Piston machining clamp

Abstract

The utility model discloses a piston machining clamp in the technical field of hydraulic cylinders, which comprises a base, a machining table is mounted at the top of the base, a cold air exhaust pipe and a hot air exhaust pipe penetrate through the top of the machining table, a steering rod is connected to the top of the machining table through a driving shaft, and supporting rods are welded to two ends of the steering rod respectively. A positioning groove is fixed to the top of the supporting rod and used for being connected with the piston piece in a matched and clamped mode, lower connecting plates are welded to the two sides of the positioning groove, penetrating holes are formed in the tops of the lower connecting plates, and the lower connecting plates are connected with a limiting cover through alloy memory connecting pieces and used for preventing one end of the piston piece from tilting during stamping. When one end of the piston piece is punched, the steering rod and the supporting rod are driven by the driving shaft to rotate in the horizontal direction, the supporting rod drives the positioning groove to rotate by degrees in the horizontal direction, punching machining of the other end of the piston piece is facilitated, manual clamping of the piston piece is not needed, and manual reversing is not needed. And the machining efficiency and machining convenience of the piston piece are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a piston processing fixture. Background Technique

[0002] A hydraulic cylinder is a hydraulic actuator that makes reciprocating motion. The hydraulic cylinder can convert hydraulic energy into mechanical energy. When using it to achieve reciprocating motion, a speed reduction device can be omitted, and there is no transmission gap, and the motion is stable. Therefore, it is widely used in the hydraulic systems of various machines. There are various classifications of hydraulic cylinders. Among them, the double-acting single-rod piston hydraulic cylinder mainly consists of components such as end covers, pistons, cylinder bodies, snap rings, support sleeves, circlips, dust rings, and Y-shaped sealing rings. When processing the components of the hydraulic cylinder, steps such as cutting, polishing, punching, and painting are required.

[0003] However, when punching the piston part, after punching one end of the piston part, it is necessary to manually flip the piston part in order to punch the other end. Since the temperature of the stamping part of the piston part is relatively high, it needs to be taken and flipped with a pair of tongs after stamping, which takes a long time, resulting in a long stamping construction period for the piston part. Based on this, the utility model designs a piston processing fixture to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a piston processing fixture to solve the problem of the long stamping construction period of the piston rod caused by manually flipping the piston rod as mentioned above.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A piston processing fixture includes a base. The base serves as a support component for the positioning structure. A processing table is installed on the top of the base, and the processing table is used to install and connect the positioning structure. A cold air exhaust pipe and a hot air exhaust pipe penetrate through the top of the processing table. The cold air exhaust pipe is used to reduce the temperature of the top surface of the processing table, and the hot air exhaust pipe is used to increase the temperature of the top surface of the processing table. The top of the processing table is connected to a steering rod through a drive shaft. The bottom of the drive shaft is connected to the output end of a drive motor, which is used to drive the steering rod to rotate horizontally, thereby adjusting the angle of the positioning groove. Support rods are respectively welded at both ends of the steering rod, and a positioning groove is fixed at the top of the support rod, which is used to fit and clamp the piston part to limit the piston part, facilitating the die punching of the piston part. During die punching, when the stamping of one end of the piston part is completed, the drive shaft drives the steering rod and the support rod to rotate horizontally, and the support rod drives the positioning groove to rotate 180° horizontally, facilitating the punching process of the other end of the piston part, without the need for manual clamping and manual commutation of the piston part, improving the processing efficiency and convenience of the piston part. Lower connecting plates are welded on both sides of the positioning groove. Through holes are opened at the top of the lower connecting plates. The lower connecting plates are connected to a limit cover through a shape memory alloy connector, which is used to prevent one end of the piston part from tilting during stamping. The shape memory alloy connector is a nickel-titanium alloy. When the temperature rises, the shape memory alloy connector unfolds into a straight strip. When the temperature of the shape memory alloy connector rises, it curls into a hook shape to fix the limit cover.

[0007] As a further solution of the present invention, at least two pairs of the cold air exhaust pipes are arranged opposite to the through holes, and the hot air exhaust pipes are distributed between the two pairs of cold air exhaust pipes. The number of the hot air exhaust pipes is not greater than that of the cold air exhaust pipes. Since the temperature of the surface of the piston part rises during die punching, arranging the cold air exhaust pipes opposite to the through holes is beneficial to accelerating the cooling of the shape memory alloy connector, so that the lower end of the shape memory alloy connector curls into a hook shape to tightly fasten the connecting plate.

[0008] As a further solution of the present invention, the lower connecting plates are symmetrically distributed about the central axis of the positioning groove. Openings are provided at both ends inside the positioning groove, and the openings are used to collect waste fragments generated during stamping.

[0009] As a further solution of the present invention, pick-up ports are respectively provided in the middle parts of both sides of the positioning groove. The pick-up ports are U-shaped grooves, and the height of the pick-up ports is not greater than half of the height of the positioning groove. The pick-up ports facilitate the operator to pick up and place the piston part using a clamping tool.

[0010] As a further solution of the present invention, the bottom surface of the steering rod is in close contact with the top surface of the processing table. A cross key is provided at the connection part between the drive shaft and the steering rod. The steering rod is in close contact with the top surface of the processing table, and the pressure received can be transmitted to the processing table.

[0011] As a further solution of the present utility model, the limit cover includes a limit plate and upper connecting plates welded on both sides of the limit plate. Openings are provided on both sides of the bottom of the limit cover for easy taking of the limit cover. The limit cover covers the surface of the piston part to limit the piston part and prevent the piston part from shaking during stamping.

[0012] As a further solution of the present utility model, the lower end of the alloy memory connecting piece is straight. When the temperature of the alloy memory connecting piece rises, the alloy memory connecting piece becomes straight, facilitating the separation of the connection between the limit cover and the positioning groove.

[0013] As a further solution of the present utility model, the lower end of the alloy memory connecting piece is hook-shaped and is used to connect the limit cover and the positioning groove, so that the limit cover limits the surface of the piston part.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, when stamping one end of the piston part is completed, the driving shaft drives the steering rod and the support rod to rotate in the horizontal direction, and the support rod drives the positioning groove to rotate by ° in the horizontal direction, facilitating the punching process of the other end of the piston part, without the need for manual clamping of the piston part for manual commutation, improving the processing efficiency and convenience of the piston part.

[0016] 2. In the present utility model, when the temperature rises, the alloy memory connecting piece unfolds into a straight shape. After the temperature of the alloy memory connecting piece rises, the alloy memory connecting piece curls into a hook shape for fixing the limit cover, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a structural schematic diagram of the positioning groove of the present utility model;

[0019] Figure 3 is a structural schematic diagram of the limit cover in Embodiment 2 of the present utility model;

[0020] Figure 4 is a structural schematic diagram of the limit cover in Embodiment 1 of the present utility model;

[0021] Figure 5 is a front view of the connection structure of the positioning groove of the present utility model.

[0022] In the figure: 1. Base; 2. Processing table; 3. Cold air exhaust pipe; 4. Hot air exhaust pipe; 5. Driving shaft; 6. Steering rod; 7. Support rod; 8. Positioning groove; 9. Lower connecting plate; 10. Piston part; 11. Limit cover; 12. Object taking port; 13. Upper connecting plate; 14. Alloy memory connecting piece; 15. Opening; 16. Perforation. Detailed implementation mode

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1;

[0025] Please refer to Figures 1 - 5, in the embodiment of the present utility model, a piston processing fixture includes a base 1. The base 1 serves as a supporting component of the positioning structure. A processing table 2 is installed on the top of the base 1. The processing table 2 is used to install and connect the positioning structure. A cold air exhaust pipe 3 and a hot air exhaust pipe 4 penetrate through the top of the processing table 2. The cold air exhaust pipe 3 is used to lower the temperature of the top surface of the processing table 2, and the hot air exhaust pipe 4 is used to raise the temperature of the top surface of the processing table 2. At least two pairs of cold air exhaust pipes 3 are arranged facing the perforation 16. The hot air exhaust pipes 4 are distributed between the two pairs of cold air exhaust pipes 3, and the number of hot air exhaust pipes 4 is not greater than that of the cold air exhaust pipes 3. Since the temperature of the surface of the piston part 10 rises during die stamping, therefore, arranging the cold air exhaust pipe 3 facing the perforation 16 is beneficial to accelerating the cooling of the alloy memory connecting piece 14, so that the lower end of the alloy memory connecting piece 14 will curl into a hook shape to tightly fasten the connecting plate. The top of the processing table 2 is connected to a steering rod 6 through a driving shaft 5. The bottom of the driving shaft 5 is connected to the output end of a driving motor, which is used to drive the steering rod 6 to rotate in the horizontal direction, thereby adjusting the angle of the positioning groove 8. Support rods 7 are respectively welded at both ends of the steering rod 6. A positioning groove 8 is fixed at the top of the support rod 7, which is used to adapt to and clamp the piston part 10 to limit the piston part 10, facilitating the die stamping of the piston part 10. During die stamping, when the stamping of one end of the piston part 10 is completed, the driving shaft 5 drives the steering rod 6 and the support rod 7 to rotate in the horizontal direction, and the support rod 7 drives the positioning groove 8 to rotate 180° in the horizontal direction, facilitating the punching process of the other end of the piston part 10, without the need for manual clamping and manual commutation of the piston part 10, improving the processing efficiency and processing convenience of the piston part 10. Lower connecting plates 9 are welded on both sides of the positioning groove 8. A perforation 16 is opened at the top of the lower connecting plate 9. The lower connecting plate 9 is connected to a limiting cover 11 through an alloy memory connecting piece 14, which is used to prevent one end of the piston part 10 from tilting during stamping. The limiting cover 11 includes a limiting plate and upper connecting plates 13 welded on both sides of the limiting plate. Openings 15 are opened at both sides of the bottom of the limiting cover 11, facilitating the taking of the limiting cover 11. The limiting cover 11 covers the surface of the piston part 10 to limit the piston part 10 and prevent the piston part 10 from shaking during stamping. The alloy memory connecting piece 14 is a nickel-titanium alloy. When the temperature rises, the alloy memory connecting piece 14 unfolds into a straight strip shape. When the temperature of the alloy memory connecting piece 14 rises, the alloy memory connecting piece 14 curls into a hook shape to fix the limiting cover 11.

[0026] Preferably, as Figure 1 and Figure 2 shown, the lower connecting plates 9 are symmetrically distributed about the central axis of the positioning groove 8. Openings 15 are opened at both ends inside the positioning groove 8, and the openings 15 are used to collect waste fragments generated during stamping.

[0027] Preferably, as Figure 1As shown, access openings 12 are respectively provided in the middle parts on both sides of the positioning groove 8. The access openings 12 are U-shaped grooves, and the height of the access openings 12 is not greater than half of the height of the positioning groove 8. The access openings 12 facilitate the operator to use clamping tools to pick up and place the piston part 10.

[0028] Preferably, as Figure 5 shown, the bottom surface of the steering rod 6 is in close contact with the top surface of the processing table 2. A cross key is provided at the connecting part of the drive shaft 5 and the steering rod 6. The steering rod 6 is in close contact with the top surface of the processing table 2, and the pressure received can be transmitted to the processing table 2.

[0029] Preferably, as Figure 4 shown, the lower end of the alloy memory connecting piece 14 is in a hook shape, which is used to connect the limit cover 11 and the positioning groove 8, so that the limit cover 11 limits the surface of the piston part 10.

[0030] Embodiment 2;

[0031] The difference between this embodiment and the previous embodiment is that: as Figure 3 shown, the lower end of the alloy memory connecting piece 14 is in a straight strip shape. At this time, the alloy memory connecting piece 14 is in a state where the environmental temperature rises. When the alloy memory connecting piece 14 is in a straightened state, it is convenient to separate the connection between the limit cover 11 and the positioning groove 8, the limit cover 11 can be removed, and at the same time, it is convenient to remove the piston part 10 from the inside of the positioning groove 8.

[0032] The working principle of the present utility model is: during use, the drive shaft 5 can drive the steering rod 6 and the support rod 7 to rotate in the horizontal direction, and the support rod 7 drives the positioning groove 8 to rotate 180° in the horizontal direction, which is convenient for punching the other end of the piston part 10, without manual clamping of the piston part 10 for manual commutation.

[0033] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A piston processing fixture, comprising a base (1), and a processing table (2) is installed on the top of the base (1), characterized in that: The top of the processing table (2) is penetrated by a cold air discharge pipe (3) and a hot air discharge pipe (4). The top of the processing table (2) is connected to a steering rod (6) through a drive shaft (5). Support rods (7) are welded to both ends of the steering rod (6). A positioning groove (8) is fixed to the top of the support rod (7) for fitting and clamping a piston part (10). Lower connecting plates (9) are welded to both sides of the positioning groove (8). A through hole (16) is formed in the top of the lower connecting plate (9). The lower connecting plate (9) is connected to a limiting cover (11) through a shape memory alloy connecting piece (14).

2. The piston processing fixture according to claim 1, wherein: At least two pairs of the cold air discharge pipes (3) are provided facing the through hole (16). The hot air discharge pipes (4) are distributed between the two pairs of cold air discharge pipes (3), and the number of the hot air discharge pipes (4) is not greater than that of the cold air discharge pipes (3).

3. A piston machining fixture according to claim 1, characterized in that: The lower connecting plates (9) are symmetrically distributed about the central axis of the positioning groove (8). Openings (15) are formed at both ends inside the positioning groove (8).

4. A piston processing fixture according to claim 1, characterized in that: Object taking openings (12) are respectively formed in the middle parts of both sides of the positioning groove (8). The object taking openings (12) are U-shaped grooves, and the height of the object taking openings (12) is not greater than half of the height of the positioning groove (8).

5. A piston processing fixture according to claim 1, characterized in that: The bottom surface of the steering rod (6) is in close contact with the top surface of the processing table (2). A cross key is arranged at the connecting part of the drive shaft (5) and the steering rod (6).

6. The piston processing fixture according to claim 1, characterized in that: The limiting cover (11) includes a limiting plate and upper connecting plates (13) welded to both sides of the limiting plate. Openings (15) are formed at both sides of the bottom of the limiting cover (11).

7. A piston processing fixture according to claim 1, characterized in that: The lower end of the shape memory alloy connecting piece (14) is straight bar-shaped.

8. A piston processing fixture according to claim 1, characterized in that: The lower end of the shape memory alloy connecting piece (14) is hook-shaped.

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