A handheld polishing fixture and polishing method for dual mounting plate blades

Abstract

A handheld polishing fixture and polishing method for double-mounted blades are disclosed. The polishing fixture includes a fixture body with a U-shaped groove. Circular countersunk holes are provided on both sides of the U-shaped groove. A rotatable angle adjustment block is installed in one of the countersunk holes, and a rotatable clamping block is installed in the other. Slots are provided on the opposing surfaces of the angle adjustment block and the clamping block. Mounting plates at both ends of the blade to be polished are inserted into the slots of the angle adjustment block and the clamping block, respectively. An angle adjustment rod is provided at one end of the fixture body, and its inner end is fixedly connected to the angle adjustment block. A clamping screw is threadedly provided at the other end of the fixture body, and its inner end abuts against the clamping block. The polishing method uses the aforementioned polishing fixture. This invention improves the efficiency of manual polishing, enhances worker comfort, reduces safety hazards, and lowers production costs.

Description

Technical Field

[0001] This invention relates to the field of aero-engine blade processing technology, and in particular to a hand-held polishing fixture and polishing method for double-mounted blades. Background Technology

[0002] like Figure 1 The diagram shows a schematic of a double-mounting-plate blade. The blade body is located in the middle, and the mounting plates are at both ends. This type of blade requires extremely high precision. The blade body and flow channel surfaces are typically machined using five-axis milling combined with manual polishing. Alternatively, five-axis milling combined with mechanical polishing can be used. However, some small-sized blades are difficult to machine using mechanical polishing and require manual polishing. The unique structure of these small-sized double-mounting-plate blades makes manual polishing difficult, inefficient, and poses significant safety hazards due to the limited hand-held area and the high heat generated during polishing. Summary of the Invention

[0003] The main objective of this invention is to provide a hand-held polishing fixture and polishing method for dual mounting plate blades, aiming to solve the aforementioned technical problems.

[0004] To achieve the above objectives, the present invention provides a handheld polishing fixture for blades with dual mounting plates, comprising a fixture body with a U-shaped groove; circular countersunk holes are respectively provided on the two side walls of the U-shaped groove, a rotatable angle adjustment block is installed in one of the circular countersunk holes, and a rotatable clamping block is installed in the other circular countersunk hole; slots are respectively provided on the opposing surfaces of the angle adjustment block and the clamping block; mounting plates at both ends of the blade to be polished are respectively inserted into the slots of the angle adjustment block and the clamping block; an angle adjustment rod is provided at one end of the fixture body, and the inner end of the angle adjustment rod is fixedly connected to the angle adjustment block for rotating the angle adjustment block; a clamping screw is provided at the other end of the fixture body through a threaded engagement, and the inner end of the clamping screw abuts against the clamping block for pushing the clamping block to move axially and clamp the blade to be polished.

[0005] Preferably, protrusions are integrally formed on the end faces of both ends of the clamp body to form gripping portions.

[0006] Preferably, a handle block is provided at the outer end of the angle adjustment rod.

[0007] Preferably, a disc body is provided at the outer end of the clamping screw, the diameter of which is larger than the diameter of the clamping screw, and a crank handle is provided at the end face of the disc body near the edge.

[0008] Preferably, a slot is provided at the top of the circular countersunk hole on both sides of the U-shaped groove, and the width of the slot is greater than the width of the mounting plate of the blade to be polished; one end of the slot on the angle adjustment block and the clamping block is an open structure.

[0009] Preferably, the two side walls of the groove are in the shape of an inverted V-shape.

[0010] Preferably, the angle adjustment block and the clamping block are made of engineering plastic.

[0011] Preferably, the upper and lower surfaces of the protrusion are parallel planes.

[0012] Preferably, the fixture body has a segmented structure, with a symmetrical left base and a right base along the axial direction of the blade to be polished, and the left base and the right base are connected by bolts and nuts.

[0013] On the other hand, the present invention also proposes a hand-held polishing method for dual mounting plate blades, using the aforementioned hand-held polishing fixture, comprising the following steps:

[0014] Step S1: Place the blade to be polished into the U-shaped groove of the fixture body, and insert the mounting plates at both ends of the blade into the slots of the angle adjustment block and the clamping block, respectively.

[0015] Step S2: Rotate the angle adjustment rod to drive the angle adjustment block to rotate, adjust the angle of the blade to be polished to a suitable position, tighten the clamping screw to push the clamping block to move axially and clamp the blade to be polished;

[0016] Step S3: Hold the main body of the clamp to the blade to be polished. When it is necessary to adjust the polishing part, loosen the clamping screw, repeat step S2 to adjust the angle of the blade to be polished, and then tighten it again to perform polishing.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0018] (1) In this invention, during use, the blade to be polished is placed in the U-shaped groove of the fixture body, and the mounting plates at both ends of the blade to be polished are respectively inserted into the slots of the angle adjustment block and the clamping block; the angle adjustment rod is rotated to drive the angle adjustment block to rotate, and the angle of the blade to be polished is adjusted to a suitable position; the clamping screw is tightened to push the clamping block to move axially to clamp the blade to be polished, and then the fixture body can be held to the blade to be polished. Since the angle adjustment block and the clamping block are rotatably installed in the two side walls of the U-shaped groove, when the angle adjustment rod is rotated, the angle adjustment block is rotated, and the blade to be polished can be rotated 360° in the U-shaped groove in the middle of the fixture body. The polishing worker can adjust the blade to a posture that is convenient for polishing according to his own polishing habits, and the transition position between the air inlet side and the exhaust side and the blade body in the basin direction and the blade body back direction can also be adjusted to a favorable posture for polishing, which greatly improves the polishing efficiency.

[0019] (2) By employing the hand-held polishing fixture provided by the present invention, the fixture body provides a gripping part that is easy for workers to operate, making hand-held polishing convenient. Specifically, by integrally forming protrusions on the end faces of both ends of the fixture body to form a gripping part, it is convenient for the operator to hold the fixture on the protrusions during polishing.

[0020] (3) The angle adjustment block and clamping block on the fixture can be replaced according to different sizes of blades. As long as the blade mounting plate can be stably clamped, the fixture has a wide range of applications.

[0021] (4) Since the angle adjustment block and the clamping block are made of engineering plastic, the high heat generated during the polishing process will not be conducted to the fixture body, the polishing worker will not feel uncomfortable, and multiple pieces can be polished continuously without stopping to relieve the burning sensation on the hands, which greatly improves the polishing efficiency and the comfort of the polishing worker.

[0022] (5) Using the fixture of the present invention can improve the efficiency of manual polishing, enhance worker comfort, reduce safety hazards, and reduce production costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a double-mounted-plate blade;

[0025] Figure 2 This is a schematic diagram of the hand-held polishing fixture for double mounting plate blades provided by the present invention;

[0026] Figure 3 This is an exploded view of the structure of the handheld polishing fixture with dual mounting plates and blades provided by the present invention.

[0027] Explanation of reference numerals: 1. Fixture body; 1a. U-shaped groove; 1b. Protrusion; 1c. Groove; 1d. Left base; 1e. Right base; 2. Blade to be polished; 2a. Blade body; 2b. Mounting plate; 3. Angle adjustment block; 4. Clamping block; 5. Clamping screw; 5a. Disc; 5b. Handle; 6. Angle adjustment rod; 7. Bolt; 8. Nut. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] Combination Figure 1 The diagram shows a double mounting plate blade. The blade 2 has a blade body 2a in the middle and mounting plates 2b at both ends.

[0031] This embodiment provides a handheld polishing fixture for dual mounting plate blades, combined with... Figure 2 , Figure 3 The diagram shows a specific embodiment of a handheld polishing fixture with dual mounting plates. The fixture includes a fixture body 1 with a U-shaped groove 1a. Circular countersunk holes are provided on both sides of the U-shaped groove 1a. A rotatable angle adjustment block 3 is installed in one of the countersunk holes, and a rotatable clamping block 4 is installed in the other. Slots are provided on the opposing surfaces of the angle adjustment block 3 and the clamping block 4. Mounting plates 2b at both ends of the blade 2 to be polished are inserted into the slots of the angle adjustment block 3 and the clamping block 4, respectively. An angle adjustment rod 6 is provided at one end of the fixture body 1, and its inner end is fixedly connected to the angle adjustment block 3 for rotating the angle adjustment block 3. A clamping screw 5 is provided at the other end of the fixture body 1 via a threaded connection. The inner end of the clamping screw 5 abuts against the clamping block 4 to push the clamping block 4 to move axially and clamp the blade 2 to be polished.

[0032] This embodiment also provides a hand-held polishing method for dual mounting plate blades, using the aforementioned hand-held polishing fixture, including the following steps:

[0033] Step S1: Place the blade 2 to be polished into the U-shaped groove 1a of the fixture body 1, and insert the mounting plates 2b at both ends of the blade 2 into the slots of the angle adjustment block 3 and the clamping block 4 respectively.

[0034] Step S2: Rotate the angle adjustment rod 6 to drive the angle adjustment block 3 to rotate, adjust the angle of the blade 2 to be polished to a suitable position, tighten the clamping screw 5 to push the clamping block 4 to move axially and clamp the blade 2 to be polished;

[0035] Step S3: Hold the main body 1 of the clamp to the blade 2 to be polished. When it is necessary to adjust the polishing part, loosen the clamping screw 5, repeat step S2 to adjust the angle of the blade 2 to be polished, and then tighten it again to perform polishing.

[0036] Combination Figure 2 As shown, protrusions 1b are integrally formed on the end faces of both ends of the fixture body 1 to form gripping portions. During polishing, the fixture is gripped on the protrusions 1b. Furthermore, the upper and lower surfaces of the protrusions 1b are parallel planes. When gripping, the thumb is positioned on one side of the plane, and the other finger is positioned on the other side. By setting the upper and lower surfaces of the protrusions 1b to parallel planes, it is easier for the operator to apply force to the entire fixture during the polishing process to adjust the polishing angle.

[0037] Combination Figure 3 As shown, a handle block 6a is provided on the outer end of the angle adjustment rod 6 to facilitate rotation. When rotating the angle adjustment rod 6, the handle block 6a is held to rotate it, which saves effort.

[0038] Combination Figure 2 , Figure 3 As shown, a disc 5a is provided at the outer end of the clamping screw 5. The diameter of the disc 5a is larger than the diameter of the clamping screw 5. A crank handle 5b is provided near the edge of the end face of the disc 5a. The purpose of providing the disc 5a and the crank handle 5b is to facilitate the rotation of the clamping screw 5 and to save effort.

[0039] Combination Figure 2 As shown, slots 1c are respectively provided at the top of the circular countersunk holes on both sides of the U-shaped groove 1a. The width of the slot 1c is greater than the width of the mounting plate 2b of the blade 2 to be polished. One end of the slot on the angle adjusting block 3 and the clamping block 4 is open. When assembling the blade 2 to be polished, first align the open ends of the slots on the angle adjusting block 3 and the clamping block 4 with the slot 1c. The mounting plates 2b at both ends of the blade 2 to be polished are then inserted downwards from the slot 1c into the slots on the angle adjusting block 3 and the clamping block 4, which facilitates the placement of the blade and improves the clamping efficiency. Furthermore, in order to improve the blade clamping efficiency, the two sides of the slot 1c are shaped like an inverted V-shape. The two sides of the slot 1c act as guides, allowing the mounting plate 2b to be quickly inserted into the slot 1c.

[0040] To reduce heat transfer and prevent the high temperatures generated during polishing from being conducted to the fixture body 1, the angle adjustment block 3 and the clamping block 4 are made of engineering plastic. Engineering plastic has poor thermal conductivity, so the high heat generated during polishing will not be conducted to the fixture body 1, preventing discomfort for the polishing worker. Multiple pieces can be polished continuously without needing to stop and relieve the burning sensation in their hands, greatly improving polishing efficiency and worker comfort. Furthermore, engineering plastic is lightweight, reducing the overall weight of the fixture.

[0041] Combination Figure 3 As shown, the fixture body 1 has a modular structure, consisting of a symmetrical left base 1d and a right base 1e along the axis of the blade 2 to be polished. The left base 1d and the right base 1e are connected by bolts 7 and nuts 8. Since the circular countersunk holes on the two side walls of the U-shaped groove 1a are opposite each other, machining them is relatively inconvenient. The modular structure is adopted to facilitate the machining of the circular countersunk holes on the two side walls of the U-shaped groove 1a, such as by milling.

[0042] The working principle of the hand-held polishing fixture with dual mounting plates and blades provided by this invention is as follows:

[0043] The blades of the double mounting plate blade hand polishing fixture are clamped by positioning the blades through a slot of the same shape on the reference surface of the mounting plate 2b and the inner side of the angle adjustment block 3, which restricts the six degrees of freedom of the blades on the fixture. Then, the other end contacts the slot on the inner side of the clamping block, and then the clamping screw 5 is tightened. The inner end face of the clamping screw 5 abuts against the clamping block 4, pushing the clamping block 4 to move axially to achieve the function of clamping the blade 2 to be polished.

[0044] Initially, the blade 2 to be polished is vertically inserted from above the fixture body 1 into the slots of the angle adjusting block 3 and the clamping block 4 through the slot 1c. At this time, the clamping screw 5 is in a loose state. Rotating the angle adjusting rod 6 causes the angle adjusting block 3 to rotate, so that the blade body of the blade 2 to be polished is in a position that facilitates polishing the blade body in the basin direction. Tighten the clamping screw 5, and hold the protrusions 1b on both sides of the fixture body 1 to perform the basin-direction polishing of the blade body. After the basin-direction polishing of the blade body is completed, loosen the clamping screw 5 to a loose state, rotate the angle adjusting rod 6 to make the air intake edge of the blade in a position that facilitates polishing, and tighten the clamping screw. 5. Polish the intake edge using the protrusions 1b on both sides of the main body 1 of the hand-held clamp. After polishing the intake edge, loosen the clamping screw 5 to a relaxed state. Rotate the angle adjustment rod 6 to position the blade so that its back is facing the polishing direction. Tighten the clamping screw 5. Polish the back of the blade using the protrusions 1b on both sides of the main body 1 of the hand-held clamp. After polishing the back of the blade, loosen the clamping screw 5 to a relaxed state. Rotate the angle adjustment rod 6 to position the exhaust edge of the blade so that its polishing direction is facing the polishing direction. Tighten the clamping screw 5. Polish the exhaust edge using the protrusions 1b on both sides of the main body 1 of the hand-held clamp. This completes the polishing of the entire blade.

[0045] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A handheld polishing fixture for double mounting plate blades, characterized in that, The fixture includes a main body (1) with a U-shaped groove (1a) on it. Circular countersunk holes are provided on both sides of the U-shaped groove (1a). A rotatable angle adjustment block (3) is installed in one of the circular countersunk holes, and a rotatable clamping block (4) is installed in the other circular countersunk hole. Slots are provided on the opposing surfaces of the angle adjustment block (3) and the clamping block (4). Mounting plates (2b) at both ends of the blade to be polished (2) are inserted into the angle adjustment block. The slots of the segment (3) and the clamping block (4) are located in the fixture body (1); an angle adjustment rod (6) is provided at one end of the fixture body (1), and the inner end of the angle adjustment rod (6) is fixedly connected to the angle adjustment block (3) for rotating the angle adjustment block (3); a clamping screw (5) is provided at the other end of the fixture body (1) through a threaded connection, and the inner end of the clamping screw (5) abuts against the clamping block (4) for pushing the clamping block (4) to move along its axial direction to clamp the blade (2) to be polished.

2. The handheld polishing fixture for double mounting plate blades as described in claim 1, characterized in that, The end faces of both ends of the clamp body (1) are integrally formed with protrusions (1b) to form gripping parts.

3. The handheld polishing fixture for double mounting plate blades as described in claim 1, characterized in that, A handle block (6a) is provided at the outer end of the angle adjustment rod (6).

4. The handheld polishing fixture for double mounting plate blades as described in claim 1, characterized in that, A disc (5a) is provided at the outer end of the clamping screw (5), the diameter of which is larger than the diameter of the clamping screw (5), and a crank (5b) is provided at the end face of the disc (5a) near the edge.

5. A handheld polishing fixture for double mounting plate blades as described in claim 1, characterized in that, A slot (1c) is provided on the top of the circular countersunk hole on both sides of the U-shaped groove (1a). The width of the slot (1c) is greater than the width of the mounting plate (2b) of the blade to be polished (2). The slots on the angle adjustment block (3) and the clamping block (4) have an open structure at one end.

6. A handheld polishing fixture for double mounting plate blades as described in claim 5, characterized in that, The two side walls of the groove (1c) are shaped like an inverted V-shape.

7. A handheld polishing fixture for double mounting plate blades as described in claim 1, characterized in that, The angle adjustment block (3) and the clamping block (4) are made of engineering plastic.

8. A handheld polishing fixture for double mounting plate blades as described in claim 2, characterized in that, The upper and lower surfaces of the protrusion (1b) are parallel planes.

9. A handheld polishing fixture for double mounting plate blades as described in claim 1, characterized in that, The fixture body (1) is a segmented structure, with a left base (1d) and a right base (1e) symmetrically arranged along the axis of the blade (2) to be polished. The left base (1d) and the right base (1e) are connected by bolts (7) and nuts (8).

10. A hand-held polishing method for dual mounting plate blades, characterized in that, The hand-held polishing fixture according to any one of claims 1 to 9 comprises the following steps: Step S1: Place the blade (2) to be polished into the U-shaped groove (1a) of the fixture body (1), and insert the mounting plates (2b) at both ends of the blade (2) to be polished into the slots of the angle adjustment block (3) and the clamping block (4) respectively; Step S2: Rotate the angle adjustment rod (6) to drive the angle adjustment block (3) to rotate, adjust the angle of the blade (2) to be polished to a suitable position, tighten the clamping screw (5) to push the clamping block (4) to move axially to clamp the blade (2) to be polished; Step S3: Hold the main body of the clamp (1) for the blade (2) to be polished. When it is necessary to adjust the polishing part, loosen the clamping screw (5), repeat step S2 to adjust the angle of the blade (2) to be polished, and then tighten it again to perform polishing.

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