A shot peening gun clamp device

Abstract

This invention provides a shot peening machine spray gun clamping device, including a vertically arranged pull rod (1) connected to the shot peening machine, and a rectangular base (2) connected to the lower end of the pull rod (1). The device is characterized by a focusing baffle (9) connected to the base (2), and a group of spray guns symmetrically connected to the focusing baffle (9) around its center, with the spraying direction of each spray gun converging at the same focal point on the center line of the focusing baffle (9). This invention has a simple structure; the nozzle is inserted into the clamping body without changing the angle, reducing the difficulty of nozzle focusing and making it quick and convenient to use. The clamping body effectively prevents damage to the rear-end reduction motor and other components during shot peening. The use of a telescopic fastening pin allows for flexible and varied forward and backward movement.

Description

Technical Field

[0001] This invention relates to the field of shot peening technology, and more specifically, to a shot peening gun clamping device for a shot peening machine. Background Technology

[0002] The meshing transmission of the primary and driven gears in an automotive differential requires high-intensity shot peening of the primary and driven gears. This is achieved using reinforced steel wire shot (standard: SAE J441 AMS2430N; CW-28, diameter 0.7mm; hardness HRC55-63; strength 0.35-0.55mm Almen A). The compressive stress on the gear surface needs to be at least -180ksi. The shot peening machine uses nozzles directed towards the tooth root to ensure at least 100% coverage of the tooth surface from the small end to the large end. This requires four peening guns focused on a single point, with each gun's flow rate controlled at 59kg / min ± 100%. The four pressure nozzles are positioned in a 1-to-1 opposing direction, covering all areas of the treated component.

[0003] The nozzles spray reinforced steel wire shot at approximately 5.5 Bar air pressure. During operation, the four nozzles are subjected to vibration and spray pressure. The spraying process also involves the weight of the shot blasting tube and the shot, causing the nozzle angle to easily change. Traditional nozzle structures (spray guns) are fixed with several round bars and screws, resulting in an unreliable structure and easy nozzle angle changes. To ensure the shot blasting process, frequent checks and adjustments are necessary, and focusing is very inconvenient. Furthermore, the nozzles wear out very easily, lasting less than a year, leading to high operating costs. The excessive freedom of the shot peening machine's spray gun fixture makes it very difficult to adjust the spray guns to the same spray point. Manual adjustment of the spray guns is simplified to only one gun; the spray guns and fixtures lack protection, resulting in severe wear; the distance between the spray gun and the turntable is too far, causing excessive spraying distance for small workpieces. The negative impacts are: 1. Long spray gun adjustment time, affecting production efficiency; 2. Adjusting only one spray gun makes it impossible to control whether other spray guns are properly spraying the workpiece, affecting the shot peening process and production efficiency; 3. Lack of spray gun protection leads to severe wear and shortens the spray gun's lifespan; 4. The large distance between the spray gun and the turntable cannot meet the requirements for shot peening the drive gear. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, such as inaccurate spray gun focusing, difficulty in adjustment, and large wear of the spray gun, and to provide a spray gun clamping device for shot peening machines.

[0005] The present invention adopts the following technical solution:

[0006] A shot peening machine spray gun clamping device includes a vertically arranged pull rod connected to the shot peening machine, and a rectangular base connected to the lower end of the pull rod. The base is characterized by a focusing baffle connected to it, and a group of spray guns are symmetrically connected to the focusing baffle with respect to its center. The spraying direction of each spray gun converges at the same focal point on the center line of the focusing baffle.

[0007] Based on the above technical solutions, the following further technical solutions are proposed:

[0008] The focusing baffle includes a vertically arranged central plate, with an upper inclined plate and a lower inclined plate symmetrically arranged on both sides of the central plate at a certain angle to the front of the central plate. The upper and lower inclined plates are respectively provided with focusing holes. A spray gun is connected to the back of the upper and lower inclined plates respectively. The spray center line of each spray gun coincides with the axis of the corresponding focusing hole. The axis of each focusing hole converges with the center line of the central plate at the same focal point.

[0009] A further technical solution is as follows: a vertical wing plate is provided between the upper and lower inclined plates on each side of the center plate, and an adjustment plate with a waist-shaped groove is connected to the back of each wing plate. An adjustment block is connected to each of the two sides of the base, and at least one screw connects the adjustment plate to the adjustment block through the waist-shaped hole on the adjustment plate.

[0010] A further technical solution is to connect a focusing pointer to the center of the front of the center plate, and focus the points where the axes of all focusing holes converge at the tip of the focusing pointer.

[0011] A further technical solution is as follows: a nozzle fixing block corresponding to the focusing hole is connected to the back of each upper or lower inclined plate. A nozzle locking nut is connected to one end of the nozzle fixing block. A nozzle is connected to the through hole of the nozzle fixing block and the nozzle locking nut. The sandblasting tube sleeve connected to the nozzle locking nut locks the nozzle. The spray center line of the nozzle coincides with the center line of the corresponding focusing hole.

[0012] The beneficial effects of this invention are: the clamp structure is simple, the nozzle is inserted into the clamp body and the angle does not change, reducing the difficulty of nozzle focusing and making it quick and convenient to use; the clamp body effectively prevents damage to the rear geared motor and other components during the shot blasting process; the use of a telescopic fastening pin allows for flexible and varied forward and backward movement; and the use of a focal pin in this device reduces focusing time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a perspective view of the present invention;

[0015] Figure 2 yes Figure 1 A 3D model with some parts removed;

[0016] Figure 3 yes Figure 1 Sectional view of AA. Detailed Implementation

[0017] The overall structure of the shot peening machine spray gun clamping device of the present invention is as follows: Figure 1 , Figure 2 As shown, it includes a vertically mounted pull rod 1 connected to the shot peening machine. The lower end of the pull rod 1 is connected to a rectangular base 2. A focusing baffle 9 is connected to the base 2. A set of spray guns (spray guns / nozzles are set on the nozzle fixing 7) are symmetrically connected to the focusing baffle 9 with respect to its center. The spray direction of each spray gun converges on the same focal point F on the center line of the focusing baffle 9.

[0018] The specific structure includes the following parts:

[0019] I. Focusing baffle 9, see Figure 1 and Figure 2 The focusing baffle 9 includes a vertically arranged central plate 9d. Symmetrically arranged on both sides of the central plate 9d are an upper inclined plate 9c and a lower inclined plate 9a at a certain angle to the front of the central plate. Each of the upper and lower inclined plates 9c and 9a has a focusing hole 9e. The inclination angle between the upper and lower inclined plates 9c and the front of the central plate causes the axes of the focusing holes 9e on the upper and lower inclined plates 9c and 9a to be focused on a focal point F on the central line. A spray gun / nozzle is connected to the back of each of the upper and lower inclined plates 9c and 9a. The spray centerline of each spray gun / nozzle coincides with the axis of the corresponding focusing hole, and the axis of each focusing hole converges with the central line of the central plate at the same focal point.

[0020] In addition, additional focusing holes are opened at different positions on the scribing line S on the front of the upper inclined plate 9c and the lower inclined plate 9a, so that the focus of the nozzle spray converges at different positions on the center line of the center plate, so as to spray onto different parts of the workpiece.

[0021] A vertical wing plate 9b is connected between the upper inclined plate 9c and the lower inclined plate 9a on each side of the center plate. An adjusting plate 3 with a waist-shaped groove is connected to the back of each wing plate 9b. An adjusting block 12 is connected to each of the two sides of the base 2, and is attached to the side of the base 2 with screws 11. A narrow slot 10 is formed at one end of the adjusting block 12. Two screws 13 connect the adjusting plate 3 to the adjusting block 12 through the waist-shaped holes on the adjusting plate 3.

[0022] A focusing pointer 15 is provided at the center of the front of the center plate. It is connected to the nut 9f at the center of the front of the center plate to adjust the position of the top of the focusing pointer 15. The focus of all the focusing holes converges at the top of the focusing pointer 15.

[0023] II. Nozzle (Spray Gun) Fixing Device

[0024] See Figure 1 , Figure 3 Each upper or lower inclined plate has a nozzle fixing block 7 connected to its back side, corresponding to the focusing hole. One end of the nozzle fixing block is connected to a nozzle locking nut 6. A nozzle 5 is connected to the through hole of the nozzle fixing block 7 and the nozzle locking nut 6. The inner hole of the nozzle 5 is connected to a matching nozzle core 5a. The large end of the nozzle 5 has a convex ring 5b that mates with the inner end of the nozzle locking nut. The sandblasting sleeve 4 threaded on the nozzle locking nut 6 abuts against the convex ring 5b to lock and fix the nozzle 5. The spray center line of the nozzle 5 coincides with the center line of the corresponding focusing hole. As can be seen from the figure, the focusing baffle 9 has a total of 4 symmetrical nozzle fixing blocks 7 and their nozzles 5. According to actual needs, different numbers of nozzle fixing blocks and their nozzles can be set on the focusing baffle 9, such as 2, 4, 6, or 8 nozzle fixing blocks and their nozzles.

[0025] Working principle: The fixture body is fixed to the machine tool via a connecting bracket and a fixing block. When changing products and needing to adjust the starting position of the spray, simply rotate the focus pin to a certain angle to align with the tooth root and tooth tip of the workpiece. This can be set in the program, which is convenient and quick. The nozzle is fastened to the fixture body, and the angle will not change during the spraying process. The fixture body itself also acts as a baffle, effectively preventing damage to the rear geared motor and other components caused by the reflection of the shot during the shot spraying process, thus extending the service life of this device. The nozzle of this device is fastened by a sand tube sleeve and a sand tube locking nut, making disassembly and replacement convenient. After the sandblasting tube is inserted into the sand tube sleeve, the self-locking screw is locked through the mounting holes around the sand tube sleeve, making it easy to replace the easily worn sandblasting tube.

[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A shot peening gun clamping device for a shot peening machine, comprising a vertically arranged pull rod (1) connected to the shot peening machine, the lower end of the pull rod (1) being connected to a rectangular base (2), characterized in that, A focusing baffle (9) is connected to the base (2). A group of spray guns are symmetrically connected to the focusing baffle (9) with its center. The spray direction of each spray gun converges on the same focal point of the center line of the focusing baffle (9). The focusing baffle (9) includes a vertically arranged center plate (9d), and an upper inclined plate (9c) and a lower inclined plate (9a) symmetrically arranged on both sides of the center plate (9d) at a certain angle to the front of the center plate. The upper inclined plate (9c) and the lower inclined plate (9a) are respectively provided with focusing holes (9e). A spray gun is connected to the back of the upper inclined plate (9c) and the lower inclined plate (9a). The spray center line of each spray gun coincides with the axis of the corresponding focusing hole. The axis of each focusing hole and the center line of the center plate converge at the same focal point. A vertical wing plate (9b) is provided between the upper inclined plate (9c) and the lower inclined plate (9a) on each side of the center plate. An adjustment plate (3) with a waist-shaped groove is connected to the back of each wing plate (9b). An adjustment block (12) is connected to each of the two sides of the base. At least one screw connects the adjustment plate (3) to the adjustment block (12) through the waist-shaped hole on the adjustment plate (3). A focusing pointer (15) is connected to the center of the front of the center plate, and the focus of all the focusing holes converges at the tip of the focusing pointer (15).

2. The shot peening machine spray gun clamping device according to claim 1, characterized in that, Each upper or lower inclined plate has a nozzle fixing block (7) connected to the back of the corresponding focusing hole. One end of the nozzle fixing block is connected to a nozzle locking nut (6). A nozzle (5) is connected to the through hole of the nozzle fixing block (7) and the nozzle locking nut (6). The sandblasting sleeve (4) connected to the nozzle locking nut (6) locks the nozzle (5) in place. The spray center line of the nozzle (5) coincides with the center line of the corresponding focusing hole.

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