0039] Working Principle: During use, firstly, in the automatic clamping stage, the external control system starts the servo motor 3, and the gear 4 on the motor output shaft rotates accordingly, meshing with the racks 6 symmetrically arranged on both sides. To ensure absolute smoothness and precision in the transmission process, the racks 6 are strictly confined to slide on the guide rail 8 by the slider 7 at the bottom. At the same time, the guide block 12 below the support frame 5 connected to the rack 6 also moves synchronously within the guide groove 13 of the base plate 1. This composite guiding mechanism formed by the guide rail 8 and the guide groove 13 effectively eliminates transmission gaps and lateral forces, ensuring that the two support frames 5 can move synchronously towards or away from each other with high precision and high stability, thereby driving the positioning block 9 on them to achieve precise and rapid clamping or release of the workpiece.

[0040] Secondly, when adapting to workpieces of different specifications or performing maintenance, the positioning block 9 slides with the T-shaped slide groove 10 at its lower end and the T-shaped slider 11 at the upper end of the support frame 5. Operators can easily slide the positioning block 9 laterally to the predetermined position without any tools to accommodate workpieces of different specifications. Once adjusted, the operator only needs to rotate the rotating rod 17 to rotate the limiting block 18 to the limiting position of the positioning block 9. Simultaneously, the limiting rod 23, under the elastic force of the spring 21, automatically extends into the interior of the rotating rod 17, locking the rotating rod 17, thus forming a double lock on the positioning block 9, ensuring its absolute stability during operation. When the positioning block 9 needs to be replaced, simply reverse the rotation rod 17 to release the locks of the limiting block 18 and the limiting rod 23, allowing the positioning block 9 to be quickly removed from the T-shaped slider 11. The entire process is efficient and convenient.

[0041] The following points should be noted in this article:

[0042] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0043] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. An adjustable positioning fixture assembly, comprising a base plate (1), characterized in that: A frame (2) is fixedly connected to the lower middle part of the base plate (1). A servo motor (3) is provided at the lower end of the frame (2). A gear (4) is sleeved on the output end of the servo motor (3). Support frames (5) are slidably connected to both sides of the upper end of the base plate (1). A rack (6) is fixedly connected to the lower end of the two support frames (5). The two racks (6) are located at the lower end of the base plate (1) and mesh with the gear (4). The upper ends of the two support frames (5) are provided with positioning blocks (9). One side of the two support frames (5) is fixedly connected to a connecting shell (19) and a rotating cylinder (16). The interior of the two rotating cylinders (16) is rotatably connected to a rotating rod (17). One end of the two rotating rods (17) is fixedly connected to a limiting block (18). The interior of the two connecting shells (19) is fixedly connected to a sliding rod (20). The lower ends of the two sliding rods (20) are fitted with springs (21). The upper ends of the two springs (21) are fixedly connected to a connecting plate (22). The lower ends of the two connecting plates (22) are fixedly connected to a limiting rod (23). The two limiting rods (23) extend into the interior of the rotating rods (17).

2. The adjustable positioning fixture assembly according to claim 1, characterized in that: The bottom plate (1) has guide grooves (13) on both sides inside. The two support frames (5) are fixedly connected to guide blocks (12) on both sides of the lower end. Each guide block (12) is embedded in the corresponding guide groove (13) and is slidably connected to the guide groove (13).

3. The adjustable positioning fixture assembly according to claim 1, characterized in that: The upper ends of the two support frames (5) are fixedly connected with T-shaped sliders (11), and the lower ends of the two positioning blocks (9) are provided with T-shaped grooves (10). The positioning blocks (9) slide with the T-shaped sliders (11) through the T-shaped grooves (10).

4. The adjustable positioning fixture assembly according to claim 1, characterized in that: The bottom plate (1) is fixedly connected to guide rails (8) on both sides, and the two racks (6) are fixedly connected to sliders (7) on one side. The two sliders (7) are slidably set on the corresponding guide rails (8).

5. The adjustable positioning fixture assembly according to claim 1, characterized in that: The positioning block (9) has a protective pad fixedly connected to the side surface facing the workpiece. The protective pad is made of rubber or polyurethane material.

6. The adjustable positioning fixture assembly according to claim 1, characterized in that: A support plate (14) is fixedly connected to the upper middle part of the base plate (1).

7. The adjustable positioning fixture assembly according to claim 1, characterized in that: Connecting flanges (15) are fixedly connected to the four corners of the lower end of the base plate (1).

Images