Jig floating adjusting device

Abstract

The utility model relates to a jig floating adjusting device which comprises a bottom plate, a positioning plate and a frame, a first guide pin is transversely arranged on the frame in a sliding mode, the first guide pin is fixedly connected with the bottom plate, a second guide pin is longitudinally arranged on the frame in a sliding mode, the second guide pin is fixedly connected with the positioning plate, and adjusting assemblies are arranged between the frame and the positioning plate and between the frame and the bottom plate. Springs are arranged between the adjusting assemblies and the bottom plate and between the adjusting assemblies and the positioning plate, self-adaptive position compensation of parts in the grinding process is achieved through cooperation of transverse sliding guide pins and longitudinal sliding guide pins and spring pre-tightening force, overload pressure generated when a grinding head makes contact with a high point is effectively absorbed, rebounding compensation is conducted on a low-point gap, and the defect of over-grinding or miss-grinding is avoided; the composite design of the guide pin and the spring not only solves the problem of stress concentration caused by part size deviation of a traditional jig, but also eliminates the influence of workpiece installation errors on the machining quality through elastic floating, and the precision consistency of multi-face continuous grinding of the part is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of jig technology, specifically to a jig floating adjustment device. Background Technology

[0002] CNC grinding and polishing equipment is a precision device that uses Computer Numerical Control (CNC) technology to automate surface treatment. Its core feature is achieving high-precision and high-efficiency grinding and polishing operations through programmed control. The worktable of a CNC grinding machine typically employs an inclined design, primarily to reduce backlash in the transmission system through gravity, thereby improving machining accuracy. Simultaneously, the inclined structure facilitates automatic chip removal, preventing chip accumulation and ensuring optimal machining quality.

[0003] Traditional grinding of die-cast parts often uses rigid positioning fixtures, but this approach presents many problems in practical applications. Due to the characteristics of the high-pressure casting process, die-cast parts are prone to burrs, flash, and dimensional deviations on their surface, which can easily lead to insufficient clamping and positioning accuracy. During clamping, the rigid fixture may tilt due to its inability to self-adjust. Grinding a die-cast part in a tilted state results in uneven pressure distribution from the grinding head, causing over-grinding in the high-side areas, leading to dimensional deviations, while the low-side areas may require rework due to insufficient contact. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a jig floating adjustment device.

[0005] The purpose of this utility model can be achieved through the following technical solution: a jig floating adjustment device, including a base plate, a positioning plate, and a frame, a first guide pin is slidably provided on the frame laterally, the first guide pin is fixedly connected to the base plate, a second guide pin is slidably provided on the frame longitudinally, the second guide pin is fixedly connected to the positioning plate, and adjustment components are provided between the frame and the positioning plate and the base plate, and springs are provided between each adjustment component and the base plate and the positioning plate.

[0006] Preferably, the adjustment assembly includes spring plates that are slidably disposed on the first guide pin and the second guide pin respectively, and an adjustment bolt is threadedly connected to the frame at the position corresponding to the spring plate, with one end of the adjustment bolt passing through the frame and abutting against the spring plate.

[0007] Preferably, the adjusting bolt is threaded with a lock nut.

[0008] Preferably, spring holes are provided on the spring pressure plate, positioning plate, and base plate at the positions corresponding to the springs.

[0009] Preferably, the base plate has fixing holes.

[0010] Preferably, the positioning plate has mounting holes and positioning holes.

[0011] Preferably, limit holes are provided on the spring pressure plate at the positions corresponding to the adjusting bolts.

[0012] The beneficial effects of this invention are as follows: By using transverse and longitudinal sliding guide pins in conjunction with spring preload, adaptive position compensation of the part is achieved during the grinding process. This effectively absorbs the overload pressure when the grinding head contacts the high point and rebounds to compensate for the gap at the low point, avoiding over-grinding or under-grinding defects. The composite design of the guide pin and spring not only solves the stress concentration problem caused by part size deviations in traditional fixtures, but also eliminates the impact of workpiece installation errors on processing quality through elastic floating, significantly improving the accuracy consistency of multi-faceted continuous grinding of parts. Attached Figure Description

[0013] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a floating adjustment device for a fixture according to the present invention.

[0015] Figure 2 This is a cross-sectional view of a floating adjustment device for a fixture according to the present invention.

[0016] Figure 3 This is a schematic diagram of the base plate structure of a floating adjustment device for a fixture according to this utility model.

[0017] Figure 4 This is a schematic diagram of the positioning plate structure of a floating adjustment device for a fixture according to this utility model.

[0018] Figure 5 This is a schematic diagram of the frame structure of a floating adjustment device for a fixture according to the present invention.

[0019] The labels in the diagram represent: 1. Base plate; 2. Positioning plate; 3. Frame; 4. First guide pin; 5. Second guide pin; 6. Adjustment assembly; 601. Spring pressure plate; 602. Adjusting bolt; 603. Locking nut; 604. Limiting hole; 7. Spring; 8. Fixing hole; 9. Positioning hole; 10. Mounting hole. Detailed Implementation

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] See Figures 1 to 5As shown, the structure of this utility model is as follows: a jig floating adjustment device includes a base plate 1, a positioning plate 2, and a frame 3. A first guide pin 4 is slidably mounted on the frame 3 and is fixedly connected to the base plate 1. A second guide pin 5 is slidably mounted on the frame 3 and is fixedly connected to the positioning plate 2. Adjustment components 6 are provided between the frame 3 and the positioning plate 2 and the base plate 1. Springs 7 are provided between each adjustment component 6 and the base plate 1 and the positioning plate 2. Specifically, the base plate 1 is mounted on the inclined worktable of the grinding machine. After grinding one surface, the worktable can be rotated to grind another surface. The part is mounted on the positioning plate 2 by the jig. The first guide pin 4 allows the frame 3 to move laterally along the base plate 1, and the second guide pin 5 allows the positioning plate 2 to move longitudinally along the frame 3. At the same time, the corresponding springs 7 apply a certain preload to the frame 3 and the positioning plate 2. When the workpiece has a height error due to positioning deviation, the part mounted on the positioning plate 2 can adaptively float under the action of the springs 7, allowing zero... The workpiece moves within a certain range to compensate for positioning deviations. For example, when the grinding head grinds to the high point of one surface of the workpiece, the pressure of the grinding head pushes the positioning plate 2 to slide along the second guide pin 5, and the compression of the spring 7 absorbs overload force to avoid over-grinding. When the grinding head contacts the low point of the workpiece, the spring 7 rebounds and pushes the positioning plate 2 to move in the opposite direction, ensuring that the grinding head contacts the low point of the workpiece and eliminating missed grinding. When adjacent surfaces need to be ground, the worktable rotates 90 degrees, the grinding head starts working, and after the grinding head contacts the high point of the second surface of the workpiece, the pressure of the grinding head pushes the frame 3 to slide along the first guide pin 4, and the compression of the spring 7 absorbs overload force to avoid over-grinding. When the grinding head contacts the low point of the workpiece, the spring 7 rebounds and pushes the frame 3 to move in the opposite direction, ensuring that the grinding head contacts the low point of the workpiece and thus eliminating missed grinding. The adjusting component 6 controls the floating resistance in each direction by adjusting the preload of the spring 7. Increasing the preload can improve the positioning rigidity and reduce the displacement amplitude of the workpiece; decreasing the preload enhances the self-adaptive ability of the workpiece.

[0024] like Figure 2 As shown, the adjustment assembly 6 includes a spring 7 pressure plate 601 that is slidably mounted on the first guide pin 4 and the second guide pin 5 respectively. An adjustment bolt 602 is threadedly connected to the frame 3 at the position corresponding to the spring 7 pressure plate 601. One end of the adjustment bolt 602 passes through the frame 3 and abuts against the spring 7 pressure plate 601. Specifically, tightening the adjustment bolt 602 can further compress the spring 7 through the spring 7 pressure plate 601, thereby improving the positioning rigidity and reducing the displacement of the part. Loosening the adjustment bolt 602 can relax the spring 7 and increase the floating amount of the part during grinding.

[0025] like Figure 2 , Figure 5As shown, a locking nut 603 is threaded onto the adjusting bolt 602. Specifically, the locking nut 603 is used to lock the adjusting bolt 602 to prevent it from loosening due to vibration or other factors during grinding.

[0026] Furthermore, spring 7 holes are provided on the pressure plate 601, positioning plate 2, and base plate 1 at positions corresponding to spring 7. Specifically, the ends of spring 7 are fixed through spring 7 holes to prevent spring 7 from shifting or bending when it moves, thereby improving the connection strength.

[0027] like Figure 3 As shown, the base plate 1 has a fixing hole 8 for fixing the base plate 1 to the workbench.

[0028] like Figure 4 As shown, the positioning plate 2 has mounting holes 10 and positioning holes 9. The positioning holes 9 are used to position the fixture to ensure the installation accuracy of the fixture, and the mounting holes 10 are used to fix the fixture.

[0029] like Figure 3 , Figure 4 As shown, limit holes 604 are provided on the spring 7 pressure plate 601 at the positions corresponding to the adjusting bolts 602. Specifically, the limit holes 604 are used to improve the stability of the adjusting bolts 602 abutting.

[0030] In practical use, the base plate 1 is installed on the inclined worktable of the grinder. After grinding one surface, the worktable can be rotated to grind another surface. The part is mounted on the positioning plate 2 by a fixture. When the grinding head grinds to the high point of one surface of the part, the pressure of the grinding head pushes the positioning plate 2 to slide along the second guide pin 5, and the spring 7 is compressed to absorb the overload force and avoid over-grinding. When the grinding head contacts the low point of the part, the spring 7 rebounds and pushes the positioning plate 2 to move in the opposite direction to ensure that the grinding head contacts the low point of the part and eliminates missed grinding. When it is necessary to grind adjacent surfaces, the worktable is rotated 90 degrees and the grinding head starts to work. After the grinding head contacts the high point of the second surface of the part, the pressure of the grinding head pushes the frame 3 to slide along the first guide pin 4, and the spring 7 is compressed to absorb the overload force and avoid over-grinding. When the grinding head contacts the low point of the part, the spring 7 rebounds and pushes the frame 3 to move in the opposite direction to ensure that the grinding head contacts the low point of the part and eliminates missed grinding.

[0031] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A jig floating adjustment device characterized by comprising: The utility model relates to a kind of frame adjusting device, including bottom plate (1), positioning plate (2), frame (3), the first guide pin (4) is slidably arranged on the frame (3) transversely, the first guide pin (4) is fixedly connected with bottom plate (1), the second guide pin (5) is slidably arranged on the frame (3) longitudinally, the second guide pin (5) is fixedly connected with positioning plate (2), adjusting assembly (6) is equipped between the frame (3) and positioning plate (2), bottom plate (1), each adjusting assembly (6) is equipped with spring (7) between bottom plate (1), positioning plate (2).

2. The jig floating adjustment device according to claim 1, characterized by: The adjusting assembly (6) includes spring (7) pressing plate (601) that is slidably arranged on the first guide pin (4), the second guide pin (5) respectively, the position of spring (7) pressing plate (601) is screw-connected with adjusting bolt (602) on the frame (3), and the end of adjusting bolt (602) passes through frame (3) and is abutted with spring (7) pressing plate (601).

3. The fixture floating adjustment device of claim 2, wherein: The adjusting bolt (602) is screw-connected with locking nut (603).

4. The fixture floating adjustment device of claim 2, wherein: The position of adjusting bolt (602) is all set with limiting hole (604) on spring (7) pressing plate (601).

5. The fixture floating adjustment device of claim 1, wherein: The position of spring (7) is all set with spring (7) hole on spring (7) pressing plate (601), positioning plate (2), bottom plate (1).

6. The fixture floating adjustment device of claim 1, wherein: The fixed hole (8) is set on the bottom plate (1).

7. The fixture floating adjustment device of claim 1, wherein: The mounting hole (10) and the positioning hole (9) are set on the positioning plate (2).

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