Tool for scribing and acceptance inspection of cylinder bottom of external liquid injection jack

Abstract

The utility model relates to a tool for scribing and acceptance inspection of a cylinder bottom of an external liquid injection jack, which comprises a top plate, a front plate, a rear plate, an avoiding table and a punching pin, and the top plate, the front plate and the rear plate enclose an inverted U-shaped structure; the avoiding table is arranged on the inner side wall of the front plate; a positioning hole is formed in the front plate, the punching pin is arranged in the positioning hole, the stress end of the punching pin is arranged on the outer side of the front plate, the punching end of the punching pin is arranged on the inner side of the front plate, and the stress end of the punching pin pushes the punching end inwards under external force to impact a workpiece to form a punching point. The tool is ingenious in design and convenient to use, is designed according to multiple comprehensive references such as the width of the flat part of the cylinder bottom of the external liquid injection jack, the height of the disc of the cylinder bottom and the diameter, can carry out product acceptance and drilling dotting operation on the cylinder bottom in the shortest time, reduces manual operation procedures of acceptance and scribing, improves the size accuracy, improves the production efficiency, and reduces the production cost. The product quality is guaranteed, the repair rate is reduced, and compared with the prior art, good market prospects and development space are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of scribing and acceptance tooling for forgings, and particularly relates to a tooling for scribing and acceptance of the bottom of an externally injected jack cylinder. Background Technique

[0002] The outer shape of the bottom of the externally injected jack cylinder is irregular. To improve the material utilization rate, reduce the processing procedures and costs, the bottom parts of the externally injected jack cylinder are forged and cut, and the mating surfaces are machined after returning to the factory. The forging blanks need to be measured for the limit dimensions to determine whether they can meet the usage requirements. During acceptance, 4 - 5 mating dimensions of a bottom forging of the cylinder need to be measured with a ruler. During processing, 3 - 4 lines need to be scribed on both sides of the flat part of the cylinder bottom to determine the drilling points. Moreover, when the first-line workers scribe lines, the drawing they get is the single-piece drawing of the product, not the assembly drawing. The mating surface cannot be seen from the single-piece drawing, and the mating reference and scribing reference cannot be determined. If scribing and acceptance are carried out from a non-reference surface, the actual usage requirements cannot be met, resulting in product rework. Therefore, the manual scribing and acceptance work generally takes a long time and has low accuracy.

[0003] How to design a tooling for scribing and acceptance of the bottom of an externally injected jack cylinder, which is ingenious in design, simple in structure, convenient to use, reduces the manual operation procedures of acceptance and scribing, improves the dimensional accuracy, improves the production efficiency, ensures the product quality, and reduces the rejection rate, is a problem that needs to be solved currently. Content of the Utility Model

[0004] In order to solve the technical problems such as the inability to determine the scribing reference for mating during the scribing and acceptance process of the bottom of the existing externally injected jack cylinder, the inability to meet the actual usage requirements, resulting in product rework, the scribing and acceptance work generally taking a long time, low accuracy, and low production efficiency, the utility model provides a tooling for scribing and acceptance of the bottom of an externally injected jack cylinder to achieve the purpose of ingenious design, simple structure, convenient use, reducing the manual operation procedures of acceptance and scribing, improving the dimensional accuracy, improving the production efficiency, ensuring the product quality, and reducing the rejection rate.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: A tooling for scribing and acceptance of the bottom of an externally injected jack cylinder, including a top plate, a front plate, a rear plate, an avoidance platform, and a punching pin. Among them, the front plate and the rear plate are vertically arranged opposite to each other, the left and right ends of the top plate are horizontally and fixedly arranged on the inner sides of the tops of the front plate and the rear plate, and the top plate, the front plate, and the rear plate enclose an inverted U-shaped structure; the avoidance platform is arranged on the inner side wall of the front plate; a positioning hole is arranged on the front plate, the punching pin is arranged in the positioning hole, the stress end of the punching pin is arranged on the outside of the front plate, the punching end of the punching pin is arranged on the inside of the front plate, and the stress end of the punching pin is pushed inward by an external force to impact the punching end on the workpiece to form a punching point.

[0006] As a further optimized solution for the tooling used for scribing and acceptance inspection of the bottom of the externally pressurized jack cylinder, the height of the front plate is lower than that of the rear plate.

[0007] As a further optimized solution for the tooling used for scribing and acceptance inspection of the bottom of the externally pressurized jack cylinder, the avoidance platform is parallel to the top plate, and the width of the avoidance platform is greater than the length that the punching end of the punching pin extends out from the initial position.

[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0009] The present utility model includes a top plate, a front plate, a rear plate, an avoidance platform and a punching pin. The present utility model is ingeniously designed and is designed based on comprehensive reference benchmarks such as the width of the flat part at the bottom of the externally pressurized jack cylinder, the height of the bottom disc of the cylinder, and the diameter. It can carry out product acceptance inspection and drilling and dotting operations on the bottom of the cylinder in the shortest time, is convenient to use, reduces the manual operation procedures for acceptance inspection and scribing, improves the dimensional accuracy, improves the production efficiency, and reduces the rejection rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is the front view structural schematic diagram of the present utility model;

[0011] Figure 2 is the side view structural schematic diagram of the present utility model;

[0012] Figure 3 is the top view structural schematic diagram of the present utility model;

[0013] Figure 4 is the three-dimensional structural schematic diagram of the present utility model;

[0014] Figure 5 is the front view structural schematic diagram of the cylinder bottom to be accepted;

[0015] Figure 6 is the three-dimensional structural schematic diagram of the cylinder bottom to be accepted;

[0016] Figure 7 is the three-dimensional schematic diagram of the present utility model in the use state;

[0017] Reference signs in the drawings: 1, top plate; 2, front plate; 3, rear plate; 4, avoidance platform; 5, punching pin; 6, flat part of the cylinder bottom; 7, bottom disc of the cylinder; 8, arc surface platform of the cylinder bottom. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further details the specific embodiments of the present utility model in conjunction with the drawings.

[0019] As shown in Figure 1 and 2As shown in Figures 3 and 4, the tooling for scribing and acceptance inspection of the bottom of the externally injected liquid jack cylinder includes a top plate 1, a front plate 2, a rear plate 3, an avoidance platform 4, and a punching pin 5. Among them, the front plate 2 and the rear plate 3 are arranged vertically opposite to each other, and the height of the front plate 2 is lower than that of the rear plate 3; the left and right ends of the top plate 1 are horizontally and fixedly arranged on the inner sides of the tops of the front plate 2 and the rear plate 3, and the top plate 1, the front plate 2, and the rear plate 3 enclose an inverted U-shaped structure; the avoidance platform 4 is arranged on the inner side wall of the front plate 2, the avoidance platform 4 is parallel to the top plate 1, and the width of the avoidance platform 4 is greater than the length of the punching end of the punching pin 5 extending from its initial position; there is a positioning hole on the front plate 2, and the outer diameter of the positioning hole is the same as the diameter of the punching pin 5, which is used to limit the penetration of the punching pin 5. The force-bearing end of the punching pin 5 is arranged on the outside of the front plate 2, and the punching end of the punching pin 5 is arranged on the inside of the front plate 2. The force-bearing end of the punching pin 5 is pushed inward by an external force to make the punching end impact on the workpiece to form a punching point.

[0020] As shown in Figure 5 , 6 Figures 5 and 6, it shows the bottom of the externally injected liquid jack cylinder to be inspected and scribed. The outer shape of the bottom of the externally injected liquid jack cylinder is irregular. For the existing conventional inspection of a bottom forging of a cylinder, it is necessary to use a ruler to measure 4 - 5 mating dimensions. When processing, 3 - 4 lines need to be scribed on both sides of the flat part of the cylinder bottom to determine the drilling points. Moreover, when the first-line workers scribe lines, the drawing they get is a single-piece drawing of the product, not an assembly drawing. From the single-piece drawing, the mating surface cannot be seen, and it is impossible to determine the mating reference and the scribing reference. If scribing and acceptance inspection are carried out from a non-reference surface, it cannot meet the actual use requirements, which will cause product rework and seriously affect production efficiency.

[0021] In actual operation, as shown in Figure 7 Figure 7, the width dimensions of the front plate 2 and the rear plate 3 are the same as the width dimension of the flat part 6 of the cylinder bottom, which is used to detect whether the width of the flat part 6 of the cylinder bottom is qualified; the heights of the front plate 2 and the rear plate 3 are different, and the formed dimensional step is used to detect whether the height dimension of the disc 7 of the cylinder bottom is qualified.

[0022] The working principle of the present utility model is as follows: The cylinder bottom is horizontally placed on a flat table; the tooling after assembly welding is sleeved on the cylinder bottom. The right side surface of the avoidance platform 4 is attached to the flat part 6 of the cylinder bottom, the bottom surface of the front plate 2 is attached to the top surface of the disc of the cylinder bottom, the left side surface of the rear plate 3 is tangentially attached to the disc of the cylinder bottom, and the bottom surface of the rear plate 3 coincides with the bottom surface of the disc of the cylinder bottom.

[0023] 1. By observing whether the widths of the front plate 2 and the rear plate 3 correspond to the width of the flat part 6 of the cylinder bottom, it is inspected whether the width of the flat part 6 of the cylinder bottom meets the technical requirements;

[0024] 2. By observing whether the height difference distance between the bottom surface of the front plate 2 and the bottom surface of the rear plate 3 corresponds to the height of the disc 7 of the cylinder bottom, it is detected whether the height of the disc 7 of the cylinder bottom meets the technical requirements;

[0025] 3. Detect whether the outer diameter dimensions of the flat part 6 and the round tire 7 at the bottom of the cylinder meet the technical requirements by checking whether the width distance between the right side surface of the avoidance platform 4 and the left side surface of the rear plate 3 corresponds to the outer diameter dimensions of the flat part 6 and the round tire 7 at the bottom of the cylinder;

[0026] If the above 3 conditions must meet the technical requirements simultaneously, then the bottom of the cylinder reaches the acceptance condition as a qualified part, and then the next step of scribing and drilling point operation is carried out.

[0027] 4. Fit the right side surface of the avoidance platform 4 with the left side surface of the flat part 6 at the bottom of the cylinder to prevent the front plate 2 from falling on the arc surface platform 8 at the bottom of the cylinder during assembly;

[0028] 5. Insert the punching pin 5 into the positioning hole of the front plate 2, and strike the force-bearing end surface at the left end of the punching pin 5 to form a drilling point on the left side surface of the flat part 6 at the bottom of the cylinder;

[0029] 6. Flip the tooling, repeat the operation in step 5, and punch on the other side surface of the flat part 6 at the bottom of the cylinder to form a drilling point;

[0030] Through steps 5 and 6, the scribing requirements for the bottom of the cylinder are met.

[0031] The utility model is ingeniously designed, simple in structure, and convenient to use, reducing the manual operation processes of acceptance and scribing, improving the dimensional accuracy, enhancing the production efficiency, ensuring the product quality, reducing the rejection rate, and solving the technical problems such as the inability to determine the mating reference scribing during the scribing and acceptance process of the bottom of the existing externally injected jack, which cannot meet the actual use requirements, resulting in product rework, and the scribing and acceptance work generally taking a long time, having low accuracy, and low production efficiency. For the existing technology, it has good market prospects and development space.

[0032] The above has described in detail the preferred specific embodiments and examples of the utility model in conjunction with the drawings, but the utility model is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the concept of the utility model.

Claims

1. The tooling used for marking and acceptance of the bottom of the external injection jack cylinder is characterized by: The invention comprises a top plate (1), a front plate (2), a rear plate (3), an avoidance platform (4) and a punching pin (5), wherein the front plate (2) and the rear plate (3) are arranged vertically opposite to each other, the left and right ends of the top plate (1) are horizontally fixedly arranged on the inner sides of the tops of the front plate (2) and the rear plate (3), and the top plate (1), the front plate (2) and the rear plate (3) form an inverted U-shaped structure; the avoidance platform (4) is arranged on the inner side wall of the front plate (2); a positioning hole is arranged on the front plate (2), the punching pin (5) is arranged in the positioning hole, the force-bearing end of the punching pin (5) is arranged on the outer side of the front plate (2), the punching end of the punching pin (5) is arranged on the inner side of the front plate (2), and the force-bearing end of the punching pin (5) is pushed inward by an external force so that the punching end hits the workpiece to form a punching point.

2. The tooling for marking and accepting the bottom of the external injection jack cylinder as claimed in claim 1, characterized in that: The height of the front plate (2) is lower than the height of the rear plate (3).

3. The tooling for marking and accepting the bottom of the external injection jack cylinder as claimed in claim 1, characterized in that: The avoidance platform (4) and the top plate (1) are parallel to each other, and the width of the avoidance platform (4) is greater than the length of the punching end of the punching pin (5) extending from the initial position.

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