Self-adjusting abrasive flow clamp

Abstract

The self-adjusting abrasive flow clamp is suitable for machining a tee joint through the abrasive flow technology and is characterized in that the self-adjusting abrasive flow clamp comprises a base, a baffle ring, a surrounding cylinder, a first arc-shaped bent pipe, a second arc-shaped bent pipe and a third arc-shaped bent pipe, opening structures are arranged at the two ends of the surrounding cylinder, a mounting hole is formed in the baffle ring, and an arc-shaped protrusion is arranged on the top face of the base; when abrasive particles enter through the third arc-shaped bent pipe, the abrasive materials flow out only through the first arc-shaped bent pipe; when the grinding materials are input through the groove, the grinding materials enter the tee joint through the second arc-shaped bent pipe and are output through the top end of the third arc-shaped bent pipe, the tee joint grinding efficiency is improved, and time consumption is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of three-way machining clamps, and particularly relates to a self-adjusting abrasive particle flow clamp. BACKGROUND

[0002] Three-way pipe joint parts are commonly used parts of an aero-engine oil system, and the raw material is usually a 3D printed part. Since the surface roughness of the part manufactured by the 3D printing process is usually only Ra6.3-R12.5, the surface roughness needs to be improved by a surface treatment process to meet the use requirements. Due to the structural limitation, the three-way pipe joint part cannot be treated by sandblasting, polishing and other methods on the entire inner cavity surface, and therefore can only be processed by the abrasive particle flow process to realize full-position surface processing. The cavity of the three-way joint part is distributed in a T shape, which is not a straight-up straight-down structure that is good at processing by the abrasive particle flow process. The commonly used processing method is to block one cavity to process the other two, which needs to clamp the part twice, is low in efficiency and restricts the batch production of the part.

[0003] In view of this, the present application is proposed. SUMMARY

[0004] The purpose of the present application is to provide a self-adjusting abrasive particle flow clamp, which realizes processing of all inner cavity surfaces of a part at one time by automatically switching the processing path, so as to improve the processing efficiency, shorten the processing time and improve the grinding efficiency. The technical solution of the present application has many technical advantages, which are described below. A self-adjusting abrasive particle flow clamp is suitable for processing a three-way pipe joint, and comprises a base, a blocking ring, a surrounding cylinder with an open structure at both ends, a first arc-shaped elbow, a second arc-shaped elbow and a third arc-shaped elbow. The blocking ring is provided with a mounting hole, and the top surface of the base is provided with an arc-shaped protrusion. In the present application, The central area of the top surface of the base is detachably mounted with a support seat, and the bottom surface of the base and below the support seat is provided with a groove. The support seat is provided with flow holes at intervals, and the flow holes are communicated with the groove for conveying abrasive materials by an abrasive material equipment. The first arc-shaped elbow and the second arc-shaped elbow are both provided with an open structure at both ends. A first partition plate is installed in a hinged manner adjacent to the bottom end opening position of the first arc-shaped elbow and is provided with a first blocking piece. When the first partition plate is horizontal, the first blocking piece is above the free end of the first partition plate. A second partition plate is installed in a hinged manner adjacent to the bottom end opening position of the second arc-shaped elbow and is provided with a second blocking piece. When the second partition plate is horizontal, the second blocking piece is below the free end of the first partition plate. The top end of each of the first arc-shaped elbow and the second arc-shaped elbow is used for fixing the end of the three-way pipe joint. The bottom end of each of the first arc-shaped elbow and the second arc-shaped elbow is communicated with the flow hole through a flange plate. The inner ring size of the surrounding cylinder is matched with the outer ring size of the arc-shaped protrusion, the installation of the bottom end of the surrounding cylinder on the base is completed through the arc-shaped protrusion, the top end of the surrounding cylinder is detachably connected with the blocking ring, and the third arc-shaped elbow pipe is installed on the blocking ring through the installation hole and is used for the entry of the abrasive at one end and the fixation of the end head of the tee joint at the other end. When the abrasive enters through the third arc-shaped elbow pipe, the abrasive only flows out through the first arc-shaped elbow pipe; when the abrasive is input through the groove, the abrasive only enters the tee through the second arc-shaped elbow pipe and is output through the top end of the third arc-shaped elbow pipe.

[0005] Compared with the prior art, the technical scheme provided by the present application has the following beneficial effects: The one-way closing device is arranged in the clamp channel, the uniformity of machining and grinding is ensured when the abrasive moves up and down in the inner cavity of the part, the overall one-time machining is realized under the condition of one-time clamping, and the machining efficiency is improved. The abrasive flow machining process is usually one-way machining or reciprocating cycle machining mode. Since the tee joint type part has three flow channel openings, if the one-way machining mode is used, one flow channel opening must be blocked in advance, the other two are machined, and the blocking position is replaced for secondary machining, which is time-consuming and laborious. If the reciprocating cycle machining is used, the abrasive often has a one-in-two-out or two-in-one-out walking state. Influenced by fluid mechanics, the abrasive will move in the channel with smaller resistance, causing uneven overall grinding effect. The clamp of the present application is provided with a one-way closing device in the two flow channel openings, so that the abrasive realizes single-path machining without branching, the uniformity of the machined surface is ensured, the overall one-time machining is realized under the condition of one-time clamping, and the machining efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0006] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings required to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0007] Fig. 1 It is a front view of the present application; Fig. 2 It is a schematic diagram of grinding from bottom to top of the present application; Fig. 3 It is a schematic diagram of grinding from top to bottom of the present application, wherein, 1, base; 2, cylinder; 3, blocking ring; 4, first arc-shaped elbow; 5, second arc-shaped elbow; 6, third arc-shaped elbow; 7, arc-shaped protrusion; 8, support seat; 9, flow hole; 10, groove; 11, first blocking block; 12, second blocking block; 13, first partition plate; 14, second partition plate; 15, lifting screw; 16, first connecting seat; 17, second connecting seat; 18, first ring lug; 19, second ring lug. DETAILED DESCRIPTION

[0008] Other advantages and benefits of the present application will become apparent to those skilled in the art upon reading the following detailed description of the application. It is intended, however, that the application shall not be limited to the disclosed embodiment, but shall include all those alternatives which are within the spirit and scope of the present application. It should also be understood that the detailed description of the embodiments is made with reference to the accompanying drawings, and that the application is not limited to the specific embodiments described.

[0009] It should be noted that the various aspects described hereinafter in the context of the embodiments are described within the scope of the appended claims. It should be apparent to those skilled in the art that the aspects described herein can be embodied in a wide variety of forms, and that any specific structure and / or function described herein is merely illustrative. Based on the teachings herein one skilled in the art should appreciate that an aspect described herein can be implemented independently of any other aspects and that an aspect described herein can be implemented both as any number of software and / or hardware structures.

[0010] It should also be noted that the figures provided in the following embodiments are only to schematically illustrate the basic concept of the present application, and the figures only show the components related to the present application, not drawn according to the number, shape and size of the components in actual implementation, the type, number and proportion of each component in actual implementation can be arbitrarily changed, and the layout type of the components can also be more complex.

[0011] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that aspects can be practiced without these specific details. To enable those skilled in the art to better understand the invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise stated, "a plurality of" means two or more.

[0012] like Figs. 1 to 3 The self-adjusting abrasive flow fixture shown is suitable for machining tees using abrasive flow technology. It includes a base 1, a retaining ring 3, and a casing 2 with open ends, a first arc-shaped bend 4, a second arc-shaped bend 5, and a third arc-shaped bend 6. The retaining ring 3 has mounting holes. The top surface of the base 1 has an arc-shaped protrusion 7. The bottoms of the first and second arc-shaped bends gradually transition from vertical to an acute angle with the vertical direction. The top of the third arc-shaped bend 6 is vertical, and its bottom gradually transitions to an arc shape with an acute angle with the vertical direction. The three bends are used to fix the tee at an angle. The support base 8 is installed in a detachable manner (screw installation) in the central area of ​​the top surface of the base 1. The bottom surface of the base 1 and below the support base 8 is provided with a groove 10 (through groove) or a hole. The support base 8 is provided with flow holes 9 at intervals. The flow holes 9 are connected to the groove 10 and are used for conveying abrasive in abrasive equipment of abrasive flow process. Both the first arc-shaped bend 4 and the second arc-shaped bend 5 are open at both ends. A first partition 13 is hinged and a first stop 11 is provided at the bottom opening of the first arc-shaped bend 4. When the first partition 13 is horizontal, the first stop 11 is positioned above the free end of the first partition 13. Preferably, the cross-sectional area of ​​the first partition 13 is adapted to the cross-sectional area of ​​the first arc-shaped bend 4. When the abrasive is conveyed through the groove 10, the first partition 13 is kept horizontal under the action of the abrasive impulse, which can close the bottom end of the first arc-shaped bend 4 and prevent the abrasive from entering. Preferably, the first partition 13 can form an acute angle with the vertical direction. However, if the abrasive particle size is large, such as greater than 80 mesh, the angle may not be formed in the vertical direction.

[0013] The second baffle 14 is hingedly installed adjacent to the opening position of the bottom end of the second arc-shaped elbow 5 and is provided with a second stopper 12, when the second baffle 14 is horizontal, the second stopper 12 is placed below the free end of the first baffle 13; the top end of the first arc-shaped elbow 4 and the top end of the second arc-shaped elbow 5 are respectively used for fixing the end head of the tee joint; the bottom end of the first arc-shaped elbow 4 and the bottom end of the second arc-shaped elbow 5 are respectively communicated with the flow hole 9 through flanges, preferably, the cross-sectional area of the second baffle 14 is matched with the cross-sectional area of the second arc-shaped elbow 5, which can be a flat plate at least shielding more than two-thirds of the area of the second arc-shaped elbow 5, and the first baffle 13 is provided in the same structure as the second baffle 14.

[0014] Further, the bottom end of the first arc-shaped elbow 4 and the bottom end of the second arc-shaped elbow 5 are respectively integrally provided with flanges, which facilitates quick docking with the support seat 8.

[0015] The inner ring size of the surrounding cylinder 2 is matched with the outer ring size of the arc-shaped protrusion 7, the installation of the bottom end of the surrounding cylinder 2 on the base 1 is completed through the arc-shaped protrusion 7, the top end of the surrounding cylinder 2 is detachably connected with the stop ring 3, the third arc-shaped elbow 6 is installed on the stop ring 3 through the mounting hole, one end is used for the entry of the abrasive, and the other end is used for the fixation of the end head of the tee joint; When the abrasive enters through the third arc-shaped elbow 6, the abrasive only flows out through the first arc-shaped elbow 4, under the action of the second baffle 14, the second arc-shaped elbow 5 is closed, this time, the flow channel 1 and the flow channel 3 of the tee joint are continuously ground; when the abrasive is input through the groove 10 (the abrasive is transported from bottom to top), only the second arc-shaped elbow 5 enters the tee joint and is output through the top end of the third arc-shaped elbow 6, under the action of the first baffle 13, the first arc-shaped elbow 4 is closed, this time, the flow channel 2 and the flow channel 3 are continuously ground.

[0016] The structure can realize the repeated manual plugging of different ports of the tee joint without plugging, and when grinding, the flow channel 1 or the flow channel 2 is plugged, the flow channel 2, the flow channel 3, and the flow channel 1 and the flow channel 3 are continuously ground under the condition that the abrasive impact is not greatly reduced, avoiding the existing method of simultaneously grinding the three flow channels, reducing the abrasive impact kinetic energy, resulting in long grinding time and low grinding efficiency.

[0017] In one embodiment, the inner ring size of the arc-shaped protrusion 7 is greater than the outer ring size of the support seat 8, the outer ring size of the support seat 8 is greater than the cross-sectional size of the groove 10, and the outer ring surface of the surrounding cylinder 2 is provided with lifting screws 15 for lifting the entire clamp.

[0018] In one embodiment, the top end of the first arc-shaped elbow pipe 4 is provided with a first lug 18, the first lug 18 is connected with the large end of the first connecting seat 16 of the T-shaped structure through a screw, the central region of the first connecting seat 16 is provided with a through hole, and the small end of the first connecting seat 16 is used for fixing the end of the tee joint. The top end of the second arc-shaped elbow pipe 5 is provided with a second lug 19, the second lug 19 is connected with the large end of the second connecting seat 17 of the T-shaped structure through a screw, the central region of the second connecting seat 17 is provided with a through hole, and the small end of the second connecting seat 17 is used for fixing the end of the tee joint. Preferably, a sealing ring is arranged between the first lug 18 and the large end of the first connecting seat 16, and a sealing ring is arranged between the second lug 19 and the large end of the second connecting seat 17, so as to avoid leakage of the abrasive.

[0019] In one embodiment, the top surface of the retaining ring 3 is provided with a sealing ring, which is used for sealing of a hydraulic device for supplying hydraulic pressure to the abrasive device.

[0020] A one-way closing device is arranged in the clamp channel to ensure single-path processing in the inner cavity of the part during the up-down movement of the abrasive, ensuring the uniformity of the processing and grinding. The whole is processed at one time under the condition of one-time clamping, improving the processing efficiency. The abrasive flow processing technology is usually one-way processing or reciprocating cycle processing mode. Since there are three flow channel openings in the tee joint part, if the one-way processing mode is adopted, one flow channel opening must be blocked in advance, and the other two are processed, and the blocking position is replaced for secondary processing, which is time-consuming and laborious. However, in the reciprocating cycle processing mode, the abrasive often has a one-in-two-out or two-in-one-out walking state. Influenced by fluid mechanics, the abrasive will move in the channel with smaller resistance, causing uneven overall grinding effect. The clamp of the present application is provided with a one-way closing device in the two flow channel openings, so that the abrasive realizes single-path processing without branching, ensuring the uniformity of the surface to be processed. The whole is processed at one time under the condition of one-time clamping, improving the processing efficiency.

[0021] The product provided by the present application is described in detail above. Specific examples are applied in this paper to describe the principles and implementation modes of the present application. The above examples are only used to help understand the core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, without departing from the principles of the invention, some improvements and modifications can be made to the invention, and these improvements and modifications also fall within the protection scope of the invention.

Claims

1. A self-adjusting abrasive particle flow fixture suitable for processing a tee fitting using an abrasive particle flow process, characterized in that, The enclosure includes a base, a retaining ring, and a two-end opening structure arranged surrounding cylinder, first arc-shaped elbow, second arc-shaped elbow, third arc-shaped elbow, the retaining ring is provided with mounting holes, the top surface of the base is provided with an arc-shaped protrusion, wherein, The central area of the top surface of the base is detachably mounted with a support seat, the bottom surface of the base and below the support seat is provided with a groove, the support seat is provided with flow holes at intervals, the flow holes are communicated with the groove, and the abrasive equipment for abrasive flow process is used for abrasive conveying; The first arc-shaped elbow and the second arc-shaped elbow are both provided with a two-end opening structure, a first partition plate is hingedly mounted adjacent to the bottom end opening position of the first arc-shaped elbow and is provided with a first stopper, when the first partition plate is horizontal, the first stopper is above the free end of the first partition plate; a second partition plate is hingedly mounted adjacent to the bottom end opening position of the second arc-shaped elbow and is provided with a second stopper, when the second partition plate is horizontal, the second stopper is below the free end of the first partition plate; the top end of each of the first arc-shaped elbow and the second arc-shaped elbow is used for fixing the end head of a tee joint; the bottom end of each of the first arc-shaped elbow and the second arc-shaped elbow is communicated with the flow hole through a flange plate; The inner ring size of the surrounding cylinder is matched with the outer ring size of the arc-shaped protrusion, the installation of the bottom end of the surrounding cylinder on the base is completed through the arc-shaped protrusion, the top end of the surrounding cylinder is detachably connected with the retaining ring, the third arc-shaped elbow is mounted on the retaining ring through the mounting hole, one end is used for the entry of abrasive, and the other end is used for the fixing of the end head of a tee joint; When the abrasive enters through the third arc-shaped elbow, the abrasive only flows out through the first arc-shaped elbow; when the abrasive is input through the groove, it only enters the tee through the second arc-shaped elbow and is output through the top end of the third arc-shaped elbow.

2. The self-adjusting abrasive particle flow clamp of claim 1, wherein, The inner ring size of the arc-shaped protrusion is greater than the outer ring size of the support seat, and the outer ring size of the support seat is greater than the cross-sectional size of the groove.

3. The self-adjusting abrasive particle flow clamp of claim 1, wherein, The outer ring surface of the surrounding cylinder is provided with lifting screws for lifting the whole clamp.

4. The self-adjusting abrasive particle flow clamp of claim 1, wherein, The top end of the first arc-shaped elbow is provided with a first ring ear, the first ring ear is connected with the large end of a first connecting seat of a T-shaped structure through a screw, a through hole is formed in the central area of the first connecting seat, and the small end of the first connecting seat is used for fixing the end head of a tee joint.

5. The self-adjusting abrasive particle flow clamp of claim 4, wherein, The top end of the second arc-shaped elbow is provided with a second ring ear, the second ring ear is connected with the large end of a second connecting seat of a T-shaped structure through a screw, a through hole is formed in the central area of the second connecting seat, and the small end of the second connecting seat is used for fixing the end head of a tee joint.

6. The self-adjusting abrasive particle flow clamp of claim 5, wherein, A sealing ring is arranged between the first ring ear and the large end of the first connecting seat.

7. The self-adjusting abrasive particle flow clamp of claim 5, wherein, A sealing ring is arranged between the second ring ear and the large end of the second connecting seat.

8. The self-adjusting abrasive particle flow clamp of claim 1, wherein, The top surface of the retaining ring is provided with a sealing ring, the sealing ring is used for sealing a hydraulic device, and the hydraulic device is used for supplying hydraulic pressure to the abrasive equipment.

9. The self-adjusting abrasive particle flow clamp of claim 1, wherein, The cross-sectional area of the first partition plate is matched with the cross-sectional area of the first arc-shaped elbow, and the cross-sectional area of the second partition plate is matched with the cross-sectional area of the second arc-shaped elbow.

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