Liquid abrasive finishing jig

Abstract

The present application relates to a kind of liquid abrasive finishing clamp.The present application includes clamp sleeve, is connected with driving spindle, and clamp sleeve is driven around first axis of rotation by driving spindle;Clamp body is arranged in the axial side of clamp sleeve, and clamp body includes ring and the core mould arranged in ring, ring is provided with clamping structure, and clamping structure is used to fix the workpiece to be processed between core mould and the inner wall of ring, to form abrasive drainage gap between the processing surface of workpiece to be processed and core mould;Driving structure is connected between clamp sleeve and clamp body, for driving clamp body rotates around second axis;First axis is perpendicular to the central axis of clamp sleeve, and second axis is parallel or coincides with the central axis of clamp sleeve, and the central axis of ring is perpendicular to second axis.The present application can guarantee the processing quality under the premise of not damaging the original shape of workpiece, so that abrasive can fully scratch workpiece surface, and can meet the processing requirements of workpiece with thin wall and curved surface.

Description

Technical Field

[0001] This invention relates to the field of finishing technology, and in particular to a liquid abrasive finishing fixture. Background Technology

[0002] In recent years, abrasive finishing technology has significantly reduced workpiece roughness and successfully improved the surface quality of many hard-to-machine surfaces.

[0003] However, commonly used abrasive flow machining tools typically apply pressure within a closed cavity to allow the abrasive to rub against the cavity to achieve polishing. For workpieces with thin walls and curved surfaces, the pressure is too high during processing, making it difficult to control the pressure on the workpiece and causing it to deform, thus failing to meet polishing requirements. Summary of the Invention

[0004] To address the problems of uncontrollable pressure and easy deformation of workpieces with complex curved surfaces, this invention provides a liquid abrasive finishing fixture with a flow-guiding and pressure-regulating structure, which enables the workpiece to withstand controllable pressure and is not easily deformed. Under the premise of ensuring processing quality, the original shape of the workpiece is not damaged, and the processing requirements of workpieces with thin walls and curved surfaces can be met.

[0005] To address the aforementioned technical problems, this invention provides a liquid abrasive finishing fixture for connection to the spindle of a liquid abrasive finishing device. The liquid abrasive finishing fixture comprises:

[0006] A clamping sleeve is connected to the drive spindle, and the drive spindle drives the clamping sleeve to rotate around a first axis.

[0007] The fixture body is located on one axial side of the fixture sleeve. The fixture body includes a ring sleeve and a core mold located inside the ring sleeve. The ring sleeve is provided with a clamping structure for fixing the workpiece to be processed between the core mold and the inner sidewall of the ring sleeve, so that an abrasive flow gap is formed between the processing surface of the workpiece to be processed and the core mold.

[0008] A drive structure, which is connected between the clamp sleeve and the clamp body, is used to drive the clamp body to rotate around the second axis;

[0009] Wherein, the first axis is perpendicular to the central axis of the clamp sleeve, the second axis is parallel to or coincides with the central axis of the clamp sleeve, and the central axis of the ring is perpendicular to the second axis.

[0010] In one embodiment of the present invention, a clamping ring extends from one axial end of the clamping sleeve. The clamping ring includes a pair of clamping half-rings. Each clamping half-ring has a connecting plate at one radial end. The drive spindle passes through the clamping ring and clamps the pair of clamping half-rings to the drive spindle through the connecting plate.

[0011] In one embodiment of the present invention

[0012] The drive structure includes a drive motor, and a drive rod extending along the radial outer side wall of the ring and connected to the output shaft of the drive motor.

[0013] In one embodiment of the present invention, the clamp sleeve is provided with a receiving groove at the other end of the axial direction, and a sleeve cover for sealing the receiving groove is connected to the clamp sleeve. The drive motor is disposed in the receiving groove, and the output shaft of the drive motor passes through the sleeve cover and is connected to the drive rod.

[0014] In one embodiment of the present invention, the clamping structure includes through holes distributed circumferentially on the ring sleeve and a clamping member connected to the through holes, one end of the clamping member being clamped against the outer side wall of the workpiece being processed.

[0015] In one embodiment of the present invention, the through hole includes a threaded hole, and the clamping member includes a screw.

[0016] In one embodiment of the present invention, a connecting rib is provided between the core mold and the inner sidewall of the ring sleeve.

[0017] In one embodiment of the present invention, the processed workpiece includes a thin-walled annular workpiece.

[0018] In one embodiment of the present invention, the core mold is a cylindrical structure, and the core mold and the ring are concentrically arranged.

[0019] In one embodiment of the present invention, the abrasive guide gap is 1.5±0.2mm.

[0020] The technical solution of the present invention has the following advantages compared with the prior art:

[0021] This invention discloses a liquid abrasive finishing fixture with a flow-guiding and pressure-regulating structure. By adjusting the spindle speed and the fixture body's rotation speed, the fixture sleeve rotates around a first axis, and the fixture body rotates around a second axis. A corresponding mandrel guides the abrasive flow across the workpiece's surface, making the abrasive flow rate controllable. This allows for adjustment of the pressure applied to the workpiece's surface, meeting the workpiece's processing pressure requirements and achieving uniform and consistent material removal, resulting in high surface quality. This invention can preserve the workpiece's original shape while ensuring processing quality, allowing the abrasive to fully abrade the workpiece surface. It meets the processing requirements of thin-walled and curved workpieces, providing a feasible approach for finishing key components in aerospace, medical, and other fields. Attached Figure Description

[0022] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] Figure 1 This is an exploded structural diagram of the liquid abrasive finishing fixture of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of the liquid abrasive finishing fixture of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the fixture body and the workpiece to be processed according to the present invention.

[0026] Figure 4 This is a structural schematic diagram of one side of the clamp body of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the other side of the clamp body of the present invention.

[0028] Explanation of reference numerals in the instruction manual:

[0029] 100. Workpiece to be processed;

[0030] 1. Clamp sleeve; 11. Clamping half ring; 12. Connecting plate; 13. Receiving groove; 14. Sleeve cover;

[0031] 2. Fixture body; 20. Abrasive drainage gap; 21. Ring sleeve; 211. Through hole; 22. Core mold; 23. Clamping structure; 24. Drive rod; 25. Connecting rib;

[0032] 3. Drive structure; 31. Drive motor. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0034] In this invention, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this invention, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0035] In this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number. In the description of this invention, the terms "first" and "second" are used only to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention based on the specific content of the technical solution.

[0037] Reference Figures 1 to 5 As shown, the present invention provides a liquid abrasive finishing fixture for connection to the spindle of a liquid abrasive finishing device. The liquid abrasive finishing fixture includes:

[0038] The clamp sleeve 1 is connected to the drive spindle, and the drive spindle drives the clamp sleeve 1 to rotate around the first axis.

[0039] The fixture body 2 is disposed on one axial side of the fixture sleeve 1. The fixture body 2 includes a ring sleeve 21 and a core mold 22 disposed inside the ring sleeve 21. The ring sleeve 21 is provided with a clamping structure 23. The clamping structure 23 is used to fix the workpiece 100 to be processed between the core mold 22 and the inner sidewall of the ring sleeve 21, so that an abrasive guiding gap 20 is formed between the processing surface of the workpiece 100 to be processed and the core mold 22.

[0040] The driving structure 3 is connected between the clamp sleeve 1 and the clamp body 2, and is used to drive the clamp body 2 to rotate around the second axis;

[0041] Wherein, the first axis is perpendicular to the central axis of the clamp sleeve 1, the second axis is parallel to or coincides with the central axis of the clamp sleeve 1, and the central axis of the ring sleeve 21 is perpendicular to the second axis.

[0042] Using the above settings, by adjusting the spindle speed and the rotation speed of the fixture body 2, the fixture sleeve 1 rotates around the first axis and the fixture body 2 rotates around the second axis. By setting the corresponding core mold 22 to guide the abrasive flow through the processing surface of the workpiece 100, the abrasive flow rate is controllable, thereby adjusting the pressure applied to the workpiece processing surface to meet the processing pressure requirements of the workpiece, achieving uniformity and consistency of material removal from the workpiece surface, and obtaining higher surface quality.

[0043] Specifically, a clamping ring extends from one axial end of the clamp sleeve 1. The clamping ring includes a pair of clamping half-rings 11, and each clamping half-ring 11 has a connecting plate 12 at one radial end. The drive spindle passes through the clamping ring, and the pair of clamping half-rings 11 are clamped to the drive spindle by the connecting plate 12. With the above arrangement, the entire fixture is connected and fixed to the machine spindle through the clamping ring, and multiple combined fixtures can be connected to the spindle at the same time to realize the one-time processing of multiple different parts.

[0044] Specifically, the drive structure 3 includes a drive motor 31, and a drive rod 24 extending along the radial outer side wall of the ring 21 and connected to the output shaft of the drive motor 31; in this embodiment, the drive motor 31 is a micro motor.

[0045] In some embodiments, the clamp sleeve 1 has a receiving groove 13 at the other end of the axial direction, and a sleeve cover 14 for sealing the receiving groove 13 is connected to the clamp sleeve 1. The drive motor 31 is located in the receiving groove 13, and the output shaft of the drive motor 31 passes through the sleeve cover 14 and is connected to the drive rod 24.

[0046] Specifically, the clamping structure 23 includes a through hole 211 distributed circumferentially on the ring sleeve 21 and a clamping member connected to the through hole 211. One end of the clamping member is clamped against the outer side wall of the workpiece being processed. In this embodiment, the through hole 211 includes a threaded hole, and the clamping member includes a screw.

[0047] Specifically, a connecting rib 25 connects the core mold 22 to the inner wall of the ring sleeve 21; it is understood that the width of the connecting rib 25 should be relatively narrow to facilitate the passage of abrasive; the workpiece to be processed includes a thin-walled annular workpiece, the core mold 22 is a cylindrical structure, and the core mold 22 and the ring sleeve 21 are concentrically arranged. The workpiece 100 to be processed is placed at the center of the ring sleeve 21 and fixed by screws, which can completely position the workpiece 100 to be processed, so that it can fully contact the abrasive during the polishing process.

[0048] Specifically, the abrasive guide gap 20 is 1.5±0.2mm, preferably 1.5mm.

[0049] In practical use, the spindle of the liquid abrasive finishing equipment is inserted axially into an abrasive tank containing liquid abrasive. Driven by the spindle and the drive motor 31, the clamp sleeve 1 rotates around the first axis and the clamp body 2 rotates around the second axis. By setting a corresponding mandrel 22, the abrasive is guided to flow across the processing surface of the workpiece 100, making the abrasive flow rate controllable. This allows for adjustment of the pressure applied to the workpiece processing surface, thereby meeting the processing pressure requirements of the workpiece and achieving uniformity and consistency of material removal from the workpiece surface, resulting in a high surface quality. This invention can ensure processing quality without damaging the original shape of the workpiece, allowing the abrasive to fully scratch the workpiece surface, and can meet the processing requirements of workpieces with thin walls and curved surfaces.

[0050] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A liquid abrasive finishing fixture, for connection to the drive spindle of a liquid abrasive finishing device, characterized in that, The liquid abrasive finishing fixture includes: The clamp sleeve (1) is connected to the drive spindle, and the drive spindle drives the clamp sleeve (1) to rotate around the first axis. The fixture body (2) is located on one axial side of the fixture sleeve (1). The fixture body (2) includes a ring sleeve (21) and a core mold (22) located inside the ring sleeve (21). The ring sleeve (21) is provided with a clamping structure (23). The clamping structure (23) is used to fix the workpiece (100) to be processed between the core mold (22) and the inner sidewall of the ring sleeve (21), so that an abrasive flow gap (20) is formed between the processing surface of the workpiece (100) and the core mold (22). A drive structure (3) is connected between the clamp sleeve (1) and the clamp body (2) for driving the clamp body (2) to rotate around the second axis; Wherein, the first axis is perpendicular to the central axis of the clamp sleeve (1), the second axis is parallel to or coincides with the central axis of the clamp sleeve (1), and the central axis of the ring sleeve (21) is perpendicular to the second axis.

2. The liquid abrasive finishing fixture according to claim 1, characterized in that, The clamping sleeve (1) has a clamping ring extending from one axial end. The clamping ring includes a pair of clamping half rings (11). Each clamping half ring (11) has a connecting plate (12) at one radial end. The drive spindle passes through the clamping ring and clamps the pair of clamping half rings (11) to the drive spindle through the connecting plate (12).

3. The liquid abrasive finishing fixture according to claim 1, characterized in that, The drive structure (3) includes a drive motor (31) and a drive rod (24) extending along the radial outer wall of the ring (21) and connected to the output shaft of the drive motor (31).

4. A liquid abrasive finishing fixture according to claim 3, characterized in that, The clamp sleeve (1) has a receiving groove (13) at the other end of its axial direction. A sleeve cover (14) for sealing the receiving groove (13) is connected to the clamp sleeve (1). The drive motor (31) is located in the receiving groove (13). The output shaft of the drive motor (31) passes through the sleeve cover (14) and is connected to the drive rod (24).

5. A liquid abrasive finishing fixture according to claim 1, characterized in that, The clamping structure (23) includes through holes (211) distributed circumferentially on the ring sleeve (21) and a clamping member connected to the through holes (211), one end of the clamping member being clamped against the outer wall of the workpiece (100) to be processed.

6. A liquid abrasive finishing fixture according to claim 5, characterized in that, The through hole (211) includes a threaded hole, and the clamping member includes a screw.

7. A liquid abrasive finishing fixture according to claim 1, characterized in that, A connecting rib (25) is provided between the core mold (22) and the inner wall of the ring sleeve (21).

8. A liquid abrasive finishing fixture according to claim 1, characterized in that, The workpiece to be processed (100) includes a thin-walled annular workpiece.

9. A liquid abrasive finishing fixture according to claim 1, characterized in that, The core mold (22) is a cylindrical structure, and the core mold (22) and the ring sleeve (21) are concentrically arranged.

10. A liquid abrasive finishing fixture according to claim 1, characterized in that, The abrasive guide gap (20) is 1.5±0.2mm.

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